git.sesse.net Git - ffmpeg/blob - 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 "libavutil/avstring.h"
  32 #include "libavutil/colorspace.h"
  33 #include "libavutil/mathematics.h"
  34 #include "libavutil/pixdesc.h"
  35 #include "libavutil/imgutils.h"
  36 #include "libavutil/dict.h"
  37 #include "libavutil/parseutils.h"
  38 #include "libavutil/samplefmt.h"
  39 #include "libavutil/avassert.h"
  40 #include "libavutil/time.h"
  41 #include "libavformat/avformat.h"
  42 #include "libavdevice/avdevice.h"
  43 #include "libswscale/swscale.h"
  44 #include "libavutil/opt.h"
  45 #include "libavcodec/avfft.h"
  46 #include "libswresample/swresample.h"
  47
  48 #if CONFIG_AVFILTER
  49 # include "libavfilter/avcodec.h"
  50 # include "libavfilter/avfilter.h"
  51 # include "libavfilter/avfiltergraph.h"
  52 # include "libavfilter/buffersink.h"
  53 # include "libavfilter/buffersrc.h"
  54 #endif
  55
  56 #include <SDL.h>
  57 #include <SDL_thread.h>
  58
  59 #include "cmdutils.h"
  60
  61 #include <assert.h>
  62
  63 const char program_name[] = "ffplay";
  64 const int program_birth_year = 2003;
  65
  66 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
  67 #define MIN_FRAMES 5
  68
  69 /* SDL audio buffer size, in samples. Should be small to have precise
  70    A/V sync as SDL does not have hardware buffer fullness info. */
  71 #define SDL_AUDIO_BUFFER_SIZE 1024
  72
  73 /* no AV sync correction is done if below the AV sync threshold */
  74 #define AV_SYNC_THRESHOLD 0.01
  75 /* no AV correction is done if too big error */
  76 #define AV_NOSYNC_THRESHOLD 10.0
  77
  78 /* maximum audio speed change to get correct sync */
  79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  80
  81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  82 #define AUDIO_DIFF_AVG_NB   20
  83
  84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
  85 #define SAMPLE_ARRAY_SIZE (2 * 65536)
  86
  87 static int sws_flags = SWS_BICUBIC;
  88
  89 typedef struct PacketQueue {
  90     AVPacketList *first_pkt, *last_pkt;
  91     int nb_packets;
  92     int size;
  93     int abort_request;
  94     SDL_mutex *mutex;
  95     SDL_cond *cond;
  96 } PacketQueue;
  97
  98 #define VIDEO_PICTURE_QUEUE_SIZE 2
  99 #define SUBPICTURE_QUEUE_SIZE 4
 100
 101 typedef struct VideoPicture {
 102     double pts;                                  ///< presentation time stamp for this picture
 103     int64_t pos;                                 ///< byte position in file
 104     int skip;
 105     SDL_Overlay *bmp;
 106     int width, height; /* source height & width */
 107     AVRational sample_aspect_ratio;
 108     int allocated;
 109     int reallocate;
 110
 111 #if CONFIG_AVFILTER
 112     AVFilterBufferRef *picref;
 113 #endif
 114 } VideoPicture;
 115
 116 typedef struct SubPicture {
 117     double pts; /* presentation time stamp for this picture */
 118     AVSubtitle sub;
 119 } SubPicture;
 120
 121 typedef struct AudioParams {
 122     int freq;
 123     int channels;
 124     int channel_layout;
 125     enum AVSampleFormat fmt;
 126 } AudioParams;
 127
 128 enum {
 129     AV_SYNC_AUDIO_MASTER, /* default choice */
 130     AV_SYNC_VIDEO_MASTER,
 131     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 132 };
 133
 134 typedef struct VideoState {
 135     SDL_Thread *read_tid;
 136     SDL_Thread *video_tid;
 137     SDL_Thread *refresh_tid;
 138     AVInputFormat *iformat;
 139     int no_background;
 140     int abort_request;
 141     int force_refresh;
 142     int paused;
 143     int last_paused;
 144     int seek_req;
 145     int seek_flags;
 146     int64_t seek_pos;
 147     int64_t seek_rel;
 148     int read_pause_return;
 149     AVFormatContext *ic;
 150
 151     int audio_stream;
 152
 153     int av_sync_type;
 154     double external_clock; /* external clock base */
 155     int64_t external_clock_time;
 156
 157     double audio_clock;
 158     double audio_diff_cum; /* used for AV difference average computation */
 159     double audio_diff_avg_coef;
 160     double audio_diff_threshold;
 161     int audio_diff_avg_count;
 162     AVStream *audio_st;
 163     PacketQueue audioq;
 164     int audio_hw_buf_size;
 165     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[AVCODEC_MAX_AUDIO_FRAME_SIZE * 4];
 166     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
 167     uint8_t *audio_buf;
 168     uint8_t *audio_buf1;
 169     unsigned int audio_buf_size; /* in bytes */
 170     int audio_buf_index; /* in bytes */
 171     int audio_write_buf_size;
 172     AVPacket audio_pkt_temp;
 173     AVPacket audio_pkt;
 174     struct AudioParams audio_src;
 175     struct AudioParams audio_tgt;
 176     struct SwrContext *swr_ctx;
 177     double audio_current_pts;
 178     double audio_current_pts_drift;
 179     int frame_drops_early;
 180     int frame_drops_late;
 181     AVFrame *frame;
 182
 183     enum ShowMode {
 184         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 185     } show_mode;
 186     int16_t sample_array[SAMPLE_ARRAY_SIZE];
 187     int sample_array_index;
 188     int last_i_start;
 189     RDFTContext *rdft;
 190     int rdft_bits;
 191     FFTSample *rdft_data;
 192     int xpos;
 193
 194     SDL_Thread *subtitle_tid;
 195     int subtitle_stream;
 196     int subtitle_stream_changed;
 197     AVStream *subtitle_st;
 198     PacketQueue subtitleq;
 199     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
 200     int subpq_size, subpq_rindex, subpq_windex;
 201     SDL_mutex *subpq_mutex;
 202     SDL_cond *subpq_cond;
 203
 204     double frame_timer;
 205     double frame_last_pts;
 206     double frame_last_duration;
 207     double frame_last_dropped_pts;
 208     double frame_last_returned_time;
 209     double frame_last_filter_delay;
 210     int64_t frame_last_dropped_pos;
 211     double video_clock;                          ///< pts of last decoded frame / predicted pts of next decoded frame
 212     int video_stream;
 213     AVStream *video_st;
 214     PacketQueue videoq;
 215     double video_current_pts;                    ///< current displayed pts (different from video_clock if frame fifos are used)
 216     double video_current_pts_drift;              ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
 217     int64_t video_current_pos;                   ///< current displayed file pos
 218     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
 219     int pictq_size, pictq_rindex, pictq_windex;
 220     SDL_mutex *pictq_mutex;
 221     SDL_cond *pictq_cond;
 222 #if !CONFIG_AVFILTER
 223     struct SwsContext *img_convert_ctx;
 224 #endif
 225
 226     char filename[1024];
 227     int width, height, xleft, ytop;
 228     int step;
 229
 230 #if CONFIG_AVFILTER
 231     AVFilterContext *in_video_filter;           ///< the first filter in the video chain
 232     AVFilterContext *out_video_filter;          ///< the last filter in the video chain
 233     int use_dr1;
 234     FrameBuffer *buffer_pool;
 235 #endif
 236
 237     int refresh;
 238     int last_video_stream, last_audio_stream, last_subtitle_stream;
 239 } VideoState;
 240
 241 typedef struct AllocEventProps {
 242     VideoState *is;
 243     AVFrame *frame;
 244 } AllocEventProps;
 245
 246 static int opt_help(const char *opt, const char *arg);
 247
 248 /* options specified by the user */
 249 static AVInputFormat *file_iformat;
 250 static const char *input_filename;
 251 static const char *window_title;
 252 static int fs_screen_width;
 253 static int fs_screen_height;
 254 static int screen_width  = 0;
 255 static int screen_height = 0;
 256 static int audio_disable;
 257 static int video_disable;
 258 static int wanted_stream[AVMEDIA_TYPE_NB] = {
 259     [AVMEDIA_TYPE_AUDIO]    = -1,
 260     [AVMEDIA_TYPE_VIDEO]    = -1,
 261     [AVMEDIA_TYPE_SUBTITLE] = -1,
 262 };
 263 static int seek_by_bytes = -1;
 264 static int display_disable;
 265 static int show_status = 1;
 266 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 267 static int64_t start_time = AV_NOPTS_VALUE;
 268 static int64_t duration = AV_NOPTS_VALUE;
 269 static int workaround_bugs = 1;
 270 static int fast = 0;
 271 static int genpts = 0;
 272 static int lowres = 0;
 273 static int idct = FF_IDCT_AUTO;
 274 static enum AVDiscard skip_frame       = AVDISCARD_DEFAULT;
 275 static enum AVDiscard skip_idct        = AVDISCARD_DEFAULT;
 276 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
 277 static int error_concealment = 3;
 278 static int decoder_reorder_pts = -1;
 279 static int autoexit;
 280 static int exit_on_keydown;
 281 static int exit_on_mousedown;
 282 static int loop = 1;
 283 static int framedrop = -1;
 284 static enum ShowMode show_mode = SHOW_MODE_NONE;
 285 static const char *audio_codec_name;
 286 static const char *subtitle_codec_name;
 287 static const char *video_codec_name;
 288 static int rdftspeed = 20;
 289 #if CONFIG_AVFILTER
 290 static char *vfilters = NULL;
 291 #endif
 292
 293 /* current context */
 294 static int is_full_screen;
 295 static int64_t audio_callback_time;
 296
 297 static AVPacket flush_pkt;
 298
 299 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 300 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
 301 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 302
 303 static SDL_Surface *screen;
 304
 305 void av_noreturn exit_program(int ret)
 306 {
 307     exit(ret);
 308 }
 309
 310 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
 311 {
 312     AVPacketList *pkt1;
 313
 314     if (q->abort_request)
 315        return -1;
 316
 317     pkt1 = av_malloc(sizeof(AVPacketList));
 318     if (!pkt1)
 319         return -1;
 320     pkt1->pkt = *pkt;
 321     pkt1->next = NULL;
 322
 323     if (!q->last_pkt)
 324         q->first_pkt = pkt1;
 325     else
 326         q->last_pkt->next = pkt1;
 327     q->last_pkt = pkt1;
 328     q->nb_packets++;
 329     q->size += pkt1->pkt.size + sizeof(*pkt1);
 330     /* XXX: should duplicate packet data in DV case */
 331     SDL_CondSignal(q->cond);
 332     return 0;
 333 }
 334
 335 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 336 {
 337     int ret;
 338
 339     /* duplicate the packet */
 340     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
 341         return -1;
 342
 343     SDL_LockMutex(q->mutex);
 344     ret = packet_queue_put_private(q, pkt);
 345     SDL_UnlockMutex(q->mutex);
 346
 347     if (pkt != &flush_pkt && ret < 0)
 348         av_free_packet(pkt);
 349
 350     return ret;
 351 }
 352
 353 /* packet queue handling */
 354 static void packet_queue_init(PacketQueue *q)
 355 {
 356     memset(q, 0, sizeof(PacketQueue));
 357     q->mutex = SDL_CreateMutex();
 358     q->cond = SDL_CreateCond();
 359     q->abort_request = 1;
 360 }
 361
 362 static void packet_queue_flush(PacketQueue *q)
 363 {
 364     AVPacketList *pkt, *pkt1;
 365
 366     SDL_LockMutex(q->mutex);
 367     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 368         pkt1 = pkt->next;
 369         av_free_packet(&pkt->pkt);
 370         av_freep(&pkt);
 371     }
 372     q->last_pkt = NULL;
 373     q->first_pkt = NULL;
 374     q->nb_packets = 0;
 375     q->size = 0;
 376     SDL_UnlockMutex(q->mutex);
 377 }
 378
 379 static void packet_queue_destroy(PacketQueue *q)
 380 {
 381     packet_queue_flush(q);
 382     SDL_DestroyMutex(q->mutex);
 383     SDL_DestroyCond(q->cond);
 384 }
 385
 386 static void packet_queue_abort(PacketQueue *q)
 387 {
 388     SDL_LockMutex(q->mutex);
 389
 390     q->abort_request = 1;
 391
 392     SDL_CondSignal(q->cond);
 393
 394     SDL_UnlockMutex(q->mutex);
 395 }
 396
 397 static void packet_queue_start(PacketQueue *q)
 398 {
 399     SDL_LockMutex(q->mutex);
 400     q->abort_request = 0;
 401     packet_queue_put_private(q, &flush_pkt);
 402     SDL_UnlockMutex(q->mutex);
 403 }
 404
 405 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 406 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
 407 {
 408     AVPacketList *pkt1;
 409     int ret;
 410
 411     SDL_LockMutex(q->mutex);
 412
 413     for (;;) {
 414         if (q->abort_request) {
 415             ret = -1;
 416             break;
 417         }
 418
 419         pkt1 = q->first_pkt;
 420         if (pkt1) {
 421             q->first_pkt = pkt1->next;
 422             if (!q->first_pkt)
 423                 q->last_pkt = NULL;
 424             q->nb_packets--;
 425             q->size -= pkt1->pkt.size + sizeof(*pkt1);
 426             *pkt = pkt1->pkt;
 427             av_free(pkt1);
 428             ret = 1;
 429             break;
 430         } else if (!block) {
 431             ret = 0;
 432             break;
 433         } else {
 434             SDL_CondWait(q->cond, q->mutex);
 435         }
 436     }
 437     SDL_UnlockMutex(q->mutex);
 438     return ret;
 439 }
 440
 441 static inline void fill_rectangle(SDL_Surface *screen,
 442                                   int x, int y, int w, int h, int color)
 443 {
 444     SDL_Rect rect;
 445     rect.x = x;
 446     rect.y = y;
 447     rect.w = w;
 448     rect.h = h;
 449     SDL_FillRect(screen, &rect, color);
 450 }
 451
 452 #define ALPHA_BLEND(a, oldp, newp, s)\
 453 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 454
 455 #define RGBA_IN(r, g, b, a, s)\
 456 {\
 457     unsigned int v = ((const uint32_t *)(s))[0];\
 458     a = (v >> 24) & 0xff;\
 459     r = (v >> 16) & 0xff;\
 460     g = (v >> 8) & 0xff;\
 461     b = v & 0xff;\
 462 }
 463
 464 #define YUVA_IN(y, u, v, a, s, pal)\
 465 {\
 466     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 467     a = (val >> 24) & 0xff;\
 468     y = (val >> 16) & 0xff;\
 469     u = (val >> 8) & 0xff;\
 470     v = val & 0xff;\
 471 }
 472
 473 #define YUVA_OUT(d, y, u, v, a)\
 474 {\
 475     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 476 }
 477
 478
 479 #define BPP 1
 480
 481 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 482 {
 483     int wrap, wrap3, width2, skip2;
 484     int y, u, v, a, u1, v1, a1, w, h;
 485     uint8_t *lum, *cb, *cr;
 486     const uint8_t *p;
 487     const uint32_t *pal;
 488     int dstx, dsty, dstw, dsth;
 489
 490     dstw = av_clip(rect->w, 0, imgw);
 491     dsth = av_clip(rect->h, 0, imgh);
 492     dstx = av_clip(rect->x, 0, imgw - dstw);
 493     dsty = av_clip(rect->y, 0, imgh - dsth);
 494     lum = dst->data[0] + dsty * dst->linesize[0];
 495     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 496     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 497
 498     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 499     skip2 = dstx >> 1;
 500     wrap = dst->linesize[0];
 501     wrap3 = rect->pict.linesize[0];
 502     p = rect->pict.data[0];
 503     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 504
 505     if (dsty & 1) {
 506         lum += dstx;
 507         cb += skip2;
 508         cr += skip2;
 509
 510         if (dstx & 1) {
 511             YUVA_IN(y, u, v, a, p, pal);
 512             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 513             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 514             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 515             cb++;
 516             cr++;
 517             lum++;
 518             p += BPP;
 519         }
 520         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 521             YUVA_IN(y, u, v, a, p, pal);
 522             u1 = u;
 523             v1 = v;
 524             a1 = a;
 525             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 526
 527             YUVA_IN(y, u, v, a, p + BPP, pal);
 528             u1 += u;
 529             v1 += v;
 530             a1 += a;
 531             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 532             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 533             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 534             cb++;
 535             cr++;
 536             p += 2 * BPP;
 537             lum += 2;
 538         }
 539         if (w) {
 540             YUVA_IN(y, u, v, a, p, pal);
 541             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 542             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 543             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 544             p++;
 545             lum++;
 546         }
 547         p += wrap3 - dstw * BPP;
 548         lum += wrap - dstw - dstx;
 549         cb += dst->linesize[1] - width2 - skip2;
 550         cr += dst->linesize[2] - width2 - skip2;
 551     }
 552     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
 553         lum += dstx;
 554         cb += skip2;
 555         cr += skip2;
 556
 557         if (dstx & 1) {
 558             YUVA_IN(y, u, v, a, p, pal);
 559             u1 = u;
 560             v1 = v;
 561             a1 = a;
 562             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 563             p += wrap3;
 564             lum += wrap;
 565             YUVA_IN(y, u, v, a, p, pal);
 566             u1 += u;
 567             v1 += v;
 568             a1 += a;
 569             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 570             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 571             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 572             cb++;
 573             cr++;
 574             p += -wrap3 + BPP;
 575             lum += -wrap + 1;
 576         }
 577         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 578             YUVA_IN(y, u, v, a, p, pal);
 579             u1 = u;
 580             v1 = v;
 581             a1 = a;
 582             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 583
 584             YUVA_IN(y, u, v, a, p + BPP, pal);
 585             u1 += u;
 586             v1 += v;
 587             a1 += a;
 588             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 589             p += wrap3;
 590             lum += wrap;
 591
 592             YUVA_IN(y, u, v, a, p, pal);
 593             u1 += u;
 594             v1 += v;
 595             a1 += a;
 596             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 597
 598             YUVA_IN(y, u, v, a, p + BPP, pal);
 599             u1 += u;
 600             v1 += v;
 601             a1 += a;
 602             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 603
 604             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 605             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 606
 607             cb++;
 608             cr++;
 609             p += -wrap3 + 2 * BPP;
 610             lum += -wrap + 2;
 611         }
 612         if (w) {
 613             YUVA_IN(y, u, v, a, p, pal);
 614             u1 = u;
 615             v1 = v;
 616             a1 = a;
 617             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 618             p += wrap3;
 619             lum += wrap;
 620             YUVA_IN(y, u, v, a, p, pal);
 621             u1 += u;
 622             v1 += v;
 623             a1 += a;
 624             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 625             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 626             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 627             cb++;
 628             cr++;
 629             p += -wrap3 + BPP;
 630             lum += -wrap + 1;
 631         }
 632         p += wrap3 + (wrap3 - dstw * BPP);
 633         lum += wrap + (wrap - dstw - dstx);
 634         cb += dst->linesize[1] - width2 - skip2;
 635         cr += dst->linesize[2] - width2 - skip2;
 636     }
 637     /* handle odd height */
 638     if (h) {
 639         lum += dstx;
 640         cb += skip2;
 641         cr += skip2;
 642
 643         if (dstx & 1) {
 644             YUVA_IN(y, u, v, a, p, pal);
 645             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 646             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 647             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 648             cb++;
 649             cr++;
 650             lum++;
 651             p += BPP;
 652         }
 653         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 654             YUVA_IN(y, u, v, a, p, pal);
 655             u1 = u;
 656             v1 = v;
 657             a1 = a;
 658             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 659
 660             YUVA_IN(y, u, v, a, p + BPP, pal);
 661             u1 += u;
 662             v1 += v;
 663             a1 += a;
 664             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 665             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
 666             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
 667             cb++;
 668             cr++;
 669             p += 2 * BPP;
 670             lum += 2;
 671         }
 672         if (w) {
 673             YUVA_IN(y, u, v, a, p, pal);
 674             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 675             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 676             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 677         }
 678     }
 679 }
 680
 681 static void free_subpicture(SubPicture *sp)
 682 {
 683     avsubtitle_free(&sp->sub);
 684 }
 685
 686 static void video_image_display(VideoState *is)
 687 {
 688     VideoPicture *vp;
 689     SubPicture *sp;
 690     AVPicture pict;
 691     float aspect_ratio;
 692     int width, height, x, y;
 693     SDL_Rect rect;
 694     int i;
 695
 696     vp = &is->pictq[is->pictq_rindex];
 697     if (vp->bmp) {
 698         if (vp->sample_aspect_ratio.num == 0)
 699             aspect_ratio = 0;
 700         else
 701             aspect_ratio = av_q2d(vp->sample_aspect_ratio);
 702
 703         if (aspect_ratio <= 0.0)
 704             aspect_ratio = 1.0;
 705         aspect_ratio *= (float)vp->width / (float)vp->height;
 706
 707         if (is->subtitle_st) {
 708             if (is->subpq_size > 0) {
 709                 sp = &is->subpq[is->subpq_rindex];
 710
 711                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
 712                     SDL_LockYUVOverlay (vp->bmp);
 713
 714                     pict.data[0] = vp->bmp->pixels[0];
 715                     pict.data[1] = vp->bmp->pixels[2];
 716                     pict.data[2] = vp->bmp->pixels[1];
 717
 718                     pict.linesize[0] = vp->bmp->pitches[0];
 719                     pict.linesize[1] = vp->bmp->pitches[2];
 720                     pict.linesize[2] = vp->bmp->pitches[1];
 721
 722                     for (i = 0; i < sp->sub.num_rects; i++)
 723                         blend_subrect(&pict, sp->sub.rects[i],
 724                                       vp->bmp->w, vp->bmp->h);
 725
 726                     SDL_UnlockYUVOverlay (vp->bmp);
 727                 }
 728             }
 729         }
 730
 731
 732         /* XXX: we suppose the screen has a 1.0 pixel ratio */
 733         height = is->height;
 734         width = ((int)rint(height * aspect_ratio)) & ~1;
 735         if (width > is->width) {
 736             width = is->width;
 737             height = ((int)rint(width / aspect_ratio)) & ~1;
 738         }
 739         x = (is->width - width) / 2;
 740         y = (is->height - height) / 2;
 741         is->no_background = 0;
 742         rect.x = is->xleft + x;
 743         rect.y = is->ytop  + y;
 744         rect.w = FFMAX(width,  1);
 745         rect.h = FFMAX(height, 1);
 746         SDL_DisplayYUVOverlay(vp->bmp, &rect);
 747     }
 748 }
 749
 750 static inline int compute_mod(int a, int b)
 751 {
 752     return a < 0 ? a%b + b : a%b;
 753 }
 754
 755 static void video_audio_display(VideoState *s)
 756 {
 757     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 758     int ch, channels, h, h2, bgcolor, fgcolor;
 759     int16_t time_diff;
 760     int rdft_bits, nb_freq;
 761
 762     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
 763         ;
 764     nb_freq = 1 << (rdft_bits - 1);
 765
 766     /* compute display index : center on currently output samples */
 767     channels = s->audio_tgt.channels;
 768     nb_display_channels = channels;
 769     if (!s->paused) {
 770         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
 771         n = 2 * channels;
 772         delay = s->audio_write_buf_size;
 773         delay /= n;
 774
 775         /* to be more precise, we take into account the time spent since
 776            the last buffer computation */
 777         if (audio_callback_time) {
 778             time_diff = av_gettime() - audio_callback_time;
 779             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
 780         }
 781
 782         delay += 2 * data_used;
 783         if (delay < data_used)
 784             delay = data_used;
 785
 786         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 787         if (s->show_mode == SHOW_MODE_WAVES) {
 788             h = INT_MIN;
 789             for (i = 0; i < 1000; i += channels) {
 790                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
 791                 int a = s->sample_array[idx];
 792                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
 793                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
 794                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
 795                 int score = a - d;
 796                 if (h < score && (b ^ c) < 0) {
 797                     h = score;
 798                     i_start = idx;
 799                 }
 800             }
 801         }
 802
 803         s->last_i_start = i_start;
 804     } else {
 805         i_start = s->last_i_start;
 806     }
 807
 808     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 809     if (s->show_mode == SHOW_MODE_WAVES) {
 810         fill_rectangle(screen,
 811                        s->xleft, s->ytop, s->width, s->height,
 812                        bgcolor);
 813
 814         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 815
 816         /* total height for one channel */
 817         h = s->height / nb_display_channels;
 818         /* graph height / 2 */
 819         h2 = (h * 9) / 20;
 820         for (ch = 0; ch < nb_display_channels; ch++) {
 821             i = i_start + ch;
 822             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 823             for (x = 0; x < s->width; x++) {
 824                 y = (s->sample_array[i] * h2) >> 15;
 825                 if (y < 0) {
 826                     y = -y;
 827                     ys = y1 - y;
 828                 } else {
 829                     ys = y1;
 830                 }
 831                 fill_rectangle(screen,
 832                                s->xleft + x, ys, 1, y,
 833                                fgcolor);
 834                 i += channels;
 835                 if (i >= SAMPLE_ARRAY_SIZE)
 836                     i -= SAMPLE_ARRAY_SIZE;
 837             }
 838         }
 839
 840         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 841
 842         for (ch = 1; ch < nb_display_channels; ch++) {
 843             y = s->ytop + ch * h;
 844             fill_rectangle(screen,
 845                            s->xleft, y, s->width, 1,
 846                            fgcolor);
 847         }
 848         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 849     } else {
 850         nb_display_channels= FFMIN(nb_display_channels, 2);
 851         if (rdft_bits != s->rdft_bits) {
 852             av_rdft_end(s->rdft);
 853             av_free(s->rdft_data);
 854             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
 855             s->rdft_bits = rdft_bits;
 856             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
 857         }
 858         {
 859             FFTSample *data[2];
 860             for (ch = 0; ch < nb_display_channels; ch++) {
 861                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
 862                 i = i_start + ch;
 863                 for (x = 0; x < 2 * nb_freq; x++) {
 864                     double w = (x-nb_freq) * (1.0 / nb_freq);
 865                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
 866                     i += channels;
 867                     if (i >= SAMPLE_ARRAY_SIZE)
 868                         i -= SAMPLE_ARRAY_SIZE;
 869                 }
 870                 av_rdft_calc(s->rdft, data[ch]);
 871             }
 872             // least efficient way to do this, we should of course directly access it but its more than fast enough
 873             for (y = 0; y < s->height; y++) {
 874                 double w = 1 / sqrt(nb_freq);
 875                 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]));
 876                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
 877                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
 878                 a = FFMIN(a, 255);
 879                 b = FFMIN(b, 255);
 880                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
 881
 882                 fill_rectangle(screen,
 883                             s->xpos, s->height-y, 1, 1,
 884                             fgcolor);
 885             }
 886         }
 887         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
 888         if (!s->paused)
 889             s->xpos++;
 890         if (s->xpos >= s->width)
 891             s->xpos= s->xleft;
 892     }
 893 }
 894
 895 static void stream_close(VideoState *is)
 896 {
 897     VideoPicture *vp;
 898     int i;
 899     /* XXX: use a special url_shutdown call to abort parse cleanly */
 900     is->abort_request = 1;
 901     SDL_WaitThread(is->read_tid, NULL);
 902     SDL_WaitThread(is->refresh_tid, NULL);
 903     packet_queue_destroy(&is->videoq);
 904     packet_queue_destroy(&is->audioq);
 905     packet_queue_destroy(&is->subtitleq);
 906
 907     /* free all pictures */
 908     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
 909         vp = &is->pictq[i];
 910 #if CONFIG_AVFILTER
 911         if (vp->picref) {
 912             avfilter_unref_buffer(vp->picref);
 913             vp->picref = NULL;
 914         }
 915 #endif
 916         if (vp->bmp) {
 917             SDL_FreeYUVOverlay(vp->bmp);
 918             vp->bmp = NULL;
 919         }
 920     }
 921     SDL_DestroyMutex(is->pictq_mutex);
 922     SDL_DestroyCond(is->pictq_cond);
 923     SDL_DestroyMutex(is->subpq_mutex);
 924     SDL_DestroyCond(is->subpq_cond);
 925 #if !CONFIG_AVFILTER
 926     if (is->img_convert_ctx)
 927         sws_freeContext(is->img_convert_ctx);
 928 #endif
 929     av_free(is);
 930 }
 931
 932 static void do_exit(VideoState *is)
 933 {
 934     if (is) {
 935         stream_close(is);
 936     }
 937     av_lockmgr_register(NULL);
 938     uninit_opts();
 939 #if CONFIG_AVFILTER
 940     avfilter_uninit();
 941 #endif
 942     avformat_network_deinit();
 943     if (show_status)
 944         printf("\n");
 945     SDL_Quit();
 946     av_log(NULL, AV_LOG_QUIET, "%s", "");
 947     exit(0);
 948 }
 949
 950 static void sigterm_handler(int sig)
 951 {
 952     exit(123);
 953 }
 954
 955 static int video_open(VideoState *is, int force_set_video_mode)
 956 {
 957     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 958     int w,h;
 959     VideoPicture *vp = &is->pictq[is->pictq_rindex];
 960
 961     if (is_full_screen) flags |= SDL_FULLSCREEN;
 962     else                flags |= SDL_RESIZABLE;
 963
 964     if (is_full_screen && fs_screen_width) {
 965         w = fs_screen_width;
 966         h = fs_screen_height;
 967     } else if (!is_full_screen && screen_width) {
 968         w = screen_width;
 969         h = screen_height;
 970     } else if (vp->width) {
 971         w = vp->width;
 972         h = vp->height;
 973     } else {
 974         w = 640;
 975         h = 480;
 976     }
 977     if (screen && is->width == screen->w && screen->w == w
 978        && is->height== screen->h && screen->h == h && !force_set_video_mode)
 979         return 0;
 980     screen = SDL_SetVideoMode(w, h, 0, flags);
 981     if (!screen) {
 982         fprintf(stderr, "SDL: could not set video mode - exiting\n");
 983         do_exit(is);
 984     }
 985     if (!window_title)
 986         window_title = input_filename;
 987     SDL_WM_SetCaption(window_title, window_title);
 988
 989     is->width  = screen->w;
 990     is->height = screen->h;
 991
 992     return 0;
 993 }
 994
 995 /* display the current picture, if any */
 996 static void video_display(VideoState *is)
 997 {
 998     if (!screen)
 999         video_open(is, 0);
1000     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1001         video_audio_display(is);
1002     else if (is->video_st)
1003         video_image_display(is);
1004 }
1005
1006 static int refresh_thread(void *opaque)
1007 {
1008     VideoState *is= opaque;
1009     while (!is->abort_request) {
1010         SDL_Event event;
1011         event.type = FF_REFRESH_EVENT;
1012         event.user.data1 = opaque;
1013         if (!is->refresh && (!is->paused || is->force_refresh)) {
1014             is->refresh = 1;
1015             SDL_PushEvent(&event);
1016         }
1017         //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
1018         av_usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
1019     }
1020     return 0;
1021 }
1022
1023 /* get the current audio clock value */
1024 static double get_audio_clock(VideoState *is)
1025 {
1026     if (is->paused) {
1027         return is->audio_current_pts;
1028     } else {
1029         return is->audio_current_pts_drift + av_gettime() / 1000000.0;
1030     }
1031 }
1032
1033 /* get the current video clock value */
1034 static double get_video_clock(VideoState *is)
1035 {
1036     if (is->paused) {
1037         return is->video_current_pts;
1038     } else {
1039         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1040     }
1041 }
1042
1043 /* get the current external clock value */
1044 static double get_external_clock(VideoState *is)
1045 {
1046     int64_t ti;
1047     ti = av_gettime();
1048     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1049 }
1050
1051 /* get the current master clock value */
1052 static double get_master_clock(VideoState *is)
1053 {
1054     double val;
1055
1056     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1057         if (is->video_st)
1058             val = get_video_clock(is);
1059         else
1060             val = get_audio_clock(is);
1061     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1062         if (is->audio_st)
1063             val = get_audio_clock(is);
1064         else
1065             val = get_video_clock(is);
1066     } else {
1067         val = get_external_clock(is);
1068     }
1069     return val;
1070 }
1071
1072 /* seek in the stream */
1073 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1074 {
1075     if (!is->seek_req) {
1076         is->seek_pos = pos;
1077         is->seek_rel = rel;
1078         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1079         if (seek_by_bytes)
1080             is->seek_flags |= AVSEEK_FLAG_BYTE;
1081         is->seek_req = 1;
1082     }
1083 }
1084
1085 /* pause or resume the video */
1086 static void stream_toggle_pause(VideoState *is)
1087 {
1088     if (is->paused) {
1089         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1090         if (is->read_pause_return != AVERROR(ENOSYS)) {
1091             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1092         }
1093         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1094     }
1095     is->paused = !is->paused;
1096 }
1097
1098 static double compute_target_delay(double delay, VideoState *is)
1099 {
1100     double sync_threshold, diff;
1101
1102     /* update delay to follow master synchronisation source */
1103     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1104          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1105         /* if video is slave, we try to correct big delays by
1106            duplicating or deleting a frame */
1107         diff = get_video_clock(is) - get_master_clock(is);
1108
1109         /* skip or repeat frame. We take into account the
1110            delay to compute the threshold. I still don't know
1111            if it is the best guess */
1112         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1113         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1114             if (diff <= -sync_threshold)
1115                 delay = 0;
1116             else if (diff >= sync_threshold)
1117                 delay = 2 * delay;
1118         }
1119     }
1120
1121     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1122             delay, -diff);
1123
1124     return delay;
1125 }
1126
1127 static void pictq_next_picture(VideoState *is) {
1128     /* update queue size and signal for next picture */
1129     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1130         is->pictq_rindex = 0;
1131
1132     SDL_LockMutex(is->pictq_mutex);
1133     is->pictq_size--;
1134     SDL_CondSignal(is->pictq_cond);
1135     SDL_UnlockMutex(is->pictq_mutex);
1136 }
1137
1138 static void update_video_pts(VideoState *is, double pts, int64_t pos) {
1139     double time = av_gettime() / 1000000.0;
1140     /* update current video pts */
1141     is->video_current_pts = pts;
1142     is->video_current_pts_drift = is->video_current_pts - time;
1143     is->video_current_pos = pos;
1144     is->frame_last_pts = pts;
1145 }
1146
1147 /* called to display each frame */
1148 static void video_refresh(void *opaque)
1149 {
1150     VideoState *is = opaque;
1151     VideoPicture *vp;
1152     double time;
1153
1154     SubPicture *sp, *sp2;
1155
1156     if (is->video_st) {
1157 retry:
1158         if (is->pictq_size == 0) {
1159             SDL_LockMutex(is->pictq_mutex);
1160             if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
1161                 update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos);
1162                 is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1163             }
1164             SDL_UnlockMutex(is->pictq_mutex);
1165             // nothing to do, no picture to display in the que
1166         } else {
1167             double last_duration, duration, delay;
1168             /* dequeue the picture */
1169             vp = &is->pictq[is->pictq_rindex];
1170
1171             if (vp->skip) {
1172                 pictq_next_picture(is);
1173                 goto retry;
1174             }
1175
1176             if (is->paused)
1177                 goto display;
1178
1179             /* compute nominal last_duration */
1180             last_duration = vp->pts - is->frame_last_pts;
1181             if (last_duration > 0 && last_duration < 10.0) {
1182                 /* if duration of the last frame was sane, update last_duration in video state */
1183                 is->frame_last_duration = last_duration;
1184             }
1185             delay = compute_target_delay(is->frame_last_duration, is);
1186
1187             time= av_gettime()/1000000.0;
1188             if (time < is->frame_timer + delay)
1189                 return;
1190
1191             if (delay > 0)
1192                 is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
1193
1194             SDL_LockMutex(is->pictq_mutex);
1195             update_video_pts(is, vp->pts, vp->pos);
1196             SDL_UnlockMutex(is->pictq_mutex);
1197
1198             if (is->pictq_size > 1) {
1199                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1200                 duration = nextvp->pts - vp->pts;
1201                 if((framedrop>0 || (framedrop && is->audio_st)) && time > is->frame_timer + duration){
1202                     is->frame_drops_late++;
1203                     pictq_next_picture(is);
1204                     goto retry;
1205                 }
1206             }
1207
1208             if (is->subtitle_st) {
1209                 if (is->subtitle_stream_changed) {
1210                     SDL_LockMutex(is->subpq_mutex);
1211
1212                     while (is->subpq_size) {
1213                         free_subpicture(&is->subpq[is->subpq_rindex]);
1214
1215                         /* update queue size and signal for next picture */
1216                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1217                             is->subpq_rindex = 0;
1218
1219                         is->subpq_size--;
1220                     }
1221                     is->subtitle_stream_changed = 0;
1222
1223                     SDL_CondSignal(is->subpq_cond);
1224                     SDL_UnlockMutex(is->subpq_mutex);
1225                 } else {
1226                     if (is->subpq_size > 0) {
1227                         sp = &is->subpq[is->subpq_rindex];
1228
1229                         if (is->subpq_size > 1)
1230                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1231                         else
1232                             sp2 = NULL;
1233
1234                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1235                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1236                         {
1237                             free_subpicture(sp);
1238
1239                             /* update queue size and signal for next picture */
1240                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1241                                 is->subpq_rindex = 0;
1242
1243                             SDL_LockMutex(is->subpq_mutex);
1244                             is->subpq_size--;
1245                             SDL_CondSignal(is->subpq_cond);
1246                             SDL_UnlockMutex(is->subpq_mutex);
1247                         }
1248                     }
1249                 }
1250             }
1251
1252 display:
1253             /* display picture */
1254             if (!display_disable)
1255                 video_display(is);
1256
1257             if (!is->paused)
1258                 pictq_next_picture(is);
1259         }
1260     } else if (is->audio_st) {
1261         /* draw the next audio frame */
1262
1263         /* if only audio stream, then display the audio bars (better
1264            than nothing, just to test the implementation */
1265
1266         /* display picture */
1267         if (!display_disable)
1268             video_display(is);
1269     }
1270     is->force_refresh = 0;
1271     if (show_status) {
1272         static int64_t last_time;
1273         int64_t cur_time;
1274         int aqsize, vqsize, sqsize;
1275         double av_diff;
1276
1277         cur_time = av_gettime();
1278         if (!last_time || (cur_time - last_time) >= 30000) {
1279             aqsize = 0;
1280             vqsize = 0;
1281             sqsize = 0;
1282             if (is->audio_st)
1283                 aqsize = is->audioq.size;
1284             if (is->video_st)
1285                 vqsize = is->videoq.size;
1286             if (is->subtitle_st)
1287                 sqsize = is->subtitleq.size;
1288             av_diff = 0;
1289             if (is->audio_st && is->video_st)
1290                 av_diff = get_audio_clock(is) - get_video_clock(is);
1291             printf("%7.2f A-V:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1292                    get_master_clock(is),
1293                    av_diff,
1294                    is->frame_drops_early + is->frame_drops_late,
1295                    aqsize / 1024,
1296                    vqsize / 1024,
1297                    sqsize,
1298                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1299                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1300             fflush(stdout);
1301             last_time = cur_time;
1302         }
1303     }
1304 }
1305
1306 /* allocate a picture (needs to do that in main thread to avoid
1307    potential locking problems */
1308 static void alloc_picture(AllocEventProps *event_props)
1309 {
1310     VideoState *is = event_props->is;
1311     AVFrame *frame = event_props->frame;
1312     VideoPicture *vp;
1313
1314     vp = &is->pictq[is->pictq_windex];
1315
1316     if (vp->bmp)
1317         SDL_FreeYUVOverlay(vp->bmp);
1318
1319 #if CONFIG_AVFILTER
1320     if (vp->picref)
1321         avfilter_unref_buffer(vp->picref);
1322     vp->picref = NULL;
1323 #endif
1324
1325     vp->width   = frame->width;
1326     vp->height  = frame->height;
1327
1328     video_open(event_props->is, 0);
1329
1330     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1331                                    SDL_YV12_OVERLAY,
1332                                    screen);
1333     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1334         /* SDL allocates a buffer smaller than requested if the video
1335          * overlay hardware is unable to support the requested size. */
1336         fprintf(stderr, "Error: the video system does not support an image\n"
1337                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1338                         "to reduce the image size.\n", vp->width, vp->height );
1339         do_exit(is);
1340     }
1341
1342     SDL_LockMutex(is->pictq_mutex);
1343     vp->allocated = 1;
1344     SDL_CondSignal(is->pictq_cond);
1345     SDL_UnlockMutex(is->pictq_mutex);
1346 }
1347
1348 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1349 {
1350     VideoPicture *vp;
1351     double frame_delay, pts = pts1;
1352
1353     /* compute the exact PTS for the picture if it is omitted in the stream
1354      * pts1 is the dts of the pkt / pts of the frame */
1355     if (pts != 0) {
1356         /* update video clock with pts, if present */
1357         is->video_clock = pts;
1358     } else {
1359         pts = is->video_clock;
1360     }
1361     /* update video clock for next frame */
1362     frame_delay = av_q2d(is->video_st->codec->time_base);
1363     /* for MPEG2, the frame can be repeated, so we update the
1364        clock accordingly */
1365     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1366     is->video_clock += frame_delay;
1367
1368 #if defined(DEBUG_SYNC) && 0
1369     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1370            av_get_picture_type_char(src_frame->pict_type), pts, pts1);
1371 #endif
1372
1373     /* wait until we have space to put a new picture */
1374     SDL_LockMutex(is->pictq_mutex);
1375
1376     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1377            !is->videoq.abort_request) {
1378         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1379     }
1380     SDL_UnlockMutex(is->pictq_mutex);
1381
1382     if (is->videoq.abort_request)
1383         return -1;
1384
1385     vp = &is->pictq[is->pictq_windex];
1386
1387     /* alloc or resize hardware picture buffer */
1388     if (!vp->bmp || vp->reallocate ||
1389         vp->width  != src_frame->width ||
1390         vp->height != src_frame->height) {
1391         SDL_Event event;
1392         AllocEventProps event_props;
1393
1394         event_props.frame = src_frame;
1395         event_props.is = is;
1396
1397         vp->allocated  = 0;
1398         vp->reallocate = 0;
1399
1400         /* the allocation must be done in the main thread to avoid
1401            locking problems. We wait in this block for the event to complete,
1402            so we can pass a pointer to event_props to it. */
1403         event.type = FF_ALLOC_EVENT;
1404         event.user.data1 = &event_props;
1405         SDL_PushEvent(&event);
1406
1407         /* wait until the picture is allocated */
1408         SDL_LockMutex(is->pictq_mutex);
1409         while (!vp->allocated && !is->videoq.abort_request) {
1410             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1411         }
1412         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1413         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1414             while (!vp->allocated) {
1415                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1416             }
1417         }
1418         SDL_UnlockMutex(is->pictq_mutex);
1419
1420         if (is->videoq.abort_request)
1421             return -1;
1422     }
1423
1424     /* if the frame is not skipped, then display it */
1425     if (vp->bmp) {
1426         AVPicture pict = { { 0 } };
1427 #if CONFIG_AVFILTER
1428         if (vp->picref)
1429             avfilter_unref_buffer(vp->picref);
1430         vp->picref = src_frame->opaque;
1431 #endif
1432
1433         /* get a pointer on the bitmap */
1434         SDL_LockYUVOverlay (vp->bmp);
1435
1436         pict.data[0] = vp->bmp->pixels[0];
1437         pict.data[1] = vp->bmp->pixels[2];
1438         pict.data[2] = vp->bmp->pixels[1];
1439
1440         pict.linesize[0] = vp->bmp->pitches[0];
1441         pict.linesize[1] = vp->bmp->pitches[2];
1442         pict.linesize[2] = vp->bmp->pitches[1];
1443
1444 #if CONFIG_AVFILTER
1445         // FIXME use direct rendering
1446         av_picture_copy(&pict, (AVPicture *)src_frame,
1447                         src_frame->format, vp->width, vp->height);
1448         vp->sample_aspect_ratio = vp->picref->video->sample_aspect_ratio;
1449 #else
1450         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1451         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1452             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1453             PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1454         if (is->img_convert_ctx == NULL) {
1455             fprintf(stderr, "Cannot initialize the conversion context\n");
1456             exit(1);
1457         }
1458         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1459                   0, vp->height, pict.data, pict.linesize);
1460         vp->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, src_frame);
1461 #endif
1462         /* update the bitmap content */
1463         SDL_UnlockYUVOverlay(vp->bmp);
1464
1465         vp->pts = pts;
1466         vp->pos = pos;
1467         vp->skip = 0;
1468
1469         /* now we can update the picture count */
1470         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1471             is->pictq_windex = 0;
1472         SDL_LockMutex(is->pictq_mutex);
1473         is->pictq_size++;
1474         SDL_UnlockMutex(is->pictq_mutex);
1475     }
1476     return 0;
1477 }
1478
1479 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1480 {
1481     int got_picture, i;
1482
1483     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1484         return -1;
1485
1486     if (pkt->data == flush_pkt.data) {
1487         avcodec_flush_buffers(is->video_st->codec);
1488
1489         SDL_LockMutex(is->pictq_mutex);
1490         // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1491         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1492             is->pictq[i].skip = 1;
1493         }
1494         while (is->pictq_size && !is->videoq.abort_request) {
1495             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1496         }
1497         is->video_current_pos = -1;
1498         is->frame_last_pts = AV_NOPTS_VALUE;
1499         is->frame_last_duration = 0;
1500         is->frame_timer = (double)av_gettime() / 1000000.0;
1501         is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1502         SDL_UnlockMutex(is->pictq_mutex);
1503
1504         return 0;
1505     }
1506
1507     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1508         return 0;
1509
1510     if (got_picture) {
1511         int ret = 1;
1512
1513         if (decoder_reorder_pts == -1) {
1514             *pts = av_frame_get_best_effort_timestamp(frame);
1515         } else if (decoder_reorder_pts) {
1516             *pts = frame->pkt_pts;
1517         } else {
1518             *pts = frame->pkt_dts;
1519         }
1520
1521         if (*pts == AV_NOPTS_VALUE) {
1522             *pts = 0;
1523         }
1524
1525         if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK) &&
1526              (framedrop>0 || (framedrop && is->audio_st))) {
1527             SDL_LockMutex(is->pictq_mutex);
1528             if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
1529                 double clockdiff = get_video_clock(is) - get_master_clock(is);
1530                 double dpts = av_q2d(is->video_st->time_base) * *pts;
1531                 double ptsdiff = dpts - is->frame_last_pts;
1532                 if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
1533                      ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
1534                      clockdiff + ptsdiff - is->frame_last_filter_delay < 0) {
1535                     is->frame_last_dropped_pos = pkt->pos;
1536                     is->frame_last_dropped_pts = dpts;
1537                     is->frame_drops_early++;
1538                     ret = 0;
1539                 }
1540             }
1541             SDL_UnlockMutex(is->pictq_mutex);
1542         }
1543
1544         return ret;
1545     }
1546     return 0;
1547 }
1548
1549 #if CONFIG_AVFILTER
1550 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1551 {
1552     static const enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1553     char sws_flags_str[128];
1554     char buffersrc_args[256];
1555     int ret;
1556     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1557     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1558     AVCodecContext *codec = is->video_st->codec;
1559
1560     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1561     graph->scale_sws_opts = av_strdup(sws_flags_str);
1562
1563     snprintf(buffersrc_args, sizeof(buffersrc_args),
1564              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1565              codec->width, codec->height, codec->pix_fmt,
1566              is->video_st->time_base.num, is->video_st->time_base.den,
1567              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1568
1569     if ((ret = avfilter_graph_create_filter(&filt_src,
1570                                             avfilter_get_by_name("buffer"),
1571                                             "ffplay_buffer", buffersrc_args, NULL,
1572                                             graph)) < 0)
1573         return ret;
1574
1575     buffersink_params->pixel_fmts = pix_fmts;
1576     ret = avfilter_graph_create_filter(&filt_out,
1577                                        avfilter_get_by_name("buffersink"),
1578                                        "ffplay_buffersink", NULL, buffersink_params, graph);
1579     av_freep(&buffersink_params);
1580     if (ret < 0)
1581         return ret;
1582
1583     if ((ret = avfilter_graph_create_filter(&filt_format,
1584                                             avfilter_get_by_name("format"),
1585                                             "format", "yuv420p", NULL, graph)) < 0)
1586         return ret;
1587     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1588         return ret;
1589
1590
1591     if (vfilters) {
1592         AVFilterInOut *outputs = avfilter_inout_alloc();
1593         AVFilterInOut *inputs  = avfilter_inout_alloc();
1594
1595         outputs->name    = av_strdup("in");
1596         outputs->filter_ctx = filt_src;
1597         outputs->pad_idx = 0;
1598         outputs->next    = NULL;
1599
1600         inputs->name    = av_strdup("out");
1601         inputs->filter_ctx = filt_format;
1602         inputs->pad_idx = 0;
1603         inputs->next    = NULL;
1604
1605         if ((ret = avfilter_graph_parse(graph, vfilters, &inputs, &outputs, NULL)) < 0)
1606             return ret;
1607     } else {
1608         if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1609             return ret;
1610     }
1611
1612     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1613         return ret;
1614
1615     is->in_video_filter  = filt_src;
1616     is->out_video_filter = filt_out;
1617
1618     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1619         is->use_dr1 = 1;
1620         codec->get_buffer     = codec_get_buffer;
1621         codec->release_buffer = codec_release_buffer;
1622         codec->opaque         = &is->buffer_pool;
1623     }
1624
1625     return ret;
1626 }
1627
1628 #endif  /* CONFIG_AVFILTER */
1629
1630 static int video_thread(void *arg)
1631 {
1632     VideoState *is = arg;
1633     AVFrame *frame = avcodec_alloc_frame();
1634     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1635     double pts;
1636     int ret;
1637
1638 #if CONFIG_AVFILTER
1639     AVFilterGraph *graph = avfilter_graph_alloc();
1640     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1641     int last_w = is->video_st->codec->width;
1642     int last_h = is->video_st->codec->height;
1643     enum PixelFormat last_format = is->video_st->codec->pix_fmt;
1644
1645     if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1646         SDL_Event event;
1647         event.type = FF_QUIT_EVENT;
1648         event.user.data1 = is;
1649         SDL_PushEvent(&event);
1650         goto the_end;
1651     }
1652     filt_in  = is->in_video_filter;
1653     filt_out = is->out_video_filter;
1654 #endif
1655
1656     for (;;) {
1657         AVPacket pkt;
1658 #if CONFIG_AVFILTER
1659         AVFilterBufferRef *picref;
1660         AVRational tb = filt_out->inputs[0]->time_base;
1661 #endif
1662         while (is->paused && !is->videoq.abort_request)
1663             SDL_Delay(10);
1664
1665         avcodec_get_frame_defaults(frame);
1666         ret = get_video_frame(is, frame, &pts_int, &pkt);
1667         if (ret < 0)
1668             goto the_end;
1669
1670         if (!ret) {
1671             av_free_packet(&pkt);
1672             continue;
1673         }
1674
1675 #if CONFIG_AVFILTER
1676         if (   last_w != is->video_st->codec->width
1677             || last_h != is->video_st->codec->height
1678             || last_format != is->video_st->codec->pix_fmt) {
1679             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1680                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1681             avfilter_graph_free(&graph);
1682             graph = avfilter_graph_alloc();
1683             if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1684                 av_free_packet(&pkt);
1685                 goto the_end;
1686             }
1687             filt_in  = is->in_video_filter;
1688             filt_out = is->out_video_filter;
1689             last_w = is->video_st->codec->width;
1690             last_h = is->video_st->codec->height;
1691             last_format = is->video_st->codec->pix_fmt;
1692         }
1693
1694         frame->pts = pts_int;
1695         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1696         if (is->use_dr1 && frame->opaque) {
1697             FrameBuffer      *buf = frame->opaque;
1698             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1699                                         frame->data, frame->linesize,
1700                                         AV_PERM_READ | AV_PERM_PRESERVE,
1701                                         frame->width, frame->height,
1702                                         frame->format);
1703
1704             avfilter_copy_frame_props(fb, frame);
1705             fb->buf->priv           = buf;
1706             fb->buf->free           = filter_release_buffer;
1707
1708             buf->refcount++;
1709             av_buffersrc_buffer(filt_in, fb);
1710
1711         } else
1712             av_buffersrc_write_frame(filt_in, frame);
1713
1714         av_free_packet(&pkt);
1715
1716         while (ret >= 0) {
1717             is->frame_last_returned_time = av_gettime() / 1000000.0;
1718
1719             ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
1720             if (ret < 0) {
1721                 ret = 0;
1722                 break;
1723             }
1724
1725             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1726             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1727                 is->frame_last_filter_delay = 0;
1728
1729             avfilter_copy_buf_props(frame, picref);
1730
1731             pts_int = picref->pts;
1732             tb      = filt_out->inputs[0]->time_base;
1733             pos     = picref->pos;
1734             frame->opaque = picref;
1735
1736             if (av_cmp_q(tb, is->video_st->time_base)) {
1737                 av_unused int64_t pts1 = pts_int;
1738                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1739                 av_dlog(NULL, "video_thread(): "
1740                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1741                         tb.num, tb.den, pts1,
1742                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1743             }
1744             pts = pts_int * av_q2d(is->video_st->time_base);
1745             ret = queue_picture(is, frame, pts, pos);
1746         }
1747 #else
1748         pts = pts_int * av_q2d(is->video_st->time_base);
1749         ret = queue_picture(is, frame, pts, pkt.pos);
1750 #endif
1751
1752         if (ret < 0)
1753             goto the_end;
1754
1755         if (is->step)
1756             stream_toggle_pause(is);
1757     }
1758  the_end:
1759     avcodec_flush_buffers(is->video_st->codec);
1760 #if CONFIG_AVFILTER
1761     av_freep(&vfilters);
1762     avfilter_graph_free(&graph);
1763 #endif
1764     av_free(frame);
1765     return 0;
1766 }
1767
1768 static int subtitle_thread(void *arg)
1769 {
1770     VideoState *is = arg;
1771     SubPicture *sp;
1772     AVPacket pkt1, *pkt = &pkt1;
1773     int got_subtitle;
1774     double pts;
1775     int i, j;
1776     int r, g, b, y, u, v, a;
1777
1778     for (;;) {
1779         while (is->paused && !is->subtitleq.abort_request) {
1780             SDL_Delay(10);
1781         }
1782         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1783             break;
1784
1785         if (pkt->data == flush_pkt.data) {
1786             avcodec_flush_buffers(is->subtitle_st->codec);
1787             continue;
1788         }
1789         SDL_LockMutex(is->subpq_mutex);
1790         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1791                !is->subtitleq.abort_request) {
1792             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1793         }
1794         SDL_UnlockMutex(is->subpq_mutex);
1795
1796         if (is->subtitleq.abort_request)
1797             return 0;
1798
1799         sp = &is->subpq[is->subpq_windex];
1800
1801        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1802            this packet, if any */
1803         pts = 0;
1804         if (pkt->pts != AV_NOPTS_VALUE)
1805             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1806
1807         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1808                                  &got_subtitle, pkt);
1809
1810         if (got_subtitle && sp->sub.format == 0) {
1811             sp->pts = pts;
1812
1813             for (i = 0; i < sp->sub.num_rects; i++)
1814             {
1815                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1816                 {
1817                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1818                     y = RGB_TO_Y_CCIR(r, g, b);
1819                     u = RGB_TO_U_CCIR(r, g, b, 0);
1820                     v = RGB_TO_V_CCIR(r, g, b, 0);
1821                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1822                 }
1823             }
1824
1825             /* now we can update the picture count */
1826             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1827                 is->subpq_windex = 0;
1828             SDL_LockMutex(is->subpq_mutex);
1829             is->subpq_size++;
1830             SDL_UnlockMutex(is->subpq_mutex);
1831         }
1832         av_free_packet(pkt);
1833     }
1834     return 0;
1835 }
1836
1837 /* copy samples for viewing in editor window */
1838 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1839 {
1840     int size, len;
1841
1842     size = samples_size / sizeof(short);
1843     while (size > 0) {
1844         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1845         if (len > size)
1846             len = size;
1847         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1848         samples += len;
1849         is->sample_array_index += len;
1850         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1851             is->sample_array_index = 0;
1852         size -= len;
1853     }
1854 }
1855
1856 /* return the wanted number of samples to get better sync if sync_type is video
1857  * or external master clock */
1858 static int synchronize_audio(VideoState *is, int nb_samples)
1859 {
1860     int wanted_nb_samples = nb_samples;
1861
1862     /* if not master, then we try to remove or add samples to correct the clock */
1863     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1864          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1865         double diff, avg_diff;
1866         int min_nb_samples, max_nb_samples;
1867
1868         diff = get_audio_clock(is) - get_master_clock(is);
1869
1870         if (diff < AV_NOSYNC_THRESHOLD) {
1871             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1872             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1873                 /* not enough measures to have a correct estimate */
1874                 is->audio_diff_avg_count++;
1875             } else {
1876                 /* estimate the A-V difference */
1877                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1878
1879                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1880                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
1881                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1882                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1883                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
1884                 }
1885                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1886                         diff, avg_diff, wanted_nb_samples - nb_samples,
1887                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1888             }
1889         } else {
1890             /* too big difference : may be initial PTS errors, so
1891                reset A-V filter */
1892             is->audio_diff_avg_count = 0;
1893             is->audio_diff_cum       = 0;
1894         }
1895     }
1896
1897     return wanted_nb_samples;
1898 }
1899
1900 /* decode one audio frame and returns its uncompressed size */
1901 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1902 {
1903     AVPacket *pkt_temp = &is->audio_pkt_temp;
1904     AVPacket *pkt = &is->audio_pkt;
1905     AVCodecContext *dec = is->audio_st->codec;
1906     int len1, len2, data_size, resampled_data_size;
1907     int64_t dec_channel_layout;
1908     int got_frame;
1909     double pts;
1910     int new_packet = 0;
1911     int flush_complete = 0;
1912     int wanted_nb_samples;
1913
1914     for (;;) {
1915         /* NOTE: the audio packet can contain several frames */
1916         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1917             if (!is->frame) {
1918                 if (!(is->frame = avcodec_alloc_frame()))
1919                     return AVERROR(ENOMEM);
1920             } else
1921                 avcodec_get_frame_defaults(is->frame);
1922
1923             if (is->paused)
1924                 return -1;
1925
1926             if (flush_complete)
1927                 break;
1928             new_packet = 0;
1929             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1930             if (len1 < 0) {
1931                 /* if error, we skip the frame */
1932                 pkt_temp->size = 0;
1933                 break;
1934             }
1935
1936             pkt_temp->data += len1;
1937             pkt_temp->size -= len1;
1938
1939             if (!got_frame) {
1940                 /* stop sending empty packets if the decoder is finished */
1941                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1942                     flush_complete = 1;
1943                 continue;
1944             }
1945             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1946                                                    is->frame->nb_samples,
1947                                                    dec->sample_fmt, 1);
1948
1949             dec_channel_layout = (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ? dec->channel_layout : av_get_default_channel_layout(dec->channels);
1950             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1951
1952             if (dec->sample_fmt != is->audio_src.fmt ||
1953                 dec_channel_layout != is->audio_src.channel_layout ||
1954                 dec->sample_rate != is->audio_src.freq ||
1955                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1956                 if (is->swr_ctx)
1957                     swr_free(&is->swr_ctx);
1958                 is->swr_ctx = swr_alloc_set_opts(NULL,
1959                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1960                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1961                                                  0, NULL);
1962                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1963                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1964                         dec->sample_rate,
1965                         av_get_sample_fmt_name(dec->sample_fmt),
1966                         dec->channels,
1967                         is->audio_tgt.freq,
1968                         av_get_sample_fmt_name(is->audio_tgt.fmt),
1969                         is->audio_tgt.channels);
1970                     break;
1971                 }
1972                 is->audio_src.channel_layout = dec_channel_layout;
1973                 is->audio_src.channels = dec->channels;
1974                 is->audio_src.freq = dec->sample_rate;
1975                 is->audio_src.fmt = dec->sample_fmt;
1976             }
1977
1978             resampled_data_size = data_size;
1979             if (is->swr_ctx) {
1980                 const uint8_t *in[] = { is->frame->data[0] };
1981                 uint8_t *out[] = {is->audio_buf2};
1982                 if (wanted_nb_samples != is->frame->nb_samples) {
1983                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1984                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1985                         fprintf(stderr, "swr_set_compensation() failed\n");
1986                         break;
1987                     }
1988                 }
1989                 len2 = swr_convert(is->swr_ctx, out, sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt),
1990                                                 in, is->frame->nb_samples);
1991                 if (len2 < 0) {
1992                     fprintf(stderr, "audio_resample() failed\n");
1993                     break;
1994                 }
1995                 if (len2 == sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt)) {
1996                     fprintf(stderr, "warning: audio buffer is probably too small\n");
1997                     swr_init(is->swr_ctx);
1998                 }
1999                 is->audio_buf = is->audio_buf2;
2000                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2001             } else {
2002                 is->audio_buf = is->frame->data[0];
2003             }
2004
2005             /* if no pts, then compute it */
2006             pts = is->audio_clock;
2007             *pts_ptr = pts;
2008             is->audio_clock += (double)data_size /
2009                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2010 #ifdef DEBUG
2011             {
2012                 static double last_clock;
2013                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2014                        is->audio_clock - last_clock,
2015                        is->audio_clock, pts);
2016                 last_clock = is->audio_clock;
2017             }
2018 #endif
2019             return resampled_data_size;
2020         }
2021
2022         /* free the current packet */
2023         if (pkt->data)
2024             av_free_packet(pkt);
2025         memset(pkt_temp, 0, sizeof(*pkt_temp));
2026
2027         if (is->paused || is->audioq.abort_request) {
2028             return -1;
2029         }
2030
2031         /* read next packet */
2032         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2033             return -1;
2034
2035         if (pkt->data == flush_pkt.data) {
2036             avcodec_flush_buffers(dec);
2037             flush_complete = 0;
2038         }
2039
2040         *pkt_temp = *pkt;
2041
2042         /* if update the audio clock with the pts */
2043         if (pkt->pts != AV_NOPTS_VALUE) {
2044             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2045         }
2046     }
2047 }
2048
2049 /* prepare a new audio buffer */
2050 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2051 {
2052     VideoState *is = opaque;
2053     int audio_size, len1;
2054     int bytes_per_sec;
2055     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2056     double pts;
2057
2058     audio_callback_time = av_gettime();
2059
2060     while (len > 0) {
2061         if (is->audio_buf_index >= is->audio_buf_size) {
2062            audio_size = audio_decode_frame(is, &pts);
2063            if (audio_size < 0) {
2064                 /* if error, just output silence */
2065                is->audio_buf      = is->silence_buf;
2066                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2067            } else {
2068                if (is->show_mode != SHOW_MODE_VIDEO)
2069                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2070                is->audio_buf_size = audio_size;
2071            }
2072            is->audio_buf_index = 0;
2073         }
2074         len1 = is->audio_buf_size - is->audio_buf_index;
2075         if (len1 > len)
2076             len1 = len;
2077         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2078         len -= len1;
2079         stream += len1;
2080         is->audio_buf_index += len1;
2081     }
2082     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2083     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2084     /* Let's assume the audio driver that is used by SDL has two periods. */
2085     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2086     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2087 }
2088
2089 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2090 {
2091     SDL_AudioSpec wanted_spec, spec;
2092     const char *env;
2093     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2094
2095     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2096     if (env) {
2097         wanted_nb_channels = SDL_atoi(env);
2098         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2099     }
2100     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2101         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2102         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2103     }
2104     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2105     wanted_spec.freq = wanted_sample_rate;
2106     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2107         fprintf(stderr, "Invalid sample rate or channel count!\n");
2108         return -1;
2109     }
2110     wanted_spec.format = AUDIO_S16SYS;
2111     wanted_spec.silence = 0;
2112     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2113     wanted_spec.callback = sdl_audio_callback;
2114     wanted_spec.userdata = opaque;
2115     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2116         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2117         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2118         if (!wanted_spec.channels) {
2119             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2120             return -1;
2121         }
2122         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2123     }
2124     if (spec.format != AUDIO_S16SYS) {
2125         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2126         return -1;
2127     }
2128     if (spec.channels != wanted_spec.channels) {
2129         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2130         if (!wanted_channel_layout) {
2131             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2132             return -1;
2133         }
2134     }
2135
2136     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2137     audio_hw_params->freq = spec.freq;
2138     audio_hw_params->channel_layout = wanted_channel_layout;
2139     audio_hw_params->channels =  spec.channels;
2140     return spec.size;
2141 }
2142
2143 /* open a given stream. Return 0 if OK */
2144 static int stream_component_open(VideoState *is, int stream_index)
2145 {
2146     AVFormatContext *ic = is->ic;
2147     AVCodecContext *avctx;
2148     AVCodec *codec;
2149     AVDictionary *opts;
2150     AVDictionaryEntry *t = NULL;
2151
2152     if (stream_index < 0 || stream_index >= ic->nb_streams)
2153         return -1;
2154     avctx = ic->streams[stream_index]->codec;
2155
2156     codec = avcodec_find_decoder(avctx->codec_id);
2157     opts = filter_codec_opts(codec_opts, codec, ic, ic->streams[stream_index]);
2158
2159     switch(avctx->codec_type){
2160         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2161         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2162         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2163     }
2164     if (!codec)
2165         return -1;
2166
2167     avctx->workaround_bugs   = workaround_bugs;
2168     avctx->lowres            = lowres;
2169     if(avctx->lowres > codec->max_lowres){
2170         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2171                 codec->max_lowres);
2172         avctx->lowres= codec->max_lowres;
2173     }
2174     avctx->idct_algo         = idct;
2175     avctx->skip_frame        = skip_frame;
2176     avctx->skip_idct         = skip_idct;
2177     avctx->skip_loop_filter  = skip_loop_filter;
2178     avctx->error_concealment = error_concealment;
2179
2180     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2181     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2182     if(codec->capabilities & CODEC_CAP_DR1)
2183         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2184
2185     if (!av_dict_get(opts, "threads", NULL, 0))
2186         av_dict_set(&opts, "threads", "auto", 0);
2187     if (!codec ||
2188         avcodec_open2(avctx, codec, &opts) < 0)
2189         return -1;
2190     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2191         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2192         return AVERROR_OPTION_NOT_FOUND;
2193     }
2194
2195     /* prepare audio output */
2196     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2197         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2198         if (audio_hw_buf_size < 0)
2199             return -1;
2200         is->audio_hw_buf_size = audio_hw_buf_size;
2201         is->audio_tgt = is->audio_src;
2202     }
2203
2204     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2205     switch (avctx->codec_type) {
2206     case AVMEDIA_TYPE_AUDIO:
2207         is->audio_stream = stream_index;
2208         is->audio_st = ic->streams[stream_index];
2209         is->audio_buf_size  = 0;
2210         is->audio_buf_index = 0;
2211
2212         /* init averaging filter */
2213         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2214         is->audio_diff_avg_count = 0;
2215         /* since we do not have a precise anough audio fifo fullness,
2216            we correct audio sync only if larger than this threshold */
2217         is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);
2218
2219         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2220         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2221         packet_queue_start(&is->audioq);
2222         SDL_PauseAudio(0);
2223         break;
2224     case AVMEDIA_TYPE_VIDEO:
2225         is->video_stream = stream_index;
2226         is->video_st = ic->streams[stream_index];
2227
2228         packet_queue_start(&is->videoq);
2229         is->video_tid = SDL_CreateThread(video_thread, is);
2230         break;
2231     case AVMEDIA_TYPE_SUBTITLE:
2232         is->subtitle_stream = stream_index;
2233         is->subtitle_st = ic->streams[stream_index];
2234         packet_queue_start(&is->subtitleq);
2235
2236         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2237         break;
2238     default:
2239         break;
2240     }
2241     return 0;
2242 }
2243
2244 static void stream_component_close(VideoState *is, int stream_index)
2245 {
2246     AVFormatContext *ic = is->ic;
2247     AVCodecContext *avctx;
2248
2249     if (stream_index < 0 || stream_index >= ic->nb_streams)
2250         return;
2251     avctx = ic->streams[stream_index]->codec;
2252
2253     switch (avctx->codec_type) {
2254     case AVMEDIA_TYPE_AUDIO:
2255         packet_queue_abort(&is->audioq);
2256
2257         SDL_CloseAudio();
2258
2259         packet_queue_flush(&is->audioq);
2260         av_free_packet(&is->audio_pkt);
2261         if (is->swr_ctx)
2262             swr_free(&is->swr_ctx);
2263         av_freep(&is->audio_buf1);
2264         is->audio_buf = NULL;
2265         av_freep(&is->frame);
2266
2267         if (is->rdft) {
2268             av_rdft_end(is->rdft);
2269             av_freep(&is->rdft_data);
2270             is->rdft = NULL;
2271             is->rdft_bits = 0;
2272         }
2273         break;
2274     case AVMEDIA_TYPE_VIDEO:
2275         packet_queue_abort(&is->videoq);
2276
2277         /* note: we also signal this mutex to make sure we deblock the
2278            video thread in all cases */
2279         SDL_LockMutex(is->pictq_mutex);
2280         SDL_CondSignal(is->pictq_cond);
2281         SDL_UnlockMutex(is->pictq_mutex);
2282
2283         SDL_WaitThread(is->video_tid, NULL);
2284
2285         packet_queue_flush(&is->videoq);
2286         break;
2287     case AVMEDIA_TYPE_SUBTITLE:
2288         packet_queue_abort(&is->subtitleq);
2289
2290         /* note: we also signal this mutex to make sure we deblock the
2291            video thread in all cases */
2292         SDL_LockMutex(is->subpq_mutex);
2293         is->subtitle_stream_changed = 1;
2294
2295         SDL_CondSignal(is->subpq_cond);
2296         SDL_UnlockMutex(is->subpq_mutex);
2297
2298         SDL_WaitThread(is->subtitle_tid, NULL);
2299
2300         packet_queue_flush(&is->subtitleq);
2301         break;
2302     default:
2303         break;
2304     }
2305
2306     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2307     avcodec_close(avctx);
2308 #if CONFIG_AVFILTER
2309     free_buffer_pool(&is->buffer_pool);
2310 #endif
2311     switch (avctx->codec_type) {
2312     case AVMEDIA_TYPE_AUDIO:
2313         is->audio_st = NULL;
2314         is->audio_stream = -1;
2315         break;
2316     case AVMEDIA_TYPE_VIDEO:
2317         is->video_st = NULL;
2318         is->video_stream = -1;
2319         break;
2320     case AVMEDIA_TYPE_SUBTITLE:
2321         is->subtitle_st = NULL;
2322         is->subtitle_stream = -1;
2323         break;
2324     default:
2325         break;
2326     }
2327 }
2328
2329 static int decode_interrupt_cb(void *ctx)
2330 {
2331     VideoState *is = ctx;
2332     return is->abort_request;
2333 }
2334
2335 /* this thread gets the stream from the disk or the network */
2336 static int read_thread(void *arg)
2337 {
2338     VideoState *is = arg;
2339     AVFormatContext *ic = NULL;
2340     int err, i, ret;
2341     int st_index[AVMEDIA_TYPE_NB];
2342     AVPacket pkt1, *pkt = &pkt1;
2343     int eof = 0;
2344     int pkt_in_play_range = 0;
2345     AVDictionaryEntry *t;
2346     AVDictionary **opts;
2347     int orig_nb_streams;
2348
2349     memset(st_index, -1, sizeof(st_index));
2350     is->last_video_stream = is->video_stream = -1;
2351     is->last_audio_stream = is->audio_stream = -1;
2352     is->last_subtitle_stream = is->subtitle_stream = -1;
2353
2354     ic = avformat_alloc_context();
2355     ic->interrupt_callback.callback = decode_interrupt_cb;
2356     ic->interrupt_callback.opaque = is;
2357     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2358     if (err < 0) {
2359         print_error(is->filename, err);
2360         ret = -1;
2361         goto fail;
2362     }
2363     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2364         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2365         ret = AVERROR_OPTION_NOT_FOUND;
2366         goto fail;
2367     }
2368     is->ic = ic;
2369
2370     if (genpts)
2371         ic->flags |= AVFMT_FLAG_GENPTS;
2372
2373     opts = setup_find_stream_info_opts(ic, codec_opts);
2374     orig_nb_streams = ic->nb_streams;
2375
2376     err = avformat_find_stream_info(ic, opts);
2377     if (err < 0) {
2378         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2379         ret = -1;
2380         goto fail;
2381     }
2382     for (i = 0; i < orig_nb_streams; i++)
2383         av_dict_free(&opts[i]);
2384     av_freep(&opts);
2385
2386     if (ic->pb)
2387         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2388
2389     if (seek_by_bytes < 0)
2390         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2391
2392     /* if seeking requested, we execute it */
2393     if (start_time != AV_NOPTS_VALUE) {
2394         int64_t timestamp;
2395
2396         timestamp = start_time;
2397         /* add the stream start time */
2398         if (ic->start_time != AV_NOPTS_VALUE)
2399             timestamp += ic->start_time;
2400         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2401         if (ret < 0) {
2402             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2403                     is->filename, (double)timestamp / AV_TIME_BASE);
2404         }
2405     }
2406
2407     for (i = 0; i < ic->nb_streams; i++)
2408         ic->streams[i]->discard = AVDISCARD_ALL;
2409     if (!video_disable)
2410         st_index[AVMEDIA_TYPE_VIDEO] =
2411             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2412                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2413     if (!audio_disable)
2414         st_index[AVMEDIA_TYPE_AUDIO] =
2415             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2416                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2417                                 st_index[AVMEDIA_TYPE_VIDEO],
2418                                 NULL, 0);
2419     if (!video_disable)
2420         st_index[AVMEDIA_TYPE_SUBTITLE] =
2421             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2422                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2423                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2424                                  st_index[AVMEDIA_TYPE_AUDIO] :
2425                                  st_index[AVMEDIA_TYPE_VIDEO]),
2426                                 NULL, 0);
2427     if (show_status) {
2428         av_dump_format(ic, 0, is->filename, 0);
2429     }
2430
2431     is->show_mode = show_mode;
2432
2433     /* open the streams */
2434     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2435         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2436     }
2437
2438     ret = -1;
2439     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2440         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2441     }
2442     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2443     if (is->show_mode == SHOW_MODE_NONE)
2444         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2445
2446     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2447         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2448     }
2449
2450     if (is->video_stream < 0 && is->audio_stream < 0) {
2451         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2452         ret = -1;
2453         goto fail;
2454     }
2455
2456     for (;;) {
2457         if (is->abort_request)
2458             break;
2459         if (is->paused != is->last_paused) {
2460             is->last_paused = is->paused;
2461             if (is->paused)
2462                 is->read_pause_return = av_read_pause(ic);
2463             else
2464                 av_read_play(ic);
2465         }
2466 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2467         if (is->paused &&
2468                 (!strcmp(ic->iformat->name, "rtsp") ||
2469                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2470             /* wait 10 ms to avoid trying to get another packet */
2471             /* XXX: horrible */
2472             SDL_Delay(10);
2473             continue;
2474         }
2475 #endif
2476         if (is->seek_req) {
2477             int64_t seek_target = is->seek_pos;
2478             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2479             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2480 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2481 //      of the seek_pos/seek_rel variables
2482
2483             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2484             if (ret < 0) {
2485                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2486             } else {
2487                 if (is->audio_stream >= 0) {
2488                     packet_queue_flush(&is->audioq);
2489                     packet_queue_put(&is->audioq, &flush_pkt);
2490                 }
2491                 if (is->subtitle_stream >= 0) {
2492                     packet_queue_flush(&is->subtitleq);
2493                     packet_queue_put(&is->subtitleq, &flush_pkt);
2494                 }
2495                 if (is->video_stream >= 0) {
2496                     packet_queue_flush(&is->videoq);
2497                     packet_queue_put(&is->videoq, &flush_pkt);
2498                 }
2499             }
2500             is->seek_req = 0;
2501             eof = 0;
2502         }
2503
2504         /* if the queue are full, no need to read more */
2505         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2506             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2507                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2508                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2509             /* wait 10 ms */
2510             SDL_Delay(10);
2511             continue;
2512         }
2513         if (eof) {
2514             if (is->video_stream >= 0) {
2515                 av_init_packet(pkt);
2516                 pkt->data = NULL;
2517                 pkt->size = 0;
2518                 pkt->stream_index = is->video_stream;
2519                 packet_queue_put(&is->videoq, pkt);
2520             }
2521             if (is->audio_stream >= 0 &&
2522                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2523                 av_init_packet(pkt);
2524                 pkt->data = NULL;
2525                 pkt->size = 0;
2526                 pkt->stream_index = is->audio_stream;
2527                 packet_queue_put(&is->audioq, pkt);
2528             }
2529             SDL_Delay(10);
2530             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2531                 if (loop != 1 && (!loop || --loop)) {
2532                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2533                 } else if (autoexit) {
2534                     ret = AVERROR_EOF;
2535                     goto fail;
2536                 }
2537             }
2538             eof=0;
2539             continue;
2540         }
2541         ret = av_read_frame(ic, pkt);
2542         if (ret < 0) {
2543             if (ret == AVERROR_EOF || url_feof(ic->pb))
2544                 eof = 1;
2545             if (ic->pb && ic->pb->error)
2546                 break;
2547             SDL_Delay(100); /* wait for user event */
2548             continue;
2549         }
2550         /* check if packet is in play range specified by user, then queue, otherwise discard */
2551         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2552                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2553                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2554                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2555                 <= ((double)duration / 1000000);
2556         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2557             packet_queue_put(&is->audioq, pkt);
2558         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2559             packet_queue_put(&is->videoq, pkt);
2560         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2561             packet_queue_put(&is->subtitleq, pkt);
2562         } else {
2563             av_free_packet(pkt);
2564         }
2565     }
2566     /* wait until the end */
2567     while (!is->abort_request) {
2568         SDL_Delay(100);
2569     }
2570
2571     ret = 0;
2572  fail:
2573     /* close each stream */
2574     if (is->audio_stream >= 0)
2575         stream_component_close(is, is->audio_stream);
2576     if (is->video_stream >= 0)
2577         stream_component_close(is, is->video_stream);
2578     if (is->subtitle_stream >= 0)
2579         stream_component_close(is, is->subtitle_stream);
2580     if (is->ic) {
2581         avformat_close_input(&is->ic);
2582     }
2583
2584     if (ret != 0) {
2585         SDL_Event event;
2586
2587         event.type = FF_QUIT_EVENT;
2588         event.user.data1 = is;
2589         SDL_PushEvent(&event);
2590     }
2591     return 0;
2592 }
2593
2594 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2595 {
2596     VideoState *is;
2597
2598     is = av_mallocz(sizeof(VideoState));
2599     if (!is)
2600         return NULL;
2601     av_strlcpy(is->filename, filename, sizeof(is->filename));
2602     is->iformat = iformat;
2603     is->ytop    = 0;
2604     is->xleft   = 0;
2605
2606     /* start video display */
2607     is->pictq_mutex = SDL_CreateMutex();
2608     is->pictq_cond  = SDL_CreateCond();
2609
2610     is->subpq_mutex = SDL_CreateMutex();
2611     is->subpq_cond  = SDL_CreateCond();
2612
2613     packet_queue_init(&is->videoq);
2614     packet_queue_init(&is->audioq);
2615     packet_queue_init(&is->subtitleq);
2616
2617     is->av_sync_type = av_sync_type;
2618     is->read_tid     = SDL_CreateThread(read_thread, is);
2619     if (!is->read_tid) {
2620         av_free(is);
2621         return NULL;
2622     }
2623     return is;
2624 }
2625
2626 static void stream_cycle_channel(VideoState *is, int codec_type)
2627 {
2628     AVFormatContext *ic = is->ic;
2629     int start_index, stream_index;
2630     int old_index;
2631     AVStream *st;
2632
2633     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2634         start_index = is->last_video_stream;
2635         old_index = is->video_stream;
2636     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2637         start_index = is->last_audio_stream;
2638         old_index = is->audio_stream;
2639     } else {
2640         start_index = is->last_subtitle_stream;
2641         old_index = is->subtitle_stream;
2642     }
2643     stream_index = start_index;
2644     for (;;) {
2645         if (++stream_index >= is->ic->nb_streams)
2646         {
2647             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2648             {
2649                 stream_index = -1;
2650                 is->last_subtitle_stream = -1;
2651                 goto the_end;
2652             }
2653             if (start_index == -1)
2654                 return;
2655             stream_index = 0;
2656         }
2657         if (stream_index == start_index)
2658             return;
2659         st = ic->streams[stream_index];
2660         if (st->codec->codec_type == codec_type) {
2661             /* check that parameters are OK */
2662             switch (codec_type) {
2663             case AVMEDIA_TYPE_AUDIO:
2664                 if (st->codec->sample_rate != 0 &&
2665                     st->codec->channels != 0)
2666                     goto the_end;
2667                 break;
2668             case AVMEDIA_TYPE_VIDEO:
2669             case AVMEDIA_TYPE_SUBTITLE:
2670                 goto the_end;
2671             default:
2672                 break;
2673             }
2674         }
2675     }
2676  the_end:
2677     stream_component_close(is, old_index);
2678     stream_component_open(is, stream_index);
2679 }
2680
2681
2682 static void toggle_full_screen(VideoState *is)
2683 {
2684 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2685     /* OS X needs to reallocate the SDL overlays */
2686     int i;
2687     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2688         is->pictq[i].reallocate = 1;
2689 #endif
2690     is_full_screen = !is_full_screen;
2691     video_open(is, 1);
2692 }
2693
2694 static void toggle_pause(VideoState *is)
2695 {
2696     stream_toggle_pause(is);
2697     is->step = 0;
2698 }
2699
2700 static void step_to_next_frame(VideoState *is)
2701 {
2702     /* if the stream is paused unpause it, then step */
2703     if (is->paused)
2704         stream_toggle_pause(is);
2705     is->step = 1;
2706 }
2707
2708 static void toggle_audio_display(VideoState *is)
2709 {
2710     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2711     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2712     fill_rectangle(screen,
2713                 is->xleft, is->ytop, is->width, is->height,
2714                 bgcolor);
2715     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2716 }
2717
2718 /* handle an event sent by the GUI */
2719 static void event_loop(VideoState *cur_stream)
2720 {
2721     SDL_Event event;
2722     double incr, pos, frac;
2723
2724     for (;;) {
2725         double x;
2726         SDL_WaitEvent(&event);
2727         switch (event.type) {
2728         case SDL_KEYDOWN:
2729             if (exit_on_keydown) {
2730                 do_exit(cur_stream);
2731                 break;
2732             }
2733             switch (event.key.keysym.sym) {
2734             case SDLK_ESCAPE:
2735             case SDLK_q:
2736                 do_exit(cur_stream);
2737                 break;
2738             case SDLK_f:
2739                 toggle_full_screen(cur_stream);
2740                 cur_stream->force_refresh = 1;
2741                 break;
2742             case SDLK_p:
2743             case SDLK_SPACE:
2744                 toggle_pause(cur_stream);
2745                 break;
2746             case SDLK_s: // S: Step to next frame
2747                 step_to_next_frame(cur_stream);
2748                 break;
2749             case SDLK_a:
2750                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2751                 break;
2752             case SDLK_v:
2753                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2754                 break;
2755             case SDLK_t:
2756                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2757                 break;
2758             case SDLK_w:
2759                 toggle_audio_display(cur_stream);
2760                 cur_stream->force_refresh = 1;
2761                 break;
2762             case SDLK_PAGEUP:
2763                 incr = 600.0;
2764                 goto do_seek;
2765             case SDLK_PAGEDOWN:
2766                 incr = -600.0;
2767                 goto do_seek;
2768             case SDLK_LEFT:
2769                 incr = -10.0;
2770                 goto do_seek;
2771             case SDLK_RIGHT:
2772                 incr = 10.0;
2773                 goto do_seek;
2774             case SDLK_UP:
2775                 incr = 60.0;
2776                 goto do_seek;
2777             case SDLK_DOWN:
2778                 incr = -60.0;
2779             do_seek:
2780                     if (seek_by_bytes) {
2781                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2782                             pos = cur_stream->video_current_pos;
2783                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2784                             pos = cur_stream->audio_pkt.pos;
2785                         } else
2786                             pos = avio_tell(cur_stream->ic->pb);
2787                         if (cur_stream->ic->bit_rate)
2788                             incr *= cur_stream->ic->bit_rate / 8.0;
2789                         else
2790                             incr *= 180000.0;
2791                         pos += incr;
2792                         stream_seek(cur_stream, pos, incr, 1);
2793                     } else {
2794                         pos = get_master_clock(cur_stream);
2795                         pos += incr;
2796                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2797                     }
2798                 break;
2799             default:
2800                 break;
2801             }
2802             break;
2803         case SDL_VIDEOEXPOSE:
2804             cur_stream->force_refresh = 1;
2805             break;
2806         case SDL_MOUSEBUTTONDOWN:
2807             if (exit_on_mousedown) {
2808                 do_exit(cur_stream);
2809                 break;
2810             }
2811         case SDL_MOUSEMOTION:
2812             if (event.type == SDL_MOUSEBUTTONDOWN) {
2813                 x = event.button.x;
2814             } else {
2815                 if (event.motion.state != SDL_PRESSED)
2816                     break;
2817                 x = event.motion.x;
2818             }
2819                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2820                     uint64_t size =  avio_size(cur_stream->ic->pb);
2821                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2822                 } else {
2823                     int64_t ts;
2824                     int ns, hh, mm, ss;
2825                     int tns, thh, tmm, tss;
2826                     tns  = cur_stream->ic->duration / 1000000LL;
2827                     thh  = tns / 3600;
2828                     tmm  = (tns % 3600) / 60;
2829                     tss  = (tns % 60);
2830                     frac = x / cur_stream->width;
2831                     ns   = frac * tns;
2832                     hh   = ns / 3600;
2833                     mm   = (ns % 3600) / 60;
2834                     ss   = (ns % 60);
2835                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2836                             hh, mm, ss, thh, tmm, tss);
2837                     ts = frac * cur_stream->ic->duration;
2838                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2839                         ts += cur_stream->ic->start_time;
2840                     stream_seek(cur_stream, ts, 0, 0);
2841                 }
2842             break;
2843         case SDL_VIDEORESIZE:
2844                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2845                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2846                 screen_width  = cur_stream->width  = event.resize.w;
2847                 screen_height = cur_stream->height = event.resize.h;
2848                 cur_stream->force_refresh = 1;
2849             break;
2850         case SDL_QUIT:
2851         case FF_QUIT_EVENT:
2852             do_exit(cur_stream);
2853             break;
2854         case FF_ALLOC_EVENT:
2855             alloc_picture(event.user.data1);
2856             break;
2857         case FF_REFRESH_EVENT:
2858             video_refresh(event.user.data1);
2859             cur_stream->refresh = 0;
2860             break;
2861         default:
2862             break;
2863         }
2864     }
2865 }
2866
2867 static int opt_frame_size(const char *opt, const char *arg)
2868 {
2869     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2870     return opt_default("video_size", arg);
2871 }
2872
2873 static int opt_width(const char *opt, const char *arg)
2874 {
2875     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2876     return 0;
2877 }
2878
2879 static int opt_height(const char *opt, const char *arg)
2880 {
2881     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2882     return 0;
2883 }
2884
2885 static int opt_format(const char *opt, const char *arg)
2886 {
2887     file_iformat = av_find_input_format(arg);
2888     if (!file_iformat) {
2889         fprintf(stderr, "Unknown input format: %s\n", arg);
2890         return AVERROR(EINVAL);
2891     }
2892     return 0;
2893 }
2894
2895 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2896 {
2897     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2898     return opt_default("pixel_format", arg);
2899 }
2900
2901 static int opt_sync(const char *opt, const char *arg)
2902 {
2903     if (!strcmp(arg, "audio"))
2904         av_sync_type = AV_SYNC_AUDIO_MASTER;
2905     else if (!strcmp(arg, "video"))
2906         av_sync_type = AV_SYNC_VIDEO_MASTER;
2907     else if (!strcmp(arg, "ext"))
2908         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2909     else {
2910         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2911         exit(1);
2912     }
2913     return 0;
2914 }
2915
2916 static int opt_seek(const char *opt, const char *arg)
2917 {
2918     start_time = parse_time_or_die(opt, arg, 1);
2919     return 0;
2920 }
2921
2922 static int opt_duration(const char *opt, const char *arg)
2923 {
2924     duration = parse_time_or_die(opt, arg, 1);
2925     return 0;
2926 }
2927
2928 static int opt_show_mode(const char *opt, const char *arg)
2929 {
2930     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2931                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2932                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2933                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2934     return 0;
2935 }
2936
2937 static void opt_input_file(void *optctx, const char *filename)
2938 {
2939     if (input_filename) {
2940         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2941                 filename, input_filename);
2942         exit_program(1);
2943     }
2944     if (!strcmp(filename, "-"))
2945         filename = "pipe:";
2946     input_filename = filename;
2947 }
2948
2949 static int opt_codec(void *o, const char *opt, const char *arg)
2950 {
2951     switch(opt[strlen(opt)-1]){
2952     case 'a' :    audio_codec_name = arg; break;
2953     case 's' : subtitle_codec_name = arg; break;
2954     case 'v' :    video_codec_name = arg; break;
2955     }
2956     return 0;
2957 }
2958
2959 static int dummy;
2960
2961 static const OptionDef options[] = {
2962 #include "cmdutils_common_opts.h"
2963     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2964     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2965     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2966     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2967     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2968     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2969     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2970     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2971     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2972     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2973     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2974     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2975     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2976     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2977     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2978     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2979     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2980     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2981     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2982     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2983     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2984     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2985     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2986     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2987     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2988     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2989     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2990     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2991     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2992     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2993     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
2994     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
2995     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
2996 #if CONFIG_AVFILTER
2997     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
2998 #endif
2999     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
3000     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3001     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
3002     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
3003     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
3004     { NULL, },
3005 };
3006
3007 static void show_usage(void)
3008 {
3009     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3010     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3011     av_log(NULL, AV_LOG_INFO, "\n");
3012 }
3013
3014 static int opt_help(const char *opt, const char *arg)
3015 {
3016     av_log_set_callback(log_callback_help);
3017     show_usage();
3018     show_help_options(options, "Main options:\n",
3019                       OPT_EXPERT, 0);
3020     show_help_options(options, "\nAdvanced options:\n",
3021                       OPT_EXPERT, OPT_EXPERT);
3022     printf("\n");
3023     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3024     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3025 #if !CONFIG_AVFILTER
3026     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3027 #endif
3028     printf("\nWhile playing:\n"
3029            "q, ESC              quit\n"
3030            "f                   toggle full screen\n"
3031            "p, SPC              pause\n"
3032            "a                   cycle audio channel\n"
3033            "v                   cycle video channel\n"
3034            "t                   cycle subtitle channel\n"
3035            "w                   show audio waves\n"
3036            "s                   activate frame-step mode\n"
3037            "left/right          seek backward/forward 10 seconds\n"
3038            "down/up             seek backward/forward 1 minute\n"
3039            "page down/page up   seek backward/forward 10 minutes\n"
3040            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3041            );
3042     return 0;
3043 }
3044
3045 static int lockmgr(void **mtx, enum AVLockOp op)
3046 {
3047    switch(op) {
3048       case AV_LOCK_CREATE:
3049           *mtx = SDL_CreateMutex();
3050           if(!*mtx)
3051               return 1;
3052           return 0;
3053       case AV_LOCK_OBTAIN:
3054           return !!SDL_LockMutex(*mtx);
3055       case AV_LOCK_RELEASE:
3056           return !!SDL_UnlockMutex(*mtx);
3057       case AV_LOCK_DESTROY:
3058           SDL_DestroyMutex(*mtx);
3059           return 0;
3060    }
3061    return 1;
3062 }
3063
3064 /* Called from the main */
3065 int main(int argc, char **argv)
3066 {
3067     int flags;
3068     VideoState *is;
3069     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3070
3071     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3072     parse_loglevel(argc, argv, options);
3073
3074     /* register all codecs, demux and protocols */
3075     avcodec_register_all();
3076 #if CONFIG_AVDEVICE
3077     avdevice_register_all();
3078 #endif
3079 #if CONFIG_AVFILTER
3080     avfilter_register_all();
3081 #endif
3082     av_register_all();
3083     avformat_network_init();
3084
3085     init_opts();
3086
3087     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3088     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3089
3090     show_banner(argc, argv, options);
3091
3092     parse_options(NULL, argc, argv, options, opt_input_file);
3093
3094     if (!input_filename) {
3095         show_usage();
3096         fprintf(stderr, "An input file must be specified\n");
3097         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3098         exit(1);
3099     }
3100
3101     if (display_disable) {
3102         video_disable = 1;
3103     }
3104     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3105     if (audio_disable)
3106         flags &= ~SDL_INIT_AUDIO;
3107     if (display_disable)
3108         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3109 #if !defined(__MINGW32__) && !defined(__APPLE__)
3110     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3111 #endif
3112     if (SDL_Init (flags)) {
3113         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3114         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3115         exit(1);
3116     }
3117
3118     if (!display_disable) {
3119 #if HAVE_SDL_VIDEO_SIZE
3120         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3121         fs_screen_width = vi->current_w;
3122         fs_screen_height = vi->current_h;
3123 #endif
3124     }
3125
3126     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3127     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3128     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3129
3130     if (av_lockmgr_register(lockmgr)) {
3131         fprintf(stderr, "Could not initialize lock manager!\n");
3132         do_exit(NULL);
3133     }
3134
3135     av_init_packet(&flush_pkt);
3136     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3137
3138     is = stream_open(input_filename, file_iformat);
3139     if (!is) {
3140         fprintf(stderr, "Failed to initialize VideoState!\n");
3141         do_exit(NULL);
3142     }
3143
3144     event_loop(is);
3145
3146     /* never returns */
3147
3148     return 0;
3149 }