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 =
1960                 (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ?
1961                 dec->channel_layout : av_get_default_channel_layout(dec->channels);
1962             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1963
1964             if (dec->sample_fmt    != is->audio_src.fmt            ||
1965                 dec_channel_layout != is->audio_src.channel_layout ||
1966                 dec->sample_rate   != is->audio_src.freq           ||
1967                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1968                 swr_free(&is->swr_ctx);
1969                 is->swr_ctx = swr_alloc_set_opts(NULL,
1970                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1971                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1972                                                  0, NULL);
1973                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1974                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1975                         dec->sample_rate,   av_get_sample_fmt_name(dec->sample_fmt),   dec->channels,
1976                         is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
1977                     break;
1978                 }
1979                 is->audio_src.channel_layout = dec_channel_layout;
1980                 is->audio_src.channels = dec->channels;
1981                 is->audio_src.freq = dec->sample_rate;
1982                 is->audio_src.fmt = dec->sample_fmt;
1983             }
1984
1985             if (is->swr_ctx) {
1986                 const uint8_t *in[] = { is->frame->data[0] };
1987                 uint8_t *out[] = {is->audio_buf2};
1988                 int out_count = sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt);
1989                 if (wanted_nb_samples != is->frame->nb_samples) {
1990                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1991                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1992                         fprintf(stderr, "swr_set_compensation() failed\n");
1993                         break;
1994                     }
1995                 }
1996                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
1997                 if (len2 < 0) {
1998                     fprintf(stderr, "swr_convert() failed\n");
1999                     break;
2000                 }
2001                 if (len2 == out_count) {
2002                     fprintf(stderr, "warning: audio buffer is probably too small\n");
2003                     swr_init(is->swr_ctx);
2004                 }
2005                 is->audio_buf = is->audio_buf2;
2006                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2007             } else {
2008                 is->audio_buf = is->frame->data[0];
2009                 resampled_data_size = data_size;
2010             }
2011
2012             /* if no pts, then compute it */
2013             pts = is->audio_clock;
2014             *pts_ptr = pts;
2015             is->audio_clock += (double)data_size /
2016                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2017 #ifdef DEBUG
2018             {
2019                 static double last_clock;
2020                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2021                        is->audio_clock - last_clock,
2022                        is->audio_clock, pts);
2023                 last_clock = is->audio_clock;
2024             }
2025 #endif
2026             return resampled_data_size;
2027         }
2028
2029         /* free the current packet */
2030         if (pkt->data)
2031             av_free_packet(pkt);
2032         memset(pkt_temp, 0, sizeof(*pkt_temp));
2033
2034         if (is->paused || is->audioq.abort_request) {
2035             return -1;
2036         }
2037
2038         /* read next packet */
2039         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2040             return -1;
2041
2042         if (pkt->data == flush_pkt.data) {
2043             avcodec_flush_buffers(dec);
2044             flush_complete = 0;
2045         }
2046
2047         *pkt_temp = *pkt;
2048
2049         /* if update the audio clock with the pts */
2050         if (pkt->pts != AV_NOPTS_VALUE) {
2051             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2052         }
2053     }
2054 }
2055
2056 /* prepare a new audio buffer */
2057 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2058 {
2059     VideoState *is = opaque;
2060     int audio_size, len1;
2061     int bytes_per_sec;
2062     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2063     double pts;
2064
2065     audio_callback_time = av_gettime();
2066
2067     while (len > 0) {
2068         if (is->audio_buf_index >= is->audio_buf_size) {
2069            audio_size = audio_decode_frame(is, &pts);
2070            if (audio_size < 0) {
2071                 /* if error, just output silence */
2072                is->audio_buf      = is->silence_buf;
2073                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2074            } else {
2075                if (is->show_mode != SHOW_MODE_VIDEO)
2076                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2077                is->audio_buf_size = audio_size;
2078            }
2079            is->audio_buf_index = 0;
2080         }
2081         len1 = is->audio_buf_size - is->audio_buf_index;
2082         if (len1 > len)
2083             len1 = len;
2084         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2085         len -= len1;
2086         stream += len1;
2087         is->audio_buf_index += len1;
2088     }
2089     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2090     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2091     /* Let's assume the audio driver that is used by SDL has two periods. */
2092     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2093     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2094 }
2095
2096 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2097 {
2098     SDL_AudioSpec wanted_spec, spec;
2099     const char *env;
2100     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2101
2102     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2103     if (env) {
2104         wanted_nb_channels = SDL_atoi(env);
2105         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2106     }
2107     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2108         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2109         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2110     }
2111     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2112     wanted_spec.freq = wanted_sample_rate;
2113     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2114         fprintf(stderr, "Invalid sample rate or channel count!\n");
2115         return -1;
2116     }
2117     wanted_spec.format = AUDIO_S16SYS;
2118     wanted_spec.silence = 0;
2119     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2120     wanted_spec.callback = sdl_audio_callback;
2121     wanted_spec.userdata = opaque;
2122     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2123         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2124         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2125         if (!wanted_spec.channels) {
2126             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2127             return -1;
2128         }
2129         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2130     }
2131     if (spec.format != AUDIO_S16SYS) {
2132         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2133         return -1;
2134     }
2135     if (spec.channels != wanted_spec.channels) {
2136         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2137         if (!wanted_channel_layout) {
2138             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2139             return -1;
2140         }
2141     }
2142
2143     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2144     audio_hw_params->freq = spec.freq;
2145     audio_hw_params->channel_layout = wanted_channel_layout;
2146     audio_hw_params->channels =  spec.channels;
2147     return spec.size;
2148 }
2149
2150 /* open a given stream. Return 0 if OK */
2151 static int stream_component_open(VideoState *is, int stream_index)
2152 {
2153     AVFormatContext *ic = is->ic;
2154     AVCodecContext *avctx;
2155     AVCodec *codec;
2156     AVDictionary *opts;
2157     AVDictionaryEntry *t = NULL;
2158
2159     if (stream_index < 0 || stream_index >= ic->nb_streams)
2160         return -1;
2161     avctx = ic->streams[stream_index]->codec;
2162
2163     codec = avcodec_find_decoder(avctx->codec_id);
2164     opts = filter_codec_opts(codec_opts, codec, ic, ic->streams[stream_index]);
2165
2166     switch(avctx->codec_type){
2167         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2168         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2169         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2170     }
2171     if (!codec)
2172         return -1;
2173
2174     avctx->workaround_bugs   = workaround_bugs;
2175     avctx->lowres            = lowres;
2176     if(avctx->lowres > codec->max_lowres){
2177         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2178                 codec->max_lowres);
2179         avctx->lowres= codec->max_lowres;
2180     }
2181     avctx->idct_algo         = idct;
2182     avctx->skip_frame        = skip_frame;
2183     avctx->skip_idct         = skip_idct;
2184     avctx->skip_loop_filter  = skip_loop_filter;
2185     avctx->error_concealment = error_concealment;
2186
2187     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2188     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2189     if(codec->capabilities & CODEC_CAP_DR1)
2190         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2191
2192     if (!av_dict_get(opts, "threads", NULL, 0))
2193         av_dict_set(&opts, "threads", "auto", 0);
2194     if (!codec ||
2195         avcodec_open2(avctx, codec, &opts) < 0)
2196         return -1;
2197     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2198         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2199         return AVERROR_OPTION_NOT_FOUND;
2200     }
2201
2202     /* prepare audio output */
2203     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2204         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2205         if (audio_hw_buf_size < 0)
2206             return -1;
2207         is->audio_hw_buf_size = audio_hw_buf_size;
2208         is->audio_tgt = is->audio_src;
2209     }
2210
2211     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2212     switch (avctx->codec_type) {
2213     case AVMEDIA_TYPE_AUDIO:
2214         is->audio_stream = stream_index;
2215         is->audio_st = ic->streams[stream_index];
2216         is->audio_buf_size  = 0;
2217         is->audio_buf_index = 0;
2218
2219         /* init averaging filter */
2220         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2221         is->audio_diff_avg_count = 0;
2222         /* since we do not have a precise anough audio fifo fullness,
2223            we correct audio sync only if larger than this threshold */
2224         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);
2225
2226         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2227         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2228         packet_queue_start(&is->audioq);
2229         SDL_PauseAudio(0);
2230         break;
2231     case AVMEDIA_TYPE_VIDEO:
2232         is->video_stream = stream_index;
2233         is->video_st = ic->streams[stream_index];
2234
2235         packet_queue_start(&is->videoq);
2236         is->video_tid = SDL_CreateThread(video_thread, is);
2237         break;
2238     case AVMEDIA_TYPE_SUBTITLE:
2239         is->subtitle_stream = stream_index;
2240         is->subtitle_st = ic->streams[stream_index];
2241         packet_queue_start(&is->subtitleq);
2242
2243         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2244         break;
2245     default:
2246         break;
2247     }
2248     return 0;
2249 }
2250
2251 static void stream_component_close(VideoState *is, int stream_index)
2252 {
2253     AVFormatContext *ic = is->ic;
2254     AVCodecContext *avctx;
2255
2256     if (stream_index < 0 || stream_index >= ic->nb_streams)
2257         return;
2258     avctx = ic->streams[stream_index]->codec;
2259
2260     switch (avctx->codec_type) {
2261     case AVMEDIA_TYPE_AUDIO:
2262         packet_queue_abort(&is->audioq);
2263
2264         SDL_CloseAudio();
2265
2266         packet_queue_flush(&is->audioq);
2267         av_free_packet(&is->audio_pkt);
2268         swr_free(&is->swr_ctx);
2269         av_freep(&is->audio_buf1);
2270         is->audio_buf = NULL;
2271         av_freep(&is->frame);
2272
2273         if (is->rdft) {
2274             av_rdft_end(is->rdft);
2275             av_freep(&is->rdft_data);
2276             is->rdft = NULL;
2277             is->rdft_bits = 0;
2278         }
2279         break;
2280     case AVMEDIA_TYPE_VIDEO:
2281         packet_queue_abort(&is->videoq);
2282
2283         /* note: we also signal this mutex to make sure we deblock the
2284            video thread in all cases */
2285         SDL_LockMutex(is->pictq_mutex);
2286         SDL_CondSignal(is->pictq_cond);
2287         SDL_UnlockMutex(is->pictq_mutex);
2288
2289         SDL_WaitThread(is->video_tid, NULL);
2290
2291         packet_queue_flush(&is->videoq);
2292         break;
2293     case AVMEDIA_TYPE_SUBTITLE:
2294         packet_queue_abort(&is->subtitleq);
2295
2296         /* note: we also signal this mutex to make sure we deblock the
2297            video thread in all cases */
2298         SDL_LockMutex(is->subpq_mutex);
2299         is->subtitle_stream_changed = 1;
2300
2301         SDL_CondSignal(is->subpq_cond);
2302         SDL_UnlockMutex(is->subpq_mutex);
2303
2304         SDL_WaitThread(is->subtitle_tid, NULL);
2305
2306         packet_queue_flush(&is->subtitleq);
2307         break;
2308     default:
2309         break;
2310     }
2311
2312     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2313     avcodec_close(avctx);
2314 #if CONFIG_AVFILTER
2315     free_buffer_pool(&is->buffer_pool);
2316 #endif
2317     switch (avctx->codec_type) {
2318     case AVMEDIA_TYPE_AUDIO:
2319         is->audio_st = NULL;
2320         is->audio_stream = -1;
2321         break;
2322     case AVMEDIA_TYPE_VIDEO:
2323         is->video_st = NULL;
2324         is->video_stream = -1;
2325         break;
2326     case AVMEDIA_TYPE_SUBTITLE:
2327         is->subtitle_st = NULL;
2328         is->subtitle_stream = -1;
2329         break;
2330     default:
2331         break;
2332     }
2333 }
2334
2335 static int decode_interrupt_cb(void *ctx)
2336 {
2337     VideoState *is = ctx;
2338     return is->abort_request;
2339 }
2340
2341 /* this thread gets the stream from the disk or the network */
2342 static int read_thread(void *arg)
2343 {
2344     VideoState *is = arg;
2345     AVFormatContext *ic = NULL;
2346     int err, i, ret;
2347     int st_index[AVMEDIA_TYPE_NB];
2348     AVPacket pkt1, *pkt = &pkt1;
2349     int eof = 0;
2350     int pkt_in_play_range = 0;
2351     AVDictionaryEntry *t;
2352     AVDictionary **opts;
2353     int orig_nb_streams;
2354
2355     memset(st_index, -1, sizeof(st_index));
2356     is->last_video_stream = is->video_stream = -1;
2357     is->last_audio_stream = is->audio_stream = -1;
2358     is->last_subtitle_stream = is->subtitle_stream = -1;
2359
2360     ic = avformat_alloc_context();
2361     ic->interrupt_callback.callback = decode_interrupt_cb;
2362     ic->interrupt_callback.opaque = is;
2363     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2364     if (err < 0) {
2365         print_error(is->filename, err);
2366         ret = -1;
2367         goto fail;
2368     }
2369     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2370         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2371         ret = AVERROR_OPTION_NOT_FOUND;
2372         goto fail;
2373     }
2374     is->ic = ic;
2375
2376     if (genpts)
2377         ic->flags |= AVFMT_FLAG_GENPTS;
2378
2379     opts = setup_find_stream_info_opts(ic, codec_opts);
2380     orig_nb_streams = ic->nb_streams;
2381
2382     err = avformat_find_stream_info(ic, opts);
2383     if (err < 0) {
2384         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2385         ret = -1;
2386         goto fail;
2387     }
2388     for (i = 0; i < orig_nb_streams; i++)
2389         av_dict_free(&opts[i]);
2390     av_freep(&opts);
2391
2392     if (ic->pb)
2393         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2394
2395     if (seek_by_bytes < 0)
2396         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2397
2398     /* if seeking requested, we execute it */
2399     if (start_time != AV_NOPTS_VALUE) {
2400         int64_t timestamp;
2401
2402         timestamp = start_time;
2403         /* add the stream start time */
2404         if (ic->start_time != AV_NOPTS_VALUE)
2405             timestamp += ic->start_time;
2406         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2407         if (ret < 0) {
2408             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2409                     is->filename, (double)timestamp / AV_TIME_BASE);
2410         }
2411     }
2412
2413     for (i = 0; i < ic->nb_streams; i++)
2414         ic->streams[i]->discard = AVDISCARD_ALL;
2415     if (!video_disable)
2416         st_index[AVMEDIA_TYPE_VIDEO] =
2417             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2418                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2419     if (!audio_disable)
2420         st_index[AVMEDIA_TYPE_AUDIO] =
2421             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2422                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2423                                 st_index[AVMEDIA_TYPE_VIDEO],
2424                                 NULL, 0);
2425     if (!video_disable)
2426         st_index[AVMEDIA_TYPE_SUBTITLE] =
2427             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2428                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2429                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2430                                  st_index[AVMEDIA_TYPE_AUDIO] :
2431                                  st_index[AVMEDIA_TYPE_VIDEO]),
2432                                 NULL, 0);
2433     if (show_status) {
2434         av_dump_format(ic, 0, is->filename, 0);
2435     }
2436
2437     is->show_mode = show_mode;
2438
2439     /* open the streams */
2440     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2441         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2442     }
2443
2444     ret = -1;
2445     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2446         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2447     }
2448     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2449     if (is->show_mode == SHOW_MODE_NONE)
2450         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2451
2452     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2453         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2454     }
2455
2456     if (is->video_stream < 0 && is->audio_stream < 0) {
2457         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2458         ret = -1;
2459         goto fail;
2460     }
2461
2462     for (;;) {
2463         if (is->abort_request)
2464             break;
2465         if (is->paused != is->last_paused) {
2466             is->last_paused = is->paused;
2467             if (is->paused)
2468                 is->read_pause_return = av_read_pause(ic);
2469             else
2470                 av_read_play(ic);
2471         }
2472 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2473         if (is->paused &&
2474                 (!strcmp(ic->iformat->name, "rtsp") ||
2475                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2476             /* wait 10 ms to avoid trying to get another packet */
2477             /* XXX: horrible */
2478             SDL_Delay(10);
2479             continue;
2480         }
2481 #endif
2482         if (is->seek_req) {
2483             int64_t seek_target = is->seek_pos;
2484             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2485             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2486 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2487 //      of the seek_pos/seek_rel variables
2488
2489             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2490             if (ret < 0) {
2491                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2492             } else {
2493                 if (is->audio_stream >= 0) {
2494                     packet_queue_flush(&is->audioq);
2495                     packet_queue_put(&is->audioq, &flush_pkt);
2496                 }
2497                 if (is->subtitle_stream >= 0) {
2498                     packet_queue_flush(&is->subtitleq);
2499                     packet_queue_put(&is->subtitleq, &flush_pkt);
2500                 }
2501                 if (is->video_stream >= 0) {
2502                     packet_queue_flush(&is->videoq);
2503                     packet_queue_put(&is->videoq, &flush_pkt);
2504                 }
2505             }
2506             is->seek_req = 0;
2507             eof = 0;
2508         }
2509
2510         /* if the queue are full, no need to read more */
2511         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2512             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2513                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2514                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2515             /* wait 10 ms */
2516             SDL_Delay(10);
2517             continue;
2518         }
2519         if (eof) {
2520             if (is->video_stream >= 0) {
2521                 av_init_packet(pkt);
2522                 pkt->data = NULL;
2523                 pkt->size = 0;
2524                 pkt->stream_index = is->video_stream;
2525                 packet_queue_put(&is->videoq, pkt);
2526             }
2527             if (is->audio_stream >= 0 &&
2528                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2529                 av_init_packet(pkt);
2530                 pkt->data = NULL;
2531                 pkt->size = 0;
2532                 pkt->stream_index = is->audio_stream;
2533                 packet_queue_put(&is->audioq, pkt);
2534             }
2535             SDL_Delay(10);
2536             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2537                 if (loop != 1 && (!loop || --loop)) {
2538                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2539                 } else if (autoexit) {
2540                     ret = AVERROR_EOF;
2541                     goto fail;
2542                 }
2543             }
2544             eof=0;
2545             continue;
2546         }
2547         ret = av_read_frame(ic, pkt);
2548         if (ret < 0) {
2549             if (ret == AVERROR_EOF || url_feof(ic->pb))
2550                 eof = 1;
2551             if (ic->pb && ic->pb->error)
2552                 break;
2553             SDL_Delay(100); /* wait for user event */
2554             continue;
2555         }
2556         /* check if packet is in play range specified by user, then queue, otherwise discard */
2557         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2558                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2559                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2560                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2561                 <= ((double)duration / 1000000);
2562         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2563             packet_queue_put(&is->audioq, pkt);
2564         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2565             packet_queue_put(&is->videoq, pkt);
2566         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2567             packet_queue_put(&is->subtitleq, pkt);
2568         } else {
2569             av_free_packet(pkt);
2570         }
2571     }
2572     /* wait until the end */
2573     while (!is->abort_request) {
2574         SDL_Delay(100);
2575     }
2576
2577     ret = 0;
2578  fail:
2579     /* close each stream */
2580     if (is->audio_stream >= 0)
2581         stream_component_close(is, is->audio_stream);
2582     if (is->video_stream >= 0)
2583         stream_component_close(is, is->video_stream);
2584     if (is->subtitle_stream >= 0)
2585         stream_component_close(is, is->subtitle_stream);
2586     if (is->ic) {
2587         avformat_close_input(&is->ic);
2588     }
2589
2590     if (ret != 0) {
2591         SDL_Event event;
2592
2593         event.type = FF_QUIT_EVENT;
2594         event.user.data1 = is;
2595         SDL_PushEvent(&event);
2596     }
2597     return 0;
2598 }
2599
2600 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2601 {
2602     VideoState *is;
2603
2604     is = av_mallocz(sizeof(VideoState));
2605     if (!is)
2606         return NULL;
2607     av_strlcpy(is->filename, filename, sizeof(is->filename));
2608     is->iformat = iformat;
2609     is->ytop    = 0;
2610     is->xleft   = 0;
2611
2612     /* start video display */
2613     is->pictq_mutex = SDL_CreateMutex();
2614     is->pictq_cond  = SDL_CreateCond();
2615
2616     is->subpq_mutex = SDL_CreateMutex();
2617     is->subpq_cond  = SDL_CreateCond();
2618
2619     packet_queue_init(&is->videoq);
2620     packet_queue_init(&is->audioq);
2621     packet_queue_init(&is->subtitleq);
2622
2623     is->av_sync_type = av_sync_type;
2624     is->read_tid     = SDL_CreateThread(read_thread, is);
2625     if (!is->read_tid) {
2626         av_free(is);
2627         return NULL;
2628     }
2629     return is;
2630 }
2631
2632 static void stream_cycle_channel(VideoState *is, int codec_type)
2633 {
2634     AVFormatContext *ic = is->ic;
2635     int start_index, stream_index;
2636     int old_index;
2637     AVStream *st;
2638
2639     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2640         start_index = is->last_video_stream;
2641         old_index = is->video_stream;
2642     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2643         start_index = is->last_audio_stream;
2644         old_index = is->audio_stream;
2645     } else {
2646         start_index = is->last_subtitle_stream;
2647         old_index = is->subtitle_stream;
2648     }
2649     stream_index = start_index;
2650     for (;;) {
2651         if (++stream_index >= is->ic->nb_streams)
2652         {
2653             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2654             {
2655                 stream_index = -1;
2656                 is->last_subtitle_stream = -1;
2657                 goto the_end;
2658             }
2659             if (start_index == -1)
2660                 return;
2661             stream_index = 0;
2662         }
2663         if (stream_index == start_index)
2664             return;
2665         st = ic->streams[stream_index];
2666         if (st->codec->codec_type == codec_type) {
2667             /* check that parameters are OK */
2668             switch (codec_type) {
2669             case AVMEDIA_TYPE_AUDIO:
2670                 if (st->codec->sample_rate != 0 &&
2671                     st->codec->channels != 0)
2672                     goto the_end;
2673                 break;
2674             case AVMEDIA_TYPE_VIDEO:
2675             case AVMEDIA_TYPE_SUBTITLE:
2676                 goto the_end;
2677             default:
2678                 break;
2679             }
2680         }
2681     }
2682  the_end:
2683     stream_component_close(is, old_index);
2684     stream_component_open(is, stream_index);
2685 }
2686
2687
2688 static void toggle_full_screen(VideoState *is)
2689 {
2690 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2691     /* OS X needs to reallocate the SDL overlays */
2692     int i;
2693     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2694         is->pictq[i].reallocate = 1;
2695 #endif
2696     is_full_screen = !is_full_screen;
2697     video_open(is, 1);
2698 }
2699
2700 static void toggle_pause(VideoState *is)
2701 {
2702     stream_toggle_pause(is);
2703     is->step = 0;
2704 }
2705
2706 static void step_to_next_frame(VideoState *is)
2707 {
2708     /* if the stream is paused unpause it, then step */
2709     if (is->paused)
2710         stream_toggle_pause(is);
2711     is->step = 1;
2712 }
2713
2714 static void toggle_audio_display(VideoState *is)
2715 {
2716     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2717     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2718     fill_rectangle(screen,
2719                 is->xleft, is->ytop, is->width, is->height,
2720                 bgcolor);
2721     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2722 }
2723
2724 /* handle an event sent by the GUI */
2725 static void event_loop(VideoState *cur_stream)
2726 {
2727     SDL_Event event;
2728     double incr, pos, frac;
2729
2730     for (;;) {
2731         double x;
2732         SDL_WaitEvent(&event);
2733         switch (event.type) {
2734         case SDL_KEYDOWN:
2735             if (exit_on_keydown) {
2736                 do_exit(cur_stream);
2737                 break;
2738             }
2739             switch (event.key.keysym.sym) {
2740             case SDLK_ESCAPE:
2741             case SDLK_q:
2742                 do_exit(cur_stream);
2743                 break;
2744             case SDLK_f:
2745                 toggle_full_screen(cur_stream);
2746                 cur_stream->force_refresh = 1;
2747                 break;
2748             case SDLK_p:
2749             case SDLK_SPACE:
2750                 toggle_pause(cur_stream);
2751                 break;
2752             case SDLK_s: // S: Step to next frame
2753                 step_to_next_frame(cur_stream);
2754                 break;
2755             case SDLK_a:
2756                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2757                 break;
2758             case SDLK_v:
2759                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2760                 break;
2761             case SDLK_t:
2762                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2763                 break;
2764             case SDLK_w:
2765                 toggle_audio_display(cur_stream);
2766                 cur_stream->force_refresh = 1;
2767                 break;
2768             case SDLK_PAGEUP:
2769                 incr = 600.0;
2770                 goto do_seek;
2771             case SDLK_PAGEDOWN:
2772                 incr = -600.0;
2773                 goto do_seek;
2774             case SDLK_LEFT:
2775                 incr = -10.0;
2776                 goto do_seek;
2777             case SDLK_RIGHT:
2778                 incr = 10.0;
2779                 goto do_seek;
2780             case SDLK_UP:
2781                 incr = 60.0;
2782                 goto do_seek;
2783             case SDLK_DOWN:
2784                 incr = -60.0;
2785             do_seek:
2786                     if (seek_by_bytes) {
2787                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2788                             pos = cur_stream->video_current_pos;
2789                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2790                             pos = cur_stream->audio_pkt.pos;
2791                         } else
2792                             pos = avio_tell(cur_stream->ic->pb);
2793                         if (cur_stream->ic->bit_rate)
2794                             incr *= cur_stream->ic->bit_rate / 8.0;
2795                         else
2796                             incr *= 180000.0;
2797                         pos += incr;
2798                         stream_seek(cur_stream, pos, incr, 1);
2799                     } else {
2800                         pos = get_master_clock(cur_stream);
2801                         pos += incr;
2802                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2803                     }
2804                 break;
2805             default:
2806                 break;
2807             }
2808             break;
2809         case SDL_VIDEOEXPOSE:
2810             cur_stream->force_refresh = 1;
2811             break;
2812         case SDL_MOUSEBUTTONDOWN:
2813             if (exit_on_mousedown) {
2814                 do_exit(cur_stream);
2815                 break;
2816             }
2817         case SDL_MOUSEMOTION:
2818             if (event.type == SDL_MOUSEBUTTONDOWN) {
2819                 x = event.button.x;
2820             } else {
2821                 if (event.motion.state != SDL_PRESSED)
2822                     break;
2823                 x = event.motion.x;
2824             }
2825                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2826                     uint64_t size =  avio_size(cur_stream->ic->pb);
2827                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2828                 } else {
2829                     int64_t ts;
2830                     int ns, hh, mm, ss;
2831                     int tns, thh, tmm, tss;
2832                     tns  = cur_stream->ic->duration / 1000000LL;
2833                     thh  = tns / 3600;
2834                     tmm  = (tns % 3600) / 60;
2835                     tss  = (tns % 60);
2836                     frac = x / cur_stream->width;
2837                     ns   = frac * tns;
2838                     hh   = ns / 3600;
2839                     mm   = (ns % 3600) / 60;
2840                     ss   = (ns % 60);
2841                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2842                             hh, mm, ss, thh, tmm, tss);
2843                     ts = frac * cur_stream->ic->duration;
2844                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2845                         ts += cur_stream->ic->start_time;
2846                     stream_seek(cur_stream, ts, 0, 0);
2847                 }
2848             break;
2849         case SDL_VIDEORESIZE:
2850                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2851                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2852                 screen_width  = cur_stream->width  = event.resize.w;
2853                 screen_height = cur_stream->height = event.resize.h;
2854                 cur_stream->force_refresh = 1;
2855             break;
2856         case SDL_QUIT:
2857         case FF_QUIT_EVENT:
2858             do_exit(cur_stream);
2859             break;
2860         case FF_ALLOC_EVENT:
2861             alloc_picture(event.user.data1);
2862             break;
2863         case FF_REFRESH_EVENT:
2864             video_refresh(event.user.data1);
2865             cur_stream->refresh = 0;
2866             break;
2867         default:
2868             break;
2869         }
2870     }
2871 }
2872
2873 static int opt_frame_size(const char *opt, const char *arg)
2874 {
2875     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2876     return opt_default("video_size", arg);
2877 }
2878
2879 static int opt_width(const char *opt, const char *arg)
2880 {
2881     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2882     return 0;
2883 }
2884
2885 static int opt_height(const char *opt, const char *arg)
2886 {
2887     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2888     return 0;
2889 }
2890
2891 static int opt_format(const char *opt, const char *arg)
2892 {
2893     file_iformat = av_find_input_format(arg);
2894     if (!file_iformat) {
2895         fprintf(stderr, "Unknown input format: %s\n", arg);
2896         return AVERROR(EINVAL);
2897     }
2898     return 0;
2899 }
2900
2901 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2902 {
2903     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2904     return opt_default("pixel_format", arg);
2905 }
2906
2907 static int opt_sync(const char *opt, const char *arg)
2908 {
2909     if (!strcmp(arg, "audio"))
2910         av_sync_type = AV_SYNC_AUDIO_MASTER;
2911     else if (!strcmp(arg, "video"))
2912         av_sync_type = AV_SYNC_VIDEO_MASTER;
2913     else if (!strcmp(arg, "ext"))
2914         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2915     else {
2916         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2917         exit(1);
2918     }
2919     return 0;
2920 }
2921
2922 static int opt_seek(const char *opt, const char *arg)
2923 {
2924     start_time = parse_time_or_die(opt, arg, 1);
2925     return 0;
2926 }
2927
2928 static int opt_duration(const char *opt, const char *arg)
2929 {
2930     duration = parse_time_or_die(opt, arg, 1);
2931     return 0;
2932 }
2933
2934 static int opt_show_mode(const char *opt, const char *arg)
2935 {
2936     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2937                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2938                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2939                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2940     return 0;
2941 }
2942
2943 static void opt_input_file(void *optctx, const char *filename)
2944 {
2945     if (input_filename) {
2946         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2947                 filename, input_filename);
2948         exit_program(1);
2949     }
2950     if (!strcmp(filename, "-"))
2951         filename = "pipe:";
2952     input_filename = filename;
2953 }
2954
2955 static int opt_codec(void *o, const char *opt, const char *arg)
2956 {
2957     switch(opt[strlen(opt)-1]){
2958     case 'a' :    audio_codec_name = arg; break;
2959     case 's' : subtitle_codec_name = arg; break;
2960     case 'v' :    video_codec_name = arg; break;
2961     }
2962     return 0;
2963 }
2964
2965 static int dummy;
2966
2967 static const OptionDef options[] = {
2968 #include "cmdutils_common_opts.h"
2969     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2970     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2971     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2972     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2973     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2974     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2975     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2976     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2977     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2978     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2979     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2980     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2981     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2982     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2983     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2984     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2985     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2986     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2987     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2988     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2989     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2990     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2991     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2992     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2993     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2994     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2995     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2996     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2997     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2998     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2999     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
3000     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
3001     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
3002 #if CONFIG_AVFILTER
3003     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
3004 #endif
3005     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
3006     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3007     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
3008     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
3009     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
3010     { NULL, },
3011 };
3012
3013 static void show_usage(void)
3014 {
3015     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3016     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3017     av_log(NULL, AV_LOG_INFO, "\n");
3018 }
3019
3020 static int opt_help(const char *opt, const char *arg)
3021 {
3022     av_log_set_callback(log_callback_help);
3023     show_usage();
3024     show_help_options(options, "Main options:\n",
3025                       OPT_EXPERT, 0);
3026     show_help_options(options, "\nAdvanced options:\n",
3027                       OPT_EXPERT, OPT_EXPERT);
3028     printf("\n");
3029     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3030     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3031 #if !CONFIG_AVFILTER
3032     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3033 #endif
3034     printf("\nWhile playing:\n"
3035            "q, ESC              quit\n"
3036            "f                   toggle full screen\n"
3037            "p, SPC              pause\n"
3038            "a                   cycle audio channel\n"
3039            "v                   cycle video channel\n"
3040            "t                   cycle subtitle channel\n"
3041            "w                   show audio waves\n"
3042            "s                   activate frame-step mode\n"
3043            "left/right          seek backward/forward 10 seconds\n"
3044            "down/up             seek backward/forward 1 minute\n"
3045            "page down/page up   seek backward/forward 10 minutes\n"
3046            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3047            );
3048     return 0;
3049 }
3050
3051 static int lockmgr(void **mtx, enum AVLockOp op)
3052 {
3053    switch(op) {
3054       case AV_LOCK_CREATE:
3055           *mtx = SDL_CreateMutex();
3056           if(!*mtx)
3057               return 1;
3058           return 0;
3059       case AV_LOCK_OBTAIN:
3060           return !!SDL_LockMutex(*mtx);
3061       case AV_LOCK_RELEASE:
3062           return !!SDL_UnlockMutex(*mtx);
3063       case AV_LOCK_DESTROY:
3064           SDL_DestroyMutex(*mtx);
3065           return 0;
3066    }
3067    return 1;
3068 }
3069
3070 /* Called from the main */
3071 int main(int argc, char **argv)
3072 {
3073     int flags;
3074     VideoState *is;
3075     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3076
3077     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3078     parse_loglevel(argc, argv, options);
3079
3080     /* register all codecs, demux and protocols */
3081     avcodec_register_all();
3082 #if CONFIG_AVDEVICE
3083     avdevice_register_all();
3084 #endif
3085 #if CONFIG_AVFILTER
3086     avfilter_register_all();
3087 #endif
3088     av_register_all();
3089     avformat_network_init();
3090
3091     init_opts();
3092
3093     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3094     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3095
3096     show_banner(argc, argv, options);
3097
3098     parse_options(NULL, argc, argv, options, opt_input_file);
3099
3100     if (!input_filename) {
3101         show_usage();
3102         fprintf(stderr, "An input file must be specified\n");
3103         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3104         exit(1);
3105     }
3106
3107     if (display_disable) {
3108         video_disable = 1;
3109     }
3110     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3111     if (audio_disable)
3112         flags &= ~SDL_INIT_AUDIO;
3113     if (display_disable)
3114         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3115 #if !defined(__MINGW32__) && !defined(__APPLE__)
3116     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3117 #endif
3118     if (SDL_Init (flags)) {
3119         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3120         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3121         exit(1);
3122     }
3123
3124     if (!display_disable) {
3125 #if HAVE_SDL_VIDEO_SIZE
3126         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3127         fs_screen_width = vi->current_w;
3128         fs_screen_height = vi->current_h;
3129 #endif
3130     }
3131
3132     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3133     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3134     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3135
3136     if (av_lockmgr_register(lockmgr)) {
3137         fprintf(stderr, "Could not initialize lock manager!\n");
3138         do_exit(NULL);
3139     }
3140
3141     av_init_packet(&flush_pkt);
3142     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3143
3144     is = stream_open(input_filename, file_iformat);
3145     if (!is) {
3146         fprintf(stderr, "Failed to initialize VideoState!\n");
3147         do_exit(NULL);
3148     }
3149
3150     event_loop(is);
3151
3152     /* never returns */
3153
3154     return 0;
3155 }