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         avfilter_unref_bufferp(&vp->picref);
 912 #endif
 913         if (vp->bmp) {
 914             SDL_FreeYUVOverlay(vp->bmp);
 915             vp->bmp = NULL;
 916         }
 917     }
 918     SDL_DestroyMutex(is->pictq_mutex);
 919     SDL_DestroyCond(is->pictq_cond);
 920     SDL_DestroyMutex(is->subpq_mutex);
 921     SDL_DestroyCond(is->subpq_cond);
 922 #if !CONFIG_AVFILTER
 923     if (is->img_convert_ctx)
 924         sws_freeContext(is->img_convert_ctx);
 925 #endif
 926     av_free(is);
 927 }
 928
 929 static void do_exit(VideoState *is)
 930 {
 931     if (is) {
 932         stream_close(is);
 933     }
 934     av_lockmgr_register(NULL);
 935     uninit_opts();
 936 #if CONFIG_AVFILTER
 937     avfilter_uninit();
 938 #endif
 939     avformat_network_deinit();
 940     if (show_status)
 941         printf("\n");
 942     SDL_Quit();
 943     av_log(NULL, AV_LOG_QUIET, "%s", "");
 944     exit(0);
 945 }
 946
 947 static void sigterm_handler(int sig)
 948 {
 949     exit(123);
 950 }
 951
 952 static int video_open(VideoState *is, int force_set_video_mode)
 953 {
 954     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 955     int w,h;
 956     VideoPicture *vp = &is->pictq[is->pictq_rindex];
 957
 958     if (is_full_screen) flags |= SDL_FULLSCREEN;
 959     else                flags |= SDL_RESIZABLE;
 960
 961     if (is_full_screen && fs_screen_width) {
 962         w = fs_screen_width;
 963         h = fs_screen_height;
 964     } else if (!is_full_screen && screen_width) {
 965         w = screen_width;
 966         h = screen_height;
 967     } else if (vp->width) {
 968         w = vp->width;
 969         h = vp->height;
 970     } else {
 971         w = 640;
 972         h = 480;
 973     }
 974     if (screen && is->width == screen->w && screen->w == w
 975        && is->height== screen->h && screen->h == h && !force_set_video_mode)
 976         return 0;
 977     screen = SDL_SetVideoMode(w, h, 0, flags);
 978     if (!screen) {
 979         fprintf(stderr, "SDL: could not set video mode - exiting\n");
 980         do_exit(is);
 981     }
 982     if (!window_title)
 983         window_title = input_filename;
 984     SDL_WM_SetCaption(window_title, window_title);
 985
 986     is->width  = screen->w;
 987     is->height = screen->h;
 988
 989     return 0;
 990 }
 991
 992 /* display the current picture, if any */
 993 static void video_display(VideoState *is)
 994 {
 995     if (!screen)
 996         video_open(is, 0);
 997     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
 998         video_audio_display(is);
 999     else if (is->video_st)
1000         video_image_display(is);
1001 }
1002
1003 static int refresh_thread(void *opaque)
1004 {
1005     VideoState *is= opaque;
1006     while (!is->abort_request) {
1007         SDL_Event event;
1008         event.type = FF_REFRESH_EVENT;
1009         event.user.data1 = opaque;
1010         if (!is->refresh && (!is->paused || is->force_refresh)) {
1011             is->refresh = 1;
1012             SDL_PushEvent(&event);
1013         }
1014         //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
1015         av_usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
1016     }
1017     return 0;
1018 }
1019
1020 /* get the current audio clock value */
1021 static double get_audio_clock(VideoState *is)
1022 {
1023     if (is->paused) {
1024         return is->audio_current_pts;
1025     } else {
1026         return is->audio_current_pts_drift + av_gettime() / 1000000.0;
1027     }
1028 }
1029
1030 /* get the current video clock value */
1031 static double get_video_clock(VideoState *is)
1032 {
1033     if (is->paused) {
1034         return is->video_current_pts;
1035     } else {
1036         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1037     }
1038 }
1039
1040 /* get the current external clock value */
1041 static double get_external_clock(VideoState *is)
1042 {
1043     int64_t ti;
1044     ti = av_gettime();
1045     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1046 }
1047
1048 /* get the current master clock value */
1049 static double get_master_clock(VideoState *is)
1050 {
1051     double val;
1052
1053     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1054         if (is->video_st)
1055             val = get_video_clock(is);
1056         else
1057             val = get_audio_clock(is);
1058     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1059         if (is->audio_st)
1060             val = get_audio_clock(is);
1061         else
1062             val = get_video_clock(is);
1063     } else {
1064         val = get_external_clock(is);
1065     }
1066     return val;
1067 }
1068
1069 /* seek in the stream */
1070 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1071 {
1072     if (!is->seek_req) {
1073         is->seek_pos = pos;
1074         is->seek_rel = rel;
1075         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1076         if (seek_by_bytes)
1077             is->seek_flags |= AVSEEK_FLAG_BYTE;
1078         is->seek_req = 1;
1079     }
1080 }
1081
1082 /* pause or resume the video */
1083 static void stream_toggle_pause(VideoState *is)
1084 {
1085     if (is->paused) {
1086         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1087         if (is->read_pause_return != AVERROR(ENOSYS)) {
1088             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1089         }
1090         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1091     }
1092     is->paused = !is->paused;
1093 }
1094
1095 static double compute_target_delay(double delay, VideoState *is)
1096 {
1097     double sync_threshold, diff;
1098
1099     /* update delay to follow master synchronisation source */
1100     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1101          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1102         /* if video is slave, we try to correct big delays by
1103            duplicating or deleting a frame */
1104         diff = get_video_clock(is) - get_master_clock(is);
1105
1106         /* skip or repeat frame. We take into account the
1107            delay to compute the threshold. I still don't know
1108            if it is the best guess */
1109         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1110         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1111             if (diff <= -sync_threshold)
1112                 delay = 0;
1113             else if (diff >= sync_threshold)
1114                 delay = 2 * delay;
1115         }
1116     }
1117
1118     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1119             delay, -diff);
1120
1121     return delay;
1122 }
1123
1124 static void pictq_next_picture(VideoState *is) {
1125     /* update queue size and signal for next picture */
1126     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1127         is->pictq_rindex = 0;
1128
1129     SDL_LockMutex(is->pictq_mutex);
1130     is->pictq_size--;
1131     SDL_CondSignal(is->pictq_cond);
1132     SDL_UnlockMutex(is->pictq_mutex);
1133 }
1134
1135 static void update_video_pts(VideoState *is, double pts, int64_t pos) {
1136     double time = av_gettime() / 1000000.0;
1137     /* update current video pts */
1138     is->video_current_pts = pts;
1139     is->video_current_pts_drift = is->video_current_pts - time;
1140     is->video_current_pos = pos;
1141     is->frame_last_pts = pts;
1142 }
1143
1144 /* called to display each frame */
1145 static void video_refresh(void *opaque)
1146 {
1147     VideoState *is = opaque;
1148     VideoPicture *vp;
1149     double time;
1150
1151     SubPicture *sp, *sp2;
1152
1153     if (is->video_st) {
1154 retry:
1155         if (is->pictq_size == 0) {
1156             SDL_LockMutex(is->pictq_mutex);
1157             if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
1158                 update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos);
1159                 is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1160             }
1161             SDL_UnlockMutex(is->pictq_mutex);
1162             // nothing to do, no picture to display in the que
1163         } else {
1164             double last_duration, duration, delay;
1165             /* dequeue the picture */
1166             vp = &is->pictq[is->pictq_rindex];
1167
1168             if (vp->skip) {
1169                 pictq_next_picture(is);
1170                 goto retry;
1171             }
1172
1173             if (is->paused)
1174                 goto display;
1175
1176             /* compute nominal last_duration */
1177             last_duration = vp->pts - is->frame_last_pts;
1178             if (last_duration > 0 && last_duration < 10.0) {
1179                 /* if duration of the last frame was sane, update last_duration in video state */
1180                 is->frame_last_duration = last_duration;
1181             }
1182             delay = compute_target_delay(is->frame_last_duration, is);
1183
1184             time= av_gettime()/1000000.0;
1185             if (time < is->frame_timer + delay)
1186                 return;
1187
1188             if (delay > 0)
1189                 is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
1190
1191             SDL_LockMutex(is->pictq_mutex);
1192             update_video_pts(is, vp->pts, vp->pos);
1193             SDL_UnlockMutex(is->pictq_mutex);
1194
1195             if (is->pictq_size > 1) {
1196                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1197                 duration = nextvp->pts - vp->pts;
1198                 if((framedrop>0 || (framedrop && is->audio_st)) && time > is->frame_timer + duration){
1199                     is->frame_drops_late++;
1200                     pictq_next_picture(is);
1201                     goto retry;
1202                 }
1203             }
1204
1205             if (is->subtitle_st) {
1206                 if (is->subtitle_stream_changed) {
1207                     SDL_LockMutex(is->subpq_mutex);
1208
1209                     while (is->subpq_size) {
1210                         free_subpicture(&is->subpq[is->subpq_rindex]);
1211
1212                         /* update queue size and signal for next picture */
1213                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1214                             is->subpq_rindex = 0;
1215
1216                         is->subpq_size--;
1217                     }
1218                     is->subtitle_stream_changed = 0;
1219
1220                     SDL_CondSignal(is->subpq_cond);
1221                     SDL_UnlockMutex(is->subpq_mutex);
1222                 } else {
1223                     if (is->subpq_size > 0) {
1224                         sp = &is->subpq[is->subpq_rindex];
1225
1226                         if (is->subpq_size > 1)
1227                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1228                         else
1229                             sp2 = NULL;
1230
1231                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1232                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1233                         {
1234                             free_subpicture(sp);
1235
1236                             /* update queue size and signal for next picture */
1237                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1238                                 is->subpq_rindex = 0;
1239
1240                             SDL_LockMutex(is->subpq_mutex);
1241                             is->subpq_size--;
1242                             SDL_CondSignal(is->subpq_cond);
1243                             SDL_UnlockMutex(is->subpq_mutex);
1244                         }
1245                     }
1246                 }
1247             }
1248
1249 display:
1250             /* display picture */
1251             if (!display_disable)
1252                 video_display(is);
1253
1254             if (!is->paused)
1255                 pictq_next_picture(is);
1256         }
1257     } else if (is->audio_st) {
1258         /* draw the next audio frame */
1259
1260         /* if only audio stream, then display the audio bars (better
1261            than nothing, just to test the implementation */
1262
1263         /* display picture */
1264         if (!display_disable)
1265             video_display(is);
1266     }
1267     is->force_refresh = 0;
1268     if (show_status) {
1269         static int64_t last_time;
1270         int64_t cur_time;
1271         int aqsize, vqsize, sqsize;
1272         double av_diff;
1273
1274         cur_time = av_gettime();
1275         if (!last_time || (cur_time - last_time) >= 30000) {
1276             aqsize = 0;
1277             vqsize = 0;
1278             sqsize = 0;
1279             if (is->audio_st)
1280                 aqsize = is->audioq.size;
1281             if (is->video_st)
1282                 vqsize = is->videoq.size;
1283             if (is->subtitle_st)
1284                 sqsize = is->subtitleq.size;
1285             av_diff = 0;
1286             if (is->audio_st && is->video_st)
1287                 av_diff = get_audio_clock(is) - get_video_clock(is);
1288             printf("%7.2f A-V:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1289                    get_master_clock(is),
1290                    av_diff,
1291                    is->frame_drops_early + is->frame_drops_late,
1292                    aqsize / 1024,
1293                    vqsize / 1024,
1294                    sqsize,
1295                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1296                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1297             fflush(stdout);
1298             last_time = cur_time;
1299         }
1300     }
1301 }
1302
1303 /* allocate a picture (needs to do that in main thread to avoid
1304    potential locking problems */
1305 static void alloc_picture(AllocEventProps *event_props)
1306 {
1307     VideoState *is = event_props->is;
1308     AVFrame *frame = event_props->frame;
1309     VideoPicture *vp;
1310
1311     vp = &is->pictq[is->pictq_windex];
1312
1313     if (vp->bmp)
1314         SDL_FreeYUVOverlay(vp->bmp);
1315
1316 #if CONFIG_AVFILTER
1317     avfilter_unref_bufferp(&vp->picref);
1318 #endif
1319
1320     vp->width   = frame->width;
1321     vp->height  = frame->height;
1322
1323     video_open(event_props->is, 0);
1324
1325     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1326                                    SDL_YV12_OVERLAY,
1327                                    screen);
1328     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1329         /* SDL allocates a buffer smaller than requested if the video
1330          * overlay hardware is unable to support the requested size. */
1331         fprintf(stderr, "Error: the video system does not support an image\n"
1332                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1333                         "to reduce the image size.\n", vp->width, vp->height );
1334         do_exit(is);
1335     }
1336
1337     SDL_LockMutex(is->pictq_mutex);
1338     vp->allocated = 1;
1339     SDL_CondSignal(is->pictq_cond);
1340     SDL_UnlockMutex(is->pictq_mutex);
1341 }
1342
1343 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1344 {
1345     VideoPicture *vp;
1346     double frame_delay, pts = pts1;
1347
1348     /* compute the exact PTS for the picture if it is omitted in the stream
1349      * pts1 is the dts of the pkt / pts of the frame */
1350     if (pts != 0) {
1351         /* update video clock with pts, if present */
1352         is->video_clock = pts;
1353     } else {
1354         pts = is->video_clock;
1355     }
1356     /* update video clock for next frame */
1357     frame_delay = av_q2d(is->video_st->codec->time_base);
1358     /* for MPEG2, the frame can be repeated, so we update the
1359        clock accordingly */
1360     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1361     is->video_clock += frame_delay;
1362
1363 #if defined(DEBUG_SYNC) && 0
1364     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1365            av_get_picture_type_char(src_frame->pict_type), pts, pts1);
1366 #endif
1367
1368     /* wait until we have space to put a new picture */
1369     SDL_LockMutex(is->pictq_mutex);
1370
1371     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1372            !is->videoq.abort_request) {
1373         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1374     }
1375     SDL_UnlockMutex(is->pictq_mutex);
1376
1377     if (is->videoq.abort_request)
1378         return -1;
1379
1380     vp = &is->pictq[is->pictq_windex];
1381
1382     /* alloc or resize hardware picture buffer */
1383     if (!vp->bmp || vp->reallocate ||
1384         vp->width  != src_frame->width ||
1385         vp->height != src_frame->height) {
1386         SDL_Event event;
1387         AllocEventProps event_props;
1388
1389         event_props.frame = src_frame;
1390         event_props.is = is;
1391
1392         vp->allocated  = 0;
1393         vp->reallocate = 0;
1394
1395         /* the allocation must be done in the main thread to avoid
1396            locking problems. We wait in this block for the event to complete,
1397            so we can pass a pointer to event_props to it. */
1398         event.type = FF_ALLOC_EVENT;
1399         event.user.data1 = &event_props;
1400         SDL_PushEvent(&event);
1401
1402         /* wait until the picture is allocated */
1403         SDL_LockMutex(is->pictq_mutex);
1404         while (!vp->allocated && !is->videoq.abort_request) {
1405             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1406         }
1407         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1408         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1409             while (!vp->allocated) {
1410                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1411             }
1412         }
1413         SDL_UnlockMutex(is->pictq_mutex);
1414
1415         if (is->videoq.abort_request)
1416             return -1;
1417     }
1418
1419     /* if the frame is not skipped, then display it */
1420     if (vp->bmp) {
1421         AVPicture pict = { { 0 } };
1422 #if CONFIG_AVFILTER
1423         avfilter_unref_bufferp(&vp->picref);
1424         vp->picref = src_frame->opaque;
1425 #endif
1426
1427         /* get a pointer on the bitmap */
1428         SDL_LockYUVOverlay (vp->bmp);
1429
1430         pict.data[0] = vp->bmp->pixels[0];
1431         pict.data[1] = vp->bmp->pixels[2];
1432         pict.data[2] = vp->bmp->pixels[1];
1433
1434         pict.linesize[0] = vp->bmp->pitches[0];
1435         pict.linesize[1] = vp->bmp->pitches[2];
1436         pict.linesize[2] = vp->bmp->pitches[1];
1437
1438 #if CONFIG_AVFILTER
1439         // FIXME use direct rendering
1440         av_picture_copy(&pict, (AVPicture *)src_frame,
1441                         src_frame->format, vp->width, vp->height);
1442         vp->sample_aspect_ratio = vp->picref->video->sample_aspect_ratio;
1443 #else
1444         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1445         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1446             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1447             PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1448         if (is->img_convert_ctx == NULL) {
1449             fprintf(stderr, "Cannot initialize the conversion context\n");
1450             exit(1);
1451         }
1452         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1453                   0, vp->height, pict.data, pict.linesize);
1454         vp->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, src_frame);
1455 #endif
1456         /* update the bitmap content */
1457         SDL_UnlockYUVOverlay(vp->bmp);
1458
1459         vp->pts = pts;
1460         vp->pos = pos;
1461         vp->skip = 0;
1462
1463         /* now we can update the picture count */
1464         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1465             is->pictq_windex = 0;
1466         SDL_LockMutex(is->pictq_mutex);
1467         is->pictq_size++;
1468         SDL_UnlockMutex(is->pictq_mutex);
1469     }
1470     return 0;
1471 }
1472
1473 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1474 {
1475     int got_picture, i;
1476
1477     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1478         return -1;
1479
1480     if (pkt->data == flush_pkt.data) {
1481         avcodec_flush_buffers(is->video_st->codec);
1482
1483         SDL_LockMutex(is->pictq_mutex);
1484         // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1485         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1486             is->pictq[i].skip = 1;
1487         }
1488         while (is->pictq_size && !is->videoq.abort_request) {
1489             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1490         }
1491         is->video_current_pos = -1;
1492         is->frame_last_pts = AV_NOPTS_VALUE;
1493         is->frame_last_duration = 0;
1494         is->frame_timer = (double)av_gettime() / 1000000.0;
1495         is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1496         SDL_UnlockMutex(is->pictq_mutex);
1497
1498         return 0;
1499     }
1500
1501     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1502         return 0;
1503
1504     if (got_picture) {
1505         int ret = 1;
1506
1507         if (decoder_reorder_pts == -1) {
1508             *pts = av_frame_get_best_effort_timestamp(frame);
1509         } else if (decoder_reorder_pts) {
1510             *pts = frame->pkt_pts;
1511         } else {
1512             *pts = frame->pkt_dts;
1513         }
1514
1515         if (*pts == AV_NOPTS_VALUE) {
1516             *pts = 0;
1517         }
1518
1519         if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK) &&
1520              (framedrop>0 || (framedrop && is->audio_st))) {
1521             SDL_LockMutex(is->pictq_mutex);
1522             if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
1523                 double clockdiff = get_video_clock(is) - get_master_clock(is);
1524                 double dpts = av_q2d(is->video_st->time_base) * *pts;
1525                 double ptsdiff = dpts - is->frame_last_pts;
1526                 if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
1527                      ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
1528                      clockdiff + ptsdiff - is->frame_last_filter_delay < 0) {
1529                     is->frame_last_dropped_pos = pkt->pos;
1530                     is->frame_last_dropped_pts = dpts;
1531                     is->frame_drops_early++;
1532                     ret = 0;
1533                 }
1534             }
1535             SDL_UnlockMutex(is->pictq_mutex);
1536         }
1537
1538         return ret;
1539     }
1540     return 0;
1541 }
1542
1543 #if CONFIG_AVFILTER
1544 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1545                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1546 {
1547     int ret;
1548     AVFilterInOut *outputs = NULL, *inputs = NULL;
1549
1550     if (filtergraph) {
1551         outputs = avfilter_inout_alloc();
1552         inputs  = avfilter_inout_alloc();
1553         if (!outputs || !inputs) {
1554             ret = AVERROR(ENOMEM);
1555             goto fail;
1556         }
1557
1558         outputs->name       = av_strdup("in");
1559         outputs->filter_ctx = source_ctx;
1560         outputs->pad_idx    = 0;
1561         outputs->next       = NULL;
1562
1563         inputs->name        = av_strdup("out");
1564         inputs->filter_ctx  = sink_ctx;
1565         inputs->pad_idx     = 0;
1566         inputs->next        = NULL;
1567
1568         if ((ret = avfilter_graph_parse(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1569             goto fail;
1570     } else {
1571         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1572             goto fail;
1573     }
1574
1575     return avfilter_graph_config(graph, NULL);
1576 fail:
1577     avfilter_inout_free(&outputs);
1578     avfilter_inout_free(&inputs);
1579     return ret;
1580 }
1581
1582 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1583 {
1584     static const enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1585     char sws_flags_str[128];
1586     char buffersrc_args[256];
1587     int ret;
1588     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1589     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1590     AVCodecContext *codec = is->video_st->codec;
1591
1592     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1593     graph->scale_sws_opts = av_strdup(sws_flags_str);
1594
1595     snprintf(buffersrc_args, sizeof(buffersrc_args),
1596              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1597              codec->width, codec->height, codec->pix_fmt,
1598              is->video_st->time_base.num, is->video_st->time_base.den,
1599              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1600
1601     if ((ret = avfilter_graph_create_filter(&filt_src,
1602                                             avfilter_get_by_name("buffer"),
1603                                             "ffplay_buffer", buffersrc_args, NULL,
1604                                             graph)) < 0)
1605         return ret;
1606
1607     buffersink_params->pixel_fmts = pix_fmts;
1608     ret = avfilter_graph_create_filter(&filt_out,
1609                                        avfilter_get_by_name("buffersink"),
1610                                        "ffplay_buffersink", NULL, buffersink_params, graph);
1611     av_freep(&buffersink_params);
1612     if (ret < 0)
1613         return ret;
1614
1615     if ((ret = avfilter_graph_create_filter(&filt_format,
1616                                             avfilter_get_by_name("format"),
1617                                             "format", "yuv420p", NULL, graph)) < 0)
1618         return ret;
1619     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1620         return ret;
1621
1622     if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_format)) < 0)
1623         return ret;
1624
1625     is->in_video_filter  = filt_src;
1626     is->out_video_filter = filt_out;
1627
1628     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1629         is->use_dr1 = 1;
1630         codec->get_buffer     = codec_get_buffer;
1631         codec->release_buffer = codec_release_buffer;
1632         codec->opaque         = &is->buffer_pool;
1633     }
1634
1635     return ret;
1636 }
1637
1638 #endif  /* CONFIG_AVFILTER */
1639
1640 static int video_thread(void *arg)
1641 {
1642     VideoState *is = arg;
1643     AVFrame *frame = avcodec_alloc_frame();
1644     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1645     double pts;
1646     int ret;
1647
1648 #if CONFIG_AVFILTER
1649     AVFilterGraph *graph = avfilter_graph_alloc();
1650     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1651     int last_w = is->video_st->codec->width;
1652     int last_h = is->video_st->codec->height;
1653     enum PixelFormat last_format = is->video_st->codec->pix_fmt;
1654
1655     if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1656         SDL_Event event;
1657         event.type = FF_QUIT_EVENT;
1658         event.user.data1 = is;
1659         SDL_PushEvent(&event);
1660         goto the_end;
1661     }
1662     filt_in  = is->in_video_filter;
1663     filt_out = is->out_video_filter;
1664 #endif
1665
1666     for (;;) {
1667         AVPacket pkt;
1668 #if CONFIG_AVFILTER
1669         AVFilterBufferRef *picref;
1670         AVRational tb = filt_out->inputs[0]->time_base;
1671 #endif
1672         while (is->paused && !is->videoq.abort_request)
1673             SDL_Delay(10);
1674
1675         avcodec_get_frame_defaults(frame);
1676         ret = get_video_frame(is, frame, &pts_int, &pkt);
1677         if (ret < 0)
1678             goto the_end;
1679
1680         if (!ret) {
1681             av_free_packet(&pkt);
1682             continue;
1683         }
1684
1685 #if CONFIG_AVFILTER
1686         if (   last_w != is->video_st->codec->width
1687             || last_h != is->video_st->codec->height
1688             || last_format != is->video_st->codec->pix_fmt) {
1689             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1690                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1691             avfilter_graph_free(&graph);
1692             graph = avfilter_graph_alloc();
1693             if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1694                 av_free_packet(&pkt);
1695                 goto the_end;
1696             }
1697             filt_in  = is->in_video_filter;
1698             filt_out = is->out_video_filter;
1699             last_w = is->video_st->codec->width;
1700             last_h = is->video_st->codec->height;
1701             last_format = is->video_st->codec->pix_fmt;
1702         }
1703
1704         frame->pts = pts_int;
1705         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1706         if (is->use_dr1 && frame->opaque) {
1707             FrameBuffer      *buf = frame->opaque;
1708             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1709                                         frame->data, frame->linesize,
1710                                         AV_PERM_READ | AV_PERM_PRESERVE,
1711                                         frame->width, frame->height,
1712                                         frame->format);
1713
1714             avfilter_copy_frame_props(fb, frame);
1715             fb->buf->priv           = buf;
1716             fb->buf->free           = filter_release_buffer;
1717
1718             buf->refcount++;
1719             av_buffersrc_add_ref(filt_in, fb, AV_BUFFERSRC_FLAG_NO_COPY);
1720
1721         } else
1722             av_buffersrc_write_frame(filt_in, frame);
1723
1724         av_free_packet(&pkt);
1725
1726         while (ret >= 0) {
1727             is->frame_last_returned_time = av_gettime() / 1000000.0;
1728
1729             ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
1730             if (ret < 0) {
1731                 ret = 0;
1732                 break;
1733             }
1734
1735             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1736             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1737                 is->frame_last_filter_delay = 0;
1738
1739             avfilter_copy_buf_props(frame, picref);
1740
1741             pts_int = picref->pts;
1742             tb      = filt_out->inputs[0]->time_base;
1743             pos     = picref->pos;
1744             frame->opaque = picref;
1745
1746             if (av_cmp_q(tb, is->video_st->time_base)) {
1747                 av_unused int64_t pts1 = pts_int;
1748                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1749                 av_dlog(NULL, "video_thread(): "
1750                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1751                         tb.num, tb.den, pts1,
1752                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1753             }
1754             pts = pts_int * av_q2d(is->video_st->time_base);
1755             ret = queue_picture(is, frame, pts, pos);
1756         }
1757 #else
1758         pts = pts_int * av_q2d(is->video_st->time_base);
1759         ret = queue_picture(is, frame, pts, pkt.pos);
1760 #endif
1761
1762         if (ret < 0)
1763             goto the_end;
1764
1765         if (is->step)
1766             stream_toggle_pause(is);
1767     }
1768  the_end:
1769     avcodec_flush_buffers(is->video_st->codec);
1770 #if CONFIG_AVFILTER
1771     av_freep(&vfilters);
1772     avfilter_graph_free(&graph);
1773 #endif
1774     av_free(frame);
1775     return 0;
1776 }
1777
1778 static int subtitle_thread(void *arg)
1779 {
1780     VideoState *is = arg;
1781     SubPicture *sp;
1782     AVPacket pkt1, *pkt = &pkt1;
1783     int got_subtitle;
1784     double pts;
1785     int i, j;
1786     int r, g, b, y, u, v, a;
1787
1788     for (;;) {
1789         while (is->paused && !is->subtitleq.abort_request) {
1790             SDL_Delay(10);
1791         }
1792         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1793             break;
1794
1795         if (pkt->data == flush_pkt.data) {
1796             avcodec_flush_buffers(is->subtitle_st->codec);
1797             continue;
1798         }
1799         SDL_LockMutex(is->subpq_mutex);
1800         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1801                !is->subtitleq.abort_request) {
1802             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1803         }
1804         SDL_UnlockMutex(is->subpq_mutex);
1805
1806         if (is->subtitleq.abort_request)
1807             return 0;
1808
1809         sp = &is->subpq[is->subpq_windex];
1810
1811        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1812            this packet, if any */
1813         pts = 0;
1814         if (pkt->pts != AV_NOPTS_VALUE)
1815             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1816
1817         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1818                                  &got_subtitle, pkt);
1819
1820         if (got_subtitle && sp->sub.format == 0) {
1821             sp->pts = pts;
1822
1823             for (i = 0; i < sp->sub.num_rects; i++)
1824             {
1825                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1826                 {
1827                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1828                     y = RGB_TO_Y_CCIR(r, g, b);
1829                     u = RGB_TO_U_CCIR(r, g, b, 0);
1830                     v = RGB_TO_V_CCIR(r, g, b, 0);
1831                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1832                 }
1833             }
1834
1835             /* now we can update the picture count */
1836             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1837                 is->subpq_windex = 0;
1838             SDL_LockMutex(is->subpq_mutex);
1839             is->subpq_size++;
1840             SDL_UnlockMutex(is->subpq_mutex);
1841         }
1842         av_free_packet(pkt);
1843     }
1844     return 0;
1845 }
1846
1847 /* copy samples for viewing in editor window */
1848 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1849 {
1850     int size, len;
1851
1852     size = samples_size / sizeof(short);
1853     while (size > 0) {
1854         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1855         if (len > size)
1856             len = size;
1857         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1858         samples += len;
1859         is->sample_array_index += len;
1860         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1861             is->sample_array_index = 0;
1862         size -= len;
1863     }
1864 }
1865
1866 /* return the wanted number of samples to get better sync if sync_type is video
1867  * or external master clock */
1868 static int synchronize_audio(VideoState *is, int nb_samples)
1869 {
1870     int wanted_nb_samples = nb_samples;
1871
1872     /* if not master, then we try to remove or add samples to correct the clock */
1873     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1874          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1875         double diff, avg_diff;
1876         int min_nb_samples, max_nb_samples;
1877
1878         diff = get_audio_clock(is) - get_master_clock(is);
1879
1880         if (diff < AV_NOSYNC_THRESHOLD) {
1881             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1882             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1883                 /* not enough measures to have a correct estimate */
1884                 is->audio_diff_avg_count++;
1885             } else {
1886                 /* estimate the A-V difference */
1887                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1888
1889                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1890                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
1891                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1892                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1893                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
1894                 }
1895                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1896                         diff, avg_diff, wanted_nb_samples - nb_samples,
1897                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1898             }
1899         } else {
1900             /* too big difference : may be initial PTS errors, so
1901                reset A-V filter */
1902             is->audio_diff_avg_count = 0;
1903             is->audio_diff_cum       = 0;
1904         }
1905     }
1906
1907     return wanted_nb_samples;
1908 }
1909
1910 /* decode one audio frame and returns its uncompressed size */
1911 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1912 {
1913     AVPacket *pkt_temp = &is->audio_pkt_temp;
1914     AVPacket *pkt = &is->audio_pkt;
1915     AVCodecContext *dec = is->audio_st->codec;
1916     int len1, len2, data_size, resampled_data_size;
1917     int64_t dec_channel_layout;
1918     int got_frame;
1919     double pts;
1920     int new_packet = 0;
1921     int flush_complete = 0;
1922     int wanted_nb_samples;
1923
1924     for (;;) {
1925         /* NOTE: the audio packet can contain several frames */
1926         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1927             if (!is->frame) {
1928                 if (!(is->frame = avcodec_alloc_frame()))
1929                     return AVERROR(ENOMEM);
1930             } else
1931                 avcodec_get_frame_defaults(is->frame);
1932
1933             if (is->paused)
1934                 return -1;
1935
1936             if (flush_complete)
1937                 break;
1938             new_packet = 0;
1939             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1940             if (len1 < 0) {
1941                 /* if error, we skip the frame */
1942                 pkt_temp->size = 0;
1943                 break;
1944             }
1945
1946             pkt_temp->data += len1;
1947             pkt_temp->size -= len1;
1948
1949             if (!got_frame) {
1950                 /* stop sending empty packets if the decoder is finished */
1951                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1952                     flush_complete = 1;
1953                 continue;
1954             }
1955             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1956                                                    is->frame->nb_samples,
1957                                                    dec->sample_fmt, 1);
1958
1959             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);
1960             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1961
1962             if (dec->sample_fmt != is->audio_src.fmt ||
1963                 dec_channel_layout != is->audio_src.channel_layout ||
1964                 dec->sample_rate != is->audio_src.freq ||
1965                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1966                 if (is->swr_ctx)
1967                     swr_free(&is->swr_ctx);
1968                 is->swr_ctx = swr_alloc_set_opts(NULL,
1969                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1970                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1971                                                  0, NULL);
1972                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1973                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1974                         dec->sample_rate,
1975                         av_get_sample_fmt_name(dec->sample_fmt),
1976                         dec->channels,
1977                         is->audio_tgt.freq,
1978                         av_get_sample_fmt_name(is->audio_tgt.fmt),
1979                         is->audio_tgt.channels);
1980                     break;
1981                 }
1982                 is->audio_src.channel_layout = dec_channel_layout;
1983                 is->audio_src.channels = dec->channels;
1984                 is->audio_src.freq = dec->sample_rate;
1985                 is->audio_src.fmt = dec->sample_fmt;
1986             }
1987
1988             resampled_data_size = data_size;
1989             if (is->swr_ctx) {
1990                 const uint8_t *in[] = { is->frame->data[0] };
1991                 uint8_t *out[] = {is->audio_buf2};
1992                 if (wanted_nb_samples != is->frame->nb_samples) {
1993                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1994                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1995                         fprintf(stderr, "swr_set_compensation() failed\n");
1996                         break;
1997                     }
1998                 }
1999                 len2 = swr_convert(is->swr_ctx, out, sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt),
2000                                                 in, is->frame->nb_samples);
2001                 if (len2 < 0) {
2002                     fprintf(stderr, "swr_convert() failed\n");
2003                     break;
2004                 }
2005                 if (len2 == sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt)) {
2006                     fprintf(stderr, "warning: audio buffer is probably too small\n");
2007                     swr_init(is->swr_ctx);
2008                 }
2009                 is->audio_buf = is->audio_buf2;
2010                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2011             } else {
2012                 is->audio_buf = is->frame->data[0];
2013             }
2014
2015             /* if no pts, then compute it */
2016             pts = is->audio_clock;
2017             *pts_ptr = pts;
2018             is->audio_clock += (double)data_size /
2019                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2020 #ifdef DEBUG
2021             {
2022                 static double last_clock;
2023                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2024                        is->audio_clock - last_clock,
2025                        is->audio_clock, pts);
2026                 last_clock = is->audio_clock;
2027             }
2028 #endif
2029             return resampled_data_size;
2030         }
2031
2032         /* free the current packet */
2033         if (pkt->data)
2034             av_free_packet(pkt);
2035         memset(pkt_temp, 0, sizeof(*pkt_temp));
2036
2037         if (is->paused || is->audioq.abort_request) {
2038             return -1;
2039         }
2040
2041         /* read next packet */
2042         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2043             return -1;
2044
2045         if (pkt->data == flush_pkt.data) {
2046             avcodec_flush_buffers(dec);
2047             flush_complete = 0;
2048         }
2049
2050         *pkt_temp = *pkt;
2051
2052         /* if update the audio clock with the pts */
2053         if (pkt->pts != AV_NOPTS_VALUE) {
2054             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2055         }
2056     }
2057 }
2058
2059 /* prepare a new audio buffer */
2060 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2061 {
2062     VideoState *is = opaque;
2063     int audio_size, len1;
2064     int bytes_per_sec;
2065     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2066     double pts;
2067
2068     audio_callback_time = av_gettime();
2069
2070     while (len > 0) {
2071         if (is->audio_buf_index >= is->audio_buf_size) {
2072            audio_size = audio_decode_frame(is, &pts);
2073            if (audio_size < 0) {
2074                 /* if error, just output silence */
2075                is->audio_buf      = is->silence_buf;
2076                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2077            } else {
2078                if (is->show_mode != SHOW_MODE_VIDEO)
2079                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2080                is->audio_buf_size = audio_size;
2081            }
2082            is->audio_buf_index = 0;
2083         }
2084         len1 = is->audio_buf_size - is->audio_buf_index;
2085         if (len1 > len)
2086             len1 = len;
2087         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2088         len -= len1;
2089         stream += len1;
2090         is->audio_buf_index += len1;
2091     }
2092     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2093     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2094     /* Let's assume the audio driver that is used by SDL has two periods. */
2095     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2096     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2097 }
2098
2099 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2100 {
2101     SDL_AudioSpec wanted_spec, spec;
2102     const char *env;
2103     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2104
2105     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2106     if (env) {
2107         wanted_nb_channels = SDL_atoi(env);
2108         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2109     }
2110     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2111         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2112         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2113     }
2114     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2115     wanted_spec.freq = wanted_sample_rate;
2116     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2117         fprintf(stderr, "Invalid sample rate or channel count!\n");
2118         return -1;
2119     }
2120     wanted_spec.format = AUDIO_S16SYS;
2121     wanted_spec.silence = 0;
2122     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2123     wanted_spec.callback = sdl_audio_callback;
2124     wanted_spec.userdata = opaque;
2125     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2126         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2127         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2128         if (!wanted_spec.channels) {
2129             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2130             return -1;
2131         }
2132         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2133     }
2134     if (spec.format != AUDIO_S16SYS) {
2135         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2136         return -1;
2137     }
2138     if (spec.channels != wanted_spec.channels) {
2139         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2140         if (!wanted_channel_layout) {
2141             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2142             return -1;
2143         }
2144     }
2145
2146     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2147     audio_hw_params->freq = spec.freq;
2148     audio_hw_params->channel_layout = wanted_channel_layout;
2149     audio_hw_params->channels =  spec.channels;
2150     return spec.size;
2151 }
2152
2153 /* open a given stream. Return 0 if OK */
2154 static int stream_component_open(VideoState *is, int stream_index)
2155 {
2156     AVFormatContext *ic = is->ic;
2157     AVCodecContext *avctx;
2158     AVCodec *codec;
2159     AVDictionary *opts;
2160     AVDictionaryEntry *t = NULL;
2161
2162     if (stream_index < 0 || stream_index >= ic->nb_streams)
2163         return -1;
2164     avctx = ic->streams[stream_index]->codec;
2165
2166     codec = avcodec_find_decoder(avctx->codec_id);
2167     opts = filter_codec_opts(codec_opts, codec, ic, ic->streams[stream_index]);
2168
2169     switch(avctx->codec_type){
2170         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2171         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2172         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2173     }
2174     if (!codec)
2175         return -1;
2176
2177     avctx->workaround_bugs   = workaround_bugs;
2178     avctx->lowres            = lowres;
2179     if(avctx->lowres > codec->max_lowres){
2180         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2181                 codec->max_lowres);
2182         avctx->lowres= codec->max_lowres;
2183     }
2184     avctx->idct_algo         = idct;
2185     avctx->skip_frame        = skip_frame;
2186     avctx->skip_idct         = skip_idct;
2187     avctx->skip_loop_filter  = skip_loop_filter;
2188     avctx->error_concealment = error_concealment;
2189
2190     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2191     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2192     if(codec->capabilities & CODEC_CAP_DR1)
2193         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2194
2195     if (!av_dict_get(opts, "threads", NULL, 0))
2196         av_dict_set(&opts, "threads", "auto", 0);
2197     if (!codec ||
2198         avcodec_open2(avctx, codec, &opts) < 0)
2199         return -1;
2200     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2201         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2202         return AVERROR_OPTION_NOT_FOUND;
2203     }
2204
2205     /* prepare audio output */
2206     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2207         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2208         if (audio_hw_buf_size < 0)
2209             return -1;
2210         is->audio_hw_buf_size = audio_hw_buf_size;
2211         is->audio_tgt = is->audio_src;
2212     }
2213
2214     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2215     switch (avctx->codec_type) {
2216     case AVMEDIA_TYPE_AUDIO:
2217         is->audio_stream = stream_index;
2218         is->audio_st = ic->streams[stream_index];
2219         is->audio_buf_size  = 0;
2220         is->audio_buf_index = 0;
2221
2222         /* init averaging filter */
2223         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2224         is->audio_diff_avg_count = 0;
2225         /* since we do not have a precise anough audio fifo fullness,
2226            we correct audio sync only if larger than this threshold */
2227         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);
2228
2229         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2230         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2231         packet_queue_start(&is->audioq);
2232         SDL_PauseAudio(0);
2233         break;
2234     case AVMEDIA_TYPE_VIDEO:
2235         is->video_stream = stream_index;
2236         is->video_st = ic->streams[stream_index];
2237
2238         packet_queue_start(&is->videoq);
2239         is->video_tid = SDL_CreateThread(video_thread, is);
2240         break;
2241     case AVMEDIA_TYPE_SUBTITLE:
2242         is->subtitle_stream = stream_index;
2243         is->subtitle_st = ic->streams[stream_index];
2244         packet_queue_start(&is->subtitleq);
2245
2246         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2247         break;
2248     default:
2249         break;
2250     }
2251     return 0;
2252 }
2253
2254 static void stream_component_close(VideoState *is, int stream_index)
2255 {
2256     AVFormatContext *ic = is->ic;
2257     AVCodecContext *avctx;
2258
2259     if (stream_index < 0 || stream_index >= ic->nb_streams)
2260         return;
2261     avctx = ic->streams[stream_index]->codec;
2262
2263     switch (avctx->codec_type) {
2264     case AVMEDIA_TYPE_AUDIO:
2265         packet_queue_abort(&is->audioq);
2266
2267         SDL_CloseAudio();
2268
2269         packet_queue_flush(&is->audioq);
2270         av_free_packet(&is->audio_pkt);
2271         if (is->swr_ctx)
2272             swr_free(&is->swr_ctx);
2273         av_freep(&is->audio_buf1);
2274         is->audio_buf = NULL;
2275         av_freep(&is->frame);
2276
2277         if (is->rdft) {
2278             av_rdft_end(is->rdft);
2279             av_freep(&is->rdft_data);
2280             is->rdft = NULL;
2281             is->rdft_bits = 0;
2282         }
2283         break;
2284     case AVMEDIA_TYPE_VIDEO:
2285         packet_queue_abort(&is->videoq);
2286
2287         /* note: we also signal this mutex to make sure we deblock the
2288            video thread in all cases */
2289         SDL_LockMutex(is->pictq_mutex);
2290         SDL_CondSignal(is->pictq_cond);
2291         SDL_UnlockMutex(is->pictq_mutex);
2292
2293         SDL_WaitThread(is->video_tid, NULL);
2294
2295         packet_queue_flush(&is->videoq);
2296         break;
2297     case AVMEDIA_TYPE_SUBTITLE:
2298         packet_queue_abort(&is->subtitleq);
2299
2300         /* note: we also signal this mutex to make sure we deblock the
2301            video thread in all cases */
2302         SDL_LockMutex(is->subpq_mutex);
2303         is->subtitle_stream_changed = 1;
2304
2305         SDL_CondSignal(is->subpq_cond);
2306         SDL_UnlockMutex(is->subpq_mutex);
2307
2308         SDL_WaitThread(is->subtitle_tid, NULL);
2309
2310         packet_queue_flush(&is->subtitleq);
2311         break;
2312     default:
2313         break;
2314     }
2315
2316     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2317     avcodec_close(avctx);
2318 #if CONFIG_AVFILTER
2319     free_buffer_pool(&is->buffer_pool);
2320 #endif
2321     switch (avctx->codec_type) {
2322     case AVMEDIA_TYPE_AUDIO:
2323         is->audio_st = NULL;
2324         is->audio_stream = -1;
2325         break;
2326     case AVMEDIA_TYPE_VIDEO:
2327         is->video_st = NULL;
2328         is->video_stream = -1;
2329         break;
2330     case AVMEDIA_TYPE_SUBTITLE:
2331         is->subtitle_st = NULL;
2332         is->subtitle_stream = -1;
2333         break;
2334     default:
2335         break;
2336     }
2337 }
2338
2339 static int decode_interrupt_cb(void *ctx)
2340 {
2341     VideoState *is = ctx;
2342     return is->abort_request;
2343 }
2344
2345 /* this thread gets the stream from the disk or the network */
2346 static int read_thread(void *arg)
2347 {
2348     VideoState *is = arg;
2349     AVFormatContext *ic = NULL;
2350     int err, i, ret;
2351     int st_index[AVMEDIA_TYPE_NB];
2352     AVPacket pkt1, *pkt = &pkt1;
2353     int eof = 0;
2354     int pkt_in_play_range = 0;
2355     AVDictionaryEntry *t;
2356     AVDictionary **opts;
2357     int orig_nb_streams;
2358
2359     memset(st_index, -1, sizeof(st_index));
2360     is->last_video_stream = is->video_stream = -1;
2361     is->last_audio_stream = is->audio_stream = -1;
2362     is->last_subtitle_stream = is->subtitle_stream = -1;
2363
2364     ic = avformat_alloc_context();
2365     ic->interrupt_callback.callback = decode_interrupt_cb;
2366     ic->interrupt_callback.opaque = is;
2367     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2368     if (err < 0) {
2369         print_error(is->filename, err);
2370         ret = -1;
2371         goto fail;
2372     }
2373     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2374         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2375         ret = AVERROR_OPTION_NOT_FOUND;
2376         goto fail;
2377     }
2378     is->ic = ic;
2379
2380     if (genpts)
2381         ic->flags |= AVFMT_FLAG_GENPTS;
2382
2383     opts = setup_find_stream_info_opts(ic, codec_opts);
2384     orig_nb_streams = ic->nb_streams;
2385
2386     err = avformat_find_stream_info(ic, opts);
2387     if (err < 0) {
2388         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2389         ret = -1;
2390         goto fail;
2391     }
2392     for (i = 0; i < orig_nb_streams; i++)
2393         av_dict_free(&opts[i]);
2394     av_freep(&opts);
2395
2396     if (ic->pb)
2397         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2398
2399     if (seek_by_bytes < 0)
2400         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2401
2402     /* if seeking requested, we execute it */
2403     if (start_time != AV_NOPTS_VALUE) {
2404         int64_t timestamp;
2405
2406         timestamp = start_time;
2407         /* add the stream start time */
2408         if (ic->start_time != AV_NOPTS_VALUE)
2409             timestamp += ic->start_time;
2410         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2411         if (ret < 0) {
2412             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2413                     is->filename, (double)timestamp / AV_TIME_BASE);
2414         }
2415     }
2416
2417     for (i = 0; i < ic->nb_streams; i++)
2418         ic->streams[i]->discard = AVDISCARD_ALL;
2419     if (!video_disable)
2420         st_index[AVMEDIA_TYPE_VIDEO] =
2421             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2422                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2423     if (!audio_disable)
2424         st_index[AVMEDIA_TYPE_AUDIO] =
2425             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2426                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2427                                 st_index[AVMEDIA_TYPE_VIDEO],
2428                                 NULL, 0);
2429     if (!video_disable)
2430         st_index[AVMEDIA_TYPE_SUBTITLE] =
2431             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2432                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2433                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2434                                  st_index[AVMEDIA_TYPE_AUDIO] :
2435                                  st_index[AVMEDIA_TYPE_VIDEO]),
2436                                 NULL, 0);
2437     if (show_status) {
2438         av_dump_format(ic, 0, is->filename, 0);
2439     }
2440
2441     is->show_mode = show_mode;
2442
2443     /* open the streams */
2444     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2445         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2446     }
2447
2448     ret = -1;
2449     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2450         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2451     }
2452     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2453     if (is->show_mode == SHOW_MODE_NONE)
2454         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2455
2456     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2457         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2458     }
2459
2460     if (is->video_stream < 0 && is->audio_stream < 0) {
2461         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2462         ret = -1;
2463         goto fail;
2464     }
2465
2466     for (;;) {
2467         if (is->abort_request)
2468             break;
2469         if (is->paused != is->last_paused) {
2470             is->last_paused = is->paused;
2471             if (is->paused)
2472                 is->read_pause_return = av_read_pause(ic);
2473             else
2474                 av_read_play(ic);
2475         }
2476 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2477         if (is->paused &&
2478                 (!strcmp(ic->iformat->name, "rtsp") ||
2479                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2480             /* wait 10 ms to avoid trying to get another packet */
2481             /* XXX: horrible */
2482             SDL_Delay(10);
2483             continue;
2484         }
2485 #endif
2486         if (is->seek_req) {
2487             int64_t seek_target = is->seek_pos;
2488             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2489             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2490 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2491 //      of the seek_pos/seek_rel variables
2492
2493             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2494             if (ret < 0) {
2495                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2496             } else {
2497                 if (is->audio_stream >= 0) {
2498                     packet_queue_flush(&is->audioq);
2499                     packet_queue_put(&is->audioq, &flush_pkt);
2500                 }
2501                 if (is->subtitle_stream >= 0) {
2502                     packet_queue_flush(&is->subtitleq);
2503                     packet_queue_put(&is->subtitleq, &flush_pkt);
2504                 }
2505                 if (is->video_stream >= 0) {
2506                     packet_queue_flush(&is->videoq);
2507                     packet_queue_put(&is->videoq, &flush_pkt);
2508                 }
2509             }
2510             is->seek_req = 0;
2511             eof = 0;
2512         }
2513
2514         /* if the queue are full, no need to read more */
2515         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2516             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2517                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2518                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2519             /* wait 10 ms */
2520             SDL_Delay(10);
2521             continue;
2522         }
2523         if (eof) {
2524             if (is->video_stream >= 0) {
2525                 av_init_packet(pkt);
2526                 pkt->data = NULL;
2527                 pkt->size = 0;
2528                 pkt->stream_index = is->video_stream;
2529                 packet_queue_put(&is->videoq, pkt);
2530             }
2531             if (is->audio_stream >= 0 &&
2532                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2533                 av_init_packet(pkt);
2534                 pkt->data = NULL;
2535                 pkt->size = 0;
2536                 pkt->stream_index = is->audio_stream;
2537                 packet_queue_put(&is->audioq, pkt);
2538             }
2539             SDL_Delay(10);
2540             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2541                 if (loop != 1 && (!loop || --loop)) {
2542                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2543                 } else if (autoexit) {
2544                     ret = AVERROR_EOF;
2545                     goto fail;
2546                 }
2547             }
2548             eof=0;
2549             continue;
2550         }
2551         ret = av_read_frame(ic, pkt);
2552         if (ret < 0) {
2553             if (ret == AVERROR_EOF || url_feof(ic->pb))
2554                 eof = 1;
2555             if (ic->pb && ic->pb->error)
2556                 break;
2557             SDL_Delay(100); /* wait for user event */
2558             continue;
2559         }
2560         /* check if packet is in play range specified by user, then queue, otherwise discard */
2561         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2562                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2563                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2564                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2565                 <= ((double)duration / 1000000);
2566         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2567             packet_queue_put(&is->audioq, pkt);
2568         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2569             packet_queue_put(&is->videoq, pkt);
2570         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2571             packet_queue_put(&is->subtitleq, pkt);
2572         } else {
2573             av_free_packet(pkt);
2574         }
2575     }
2576     /* wait until the end */
2577     while (!is->abort_request) {
2578         SDL_Delay(100);
2579     }
2580
2581     ret = 0;
2582  fail:
2583     /* close each stream */
2584     if (is->audio_stream >= 0)
2585         stream_component_close(is, is->audio_stream);
2586     if (is->video_stream >= 0)
2587         stream_component_close(is, is->video_stream);
2588     if (is->subtitle_stream >= 0)
2589         stream_component_close(is, is->subtitle_stream);
2590     if (is->ic) {
2591         avformat_close_input(&is->ic);
2592     }
2593
2594     if (ret != 0) {
2595         SDL_Event event;
2596
2597         event.type = FF_QUIT_EVENT;
2598         event.user.data1 = is;
2599         SDL_PushEvent(&event);
2600     }
2601     return 0;
2602 }
2603
2604 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2605 {
2606     VideoState *is;
2607
2608     is = av_mallocz(sizeof(VideoState));
2609     if (!is)
2610         return NULL;
2611     av_strlcpy(is->filename, filename, sizeof(is->filename));
2612     is->iformat = iformat;
2613     is->ytop    = 0;
2614     is->xleft   = 0;
2615
2616     /* start video display */
2617     is->pictq_mutex = SDL_CreateMutex();
2618     is->pictq_cond  = SDL_CreateCond();
2619
2620     is->subpq_mutex = SDL_CreateMutex();
2621     is->subpq_cond  = SDL_CreateCond();
2622
2623     packet_queue_init(&is->videoq);
2624     packet_queue_init(&is->audioq);
2625     packet_queue_init(&is->subtitleq);
2626
2627     is->av_sync_type = av_sync_type;
2628     is->read_tid     = SDL_CreateThread(read_thread, is);
2629     if (!is->read_tid) {
2630         av_free(is);
2631         return NULL;
2632     }
2633     return is;
2634 }
2635
2636 static void stream_cycle_channel(VideoState *is, int codec_type)
2637 {
2638     AVFormatContext *ic = is->ic;
2639     int start_index, stream_index;
2640     int old_index;
2641     AVStream *st;
2642
2643     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2644         start_index = is->last_video_stream;
2645         old_index = is->video_stream;
2646     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2647         start_index = is->last_audio_stream;
2648         old_index = is->audio_stream;
2649     } else {
2650         start_index = is->last_subtitle_stream;
2651         old_index = is->subtitle_stream;
2652     }
2653     stream_index = start_index;
2654     for (;;) {
2655         if (++stream_index >= is->ic->nb_streams)
2656         {
2657             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2658             {
2659                 stream_index = -1;
2660                 is->last_subtitle_stream = -1;
2661                 goto the_end;
2662             }
2663             if (start_index == -1)
2664                 return;
2665             stream_index = 0;
2666         }
2667         if (stream_index == start_index)
2668             return;
2669         st = ic->streams[stream_index];
2670         if (st->codec->codec_type == codec_type) {
2671             /* check that parameters are OK */
2672             switch (codec_type) {
2673             case AVMEDIA_TYPE_AUDIO:
2674                 if (st->codec->sample_rate != 0 &&
2675                     st->codec->channels != 0)
2676                     goto the_end;
2677                 break;
2678             case AVMEDIA_TYPE_VIDEO:
2679             case AVMEDIA_TYPE_SUBTITLE:
2680                 goto the_end;
2681             default:
2682                 break;
2683             }
2684         }
2685     }
2686  the_end:
2687     stream_component_close(is, old_index);
2688     stream_component_open(is, stream_index);
2689 }
2690
2691
2692 static void toggle_full_screen(VideoState *is)
2693 {
2694 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2695     /* OS X needs to reallocate the SDL overlays */
2696     int i;
2697     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2698         is->pictq[i].reallocate = 1;
2699 #endif
2700     is_full_screen = !is_full_screen;
2701     video_open(is, 1);
2702 }
2703
2704 static void toggle_pause(VideoState *is)
2705 {
2706     stream_toggle_pause(is);
2707     is->step = 0;
2708 }
2709
2710 static void step_to_next_frame(VideoState *is)
2711 {
2712     /* if the stream is paused unpause it, then step */
2713     if (is->paused)
2714         stream_toggle_pause(is);
2715     is->step = 1;
2716 }
2717
2718 static void toggle_audio_display(VideoState *is)
2719 {
2720     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2721     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2722     fill_rectangle(screen,
2723                 is->xleft, is->ytop, is->width, is->height,
2724                 bgcolor);
2725     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2726 }
2727
2728 /* handle an event sent by the GUI */
2729 static void event_loop(VideoState *cur_stream)
2730 {
2731     SDL_Event event;
2732     double incr, pos, frac;
2733
2734     for (;;) {
2735         double x;
2736         SDL_WaitEvent(&event);
2737         switch (event.type) {
2738         case SDL_KEYDOWN:
2739             if (exit_on_keydown) {
2740                 do_exit(cur_stream);
2741                 break;
2742             }
2743             switch (event.key.keysym.sym) {
2744             case SDLK_ESCAPE:
2745             case SDLK_q:
2746                 do_exit(cur_stream);
2747                 break;
2748             case SDLK_f:
2749                 toggle_full_screen(cur_stream);
2750                 cur_stream->force_refresh = 1;
2751                 break;
2752             case SDLK_p:
2753             case SDLK_SPACE:
2754                 toggle_pause(cur_stream);
2755                 break;
2756             case SDLK_s: // S: Step to next frame
2757                 step_to_next_frame(cur_stream);
2758                 break;
2759             case SDLK_a:
2760                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2761                 break;
2762             case SDLK_v:
2763                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2764                 break;
2765             case SDLK_t:
2766                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2767                 break;
2768             case SDLK_w:
2769                 toggle_audio_display(cur_stream);
2770                 cur_stream->force_refresh = 1;
2771                 break;
2772             case SDLK_PAGEUP:
2773                 incr = 600.0;
2774                 goto do_seek;
2775             case SDLK_PAGEDOWN:
2776                 incr = -600.0;
2777                 goto do_seek;
2778             case SDLK_LEFT:
2779                 incr = -10.0;
2780                 goto do_seek;
2781             case SDLK_RIGHT:
2782                 incr = 10.0;
2783                 goto do_seek;
2784             case SDLK_UP:
2785                 incr = 60.0;
2786                 goto do_seek;
2787             case SDLK_DOWN:
2788                 incr = -60.0;
2789             do_seek:
2790                     if (seek_by_bytes) {
2791                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2792                             pos = cur_stream->video_current_pos;
2793                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2794                             pos = cur_stream->audio_pkt.pos;
2795                         } else
2796                             pos = avio_tell(cur_stream->ic->pb);
2797                         if (cur_stream->ic->bit_rate)
2798                             incr *= cur_stream->ic->bit_rate / 8.0;
2799                         else
2800                             incr *= 180000.0;
2801                         pos += incr;
2802                         stream_seek(cur_stream, pos, incr, 1);
2803                     } else {
2804                         pos = get_master_clock(cur_stream);
2805                         pos += incr;
2806                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2807                     }
2808                 break;
2809             default:
2810                 break;
2811             }
2812             break;
2813         case SDL_VIDEOEXPOSE:
2814             cur_stream->force_refresh = 1;
2815             break;
2816         case SDL_MOUSEBUTTONDOWN:
2817             if (exit_on_mousedown) {
2818                 do_exit(cur_stream);
2819                 break;
2820             }
2821         case SDL_MOUSEMOTION:
2822             if (event.type == SDL_MOUSEBUTTONDOWN) {
2823                 x = event.button.x;
2824             } else {
2825                 if (event.motion.state != SDL_PRESSED)
2826                     break;
2827                 x = event.motion.x;
2828             }
2829                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2830                     uint64_t size =  avio_size(cur_stream->ic->pb);
2831                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2832                 } else {
2833                     int64_t ts;
2834                     int ns, hh, mm, ss;
2835                     int tns, thh, tmm, tss;
2836                     tns  = cur_stream->ic->duration / 1000000LL;
2837                     thh  = tns / 3600;
2838                     tmm  = (tns % 3600) / 60;
2839                     tss  = (tns % 60);
2840                     frac = x / cur_stream->width;
2841                     ns   = frac * tns;
2842                     hh   = ns / 3600;
2843                     mm   = (ns % 3600) / 60;
2844                     ss   = (ns % 60);
2845                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2846                             hh, mm, ss, thh, tmm, tss);
2847                     ts = frac * cur_stream->ic->duration;
2848                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2849                         ts += cur_stream->ic->start_time;
2850                     stream_seek(cur_stream, ts, 0, 0);
2851                 }
2852             break;
2853         case SDL_VIDEORESIZE:
2854                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2855                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2856                 screen_width  = cur_stream->width  = event.resize.w;
2857                 screen_height = cur_stream->height = event.resize.h;
2858                 cur_stream->force_refresh = 1;
2859             break;
2860         case SDL_QUIT:
2861         case FF_QUIT_EVENT:
2862             do_exit(cur_stream);
2863             break;
2864         case FF_ALLOC_EVENT:
2865             alloc_picture(event.user.data1);
2866             break;
2867         case FF_REFRESH_EVENT:
2868             video_refresh(event.user.data1);
2869             cur_stream->refresh = 0;
2870             break;
2871         default:
2872             break;
2873         }
2874     }
2875 }
2876
2877 static int opt_frame_size(const char *opt, const char *arg)
2878 {
2879     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2880     return opt_default("video_size", arg);
2881 }
2882
2883 static int opt_width(const char *opt, const char *arg)
2884 {
2885     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2886     return 0;
2887 }
2888
2889 static int opt_height(const char *opt, const char *arg)
2890 {
2891     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2892     return 0;
2893 }
2894
2895 static int opt_format(const char *opt, const char *arg)
2896 {
2897     file_iformat = av_find_input_format(arg);
2898     if (!file_iformat) {
2899         fprintf(stderr, "Unknown input format: %s\n", arg);
2900         return AVERROR(EINVAL);
2901     }
2902     return 0;
2903 }
2904
2905 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2906 {
2907     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2908     return opt_default("pixel_format", arg);
2909 }
2910
2911 static int opt_sync(const char *opt, const char *arg)
2912 {
2913     if (!strcmp(arg, "audio"))
2914         av_sync_type = AV_SYNC_AUDIO_MASTER;
2915     else if (!strcmp(arg, "video"))
2916         av_sync_type = AV_SYNC_VIDEO_MASTER;
2917     else if (!strcmp(arg, "ext"))
2918         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2919     else {
2920         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2921         exit(1);
2922     }
2923     return 0;
2924 }
2925
2926 static int opt_seek(const char *opt, const char *arg)
2927 {
2928     start_time = parse_time_or_die(opt, arg, 1);
2929     return 0;
2930 }
2931
2932 static int opt_duration(const char *opt, const char *arg)
2933 {
2934     duration = parse_time_or_die(opt, arg, 1);
2935     return 0;
2936 }
2937
2938 static int opt_show_mode(const char *opt, const char *arg)
2939 {
2940     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2941                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2942                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2943                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2944     return 0;
2945 }
2946
2947 static void opt_input_file(void *optctx, const char *filename)
2948 {
2949     if (input_filename) {
2950         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2951                 filename, input_filename);
2952         exit_program(1);
2953     }
2954     if (!strcmp(filename, "-"))
2955         filename = "pipe:";
2956     input_filename = filename;
2957 }
2958
2959 static int opt_codec(void *o, const char *opt, const char *arg)
2960 {
2961     switch(opt[strlen(opt)-1]){
2962     case 'a' :    audio_codec_name = arg; break;
2963     case 's' : subtitle_codec_name = arg; break;
2964     case 'v' :    video_codec_name = arg; break;
2965     }
2966     return 0;
2967 }
2968
2969 static int dummy;
2970
2971 static const OptionDef options[] = {
2972 #include "cmdutils_common_opts.h"
2973     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2974     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2975     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2976     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2977     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2978     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2979     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2980     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2981     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2982     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2983     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2984     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2985     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2986     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2987     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2988     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2989     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2990     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2991     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2992     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2993     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2994     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2995     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2996     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2997     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2998     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2999     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3000     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
3001     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
3002     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
3003     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
3004     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
3005     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
3006 #if CONFIG_AVFILTER
3007     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
3008 #endif
3009     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
3010     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3011     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
3012     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
3013     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
3014     { NULL, },
3015 };
3016
3017 static void show_usage(void)
3018 {
3019     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3020     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3021     av_log(NULL, AV_LOG_INFO, "\n");
3022 }
3023
3024 static int opt_help(const char *opt, const char *arg)
3025 {
3026     av_log_set_callback(log_callback_help);
3027     show_usage();
3028     show_help_options(options, "Main options:\n",
3029                       OPT_EXPERT, 0);
3030     show_help_options(options, "\nAdvanced options:\n",
3031                       OPT_EXPERT, OPT_EXPERT);
3032     printf("\n");
3033     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3034     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3035 #if !CONFIG_AVFILTER
3036     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3037 #endif
3038     printf("\nWhile playing:\n"
3039            "q, ESC              quit\n"
3040            "f                   toggle full screen\n"
3041            "p, SPC              pause\n"
3042            "a                   cycle audio channel\n"
3043            "v                   cycle video channel\n"
3044            "t                   cycle subtitle channel\n"
3045            "w                   show audio waves\n"
3046            "s                   activate frame-step mode\n"
3047            "left/right          seek backward/forward 10 seconds\n"
3048            "down/up             seek backward/forward 1 minute\n"
3049            "page down/page up   seek backward/forward 10 minutes\n"
3050            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3051            );
3052     return 0;
3053 }
3054
3055 static int lockmgr(void **mtx, enum AVLockOp op)
3056 {
3057    switch(op) {
3058       case AV_LOCK_CREATE:
3059           *mtx = SDL_CreateMutex();
3060           if(!*mtx)
3061               return 1;
3062           return 0;
3063       case AV_LOCK_OBTAIN:
3064           return !!SDL_LockMutex(*mtx);
3065       case AV_LOCK_RELEASE:
3066           return !!SDL_UnlockMutex(*mtx);
3067       case AV_LOCK_DESTROY:
3068           SDL_DestroyMutex(*mtx);
3069           return 0;
3070    }
3071    return 1;
3072 }
3073
3074 /* Called from the main */
3075 int main(int argc, char **argv)
3076 {
3077     int flags;
3078     VideoState *is;
3079     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3080
3081     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3082     parse_loglevel(argc, argv, options);
3083
3084     /* register all codecs, demux and protocols */
3085     avcodec_register_all();
3086 #if CONFIG_AVDEVICE
3087     avdevice_register_all();
3088 #endif
3089 #if CONFIG_AVFILTER
3090     avfilter_register_all();
3091 #endif
3092     av_register_all();
3093     avformat_network_init();
3094
3095     init_opts();
3096
3097     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3098     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3099
3100     show_banner(argc, argv, options);
3101
3102     parse_options(NULL, argc, argv, options, opt_input_file);
3103
3104     if (!input_filename) {
3105         show_usage();
3106         fprintf(stderr, "An input file must be specified\n");
3107         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3108         exit(1);
3109     }
3110
3111     if (display_disable) {
3112         video_disable = 1;
3113     }
3114     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3115     if (audio_disable)
3116         flags &= ~SDL_INIT_AUDIO;
3117     if (display_disable)
3118         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3119 #if !defined(__MINGW32__) && !defined(__APPLE__)
3120     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3121 #endif
3122     if (SDL_Init (flags)) {
3123         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3124         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3125         exit(1);
3126     }
3127
3128     if (!display_disable) {
3129 #if HAVE_SDL_VIDEO_SIZE
3130         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3131         fs_screen_width = vi->current_w;
3132         fs_screen_height = vi->current_h;
3133 #endif
3134     }
3135
3136     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3137     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3138     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3139
3140     if (av_lockmgr_register(lockmgr)) {
3141         fprintf(stderr, "Could not initialize lock manager!\n");
3142         do_exit(NULL);
3143     }
3144
3145     av_init_packet(&flush_pkt);
3146     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3147
3148     is = stream_open(input_filename, file_iformat);
3149     if (!is) {
3150         fprintf(stderr, "Failed to initialize VideoState!\n");
3151         do_exit(NULL);
3152     }
3153
3154     event_loop(is);
3155
3156     /* never returns */
3157
3158     return 0;
3159 }