changing AVCodecContext codec -> *codec in AVStream so additions to AVCodecContext...
[libav.git] / 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 #ifdef CONFIG_OS2
32 #define INCL_DOS
33 #include <os2.h>
34 #include <stdio.h>
35
36 void MorphToPM()
37 {
38 PPIB pib;
39 PTIB tib;
40
41 DosGetInfoBlocks(&tib, &pib);
42
43 // Change flag from VIO to PM:
44 if (pib->pib_ultype==2) pib->pib_ultype = 3;
45 }
46 #endif
47
48 #if defined(__linux__)
49 #define HAVE_X11
50 #endif
51
52 #ifdef HAVE_X11
53 #include <X11/Xlib.h>
54 #endif
55
56 //#define DEBUG_SYNC
57
58 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
59 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
60
61 /* SDL audio buffer size, in samples. Should be small to have precise
62 A/V sync as SDL does not have hardware buffer fullness info. */
63 #define SDL_AUDIO_BUFFER_SIZE 1024
64
65 /* no AV sync correction is done if below the AV sync threshold */
66 #define AV_SYNC_THRESHOLD 0.01
67 /* no AV correction is done if too big error */
68 #define AV_NOSYNC_THRESHOLD 10.0
69
70 /* maximum audio speed change to get correct sync */
71 #define SAMPLE_CORRECTION_PERCENT_MAX 10
72
73 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
74 #define AUDIO_DIFF_AVG_NB 20
75
76 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
77 #define SAMPLE_ARRAY_SIZE (2*65536)
78
79 typedef struct PacketQueue {
80 AVPacketList *first_pkt, *last_pkt;
81 int nb_packets;
82 int size;
83 int abort_request;
84 SDL_mutex *mutex;
85 SDL_cond *cond;
86 } PacketQueue;
87
88 #define VIDEO_PICTURE_QUEUE_SIZE 1
89
90 typedef struct VideoPicture {
91 double pts; /* presentation time stamp for this picture */
92 SDL_Overlay *bmp;
93 int width, height; /* source height & width */
94 int allocated;
95 } VideoPicture;
96
97 enum {
98 AV_SYNC_AUDIO_MASTER, /* default choice */
99 AV_SYNC_VIDEO_MASTER,
100 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
101 };
102
103 typedef struct VideoState {
104 SDL_Thread *parse_tid;
105 SDL_Thread *video_tid;
106 AVInputFormat *iformat;
107 int no_background;
108 int abort_request;
109 int paused;
110 int last_paused;
111 int seek_req;
112 int seek_flags;
113 int64_t seek_pos;
114 AVFormatContext *ic;
115 int dtg_active_format;
116
117 int audio_stream;
118
119 int av_sync_type;
120 double external_clock; /* external clock base */
121 int64_t external_clock_time;
122
123 double audio_clock;
124 double audio_diff_cum; /* used for AV difference average computation */
125 double audio_diff_avg_coef;
126 double audio_diff_threshold;
127 int audio_diff_avg_count;
128 AVStream *audio_st;
129 PacketQueue audioq;
130 int audio_hw_buf_size;
131 /* samples output by the codec. we reserve more space for avsync
132 compensation */
133 uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
134 unsigned int audio_buf_size; /* in bytes */
135 int audio_buf_index; /* in bytes */
136 AVPacket audio_pkt;
137 uint8_t *audio_pkt_data;
138 int audio_pkt_size;
139
140 int show_audio; /* if true, display audio samples */
141 int16_t sample_array[SAMPLE_ARRAY_SIZE];
142 int sample_array_index;
143 int last_i_start;
144
145 double frame_timer;
146 double frame_last_pts;
147 double frame_last_delay;
148 double video_clock;
149 int video_stream;
150 AVStream *video_st;
151 PacketQueue videoq;
152 double video_last_P_pts; /* pts of the last P picture (needed if B
153 frames are present) */
154 double video_current_pts; /* current displayed pts (different from
155 video_clock if frame fifos are used) */
156 int64_t video_current_pts_time; /* time at which we updated
157 video_current_pts - used to
158 have running video pts */
159 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
160 int pictq_size, pictq_rindex, pictq_windex;
161 SDL_mutex *pictq_mutex;
162 SDL_cond *pictq_cond;
163
164 SDL_mutex *video_decoder_mutex;
165 SDL_mutex *audio_decoder_mutex;
166
167 // QETimer *video_timer;
168 char filename[1024];
169 int width, height, xleft, ytop;
170 } VideoState;
171
172 void show_help(void);
173 static int audio_write_get_buf_size(VideoState *is);
174
175 /* options specified by the user */
176 static AVInputFormat *file_iformat;
177 static AVImageFormat *image_format;
178 static const char *input_filename;
179 static int fs_screen_width;
180 static int fs_screen_height;
181 static int screen_width = 640;
182 static int screen_height = 480;
183 static int audio_disable;
184 static int video_disable;
185 static int display_disable;
186 static int show_status;
187 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
188 static int64_t start_time = AV_NOPTS_VALUE;
189 static int debug = 0;
190 static int debug_mv = 0;
191 static int step = 0;
192 static int thread_count = 1;
193 static int workaround_bugs = 1;
194 static int fast = 0;
195 static int lowres = 0;
196 static int idct = FF_IDCT_AUTO;
197 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
198 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
199 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
200 static int error_resilience = FF_ER_CAREFULL;
201 static int error_concealment = 3;
202
203 /* current context */
204 static int is_full_screen;
205 static VideoState *cur_stream;
206 static int64_t audio_callback_time;
207
208 #define FF_ALLOC_EVENT (SDL_USEREVENT)
209 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
210 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
211
212 SDL_Surface *screen;
213
214 /* packet queue handling */
215 static void packet_queue_init(PacketQueue *q)
216 {
217 memset(q, 0, sizeof(PacketQueue));
218 q->mutex = SDL_CreateMutex();
219 q->cond = SDL_CreateCond();
220 }
221
222 static void packet_queue_flush(PacketQueue *q)
223 {
224 AVPacketList *pkt, *pkt1;
225
226 SDL_LockMutex(q->mutex);
227 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
228 pkt1 = pkt->next;
229 av_free_packet(&pkt->pkt);
230 av_freep(&pkt);
231 }
232 q->last_pkt = NULL;
233 q->first_pkt = NULL;
234 q->nb_packets = 0;
235 q->size = 0;
236 SDL_UnlockMutex(q->mutex);
237 }
238
239 static void packet_queue_end(PacketQueue *q)
240 {
241 packet_queue_flush(q);
242 SDL_DestroyMutex(q->mutex);
243 SDL_DestroyCond(q->cond);
244 }
245
246 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
247 {
248 AVPacketList *pkt1;
249
250 /* duplicate the packet */
251 if (av_dup_packet(pkt) < 0)
252 return -1;
253
254 pkt1 = av_malloc(sizeof(AVPacketList));
255 if (!pkt1)
256 return -1;
257 pkt1->pkt = *pkt;
258 pkt1->next = NULL;
259
260
261 SDL_LockMutex(q->mutex);
262
263 if (!q->last_pkt)
264
265 q->first_pkt = pkt1;
266 else
267 q->last_pkt->next = pkt1;
268 q->last_pkt = pkt1;
269 q->nb_packets++;
270 q->size += pkt1->pkt.size;
271 /* XXX: should duplicate packet data in DV case */
272 SDL_CondSignal(q->cond);
273
274 SDL_UnlockMutex(q->mutex);
275 return 0;
276 }
277
278 static void packet_queue_abort(PacketQueue *q)
279 {
280 SDL_LockMutex(q->mutex);
281
282 q->abort_request = 1;
283
284 SDL_CondSignal(q->cond);
285
286 SDL_UnlockMutex(q->mutex);
287 }
288
289 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
290 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
291 {
292 AVPacketList *pkt1;
293 int ret;
294
295 SDL_LockMutex(q->mutex);
296
297 for(;;) {
298 if (q->abort_request) {
299 ret = -1;
300 break;
301 }
302
303 pkt1 = q->first_pkt;
304 if (pkt1) {
305 q->first_pkt = pkt1->next;
306 if (!q->first_pkt)
307 q->last_pkt = NULL;
308 q->nb_packets--;
309 q->size -= pkt1->pkt.size;
310 *pkt = pkt1->pkt;
311 av_free(pkt1);
312 ret = 1;
313 break;
314 } else if (!block) {
315 ret = 0;
316 break;
317 } else {
318 SDL_CondWait(q->cond, q->mutex);
319 }
320 }
321 SDL_UnlockMutex(q->mutex);
322 return ret;
323 }
324
325 static inline void fill_rectangle(SDL_Surface *screen,
326 int x, int y, int w, int h, int color)
327 {
328 SDL_Rect rect;
329 rect.x = x;
330 rect.y = y;
331 rect.w = w;
332 rect.h = h;
333 SDL_FillRect(screen, &rect, color);
334 }
335
336 #if 0
337 /* draw only the border of a rectangle */
338 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
339 {
340 int w1, w2, h1, h2;
341
342 /* fill the background */
343 w1 = x;
344 if (w1 < 0)
345 w1 = 0;
346 w2 = s->width - (x + w);
347 if (w2 < 0)
348 w2 = 0;
349 h1 = y;
350 if (h1 < 0)
351 h1 = 0;
352 h2 = s->height - (y + h);
353 if (h2 < 0)
354 h2 = 0;
355 fill_rectangle(screen,
356 s->xleft, s->ytop,
357 w1, s->height,
358 color);
359 fill_rectangle(screen,
360 s->xleft + s->width - w2, s->ytop,
361 w2, s->height,
362 color);
363 fill_rectangle(screen,
364 s->xleft + w1, s->ytop,
365 s->width - w1 - w2, h1,
366 color);
367 fill_rectangle(screen,
368 s->xleft + w1, s->ytop + s->height - h2,
369 s->width - w1 - w2, h2,
370 color);
371 }
372 #endif
373
374 static void video_image_display(VideoState *is)
375 {
376 VideoPicture *vp;
377 float aspect_ratio;
378 int width, height, x, y;
379 SDL_Rect rect;
380
381 vp = &is->pictq[is->pictq_rindex];
382 if (vp->bmp) {
383 /* XXX: use variable in the frame */
384 if (is->video_st->codec->sample_aspect_ratio.num == 0)
385 aspect_ratio = 0;
386 else
387 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio)
388 * is->video_st->codec->width / is->video_st->codec->height;;
389 if (aspect_ratio <= 0.0)
390 aspect_ratio = (float)is->video_st->codec->width /
391 (float)is->video_st->codec->height;
392 /* if an active format is indicated, then it overrides the
393 mpeg format */
394 #if 0
395 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
396 is->dtg_active_format = is->video_st->codec->dtg_active_format;
397 printf("dtg_active_format=%d\n", is->dtg_active_format);
398 }
399 #endif
400 #if 0
401 switch(is->video_st->codec->dtg_active_format) {
402 case FF_DTG_AFD_SAME:
403 default:
404 /* nothing to do */
405 break;
406 case FF_DTG_AFD_4_3:
407 aspect_ratio = 4.0 / 3.0;
408 break;
409 case FF_DTG_AFD_16_9:
410 aspect_ratio = 16.0 / 9.0;
411 break;
412 case FF_DTG_AFD_14_9:
413 aspect_ratio = 14.0 / 9.0;
414 break;
415 case FF_DTG_AFD_4_3_SP_14_9:
416 aspect_ratio = 14.0 / 9.0;
417 break;
418 case FF_DTG_AFD_16_9_SP_14_9:
419 aspect_ratio = 14.0 / 9.0;
420 break;
421 case FF_DTG_AFD_SP_4_3:
422 aspect_ratio = 4.0 / 3.0;
423 break;
424 }
425 #endif
426
427 /* XXX: we suppose the screen has a 1.0 pixel ratio */
428 height = is->height;
429 width = ((int)rint(height * aspect_ratio)) & -3;
430 if (width > is->width) {
431 width = is->width;
432 height = ((int)rint(width / aspect_ratio)) & -3;
433 }
434 x = (is->width - width) / 2;
435 y = (is->height - height) / 2;
436 if (!is->no_background) {
437 /* fill the background */
438 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
439 } else {
440 is->no_background = 0;
441 }
442 rect.x = is->xleft + x;
443 rect.y = is->xleft + y;
444 rect.w = width;
445 rect.h = height;
446 SDL_DisplayYUVOverlay(vp->bmp, &rect);
447 } else {
448 #if 0
449 fill_rectangle(screen,
450 is->xleft, is->ytop, is->width, is->height,
451 QERGB(0x00, 0x00, 0x00));
452 #endif
453 }
454 }
455
456 static inline int compute_mod(int a, int b)
457 {
458 a = a % b;
459 if (a >= 0)
460 return a;
461 else
462 return a + b;
463 }
464
465 static void video_audio_display(VideoState *s)
466 {
467 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
468 int ch, channels, h, h2, bgcolor, fgcolor;
469 int16_t time_diff;
470
471 /* compute display index : center on currently output samples */
472 channels = s->audio_st->codec->channels;
473 nb_display_channels = channels;
474 if (!s->paused) {
475 n = 2 * channels;
476 delay = audio_write_get_buf_size(s);
477 delay /= n;
478
479 /* to be more precise, we take into account the time spent since
480 the last buffer computation */
481 if (audio_callback_time) {
482 time_diff = av_gettime() - audio_callback_time;
483 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
484 }
485
486 delay -= s->width / 2;
487 if (delay < s->width)
488 delay = s->width;
489 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
490 s->last_i_start = i_start;
491 } else {
492 i_start = s->last_i_start;
493 }
494
495 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
496 fill_rectangle(screen,
497 s->xleft, s->ytop, s->width, s->height,
498 bgcolor);
499
500 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
501
502 /* total height for one channel */
503 h = s->height / nb_display_channels;
504 /* graph height / 2 */
505 h2 = (h * 9) / 20;
506 for(ch = 0;ch < nb_display_channels; ch++) {
507 i = i_start + ch;
508 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
509 for(x = 0; x < s->width; x++) {
510 y = (s->sample_array[i] * h2) >> 15;
511 if (y < 0) {
512 y = -y;
513 ys = y1 - y;
514 } else {
515 ys = y1;
516 }
517 fill_rectangle(screen,
518 s->xleft + x, ys, 1, y,
519 fgcolor);
520 i += channels;
521 if (i >= SAMPLE_ARRAY_SIZE)
522 i -= SAMPLE_ARRAY_SIZE;
523 }
524 }
525
526 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
527
528 for(ch = 1;ch < nb_display_channels; ch++) {
529 y = s->ytop + ch * h;
530 fill_rectangle(screen,
531 s->xleft, y, s->width, 1,
532 fgcolor);
533 }
534 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
535 }
536
537 /* display the current picture, if any */
538 static void video_display(VideoState *is)
539 {
540 if (is->audio_st && is->show_audio)
541 video_audio_display(is);
542 else if (is->video_st)
543 video_image_display(is);
544 }
545
546 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
547 {
548 SDL_Event event;
549 event.type = FF_REFRESH_EVENT;
550 event.user.data1 = opaque;
551 SDL_PushEvent(&event);
552 return 0; /* 0 means stop timer */
553 }
554
555 /* schedule a video refresh in 'delay' ms */
556 static void schedule_refresh(VideoState *is, int delay)
557 {
558 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
559 }
560
561 /* get the current audio clock value */
562 static double get_audio_clock(VideoState *is)
563 {
564 double pts;
565 int hw_buf_size, bytes_per_sec;
566 pts = is->audio_clock;
567 hw_buf_size = audio_write_get_buf_size(is);
568 bytes_per_sec = 0;
569 if (is->audio_st) {
570 bytes_per_sec = is->audio_st->codec->sample_rate *
571 2 * is->audio_st->codec->channels;
572 }
573 if (bytes_per_sec)
574 pts -= (double)hw_buf_size / bytes_per_sec;
575 return pts;
576 }
577
578 /* get the current video clock value */
579 static double get_video_clock(VideoState *is)
580 {
581 double delta;
582 if (is->paused) {
583 delta = 0;
584 } else {
585 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
586 }
587 return is->video_current_pts + delta;
588 }
589
590 /* get the current external clock value */
591 static double get_external_clock(VideoState *is)
592 {
593 int64_t ti;
594 ti = av_gettime();
595 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
596 }
597
598 /* get the current master clock value */
599 static double get_master_clock(VideoState *is)
600 {
601 double val;
602
603 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
604 if (is->video_st)
605 val = get_video_clock(is);
606 else
607 val = get_audio_clock(is);
608 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
609 if (is->audio_st)
610 val = get_audio_clock(is);
611 else
612 val = get_video_clock(is);
613 } else {
614 val = get_external_clock(is);
615 }
616 return val;
617 }
618
619 /* seek in the stream */
620 static void stream_seek(VideoState *is, int64_t pos, int rel)
621 {
622 if (!is->seek_req) {
623 is->seek_pos = pos;
624 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
625 is->seek_req = 1;
626 }
627 }
628
629 /* pause or resume the video */
630 static void stream_pause(VideoState *is)
631 {
632 is->paused = !is->paused;
633 if (is->paused) {
634 is->video_current_pts = get_video_clock(is);
635 }
636 }
637
638 /* called to display each frame */
639 static void video_refresh_timer(void *opaque)
640 {
641 VideoState *is = opaque;
642 VideoPicture *vp;
643 double actual_delay, delay, sync_threshold, ref_clock, diff;
644
645
646 if (is->video_st) {
647 if (is->pictq_size == 0) {
648 /* if no picture, need to wait */
649 schedule_refresh(is, 1);
650 } else {
651 /* dequeue the picture */
652 vp = &is->pictq[is->pictq_rindex];
653
654 /* update current video pts */
655 is->video_current_pts = vp->pts;
656 is->video_current_pts_time = av_gettime();
657
658 /* compute nominal delay */
659 delay = vp->pts - is->frame_last_pts;
660 if (delay <= 0 || delay >= 1.0) {
661 /* if incorrect delay, use previous one */
662 delay = is->frame_last_delay;
663 }
664 is->frame_last_delay = delay;
665 is->frame_last_pts = vp->pts;
666
667 /* update delay to follow master synchronisation source */
668 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
669 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
670 /* if video is slave, we try to correct big delays by
671 duplicating or deleting a frame */
672 ref_clock = get_master_clock(is);
673 diff = vp->pts - ref_clock;
674
675 /* skip or repeat frame. We take into account the
676 delay to compute the threshold. I still don't know
677 if it is the best guess */
678 sync_threshold = AV_SYNC_THRESHOLD;
679 if (delay > sync_threshold)
680 sync_threshold = delay;
681 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
682 if (diff <= -sync_threshold)
683 delay = 0;
684 else if (diff >= sync_threshold)
685 delay = 2 * delay;
686 }
687 }
688
689 is->frame_timer += delay;
690 /* compute the REAL delay (we need to do that to avoid
691 long term errors */
692 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
693 if (actual_delay < 0.010) {
694 /* XXX: should skip picture */
695 actual_delay = 0.010;
696 }
697 /* launch timer for next picture */
698 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
699
700 #if defined(DEBUG_SYNC)
701 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
702 delay, actual_delay, vp->pts, -diff);
703 #endif
704
705 /* display picture */
706 video_display(is);
707
708 /* update queue size and signal for next picture */
709 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
710 is->pictq_rindex = 0;
711
712 SDL_LockMutex(is->pictq_mutex);
713 is->pictq_size--;
714 SDL_CondSignal(is->pictq_cond);
715 SDL_UnlockMutex(is->pictq_mutex);
716 }
717 } else if (is->audio_st) {
718 /* draw the next audio frame */
719
720 schedule_refresh(is, 40);
721
722 /* if only audio stream, then display the audio bars (better
723 than nothing, just to test the implementation */
724
725 /* display picture */
726 video_display(is);
727 } else {
728 schedule_refresh(is, 100);
729 }
730 if (show_status) {
731 static int64_t last_time;
732 int64_t cur_time;
733 int aqsize, vqsize;
734 double av_diff;
735
736 cur_time = av_gettime();
737 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
738 aqsize = 0;
739 vqsize = 0;
740 if (is->audio_st)
741 aqsize = is->audioq.size;
742 if (is->video_st)
743 vqsize = is->videoq.size;
744 av_diff = 0;
745 if (is->audio_st && is->video_st)
746 av_diff = get_audio_clock(is) - get_video_clock(is);
747 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
748 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
749 fflush(stdout);
750 last_time = cur_time;
751 }
752 }
753 }
754
755 /* allocate a picture (needs to do that in main thread to avoid
756 potential locking problems */
757 static void alloc_picture(void *opaque)
758 {
759 VideoState *is = opaque;
760 VideoPicture *vp;
761
762 vp = &is->pictq[is->pictq_windex];
763
764 if (vp->bmp)
765 SDL_FreeYUVOverlay(vp->bmp);
766
767 #if 0
768 /* XXX: use generic function */
769 /* XXX: disable overlay if no hardware acceleration or if RGB format */
770 switch(is->video_st->codec->pix_fmt) {
771 case PIX_FMT_YUV420P:
772 case PIX_FMT_YUV422P:
773 case PIX_FMT_YUV444P:
774 case PIX_FMT_YUV422:
775 case PIX_FMT_YUV410P:
776 case PIX_FMT_YUV411P:
777 is_yuv = 1;
778 break;
779 default:
780 is_yuv = 0;
781 break;
782 }
783 #endif
784 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
785 is->video_st->codec->height,
786 SDL_YV12_OVERLAY,
787 screen);
788 vp->width = is->video_st->codec->width;
789 vp->height = is->video_st->codec->height;
790
791 SDL_LockMutex(is->pictq_mutex);
792 vp->allocated = 1;
793 SDL_CondSignal(is->pictq_cond);
794 SDL_UnlockMutex(is->pictq_mutex);
795 }
796
797 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
798 {
799 VideoPicture *vp;
800 int dst_pix_fmt;
801 AVPicture pict;
802
803 /* wait until we have space to put a new picture */
804 SDL_LockMutex(is->pictq_mutex);
805 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
806 !is->videoq.abort_request) {
807 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
808 }
809 SDL_UnlockMutex(is->pictq_mutex);
810
811 if (is->videoq.abort_request)
812 return -1;
813
814 vp = &is->pictq[is->pictq_windex];
815
816 /* alloc or resize hardware picture buffer */
817 if (!vp->bmp ||
818 vp->width != is->video_st->codec->width ||
819 vp->height != is->video_st->codec->height) {
820 SDL_Event event;
821
822 vp->allocated = 0;
823
824 /* the allocation must be done in the main thread to avoid
825 locking problems */
826 event.type = FF_ALLOC_EVENT;
827 event.user.data1 = is;
828 SDL_PushEvent(&event);
829
830 /* wait until the picture is allocated */
831 SDL_LockMutex(is->pictq_mutex);
832 while (!vp->allocated && !is->videoq.abort_request) {
833 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
834 }
835 SDL_UnlockMutex(is->pictq_mutex);
836
837 if (is->videoq.abort_request)
838 return -1;
839 }
840
841 /* if the frame is not skipped, then display it */
842 if (vp->bmp) {
843 /* get a pointer on the bitmap */
844 SDL_LockYUVOverlay (vp->bmp);
845
846 dst_pix_fmt = PIX_FMT_YUV420P;
847 pict.data[0] = vp->bmp->pixels[0];
848 pict.data[1] = vp->bmp->pixels[2];
849 pict.data[2] = vp->bmp->pixels[1];
850
851 pict.linesize[0] = vp->bmp->pitches[0];
852 pict.linesize[1] = vp->bmp->pitches[2];
853 pict.linesize[2] = vp->bmp->pitches[1];
854 img_convert(&pict, dst_pix_fmt,
855 (AVPicture *)src_frame, is->video_st->codec->pix_fmt,
856 is->video_st->codec->width, is->video_st->codec->height);
857 /* update the bitmap content */
858 SDL_UnlockYUVOverlay(vp->bmp);
859
860 vp->pts = pts;
861
862 /* now we can update the picture count */
863 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
864 is->pictq_windex = 0;
865 SDL_LockMutex(is->pictq_mutex);
866 is->pictq_size++;
867 SDL_UnlockMutex(is->pictq_mutex);
868 }
869 return 0;
870 }
871
872 /* compute the exact PTS for the picture if it is omitted in the stream */
873 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
874 {
875 double frame_delay, pts;
876
877 pts = pts1;
878
879 if (pts != 0) {
880 /* update video clock with pts, if present */
881 is->video_clock = pts;
882 } else {
883 pts = is->video_clock;
884 }
885 /* update video clock for next frame */
886 frame_delay = av_q2d(is->video_st->codec->time_base);
887 /* for MPEG2, the frame can be repeated, so we update the
888 clock accordingly */
889 if (src_frame->repeat_pict) {
890 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
891 }
892 is->video_clock += frame_delay;
893
894 #if defined(DEBUG_SYNC) && 0
895 {
896 int ftype;
897 if (src_frame->pict_type == FF_B_TYPE)
898 ftype = 'B';
899 else if (src_frame->pict_type == FF_I_TYPE)
900 ftype = 'I';
901 else
902 ftype = 'P';
903 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
904 ftype, pts, pts1);
905 }
906 #endif
907 return queue_picture(is, src_frame, pts);
908 }
909
910 static int video_thread(void *arg)
911 {
912 VideoState *is = arg;
913 AVPacket pkt1, *pkt = &pkt1;
914 int len1, got_picture;
915 AVFrame *frame= avcodec_alloc_frame();
916 double pts;
917
918 for(;;) {
919 while (is->paused && !is->videoq.abort_request) {
920 SDL_Delay(10);
921 }
922 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
923 break;
924 /* NOTE: ipts is the PTS of the _first_ picture beginning in
925 this packet, if any */
926 pts = 0;
927 if (pkt->dts != AV_NOPTS_VALUE)
928 pts = av_q2d(is->video_st->time_base)*pkt->dts;
929
930 SDL_LockMutex(is->video_decoder_mutex);
931 len1 = avcodec_decode_video(is->video_st->codec,
932 frame, &got_picture,
933 pkt->data, pkt->size);
934 SDL_UnlockMutex(is->video_decoder_mutex);
935 // if (len1 < 0)
936 // break;
937 if (got_picture) {
938 if (output_picture2(is, frame, pts) < 0)
939 goto the_end;
940 }
941 av_free_packet(pkt);
942 if (step)
943 if (cur_stream)
944 stream_pause(cur_stream);
945 }
946 the_end:
947 av_free(frame);
948 return 0;
949 }
950
951 /* copy samples for viewing in editor window */
952 static void update_sample_display(VideoState *is, short *samples, int samples_size)
953 {
954 int size, len, channels;
955
956 channels = is->audio_st->codec->channels;
957
958 size = samples_size / sizeof(short);
959 while (size > 0) {
960 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
961 if (len > size)
962 len = size;
963 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
964 samples += len;
965 is->sample_array_index += len;
966 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
967 is->sample_array_index = 0;
968 size -= len;
969 }
970 }
971
972 /* return the new audio buffer size (samples can be added or deleted
973 to get better sync if video or external master clock) */
974 static int synchronize_audio(VideoState *is, short *samples,
975 int samples_size1, double pts)
976 {
977 int n, samples_size;
978 double ref_clock;
979
980 n = 2 * is->audio_st->codec->channels;
981 samples_size = samples_size1;
982
983 /* if not master, then we try to remove or add samples to correct the clock */
984 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
985 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
986 double diff, avg_diff;
987 int wanted_size, min_size, max_size, nb_samples;
988
989 ref_clock = get_master_clock(is);
990 diff = get_audio_clock(is) - ref_clock;
991
992 if (diff < AV_NOSYNC_THRESHOLD) {
993 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
994 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
995 /* not enough measures to have a correct estimate */
996 is->audio_diff_avg_count++;
997 } else {
998 /* estimate the A-V difference */
999 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1000
1001 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1002 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1003 nb_samples = samples_size / n;
1004
1005 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1006 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1007 if (wanted_size < min_size)
1008 wanted_size = min_size;
1009 else if (wanted_size > max_size)
1010 wanted_size = max_size;
1011
1012 /* add or remove samples to correction the synchro */
1013 if (wanted_size < samples_size) {
1014 /* remove samples */
1015 samples_size = wanted_size;
1016 } else if (wanted_size > samples_size) {
1017 uint8_t *samples_end, *q;
1018 int nb;
1019
1020 /* add samples */
1021 nb = (samples_size - wanted_size);
1022 samples_end = (uint8_t *)samples + samples_size - n;
1023 q = samples_end + n;
1024 while (nb > 0) {
1025 memcpy(q, samples_end, n);
1026 q += n;
1027 nb -= n;
1028 }
1029 samples_size = wanted_size;
1030 }
1031 }
1032 #if 0
1033 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1034 diff, avg_diff, samples_size - samples_size1,
1035 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1036 #endif
1037 }
1038 } else {
1039 /* too big difference : may be initial PTS errors, so
1040 reset A-V filter */
1041 is->audio_diff_avg_count = 0;
1042 is->audio_diff_cum = 0;
1043 }
1044 }
1045
1046 return samples_size;
1047 }
1048
1049 /* decode one audio frame and returns its uncompressed size */
1050 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1051 {
1052 AVPacket *pkt = &is->audio_pkt;
1053 int n, len1, data_size;
1054 double pts;
1055
1056 for(;;) {
1057 /* NOTE: the audio packet can contain several frames */
1058 while (is->audio_pkt_size > 0) {
1059 SDL_LockMutex(is->audio_decoder_mutex);
1060 len1 = avcodec_decode_audio(is->audio_st->codec,
1061 (int16_t *)audio_buf, &data_size,
1062 is->audio_pkt_data, is->audio_pkt_size);
1063 SDL_UnlockMutex(is->audio_decoder_mutex);
1064 if (len1 < 0) {
1065 /* if error, we skip the frame */
1066 is->audio_pkt_size = 0;
1067 break;
1068 }
1069
1070 is->audio_pkt_data += len1;
1071 is->audio_pkt_size -= len1;
1072 if (data_size <= 0)
1073 continue;
1074 /* if no pts, then compute it */
1075 pts = is->audio_clock;
1076 *pts_ptr = pts;
1077 n = 2 * is->audio_st->codec->channels;
1078 is->audio_clock += (double)data_size /
1079 (double)(n * is->audio_st->codec->sample_rate);
1080 #if defined(DEBUG_SYNC)
1081 {
1082 static double last_clock;
1083 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1084 is->audio_clock - last_clock,
1085 is->audio_clock, pts);
1086 last_clock = is->audio_clock;
1087 }
1088 #endif
1089 return data_size;
1090 }
1091
1092 /* free the current packet */
1093 if (pkt->data)
1094 av_free_packet(pkt);
1095
1096 if (is->paused || is->audioq.abort_request) {
1097 return -1;
1098 }
1099
1100 /* read next packet */
1101 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1102 return -1;
1103 is->audio_pkt_data = pkt->data;
1104 is->audio_pkt_size = pkt->size;
1105
1106 /* if update the audio clock with the pts */
1107 if (pkt->pts != AV_NOPTS_VALUE) {
1108 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1109 }
1110 }
1111 }
1112
1113 /* get the current audio output buffer size, in samples. With SDL, we
1114 cannot have a precise information */
1115 static int audio_write_get_buf_size(VideoState *is)
1116 {
1117 return is->audio_hw_buf_size - is->audio_buf_index;
1118 }
1119
1120
1121 /* prepare a new audio buffer */
1122 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1123 {
1124 VideoState *is = opaque;
1125 int audio_size, len1;
1126 double pts;
1127
1128 audio_callback_time = av_gettime();
1129
1130 while (len > 0) {
1131 if (is->audio_buf_index >= is->audio_buf_size) {
1132 audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1133 if (audio_size < 0) {
1134 /* if error, just output silence */
1135 is->audio_buf_size = 1024;
1136 memset(is->audio_buf, 0, is->audio_buf_size);
1137 } else {
1138 if (is->show_audio)
1139 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1140 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1141 pts);
1142 is->audio_buf_size = audio_size;
1143 }
1144 is->audio_buf_index = 0;
1145 }
1146 len1 = is->audio_buf_size - is->audio_buf_index;
1147 if (len1 > len)
1148 len1 = len;
1149 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1150 len -= len1;
1151 stream += len1;
1152 is->audio_buf_index += len1;
1153 }
1154 }
1155
1156
1157 /* open a given stream. Return 0 if OK */
1158 static int stream_component_open(VideoState *is, int stream_index)
1159 {
1160 AVFormatContext *ic = is->ic;
1161 AVCodecContext *enc;
1162 AVCodec *codec;
1163 SDL_AudioSpec wanted_spec, spec;
1164
1165 if (stream_index < 0 || stream_index >= ic->nb_streams)
1166 return -1;
1167 enc = ic->streams[stream_index]->codec;
1168
1169 /* prepare audio output */
1170 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1171 wanted_spec.freq = enc->sample_rate;
1172 wanted_spec.format = AUDIO_S16SYS;
1173 /* hack for AC3. XXX: suppress that */
1174 if (enc->channels > 2)
1175 enc->channels = 2;
1176 wanted_spec.channels = enc->channels;
1177 wanted_spec.silence = 0;
1178 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1179 wanted_spec.callback = sdl_audio_callback;
1180 wanted_spec.userdata = is;
1181 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1182 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1183 return -1;
1184 }
1185 is->audio_hw_buf_size = spec.size;
1186 }
1187
1188 codec = avcodec_find_decoder(enc->codec_id);
1189 enc->debug_mv = debug_mv;
1190 enc->debug = debug;
1191 if(debug)
1192 av_log_set_level(AV_LOG_DEBUG);
1193 enc->workaround_bugs = workaround_bugs;
1194 enc->lowres = lowres;
1195 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1196 enc->idct_algo= idct;
1197 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1198 enc->skip_frame= skip_frame;
1199 enc->skip_idct= skip_idct;
1200 enc->skip_loop_filter= skip_loop_filter;
1201 enc->error_resilience= error_resilience;
1202 enc->error_concealment= error_concealment;
1203 if (!codec ||
1204 avcodec_open(enc, codec) < 0)
1205 return -1;
1206 #if defined(HAVE_THREADS)
1207 if(thread_count>1)
1208 avcodec_thread_init(enc, thread_count);
1209 #endif
1210 enc->thread_count= thread_count;
1211 switch(enc->codec_type) {
1212 case CODEC_TYPE_AUDIO:
1213 is->audio_stream = stream_index;
1214 is->audio_st = ic->streams[stream_index];
1215 is->audio_buf_size = 0;
1216 is->audio_buf_index = 0;
1217
1218 /* init averaging filter */
1219 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1220 is->audio_diff_avg_count = 0;
1221 /* since we do not have a precise anough audio fifo fullness,
1222 we correct audio sync only if larger than this threshold */
1223 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1224
1225 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1226 packet_queue_init(&is->audioq);
1227 SDL_PauseAudio(0);
1228 break;
1229 case CODEC_TYPE_VIDEO:
1230 is->video_stream = stream_index;
1231 is->video_st = ic->streams[stream_index];
1232
1233 is->frame_last_delay = 40e-3;
1234 is->frame_timer = (double)av_gettime() / 1000000.0;
1235 is->video_current_pts_time = av_gettime();
1236
1237 packet_queue_init(&is->videoq);
1238 is->video_tid = SDL_CreateThread(video_thread, is);
1239 break;
1240 default:
1241 break;
1242 }
1243 return 0;
1244 }
1245
1246 static void stream_component_close(VideoState *is, int stream_index)
1247 {
1248 AVFormatContext *ic = is->ic;
1249 AVCodecContext *enc;
1250
1251 enc = ic->streams[stream_index]->codec;
1252
1253 switch(enc->codec_type) {
1254 case CODEC_TYPE_AUDIO:
1255 packet_queue_abort(&is->audioq);
1256
1257 SDL_CloseAudio();
1258
1259 packet_queue_end(&is->audioq);
1260 break;
1261 case CODEC_TYPE_VIDEO:
1262 packet_queue_abort(&is->videoq);
1263
1264 /* note: we also signal this mutex to make sure we deblock the
1265 video thread in all cases */
1266 SDL_LockMutex(is->pictq_mutex);
1267 SDL_CondSignal(is->pictq_cond);
1268 SDL_UnlockMutex(is->pictq_mutex);
1269
1270 SDL_WaitThread(is->video_tid, NULL);
1271
1272 packet_queue_end(&is->videoq);
1273 break;
1274 default:
1275 break;
1276 }
1277
1278 avcodec_close(enc);
1279 switch(enc->codec_type) {
1280 case CODEC_TYPE_AUDIO:
1281 is->audio_st = NULL;
1282 is->audio_stream = -1;
1283 break;
1284 case CODEC_TYPE_VIDEO:
1285 is->video_st = NULL;
1286 is->video_stream = -1;
1287 break;
1288 default:
1289 break;
1290 }
1291 }
1292
1293 void dump_stream_info(AVFormatContext *s)
1294 {
1295 if (s->track != 0)
1296 fprintf(stderr, "Track: %d\n", s->track);
1297 if (s->title[0] != '\0')
1298 fprintf(stderr, "Title: %s\n", s->title);
1299 if (s->author[0] != '\0')
1300 fprintf(stderr, "Author: %s\n", s->author);
1301 if (s->album[0] != '\0')
1302 fprintf(stderr, "Album: %s\n", s->album);
1303 if (s->year != 0)
1304 fprintf(stderr, "Year: %d\n", s->year);
1305 if (s->genre[0] != '\0')
1306 fprintf(stderr, "Genre: %s\n", s->genre);
1307 }
1308
1309 /* since we have only one decoding thread, we can use a global
1310 variable instead of a thread local variable */
1311 static VideoState *global_video_state;
1312
1313 static int decode_interrupt_cb(void)
1314 {
1315 return (global_video_state && global_video_state->abort_request);
1316 }
1317
1318 /* this thread gets the stream from the disk or the network */
1319 static int decode_thread(void *arg)
1320 {
1321 VideoState *is = arg;
1322 AVFormatContext *ic;
1323 int err, i, ret, video_index, audio_index, use_play;
1324 AVPacket pkt1, *pkt = &pkt1;
1325 AVFormatParameters params, *ap = &params;
1326
1327 video_index = -1;
1328 audio_index = -1;
1329 is->video_stream = -1;
1330 is->audio_stream = -1;
1331
1332 global_video_state = is;
1333 url_set_interrupt_cb(decode_interrupt_cb);
1334
1335 memset(ap, 0, sizeof(*ap));
1336 ap->image_format = image_format;
1337 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1338 stream */
1339
1340 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1341 if (err < 0) {
1342 print_error(is->filename, err);
1343 ret = -1;
1344 goto fail;
1345 }
1346 is->ic = ic;
1347 #ifdef CONFIG_NETWORK
1348 use_play = (ic->iformat == &rtsp_demux);
1349 #else
1350 use_play = 0;
1351 #endif
1352 if (!use_play) {
1353 err = av_find_stream_info(ic);
1354 if (err < 0) {
1355 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1356 ret = -1;
1357 goto fail;
1358 }
1359 ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe shouldnt use url_feof() to test for the end
1360 }
1361
1362 /* if seeking requested, we execute it */
1363 if (start_time != AV_NOPTS_VALUE) {
1364 int64_t timestamp;
1365
1366 timestamp = start_time;
1367 /* add the stream start time */
1368 if (ic->start_time != AV_NOPTS_VALUE)
1369 timestamp += ic->start_time;
1370 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1371 if (ret < 0) {
1372 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1373 is->filename, (double)timestamp / AV_TIME_BASE);
1374 }
1375 }
1376
1377 /* now we can begin to play (RTSP stream only) */
1378 av_read_play(ic);
1379
1380 if (use_play) {
1381 err = av_find_stream_info(ic);
1382 if (err < 0) {
1383 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1384 ret = -1;
1385 goto fail;
1386 }
1387 }
1388
1389 for(i = 0; i < ic->nb_streams; i++) {
1390 AVCodecContext *enc = ic->streams[i]->codec;
1391 switch(enc->codec_type) {
1392 case CODEC_TYPE_AUDIO:
1393 if (audio_index < 0 && !audio_disable)
1394 audio_index = i;
1395 break;
1396 case CODEC_TYPE_VIDEO:
1397 if (video_index < 0 && !video_disable)
1398 video_index = i;
1399 break;
1400 default:
1401 break;
1402 }
1403 }
1404 if (show_status) {
1405 dump_format(ic, 0, is->filename, 0);
1406 dump_stream_info(ic);
1407 }
1408
1409 /* open the streams */
1410 if (audio_index >= 0) {
1411 stream_component_open(is, audio_index);
1412 }
1413
1414 if (video_index >= 0) {
1415 stream_component_open(is, video_index);
1416 } else {
1417 if (!display_disable)
1418 is->show_audio = 1;
1419 }
1420
1421 if (is->video_stream < 0 && is->audio_stream < 0) {
1422 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1423 ret = -1;
1424 goto fail;
1425 }
1426
1427 for(;;) {
1428 if (is->abort_request)
1429 break;
1430 #ifdef CONFIG_NETWORK
1431 if (is->paused != is->last_paused) {
1432 is->last_paused = is->paused;
1433 if (is->paused)
1434 av_read_pause(ic);
1435 else
1436 av_read_play(ic);
1437 }
1438 if (is->paused && ic->iformat == &rtsp_demux) {
1439 /* wait 10 ms to avoid trying to get another packet */
1440 /* XXX: horrible */
1441 SDL_Delay(10);
1442 continue;
1443 }
1444 #endif
1445 if (is->seek_req) {
1446 /* XXX: must lock decoder threads */
1447 SDL_LockMutex(is->video_decoder_mutex);
1448 SDL_LockMutex(is->audio_decoder_mutex);
1449 ret = av_seek_frame(is->ic, -1, is->seek_pos, is->seek_flags);
1450 if (ret < 0) {
1451 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1452 }else{
1453 if (is->audio_stream >= 0) {
1454 packet_queue_flush(&is->audioq);
1455 }
1456 if (is->video_stream >= 0) {
1457 packet_queue_flush(&is->videoq);
1458 avcodec_flush_buffers(ic->streams[video_index]->codec);
1459 }
1460 }
1461 SDL_UnlockMutex(is->audio_decoder_mutex);
1462 SDL_UnlockMutex(is->video_decoder_mutex);
1463 is->seek_req = 0;
1464 }
1465
1466 /* if the queue are full, no need to read more */
1467 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1468 is->videoq.size > MAX_VIDEOQ_SIZE ||
1469 url_feof(&ic->pb)) {
1470 /* wait 10 ms */
1471 SDL_Delay(10);
1472 continue;
1473 }
1474 ret = av_read_frame(ic, pkt);
1475 if (ret < 0) {
1476 if (url_ferror(&ic->pb) == 0) {
1477 SDL_Delay(100); /* wait for user event */
1478 continue;
1479 } else
1480 break;
1481 }
1482 if (pkt->stream_index == is->audio_stream) {
1483 packet_queue_put(&is->audioq, pkt);
1484 } else if (pkt->stream_index == is->video_stream) {
1485 packet_queue_put(&is->videoq, pkt);
1486 } else {
1487 av_free_packet(pkt);
1488 }
1489 }
1490 /* wait until the end */
1491 while (!is->abort_request) {
1492 SDL_Delay(100);
1493 }
1494
1495 ret = 0;
1496 fail:
1497 /* disable interrupting */
1498 global_video_state = NULL;
1499
1500 /* close each stream */
1501 if (is->audio_stream >= 0)
1502 stream_component_close(is, is->audio_stream);
1503 if (is->video_stream >= 0)
1504 stream_component_close(is, is->video_stream);
1505 if (is->ic) {
1506 av_close_input_file(is->ic);
1507 is->ic = NULL; /* safety */
1508 }
1509 url_set_interrupt_cb(NULL);
1510
1511 if (ret != 0) {
1512 SDL_Event event;
1513
1514 event.type = FF_QUIT_EVENT;
1515 event.user.data1 = is;
1516 SDL_PushEvent(&event);
1517 }
1518 return 0;
1519 }
1520
1521 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1522 {
1523 VideoState *is;
1524
1525 is = av_mallocz(sizeof(VideoState));
1526 if (!is)
1527 return NULL;
1528 pstrcpy(is->filename, sizeof(is->filename), filename);
1529 is->iformat = iformat;
1530 if (screen) {
1531 is->width = screen->w;
1532 is->height = screen->h;
1533 }
1534 is->ytop = 0;
1535 is->xleft = 0;
1536
1537 /* start video display */
1538 is->pictq_mutex = SDL_CreateMutex();
1539 is->pictq_cond = SDL_CreateCond();
1540
1541 is->audio_decoder_mutex = SDL_CreateMutex();
1542 is->video_decoder_mutex = SDL_CreateMutex();
1543
1544 /* add the refresh timer to draw the picture */
1545 schedule_refresh(is, 40);
1546
1547 is->av_sync_type = av_sync_type;
1548 is->parse_tid = SDL_CreateThread(decode_thread, is);
1549 if (!is->parse_tid) {
1550 av_free(is);
1551 return NULL;
1552 }
1553 return is;
1554 }
1555
1556 static void stream_close(VideoState *is)
1557 {
1558 VideoPicture *vp;
1559 int i;
1560 /* XXX: use a special url_shutdown call to abort parse cleanly */
1561 is->abort_request = 1;
1562 SDL_WaitThread(is->parse_tid, NULL);
1563
1564 /* free all pictures */
1565 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1566 vp = &is->pictq[i];
1567 if (vp->bmp) {
1568 SDL_FreeYUVOverlay(vp->bmp);
1569 vp->bmp = NULL;
1570 }
1571 }
1572 SDL_DestroyMutex(is->pictq_mutex);
1573 SDL_DestroyCond(is->pictq_cond);
1574 SDL_DestroyMutex(is->audio_decoder_mutex);
1575 SDL_DestroyMutex(is->video_decoder_mutex);
1576 }
1577
1578 void stream_cycle_channel(VideoState *is, int codec_type)
1579 {
1580 AVFormatContext *ic = is->ic;
1581 int start_index, stream_index;
1582 AVStream *st;
1583
1584 if (codec_type == CODEC_TYPE_VIDEO)
1585 start_index = is->video_stream;
1586 else
1587 start_index = is->audio_stream;
1588 if (start_index < 0)
1589 return;
1590 stream_index = start_index;
1591 for(;;) {
1592 if (++stream_index >= is->ic->nb_streams)
1593 stream_index = 0;
1594 if (stream_index == start_index)
1595 return;
1596 st = ic->streams[stream_index];
1597 if (st->codec->codec_type == codec_type) {
1598 /* check that parameters are OK */
1599 switch(codec_type) {
1600 case CODEC_TYPE_AUDIO:
1601 if (st->codec->sample_rate != 0 &&
1602 st->codec->channels != 0)
1603 goto the_end;
1604 break;
1605 case CODEC_TYPE_VIDEO:
1606 goto the_end;
1607 default:
1608 break;
1609 }
1610 }
1611 }
1612 the_end:
1613 stream_component_close(is, start_index);
1614 stream_component_open(is, stream_index);
1615 }
1616
1617
1618 void toggle_full_screen(void)
1619 {
1620 int w, h, flags;
1621 is_full_screen = !is_full_screen;
1622 if (!fs_screen_width) {
1623 /* use default SDL method */
1624 SDL_WM_ToggleFullScreen(screen);
1625 } else {
1626 /* use the recorded resolution */
1627 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1628 if (is_full_screen) {
1629 w = fs_screen_width;
1630 h = fs_screen_height;
1631 flags |= SDL_FULLSCREEN;
1632 } else {
1633 w = screen_width;
1634 h = screen_height;
1635 flags |= SDL_RESIZABLE;
1636 }
1637 screen = SDL_SetVideoMode(w, h, 0, flags);
1638 cur_stream->width = w;
1639 cur_stream->height = h;
1640 }
1641 }
1642
1643 void toggle_pause(void)
1644 {
1645 if (cur_stream)
1646 stream_pause(cur_stream);
1647 step = 0;
1648 }
1649
1650 void step_to_next_frame(void)
1651 {
1652 if (cur_stream) {
1653 if (cur_stream->paused)
1654 cur_stream->paused=0;
1655 cur_stream->video_current_pts = get_video_clock(cur_stream);
1656 }
1657 step = 1;
1658 }
1659
1660 void do_exit(void)
1661 {
1662 if (cur_stream) {
1663 stream_close(cur_stream);
1664 cur_stream = NULL;
1665 }
1666 if (show_status)
1667 printf("\n");
1668 SDL_Quit();
1669 exit(0);
1670 }
1671
1672 void toggle_audio_display(void)
1673 {
1674 if (cur_stream) {
1675 cur_stream->show_audio = !cur_stream->show_audio;
1676 }
1677 }
1678
1679 /* handle an event sent by the GUI */
1680 void event_loop(void)
1681 {
1682 SDL_Event event;
1683 double incr, pos, frac;
1684
1685 for(;;) {
1686 SDL_WaitEvent(&event);
1687 switch(event.type) {
1688 case SDL_KEYDOWN:
1689 switch(event.key.keysym.sym) {
1690 case SDLK_ESCAPE:
1691 case SDLK_q:
1692 do_exit();
1693 break;
1694 case SDLK_f:
1695 toggle_full_screen();
1696 break;
1697 case SDLK_p:
1698 case SDLK_SPACE:
1699 toggle_pause();
1700 break;
1701 case SDLK_s: //S: Step to next frame
1702 step_to_next_frame();
1703 break;
1704 case SDLK_a:
1705 if (cur_stream)
1706 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1707 break;
1708 case SDLK_v:
1709 if (cur_stream)
1710 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1711 break;
1712 case SDLK_w:
1713 toggle_audio_display();
1714 break;
1715 case SDLK_LEFT:
1716 incr = -10.0;
1717 goto do_seek;
1718 case SDLK_RIGHT:
1719 incr = 10.0;
1720 goto do_seek;
1721 case SDLK_UP:
1722 incr = 60.0;
1723 goto do_seek;
1724 case SDLK_DOWN:
1725 incr = -60.0;
1726 do_seek:
1727 if (cur_stream) {
1728 pos = get_master_clock(cur_stream);
1729 pos += incr;
1730 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
1731 }
1732 break;
1733 default:
1734 break;
1735 }
1736 break;
1737 case SDL_MOUSEBUTTONDOWN:
1738 if (cur_stream) {
1739 int ns, hh, mm, ss;
1740 int tns, thh, tmm, tss;
1741 tns = cur_stream->ic->duration/1000000LL;
1742 thh = tns/3600;
1743 tmm = (tns%3600)/60;
1744 tss = (tns%60);
1745 frac = (double)event.button.x/(double)cur_stream->width;
1746 ns = frac*tns;
1747 hh = ns/3600;
1748 mm = (ns%3600)/60;
1749 ss = (ns%60);
1750 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
1751 hh, mm, ss, thh, tmm, tss);
1752 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
1753 }
1754 break;
1755 case SDL_VIDEORESIZE:
1756 if (cur_stream) {
1757 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1758 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1759 cur_stream->width = event.resize.w;
1760 cur_stream->height = event.resize.h;
1761 }
1762 break;
1763 case SDL_QUIT:
1764 case FF_QUIT_EVENT:
1765 do_exit();
1766 break;
1767 case FF_ALLOC_EVENT:
1768 alloc_picture(event.user.data1);
1769 break;
1770 case FF_REFRESH_EVENT:
1771 video_refresh_timer(event.user.data1);
1772 break;
1773 default:
1774 break;
1775 }
1776 }
1777 }
1778
1779 void opt_width(const char *arg)
1780 {
1781 screen_width = atoi(arg);
1782 }
1783
1784 void opt_height(const char *arg)
1785 {
1786 screen_height = atoi(arg);
1787 }
1788
1789 static void opt_format(const char *arg)
1790 {
1791 file_iformat = av_find_input_format(arg);
1792 if (!file_iformat) {
1793 fprintf(stderr, "Unknown input format: %s\n", arg);
1794 exit(1);
1795 }
1796 }
1797
1798 static void opt_image_format(const char *arg)
1799 {
1800 AVImageFormat *f;
1801
1802 for(f = first_image_format; f != NULL; f = f->next) {
1803 if (!strcmp(arg, f->name))
1804 break;
1805 }
1806 if (!f) {
1807 fprintf(stderr, "Unknown image format: '%s'\n", arg);
1808 exit(1);
1809 }
1810 image_format = f;
1811 }
1812
1813 #ifdef CONFIG_NETWORK
1814 void opt_rtp_tcp(void)
1815 {
1816 /* only tcp protocol */
1817 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1818 }
1819 #endif
1820
1821 void opt_sync(const char *arg)
1822 {
1823 if (!strcmp(arg, "audio"))
1824 av_sync_type = AV_SYNC_AUDIO_MASTER;
1825 else if (!strcmp(arg, "video"))
1826 av_sync_type = AV_SYNC_VIDEO_MASTER;
1827 else if (!strcmp(arg, "ext"))
1828 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1829 else
1830 show_help();
1831 }
1832
1833 void opt_seek(const char *arg)
1834 {
1835 start_time = parse_date(arg, 1);
1836 }
1837
1838 static void opt_debug(const char *arg)
1839 {
1840 debug = atoi(arg);
1841 }
1842
1843 static void opt_vismv(const char *arg)
1844 {
1845 debug_mv = atoi(arg);
1846 }
1847
1848 static void opt_thread_count(const char *arg)
1849 {
1850 thread_count= atoi(arg);
1851 #if !defined(HAVE_THREADS)
1852 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1853 #endif
1854 }
1855
1856 const OptionDef options[] = {
1857 { "h", 0, {(void*)show_help}, "show help" },
1858 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1859 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1860 #if 0
1861 /* disabled as SDL/X11 does not support it correctly on application launch */
1862 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1863 #endif
1864 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1865 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1866 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1867 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1868 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1869 { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1870 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1871 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1872 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
1873 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1874 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
1875 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
1876 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
1877 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
1878 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
1879 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
1880 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_resilience}, "set error detection threshold (0-4)", "threshold" },
1881 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
1882 #ifdef CONFIG_NETWORK
1883 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1884 #endif
1885 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1886 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1887 { NULL, },
1888 };
1889
1890 void show_help(void)
1891 {
1892 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1893 "usage: ffplay [options] input_file\n"
1894 "Simple media player\n");
1895 printf("\n");
1896 show_help_options(options, "Main options:\n",
1897 OPT_EXPERT, 0);
1898 show_help_options(options, "\nAdvanced options:\n",
1899 OPT_EXPERT, OPT_EXPERT);
1900 printf("\nWhile playing:\n"
1901 "q, ESC quit\n"
1902 "f toggle full screen\n"
1903 "p, SPC pause\n"
1904 "a cycle audio channel\n"
1905 "v cycle video channel\n"
1906 "w show audio waves\n"
1907 "left/right seek backward/forward 10 seconds\n"
1908 "down/up seek backward/forward 1 minute\n"
1909 "mouse click seek to percentage in file corresponding to fraction of width\n"
1910 );
1911 exit(1);
1912 }
1913
1914 void parse_arg_file(const char *filename)
1915 {
1916 if (!strcmp(filename, "-"))
1917 filename = "pipe:";
1918 input_filename = filename;
1919 }
1920
1921 /* Called from the main */
1922 int main(int argc, char **argv)
1923 {
1924 int flags, w, h;
1925
1926 /* register all codecs, demux and protocols */
1927 av_register_all();
1928
1929 #ifdef CONFIG_OS2
1930 MorphToPM(); // Morph the VIO application to a PM one to be able to use Win* functions
1931
1932 // Make stdout and stderr unbuffered
1933 setbuf( stdout, NULL );
1934 setbuf( stderr, NULL );
1935 #endif
1936
1937 parse_options(argc, argv, options);
1938
1939 if (!input_filename)
1940 show_help();
1941
1942 if (display_disable) {
1943 video_disable = 1;
1944 }
1945 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1946 #ifndef CONFIG_WIN32
1947 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1948 #endif
1949 if (SDL_Init (flags)) {
1950 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1951 exit(1);
1952 }
1953
1954 if (!display_disable) {
1955 #ifdef HAVE_X11
1956 /* save the screen resolution... SDL should allow full screen
1957 by resizing the window */
1958 {
1959 Display *dpy;
1960 dpy = XOpenDisplay(NULL);
1961 if (dpy) {
1962 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1963 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1964 XCloseDisplay(dpy);
1965 }
1966 }
1967 #endif
1968 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1969 if (is_full_screen && fs_screen_width) {
1970 w = fs_screen_width;
1971 h = fs_screen_height;
1972 flags |= SDL_FULLSCREEN;
1973 } else {
1974 w = screen_width;
1975 h = screen_height;
1976 flags |= SDL_RESIZABLE;
1977 }
1978 screen = SDL_SetVideoMode(w, h, 0, flags);
1979 if (!screen) {
1980 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1981 exit(1);
1982 }
1983 SDL_WM_SetCaption("FFplay", "FFplay");
1984 }
1985
1986 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1987 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1988 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1989 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1990
1991 cur_stream = stream_open(input_filename, file_iformat);
1992
1993 event_loop();
1994
1995 /* never returns */
1996
1997 return 0;
1998 }