git.sesse.net Git - ffmpeg/blob - fftools/ffplay.c

   1 /*
   2  * Copyright (c) 2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * simple media player based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <inttypes.h>
  28 #include <math.h>
  29 #include <limits.h>
  30 #include <signal.h>
  31 #include <stdint.h>
  32
  33 #include "libavutil/avstring.h"
  34 #include "libavutil/eval.h"
  35 #include "libavutil/mathematics.h"
  36 #include "libavutil/pixdesc.h"
  37 #include "libavutil/imgutils.h"
  38 #include "libavutil/dict.h"
  39 #include "libavutil/fifo.h"
  40 #include "libavutil/parseutils.h"
  41 #include "libavutil/samplefmt.h"
  42 #include "libavutil/avassert.h"
  43 #include "libavutil/time.h"
  44 #include "libavutil/bprint.h"
  45 #include "libavformat/avformat.h"
  46 #include "libavdevice/avdevice.h"
  47 #include "libswscale/swscale.h"
  48 #include "libavutil/opt.h"
  49 #include "libavcodec/avfft.h"
  50 #include "libswresample/swresample.h"
  51
  52 #if CONFIG_AVFILTER
  53 # include "libavfilter/avfilter.h"
  54 # include "libavfilter/buffersink.h"
  55 # include "libavfilter/buffersrc.h"
  56 #endif
  57
  58 #include <SDL.h>
  59 #include <SDL_thread.h>
  60
  61 #include "cmdutils.h"
  62
  63 #include <assert.h>
  64
  65 const char program_name[] = "ffplay";
  66 const int program_birth_year = 2003;
  67
  68 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
  69 #define MIN_FRAMES 25
  70 #define EXTERNAL_CLOCK_MIN_FRAMES 2
  71 #define EXTERNAL_CLOCK_MAX_FRAMES 10
  72
  73 /* Minimum SDL audio buffer size, in samples. */
  74 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
  75 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
  76 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
  77
  78 /* Step size for volume control in dB */
  79 #define SDL_VOLUME_STEP (0.75)
  80
  81 /* no AV sync correction is done if below the minimum AV sync threshold */
  82 #define AV_SYNC_THRESHOLD_MIN 0.04
  83 /* AV sync correction is done if above the maximum AV sync threshold */
  84 #define AV_SYNC_THRESHOLD_MAX 0.1
  85 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
  86 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
  87 /* no AV correction is done if too big error */
  88 #define AV_NOSYNC_THRESHOLD 10.0
  89
  90 /* maximum audio speed change to get correct sync */
  91 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  92
  93 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
  94 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
  95 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
  96 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
  97
  98 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  99 #define AUDIO_DIFF_AVG_NB   20
 100
 101 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
 102 #define REFRESH_RATE 0.01
 103
 104 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
 105 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
 106 #define SAMPLE_ARRAY_SIZE (8 * 65536)
 107
 108 #define CURSOR_HIDE_DELAY 1000000
 109
 110 #define USE_ONEPASS_SUBTITLE_RENDER 1
 111
 112 static unsigned sws_flags = SWS_BICUBIC;
 113
 114 typedef struct MyAVPacketList {
 115     AVPacket *pkt;
 116     int serial;
 117 } MyAVPacketList;
 118
 119 typedef struct PacketQueue {
 120     AVFifoBuffer *pkt_list;
 121     int nb_packets;
 122     int size;
 123     int64_t duration;
 124     int abort_request;
 125     int serial;
 126     SDL_mutex *mutex;
 127     SDL_cond *cond;
 128 } PacketQueue;
 129
 130 #define VIDEO_PICTURE_QUEUE_SIZE 3
 131 #define SUBPICTURE_QUEUE_SIZE 16
 132 #define SAMPLE_QUEUE_SIZE 9
 133 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
 134
 135 typedef struct AudioParams {
 136     int freq;
 137     int channels;
 138     int64_t channel_layout;
 139     enum AVSampleFormat fmt;
 140     int frame_size;
 141     int bytes_per_sec;
 142 } AudioParams;
 143
 144 typedef struct Clock {
 145     double pts;           /* clock base */
 146     double pts_drift;     /* clock base minus time at which we updated the clock */
 147     double last_updated;
 148     double speed;
 149     int serial;           /* clock is based on a packet with this serial */
 150     int paused;
 151     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
 152 } Clock;
 153
 154 /* Common struct for handling all types of decoded data and allocated render buffers. */
 155 typedef struct Frame {
 156     AVFrame *frame;
 157     AVSubtitle sub;
 158     int serial;
 159     double pts;           /* presentation timestamp for the frame */
 160     double duration;      /* estimated duration of the frame */
 161     int64_t pos;          /* byte position of the frame in the input file */
 162     int width;
 163     int height;
 164     int format;
 165     AVRational sar;
 166     int uploaded;
 167     int flip_v;
 168 } Frame;
 169
 170 typedef struct FrameQueue {
 171     Frame queue[FRAME_QUEUE_SIZE];
 172     int rindex;
 173     int windex;
 174     int size;
 175     int max_size;
 176     int keep_last;
 177     int rindex_shown;
 178     SDL_mutex *mutex;
 179     SDL_cond *cond;
 180     PacketQueue *pktq;
 181 } FrameQueue;
 182
 183 enum {
 184     AV_SYNC_AUDIO_MASTER, /* default choice */
 185     AV_SYNC_VIDEO_MASTER,
 186     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 187 };
 188
 189 typedef struct Decoder {
 190     AVPacket *pkt;
 191     PacketQueue *queue;
 192     AVCodecContext *avctx;
 193     int pkt_serial;
 194     int finished;
 195     int packet_pending;
 196     SDL_cond *empty_queue_cond;
 197     int64_t start_pts;
 198     AVRational start_pts_tb;
 199     int64_t next_pts;
 200     AVRational next_pts_tb;
 201     SDL_Thread *decoder_tid;
 202 } Decoder;
 203
 204 typedef struct VideoState {
 205     SDL_Thread *read_tid;
 206     const AVInputFormat *iformat;
 207     int abort_request;
 208     int force_refresh;
 209     int paused;
 210     int last_paused;
 211     int queue_attachments_req;
 212     int seek_req;
 213     int seek_flags;
 214     int64_t seek_pos;
 215     int64_t seek_rel;
 216     int read_pause_return;
 217     AVFormatContext *ic;
 218     int realtime;
 219
 220     Clock audclk;
 221     Clock vidclk;
 222     Clock extclk;
 223
 224     FrameQueue pictq;
 225     FrameQueue subpq;
 226     FrameQueue sampq;
 227
 228     Decoder auddec;
 229     Decoder viddec;
 230     Decoder subdec;
 231
 232     int audio_stream;
 233
 234     int av_sync_type;
 235
 236     double audio_clock;
 237     int audio_clock_serial;
 238     double audio_diff_cum; /* used for AV difference average computation */
 239     double audio_diff_avg_coef;
 240     double audio_diff_threshold;
 241     int audio_diff_avg_count;
 242     AVStream *audio_st;
 243     PacketQueue audioq;
 244     int audio_hw_buf_size;
 245     uint8_t *audio_buf;
 246     uint8_t *audio_buf1;
 247     unsigned int audio_buf_size; /* in bytes */
 248     unsigned int audio_buf1_size;
 249     int audio_buf_index; /* in bytes */
 250     int audio_write_buf_size;
 251     int audio_volume;
 252     int muted;
 253     struct AudioParams audio_src;
 254 #if CONFIG_AVFILTER
 255     struct AudioParams audio_filter_src;
 256 #endif
 257     struct AudioParams audio_tgt;
 258     struct SwrContext *swr_ctx;
 259     int frame_drops_early;
 260     int frame_drops_late;
 261
 262     enum ShowMode {
 263         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 264     } show_mode;
 265     int16_t sample_array[SAMPLE_ARRAY_SIZE];
 266     int sample_array_index;
 267     int last_i_start;
 268     RDFTContext *rdft;
 269     int rdft_bits;
 270     FFTSample *rdft_data;
 271     int xpos;
 272     double last_vis_time;
 273     SDL_Texture *vis_texture;
 274     SDL_Texture *sub_texture;
 275     SDL_Texture *vid_texture;
 276
 277     int subtitle_stream;
 278     AVStream *subtitle_st;
 279     PacketQueue subtitleq;
 280
 281     double frame_timer;
 282     double frame_last_returned_time;
 283     double frame_last_filter_delay;
 284     int video_stream;
 285     AVStream *video_st;
 286     PacketQueue videoq;
 287     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
 288     struct SwsContext *img_convert_ctx;
 289     struct SwsContext *sub_convert_ctx;
 290     int eof;
 291
 292     char *filename;
 293     int width, height, xleft, ytop;
 294     int step;
 295
 296 #if CONFIG_AVFILTER
 297     int vfilter_idx;
 298     AVFilterContext *in_video_filter;   // the first filter in the video chain
 299     AVFilterContext *out_video_filter;  // the last filter in the video chain
 300     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
 301     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
 302     AVFilterGraph *agraph;              // audio filter graph
 303 #endif
 304
 305     int last_video_stream, last_audio_stream, last_subtitle_stream;
 306
 307     SDL_cond *continue_read_thread;
 308 } VideoState;
 309
 310 /* options specified by the user */
 311 static const AVInputFormat *file_iformat;
 312 static const char *input_filename;
 313 static const char *window_title;
 314 static int default_width  = 640;
 315 static int default_height = 480;
 316 static int screen_width  = 0;
 317 static int screen_height = 0;
 318 static int screen_left = SDL_WINDOWPOS_CENTERED;
 319 static int screen_top = SDL_WINDOWPOS_CENTERED;
 320 static int audio_disable;
 321 static int video_disable;
 322 static int subtitle_disable;
 323 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
 324 static int seek_by_bytes = -1;
 325 static float seek_interval = 10;
 326 static int display_disable;
 327 static int borderless;
 328 static int alwaysontop;
 329 static int startup_volume = 100;
 330 static int show_status = -1;
 331 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 332 static int64_t start_time = AV_NOPTS_VALUE;
 333 static int64_t duration = AV_NOPTS_VALUE;
 334 static int fast = 0;
 335 static int genpts = 0;
 336 static int lowres = 0;
 337 static int decoder_reorder_pts = -1;
 338 static int autoexit;
 339 static int exit_on_keydown;
 340 static int exit_on_mousedown;
 341 static int loop = 1;
 342 static int framedrop = -1;
 343 static int infinite_buffer = -1;
 344 static enum ShowMode show_mode = SHOW_MODE_NONE;
 345 static const char *audio_codec_name;
 346 static const char *subtitle_codec_name;
 347 static const char *video_codec_name;
 348 double rdftspeed = 0.02;
 349 static int64_t cursor_last_shown;
 350 static int cursor_hidden = 0;
 351 #if CONFIG_AVFILTER
 352 static const char **vfilters_list = NULL;
 353 static int nb_vfilters = 0;
 354 static char *afilters = NULL;
 355 #endif
 356 static int autorotate = 1;
 357 static int find_stream_info = 1;
 358 static int filter_nbthreads = 0;
 359
 360 /* current context */
 361 static int is_full_screen;
 362 static int64_t audio_callback_time;
 363
 364 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 365
 366 static SDL_Window *window;
 367 static SDL_Renderer *renderer;
 368 static SDL_RendererInfo renderer_info = {0};
 369 static SDL_AudioDeviceID audio_dev;
 370
 371 static const struct TextureFormatEntry {
 372     enum AVPixelFormat format;
 373     int texture_fmt;
 374 } sdl_texture_format_map[] = {
 375     { AV_PIX_FMT_RGB8,           SDL_PIXELFORMAT_RGB332 },
 376     { AV_PIX_FMT_RGB444,         SDL_PIXELFORMAT_RGB444 },
 377     { AV_PIX_FMT_RGB555,         SDL_PIXELFORMAT_RGB555 },
 378     { AV_PIX_FMT_BGR555,         SDL_PIXELFORMAT_BGR555 },
 379     { AV_PIX_FMT_RGB565,         SDL_PIXELFORMAT_RGB565 },
 380     { AV_PIX_FMT_BGR565,         SDL_PIXELFORMAT_BGR565 },
 381     { AV_PIX_FMT_RGB24,          SDL_PIXELFORMAT_RGB24 },
 382     { AV_PIX_FMT_BGR24,          SDL_PIXELFORMAT_BGR24 },
 383     { AV_PIX_FMT_0RGB32,         SDL_PIXELFORMAT_RGB888 },
 384     { AV_PIX_FMT_0BGR32,         SDL_PIXELFORMAT_BGR888 },
 385     { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
 386     { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
 387     { AV_PIX_FMT_RGB32,          SDL_PIXELFORMAT_ARGB8888 },
 388     { AV_PIX_FMT_RGB32_1,        SDL_PIXELFORMAT_RGBA8888 },
 389     { AV_PIX_FMT_BGR32,          SDL_PIXELFORMAT_ABGR8888 },
 390     { AV_PIX_FMT_BGR32_1,        SDL_PIXELFORMAT_BGRA8888 },
 391     { AV_PIX_FMT_YUV420P,        SDL_PIXELFORMAT_IYUV },
 392     { AV_PIX_FMT_YUYV422,        SDL_PIXELFORMAT_YUY2 },
 393     { AV_PIX_FMT_UYVY422,        SDL_PIXELFORMAT_UYVY },
 394     { AV_PIX_FMT_NONE,           SDL_PIXELFORMAT_UNKNOWN },
 395 };
 396
 397 #if CONFIG_AVFILTER
 398 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
 399 {
 400     GROW_ARRAY(vfilters_list, nb_vfilters);
 401     vfilters_list[nb_vfilters - 1] = arg;
 402     return 0;
 403 }
 404 #endif
 405
 406 static inline
 407 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
 408                    enum AVSampleFormat fmt2, int64_t channel_count2)
 409 {
 410     /* If channel count == 1, planar and non-planar formats are the same */
 411     if (channel_count1 == 1 && channel_count2 == 1)
 412         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
 413     else
 414         return channel_count1 != channel_count2 || fmt1 != fmt2;
 415 }
 416
 417 static inline
 418 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
 419 {
 420     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
 421         return channel_layout;
 422     else
 423         return 0;
 424 }
 425
 426 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
 427 {
 428     MyAVPacketList pkt1;
 429
 430     if (q->abort_request)
 431        return -1;
 432
 433     if (av_fifo_space(q->pkt_list) < sizeof(pkt1)) {
 434         if (av_fifo_grow(q->pkt_list, sizeof(pkt1)) < 0)
 435             return -1;
 436     }
 437
 438     pkt1.pkt = pkt;
 439     pkt1.serial = q->serial;
 440
 441     av_fifo_generic_write(q->pkt_list, &pkt1, sizeof(pkt1), NULL);
 442     q->nb_packets++;
 443     q->size += pkt1.pkt->size + sizeof(pkt1);
 444     q->duration += pkt1.pkt->duration;
 445     /* XXX: should duplicate packet data in DV case */
 446     SDL_CondSignal(q->cond);
 447     return 0;
 448 }
 449
 450 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 451 {
 452     AVPacket *pkt1;
 453     int ret;
 454
 455     pkt1 = av_packet_alloc();
 456     if (!pkt1) {
 457         av_packet_unref(pkt);
 458         return -1;
 459     }
 460     av_packet_move_ref(pkt1, pkt);
 461
 462     SDL_LockMutex(q->mutex);
 463     ret = packet_queue_put_private(q, pkt1);
 464     SDL_UnlockMutex(q->mutex);
 465
 466     if (ret < 0)
 467         av_packet_free(&pkt1);
 468
 469     return ret;
 470 }
 471
 472 static int packet_queue_put_nullpacket(PacketQueue *q, AVPacket *pkt, int stream_index)
 473 {
 474     pkt->stream_index = stream_index;
 475     return packet_queue_put(q, pkt);
 476 }
 477
 478 /* packet queue handling */
 479 static int packet_queue_init(PacketQueue *q)
 480 {
 481     memset(q, 0, sizeof(PacketQueue));
 482     q->pkt_list = av_fifo_alloc(sizeof(MyAVPacketList));
 483     if (!q->pkt_list)
 484         return AVERROR(ENOMEM);
 485     q->mutex = SDL_CreateMutex();
 486     if (!q->mutex) {
 487         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
 488         return AVERROR(ENOMEM);
 489     }
 490     q->cond = SDL_CreateCond();
 491     if (!q->cond) {
 492         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
 493         return AVERROR(ENOMEM);
 494     }
 495     q->abort_request = 1;
 496     return 0;
 497 }
 498
 499 static void packet_queue_flush(PacketQueue *q)
 500 {
 501     MyAVPacketList pkt1;
 502
 503     SDL_LockMutex(q->mutex);
 504     while (av_fifo_size(q->pkt_list) >= sizeof(pkt1)) {
 505         av_fifo_generic_read(q->pkt_list, &pkt1, sizeof(pkt1), NULL);
 506         av_packet_free(&pkt1.pkt);
 507     }
 508     q->nb_packets = 0;
 509     q->size = 0;
 510     q->duration = 0;
 511     q->serial++;
 512     SDL_UnlockMutex(q->mutex);
 513 }
 514
 515 static void packet_queue_destroy(PacketQueue *q)
 516 {
 517     packet_queue_flush(q);
 518     av_fifo_freep(&q->pkt_list);
 519     SDL_DestroyMutex(q->mutex);
 520     SDL_DestroyCond(q->cond);
 521 }
 522
 523 static void packet_queue_abort(PacketQueue *q)
 524 {
 525     SDL_LockMutex(q->mutex);
 526
 527     q->abort_request = 1;
 528
 529     SDL_CondSignal(q->cond);
 530
 531     SDL_UnlockMutex(q->mutex);
 532 }
 533
 534 static void packet_queue_start(PacketQueue *q)
 535 {
 536     SDL_LockMutex(q->mutex);
 537     q->abort_request = 0;
 538     q->serial++;
 539     SDL_UnlockMutex(q->mutex);
 540 }
 541
 542 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 543 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
 544 {
 545     MyAVPacketList pkt1;
 546     int ret;
 547
 548     SDL_LockMutex(q->mutex);
 549
 550     for (;;) {
 551         if (q->abort_request) {
 552             ret = -1;
 553             break;
 554         }
 555
 556         if (av_fifo_size(q->pkt_list) >= sizeof(pkt1)) {
 557             av_fifo_generic_read(q->pkt_list, &pkt1, sizeof(pkt1), NULL);
 558             q->nb_packets--;
 559             q->size -= pkt1.pkt->size + sizeof(pkt1);
 560             q->duration -= pkt1.pkt->duration;
 561             av_packet_move_ref(pkt, pkt1.pkt);
 562             if (serial)
 563                 *serial = pkt1.serial;
 564             av_packet_free(&pkt1.pkt);
 565             ret = 1;
 566             break;
 567         } else if (!block) {
 568             ret = 0;
 569             break;
 570         } else {
 571             SDL_CondWait(q->cond, q->mutex);
 572         }
 573     }
 574     SDL_UnlockMutex(q->mutex);
 575     return ret;
 576 }
 577
 578 static int decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
 579     memset(d, 0, sizeof(Decoder));
 580     d->pkt = av_packet_alloc();
 581     if (!d->pkt)
 582         return AVERROR(ENOMEM);
 583     d->avctx = avctx;
 584     d->queue = queue;
 585     d->empty_queue_cond = empty_queue_cond;
 586     d->start_pts = AV_NOPTS_VALUE;
 587     d->pkt_serial = -1;
 588     return 0;
 589 }
 590
 591 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
 592     int ret = AVERROR(EAGAIN);
 593
 594     for (;;) {
 595         if (d->queue->serial == d->pkt_serial) {
 596             do {
 597                 if (d->queue->abort_request)
 598                     return -1;
 599
 600                 switch (d->avctx->codec_type) {
 601                     case AVMEDIA_TYPE_VIDEO:
 602                         ret = avcodec_receive_frame(d->avctx, frame);
 603                         if (ret >= 0) {
 604                             if (decoder_reorder_pts == -1) {
 605                                 frame->pts = frame->best_effort_timestamp;
 606                             } else if (!decoder_reorder_pts) {
 607                                 frame->pts = frame->pkt_dts;
 608                             }
 609                         }
 610                         break;
 611                     case AVMEDIA_TYPE_AUDIO:
 612                         ret = avcodec_receive_frame(d->avctx, frame);
 613                         if (ret >= 0) {
 614                             AVRational tb = (AVRational){1, frame->sample_rate};
 615                             if (frame->pts != AV_NOPTS_VALUE)
 616                                 frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
 617                             else if (d->next_pts != AV_NOPTS_VALUE)
 618                                 frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
 619                             if (frame->pts != AV_NOPTS_VALUE) {
 620                                 d->next_pts = frame->pts + frame->nb_samples;
 621                                 d->next_pts_tb = tb;
 622                             }
 623                         }
 624                         break;
 625                 }
 626                 if (ret == AVERROR_EOF) {
 627                     d->finished = d->pkt_serial;
 628                     avcodec_flush_buffers(d->avctx);
 629                     return 0;
 630                 }
 631                 if (ret >= 0)
 632                     return 1;
 633             } while (ret != AVERROR(EAGAIN));
 634         }
 635
 636         do {
 637             if (d->queue->nb_packets == 0)
 638                 SDL_CondSignal(d->empty_queue_cond);
 639             if (d->packet_pending) {
 640                 d->packet_pending = 0;
 641             } else {
 642                 int old_serial = d->pkt_serial;
 643                 if (packet_queue_get(d->queue, d->pkt, 1, &d->pkt_serial) < 0)
 644                     return -1;
 645                 if (old_serial != d->pkt_serial) {
 646                     avcodec_flush_buffers(d->avctx);
 647                     d->finished = 0;
 648                     d->next_pts = d->start_pts;
 649                     d->next_pts_tb = d->start_pts_tb;
 650                 }
 651             }
 652             if (d->queue->serial == d->pkt_serial)
 653                 break;
 654             av_packet_unref(d->pkt);
 655         } while (1);
 656
 657         if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
 658             int got_frame = 0;
 659             ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, d->pkt);
 660             if (ret < 0) {
 661                 ret = AVERROR(EAGAIN);
 662             } else {
 663                 if (got_frame && !d->pkt->data) {
 664                     d->packet_pending = 1;
 665                 }
 666                 ret = got_frame ? 0 : (d->pkt->data ? AVERROR(EAGAIN) : AVERROR_EOF);
 667             }
 668             av_packet_unref(d->pkt);
 669         } else {
 670             if (avcodec_send_packet(d->avctx, d->pkt) == AVERROR(EAGAIN)) {
 671                 av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
 672                 d->packet_pending = 1;
 673             } else {
 674                 av_packet_unref(d->pkt);
 675             }
 676         }
 677     }
 678 }
 679
 680 static void decoder_destroy(Decoder *d) {
 681     av_packet_free(&d->pkt);
 682     avcodec_free_context(&d->avctx);
 683 }
 684
 685 static void frame_queue_unref_item(Frame *vp)
 686 {
 687     av_frame_unref(vp->frame);
 688     avsubtitle_free(&vp->sub);
 689 }
 690
 691 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
 692 {
 693     int i;
 694     memset(f, 0, sizeof(FrameQueue));
 695     if (!(f->mutex = SDL_CreateMutex())) {
 696         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
 697         return AVERROR(ENOMEM);
 698     }
 699     if (!(f->cond = SDL_CreateCond())) {
 700         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
 701         return AVERROR(ENOMEM);
 702     }
 703     f->pktq = pktq;
 704     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
 705     f->keep_last = !!keep_last;
 706     for (i = 0; i < f->max_size; i++)
 707         if (!(f->queue[i].frame = av_frame_alloc()))
 708             return AVERROR(ENOMEM);
 709     return 0;
 710 }
 711
 712 static void frame_queue_destory(FrameQueue *f)
 713 {
 714     int i;
 715     for (i = 0; i < f->max_size; i++) {
 716         Frame *vp = &f->queue[i];
 717         frame_queue_unref_item(vp);
 718         av_frame_free(&vp->frame);
 719     }
 720     SDL_DestroyMutex(f->mutex);
 721     SDL_DestroyCond(f->cond);
 722 }
 723
 724 static void frame_queue_signal(FrameQueue *f)
 725 {
 726     SDL_LockMutex(f->mutex);
 727     SDL_CondSignal(f->cond);
 728     SDL_UnlockMutex(f->mutex);
 729 }
 730
 731 static Frame *frame_queue_peek(FrameQueue *f)
 732 {
 733     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
 734 }
 735
 736 static Frame *frame_queue_peek_next(FrameQueue *f)
 737 {
 738     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
 739 }
 740
 741 static Frame *frame_queue_peek_last(FrameQueue *f)
 742 {
 743     return &f->queue[f->rindex];
 744 }
 745
 746 static Frame *frame_queue_peek_writable(FrameQueue *f)
 747 {
 748     /* wait until we have space to put a new frame */
 749     SDL_LockMutex(f->mutex);
 750     while (f->size >= f->max_size &&
 751            !f->pktq->abort_request) {
 752         SDL_CondWait(f->cond, f->mutex);
 753     }
 754     SDL_UnlockMutex(f->mutex);
 755
 756     if (f->pktq->abort_request)
 757         return NULL;
 758
 759     return &f->queue[f->windex];
 760 }
 761
 762 static Frame *frame_queue_peek_readable(FrameQueue *f)
 763 {
 764     /* wait until we have a readable a new frame */
 765     SDL_LockMutex(f->mutex);
 766     while (f->size - f->rindex_shown <= 0 &&
 767            !f->pktq->abort_request) {
 768         SDL_CondWait(f->cond, f->mutex);
 769     }
 770     SDL_UnlockMutex(f->mutex);
 771
 772     if (f->pktq->abort_request)
 773         return NULL;
 774
 775     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
 776 }
 777
 778 static void frame_queue_push(FrameQueue *f)
 779 {
 780     if (++f->windex == f->max_size)
 781         f->windex = 0;
 782     SDL_LockMutex(f->mutex);
 783     f->size++;
 784     SDL_CondSignal(f->cond);
 785     SDL_UnlockMutex(f->mutex);
 786 }
 787
 788 static void frame_queue_next(FrameQueue *f)
 789 {
 790     if (f->keep_last && !f->rindex_shown) {
 791         f->rindex_shown = 1;
 792         return;
 793     }
 794     frame_queue_unref_item(&f->queue[f->rindex]);
 795     if (++f->rindex == f->max_size)
 796         f->rindex = 0;
 797     SDL_LockMutex(f->mutex);
 798     f->size--;
 799     SDL_CondSignal(f->cond);
 800     SDL_UnlockMutex(f->mutex);
 801 }
 802
 803 /* return the number of undisplayed frames in the queue */
 804 static int frame_queue_nb_remaining(FrameQueue *f)
 805 {
 806     return f->size - f->rindex_shown;
 807 }
 808
 809 /* return last shown position */
 810 static int64_t frame_queue_last_pos(FrameQueue *f)
 811 {
 812     Frame *fp = &f->queue[f->rindex];
 813     if (f->rindex_shown && fp->serial == f->pktq->serial)
 814         return fp->pos;
 815     else
 816         return -1;
 817 }
 818
 819 static void decoder_abort(Decoder *d, FrameQueue *fq)
 820 {
 821     packet_queue_abort(d->queue);
 822     frame_queue_signal(fq);
 823     SDL_WaitThread(d->decoder_tid, NULL);
 824     d->decoder_tid = NULL;
 825     packet_queue_flush(d->queue);
 826 }
 827
 828 static inline void fill_rectangle(int x, int y, int w, int h)
 829 {
 830     SDL_Rect rect;
 831     rect.x = x;
 832     rect.y = y;
 833     rect.w = w;
 834     rect.h = h;
 835     if (w && h)
 836         SDL_RenderFillRect(renderer, &rect);
 837 }
 838
 839 static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
 840 {
 841     Uint32 format;
 842     int access, w, h;
 843     if (!*texture || SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
 844         void *pixels;
 845         int pitch;
 846         if (*texture)
 847             SDL_DestroyTexture(*texture);
 848         if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
 849             return -1;
 850         if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
 851             return -1;
 852         if (init_texture) {
 853             if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
 854                 return -1;
 855             memset(pixels, 0, pitch * new_height);
 856             SDL_UnlockTexture(*texture);
 857         }
 858         av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
 859     }
 860     return 0;
 861 }
 862
 863 static void calculate_display_rect(SDL_Rect *rect,
 864                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
 865                                    int pic_width, int pic_height, AVRational pic_sar)
 866 {
 867     AVRational aspect_ratio = pic_sar;
 868     int64_t width, height, x, y;
 869
 870     if (av_cmp_q(aspect_ratio, av_make_q(0, 1)) <= 0)
 871         aspect_ratio = av_make_q(1, 1);
 872
 873     aspect_ratio = av_mul_q(aspect_ratio, av_make_q(pic_width, pic_height));
 874
 875     /* XXX: we suppose the screen has a 1.0 pixel ratio */
 876     height = scr_height;
 877     width = av_rescale(height, aspect_ratio.num, aspect_ratio.den) & ~1;
 878     if (width > scr_width) {
 879         width = scr_width;
 880         height = av_rescale(width, aspect_ratio.den, aspect_ratio.num) & ~1;
 881     }
 882     x = (scr_width - width) / 2;
 883     y = (scr_height - height) / 2;
 884     rect->x = scr_xleft + x;
 885     rect->y = scr_ytop  + y;
 886     rect->w = FFMAX((int)width,  1);
 887     rect->h = FFMAX((int)height, 1);
 888 }
 889
 890 static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
 891 {
 892     int i;
 893     *sdl_blendmode = SDL_BLENDMODE_NONE;
 894     *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
 895     if (format == AV_PIX_FMT_RGB32   ||
 896         format == AV_PIX_FMT_RGB32_1 ||
 897         format == AV_PIX_FMT_BGR32   ||
 898         format == AV_PIX_FMT_BGR32_1)
 899         *sdl_blendmode = SDL_BLENDMODE_BLEND;
 900     for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
 901         if (format == sdl_texture_format_map[i].format) {
 902             *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
 903             return;
 904         }
 905     }
 906 }
 907
 908 static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
 909     int ret = 0;
 910     Uint32 sdl_pix_fmt;
 911     SDL_BlendMode sdl_blendmode;
 912     get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
 913     if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
 914         return -1;
 915     switch (sdl_pix_fmt) {
 916         case SDL_PIXELFORMAT_UNKNOWN:
 917             /* This should only happen if we are not using avfilter... */
 918             *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
 919                 frame->width, frame->height, frame->format, frame->width, frame->height,
 920                 AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
 921             if (*img_convert_ctx != NULL) {
 922                 uint8_t *pixels[4];
 923                 int pitch[4];
 924                 if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
 925                     sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
 926                               0, frame->height, pixels, pitch);
 927                     SDL_UnlockTexture(*tex);
 928                 }
 929             } else {
 930                 av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
 931                 ret = -1;
 932             }
 933             break;
 934         case SDL_PIXELFORMAT_IYUV:
 935             if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
 936                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
 937                                                        frame->data[1], frame->linesize[1],
 938                                                        frame->data[2], frame->linesize[2]);
 939             } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
 940                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height                    - 1), -frame->linesize[0],
 941                                                        frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
 942                                                        frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
 943             } else {
 944                 av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
 945                 return -1;
 946             }
 947             break;
 948         default:
 949             if (frame->linesize[0] < 0) {
 950                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
 951             } else {
 952                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
 953             }
 954             break;
 955     }
 956     return ret;
 957 }
 958
 959 static void set_sdl_yuv_conversion_mode(AVFrame *frame)
 960 {
 961 #if SDL_VERSION_ATLEAST(2,0,8)
 962     SDL_YUV_CONVERSION_MODE mode = SDL_YUV_CONVERSION_AUTOMATIC;
 963     if (frame && (frame->format == AV_PIX_FMT_YUV420P || frame->format == AV_PIX_FMT_YUYV422 || frame->format == AV_PIX_FMT_UYVY422)) {
 964         if (frame->color_range == AVCOL_RANGE_JPEG)
 965             mode = SDL_YUV_CONVERSION_JPEG;
 966         else if (frame->colorspace == AVCOL_SPC_BT709)
 967             mode = SDL_YUV_CONVERSION_BT709;
 968         else if (frame->colorspace == AVCOL_SPC_BT470BG || frame->colorspace == AVCOL_SPC_SMPTE170M || frame->colorspace == AVCOL_SPC_SMPTE240M)
 969             mode = SDL_YUV_CONVERSION_BT601;
 970     }
 971     SDL_SetYUVConversionMode(mode);
 972 #endif
 973 }
 974
 975 static void video_image_display(VideoState *is)
 976 {
 977     Frame *vp;
 978     Frame *sp = NULL;
 979     SDL_Rect rect;
 980
 981     vp = frame_queue_peek_last(&is->pictq);
 982     if (is->subtitle_st) {
 983         if (frame_queue_nb_remaining(&is->subpq) > 0) {
 984             sp = frame_queue_peek(&is->subpq);
 985
 986             if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
 987                 if (!sp->uploaded) {
 988                     uint8_t* pixels[4];
 989                     int pitch[4];
 990                     int i;
 991                     if (!sp->width || !sp->height) {
 992                         sp->width = vp->width;
 993                         sp->height = vp->height;
 994                     }
 995                     if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
 996                         return;
 997
 998                     for (i = 0; i < sp->sub.num_rects; i++) {
 999                         AVSubtitleRect *sub_rect = sp->sub.rects[i];
1000
1001                         sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
1002                         sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
1003                         sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
1004                         sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
1005
1006                         is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
1007                             sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
1008                             sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
1009                             0, NULL, NULL, NULL);
1010                         if (!is->sub_convert_ctx) {
1011                             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1012                             return;
1013                         }
1014                         if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
1015                             sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
1016                                       0, sub_rect->h, pixels, pitch);
1017                             SDL_UnlockTexture(is->sub_texture);
1018                         }
1019                     }
1020                     sp->uploaded = 1;
1021                 }
1022             } else
1023                 sp = NULL;
1024         }
1025     }
1026
1027     calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1028
1029     if (!vp->uploaded) {
1030         if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
1031             return;
1032         vp->uploaded = 1;
1033         vp->flip_v = vp->frame->linesize[0] < 0;
1034     }
1035
1036     set_sdl_yuv_conversion_mode(vp->frame);
1037     SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
1038     set_sdl_yuv_conversion_mode(NULL);
1039     if (sp) {
1040 #if USE_ONEPASS_SUBTITLE_RENDER
1041         SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
1042 #else
1043         int i;
1044         double xratio = (double)rect.w / (double)sp->width;
1045         double yratio = (double)rect.h / (double)sp->height;
1046         for (i = 0; i < sp->sub.num_rects; i++) {
1047             SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
1048             SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
1049                                .y = rect.y + sub_rect->y * yratio,
1050                                .w = sub_rect->w * xratio,
1051                                .h = sub_rect->h * yratio};
1052             SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
1053         }
1054 #endif
1055     }
1056 }
1057
1058 static inline int compute_mod(int a, int b)
1059 {
1060     return a < 0 ? a%b + b : a%b;
1061 }
1062
1063 static void video_audio_display(VideoState *s)
1064 {
1065     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1066     int ch, channels, h, h2;
1067     int64_t time_diff;
1068     int rdft_bits, nb_freq;
1069
1070     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1071         ;
1072     nb_freq = 1 << (rdft_bits - 1);
1073
1074     /* compute display index : center on currently output samples */
1075     channels = s->audio_tgt.channels;
1076     nb_display_channels = channels;
1077     if (!s->paused) {
1078         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1079         n = 2 * channels;
1080         delay = s->audio_write_buf_size;
1081         delay /= n;
1082
1083         /* to be more precise, we take into account the time spent since
1084            the last buffer computation */
1085         if (audio_callback_time) {
1086             time_diff = av_gettime_relative() - audio_callback_time;
1087             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1088         }
1089
1090         delay += 2 * data_used;
1091         if (delay < data_used)
1092             delay = data_used;
1093
1094         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1095         if (s->show_mode == SHOW_MODE_WAVES) {
1096             h = INT_MIN;
1097             for (i = 0; i < 1000; i += channels) {
1098                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1099                 int a = s->sample_array[idx];
1100                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1101                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1102                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1103                 int score = a - d;
1104                 if (h < score && (b ^ c) < 0) {
1105                     h = score;
1106                     i_start = idx;
1107                 }
1108             }
1109         }
1110
1111         s->last_i_start = i_start;
1112     } else {
1113         i_start = s->last_i_start;
1114     }
1115
1116     if (s->show_mode == SHOW_MODE_WAVES) {
1117         SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
1118
1119         /* total height for one channel */
1120         h = s->height / nb_display_channels;
1121         /* graph height / 2 */
1122         h2 = (h * 9) / 20;
1123         for (ch = 0; ch < nb_display_channels; ch++) {
1124             i = i_start + ch;
1125             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1126             for (x = 0; x < s->width; x++) {
1127                 y = (s->sample_array[i] * h2) >> 15;
1128                 if (y < 0) {
1129                     y = -y;
1130                     ys = y1 - y;
1131                 } else {
1132                     ys = y1;
1133                 }
1134                 fill_rectangle(s->xleft + x, ys, 1, y);
1135                 i += channels;
1136                 if (i >= SAMPLE_ARRAY_SIZE)
1137                     i -= SAMPLE_ARRAY_SIZE;
1138             }
1139         }
1140
1141         SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
1142
1143         for (ch = 1; ch < nb_display_channels; ch++) {
1144             y = s->ytop + ch * h;
1145             fill_rectangle(s->xleft, y, s->width, 1);
1146         }
1147     } else {
1148         if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
1149             return;
1150
1151         if (s->xpos >= s->width)
1152             s->xpos = 0;
1153         nb_display_channels= FFMIN(nb_display_channels, 2);
1154         if (rdft_bits != s->rdft_bits) {
1155             av_rdft_end(s->rdft);
1156             av_free(s->rdft_data);
1157             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1158             s->rdft_bits = rdft_bits;
1159             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1160         }
1161         if (!s->rdft || !s->rdft_data){
1162             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1163             s->show_mode = SHOW_MODE_WAVES;
1164         } else {
1165             FFTSample *data[2];
1166             SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
1167             uint32_t *pixels;
1168             int pitch;
1169             for (ch = 0; ch < nb_display_channels; ch++) {
1170                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1171                 i = i_start + ch;
1172                 for (x = 0; x < 2 * nb_freq; x++) {
1173                     double w = (x-nb_freq) * (1.0 / nb_freq);
1174                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1175                     i += channels;
1176                     if (i >= SAMPLE_ARRAY_SIZE)
1177                         i -= SAMPLE_ARRAY_SIZE;
1178                 }
1179                 av_rdft_calc(s->rdft, data[ch]);
1180             }
1181             /* Least efficient way to do this, we should of course
1182              * directly access it but it is more than fast enough. */
1183             if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
1184                 pitch >>= 2;
1185                 pixels += pitch * s->height;
1186                 for (y = 0; y < s->height; y++) {
1187                     double w = 1 / sqrt(nb_freq);
1188                     int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
1189                     int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1190                                                         : a;
1191                     a = FFMIN(a, 255);
1192                     b = FFMIN(b, 255);
1193                     pixels -= pitch;
1194                     *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
1195                 }
1196                 SDL_UnlockTexture(s->vis_texture);
1197             }
1198             SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
1199         }
1200         if (!s->paused)
1201             s->xpos++;
1202     }
1203 }
1204
1205 static void stream_component_close(VideoState *is, int stream_index)
1206 {
1207     AVFormatContext *ic = is->ic;
1208     AVCodecParameters *codecpar;
1209
1210     if (stream_index < 0 || stream_index >= ic->nb_streams)
1211         return;
1212     codecpar = ic->streams[stream_index]->codecpar;
1213
1214     switch (codecpar->codec_type) {
1215     case AVMEDIA_TYPE_AUDIO:
1216         decoder_abort(&is->auddec, &is->sampq);
1217         SDL_CloseAudioDevice(audio_dev);
1218         decoder_destroy(&is->auddec);
1219         swr_free(&is->swr_ctx);
1220         av_freep(&is->audio_buf1);
1221         is->audio_buf1_size = 0;
1222         is->audio_buf = NULL;
1223
1224         if (is->rdft) {
1225             av_rdft_end(is->rdft);
1226             av_freep(&is->rdft_data);
1227             is->rdft = NULL;
1228             is->rdft_bits = 0;
1229         }
1230         break;
1231     case AVMEDIA_TYPE_VIDEO:
1232         decoder_abort(&is->viddec, &is->pictq);
1233         decoder_destroy(&is->viddec);
1234         break;
1235     case AVMEDIA_TYPE_SUBTITLE:
1236         decoder_abort(&is->subdec, &is->subpq);
1237         decoder_destroy(&is->subdec);
1238         break;
1239     default:
1240         break;
1241     }
1242
1243     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1244     switch (codecpar->codec_type) {
1245     case AVMEDIA_TYPE_AUDIO:
1246         is->audio_st = NULL;
1247         is->audio_stream = -1;
1248         break;
1249     case AVMEDIA_TYPE_VIDEO:
1250         is->video_st = NULL;
1251         is->video_stream = -1;
1252         break;
1253     case AVMEDIA_TYPE_SUBTITLE:
1254         is->subtitle_st = NULL;
1255         is->subtitle_stream = -1;
1256         break;
1257     default:
1258         break;
1259     }
1260 }
1261
1262 static void stream_close(VideoState *is)
1263 {
1264     /* XXX: use a special url_shutdown call to abort parse cleanly */
1265     is->abort_request = 1;
1266     SDL_WaitThread(is->read_tid, NULL);
1267
1268     /* close each stream */
1269     if (is->audio_stream >= 0)
1270         stream_component_close(is, is->audio_stream);
1271     if (is->video_stream >= 0)
1272         stream_component_close(is, is->video_stream);
1273     if (is->subtitle_stream >= 0)
1274         stream_component_close(is, is->subtitle_stream);
1275
1276     avformat_close_input(&is->ic);
1277
1278     packet_queue_destroy(&is->videoq);
1279     packet_queue_destroy(&is->audioq);
1280     packet_queue_destroy(&is->subtitleq);
1281
1282     /* free all pictures */
1283     frame_queue_destory(&is->pictq);
1284     frame_queue_destory(&is->sampq);
1285     frame_queue_destory(&is->subpq);
1286     SDL_DestroyCond(is->continue_read_thread);
1287     sws_freeContext(is->img_convert_ctx);
1288     sws_freeContext(is->sub_convert_ctx);
1289     av_free(is->filename);
1290     if (is->vis_texture)
1291         SDL_DestroyTexture(is->vis_texture);
1292     if (is->vid_texture)
1293         SDL_DestroyTexture(is->vid_texture);
1294     if (is->sub_texture)
1295         SDL_DestroyTexture(is->sub_texture);
1296     av_free(is);
1297 }
1298
1299 static void do_exit(VideoState *is)
1300 {
1301     if (is) {
1302         stream_close(is);
1303     }
1304     if (renderer)
1305         SDL_DestroyRenderer(renderer);
1306     if (window)
1307         SDL_DestroyWindow(window);
1308     uninit_opts();
1309 #if CONFIG_AVFILTER
1310     av_freep(&vfilters_list);
1311 #endif
1312     avformat_network_deinit();
1313     if (show_status)
1314         printf("\n");
1315     SDL_Quit();
1316     av_log(NULL, AV_LOG_QUIET, "%s", "");
1317     exit(0);
1318 }
1319
1320 static void sigterm_handler(int sig)
1321 {
1322     exit(123);
1323 }
1324
1325 static void set_default_window_size(int width, int height, AVRational sar)
1326 {
1327     SDL_Rect rect;
1328     int max_width  = screen_width  ? screen_width  : INT_MAX;
1329     int max_height = screen_height ? screen_height : INT_MAX;
1330     if (max_width == INT_MAX && max_height == INT_MAX)
1331         max_height = height;
1332     calculate_display_rect(&rect, 0, 0, max_width, max_height, width, height, sar);
1333     default_width  = rect.w;
1334     default_height = rect.h;
1335 }
1336
1337 static int video_open(VideoState *is)
1338 {
1339     int w,h;
1340
1341     w = screen_width ? screen_width : default_width;
1342     h = screen_height ? screen_height : default_height;
1343
1344     if (!window_title)
1345         window_title = input_filename;
1346     SDL_SetWindowTitle(window, window_title);
1347
1348     SDL_SetWindowSize(window, w, h);
1349     SDL_SetWindowPosition(window, screen_left, screen_top);
1350     if (is_full_screen)
1351         SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
1352     SDL_ShowWindow(window);
1353
1354     is->width  = w;
1355     is->height = h;
1356
1357     return 0;
1358 }
1359
1360 /* display the current picture, if any */
1361 static void video_display(VideoState *is)
1362 {
1363     if (!is->width)
1364         video_open(is);
1365
1366     SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
1367     SDL_RenderClear(renderer);
1368     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1369         video_audio_display(is);
1370     else if (is->video_st)
1371         video_image_display(is);
1372     SDL_RenderPresent(renderer);
1373 }
1374
1375 static double get_clock(Clock *c)
1376 {
1377     if (*c->queue_serial != c->serial)
1378         return NAN;
1379     if (c->paused) {
1380         return c->pts;
1381     } else {
1382         double time = av_gettime_relative() / 1000000.0;
1383         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1384     }
1385 }
1386
1387 static void set_clock_at(Clock *c, double pts, int serial, double time)
1388 {
1389     c->pts = pts;
1390     c->last_updated = time;
1391     c->pts_drift = c->pts - time;
1392     c->serial = serial;
1393 }
1394
1395 static void set_clock(Clock *c, double pts, int serial)
1396 {
1397     double time = av_gettime_relative() / 1000000.0;
1398     set_clock_at(c, pts, serial, time);
1399 }
1400
1401 static void set_clock_speed(Clock *c, double speed)
1402 {
1403     set_clock(c, get_clock(c), c->serial);
1404     c->speed = speed;
1405 }
1406
1407 static void init_clock(Clock *c, int *queue_serial)
1408 {
1409     c->speed = 1.0;
1410     c->paused = 0;
1411     c->queue_serial = queue_serial;
1412     set_clock(c, NAN, -1);
1413 }
1414
1415 static void sync_clock_to_slave(Clock *c, Clock *slave)
1416 {
1417     double clock = get_clock(c);
1418     double slave_clock = get_clock(slave);
1419     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1420         set_clock(c, slave_clock, slave->serial);
1421 }
1422
1423 static int get_master_sync_type(VideoState *is) {
1424     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1425         if (is->video_st)
1426             return AV_SYNC_VIDEO_MASTER;
1427         else
1428             return AV_SYNC_AUDIO_MASTER;
1429     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1430         if (is->audio_st)
1431             return AV_SYNC_AUDIO_MASTER;
1432         else
1433             return AV_SYNC_EXTERNAL_CLOCK;
1434     } else {
1435         return AV_SYNC_EXTERNAL_CLOCK;
1436     }
1437 }
1438
1439 /* get the current master clock value */
1440 static double get_master_clock(VideoState *is)
1441 {
1442     double val;
1443
1444     switch (get_master_sync_type(is)) {
1445         case AV_SYNC_VIDEO_MASTER:
1446             val = get_clock(&is->vidclk);
1447             break;
1448         case AV_SYNC_AUDIO_MASTER:
1449             val = get_clock(&is->audclk);
1450             break;
1451         default:
1452             val = get_clock(&is->extclk);
1453             break;
1454     }
1455     return val;
1456 }
1457
1458 static void check_external_clock_speed(VideoState *is) {
1459    if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1460        is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1461        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1462    } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1463               (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1464        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1465    } else {
1466        double speed = is->extclk.speed;
1467        if (speed != 1.0)
1468            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1469    }
1470 }
1471
1472 /* seek in the stream */
1473 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1474 {
1475     if (!is->seek_req) {
1476         is->seek_pos = pos;
1477         is->seek_rel = rel;
1478         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1479         if (seek_by_bytes)
1480             is->seek_flags |= AVSEEK_FLAG_BYTE;
1481         is->seek_req = 1;
1482         SDL_CondSignal(is->continue_read_thread);
1483     }
1484 }
1485
1486 /* pause or resume the video */
1487 static void stream_toggle_pause(VideoState *is)
1488 {
1489     if (is->paused) {
1490         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1491         if (is->read_pause_return != AVERROR(ENOSYS)) {
1492             is->vidclk.paused = 0;
1493         }
1494         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1495     }
1496     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1497     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1498 }
1499
1500 static void toggle_pause(VideoState *is)
1501 {
1502     stream_toggle_pause(is);
1503     is->step = 0;
1504 }
1505
1506 static void toggle_mute(VideoState *is)
1507 {
1508     is->muted = !is->muted;
1509 }
1510
1511 static void update_volume(VideoState *is, int sign, double step)
1512 {
1513     double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
1514     int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
1515     is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
1516 }
1517
1518 static void step_to_next_frame(VideoState *is)
1519 {
1520     /* if the stream is paused unpause it, then step */
1521     if (is->paused)
1522         stream_toggle_pause(is);
1523     is->step = 1;
1524 }
1525
1526 static double compute_target_delay(double delay, VideoState *is)
1527 {
1528     double sync_threshold, diff = 0;
1529
1530     /* update delay to follow master synchronisation source */
1531     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1532         /* if video is slave, we try to correct big delays by
1533            duplicating or deleting a frame */
1534         diff = get_clock(&is->vidclk) - get_master_clock(is);
1535
1536         /* skip or repeat frame. We take into account the
1537            delay to compute the threshold. I still don't know
1538            if it is the best guess */
1539         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1540         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1541             if (diff <= -sync_threshold)
1542                 delay = FFMAX(0, delay + diff);
1543             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1544                 delay = delay + diff;
1545             else if (diff >= sync_threshold)
1546                 delay = 2 * delay;
1547         }
1548     }
1549
1550     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1551             delay, -diff);
1552
1553     return delay;
1554 }
1555
1556 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1557     if (vp->serial == nextvp->serial) {
1558         double duration = nextvp->pts - vp->pts;
1559         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1560             return vp->duration;
1561         else
1562             return duration;
1563     } else {
1564         return 0.0;
1565     }
1566 }
1567
1568 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1569     /* update current video pts */
1570     set_clock(&is->vidclk, pts, serial);
1571     sync_clock_to_slave(&is->extclk, &is->vidclk);
1572 }
1573
1574 /* called to display each frame */
1575 static void video_refresh(void *opaque, double *remaining_time)
1576 {
1577     VideoState *is = opaque;
1578     double time;
1579
1580     Frame *sp, *sp2;
1581
1582     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1583         check_external_clock_speed(is);
1584
1585     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1586         time = av_gettime_relative() / 1000000.0;
1587         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1588             video_display(is);
1589             is->last_vis_time = time;
1590         }
1591         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1592     }
1593
1594     if (is->video_st) {
1595 retry:
1596         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1597             // nothing to do, no picture to display in the queue
1598         } else {
1599             double last_duration, duration, delay;
1600             Frame *vp, *lastvp;
1601
1602             /* dequeue the picture */
1603             lastvp = frame_queue_peek_last(&is->pictq);
1604             vp = frame_queue_peek(&is->pictq);
1605
1606             if (vp->serial != is->videoq.serial) {
1607                 frame_queue_next(&is->pictq);
1608                 goto retry;
1609             }
1610
1611             if (lastvp->serial != vp->serial)
1612                 is->frame_timer = av_gettime_relative() / 1000000.0;
1613
1614             if (is->paused)
1615                 goto display;
1616
1617             /* compute nominal last_duration */
1618             last_duration = vp_duration(is, lastvp, vp);
1619             delay = compute_target_delay(last_duration, is);
1620
1621             time= av_gettime_relative()/1000000.0;
1622             if (time < is->frame_timer + delay) {
1623                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1624                 goto display;
1625             }
1626
1627             is->frame_timer += delay;
1628             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1629                 is->frame_timer = time;
1630
1631             SDL_LockMutex(is->pictq.mutex);
1632             if (!isnan(vp->pts))
1633                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1634             SDL_UnlockMutex(is->pictq.mutex);
1635
1636             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1637                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1638                 duration = vp_duration(is, vp, nextvp);
1639                 if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1640                     is->frame_drops_late++;
1641                     frame_queue_next(&is->pictq);
1642                     goto retry;
1643                 }
1644             }
1645
1646             if (is->subtitle_st) {
1647                 while (frame_queue_nb_remaining(&is->subpq) > 0) {
1648                     sp = frame_queue_peek(&is->subpq);
1649
1650                     if (frame_queue_nb_remaining(&is->subpq) > 1)
1651                         sp2 = frame_queue_peek_next(&is->subpq);
1652                     else
1653                         sp2 = NULL;
1654
1655                     if (sp->serial != is->subtitleq.serial
1656                             || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1657                             || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1658                     {
1659                         if (sp->uploaded) {
1660                             int i;
1661                             for (i = 0; i < sp->sub.num_rects; i++) {
1662                                 AVSubtitleRect *sub_rect = sp->sub.rects[i];
1663                                 uint8_t *pixels;
1664                                 int pitch, j;
1665
1666                                 if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
1667                                     for (j = 0; j < sub_rect->h; j++, pixels += pitch)
1668                                         memset(pixels, 0, sub_rect->w << 2);
1669                                     SDL_UnlockTexture(is->sub_texture);
1670                                 }
1671                             }
1672                         }
1673                         frame_queue_next(&is->subpq);
1674                     } else {
1675                         break;
1676                     }
1677                 }
1678             }
1679
1680             frame_queue_next(&is->pictq);
1681             is->force_refresh = 1;
1682
1683             if (is->step && !is->paused)
1684                 stream_toggle_pause(is);
1685         }
1686 display:
1687         /* display picture */
1688         if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
1689             video_display(is);
1690     }
1691     is->force_refresh = 0;
1692     if (show_status) {
1693         AVBPrint buf;
1694         static int64_t last_time;
1695         int64_t cur_time;
1696         int aqsize, vqsize, sqsize;
1697         double av_diff;
1698
1699         cur_time = av_gettime_relative();
1700         if (!last_time || (cur_time - last_time) >= 30000) {
1701             aqsize = 0;
1702             vqsize = 0;
1703             sqsize = 0;
1704             if (is->audio_st)
1705                 aqsize = is->audioq.size;
1706             if (is->video_st)
1707                 vqsize = is->videoq.size;
1708             if (is->subtitle_st)
1709                 sqsize = is->subtitleq.size;
1710             av_diff = 0;
1711             if (is->audio_st && is->video_st)
1712                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1713             else if (is->video_st)
1714                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1715             else if (is->audio_st)
1716                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1717
1718             av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
1719             av_bprintf(&buf,
1720                       "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1721                       get_master_clock(is),
1722                       (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1723                       av_diff,
1724                       is->frame_drops_early + is->frame_drops_late,
1725                       aqsize / 1024,
1726                       vqsize / 1024,
1727                       sqsize,
1728                       is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
1729                       is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
1730
1731             if (show_status == 1 && AV_LOG_INFO > av_log_get_level())
1732                 fprintf(stderr, "%s", buf.str);
1733             else
1734                 av_log(NULL, AV_LOG_INFO, "%s", buf.str);
1735
1736             fflush(stderr);
1737             av_bprint_finalize(&buf, NULL);
1738
1739             last_time = cur_time;
1740         }
1741     }
1742 }
1743
1744 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1745 {
1746     Frame *vp;
1747
1748 #if defined(DEBUG_SYNC)
1749     printf("frame_type=%c pts=%0.3f\n",
1750            av_get_picture_type_char(src_frame->pict_type), pts);
1751 #endif
1752
1753     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1754         return -1;
1755
1756     vp->sar = src_frame->sample_aspect_ratio;
1757     vp->uploaded = 0;
1758
1759     vp->width = src_frame->width;
1760     vp->height = src_frame->height;
1761     vp->format = src_frame->format;
1762
1763     vp->pts = pts;
1764     vp->duration = duration;
1765     vp->pos = pos;
1766     vp->serial = serial;
1767
1768     set_default_window_size(vp->width, vp->height, vp->sar);
1769
1770     av_frame_move_ref(vp->frame, src_frame);
1771     frame_queue_push(&is->pictq);
1772     return 0;
1773 }
1774
1775 static int get_video_frame(VideoState *is, AVFrame *frame)
1776 {
1777     int got_picture;
1778
1779     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1780         return -1;
1781
1782     if (got_picture) {
1783         double dpts = NAN;
1784
1785         if (frame->pts != AV_NOPTS_VALUE)
1786             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1787
1788         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1789
1790         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1791             if (frame->pts != AV_NOPTS_VALUE) {
1792                 double diff = dpts - get_master_clock(is);
1793                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1794                     diff - is->frame_last_filter_delay < 0 &&
1795                     is->viddec.pkt_serial == is->vidclk.serial &&
1796                     is->videoq.nb_packets) {
1797                     is->frame_drops_early++;
1798                     av_frame_unref(frame);
1799                     got_picture = 0;
1800                 }
1801             }
1802         }
1803     }
1804
1805     return got_picture;
1806 }
1807
1808 #if CONFIG_AVFILTER
1809 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1810                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1811 {
1812     int ret, i;
1813     int nb_filters = graph->nb_filters;
1814     AVFilterInOut *outputs = NULL, *inputs = NULL;
1815
1816     if (filtergraph) {
1817         outputs = avfilter_inout_alloc();
1818         inputs  = avfilter_inout_alloc();
1819         if (!outputs || !inputs) {
1820             ret = AVERROR(ENOMEM);
1821             goto fail;
1822         }
1823
1824         outputs->name       = av_strdup("in");
1825         outputs->filter_ctx = source_ctx;
1826         outputs->pad_idx    = 0;
1827         outputs->next       = NULL;
1828
1829         inputs->name        = av_strdup("out");
1830         inputs->filter_ctx  = sink_ctx;
1831         inputs->pad_idx     = 0;
1832         inputs->next        = NULL;
1833
1834         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1835             goto fail;
1836     } else {
1837         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1838             goto fail;
1839     }
1840
1841     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1842     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1843         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1844
1845     ret = avfilter_graph_config(graph, NULL);
1846 fail:
1847     avfilter_inout_free(&outputs);
1848     avfilter_inout_free(&inputs);
1849     return ret;
1850 }
1851
1852 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1853 {
1854     enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
1855     char sws_flags_str[512] = "";
1856     char buffersrc_args[256];
1857     int ret;
1858     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1859     AVCodecParameters *codecpar = is->video_st->codecpar;
1860     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1861     AVDictionaryEntry *e = NULL;
1862     int nb_pix_fmts = 0;
1863     int i, j;
1864
1865     for (i = 0; i < renderer_info.num_texture_formats; i++) {
1866         for (j = 0; j < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; j++) {
1867             if (renderer_info.texture_formats[i] == sdl_texture_format_map[j].texture_fmt) {
1868                 pix_fmts[nb_pix_fmts++] = sdl_texture_format_map[j].format;
1869                 break;
1870             }
1871         }
1872     }
1873     pix_fmts[nb_pix_fmts] = AV_PIX_FMT_NONE;
1874
1875     while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1876         if (!strcmp(e->key, "sws_flags")) {
1877             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1878         } else
1879             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1880     }
1881     if (strlen(sws_flags_str))
1882         sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1883
1884     graph->scale_sws_opts = av_strdup(sws_flags_str);
1885
1886     snprintf(buffersrc_args, sizeof(buffersrc_args),
1887              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1888              frame->width, frame->height, frame->format,
1889              is->video_st->time_base.num, is->video_st->time_base.den,
1890              codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
1891     if (fr.num && fr.den)
1892         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1893
1894     if ((ret = avfilter_graph_create_filter(&filt_src,
1895                                             avfilter_get_by_name("buffer"),
1896                                             "ffplay_buffer", buffersrc_args, NULL,
1897                                             graph)) < 0)
1898         goto fail;
1899
1900     ret = avfilter_graph_create_filter(&filt_out,
1901                                        avfilter_get_by_name("buffersink"),
1902                                        "ffplay_buffersink", NULL, NULL, graph);
1903     if (ret < 0)
1904         goto fail;
1905
1906     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1907         goto fail;
1908
1909     last_filter = filt_out;
1910
1911 /* Note: this macro adds a filter before the lastly added filter, so the
1912  * processing order of the filters is in reverse */
1913 #define INSERT_FILT(name, arg) do {                                          \
1914     AVFilterContext *filt_ctx;                                               \
1915                                                                              \
1916     ret = avfilter_graph_create_filter(&filt_ctx,                            \
1917                                        avfilter_get_by_name(name),           \
1918                                        "ffplay_" name, arg, NULL, graph);    \
1919     if (ret < 0)                                                             \
1920         goto fail;                                                           \
1921                                                                              \
1922     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1923     if (ret < 0)                                                             \
1924         goto fail;                                                           \
1925                                                                              \
1926     last_filter = filt_ctx;                                                  \
1927 } while (0)
1928
1929     if (autorotate) {
1930         double theta  = get_rotation(is->video_st);
1931
1932         if (fabs(theta - 90) < 1.0) {
1933             INSERT_FILT("transpose", "clock");
1934         } else if (fabs(theta - 180) < 1.0) {
1935             INSERT_FILT("hflip", NULL);
1936             INSERT_FILT("vflip", NULL);
1937         } else if (fabs(theta - 270) < 1.0) {
1938             INSERT_FILT("transpose", "cclock");
1939         } else if (fabs(theta) > 1.0) {
1940             char rotate_buf[64];
1941             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1942             INSERT_FILT("rotate", rotate_buf);
1943         }
1944     }
1945
1946     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1947         goto fail;
1948
1949     is->in_video_filter  = filt_src;
1950     is->out_video_filter = filt_out;
1951
1952 fail:
1953     return ret;
1954 }
1955
1956 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1957 {
1958     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1959     int sample_rates[2] = { 0, -1 };
1960     int64_t channel_layouts[2] = { 0, -1 };
1961     int channels[2] = { 0, -1 };
1962     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1963     char aresample_swr_opts[512] = "";
1964     AVDictionaryEntry *e = NULL;
1965     char asrc_args[256];
1966     int ret;
1967
1968     avfilter_graph_free(&is->agraph);
1969     if (!(is->agraph = avfilter_graph_alloc()))
1970         return AVERROR(ENOMEM);
1971     is->agraph->nb_threads = filter_nbthreads;
1972
1973     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1974         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1975     if (strlen(aresample_swr_opts))
1976         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1977     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1978
1979     ret = snprintf(asrc_args, sizeof(asrc_args),
1980                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1981                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1982                    is->audio_filter_src.channels,
1983                    1, is->audio_filter_src.freq);
1984     if (is->audio_filter_src.channel_layout)
1985         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1986                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1987
1988     ret = avfilter_graph_create_filter(&filt_asrc,
1989                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1990                                        asrc_args, NULL, is->agraph);
1991     if (ret < 0)
1992         goto end;
1993
1994
1995     ret = avfilter_graph_create_filter(&filt_asink,
1996                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1997                                        NULL, NULL, is->agraph);
1998     if (ret < 0)
1999         goto end;
2000
2001     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2002         goto end;
2003     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2004         goto end;
2005
2006     if (force_output_format) {
2007         channel_layouts[0] = is->audio_tgt.channel_layout;
2008         channels       [0] = is->audio_tgt.channel_layout ? -1 : is->audio_tgt.channels;
2009         sample_rates   [0] = is->audio_tgt.freq;
2010         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2011             goto end;
2012         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2013             goto end;
2014         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2015             goto end;
2016         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2017             goto end;
2018     }
2019
2020
2021     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2022         goto end;
2023
2024     is->in_audio_filter  = filt_asrc;
2025     is->out_audio_filter = filt_asink;
2026
2027 end:
2028     if (ret < 0)
2029         avfilter_graph_free(&is->agraph);
2030     return ret;
2031 }
2032 #endif  /* CONFIG_AVFILTER */
2033
2034 static int audio_thread(void *arg)
2035 {
2036     VideoState *is = arg;
2037     AVFrame *frame = av_frame_alloc();
2038     Frame *af;
2039 #if CONFIG_AVFILTER
2040     int last_serial = -1;
2041     int64_t dec_channel_layout;
2042     int reconfigure;
2043 #endif
2044     int got_frame = 0;
2045     AVRational tb;
2046     int ret = 0;
2047
2048     if (!frame)
2049         return AVERROR(ENOMEM);
2050
2051     do {
2052         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2053             goto the_end;
2054
2055         if (got_frame) {
2056                 tb = (AVRational){1, frame->sample_rate};
2057
2058 #if CONFIG_AVFILTER
2059                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
2060
2061                 reconfigure =
2062                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2063                                    frame->format, frame->channels)    ||
2064                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2065                     is->audio_filter_src.freq           != frame->sample_rate ||
2066                     is->auddec.pkt_serial               != last_serial;
2067
2068                 if (reconfigure) {
2069                     char buf1[1024], buf2[1024];
2070                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2071                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2072                     av_log(NULL, AV_LOG_DEBUG,
2073                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2074                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2075                            frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2076
2077                     is->audio_filter_src.fmt            = frame->format;
2078                     is->audio_filter_src.channels       = frame->channels;
2079                     is->audio_filter_src.channel_layout = dec_channel_layout;
2080                     is->audio_filter_src.freq           = frame->sample_rate;
2081                     last_serial                         = is->auddec.pkt_serial;
2082
2083                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2084                         goto the_end;
2085                 }
2086
2087             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2088                 goto the_end;
2089
2090             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2091                 tb = av_buffersink_get_time_base(is->out_audio_filter);
2092 #endif
2093                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2094                     goto the_end;
2095
2096                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2097                 af->pos = frame->pkt_pos;
2098                 af->serial = is->auddec.pkt_serial;
2099                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2100
2101                 av_frame_move_ref(af->frame, frame);
2102                 frame_queue_push(&is->sampq);
2103
2104 #if CONFIG_AVFILTER
2105                 if (is->audioq.serial != is->auddec.pkt_serial)
2106                     break;
2107             }
2108             if (ret == AVERROR_EOF)
2109                 is->auddec.finished = is->auddec.pkt_serial;
2110 #endif
2111         }
2112     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2113  the_end:
2114 #if CONFIG_AVFILTER
2115     avfilter_graph_free(&is->agraph);
2116 #endif
2117     av_frame_free(&frame);
2118     return ret;
2119 }
2120
2121 static int decoder_start(Decoder *d, int (*fn)(void *), const char *thread_name, void* arg)
2122 {
2123     packet_queue_start(d->queue);
2124     d->decoder_tid = SDL_CreateThread(fn, thread_name, arg);
2125     if (!d->decoder_tid) {
2126         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2127         return AVERROR(ENOMEM);
2128     }
2129     return 0;
2130 }
2131
2132 static int video_thread(void *arg)
2133 {
2134     VideoState *is = arg;
2135     AVFrame *frame = av_frame_alloc();
2136     double pts;
2137     double duration;
2138     int ret;
2139     AVRational tb = is->video_st->time_base;
2140     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2141
2142 #if CONFIG_AVFILTER
2143     AVFilterGraph *graph = NULL;
2144     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2145     int last_w = 0;
2146     int last_h = 0;
2147     enum AVPixelFormat last_format = -2;
2148     int last_serial = -1;
2149     int last_vfilter_idx = 0;
2150 #endif
2151
2152     if (!frame)
2153         return AVERROR(ENOMEM);
2154
2155     for (;;) {
2156         ret = get_video_frame(is, frame);
2157         if (ret < 0)
2158             goto the_end;
2159         if (!ret)
2160             continue;
2161
2162 #if CONFIG_AVFILTER
2163         if (   last_w != frame->width
2164             || last_h != frame->height
2165             || last_format != frame->format
2166             || last_serial != is->viddec.pkt_serial
2167             || last_vfilter_idx != is->vfilter_idx) {
2168             av_log(NULL, AV_LOG_DEBUG,
2169                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2170                    last_w, last_h,
2171                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2172                    frame->width, frame->height,
2173                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2174             avfilter_graph_free(&graph);
2175             graph = avfilter_graph_alloc();
2176             if (!graph) {
2177                 ret = AVERROR(ENOMEM);
2178                 goto the_end;
2179             }
2180             graph->nb_threads = filter_nbthreads;
2181             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2182                 SDL_Event event;
2183                 event.type = FF_QUIT_EVENT;
2184                 event.user.data1 = is;
2185                 SDL_PushEvent(&event);
2186                 goto the_end;
2187             }
2188             filt_in  = is->in_video_filter;
2189             filt_out = is->out_video_filter;
2190             last_w = frame->width;
2191             last_h = frame->height;
2192             last_format = frame->format;
2193             last_serial = is->viddec.pkt_serial;
2194             last_vfilter_idx = is->vfilter_idx;
2195             frame_rate = av_buffersink_get_frame_rate(filt_out);
2196         }
2197
2198         ret = av_buffersrc_add_frame(filt_in, frame);
2199         if (ret < 0)
2200             goto the_end;
2201
2202         while (ret >= 0) {
2203             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2204
2205             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2206             if (ret < 0) {
2207                 if (ret == AVERROR_EOF)
2208                     is->viddec.finished = is->viddec.pkt_serial;
2209                 ret = 0;
2210                 break;
2211             }
2212
2213             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2214             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2215                 is->frame_last_filter_delay = 0;
2216             tb = av_buffersink_get_time_base(filt_out);
2217 #endif
2218             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2219             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2220             ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
2221             av_frame_unref(frame);
2222 #if CONFIG_AVFILTER
2223             if (is->videoq.serial != is->viddec.pkt_serial)
2224                 break;
2225         }
2226 #endif
2227
2228         if (ret < 0)
2229             goto the_end;
2230     }
2231  the_end:
2232 #if CONFIG_AVFILTER
2233     avfilter_graph_free(&graph);
2234 #endif
2235     av_frame_free(&frame);
2236     return 0;
2237 }
2238
2239 static int subtitle_thread(void *arg)
2240 {
2241     VideoState *is = arg;
2242     Frame *sp;
2243     int got_subtitle;
2244     double pts;
2245
2246     for (;;) {
2247         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2248             return 0;
2249
2250         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2251             break;
2252
2253         pts = 0;
2254
2255         if (got_subtitle && sp->sub.format == 0) {
2256             if (sp->sub.pts != AV_NOPTS_VALUE)
2257                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2258             sp->pts = pts;
2259             sp->serial = is->subdec.pkt_serial;
2260             sp->width = is->subdec.avctx->width;
2261             sp->height = is->subdec.avctx->height;
2262             sp->uploaded = 0;
2263
2264             /* now we can update the picture count */
2265             frame_queue_push(&is->subpq);
2266         } else if (got_subtitle) {
2267             avsubtitle_free(&sp->sub);
2268         }
2269     }
2270     return 0;
2271 }
2272
2273 /* copy samples for viewing in editor window */
2274 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2275 {
2276     int size, len;
2277
2278     size = samples_size / sizeof(short);
2279     while (size > 0) {
2280         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2281         if (len > size)
2282             len = size;
2283         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2284         samples += len;
2285         is->sample_array_index += len;
2286         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2287             is->sample_array_index = 0;
2288         size -= len;
2289     }
2290 }
2291
2292 /* return the wanted number of samples to get better sync if sync_type is video
2293  * or external master clock */
2294 static int synchronize_audio(VideoState *is, int nb_samples)
2295 {
2296     int wanted_nb_samples = nb_samples;
2297
2298     /* if not master, then we try to remove or add samples to correct the clock */
2299     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2300         double diff, avg_diff;
2301         int min_nb_samples, max_nb_samples;
2302
2303         diff = get_clock(&is->audclk) - get_master_clock(is);
2304
2305         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2306             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2307             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2308                 /* not enough measures to have a correct estimate */
2309                 is->audio_diff_avg_count++;
2310             } else {
2311                 /* estimate the A-V difference */
2312                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2313
2314                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2315                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2316                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2317                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2318                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2319                 }
2320                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2321                         diff, avg_diff, wanted_nb_samples - nb_samples,
2322                         is->audio_clock, is->audio_diff_threshold);
2323             }
2324         } else {
2325             /* too big difference : may be initial PTS errors, so
2326                reset A-V filter */
2327             is->audio_diff_avg_count = 0;
2328             is->audio_diff_cum       = 0;
2329         }
2330     }
2331
2332     return wanted_nb_samples;
2333 }
2334
2335 /**
2336  * Decode one audio frame and return its uncompressed size.
2337  *
2338  * The processed audio frame is decoded, converted if required, and
2339  * stored in is->audio_buf, with size in bytes given by the return
2340  * value.
2341  */
2342 static int audio_decode_frame(VideoState *is)
2343 {
2344     int data_size, resampled_data_size;
2345     int64_t dec_channel_layout;
2346     av_unused double audio_clock0;
2347     int wanted_nb_samples;
2348     Frame *af;
2349
2350     if (is->paused)
2351         return -1;
2352
2353     do {
2354 #if defined(_WIN32)
2355         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2356             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2357                 return -1;
2358             av_usleep (1000);
2359         }
2360 #endif
2361         if (!(af = frame_queue_peek_readable(&is->sampq)))
2362             return -1;
2363         frame_queue_next(&is->sampq);
2364     } while (af->serial != is->audioq.serial);
2365
2366     data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
2367                                            af->frame->nb_samples,
2368                                            af->frame->format, 1);
2369
2370     dec_channel_layout =
2371         (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2372         af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
2373     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2374
2375     if (af->frame->format        != is->audio_src.fmt            ||
2376         dec_channel_layout       != is->audio_src.channel_layout ||
2377         af->frame->sample_rate   != is->audio_src.freq           ||
2378         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2379         swr_free(&is->swr_ctx);
2380         is->swr_ctx = swr_alloc_set_opts(NULL,
2381                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2382                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2383                                          0, NULL);
2384         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2385             av_log(NULL, AV_LOG_ERROR,
2386                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2387                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
2388                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2389             swr_free(&is->swr_ctx);
2390             return -1;
2391         }
2392         is->audio_src.channel_layout = dec_channel_layout;
2393         is->audio_src.channels       = af->frame->channels;
2394         is->audio_src.freq = af->frame->sample_rate;
2395         is->audio_src.fmt = af->frame->format;
2396     }
2397
2398     if (is->swr_ctx) {
2399         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2400         uint8_t **out = &is->audio_buf1;
2401         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2402         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2403         int len2;
2404         if (out_size < 0) {
2405             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2406             return -1;
2407         }
2408         if (wanted_nb_samples != af->frame->nb_samples) {
2409             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2410                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2411                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2412                 return -1;
2413             }
2414         }
2415         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2416         if (!is->audio_buf1)
2417             return AVERROR(ENOMEM);
2418         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2419         if (len2 < 0) {
2420             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2421             return -1;
2422         }
2423         if (len2 == out_count) {
2424             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2425             if (swr_init(is->swr_ctx) < 0)
2426                 swr_free(&is->swr_ctx);
2427         }
2428         is->audio_buf = is->audio_buf1;
2429         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2430     } else {
2431         is->audio_buf = af->frame->data[0];
2432         resampled_data_size = data_size;
2433     }
2434
2435     audio_clock0 = is->audio_clock;
2436     /* update the audio clock with the pts */
2437     if (!isnan(af->pts))
2438         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2439     else
2440         is->audio_clock = NAN;
2441     is->audio_clock_serial = af->serial;
2442 #ifdef DEBUG
2443     {
2444         static double last_clock;
2445         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2446                is->audio_clock - last_clock,
2447                is->audio_clock, audio_clock0);
2448         last_clock = is->audio_clock;
2449     }
2450 #endif
2451     return resampled_data_size;
2452 }
2453
2454 /* prepare a new audio buffer */
2455 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2456 {
2457     VideoState *is = opaque;
2458     int audio_size, len1;
2459
2460     audio_callback_time = av_gettime_relative();
2461
2462     while (len > 0) {
2463         if (is->audio_buf_index >= is->audio_buf_size) {
2464            audio_size = audio_decode_frame(is);
2465            if (audio_size < 0) {
2466                 /* if error, just output silence */
2467                is->audio_buf = NULL;
2468                is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2469            } else {
2470                if (is->show_mode != SHOW_MODE_VIDEO)
2471                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2472                is->audio_buf_size = audio_size;
2473            }
2474            is->audio_buf_index = 0;
2475         }
2476         len1 = is->audio_buf_size - is->audio_buf_index;
2477         if (len1 > len)
2478             len1 = len;
2479         if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2480             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2481         else {
2482             memset(stream, 0, len1);
2483             if (!is->muted && is->audio_buf)
2484                 SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
2485         }
2486         len -= len1;
2487         stream += len1;
2488         is->audio_buf_index += len1;
2489     }
2490     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2491     /* Let's assume the audio driver that is used by SDL has two periods. */
2492     if (!isnan(is->audio_clock)) {
2493         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2494         sync_clock_to_slave(&is->extclk, &is->audclk);
2495     }
2496 }
2497
2498 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2499 {
2500     SDL_AudioSpec wanted_spec, spec;
2501     const char *env;
2502     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2503     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2504     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2505
2506     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2507     if (env) {
2508         wanted_nb_channels = atoi(env);
2509         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2510     }
2511     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2512         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2513         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2514     }
2515     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2516     wanted_spec.channels = wanted_nb_channels;
2517     wanted_spec.freq = wanted_sample_rate;
2518     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2519         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2520         return -1;
2521     }
2522     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2523         next_sample_rate_idx--;
2524     wanted_spec.format = AUDIO_S16SYS;
2525     wanted_spec.silence = 0;
2526     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2527     wanted_spec.callback = sdl_audio_callback;
2528     wanted_spec.userdata = opaque;
2529     while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
2530         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2531                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2532         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2533         if (!wanted_spec.channels) {
2534             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2535             wanted_spec.channels = wanted_nb_channels;
2536             if (!wanted_spec.freq) {
2537                 av_log(NULL, AV_LOG_ERROR,
2538                        "No more combinations to try, audio open failed\n");
2539                 return -1;
2540             }
2541         }
2542         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2543     }
2544     if (spec.format != AUDIO_S16SYS) {
2545         av_log(NULL, AV_LOG_ERROR,
2546                "SDL advised audio format %d is not supported!\n", spec.format);
2547         return -1;
2548     }
2549     if (spec.channels != wanted_spec.channels) {
2550         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2551         if (!wanted_channel_layout) {
2552             av_log(NULL, AV_LOG_ERROR,
2553                    "SDL advised channel count %d is not supported!\n", spec.channels);
2554             return -1;
2555         }
2556     }
2557
2558     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2559     audio_hw_params->freq = spec.freq;
2560     audio_hw_params->channel_layout = wanted_channel_layout;
2561     audio_hw_params->channels =  spec.channels;
2562     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2563     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2564     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2565         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2566         return -1;
2567     }
2568     return spec.size;
2569 }
2570
2571 /* open a given stream. Return 0 if OK */
2572 static int stream_component_open(VideoState *is, int stream_index)
2573 {
2574     AVFormatContext *ic = is->ic;
2575     AVCodecContext *avctx;
2576     const AVCodec *codec;
2577     const char *forced_codec_name = NULL;
2578     AVDictionary *opts = NULL;
2579     AVDictionaryEntry *t = NULL;
2580     int sample_rate, nb_channels;
2581     int64_t channel_layout;
2582     int ret = 0;
2583     int stream_lowres = lowres;
2584
2585     if (stream_index < 0 || stream_index >= ic->nb_streams)
2586         return -1;
2587
2588     avctx = avcodec_alloc_context3(NULL);
2589     if (!avctx)
2590         return AVERROR(ENOMEM);
2591
2592     ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2593     if (ret < 0)
2594         goto fail;
2595     avctx->pkt_timebase = ic->streams[stream_index]->time_base;
2596
2597     codec = avcodec_find_decoder(avctx->codec_id);
2598
2599     switch(avctx->codec_type){
2600         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2601         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2602         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2603     }
2604     if (forced_codec_name)
2605         codec = avcodec_find_decoder_by_name(forced_codec_name);
2606     if (!codec) {
2607         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2608                                       "No codec could be found with name '%s'\n", forced_codec_name);
2609         else                   av_log(NULL, AV_LOG_WARNING,
2610                                       "No decoder could be found for codec %s\n", avcodec_get_name(avctx->codec_id));
2611         ret = AVERROR(EINVAL);
2612         goto fail;
2613     }
2614
2615     avctx->codec_id = codec->id;
2616     if (stream_lowres > codec->max_lowres) {
2617         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2618                 codec->max_lowres);
2619         stream_lowres = codec->max_lowres;
2620     }
2621     avctx->lowres = stream_lowres;
2622
2623     if (fast)
2624         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2625
2626     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2627     if (!av_dict_get(opts, "threads", NULL, 0))
2628         av_dict_set(&opts, "threads", "auto", 0);
2629     if (stream_lowres)
2630         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2631     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2632         goto fail;
2633     }
2634     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2635         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2636         ret =  AVERROR_OPTION_NOT_FOUND;
2637         goto fail;
2638     }
2639
2640     is->eof = 0;
2641     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2642     switch (avctx->codec_type) {
2643     case AVMEDIA_TYPE_AUDIO:
2644 #if CONFIG_AVFILTER
2645         {
2646             AVFilterContext *sink;
2647
2648             is->audio_filter_src.freq           = avctx->sample_rate;
2649             is->audio_filter_src.channels       = avctx->channels;
2650             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2651             is->audio_filter_src.fmt            = avctx->sample_fmt;
2652             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2653                 goto fail;
2654             sink = is->out_audio_filter;
2655             sample_rate    = av_buffersink_get_sample_rate(sink);
2656             nb_channels    = av_buffersink_get_channels(sink);
2657             channel_layout = av_buffersink_get_channel_layout(sink);
2658         }
2659 #else
2660         sample_rate    = avctx->sample_rate;
2661         nb_channels    = avctx->channels;
2662         channel_layout = avctx->channel_layout;
2663 #endif
2664
2665         /* prepare audio output */
2666         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2667             goto fail;
2668         is->audio_hw_buf_size = ret;
2669         is->audio_src = is->audio_tgt;
2670         is->audio_buf_size  = 0;
2671         is->audio_buf_index = 0;
2672
2673         /* init averaging filter */
2674         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2675         is->audio_diff_avg_count = 0;
2676         /* since we do not have a precise anough audio FIFO fullness,
2677            we correct audio sync only if larger than this threshold */
2678         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2679
2680         is->audio_stream = stream_index;
2681         is->audio_st = ic->streams[stream_index];
2682
2683         if ((ret = decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread)) < 0)
2684             goto fail;
2685         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2686             is->auddec.start_pts = is->audio_st->start_time;
2687             is->auddec.start_pts_tb = is->audio_st->time_base;
2688         }
2689         if ((ret = decoder_start(&is->auddec, audio_thread, "audio_decoder", is)) < 0)
2690             goto out;
2691         SDL_PauseAudioDevice(audio_dev, 0);
2692         break;
2693     case AVMEDIA_TYPE_VIDEO:
2694         is->video_stream = stream_index;
2695         is->video_st = ic->streams[stream_index];
2696
2697         if ((ret = decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread)) < 0)
2698             goto fail;
2699         if ((ret = decoder_start(&is->viddec, video_thread, "video_decoder", is)) < 0)
2700             goto out;
2701         is->queue_attachments_req = 1;
2702         break;
2703     case AVMEDIA_TYPE_SUBTITLE:
2704         is->subtitle_stream = stream_index;
2705         is->subtitle_st = ic->streams[stream_index];
2706
2707         if ((ret = decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread)) < 0)
2708             goto fail;
2709         if ((ret = decoder_start(&is->subdec, subtitle_thread, "subtitle_decoder", is)) < 0)
2710             goto out;
2711         break;
2712     default:
2713         break;
2714     }
2715     goto out;
2716
2717 fail:
2718     avcodec_free_context(&avctx);
2719 out:
2720     av_dict_free(&opts);
2721
2722     return ret;
2723 }
2724
2725 static int decode_interrupt_cb(void *ctx)
2726 {
2727     VideoState *is = ctx;
2728     return is->abort_request;
2729 }
2730
2731 static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2732     return stream_id < 0 ||
2733            queue->abort_request ||
2734            (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2735            queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2736 }
2737
2738 static int is_realtime(AVFormatContext *s)
2739 {
2740     if(   !strcmp(s->iformat->name, "rtp")
2741        || !strcmp(s->iformat->name, "rtsp")
2742        || !strcmp(s->iformat->name, "sdp")
2743     )
2744         return 1;
2745
2746     if(s->pb && (   !strncmp(s->url, "rtp:", 4)
2747                  || !strncmp(s->url, "udp:", 4)
2748                 )
2749     )
2750         return 1;
2751     return 0;
2752 }
2753
2754 /* this thread gets the stream from the disk or the network */
2755 static int read_thread(void *arg)
2756 {
2757     VideoState *is = arg;
2758     AVFormatContext *ic = NULL;
2759     int err, i, ret;
2760     int st_index[AVMEDIA_TYPE_NB];
2761     AVPacket *pkt = NULL;
2762     int64_t stream_start_time;
2763     int pkt_in_play_range = 0;
2764     AVDictionaryEntry *t;
2765     SDL_mutex *wait_mutex = SDL_CreateMutex();
2766     int scan_all_pmts_set = 0;
2767     int64_t pkt_ts;
2768
2769     if (!wait_mutex) {
2770         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2771         ret = AVERROR(ENOMEM);
2772         goto fail;
2773     }
2774
2775     memset(st_index, -1, sizeof(st_index));
2776     is->eof = 0;
2777
2778     pkt = av_packet_alloc();
2779     if (!pkt) {
2780         av_log(NULL, AV_LOG_FATAL, "Could not allocate packet.\n");
2781         ret = AVERROR(ENOMEM);
2782         goto fail;
2783     }
2784     ic = avformat_alloc_context();
2785     if (!ic) {
2786         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2787         ret = AVERROR(ENOMEM);
2788         goto fail;
2789     }
2790     ic->interrupt_callback.callback = decode_interrupt_cb;
2791     ic->interrupt_callback.opaque = is;
2792     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2793         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2794         scan_all_pmts_set = 1;
2795     }
2796     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2797     if (err < 0) {
2798         print_error(is->filename, err);
2799         ret = -1;
2800         goto fail;
2801     }
2802     if (scan_all_pmts_set)
2803         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2804
2805     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2806         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2807         ret = AVERROR_OPTION_NOT_FOUND;
2808         goto fail;
2809     }
2810     is->ic = ic;
2811
2812     if (genpts)
2813         ic->flags |= AVFMT_FLAG_GENPTS;
2814
2815     av_format_inject_global_side_data(ic);
2816
2817     if (find_stream_info) {
2818         AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
2819         int orig_nb_streams = ic->nb_streams;
2820
2821         err = avformat_find_stream_info(ic, opts);
2822
2823         for (i = 0; i < orig_nb_streams; i++)
2824             av_dict_free(&opts[i]);
2825         av_freep(&opts);
2826
2827         if (err < 0) {
2828             av_log(NULL, AV_LOG_WARNING,
2829                    "%s: could not find codec parameters\n", is->filename);
2830             ret = -1;
2831             goto fail;
2832         }
2833     }
2834
2835     if (ic->pb)
2836         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2837
2838     if (seek_by_bytes < 0)
2839         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2840
2841     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2842
2843     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2844         window_title = av_asprintf("%s - %s", t->value, input_filename);
2845
2846     /* if seeking requested, we execute it */
2847     if (start_time != AV_NOPTS_VALUE) {
2848         int64_t timestamp;
2849
2850         timestamp = start_time;
2851         /* add the stream start time */
2852         if (ic->start_time != AV_NOPTS_VALUE)
2853             timestamp += ic->start_time;
2854         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2855         if (ret < 0) {
2856             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2857                     is->filename, (double)timestamp / AV_TIME_BASE);
2858         }
2859     }
2860
2861     is->realtime = is_realtime(ic);
2862
2863     if (show_status)
2864         av_dump_format(ic, 0, is->filename, 0);
2865
2866     for (i = 0; i < ic->nb_streams; i++) {
2867         AVStream *st = ic->streams[i];
2868         enum AVMediaType type = st->codecpar->codec_type;
2869         st->discard = AVDISCARD_ALL;
2870         if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2871             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2872                 st_index[type] = i;
2873     }
2874     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2875         if (wanted_stream_spec[i] && st_index[i] == -1) {
2876             av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
2877             st_index[i] = INT_MAX;
2878         }
2879     }
2880
2881     if (!video_disable)
2882         st_index[AVMEDIA_TYPE_VIDEO] =
2883             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2884                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2885     if (!audio_disable)
2886         st_index[AVMEDIA_TYPE_AUDIO] =
2887             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2888                                 st_index[AVMEDIA_TYPE_AUDIO],
2889                                 st_index[AVMEDIA_TYPE_VIDEO],
2890                                 NULL, 0);
2891     if (!video_disable && !subtitle_disable)
2892         st_index[AVMEDIA_TYPE_SUBTITLE] =
2893             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2894                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2895                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2896                                  st_index[AVMEDIA_TYPE_AUDIO] :
2897                                  st_index[AVMEDIA_TYPE_VIDEO]),
2898                                 NULL, 0);
2899
2900     is->show_mode = show_mode;
2901     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2902         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2903         AVCodecParameters *codecpar = st->codecpar;
2904         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2905         if (codecpar->width)
2906             set_default_window_size(codecpar->width, codecpar->height, sar);
2907     }
2908
2909     /* open the streams */
2910     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2911         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2912     }
2913
2914     ret = -1;
2915     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2916         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2917     }
2918     if (is->show_mode == SHOW_MODE_NONE)
2919         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2920
2921     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2922         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2923     }
2924
2925     if (is->video_stream < 0 && is->audio_stream < 0) {
2926         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2927                is->filename);
2928         ret = -1;
2929         goto fail;
2930     }
2931
2932     if (infinite_buffer < 0 && is->realtime)
2933         infinite_buffer = 1;
2934
2935     for (;;) {
2936         if (is->abort_request)
2937             break;
2938         if (is->paused != is->last_paused) {
2939             is->last_paused = is->paused;
2940             if (is->paused)
2941                 is->read_pause_return = av_read_pause(ic);
2942             else
2943                 av_read_play(ic);
2944         }
2945 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2946         if (is->paused &&
2947                 (!strcmp(ic->iformat->name, "rtsp") ||
2948                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2949             /* wait 10 ms to avoid trying to get another packet */
2950             /* XXX: horrible */
2951             SDL_Delay(10);
2952             continue;
2953         }
2954 #endif
2955         if (is->seek_req) {
2956             int64_t seek_target = is->seek_pos;
2957             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2958             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2959 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2960 //      of the seek_pos/seek_rel variables
2961
2962             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2963             if (ret < 0) {
2964                 av_log(NULL, AV_LOG_ERROR,
2965                        "%s: error while seeking\n", is->ic->url);
2966             } else {
2967                 if (is->audio_stream >= 0)
2968                     packet_queue_flush(&is->audioq);
2969                 if (is->subtitle_stream >= 0)
2970                     packet_queue_flush(&is->subtitleq);
2971                 if (is->video_stream >= 0)
2972                     packet_queue_flush(&is->videoq);
2973                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2974                    set_clock(&is->extclk, NAN, 0);
2975                 } else {
2976                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2977                 }
2978             }
2979             is->seek_req = 0;
2980             is->queue_attachments_req = 1;
2981             is->eof = 0;
2982             if (is->paused)
2983                 step_to_next_frame(is);
2984         }
2985         if (is->queue_attachments_req) {
2986             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2987                 if ((ret = av_packet_ref(pkt, &is->video_st->attached_pic)) < 0)
2988                     goto fail;
2989                 packet_queue_put(&is->videoq, pkt);
2990                 packet_queue_put_nullpacket(&is->videoq, pkt, is->video_stream);
2991             }
2992             is->queue_attachments_req = 0;
2993         }
2994
2995         /* if the queue are full, no need to read more */
2996         if (infinite_buffer<1 &&
2997               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2998             || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
2999                 stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
3000                 stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
3001             /* wait 10 ms */
3002             SDL_LockMutex(wait_mutex);
3003             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3004             SDL_UnlockMutex(wait_mutex);
3005             continue;
3006         }
3007         if (!is->paused &&
3008             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
3009             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3010             if (loop != 1 && (!loop || --loop)) {
3011                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3012             } else if (autoexit) {
3013                 ret = AVERROR_EOF;
3014                 goto fail;
3015             }
3016         }
3017         ret = av_read_frame(ic, pkt);
3018         if (ret < 0) {
3019             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
3020                 if (is->video_stream >= 0)
3021                     packet_queue_put_nullpacket(&is->videoq, pkt, is->video_stream);
3022                 if (is->audio_stream >= 0)
3023                     packet_queue_put_nullpacket(&is->audioq, pkt, is->audio_stream);
3024                 if (is->subtitle_stream >= 0)
3025                     packet_queue_put_nullpacket(&is->subtitleq, pkt, is->subtitle_stream);
3026                 is->eof = 1;
3027             }
3028             if (ic->pb && ic->pb->error) {
3029                 if (autoexit)
3030                     goto fail;
3031                 else
3032                     break;
3033             }
3034             SDL_LockMutex(wait_mutex);
3035             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3036             SDL_UnlockMutex(wait_mutex);
3037             continue;
3038         } else {
3039             is->eof = 0;
3040         }
3041         /* check if packet is in play range specified by user, then queue, otherwise discard */
3042         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3043         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3044         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3045                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3046                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3047                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3048                 <= ((double)duration / 1000000);
3049         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3050             packet_queue_put(&is->audioq, pkt);
3051         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3052                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3053             packet_queue_put(&is->videoq, pkt);
3054         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3055             packet_queue_put(&is->subtitleq, pkt);
3056         } else {
3057             av_packet_unref(pkt);
3058         }
3059     }
3060
3061     ret = 0;
3062  fail:
3063     if (ic && !is->ic)
3064         avformat_close_input(&ic);
3065
3066     av_packet_free(&pkt);
3067     if (ret != 0) {
3068         SDL_Event event;
3069
3070         event.type = FF_QUIT_EVENT;
3071         event.user.data1 = is;
3072         SDL_PushEvent(&event);
3073     }
3074     SDL_DestroyMutex(wait_mutex);
3075     return 0;
3076 }
3077
3078 static VideoState *stream_open(const char *filename,
3079                                const AVInputFormat *iformat)
3080 {
3081     VideoState *is;
3082
3083     is = av_mallocz(sizeof(VideoState));
3084     if (!is)
3085         return NULL;
3086     is->last_video_stream = is->video_stream = -1;
3087     is->last_audio_stream = is->audio_stream = -1;
3088     is->last_subtitle_stream = is->subtitle_stream = -1;
3089     is->filename = av_strdup(filename);
3090     if (!is->filename)
3091         goto fail;
3092     is->iformat = iformat;
3093     is->ytop    = 0;
3094     is->xleft   = 0;
3095
3096     /* start video display */
3097     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3098         goto fail;
3099     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3100         goto fail;
3101     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3102         goto fail;
3103
3104     if (packet_queue_init(&is->videoq) < 0 ||
3105         packet_queue_init(&is->audioq) < 0 ||
3106         packet_queue_init(&is->subtitleq) < 0)
3107         goto fail;
3108
3109     if (!(is->continue_read_thread = SDL_CreateCond())) {
3110         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3111         goto fail;
3112     }
3113
3114     init_clock(&is->vidclk, &is->videoq.serial);
3115     init_clock(&is->audclk, &is->audioq.serial);
3116     init_clock(&is->extclk, &is->extclk.serial);
3117     is->audio_clock_serial = -1;
3118     if (startup_volume < 0)
3119         av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
3120     if (startup_volume > 100)
3121         av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
3122     startup_volume = av_clip(startup_volume, 0, 100);
3123     startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
3124     is->audio_volume = startup_volume;
3125     is->muted = 0;
3126     is->av_sync_type = av_sync_type;
3127     is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
3128     if (!is->read_tid) {
3129         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3130 fail:
3131         stream_close(is);
3132         return NULL;
3133     }
3134     return is;
3135 }
3136
3137 static void stream_cycle_channel(VideoState *is, int codec_type)
3138 {
3139     AVFormatContext *ic = is->ic;
3140     int start_index, stream_index;
3141     int old_index;
3142     AVStream *st;
3143     AVProgram *p = NULL;
3144     int nb_streams = is->ic->nb_streams;
3145
3146     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3147         start_index = is->last_video_stream;
3148         old_index = is->video_stream;
3149     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3150         start_index = is->last_audio_stream;
3151         old_index = is->audio_stream;
3152     } else {
3153         start_index = is->last_subtitle_stream;
3154         old_index = is->subtitle_stream;
3155     }
3156     stream_index = start_index;
3157
3158     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3159         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3160         if (p) {
3161             nb_streams = p->nb_stream_indexes;
3162             for (start_index = 0; start_index < nb_streams; start_index++)
3163                 if (p->stream_index[start_index] == stream_index)
3164                     break;
3165             if (start_index == nb_streams)
3166                 start_index = -1;
3167             stream_index = start_index;
3168         }
3169     }
3170
3171     for (;;) {
3172         if (++stream_index >= nb_streams)
3173         {
3174             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3175             {
3176                 stream_index = -1;
3177                 is->last_subtitle_stream = -1;
3178                 goto the_end;
3179             }
3180             if (start_index == -1)
3181                 return;
3182             stream_index = 0;
3183         }
3184         if (stream_index == start_index)
3185             return;
3186         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3187         if (st->codecpar->codec_type == codec_type) {
3188             /* check that parameters are OK */
3189             switch (codec_type) {
3190             case AVMEDIA_TYPE_AUDIO:
3191                 if (st->codecpar->sample_rate != 0 &&
3192                     st->codecpar->channels != 0)
3193                     goto the_end;
3194                 break;
3195             case AVMEDIA_TYPE_VIDEO:
3196             case AVMEDIA_TYPE_SUBTITLE:
3197                 goto the_end;
3198             default:
3199                 break;
3200             }
3201         }
3202     }
3203  the_end:
3204     if (p && stream_index != -1)
3205         stream_index = p->stream_index[stream_index];
3206     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3207            av_get_media_type_string(codec_type),
3208            old_index,
3209            stream_index);
3210
3211     stream_component_close(is, old_index);
3212     stream_component_open(is, stream_index);
3213 }
3214
3215
3216 static void toggle_full_screen(VideoState *is)
3217 {
3218     is_full_screen = !is_full_screen;
3219     SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
3220 }
3221
3222 static void toggle_audio_display(VideoState *is)
3223 {
3224     int next = is->show_mode;
3225     do {
3226         next = (next + 1) % SHOW_MODE_NB;
3227     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3228     if (is->show_mode != next) {
3229         is->force_refresh = 1;
3230         is->show_mode = next;
3231     }
3232 }
3233
3234 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3235     double remaining_time = 0.0;
3236     SDL_PumpEvents();
3237     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
3238         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3239             SDL_ShowCursor(0);
3240             cursor_hidden = 1;
3241         }
3242         if (remaining_time > 0.0)
3243             av_usleep((int64_t)(remaining_time * 1000000.0));
3244         remaining_time = REFRESH_RATE;
3245         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3246             video_refresh(is, &remaining_time);
3247         SDL_PumpEvents();
3248     }
3249 }
3250
3251 static void seek_chapter(VideoState *is, int incr)
3252 {
3253     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3254     int i;
3255
3256     if (!is->ic->nb_chapters)
3257         return;
3258
3259     /* find the current chapter */
3260     for (i = 0; i < is->ic->nb_chapters; i++) {
3261         AVChapter *ch = is->ic->chapters[i];
3262         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3263             i--;
3264             break;
3265         }
3266     }
3267
3268     i += incr;
3269     i = FFMAX(i, 0);
3270     if (i >= is->ic->nb_chapters)
3271         return;
3272
3273     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3274     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3275                                  AV_TIME_BASE_Q), 0, 0);
3276 }
3277
3278 /* handle an event sent by the GUI */
3279 static void event_loop(VideoState *cur_stream)
3280 {
3281     SDL_Event event;
3282     double incr, pos, frac;
3283
3284     for (;;) {
3285         double x;
3286         refresh_loop_wait_event(cur_stream, &event);
3287         switch (event.type) {
3288         case SDL_KEYDOWN:
3289             if (exit_on_keydown || event.key.keysym.sym == SDLK_ESCAPE || event.key.keysym.sym == SDLK_q) {
3290                 do_exit(cur_stream);
3291                 break;
3292             }
3293             // If we don't yet have a window, skip all key events, because read_thread might still be initializing...
3294             if (!cur_stream->width)
3295                 continue;
3296             switch (event.key.keysym.sym) {
3297             case SDLK_f:
3298                 toggle_full_screen(cur_stream);
3299                 cur_stream->force_refresh = 1;
3300                 break;
3301             case SDLK_p:
3302             case SDLK_SPACE:
3303                 toggle_pause(cur_stream);
3304                 break;
3305             case SDLK_m:
3306                 toggle_mute(cur_stream);
3307                 break;
3308             case SDLK_KP_MULTIPLY:
3309             case SDLK_0:
3310                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3311                 break;
3312             case SDLK_KP_DIVIDE:
3313             case SDLK_9:
3314                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3315                 break;
3316             case SDLK_s: // S: Step to next frame
3317                 step_to_next_frame(cur_stream);
3318                 break;
3319             case SDLK_a:
3320                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3321                 break;
3322             case SDLK_v:
3323                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3324                 break;
3325             case SDLK_c:
3326                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3327                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3328                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3329                 break;
3330             case SDLK_t:
3331                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3332                 break;
3333             case SDLK_w:
3334 #if CONFIG_AVFILTER
3335                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3336                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3337                         cur_stream->vfilter_idx = 0;
3338                 } else {
3339                     cur_stream->vfilter_idx = 0;
3340                     toggle_audio_display(cur_stream);
3341                 }
3342 #else
3343                 toggle_audio_display(cur_stream);
3344 #endif
3345                 break;
3346             case SDLK_PAGEUP:
3347                 if (cur_stream->ic->nb_chapters <= 1) {
3348                     incr = 600.0;
3349                     goto do_seek;
3350                 }
3351                 seek_chapter(cur_stream, 1);
3352                 break;
3353             case SDLK_PAGEDOWN:
3354                 if (cur_stream->ic->nb_chapters <= 1) {
3355                     incr = -600.0;
3356                     goto do_seek;
3357                 }
3358                 seek_chapter(cur_stream, -1);
3359                 break;
3360             case SDLK_LEFT:
3361                 incr = seek_interval ? -seek_interval : -10.0;
3362                 goto do_seek;
3363             case SDLK_RIGHT:
3364                 incr = seek_interval ? seek_interval : 10.0;
3365                 goto do_seek;
3366             case SDLK_UP:
3367                 incr = 60.0;
3368                 goto do_seek;
3369             case SDLK_DOWN:
3370                 incr = -60.0;
3371             do_seek:
3372                     if (seek_by_bytes) {
3373                         pos = -1;
3374                         if (pos < 0 && cur_stream->video_stream >= 0)
3375                             pos = frame_queue_last_pos(&cur_stream->pictq);
3376                         if (pos < 0 && cur_stream->audio_stream >= 0)
3377                             pos = frame_queue_last_pos(&cur_stream->sampq);
3378                         if (pos < 0)
3379                             pos = avio_tell(cur_stream->ic->pb);
3380                         if (cur_stream->ic->bit_rate)
3381                             incr *= cur_stream->ic->bit_rate / 8.0;
3382                         else
3383                             incr *= 180000.0;
3384                         pos += incr;
3385                         stream_seek(cur_stream, pos, incr, 1);
3386                     } else {
3387                         pos = get_master_clock(cur_stream);
3388                         if (isnan(pos))
3389                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3390                         pos += incr;
3391                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3392                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3393                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3394                     }
3395                 break;
3396             default:
3397                 break;
3398             }
3399             break;
3400         case SDL_MOUSEBUTTONDOWN:
3401             if (exit_on_mousedown) {
3402                 do_exit(cur_stream);
3403                 break;
3404             }
3405             if (event.button.button == SDL_BUTTON_LEFT) {
3406                 static int64_t last_mouse_left_click = 0;
3407                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3408                     toggle_full_screen(cur_stream);
3409                     cur_stream->force_refresh = 1;
3410                     last_mouse_left_click = 0;
3411                 } else {
3412                     last_mouse_left_click = av_gettime_relative();
3413                 }
3414             }
3415         case SDL_MOUSEMOTION:
3416             if (cursor_hidden) {
3417                 SDL_ShowCursor(1);
3418                 cursor_hidden = 0;
3419             }
3420             cursor_last_shown = av_gettime_relative();
3421             if (event.type == SDL_MOUSEBUTTONDOWN) {
3422                 if (event.button.button != SDL_BUTTON_RIGHT)
3423                     break;
3424                 x = event.button.x;
3425             } else {
3426                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3427                     break;
3428                 x = event.motion.x;
3429             }
3430                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3431                     uint64_t size =  avio_size(cur_stream->ic->pb);
3432                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3433                 } else {
3434                     int64_t ts;
3435                     int ns, hh, mm, ss;
3436                     int tns, thh, tmm, tss;
3437                     tns  = cur_stream->ic->duration / 1000000LL;
3438                     thh  = tns / 3600;
3439                     tmm  = (tns % 3600) / 60;
3440                     tss  = (tns % 60);
3441                     frac = x / cur_stream->width;
3442                     ns   = frac * tns;
3443                     hh   = ns / 3600;
3444                     mm   = (ns % 3600) / 60;
3445                     ss   = (ns % 60);
3446                     av_log(NULL, AV_LOG_INFO,
3447                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3448                             hh, mm, ss, thh, tmm, tss);
3449                     ts = frac * cur_stream->ic->duration;
3450                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3451                         ts += cur_stream->ic->start_time;
3452                     stream_seek(cur_stream, ts, 0, 0);
3453                 }
3454             break;
3455         case SDL_WINDOWEVENT:
3456             switch (event.window.event) {
3457                 case SDL_WINDOWEVENT_SIZE_CHANGED:
3458                     screen_width  = cur_stream->width  = event.window.data1;
3459                     screen_height = cur_stream->height = event.window.data2;
3460                     if (cur_stream->vis_texture) {
3461                         SDL_DestroyTexture(cur_stream->vis_texture);
3462                         cur_stream->vis_texture = NULL;
3463                     }
3464                 case SDL_WINDOWEVENT_EXPOSED:
3465                     cur_stream->force_refresh = 1;
3466             }
3467             break;
3468         case SDL_QUIT:
3469         case FF_QUIT_EVENT:
3470             do_exit(cur_stream);
3471             break;
3472         default:
3473             break;
3474         }
3475     }
3476 }
3477
3478 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3479 {
3480     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3481     return opt_default(NULL, "video_size", arg);
3482 }
3483
3484 static int opt_width(void *optctx, const char *opt, const char *arg)
3485 {
3486     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3487     return 0;
3488 }
3489
3490 static int opt_height(void *optctx, const char *opt, const char *arg)
3491 {
3492     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3493     return 0;
3494 }
3495
3496 static int opt_format(void *optctx, const char *opt, const char *arg)
3497 {
3498     file_iformat = av_find_input_format(arg);
3499     if (!file_iformat) {
3500         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3501         return AVERROR(EINVAL);
3502     }
3503     return 0;
3504 }
3505
3506 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3507 {
3508     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3509     return opt_default(NULL, "pixel_format", arg);
3510 }
3511
3512 static int opt_sync(void *optctx, const char *opt, const char *arg)
3513 {
3514     if (!strcmp(arg, "audio"))
3515         av_sync_type = AV_SYNC_AUDIO_MASTER;
3516     else if (!strcmp(arg, "video"))
3517         av_sync_type = AV_SYNC_VIDEO_MASTER;
3518     else if (!strcmp(arg, "ext"))
3519         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3520     else {
3521         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3522         exit(1);
3523     }
3524     return 0;
3525 }
3526
3527 static int opt_seek(void *optctx, const char *opt, const char *arg)
3528 {
3529     start_time = parse_time_or_die(opt, arg, 1);
3530     return 0;
3531 }
3532
3533 static int opt_duration(void *optctx, const char *opt, const char *arg)
3534 {
3535     duration = parse_time_or_die(opt, arg, 1);
3536     return 0;
3537 }
3538
3539 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3540 {
3541     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3542                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3543                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3544                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3545     return 0;
3546 }
3547
3548 static void opt_input_file(void *optctx, const char *filename)
3549 {
3550     if (input_filename) {
3551         av_log(NULL, AV_LOG_FATAL,
3552                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3553                 filename, input_filename);
3554         exit(1);
3555     }
3556     if (!strcmp(filename, "-"))
3557         filename = "pipe:";
3558     input_filename = filename;
3559 }
3560
3561 static int opt_codec(void *optctx, const char *opt, const char *arg)
3562 {
3563    const char *spec = strchr(opt, ':');
3564    if (!spec) {
3565        av_log(NULL, AV_LOG_ERROR,
3566               "No media specifier was specified in '%s' in option '%s'\n",
3567                arg, opt);
3568        return AVERROR(EINVAL);
3569    }
3570    spec++;
3571    switch (spec[0]) {
3572    case 'a' :    audio_codec_name = arg; break;
3573    case 's' : subtitle_codec_name = arg; break;
3574    case 'v' :    video_codec_name = arg; break;
3575    default:
3576        av_log(NULL, AV_LOG_ERROR,
3577               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3578        return AVERROR(EINVAL);
3579    }
3580    return 0;
3581 }
3582
3583 static int dummy;
3584
3585 static const OptionDef options[] = {
3586     CMDUTILS_COMMON_OPTIONS
3587     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3588     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3589     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3590     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3591     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3592     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3593     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3594     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3595     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3596     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3597     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3598     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3599     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3600     { "seek_interval", OPT_FLOAT | HAS_ARG, { &seek_interval }, "set seek interval for left/right keys, in seconds", "seconds" },
3601     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3602     { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
3603     { "alwaysontop", OPT_BOOL, { &alwaysontop }, "window always on top" },
3604     { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
3605     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3606     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3607     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3608     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3609     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3610     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3611     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3612     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3613     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3614     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3615     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3616     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3617     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3618     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3619     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3620     { "left", OPT_INT | HAS_ARG | OPT_EXPERT, { &screen_left }, "set the x position for the left of the window", "x pos" },
3621     { "top", OPT_INT | HAS_ARG | OPT_EXPERT, { &screen_top }, "set the y position for the top of the window", "y pos" },
3622 #if CONFIG_AVFILTER
3623     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3624     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3625 #endif
3626     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3627     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3628     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3629     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3630     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3631     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3632     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3633     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3634     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3635     { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
3636         "read and decode the streams to fill missing information with heuristics" },
3637     { "filter_threads", HAS_ARG | OPT_INT | OPT_EXPERT, { &filter_nbthreads }, "number of filter threads per graph" },
3638     { NULL, },
3639 };
3640
3641 static void show_usage(void)
3642 {
3643     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3644     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3645     av_log(NULL, AV_LOG_INFO, "\n");
3646 }
3647
3648 void show_help_default(const char *opt, const char *arg)
3649 {
3650     av_log_set_callback(log_callback_help);
3651     show_usage();
3652     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3653     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3654     printf("\n");
3655     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3656     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3657 #if !CONFIG_AVFILTER
3658     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3659 #else
3660     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3661 #endif
3662     printf("\nWhile playing:\n"
3663            "q, ESC              quit\n"
3664            "f                   toggle full screen\n"
3665            "p, SPC              pause\n"
3666            "m                   toggle mute\n"
3667            "9, 0                decrease and increase volume respectively\n"
3668            "/, *                decrease and increase volume respectively\n"
3669            "a                   cycle audio channel in the current program\n"
3670            "v                   cycle video channel\n"
3671            "t                   cycle subtitle channel in the current program\n"
3672            "c                   cycle program\n"
3673            "w                   cycle video filters or show modes\n"
3674            "s                   activate frame-step mode\n"
3675            "left/right          seek backward/forward 10 seconds or to custom interval if -seek_interval is set\n"
3676            "down/up             seek backward/forward 1 minute\n"
3677            "page down/page up   seek backward/forward 10 minutes\n"
3678            "right mouse click   seek to percentage in file corresponding to fraction of width\n"
3679            "left double-click   toggle full screen\n"
3680            );
3681 }
3682
3683 /* Called from the main */
3684 int main(int argc, char **argv)
3685 {
3686     int flags;
3687     VideoState *is;
3688
3689     init_dynload();
3690
3691     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3692     parse_loglevel(argc, argv, options);
3693
3694     /* register all codecs, demux and protocols */
3695 #if CONFIG_AVDEVICE
3696     avdevice_register_all();
3697 #endif
3698     avformat_network_init();
3699
3700     init_opts();
3701
3702     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3703     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3704
3705     show_banner(argc, argv, options);
3706
3707     parse_options(NULL, argc, argv, options, opt_input_file);
3708
3709     if (!input_filename) {
3710         show_usage();
3711         av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
3712         av_log(NULL, AV_LOG_FATAL,
3713                "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3714         exit(1);
3715     }
3716
3717     if (display_disable) {
3718         video_disable = 1;
3719     }
3720     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3721     if (audio_disable)
3722         flags &= ~SDL_INIT_AUDIO;
3723     else {
3724         /* Try to work around an occasional ALSA buffer underflow issue when the
3725          * period size is NPOT due to ALSA resampling by forcing the buffer size. */
3726         if (!SDL_getenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE"))
3727             SDL_setenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE","1", 1);
3728     }
3729     if (display_disable)
3730         flags &= ~SDL_INIT_VIDEO;
3731     if (SDL_Init (flags)) {
3732         av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
3733         av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
3734         exit(1);
3735     }
3736
3737     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3738     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3739
3740     if (!display_disable) {
3741         int flags = SDL_WINDOW_HIDDEN;
3742         if (alwaysontop)
3743 #if SDL_VERSION_ATLEAST(2,0,5)
3744             flags |= SDL_WINDOW_ALWAYS_ON_TOP;
3745 #else
3746             av_log(NULL, AV_LOG_WARNING, "Your SDL version doesn't support SDL_WINDOW_ALWAYS_ON_TOP. Feature will be inactive.\n");
3747 #endif
3748         if (borderless)
3749             flags |= SDL_WINDOW_BORDERLESS;
3750         else
3751             flags |= SDL_WINDOW_RESIZABLE;
3752         window = SDL_CreateWindow(program_name, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, default_width, default_height, flags);
3753         SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
3754         if (window) {
3755             renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
3756             if (!renderer) {
3757                 av_log(NULL, AV_LOG_WARNING, "Failed to initialize a hardware accelerated renderer: %s\n", SDL_GetError());
3758                 renderer = SDL_CreateRenderer(window, -1, 0);
3759             }
3760             if (renderer) {
3761                 if (!SDL_GetRendererInfo(renderer, &renderer_info))
3762                     av_log(NULL, AV_LOG_VERBOSE, "Initialized %s renderer.\n", renderer_info.name);
3763             }
3764         }
3765         if (!window || !renderer || !renderer_info.num_texture_formats) {
3766             av_log(NULL, AV_LOG_FATAL, "Failed to create window or renderer: %s", SDL_GetError());
3767             do_exit(NULL);
3768         }
3769     }
3770
3771     is = stream_open(input_filename, file_iformat);
3772     if (!is) {
3773         av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
3774         do_exit(NULL);
3775     }
3776
3777     event_loop(is);
3778
3779     /* never returns */
3780
3781     return 0;
3782 }