ffplay.c

   1 /*
   2  * FFplay : Simple Media Player based on the ffmpeg libraries
   3  * Copyright (c) 2003 Fabrice Bellard
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 #define HAVE_AV_CONFIG_H
  20 #include "avformat.h"
  21
  22 #include "cmdutils.h"
  23
  24 #include <SDL.h>
  25 #include <SDL_thread.h>
  26
  27 #ifdef CONFIG_WIN32
  28 #undef main /* We don't want SDL to override our main() */
  29 #endif
  30
  31 #if defined(__linux__)
  32 #define HAVE_X11
  33 #endif
  34
  35 #ifdef HAVE_X11
  36 #include <X11/Xlib.h>
  37 #endif
  38
  39 //#define DEBUG_SYNC
  40
  41 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
  42 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
  43
  44 /* SDL audio buffer size, in samples. Should be small to have precise
  45    A/V sync as SDL does not have hardware buffer fullness info. */
  46 #define SDL_AUDIO_BUFFER_SIZE 1024
  47
  48 /* no AV sync correction is done if below the AV sync threshold */
  49 #define AV_SYNC_THRESHOLD 0.08
  50 /* no AV correction is done if too big error */
  51 #define AV_NOSYNC_THRESHOLD 10.0
  52
  53 /* maximum audio speed change to get correct sync */
  54 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  55
  56 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  57 #define AUDIO_DIFF_AVG_NB   20
  58
  59 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
  60 #define SAMPLE_ARRAY_SIZE (2*65536)
  61
  62 typedef struct PacketQueue {
  63     AVPacketList *first_pkt, *last_pkt;
  64     int nb_packets;
  65     int size;
  66     int abort_request;
  67     SDL_mutex *mutex;
  68     SDL_cond *cond;
  69 } PacketQueue;
  70
  71 #define VIDEO_PICTURE_QUEUE_SIZE 1
  72
  73 typedef struct VideoPicture {
  74     double pts; /* presentation time stamp for this picture */
  75     SDL_Overlay *bmp;
  76     int width, height; /* source height & width */
  77     int allocated;
  78 } VideoPicture;
  79
  80 enum {
  81     AV_SYNC_AUDIO_MASTER, /* default choice */
  82     AV_SYNC_VIDEO_MASTER,
  83     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
  84 };
  85
  86 typedef struct VideoState {
  87     SDL_Thread *parse_tid;
  88     SDL_Thread *video_tid;
  89     AVInputFormat *iformat;
  90     int no_background;
  91     int abort_request;
  92     int paused;
  93     int last_paused;
  94     AVFormatContext *ic;
  95     int dtg_active_format;
  96
  97     int audio_stream;
  98
  99     int av_sync_type;
 100     double external_clock; /* external clock base */
 101     int64_t external_clock_time;
 102
 103     double audio_clock;
 104     double audio_diff_cum; /* used for AV difference average computation */
 105     double audio_diff_avg_coef;
 106     double audio_diff_threshold;
 107     int audio_diff_avg_count;
 108     AVStream *audio_st;
 109     PacketQueue audioq;
 110     int audio_hw_buf_size;
 111     /* samples output by the codec. we reserve more space for avsync
 112        compensation */
 113     uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
 114     int audio_buf_size; /* in bytes */
 115     int audio_buf_index; /* in bytes */
 116     AVPacket audio_pkt;
 117     uint8_t *audio_pkt_data;
 118     int audio_pkt_size;
 119     int64_t audio_pkt_ipts;
 120
 121     int show_audio; /* if true, display audio samples */
 122     int16_t sample_array[SAMPLE_ARRAY_SIZE];
 123     int sample_array_index;
 124     int last_i_start;
 125
 126     double frame_timer;
 127     double frame_last_pts;
 128     double frame_last_delay;
 129     double video_clock;
 130     int video_stream;
 131     AVStream *video_st;
 132     PacketQueue videoq;
 133     int64_t ipts;
 134     int picture_start; /* true if picture starts */
 135     double video_last_P_pts; /* pts of the last P picture (needed if B
 136                                 frames are present) */
 137     double video_current_pts; /* current displayed pts (different from
 138                                  video_clock if frame fifos are used) */
 139     int64_t video_current_pts_time; /* time at which we updated
 140                                        video_current_pts - used to
 141                                        have running video pts */
 142     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
 143     int pictq_size, pictq_rindex, pictq_windex;
 144     SDL_mutex *pictq_mutex;
 145     SDL_cond *pictq_cond;
 146
 147     //    QETimer *video_timer;
 148     char filename[1024];
 149     int width, height, xleft, ytop;
 150 } VideoState;
 151
 152 void show_help(void);
 153 static int audio_write_get_buf_size(VideoState *is);
 154
 155 /* options specified by the user */
 156 static AVInputFormat *file_iformat;
 157 static AVImageFormat *image_format;
 158 static const char *input_filename;
 159 static int fs_screen_width;
 160 static int fs_screen_height;
 161 static int screen_width = 640;
 162 static int screen_height = 480;
 163 static int audio_disable;
 164 static int video_disable;
 165 static int display_disable;
 166 static int show_status;
 167 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 168
 169 /* current context */
 170 static int is_full_screen;
 171 static VideoState *cur_stream;
 172 static int64_t audio_callback_time;
 173
 174 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 175 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
 176 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 177
 178 SDL_Surface *screen;
 179
 180 /* packet queue handling */
 181 static void packet_queue_init(PacketQueue *q)
 182 {
 183     memset(q, 0, sizeof(PacketQueue));
 184     q->mutex = SDL_CreateMutex();
 185     q->cond = SDL_CreateCond();
 186 }
 187
 188 static void packet_queue_end(PacketQueue *q)
 189 {
 190     AVPacketList *pkt, *pkt1;
 191
 192     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 193         pkt1 = pkt->next;
 194         av_free_packet(&pkt->pkt);
 195     }
 196     SDL_DestroyMutex(q->mutex);
 197     SDL_DestroyCond(q->cond);
 198 }
 199
 200 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 201 {
 202     AVPacketList *pkt1;
 203
 204     pkt1 = av_malloc(sizeof(AVPacketList));
 205     if (!pkt1)
 206         return -1;
 207     pkt1->pkt = *pkt;
 208     pkt1->next = NULL;
 209
 210     SDL_LockMutex(q->mutex);
 211
 212     if (!q->last_pkt)
 213
 214         q->first_pkt = pkt1;
 215     else
 216         q->last_pkt->next = pkt1;
 217     q->last_pkt = pkt1;
 218     q->nb_packets++;
 219     q->size += pkt1->pkt.size;
 220     /* XXX: should duplicate packet data in DV case */
 221     SDL_CondSignal(q->cond);
 222
 223     SDL_UnlockMutex(q->mutex);
 224     return 0;
 225 }
 226
 227 static void packet_queue_abort(PacketQueue *q)
 228 {
 229     SDL_LockMutex(q->mutex);
 230
 231     q->abort_request = 1;
 232
 233     SDL_CondSignal(q->cond);
 234
 235     SDL_UnlockMutex(q->mutex);
 236 }
 237
 238 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 239 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
 240 {
 241     AVPacketList *pkt1;
 242     int ret;
 243
 244     SDL_LockMutex(q->mutex);
 245
 246     for(;;) {
 247         if (q->abort_request) {
 248             ret = -1;
 249             break;
 250         }
 251
 252         pkt1 = q->first_pkt;
 253         if (pkt1) {
 254             q->first_pkt = pkt1->next;
 255             if (!q->first_pkt)
 256                 q->last_pkt = NULL;
 257             q->nb_packets--;
 258             q->size -= pkt1->pkt.size;
 259             *pkt = pkt1->pkt;
 260             av_free(pkt1);
 261             ret = 1;
 262             break;
 263         } else if (!block) {
 264             ret = 0;
 265             break;
 266         } else {
 267             SDL_CondWait(q->cond, q->mutex);
 268         }
 269     }
 270     SDL_UnlockMutex(q->mutex);
 271     return ret;
 272 }
 273
 274 static inline void fill_rectangle(SDL_Surface *screen,
 275                                   int x, int y, int w, int h, int color)
 276 {
 277     SDL_Rect rect;
 278     rect.x = x;
 279     rect.y = y;
 280     rect.w = w;
 281     rect.h = h;
 282     SDL_FillRect(screen, &rect, color);
 283 }
 284
 285 #if 0
 286 /* draw only the border of a rectangle */
 287 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
 288 {
 289     int w1, w2, h1, h2;
 290
 291     /* fill the background */
 292     w1 = x;
 293     if (w1 < 0)
 294         w1 = 0;
 295     w2 = s->width - (x + w);
 296     if (w2 < 0)
 297         w2 = 0;
 298     h1 = y;
 299     if (h1 < 0)
 300         h1 = 0;
 301     h2 = s->height - (y + h);
 302     if (h2 < 0)
 303         h2 = 0;
 304     fill_rectangle(screen,
 305                    s->xleft, s->ytop,
 306                    w1, s->height,
 307                    color);
 308     fill_rectangle(screen,
 309                    s->xleft + s->width - w2, s->ytop,
 310                    w2, s->height,
 311                    color);
 312     fill_rectangle(screen,
 313                    s->xleft + w1, s->ytop,
 314                    s->width - w1 - w2, h1,
 315                    color);
 316     fill_rectangle(screen,
 317                    s->xleft + w1, s->ytop + s->height - h2,
 318                    s->width - w1 - w2, h2,
 319                    color);
 320 }
 321 #endif
 322
 323 static void video_image_display(VideoState *is)
 324 {
 325     VideoPicture *vp;
 326     float aspect_ratio;
 327     int width, height, x, y;
 328     SDL_Rect rect;
 329
 330     vp = &is->pictq[is->pictq_rindex];
 331     if (vp->bmp) {
 332         /* XXX: use variable in the frame */
 333         aspect_ratio = is->video_st->codec.aspect_ratio;
 334         if (aspect_ratio <= 0.0)
 335             aspect_ratio = (float)is->video_st->codec.width /
 336                 (float)is->video_st->codec.height;
 337         /* if an active format is indicated, then it overrides the
 338            mpeg format */
 339 #if 0
 340         if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
 341             is->dtg_active_format = is->video_st->codec.dtg_active_format;
 342             printf("dtg_active_format=%d\n", is->dtg_active_format);
 343         }
 344 #endif
 345 #if 0
 346         switch(is->video_st->codec.dtg_active_format) {
 347         case FF_DTG_AFD_SAME:
 348         default:
 349             /* nothing to do */
 350             break;
 351         case FF_DTG_AFD_4_3:
 352             aspect_ratio = 4.0 / 3.0;
 353             break;
 354         case FF_DTG_AFD_16_9:
 355             aspect_ratio = 16.0 / 9.0;
 356             break;
 357         case FF_DTG_AFD_14_9:
 358             aspect_ratio = 14.0 / 9.0;
 359             break;
 360         case FF_DTG_AFD_4_3_SP_14_9:
 361             aspect_ratio = 14.0 / 9.0;
 362             break;
 363         case FF_DTG_AFD_16_9_SP_14_9:
 364             aspect_ratio = 14.0 / 9.0;
 365             break;
 366         case FF_DTG_AFD_SP_4_3:
 367             aspect_ratio = 4.0 / 3.0;
 368             break;
 369         }
 370 #endif
 371
 372         /* XXX: we suppose the screen has a 1.0 pixel ratio */
 373         height = is->height;
 374         width = ((int)rint(height * aspect_ratio)) & -3;
 375         if (width > is->width) {
 376             width = is->width;
 377             height = ((int)rint(width / aspect_ratio)) & -3;
 378         }
 379         x = (is->width - width) / 2;
 380         y = (is->height - height) / 2;
 381         if (!is->no_background) {
 382             /* fill the background */
 383             //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
 384         } else {
 385             is->no_background = 0;
 386         }
 387         rect.x = is->xleft + x;
 388         rect.y = is->xleft + y;
 389         rect.w = width;
 390         rect.h = height;
 391         SDL_DisplayYUVOverlay(vp->bmp, &rect);
 392     } else {
 393 #if 0
 394         fill_rectangle(screen,
 395                        is->xleft, is->ytop, is->width, is->height,
 396                        QERGB(0x00, 0x00, 0x00));
 397 #endif
 398     }
 399 }
 400
 401 static inline int compute_mod(int a, int b)
 402 {
 403     a = a % b;
 404     if (a >= 0)
 405         return a;
 406     else
 407         return a + b;
 408 }
 409
 410 static void video_audio_display(VideoState *s)
 411 {
 412     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 413     int ch, channels, h, h2, bgcolor, fgcolor;
 414     int16_t time_diff;
 415
 416     /* compute display index : center on currently output samples */
 417     channels = s->audio_st->codec.channels;
 418     nb_display_channels = channels;
 419     if (!s->paused) {
 420         n = 2 * channels;
 421         delay = audio_write_get_buf_size(s);
 422         delay /= n;
 423
 424         /* to be more precise, we take into account the time spent since
 425            the last buffer computation */
 426         if (audio_callback_time) {
 427             time_diff = av_gettime() - audio_callback_time;
 428             delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
 429         }
 430
 431         delay -= s->width / 2;
 432         if (delay < s->width)
 433             delay = s->width;
 434         i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 435         s->last_i_start = i_start;
 436     } else {
 437         i_start = s->last_i_start;
 438     }
 439
 440     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 441     fill_rectangle(screen,
 442                    s->xleft, s->ytop, s->width, s->height,
 443                    bgcolor);
 444
 445     fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 446
 447     /* total height for one channel */
 448     h = s->height / nb_display_channels;
 449     /* graph height / 2 */
 450     h2 = (h * 9) / 20;
 451     for(ch = 0;ch < nb_display_channels; ch++) {
 452         i = i_start + ch;
 453         y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 454         for(x = 0; x < s->width; x++) {
 455             y = (s->sample_array[i] * h2) >> 15;
 456             if (y < 0) {
 457                 y = -y;
 458                 ys = y1 - y;
 459             } else {
 460                 ys = y1;
 461             }
 462             fill_rectangle(screen,
 463                            s->xleft + x, ys, 1, y,
 464                            fgcolor);
 465             i += channels;
 466             if (i >= SAMPLE_ARRAY_SIZE)
 467                 i -= SAMPLE_ARRAY_SIZE;
 468         }
 469     }
 470
 471     fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 472
 473     for(ch = 1;ch < nb_display_channels; ch++) {
 474         y = s->ytop + ch * h;
 475         fill_rectangle(screen,
 476                        s->xleft, y, s->width, 1,
 477                        fgcolor);
 478     }
 479     SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 480 }
 481
 482 /* display the current picture, if any */
 483 static void video_display(VideoState *is)
 484 {
 485     if (is->audio_st && is->show_audio)
 486         video_audio_display(is);
 487     else if (is->video_st)
 488         video_image_display(is);
 489 }
 490
 491 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
 492 {
 493     SDL_Event event;
 494     event.type = FF_REFRESH_EVENT;
 495     event.user.data1 = opaque;
 496     SDL_PushEvent(&event);
 497     return 0; /* 0 means stop timer */
 498 }
 499
 500 /* schedule a video refresh in 'delay' ms */
 501 static void schedule_refresh(VideoState *is, int delay)
 502 {
 503     SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
 504 }
 505
 506 /* get the current audio clock value */
 507 static double get_audio_clock(VideoState *is)
 508 {
 509     double pts;
 510     int hw_buf_size, bytes_per_sec;
 511     pts = is->audio_clock;
 512     hw_buf_size = audio_write_get_buf_size(is);
 513     bytes_per_sec = 0;
 514     if (is->audio_st) {
 515         bytes_per_sec = is->audio_st->codec.sample_rate *
 516             2 * is->audio_st->codec.channels;
 517     }
 518     if (bytes_per_sec)
 519         pts -= (double)hw_buf_size / bytes_per_sec;
 520     return pts;
 521 }
 522
 523 /* get the current video clock value */
 524 static double get_video_clock(VideoState *is)
 525 {
 526     double delta;
 527     delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
 528     return is->video_current_pts + delta;
 529 }
 530
 531 /* get the current external clock value */
 532 static double get_external_clock(VideoState *is)
 533 {
 534     int64_t ti;
 535     ti = av_gettime();
 536     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
 537 }
 538
 539 /* get the current master clock value */
 540 static double get_master_clock(VideoState *is)
 541 {
 542     double val;
 543
 544     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st)
 545         val = get_video_clock(is);
 546     else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st)
 547         val = get_audio_clock(is);
 548     else
 549         val = get_external_clock(is);
 550     return val;
 551 }
 552
 553 /* called to display each frame */
 554 static void video_refresh_timer(void *opaque)
 555 {
 556     VideoState *is = opaque;
 557     VideoPicture *vp;
 558     double actual_delay, delay, sync_threshold, ref_clock, diff;
 559
 560
 561     if (is->video_st) {
 562         if (is->pictq_size == 0) {
 563             /* if no picture, need to wait */
 564             schedule_refresh(is, 40);
 565         } else {
 566             /* dequeue the picture */
 567             vp = &is->pictq[is->pictq_rindex];
 568
 569             /* update current video pts */
 570             is->video_current_pts = vp->pts;
 571             is->video_current_pts_time = av_gettime();
 572
 573             /* compute nominal delay */
 574             delay = vp->pts - is->frame_last_pts;
 575             if (delay <= 0 || delay >= 1.0) {
 576                 /* if incorrect delay, use previous one */
 577                 delay = is->frame_last_delay;
 578             }
 579             is->frame_last_delay = delay;
 580             is->frame_last_pts = vp->pts;
 581
 582             /* update delay to follow master synchronisation source */
 583             if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
 584                  is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
 585                 /* if video is slave, we try to correct big delays by
 586                    duplicating or deleting a frame */
 587                 ref_clock = get_master_clock(is);
 588                 diff = vp->pts - ref_clock;
 589
 590                 /* skip or repeat frame. We take into account the
 591                    delay to compute the threshold. I still don't know
 592                    if it is the best guess */
 593                 sync_threshold = AV_SYNC_THRESHOLD;
 594                 if (delay > sync_threshold)
 595                     sync_threshold = delay;
 596                 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
 597                     if (diff <= -sync_threshold)
 598                         delay = 0;
 599                     else if (diff >= sync_threshold)
 600                         delay = 2 * delay;
 601                 }
 602             }
 603
 604             is->frame_timer += delay;
 605             /* compute the REAL delay (we need to do that to avoid
 606                long term errors */
 607             actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
 608             if (actual_delay < 0.010) {
 609                 /* XXX: should skip picture */
 610                 actual_delay = 0.010;
 611             }
 612             /* launch timer for next picture */
 613             schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
 614
 615 #if defined(DEBUG_SYNC)
 616             printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
 617                    delay, actual_delay, vp->pts, -diff);
 618 #endif
 619
 620             /* display picture */
 621             video_display(is);
 622
 623             /* update queue size and signal for next picture */
 624             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
 625                 is->pictq_rindex = 0;
 626
 627             SDL_LockMutex(is->pictq_mutex);
 628             is->pictq_size--;
 629             SDL_CondSignal(is->pictq_cond);
 630             SDL_UnlockMutex(is->pictq_mutex);
 631         }
 632     } else if (is->audio_st) {
 633         /* draw the next audio frame */
 634
 635         schedule_refresh(is, 40);
 636
 637         /* if only audio stream, then display the audio bars (better
 638            than nothing, just to test the implementation */
 639
 640         /* display picture */
 641         video_display(is);
 642     } else {
 643         schedule_refresh(is, 100);
 644     }
 645     if (show_status) {
 646         static int64_t last_time;
 647         int64_t cur_time;
 648         int aqsize, vqsize;
 649         double av_diff;
 650
 651         cur_time = av_gettime();
 652         if (!last_time || (cur_time - last_time) >= 500 * 1000) {
 653             aqsize = 0;
 654             vqsize = 0;
 655             if (is->audio_st)
 656                 aqsize = is->audioq.size;
 657             if (is->video_st)
 658                 vqsize = is->videoq.size;
 659             av_diff = 0;
 660             if (is->audio_st && is->video_st)
 661                 av_diff = get_audio_clock(is) - get_video_clock(is);
 662             printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB    \r",
 663                    get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
 664             fflush(stdout);
 665             last_time = cur_time;
 666         }
 667     }
 668 }
 669
 670 /* allocate a picture (needs to do that in main thread to avoid
 671    potential locking problems */
 672 static void alloc_picture(void *opaque)
 673 {
 674     VideoState *is = opaque;
 675     VideoPicture *vp;
 676
 677     vp = &is->pictq[is->pictq_windex];
 678
 679     if (vp->bmp)
 680         SDL_FreeYUVOverlay(vp->bmp);
 681
 682 #if 0
 683     /* XXX: use generic function */
 684     /* XXX: disable overlay if no hardware acceleration or if RGB format */
 685     switch(is->video_st->codec.pix_fmt) {
 686     case PIX_FMT_YUV420P:
 687     case PIX_FMT_YUV422P:
 688     case PIX_FMT_YUV444P:
 689     case PIX_FMT_YUV422:
 690     case PIX_FMT_YUV410P:
 691     case PIX_FMT_YUV411P:
 692         is_yuv = 1;
 693         break;
 694     default:
 695         is_yuv = 0;
 696         break;
 697     }
 698 #endif
 699     vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
 700                                    is->video_st->codec.height,
 701                                    SDL_YV12_OVERLAY,
 702                                    screen);
 703     vp->width = is->video_st->codec.width;
 704     vp->height = is->video_st->codec.height;
 705
 706     SDL_LockMutex(is->pictq_mutex);
 707     vp->allocated = 1;
 708     SDL_CondSignal(is->pictq_cond);
 709     SDL_UnlockMutex(is->pictq_mutex);
 710 }
 711
 712 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
 713 {
 714     VideoPicture *vp;
 715     int dst_pix_fmt;
 716     AVPicture pict;
 717
 718     /* wait until we have space to put a new picture */
 719     SDL_LockMutex(is->pictq_mutex);
 720     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
 721            !is->videoq.abort_request) {
 722         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 723     }
 724     SDL_UnlockMutex(is->pictq_mutex);
 725
 726     if (is->videoq.abort_request)
 727         return -1;
 728
 729     vp = &is->pictq[is->pictq_windex];
 730
 731     /* alloc or resize hardware picture buffer */
 732     if (!vp->bmp ||
 733         vp->width != is->video_st->codec.width ||
 734         vp->height != is->video_st->codec.height) {
 735         SDL_Event event;
 736
 737         vp->allocated = 0;
 738
 739         /* the allocation must be done in the main thread to avoid
 740            locking problems */
 741         event.type = FF_ALLOC_EVENT;
 742         event.user.data1 = is;
 743         SDL_PushEvent(&event);
 744
 745         /* wait until the picture is allocated */
 746         SDL_LockMutex(is->pictq_mutex);
 747         while (!vp->allocated && !is->videoq.abort_request) {
 748             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
 749         }
 750         SDL_UnlockMutex(is->pictq_mutex);
 751
 752         if (is->videoq.abort_request)
 753             return -1;
 754     }
 755
 756     /* if the frame is not skipped, then display it */
 757     if (vp->bmp) {
 758         /* get a pointer on the bitmap */
 759         SDL_LockYUVOverlay (vp->bmp);
 760
 761         dst_pix_fmt = PIX_FMT_YUV420P;
 762         pict.data[0] = vp->bmp->pixels[0];
 763         pict.data[1] = vp->bmp->pixels[2];
 764         pict.data[2] = vp->bmp->pixels[1];
 765
 766         pict.linesize[0] = vp->bmp->pitches[0];
 767         pict.linesize[1] = vp->bmp->pitches[2];
 768         pict.linesize[2] = vp->bmp->pitches[1];
 769
 770         img_convert(&pict, dst_pix_fmt,
 771                     (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
 772                     is->video_st->codec.width, is->video_st->codec.height);
 773         /* update the bitmap content */
 774         SDL_UnlockYUVOverlay(vp->bmp);
 775
 776         vp->pts = pts;
 777
 778         /* now we can update the picture count */
 779         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
 780             is->pictq_windex = 0;
 781         SDL_LockMutex(is->pictq_mutex);
 782         is->pictq_size++;
 783         SDL_UnlockMutex(is->pictq_mutex);
 784     }
 785     return 0;
 786 }
 787
 788 /* compute the exact PTS for the picture if it is omitted in the stream */
 789 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
 790 {
 791     double frame_delay, pts;
 792
 793     pts = pts1;
 794
 795     /* if B frames are present, and if the current picture is a I
 796        or P frame, we use the last pts */
 797     if (is->video_st->codec.has_b_frames &&
 798         src_frame->pict_type != FF_B_TYPE) {
 799         /* use last pts */
 800         pts = is->video_last_P_pts;
 801         /* get the pts for the next I or P frame if present */
 802         is->video_last_P_pts = pts1;
 803     }
 804
 805     if (pts != 0) {
 806         /* update video clock with pts, if present */
 807         is->video_clock = pts;
 808     } else {
 809         frame_delay = (double)is->video_st->codec.frame_rate_base /
 810             (double)is->video_st->codec.frame_rate;
 811         is->video_clock += frame_delay;
 812         /* for MPEG2, the frame can be repeated, so we update the
 813            clock accordingly */
 814         if (src_frame->repeat_pict) {
 815             is->video_clock += src_frame->repeat_pict * (frame_delay * 0.5);
 816         }
 817     }
 818
 819 #if defined(DEBUG_SYNC) && 0
 820     {
 821         int ftype;
 822         if (src_frame->pict_type == FF_B_TYPE)
 823             ftype = 'B';
 824         else if (src_frame->pict_type == FF_I_TYPE)
 825             ftype = 'I';
 826         else
 827             ftype = 'P';
 828         printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
 829                ftype, is->video_clock, pts1);
 830     }
 831 #endif
 832     return queue_picture(is, src_frame, is->video_clock);
 833 }
 834
 835 static int video_thread(void *arg)
 836 {
 837     VideoState *is = arg;
 838     AVPacket pkt1, *pkt = &pkt1;
 839     unsigned char *ptr;
 840     int len, len1, got_picture;
 841     AVFrame *frame= avcodec_alloc_frame();
 842     int64_t ipts;
 843     double pts;
 844
 845     for(;;) {
 846         while (is->paused && !is->videoq.abort_request) {
 847             SDL_Delay(10);
 848         }
 849         if (packet_queue_get(&is->videoq, pkt, 1) < 0)
 850             break;
 851         /* NOTE: ipts is the PTS of the _first_ picture beginning in
 852            this packet, if any */
 853         ipts = pkt->pts;
 854         ptr = pkt->data;
 855         if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
 856             avpicture_fill((AVPicture *)frame, ptr,
 857                            is->video_st->codec.pix_fmt,
 858                            is->video_st->codec.width,
 859                            is->video_st->codec.height);
 860             pts = 0;
 861             if (ipts != AV_NOPTS_VALUE)
 862                 pts = (double)ipts * is->ic->pts_num / is->ic->pts_den;
 863             frame->pict_type = FF_I_TYPE;
 864             if (output_picture2(is, frame, pts) < 0)
 865                 goto the_end;
 866         } else {
 867             len = pkt->size;
 868             while (len > 0) {
 869                 if (is->picture_start) {
 870                     is->ipts = ipts;
 871                     is->picture_start = 0;
 872                     ipts = AV_NOPTS_VALUE;
 873                 }
 874                 len1 = avcodec_decode_video(&is->video_st->codec,
 875                                             frame, &got_picture, ptr, len);
 876                 if (len1 < 0)
 877                     break;
 878                 if (got_picture) {
 879                     pts = 0;
 880                     if (is->ipts != AV_NOPTS_VALUE)
 881                         pts = (double)is->ipts * is->ic->pts_num / is->ic->pts_den;
 882                     if (output_picture2(is, frame, pts) < 0)
 883                         goto the_end;
 884                     is->picture_start = 1;
 885                 }
 886                 ptr += len1;
 887                 len -= len1;
 888             }
 889         }
 890         av_free_packet(pkt);
 891     }
 892  the_end:
 893     av_free(frame);
 894     return 0;
 895 }
 896
 897 /* copy samples for viewing in editor window */
 898 static void update_sample_display(VideoState *is, short *samples, int samples_size)
 899 {
 900     int size, len, channels;
 901
 902     channels = is->audio_st->codec.channels;
 903
 904     size = samples_size / sizeof(short);
 905     while (size > 0) {
 906         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
 907         if (len > size)
 908             len = size;
 909         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
 910         samples += len;
 911         is->sample_array_index += len;
 912         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
 913             is->sample_array_index = 0;
 914         size -= len;
 915     }
 916 }
 917
 918 /* return the new audio buffer size (samples can be added or deleted
 919    to get better sync if video or external master clock) */
 920 static int synchronize_audio(VideoState *is, short *samples,
 921                              int samples_size1, double pts)
 922 {
 923     int n, samples_size;
 924     double ref_clock;
 925
 926     n = 2 * is->audio_st->codec.channels;
 927     samples_size = samples_size1;
 928
 929     /* if not master, then we try to remove or add samples to correct the clock */
 930     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
 931          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
 932         double diff, avg_diff;
 933         int wanted_size, min_size, max_size, nb_samples;
 934
 935         ref_clock = get_master_clock(is);
 936         diff = get_audio_clock(is) - ref_clock;
 937
 938         if (diff < AV_NOSYNC_THRESHOLD) {
 939             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
 940             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
 941                 /* not enough measures to have a correct estimate */
 942                 is->audio_diff_avg_count++;
 943             } else {
 944                 /* estimate the A-V difference */
 945                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
 946
 947                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
 948                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
 949                     nb_samples = samples_size / n;
 950
 951                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
 952                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
 953                     if (wanted_size < min_size)
 954                         wanted_size = min_size;
 955                     else if (wanted_size > max_size)
 956                         wanted_size = max_size;
 957
 958                     /* add or remove samples to correction the synchro */
 959                     if (wanted_size < samples_size) {
 960                         /* remove samples */
 961                         samples_size = wanted_size;
 962                     } else if (wanted_size > samples_size) {
 963                         uint8_t *samples_end, *q;
 964                         int nb;
 965
 966                         /* add samples */
 967                         nb = (samples_size - wanted_size);
 968                         samples_end = (uint8_t *)samples + samples_size - n;
 969                         q = samples_end + n;
 970                         while (nb > 0) {
 971                             memcpy(q, samples_end, n);
 972                             q += n;
 973                             nb -= n;
 974                         }
 975                         samples_size = wanted_size;
 976                     }
 977                 }
 978 #if 0
 979                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
 980                        diff, avg_diff, samples_size - samples_size1,
 981                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
 982 #endif
 983             }
 984         } else {
 985             /* too big difference : may be initial PTS errors, so
 986                reset A-V filter */
 987             is->audio_diff_avg_count = 0;
 988             is->audio_diff_cum = 0;
 989         }
 990     }
 991
 992     return samples_size;
 993 }
 994
 995 /* decode one audio frame and returns its uncompressed size */
 996 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
 997 {
 998     AVPacket *pkt = &is->audio_pkt;
 999     int len1, data_size;
1000     double pts;
1001
1002     for(;;) {
1003         if (is->paused || is->audioq.abort_request) {
1004             return -1;
1005         }
1006         while (is->audio_pkt_size > 0) {
1007             len1 = avcodec_decode_audio(&is->audio_st->codec,
1008                                         (int16_t *)audio_buf, &data_size,
1009                                         is->audio_pkt_data, is->audio_pkt_size);
1010             if (len1 < 0)
1011                 break;
1012             is->audio_pkt_data += len1;
1013             is->audio_pkt_size -= len1;
1014             if (data_size > 0) {
1015                 pts = 0;
1016                 if (is->audio_pkt_ipts != AV_NOPTS_VALUE)
1017                     pts = (double)is->audio_pkt_ipts * is->ic->pts_num / is->ic->pts_den;
1018                 /* if no pts, then compute it */
1019                 if (pts != 0) {
1020                     is->audio_clock = pts;
1021                 } else {
1022                     int n;
1023                     n = 2 * is->audio_st->codec.channels;
1024                     is->audio_clock += (double)data_size / (double)(n * is->audio_st->codec.sample_rate);
1025                 }
1026 #if defined(DEBUG_SYNC)
1027                 {
1028                     static double last_clock;
1029                     printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1030                            is->audio_clock - last_clock,
1031                            is->audio_clock, pts);
1032                     last_clock = is->audio_clock;
1033                 }
1034 #endif
1035                 *pts_ptr = is->audio_clock;
1036                 is->audio_pkt_ipts = AV_NOPTS_VALUE;
1037                 /* we got samples : we can exit now */
1038                 return data_size;
1039             }
1040         }
1041
1042         /* free previous packet if any */
1043         if (pkt->destruct)
1044             av_free_packet(pkt);
1045
1046         /* read next packet */
1047         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1048             return -1;
1049         is->audio_pkt_data = pkt->data;
1050         is->audio_pkt_size = pkt->size;
1051         is->audio_pkt_ipts = pkt->pts;
1052     }
1053 }
1054
1055 /* get the current audio output buffer size, in samples. With SDL, we
1056    cannot have a precise information */
1057 static int audio_write_get_buf_size(VideoState *is)
1058 {
1059     return is->audio_hw_buf_size - is->audio_buf_index;
1060 }
1061
1062
1063 /* prepare a new audio buffer */
1064 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1065 {
1066     VideoState *is = opaque;
1067     int audio_size, len1;
1068     double pts;
1069
1070     audio_callback_time = av_gettime();
1071
1072     while (len > 0) {
1073         if (is->audio_buf_index >= is->audio_buf_size) {
1074            audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1075            if (audio_size < 0) {
1076                 /* if error, just output silence */
1077                is->audio_buf_size = 1024;
1078                memset(is->audio_buf, 0, is->audio_buf_size);
1079            } else {
1080                if (is->show_audio)
1081                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1082                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1083                                               pts);
1084                is->audio_buf_size = audio_size;
1085            }
1086            is->audio_buf_index = 0;
1087         }
1088         len1 = is->audio_buf_size - is->audio_buf_index;
1089         if (len1 > len)
1090             len1 = len;
1091         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1092         len -= len1;
1093         stream += len1;
1094         is->audio_buf_index += len1;
1095     }
1096 }
1097
1098
1099 /* open a given stream. Return 0 if OK */
1100 static int stream_component_open(VideoState *is, int stream_index)
1101 {
1102     AVFormatContext *ic = is->ic;
1103     AVCodecContext *enc;
1104     AVCodec *codec;
1105     SDL_AudioSpec wanted_spec, spec;
1106
1107     if (stream_index < 0 || stream_index >= ic->nb_streams)
1108         return -1;
1109     enc = &ic->streams[stream_index]->codec;
1110
1111     /* prepare audio output */
1112     if (enc->codec_type == CODEC_TYPE_AUDIO) {
1113         wanted_spec.freq = enc->sample_rate;
1114         wanted_spec.format = AUDIO_S16SYS;
1115         /* hack for AC3. XXX: suppress that */
1116         if (enc->channels > 2)
1117             enc->channels = 2;
1118         wanted_spec.channels = enc->channels;
1119         wanted_spec.silence = 0;
1120         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1121         wanted_spec.callback = sdl_audio_callback;
1122         wanted_spec.userdata = is;
1123         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1124             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1125             return -1;
1126         }
1127         is->audio_hw_buf_size = spec.size;
1128     }
1129
1130     codec = avcodec_find_decoder(enc->codec_id);
1131     if (!codec ||
1132         avcodec_open(enc, codec) < 0)
1133         return -1;
1134     switch(enc->codec_type) {
1135     case CODEC_TYPE_AUDIO:
1136         is->audio_stream = stream_index;
1137         is->audio_st = ic->streams[stream_index];
1138         is->audio_buf_size = 0;
1139         is->audio_buf_index = 0;
1140         is->audio_pkt_size = 0;
1141
1142         /* init averaging filter */
1143         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1144         is->audio_diff_avg_count = 0;
1145         /* since we do not have a precise anough audio fifo fullness,
1146            we correct audio sync only if larger than this threshold */
1147         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1148
1149         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1150         packet_queue_init(&is->audioq);
1151         SDL_PauseAudio(0);
1152         break;
1153     case CODEC_TYPE_VIDEO:
1154         is->video_stream = stream_index;
1155         is->video_st = ic->streams[stream_index];
1156
1157         is->frame_last_delay = 40e-3;
1158         is->frame_timer = (double)av_gettime() / 1000000.0;
1159         is->picture_start = 1;
1160         is->video_current_pts_time = av_gettime();
1161
1162         packet_queue_init(&is->videoq);
1163         is->video_tid = SDL_CreateThread(video_thread, is);
1164         break;
1165     default:
1166         break;
1167     }
1168     return 0;
1169 }
1170
1171 static void stream_component_close(VideoState *is, int stream_index)
1172 {
1173     AVFormatContext *ic = is->ic;
1174     AVCodecContext *enc;
1175
1176     enc = &ic->streams[stream_index]->codec;
1177
1178     switch(enc->codec_type) {
1179     case CODEC_TYPE_AUDIO:
1180         packet_queue_abort(&is->audioq);
1181
1182         SDL_CloseAudio();
1183
1184         packet_queue_end(&is->audioq);
1185         break;
1186     case CODEC_TYPE_VIDEO:
1187         packet_queue_abort(&is->videoq);
1188
1189         /* note: we also signal this mutex to make sure we deblock the
1190            video thread in all cases */
1191         SDL_LockMutex(is->pictq_mutex);
1192         SDL_CondSignal(is->pictq_cond);
1193         SDL_UnlockMutex(is->pictq_mutex);
1194
1195         SDL_WaitThread(is->video_tid, NULL);
1196
1197         packet_queue_end(&is->videoq);
1198         break;
1199     default:
1200         break;
1201     }
1202
1203     avcodec_close(enc);
1204     switch(enc->codec_type) {
1205     case CODEC_TYPE_AUDIO:
1206         is->audio_st = NULL;
1207         is->audio_stream = -1;
1208         break;
1209     case CODEC_TYPE_VIDEO:
1210         is->video_st = NULL;
1211         is->video_stream = -1;
1212         break;
1213     default:
1214         break;
1215     }
1216 }
1217
1218 void dump_stream_info(AVFormatContext *s)
1219 {
1220     if (s->track != 0)
1221         fprintf(stderr, "Track: %d\n", s->track);
1222     if (s->title[0] != '\0')
1223         fprintf(stderr, "Title: %s\n", s->title);
1224     if (s->author[0] != '\0')
1225         fprintf(stderr, "Author: %s\n", s->author);
1226     if (s->album[0] != '\0')
1227         fprintf(stderr, "Album: %s\n", s->album);
1228     if (s->year != 0)
1229         fprintf(stderr, "Year: %d\n", s->year);
1230     if (s->genre[0] != '\0')
1231         fprintf(stderr, "Genre: %s\n", s->genre);
1232 }
1233
1234 /* since we have only one decoding thread, we can use a global
1235    variable instead of a thread local variable */
1236 static VideoState *global_video_state;
1237
1238 static int decode_interrupt_cb(void)
1239 {
1240     return (global_video_state && global_video_state->abort_request);
1241 }
1242
1243 /* this thread gets the stream from the disk or the network */
1244 static int decode_thread(void *arg)
1245 {
1246     VideoState *is = arg;
1247     AVFormatContext *ic;
1248     int err, i, ret, video_index, audio_index;
1249     AVPacket pkt1, *pkt = &pkt1;
1250     AVFormatParameters params, *ap = &params;
1251
1252     video_index = -1;
1253     audio_index = -1;
1254     is->video_stream = -1;
1255     is->audio_stream = -1;
1256
1257     global_video_state = is;
1258     url_set_interrupt_cb(decode_interrupt_cb);
1259
1260     memset(ap, 0, sizeof(*ap));
1261     ap->image_format = image_format;
1262
1263     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1264     if (err < 0) {
1265         print_error(is->filename, err);
1266         ret = -1;
1267         goto fail;
1268     }
1269     is->ic = ic;
1270     err = av_find_stream_info(ic);
1271     if (err < 0) {
1272         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1273         ret = -1;
1274         goto fail;
1275     }
1276
1277     for(i = 0; i < ic->nb_streams; i++) {
1278         AVCodecContext *enc = &ic->streams[i]->codec;
1279         switch(enc->codec_type) {
1280         case CODEC_TYPE_AUDIO:
1281             if (audio_index < 0 && !audio_disable)
1282                 audio_index = i;
1283             break;
1284         case CODEC_TYPE_VIDEO:
1285             if (video_index < 0 && !video_disable)
1286                 video_index = i;
1287             break;
1288         default:
1289             break;
1290         }
1291     }
1292     if (show_status) {
1293         dump_format(ic, 0, is->filename, 0);
1294         dump_stream_info(ic);
1295     }
1296
1297     /* open the streams */
1298     if (audio_index >= 0) {
1299         stream_component_open(is, audio_index);
1300     }
1301
1302     if (video_index >= 0) {
1303         stream_component_open(is, video_index);
1304     } else {
1305         if (!display_disable)
1306             is->show_audio = 1;
1307     }
1308
1309     if (is->video_stream < 0 && is->audio_stream < 0) {
1310         fprintf(stderr, "%s: could not open codecs\n", is->filename);
1311         ret = -1;
1312         goto fail;
1313     }
1314
1315     for(;;) {
1316         if (is->abort_request)
1317             break;
1318 #ifdef CONFIG_NETWORK
1319         if (is->paused != is->last_paused) {
1320             is->last_paused = is->paused;
1321             if (ic->iformat == &rtsp_demux) {
1322                 if (is->paused)
1323                     rtsp_pause(ic);
1324                 else
1325                     rtsp_resume(ic);
1326             }
1327         }
1328         if (is->paused && ic->iformat == &rtsp_demux) {
1329             /* wait 10 ms to avoid trying to get another packet */
1330             /* XXX: horrible */
1331             SDL_Delay(10);
1332             continue;
1333         }
1334 #endif
1335
1336         /* if the queue are full, no need to read more */
1337         if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1338             is->videoq.size > MAX_VIDEOQ_SIZE) {
1339             /* wait 10 ms */
1340             SDL_Delay(10);
1341             continue;
1342         }
1343         ret = av_read_packet(ic, pkt);
1344         if (ret < 0) {
1345             break;
1346         }
1347         if (pkt->stream_index == is->audio_stream) {
1348             packet_queue_put(&is->audioq, pkt);
1349         } else if (pkt->stream_index == is->video_stream) {
1350             packet_queue_put(&is->videoq, pkt);
1351         } else {
1352             av_free_packet(pkt);
1353         }
1354     }
1355     /* wait until the end */
1356     while (!is->abort_request) {
1357         SDL_Delay(100);
1358     }
1359
1360     ret = 0;
1361  fail:
1362     /* disable interrupting */
1363     global_video_state = NULL;
1364
1365     /* close each stream */
1366     if (is->audio_stream >= 0)
1367         stream_component_close(is, is->audio_stream);
1368     if (is->video_stream >= 0)
1369         stream_component_close(is, is->video_stream);
1370     if (is->ic) {
1371         av_close_input_file(is->ic);
1372         is->ic = NULL; /* safety */
1373     }
1374     url_set_interrupt_cb(NULL);
1375
1376     if (ret != 0) {
1377         SDL_Event event;
1378
1379         event.type = FF_QUIT_EVENT;
1380         event.user.data1 = is;
1381         SDL_PushEvent(&event);
1382     }
1383     return 0;
1384 }
1385
1386 /* pause or resume the video */
1387 static void stream_pause(VideoState *is)
1388 {
1389     is->paused = !is->paused;
1390 }
1391
1392 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1393 {
1394     VideoState *is;
1395
1396     is = av_mallocz(sizeof(VideoState));
1397     if (!is)
1398         return NULL;
1399     pstrcpy(is->filename, sizeof(is->filename), filename);
1400     is->iformat = iformat;
1401     if (screen) {
1402         is->width = screen->w;
1403         is->height = screen->h;
1404     }
1405     is->ytop = 0;
1406     is->xleft = 0;
1407
1408     /* start video display */
1409     is->pictq_mutex = SDL_CreateMutex();
1410     is->pictq_cond = SDL_CreateCond();
1411
1412     /* add the refresh timer to draw the picture */
1413     schedule_refresh(is, 40);
1414
1415     is->av_sync_type = av_sync_type;
1416     is->parse_tid = SDL_CreateThread(decode_thread, is);
1417     if (!is->parse_tid) {
1418         av_free(is);
1419         return NULL;
1420     }
1421     return is;
1422 }
1423
1424 static void stream_close(VideoState *is)
1425 {
1426     VideoPicture *vp;
1427     int i;
1428     /* XXX: use a special url_shutdown call to abort parse cleanly */
1429     is->abort_request = 1;
1430     SDL_WaitThread(is->parse_tid, NULL);
1431
1432     /* free all pictures */
1433     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1434         vp = &is->pictq[i];
1435         if (vp->bmp) {
1436             SDL_FreeYUVOverlay(vp->bmp);
1437             vp->bmp = NULL;
1438         }
1439     }
1440     SDL_DestroyMutex(is->pictq_mutex);
1441     SDL_DestroyCond(is->pictq_cond);
1442 }
1443
1444 void stream_cycle_channel(VideoState *is, int codec_type)
1445 {
1446     AVFormatContext *ic = is->ic;
1447     int start_index, stream_index;
1448     AVStream *st;
1449
1450     if (codec_type == CODEC_TYPE_VIDEO)
1451         start_index = is->video_stream;
1452     else
1453         start_index = is->audio_stream;
1454     if (start_index < 0)
1455         return;
1456     stream_index = start_index;
1457     for(;;) {
1458         if (++stream_index >= is->ic->nb_streams)
1459             stream_index = 0;
1460         if (stream_index == start_index)
1461             return;
1462         st = ic->streams[stream_index];
1463         if (st->codec.codec_type == codec_type) {
1464             /* check that parameters are OK */
1465             switch(codec_type) {
1466             case CODEC_TYPE_AUDIO:
1467                 if (st->codec.sample_rate != 0 &&
1468                     st->codec.channels != 0)
1469                     goto the_end;
1470                 break;
1471             case CODEC_TYPE_VIDEO:
1472                 goto the_end;
1473             default:
1474                 break;
1475             }
1476         }
1477     }
1478  the_end:
1479     stream_component_close(is, start_index);
1480     stream_component_open(is, stream_index);
1481 }
1482
1483
1484 void toggle_full_screen(void)
1485 {
1486     int w, h, flags;
1487     is_full_screen = !is_full_screen;
1488     if (!fs_screen_width) {
1489         /* use default SDL method */
1490         SDL_WM_ToggleFullScreen(screen);
1491     } else {
1492         /* use the recorded resolution */
1493         flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1494         if (is_full_screen) {
1495             w = fs_screen_width;
1496             h = fs_screen_height;
1497             flags |= SDL_FULLSCREEN;
1498         } else {
1499             w = screen_width;
1500             h = screen_height;
1501             flags |= SDL_RESIZABLE;
1502         }
1503         screen = SDL_SetVideoMode(w, h, 0, flags);
1504         cur_stream->width = w;
1505         cur_stream->height = h;
1506     }
1507 }
1508
1509 void toggle_pause(void)
1510 {
1511     if (cur_stream)
1512         stream_pause(cur_stream);
1513 }
1514
1515 void do_exit(void)
1516 {
1517     if (cur_stream) {
1518         stream_close(cur_stream);
1519         cur_stream = NULL;
1520     }
1521     if (show_status)
1522         printf("\n");
1523     SDL_Quit();
1524     exit(0);
1525 }
1526
1527 void toggle_audio_display(void)
1528 {
1529     if (cur_stream) {
1530         cur_stream->show_audio = !cur_stream->show_audio;
1531     }
1532 }
1533
1534 /* handle an event sent by the GUI */
1535 void event_loop(void)
1536 {
1537     SDL_Event event;
1538
1539     for(;;) {
1540         SDL_WaitEvent(&event);
1541         switch(event.type) {
1542         case SDL_KEYDOWN:
1543             switch(event.key.keysym.sym) {
1544             case SDLK_ESCAPE:
1545             case SDLK_q:
1546                 do_exit();
1547                 break;
1548             case SDLK_f:
1549                 toggle_full_screen();
1550                 break;
1551             case SDLK_p:
1552             case SDLK_SPACE:
1553                 toggle_pause();
1554                 break;
1555             case SDLK_a:
1556                 if (cur_stream)
1557                     stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1558                 break;
1559             case SDLK_v:
1560                 if (cur_stream)
1561                     stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1562                 break;
1563             case SDLK_w:
1564                 toggle_audio_display();
1565                 break;
1566             default:
1567                 break;
1568             }
1569             break;
1570         case SDL_VIDEORESIZE:
1571             if (cur_stream) {
1572                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1573                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1574                 cur_stream->width = event.resize.w;
1575                 cur_stream->height = event.resize.h;
1576             }
1577             break;
1578         case SDL_QUIT:
1579         case FF_QUIT_EVENT:
1580             do_exit();
1581             break;
1582         case FF_ALLOC_EVENT:
1583             alloc_picture(event.user.data1);
1584             break;
1585         case FF_REFRESH_EVENT:
1586             video_refresh_timer(event.user.data1);
1587             break;
1588         default:
1589             break;
1590         }
1591     }
1592 }
1593
1594 void opt_width(const char *arg)
1595 {
1596     screen_width = atoi(arg);
1597 }
1598
1599 void opt_height(const char *arg)
1600 {
1601     screen_height = atoi(arg);
1602 }
1603
1604 static void opt_format(const char *arg)
1605 {
1606     file_iformat = av_find_input_format(arg);
1607     if (!file_iformat) {
1608         fprintf(stderr, "Unknown input format: %s\n", arg);
1609         exit(1);
1610     }
1611 }
1612
1613 static void opt_image_format(const char *arg)
1614 {
1615     AVImageFormat *f;
1616
1617     for(f = first_image_format; f != NULL; f = f->next) {
1618         if (!strcmp(arg, f->name))
1619             break;
1620     }
1621     if (!f) {
1622         fprintf(stderr, "Unknown image format: '%s'\n", arg);
1623         exit(1);
1624     }
1625     image_format = f;
1626 }
1627
1628 #ifdef CONFIG_NETWORK
1629 void opt_rtp_tcp(void)
1630 {
1631     /* only tcp protocol */
1632     rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1633 }
1634 #endif
1635
1636 void opt_sync(const char *arg)
1637 {
1638     if (!strcmp(arg, "audio"))
1639         av_sync_type = AV_SYNC_AUDIO_MASTER;
1640     else if (!strcmp(arg, "video"))
1641         av_sync_type = AV_SYNC_VIDEO_MASTER;
1642     else if (!strcmp(arg, "ext"))
1643         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1644     else
1645         show_help();
1646 }
1647
1648 const OptionDef options[] = {
1649     { "h", 0, {(void*)show_help}, "show help" },
1650     { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1651     { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1652 #if 0
1653     /* disabled as SDL/X11 does not support it correctly on application launch */
1654     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1655 #endif
1656     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1657     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1658     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1659     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1660     { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1661     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1662 #ifdef CONFIG_NETWORK
1663     { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1664 #endif
1665     { "sync", HAS_ARG | OPT_EXPERT, {(void*)&opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1666     { NULL, },
1667 };
1668
1669 void show_help(void)
1670 {
1671     printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1672            "usage: ffplay [options] input_file\n"
1673            "Simple media player\n");
1674     printf("\n");
1675     show_help_options(options, "Main options:\n",
1676                       OPT_EXPERT, 0);
1677     show_help_options(options, "\nAdvanced options:\n",
1678                       OPT_EXPERT, OPT_EXPERT);
1679     printf("\nWhile playing:\n"
1680            "q, ESC              quit\n"
1681            "f                   toggle full screen\n"
1682            "p, SPC              pause\n"
1683            "a                   cycle audio channel\n"
1684            "v                   cycle video channel\n"
1685            "w                   show audio waves\n"
1686            );
1687     exit(1);
1688 }
1689
1690 void parse_arg_file(const char *filename)
1691 {
1692     if (!strcmp(filename, "-"))
1693                     filename = "pipe:";
1694     input_filename = filename;
1695 }
1696
1697 /* Called from the main */
1698 int main(int argc, char **argv)
1699 {
1700     int flags, w, h;
1701
1702     /* register all codecs, demux and protocols */
1703     av_register_all();
1704
1705     parse_options(argc, argv, options);
1706
1707     if (!input_filename)
1708         show_help();
1709
1710     if (display_disable) {
1711         video_disable = 1;
1712     }
1713     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1714 #ifndef CONFIG_WIN32
1715     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1716 #endif
1717     if (SDL_Init (flags)) {
1718         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1719         exit(1);
1720     }
1721
1722     if (!display_disable) {
1723 #ifdef HAVE_X11
1724         /* save the screen resolution... SDL should allow full screen
1725            by resizing the window */
1726         {
1727             Display *dpy;
1728             dpy = XOpenDisplay(NULL);
1729             if (dpy) {
1730                 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1731                 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1732                 XCloseDisplay(dpy);
1733             }
1734         }
1735 #endif
1736         flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1737         if (is_full_screen && fs_screen_width) {
1738             w = fs_screen_width;
1739             h = fs_screen_height;
1740             flags |= SDL_FULLSCREEN;
1741         } else {
1742             w = screen_width;
1743             h = screen_height;
1744             flags |= SDL_RESIZABLE;
1745         }
1746         screen = SDL_SetVideoMode(w, h, 0, flags);
1747         if (!screen) {
1748             fprintf(stderr, "SDL: could not set video mode - exiting\n");
1749             exit(1);
1750         }
1751         SDL_WM_SetCaption("FFplay", "FFplay");
1752     }
1753
1754     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1755     SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1756     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1757     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1758
1759     cur_stream = stream_open(input_filename, file_iformat);
1760
1761     event_loop();
1762
1763     /* never returns */
1764
1765     return 0;
1766 }