git.sesse.net Git - ffmpeg/blob - avplay.c

   1 /*
   2  * avplay : Simple Media Player based on the Libav libraries
   3  * Copyright (c) 2003 Fabrice Bellard
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * Libav is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with Libav; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include "config.h"
  23 #include <inttypes.h>
  24 #include <math.h>
  25 #include <limits.h>
  26 #include "libavutil/avstring.h"
  27 #include "libavutil/colorspace.h"
  28 #include "libavutil/mathematics.h"
  29 #include "libavutil/pixdesc.h"
  30 #include "libavutil/imgutils.h"
  31 #include "libavutil/dict.h"
  32 #include "libavutil/parseutils.h"
  33 #include "libavutil/samplefmt.h"
  34 #include "libavutil/time.h"
  35 #include "libavformat/avformat.h"
  36 #include "libavdevice/avdevice.h"
  37 #include "libswscale/swscale.h"
  38 #include "libavresample/avresample.h"
  39 #include "libavutil/opt.h"
  40 #include "libavcodec/avfft.h"
  41
  42 #if CONFIG_AVFILTER
  43 # include "libavfilter/avfilter.h"
  44 # include "libavfilter/buffersink.h"
  45 # include "libavfilter/buffersrc.h"
  46 #endif
  47
  48 #include "cmdutils.h"
  49
  50 #include <SDL.h>
  51 #include <SDL_thread.h>
  52
  53 #ifdef __MINGW32__
  54 #undef main /* We don't want SDL to override our main() */
  55 #endif
  56
  57 #include <assert.h>
  58
  59 const char program_name[] = "avplay";
  60 const int program_birth_year = 2003;
  61
  62 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
  63 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
  64 #define MIN_FRAMES 5
  65
  66 /* SDL audio buffer size, in samples. Should be small to have precise
  67    A/V sync as SDL does not have hardware buffer fullness info. */
  68 #define SDL_AUDIO_BUFFER_SIZE 1024
  69
  70 /* no AV sync correction is done if below the AV sync threshold */
  71 #define AV_SYNC_THRESHOLD 0.01
  72 /* no AV correction is done if too big error */
  73 #define AV_NOSYNC_THRESHOLD 10.0
  74
  75 #define FRAME_SKIP_FACTOR 0.05
  76
  77 /* maximum audio speed change to get correct sync */
  78 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  79
  80 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  81 #define AUDIO_DIFF_AVG_NB   20
  82
  83 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
  84 #define SAMPLE_ARRAY_SIZE (2 * 65536)
  85
  86 static int64_t sws_flags = SWS_BICUBIC;
  87
  88 typedef struct PacketQueue {
  89     AVPacketList *first_pkt, *last_pkt;
  90     int nb_packets;
  91     int size;
  92     int abort_request;
  93     SDL_mutex *mutex;
  94     SDL_cond *cond;
  95 } PacketQueue;
  96
  97 #define VIDEO_PICTURE_QUEUE_SIZE 2
  98 #define SUBPICTURE_QUEUE_SIZE 4
  99
 100 typedef struct VideoPicture {
 101     double pts;             // presentation timestamp for this picture
 102     double target_clock;    // av_gettime() time at which this should be displayed ideally
 103     int64_t pos;            // byte position in file
 104     SDL_Overlay *bmp;
 105     int width, height; /* source height & width */
 106     int allocated;
 107     int reallocate;
 108     enum AVPixelFormat pix_fmt;
 109
 110     AVRational sar;
 111 } VideoPicture;
 112
 113 typedef struct SubPicture {
 114     double pts; /* presentation time stamp for this picture */
 115     AVSubtitle sub;
 116 } SubPicture;
 117
 118 enum {
 119     AV_SYNC_AUDIO_MASTER, /* default choice */
 120     AV_SYNC_VIDEO_MASTER,
 121     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 122 };
 123
 124 typedef struct VideoState {
 125     SDL_Thread *parse_tid;
 126     SDL_Thread *video_tid;
 127     SDL_Thread *refresh_tid;
 128     AVInputFormat *iformat;
 129     int no_background;
 130     int abort_request;
 131     int paused;
 132     int last_paused;
 133     int seek_req;
 134     int seek_flags;
 135     int64_t seek_pos;
 136     int64_t seek_rel;
 137     int read_pause_return;
 138     AVFormatContext *ic;
 139
 140     int audio_stream;
 141
 142     int av_sync_type;
 143     double external_clock; /* external clock base */
 144     int64_t external_clock_time;
 145
 146     double audio_clock;
 147     double audio_diff_cum; /* used for AV difference average computation */
 148     double audio_diff_avg_coef;
 149     double audio_diff_threshold;
 150     int audio_diff_avg_count;
 151     AVStream *audio_st;
 152     PacketQueue audioq;
 153     int audio_hw_buf_size;
 154     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
 155     uint8_t *audio_buf;
 156     uint8_t *audio_buf1;
 157     unsigned int audio_buf_size; /* in bytes */
 158     int audio_buf_index; /* in bytes */
 159     AVPacket audio_pkt_temp;
 160     AVPacket audio_pkt;
 161     enum AVSampleFormat sdl_sample_fmt;
 162     uint64_t sdl_channel_layout;
 163     int sdl_channels;
 164     int sdl_sample_rate;
 165     enum AVSampleFormat resample_sample_fmt;
 166     uint64_t resample_channel_layout;
 167     int resample_sample_rate;
 168     AVAudioResampleContext *avr;
 169     AVFrame *frame;
 170
 171     int show_audio; /* if true, display audio samples */
 172     int16_t sample_array[SAMPLE_ARRAY_SIZE];
 173     int sample_array_index;
 174     int last_i_start;
 175     RDFTContext *rdft;
 176     int rdft_bits;
 177     FFTSample *rdft_data;
 178     int xpos;
 179
 180     SDL_Thread *subtitle_tid;
 181     int subtitle_stream;
 182     int subtitle_stream_changed;
 183     AVStream *subtitle_st;
 184     PacketQueue subtitleq;
 185     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
 186     int subpq_size, subpq_rindex, subpq_windex;
 187     SDL_mutex *subpq_mutex;
 188     SDL_cond *subpq_cond;
 189
 190     double frame_timer;
 191     double frame_last_pts;
 192     double frame_last_delay;
 193     double video_clock;             // pts of last decoded frame / predicted pts of next decoded frame
 194     int video_stream;
 195     AVStream *video_st;
 196     PacketQueue videoq;
 197     double video_current_pts;       // current displayed pts (different from video_clock if frame fifos are used)
 198     double video_current_pts_drift; // video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
 199     int64_t video_current_pos;      // current displayed file pos
 200     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
 201     int pictq_size, pictq_rindex, pictq_windex;
 202     SDL_mutex *pictq_mutex;
 203     SDL_cond *pictq_cond;
 204 #if !CONFIG_AVFILTER
 205     struct SwsContext *img_convert_ctx;
 206 #endif
 207
 208     //    QETimer *video_timer;
 209     char filename[1024];
 210     int width, height, xleft, ytop;
 211
 212     PtsCorrectionContext pts_ctx;
 213
 214 #if CONFIG_AVFILTER
 215     AVFilterContext *in_video_filter;   // the first filter in the video chain
 216     AVFilterContext *out_video_filter;  // the last filter in the video chain
 217 #endif
 218
 219     float skip_frames;
 220     float skip_frames_index;
 221     int refresh;
 222 } VideoState;
 223
 224 /* options specified by the user */
 225 static AVInputFormat *file_iformat;
 226 static const char *input_filename;
 227 static const char *window_title;
 228 static int fs_screen_width;
 229 static int fs_screen_height;
 230 static int screen_width  = 0;
 231 static int screen_height = 0;
 232 static int audio_disable;
 233 static int video_disable;
 234 static int wanted_stream[AVMEDIA_TYPE_NB] = {
 235     [AVMEDIA_TYPE_AUDIO]    = -1,
 236     [AVMEDIA_TYPE_VIDEO]    = -1,
 237     [AVMEDIA_TYPE_SUBTITLE] = -1,
 238 };
 239 static int seek_by_bytes = -1;
 240 static int display_disable;
 241 static int show_status = 1;
 242 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 243 static int64_t start_time = AV_NOPTS_VALUE;
 244 static int64_t duration = AV_NOPTS_VALUE;
 245 static int step = 0;
 246 static int workaround_bugs = 1;
 247 static int fast = 0;
 248 static int genpts = 0;
 249 static int idct = FF_IDCT_AUTO;
 250 static enum AVDiscard skip_frame       = AVDISCARD_DEFAULT;
 251 static enum AVDiscard skip_idct        = AVDISCARD_DEFAULT;
 252 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
 253 static int error_concealment = 3;
 254 static int decoder_reorder_pts = -1;
 255 static int autoexit;
 256 static int exit_on_keydown;
 257 static int exit_on_mousedown;
 258 static int loop = 1;
 259 static int framedrop = 1;
 260 static int infinite_buffer = 0;
 261
 262 static int rdftspeed = 20;
 263 #if CONFIG_AVFILTER
 264 static char *vfilters = NULL;
 265 #endif
 266
 267 /* current context */
 268 static int is_full_screen;
 269 static VideoState *cur_stream;
 270 static int64_t audio_callback_time;
 271
 272 static AVPacket flush_pkt;
 273
 274 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 275 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
 276 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 277
 278 static SDL_Surface *screen;
 279
 280 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
 281
 282 /* packet queue handling */
 283 static void packet_queue_init(PacketQueue *q)
 284 {
 285     memset(q, 0, sizeof(PacketQueue));
 286     q->mutex = SDL_CreateMutex();
 287     q->cond = SDL_CreateCond();
 288     packet_queue_put(q, &flush_pkt);
 289 }
 290
 291 static void packet_queue_flush(PacketQueue *q)
 292 {
 293     AVPacketList *pkt, *pkt1;
 294
 295     SDL_LockMutex(q->mutex);
 296     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 297         pkt1 = pkt->next;
 298         av_free_packet(&pkt->pkt);
 299         av_freep(&pkt);
 300     }
 301     q->last_pkt = NULL;
 302     q->first_pkt = NULL;
 303     q->nb_packets = 0;
 304     q->size = 0;
 305     SDL_UnlockMutex(q->mutex);
 306 }
 307
 308 static void packet_queue_end(PacketQueue *q)
 309 {
 310     packet_queue_flush(q);
 311     SDL_DestroyMutex(q->mutex);
 312     SDL_DestroyCond(q->cond);
 313 }
 314
 315 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 316 {
 317     AVPacketList *pkt1;
 318
 319     /* duplicate the packet */
 320     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
 321         return -1;
 322
 323     pkt1 = av_malloc(sizeof(AVPacketList));
 324     if (!pkt1)
 325         return -1;
 326     pkt1->pkt = *pkt;
 327     pkt1->next = NULL;
 328
 329
 330     SDL_LockMutex(q->mutex);
 331
 332     if (!q->last_pkt)
 333
 334         q->first_pkt = pkt1;
 335     else
 336         q->last_pkt->next = pkt1;
 337     q->last_pkt = pkt1;
 338     q->nb_packets++;
 339     q->size += pkt1->pkt.size + sizeof(*pkt1);
 340     /* XXX: should duplicate packet data in DV case */
 341     SDL_CondSignal(q->cond);
 342
 343     SDL_UnlockMutex(q->mutex);
 344     return 0;
 345 }
 346
 347 static void packet_queue_abort(PacketQueue *q)
 348 {
 349     SDL_LockMutex(q->mutex);
 350
 351     q->abort_request = 1;
 352
 353     SDL_CondSignal(q->cond);
 354
 355     SDL_UnlockMutex(q->mutex);
 356 }
 357
 358 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 359 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
 360 {
 361     AVPacketList *pkt1;
 362     int ret;
 363
 364     SDL_LockMutex(q->mutex);
 365
 366     for (;;) {
 367         if (q->abort_request) {
 368             ret = -1;
 369             break;
 370         }
 371
 372         pkt1 = q->first_pkt;
 373         if (pkt1) {
 374             q->first_pkt = pkt1->next;
 375             if (!q->first_pkt)
 376                 q->last_pkt = NULL;
 377             q->nb_packets--;
 378             q->size -= pkt1->pkt.size + sizeof(*pkt1);
 379             *pkt = pkt1->pkt;
 380             av_free(pkt1);
 381             ret = 1;
 382             break;
 383         } else if (!block) {
 384             ret = 0;
 385             break;
 386         } else {
 387             SDL_CondWait(q->cond, q->mutex);
 388         }
 389     }
 390     SDL_UnlockMutex(q->mutex);
 391     return ret;
 392 }
 393
 394 static inline void fill_rectangle(SDL_Surface *screen,
 395                                   int x, int y, int w, int h, int color)
 396 {
 397     SDL_Rect rect;
 398     rect.x = x;
 399     rect.y = y;
 400     rect.w = w;
 401     rect.h = h;
 402     SDL_FillRect(screen, &rect, color);
 403 }
 404
 405 #define ALPHA_BLEND(a, oldp, newp, s)\
 406 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 407
 408 #define RGBA_IN(r, g, b, a, s)\
 409 {\
 410     unsigned int v = ((const uint32_t *)(s))[0];\
 411     a = (v >> 24) & 0xff;\
 412     r = (v >> 16) & 0xff;\
 413     g = (v >> 8) & 0xff;\
 414     b = v & 0xff;\
 415 }
 416
 417 #define YUVA_IN(y, u, v, a, s, pal)\
 418 {\
 419     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 420     a = (val >> 24) & 0xff;\
 421     y = (val >> 16) & 0xff;\
 422     u = (val >> 8) & 0xff;\
 423     v = val & 0xff;\
 424 }
 425
 426 #define YUVA_OUT(d, y, u, v, a)\
 427 {\
 428     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 429 }
 430
 431
 432 #define BPP 1
 433
 434 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 435 {
 436     int wrap, wrap3, width2, skip2;
 437     int y, u, v, a, u1, v1, a1, w, h;
 438     uint8_t *lum, *cb, *cr;
 439     const uint8_t *p;
 440     const uint32_t *pal;
 441     int dstx, dsty, dstw, dsth;
 442
 443     dstw = av_clip(rect->w, 0, imgw);
 444     dsth = av_clip(rect->h, 0, imgh);
 445     dstx = av_clip(rect->x, 0, imgw - dstw);
 446     dsty = av_clip(rect->y, 0, imgh - dsth);
 447     lum = dst->data[0] + dsty * dst->linesize[0];
 448     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 449     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 450
 451     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 452     skip2 = dstx >> 1;
 453     wrap = dst->linesize[0];
 454     wrap3 = rect->pict.linesize[0];
 455     p = rect->pict.data[0];
 456     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 457
 458     if (dsty & 1) {
 459         lum += dstx;
 460         cb += skip2;
 461         cr += skip2;
 462
 463         if (dstx & 1) {
 464             YUVA_IN(y, u, v, a, p, pal);
 465             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 466             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 467             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 468             cb++;
 469             cr++;
 470             lum++;
 471             p += BPP;
 472         }
 473         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 474             YUVA_IN(y, u, v, a, p, pal);
 475             u1 = u;
 476             v1 = v;
 477             a1 = a;
 478             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 479
 480             YUVA_IN(y, u, v, a, p + BPP, pal);
 481             u1 += u;
 482             v1 += v;
 483             a1 += a;
 484             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 485             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 486             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 487             cb++;
 488             cr++;
 489             p += 2 * BPP;
 490             lum += 2;
 491         }
 492         if (w) {
 493             YUVA_IN(y, u, v, a, p, pal);
 494             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 495             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 496             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 497             p++;
 498             lum++;
 499         }
 500         p += wrap3 - dstw * BPP;
 501         lum += wrap - dstw - dstx;
 502         cb += dst->linesize[1] - width2 - skip2;
 503         cr += dst->linesize[2] - width2 - skip2;
 504     }
 505     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
 506         lum += dstx;
 507         cb += skip2;
 508         cr += skip2;
 509
 510         if (dstx & 1) {
 511             YUVA_IN(y, u, v, a, p, pal);
 512             u1 = u;
 513             v1 = v;
 514             a1 = a;
 515             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 516             p += wrap3;
 517             lum += wrap;
 518             YUVA_IN(y, u, v, a, p, pal);
 519             u1 += u;
 520             v1 += v;
 521             a1 += a;
 522             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 523             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 524             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 525             cb++;
 526             cr++;
 527             p += -wrap3 + BPP;
 528             lum += -wrap + 1;
 529         }
 530         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 531             YUVA_IN(y, u, v, a, p, pal);
 532             u1 = u;
 533             v1 = v;
 534             a1 = a;
 535             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 536
 537             YUVA_IN(y, u, v, a, p + BPP, pal);
 538             u1 += u;
 539             v1 += v;
 540             a1 += a;
 541             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 542             p += wrap3;
 543             lum += wrap;
 544
 545             YUVA_IN(y, u, v, a, p, pal);
 546             u1 += u;
 547             v1 += v;
 548             a1 += a;
 549             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 550
 551             YUVA_IN(y, u, v, a, p + BPP, pal);
 552             u1 += u;
 553             v1 += v;
 554             a1 += a;
 555             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 556
 557             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 558             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 559
 560             cb++;
 561             cr++;
 562             p += -wrap3 + 2 * BPP;
 563             lum += -wrap + 2;
 564         }
 565         if (w) {
 566             YUVA_IN(y, u, v, a, p, pal);
 567             u1 = u;
 568             v1 = v;
 569             a1 = a;
 570             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 571             p += wrap3;
 572             lum += wrap;
 573             YUVA_IN(y, u, v, a, p, pal);
 574             u1 += u;
 575             v1 += v;
 576             a1 += a;
 577             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 578             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 579             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 580             cb++;
 581             cr++;
 582             p += -wrap3 + BPP;
 583             lum += -wrap + 1;
 584         }
 585         p += wrap3 + (wrap3 - dstw * BPP);
 586         lum += wrap + (wrap - dstw - dstx);
 587         cb += dst->linesize[1] - width2 - skip2;
 588         cr += dst->linesize[2] - width2 - skip2;
 589     }
 590     /* handle odd height */
 591     if (h) {
 592         lum += dstx;
 593         cb += skip2;
 594         cr += skip2;
 595
 596         if (dstx & 1) {
 597             YUVA_IN(y, u, v, a, p, pal);
 598             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 599             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 600             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 601             cb++;
 602             cr++;
 603             lum++;
 604             p += BPP;
 605         }
 606         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 607             YUVA_IN(y, u, v, a, p, pal);
 608             u1 = u;
 609             v1 = v;
 610             a1 = a;
 611             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 612
 613             YUVA_IN(y, u, v, a, p + BPP, pal);
 614             u1 += u;
 615             v1 += v;
 616             a1 += a;
 617             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 618             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
 619             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
 620             cb++;
 621             cr++;
 622             p += 2 * BPP;
 623             lum += 2;
 624         }
 625         if (w) {
 626             YUVA_IN(y, u, v, a, p, pal);
 627             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 628             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 629             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 630         }
 631     }
 632 }
 633
 634 static void free_subpicture(SubPicture *sp)
 635 {
 636     avsubtitle_free(&sp->sub);
 637 }
 638
 639 static void video_image_display(VideoState *is)
 640 {
 641     VideoPicture *vp;
 642     SubPicture *sp;
 643     AVPicture pict;
 644     float aspect_ratio;
 645     int width, height, x, y;
 646     SDL_Rect rect;
 647     int i;
 648
 649     vp = &is->pictq[is->pictq_rindex];
 650     if (vp->bmp) {
 651 #if CONFIG_AVFILTER
 652          if (!vp->sar.num)
 653              aspect_ratio = 0;
 654          else
 655              aspect_ratio = av_q2d(vp->sar);
 656 #else
 657
 658         /* XXX: use variable in the frame */
 659         if (is->video_st->sample_aspect_ratio.num)
 660             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
 661         else if (is->video_st->codec->sample_aspect_ratio.num)
 662             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
 663         else
 664             aspect_ratio = 0;
 665 #endif
 666         if (aspect_ratio <= 0.0)
 667             aspect_ratio = 1.0;
 668         aspect_ratio *= (float)vp->width / (float)vp->height;
 669
 670         if (is->subtitle_st)
 671         {
 672             if (is->subpq_size > 0)
 673             {
 674                 sp = &is->subpq[is->subpq_rindex];
 675
 676                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
 677                 {
 678                     SDL_LockYUVOverlay (vp->bmp);
 679
 680                     pict.data[0] = vp->bmp->pixels[0];
 681                     pict.data[1] = vp->bmp->pixels[2];
 682                     pict.data[2] = vp->bmp->pixels[1];
 683
 684                     pict.linesize[0] = vp->bmp->pitches[0];
 685                     pict.linesize[1] = vp->bmp->pitches[2];
 686                     pict.linesize[2] = vp->bmp->pitches[1];
 687
 688                     for (i = 0; i < sp->sub.num_rects; i++)
 689                         blend_subrect(&pict, sp->sub.rects[i],
 690                                       vp->bmp->w, vp->bmp->h);
 691
 692                     SDL_UnlockYUVOverlay (vp->bmp);
 693                 }
 694             }
 695         }
 696
 697
 698         /* XXX: we suppose the screen has a 1.0 pixel ratio */
 699         height = is->height;
 700         width = ((int)rint(height * aspect_ratio)) & ~1;
 701         if (width > is->width) {
 702             width = is->width;
 703             height = ((int)rint(width / aspect_ratio)) & ~1;
 704         }
 705         x = (is->width - width) / 2;
 706         y = (is->height - height) / 2;
 707         is->no_background = 0;
 708         rect.x = is->xleft + x;
 709         rect.y = is->ytop  + y;
 710         rect.w = width;
 711         rect.h = height;
 712         SDL_DisplayYUVOverlay(vp->bmp, &rect);
 713     }
 714 }
 715
 716 /* get the current audio output buffer size, in samples. With SDL, we
 717    cannot have a precise information */
 718 static int audio_write_get_buf_size(VideoState *is)
 719 {
 720     return is->audio_buf_size - is->audio_buf_index;
 721 }
 722
 723 static inline int compute_mod(int a, int b)
 724 {
 725     a = a % b;
 726     if (a >= 0)
 727         return a;
 728     else
 729         return a + b;
 730 }
 731
 732 static void video_audio_display(VideoState *s)
 733 {
 734     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 735     int ch, channels, h, h2, bgcolor, fgcolor;
 736     int16_t time_diff;
 737     int rdft_bits, nb_freq;
 738
 739     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
 740         ;
 741     nb_freq = 1 << (rdft_bits - 1);
 742
 743     /* compute display index : center on currently output samples */
 744     channels = s->sdl_channels;
 745     nb_display_channels = channels;
 746     if (!s->paused) {
 747         int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
 748         n = 2 * channels;
 749         delay = audio_write_get_buf_size(s);
 750         delay /= n;
 751
 752         /* to be more precise, we take into account the time spent since
 753            the last buffer computation */
 754         if (audio_callback_time) {
 755             time_diff = av_gettime() - audio_callback_time;
 756             delay -= (time_diff * s->sdl_sample_rate) / 1000000;
 757         }
 758
 759         delay += 2 * data_used;
 760         if (delay < data_used)
 761             delay = data_used;
 762
 763         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 764         if (s->show_audio == 1) {
 765             h = INT_MIN;
 766             for (i = 0; i < 1000; i += channels) {
 767                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
 768                 int a = s->sample_array[idx];
 769                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
 770                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
 771                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
 772                 int score = a - d;
 773                 if (h < score && (b ^ c) < 0) {
 774                     h = score;
 775                     i_start = idx;
 776                 }
 777             }
 778         }
 779
 780         s->last_i_start = i_start;
 781     } else {
 782         i_start = s->last_i_start;
 783     }
 784
 785     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 786     if (s->show_audio == 1) {
 787         fill_rectangle(screen,
 788                        s->xleft, s->ytop, s->width, s->height,
 789                        bgcolor);
 790
 791         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 792
 793         /* total height for one channel */
 794         h = s->height / nb_display_channels;
 795         /* graph height / 2 */
 796         h2 = (h * 9) / 20;
 797         for (ch = 0; ch < nb_display_channels; ch++) {
 798             i = i_start + ch;
 799             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 800             for (x = 0; x < s->width; x++) {
 801                 y = (s->sample_array[i] * h2) >> 15;
 802                 if (y < 0) {
 803                     y = -y;
 804                     ys = y1 - y;
 805                 } else {
 806                     ys = y1;
 807                 }
 808                 fill_rectangle(screen,
 809                                s->xleft + x, ys, 1, y,
 810                                fgcolor);
 811                 i += channels;
 812                 if (i >= SAMPLE_ARRAY_SIZE)
 813                     i -= SAMPLE_ARRAY_SIZE;
 814             }
 815         }
 816
 817         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 818
 819         for (ch = 1; ch < nb_display_channels; ch++) {
 820             y = s->ytop + ch * h;
 821             fill_rectangle(screen,
 822                            s->xleft, y, s->width, 1,
 823                            fgcolor);
 824         }
 825         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 826     } else {
 827         nb_display_channels= FFMIN(nb_display_channels, 2);
 828         if (rdft_bits != s->rdft_bits) {
 829             av_rdft_end(s->rdft);
 830             av_free(s->rdft_data);
 831             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
 832             s->rdft_bits = rdft_bits;
 833             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
 834         }
 835         {
 836             FFTSample *data[2];
 837             for (ch = 0; ch < nb_display_channels; ch++) {
 838                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
 839                 i = i_start + ch;
 840                 for (x = 0; x < 2 * nb_freq; x++) {
 841                     double w = (x-nb_freq) * (1.0 / nb_freq);
 842                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
 843                     i += channels;
 844                     if (i >= SAMPLE_ARRAY_SIZE)
 845                         i -= SAMPLE_ARRAY_SIZE;
 846                 }
 847                 av_rdft_calc(s->rdft, data[ch]);
 848             }
 849             /* Least efficient way to do this, we should of course
 850              * directly access it but it is more than fast enough. */
 851             for (y = 0; y < s->height; y++) {
 852                 double w = 1 / sqrt(nb_freq);
 853                 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]));
 854                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
 855                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
 856                 a = FFMIN(a, 255);
 857                 b = FFMIN(b, 255);
 858                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
 859
 860                 fill_rectangle(screen,
 861                             s->xpos, s->height-y, 1, 1,
 862                             fgcolor);
 863             }
 864         }
 865         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
 866         s->xpos++;
 867         if (s->xpos >= s->width)
 868             s->xpos= s->xleft;
 869     }
 870 }
 871
 872 static int video_open(VideoState *is)
 873 {
 874     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 875     int w,h;
 876
 877     if (is_full_screen) flags |= SDL_FULLSCREEN;
 878     else                flags |= SDL_RESIZABLE;
 879
 880     if (is_full_screen && fs_screen_width) {
 881         w = fs_screen_width;
 882         h = fs_screen_height;
 883     } else if (!is_full_screen && screen_width) {
 884         w = screen_width;
 885         h = screen_height;
 886 #if CONFIG_AVFILTER
 887     } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
 888         w = is->out_video_filter->inputs[0]->w;
 889         h = is->out_video_filter->inputs[0]->h;
 890 #else
 891     } else if (is->video_st && is->video_st->codec->width) {
 892         w = is->video_st->codec->width;
 893         h = is->video_st->codec->height;
 894 #endif
 895     } else {
 896         w = 640;
 897         h = 480;
 898     }
 899     if (screen && is->width == screen->w && screen->w == w
 900        && is->height== screen->h && screen->h == h)
 901         return 0;
 902
 903 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
 904     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
 905     screen = SDL_SetVideoMode(w, h, 24, flags);
 906 #else
 907     screen = SDL_SetVideoMode(w, h, 0, flags);
 908 #endif
 909     if (!screen) {
 910         fprintf(stderr, "SDL: could not set video mode - exiting\n");
 911         return -1;
 912     }
 913     if (!window_title)
 914         window_title = input_filename;
 915     SDL_WM_SetCaption(window_title, window_title);
 916
 917     is->width  = screen->w;
 918     is->height = screen->h;
 919
 920     return 0;
 921 }
 922
 923 /* display the current picture, if any */
 924 static void video_display(VideoState *is)
 925 {
 926     if (!screen)
 927         video_open(cur_stream);
 928     if (is->audio_st && is->show_audio)
 929         video_audio_display(is);
 930     else if (is->video_st)
 931         video_image_display(is);
 932 }
 933
 934 static int refresh_thread(void *opaque)
 935 {
 936     VideoState *is= opaque;
 937     while (!is->abort_request) {
 938         SDL_Event event;
 939         event.type = FF_REFRESH_EVENT;
 940         event.user.data1 = opaque;
 941         if (!is->refresh) {
 942             is->refresh = 1;
 943             SDL_PushEvent(&event);
 944         }
 945         av_usleep(is->audio_st && is->show_audio ? rdftspeed * 1000 : 5000); // FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
 946     }
 947     return 0;
 948 }
 949
 950 /* get the current audio clock value */
 951 static double get_audio_clock(VideoState *is)
 952 {
 953     double pts;
 954     int hw_buf_size, bytes_per_sec;
 955     pts = is->audio_clock;
 956     hw_buf_size = audio_write_get_buf_size(is);
 957     bytes_per_sec = 0;
 958     if (is->audio_st) {
 959         bytes_per_sec = is->sdl_sample_rate * is->sdl_channels *
 960                         av_get_bytes_per_sample(is->sdl_sample_fmt);
 961     }
 962     if (bytes_per_sec)
 963         pts -= (double)hw_buf_size / bytes_per_sec;
 964     return pts;
 965 }
 966
 967 /* get the current video clock value */
 968 static double get_video_clock(VideoState *is)
 969 {
 970     if (is->paused) {
 971         return is->video_current_pts;
 972     } else {
 973         return is->video_current_pts_drift + av_gettime() / 1000000.0;
 974     }
 975 }
 976
 977 /* get the current external clock value */
 978 static double get_external_clock(VideoState *is)
 979 {
 980     int64_t ti;
 981     ti = av_gettime();
 982     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
 983 }
 984
 985 /* get the current master clock value */
 986 static double get_master_clock(VideoState *is)
 987 {
 988     double val;
 989
 990     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
 991         if (is->video_st)
 992             val = get_video_clock(is);
 993         else
 994             val = get_audio_clock(is);
 995     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
 996         if (is->audio_st)
 997             val = get_audio_clock(is);
 998         else
 999             val = get_video_clock(is);
1000     } else {
1001         val = get_external_clock(is);
1002     }
1003     return val;
1004 }
1005
1006 /* seek in the stream */
1007 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1008 {
1009     if (!is->seek_req) {
1010         is->seek_pos = pos;
1011         is->seek_rel = rel;
1012         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1013         if (seek_by_bytes)
1014             is->seek_flags |= AVSEEK_FLAG_BYTE;
1015         is->seek_req = 1;
1016     }
1017 }
1018
1019 /* pause or resume the video */
1020 static void stream_pause(VideoState *is)
1021 {
1022     if (is->paused) {
1023         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1024         if (is->read_pause_return != AVERROR(ENOSYS)) {
1025             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1026         }
1027         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1028     }
1029     is->paused = !is->paused;
1030 }
1031
1032 static double compute_target_time(double frame_current_pts, VideoState *is)
1033 {
1034     double delay, sync_threshold, diff;
1035
1036     /* compute nominal delay */
1037     delay = frame_current_pts - is->frame_last_pts;
1038     if (delay <= 0 || delay >= 10.0) {
1039         /* if incorrect delay, use previous one */
1040         delay = is->frame_last_delay;
1041     } else {
1042         is->frame_last_delay = delay;
1043     }
1044     is->frame_last_pts = frame_current_pts;
1045
1046     /* update delay to follow master synchronisation source */
1047     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1048          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1049         /* if video is slave, we try to correct big delays by
1050            duplicating or deleting a frame */
1051         diff = get_video_clock(is) - get_master_clock(is);
1052
1053         /* skip or repeat frame. We take into account the
1054            delay to compute the threshold. I still don't know
1055            if it is the best guess */
1056         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1057         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1058             if (diff <= -sync_threshold)
1059                 delay = 0;
1060             else if (diff >= sync_threshold)
1061                 delay = 2 * delay;
1062         }
1063     }
1064     is->frame_timer += delay;
1065
1066     av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1067             delay, frame_current_pts, -diff);
1068
1069     return is->frame_timer;
1070 }
1071
1072 /* called to display each frame */
1073 static void video_refresh_timer(void *opaque)
1074 {
1075     VideoState *is = opaque;
1076     VideoPicture *vp;
1077
1078     SubPicture *sp, *sp2;
1079
1080     if (is->video_st) {
1081 retry:
1082         if (is->pictq_size == 0) {
1083             // nothing to do, no picture to display in the que
1084         } else {
1085             double time = av_gettime() / 1000000.0;
1086             double next_target;
1087             /* dequeue the picture */
1088             vp = &is->pictq[is->pictq_rindex];
1089
1090             if (time < vp->target_clock)
1091                 return;
1092             /* update current video pts */
1093             is->video_current_pts = vp->pts;
1094             is->video_current_pts_drift = is->video_current_pts - time;
1095             is->video_current_pos = vp->pos;
1096             if (is->pictq_size > 1) {
1097                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1098                 assert(nextvp->target_clock >= vp->target_clock);
1099                 next_target= nextvp->target_clock;
1100             } else {
1101                 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1102             }
1103             if (framedrop && time > next_target) {
1104                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1105                 if (is->pictq_size > 1 || time > next_target + 0.5) {
1106                     /* update queue size and signal for next picture */
1107                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1108                         is->pictq_rindex = 0;
1109
1110                     SDL_LockMutex(is->pictq_mutex);
1111                     is->pictq_size--;
1112                     SDL_CondSignal(is->pictq_cond);
1113                     SDL_UnlockMutex(is->pictq_mutex);
1114                     goto retry;
1115                 }
1116             }
1117
1118             if (is->subtitle_st) {
1119                 if (is->subtitle_stream_changed) {
1120                     SDL_LockMutex(is->subpq_mutex);
1121
1122                     while (is->subpq_size) {
1123                         free_subpicture(&is->subpq[is->subpq_rindex]);
1124
1125                         /* update queue size and signal for next picture */
1126                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1127                             is->subpq_rindex = 0;
1128
1129                         is->subpq_size--;
1130                     }
1131                     is->subtitle_stream_changed = 0;
1132
1133                     SDL_CondSignal(is->subpq_cond);
1134                     SDL_UnlockMutex(is->subpq_mutex);
1135                 } else {
1136                     if (is->subpq_size > 0) {
1137                         sp = &is->subpq[is->subpq_rindex];
1138
1139                         if (is->subpq_size > 1)
1140                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1141                         else
1142                             sp2 = NULL;
1143
1144                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1145                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1146                         {
1147                             free_subpicture(sp);
1148
1149                             /* update queue size and signal for next picture */
1150                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1151                                 is->subpq_rindex = 0;
1152
1153                             SDL_LockMutex(is->subpq_mutex);
1154                             is->subpq_size--;
1155                             SDL_CondSignal(is->subpq_cond);
1156                             SDL_UnlockMutex(is->subpq_mutex);
1157                         }
1158                     }
1159                 }
1160             }
1161
1162             /* display picture */
1163             if (!display_disable)
1164                 video_display(is);
1165
1166             /* update queue size and signal for next picture */
1167             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1168                 is->pictq_rindex = 0;
1169
1170             SDL_LockMutex(is->pictq_mutex);
1171             is->pictq_size--;
1172             SDL_CondSignal(is->pictq_cond);
1173             SDL_UnlockMutex(is->pictq_mutex);
1174         }
1175     } else if (is->audio_st) {
1176         /* draw the next audio frame */
1177
1178         /* if only audio stream, then display the audio bars (better
1179            than nothing, just to test the implementation */
1180
1181         /* display picture */
1182         if (!display_disable)
1183             video_display(is);
1184     }
1185     if (show_status) {
1186         static int64_t last_time;
1187         int64_t cur_time;
1188         int aqsize, vqsize, sqsize;
1189         double av_diff;
1190
1191         cur_time = av_gettime();
1192         if (!last_time || (cur_time - last_time) >= 30000) {
1193             aqsize = 0;
1194             vqsize = 0;
1195             sqsize = 0;
1196             if (is->audio_st)
1197                 aqsize = is->audioq.size;
1198             if (is->video_st)
1199                 vqsize = is->videoq.size;
1200             if (is->subtitle_st)
1201                 sqsize = is->subtitleq.size;
1202             av_diff = 0;
1203             if (is->audio_st && is->video_st)
1204                 av_diff = get_audio_clock(is) - get_video_clock(is);
1205             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1206                    get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1207                    vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1208             fflush(stdout);
1209             last_time = cur_time;
1210         }
1211     }
1212 }
1213
1214 static void stream_close(VideoState *is)
1215 {
1216     VideoPicture *vp;
1217     int i;
1218     /* XXX: use a special url_shutdown call to abort parse cleanly */
1219     is->abort_request = 1;
1220     SDL_WaitThread(is->parse_tid, NULL);
1221     SDL_WaitThread(is->refresh_tid, NULL);
1222
1223     /* free all pictures */
1224     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1225         vp = &is->pictq[i];
1226         if (vp->bmp) {
1227             SDL_FreeYUVOverlay(vp->bmp);
1228             vp->bmp = NULL;
1229         }
1230     }
1231     SDL_DestroyMutex(is->pictq_mutex);
1232     SDL_DestroyCond(is->pictq_cond);
1233     SDL_DestroyMutex(is->subpq_mutex);
1234     SDL_DestroyCond(is->subpq_cond);
1235 #if !CONFIG_AVFILTER
1236     if (is->img_convert_ctx)
1237         sws_freeContext(is->img_convert_ctx);
1238 #endif
1239     av_free(is);
1240 }
1241
1242 static void do_exit(void)
1243 {
1244     if (cur_stream) {
1245         stream_close(cur_stream);
1246         cur_stream = NULL;
1247     }
1248     uninit_opts();
1249     avformat_network_deinit();
1250     if (show_status)
1251         printf("\n");
1252     SDL_Quit();
1253     av_log(NULL, AV_LOG_QUIET, "");
1254     exit(0);
1255 }
1256
1257 /* allocate a picture (needs to do that in main thread to avoid
1258    potential locking problems */
1259 static void alloc_picture(void *opaque)
1260 {
1261     VideoState *is = opaque;
1262     VideoPicture *vp;
1263
1264     vp = &is->pictq[is->pictq_windex];
1265
1266     if (vp->bmp)
1267         SDL_FreeYUVOverlay(vp->bmp);
1268
1269 #if CONFIG_AVFILTER
1270     vp->width   = is->out_video_filter->inputs[0]->w;
1271     vp->height  = is->out_video_filter->inputs[0]->h;
1272     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1273 #else
1274     vp->width   = is->video_st->codec->width;
1275     vp->height  = is->video_st->codec->height;
1276     vp->pix_fmt = is->video_st->codec->pix_fmt;
1277 #endif
1278
1279     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1280                                    SDL_YV12_OVERLAY,
1281                                    screen);
1282     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1283         /* SDL allocates a buffer smaller than requested if the video
1284          * overlay hardware is unable to support the requested size. */
1285         fprintf(stderr, "Error: the video system does not support an image\n"
1286                         "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1287                         "to reduce the image size.\n", vp->width, vp->height );
1288         do_exit();
1289     }
1290
1291     SDL_LockMutex(is->pictq_mutex);
1292     vp->allocated = 1;
1293     SDL_CondSignal(is->pictq_cond);
1294     SDL_UnlockMutex(is->pictq_mutex);
1295 }
1296
1297 /* The 'pts' parameter is the dts of the packet / pts of the frame and
1298  * guessed if not known. */
1299 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1300 {
1301     VideoPicture *vp;
1302 #if CONFIG_AVFILTER
1303     AVPicture pict_src;
1304 #else
1305     int dst_pix_fmt = AV_PIX_FMT_YUV420P;
1306 #endif
1307     /* wait until we have space to put a new picture */
1308     SDL_LockMutex(is->pictq_mutex);
1309
1310     if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1311         is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1312
1313     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1314            !is->videoq.abort_request) {
1315         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1316     }
1317     SDL_UnlockMutex(is->pictq_mutex);
1318
1319     if (is->videoq.abort_request)
1320         return -1;
1321
1322     vp = &is->pictq[is->pictq_windex];
1323
1324     /* alloc or resize hardware picture buffer */
1325     if (!vp->bmp || vp->reallocate ||
1326 #if CONFIG_AVFILTER
1327         vp->width  != is->out_video_filter->inputs[0]->w ||
1328         vp->height != is->out_video_filter->inputs[0]->h) {
1329 #else
1330         vp->width != is->video_st->codec->width ||
1331         vp->height != is->video_st->codec->height) {
1332 #endif
1333         SDL_Event event;
1334
1335         vp->allocated  = 0;
1336         vp->reallocate = 0;
1337
1338         /* the allocation must be done in the main thread to avoid
1339            locking problems */
1340         event.type = FF_ALLOC_EVENT;
1341         event.user.data1 = is;
1342         SDL_PushEvent(&event);
1343
1344         /* wait until the picture is allocated */
1345         SDL_LockMutex(is->pictq_mutex);
1346         while (!vp->allocated && !is->videoq.abort_request) {
1347             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1348         }
1349         SDL_UnlockMutex(is->pictq_mutex);
1350
1351         if (is->videoq.abort_request)
1352             return -1;
1353     }
1354
1355     /* if the frame is not skipped, then display it */
1356     if (vp->bmp) {
1357         AVPicture pict = { { 0 } };
1358
1359         /* get a pointer on the bitmap */
1360         SDL_LockYUVOverlay (vp->bmp);
1361
1362         pict.data[0] = vp->bmp->pixels[0];
1363         pict.data[1] = vp->bmp->pixels[2];
1364         pict.data[2] = vp->bmp->pixels[1];
1365
1366         pict.linesize[0] = vp->bmp->pitches[0];
1367         pict.linesize[1] = vp->bmp->pitches[2];
1368         pict.linesize[2] = vp->bmp->pitches[1];
1369
1370 #if CONFIG_AVFILTER
1371         pict_src.data[0] = src_frame->data[0];
1372         pict_src.data[1] = src_frame->data[1];
1373         pict_src.data[2] = src_frame->data[2];
1374
1375         pict_src.linesize[0] = src_frame->linesize[0];
1376         pict_src.linesize[1] = src_frame->linesize[1];
1377         pict_src.linesize[2] = src_frame->linesize[2];
1378
1379         // FIXME use direct rendering
1380         av_picture_copy(&pict, &pict_src,
1381                         vp->pix_fmt, vp->width, vp->height);
1382 #else
1383         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1384         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1385             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1386             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1387         if (is->img_convert_ctx == NULL) {
1388             fprintf(stderr, "Cannot initialize the conversion context\n");
1389             exit(1);
1390         }
1391         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1392                   0, vp->height, pict.data, pict.linesize);
1393 #endif
1394         /* update the bitmap content */
1395         SDL_UnlockYUVOverlay(vp->bmp);
1396
1397         vp->pts = pts;
1398         vp->pos = pos;
1399
1400         /* now we can update the picture count */
1401         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1402             is->pictq_windex = 0;
1403         SDL_LockMutex(is->pictq_mutex);
1404         vp->target_clock = compute_target_time(vp->pts, is);
1405
1406         is->pictq_size++;
1407         SDL_UnlockMutex(is->pictq_mutex);
1408     }
1409     return 0;
1410 }
1411
1412 /* Compute the exact PTS for the picture if it is omitted in the stream.
1413  * The 'pts1' parameter is the dts of the packet / pts of the frame. */
1414 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1415 {
1416     double frame_delay, pts;
1417     int ret;
1418
1419     pts = pts1;
1420
1421     if (pts != 0) {
1422         /* update video clock with pts, if present */
1423         is->video_clock = pts;
1424     } else {
1425         pts = is->video_clock;
1426     }
1427     /* update video clock for next frame */
1428     frame_delay = av_q2d(is->video_st->codec->time_base);
1429     /* for MPEG2, the frame can be repeated, so we update the
1430        clock accordingly */
1431     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1432     is->video_clock += frame_delay;
1433
1434     ret = queue_picture(is, src_frame, pts, pos);
1435     av_frame_unref(src_frame);
1436     return ret;
1437 }
1438
1439 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1440 {
1441     int got_picture, i;
1442
1443     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1444         return -1;
1445
1446     if (pkt->data == flush_pkt.data) {
1447         avcodec_flush_buffers(is->video_st->codec);
1448
1449         SDL_LockMutex(is->pictq_mutex);
1450         // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1451         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1452             is->pictq[i].target_clock= 0;
1453         }
1454         while (is->pictq_size && !is->videoq.abort_request) {
1455             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1456         }
1457         is->video_current_pos = -1;
1458         SDL_UnlockMutex(is->pictq_mutex);
1459
1460         init_pts_correction(&is->pts_ctx);
1461         is->frame_last_pts = AV_NOPTS_VALUE;
1462         is->frame_last_delay = 0;
1463         is->frame_timer = (double)av_gettime() / 1000000.0;
1464         is->skip_frames = 1;
1465         is->skip_frames_index = 0;
1466         return 0;
1467     }
1468
1469     avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1470
1471     if (got_picture) {
1472         if (decoder_reorder_pts == -1) {
1473             *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1474         } else if (decoder_reorder_pts) {
1475             *pts = frame->pkt_pts;
1476         } else {
1477             *pts = frame->pkt_dts;
1478         }
1479
1480         if (*pts == AV_NOPTS_VALUE) {
1481             *pts = 0;
1482         }
1483         if (is->video_st->sample_aspect_ratio.num) {
1484             frame->sample_aspect_ratio = is->video_st->sample_aspect_ratio;
1485         }
1486
1487         is->skip_frames_index += 1;
1488         if (is->skip_frames_index >= is->skip_frames) {
1489             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1490             return 1;
1491         }
1492         av_frame_unref(frame);
1493     }
1494     return 0;
1495 }
1496
1497 #if CONFIG_AVFILTER
1498 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1499 {
1500     char sws_flags_str[128];
1501     char buffersrc_args[256];
1502     int ret;
1503     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1504     AVCodecContext *codec = is->video_st->codec;
1505
1506     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1507     graph->scale_sws_opts = av_strdup(sws_flags_str);
1508
1509     snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1510              codec->width, codec->height, codec->pix_fmt,
1511              is->video_st->time_base.num, is->video_st->time_base.den,
1512              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1513
1514
1515     if ((ret = avfilter_graph_create_filter(&filt_src,
1516                                             avfilter_get_by_name("buffer"),
1517                                             "src", buffersrc_args, NULL,
1518                                             graph)) < 0)
1519         return ret;
1520     if ((ret = avfilter_graph_create_filter(&filt_out,
1521                                             avfilter_get_by_name("buffersink"),
1522                                             "out", NULL, NULL, graph)) < 0)
1523         return ret;
1524
1525     if ((ret = avfilter_graph_create_filter(&filt_format,
1526                                             avfilter_get_by_name("format"),
1527                                             "format", "yuv420p", NULL, graph)) < 0)
1528         return ret;
1529     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1530         return ret;
1531
1532
1533     if (vfilters) {
1534         AVFilterInOut *outputs = avfilter_inout_alloc();
1535         AVFilterInOut *inputs  = avfilter_inout_alloc();
1536
1537         outputs->name    = av_strdup("in");
1538         outputs->filter_ctx = filt_src;
1539         outputs->pad_idx = 0;
1540         outputs->next    = NULL;
1541
1542         inputs->name    = av_strdup("out");
1543         inputs->filter_ctx = filt_format;
1544         inputs->pad_idx = 0;
1545         inputs->next    = NULL;
1546
1547         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1548             return ret;
1549     } else {
1550         if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1551             return ret;
1552     }
1553
1554     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1555         return ret;
1556
1557     is->in_video_filter  = filt_src;
1558     is->out_video_filter = filt_out;
1559
1560     return ret;
1561 }
1562
1563 #endif  /* CONFIG_AVFILTER */
1564
1565 static int video_thread(void *arg)
1566 {
1567     AVPacket pkt = { 0 };
1568     VideoState *is = arg;
1569     AVFrame *frame = av_frame_alloc();
1570     int64_t pts_int;
1571     double pts;
1572     int ret;
1573
1574 #if CONFIG_AVFILTER
1575     AVFilterGraph *graph = avfilter_graph_alloc();
1576     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1577     int last_w = is->video_st->codec->width;
1578     int last_h = is->video_st->codec->height;
1579
1580     if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1581         goto the_end;
1582     filt_in  = is->in_video_filter;
1583     filt_out = is->out_video_filter;
1584 #endif
1585
1586     for (;;) {
1587 #if CONFIG_AVFILTER
1588         AVRational tb;
1589 #endif
1590         while (is->paused && !is->videoq.abort_request)
1591             SDL_Delay(10);
1592
1593         av_free_packet(&pkt);
1594
1595         ret = get_video_frame(is, frame, &pts_int, &pkt);
1596         if (ret < 0)
1597             goto the_end;
1598
1599         if (!ret)
1600             continue;
1601
1602 #if CONFIG_AVFILTER
1603         if (   last_w != is->video_st->codec->width
1604             || last_h != is->video_st->codec->height) {
1605             av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1606                     is->video_st->codec->width, is->video_st->codec->height);
1607             avfilter_graph_free(&graph);
1608             graph = avfilter_graph_alloc();
1609             if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1610                 goto the_end;
1611             filt_in  = is->in_video_filter;
1612             filt_out = is->out_video_filter;
1613             last_w = is->video_st->codec->width;
1614             last_h = is->video_st->codec->height;
1615         }
1616
1617         frame->pts = pts_int;
1618         ret = av_buffersrc_add_frame(filt_in, frame);
1619         if (ret < 0)
1620             goto the_end;
1621
1622         while (ret >= 0) {
1623             ret = av_buffersink_get_frame(filt_out, frame);
1624             if (ret < 0) {
1625                 ret = 0;
1626                 break;
1627             }
1628
1629             pts_int = frame->pts;
1630             tb      = filt_out->inputs[0]->time_base;
1631             if (av_cmp_q(tb, is->video_st->time_base)) {
1632                 av_unused int64_t pts1 = pts_int;
1633                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1634                 av_dlog(NULL, "video_thread(): "
1635                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1636                         tb.num, tb.den, pts1,
1637                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1638             }
1639             pts = pts_int * av_q2d(is->video_st->time_base);
1640             ret = output_picture2(is, frame, pts, 0);
1641         }
1642 #else
1643         pts = pts_int * av_q2d(is->video_st->time_base);
1644         ret = output_picture2(is, frame, pts,  pkt.pos);
1645 #endif
1646
1647         if (ret < 0)
1648             goto the_end;
1649
1650
1651         if (step)
1652             if (cur_stream)
1653                 stream_pause(cur_stream);
1654     }
1655  the_end:
1656 #if CONFIG_AVFILTER
1657     av_freep(&vfilters);
1658     avfilter_graph_free(&graph);
1659 #endif
1660     av_free_packet(&pkt);
1661     av_frame_free(&frame);
1662     return 0;
1663 }
1664
1665 static int subtitle_thread(void *arg)
1666 {
1667     VideoState *is = arg;
1668     SubPicture *sp;
1669     AVPacket pkt1, *pkt = &pkt1;
1670     int got_subtitle;
1671     double pts;
1672     int i, j;
1673     int r, g, b, y, u, v, a;
1674
1675     for (;;) {
1676         while (is->paused && !is->subtitleq.abort_request) {
1677             SDL_Delay(10);
1678         }
1679         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1680             break;
1681
1682         if (pkt->data == flush_pkt.data) {
1683             avcodec_flush_buffers(is->subtitle_st->codec);
1684             continue;
1685         }
1686         SDL_LockMutex(is->subpq_mutex);
1687         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1688                !is->subtitleq.abort_request) {
1689             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1690         }
1691         SDL_UnlockMutex(is->subpq_mutex);
1692
1693         if (is->subtitleq.abort_request)
1694             return 0;
1695
1696         sp = &is->subpq[is->subpq_windex];
1697
1698        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1699            this packet, if any */
1700         pts = 0;
1701         if (pkt->pts != AV_NOPTS_VALUE)
1702             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1703
1704         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1705                                  &got_subtitle, pkt);
1706
1707         if (got_subtitle && sp->sub.format == 0) {
1708             sp->pts = pts;
1709
1710             for (i = 0; i < sp->sub.num_rects; i++)
1711             {
1712                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1713                 {
1714                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1715                     y = RGB_TO_Y_CCIR(r, g, b);
1716                     u = RGB_TO_U_CCIR(r, g, b, 0);
1717                     v = RGB_TO_V_CCIR(r, g, b, 0);
1718                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1719                 }
1720             }
1721
1722             /* now we can update the picture count */
1723             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1724                 is->subpq_windex = 0;
1725             SDL_LockMutex(is->subpq_mutex);
1726             is->subpq_size++;
1727             SDL_UnlockMutex(is->subpq_mutex);
1728         }
1729         av_free_packet(pkt);
1730     }
1731     return 0;
1732 }
1733
1734 /* copy samples for viewing in editor window */
1735 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1736 {
1737     int size, len;
1738
1739     size = samples_size / sizeof(short);
1740     while (size > 0) {
1741         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1742         if (len > size)
1743             len = size;
1744         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1745         samples += len;
1746         is->sample_array_index += len;
1747         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1748             is->sample_array_index = 0;
1749         size -= len;
1750     }
1751 }
1752
1753 /* return the new audio buffer size (samples can be added or deleted
1754    to get better sync if video or external master clock) */
1755 static int synchronize_audio(VideoState *is, short *samples,
1756                              int samples_size1, double pts)
1757 {
1758     int n, samples_size;
1759     double ref_clock;
1760
1761     n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1762     samples_size = samples_size1;
1763
1764     /* if not master, then we try to remove or add samples to correct the clock */
1765     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1766          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1767         double diff, avg_diff;
1768         int wanted_size, min_size, max_size, nb_samples;
1769
1770         ref_clock = get_master_clock(is);
1771         diff = get_audio_clock(is) - ref_clock;
1772
1773         if (diff < AV_NOSYNC_THRESHOLD) {
1774             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1775             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1776                 /* not enough measures to have a correct estimate */
1777                 is->audio_diff_avg_count++;
1778             } else {
1779                 /* estimate the A-V difference */
1780                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1781
1782                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1783                     wanted_size = samples_size + ((int)(diff * is->sdl_sample_rate) * n);
1784                     nb_samples = samples_size / n;
1785
1786                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1787                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1788                     if (wanted_size < min_size)
1789                         wanted_size = min_size;
1790                     else if (wanted_size > max_size)
1791                         wanted_size = max_size;
1792
1793                     /* add or remove samples to correction the synchro */
1794                     if (wanted_size < samples_size) {
1795                         /* remove samples */
1796                         samples_size = wanted_size;
1797                     } else if (wanted_size > samples_size) {
1798                         uint8_t *samples_end, *q;
1799                         int nb;
1800
1801                         /* add samples */
1802                         nb = (samples_size - wanted_size);
1803                         samples_end = (uint8_t *)samples + samples_size - n;
1804                         q = samples_end + n;
1805                         while (nb > 0) {
1806                             memcpy(q, samples_end, n);
1807                             q += n;
1808                             nb -= n;
1809                         }
1810                         samples_size = wanted_size;
1811                     }
1812                 }
1813                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1814                         diff, avg_diff, samples_size - samples_size1,
1815                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1816             }
1817         } else {
1818             /* too big difference : may be initial PTS errors, so
1819                reset A-V filter */
1820             is->audio_diff_avg_count = 0;
1821             is->audio_diff_cum       = 0;
1822         }
1823     }
1824
1825     return samples_size;
1826 }
1827
1828 /* decode one audio frame and returns its uncompressed size */
1829 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1830 {
1831     AVPacket *pkt_temp = &is->audio_pkt_temp;
1832     AVPacket *pkt = &is->audio_pkt;
1833     AVCodecContext *dec = is->audio_st->codec;
1834     int n, len1, data_size, got_frame;
1835     double pts;
1836     int new_packet = 0;
1837     int flush_complete = 0;
1838
1839     for (;;) {
1840         /* NOTE: the audio packet can contain several frames */
1841         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1842             int resample_changed, audio_resample;
1843
1844             if (!is->frame) {
1845                 if (!(is->frame = avcodec_alloc_frame()))
1846                     return AVERROR(ENOMEM);
1847             } else
1848                 avcodec_get_frame_defaults(is->frame);
1849
1850             if (flush_complete)
1851                 break;
1852             new_packet = 0;
1853             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1854             if (len1 < 0) {
1855                 /* if error, we skip the frame */
1856                 pkt_temp->size = 0;
1857                 break;
1858             }
1859
1860             pkt_temp->data += len1;
1861             pkt_temp->size -= len1;
1862
1863             if (!got_frame) {
1864                 /* stop sending empty packets if the decoder is finished */
1865                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1866                     flush_complete = 1;
1867                 continue;
1868             }
1869             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1870                                                    is->frame->nb_samples,
1871                                                    is->frame->format, 1);
1872
1873             audio_resample = is->frame->format         != is->sdl_sample_fmt     ||
1874                              is->frame->channel_layout != is->sdl_channel_layout ||
1875                              is->frame->sample_rate    != is->sdl_sample_rate;
1876
1877             resample_changed = is->frame->format         != is->resample_sample_fmt     ||
1878                                is->frame->channel_layout != is->resample_channel_layout ||
1879                                is->frame->sample_rate    != is->resample_sample_rate;
1880
1881             if ((!is->avr && audio_resample) || resample_changed) {
1882                 int ret;
1883                 if (is->avr)
1884                     avresample_close(is->avr);
1885                 else if (audio_resample) {
1886                     is->avr = avresample_alloc_context();
1887                     if (!is->avr) {
1888                         fprintf(stderr, "error allocating AVAudioResampleContext\n");
1889                         break;
1890                     }
1891                 }
1892                 if (audio_resample) {
1893                     av_opt_set_int(is->avr, "in_channel_layout",  is->frame->channel_layout, 0);
1894                     av_opt_set_int(is->avr, "in_sample_fmt",      is->frame->format,         0);
1895                     av_opt_set_int(is->avr, "in_sample_rate",     is->frame->sample_rate,    0);
1896                     av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout,    0);
1897                     av_opt_set_int(is->avr, "out_sample_fmt",     is->sdl_sample_fmt,        0);
1898                     av_opt_set_int(is->avr, "out_sample_rate",    is->sdl_sample_rate,       0);
1899
1900                     if ((ret = avresample_open(is->avr)) < 0) {
1901                         fprintf(stderr, "error initializing libavresample\n");
1902                         break;
1903                     }
1904                 }
1905                 is->resample_sample_fmt     = is->frame->format;
1906                 is->resample_channel_layout = is->frame->channel_layout;
1907                 is->resample_sample_rate    = is->frame->sample_rate;
1908             }
1909
1910             if (audio_resample) {
1911                 void *tmp_out;
1912                 int out_samples, out_size, out_linesize;
1913                 int osize      = av_get_bytes_per_sample(is->sdl_sample_fmt);
1914                 int nb_samples = is->frame->nb_samples;
1915
1916                 out_size = av_samples_get_buffer_size(&out_linesize,
1917                                                       is->sdl_channels,
1918                                                       nb_samples,
1919                                                       is->sdl_sample_fmt, 0);
1920                 tmp_out = av_realloc(is->audio_buf1, out_size);
1921                 if (!tmp_out)
1922                     return AVERROR(ENOMEM);
1923                 is->audio_buf1 = tmp_out;
1924
1925                 out_samples = avresample_convert(is->avr,
1926                                                  &is->audio_buf1,
1927                                                  out_linesize, nb_samples,
1928                                                  is->frame->data,
1929                                                  is->frame->linesize[0],
1930                                                  is->frame->nb_samples);
1931                 if (out_samples < 0) {
1932                     fprintf(stderr, "avresample_convert() failed\n");
1933                     break;
1934                 }
1935                 is->audio_buf = is->audio_buf1;
1936                 data_size = out_samples * osize * is->sdl_channels;
1937             } else {
1938                 is->audio_buf = is->frame->data[0];
1939             }
1940
1941             /* if no pts, then compute it */
1942             pts = is->audio_clock;
1943             *pts_ptr = pts;
1944             n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1945             is->audio_clock += (double)data_size /
1946                 (double)(n * is->sdl_sample_rate);
1947 #ifdef DEBUG
1948             {
1949                 static double last_clock;
1950                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1951                        is->audio_clock - last_clock,
1952                        is->audio_clock, pts);
1953                 last_clock = is->audio_clock;
1954             }
1955 #endif
1956             return data_size;
1957         }
1958
1959         /* free the current packet */
1960         if (pkt->data)
1961             av_free_packet(pkt);
1962         memset(pkt_temp, 0, sizeof(*pkt_temp));
1963
1964         if (is->paused || is->audioq.abort_request) {
1965             return -1;
1966         }
1967
1968         /* read next packet */
1969         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
1970             return -1;
1971
1972         if (pkt->data == flush_pkt.data) {
1973             avcodec_flush_buffers(dec);
1974             flush_complete = 0;
1975         }
1976
1977         *pkt_temp = *pkt;
1978
1979         /* if update the audio clock with the pts */
1980         if (pkt->pts != AV_NOPTS_VALUE) {
1981             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1982         }
1983     }
1984 }
1985
1986 /* prepare a new audio buffer */
1987 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1988 {
1989     VideoState *is = opaque;
1990     int audio_size, len1;
1991     double pts;
1992
1993     audio_callback_time = av_gettime();
1994
1995     while (len > 0) {
1996         if (is->audio_buf_index >= is->audio_buf_size) {
1997            audio_size = audio_decode_frame(is, &pts);
1998            if (audio_size < 0) {
1999                 /* if error, just output silence */
2000                is->audio_buf      = is->silence_buf;
2001                is->audio_buf_size = sizeof(is->silence_buf);
2002            } else {
2003                if (is->show_audio)
2004                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2005                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2006                                               pts);
2007                is->audio_buf_size = audio_size;
2008            }
2009            is->audio_buf_index = 0;
2010         }
2011         len1 = is->audio_buf_size - is->audio_buf_index;
2012         if (len1 > len)
2013             len1 = len;
2014         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2015         len -= len1;
2016         stream += len1;
2017         is->audio_buf_index += len1;
2018     }
2019 }
2020
2021 /* open a given stream. Return 0 if OK */
2022 static int stream_component_open(VideoState *is, int stream_index)
2023 {
2024     AVFormatContext *ic = is->ic;
2025     AVCodecContext *avctx;
2026     AVCodec *codec;
2027     SDL_AudioSpec wanted_spec, spec;
2028     AVDictionary *opts;
2029     AVDictionaryEntry *t = NULL;
2030
2031     if (stream_index < 0 || stream_index >= ic->nb_streams)
2032         return -1;
2033     avctx = ic->streams[stream_index]->codec;
2034
2035     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2036
2037     codec = avcodec_find_decoder(avctx->codec_id);
2038     avctx->workaround_bugs   = workaround_bugs;
2039     avctx->idct_algo         = idct;
2040     avctx->skip_frame        = skip_frame;
2041     avctx->skip_idct         = skip_idct;
2042     avctx->skip_loop_filter  = skip_loop_filter;
2043     avctx->error_concealment = error_concealment;
2044
2045     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2046
2047     if (!av_dict_get(opts, "threads", NULL, 0))
2048         av_dict_set(&opts, "threads", "auto", 0);
2049     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
2050         av_dict_set(&opts, "refcounted_frames", "1", 0);
2051     if (!codec ||
2052         avcodec_open2(avctx, codec, &opts) < 0)
2053         return -1;
2054     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2055         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2056         return AVERROR_OPTION_NOT_FOUND;
2057     }
2058
2059     /* prepare audio output */
2060     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2061         is->sdl_sample_rate = avctx->sample_rate;
2062
2063         if (!avctx->channel_layout)
2064             avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2065         if (!avctx->channel_layout) {
2066             fprintf(stderr, "unable to guess channel layout\n");
2067             return -1;
2068         }
2069         if (avctx->channels == 1)
2070             is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2071         else
2072             is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2073         is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2074
2075         wanted_spec.format = AUDIO_S16SYS;
2076         wanted_spec.freq = is->sdl_sample_rate;
2077         wanted_spec.channels = is->sdl_channels;
2078         wanted_spec.silence = 0;
2079         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2080         wanted_spec.callback = sdl_audio_callback;
2081         wanted_spec.userdata = is;
2082         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2083             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2084             return -1;
2085         }
2086         is->audio_hw_buf_size = spec.size;
2087         is->sdl_sample_fmt          = AV_SAMPLE_FMT_S16;
2088         is->resample_sample_fmt     = is->sdl_sample_fmt;
2089         is->resample_channel_layout = avctx->channel_layout;
2090         is->resample_sample_rate    = avctx->sample_rate;
2091     }
2092
2093     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2094     switch (avctx->codec_type) {
2095     case AVMEDIA_TYPE_AUDIO:
2096         is->audio_stream = stream_index;
2097         is->audio_st = ic->streams[stream_index];
2098         is->audio_buf_size  = 0;
2099         is->audio_buf_index = 0;
2100
2101         /* init averaging filter */
2102         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2103         is->audio_diff_avg_count = 0;
2104         /* since we do not have a precise anough audio fifo fullness,
2105            we correct audio sync only if larger than this threshold */
2106         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2107
2108         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2109         packet_queue_init(&is->audioq);
2110         SDL_PauseAudio(0);
2111         break;
2112     case AVMEDIA_TYPE_VIDEO:
2113         is->video_stream = stream_index;
2114         is->video_st = ic->streams[stream_index];
2115
2116         packet_queue_init(&is->videoq);
2117         is->video_tid = SDL_CreateThread(video_thread, is);
2118         break;
2119     case AVMEDIA_TYPE_SUBTITLE:
2120         is->subtitle_stream = stream_index;
2121         is->subtitle_st = ic->streams[stream_index];
2122         packet_queue_init(&is->subtitleq);
2123
2124         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2125         break;
2126     default:
2127         break;
2128     }
2129     return 0;
2130 }
2131
2132 static void stream_component_close(VideoState *is, int stream_index)
2133 {
2134     AVFormatContext *ic = is->ic;
2135     AVCodecContext *avctx;
2136
2137     if (stream_index < 0 || stream_index >= ic->nb_streams)
2138         return;
2139     avctx = ic->streams[stream_index]->codec;
2140
2141     switch (avctx->codec_type) {
2142     case AVMEDIA_TYPE_AUDIO:
2143         packet_queue_abort(&is->audioq);
2144
2145         SDL_CloseAudio();
2146
2147         packet_queue_end(&is->audioq);
2148         av_free_packet(&is->audio_pkt);
2149         if (is->avr)
2150             avresample_free(&is->avr);
2151         av_freep(&is->audio_buf1);
2152         is->audio_buf = NULL;
2153         avcodec_free_frame(&is->frame);
2154
2155         if (is->rdft) {
2156             av_rdft_end(is->rdft);
2157             av_freep(&is->rdft_data);
2158             is->rdft = NULL;
2159             is->rdft_bits = 0;
2160         }
2161         break;
2162     case AVMEDIA_TYPE_VIDEO:
2163         packet_queue_abort(&is->videoq);
2164
2165         /* note: we also signal this mutex to make sure we deblock the
2166            video thread in all cases */
2167         SDL_LockMutex(is->pictq_mutex);
2168         SDL_CondSignal(is->pictq_cond);
2169         SDL_UnlockMutex(is->pictq_mutex);
2170
2171         SDL_WaitThread(is->video_tid, NULL);
2172
2173         packet_queue_end(&is->videoq);
2174         break;
2175     case AVMEDIA_TYPE_SUBTITLE:
2176         packet_queue_abort(&is->subtitleq);
2177
2178         /* note: we also signal this mutex to make sure we deblock the
2179            video thread in all cases */
2180         SDL_LockMutex(is->subpq_mutex);
2181         is->subtitle_stream_changed = 1;
2182
2183         SDL_CondSignal(is->subpq_cond);
2184         SDL_UnlockMutex(is->subpq_mutex);
2185
2186         SDL_WaitThread(is->subtitle_tid, NULL);
2187
2188         packet_queue_end(&is->subtitleq);
2189         break;
2190     default:
2191         break;
2192     }
2193
2194     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2195     avcodec_close(avctx);
2196     switch (avctx->codec_type) {
2197     case AVMEDIA_TYPE_AUDIO:
2198         is->audio_st = NULL;
2199         is->audio_stream = -1;
2200         break;
2201     case AVMEDIA_TYPE_VIDEO:
2202         is->video_st = NULL;
2203         is->video_stream = -1;
2204         break;
2205     case AVMEDIA_TYPE_SUBTITLE:
2206         is->subtitle_st = NULL;
2207         is->subtitle_stream = -1;
2208         break;
2209     default:
2210         break;
2211     }
2212 }
2213
2214 /* since we have only one decoding thread, we can use a global
2215    variable instead of a thread local variable */
2216 static VideoState *global_video_state;
2217
2218 static int decode_interrupt_cb(void *ctx)
2219 {
2220     return global_video_state && global_video_state->abort_request;
2221 }
2222
2223 /* this thread gets the stream from the disk or the network */
2224 static int decode_thread(void *arg)
2225 {
2226     VideoState *is = arg;
2227     AVFormatContext *ic = NULL;
2228     int err, i, ret;
2229     int st_index[AVMEDIA_TYPE_NB];
2230     AVPacket pkt1, *pkt = &pkt1;
2231     int eof = 0;
2232     int pkt_in_play_range = 0;
2233     AVDictionaryEntry *t;
2234     AVDictionary **opts;
2235     int orig_nb_streams;
2236
2237     memset(st_index, -1, sizeof(st_index));
2238     is->video_stream = -1;
2239     is->audio_stream = -1;
2240     is->subtitle_stream = -1;
2241
2242     global_video_state = is;
2243
2244     ic = avformat_alloc_context();
2245     ic->interrupt_callback.callback = decode_interrupt_cb;
2246     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2247     if (err < 0) {
2248         print_error(is->filename, err);
2249         ret = -1;
2250         goto fail;
2251     }
2252     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2253         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2254         ret = AVERROR_OPTION_NOT_FOUND;
2255         goto fail;
2256     }
2257     is->ic = ic;
2258
2259     if (genpts)
2260         ic->flags |= AVFMT_FLAG_GENPTS;
2261
2262     opts = setup_find_stream_info_opts(ic, codec_opts);
2263     orig_nb_streams = ic->nb_streams;
2264
2265     err = avformat_find_stream_info(ic, opts);
2266     if (err < 0) {
2267         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2268         ret = -1;
2269         goto fail;
2270     }
2271     for (i = 0; i < orig_nb_streams; i++)
2272         av_dict_free(&opts[i]);
2273     av_freep(&opts);
2274
2275     if (ic->pb)
2276         ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2277
2278     if (seek_by_bytes < 0)
2279         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2280
2281     /* if seeking requested, we execute it */
2282     if (start_time != AV_NOPTS_VALUE) {
2283         int64_t timestamp;
2284
2285         timestamp = start_time;
2286         /* add the stream start time */
2287         if (ic->start_time != AV_NOPTS_VALUE)
2288             timestamp += ic->start_time;
2289         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2290         if (ret < 0) {
2291             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2292                     is->filename, (double)timestamp / AV_TIME_BASE);
2293         }
2294     }
2295
2296     for (i = 0; i < ic->nb_streams; i++)
2297         ic->streams[i]->discard = AVDISCARD_ALL;
2298     if (!video_disable)
2299         st_index[AVMEDIA_TYPE_VIDEO] =
2300             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2301                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2302     if (!audio_disable)
2303         st_index[AVMEDIA_TYPE_AUDIO] =
2304             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2305                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2306                                 st_index[AVMEDIA_TYPE_VIDEO],
2307                                 NULL, 0);
2308     if (!video_disable)
2309         st_index[AVMEDIA_TYPE_SUBTITLE] =
2310             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2311                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2312                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2313                                  st_index[AVMEDIA_TYPE_AUDIO] :
2314                                  st_index[AVMEDIA_TYPE_VIDEO]),
2315                                 NULL, 0);
2316     if (show_status) {
2317         av_dump_format(ic, 0, is->filename, 0);
2318     }
2319
2320     /* open the streams */
2321     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2322         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2323     }
2324
2325     ret = -1;
2326     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2327         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2328     }
2329     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2330     if (ret < 0) {
2331         if (!display_disable)
2332             is->show_audio = 2;
2333     }
2334
2335     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2336         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2337     }
2338
2339     if (is->video_stream < 0 && is->audio_stream < 0) {
2340         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2341         ret = -1;
2342         goto fail;
2343     }
2344
2345     for (;;) {
2346         if (is->abort_request)
2347             break;
2348         if (is->paused != is->last_paused) {
2349             is->last_paused = is->paused;
2350             if (is->paused)
2351                 is->read_pause_return = av_read_pause(ic);
2352             else
2353                 av_read_play(ic);
2354         }
2355 #if CONFIG_RTSP_DEMUXER
2356         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2357             /* wait 10 ms to avoid trying to get another packet */
2358             /* XXX: horrible */
2359             SDL_Delay(10);
2360             continue;
2361         }
2362 #endif
2363         if (is->seek_req) {
2364             int64_t seek_target = is->seek_pos;
2365             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2366             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2367 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2368 //      of the seek_pos/seek_rel variables
2369
2370             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2371             if (ret < 0) {
2372                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2373             } else {
2374                 if (is->audio_stream >= 0) {
2375                     packet_queue_flush(&is->audioq);
2376                     packet_queue_put(&is->audioq, &flush_pkt);
2377                 }
2378                 if (is->subtitle_stream >= 0) {
2379                     packet_queue_flush(&is->subtitleq);
2380                     packet_queue_put(&is->subtitleq, &flush_pkt);
2381                 }
2382                 if (is->video_stream >= 0) {
2383                     packet_queue_flush(&is->videoq);
2384                     packet_queue_put(&is->videoq, &flush_pkt);
2385                 }
2386             }
2387             is->seek_req = 0;
2388             eof = 0;
2389         }
2390
2391         /* if the queue are full, no need to read more */
2392         if (!infinite_buffer &&
2393               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2394             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2395                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0)
2396                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2397             /* wait 10 ms */
2398             SDL_Delay(10);
2399             continue;
2400         }
2401         if (eof) {
2402             if (is->video_stream >= 0) {
2403                 av_init_packet(pkt);
2404                 pkt->data = NULL;
2405                 pkt->size = 0;
2406                 pkt->stream_index = is->video_stream;
2407                 packet_queue_put(&is->videoq, pkt);
2408             }
2409             if (is->audio_stream >= 0 &&
2410                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2411                 av_init_packet(pkt);
2412                 pkt->data = NULL;
2413                 pkt->size = 0;
2414                 pkt->stream_index = is->audio_stream;
2415                 packet_queue_put(&is->audioq, pkt);
2416             }
2417             SDL_Delay(10);
2418             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2419                 if (loop != 1 && (!loop || --loop)) {
2420                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2421                 } else if (autoexit) {
2422                     ret = AVERROR_EOF;
2423                     goto fail;
2424                 }
2425             }
2426             continue;
2427         }
2428         ret = av_read_frame(ic, pkt);
2429         if (ret < 0) {
2430             if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2431                 eof = 1;
2432             if (ic->pb && ic->pb->error)
2433                 break;
2434             SDL_Delay(100); /* wait for user event */
2435             continue;
2436         }
2437         /* check if packet is in play range specified by user, then queue, otherwise discard */
2438         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2439                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2440                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2441                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2442                 <= ((double)duration / 1000000);
2443         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2444             packet_queue_put(&is->audioq, pkt);
2445         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2446             packet_queue_put(&is->videoq, pkt);
2447         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2448             packet_queue_put(&is->subtitleq, pkt);
2449         } else {
2450             av_free_packet(pkt);
2451         }
2452     }
2453     /* wait until the end */
2454     while (!is->abort_request) {
2455         SDL_Delay(100);
2456     }
2457
2458     ret = 0;
2459  fail:
2460     /* disable interrupting */
2461     global_video_state = NULL;
2462
2463     /* close each stream */
2464     if (is->audio_stream >= 0)
2465         stream_component_close(is, is->audio_stream);
2466     if (is->video_stream >= 0)
2467         stream_component_close(is, is->video_stream);
2468     if (is->subtitle_stream >= 0)
2469         stream_component_close(is, is->subtitle_stream);
2470     if (is->ic) {
2471         avformat_close_input(&is->ic);
2472     }
2473
2474     if (ret != 0) {
2475         SDL_Event event;
2476
2477         event.type = FF_QUIT_EVENT;
2478         event.user.data1 = is;
2479         SDL_PushEvent(&event);
2480     }
2481     return 0;
2482 }
2483
2484 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2485 {
2486     VideoState *is;
2487
2488     is = av_mallocz(sizeof(VideoState));
2489     if (!is)
2490         return NULL;
2491     av_strlcpy(is->filename, filename, sizeof(is->filename));
2492     is->iformat = iformat;
2493     is->ytop    = 0;
2494     is->xleft   = 0;
2495
2496     /* start video display */
2497     is->pictq_mutex = SDL_CreateMutex();
2498     is->pictq_cond  = SDL_CreateCond();
2499
2500     is->subpq_mutex = SDL_CreateMutex();
2501     is->subpq_cond  = SDL_CreateCond();
2502
2503     is->av_sync_type = av_sync_type;
2504     is->parse_tid    = SDL_CreateThread(decode_thread, is);
2505     if (!is->parse_tid) {
2506         av_free(is);
2507         return NULL;
2508     }
2509     return is;
2510 }
2511
2512 static void stream_cycle_channel(VideoState *is, int codec_type)
2513 {
2514     AVFormatContext *ic = is->ic;
2515     int start_index, stream_index;
2516     AVStream *st;
2517
2518     if (codec_type == AVMEDIA_TYPE_VIDEO)
2519         start_index = is->video_stream;
2520     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2521         start_index = is->audio_stream;
2522     else
2523         start_index = is->subtitle_stream;
2524     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2525         return;
2526     stream_index = start_index;
2527     for (;;) {
2528         if (++stream_index >= is->ic->nb_streams)
2529         {
2530             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2531             {
2532                 stream_index = -1;
2533                 goto the_end;
2534             } else
2535                 stream_index = 0;
2536         }
2537         if (stream_index == start_index)
2538             return;
2539         st = ic->streams[stream_index];
2540         if (st->codec->codec_type == codec_type) {
2541             /* check that parameters are OK */
2542             switch (codec_type) {
2543             case AVMEDIA_TYPE_AUDIO:
2544                 if (st->codec->sample_rate != 0 &&
2545                     st->codec->channels != 0)
2546                     goto the_end;
2547                 break;
2548             case AVMEDIA_TYPE_VIDEO:
2549             case AVMEDIA_TYPE_SUBTITLE:
2550                 goto the_end;
2551             default:
2552                 break;
2553             }
2554         }
2555     }
2556  the_end:
2557     stream_component_close(is, start_index);
2558     stream_component_open(is, stream_index);
2559 }
2560
2561
2562 static void toggle_full_screen(void)
2563 {
2564 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2565     /* OS X needs to empty the picture_queue */
2566     int i;
2567     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2568         cur_stream->pictq[i].reallocate = 1;
2569 #endif
2570     is_full_screen = !is_full_screen;
2571     video_open(cur_stream);
2572 }
2573
2574 static void toggle_pause(void)
2575 {
2576     if (cur_stream)
2577         stream_pause(cur_stream);
2578     step = 0;
2579 }
2580
2581 static void step_to_next_frame(void)
2582 {
2583     if (cur_stream) {
2584         /* if the stream is paused unpause it, then step */
2585         if (cur_stream->paused)
2586             stream_pause(cur_stream);
2587     }
2588     step = 1;
2589 }
2590
2591 static void toggle_audio_display(void)
2592 {
2593     if (cur_stream) {
2594         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2595         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2596         fill_rectangle(screen,
2597                        cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2598                        bgcolor);
2599         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2600     }
2601 }
2602
2603 /* handle an event sent by the GUI */
2604 static void event_loop(void)
2605 {
2606     SDL_Event event;
2607     double incr, pos, frac;
2608
2609     for (;;) {
2610         double x;
2611         SDL_WaitEvent(&event);
2612         switch (event.type) {
2613         case SDL_KEYDOWN:
2614             if (exit_on_keydown) {
2615                 do_exit();
2616                 break;
2617             }
2618             switch (event.key.keysym.sym) {
2619             case SDLK_ESCAPE:
2620             case SDLK_q:
2621                 do_exit();
2622                 break;
2623             case SDLK_f:
2624                 toggle_full_screen();
2625                 break;
2626             case SDLK_p:
2627             case SDLK_SPACE:
2628                 toggle_pause();
2629                 break;
2630             case SDLK_s: // S: Step to next frame
2631                 step_to_next_frame();
2632                 break;
2633             case SDLK_a:
2634                 if (cur_stream)
2635                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2636                 break;
2637             case SDLK_v:
2638                 if (cur_stream)
2639                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2640                 break;
2641             case SDLK_t:
2642                 if (cur_stream)
2643                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2644                 break;
2645             case SDLK_w:
2646                 toggle_audio_display();
2647                 break;
2648             case SDLK_LEFT:
2649                 incr = -10.0;
2650                 goto do_seek;
2651             case SDLK_RIGHT:
2652                 incr = 10.0;
2653                 goto do_seek;
2654             case SDLK_UP:
2655                 incr = 60.0;
2656                 goto do_seek;
2657             case SDLK_DOWN:
2658                 incr = -60.0;
2659             do_seek:
2660                 if (cur_stream) {
2661                     if (seek_by_bytes) {
2662                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2663                             pos = cur_stream->video_current_pos;
2664                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2665                             pos = cur_stream->audio_pkt.pos;
2666                         } else
2667                             pos = avio_tell(cur_stream->ic->pb);
2668                         if (cur_stream->ic->bit_rate)
2669                             incr *= cur_stream->ic->bit_rate / 8.0;
2670                         else
2671                             incr *= 180000.0;
2672                         pos += incr;
2673                         stream_seek(cur_stream, pos, incr, 1);
2674                     } else {
2675                         pos = get_master_clock(cur_stream);
2676                         pos += incr;
2677                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2678                     }
2679                 }
2680                 break;
2681             default:
2682                 break;
2683             }
2684             break;
2685         case SDL_MOUSEBUTTONDOWN:
2686             if (exit_on_mousedown) {
2687                 do_exit();
2688                 break;
2689             }
2690         case SDL_MOUSEMOTION:
2691             if (event.type == SDL_MOUSEBUTTONDOWN) {
2692                 x = event.button.x;
2693             } else {
2694                 if (event.motion.state != SDL_PRESSED)
2695                     break;
2696                 x = event.motion.x;
2697             }
2698             if (cur_stream) {
2699                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2700                     uint64_t size =  avio_size(cur_stream->ic->pb);
2701                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2702                 } else {
2703                     int64_t ts;
2704                     int ns, hh, mm, ss;
2705                     int tns, thh, tmm, tss;
2706                     tns  = cur_stream->ic->duration / 1000000LL;
2707                     thh  = tns / 3600;
2708                     tmm  = (tns % 3600) / 60;
2709                     tss  = (tns % 60);
2710                     frac = x / cur_stream->width;
2711                     ns   = frac * tns;
2712                     hh   = ns / 3600;
2713                     mm   = (ns % 3600) / 60;
2714                     ss   = (ns % 60);
2715                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2716                             hh, mm, ss, thh, tmm, tss);
2717                     ts = frac * cur_stream->ic->duration;
2718                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2719                         ts += cur_stream->ic->start_time;
2720                     stream_seek(cur_stream, ts, 0, 0);
2721                 }
2722             }
2723             break;
2724         case SDL_VIDEORESIZE:
2725             if (cur_stream) {
2726                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2727                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2728                 screen_width  = cur_stream->width  = event.resize.w;
2729                 screen_height = cur_stream->height = event.resize.h;
2730             }
2731             break;
2732         case SDL_QUIT:
2733         case FF_QUIT_EVENT:
2734             do_exit();
2735             break;
2736         case FF_ALLOC_EVENT:
2737             video_open(event.user.data1);
2738             alloc_picture(event.user.data1);
2739             break;
2740         case FF_REFRESH_EVENT:
2741             video_refresh_timer(event.user.data1);
2742             cur_stream->refresh = 0;
2743             break;
2744         default:
2745             break;
2746         }
2747     }
2748 }
2749
2750 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
2751 {
2752     av_log(NULL, AV_LOG_ERROR,
2753            "Option '%s' has been removed, use private format options instead\n", opt);
2754     return AVERROR(EINVAL);
2755 }
2756
2757 static int opt_width(void *optctx, const char *opt, const char *arg)
2758 {
2759     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2760     return 0;
2761 }
2762
2763 static int opt_height(void *optctx, const char *opt, const char *arg)
2764 {
2765     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2766     return 0;
2767 }
2768
2769 static int opt_format(void *optctx, const char *opt, const char *arg)
2770 {
2771     file_iformat = av_find_input_format(arg);
2772     if (!file_iformat) {
2773         fprintf(stderr, "Unknown input format: %s\n", arg);
2774         return AVERROR(EINVAL);
2775     }
2776     return 0;
2777 }
2778
2779 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
2780 {
2781     av_log(NULL, AV_LOG_ERROR,
2782            "Option '%s' has been removed, use private format options instead\n", opt);
2783     return AVERROR(EINVAL);
2784 }
2785
2786 static int opt_sync(void *optctx, const char *opt, const char *arg)
2787 {
2788     if (!strcmp(arg, "audio"))
2789         av_sync_type = AV_SYNC_AUDIO_MASTER;
2790     else if (!strcmp(arg, "video"))
2791         av_sync_type = AV_SYNC_VIDEO_MASTER;
2792     else if (!strcmp(arg, "ext"))
2793         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2794     else {
2795         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2796         exit(1);
2797     }
2798     return 0;
2799 }
2800
2801 static int opt_seek(void *optctx, const char *opt, const char *arg)
2802 {
2803     start_time = parse_time_or_die(opt, arg, 1);
2804     return 0;
2805 }
2806
2807 static int opt_duration(void *optctx, const char *opt, const char *arg)
2808 {
2809     duration = parse_time_or_die(opt, arg, 1);
2810     return 0;
2811 }
2812
2813 static const OptionDef options[] = {
2814 #include "cmdutils_common_opts.h"
2815     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
2816     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
2817     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2818     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
2819     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
2820     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
2821     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2822     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2823     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2824     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
2825     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2826     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2827     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
2828     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
2829     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
2830     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
2831     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
2832     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
2833     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
2834     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2835     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
2836     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
2837     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
2838     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo",  "algo" },
2839     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
2840     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2841     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
2842     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
2843     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
2844     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
2845     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
2846     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2847     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
2848 #if CONFIG_AVFILTER
2849     { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
2850 #endif
2851     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
2852     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { opt_default }, "generic catch all option", "" },
2853     { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2854     { NULL, },
2855 };
2856
2857 static void show_usage(void)
2858 {
2859     printf("Simple media player\n");
2860     printf("usage: %s [options] input_file\n", program_name);
2861     printf("\n");
2862 }
2863
2864 void show_help_default(const char *opt, const char *arg)
2865 {
2866     av_log_set_callback(log_callback_help);
2867     show_usage();
2868     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
2869     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
2870     printf("\n");
2871     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2872     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2873 #if !CONFIG_AVFILTER
2874     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2875 #endif
2876     printf("\nWhile playing:\n"
2877            "q, ESC              quit\n"
2878            "f                   toggle full screen\n"
2879            "p, SPC              pause\n"
2880            "a                   cycle audio channel\n"
2881            "v                   cycle video channel\n"
2882            "t                   cycle subtitle channel\n"
2883            "w                   show audio waves\n"
2884            "s                   activate frame-step mode\n"
2885            "left/right          seek backward/forward 10 seconds\n"
2886            "down/up             seek backward/forward 1 minute\n"
2887            "mouse click         seek to percentage in file corresponding to fraction of width\n"
2888            );
2889 }
2890
2891 static void opt_input_file(void *optctx, const char *filename)
2892 {
2893     if (input_filename) {
2894         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2895                 filename, input_filename);
2896         exit(1);
2897     }
2898     if (!strcmp(filename, "-"))
2899         filename = "pipe:";
2900     input_filename = filename;
2901 }
2902
2903 /* Called from the main */
2904 int main(int argc, char **argv)
2905 {
2906     int flags;
2907
2908     av_log_set_flags(AV_LOG_SKIP_REPEATED);
2909     parse_loglevel(argc, argv, options);
2910
2911     /* register all codecs, demux and protocols */
2912     avcodec_register_all();
2913 #if CONFIG_AVDEVICE
2914     avdevice_register_all();
2915 #endif
2916 #if CONFIG_AVFILTER
2917     avfilter_register_all();
2918 #endif
2919     av_register_all();
2920     avformat_network_init();
2921
2922     init_opts();
2923
2924     show_banner();
2925
2926     parse_options(NULL, argc, argv, options, opt_input_file);
2927
2928     if (!input_filename) {
2929         show_usage();
2930         fprintf(stderr, "An input file must be specified\n");
2931         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2932         exit(1);
2933     }
2934
2935     if (display_disable) {
2936         video_disable = 1;
2937     }
2938     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2939 #if !defined(__MINGW32__) && !defined(__APPLE__)
2940     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2941 #endif
2942     if (SDL_Init (flags)) {
2943         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2944         exit(1);
2945     }
2946
2947     if (!display_disable) {
2948         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2949         fs_screen_width = vi->current_w;
2950         fs_screen_height = vi->current_h;
2951     }
2952
2953     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2954     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2955     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2956
2957     av_init_packet(&flush_pkt);
2958     flush_pkt.data = (uint8_t *)&flush_pkt;
2959
2960     cur_stream = stream_open(input_filename, file_iformat);
2961
2962     event_loop();
2963
2964     /* never returns */
2965
2966     return 0;
2967 }