add hdv2 fourcc to MPEG2 codec mapping
[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
198 /* current context */
199 static int is_full_screen;
200 static VideoState *cur_stream;
201 static int64_t audio_callback_time;
202
203 #define FF_ALLOC_EVENT (SDL_USEREVENT)
204 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
205 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
206
207 SDL_Surface *screen;
208
209 /* packet queue handling */
210 static void packet_queue_init(PacketQueue *q)
211 {
212 memset(q, 0, sizeof(PacketQueue));
213 q->mutex = SDL_CreateMutex();
214 q->cond = SDL_CreateCond();
215 }
216
217 static void packet_queue_flush(PacketQueue *q)
218 {
219 AVPacketList *pkt, *pkt1;
220
221 SDL_LockMutex(q->mutex);
222 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
223 pkt1 = pkt->next;
224 av_free_packet(&pkt->pkt);
225 av_freep(&pkt);
226 }
227 q->last_pkt = NULL;
228 q->first_pkt = NULL;
229 q->nb_packets = 0;
230 q->size = 0;
231 SDL_UnlockMutex(q->mutex);
232 }
233
234 static void packet_queue_end(PacketQueue *q)
235 {
236 packet_queue_flush(q);
237 SDL_DestroyMutex(q->mutex);
238 SDL_DestroyCond(q->cond);
239 }
240
241 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
242 {
243 AVPacketList *pkt1;
244
245 /* duplicate the packet */
246 if (av_dup_packet(pkt) < 0)
247 return -1;
248
249 pkt1 = av_malloc(sizeof(AVPacketList));
250 if (!pkt1)
251 return -1;
252 pkt1->pkt = *pkt;
253 pkt1->next = NULL;
254
255
256 SDL_LockMutex(q->mutex);
257
258 if (!q->last_pkt)
259
260 q->first_pkt = pkt1;
261 else
262 q->last_pkt->next = pkt1;
263 q->last_pkt = pkt1;
264 q->nb_packets++;
265 q->size += pkt1->pkt.size;
266 /* XXX: should duplicate packet data in DV case */
267 SDL_CondSignal(q->cond);
268
269 SDL_UnlockMutex(q->mutex);
270 return 0;
271 }
272
273 static void packet_queue_abort(PacketQueue *q)
274 {
275 SDL_LockMutex(q->mutex);
276
277 q->abort_request = 1;
278
279 SDL_CondSignal(q->cond);
280
281 SDL_UnlockMutex(q->mutex);
282 }
283
284 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
285 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
286 {
287 AVPacketList *pkt1;
288 int ret;
289
290 SDL_LockMutex(q->mutex);
291
292 for(;;) {
293 if (q->abort_request) {
294 ret = -1;
295 break;
296 }
297
298 pkt1 = q->first_pkt;
299 if (pkt1) {
300 q->first_pkt = pkt1->next;
301 if (!q->first_pkt)
302 q->last_pkt = NULL;
303 q->nb_packets--;
304 q->size -= pkt1->pkt.size;
305 *pkt = pkt1->pkt;
306 av_free(pkt1);
307 ret = 1;
308 break;
309 } else if (!block) {
310 ret = 0;
311 break;
312 } else {
313 SDL_CondWait(q->cond, q->mutex);
314 }
315 }
316 SDL_UnlockMutex(q->mutex);
317 return ret;
318 }
319
320 static inline void fill_rectangle(SDL_Surface *screen,
321 int x, int y, int w, int h, int color)
322 {
323 SDL_Rect rect;
324 rect.x = x;
325 rect.y = y;
326 rect.w = w;
327 rect.h = h;
328 SDL_FillRect(screen, &rect, color);
329 }
330
331 #if 0
332 /* draw only the border of a rectangle */
333 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
334 {
335 int w1, w2, h1, h2;
336
337 /* fill the background */
338 w1 = x;
339 if (w1 < 0)
340 w1 = 0;
341 w2 = s->width - (x + w);
342 if (w2 < 0)
343 w2 = 0;
344 h1 = y;
345 if (h1 < 0)
346 h1 = 0;
347 h2 = s->height - (y + h);
348 if (h2 < 0)
349 h2 = 0;
350 fill_rectangle(screen,
351 s->xleft, s->ytop,
352 w1, s->height,
353 color);
354 fill_rectangle(screen,
355 s->xleft + s->width - w2, s->ytop,
356 w2, s->height,
357 color);
358 fill_rectangle(screen,
359 s->xleft + w1, s->ytop,
360 s->width - w1 - w2, h1,
361 color);
362 fill_rectangle(screen,
363 s->xleft + w1, s->ytop + s->height - h2,
364 s->width - w1 - w2, h2,
365 color);
366 }
367 #endif
368
369 static void video_image_display(VideoState *is)
370 {
371 VideoPicture *vp;
372 float aspect_ratio;
373 int width, height, x, y;
374 SDL_Rect rect;
375
376 vp = &is->pictq[is->pictq_rindex];
377 if (vp->bmp) {
378 /* XXX: use variable in the frame */
379 if (is->video_st->codec.sample_aspect_ratio.num == 0)
380 aspect_ratio = 0;
381 else
382 aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
383 * is->video_st->codec.width / is->video_st->codec.height;;
384 if (aspect_ratio <= 0.0)
385 aspect_ratio = (float)is->video_st->codec.width /
386 (float)is->video_st->codec.height;
387 /* if an active format is indicated, then it overrides the
388 mpeg format */
389 #if 0
390 if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
391 is->dtg_active_format = is->video_st->codec.dtg_active_format;
392 printf("dtg_active_format=%d\n", is->dtg_active_format);
393 }
394 #endif
395 #if 0
396 switch(is->video_st->codec.dtg_active_format) {
397 case FF_DTG_AFD_SAME:
398 default:
399 /* nothing to do */
400 break;
401 case FF_DTG_AFD_4_3:
402 aspect_ratio = 4.0 / 3.0;
403 break;
404 case FF_DTG_AFD_16_9:
405 aspect_ratio = 16.0 / 9.0;
406 break;
407 case FF_DTG_AFD_14_9:
408 aspect_ratio = 14.0 / 9.0;
409 break;
410 case FF_DTG_AFD_4_3_SP_14_9:
411 aspect_ratio = 14.0 / 9.0;
412 break;
413 case FF_DTG_AFD_16_9_SP_14_9:
414 aspect_ratio = 14.0 / 9.0;
415 break;
416 case FF_DTG_AFD_SP_4_3:
417 aspect_ratio = 4.0 / 3.0;
418 break;
419 }
420 #endif
421
422 /* XXX: we suppose the screen has a 1.0 pixel ratio */
423 height = is->height;
424 width = ((int)rint(height * aspect_ratio)) & -3;
425 if (width > is->width) {
426 width = is->width;
427 height = ((int)rint(width / aspect_ratio)) & -3;
428 }
429 x = (is->width - width) / 2;
430 y = (is->height - height) / 2;
431 if (!is->no_background) {
432 /* fill the background */
433 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
434 } else {
435 is->no_background = 0;
436 }
437 rect.x = is->xleft + x;
438 rect.y = is->xleft + y;
439 rect.w = width;
440 rect.h = height;
441 SDL_DisplayYUVOverlay(vp->bmp, &rect);
442 } else {
443 #if 0
444 fill_rectangle(screen,
445 is->xleft, is->ytop, is->width, is->height,
446 QERGB(0x00, 0x00, 0x00));
447 #endif
448 }
449 }
450
451 static inline int compute_mod(int a, int b)
452 {
453 a = a % b;
454 if (a >= 0)
455 return a;
456 else
457 return a + b;
458 }
459
460 static void video_audio_display(VideoState *s)
461 {
462 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
463 int ch, channels, h, h2, bgcolor, fgcolor;
464 int16_t time_diff;
465
466 /* compute display index : center on currently output samples */
467 channels = s->audio_st->codec.channels;
468 nb_display_channels = channels;
469 if (!s->paused) {
470 n = 2 * channels;
471 delay = audio_write_get_buf_size(s);
472 delay /= n;
473
474 /* to be more precise, we take into account the time spent since
475 the last buffer computation */
476 if (audio_callback_time) {
477 time_diff = av_gettime() - audio_callback_time;
478 delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
479 }
480
481 delay -= s->width / 2;
482 if (delay < s->width)
483 delay = s->width;
484 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
485 s->last_i_start = i_start;
486 } else {
487 i_start = s->last_i_start;
488 }
489
490 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
491 fill_rectangle(screen,
492 s->xleft, s->ytop, s->width, s->height,
493 bgcolor);
494
495 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
496
497 /* total height for one channel */
498 h = s->height / nb_display_channels;
499 /* graph height / 2 */
500 h2 = (h * 9) / 20;
501 for(ch = 0;ch < nb_display_channels; ch++) {
502 i = i_start + ch;
503 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
504 for(x = 0; x < s->width; x++) {
505 y = (s->sample_array[i] * h2) >> 15;
506 if (y < 0) {
507 y = -y;
508 ys = y1 - y;
509 } else {
510 ys = y1;
511 }
512 fill_rectangle(screen,
513 s->xleft + x, ys, 1, y,
514 fgcolor);
515 i += channels;
516 if (i >= SAMPLE_ARRAY_SIZE)
517 i -= SAMPLE_ARRAY_SIZE;
518 }
519 }
520
521 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
522
523 for(ch = 1;ch < nb_display_channels; ch++) {
524 y = s->ytop + ch * h;
525 fill_rectangle(screen,
526 s->xleft, y, s->width, 1,
527 fgcolor);
528 }
529 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
530 }
531
532 /* display the current picture, if any */
533 static void video_display(VideoState *is)
534 {
535 if (is->audio_st && is->show_audio)
536 video_audio_display(is);
537 else if (is->video_st)
538 video_image_display(is);
539 }
540
541 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
542 {
543 SDL_Event event;
544 event.type = FF_REFRESH_EVENT;
545 event.user.data1 = opaque;
546 SDL_PushEvent(&event);
547 return 0; /* 0 means stop timer */
548 }
549
550 /* schedule a video refresh in 'delay' ms */
551 static void schedule_refresh(VideoState *is, int delay)
552 {
553 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
554 }
555
556 /* get the current audio clock value */
557 static double get_audio_clock(VideoState *is)
558 {
559 double pts;
560 int hw_buf_size, bytes_per_sec;
561 pts = is->audio_clock;
562 hw_buf_size = audio_write_get_buf_size(is);
563 bytes_per_sec = 0;
564 if (is->audio_st) {
565 bytes_per_sec = is->audio_st->codec.sample_rate *
566 2 * is->audio_st->codec.channels;
567 }
568 if (bytes_per_sec)
569 pts -= (double)hw_buf_size / bytes_per_sec;
570 return pts;
571 }
572
573 /* get the current video clock value */
574 static double get_video_clock(VideoState *is)
575 {
576 double delta;
577 if (is->paused) {
578 delta = 0;
579 } else {
580 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
581 }
582 return is->video_current_pts + delta;
583 }
584
585 /* get the current external clock value */
586 static double get_external_clock(VideoState *is)
587 {
588 int64_t ti;
589 ti = av_gettime();
590 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
591 }
592
593 /* get the current master clock value */
594 static double get_master_clock(VideoState *is)
595 {
596 double val;
597
598 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
599 if (is->video_st)
600 val = get_video_clock(is);
601 else
602 val = get_audio_clock(is);
603 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
604 if (is->audio_st)
605 val = get_audio_clock(is);
606 else
607 val = get_video_clock(is);
608 } else {
609 val = get_external_clock(is);
610 }
611 return val;
612 }
613
614 /* seek in the stream */
615 static void stream_seek(VideoState *is, int64_t pos, int rel)
616 {
617 if (!is->seek_req) {
618 is->seek_pos = pos;
619 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
620 is->seek_req = 1;
621 }
622 }
623
624 /* pause or resume the video */
625 static void stream_pause(VideoState *is)
626 {
627 is->paused = !is->paused;
628 if (is->paused) {
629 is->video_current_pts = get_video_clock(is);
630 }
631 }
632
633 /* called to display each frame */
634 static void video_refresh_timer(void *opaque)
635 {
636 VideoState *is = opaque;
637 VideoPicture *vp;
638 double actual_delay, delay, sync_threshold, ref_clock, diff;
639
640
641 if (is->video_st) {
642 if (is->pictq_size == 0) {
643 /* if no picture, need to wait */
644 schedule_refresh(is, 1);
645 } else {
646 /* dequeue the picture */
647 vp = &is->pictq[is->pictq_rindex];
648
649 /* update current video pts */
650 is->video_current_pts = vp->pts;
651 is->video_current_pts_time = av_gettime();
652
653 /* compute nominal delay */
654 delay = vp->pts - is->frame_last_pts;
655 if (delay <= 0 || delay >= 1.0) {
656 /* if incorrect delay, use previous one */
657 delay = is->frame_last_delay;
658 }
659 is->frame_last_delay = delay;
660 is->frame_last_pts = vp->pts;
661
662 /* update delay to follow master synchronisation source */
663 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
664 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
665 /* if video is slave, we try to correct big delays by
666 duplicating or deleting a frame */
667 ref_clock = get_master_clock(is);
668 diff = vp->pts - ref_clock;
669
670 /* skip or repeat frame. We take into account the
671 delay to compute the threshold. I still don't know
672 if it is the best guess */
673 sync_threshold = AV_SYNC_THRESHOLD;
674 if (delay > sync_threshold)
675 sync_threshold = delay;
676 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
677 if (diff <= -sync_threshold)
678 delay = 0;
679 else if (diff >= sync_threshold)
680 delay = 2 * delay;
681 }
682 }
683
684 is->frame_timer += delay;
685 /* compute the REAL delay (we need to do that to avoid
686 long term errors */
687 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
688 if (actual_delay < 0.010) {
689 /* XXX: should skip picture */
690 actual_delay = 0.010;
691 }
692 /* launch timer for next picture */
693 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
694
695 #if defined(DEBUG_SYNC)
696 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
697 delay, actual_delay, vp->pts, -diff);
698 #endif
699
700 /* display picture */
701 video_display(is);
702
703 /* update queue size and signal for next picture */
704 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
705 is->pictq_rindex = 0;
706
707 SDL_LockMutex(is->pictq_mutex);
708 is->pictq_size--;
709 SDL_CondSignal(is->pictq_cond);
710 SDL_UnlockMutex(is->pictq_mutex);
711 }
712 } else if (is->audio_st) {
713 /* draw the next audio frame */
714
715 schedule_refresh(is, 40);
716
717 /* if only audio stream, then display the audio bars (better
718 than nothing, just to test the implementation */
719
720 /* display picture */
721 video_display(is);
722 } else {
723 schedule_refresh(is, 100);
724 }
725 if (show_status) {
726 static int64_t last_time;
727 int64_t cur_time;
728 int aqsize, vqsize;
729 double av_diff;
730
731 cur_time = av_gettime();
732 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
733 aqsize = 0;
734 vqsize = 0;
735 if (is->audio_st)
736 aqsize = is->audioq.size;
737 if (is->video_st)
738 vqsize = is->videoq.size;
739 av_diff = 0;
740 if (is->audio_st && is->video_st)
741 av_diff = get_audio_clock(is) - get_video_clock(is);
742 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
743 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
744 fflush(stdout);
745 last_time = cur_time;
746 }
747 }
748 }
749
750 /* allocate a picture (needs to do that in main thread to avoid
751 potential locking problems */
752 static void alloc_picture(void *opaque)
753 {
754 VideoState *is = opaque;
755 VideoPicture *vp;
756
757 vp = &is->pictq[is->pictq_windex];
758
759 if (vp->bmp)
760 SDL_FreeYUVOverlay(vp->bmp);
761
762 #if 0
763 /* XXX: use generic function */
764 /* XXX: disable overlay if no hardware acceleration or if RGB format */
765 switch(is->video_st->codec.pix_fmt) {
766 case PIX_FMT_YUV420P:
767 case PIX_FMT_YUV422P:
768 case PIX_FMT_YUV444P:
769 case PIX_FMT_YUV422:
770 case PIX_FMT_YUV410P:
771 case PIX_FMT_YUV411P:
772 is_yuv = 1;
773 break;
774 default:
775 is_yuv = 0;
776 break;
777 }
778 #endif
779 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
780 is->video_st->codec.height,
781 SDL_YV12_OVERLAY,
782 screen);
783 vp->width = is->video_st->codec.width;
784 vp->height = is->video_st->codec.height;
785
786 SDL_LockMutex(is->pictq_mutex);
787 vp->allocated = 1;
788 SDL_CondSignal(is->pictq_cond);
789 SDL_UnlockMutex(is->pictq_mutex);
790 }
791
792 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
793 {
794 VideoPicture *vp;
795 int dst_pix_fmt;
796 AVPicture pict;
797
798 /* wait until we have space to put a new picture */
799 SDL_LockMutex(is->pictq_mutex);
800 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
801 !is->videoq.abort_request) {
802 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
803 }
804 SDL_UnlockMutex(is->pictq_mutex);
805
806 if (is->videoq.abort_request)
807 return -1;
808
809 vp = &is->pictq[is->pictq_windex];
810
811 /* alloc or resize hardware picture buffer */
812 if (!vp->bmp ||
813 vp->width != is->video_st->codec.width ||
814 vp->height != is->video_st->codec.height) {
815 SDL_Event event;
816
817 vp->allocated = 0;
818
819 /* the allocation must be done in the main thread to avoid
820 locking problems */
821 event.type = FF_ALLOC_EVENT;
822 event.user.data1 = is;
823 SDL_PushEvent(&event);
824
825 /* wait until the picture is allocated */
826 SDL_LockMutex(is->pictq_mutex);
827 while (!vp->allocated && !is->videoq.abort_request) {
828 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
829 }
830 SDL_UnlockMutex(is->pictq_mutex);
831
832 if (is->videoq.abort_request)
833 return -1;
834 }
835
836 /* if the frame is not skipped, then display it */
837 if (vp->bmp) {
838 /* get a pointer on the bitmap */
839 SDL_LockYUVOverlay (vp->bmp);
840
841 dst_pix_fmt = PIX_FMT_YUV420P;
842 pict.data[0] = vp->bmp->pixels[0];
843 pict.data[1] = vp->bmp->pixels[2];
844 pict.data[2] = vp->bmp->pixels[1];
845
846 pict.linesize[0] = vp->bmp->pitches[0];
847 pict.linesize[1] = vp->bmp->pitches[2];
848 pict.linesize[2] = vp->bmp->pitches[1];
849 img_convert(&pict, dst_pix_fmt,
850 (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
851 is->video_st->codec.width, is->video_st->codec.height);
852 /* update the bitmap content */
853 SDL_UnlockYUVOverlay(vp->bmp);
854
855 vp->pts = pts;
856
857 /* now we can update the picture count */
858 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
859 is->pictq_windex = 0;
860 SDL_LockMutex(is->pictq_mutex);
861 is->pictq_size++;
862 SDL_UnlockMutex(is->pictq_mutex);
863 }
864 return 0;
865 }
866
867 /* compute the exact PTS for the picture if it is omitted in the stream */
868 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
869 {
870 double frame_delay, pts;
871
872 pts = pts1;
873
874 if (pts != 0) {
875 /* update video clock with pts, if present */
876 is->video_clock = pts;
877 } else {
878 pts = is->video_clock;
879 }
880 /* update video clock for next frame */
881 frame_delay = av_q2d(is->video_st->codec.time_base);
882 /* for MPEG2, the frame can be repeated, so we update the
883 clock accordingly */
884 if (src_frame->repeat_pict) {
885 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
886 }
887 is->video_clock += frame_delay;
888
889 #if defined(DEBUG_SYNC) && 0
890 {
891 int ftype;
892 if (src_frame->pict_type == FF_B_TYPE)
893 ftype = 'B';
894 else if (src_frame->pict_type == FF_I_TYPE)
895 ftype = 'I';
896 else
897 ftype = 'P';
898 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
899 ftype, pts, pts1);
900 }
901 #endif
902 return queue_picture(is, src_frame, pts);
903 }
904
905 static int video_thread(void *arg)
906 {
907 VideoState *is = arg;
908 AVPacket pkt1, *pkt = &pkt1;
909 int len1, got_picture;
910 AVFrame *frame= avcodec_alloc_frame();
911 double pts;
912
913 for(;;) {
914 while (is->paused && !is->videoq.abort_request) {
915 SDL_Delay(10);
916 }
917 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
918 break;
919 /* NOTE: ipts is the PTS of the _first_ picture beginning in
920 this packet, if any */
921 pts = 0;
922 if (pkt->dts != AV_NOPTS_VALUE)
923 pts = av_q2d(is->video_st->time_base)*pkt->dts;
924
925 SDL_LockMutex(is->video_decoder_mutex);
926 len1 = avcodec_decode_video(&is->video_st->codec,
927 frame, &got_picture,
928 pkt->data, pkt->size);
929 SDL_UnlockMutex(is->video_decoder_mutex);
930 // if (len1 < 0)
931 // break;
932 if (got_picture) {
933 if (output_picture2(is, frame, pts) < 0)
934 goto the_end;
935 }
936 av_free_packet(pkt);
937 if (step)
938 if (cur_stream)
939 stream_pause(cur_stream);
940 }
941 the_end:
942 av_free(frame);
943 return 0;
944 }
945
946 /* copy samples for viewing in editor window */
947 static void update_sample_display(VideoState *is, short *samples, int samples_size)
948 {
949 int size, len, channels;
950
951 channels = is->audio_st->codec.channels;
952
953 size = samples_size / sizeof(short);
954 while (size > 0) {
955 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
956 if (len > size)
957 len = size;
958 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
959 samples += len;
960 is->sample_array_index += len;
961 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
962 is->sample_array_index = 0;
963 size -= len;
964 }
965 }
966
967 /* return the new audio buffer size (samples can be added or deleted
968 to get better sync if video or external master clock) */
969 static int synchronize_audio(VideoState *is, short *samples,
970 int samples_size1, double pts)
971 {
972 int n, samples_size;
973 double ref_clock;
974
975 n = 2 * is->audio_st->codec.channels;
976 samples_size = samples_size1;
977
978 /* if not master, then we try to remove or add samples to correct the clock */
979 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
980 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
981 double diff, avg_diff;
982 int wanted_size, min_size, max_size, nb_samples;
983
984 ref_clock = get_master_clock(is);
985 diff = get_audio_clock(is) - ref_clock;
986
987 if (diff < AV_NOSYNC_THRESHOLD) {
988 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
989 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
990 /* not enough measures to have a correct estimate */
991 is->audio_diff_avg_count++;
992 } else {
993 /* estimate the A-V difference */
994 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
995
996 if (fabs(avg_diff) >= is->audio_diff_threshold) {
997 wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
998 nb_samples = samples_size / n;
999
1000 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1001 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1002 if (wanted_size < min_size)
1003 wanted_size = min_size;
1004 else if (wanted_size > max_size)
1005 wanted_size = max_size;
1006
1007 /* add or remove samples to correction the synchro */
1008 if (wanted_size < samples_size) {
1009 /* remove samples */
1010 samples_size = wanted_size;
1011 } else if (wanted_size > samples_size) {
1012 uint8_t *samples_end, *q;
1013 int nb;
1014
1015 /* add samples */
1016 nb = (samples_size - wanted_size);
1017 samples_end = (uint8_t *)samples + samples_size - n;
1018 q = samples_end + n;
1019 while (nb > 0) {
1020 memcpy(q, samples_end, n);
1021 q += n;
1022 nb -= n;
1023 }
1024 samples_size = wanted_size;
1025 }
1026 }
1027 #if 0
1028 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1029 diff, avg_diff, samples_size - samples_size1,
1030 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1031 #endif
1032 }
1033 } else {
1034 /* too big difference : may be initial PTS errors, so
1035 reset A-V filter */
1036 is->audio_diff_avg_count = 0;
1037 is->audio_diff_cum = 0;
1038 }
1039 }
1040
1041 return samples_size;
1042 }
1043
1044 /* decode one audio frame and returns its uncompressed size */
1045 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1046 {
1047 AVPacket *pkt = &is->audio_pkt;
1048 int n, len1, data_size;
1049 double pts;
1050
1051 for(;;) {
1052 /* NOTE: the audio packet can contain several frames */
1053 while (is->audio_pkt_size > 0) {
1054 SDL_LockMutex(is->audio_decoder_mutex);
1055 len1 = avcodec_decode_audio(&is->audio_st->codec,
1056 (int16_t *)audio_buf, &data_size,
1057 is->audio_pkt_data, is->audio_pkt_size);
1058 SDL_UnlockMutex(is->audio_decoder_mutex);
1059 if (len1 < 0) {
1060 /* if error, we skip the frame */
1061 is->audio_pkt_size = 0;
1062 break;
1063 }
1064
1065 is->audio_pkt_data += len1;
1066 is->audio_pkt_size -= len1;
1067 if (data_size <= 0)
1068 continue;
1069 /* if no pts, then compute it */
1070 pts = is->audio_clock;
1071 *pts_ptr = pts;
1072 n = 2 * is->audio_st->codec.channels;
1073 is->audio_clock += (double)data_size /
1074 (double)(n * is->audio_st->codec.sample_rate);
1075 #if defined(DEBUG_SYNC)
1076 {
1077 static double last_clock;
1078 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1079 is->audio_clock - last_clock,
1080 is->audio_clock, pts);
1081 last_clock = is->audio_clock;
1082 }
1083 #endif
1084 return data_size;
1085 }
1086
1087 /* free the current packet */
1088 if (pkt->data)
1089 av_free_packet(pkt);
1090
1091 if (is->paused || is->audioq.abort_request) {
1092 return -1;
1093 }
1094
1095 /* read next packet */
1096 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1097 return -1;
1098 is->audio_pkt_data = pkt->data;
1099 is->audio_pkt_size = pkt->size;
1100
1101 /* if update the audio clock with the pts */
1102 if (pkt->pts != AV_NOPTS_VALUE) {
1103 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1104 }
1105 }
1106 }
1107
1108 /* get the current audio output buffer size, in samples. With SDL, we
1109 cannot have a precise information */
1110 static int audio_write_get_buf_size(VideoState *is)
1111 {
1112 return is->audio_hw_buf_size - is->audio_buf_index;
1113 }
1114
1115
1116 /* prepare a new audio buffer */
1117 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1118 {
1119 VideoState *is = opaque;
1120 int audio_size, len1;
1121 double pts;
1122
1123 audio_callback_time = av_gettime();
1124
1125 while (len > 0) {
1126 if (is->audio_buf_index >= is->audio_buf_size) {
1127 audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1128 if (audio_size < 0) {
1129 /* if error, just output silence */
1130 is->audio_buf_size = 1024;
1131 memset(is->audio_buf, 0, is->audio_buf_size);
1132 } else {
1133 if (is->show_audio)
1134 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1135 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1136 pts);
1137 is->audio_buf_size = audio_size;
1138 }
1139 is->audio_buf_index = 0;
1140 }
1141 len1 = is->audio_buf_size - is->audio_buf_index;
1142 if (len1 > len)
1143 len1 = len;
1144 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1145 len -= len1;
1146 stream += len1;
1147 is->audio_buf_index += len1;
1148 }
1149 }
1150
1151
1152 /* open a given stream. Return 0 if OK */
1153 static int stream_component_open(VideoState *is, int stream_index)
1154 {
1155 AVFormatContext *ic = is->ic;
1156 AVCodecContext *enc;
1157 AVCodec *codec;
1158 SDL_AudioSpec wanted_spec, spec;
1159
1160 if (stream_index < 0 || stream_index >= ic->nb_streams)
1161 return -1;
1162 enc = &ic->streams[stream_index]->codec;
1163
1164 /* prepare audio output */
1165 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1166 wanted_spec.freq = enc->sample_rate;
1167 wanted_spec.format = AUDIO_S16SYS;
1168 /* hack for AC3. XXX: suppress that */
1169 if (enc->channels > 2)
1170 enc->channels = 2;
1171 wanted_spec.channels = enc->channels;
1172 wanted_spec.silence = 0;
1173 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1174 wanted_spec.callback = sdl_audio_callback;
1175 wanted_spec.userdata = is;
1176 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1177 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1178 return -1;
1179 }
1180 is->audio_hw_buf_size = spec.size;
1181 }
1182
1183 codec = avcodec_find_decoder(enc->codec_id);
1184 enc->debug_mv = debug_mv;
1185 enc->debug = debug;
1186 if(debug)
1187 av_log_set_level(AV_LOG_DEBUG);
1188 enc->workaround_bugs = workaround_bugs;
1189 enc->lowres = lowres;
1190 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1191 enc->idct_algo= idct;
1192 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1193 if (!codec ||
1194 avcodec_open(enc, codec) < 0)
1195 return -1;
1196 #if defined(HAVE_THREADS)
1197 if(thread_count>1)
1198 avcodec_thread_init(enc, thread_count);
1199 #endif
1200 enc->thread_count= thread_count;
1201 switch(enc->codec_type) {
1202 case CODEC_TYPE_AUDIO:
1203 is->audio_stream = stream_index;
1204 is->audio_st = ic->streams[stream_index];
1205 is->audio_buf_size = 0;
1206 is->audio_buf_index = 0;
1207
1208 /* init averaging filter */
1209 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1210 is->audio_diff_avg_count = 0;
1211 /* since we do not have a precise anough audio fifo fullness,
1212 we correct audio sync only if larger than this threshold */
1213 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1214
1215 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1216 packet_queue_init(&is->audioq);
1217 SDL_PauseAudio(0);
1218 break;
1219 case CODEC_TYPE_VIDEO:
1220 is->video_stream = stream_index;
1221 is->video_st = ic->streams[stream_index];
1222
1223 is->frame_last_delay = 40e-3;
1224 is->frame_timer = (double)av_gettime() / 1000000.0;
1225 is->video_current_pts_time = av_gettime();
1226
1227 packet_queue_init(&is->videoq);
1228 is->video_tid = SDL_CreateThread(video_thread, is);
1229 break;
1230 default:
1231 break;
1232 }
1233 return 0;
1234 }
1235
1236 static void stream_component_close(VideoState *is, int stream_index)
1237 {
1238 AVFormatContext *ic = is->ic;
1239 AVCodecContext *enc;
1240
1241 enc = &ic->streams[stream_index]->codec;
1242
1243 switch(enc->codec_type) {
1244 case CODEC_TYPE_AUDIO:
1245 packet_queue_abort(&is->audioq);
1246
1247 SDL_CloseAudio();
1248
1249 packet_queue_end(&is->audioq);
1250 break;
1251 case CODEC_TYPE_VIDEO:
1252 packet_queue_abort(&is->videoq);
1253
1254 /* note: we also signal this mutex to make sure we deblock the
1255 video thread in all cases */
1256 SDL_LockMutex(is->pictq_mutex);
1257 SDL_CondSignal(is->pictq_cond);
1258 SDL_UnlockMutex(is->pictq_mutex);
1259
1260 SDL_WaitThread(is->video_tid, NULL);
1261
1262 packet_queue_end(&is->videoq);
1263 break;
1264 default:
1265 break;
1266 }
1267
1268 avcodec_close(enc);
1269 switch(enc->codec_type) {
1270 case CODEC_TYPE_AUDIO:
1271 is->audio_st = NULL;
1272 is->audio_stream = -1;
1273 break;
1274 case CODEC_TYPE_VIDEO:
1275 is->video_st = NULL;
1276 is->video_stream = -1;
1277 break;
1278 default:
1279 break;
1280 }
1281 }
1282
1283 void dump_stream_info(AVFormatContext *s)
1284 {
1285 if (s->track != 0)
1286 fprintf(stderr, "Track: %d\n", s->track);
1287 if (s->title[0] != '\0')
1288 fprintf(stderr, "Title: %s\n", s->title);
1289 if (s->author[0] != '\0')
1290 fprintf(stderr, "Author: %s\n", s->author);
1291 if (s->album[0] != '\0')
1292 fprintf(stderr, "Album: %s\n", s->album);
1293 if (s->year != 0)
1294 fprintf(stderr, "Year: %d\n", s->year);
1295 if (s->genre[0] != '\0')
1296 fprintf(stderr, "Genre: %s\n", s->genre);
1297 }
1298
1299 /* since we have only one decoding thread, we can use a global
1300 variable instead of a thread local variable */
1301 static VideoState *global_video_state;
1302
1303 static int decode_interrupt_cb(void)
1304 {
1305 return (global_video_state && global_video_state->abort_request);
1306 }
1307
1308 /* this thread gets the stream from the disk or the network */
1309 static int decode_thread(void *arg)
1310 {
1311 VideoState *is = arg;
1312 AVFormatContext *ic;
1313 int err, i, ret, video_index, audio_index, use_play;
1314 AVPacket pkt1, *pkt = &pkt1;
1315 AVFormatParameters params, *ap = &params;
1316
1317 video_index = -1;
1318 audio_index = -1;
1319 is->video_stream = -1;
1320 is->audio_stream = -1;
1321
1322 global_video_state = is;
1323 url_set_interrupt_cb(decode_interrupt_cb);
1324
1325 memset(ap, 0, sizeof(*ap));
1326 ap->image_format = image_format;
1327 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1328 stream */
1329
1330 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1331 if (err < 0) {
1332 print_error(is->filename, err);
1333 ret = -1;
1334 goto fail;
1335 }
1336 is->ic = ic;
1337 #ifdef CONFIG_NETWORK
1338 use_play = (ic->iformat == &rtsp_demux);
1339 #else
1340 use_play = 0;
1341 #endif
1342 if (!use_play) {
1343 err = av_find_stream_info(ic);
1344 if (err < 0) {
1345 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1346 ret = -1;
1347 goto fail;
1348 }
1349 ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe shouldnt use url_feof() to test for the end
1350 }
1351
1352 /* if seeking requested, we execute it */
1353 if (start_time != AV_NOPTS_VALUE) {
1354 int64_t timestamp;
1355
1356 timestamp = start_time;
1357 /* add the stream start time */
1358 if (ic->start_time != AV_NOPTS_VALUE)
1359 timestamp += ic->start_time;
1360 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1361 if (ret < 0) {
1362 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1363 is->filename, (double)timestamp / AV_TIME_BASE);
1364 }
1365 }
1366
1367 /* now we can begin to play (RTSP stream only) */
1368 av_read_play(ic);
1369
1370 if (use_play) {
1371 err = av_find_stream_info(ic);
1372 if (err < 0) {
1373 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1374 ret = -1;
1375 goto fail;
1376 }
1377 }
1378
1379 for(i = 0; i < ic->nb_streams; i++) {
1380 AVCodecContext *enc = &ic->streams[i]->codec;
1381 switch(enc->codec_type) {
1382 case CODEC_TYPE_AUDIO:
1383 if (audio_index < 0 && !audio_disable)
1384 audio_index = i;
1385 break;
1386 case CODEC_TYPE_VIDEO:
1387 if (video_index < 0 && !video_disable)
1388 video_index = i;
1389 break;
1390 default:
1391 break;
1392 }
1393 }
1394 if (show_status) {
1395 dump_format(ic, 0, is->filename, 0);
1396 dump_stream_info(ic);
1397 }
1398
1399 /* open the streams */
1400 if (audio_index >= 0) {
1401 stream_component_open(is, audio_index);
1402 }
1403
1404 if (video_index >= 0) {
1405 stream_component_open(is, video_index);
1406 } else {
1407 if (!display_disable)
1408 is->show_audio = 1;
1409 }
1410
1411 if (is->video_stream < 0 && is->audio_stream < 0) {
1412 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1413 ret = -1;
1414 goto fail;
1415 }
1416
1417 for(;;) {
1418 if (is->abort_request)
1419 break;
1420 #ifdef CONFIG_NETWORK
1421 if (is->paused != is->last_paused) {
1422 is->last_paused = is->paused;
1423 if (is->paused)
1424 av_read_pause(ic);
1425 else
1426 av_read_play(ic);
1427 }
1428 if (is->paused && ic->iformat == &rtsp_demux) {
1429 /* wait 10 ms to avoid trying to get another packet */
1430 /* XXX: horrible */
1431 SDL_Delay(10);
1432 continue;
1433 }
1434 #endif
1435 if (is->seek_req) {
1436 /* XXX: must lock decoder threads */
1437 SDL_LockMutex(is->video_decoder_mutex);
1438 SDL_LockMutex(is->audio_decoder_mutex);
1439 ret = av_seek_frame(is->ic, -1, is->seek_pos, is->seek_flags);
1440 if (ret < 0) {
1441 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1442 }else{
1443 if (is->audio_stream >= 0) {
1444 packet_queue_flush(&is->audioq);
1445 }
1446 if (is->video_stream >= 0) {
1447 packet_queue_flush(&is->videoq);
1448 avcodec_flush_buffers(&ic->streams[video_index]->codec);
1449 }
1450 }
1451 SDL_UnlockMutex(is->audio_decoder_mutex);
1452 SDL_UnlockMutex(is->video_decoder_mutex);
1453 is->seek_req = 0;
1454 }
1455
1456 /* if the queue are full, no need to read more */
1457 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1458 is->videoq.size > MAX_VIDEOQ_SIZE ||
1459 url_feof(&ic->pb)) {
1460 /* wait 10 ms */
1461 SDL_Delay(10);
1462 continue;
1463 }
1464 ret = av_read_frame(ic, pkt);
1465 if (ret < 0) {
1466 if (url_ferror(&ic->pb) == 0) {
1467 SDL_Delay(100); /* wait for user event */
1468 continue;
1469 } else
1470 break;
1471 }
1472 if (pkt->stream_index == is->audio_stream) {
1473 packet_queue_put(&is->audioq, pkt);
1474 } else if (pkt->stream_index == is->video_stream) {
1475 packet_queue_put(&is->videoq, pkt);
1476 } else {
1477 av_free_packet(pkt);
1478 }
1479 }
1480 /* wait until the end */
1481 while (!is->abort_request) {
1482 SDL_Delay(100);
1483 }
1484
1485 ret = 0;
1486 fail:
1487 /* disable interrupting */
1488 global_video_state = NULL;
1489
1490 /* close each stream */
1491 if (is->audio_stream >= 0)
1492 stream_component_close(is, is->audio_stream);
1493 if (is->video_stream >= 0)
1494 stream_component_close(is, is->video_stream);
1495 if (is->ic) {
1496 av_close_input_file(is->ic);
1497 is->ic = NULL; /* safety */
1498 }
1499 url_set_interrupt_cb(NULL);
1500
1501 if (ret != 0) {
1502 SDL_Event event;
1503
1504 event.type = FF_QUIT_EVENT;
1505 event.user.data1 = is;
1506 SDL_PushEvent(&event);
1507 }
1508 return 0;
1509 }
1510
1511 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1512 {
1513 VideoState *is;
1514
1515 is = av_mallocz(sizeof(VideoState));
1516 if (!is)
1517 return NULL;
1518 pstrcpy(is->filename, sizeof(is->filename), filename);
1519 is->iformat = iformat;
1520 if (screen) {
1521 is->width = screen->w;
1522 is->height = screen->h;
1523 }
1524 is->ytop = 0;
1525 is->xleft = 0;
1526
1527 /* start video display */
1528 is->pictq_mutex = SDL_CreateMutex();
1529 is->pictq_cond = SDL_CreateCond();
1530
1531 is->audio_decoder_mutex = SDL_CreateMutex();
1532 is->video_decoder_mutex = SDL_CreateMutex();
1533
1534 /* add the refresh timer to draw the picture */
1535 schedule_refresh(is, 40);
1536
1537 is->av_sync_type = av_sync_type;
1538 is->parse_tid = SDL_CreateThread(decode_thread, is);
1539 if (!is->parse_tid) {
1540 av_free(is);
1541 return NULL;
1542 }
1543 return is;
1544 }
1545
1546 static void stream_close(VideoState *is)
1547 {
1548 VideoPicture *vp;
1549 int i;
1550 /* XXX: use a special url_shutdown call to abort parse cleanly */
1551 is->abort_request = 1;
1552 SDL_WaitThread(is->parse_tid, NULL);
1553
1554 /* free all pictures */
1555 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1556 vp = &is->pictq[i];
1557 if (vp->bmp) {
1558 SDL_FreeYUVOverlay(vp->bmp);
1559 vp->bmp = NULL;
1560 }
1561 }
1562 SDL_DestroyMutex(is->pictq_mutex);
1563 SDL_DestroyCond(is->pictq_cond);
1564 SDL_DestroyMutex(is->audio_decoder_mutex);
1565 SDL_DestroyMutex(is->video_decoder_mutex);
1566 }
1567
1568 void stream_cycle_channel(VideoState *is, int codec_type)
1569 {
1570 AVFormatContext *ic = is->ic;
1571 int start_index, stream_index;
1572 AVStream *st;
1573
1574 if (codec_type == CODEC_TYPE_VIDEO)
1575 start_index = is->video_stream;
1576 else
1577 start_index = is->audio_stream;
1578 if (start_index < 0)
1579 return;
1580 stream_index = start_index;
1581 for(;;) {
1582 if (++stream_index >= is->ic->nb_streams)
1583 stream_index = 0;
1584 if (stream_index == start_index)
1585 return;
1586 st = ic->streams[stream_index];
1587 if (st->codec.codec_type == codec_type) {
1588 /* check that parameters are OK */
1589 switch(codec_type) {
1590 case CODEC_TYPE_AUDIO:
1591 if (st->codec.sample_rate != 0 &&
1592 st->codec.channels != 0)
1593 goto the_end;
1594 break;
1595 case CODEC_TYPE_VIDEO:
1596 goto the_end;
1597 default:
1598 break;
1599 }
1600 }
1601 }
1602 the_end:
1603 stream_component_close(is, start_index);
1604 stream_component_open(is, stream_index);
1605 }
1606
1607
1608 void toggle_full_screen(void)
1609 {
1610 int w, h, flags;
1611 is_full_screen = !is_full_screen;
1612 if (!fs_screen_width) {
1613 /* use default SDL method */
1614 SDL_WM_ToggleFullScreen(screen);
1615 } else {
1616 /* use the recorded resolution */
1617 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1618 if (is_full_screen) {
1619 w = fs_screen_width;
1620 h = fs_screen_height;
1621 flags |= SDL_FULLSCREEN;
1622 } else {
1623 w = screen_width;
1624 h = screen_height;
1625 flags |= SDL_RESIZABLE;
1626 }
1627 screen = SDL_SetVideoMode(w, h, 0, flags);
1628 cur_stream->width = w;
1629 cur_stream->height = h;
1630 }
1631 }
1632
1633 void toggle_pause(void)
1634 {
1635 if (cur_stream)
1636 stream_pause(cur_stream);
1637 step = 0;
1638 }
1639
1640 void step_to_next_frame(void)
1641 {
1642 if (cur_stream) {
1643 if (cur_stream->paused)
1644 cur_stream->paused=0;
1645 cur_stream->video_current_pts = get_video_clock(cur_stream);
1646 }
1647 step = 1;
1648 }
1649
1650 void do_exit(void)
1651 {
1652 if (cur_stream) {
1653 stream_close(cur_stream);
1654 cur_stream = NULL;
1655 }
1656 if (show_status)
1657 printf("\n");
1658 SDL_Quit();
1659 exit(0);
1660 }
1661
1662 void toggle_audio_display(void)
1663 {
1664 if (cur_stream) {
1665 cur_stream->show_audio = !cur_stream->show_audio;
1666 }
1667 }
1668
1669 /* handle an event sent by the GUI */
1670 void event_loop(void)
1671 {
1672 SDL_Event event;
1673 double incr, pos, frac;
1674
1675 for(;;) {
1676 SDL_WaitEvent(&event);
1677 switch(event.type) {
1678 case SDL_KEYDOWN:
1679 switch(event.key.keysym.sym) {
1680 case SDLK_ESCAPE:
1681 case SDLK_q:
1682 do_exit();
1683 break;
1684 case SDLK_f:
1685 toggle_full_screen();
1686 break;
1687 case SDLK_p:
1688 case SDLK_SPACE:
1689 toggle_pause();
1690 break;
1691 case SDLK_s: //S: Step to next frame
1692 step_to_next_frame();
1693 break;
1694 case SDLK_a:
1695 if (cur_stream)
1696 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1697 break;
1698 case SDLK_v:
1699 if (cur_stream)
1700 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1701 break;
1702 case SDLK_w:
1703 toggle_audio_display();
1704 break;
1705 case SDLK_LEFT:
1706 incr = -10.0;
1707 goto do_seek;
1708 case SDLK_RIGHT:
1709 incr = 10.0;
1710 goto do_seek;
1711 case SDLK_UP:
1712 incr = 60.0;
1713 goto do_seek;
1714 case SDLK_DOWN:
1715 incr = -60.0;
1716 do_seek:
1717 if (cur_stream) {
1718 pos = get_master_clock(cur_stream);
1719 pos += incr;
1720 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
1721 }
1722 break;
1723 default:
1724 break;
1725 }
1726 break;
1727 case SDL_MOUSEBUTTONDOWN:
1728 if (cur_stream) {
1729 int ns, hh, mm, ss;
1730 int tns, thh, tmm, tss;
1731 tns = cur_stream->ic->duration/1000000LL;
1732 thh = tns/3600;
1733 tmm = (tns%3600)/60;
1734 tss = (tns%60);
1735 frac = (double)event.button.x/(double)cur_stream->width;
1736 ns = frac*tns;
1737 hh = ns/3600;
1738 mm = (ns%3600)/60;
1739 ss = (ns%60);
1740 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
1741 hh, mm, ss, thh, tmm, tss);
1742 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
1743 }
1744 break;
1745 case SDL_VIDEORESIZE:
1746 if (cur_stream) {
1747 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1748 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1749 cur_stream->width = event.resize.w;
1750 cur_stream->height = event.resize.h;
1751 }
1752 break;
1753 case SDL_QUIT:
1754 case FF_QUIT_EVENT:
1755 do_exit();
1756 break;
1757 case FF_ALLOC_EVENT:
1758 alloc_picture(event.user.data1);
1759 break;
1760 case FF_REFRESH_EVENT:
1761 video_refresh_timer(event.user.data1);
1762 break;
1763 default:
1764 break;
1765 }
1766 }
1767 }
1768
1769 void opt_width(const char *arg)
1770 {
1771 screen_width = atoi(arg);
1772 }
1773
1774 void opt_height(const char *arg)
1775 {
1776 screen_height = atoi(arg);
1777 }
1778
1779 static void opt_format(const char *arg)
1780 {
1781 file_iformat = av_find_input_format(arg);
1782 if (!file_iformat) {
1783 fprintf(stderr, "Unknown input format: %s\n", arg);
1784 exit(1);
1785 }
1786 }
1787
1788 static void opt_image_format(const char *arg)
1789 {
1790 AVImageFormat *f;
1791
1792 for(f = first_image_format; f != NULL; f = f->next) {
1793 if (!strcmp(arg, f->name))
1794 break;
1795 }
1796 if (!f) {
1797 fprintf(stderr, "Unknown image format: '%s'\n", arg);
1798 exit(1);
1799 }
1800 image_format = f;
1801 }
1802
1803 #ifdef CONFIG_NETWORK
1804 void opt_rtp_tcp(void)
1805 {
1806 /* only tcp protocol */
1807 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1808 }
1809 #endif
1810
1811 void opt_sync(const char *arg)
1812 {
1813 if (!strcmp(arg, "audio"))
1814 av_sync_type = AV_SYNC_AUDIO_MASTER;
1815 else if (!strcmp(arg, "video"))
1816 av_sync_type = AV_SYNC_VIDEO_MASTER;
1817 else if (!strcmp(arg, "ext"))
1818 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1819 else
1820 show_help();
1821 }
1822
1823 void opt_seek(const char *arg)
1824 {
1825 start_time = parse_date(arg, 1);
1826 }
1827
1828 static void opt_debug(const char *arg)
1829 {
1830 debug = atoi(arg);
1831 }
1832
1833 static void opt_vismv(const char *arg)
1834 {
1835 debug_mv = atoi(arg);
1836 }
1837
1838 static void opt_thread_count(const char *arg)
1839 {
1840 thread_count= atoi(arg);
1841 #if !defined(HAVE_THREADS)
1842 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1843 #endif
1844 }
1845
1846 const OptionDef options[] = {
1847 { "h", 0, {(void*)show_help}, "show help" },
1848 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1849 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1850 #if 0
1851 /* disabled as SDL/X11 does not support it correctly on application launch */
1852 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1853 #endif
1854 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1855 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1856 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1857 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1858 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1859 { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1860 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1861 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1862 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
1863 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1864 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
1865 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
1866 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
1867 #ifdef CONFIG_NETWORK
1868 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1869 #endif
1870 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1871 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1872 { NULL, },
1873 };
1874
1875 void show_help(void)
1876 {
1877 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1878 "usage: ffplay [options] input_file\n"
1879 "Simple media player\n");
1880 printf("\n");
1881 show_help_options(options, "Main options:\n",
1882 OPT_EXPERT, 0);
1883 show_help_options(options, "\nAdvanced options:\n",
1884 OPT_EXPERT, OPT_EXPERT);
1885 printf("\nWhile playing:\n"
1886 "q, ESC quit\n"
1887 "f toggle full screen\n"
1888 "p, SPC pause\n"
1889 "a cycle audio channel\n"
1890 "v cycle video channel\n"
1891 "w show audio waves\n"
1892 "left/right seek backward/forward 10 seconds\n"
1893 "down/up seek backward/forward 1 minute\n"
1894 "mouse click seek to percentage in file corresponding to fraction of width\n"
1895 );
1896 exit(1);
1897 }
1898
1899 void parse_arg_file(const char *filename)
1900 {
1901 if (!strcmp(filename, "-"))
1902 filename = "pipe:";
1903 input_filename = filename;
1904 }
1905
1906 /* Called from the main */
1907 int main(int argc, char **argv)
1908 {
1909 int flags, w, h;
1910
1911 /* register all codecs, demux and protocols */
1912 av_register_all();
1913
1914 #ifdef CONFIG_OS2
1915 MorphToPM(); // Morph the VIO application to a PM one to be able to use Win* functions
1916
1917 // Make stdout and stderr unbuffered
1918 setbuf( stdout, NULL );
1919 setbuf( stderr, NULL );
1920 #endif
1921
1922 parse_options(argc, argv, options);
1923
1924 if (!input_filename)
1925 show_help();
1926
1927 if (display_disable) {
1928 video_disable = 1;
1929 }
1930 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1931 #ifndef CONFIG_WIN32
1932 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1933 #endif
1934 if (SDL_Init (flags)) {
1935 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1936 exit(1);
1937 }
1938
1939 if (!display_disable) {
1940 #ifdef HAVE_X11
1941 /* save the screen resolution... SDL should allow full screen
1942 by resizing the window */
1943 {
1944 Display *dpy;
1945 dpy = XOpenDisplay(NULL);
1946 if (dpy) {
1947 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1948 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1949 XCloseDisplay(dpy);
1950 }
1951 }
1952 #endif
1953 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1954 if (is_full_screen && fs_screen_width) {
1955 w = fs_screen_width;
1956 h = fs_screen_height;
1957 flags |= SDL_FULLSCREEN;
1958 } else {
1959 w = screen_width;
1960 h = screen_height;
1961 flags |= SDL_RESIZABLE;
1962 }
1963 screen = SDL_SetVideoMode(w, h, 0, flags);
1964 if (!screen) {
1965 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1966 exit(1);
1967 }
1968 SDL_WM_SetCaption("FFplay", "FFplay");
1969 }
1970
1971 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1972 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1973 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1974 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1975
1976 cur_stream = stream_open(input_filename, file_iformat);
1977
1978 event_loop();
1979
1980 /* never returns */
1981
1982 return 0;
1983 }