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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
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 * 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
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
19
#define HAVE_AV_CONFIG_H
20
#include "avformat.h"
21

    
22
#include "cmdutils.h"
23

    
24
#include <SDL.h>
25
#include <SDL_thread.h>
26

    
27
#ifdef CONFIG_WIN32
28
#undef main /* We don't want SDL to override our main() */
29
#endif
30

    
31
#if defined(__linux__)
32
#define HAVE_X11
33
#endif
34

    
35
#ifdef HAVE_X11
36
#include <X11/Xlib.h>
37
#endif
38

    
39
//#define DEBUG_SYNC
40

    
41
#define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
42
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
43

    
44
/* SDL audio buffer size, in samples. Should be small to have precise
45
   A/V sync as SDL does not have hardware buffer fullness info. */
46
#define SDL_AUDIO_BUFFER_SIZE 1024
47

    
48
/* no AV sync correction is done if below the AV sync threshold */
49
#define AV_SYNC_THRESHOLD 0.01
50
/* no AV correction is done if too big error */
51
#define AV_NOSYNC_THRESHOLD 10.0
52

    
53
/* maximum audio speed change to get correct sync */
54
#define SAMPLE_CORRECTION_PERCENT_MAX 10
55

    
56
/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
57
#define AUDIO_DIFF_AVG_NB   20
58

    
59
/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
60
#define SAMPLE_ARRAY_SIZE (2*65536)
61

    
62
typedef struct PacketQueue {
63
    AVPacketList *first_pkt, *last_pkt;
64
    int nb_packets;
65
    int size;
66
    int abort_request;
67
    SDL_mutex *mutex;
68
    SDL_cond *cond;
69
} PacketQueue;
70

    
71
#define VIDEO_PICTURE_QUEUE_SIZE 1
72

    
73
typedef struct VideoPicture {
74
    double pts; /* presentation time stamp for this picture */
75
    SDL_Overlay *bmp;
76
    int width, height; /* source height & width */
77
    int allocated;
78
} VideoPicture;
79

    
80
enum {
81
    AV_SYNC_AUDIO_MASTER, /* default choice */
82
    AV_SYNC_VIDEO_MASTER,
83
    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
84
};
85

    
86
typedef struct VideoState {
87
    SDL_Thread *parse_tid;
88
    SDL_Thread *video_tid;
89
    AVInputFormat *iformat;
90
    int no_background;
91
    int abort_request;
92
    int paused;
93
    int last_paused;
94
    int seek_req;
95
    int seek_flags;
96
    int64_t seek_pos;
97
    AVFormatContext *ic;
98
    int dtg_active_format;
99

    
100
    int audio_stream;
101
    
102
    int av_sync_type;
103
    double external_clock; /* external clock base */
104
    int64_t external_clock_time;
105
    
106
    double audio_clock;
107
    double audio_diff_cum; /* used for AV difference average computation */
108
    double audio_diff_avg_coef;
109
    double audio_diff_threshold;
110
    int audio_diff_avg_count;
111
    AVStream *audio_st;
112
    PacketQueue audioq;
113
    int audio_hw_buf_size;
114
    /* samples output by the codec. we reserve more space for avsync
115
       compensation */
116
    uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]; 
117
    unsigned int audio_buf_size; /* in bytes */
118
    int audio_buf_index; /* in bytes */
119
    AVPacket audio_pkt;
120
    uint8_t *audio_pkt_data;
121
    int audio_pkt_size;
122
    
123
    int show_audio; /* if true, display audio samples */
124
    int16_t sample_array[SAMPLE_ARRAY_SIZE];
125
    int sample_array_index;
126
    int last_i_start;
127
    
128
    double frame_timer;
129
    double frame_last_pts;
130
    double frame_last_delay;
131
    double video_clock;
132
    int video_stream;
133
    AVStream *video_st;
134
    PacketQueue videoq;
135
    double video_last_P_pts; /* pts of the last P picture (needed if B
136
                                frames are present) */
137
    double video_current_pts; /* current displayed pts (different from
138
                                 video_clock if frame fifos are used) */
139
    int64_t video_current_pts_time; /* time at which we updated
140
                                       video_current_pts - used to
141
                                       have running video pts */
142
    VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
143
    int pictq_size, pictq_rindex, pictq_windex;
144
    SDL_mutex *pictq_mutex;
145
    SDL_cond *pictq_cond;
146
    
147
    //    QETimer *video_timer;
148
    char filename[1024];
149
    int width, height, xleft, ytop;
150
} VideoState;
151

    
152
void show_help(void);
153
static int audio_write_get_buf_size(VideoState *is);
154

    
155
/* options specified by the user */
156
static AVInputFormat *file_iformat;
157
static AVImageFormat *image_format;
158
static const char *input_filename;
159
static int fs_screen_width;
160
static int fs_screen_height;
161
static int screen_width = 640;
162
static int screen_height = 480;
163
static int audio_disable;
164
static int video_disable;
165
static int display_disable;
166
static int show_status;
167
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
168
static int64_t start_time = AV_NOPTS_VALUE;
169
static int debug = 0;
170
static int debug_mv = 0;
171
static int step = 0;
172
static int thread_count = 1;
173
static int workaround_bugs = 1;
174
static int fast = 0;
175
static int lowres = 0;
176
static int idct = FF_IDCT_AUTO;
177

    
178
/* current context */
179
static int is_full_screen;
180
static VideoState *cur_stream;
181
static int64_t audio_callback_time;
182

    
183
#define FF_ALLOC_EVENT   (SDL_USEREVENT)
184
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
185
#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
186

    
187
SDL_Surface *screen;
188

    
189
/* packet queue handling */
190
static void packet_queue_init(PacketQueue *q)
191
{
192
    memset(q, 0, sizeof(PacketQueue));
193
    q->mutex = SDL_CreateMutex();
194
    q->cond = SDL_CreateCond();
195
}
196

    
197
static void packet_queue_flush(PacketQueue *q)
198
{
199
    AVPacketList *pkt, *pkt1;
200

    
201
    for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
202
        pkt1 = pkt->next;
203
        av_free_packet(&pkt->pkt);
204
        av_freep(&pkt);
205
    }
206
    q->last_pkt = NULL;
207
    q->first_pkt = NULL;
208
    q->nb_packets = 0;
209
    q->size = 0;
210
}
211

    
212
static void packet_queue_end(PacketQueue *q)
213
{
214
    packet_queue_flush(q);
215
    SDL_DestroyMutex(q->mutex);
216
    SDL_DestroyCond(q->cond);
217
}
218

    
219
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
220
{
221
    AVPacketList *pkt1;
222

    
223
    /* duplicate the packet */
224
    if (av_dup_packet(pkt) < 0)
225
        return -1;
226
    
227
    pkt1 = av_malloc(sizeof(AVPacketList));
228
    if (!pkt1)
229
        return -1;
230
    pkt1->pkt = *pkt;
231
    pkt1->next = NULL;
232

    
233

    
234
    SDL_LockMutex(q->mutex);
235

    
236
    if (!q->last_pkt)
237

    
238
        q->first_pkt = pkt1;
239
    else
240
        q->last_pkt->next = pkt1;
241
    q->last_pkt = pkt1;
242
    q->nb_packets++;
243
    q->size += pkt1->pkt.size;
244
    /* XXX: should duplicate packet data in DV case */
245
    SDL_CondSignal(q->cond);
246

    
247
    SDL_UnlockMutex(q->mutex);
248
    return 0;
249
}
250

    
251
static void packet_queue_abort(PacketQueue *q)
252
{
253
    SDL_LockMutex(q->mutex);
254

    
255
    q->abort_request = 1;
256
    
257
    SDL_CondSignal(q->cond);
258

    
259
    SDL_UnlockMutex(q->mutex);
260
}
261

    
262
/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
263
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
264
{
265
    AVPacketList *pkt1;
266
    int ret;
267

    
268
    SDL_LockMutex(q->mutex);
269

    
270
    for(;;) {
271
        if (q->abort_request) {
272
            ret = -1;
273
            break;
274
        }
275
            
276
        pkt1 = q->first_pkt;
277
        if (pkt1) {
278
            q->first_pkt = pkt1->next;
279
            if (!q->first_pkt)
280
                q->last_pkt = NULL;
281
            q->nb_packets--;
282
            q->size -= pkt1->pkt.size;
283
            *pkt = pkt1->pkt;
284
            av_free(pkt1);
285
            ret = 1;
286
            break;
287
        } else if (!block) {
288
            ret = 0;
289
            break;
290
        } else {
291
            SDL_CondWait(q->cond, q->mutex);
292
        }
293
    }
294
    SDL_UnlockMutex(q->mutex);
295
    return ret;
296
}
297

    
298
static inline void fill_rectangle(SDL_Surface *screen, 
299
                                  int x, int y, int w, int h, int color)
300
{
301
    SDL_Rect rect;
302
    rect.x = x;
303
    rect.y = y;
304
    rect.w = w;
305
    rect.h = h;
306
    SDL_FillRect(screen, &rect, color);
307
}
308

    
309
#if 0
310
/* draw only the border of a rectangle */
311
void fill_border(VideoState *s, int x, int y, int w, int h, int color)
312
{
313
    int w1, w2, h1, h2;
314

315
    /* fill the background */
316
    w1 = x;
317
    if (w1 < 0)
318
        w1 = 0;
319
    w2 = s->width - (x + w);
320
    if (w2 < 0)
321
        w2 = 0;
322
    h1 = y;
323
    if (h1 < 0)
324
        h1 = 0;
325
    h2 = s->height - (y + h);
326
    if (h2 < 0)
327
        h2 = 0;
328
    fill_rectangle(screen, 
329
                   s->xleft, s->ytop, 
330
                   w1, s->height, 
331
                   color);
332
    fill_rectangle(screen, 
333
                   s->xleft + s->width - w2, s->ytop, 
334
                   w2, s->height, 
335
                   color);
336
    fill_rectangle(screen, 
337
                   s->xleft + w1, s->ytop, 
338
                   s->width - w1 - w2, h1, 
339
                   color);
340
    fill_rectangle(screen, 
341
                   s->xleft + w1, s->ytop + s->height - h2,
342
                   s->width - w1 - w2, h2,
343
                   color);
344
}
345
#endif
346

    
347
static void video_image_display(VideoState *is)
348
{
349
    VideoPicture *vp;
350
    float aspect_ratio;
351
    int width, height, x, y;
352
    SDL_Rect rect;
353

    
354
    vp = &is->pictq[is->pictq_rindex];
355
    if (vp->bmp) {
356
        /* XXX: use variable in the frame */
357
        if (is->video_st->codec.sample_aspect_ratio.num == 0) 
358
            aspect_ratio = 0;
359
        else
360
            aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio) 
361
                * is->video_st->codec.width / is->video_st->codec.height;;
362
        if (aspect_ratio <= 0.0)
363
            aspect_ratio = (float)is->video_st->codec.width / 
364
                (float)is->video_st->codec.height;
365
        /* if an active format is indicated, then it overrides the
366
           mpeg format */
367
#if 0
368
        if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
369
            is->dtg_active_format = is->video_st->codec.dtg_active_format;
370
            printf("dtg_active_format=%d\n", is->dtg_active_format);
371
        }
372
#endif
373
#if 0
374
        switch(is->video_st->codec.dtg_active_format) {
375
        case FF_DTG_AFD_SAME:
376
        default:
377
            /* nothing to do */
378
            break;
379
        case FF_DTG_AFD_4_3:
380
            aspect_ratio = 4.0 / 3.0;
381
            break;
382
        case FF_DTG_AFD_16_9:
383
            aspect_ratio = 16.0 / 9.0;
384
            break;
385
        case FF_DTG_AFD_14_9:
386
            aspect_ratio = 14.0 / 9.0;
387
            break;
388
        case FF_DTG_AFD_4_3_SP_14_9:
389
            aspect_ratio = 14.0 / 9.0;
390
            break;
391
        case FF_DTG_AFD_16_9_SP_14_9:
392
            aspect_ratio = 14.0 / 9.0;
393
            break;
394
        case FF_DTG_AFD_SP_4_3:
395
            aspect_ratio = 4.0 / 3.0;
396
            break;
397
        }
398
#endif
399

    
400
        /* XXX: we suppose the screen has a 1.0 pixel ratio */
401
        height = is->height;
402
        width = ((int)rint(height * aspect_ratio)) & -3;
403
        if (width > is->width) {
404
            width = is->width;
405
            height = ((int)rint(width / aspect_ratio)) & -3;
406
        }
407
        x = (is->width - width) / 2;
408
        y = (is->height - height) / 2;
409
        if (!is->no_background) {
410
            /* fill the background */
411
            //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
412
        } else {
413
            is->no_background = 0;
414
        }
415
        rect.x = is->xleft + x;
416
        rect.y = is->xleft + y;
417
        rect.w = width;
418
        rect.h = height;
419
        SDL_DisplayYUVOverlay(vp->bmp, &rect);
420
    } else {
421
#if 0
422
        fill_rectangle(screen, 
423
                       is->xleft, is->ytop, is->width, is->height, 
424
                       QERGB(0x00, 0x00, 0x00));
425
#endif
426
    }
427
}
428

    
429
static inline int compute_mod(int a, int b)
430
{
431
    a = a % b;
432
    if (a >= 0) 
433
        return a;
434
    else
435
        return a + b;
436
}
437

    
438
static void video_audio_display(VideoState *s)
439
{
440
    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
441
    int ch, channels, h, h2, bgcolor, fgcolor;
442
    int16_t time_diff;
443
    
444
    /* compute display index : center on currently output samples */
445
    channels = s->audio_st->codec.channels;
446
    nb_display_channels = channels;
447
    if (!s->paused) {
448
        n = 2 * channels;
449
        delay = audio_write_get_buf_size(s);
450
        delay /= n;
451
        
452
        /* to be more precise, we take into account the time spent since
453
           the last buffer computation */
454
        if (audio_callback_time) {
455
            time_diff = av_gettime() - audio_callback_time;
456
            delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
457
        }
458
        
459
        delay -= s->width / 2;
460
        if (delay < s->width)
461
            delay = s->width;
462
        i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
463
        s->last_i_start = i_start;
464
    } else {
465
        i_start = s->last_i_start;
466
    }
467

    
468
    bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
469
    fill_rectangle(screen, 
470
                   s->xleft, s->ytop, s->width, s->height, 
471
                   bgcolor);
472

    
473
    fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
474

    
475
    /* total height for one channel */
476
    h = s->height / nb_display_channels;
477
    /* graph height / 2 */
478
    h2 = (h * 9) / 20;
479
    for(ch = 0;ch < nb_display_channels; ch++) {
480
        i = i_start + ch;
481
        y1 = s->ytop + ch * h + (h / 2); /* position of center line */
482
        for(x = 0; x < s->width; x++) {
483
            y = (s->sample_array[i] * h2) >> 15;
484
            if (y < 0) {
485
                y = -y;
486
                ys = y1 - y;
487
            } else {
488
                ys = y1;
489
            }
490
            fill_rectangle(screen, 
491
                           s->xleft + x, ys, 1, y, 
492
                           fgcolor);
493
            i += channels;
494
            if (i >= SAMPLE_ARRAY_SIZE)
495
                i -= SAMPLE_ARRAY_SIZE;
496
        }
497
    }
498

    
499
    fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
500

    
501
    for(ch = 1;ch < nb_display_channels; ch++) {
502
        y = s->ytop + ch * h;
503
        fill_rectangle(screen, 
504
                       s->xleft, y, s->width, 1, 
505
                       fgcolor);
506
    }
507
    SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
508
}
509

    
510
/* display the current picture, if any */
511
static void video_display(VideoState *is)
512
{
513
    if (is->audio_st && is->show_audio) 
514
        video_audio_display(is);
515
    else if (is->video_st)
516
        video_image_display(is);
517
}
518

    
519
static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
520
{
521
    SDL_Event event;
522
    event.type = FF_REFRESH_EVENT;
523
    event.user.data1 = opaque;
524
    SDL_PushEvent(&event);
525
    return 0; /* 0 means stop timer */
526
}
527

    
528
/* schedule a video refresh in 'delay' ms */
529
static void schedule_refresh(VideoState *is, int delay)
530
{
531
    SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
532
}
533

    
534
/* get the current audio clock value */
535
static double get_audio_clock(VideoState *is)
536
{
537
    double pts;
538
    int hw_buf_size, bytes_per_sec;
539
    pts = is->audio_clock;
540
    hw_buf_size = audio_write_get_buf_size(is);
541
    bytes_per_sec = 0;
542
    if (is->audio_st) {
543
        bytes_per_sec = is->audio_st->codec.sample_rate * 
544
            2 * is->audio_st->codec.channels;
545
    }
546
    if (bytes_per_sec)
547
        pts -= (double)hw_buf_size / bytes_per_sec;
548
    return pts;
549
}
550

    
551
/* get the current video clock value */
552
static double get_video_clock(VideoState *is)
553
{
554
    double delta;
555
    if (is->paused) {
556
        delta = 0;
557
    } else {
558
        delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
559
    }
560
    return is->video_current_pts + delta;
561
}
562

    
563
/* get the current external clock value */
564
static double get_external_clock(VideoState *is)
565
{
566
    int64_t ti;
567
    ti = av_gettime();
568
    return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
569
}
570

    
571
/* get the current master clock value */
572
static double get_master_clock(VideoState *is)
573
{
574
    double val;
575

    
576
    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
577
        if (is->video_st)
578
            val = get_video_clock(is);
579
        else
580
            val = get_audio_clock(is);
581
    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
582
        if (is->audio_st)
583
            val = get_audio_clock(is);
584
        else
585
            val = get_video_clock(is);
586
    } else {
587
        val = get_external_clock(is);
588
    }
589
    return val;
590
}
591

    
592
/* seek in the stream */
593
static void stream_seek(VideoState *is, int64_t pos, int rel)
594
{
595
    is->seek_pos = pos;
596
    is->seek_req = 1;
597
    is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
598
}
599

    
600
/* pause or resume the video */
601
static void stream_pause(VideoState *is)
602
{
603
    is->paused = !is->paused;
604
    if (is->paused) {
605
        is->video_current_pts = get_video_clock(is);
606
    }
607
}
608

    
609
/* called to display each frame */
610
static void video_refresh_timer(void *opaque)
611
{
612
    VideoState *is = opaque;
613
    VideoPicture *vp;
614
    double actual_delay, delay, sync_threshold, ref_clock, diff;
615

    
616

    
617
    if (is->video_st) {
618
        if (is->pictq_size == 0) {
619
            /* if no picture, need to wait */
620
            schedule_refresh(is, 1);
621
        } else {
622
            /* dequeue the picture */
623
            vp = &is->pictq[is->pictq_rindex];
624

    
625
            /* update current video pts */
626
            is->video_current_pts = vp->pts;
627
            is->video_current_pts_time = av_gettime();
628

    
629
            /* compute nominal delay */
630
            delay = vp->pts - is->frame_last_pts;
631
            if (delay <= 0 || delay >= 1.0) {
632
                /* if incorrect delay, use previous one */
633
                delay = is->frame_last_delay;
634
            }
635
            is->frame_last_delay = delay;
636
            is->frame_last_pts = vp->pts;
637

    
638
            /* update delay to follow master synchronisation source */
639
            if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
640
                 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
641
                /* if video is slave, we try to correct big delays by
642
                   duplicating or deleting a frame */
643
                ref_clock = get_master_clock(is);
644
                diff = vp->pts - ref_clock;
645
                
646
                /* skip or repeat frame. We take into account the
647
                   delay to compute the threshold. I still don't know
648
                   if it is the best guess */
649
                sync_threshold = AV_SYNC_THRESHOLD;
650
                if (delay > sync_threshold)
651
                    sync_threshold = delay;
652
                if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
653
                    if (diff <= -sync_threshold)
654
                        delay = 0;
655
                    else if (diff >= sync_threshold)
656
                        delay = 2 * delay;
657
                }
658
            }
659

    
660
            is->frame_timer += delay;
661
            /* compute the REAL delay (we need to do that to avoid
662
               long term errors */
663
            actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
664
            if (actual_delay < 0.010) {
665
                /* XXX: should skip picture */
666
                actual_delay = 0.010;
667
            }
668
            /* launch timer for next picture */
669
            schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
670

    
671
#if defined(DEBUG_SYNC)
672
            printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n", 
673
                   delay, actual_delay, vp->pts, -diff);
674
#endif
675

    
676
            /* display picture */
677
            video_display(is);
678
            
679
            /* update queue size and signal for next picture */
680
            if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
681
                is->pictq_rindex = 0;
682
            
683
            SDL_LockMutex(is->pictq_mutex);
684
            is->pictq_size--;
685
            SDL_CondSignal(is->pictq_cond);
686
            SDL_UnlockMutex(is->pictq_mutex);
687
        }
688
    } else if (is->audio_st) {
689
        /* draw the next audio frame */
690

    
691
        schedule_refresh(is, 40);
692

    
693
        /* if only audio stream, then display the audio bars (better
694
           than nothing, just to test the implementation */
695
        
696
        /* display picture */
697
        video_display(is);
698
    } else {
699
        schedule_refresh(is, 100);
700
    }
701
    if (show_status) {
702
        static int64_t last_time;
703
        int64_t cur_time;
704
        int aqsize, vqsize;
705
        double av_diff;
706
        
707
        cur_time = av_gettime();
708
        if (!last_time || (cur_time - last_time) >= 500 * 1000) {
709
            aqsize = 0;
710
            vqsize = 0;
711
            if (is->audio_st)
712
                aqsize = is->audioq.size;
713
            if (is->video_st)
714
                vqsize = is->videoq.size;
715
            av_diff = 0;
716
            if (is->audio_st && is->video_st)
717
                av_diff = get_audio_clock(is) - get_video_clock(is);
718
            printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB    \r", 
719
                   get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
720
            fflush(stdout);
721
            last_time = cur_time;
722
        }
723
    }
724
}
725

    
726
/* allocate a picture (needs to do that in main thread to avoid
727
   potential locking problems */
728
static void alloc_picture(void *opaque)
729
{
730
    VideoState *is = opaque;
731
    VideoPicture *vp;
732

    
733
    vp = &is->pictq[is->pictq_windex];
734

    
735
    if (vp->bmp)
736
        SDL_FreeYUVOverlay(vp->bmp);
737

    
738
#if 0
739
    /* XXX: use generic function */
740
    /* XXX: disable overlay if no hardware acceleration or if RGB format */
741
    switch(is->video_st->codec.pix_fmt) {
742
    case PIX_FMT_YUV420P:
743
    case PIX_FMT_YUV422P:
744
    case PIX_FMT_YUV444P:
745
    case PIX_FMT_YUV422:
746
    case PIX_FMT_YUV410P:
747
    case PIX_FMT_YUV411P:
748
        is_yuv = 1;
749
        break;
750
    default:
751
        is_yuv = 0;
752
        break;
753
    }
754
#endif
755
    vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
756
                                   is->video_st->codec.height,
757
                                   SDL_YV12_OVERLAY, 
758
                                   screen);
759
    vp->width = is->video_st->codec.width;
760
    vp->height = is->video_st->codec.height;
761

    
762
    SDL_LockMutex(is->pictq_mutex);
763
    vp->allocated = 1;
764
    SDL_CondSignal(is->pictq_cond);
765
    SDL_UnlockMutex(is->pictq_mutex);
766
}
767

    
768
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
769
{
770
    VideoPicture *vp;
771
    int dst_pix_fmt;
772
    AVPicture pict;
773
    
774
    /* wait until we have space to put a new picture */
775
    SDL_LockMutex(is->pictq_mutex);
776
    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
777
           !is->videoq.abort_request) {
778
        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
779
    }
780
    SDL_UnlockMutex(is->pictq_mutex);
781
    
782
    if (is->videoq.abort_request)
783
        return -1;
784

    
785
    vp = &is->pictq[is->pictq_windex];
786

    
787
    /* alloc or resize hardware picture buffer */
788
    if (!vp->bmp || 
789
        vp->width != is->video_st->codec.width ||
790
        vp->height != is->video_st->codec.height) {
791
        SDL_Event event;
792

    
793
        vp->allocated = 0;
794

    
795
        /* the allocation must be done in the main thread to avoid
796
           locking problems */
797
        event.type = FF_ALLOC_EVENT;
798
        event.user.data1 = is;
799
        SDL_PushEvent(&event);
800
        
801
        /* wait until the picture is allocated */
802
        SDL_LockMutex(is->pictq_mutex);
803
        while (!vp->allocated && !is->videoq.abort_request) {
804
            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
805
        }
806
        SDL_UnlockMutex(is->pictq_mutex);
807

    
808
        if (is->videoq.abort_request)
809
            return -1;
810
    }
811

    
812
    /* if the frame is not skipped, then display it */
813
    if (vp->bmp) {
814
        /* get a pointer on the bitmap */
815
        SDL_LockYUVOverlay (vp->bmp);
816

    
817
        dst_pix_fmt = PIX_FMT_YUV420P;
818
        pict.data[0] = vp->bmp->pixels[0];
819
        pict.data[1] = vp->bmp->pixels[2];
820
        pict.data[2] = vp->bmp->pixels[1];
821

    
822
        pict.linesize[0] = vp->bmp->pitches[0];
823
        pict.linesize[1] = vp->bmp->pitches[2];
824
        pict.linesize[2] = vp->bmp->pitches[1];
825
        img_convert(&pict, dst_pix_fmt, 
826
                    (AVPicture *)src_frame, is->video_st->codec.pix_fmt, 
827
                    is->video_st->codec.width, is->video_st->codec.height);
828
        /* update the bitmap content */
829
        SDL_UnlockYUVOverlay(vp->bmp);
830

    
831
        vp->pts = pts;
832

    
833
        /* now we can update the picture count */
834
        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
835
            is->pictq_windex = 0;
836
        SDL_LockMutex(is->pictq_mutex);
837
        is->pictq_size++;
838
        SDL_UnlockMutex(is->pictq_mutex);
839
    }
840
    return 0;
841
}
842

    
843
/* compute the exact PTS for the picture if it is omitted in the stream */
844
static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
845
{
846
    double frame_delay, pts;
847
    
848
    pts = pts1;
849

    
850
    if (pts != 0) {
851
        /* update video clock with pts, if present */
852
        is->video_clock = pts;
853
    } else {
854
        pts = is->video_clock;
855
    }
856
    /* update video clock for next frame */
857
    frame_delay = (double)is->video_st->codec.frame_rate_base / 
858
        (double)is->video_st->codec.frame_rate;
859
    /* for MPEG2, the frame can be repeated, so we update the
860
       clock accordingly */
861
    if (src_frame->repeat_pict) {
862
        frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
863
    }
864
    is->video_clock += frame_delay;
865

    
866
#if defined(DEBUG_SYNC) && 0
867
    {
868
        int ftype;
869
        if (src_frame->pict_type == FF_B_TYPE)
870
            ftype = 'B';
871
        else if (src_frame->pict_type == FF_I_TYPE)
872
            ftype = 'I';
873
        else
874
            ftype = 'P';
875
        printf("frame_type=%c clock=%0.3f pts=%0.3f\n", 
876
               ftype, pts, pts1);
877
    }
878
#endif
879
    return queue_picture(is, src_frame, pts);
880
}
881

    
882
static int video_thread(void *arg)
883
{
884
    VideoState *is = arg;
885
    AVPacket pkt1, *pkt = &pkt1;
886
    int len1, got_picture;
887
    AVFrame *frame= avcodec_alloc_frame();
888
    double pts;
889

    
890
    for(;;) {
891
        while (is->paused && !is->videoq.abort_request) {
892
            SDL_Delay(10);
893
        }
894
        if (packet_queue_get(&is->videoq, pkt, 1) < 0)
895
            break;
896
        /* NOTE: ipts is the PTS of the _first_ picture beginning in
897
           this packet, if any */
898
        pts = 0;
899
        if (pkt->dts != AV_NOPTS_VALUE)
900
            pts = (double)pkt->dts / AV_TIME_BASE;
901

    
902
        if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
903
            avpicture_fill((AVPicture *)frame, pkt->data, 
904
                           is->video_st->codec.pix_fmt,
905
                           is->video_st->codec.width,
906
                           is->video_st->codec.height);
907
            frame->pict_type = FF_I_TYPE;
908
            if (output_picture2(is, frame, pts) < 0)
909
                goto the_end;
910
        } else {
911
            len1 = avcodec_decode_video(&is->video_st->codec, 
912
                                        frame, &got_picture, 
913
                                        pkt->data, pkt->size);
914
//            if (len1 < 0)
915
//                break;
916
            if (got_picture) {
917
                if (output_picture2(is, frame, pts) < 0)
918
                    goto the_end;
919
            }
920
        }
921
        av_free_packet(pkt);
922
        if (step) 
923
            if (cur_stream)
924
                stream_pause(cur_stream);
925
    }
926
 the_end:
927
    av_free(frame);
928
    return 0;
929
}
930

    
931
/* copy samples for viewing in editor window */
932
static void update_sample_display(VideoState *is, short *samples, int samples_size)
933
{
934
    int size, len, channels;
935

    
936
    channels = is->audio_st->codec.channels;
937

    
938
    size = samples_size / sizeof(short);
939
    while (size > 0) {
940
        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
941
        if (len > size)
942
            len = size;
943
        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
944
        samples += len;
945
        is->sample_array_index += len;
946
        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
947
            is->sample_array_index = 0;
948
        size -= len;
949
    }
950
}
951

    
952
/* return the new audio buffer size (samples can be added or deleted
953
   to get better sync if video or external master clock) */
954
static int synchronize_audio(VideoState *is, short *samples, 
955
                             int samples_size1, double pts)
956
{
957
    int n, samples_size;
958
    double ref_clock;
959
    
960
    n = 2 * is->audio_st->codec.channels;
961
    samples_size = samples_size1;
962

    
963
    /* if not master, then we try to remove or add samples to correct the clock */
964
    if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
965
         is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
966
        double diff, avg_diff;
967
        int wanted_size, min_size, max_size, nb_samples;
968
            
969
        ref_clock = get_master_clock(is);
970
        diff = get_audio_clock(is) - ref_clock;
971
        
972
        if (diff < AV_NOSYNC_THRESHOLD) {
973
            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
974
            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
975
                /* not enough measures to have a correct estimate */
976
                is->audio_diff_avg_count++;
977
            } else {
978
                /* estimate the A-V difference */
979
                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
980

    
981
                if (fabs(avg_diff) >= is->audio_diff_threshold) {
982
                    wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
983
                    nb_samples = samples_size / n;
984
                
985
                    min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
986
                    max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
987
                    if (wanted_size < min_size)
988
                        wanted_size = min_size;
989
                    else if (wanted_size > max_size)
990
                        wanted_size = max_size;
991
                    
992
                    /* add or remove samples to correction the synchro */
993
                    if (wanted_size < samples_size) {
994
                        /* remove samples */
995
                        samples_size = wanted_size;
996
                    } else if (wanted_size > samples_size) {
997
                        uint8_t *samples_end, *q;
998
                        int nb;
999
                        
1000
                        /* add samples */
1001
                        nb = (samples_size - wanted_size);
1002
                        samples_end = (uint8_t *)samples + samples_size - n;
1003
                        q = samples_end + n;
1004
                        while (nb > 0) {
1005
                            memcpy(q, samples_end, n);
1006
                            q += n;
1007
                            nb -= n;
1008
                        }
1009
                        samples_size = wanted_size;
1010
                    }
1011
                }
1012
#if 0
1013
                printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n", 
1014
                       diff, avg_diff, samples_size - samples_size1, 
1015
                       is->audio_clock, is->video_clock, is->audio_diff_threshold);
1016
#endif
1017
            }
1018
        } else {
1019
            /* too big difference : may be initial PTS errors, so
1020
               reset A-V filter */
1021
            is->audio_diff_avg_count = 0;
1022
            is->audio_diff_cum = 0;
1023
        }
1024
    }
1025

    
1026
    return samples_size;
1027
}
1028

    
1029
/* decode one audio frame and returns its uncompressed size */
1030
static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1031
{
1032
    AVPacket *pkt = &is->audio_pkt;
1033
    int n, len1, data_size;
1034
    double pts;
1035

    
1036
    for(;;) {
1037
        /* NOTE: the audio packet can contain several frames */
1038
        while (is->audio_pkt_size > 0) {
1039
            len1 = avcodec_decode_audio(&is->audio_st->codec, 
1040
                                        (int16_t *)audio_buf, &data_size, 
1041
                                        is->audio_pkt_data, is->audio_pkt_size);
1042
            if (len1 < 0) {
1043
                /* if error, we skip the frame */
1044
                is->audio_pkt_size = 0;
1045
                break;
1046
            }
1047
            
1048
            is->audio_pkt_data += len1;
1049
            is->audio_pkt_size -= len1;
1050
            if (data_size <= 0)
1051
                continue;
1052
            /* if no pts, then compute it */
1053
            pts = is->audio_clock;
1054
            *pts_ptr = pts;
1055
            n = 2 * is->audio_st->codec.channels;
1056
            is->audio_clock += (double)data_size / 
1057
                (double)(n * is->audio_st->codec.sample_rate);
1058
#if defined(DEBUG_SYNC)
1059
            {
1060
                static double last_clock;
1061
                printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1062
                       is->audio_clock - last_clock,
1063
                       is->audio_clock, pts);
1064
                last_clock = is->audio_clock;
1065
            }
1066
#endif
1067
            return data_size;
1068
        }
1069

    
1070
        /* free the current packet */
1071
        if (pkt->data)
1072
            av_free_packet(pkt);
1073
        
1074
        if (is->paused || is->audioq.abort_request) {
1075
            return -1;
1076
        }
1077
        
1078
        /* read next packet */
1079
        if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1080
            return -1;
1081
        is->audio_pkt_data = pkt->data;
1082
        is->audio_pkt_size = pkt->size;
1083
        
1084
        /* if update the audio clock with the pts */
1085
        if (pkt->pts != AV_NOPTS_VALUE) {
1086
            is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
1087
        }
1088
    }
1089
}
1090

    
1091
/* get the current audio output buffer size, in samples. With SDL, we
1092
   cannot have a precise information */
1093
static int audio_write_get_buf_size(VideoState *is)
1094
{
1095
    return is->audio_hw_buf_size - is->audio_buf_index;
1096
}
1097

    
1098

    
1099
/* prepare a new audio buffer */
1100
void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1101
{
1102
    VideoState *is = opaque;
1103
    int audio_size, len1;
1104
    double pts;
1105

    
1106
    audio_callback_time = av_gettime();
1107
    
1108
    while (len > 0) {
1109
        if (is->audio_buf_index >= is->audio_buf_size) {
1110
           audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1111
           if (audio_size < 0) {
1112
                /* if error, just output silence */
1113
               is->audio_buf_size = 1024;
1114
               memset(is->audio_buf, 0, is->audio_buf_size);
1115
           } else {
1116
               if (is->show_audio)
1117
                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1118
               audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size, 
1119
                                              pts);
1120
               is->audio_buf_size = audio_size;
1121
           }
1122
           is->audio_buf_index = 0;
1123
        }
1124
        len1 = is->audio_buf_size - is->audio_buf_index;
1125
        if (len1 > len)
1126
            len1 = len;
1127
        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1128
        len -= len1;
1129
        stream += len1;
1130
        is->audio_buf_index += len1;
1131
    }
1132
}
1133

    
1134

    
1135
/* open a given stream. Return 0 if OK */
1136
static int stream_component_open(VideoState *is, int stream_index)
1137
{
1138
    AVFormatContext *ic = is->ic;
1139
    AVCodecContext *enc;
1140
    AVCodec *codec;
1141
    SDL_AudioSpec wanted_spec, spec;
1142

    
1143
    if (stream_index < 0 || stream_index >= ic->nb_streams)
1144
        return -1;
1145
    enc = &ic->streams[stream_index]->codec;
1146
    
1147
    /* prepare audio output */
1148
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
1149
        wanted_spec.freq = enc->sample_rate;
1150
        wanted_spec.format = AUDIO_S16SYS;
1151
        /* hack for AC3. XXX: suppress that */
1152
        if (enc->channels > 2)
1153
            enc->channels = 2;
1154
        wanted_spec.channels = enc->channels;
1155
        wanted_spec.silence = 0;
1156
        wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1157
        wanted_spec.callback = sdl_audio_callback;
1158
        wanted_spec.userdata = is;
1159
        if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1160
            fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1161
            return -1;
1162
        }
1163
        is->audio_hw_buf_size = spec.size;
1164
    }
1165

    
1166
    codec = avcodec_find_decoder(enc->codec_id);
1167
    enc->debug_mv = debug_mv;
1168
    enc->debug = debug;
1169
    enc->workaround_bugs = workaround_bugs;
1170
    enc->lowres = lowres;
1171
    if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1172
    enc->idct_algo= idct;
1173
    if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1174
    if (!codec ||
1175
        avcodec_open(enc, codec) < 0)
1176
        return -1;
1177
#if defined(HAVE_THREADS)
1178
    if(thread_count>1)
1179
        avcodec_thread_init(enc, thread_count);
1180
#endif
1181
    enc->thread_count= thread_count;
1182
    switch(enc->codec_type) {
1183
    case CODEC_TYPE_AUDIO:
1184
        is->audio_stream = stream_index;
1185
        is->audio_st = ic->streams[stream_index];
1186
        is->audio_buf_size = 0;
1187
        is->audio_buf_index = 0;
1188

    
1189
        /* init averaging filter */
1190
        is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1191
        is->audio_diff_avg_count = 0;
1192
        /* since we do not have a precise anough audio fifo fullness,
1193
           we correct audio sync only if larger than this threshold */
1194
        is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1195

    
1196
        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1197
        packet_queue_init(&is->audioq);
1198
        SDL_PauseAudio(0);
1199
        break;
1200
    case CODEC_TYPE_VIDEO:
1201
        is->video_stream = stream_index;
1202
        is->video_st = ic->streams[stream_index];
1203

    
1204
        is->frame_last_delay = 40e-3;
1205
        is->frame_timer = (double)av_gettime() / 1000000.0;
1206
        is->video_current_pts_time = av_gettime();
1207

    
1208
        packet_queue_init(&is->videoq);
1209
        is->video_tid = SDL_CreateThread(video_thread, is);
1210
        break;
1211
    default:
1212
        break;
1213
    }
1214
    return 0;
1215
}
1216

    
1217
static void stream_component_close(VideoState *is, int stream_index)
1218
{
1219
    AVFormatContext *ic = is->ic;
1220
    AVCodecContext *enc;
1221
    
1222
    enc = &ic->streams[stream_index]->codec;
1223

    
1224
    switch(enc->codec_type) {
1225
    case CODEC_TYPE_AUDIO:
1226
        packet_queue_abort(&is->audioq);
1227

    
1228
        SDL_CloseAudio();
1229

    
1230
        packet_queue_end(&is->audioq);
1231
        break;
1232
    case CODEC_TYPE_VIDEO:
1233
        packet_queue_abort(&is->videoq);
1234

    
1235
        /* note: we also signal this mutex to make sure we deblock the
1236
           video thread in all cases */
1237
        SDL_LockMutex(is->pictq_mutex);
1238
        SDL_CondSignal(is->pictq_cond);
1239
        SDL_UnlockMutex(is->pictq_mutex);
1240

    
1241
        SDL_WaitThread(is->video_tid, NULL);
1242

    
1243
        packet_queue_end(&is->videoq);
1244
        break;
1245
    default:
1246
        break;
1247
    }
1248

    
1249
    avcodec_close(enc);
1250
    switch(enc->codec_type) {
1251
    case CODEC_TYPE_AUDIO:
1252
        is->audio_st = NULL;
1253
        is->audio_stream = -1;
1254
        break;
1255
    case CODEC_TYPE_VIDEO:
1256
        is->video_st = NULL;
1257
        is->video_stream = -1;
1258
        break;
1259
    default:
1260
        break;
1261
    }
1262
}
1263

    
1264
void dump_stream_info(AVFormatContext *s)
1265
{
1266
    if (s->track != 0)
1267
        fprintf(stderr, "Track: %d\n", s->track);
1268
    if (s->title[0] != '\0')
1269
        fprintf(stderr, "Title: %s\n", s->title);
1270
    if (s->author[0] != '\0')
1271
        fprintf(stderr, "Author: %s\n", s->author);
1272
    if (s->album[0] != '\0')
1273
        fprintf(stderr, "Album: %s\n", s->album);
1274
    if (s->year != 0)
1275
        fprintf(stderr, "Year: %d\n", s->year);
1276
    if (s->genre[0] != '\0')
1277
        fprintf(stderr, "Genre: %s\n", s->genre);
1278
}
1279

    
1280
/* since we have only one decoding thread, we can use a global
1281
   variable instead of a thread local variable */
1282
static VideoState *global_video_state;
1283

    
1284
static int decode_interrupt_cb(void)
1285
{
1286
    return (global_video_state && global_video_state->abort_request);
1287
}
1288

    
1289
/* this thread gets the stream from the disk or the network */
1290
static int decode_thread(void *arg)
1291
{
1292
    VideoState *is = arg;
1293
    AVFormatContext *ic;
1294
    int err, i, ret, video_index, audio_index, use_play;
1295
    AVPacket pkt1, *pkt = &pkt1;
1296
    AVFormatParameters params, *ap = &params;
1297

    
1298
    video_index = -1;
1299
    audio_index = -1;
1300
    is->video_stream = -1;
1301
    is->audio_stream = -1;
1302

    
1303
    global_video_state = is;
1304
    url_set_interrupt_cb(decode_interrupt_cb);
1305

    
1306
    memset(ap, 0, sizeof(*ap));
1307
    ap->image_format = image_format;
1308
    ap->initial_pause = 1; /* we force a pause when starting an RTSP
1309
                              stream */
1310
    
1311
    err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1312
    if (err < 0) {
1313
        print_error(is->filename, err);
1314
        ret = -1;
1315
        goto fail;
1316
    }
1317
    is->ic = ic;
1318
#ifdef CONFIG_NETWORK
1319
    use_play = (ic->iformat == &rtsp_demux);
1320
#else
1321
    use_play = 0;
1322
#endif
1323
    if (!use_play) {
1324
        err = av_find_stream_info(ic);
1325
        if (err < 0) {
1326
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1327
            ret = -1;
1328
            goto fail;
1329
        }
1330
    }
1331

    
1332
    /* if seeking requested, we execute it */
1333
    if (start_time != AV_NOPTS_VALUE) {
1334
        int64_t timestamp;
1335

    
1336
        timestamp = start_time;
1337
        /* add the stream start time */
1338
        if (ic->start_time != AV_NOPTS_VALUE)
1339
            timestamp += ic->start_time;
1340
        ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1341
        if (ret < 0) {
1342
            fprintf(stderr, "%s: could not seek to position %0.3f\n", 
1343
                    is->filename, (double)timestamp / AV_TIME_BASE);
1344
        }
1345
    }
1346

    
1347
    /* now we can begin to play (RTSP stream only) */
1348
    av_read_play(ic);
1349

    
1350
    if (use_play) {
1351
        err = av_find_stream_info(ic);
1352
        if (err < 0) {
1353
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1354
            ret = -1;
1355
            goto fail;
1356
        }
1357
    }
1358

    
1359
    for(i = 0; i < ic->nb_streams; i++) {
1360
        AVCodecContext *enc = &ic->streams[i]->codec;
1361
        switch(enc->codec_type) {
1362
        case CODEC_TYPE_AUDIO:
1363
            if (audio_index < 0 && !audio_disable)
1364
                audio_index = i;
1365
            break;
1366
        case CODEC_TYPE_VIDEO:
1367
            if (video_index < 0 && !video_disable)
1368
                video_index = i;
1369
            break;
1370
        default:
1371
            break;
1372
        }
1373
    }
1374
    if (show_status) {
1375
        dump_format(ic, 0, is->filename, 0);
1376
        dump_stream_info(ic);
1377
    }
1378

    
1379
    /* open the streams */
1380
    if (audio_index >= 0) {
1381
        stream_component_open(is, audio_index);
1382
    }
1383

    
1384
    if (video_index >= 0) {
1385
        stream_component_open(is, video_index);
1386
    } else {
1387
        if (!display_disable)
1388
            is->show_audio = 1;
1389
    }
1390

    
1391
    if (is->video_stream < 0 && is->audio_stream < 0) {
1392
        fprintf(stderr, "%s: could not open codecs\n", is->filename);
1393
        ret = -1;
1394
        goto fail;
1395
    }
1396

    
1397
    for(;;) {
1398
        if (is->abort_request)
1399
            break;
1400
#ifdef CONFIG_NETWORK
1401
        if (is->paused != is->last_paused) {
1402
            is->last_paused = is->paused;
1403
            if (is->paused)
1404
                av_read_pause(ic);
1405
            else
1406
                av_read_play(ic);
1407
        }
1408
        if (is->paused && ic->iformat == &rtsp_demux) {
1409
            /* wait 10 ms to avoid trying to get another packet */
1410
            /* XXX: horrible */
1411
            SDL_Delay(10);
1412
            continue;
1413
        }
1414
#endif
1415
        if (is->seek_req) {
1416
            /* XXX: must lock decoder threads */
1417
            ret = av_seek_frame(is->ic, -1, is->seek_pos, is->seek_flags);
1418
            if (ret < 0) {
1419
                fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1420
            }else{
1421
                if (is->audio_stream >= 0) {
1422
                    packet_queue_flush(&is->audioq);
1423
                }
1424
                if (is->video_stream >= 0) {
1425
                    packet_queue_flush(&is->videoq);
1426
                    avcodec_flush_buffers(&ic->streams[video_index]->codec);
1427
                }
1428
            }
1429
            is->seek_req = 0;
1430
        }
1431

    
1432
        /* if the queue are full, no need to read more */
1433
        if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1434
            is->videoq.size > MAX_VIDEOQ_SIZE || 
1435
            url_feof(&ic->pb)) {
1436
            /* wait 10 ms */
1437
            SDL_Delay(10);
1438
            continue;
1439
        }
1440
        ret = av_read_frame(ic, pkt);
1441
        if (ret < 0) {
1442
            if (url_feof(&ic->pb) && url_ferror(&ic->pb) == 0) {
1443
                SDL_Delay(100); /* wait for user event */
1444
                continue;
1445
            } else
1446
                break;
1447
        }
1448
        if (pkt->stream_index == is->audio_stream) {
1449
            packet_queue_put(&is->audioq, pkt);
1450
        } else if (pkt->stream_index == is->video_stream) {
1451
            packet_queue_put(&is->videoq, pkt);
1452
        } else {
1453
            av_free_packet(pkt);
1454
        }
1455
    }
1456
    /* wait until the end */
1457
    while (!is->abort_request) {
1458
        SDL_Delay(100);
1459
    }
1460

    
1461
    ret = 0;
1462
 fail:
1463
    /* disable interrupting */
1464
    global_video_state = NULL;
1465

    
1466
    /* close each stream */
1467
    if (is->audio_stream >= 0)
1468
        stream_component_close(is, is->audio_stream);
1469
    if (is->video_stream >= 0)
1470
        stream_component_close(is, is->video_stream);
1471
    if (is->ic) {
1472
        av_close_input_file(is->ic);
1473
        is->ic = NULL; /* safety */
1474
    }
1475
    url_set_interrupt_cb(NULL);
1476

    
1477
    if (ret != 0) {
1478
        SDL_Event event;
1479
        
1480
        event.type = FF_QUIT_EVENT;
1481
        event.user.data1 = is;
1482
        SDL_PushEvent(&event);
1483
    }
1484
    return 0;
1485
}
1486

    
1487
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1488
{
1489
    VideoState *is;
1490

    
1491
    is = av_mallocz(sizeof(VideoState));
1492
    if (!is)
1493
        return NULL;
1494
    pstrcpy(is->filename, sizeof(is->filename), filename);
1495
    is->iformat = iformat;
1496
    if (screen) {
1497
        is->width = screen->w;
1498
        is->height = screen->h;
1499
    }
1500
    is->ytop = 0;
1501
    is->xleft = 0;
1502

    
1503
    /* start video display */
1504
    is->pictq_mutex = SDL_CreateMutex();
1505
    is->pictq_cond = SDL_CreateCond();
1506

    
1507
    /* add the refresh timer to draw the picture */
1508
    schedule_refresh(is, 40);
1509

    
1510
    is->av_sync_type = av_sync_type;
1511
    is->parse_tid = SDL_CreateThread(decode_thread, is);
1512
    if (!is->parse_tid) {
1513
        av_free(is);
1514
        return NULL;
1515
    }
1516
    return is;
1517
}
1518

    
1519
static void stream_close(VideoState *is)
1520
{
1521
    VideoPicture *vp;
1522
    int i;
1523
    /* XXX: use a special url_shutdown call to abort parse cleanly */
1524
    is->abort_request = 1;
1525
    SDL_WaitThread(is->parse_tid, NULL);
1526

    
1527
    /* free all pictures */
1528
    for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1529
        vp = &is->pictq[i];
1530
        if (vp->bmp) {
1531
            SDL_FreeYUVOverlay(vp->bmp);
1532
            vp->bmp = NULL;
1533
        }
1534
    }
1535
    SDL_DestroyMutex(is->pictq_mutex);
1536
    SDL_DestroyCond(is->pictq_cond);
1537
}
1538

    
1539
void stream_cycle_channel(VideoState *is, int codec_type)
1540
{
1541
    AVFormatContext *ic = is->ic;
1542
    int start_index, stream_index;
1543
    AVStream *st;
1544

    
1545
    if (codec_type == CODEC_TYPE_VIDEO)
1546
        start_index = is->video_stream;
1547
    else
1548
        start_index = is->audio_stream;
1549
    if (start_index < 0)
1550
        return;
1551
    stream_index = start_index;
1552
    for(;;) {
1553
        if (++stream_index >= is->ic->nb_streams)
1554
            stream_index = 0;
1555
        if (stream_index == start_index)
1556
            return;
1557
        st = ic->streams[stream_index];
1558
        if (st->codec.codec_type == codec_type) {
1559
            /* check that parameters are OK */
1560
            switch(codec_type) {
1561
            case CODEC_TYPE_AUDIO:
1562
                if (st->codec.sample_rate != 0 &&
1563
                    st->codec.channels != 0)
1564
                    goto the_end;
1565
                break;
1566
            case CODEC_TYPE_VIDEO:
1567
                goto the_end;
1568
            default:
1569
                break;
1570
            }
1571
        }
1572
    }
1573
 the_end:
1574
    stream_component_close(is, start_index);
1575
    stream_component_open(is, stream_index);
1576
}
1577

    
1578

    
1579
void toggle_full_screen(void)
1580
{
1581
    int w, h, flags;
1582
    is_full_screen = !is_full_screen;
1583
    if (!fs_screen_width) {
1584
        /* use default SDL method */
1585
        SDL_WM_ToggleFullScreen(screen);
1586
    } else {
1587
        /* use the recorded resolution */
1588
        flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1589
        if (is_full_screen) {
1590
            w = fs_screen_width;
1591
            h = fs_screen_height;
1592
            flags |= SDL_FULLSCREEN;
1593
        } else {
1594
            w = screen_width;
1595
            h = screen_height;
1596
            flags |= SDL_RESIZABLE;
1597
        }
1598
        screen = SDL_SetVideoMode(w, h, 0, flags);
1599
        cur_stream->width = w;
1600
        cur_stream->height = h;
1601
    }
1602
}
1603

    
1604
void toggle_pause(void)
1605
{
1606
    if (cur_stream)
1607
        stream_pause(cur_stream);
1608
    step = 0;
1609
}
1610

    
1611
void step_to_next_frame(void)
1612
{
1613
    if (cur_stream) {
1614
        if (cur_stream->paused)
1615
            cur_stream->paused=0;
1616
        cur_stream->video_current_pts = get_video_clock(cur_stream);
1617
    }
1618
    step = 1;
1619
}
1620

    
1621
void do_exit(void)
1622
{
1623
    if (cur_stream) {
1624
        stream_close(cur_stream);
1625
        cur_stream = NULL;
1626
    }
1627
    if (show_status)
1628
        printf("\n");
1629
    SDL_Quit();
1630
    exit(0);
1631
}
1632

    
1633
void toggle_audio_display(void)
1634
{
1635
    if (cur_stream) {
1636
        cur_stream->show_audio = !cur_stream->show_audio;
1637
    }
1638
}
1639

    
1640
/* handle an event sent by the GUI */
1641
void event_loop(void)
1642
{
1643
    SDL_Event event;
1644
    double incr, pos, frac;
1645

    
1646
    for(;;) {
1647
        SDL_WaitEvent(&event);
1648
        switch(event.type) {
1649
        case SDL_KEYDOWN:
1650
            switch(event.key.keysym.sym) {
1651
            case SDLK_ESCAPE:
1652
            case SDLK_q:
1653
                do_exit();
1654
                break;
1655
            case SDLK_f:
1656
                toggle_full_screen();
1657
                break;
1658
            case SDLK_p:
1659
            case SDLK_SPACE:
1660
                toggle_pause();
1661
                break;
1662
            case SDLK_s: //S: Step to next frame
1663
                step_to_next_frame();
1664
                break;
1665
            case SDLK_a:
1666
                if (cur_stream) 
1667
                    stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1668
                break;
1669
            case SDLK_v:
1670
                if (cur_stream) 
1671
                    stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1672
                break;
1673
            case SDLK_w:
1674
                toggle_audio_display();
1675
                break;
1676
            case SDLK_LEFT:
1677
                incr = -10.0;
1678
                goto do_seek;
1679
            case SDLK_RIGHT:
1680
                incr = 10.0;
1681
                goto do_seek;
1682
            case SDLK_UP:
1683
                incr = 60.0;
1684
                goto do_seek;
1685
            case SDLK_DOWN:
1686
                incr = -60.0;
1687
            do_seek:
1688
                if (cur_stream) {
1689
                    pos = get_master_clock(cur_stream);
1690
                    pos += incr;
1691
                    stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
1692
                }
1693
                break;
1694
            default:
1695
                break;
1696
            }
1697
            break;
1698
        case SDL_MOUSEBUTTONDOWN:
1699
            if (cur_stream) {
1700
                int ns, hh, mm, ss;
1701
                int tns, thh, tmm, tss;
1702
                tns = cur_stream->ic->duration/1000000LL;
1703
                thh = tns/3600;
1704
                tmm = (tns%3600)/60;
1705
                tss = (tns%60);
1706
                frac = (double)event.button.x/(double)cur_stream->width;
1707
                ns = frac*tns;
1708
                hh = ns/3600;
1709
                mm = (ns%3600)/60;
1710
                ss = (ns%60);
1711
                fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
1712
                        hh, mm, ss, thh, tmm, tss);
1713
                stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
1714
            }
1715
            break;
1716
        case SDL_VIDEORESIZE:
1717
            if (cur_stream) {
1718
                screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0, 
1719
                                          SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1720
                cur_stream->width = event.resize.w;
1721
                cur_stream->height = event.resize.h;
1722
            }
1723
            break;
1724
        case SDL_QUIT:
1725
        case FF_QUIT_EVENT:
1726
            do_exit();
1727
            break;
1728
        case FF_ALLOC_EVENT:
1729
            alloc_picture(event.user.data1);
1730
            break;
1731
        case FF_REFRESH_EVENT:
1732
            video_refresh_timer(event.user.data1);
1733
            break;
1734
        default:
1735
            break;
1736
        }
1737
    }
1738
}
1739

    
1740
void opt_width(const char *arg)
1741
{
1742
    screen_width = atoi(arg);
1743
}
1744

    
1745
void opt_height(const char *arg)
1746
{
1747
    screen_height = atoi(arg);
1748
}
1749

    
1750
static void opt_format(const char *arg)
1751
{
1752
    file_iformat = av_find_input_format(arg);
1753
    if (!file_iformat) {
1754
        fprintf(stderr, "Unknown input format: %s\n", arg);
1755
        exit(1);
1756
    }
1757
}
1758

    
1759
static void opt_image_format(const char *arg)
1760
{
1761
    AVImageFormat *f;
1762
    
1763
    for(f = first_image_format; f != NULL; f = f->next) {
1764
        if (!strcmp(arg, f->name))
1765
            break;
1766
    }
1767
    if (!f) {
1768
        fprintf(stderr, "Unknown image format: '%s'\n", arg);
1769
        exit(1);
1770
    }
1771
    image_format = f;
1772
}
1773

    
1774
#ifdef CONFIG_NETWORK
1775
void opt_rtp_tcp(void)
1776
{
1777
    /* only tcp protocol */
1778
    rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1779
}
1780
#endif
1781

    
1782
void opt_sync(const char *arg)
1783
{
1784
    if (!strcmp(arg, "audio"))
1785
        av_sync_type = AV_SYNC_AUDIO_MASTER;
1786
    else if (!strcmp(arg, "video"))
1787
        av_sync_type = AV_SYNC_VIDEO_MASTER;
1788
    else if (!strcmp(arg, "ext"))
1789
        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1790
    else
1791
        show_help();
1792
}
1793

    
1794
void opt_seek(const char *arg)
1795
{
1796
    start_time = parse_date(arg, 1);
1797
}
1798

    
1799
static void opt_debug(const char *arg)
1800
{
1801
    debug = atoi(arg);
1802
}
1803
    
1804
static void opt_vismv(const char *arg)
1805
{
1806
    debug_mv = atoi(arg);
1807
}
1808

    
1809
static void opt_thread_count(const char *arg)
1810
{
1811
    thread_count= atoi(arg);
1812
#if !defined(HAVE_THREADS)
1813
    fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1814
#endif
1815
}
1816
    
1817
const OptionDef options[] = {
1818
    { "h", 0, {(void*)show_help}, "show help" },    
1819
    { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1820
    { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1821
#if 0
1822
    /* disabled as SDL/X11 does not support it correctly on application launch */
1823
    { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1824
#endif
1825
    { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1826
    { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1827
    { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1828
    { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1829
    { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1830
    { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1831
    { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1832
    { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1833
    { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
1834
    { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1835
    { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
1836
    { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
1837
    { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
1838
#ifdef CONFIG_NETWORK
1839
    { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1840
#endif
1841
    { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1842
    { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1843
    { NULL, },
1844
};
1845

    
1846
void show_help(void)
1847
{
1848
    printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1849
           "usage: ffplay [options] input_file\n"
1850
           "Simple media player\n");
1851
    printf("\n");
1852
    show_help_options(options, "Main options:\n",
1853
                      OPT_EXPERT, 0);
1854
    show_help_options(options, "\nAdvanced options:\n",
1855
                      OPT_EXPERT, OPT_EXPERT);
1856
    printf("\nWhile playing:\n"
1857
           "q, ESC              quit\n"
1858
           "f                   toggle full screen\n"
1859
           "p, SPC              pause\n"
1860
           "a                   cycle audio channel\n"
1861
           "v                   cycle video channel\n"
1862
           "w                   show audio waves\n"
1863
           "left/right          seek backward/forward 10 seconds\n"
1864
           "down/up             seek backward/forward 1 minute\n"
1865
           "mouse click         seek to percentage in file corresponding to fraction of width\n"
1866
           );
1867
    exit(1);
1868
}
1869

    
1870
void parse_arg_file(const char *filename)
1871
{
1872
    if (!strcmp(filename, "-"))
1873
                    filename = "pipe:";
1874
    input_filename = filename;
1875
}
1876

    
1877
/* Called from the main */
1878
int main(int argc, char **argv)
1879
{
1880
    int flags, w, h;
1881
    
1882
    /* register all codecs, demux and protocols */
1883
    av_register_all();
1884

    
1885
    parse_options(argc, argv, options);
1886

    
1887
    if (!input_filename)
1888
        show_help();
1889

    
1890
    if (display_disable) {
1891
        video_disable = 1;
1892
    }
1893
    flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1894
#ifndef CONFIG_WIN32
1895
    flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1896
#endif
1897
    if (SDL_Init (flags)) {
1898
        fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1899
        exit(1);
1900
    }
1901

    
1902
    if (!display_disable) {
1903
#ifdef HAVE_X11
1904
        /* save the screen resolution... SDL should allow full screen
1905
           by resizing the window */
1906
        {
1907
            Display *dpy;
1908
            dpy = XOpenDisplay(NULL);
1909
            if (dpy) {
1910
                fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1911
                fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1912
                XCloseDisplay(dpy);
1913
            }
1914
        }
1915
#endif
1916
        flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1917
        if (is_full_screen && fs_screen_width) {
1918
            w = fs_screen_width;
1919
            h = fs_screen_height;
1920
            flags |= SDL_FULLSCREEN;
1921
        } else {
1922
            w = screen_width;
1923
            h = screen_height;
1924
            flags |= SDL_RESIZABLE;
1925
        }
1926
        screen = SDL_SetVideoMode(w, h, 0, flags);
1927
        if (!screen) {
1928
            fprintf(stderr, "SDL: could not set video mode - exiting\n");
1929
            exit(1);
1930
        }
1931
        SDL_WM_SetCaption("FFplay", "FFplay");
1932
    }
1933

    
1934
    SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1935
    SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1936
    SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1937
    SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1938

    
1939
    cur_stream = stream_open(input_filename, file_iformat);
1940

    
1941
    event_loop();
1942

    
1943
    /* never returns */
1944

    
1945
    return 0;
1946
}