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     return ret;
1629 }
1630
1631 #endif  /* CONFIG_AVFILTER */
1632
1633 static int video_thread(void *arg)
1634 {
1635     VideoState *is = arg;
1636     AVFrame *frame = avcodec_alloc_frame();
1637     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1638     double pts;
1639     int ret;
1640
1641 #if CONFIG_AVFILTER
1642     AVCodecContext *codec = is->video_st->codec;
1643     AVFilterGraph *graph = avfilter_graph_alloc();
1644     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1645     int last_w = 0;
1646     int last_h = 0;
1647     enum PixelFormat last_format = -2;
1648
1649     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1650         is->use_dr1 = 1;
1651         codec->get_buffer     = codec_get_buffer;
1652         codec->release_buffer = codec_release_buffer;
1653         codec->opaque         = &is->buffer_pool;
1654     }
1655 #endif
1656
1657     for (;;) {
1658         AVPacket pkt;
1659 #if CONFIG_AVFILTER
1660         AVFilterBufferRef *picref;
1661         AVRational tb;
1662 #endif
1663         while (is->paused && !is->videoq.abort_request)
1664             SDL_Delay(10);
1665
1666         avcodec_get_frame_defaults(frame);
1667         ret = get_video_frame(is, frame, &pts_int, &pkt);
1668         if (ret < 0)
1669             goto the_end;
1670
1671         if (!ret) {
1672             av_free_packet(&pkt);
1673             continue;
1674         }
1675
1676 #if CONFIG_AVFILTER
1677         if (   last_w != is->video_st->codec->width
1678             || last_h != is->video_st->codec->height
1679             || last_format != is->video_st->codec->pix_fmt) {
1680             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1681                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1682             avfilter_graph_free(&graph);
1683             graph = avfilter_graph_alloc();
1684             if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1685                 SDL_Event event;
1686                 event.type = FF_QUIT_EVENT;
1687                 event.user.data1 = is;
1688                 SDL_PushEvent(&event);
1689                 av_free_packet(&pkt);
1690                 goto the_end;
1691             }
1692             filt_in  = is->in_video_filter;
1693             filt_out = is->out_video_filter;
1694             last_w = is->video_st->codec->width;
1695             last_h = is->video_st->codec->height;
1696             last_format = is->video_st->codec->pix_fmt;
1697         }
1698
1699         frame->pts = pts_int;
1700         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1701         if (is->use_dr1 && frame->opaque) {
1702             FrameBuffer      *buf = frame->opaque;
1703             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1704                                         frame->data, frame->linesize,
1705                                         AV_PERM_READ | AV_PERM_PRESERVE,
1706                                         frame->width, frame->height,
1707                                         frame->format);
1708
1709             avfilter_copy_frame_props(fb, frame);
1710             fb->buf->priv           = buf;
1711             fb->buf->free           = filter_release_buffer;
1712
1713             buf->refcount++;
1714             av_buffersrc_add_ref(filt_in, fb, AV_BUFFERSRC_FLAG_NO_COPY);
1715
1716         } else
1717             av_buffersrc_write_frame(filt_in, frame);
1718
1719         av_free_packet(&pkt);
1720
1721         while (ret >= 0) {
1722             is->frame_last_returned_time = av_gettime() / 1000000.0;
1723
1724             ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
1725             if (ret < 0) {
1726                 ret = 0;
1727                 break;
1728             }
1729
1730             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1731             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1732                 is->frame_last_filter_delay = 0;
1733
1734             avfilter_copy_buf_props(frame, picref);
1735
1736             pts_int = picref->pts;
1737             tb      = filt_out->inputs[0]->time_base;
1738             pos     = picref->pos;
1739             frame->opaque = picref;
1740
1741             if (av_cmp_q(tb, is->video_st->time_base)) {
1742                 av_unused int64_t pts1 = pts_int;
1743                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1744                 av_dlog(NULL, "video_thread(): "
1745                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1746                         tb.num, tb.den, pts1,
1747                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1748             }
1749             pts = pts_int * av_q2d(is->video_st->time_base);
1750             ret = queue_picture(is, frame, pts, pos);
1751         }
1752 #else
1753         pts = pts_int * av_q2d(is->video_st->time_base);
1754         ret = queue_picture(is, frame, pts, pkt.pos);
1755 #endif
1756
1757         if (ret < 0)
1758             goto the_end;
1759
1760         if (is->step)
1761             stream_toggle_pause(is);
1762     }
1763  the_end:
1764     avcodec_flush_buffers(is->video_st->codec);
1765 #if CONFIG_AVFILTER
1766     av_freep(&vfilters);
1767     avfilter_graph_free(&graph);
1768 #endif
1769     av_free(frame);
1770     return 0;
1771 }
1772
1773 static int subtitle_thread(void *arg)
1774 {
1775     VideoState *is = arg;
1776     SubPicture *sp;
1777     AVPacket pkt1, *pkt = &pkt1;
1778     int got_subtitle;
1779     double pts;
1780     int i, j;
1781     int r, g, b, y, u, v, a;
1782
1783     for (;;) {
1784         while (is->paused && !is->subtitleq.abort_request) {
1785             SDL_Delay(10);
1786         }
1787         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1788             break;
1789
1790         if (pkt->data == flush_pkt.data) {
1791             avcodec_flush_buffers(is->subtitle_st->codec);
1792             continue;
1793         }
1794         SDL_LockMutex(is->subpq_mutex);
1795         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1796                !is->subtitleq.abort_request) {
1797             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1798         }
1799         SDL_UnlockMutex(is->subpq_mutex);
1800
1801         if (is->subtitleq.abort_request)
1802             return 0;
1803
1804         sp = &is->subpq[is->subpq_windex];
1805
1806        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1807            this packet, if any */
1808         pts = 0;
1809         if (pkt->pts != AV_NOPTS_VALUE)
1810             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1811
1812         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1813                                  &got_subtitle, pkt);
1814
1815         if (got_subtitle && sp->sub.format == 0) {
1816             sp->pts = pts;
1817
1818             for (i = 0; i < sp->sub.num_rects; i++)
1819             {
1820                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1821                 {
1822                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1823                     y = RGB_TO_Y_CCIR(r, g, b);
1824                     u = RGB_TO_U_CCIR(r, g, b, 0);
1825                     v = RGB_TO_V_CCIR(r, g, b, 0);
1826                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1827                 }
1828             }
1829
1830             /* now we can update the picture count */
1831             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1832                 is->subpq_windex = 0;
1833             SDL_LockMutex(is->subpq_mutex);
1834             is->subpq_size++;
1835             SDL_UnlockMutex(is->subpq_mutex);
1836         }
1837         av_free_packet(pkt);
1838     }
1839     return 0;
1840 }
1841
1842 /* copy samples for viewing in editor window */
1843 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1844 {
1845     int size, len;
1846
1847     size = samples_size / sizeof(short);
1848     while (size > 0) {
1849         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1850         if (len > size)
1851             len = size;
1852         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1853         samples += len;
1854         is->sample_array_index += len;
1855         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1856             is->sample_array_index = 0;
1857         size -= len;
1858     }
1859 }
1860
1861 /* return the wanted number of samples to get better sync if sync_type is video
1862  * or external master clock */
1863 static int synchronize_audio(VideoState *is, int nb_samples)
1864 {
1865     int wanted_nb_samples = nb_samples;
1866
1867     /* if not master, then we try to remove or add samples to correct the clock */
1868     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1869          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1870         double diff, avg_diff;
1871         int min_nb_samples, max_nb_samples;
1872
1873         diff = get_audio_clock(is) - get_master_clock(is);
1874
1875         if (diff < AV_NOSYNC_THRESHOLD) {
1876             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1877             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1878                 /* not enough measures to have a correct estimate */
1879                 is->audio_diff_avg_count++;
1880             } else {
1881                 /* estimate the A-V difference */
1882                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1883
1884                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1885                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
1886                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1887                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1888                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
1889                 }
1890                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1891                         diff, avg_diff, wanted_nb_samples - nb_samples,
1892                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1893             }
1894         } else {
1895             /* too big difference : may be initial PTS errors, so
1896                reset A-V filter */
1897             is->audio_diff_avg_count = 0;
1898             is->audio_diff_cum       = 0;
1899         }
1900     }
1901
1902     return wanted_nb_samples;
1903 }
1904
1905 /* decode one audio frame and returns its uncompressed size */
1906 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1907 {
1908     AVPacket *pkt_temp = &is->audio_pkt_temp;
1909     AVPacket *pkt = &is->audio_pkt;
1910     AVCodecContext *dec = is->audio_st->codec;
1911     int len1, len2, data_size, resampled_data_size;
1912     int64_t dec_channel_layout;
1913     int got_frame;
1914     double pts;
1915     int new_packet = 0;
1916     int flush_complete = 0;
1917     int wanted_nb_samples;
1918
1919     for (;;) {
1920         /* NOTE: the audio packet can contain several frames */
1921         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1922             if (!is->frame) {
1923                 if (!(is->frame = avcodec_alloc_frame()))
1924                     return AVERROR(ENOMEM);
1925             } else
1926                 avcodec_get_frame_defaults(is->frame);
1927
1928             if (is->paused)
1929                 return -1;
1930
1931             if (flush_complete)
1932                 break;
1933             new_packet = 0;
1934             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1935             if (len1 < 0) {
1936                 /* if error, we skip the frame */
1937                 pkt_temp->size = 0;
1938                 break;
1939             }
1940
1941             pkt_temp->data += len1;
1942             pkt_temp->size -= len1;
1943
1944             if (!got_frame) {
1945                 /* stop sending empty packets if the decoder is finished */
1946                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1947                     flush_complete = 1;
1948                 continue;
1949             }
1950             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1951                                                    is->frame->nb_samples,
1952                                                    dec->sample_fmt, 1);
1953
1954             dec_channel_layout =
1955                 (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ?
1956                 dec->channel_layout : av_get_default_channel_layout(dec->channels);
1957             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1958
1959             if (dec->sample_fmt    != is->audio_src.fmt            ||
1960                 dec_channel_layout != is->audio_src.channel_layout ||
1961                 dec->sample_rate   != is->audio_src.freq           ||
1962                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1963                 swr_free(&is->swr_ctx);
1964                 is->swr_ctx = swr_alloc_set_opts(NULL,
1965                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1966                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1967                                                  0, NULL);
1968                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1969                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1970                         dec->sample_rate,   av_get_sample_fmt_name(dec->sample_fmt),   dec->channels,
1971                         is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
1972                     break;
1973                 }
1974                 is->audio_src.channel_layout = dec_channel_layout;
1975                 is->audio_src.channels = dec->channels;
1976                 is->audio_src.freq = dec->sample_rate;
1977                 is->audio_src.fmt = dec->sample_fmt;
1978             }
1979
1980             if (is->swr_ctx) {
1981                 const uint8_t *in[] = { is->frame->data[0] };
1982                 uint8_t *out[] = {is->audio_buf2};
1983                 int out_count = sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt);
1984                 if (wanted_nb_samples != is->frame->nb_samples) {
1985                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1986                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1987                         fprintf(stderr, "swr_set_compensation() failed\n");
1988                         break;
1989                     }
1990                 }
1991                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
1992                 if (len2 < 0) {
1993                     fprintf(stderr, "swr_convert() failed\n");
1994                     break;
1995                 }
1996                 if (len2 == out_count) {
1997                     fprintf(stderr, "warning: audio buffer is probably too small\n");
1998                     swr_init(is->swr_ctx);
1999                 }
2000                 is->audio_buf = is->audio_buf2;
2001                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2002             } else {
2003                 is->audio_buf = is->frame->data[0];
2004                 resampled_data_size = data_size;
2005             }
2006
2007             /* if no pts, then compute it */
2008             pts = is->audio_clock;
2009             *pts_ptr = pts;
2010             is->audio_clock += (double)data_size /
2011                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2012 #ifdef DEBUG
2013             {
2014                 static double last_clock;
2015                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2016                        is->audio_clock - last_clock,
2017                        is->audio_clock, pts);
2018                 last_clock = is->audio_clock;
2019             }
2020 #endif
2021             return resampled_data_size;
2022         }
2023
2024         /* free the current packet */
2025         if (pkt->data)
2026             av_free_packet(pkt);
2027         memset(pkt_temp, 0, sizeof(*pkt_temp));
2028
2029         if (is->paused || is->audioq.abort_request) {
2030             return -1;
2031         }
2032
2033         /* read next packet */
2034         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2035             return -1;
2036
2037         if (pkt->data == flush_pkt.data) {
2038             avcodec_flush_buffers(dec);
2039             flush_complete = 0;
2040         }
2041
2042         *pkt_temp = *pkt;
2043
2044         /* if update the audio clock with the pts */
2045         if (pkt->pts != AV_NOPTS_VALUE) {
2046             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2047         }
2048     }
2049 }
2050
2051 /* prepare a new audio buffer */
2052 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2053 {
2054     VideoState *is = opaque;
2055     int audio_size, len1;
2056     int bytes_per_sec;
2057     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2058     double pts;
2059
2060     audio_callback_time = av_gettime();
2061
2062     while (len > 0) {
2063         if (is->audio_buf_index >= is->audio_buf_size) {
2064            audio_size = audio_decode_frame(is, &pts);
2065            if (audio_size < 0) {
2066                 /* if error, just output silence */
2067                is->audio_buf      = is->silence_buf;
2068                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2069            } else {
2070                if (is->show_mode != SHOW_MODE_VIDEO)
2071                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2072                is->audio_buf_size = audio_size;
2073            }
2074            is->audio_buf_index = 0;
2075         }
2076         len1 = is->audio_buf_size - is->audio_buf_index;
2077         if (len1 > len)
2078             len1 = len;
2079         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2080         len -= len1;
2081         stream += len1;
2082         is->audio_buf_index += len1;
2083     }
2084     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2085     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2086     /* Let's assume the audio driver that is used by SDL has two periods. */
2087     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2088     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2089 }
2090
2091 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2092 {
2093     SDL_AudioSpec wanted_spec, spec;
2094     const char *env;
2095     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2096
2097     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2098     if (env) {
2099         wanted_nb_channels = SDL_atoi(env);
2100         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2101     }
2102     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2103         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2104         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2105     }
2106     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2107     wanted_spec.freq = wanted_sample_rate;
2108     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2109         fprintf(stderr, "Invalid sample rate or channel count!\n");
2110         return -1;
2111     }
2112     wanted_spec.format = AUDIO_S16SYS;
2113     wanted_spec.silence = 0;
2114     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2115     wanted_spec.callback = sdl_audio_callback;
2116     wanted_spec.userdata = opaque;
2117     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2118         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2119         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2120         if (!wanted_spec.channels) {
2121             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2122             return -1;
2123         }
2124         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2125     }
2126     if (spec.format != AUDIO_S16SYS) {
2127         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2128         return -1;
2129     }
2130     if (spec.channels != wanted_spec.channels) {
2131         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2132         if (!wanted_channel_layout) {
2133             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2134             return -1;
2135         }
2136     }
2137
2138     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2139     audio_hw_params->freq = spec.freq;
2140     audio_hw_params->channel_layout = wanted_channel_layout;
2141     audio_hw_params->channels =  spec.channels;
2142     return spec.size;
2143 }
2144
2145 /* open a given stream. Return 0 if OK */
2146 static int stream_component_open(VideoState *is, int stream_index)
2147 {
2148     AVFormatContext *ic = is->ic;
2149     AVCodecContext *avctx;
2150     AVCodec *codec;
2151     AVDictionary *opts;
2152     AVDictionaryEntry *t = NULL;
2153
2154     if (stream_index < 0 || stream_index >= ic->nb_streams)
2155         return -1;
2156     avctx = ic->streams[stream_index]->codec;
2157
2158     codec = avcodec_find_decoder(avctx->codec_id);
2159     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2160
2161     switch(avctx->codec_type){
2162         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2163         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2164         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2165     }
2166     if (!codec)
2167         return -1;
2168
2169     avctx->workaround_bugs   = workaround_bugs;
2170     avctx->lowres            = lowres;
2171     if(avctx->lowres > codec->max_lowres){
2172         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2173                 codec->max_lowres);
2174         avctx->lowres= codec->max_lowres;
2175     }
2176     avctx->idct_algo         = idct;
2177     avctx->skip_frame        = skip_frame;
2178     avctx->skip_idct         = skip_idct;
2179     avctx->skip_loop_filter  = skip_loop_filter;
2180     avctx->error_concealment = error_concealment;
2181
2182     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2183     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2184     if(codec->capabilities & CODEC_CAP_DR1)
2185         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2186
2187     if (!av_dict_get(opts, "threads", NULL, 0))
2188         av_dict_set(&opts, "threads", "auto", 0);
2189     if (!codec ||
2190         avcodec_open2(avctx, codec, &opts) < 0)
2191         return -1;
2192     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2193         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2194         return AVERROR_OPTION_NOT_FOUND;
2195     }
2196
2197     /* prepare audio output */
2198     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2199         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2200         if (audio_hw_buf_size < 0)
2201             return -1;
2202         is->audio_hw_buf_size = audio_hw_buf_size;
2203         is->audio_tgt = is->audio_src;
2204     }
2205
2206     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2207     switch (avctx->codec_type) {
2208     case AVMEDIA_TYPE_AUDIO:
2209         is->audio_stream = stream_index;
2210         is->audio_st = ic->streams[stream_index];
2211         is->audio_buf_size  = 0;
2212         is->audio_buf_index = 0;
2213
2214         /* init averaging filter */
2215         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2216         is->audio_diff_avg_count = 0;
2217         /* since we do not have a precise anough audio fifo fullness,
2218            we correct audio sync only if larger than this threshold */
2219         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);
2220
2221         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2222         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2223         packet_queue_start(&is->audioq);
2224         SDL_PauseAudio(0);
2225         break;
2226     case AVMEDIA_TYPE_VIDEO:
2227         is->video_stream = stream_index;
2228         is->video_st = ic->streams[stream_index];
2229
2230         packet_queue_start(&is->videoq);
2231         is->video_tid = SDL_CreateThread(video_thread, is);
2232         break;
2233     case AVMEDIA_TYPE_SUBTITLE:
2234         is->subtitle_stream = stream_index;
2235         is->subtitle_st = ic->streams[stream_index];
2236         packet_queue_start(&is->subtitleq);
2237
2238         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2239         break;
2240     default:
2241         break;
2242     }
2243     return 0;
2244 }
2245
2246 static void stream_component_close(VideoState *is, int stream_index)
2247 {
2248     AVFormatContext *ic = is->ic;
2249     AVCodecContext *avctx;
2250
2251     if (stream_index < 0 || stream_index >= ic->nb_streams)
2252         return;
2253     avctx = ic->streams[stream_index]->codec;
2254
2255     switch (avctx->codec_type) {
2256     case AVMEDIA_TYPE_AUDIO:
2257         packet_queue_abort(&is->audioq);
2258
2259         SDL_CloseAudio();
2260
2261         packet_queue_flush(&is->audioq);
2262         av_free_packet(&is->audio_pkt);
2263         swr_free(&is->swr_ctx);
2264         av_freep(&is->audio_buf1);
2265         is->audio_buf = NULL;
2266         av_freep(&is->frame);
2267
2268         if (is->rdft) {
2269             av_rdft_end(is->rdft);
2270             av_freep(&is->rdft_data);
2271             is->rdft = NULL;
2272             is->rdft_bits = 0;
2273         }
2274         break;
2275     case AVMEDIA_TYPE_VIDEO:
2276         packet_queue_abort(&is->videoq);
2277
2278         /* note: we also signal this mutex to make sure we deblock the
2279            video thread in all cases */
2280         SDL_LockMutex(is->pictq_mutex);
2281         SDL_CondSignal(is->pictq_cond);
2282         SDL_UnlockMutex(is->pictq_mutex);
2283
2284         SDL_WaitThread(is->video_tid, NULL);
2285
2286         packet_queue_flush(&is->videoq);
2287         break;
2288     case AVMEDIA_TYPE_SUBTITLE:
2289         packet_queue_abort(&is->subtitleq);
2290
2291         /* note: we also signal this mutex to make sure we deblock the
2292            video thread in all cases */
2293         SDL_LockMutex(is->subpq_mutex);
2294         is->subtitle_stream_changed = 1;
2295
2296         SDL_CondSignal(is->subpq_cond);
2297         SDL_UnlockMutex(is->subpq_mutex);
2298
2299         SDL_WaitThread(is->subtitle_tid, NULL);
2300
2301         packet_queue_flush(&is->subtitleq);
2302         break;
2303     default:
2304         break;
2305     }
2306
2307     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2308     avcodec_close(avctx);
2309 #if CONFIG_AVFILTER
2310     free_buffer_pool(&is->buffer_pool);
2311 #endif
2312     switch (avctx->codec_type) {
2313     case AVMEDIA_TYPE_AUDIO:
2314         is->audio_st = NULL;
2315         is->audio_stream = -1;
2316         break;
2317     case AVMEDIA_TYPE_VIDEO:
2318         is->video_st = NULL;
2319         is->video_stream = -1;
2320         break;
2321     case AVMEDIA_TYPE_SUBTITLE:
2322         is->subtitle_st = NULL;
2323         is->subtitle_stream = -1;
2324         break;
2325     default:
2326         break;
2327     }
2328 }
2329
2330 static int decode_interrupt_cb(void *ctx)
2331 {
2332     VideoState *is = ctx;
2333     return is->abort_request;
2334 }
2335
2336 /* this thread gets the stream from the disk or the network */
2337 static int read_thread(void *arg)
2338 {
2339     VideoState *is = arg;
2340     AVFormatContext *ic = NULL;
2341     int err, i, ret;
2342     int st_index[AVMEDIA_TYPE_NB];
2343     AVPacket pkt1, *pkt = &pkt1;
2344     int eof = 0;
2345     int pkt_in_play_range = 0;
2346     AVDictionaryEntry *t;
2347     AVDictionary **opts;
2348     int orig_nb_streams;
2349
2350     memset(st_index, -1, sizeof(st_index));
2351     is->last_video_stream = is->video_stream = -1;
2352     is->last_audio_stream = is->audio_stream = -1;
2353     is->last_subtitle_stream = is->subtitle_stream = -1;
2354
2355     ic = avformat_alloc_context();
2356     ic->interrupt_callback.callback = decode_interrupt_cb;
2357     ic->interrupt_callback.opaque = is;
2358     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2359     if (err < 0) {
2360         print_error(is->filename, err);
2361         ret = -1;
2362         goto fail;
2363     }
2364     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2365         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2366         ret = AVERROR_OPTION_NOT_FOUND;
2367         goto fail;
2368     }
2369     is->ic = ic;
2370
2371     if (genpts)
2372         ic->flags |= AVFMT_FLAG_GENPTS;
2373
2374     opts = setup_find_stream_info_opts(ic, codec_opts);
2375     orig_nb_streams = ic->nb_streams;
2376
2377     err = avformat_find_stream_info(ic, opts);
2378     if (err < 0) {
2379         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2380         ret = -1;
2381         goto fail;
2382     }
2383     for (i = 0; i < orig_nb_streams; i++)
2384         av_dict_free(&opts[i]);
2385     av_freep(&opts);
2386
2387     if (ic->pb)
2388         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2389
2390     if (seek_by_bytes < 0)
2391         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2392
2393     /* if seeking requested, we execute it */
2394     if (start_time != AV_NOPTS_VALUE) {
2395         int64_t timestamp;
2396
2397         timestamp = start_time;
2398         /* add the stream start time */
2399         if (ic->start_time != AV_NOPTS_VALUE)
2400             timestamp += ic->start_time;
2401         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2402         if (ret < 0) {
2403             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2404                     is->filename, (double)timestamp / AV_TIME_BASE);
2405         }
2406     }
2407
2408     for (i = 0; i < ic->nb_streams; i++)
2409         ic->streams[i]->discard = AVDISCARD_ALL;
2410     if (!video_disable)
2411         st_index[AVMEDIA_TYPE_VIDEO] =
2412             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2413                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2414     if (!audio_disable)
2415         st_index[AVMEDIA_TYPE_AUDIO] =
2416             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2417                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2418                                 st_index[AVMEDIA_TYPE_VIDEO],
2419                                 NULL, 0);
2420     if (!video_disable)
2421         st_index[AVMEDIA_TYPE_SUBTITLE] =
2422             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2423                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2424                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2425                                  st_index[AVMEDIA_TYPE_AUDIO] :
2426                                  st_index[AVMEDIA_TYPE_VIDEO]),
2427                                 NULL, 0);
2428     if (show_status) {
2429         av_dump_format(ic, 0, is->filename, 0);
2430     }
2431
2432     is->show_mode = show_mode;
2433
2434     /* open the streams */
2435     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2436         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2437     }
2438
2439     ret = -1;
2440     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2441         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2442     }
2443     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2444     if (is->show_mode == SHOW_MODE_NONE)
2445         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2446
2447     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2448         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2449     }
2450
2451     if (is->video_stream < 0 && is->audio_stream < 0) {
2452         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2453         ret = -1;
2454         goto fail;
2455     }
2456
2457     for (;;) {
2458         if (is->abort_request)
2459             break;
2460         if (is->paused != is->last_paused) {
2461             is->last_paused = is->paused;
2462             if (is->paused)
2463                 is->read_pause_return = av_read_pause(ic);
2464             else
2465                 av_read_play(ic);
2466         }
2467 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2468         if (is->paused &&
2469                 (!strcmp(ic->iformat->name, "rtsp") ||
2470                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2471             /* wait 10 ms to avoid trying to get another packet */
2472             /* XXX: horrible */
2473             SDL_Delay(10);
2474             continue;
2475         }
2476 #endif
2477         if (is->seek_req) {
2478             int64_t seek_target = is->seek_pos;
2479             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2480             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2481 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2482 //      of the seek_pos/seek_rel variables
2483
2484             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2485             if (ret < 0) {
2486                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2487             } else {
2488                 if (is->audio_stream >= 0) {
2489                     packet_queue_flush(&is->audioq);
2490                     packet_queue_put(&is->audioq, &flush_pkt);
2491                 }
2492                 if (is->subtitle_stream >= 0) {
2493                     packet_queue_flush(&is->subtitleq);
2494                     packet_queue_put(&is->subtitleq, &flush_pkt);
2495                 }
2496                 if (is->video_stream >= 0) {
2497                     packet_queue_flush(&is->videoq);
2498                     packet_queue_put(&is->videoq, &flush_pkt);
2499                 }
2500             }
2501             is->seek_req = 0;
2502             eof = 0;
2503         }
2504
2505         /* if the queue are full, no need to read more */
2506         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2507             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2508                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2509                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2510             /* wait 10 ms */
2511             SDL_Delay(10);
2512             continue;
2513         }
2514         if (eof) {
2515             if (is->video_stream >= 0) {
2516                 av_init_packet(pkt);
2517                 pkt->data = NULL;
2518                 pkt->size = 0;
2519                 pkt->stream_index = is->video_stream;
2520                 packet_queue_put(&is->videoq, pkt);
2521             }
2522             if (is->audio_stream >= 0 &&
2523                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2524                 av_init_packet(pkt);
2525                 pkt->data = NULL;
2526                 pkt->size = 0;
2527                 pkt->stream_index = is->audio_stream;
2528                 packet_queue_put(&is->audioq, pkt);
2529             }
2530             SDL_Delay(10);
2531             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2532                 if (loop != 1 && (!loop || --loop)) {
2533                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2534                 } else if (autoexit) {
2535                     ret = AVERROR_EOF;
2536                     goto fail;
2537                 }
2538             }
2539             eof=0;
2540             continue;
2541         }
2542         ret = av_read_frame(ic, pkt);
2543         if (ret < 0) {
2544             if (ret == AVERROR_EOF || url_feof(ic->pb))
2545                 eof = 1;
2546             if (ic->pb && ic->pb->error)
2547                 break;
2548             SDL_Delay(100); /* wait for user event */
2549             continue;
2550         }
2551         /* check if packet is in play range specified by user, then queue, otherwise discard */
2552         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2553                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2554                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2555                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2556                 <= ((double)duration / 1000000);
2557         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2558             packet_queue_put(&is->audioq, pkt);
2559         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2560             packet_queue_put(&is->videoq, pkt);
2561         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2562             packet_queue_put(&is->subtitleq, pkt);
2563         } else {
2564             av_free_packet(pkt);
2565         }
2566     }
2567     /* wait until the end */
2568     while (!is->abort_request) {
2569         SDL_Delay(100);
2570     }
2571
2572     ret = 0;
2573  fail:
2574     /* close each stream */
2575     if (is->audio_stream >= 0)
2576         stream_component_close(is, is->audio_stream);
2577     if (is->video_stream >= 0)
2578         stream_component_close(is, is->video_stream);
2579     if (is->subtitle_stream >= 0)
2580         stream_component_close(is, is->subtitle_stream);
2581     if (is->ic) {
2582         avformat_close_input(&is->ic);
2583     }
2584
2585     if (ret != 0) {
2586         SDL_Event event;
2587
2588         event.type = FF_QUIT_EVENT;
2589         event.user.data1 = is;
2590         SDL_PushEvent(&event);
2591     }
2592     return 0;
2593 }
2594
2595 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2596 {
2597     VideoState *is;
2598
2599     is = av_mallocz(sizeof(VideoState));
2600     if (!is)
2601         return NULL;
2602     av_strlcpy(is->filename, filename, sizeof(is->filename));
2603     is->iformat = iformat;
2604     is->ytop    = 0;
2605     is->xleft   = 0;
2606
2607     /* start video display */
2608     is->pictq_mutex = SDL_CreateMutex();
2609     is->pictq_cond  = SDL_CreateCond();
2610
2611     is->subpq_mutex = SDL_CreateMutex();
2612     is->subpq_cond  = SDL_CreateCond();
2613
2614     packet_queue_init(&is->videoq);
2615     packet_queue_init(&is->audioq);
2616     packet_queue_init(&is->subtitleq);
2617
2618     is->av_sync_type = av_sync_type;
2619     is->read_tid     = SDL_CreateThread(read_thread, is);
2620     if (!is->read_tid) {
2621         av_free(is);
2622         return NULL;
2623     }
2624     return is;
2625 }
2626
2627 static void stream_cycle_channel(VideoState *is, int codec_type)
2628 {
2629     AVFormatContext *ic = is->ic;
2630     int start_index, stream_index;
2631     int old_index;
2632     AVStream *st;
2633
2634     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2635         start_index = is->last_video_stream;
2636         old_index = is->video_stream;
2637     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2638         start_index = is->last_audio_stream;
2639         old_index = is->audio_stream;
2640     } else {
2641         start_index = is->last_subtitle_stream;
2642         old_index = is->subtitle_stream;
2643     }
2644     stream_index = start_index;
2645     for (;;) {
2646         if (++stream_index >= is->ic->nb_streams)
2647         {
2648             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2649             {
2650                 stream_index = -1;
2651                 is->last_subtitle_stream = -1;
2652                 goto the_end;
2653             }
2654             if (start_index == -1)
2655                 return;
2656             stream_index = 0;
2657         }
2658         if (stream_index == start_index)
2659             return;
2660         st = ic->streams[stream_index];
2661         if (st->codec->codec_type == codec_type) {
2662             /* check that parameters are OK */
2663             switch (codec_type) {
2664             case AVMEDIA_TYPE_AUDIO:
2665                 if (st->codec->sample_rate != 0 &&
2666                     st->codec->channels != 0)
2667                     goto the_end;
2668                 break;
2669             case AVMEDIA_TYPE_VIDEO:
2670             case AVMEDIA_TYPE_SUBTITLE:
2671                 goto the_end;
2672             default:
2673                 break;
2674             }
2675         }
2676     }
2677  the_end:
2678     stream_component_close(is, old_index);
2679     stream_component_open(is, stream_index);
2680 }
2681
2682
2683 static void toggle_full_screen(VideoState *is)
2684 {
2685 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2686     /* OS X needs to reallocate the SDL overlays */
2687     int i;
2688     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2689         is->pictq[i].reallocate = 1;
2690 #endif
2691     is_full_screen = !is_full_screen;
2692     video_open(is, 1);
2693 }
2694
2695 static void toggle_pause(VideoState *is)
2696 {
2697     stream_toggle_pause(is);
2698     is->step = 0;
2699 }
2700
2701 static void step_to_next_frame(VideoState *is)
2702 {
2703     /* if the stream is paused unpause it, then step */
2704     if (is->paused)
2705         stream_toggle_pause(is);
2706     is->step = 1;
2707 }
2708
2709 static void toggle_audio_display(VideoState *is)
2710 {
2711     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2712     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2713     fill_rectangle(screen,
2714                 is->xleft, is->ytop, is->width, is->height,
2715                 bgcolor);
2716     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2717 }
2718
2719 /* handle an event sent by the GUI */
2720 static void event_loop(VideoState *cur_stream)
2721 {
2722     SDL_Event event;
2723     double incr, pos, frac;
2724
2725     for (;;) {
2726         double x;
2727         SDL_WaitEvent(&event);
2728         switch (event.type) {
2729         case SDL_KEYDOWN:
2730             if (exit_on_keydown) {
2731                 do_exit(cur_stream);
2732                 break;
2733             }
2734             switch (event.key.keysym.sym) {
2735             case SDLK_ESCAPE:
2736             case SDLK_q:
2737                 do_exit(cur_stream);
2738                 break;
2739             case SDLK_f:
2740                 toggle_full_screen(cur_stream);
2741                 cur_stream->force_refresh = 1;
2742                 break;
2743             case SDLK_p:
2744             case SDLK_SPACE:
2745                 toggle_pause(cur_stream);
2746                 break;
2747             case SDLK_s: // S: Step to next frame
2748                 step_to_next_frame(cur_stream);
2749                 break;
2750             case SDLK_a:
2751                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2752                 break;
2753             case SDLK_v:
2754                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2755                 break;
2756             case SDLK_t:
2757                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2758                 break;
2759             case SDLK_w:
2760                 toggle_audio_display(cur_stream);
2761                 cur_stream->force_refresh = 1;
2762                 break;
2763             case SDLK_PAGEUP:
2764                 incr = 600.0;
2765                 goto do_seek;
2766             case SDLK_PAGEDOWN:
2767                 incr = -600.0;
2768                 goto do_seek;
2769             case SDLK_LEFT:
2770                 incr = -10.0;
2771                 goto do_seek;
2772             case SDLK_RIGHT:
2773                 incr = 10.0;
2774                 goto do_seek;
2775             case SDLK_UP:
2776                 incr = 60.0;
2777                 goto do_seek;
2778             case SDLK_DOWN:
2779                 incr = -60.0;
2780             do_seek:
2781                     if (seek_by_bytes) {
2782                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2783                             pos = cur_stream->video_current_pos;
2784                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2785                             pos = cur_stream->audio_pkt.pos;
2786                         } else
2787                             pos = avio_tell(cur_stream->ic->pb);
2788                         if (cur_stream->ic->bit_rate)
2789                             incr *= cur_stream->ic->bit_rate / 8.0;
2790                         else
2791                             incr *= 180000.0;
2792                         pos += incr;
2793                         stream_seek(cur_stream, pos, incr, 1);
2794                     } else {
2795                         pos = get_master_clock(cur_stream);
2796                         pos += incr;
2797                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2798                     }
2799                 break;
2800             default:
2801                 break;
2802             }
2803             break;
2804         case SDL_VIDEOEXPOSE:
2805             cur_stream->force_refresh = 1;
2806             break;
2807         case SDL_MOUSEBUTTONDOWN:
2808             if (exit_on_mousedown) {
2809                 do_exit(cur_stream);
2810                 break;
2811             }
2812         case SDL_MOUSEMOTION:
2813             if (event.type == SDL_MOUSEBUTTONDOWN) {
2814                 x = event.button.x;
2815             } else {
2816                 if (event.motion.state != SDL_PRESSED)
2817                     break;
2818                 x = event.motion.x;
2819             }
2820                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2821                     uint64_t size =  avio_size(cur_stream->ic->pb);
2822                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2823                 } else {
2824                     int64_t ts;
2825                     int ns, hh, mm, ss;
2826                     int tns, thh, tmm, tss;
2827                     tns  = cur_stream->ic->duration / 1000000LL;
2828                     thh  = tns / 3600;
2829                     tmm  = (tns % 3600) / 60;
2830                     tss  = (tns % 60);
2831                     frac = x / cur_stream->width;
2832                     ns   = frac * tns;
2833                     hh   = ns / 3600;
2834                     mm   = (ns % 3600) / 60;
2835                     ss   = (ns % 60);
2836                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2837                             hh, mm, ss, thh, tmm, tss);
2838                     ts = frac * cur_stream->ic->duration;
2839                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2840                         ts += cur_stream->ic->start_time;
2841                     stream_seek(cur_stream, ts, 0, 0);
2842                 }
2843             break;
2844         case SDL_VIDEORESIZE:
2845                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2846                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2847                 screen_width  = cur_stream->width  = event.resize.w;
2848                 screen_height = cur_stream->height = event.resize.h;
2849                 cur_stream->force_refresh = 1;
2850             break;
2851         case SDL_QUIT:
2852         case FF_QUIT_EVENT:
2853             do_exit(cur_stream);
2854             break;
2855         case FF_ALLOC_EVENT:
2856             alloc_picture(event.user.data1);
2857             break;
2858         case FF_REFRESH_EVENT:
2859             video_refresh(event.user.data1);
2860             cur_stream->refresh = 0;
2861             break;
2862         default:
2863             break;
2864         }
2865     }
2866 }
2867
2868 static int opt_frame_size(const char *opt, const char *arg)
2869 {
2870     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2871     return opt_default("video_size", arg);
2872 }
2873
2874 static int opt_width(const char *opt, const char *arg)
2875 {
2876     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2877     return 0;
2878 }
2879
2880 static int opt_height(const char *opt, const char *arg)
2881 {
2882     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2883     return 0;
2884 }
2885
2886 static int opt_format(const char *opt, const char *arg)
2887 {
2888     file_iformat = av_find_input_format(arg);
2889     if (!file_iformat) {
2890         fprintf(stderr, "Unknown input format: %s\n", arg);
2891         return AVERROR(EINVAL);
2892     }
2893     return 0;
2894 }
2895
2896 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2897 {
2898     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2899     return opt_default("pixel_format", arg);
2900 }
2901
2902 static int opt_sync(const char *opt, const char *arg)
2903 {
2904     if (!strcmp(arg, "audio"))
2905         av_sync_type = AV_SYNC_AUDIO_MASTER;
2906     else if (!strcmp(arg, "video"))
2907         av_sync_type = AV_SYNC_VIDEO_MASTER;
2908     else if (!strcmp(arg, "ext"))
2909         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2910     else {
2911         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2912         exit(1);
2913     }
2914     return 0;
2915 }
2916
2917 static int opt_seek(const char *opt, const char *arg)
2918 {
2919     start_time = parse_time_or_die(opt, arg, 1);
2920     return 0;
2921 }
2922
2923 static int opt_duration(const char *opt, const char *arg)
2924 {
2925     duration = parse_time_or_die(opt, arg, 1);
2926     return 0;
2927 }
2928
2929 static int opt_show_mode(const char *opt, const char *arg)
2930 {
2931     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2932                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2933                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2934                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2935     return 0;
2936 }
2937
2938 static void opt_input_file(void *optctx, const char *filename)
2939 {
2940     if (input_filename) {
2941         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2942                 filename, input_filename);
2943         exit_program(1);
2944     }
2945     if (!strcmp(filename, "-"))
2946         filename = "pipe:";
2947     input_filename = filename;
2948 }
2949
2950 static int opt_codec(void *o, const char *opt, const char *arg)
2951 {
2952     switch(opt[strlen(opt)-1]){
2953     case 'a' :    audio_codec_name = arg; break;
2954     case 's' : subtitle_codec_name = arg; break;
2955     case 'v' :    video_codec_name = arg; break;
2956     }
2957     return 0;
2958 }
2959
2960 static int dummy;
2961
2962 static const OptionDef options[] = {
2963 #include "cmdutils_common_opts.h"
2964     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2965     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2966     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2967     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2968     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2969     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2970     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2971     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2972     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2973     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2974     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2975     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2976     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2977     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2978     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2979     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2980     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2981     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2982     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2983     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2984     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2985     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2986     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2987     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2988     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2989     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2990     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2991     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2992     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2993     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2994     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
2995     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
2996     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
2997 #if CONFIG_AVFILTER
2998     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
2999 #endif
3000     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
3001     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3002     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
3003     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
3004     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
3005     { NULL, },
3006 };
3007
3008 static void show_usage(void)
3009 {
3010     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3011     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3012     av_log(NULL, AV_LOG_INFO, "\n");
3013 }
3014
3015 static int opt_help(const char *opt, const char *arg)
3016 {
3017     av_log_set_callback(log_callback_help);
3018     show_usage();
3019     show_help_options(options, "Main options:\n",
3020                       OPT_EXPERT, 0);
3021     show_help_options(options, "\nAdvanced options:\n",
3022                       OPT_EXPERT, OPT_EXPERT);
3023     printf("\n");
3024     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3025     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3026 #if !CONFIG_AVFILTER
3027     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3028 #endif
3029     printf("\nWhile playing:\n"
3030            "q, ESC              quit\n"
3031            "f                   toggle full screen\n"
3032            "p, SPC              pause\n"
3033            "a                   cycle audio channel\n"
3034            "v                   cycle video channel\n"
3035            "t                   cycle subtitle channel\n"
3036            "w                   show audio waves\n"
3037            "s                   activate frame-step mode\n"
3038            "left/right          seek backward/forward 10 seconds\n"
3039            "down/up             seek backward/forward 1 minute\n"
3040            "page down/page up   seek backward/forward 10 minutes\n"
3041            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3042            );
3043     return 0;
3044 }
3045
3046 static int lockmgr(void **mtx, enum AVLockOp op)
3047 {
3048    switch(op) {
3049       case AV_LOCK_CREATE:
3050           *mtx = SDL_CreateMutex();
3051           if(!*mtx)
3052               return 1;
3053           return 0;
3054       case AV_LOCK_OBTAIN:
3055           return !!SDL_LockMutex(*mtx);
3056       case AV_LOCK_RELEASE:
3057           return !!SDL_UnlockMutex(*mtx);
3058       case AV_LOCK_DESTROY:
3059           SDL_DestroyMutex(*mtx);
3060           return 0;
3061    }
3062    return 1;
3063 }
3064
3065 /* Called from the main */
3066 int main(int argc, char **argv)
3067 {
3068     int flags;
3069     VideoState *is;
3070     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3071
3072     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3073     parse_loglevel(argc, argv, options);
3074
3075     /* register all codecs, demux and protocols */
3076     avcodec_register_all();
3077 #if CONFIG_AVDEVICE
3078     avdevice_register_all();
3079 #endif
3080 #if CONFIG_AVFILTER
3081     avfilter_register_all();
3082 #endif
3083     av_register_all();
3084     avformat_network_init();
3085
3086     init_opts();
3087
3088     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3089     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3090
3091     show_banner(argc, argv, options);
3092
3093     parse_options(NULL, argc, argv, options, opt_input_file);
3094
3095     if (!input_filename) {
3096         show_usage();
3097         fprintf(stderr, "An input file must be specified\n");
3098         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3099         exit(1);
3100     }
3101
3102     if (display_disable) {
3103         video_disable = 1;
3104     }
3105     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3106     if (audio_disable)
3107         flags &= ~SDL_INIT_AUDIO;
3108     if (display_disable)
3109         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3110 #if !defined(__MINGW32__) && !defined(__APPLE__)
3111     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3112 #endif
3113     if (SDL_Init (flags)) {
3114         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3115         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3116         exit(1);
3117     }
3118
3119     if (!display_disable) {
3120 #if HAVE_SDL_VIDEO_SIZE
3121         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3122         fs_screen_width = vi->current_w;
3123         fs_screen_height = vi->current_h;
3124 #endif
3125     }
3126
3127     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3128     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3129     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3130
3131     if (av_lockmgr_register(lockmgr)) {
3132         fprintf(stderr, "Could not initialize lock manager!\n");
3133         do_exit(NULL);
3134     }
3135
3136     av_init_packet(&flush_pkt);
3137     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3138
3139     is = stream_open(input_filename, file_iformat);
3140     if (!is) {
3141         fprintf(stderr, "Failed to initialize VideoState!\n");
3142         do_exit(NULL);
3143     }
3144
3145     event_loop(is);
3146
3147     /* never returns */
3148
3149     return 0;
3150 }