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

   1 /*
   2  * ffplay : Simple Media Player based on the FFmpeg libraries
   3  * Copyright (c) 2003 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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/avassert.h"
  35 #include "libavformat/avformat.h"
  36 #include "libavdevice/avdevice.h"
  37 #include "libswscale/swscale.h"
  38 #include "libavcodec/audioconvert.h"
  39 #include "libavutil/opt.h"
  40 #include "libavcodec/avfft.h"
  41
  42 #if CONFIG_AVFILTER
  43 # include "libavfilter/avcodec.h"
  44 # include "libavfilter/avfilter.h"
  45 # include "libavfilter/avfiltergraph.h"
  46 # include "libavfilter/vsink_buffer.h"
  47 #endif
  48
  49 #include <SDL.h>
  50 #include <SDL_thread.h>
  51
  52 #include "cmdutils.h"
  53
  54 #include <unistd.h>
  55 #include <assert.h>
  56
  57 const char program_name[] = "ffplay";
  58 const int program_birth_year = 2003;
  59
  60 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
  61 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
  62 #define MIN_FRAMES 5
  63
  64 /* SDL audio buffer size, in samples. Should be small to have precise
  65    A/V sync as SDL does not have hardware buffer fullness info. */
  66 #define SDL_AUDIO_BUFFER_SIZE 1024
  67
  68 /* no AV sync correction is done if below the AV sync threshold */
  69 #define AV_SYNC_THRESHOLD 0.01
  70 /* no AV correction is done if too big error */
  71 #define AV_NOSYNC_THRESHOLD 10.0
  72
  73 #define FRAME_SKIP_FACTOR 0.05
  74
  75 /* maximum audio speed change to get correct sync */
  76 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  77
  78 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  79 #define AUDIO_DIFF_AVG_NB   20
  80
  81 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
  82 #define SAMPLE_ARRAY_SIZE (2*65536)
  83
  84 static int sws_flags = SWS_BICUBIC;
  85
  86 typedef struct PacketQueue {
  87     AVPacketList *first_pkt, *last_pkt;
  88     int nb_packets;
  89     int size;
  90     int abort_request;
  91     SDL_mutex *mutex;
  92     SDL_cond *cond;
  93 } PacketQueue;
  94
  95 #define VIDEO_PICTURE_QUEUE_SIZE 2
  96 #define SUBPICTURE_QUEUE_SIZE 4
  97
  98 typedef struct VideoPicture {
  99     double pts;                                  ///<presentation time stamp for this picture
 100     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
 101     double duration;                             ///<expected duration of the frame
 102     int64_t pos;                                 ///<byte position in file
 103     SDL_Overlay *bmp;
 104     int width, height; /* source height & width */
 105     int allocated;
 106     enum PixelFormat pix_fmt;
 107
 108 #if CONFIG_AVFILTER
 109     AVFilterBufferRef *picref;
 110 #endif
 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 *read_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     /* samples output by the codec. we reserve more space for avsync
 155        compensation */
 156     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
 157     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
 158     uint8_t *audio_buf;
 159     unsigned int audio_buf_size; /* in bytes */
 160     int audio_buf_index; /* in bytes */
 161     int audio_write_buf_size;
 162     AVPacket audio_pkt_temp;
 163     AVPacket audio_pkt;
 164     enum AVSampleFormat audio_src_fmt;
 165     AVAudioConvert *reformat_ctx;
 166     double audio_current_pts;
 167     double audio_current_pts_drift;
 168
 169     enum ShowMode {
 170         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 171     } show_mode;
 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     char filename[1024];
 209     int width, height, xleft, ytop;
 210     int step;
 211
 212 #if CONFIG_AVFILTER
 213     AVFilterContext *out_video_filter;          ///<the last filter in the video chain
 214 #endif
 215
 216     float skip_frames;
 217     float skip_frames_index;
 218     int refresh;
 219 } VideoState;
 220
 221 static int opt_help(const char *opt, const char *arg);
 222
 223 /* options specified by the user */
 224 static AVInputFormat *file_iformat;
 225 static const char *input_filename;
 226 static const char *window_title;
 227 static int fs_screen_width;
 228 static int fs_screen_height;
 229 static int screen_width = 0;
 230 static int screen_height = 0;
 231 static int audio_disable;
 232 static int video_disable;
 233 static int wanted_stream[AVMEDIA_TYPE_NB]={
 234     [AVMEDIA_TYPE_AUDIO]=-1,
 235     [AVMEDIA_TYPE_VIDEO]=-1,
 236     [AVMEDIA_TYPE_SUBTITLE]=-1,
 237 };
 238 static int seek_by_bytes=-1;
 239 static int display_disable;
 240 static int show_status = 1;
 241 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 242 static int64_t start_time = AV_NOPTS_VALUE;
 243 static int64_t duration = AV_NOPTS_VALUE;
 244 static int thread_count = 1;
 245 static int workaround_bugs = 1;
 246 static int fast = 0;
 247 static int genpts = 0;
 248 static int lowres = 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_recognition = FF_ER_CAREFUL;
 254 static int error_concealment = 3;
 255 static int decoder_reorder_pts= -1;
 256 static int autoexit;
 257 static int exit_on_keydown;
 258 static int exit_on_mousedown;
 259 static int loop=1;
 260 static int framedrop=-1;
 261 static enum ShowMode show_mode = SHOW_MODE_NONE;
 262
 263 static int rdftspeed=20;
 264 #if CONFIG_AVFILTER
 265 static char *vfilters = NULL;
 266 #endif
 267
 268 /* current context */
 269 static int is_full_screen;
 270 static VideoState *cur_stream;
 271 static int64_t audio_callback_time;
 272
 273 static AVPacket flush_pkt;
 274
 275 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 276 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
 277 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 278
 279 static SDL_Surface *screen;
 280
 281 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 282 {
 283     AVPacketList *pkt1;
 284
 285     /* duplicate the packet */
 286     if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
 287         return -1;
 288
 289     pkt1 = av_malloc(sizeof(AVPacketList));
 290     if (!pkt1)
 291         return -1;
 292     pkt1->pkt = *pkt;
 293     pkt1->next = NULL;
 294
 295
 296     SDL_LockMutex(q->mutex);
 297
 298     if (!q->last_pkt)
 299
 300         q->first_pkt = pkt1;
 301     else
 302         q->last_pkt->next = pkt1;
 303     q->last_pkt = pkt1;
 304     q->nb_packets++;
 305     q->size += pkt1->pkt.size + sizeof(*pkt1);
 306     /* XXX: should duplicate packet data in DV case */
 307     SDL_CondSignal(q->cond);
 308
 309     SDL_UnlockMutex(q->mutex);
 310     return 0;
 311 }
 312
 313 /* packet queue handling */
 314 static void packet_queue_init(PacketQueue *q)
 315 {
 316     memset(q, 0, sizeof(PacketQueue));
 317     q->mutex = SDL_CreateMutex();
 318     q->cond = SDL_CreateCond();
 319     packet_queue_put(q, &flush_pkt);
 320 }
 321
 322 static void packet_queue_flush(PacketQueue *q)
 323 {
 324     AVPacketList *pkt, *pkt1;
 325
 326     SDL_LockMutex(q->mutex);
 327     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 328         pkt1 = pkt->next;
 329         av_free_packet(&pkt->pkt);
 330         av_freep(&pkt);
 331     }
 332     q->last_pkt = NULL;
 333     q->first_pkt = NULL;
 334     q->nb_packets = 0;
 335     q->size = 0;
 336     SDL_UnlockMutex(q->mutex);
 337 }
 338
 339 static void packet_queue_end(PacketQueue *q)
 340 {
 341     packet_queue_flush(q);
 342     SDL_DestroyMutex(q->mutex);
 343     SDL_DestroyCond(q->cond);
 344 }
 345
 346 static void packet_queue_abort(PacketQueue *q)
 347 {
 348     SDL_LockMutex(q->mutex);
 349
 350     q->abort_request = 1;
 351
 352     SDL_CondSignal(q->cond);
 353
 354     SDL_UnlockMutex(q->mutex);
 355 }
 356
 357 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 358 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
 359 {
 360     AVPacketList *pkt1;
 361     int ret;
 362
 363     SDL_LockMutex(q->mutex);
 364
 365     for(;;) {
 366         if (q->abort_request) {
 367             ret = -1;
 368             break;
 369         }
 370
 371         pkt1 = q->first_pkt;
 372         if (pkt1) {
 373             q->first_pkt = pkt1->next;
 374             if (!q->first_pkt)
 375                 q->last_pkt = NULL;
 376             q->nb_packets--;
 377             q->size -= pkt1->pkt.size + sizeof(*pkt1);
 378             *pkt = pkt1->pkt;
 379             av_free(pkt1);
 380             ret = 1;
 381             break;
 382         } else if (!block) {
 383             ret = 0;
 384             break;
 385         } else {
 386             SDL_CondWait(q->cond, q->mutex);
 387         }
 388     }
 389     SDL_UnlockMutex(q->mutex);
 390     return ret;
 391 }
 392
 393 static inline void fill_rectangle(SDL_Surface *screen,
 394                                   int x, int y, int w, int h, int color)
 395 {
 396     SDL_Rect rect;
 397     rect.x = x;
 398     rect.y = y;
 399     rect.w = w;
 400     rect.h = h;
 401     SDL_FillRect(screen, &rect, color);
 402 }
 403
 404 #define ALPHA_BLEND(a, oldp, newp, s)\
 405 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 406
 407 #define RGBA_IN(r, g, b, a, s)\
 408 {\
 409     unsigned int v = ((const uint32_t *)(s))[0];\
 410     a = (v >> 24) & 0xff;\
 411     r = (v >> 16) & 0xff;\
 412     g = (v >> 8) & 0xff;\
 413     b = v & 0xff;\
 414 }
 415
 416 #define YUVA_IN(y, u, v, a, s, pal)\
 417 {\
 418     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 419     a = (val >> 24) & 0xff;\
 420     y = (val >> 16) & 0xff;\
 421     u = (val >> 8) & 0xff;\
 422     v = val & 0xff;\
 423 }
 424
 425 #define YUVA_OUT(d, y, u, v, a)\
 426 {\
 427     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 428 }
 429
 430
 431 #define BPP 1
 432
 433 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 434 {
 435     int wrap, wrap3, width2, skip2;
 436     int y, u, v, a, u1, v1, a1, w, h;
 437     uint8_t *lum, *cb, *cr;
 438     const uint8_t *p;
 439     const uint32_t *pal;
 440     int dstx, dsty, dstw, dsth;
 441
 442     dstw = av_clip(rect->w, 0, imgw);
 443     dsth = av_clip(rect->h, 0, imgh);
 444     dstx = av_clip(rect->x, 0, imgw - dstw);
 445     dsty = av_clip(rect->y, 0, imgh - dsth);
 446     lum = dst->data[0] + dsty * dst->linesize[0];
 447     cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 448     cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 449
 450     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 451     skip2 = dstx >> 1;
 452     wrap = dst->linesize[0];
 453     wrap3 = rect->pict.linesize[0];
 454     p = rect->pict.data[0];
 455     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 456
 457     if (dsty & 1) {
 458         lum += dstx;
 459         cb += skip2;
 460         cr += skip2;
 461
 462         if (dstx & 1) {
 463             YUVA_IN(y, u, v, a, p, pal);
 464             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 465             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 466             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 467             cb++;
 468             cr++;
 469             lum++;
 470             p += BPP;
 471         }
 472         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
 473             YUVA_IN(y, u, v, a, p, pal);
 474             u1 = u;
 475             v1 = v;
 476             a1 = a;
 477             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 478
 479             YUVA_IN(y, u, v, a, p + BPP, pal);
 480             u1 += u;
 481             v1 += v;
 482             a1 += a;
 483             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 484             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 485             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 486             cb++;
 487             cr++;
 488             p += 2 * BPP;
 489             lum += 2;
 490         }
 491         if (w) {
 492             YUVA_IN(y, u, v, a, p, pal);
 493             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 494             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 495             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 496             p++;
 497             lum++;
 498         }
 499         p += wrap3 - dstw * BPP;
 500         lum += wrap - dstw - dstx;
 501         cb += dst->linesize[1] - width2 - skip2;
 502         cr += dst->linesize[2] - width2 - skip2;
 503     }
 504     for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
 505         lum += dstx;
 506         cb += skip2;
 507         cr += skip2;
 508
 509         if (dstx & 1) {
 510             YUVA_IN(y, u, v, a, p, pal);
 511             u1 = u;
 512             v1 = v;
 513             a1 = a;
 514             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 515             p += wrap3;
 516             lum += wrap;
 517             YUVA_IN(y, u, v, a, p, pal);
 518             u1 += u;
 519             v1 += v;
 520             a1 += a;
 521             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 522             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 523             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 524             cb++;
 525             cr++;
 526             p += -wrap3 + BPP;
 527             lum += -wrap + 1;
 528         }
 529         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
 530             YUVA_IN(y, u, v, a, p, pal);
 531             u1 = u;
 532             v1 = v;
 533             a1 = a;
 534             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 535
 536             YUVA_IN(y, u, v, a, p + BPP, pal);
 537             u1 += u;
 538             v1 += v;
 539             a1 += a;
 540             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 541             p += wrap3;
 542             lum += wrap;
 543
 544             YUVA_IN(y, u, v, a, p, pal);
 545             u1 += u;
 546             v1 += v;
 547             a1 += a;
 548             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 549
 550             YUVA_IN(y, u, v, a, p + BPP, pal);
 551             u1 += u;
 552             v1 += v;
 553             a1 += a;
 554             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 555
 556             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 557             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 558
 559             cb++;
 560             cr++;
 561             p += -wrap3 + 2 * BPP;
 562             lum += -wrap + 2;
 563         }
 564         if (w) {
 565             YUVA_IN(y, u, v, a, p, pal);
 566             u1 = u;
 567             v1 = v;
 568             a1 = a;
 569             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 570             p += wrap3;
 571             lum += wrap;
 572             YUVA_IN(y, u, v, a, p, pal);
 573             u1 += u;
 574             v1 += v;
 575             a1 += a;
 576             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 577             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 578             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 579             cb++;
 580             cr++;
 581             p += -wrap3 + BPP;
 582             lum += -wrap + 1;
 583         }
 584         p += wrap3 + (wrap3 - dstw * BPP);
 585         lum += wrap + (wrap - dstw - dstx);
 586         cb += dst->linesize[1] - width2 - skip2;
 587         cr += dst->linesize[2] - width2 - skip2;
 588     }
 589     /* handle odd height */
 590     if (h) {
 591         lum += dstx;
 592         cb += skip2;
 593         cr += skip2;
 594
 595         if (dstx & 1) {
 596             YUVA_IN(y, u, v, a, p, pal);
 597             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 598             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 599             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 600             cb++;
 601             cr++;
 602             lum++;
 603             p += BPP;
 604         }
 605         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
 606             YUVA_IN(y, u, v, a, p, pal);
 607             u1 = u;
 608             v1 = v;
 609             a1 = a;
 610             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 611
 612             YUVA_IN(y, u, v, a, p + BPP, pal);
 613             u1 += u;
 614             v1 += v;
 615             a1 += a;
 616             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 617             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
 618             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
 619             cb++;
 620             cr++;
 621             p += 2 * BPP;
 622             lum += 2;
 623         }
 624         if (w) {
 625             YUVA_IN(y, u, v, a, p, pal);
 626             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 627             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 628             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 629         }
 630     }
 631 }
 632
 633 static void free_subpicture(SubPicture *sp)
 634 {
 635     avsubtitle_free(&sp->sub);
 636 }
 637
 638 static void video_image_display(VideoState *is)
 639 {
 640     VideoPicture *vp;
 641     SubPicture *sp;
 642     AVPicture pict;
 643     float aspect_ratio;
 644     int width, height, x, y;
 645     SDL_Rect rect;
 646     int i;
 647
 648     vp = &is->pictq[is->pictq_rindex];
 649     if (vp->bmp) {
 650 #if CONFIG_AVFILTER
 651          if (vp->picref->video->sample_aspect_ratio.num == 0)
 652              aspect_ratio = 0;
 653          else
 654              aspect_ratio = av_q2d(vp->picref->video->sample_aspect_ratio);
 655 #else
 656
 657         /* XXX: use variable in the frame */
 658         if (is->video_st->sample_aspect_ratio.num)
 659             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
 660         else if (is->video_st->codec->sample_aspect_ratio.num)
 661             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
 662         else
 663             aspect_ratio = 0;
 664 #endif
 665         if (aspect_ratio <= 0.0)
 666             aspect_ratio = 1.0;
 667         aspect_ratio *= (float)vp->width / (float)vp->height;
 668
 669         if (is->subtitle_st) {
 670             if (is->subpq_size > 0) {
 671                 sp = &is->subpq[is->subpq_rindex];
 672
 673                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
 674                     SDL_LockYUVOverlay (vp->bmp);
 675
 676                     pict.data[0] = vp->bmp->pixels[0];
 677                     pict.data[1] = vp->bmp->pixels[2];
 678                     pict.data[2] = vp->bmp->pixels[1];
 679
 680                     pict.linesize[0] = vp->bmp->pitches[0];
 681                     pict.linesize[1] = vp->bmp->pitches[2];
 682                     pict.linesize[2] = vp->bmp->pitches[1];
 683
 684                     for (i = 0; i < sp->sub.num_rects; i++)
 685                         blend_subrect(&pict, sp->sub.rects[i],
 686                                       vp->bmp->w, vp->bmp->h);
 687
 688                     SDL_UnlockYUVOverlay (vp->bmp);
 689                 }
 690             }
 691         }
 692
 693
 694         /* XXX: we suppose the screen has a 1.0 pixel ratio */
 695         height = is->height;
 696         width = ((int)rint(height * aspect_ratio)) & ~1;
 697         if (width > is->width) {
 698             width = is->width;
 699             height = ((int)rint(width / aspect_ratio)) & ~1;
 700         }
 701         x = (is->width - width) / 2;
 702         y = (is->height - height) / 2;
 703         is->no_background = 0;
 704         rect.x = is->xleft + x;
 705         rect.y = is->ytop  + y;
 706         rect.w = FFMAX(width,  1);
 707         rect.h = FFMAX(height, 1);
 708         SDL_DisplayYUVOverlay(vp->bmp, &rect);
 709     }
 710 }
 711
 712 static inline int compute_mod(int a, int b)
 713 {
 714     return a < 0 ? a%b + b : a%b;
 715 }
 716
 717 static void video_audio_display(VideoState *s)
 718 {
 719     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 720     int ch, channels, h, h2, bgcolor, fgcolor;
 721     int16_t time_diff;
 722     int rdft_bits, nb_freq;
 723
 724     for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
 725         ;
 726     nb_freq= 1<<(rdft_bits-1);
 727
 728     /* compute display index : center on currently output samples */
 729     channels = s->audio_st->codec->channels;
 730     nb_display_channels = channels;
 731     if (!s->paused) {
 732         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
 733         n = 2 * channels;
 734         delay = s->audio_write_buf_size;
 735         delay /= n;
 736
 737         /* to be more precise, we take into account the time spent since
 738            the last buffer computation */
 739         if (audio_callback_time) {
 740             time_diff = av_gettime() - audio_callback_time;
 741             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
 742         }
 743
 744         delay += 2*data_used;
 745         if (delay < data_used)
 746             delay = data_used;
 747
 748         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 749         if (s->show_mode == SHOW_MODE_WAVES) {
 750             h= INT_MIN;
 751             for(i=0; i<1000; i+=channels){
 752                 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
 753                 int a= s->sample_array[idx];
 754                 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
 755                 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
 756                 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
 757                 int score= a-d;
 758                 if(h<score && (b^c)<0){
 759                     h= score;
 760                     i_start= idx;
 761                 }
 762             }
 763         }
 764
 765         s->last_i_start = i_start;
 766     } else {
 767         i_start = s->last_i_start;
 768     }
 769
 770     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 771     if (s->show_mode == SHOW_MODE_WAVES) {
 772         fill_rectangle(screen,
 773                        s->xleft, s->ytop, s->width, s->height,
 774                        bgcolor);
 775
 776         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 777
 778         /* total height for one channel */
 779         h = s->height / nb_display_channels;
 780         /* graph height / 2 */
 781         h2 = (h * 9) / 20;
 782         for(ch = 0;ch < nb_display_channels; ch++) {
 783             i = i_start + ch;
 784             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 785             for(x = 0; x < s->width; x++) {
 786                 y = (s->sample_array[i] * h2) >> 15;
 787                 if (y < 0) {
 788                     y = -y;
 789                     ys = y1 - y;
 790                 } else {
 791                     ys = y1;
 792                 }
 793                 fill_rectangle(screen,
 794                                s->xleft + x, ys, 1, y,
 795                                fgcolor);
 796                 i += channels;
 797                 if (i >= SAMPLE_ARRAY_SIZE)
 798                     i -= SAMPLE_ARRAY_SIZE;
 799             }
 800         }
 801
 802         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 803
 804         for(ch = 1;ch < nb_display_channels; ch++) {
 805             y = s->ytop + ch * h;
 806             fill_rectangle(screen,
 807                            s->xleft, y, s->width, 1,
 808                            fgcolor);
 809         }
 810         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 811     }else{
 812         nb_display_channels= FFMIN(nb_display_channels, 2);
 813         if(rdft_bits != s->rdft_bits){
 814             av_rdft_end(s->rdft);
 815             av_free(s->rdft_data);
 816             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
 817             s->rdft_bits= rdft_bits;
 818             s->rdft_data= av_malloc(4*nb_freq*sizeof(*s->rdft_data));
 819         }
 820         {
 821             FFTSample *data[2];
 822             for(ch = 0;ch < nb_display_channels; ch++) {
 823                 data[ch] = s->rdft_data + 2*nb_freq*ch;
 824                 i = i_start + ch;
 825                 for(x = 0; x < 2*nb_freq; x++) {
 826                     double w= (x-nb_freq)*(1.0/nb_freq);
 827                     data[ch][x]= s->sample_array[i]*(1.0-w*w);
 828                     i += channels;
 829                     if (i >= SAMPLE_ARRAY_SIZE)
 830                         i -= SAMPLE_ARRAY_SIZE;
 831                 }
 832                 av_rdft_calc(s->rdft, data[ch]);
 833             }
 834             //least efficient way to do this, we should of course directly access it but its more than fast enough
 835             for(y=0; y<s->height; y++){
 836                 double w= 1/sqrt(nb_freq);
 837                 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]));
 838                 int b= (nb_display_channels == 2 ) ? sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0]
 839                        + data[1][2*y+1]*data[1][2*y+1])) : a;
 840                 a= FFMIN(a,255);
 841                 b= FFMIN(b,255);
 842                 fgcolor = SDL_MapRGB(screen->format, a, b, (a+b)/2);
 843
 844                 fill_rectangle(screen,
 845                             s->xpos, s->height-y, 1, 1,
 846                             fgcolor);
 847             }
 848         }
 849         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
 850         s->xpos++;
 851         if(s->xpos >= s->width)
 852             s->xpos= s->xleft;
 853     }
 854 }
 855
 856 static void stream_close(VideoState *is)
 857 {
 858     VideoPicture *vp;
 859     int i;
 860     /* XXX: use a special url_shutdown call to abort parse cleanly */
 861     is->abort_request = 1;
 862     SDL_WaitThread(is->read_tid, NULL);
 863     SDL_WaitThread(is->refresh_tid, NULL);
 864
 865     /* free all pictures */
 866     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
 867         vp = &is->pictq[i];
 868 #if CONFIG_AVFILTER
 869         if (vp->picref) {
 870             avfilter_unref_buffer(vp->picref);
 871             vp->picref = NULL;
 872         }
 873 #endif
 874         if (vp->bmp) {
 875             SDL_FreeYUVOverlay(vp->bmp);
 876             vp->bmp = NULL;
 877         }
 878     }
 879     SDL_DestroyMutex(is->pictq_mutex);
 880     SDL_DestroyCond(is->pictq_cond);
 881     SDL_DestroyMutex(is->subpq_mutex);
 882     SDL_DestroyCond(is->subpq_cond);
 883 #if !CONFIG_AVFILTER
 884     if (is->img_convert_ctx)
 885         sws_freeContext(is->img_convert_ctx);
 886 #endif
 887     av_free(is);
 888 }
 889
 890 static void do_exit(void)
 891 {
 892     if (cur_stream) {
 893         stream_close(cur_stream);
 894         cur_stream = NULL;
 895     }
 896     uninit_opts();
 897 #if CONFIG_AVFILTER
 898     avfilter_uninit();
 899 #endif
 900     if (show_status)
 901         printf("\n");
 902     SDL_Quit();
 903     av_log(NULL, AV_LOG_QUIET, "%s", "");
 904     exit(0);
 905 }
 906
 907 static int video_open(VideoState *is){
 908     int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
 909     int w,h;
 910
 911     if(is_full_screen) flags |= SDL_FULLSCREEN;
 912     else               flags |= SDL_RESIZABLE;
 913
 914     if (is_full_screen && fs_screen_width) {
 915         w = fs_screen_width;
 916         h = fs_screen_height;
 917     } else if(!is_full_screen && screen_width){
 918         w = screen_width;
 919         h = screen_height;
 920 #if CONFIG_AVFILTER
 921     }else if (is->out_video_filter && is->out_video_filter->inputs[0]){
 922         w = is->out_video_filter->inputs[0]->w;
 923         h = is->out_video_filter->inputs[0]->h;
 924 #else
 925     }else if (is->video_st && is->video_st->codec->width){
 926         w = is->video_st->codec->width;
 927         h = is->video_st->codec->height;
 928 #endif
 929     } else {
 930         w = 640;
 931         h = 480;
 932     }
 933     if(screen && is->width == screen->w && screen->w == w
 934        && is->height== screen->h && screen->h == h)
 935         return 0;
 936
 937 #ifndef __APPLE__
 938     screen = SDL_SetVideoMode(w, h, 0, flags);
 939 #else
 940     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
 941     screen = SDL_SetVideoMode(w, h, 24, flags);
 942 #endif
 943     if (!screen) {
 944         fprintf(stderr, "SDL: could not set video mode - exiting\n");
 945         do_exit();
 946     }
 947     if (!window_title)
 948         window_title = input_filename;
 949     SDL_WM_SetCaption(window_title, window_title);
 950
 951     is->width = screen->w;
 952     is->height = screen->h;
 953
 954     return 0;
 955 }
 956
 957 /* display the current picture, if any */
 958 static void video_display(VideoState *is)
 959 {
 960     if(!screen)
 961         video_open(cur_stream);
 962     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
 963         video_audio_display(is);
 964     else if (is->video_st)
 965         video_image_display(is);
 966 }
 967
 968 static int refresh_thread(void *opaque)
 969 {
 970     VideoState *is= opaque;
 971     while(!is->abort_request){
 972         SDL_Event event;
 973         event.type = FF_REFRESH_EVENT;
 974         event.user.data1 = opaque;
 975         if(!is->refresh){
 976             is->refresh=1;
 977             SDL_PushEvent(&event);
 978         }
 979         //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
 980         usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
 981     }
 982     return 0;
 983 }
 984
 985 /* get the current audio clock value */
 986 static double get_audio_clock(VideoState *is)
 987 {
 988     if (is->paused) {
 989         return is->audio_current_pts;
 990     } else {
 991         return is->audio_current_pts_drift + av_gettime() / 1000000.0;
 992     }
 993 }
 994
 995 /* get the current video clock value */
 996 static double get_video_clock(VideoState *is)
 997 {
 998     if (is->paused) {
 999         return is->video_current_pts;
1000     } else {
1001         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1002     }
1003 }
1004
1005 /* get the current external clock value */
1006 static double get_external_clock(VideoState *is)
1007 {
1008     int64_t ti;
1009     ti = av_gettime();
1010     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1011 }
1012
1013 /* get the current master clock value */
1014 static double get_master_clock(VideoState *is)
1015 {
1016     double val;
1017
1018     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1019         if (is->video_st)
1020             val = get_video_clock(is);
1021         else
1022             val = get_audio_clock(is);
1023     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1024         if (is->audio_st)
1025             val = get_audio_clock(is);
1026         else
1027             val = get_video_clock(is);
1028     } else {
1029         val = get_external_clock(is);
1030     }
1031     return val;
1032 }
1033
1034 /* seek in the stream */
1035 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1036 {
1037     if (!is->seek_req) {
1038         is->seek_pos = pos;
1039         is->seek_rel = rel;
1040         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1041         if (seek_by_bytes)
1042             is->seek_flags |= AVSEEK_FLAG_BYTE;
1043         is->seek_req = 1;
1044     }
1045 }
1046
1047 /* pause or resume the video */
1048 static void stream_toggle_pause(VideoState *is)
1049 {
1050     if (is->paused) {
1051         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1052         if(is->read_pause_return != AVERROR(ENOSYS)){
1053             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1054         }
1055         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1056     }
1057     is->paused = !is->paused;
1058 }
1059
1060 static double compute_target_time(double frame_current_pts, VideoState *is)
1061 {
1062     double delay, sync_threshold, diff;
1063
1064     /* compute nominal delay */
1065     delay = frame_current_pts - is->frame_last_pts;
1066     if (delay <= 0 || delay >= 10.0) {
1067         /* if incorrect delay, use previous one */
1068         delay = is->frame_last_delay;
1069     } else {
1070         is->frame_last_delay = delay;
1071     }
1072     is->frame_last_pts = frame_current_pts;
1073
1074     /* update delay to follow master synchronisation source */
1075     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1076          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1077         /* if video is slave, we try to correct big delays by
1078            duplicating or deleting a frame */
1079         diff = get_video_clock(is) - get_master_clock(is);
1080
1081         /* skip or repeat frame. We take into account the
1082            delay to compute the threshold. I still don't know
1083            if it is the best guess */
1084         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1085         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1086             if (diff <= -sync_threshold)
1087                 delay = 0;
1088             else if (diff >= sync_threshold)
1089                 delay = 2 * delay;
1090         }
1091     }
1092     is->frame_timer += delay;
1093
1094     av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1095             delay, frame_current_pts, -diff);
1096
1097     return is->frame_timer;
1098 }
1099
1100 /* called to display each frame */
1101 static void video_refresh(void *opaque)
1102 {
1103     VideoState *is = opaque;
1104     VideoPicture *vp;
1105
1106     SubPicture *sp, *sp2;
1107
1108     if (is->video_st) {
1109 retry:
1110         if (is->pictq_size == 0) {
1111             //nothing to do, no picture to display in the que
1112         } else {
1113             double time= av_gettime()/1000000.0;
1114             double next_target;
1115             /* dequeue the picture */
1116             vp = &is->pictq[is->pictq_rindex];
1117
1118             if(time < vp->target_clock)
1119                 return;
1120             /* update current video pts */
1121             is->video_current_pts = vp->pts;
1122             is->video_current_pts_drift = is->video_current_pts - time;
1123             is->video_current_pos = vp->pos;
1124             if(is->pictq_size > 1){
1125                 VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
1126                 assert(nextvp->target_clock >= vp->target_clock);
1127                 next_target= nextvp->target_clock;
1128             }else{
1129                 next_target= vp->target_clock + vp->duration;
1130             }
1131             if((framedrop>0 || (framedrop && is->audio_st)) && time > next_target){
1132                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1133                 if(is->pictq_size > 1 || time > next_target + 0.5){
1134                     /* update queue size and signal for next picture */
1135                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1136                         is->pictq_rindex = 0;
1137
1138                     SDL_LockMutex(is->pictq_mutex);
1139                     is->pictq_size--;
1140                     SDL_CondSignal(is->pictq_cond);
1141                     SDL_UnlockMutex(is->pictq_mutex);
1142                     goto retry;
1143                 }
1144             }
1145
1146             if(is->subtitle_st) {
1147                 if (is->subtitle_stream_changed) {
1148                     SDL_LockMutex(is->subpq_mutex);
1149
1150                     while (is->subpq_size) {
1151                         free_subpicture(&is->subpq[is->subpq_rindex]);
1152
1153                         /* update queue size and signal for next picture */
1154                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1155                             is->subpq_rindex = 0;
1156
1157                         is->subpq_size--;
1158                     }
1159                     is->subtitle_stream_changed = 0;
1160
1161                     SDL_CondSignal(is->subpq_cond);
1162                     SDL_UnlockMutex(is->subpq_mutex);
1163                 } else {
1164                     if (is->subpq_size > 0) {
1165                         sp = &is->subpq[is->subpq_rindex];
1166
1167                         if (is->subpq_size > 1)
1168                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1169                         else
1170                             sp2 = NULL;
1171
1172                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1173                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1174                         {
1175                             free_subpicture(sp);
1176
1177                             /* update queue size and signal for next picture */
1178                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1179                                 is->subpq_rindex = 0;
1180
1181                             SDL_LockMutex(is->subpq_mutex);
1182                             is->subpq_size--;
1183                             SDL_CondSignal(is->subpq_cond);
1184                             SDL_UnlockMutex(is->subpq_mutex);
1185                         }
1186                     }
1187                 }
1188             }
1189
1190             /* display picture */
1191             if (!display_disable)
1192                 video_display(is);
1193
1194             /* update queue size and signal for next picture */
1195             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1196                 is->pictq_rindex = 0;
1197
1198             SDL_LockMutex(is->pictq_mutex);
1199             is->pictq_size--;
1200             SDL_CondSignal(is->pictq_cond);
1201             SDL_UnlockMutex(is->pictq_mutex);
1202         }
1203     } else if (is->audio_st) {
1204         /* draw the next audio frame */
1205
1206         /* if only audio stream, then display the audio bars (better
1207            than nothing, just to test the implementation */
1208
1209         /* display picture */
1210         if (!display_disable)
1211             video_display(is);
1212     }
1213     if (show_status) {
1214         static int64_t last_time;
1215         int64_t cur_time;
1216         int aqsize, vqsize, sqsize;
1217         double av_diff;
1218
1219         cur_time = av_gettime();
1220         if (!last_time || (cur_time - last_time) >= 30000) {
1221             aqsize = 0;
1222             vqsize = 0;
1223             sqsize = 0;
1224             if (is->audio_st)
1225                 aqsize = is->audioq.size;
1226             if (is->video_st)
1227                 vqsize = is->videoq.size;
1228             if (is->subtitle_st)
1229                 sqsize = is->subtitleq.size;
1230             av_diff = 0;
1231             if (is->audio_st && is->video_st)
1232                 av_diff = get_audio_clock(is) - get_video_clock(is);
1233             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1234                    get_master_clock(is),
1235                    av_diff,
1236                    FFMAX(is->skip_frames-1, 0),
1237                    aqsize / 1024,
1238                    vqsize / 1024,
1239                    sqsize,
1240                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1241                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1242             fflush(stdout);
1243             last_time = cur_time;
1244         }
1245     }
1246 }
1247
1248 /* allocate a picture (needs to do that in main thread to avoid
1249    potential locking problems */
1250 static void alloc_picture(void *opaque)
1251 {
1252     VideoState *is = opaque;
1253     VideoPicture *vp;
1254
1255     vp = &is->pictq[is->pictq_windex];
1256
1257     if (vp->bmp)
1258         SDL_FreeYUVOverlay(vp->bmp);
1259
1260 #if CONFIG_AVFILTER
1261     if (vp->picref)
1262         avfilter_unref_buffer(vp->picref);
1263     vp->picref = NULL;
1264
1265     vp->width   = is->out_video_filter->inputs[0]->w;
1266     vp->height  = is->out_video_filter->inputs[0]->h;
1267     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1268 #else
1269     vp->width   = is->video_st->codec->width;
1270     vp->height  = is->video_st->codec->height;
1271     vp->pix_fmt = is->video_st->codec->pix_fmt;
1272 #endif
1273
1274     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1275                                    SDL_YV12_OVERLAY,
1276                                    screen);
1277     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1278         /* SDL allocates a buffer smaller than requested if the video
1279          * overlay hardware is unable to support the requested size. */
1280         fprintf(stderr, "Error: the video system does not support an image\n"
1281                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1282                         "to reduce the image size.\n", vp->width, vp->height );
1283         do_exit();
1284     }
1285
1286     SDL_LockMutex(is->pictq_mutex);
1287     vp->allocated = 1;
1288     SDL_CondSignal(is->pictq_cond);
1289     SDL_UnlockMutex(is->pictq_mutex);
1290 }
1291
1292 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1293 {
1294     VideoPicture *vp;
1295     double frame_delay, pts = pts1;
1296
1297     /* compute the exact PTS for the picture if it is omitted in the stream
1298      * pts1 is the dts of the pkt / pts of the frame */
1299     if (pts != 0) {
1300         /* update video clock with pts, if present */
1301         is->video_clock = pts;
1302     } else {
1303         pts = is->video_clock;
1304     }
1305     /* update video clock for next frame */
1306     frame_delay = av_q2d(is->video_st->codec->time_base);
1307     /* for MPEG2, the frame can be repeated, so we update the
1308        clock accordingly */
1309     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1310     is->video_clock += frame_delay;
1311
1312 #if defined(DEBUG_SYNC) && 0
1313     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1314            av_get_picture_type_char(src_frame->pict_type), pts, pts1);
1315 #endif
1316
1317     /* wait until we have space to put a new picture */
1318     SDL_LockMutex(is->pictq_mutex);
1319
1320     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1321         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1322
1323     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1324            !is->videoq.abort_request) {
1325         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1326     }
1327     SDL_UnlockMutex(is->pictq_mutex);
1328
1329     if (is->videoq.abort_request)
1330         return -1;
1331
1332     vp = &is->pictq[is->pictq_windex];
1333
1334     vp->duration = frame_delay;
1335
1336     /* alloc or resize hardware picture buffer */
1337     if (!vp->bmp ||
1338 #if CONFIG_AVFILTER
1339         vp->width  != is->out_video_filter->inputs[0]->w ||
1340         vp->height != is->out_video_filter->inputs[0]->h) {
1341 #else
1342         vp->width != is->video_st->codec->width ||
1343         vp->height != is->video_st->codec->height) {
1344 #endif
1345         SDL_Event event;
1346
1347         vp->allocated = 0;
1348
1349         /* the allocation must be done in the main thread to avoid
1350            locking problems */
1351         event.type = FF_ALLOC_EVENT;
1352         event.user.data1 = is;
1353         SDL_PushEvent(&event);
1354
1355         /* wait until the picture is allocated */
1356         SDL_LockMutex(is->pictq_mutex);
1357         while (!vp->allocated && !is->videoq.abort_request) {
1358             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1359         }
1360         SDL_UnlockMutex(is->pictq_mutex);
1361
1362         if (is->videoq.abort_request)
1363             return -1;
1364     }
1365
1366     /* if the frame is not skipped, then display it */
1367     if (vp->bmp) {
1368         AVPicture pict;
1369 #if CONFIG_AVFILTER
1370         if(vp->picref)
1371             avfilter_unref_buffer(vp->picref);
1372         vp->picref = src_frame->opaque;
1373 #endif
1374
1375         /* get a pointer on the bitmap */
1376         SDL_LockYUVOverlay (vp->bmp);
1377
1378         memset(&pict,0,sizeof(AVPicture));
1379         pict.data[0] = vp->bmp->pixels[0];
1380         pict.data[1] = vp->bmp->pixels[2];
1381         pict.data[2] = vp->bmp->pixels[1];
1382
1383         pict.linesize[0] = vp->bmp->pitches[0];
1384         pict.linesize[1] = vp->bmp->pitches[2];
1385         pict.linesize[2] = vp->bmp->pitches[1];
1386
1387 #if CONFIG_AVFILTER
1388         //FIXME use direct rendering
1389         av_picture_copy(&pict, (AVPicture *)src_frame,
1390                         vp->pix_fmt, vp->width, vp->height);
1391 #else
1392         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1393         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1394             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1395             PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1396         if (is->img_convert_ctx == NULL) {
1397             fprintf(stderr, "Cannot initialize the conversion context\n");
1398             exit(1);
1399         }
1400         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1401                   0, vp->height, pict.data, pict.linesize);
1402 #endif
1403         /* update the bitmap content */
1404         SDL_UnlockYUVOverlay(vp->bmp);
1405
1406         vp->pts = pts;
1407         vp->pos = pos;
1408
1409         /* now we can update the picture count */
1410         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1411             is->pictq_windex = 0;
1412         SDL_LockMutex(is->pictq_mutex);
1413         vp->target_clock= compute_target_time(vp->pts, is);
1414
1415         is->pictq_size++;
1416         SDL_UnlockMutex(is->pictq_mutex);
1417     }
1418     return 0;
1419 }
1420
1421 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1422 {
1423     int got_picture, i;
1424
1425     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1426         return -1;
1427
1428     if (pkt->data == flush_pkt.data) {
1429         avcodec_flush_buffers(is->video_st->codec);
1430
1431         SDL_LockMutex(is->pictq_mutex);
1432         //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1433         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1434             is->pictq[i].target_clock= 0;
1435         }
1436         while (is->pictq_size && !is->videoq.abort_request) {
1437             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1438         }
1439         is->video_current_pos = -1;
1440         SDL_UnlockMutex(is->pictq_mutex);
1441
1442         is->frame_last_pts = AV_NOPTS_VALUE;
1443         is->frame_last_delay = 0;
1444         is->frame_timer = (double)av_gettime() / 1000000.0;
1445         is->skip_frames = 1;
1446         is->skip_frames_index = 0;
1447         return 0;
1448     }
1449
1450     avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1451
1452     if (got_picture) {
1453         if (decoder_reorder_pts == -1) {
1454             *pts = frame->best_effort_timestamp;
1455         } else if (decoder_reorder_pts) {
1456             *pts = frame->pkt_pts;
1457         } else {
1458             *pts = frame->pkt_dts;
1459         }
1460
1461         if (*pts == AV_NOPTS_VALUE) {
1462             *pts = 0;
1463         }
1464
1465         is->skip_frames_index += 1;
1466         if(is->skip_frames_index >= is->skip_frames){
1467             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1468             return 1;
1469         }
1470
1471     }
1472     return 0;
1473 }
1474
1475 #if CONFIG_AVFILTER
1476 typedef struct {
1477     VideoState *is;
1478     AVFrame *frame;
1479     int use_dr1;
1480 } FilterPriv;
1481
1482 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1483 {
1484     AVFilterContext *ctx = codec->opaque;
1485     AVFilterBufferRef  *ref;
1486     int perms = AV_PERM_WRITE;
1487     int i, w, h, stride[4];
1488     unsigned edge;
1489     int pixel_size;
1490
1491     av_assert0(codec->flags & CODEC_FLAG_EMU_EDGE);
1492
1493     if (codec->codec->capabilities & CODEC_CAP_NEG_LINESIZES)
1494         perms |= AV_PERM_NEG_LINESIZES;
1495
1496     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1497         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1498         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1499         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1500     }
1501     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1502
1503     w = codec->width;
1504     h = codec->height;
1505
1506     if(av_image_check_size(w, h, 0, codec))
1507         return -1;
1508
1509     avcodec_align_dimensions2(codec, &w, &h, stride);
1510     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1511     w += edge << 1;
1512     h += edge << 1;
1513
1514     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1515         return -1;
1516
1517     pixel_size = av_pix_fmt_descriptors[ref->format].comp[0].step_minus1+1;
1518     ref->video->w = codec->width;
1519     ref->video->h = codec->height;
1520     for(i = 0; i < 4; i ++) {
1521         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1522         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1523
1524         if (ref->data[i]) {
1525             ref->data[i]    += ((edge * pixel_size) >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1526         }
1527         pic->data[i]     = ref->data[i];
1528         pic->linesize[i] = ref->linesize[i];
1529     }
1530     pic->opaque = ref;
1531     pic->age    = INT_MAX;
1532     pic->type   = FF_BUFFER_TYPE_USER;
1533     pic->reordered_opaque = codec->reordered_opaque;
1534     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1535     else           pic->pkt_pts = AV_NOPTS_VALUE;
1536     return 0;
1537 }
1538
1539 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1540 {
1541     memset(pic->data, 0, sizeof(pic->data));
1542     avfilter_unref_buffer(pic->opaque);
1543 }
1544
1545 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1546 {
1547     AVFilterBufferRef *ref = pic->opaque;
1548
1549     if (pic->data[0] == NULL) {
1550         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1551         return codec->get_buffer(codec, pic);
1552     }
1553
1554     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1555         (codec->pix_fmt != ref->format)) {
1556         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1557         return -1;
1558     }
1559
1560     pic->reordered_opaque = codec->reordered_opaque;
1561     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1562     else           pic->pkt_pts = AV_NOPTS_VALUE;
1563     return 0;
1564 }
1565
1566 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1567 {
1568     FilterPriv *priv = ctx->priv;
1569     AVCodecContext *codec;
1570     if(!opaque) return -1;
1571
1572     priv->is = opaque;
1573     codec    = priv->is->video_st->codec;
1574     codec->opaque = ctx;
1575     if((codec->codec->capabilities & CODEC_CAP_DR1)
1576     ) {
1577         av_assert0(codec->flags & CODEC_FLAG_EMU_EDGE);
1578         priv->use_dr1 = 1;
1579         codec->get_buffer     = input_get_buffer;
1580         codec->release_buffer = input_release_buffer;
1581         codec->reget_buffer   = input_reget_buffer;
1582         codec->thread_safe_callbacks = 1;
1583     }
1584
1585     priv->frame = avcodec_alloc_frame();
1586
1587     return 0;
1588 }
1589
1590 static void input_uninit(AVFilterContext *ctx)
1591 {
1592     FilterPriv *priv = ctx->priv;
1593     av_free(priv->frame);
1594 }
1595
1596 static int input_request_frame(AVFilterLink *link)
1597 {
1598     FilterPriv *priv = link->src->priv;
1599     AVFilterBufferRef *picref;
1600     int64_t pts = 0;
1601     AVPacket pkt;
1602     int ret;
1603
1604     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1605         av_free_packet(&pkt);
1606     if (ret < 0)
1607         return -1;
1608
1609     if(priv->use_dr1 && priv->frame->opaque) {
1610         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1611     } else {
1612         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1613         av_image_copy(picref->data, picref->linesize,
1614                       priv->frame->data, priv->frame->linesize,
1615                       picref->format, link->w, link->h);
1616     }
1617     av_free_packet(&pkt);
1618
1619     avfilter_copy_frame_props(picref, priv->frame);
1620     picref->pts = pts;
1621
1622     avfilter_start_frame(link, picref);
1623     avfilter_draw_slice(link, 0, link->h, 1);
1624     avfilter_end_frame(link);
1625
1626     return 0;
1627 }
1628
1629 static int input_query_formats(AVFilterContext *ctx)
1630 {
1631     FilterPriv *priv = ctx->priv;
1632     enum PixelFormat pix_fmts[] = {
1633         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1634     };
1635
1636     avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
1637     return 0;
1638 }
1639
1640 static int input_config_props(AVFilterLink *link)
1641 {
1642     FilterPriv *priv  = link->src->priv;
1643     AVStream *s = priv->is->video_st;
1644
1645     link->w = s->codec->width;
1646     link->h = s->codec->height;
1647     link->sample_aspect_ratio = s->sample_aspect_ratio.num ?
1648         s->sample_aspect_ratio : s->codec->sample_aspect_ratio;
1649     link->time_base = s->time_base;
1650
1651     return 0;
1652 }
1653
1654 static AVFilter input_filter =
1655 {
1656     .name      = "ffplay_input",
1657
1658     .priv_size = sizeof(FilterPriv),
1659
1660     .init      = input_init,
1661     .uninit    = input_uninit,
1662
1663     .query_formats = input_query_formats,
1664
1665     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1666     .outputs   = (AVFilterPad[]) {{ .name = "default",
1667                                     .type = AVMEDIA_TYPE_VIDEO,
1668                                     .request_frame = input_request_frame,
1669                                     .config_props  = input_config_props, },
1670                                   { .name = NULL }},
1671 };
1672
1673 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1674 {
1675     char sws_flags_str[128];
1676     int ret;
1677     enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1678     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1679     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1680     graph->scale_sws_opts = av_strdup(sws_flags_str);
1681
1682     if ((ret = avfilter_graph_create_filter(&filt_src, &input_filter, "src",
1683                                             NULL, is, graph)) < 0)
1684         return ret;
1685     if ((ret = avfilter_graph_create_filter(&filt_out, avfilter_get_by_name("buffersink"), "out",
1686                                             NULL, pix_fmts, graph)) < 0)
1687         return ret;
1688
1689     if(vfilters) {
1690         AVFilterInOut *outputs = avfilter_inout_alloc();
1691         AVFilterInOut *inputs  = avfilter_inout_alloc();
1692
1693         outputs->name    = av_strdup("in");
1694         outputs->filter_ctx = filt_src;
1695         outputs->pad_idx = 0;
1696         outputs->next    = NULL;
1697
1698         inputs->name    = av_strdup("out");
1699         inputs->filter_ctx = filt_out;
1700         inputs->pad_idx = 0;
1701         inputs->next    = NULL;
1702
1703         if ((ret = avfilter_graph_parse(graph, vfilters, &inputs, &outputs, NULL)) < 0)
1704             return ret;
1705     } else {
1706         if ((ret = avfilter_link(filt_src, 0, filt_out, 0)) < 0)
1707             return ret;
1708     }
1709
1710     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1711         return ret;
1712
1713     is->out_video_filter = filt_out;
1714
1715     return ret;
1716 }
1717
1718 #endif  /* CONFIG_AVFILTER */
1719
1720 static int video_thread(void *arg)
1721 {
1722     VideoState *is = arg;
1723     AVFrame *frame= avcodec_alloc_frame();
1724     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1725     double pts;
1726     int ret;
1727
1728 #if CONFIG_AVFILTER
1729     AVFilterGraph *graph = avfilter_graph_alloc();
1730     AVFilterContext *filt_out = NULL;
1731     int last_w = is->video_st->codec->width;
1732     int last_h = is->video_st->codec->height;
1733
1734     if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1735         goto the_end;
1736     filt_out = is->out_video_filter;
1737 #endif
1738
1739     for(;;) {
1740 #if !CONFIG_AVFILTER
1741         AVPacket pkt;
1742 #else
1743         AVFilterBufferRef *picref;
1744         AVRational tb = filt_out->inputs[0]->time_base;
1745 #endif
1746         while (is->paused && !is->videoq.abort_request)
1747             SDL_Delay(10);
1748 #if CONFIG_AVFILTER
1749         if (   last_w != is->video_st->codec->width
1750             || last_h != is->video_st->codec->height) {
1751             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1752                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1753             avfilter_graph_free(&graph);
1754             graph = avfilter_graph_alloc();
1755             if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1756                 goto the_end;
1757             filt_out = is->out_video_filter;
1758             last_w = is->video_st->codec->width;
1759             last_h = is->video_st->codec->height;
1760         }
1761         ret = av_vsink_buffer_get_video_buffer_ref(filt_out, &picref, 0);
1762         if (picref) {
1763             avfilter_fill_frame_from_video_buffer_ref(frame, picref);
1764             pts_int = picref->pts;
1765             pos     = picref->pos;
1766             frame->opaque = picref;
1767         }
1768
1769         if (av_cmp_q(tb, is->video_st->time_base)) {
1770             av_unused int64_t pts1 = pts_int;
1771             pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1772             av_dlog(NULL, "video_thread(): "
1773                     "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1774                     tb.num, tb.den, pts1,
1775                     is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1776         }
1777 #else
1778         ret = get_video_frame(is, frame, &pts_int, &pkt);
1779         pos = pkt.pos;
1780         av_free_packet(&pkt);
1781 #endif
1782
1783         if (ret < 0) goto the_end;
1784
1785 #if CONFIG_AVFILTER
1786         if (!picref)
1787             continue;
1788 #endif
1789
1790         pts = pts_int*av_q2d(is->video_st->time_base);
1791
1792         ret = queue_picture(is, frame, pts, pos);
1793
1794         if (ret < 0)
1795             goto the_end;
1796
1797         if (cur_stream && cur_stream->step)
1798             stream_toggle_pause(cur_stream);
1799     }
1800  the_end:
1801 #if CONFIG_AVFILTER
1802     avfilter_graph_free(&graph);
1803 #endif
1804     av_free(frame);
1805     return 0;
1806 }
1807
1808 static int subtitle_thread(void *arg)
1809 {
1810     VideoState *is = arg;
1811     SubPicture *sp;
1812     AVPacket pkt1, *pkt = &pkt1;
1813     int got_subtitle;
1814     double pts;
1815     int i, j;
1816     int r, g, b, y, u, v, a;
1817
1818     for(;;) {
1819         while (is->paused && !is->subtitleq.abort_request) {
1820             SDL_Delay(10);
1821         }
1822         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1823             break;
1824
1825         if(pkt->data == flush_pkt.data){
1826             avcodec_flush_buffers(is->subtitle_st->codec);
1827             continue;
1828         }
1829         SDL_LockMutex(is->subpq_mutex);
1830         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1831                !is->subtitleq.abort_request) {
1832             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1833         }
1834         SDL_UnlockMutex(is->subpq_mutex);
1835
1836         if (is->subtitleq.abort_request)
1837             return 0;
1838
1839         sp = &is->subpq[is->subpq_windex];
1840
1841        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1842            this packet, if any */
1843         pts = 0;
1844         if (pkt->pts != AV_NOPTS_VALUE)
1845             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1846
1847         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1848                                  &got_subtitle, pkt);
1849
1850         if (got_subtitle && sp->sub.format == 0) {
1851             sp->pts = pts;
1852
1853             for (i = 0; i < sp->sub.num_rects; i++)
1854             {
1855                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1856                 {
1857                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1858                     y = RGB_TO_Y_CCIR(r, g, b);
1859                     u = RGB_TO_U_CCIR(r, g, b, 0);
1860                     v = RGB_TO_V_CCIR(r, g, b, 0);
1861                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1862                 }
1863             }
1864
1865             /* now we can update the picture count */
1866             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1867                 is->subpq_windex = 0;
1868             SDL_LockMutex(is->subpq_mutex);
1869             is->subpq_size++;
1870             SDL_UnlockMutex(is->subpq_mutex);
1871         }
1872         av_free_packet(pkt);
1873     }
1874     return 0;
1875 }
1876
1877 /* copy samples for viewing in editor window */
1878 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1879 {
1880     int size, len;
1881
1882     size = samples_size / sizeof(short);
1883     while (size > 0) {
1884         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1885         if (len > size)
1886             len = size;
1887         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1888         samples += len;
1889         is->sample_array_index += len;
1890         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1891             is->sample_array_index = 0;
1892         size -= len;
1893     }
1894 }
1895
1896 /* return the new audio buffer size (samples can be added or deleted
1897    to get better sync if video or external master clock) */
1898 static int synchronize_audio(VideoState *is, short *samples,
1899                              int samples_size1, double pts)
1900 {
1901     int n, samples_size;
1902     double ref_clock;
1903
1904     n = 2 * is->audio_st->codec->channels;
1905     samples_size = samples_size1;
1906
1907     /* if not master, then we try to remove or add samples to correct the clock */
1908     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1909          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1910         double diff, avg_diff;
1911         int wanted_size, min_size, max_size, nb_samples;
1912
1913         ref_clock = get_master_clock(is);
1914         diff = get_audio_clock(is) - ref_clock;
1915
1916         if (diff < AV_NOSYNC_THRESHOLD) {
1917             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1918             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1919                 /* not enough measures to have a correct estimate */
1920                 is->audio_diff_avg_count++;
1921             } else {
1922                 /* estimate the A-V difference */
1923                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1924
1925                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1926                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1927                     nb_samples = samples_size / n;
1928
1929                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1930                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1931                     if (wanted_size < min_size)
1932                         wanted_size = min_size;
1933                     else if (wanted_size > max_size)
1934                         wanted_size = max_size;
1935
1936                     /* add or remove samples to correction the synchro */
1937                     if (wanted_size < samples_size) {
1938                         /* remove samples */
1939                         samples_size = wanted_size;
1940                     } else if (wanted_size > samples_size) {
1941                         uint8_t *samples_end, *q;
1942                         int nb;
1943
1944                         /* add samples */
1945                         nb = (samples_size - wanted_size);
1946                         samples_end = (uint8_t *)samples + samples_size - n;
1947                         q = samples_end + n;
1948                         while (nb > 0) {
1949                             memcpy(q, samples_end, n);
1950                             q += n;
1951                             nb -= n;
1952                         }
1953                         samples_size = wanted_size;
1954                     }
1955                 }
1956 #if 0
1957                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1958                        diff, avg_diff, samples_size - samples_size1,
1959                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
1960 #endif
1961             }
1962         } else {
1963             /* too big difference : may be initial PTS errors, so
1964                reset A-V filter */
1965             is->audio_diff_avg_count = 0;
1966             is->audio_diff_cum = 0;
1967         }
1968     }
1969
1970     return samples_size;
1971 }
1972
1973 /* decode one audio frame and returns its uncompressed size */
1974 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1975 {
1976     AVPacket *pkt_temp = &is->audio_pkt_temp;
1977     AVPacket *pkt = &is->audio_pkt;
1978     AVCodecContext *dec= is->audio_st->codec;
1979     int n, len1, data_size;
1980     double pts;
1981
1982     for(;;) {
1983         /* NOTE: the audio packet can contain several frames */
1984         while (pkt_temp->size > 0) {
1985             data_size = sizeof(is->audio_buf1);
1986             len1 = avcodec_decode_audio3(dec,
1987                                         (int16_t *)is->audio_buf1, &data_size,
1988                                         pkt_temp);
1989             if (len1 < 0) {
1990                 /* if error, we skip the frame */
1991                 pkt_temp->size = 0;
1992                 break;
1993             }
1994
1995             pkt_temp->data += len1;
1996             pkt_temp->size -= len1;
1997             if (data_size <= 0)
1998                 continue;
1999
2000             if (dec->sample_fmt != is->audio_src_fmt) {
2001                 if (is->reformat_ctx)
2002                     av_audio_convert_free(is->reformat_ctx);
2003                 is->reformat_ctx= av_audio_convert_alloc(AV_SAMPLE_FMT_S16, 1,
2004                                                          dec->sample_fmt, 1, NULL, 0);
2005                 if (!is->reformat_ctx) {
2006                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2007                         av_get_sample_fmt_name(dec->sample_fmt),
2008                         av_get_sample_fmt_name(AV_SAMPLE_FMT_S16));
2009                         break;
2010                 }
2011                 is->audio_src_fmt= dec->sample_fmt;
2012             }
2013
2014             if (is->reformat_ctx) {
2015                 const void *ibuf[6]= {is->audio_buf1};
2016                 void *obuf[6]= {is->audio_buf2};
2017                 int istride[6]= {av_get_bytes_per_sample(dec->sample_fmt)};
2018                 int ostride[6]= {2};
2019                 int len= data_size/istride[0];
2020                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2021                     printf("av_audio_convert() failed\n");
2022                     break;
2023                 }
2024                 is->audio_buf= is->audio_buf2;
2025                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2026                           remove this legacy cruft */
2027                 data_size= len*2;
2028             }else{
2029                 is->audio_buf= is->audio_buf1;
2030             }
2031
2032             /* if no pts, then compute it */
2033             pts = is->audio_clock;
2034             *pts_ptr = pts;
2035             n = 2 * dec->channels;
2036             is->audio_clock += (double)data_size /
2037                 (double)(n * dec->sample_rate);
2038 #ifdef DEBUG
2039             {
2040                 static double last_clock;
2041                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2042                        is->audio_clock - last_clock,
2043                        is->audio_clock, pts);
2044                 last_clock = is->audio_clock;
2045             }
2046 #endif
2047             return data_size;
2048         }
2049
2050         /* free the current packet */
2051         if (pkt->data)
2052             av_free_packet(pkt);
2053
2054         if (is->paused || is->audioq.abort_request) {
2055             return -1;
2056         }
2057
2058         /* read next packet */
2059         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2060             return -1;
2061         if(pkt->data == flush_pkt.data){
2062             avcodec_flush_buffers(dec);
2063             continue;
2064         }
2065
2066         pkt_temp->data = pkt->data;
2067         pkt_temp->size = pkt->size;
2068
2069         /* if update the audio clock with the pts */
2070         if (pkt->pts != AV_NOPTS_VALUE) {
2071             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2072         }
2073     }
2074 }
2075
2076 /* prepare a new audio buffer */
2077 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2078 {
2079     VideoState *is = opaque;
2080     int audio_size, len1;
2081     int bytes_per_sec;
2082     double pts;
2083
2084     audio_callback_time = av_gettime();
2085
2086     while (len > 0) {
2087         if (is->audio_buf_index >= is->audio_buf_size) {
2088            audio_size = audio_decode_frame(is, &pts);
2089            if (audio_size < 0) {
2090                 /* if error, just output silence */
2091                is->audio_buf = is->audio_buf1;
2092                is->audio_buf_size = 1024;
2093                memset(is->audio_buf, 0, is->audio_buf_size);
2094            } else {
2095                if (is->show_mode != SHOW_MODE_VIDEO)
2096                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2097                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2098                                               pts);
2099                is->audio_buf_size = audio_size;
2100            }
2101            is->audio_buf_index = 0;
2102         }
2103         len1 = is->audio_buf_size - is->audio_buf_index;
2104         if (len1 > len)
2105             len1 = len;
2106         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2107         len -= len1;
2108         stream += len1;
2109         is->audio_buf_index += len1;
2110     }
2111     bytes_per_sec = is->audio_st->codec->sample_rate *
2112             2 * is->audio_st->codec->channels;
2113     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2114     /* Let's assume the audio driver that is used by SDL has two periods. */
2115     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2116     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2117 }
2118
2119 /* open a given stream. Return 0 if OK */
2120 static int stream_component_open(VideoState *is, int stream_index)
2121 {
2122     AVFormatContext *ic = is->ic;
2123     AVCodecContext *avctx;
2124     AVCodec *codec;
2125     SDL_AudioSpec wanted_spec, spec;
2126     AVDictionary *opts;
2127     AVDictionaryEntry *t = NULL;
2128
2129     if (stream_index < 0 || stream_index >= ic->nb_streams)
2130         return -1;
2131     avctx = ic->streams[stream_index]->codec;
2132
2133     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index]);
2134
2135     /* prepare audio output */
2136     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2137         if (avctx->channels > 0) {
2138             avctx->request_channels = FFMIN(2, avctx->channels);
2139         } else {
2140             avctx->request_channels = 2;
2141         }
2142     }
2143
2144     codec = avcodec_find_decoder(avctx->codec_id);
2145     if (!codec)
2146         return -1;
2147
2148     avctx->workaround_bugs = workaround_bugs;
2149     avctx->lowres = lowres;
2150     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2151     avctx->idct_algo= idct;
2152     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2153     avctx->skip_frame= skip_frame;
2154     avctx->skip_idct= skip_idct;
2155     avctx->skip_loop_filter= skip_loop_filter;
2156     avctx->error_recognition= error_recognition;
2157     avctx->error_concealment= error_concealment;
2158     avctx->thread_count= thread_count;
2159
2160     if(codec->capabilities & CODEC_CAP_DR1)
2161         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2162
2163     if (!codec ||
2164         avcodec_open2(avctx, codec, &opts) < 0)
2165         return -1;
2166     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2167         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2168         return AVERROR_OPTION_NOT_FOUND;
2169     }
2170
2171     /* prepare audio output */
2172     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2173         if(avctx->sample_rate <= 0 || avctx->channels <= 0){
2174             fprintf(stderr, "Invalid sample rate or channel count\n");
2175             return -1;
2176         }
2177         wanted_spec.freq = avctx->sample_rate;
2178         wanted_spec.format = AUDIO_S16SYS;
2179         wanted_spec.channels = avctx->channels;
2180         wanted_spec.silence = 0;
2181         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2182         wanted_spec.callback = sdl_audio_callback;
2183         wanted_spec.userdata = is;
2184         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2185             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2186             return -1;
2187         }
2188         is->audio_hw_buf_size = spec.size;
2189         is->audio_src_fmt= AV_SAMPLE_FMT_S16;
2190     }
2191
2192     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2193     switch(avctx->codec_type) {
2194     case AVMEDIA_TYPE_AUDIO:
2195         is->audio_stream = stream_index;
2196         is->audio_st = ic->streams[stream_index];
2197         is->audio_buf_size = 0;
2198         is->audio_buf_index = 0;
2199
2200         /* init averaging filter */
2201         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2202         is->audio_diff_avg_count = 0;
2203         /* since we do not have a precise anough audio fifo fullness,
2204            we correct audio sync only if larger than this threshold */
2205         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2206
2207         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2208         packet_queue_init(&is->audioq);
2209         SDL_PauseAudio(0);
2210         break;
2211     case AVMEDIA_TYPE_VIDEO:
2212         is->video_stream = stream_index;
2213         is->video_st = ic->streams[stream_index];
2214
2215         packet_queue_init(&is->videoq);
2216         is->video_tid = SDL_CreateThread(video_thread, is);
2217         break;
2218     case AVMEDIA_TYPE_SUBTITLE:
2219         is->subtitle_stream = stream_index;
2220         is->subtitle_st = ic->streams[stream_index];
2221         packet_queue_init(&is->subtitleq);
2222
2223         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2224         break;
2225     default:
2226         break;
2227     }
2228     return 0;
2229 }
2230
2231 static void stream_component_close(VideoState *is, int stream_index)
2232 {
2233     AVFormatContext *ic = is->ic;
2234     AVCodecContext *avctx;
2235
2236     if (stream_index < 0 || stream_index >= ic->nb_streams)
2237         return;
2238     avctx = ic->streams[stream_index]->codec;
2239
2240     switch(avctx->codec_type) {
2241     case AVMEDIA_TYPE_AUDIO:
2242         packet_queue_abort(&is->audioq);
2243
2244         SDL_CloseAudio();
2245
2246         packet_queue_end(&is->audioq);
2247         if (is->reformat_ctx)
2248             av_audio_convert_free(is->reformat_ctx);
2249         is->reformat_ctx = NULL;
2250         break;
2251     case AVMEDIA_TYPE_VIDEO:
2252         packet_queue_abort(&is->videoq);
2253
2254         /* note: we also signal this mutex to make sure we deblock the
2255            video thread in all cases */
2256         SDL_LockMutex(is->pictq_mutex);
2257         SDL_CondSignal(is->pictq_cond);
2258         SDL_UnlockMutex(is->pictq_mutex);
2259
2260         SDL_WaitThread(is->video_tid, NULL);
2261
2262         packet_queue_end(&is->videoq);
2263         break;
2264     case AVMEDIA_TYPE_SUBTITLE:
2265         packet_queue_abort(&is->subtitleq);
2266
2267         /* note: we also signal this mutex to make sure we deblock the
2268            video thread in all cases */
2269         SDL_LockMutex(is->subpq_mutex);
2270         is->subtitle_stream_changed = 1;
2271
2272         SDL_CondSignal(is->subpq_cond);
2273         SDL_UnlockMutex(is->subpq_mutex);
2274
2275         SDL_WaitThread(is->subtitle_tid, NULL);
2276
2277         packet_queue_end(&is->subtitleq);
2278         break;
2279     default:
2280         break;
2281     }
2282
2283     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2284     avcodec_close(avctx);
2285     switch(avctx->codec_type) {
2286     case AVMEDIA_TYPE_AUDIO:
2287         is->audio_st = NULL;
2288         is->audio_stream = -1;
2289         break;
2290     case AVMEDIA_TYPE_VIDEO:
2291         is->video_st = NULL;
2292         is->video_stream = -1;
2293         break;
2294     case AVMEDIA_TYPE_SUBTITLE:
2295         is->subtitle_st = NULL;
2296         is->subtitle_stream = -1;
2297         break;
2298     default:
2299         break;
2300     }
2301 }
2302
2303 /* since we have only one decoding thread, we can use a global
2304    variable instead of a thread local variable */
2305 static VideoState *global_video_state;
2306
2307 static int decode_interrupt_cb(void)
2308 {
2309     return (global_video_state && global_video_state->abort_request);
2310 }
2311
2312 /* this thread gets the stream from the disk or the network */
2313 static int read_thread(void *arg)
2314 {
2315     VideoState *is = arg;
2316     AVFormatContext *ic = NULL;
2317     int err, i, ret;
2318     int st_index[AVMEDIA_TYPE_NB];
2319     AVPacket pkt1, *pkt = &pkt1;
2320     int eof=0;
2321     int pkt_in_play_range = 0;
2322     AVDictionaryEntry *t;
2323     AVDictionary **opts;
2324     int orig_nb_streams;
2325
2326     memset(st_index, -1, sizeof(st_index));
2327     is->video_stream = -1;
2328     is->audio_stream = -1;
2329     is->subtitle_stream = -1;
2330
2331     global_video_state = is;
2332     avio_set_interrupt_cb(decode_interrupt_cb);
2333
2334     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2335     if (err < 0) {
2336         print_error(is->filename, err);
2337         ret = -1;
2338         goto fail;
2339     }
2340     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2341         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2342         ret = AVERROR_OPTION_NOT_FOUND;
2343         goto fail;
2344     }
2345     is->ic = ic;
2346
2347     if(genpts)
2348         ic->flags |= AVFMT_FLAG_GENPTS;
2349
2350     opts = setup_find_stream_info_opts(ic, codec_opts);
2351     orig_nb_streams = ic->nb_streams;
2352
2353     err = avformat_find_stream_info(ic, opts);
2354     if (err < 0) {
2355         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2356         ret = -1;
2357         goto fail;
2358     }
2359     for (i = 0; i < orig_nb_streams; i++)
2360         av_dict_free(&opts[i]);
2361     av_freep(&opts);
2362
2363     if(ic->pb)
2364         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2365
2366     if(seek_by_bytes<0)
2367         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2368
2369     /* if seeking requested, we execute it */
2370     if (start_time != AV_NOPTS_VALUE) {
2371         int64_t timestamp;
2372
2373         timestamp = start_time;
2374         /* add the stream start time */
2375         if (ic->start_time != AV_NOPTS_VALUE)
2376             timestamp += ic->start_time;
2377         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2378         if (ret < 0) {
2379             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2380                     is->filename, (double)timestamp / AV_TIME_BASE);
2381         }
2382     }
2383
2384     for (i = 0; i < ic->nb_streams; i++)
2385         ic->streams[i]->discard = AVDISCARD_ALL;
2386     if (!video_disable)
2387         st_index[AVMEDIA_TYPE_VIDEO] =
2388             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2389                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2390     if (!audio_disable)
2391         st_index[AVMEDIA_TYPE_AUDIO] =
2392             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2393                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2394                                 st_index[AVMEDIA_TYPE_VIDEO],
2395                                 NULL, 0);
2396     if (!video_disable)
2397         st_index[AVMEDIA_TYPE_SUBTITLE] =
2398             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2399                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2400                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2401                                  st_index[AVMEDIA_TYPE_AUDIO] :
2402                                  st_index[AVMEDIA_TYPE_VIDEO]),
2403                                 NULL, 0);
2404     if (show_status) {
2405         av_dump_format(ic, 0, is->filename, 0);
2406     }
2407
2408     is->show_mode = show_mode;
2409
2410     /* open the streams */
2411     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2412         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2413     }
2414
2415     ret=-1;
2416     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2417         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2418     }
2419     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2420     if (is->show_mode == SHOW_MODE_NONE)
2421         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2422
2423     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2424         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2425     }
2426
2427     if (is->video_stream < 0 && is->audio_stream < 0) {
2428         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2429         ret = -1;
2430         goto fail;
2431     }
2432
2433     for(;;) {
2434         if (is->abort_request)
2435             break;
2436         if (is->paused != is->last_paused) {
2437             is->last_paused = is->paused;
2438             if (is->paused)
2439                 is->read_pause_return= av_read_pause(ic);
2440             else
2441                 av_read_play(ic);
2442         }
2443 #if CONFIG_RTSP_DEMUXER
2444         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2445             /* wait 10 ms to avoid trying to get another packet */
2446             /* XXX: horrible */
2447             SDL_Delay(10);
2448             continue;
2449         }
2450 #endif
2451         if (is->seek_req) {
2452             int64_t seek_target= is->seek_pos;
2453             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2454             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2455 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2456 //      of the seek_pos/seek_rel variables
2457
2458             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2459             if (ret < 0) {
2460                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2461             }else{
2462                 if (is->audio_stream >= 0) {
2463                     packet_queue_flush(&is->audioq);
2464                     packet_queue_put(&is->audioq, &flush_pkt);
2465                 }
2466                 if (is->subtitle_stream >= 0) {
2467                     packet_queue_flush(&is->subtitleq);
2468                     packet_queue_put(&is->subtitleq, &flush_pkt);
2469                 }
2470                 if (is->video_stream >= 0) {
2471                     packet_queue_flush(&is->videoq);
2472                     packet_queue_put(&is->videoq, &flush_pkt);
2473                 }
2474             }
2475             is->seek_req = 0;
2476             eof= 0;
2477         }
2478
2479         /* if the queue are full, no need to read more */
2480         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2481             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2482                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2483                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2484             /* wait 10 ms */
2485             SDL_Delay(10);
2486             continue;
2487         }
2488         if(eof) {
2489             if(is->video_stream >= 0){
2490                 av_init_packet(pkt);
2491                 pkt->data=NULL;
2492                 pkt->size=0;
2493                 pkt->stream_index= is->video_stream;
2494                 packet_queue_put(&is->videoq, pkt);
2495             }
2496             SDL_Delay(10);
2497             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2498                 if(loop!=1 && (!loop || --loop)){
2499                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2500                 }else if(autoexit){
2501                     ret=AVERROR_EOF;
2502                     goto fail;
2503                 }
2504             }
2505             eof=0;
2506             continue;
2507         }
2508         ret = av_read_frame(ic, pkt);
2509         if (ret < 0) {
2510             if (ret == AVERROR_EOF || url_feof(ic->pb))
2511                 eof=1;
2512             if (ic->pb && ic->pb->error)
2513                 break;
2514             SDL_Delay(100); /* wait for user event */
2515             continue;
2516         }
2517         /* check if packet is in play range specified by user, then queue, otherwise discard */
2518         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2519                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2520                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2521                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2522                 <= ((double)duration/1000000);
2523         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2524             packet_queue_put(&is->audioq, pkt);
2525         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2526             packet_queue_put(&is->videoq, pkt);
2527         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2528             packet_queue_put(&is->subtitleq, pkt);
2529         } else {
2530             av_free_packet(pkt);
2531         }
2532     }
2533     /* wait until the end */
2534     while (!is->abort_request) {
2535         SDL_Delay(100);
2536     }
2537
2538     ret = 0;
2539  fail:
2540     /* disable interrupting */
2541     global_video_state = NULL;
2542
2543     /* close each stream */
2544     if (is->audio_stream >= 0)
2545         stream_component_close(is, is->audio_stream);
2546     if (is->video_stream >= 0)
2547         stream_component_close(is, is->video_stream);
2548     if (is->subtitle_stream >= 0)
2549         stream_component_close(is, is->subtitle_stream);
2550     if (is->ic) {
2551         av_close_input_file(is->ic);
2552         is->ic = NULL; /* safety */
2553     }
2554     avio_set_interrupt_cb(NULL);
2555
2556     if (ret != 0) {
2557         SDL_Event event;
2558
2559         event.type = FF_QUIT_EVENT;
2560         event.user.data1 = is;
2561         SDL_PushEvent(&event);
2562     }
2563     return 0;
2564 }
2565
2566 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2567 {
2568     VideoState *is;
2569
2570     is = av_mallocz(sizeof(VideoState));
2571     if (!is)
2572         return NULL;
2573     av_strlcpy(is->filename, filename, sizeof(is->filename));
2574     is->iformat = iformat;
2575     is->ytop = 0;
2576     is->xleft = 0;
2577
2578     /* start video display */
2579     is->pictq_mutex = SDL_CreateMutex();
2580     is->pictq_cond = SDL_CreateCond();
2581
2582     is->subpq_mutex = SDL_CreateMutex();
2583     is->subpq_cond = SDL_CreateCond();
2584
2585     is->av_sync_type = av_sync_type;
2586     is->read_tid = SDL_CreateThread(read_thread, is);
2587     if (!is->read_tid) {
2588         av_free(is);
2589         return NULL;
2590     }
2591     return is;
2592 }
2593
2594 static void stream_cycle_channel(VideoState *is, int codec_type)
2595 {
2596     AVFormatContext *ic = is->ic;
2597     int start_index, stream_index;
2598     AVStream *st;
2599
2600     if (codec_type == AVMEDIA_TYPE_VIDEO)
2601         start_index = is->video_stream;
2602     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2603         start_index = is->audio_stream;
2604     else
2605         start_index = is->subtitle_stream;
2606     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2607         return;
2608     stream_index = start_index;
2609     for(;;) {
2610         if (++stream_index >= is->ic->nb_streams)
2611         {
2612             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2613             {
2614                 stream_index = -1;
2615                 goto the_end;
2616             } else
2617                 stream_index = 0;
2618         }
2619         if (stream_index == start_index)
2620             return;
2621         st = ic->streams[stream_index];
2622         if (st->codec->codec_type == codec_type) {
2623             /* check that parameters are OK */
2624             switch(codec_type) {
2625             case AVMEDIA_TYPE_AUDIO:
2626                 if (st->codec->sample_rate != 0 &&
2627                     st->codec->channels != 0)
2628                     goto the_end;
2629                 break;
2630             case AVMEDIA_TYPE_VIDEO:
2631             case AVMEDIA_TYPE_SUBTITLE:
2632                 goto the_end;
2633             default:
2634                 break;
2635             }
2636         }
2637     }
2638  the_end:
2639     stream_component_close(is, start_index);
2640     stream_component_open(is, stream_index);
2641 }
2642
2643
2644 static void toggle_full_screen(void)
2645 {
2646     is_full_screen = !is_full_screen;
2647     video_open(cur_stream);
2648 }
2649
2650 static void toggle_pause(VideoState *is)
2651 {
2652     stream_toggle_pause(is);
2653     is->step = 0;
2654 }
2655
2656 static void step_to_next_frame(VideoState *is)
2657 {
2658     /* if the stream is paused unpause it, then step */
2659     if (is->paused)
2660         stream_toggle_pause(is);
2661     is->step = 1;
2662 }
2663
2664 static void toggle_audio_display(void)
2665 {
2666     if (cur_stream) {
2667         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2668         cur_stream->show_mode = (cur_stream->show_mode + 1) % SHOW_MODE_NB;
2669         fill_rectangle(screen,
2670                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2671                     bgcolor);
2672         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2673     }
2674 }
2675
2676 /* handle an event sent by the GUI */
2677 static void event_loop(void)
2678 {
2679     SDL_Event event;
2680     double incr, pos, frac;
2681
2682     for(;;) {
2683         double x;
2684         SDL_WaitEvent(&event);
2685         switch(event.type) {
2686         case SDL_KEYDOWN:
2687             if (exit_on_keydown) {
2688                 do_exit();
2689                 break;
2690             }
2691             switch(event.key.keysym.sym) {
2692             case SDLK_ESCAPE:
2693             case SDLK_q:
2694                 do_exit();
2695                 break;
2696             case SDLK_f:
2697                 toggle_full_screen();
2698                 break;
2699             case SDLK_p:
2700             case SDLK_SPACE:
2701                 if (cur_stream)
2702                     toggle_pause(cur_stream);
2703                 break;
2704             case SDLK_s: //S: Step to next frame
2705                 if (cur_stream)
2706                     step_to_next_frame(cur_stream);
2707                 break;
2708             case SDLK_a:
2709                 if (cur_stream)
2710                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2711                 break;
2712             case SDLK_v:
2713                 if (cur_stream)
2714                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2715                 break;
2716             case SDLK_t:
2717                 if (cur_stream)
2718                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2719                 break;
2720             case SDLK_w:
2721                 toggle_audio_display();
2722                 break;
2723             case SDLK_LEFT:
2724                 incr = -10.0;
2725                 goto do_seek;
2726             case SDLK_RIGHT:
2727                 incr = 10.0;
2728                 goto do_seek;
2729             case SDLK_UP:
2730                 incr = 60.0;
2731                 goto do_seek;
2732             case SDLK_DOWN:
2733                 incr = -60.0;
2734             do_seek:
2735                 if (cur_stream) {
2736                     if (seek_by_bytes) {
2737                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2738                             pos= cur_stream->video_current_pos;
2739                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2740                             pos= cur_stream->audio_pkt.pos;
2741                         }else
2742                             pos = avio_tell(cur_stream->ic->pb);
2743                         if (cur_stream->ic->bit_rate)
2744                             incr *= cur_stream->ic->bit_rate / 8.0;
2745                         else
2746                             incr *= 180000.0;
2747                         pos += incr;
2748                         stream_seek(cur_stream, pos, incr, 1);
2749                     } else {
2750                         pos = get_master_clock(cur_stream);
2751                         pos += incr;
2752                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2753                     }
2754                 }
2755                 break;
2756             default:
2757                 break;
2758             }
2759             break;
2760         case SDL_MOUSEBUTTONDOWN:
2761             if (exit_on_mousedown) {
2762                 do_exit();
2763                 break;
2764             }
2765         case SDL_MOUSEMOTION:
2766             if(event.type ==SDL_MOUSEBUTTONDOWN){
2767                 x= event.button.x;
2768             }else{
2769                 if(event.motion.state != SDL_PRESSED)
2770                     break;
2771                 x= event.motion.x;
2772             }
2773             if (cur_stream) {
2774                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2775                     uint64_t size=  avio_size(cur_stream->ic->pb);
2776                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2777                 }else{
2778                     int64_t ts;
2779                     int ns, hh, mm, ss;
2780                     int tns, thh, tmm, tss;
2781                     tns = cur_stream->ic->duration/1000000LL;
2782                     thh = tns/3600;
2783                     tmm = (tns%3600)/60;
2784                     tss = (tns%60);
2785                     frac = x/cur_stream->width;
2786                     ns = frac*tns;
2787                     hh = ns/3600;
2788                     mm = (ns%3600)/60;
2789                     ss = (ns%60);
2790                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2791                             hh, mm, ss, thh, tmm, tss);
2792                     ts = frac*cur_stream->ic->duration;
2793                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2794                         ts += cur_stream->ic->start_time;
2795                     stream_seek(cur_stream, ts, 0, 0);
2796                 }
2797             }
2798             break;
2799         case SDL_VIDEORESIZE:
2800             if (cur_stream) {
2801                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2802                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2803                 screen_width = cur_stream->width = event.resize.w;
2804                 screen_height= cur_stream->height= event.resize.h;
2805             }
2806             break;
2807         case SDL_QUIT:
2808         case FF_QUIT_EVENT:
2809             do_exit();
2810             break;
2811         case FF_ALLOC_EVENT:
2812             video_open(event.user.data1);
2813             alloc_picture(event.user.data1);
2814             break;
2815         case FF_REFRESH_EVENT:
2816             video_refresh(event.user.data1);
2817             cur_stream->refresh=0;
2818             break;
2819         default:
2820             break;
2821         }
2822     }
2823 }
2824
2825 static int opt_frame_size(const char *opt, const char *arg)
2826 {
2827     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2828     return opt_default("video_size", arg);
2829 }
2830
2831 static int opt_width(const char *opt, const char *arg)
2832 {
2833     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2834     return 0;
2835 }
2836
2837 static int opt_height(const char *opt, const char *arg)
2838 {
2839     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2840     return 0;
2841 }
2842
2843 static int opt_format(const char *opt, const char *arg)
2844 {
2845     file_iformat = av_find_input_format(arg);
2846     if (!file_iformat) {
2847         fprintf(stderr, "Unknown input format: %s\n", arg);
2848         return AVERROR(EINVAL);
2849     }
2850     return 0;
2851 }
2852
2853 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2854 {
2855     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2856     return opt_default("pixel_format", arg);
2857 }
2858
2859 static int opt_sync(const char *opt, const char *arg)
2860 {
2861     if (!strcmp(arg, "audio"))
2862         av_sync_type = AV_SYNC_AUDIO_MASTER;
2863     else if (!strcmp(arg, "video"))
2864         av_sync_type = AV_SYNC_VIDEO_MASTER;
2865     else if (!strcmp(arg, "ext"))
2866         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2867     else {
2868         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2869         exit(1);
2870     }
2871     return 0;
2872 }
2873
2874 static int opt_seek(const char *opt, const char *arg)
2875 {
2876     start_time = parse_time_or_die(opt, arg, 1);
2877     return 0;
2878 }
2879
2880 static int opt_duration(const char *opt, const char *arg)
2881 {
2882     duration = parse_time_or_die(opt, arg, 1);
2883     return 0;
2884 }
2885
2886 static int opt_thread_count(const char *opt, const char *arg)
2887 {
2888     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2889 #if !HAVE_THREADS
2890     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2891 #endif
2892     return 0;
2893 }
2894
2895 static int opt_show_mode(const char *opt, const char *arg)
2896 {
2897     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2898                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2899                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2900                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2901     return 0;
2902 }
2903
2904 static int opt_input_file(const char *opt, const char *filename)
2905 {
2906     if (input_filename) {
2907         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2908                 filename, input_filename);
2909         exit(1);
2910     }
2911     if (!strcmp(filename, "-"))
2912         filename = "pipe:";
2913     input_filename = filename;
2914     return 0;
2915 }
2916
2917 static const OptionDef options[] = {
2918 #include "cmdutils_common_opts.h"
2919     { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
2920     { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2921     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2922     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2923     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2924     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2925     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
2926     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
2927     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
2928     { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2929     { "t", HAS_ARG, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
2930     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
2931     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2932     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2933     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2934     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2935     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2936     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2937     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2938     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2939     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2940     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2941     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2942     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2943     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
2944     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
2945     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
2946     { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2947     { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2948     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
2949     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_keydown}, "exit on key down", "" },
2950     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_mousedown}, "exit on mouse down", "" },
2951     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
2952     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
2953     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
2954 #if CONFIG_AVFILTER
2955     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
2956 #endif
2957     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
2958     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
2959     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
2960     { "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
2961     { NULL, },
2962 };
2963
2964 static void show_usage(void)
2965 {
2966     printf("Simple media player\n");
2967     printf("usage: %s [options] input_file\n", program_name);
2968     printf("\n");
2969 }
2970
2971 static int opt_help(const char *opt, const char *arg)
2972 {
2973     av_log_set_callback(log_callback_help);
2974     show_usage();
2975     show_help_options(options, "Main options:\n",
2976                       OPT_EXPERT, 0);
2977     show_help_options(options, "\nAdvanced options:\n",
2978                       OPT_EXPERT, OPT_EXPERT);
2979     printf("\n");
2980     av_opt_show2(avcodec_opts[0], NULL,
2981                  AV_OPT_FLAG_DECODING_PARAM, 0);
2982     printf("\n");
2983     av_opt_show2(avformat_opts, NULL,
2984                  AV_OPT_FLAG_DECODING_PARAM, 0);
2985 #if !CONFIG_AVFILTER
2986     printf("\n");
2987     av_opt_show2(sws_opts, NULL,
2988                  AV_OPT_FLAG_ENCODING_PARAM, 0);
2989 #endif
2990     printf("\nWhile playing:\n"
2991            "q, ESC              quit\n"
2992            "f                   toggle full screen\n"
2993            "p, SPC              pause\n"
2994            "a                   cycle audio channel\n"
2995            "v                   cycle video channel\n"
2996            "t                   cycle subtitle channel\n"
2997            "w                   show audio waves\n"
2998            "s                   activate frame-step mode\n"
2999            "left/right          seek backward/forward 10 seconds\n"
3000            "down/up             seek backward/forward 1 minute\n"
3001            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3002            );
3003     return 0;
3004 }
3005
3006 /* Called from the main */
3007 int main(int argc, char **argv)
3008 {
3009     int flags;
3010
3011     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3012
3013     /* register all codecs, demux and protocols */
3014     avcodec_register_all();
3015 #if CONFIG_AVDEVICE
3016     avdevice_register_all();
3017 #endif
3018 #if CONFIG_AVFILTER
3019     avfilter_register_all();
3020 #endif
3021     av_register_all();
3022
3023     init_opts();
3024
3025     show_banner();
3026
3027     parse_options(argc, argv, options, opt_input_file);
3028
3029     if (!input_filename) {
3030         show_usage();
3031         fprintf(stderr, "An input file must be specified\n");
3032         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3033         exit(1);
3034     }
3035
3036     if (display_disable) {
3037         video_disable = 1;
3038     }
3039     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3040     if (audio_disable)
3041         flags &= ~SDL_INIT_AUDIO;
3042 #if !defined(__MINGW32__) && !defined(__APPLE__)
3043     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3044 #endif
3045     if (SDL_Init (flags)) {
3046         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3047         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3048         exit(1);
3049     }
3050
3051     if (!display_disable) {
3052 #if HAVE_SDL_VIDEO_SIZE
3053         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3054         fs_screen_width = vi->current_w;
3055         fs_screen_height = vi->current_h;
3056 #endif
3057     }
3058
3059     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3060     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3061     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3062
3063     av_init_packet(&flush_pkt);
3064     flush_pkt.data= "FLUSH";
3065
3066     cur_stream = stream_open(input_filename, file_iformat);
3067
3068     event_loop();
3069
3070     /* never returns */
3071
3072     return 0;
3073 }