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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
 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * 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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 */
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#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
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#undef main /* We don't want SDL to override our main() */
29
#endif
30

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

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

    
39
//#define DEBUG_SYNC
40

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

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

    
48
/* no AV sync correction is done if below the AV sync threshold */
49
#define AV_SYNC_THRESHOLD 0.08
50
/* no AV correction is done if too big error */
51
#define AV_NOSYNC_THRESHOLD 10.0
52

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

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

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

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

    
71
#define VIDEO_PICTURE_QUEUE_SIZE 1
72

    
73
typedef struct VideoPicture {
74
    double pts; /* presentation time stamp for this picture */
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    SDL_Overlay *bmp;
76
    int width, height; /* source height & width */
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    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
    int64_t seek_pos;
96
    AVFormatContext *ic;
97
    int dtg_active_format;
98

    
99
    int audio_stream;
100
    
101
    int av_sync_type;
102
    double external_clock; /* external clock base */
103
    int64_t external_clock_time;
104
    
105
    double audio_clock;
106
    double audio_diff_cum; /* used for AV difference average computation */
107
    double audio_diff_avg_coef;
108
    double audio_diff_threshold;
109
    int audio_diff_avg_count;
110
    AVStream *audio_st;
111
    PacketQueue audioq;
112
    int audio_hw_buf_size;
113
    /* samples output by the codec. we reserve more space for avsync
114
       compensation */
115
    uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]; 
116
    int audio_buf_size; /* in bytes */
117
    int audio_buf_index; /* in bytes */
118
    AVPacket audio_pkt;
119
    uint8_t *audio_pkt_data;
120
    int audio_pkt_size;
121
    
122
    int show_audio; /* if true, display audio samples */
123
    int16_t sample_array[SAMPLE_ARRAY_SIZE];
124
    int sample_array_index;
125
    int last_i_start;
126
    
127
    double frame_timer;
128
    double frame_last_pts;
129
    double frame_last_delay;
130
    double video_clock;
131
    int video_stream;
132
    AVStream *video_st;
133
    PacketQueue videoq;
134
    double video_last_P_pts; /* pts of the last P picture (needed if B
135
                                frames are present) */
136
    double video_current_pts; /* current displayed pts (different from
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                                 video_clock if frame fifos are used) */
138
    int64_t video_current_pts_time; /* time at which we updated
139
                                       video_current_pts - used to
140
                                       have running video pts */
141
    VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
142
    int pictq_size, pictq_rindex, pictq_windex;
143
    SDL_mutex *pictq_mutex;
144
    SDL_cond *pictq_cond;
145
    
146
    //    QETimer *video_timer;
147
    char filename[1024];
148
    int width, height, xleft, ytop;
149
} VideoState;
150

    
151
void show_help(void);
152
static int audio_write_get_buf_size(VideoState *is);
153

    
154
/* options specified by the user */
155
static AVInputFormat *file_iformat;
156
static AVImageFormat *image_format;
157
static const char *input_filename;
158
static int fs_screen_width;
159
static int fs_screen_height;
160
static int screen_width = 640;
161
static int screen_height = 480;
162
static int audio_disable;
163
static int video_disable;
164
static int display_disable;
165
static int show_status;
166
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
167
static int64_t start_time = AV_NOPTS_VALUE;
168
static int debug = 0;
169
static int debug_mv = 0;
170
static int step = 0;
171
static int thread_count = 1;
172

    
173
/* current context */
174
static int is_full_screen;
175
static VideoState *cur_stream;
176
static int64_t audio_callback_time;
177

    
178
#define FF_ALLOC_EVENT   (SDL_USEREVENT)
179
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
180
#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
181

    
182
SDL_Surface *screen;
183

    
184
/* packet queue handling */
185
static void packet_queue_init(PacketQueue *q)
186
{
187
    memset(q, 0, sizeof(PacketQueue));
188
    q->mutex = SDL_CreateMutex();
189
    q->cond = SDL_CreateCond();
190
}
191

    
192
static void packet_queue_flush(PacketQueue *q)
193
{
194
    AVPacketList *pkt, *pkt1;
195

    
196
    for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
197
        pkt1 = pkt->next;
198
        av_free_packet(&pkt->pkt);
199
    }
200
    q->last_pkt = NULL;
201
    q->first_pkt = NULL;
202
    q->nb_packets = 0;
203
    q->size = 0;
204
}
205

    
206
static void packet_queue_end(PacketQueue *q)
207
{
208
    packet_queue_flush(q);
209
    SDL_DestroyMutex(q->mutex);
210
    SDL_DestroyCond(q->cond);
211
}
212

    
213
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
214
{
215
    AVPacketList *pkt1;
216

    
217
    /* duplicate the packet */
218
    if (av_dup_packet(pkt) < 0)
219
        return -1;
220
    
221
    pkt1 = av_malloc(sizeof(AVPacketList));
222
    if (!pkt1)
223
        return -1;
224
    pkt1->pkt = *pkt;
225
    pkt1->next = NULL;
226

    
227

    
228
    SDL_LockMutex(q->mutex);
229

    
230
    if (!q->last_pkt)
231

    
232
        q->first_pkt = pkt1;
233
    else
234
        q->last_pkt->next = pkt1;
235
    q->last_pkt = pkt1;
236
    q->nb_packets++;
237
    q->size += pkt1->pkt.size;
238
    /* XXX: should duplicate packet data in DV case */
239
    SDL_CondSignal(q->cond);
240

    
241
    SDL_UnlockMutex(q->mutex);
242
    return 0;
243
}
244

    
245
static void packet_queue_abort(PacketQueue *q)
246
{
247
    SDL_LockMutex(q->mutex);
248

    
249
    q->abort_request = 1;
250
    
251
    SDL_CondSignal(q->cond);
252

    
253
    SDL_UnlockMutex(q->mutex);
254
}
255

    
256
/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
257
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
258
{
259
    AVPacketList *pkt1;
260
    int ret;
261

    
262
    SDL_LockMutex(q->mutex);
263

    
264
    for(;;) {
265
        if (q->abort_request) {
266
            ret = -1;
267
            break;
268
        }
269
            
270
        pkt1 = q->first_pkt;
271
        if (pkt1) {
272
            q->first_pkt = pkt1->next;
273
            if (!q->first_pkt)
274
                q->last_pkt = NULL;
275
            q->nb_packets--;
276
            q->size -= pkt1->pkt.size;
277
            *pkt = pkt1->pkt;
278
            av_free(pkt1);
279
            ret = 1;
280
            break;
281
        } else if (!block) {
282
            ret = 0;
283
            break;
284
        } else {
285
            SDL_CondWait(q->cond, q->mutex);
286
        }
287
    }
288
    SDL_UnlockMutex(q->mutex);
289
    return ret;
290
}
291

    
292
static inline void fill_rectangle(SDL_Surface *screen, 
293
                                  int x, int y, int w, int h, int color)
294
{
295
    SDL_Rect rect;
296
    rect.x = x;
297
    rect.y = y;
298
    rect.w = w;
299
    rect.h = h;
300
    SDL_FillRect(screen, &rect, color);
301
}
302

    
303
#if 0
304
/* draw only the border of a rectangle */
305
void fill_border(VideoState *s, int x, int y, int w, int h, int color)
306
{
307
    int w1, w2, h1, h2;
308

309
    /* fill the background */
310
    w1 = x;
311
    if (w1 < 0)
312
        w1 = 0;
313
    w2 = s->width - (x + w);
314
    if (w2 < 0)
315
        w2 = 0;
316
    h1 = y;
317
    if (h1 < 0)
318
        h1 = 0;
319
    h2 = s->height - (y + h);
320
    if (h2 < 0)
321
        h2 = 0;
322
    fill_rectangle(screen, 
323
                   s->xleft, s->ytop, 
324
                   w1, s->height, 
325
                   color);
326
    fill_rectangle(screen, 
327
                   s->xleft + s->width - w2, s->ytop, 
328
                   w2, s->height, 
329
                   color);
330
    fill_rectangle(screen, 
331
                   s->xleft + w1, s->ytop, 
332
                   s->width - w1 - w2, h1, 
333
                   color);
334
    fill_rectangle(screen, 
335
                   s->xleft + w1, s->ytop + s->height - h2,
336
                   s->width - w1 - w2, h2,
337
                   color);
338
}
339
#endif
340

    
341
static void video_image_display(VideoState *is)
342
{
343
    VideoPicture *vp;
344
    float aspect_ratio;
345
    int width, height, x, y;
346
    SDL_Rect rect;
347

    
348
    vp = &is->pictq[is->pictq_rindex];
349
    if (vp->bmp) {
350
        /* XXX: use variable in the frame */
351
        if (is->video_st->codec.sample_aspect_ratio.num == 0) 
352
            aspect_ratio = 0;
353
        else
354
            aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio) 
355
                * is->video_st->codec.width / is->video_st->codec.height;;
356
        if (aspect_ratio <= 0.0)
357
            aspect_ratio = (float)is->video_st->codec.width / 
358
                (float)is->video_st->codec.height;
359
        /* if an active format is indicated, then it overrides the
360
           mpeg format */
361
#if 0
362
        if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
363
            is->dtg_active_format = is->video_st->codec.dtg_active_format;
364
            printf("dtg_active_format=%d\n", is->dtg_active_format);
365
        }
366
#endif
367
#if 0
368
        switch(is->video_st->codec.dtg_active_format) {
369
        case FF_DTG_AFD_SAME:
370
        default:
371
            /* nothing to do */
372
            break;
373
        case FF_DTG_AFD_4_3:
374
            aspect_ratio = 4.0 / 3.0;
375
            break;
376
        case FF_DTG_AFD_16_9:
377
            aspect_ratio = 16.0 / 9.0;
378
            break;
379
        case FF_DTG_AFD_14_9:
380
            aspect_ratio = 14.0 / 9.0;
381
            break;
382
        case FF_DTG_AFD_4_3_SP_14_9:
383
            aspect_ratio = 14.0 / 9.0;
384
            break;
385
        case FF_DTG_AFD_16_9_SP_14_9:
386
            aspect_ratio = 14.0 / 9.0;
387
            break;
388
        case FF_DTG_AFD_SP_4_3:
389
            aspect_ratio = 4.0 / 3.0;
390
            break;
391
        }
392
#endif
393

    
394
        /* XXX: we suppose the screen has a 1.0 pixel ratio */
395
        height = is->height;
396
        width = ((int)rint(height * aspect_ratio)) & -3;
397
        if (width > is->width) {
398
            width = is->width;
399
            height = ((int)rint(width / aspect_ratio)) & -3;
400
        }
401
        x = (is->width - width) / 2;
402
        y = (is->height - height) / 2;
403
        if (!is->no_background) {
404
            /* fill the background */
405
            //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
406
        } else {
407
            is->no_background = 0;
408
        }
409
        rect.x = is->xleft + x;
410
        rect.y = is->xleft + y;
411
        rect.w = width;
412
        rect.h = height;
413
        SDL_DisplayYUVOverlay(vp->bmp, &rect);
414
    } else {
415
#if 0
416
        fill_rectangle(screen, 
417
                       is->xleft, is->ytop, is->width, is->height, 
418
                       QERGB(0x00, 0x00, 0x00));
419
#endif
420
    }
421
}
422

    
423
static inline int compute_mod(int a, int b)
424
{
425
    a = a % b;
426
    if (a >= 0) 
427
        return a;
428
    else
429
        return a + b;
430
}
431

    
432
static void video_audio_display(VideoState *s)
433
{
434
    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
435
    int ch, channels, h, h2, bgcolor, fgcolor;
436
    int16_t time_diff;
437
    
438
    /* compute display index : center on currently output samples */
439
    channels = s->audio_st->codec.channels;
440
    nb_display_channels = channels;
441
    if (!s->paused) {
442
        n = 2 * channels;
443
        delay = audio_write_get_buf_size(s);
444
        delay /= n;
445
        
446
        /* to be more precise, we take into account the time spent since
447
           the last buffer computation */
448
        if (audio_callback_time) {
449
            time_diff = av_gettime() - audio_callback_time;
450
            delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
451
        }
452
        
453
        delay -= s->width / 2;
454
        if (delay < s->width)
455
            delay = s->width;
456
        i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
457
        s->last_i_start = i_start;
458
    } else {
459
        i_start = s->last_i_start;
460
    }
461

    
462
    bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
463
    fill_rectangle(screen, 
464
                   s->xleft, s->ytop, s->width, s->height, 
465
                   bgcolor);
466

    
467
    fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
468

    
469
    /* total height for one channel */
470
    h = s->height / nb_display_channels;
471
    /* graph height / 2 */
472
    h2 = (h * 9) / 20;
473
    for(ch = 0;ch < nb_display_channels; ch++) {
474
        i = i_start + ch;
475
        y1 = s->ytop + ch * h + (h / 2); /* position of center line */
476
        for(x = 0; x < s->width; x++) {
477
            y = (s->sample_array[i] * h2) >> 15;
478
            if (y < 0) {
479
                y = -y;
480
                ys = y1 - y;
481
            } else {
482
                ys = y1;
483
            }
484
            fill_rectangle(screen, 
485
                           s->xleft + x, ys, 1, y, 
486
                           fgcolor);
487
            i += channels;
488
            if (i >= SAMPLE_ARRAY_SIZE)
489
                i -= SAMPLE_ARRAY_SIZE;
490
        }
491
    }
492

    
493
    fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
494

    
495
    for(ch = 1;ch < nb_display_channels; ch++) {
496
        y = s->ytop + ch * h;
497
        fill_rectangle(screen, 
498
                       s->xleft, y, s->width, 1, 
499
                       fgcolor);
500
    }
501
    SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
502
}
503

    
504
/* display the current picture, if any */
505
static void video_display(VideoState *is)
506
{
507
    if (is->audio_st && is->show_audio) 
508
        video_audio_display(is);
509
    else if (is->video_st)
510
        video_image_display(is);
511
}
512

    
513
static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
514
{
515
    SDL_Event event;
516
    event.type = FF_REFRESH_EVENT;
517
    event.user.data1 = opaque;
518
    SDL_PushEvent(&event);
519
    return 0; /* 0 means stop timer */
520
}
521

    
522
/* schedule a video refresh in 'delay' ms */
523
static void schedule_refresh(VideoState *is, int delay)
524
{
525
    SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
526
}
527

    
528
/* get the current audio clock value */
529
static double get_audio_clock(VideoState *is)
530
{
531
    double pts;
532
    int hw_buf_size, bytes_per_sec;
533
    pts = is->audio_clock;
534
    hw_buf_size = audio_write_get_buf_size(is);
535
    bytes_per_sec = 0;
536
    if (is->audio_st) {
537
        bytes_per_sec = is->audio_st->codec.sample_rate * 
538
            2 * is->audio_st->codec.channels;
539
    }
540
    if (bytes_per_sec)
541
        pts -= (double)hw_buf_size / bytes_per_sec;
542
    return pts;
543
}
544

    
545
/* get the current video clock value */
546
static double get_video_clock(VideoState *is)
547
{
548
    double delta;
549
    if (is->paused) {
550
        delta = 0;
551
    } else {
552
        delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
553
    }
554
    return is->video_current_pts + delta;
555
}
556

    
557
/* get the current external clock value */
558
static double get_external_clock(VideoState *is)
559
{
560
    int64_t ti;
561
    ti = av_gettime();
562
    return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
563
}
564

    
565
/* get the current master clock value */
566
static double get_master_clock(VideoState *is)
567
{
568
    double val;
569

    
570
    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
571
        if (is->video_st)
572
            val = get_video_clock(is);
573
        else
574
            val = get_audio_clock(is);
575
    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
576
        if (is->audio_st)
577
            val = get_audio_clock(is);
578
        else
579
            val = get_video_clock(is);
580
    } else {
581
        val = get_external_clock(is);
582
    }
583
    return val;
584
}
585

    
586
/* seek in the stream */
587
static void stream_seek(VideoState *is, int64_t pos)
588
{
589
    is->seek_pos = pos;
590
    is->seek_req = 1;
591
}
592

    
593
/* pause or resume the video */
594
static void stream_pause(VideoState *is)
595
{
596
    is->paused = !is->paused;
597
    if (is->paused) {
598
        is->video_current_pts = get_video_clock(is);
599
    }
600
}
601

    
602
/* called to display each frame */
603
static void video_refresh_timer(void *opaque)
604
{
605
    VideoState *is = opaque;
606
    VideoPicture *vp;
607
    double actual_delay, delay, sync_threshold, ref_clock, diff;
608

    
609

    
610
    if (is->video_st) {
611
        if (is->pictq_size == 0) {
612
            /* if no picture, need to wait */
613
            schedule_refresh(is, 40);
614
        } else {
615
            /* dequeue the picture */
616
            vp = &is->pictq[is->pictq_rindex];
617

    
618
            /* update current video pts */
619
            is->video_current_pts = vp->pts;
620
            is->video_current_pts_time = av_gettime();
621

    
622
            /* compute nominal delay */
623
            delay = vp->pts - is->frame_last_pts;
624
            if (delay <= 0 || delay >= 1.0) {
625
                /* if incorrect delay, use previous one */
626
                delay = is->frame_last_delay;
627
            }
628
            is->frame_last_delay = delay;
629
            is->frame_last_pts = vp->pts;
630

    
631
            /* update delay to follow master synchronisation source */
632
            if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
633
                 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
634
                /* if video is slave, we try to correct big delays by
635
                   duplicating or deleting a frame */
636
                ref_clock = get_master_clock(is);
637
                diff = vp->pts - ref_clock;
638
                
639
                /* skip or repeat frame. We take into account the
640
                   delay to compute the threshold. I still don't know
641
                   if it is the best guess */
642
                sync_threshold = AV_SYNC_THRESHOLD;
643
                if (delay > sync_threshold)
644
                    sync_threshold = delay;
645
                if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
646
                    if (diff <= -sync_threshold)
647
                        delay = 0;
648
                    else if (diff >= sync_threshold)
649
                        delay = 2 * delay;
650
                }
651
            }
652

    
653
            is->frame_timer += delay;
654
            /* compute the REAL delay (we need to do that to avoid
655
               long term errors */
656
            actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
657
            if (actual_delay < 0.010) {
658
                /* XXX: should skip picture */
659
                actual_delay = 0.010;
660
            }
661
            /* launch timer for next picture */
662
            schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
663

    
664
#if defined(DEBUG_SYNC)
665
            printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n", 
666
                   delay, actual_delay, vp->pts, -diff);
667
#endif
668

    
669
            /* display picture */
670
            video_display(is);
671
            
672
            /* update queue size and signal for next picture */
673
            if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
674
                is->pictq_rindex = 0;
675
            
676
            SDL_LockMutex(is->pictq_mutex);
677
            is->pictq_size--;
678
            SDL_CondSignal(is->pictq_cond);
679
            SDL_UnlockMutex(is->pictq_mutex);
680
        }
681
    } else if (is->audio_st) {
682
        /* draw the next audio frame */
683

    
684
        schedule_refresh(is, 40);
685

    
686
        /* if only audio stream, then display the audio bars (better
687
           than nothing, just to test the implementation */
688
        
689
        /* display picture */
690
        video_display(is);
691
    } else {
692
        schedule_refresh(is, 100);
693
    }
694
    if (show_status) {
695
        static int64_t last_time;
696
        int64_t cur_time;
697
        int aqsize, vqsize;
698
        double av_diff;
699
        
700
        cur_time = av_gettime();
701
        if (!last_time || (cur_time - last_time) >= 500 * 1000) {
702
            aqsize = 0;
703
            vqsize = 0;
704
            if (is->audio_st)
705
                aqsize = is->audioq.size;
706
            if (is->video_st)
707
                vqsize = is->videoq.size;
708
            av_diff = 0;
709
            if (is->audio_st && is->video_st)
710
                av_diff = get_audio_clock(is) - get_video_clock(is);
711
            printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB    \r", 
712
                   get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
713
            fflush(stdout);
714
            last_time = cur_time;
715
        }
716
    }
717
}
718

    
719
/* allocate a picture (needs to do that in main thread to avoid
720
   potential locking problems */
721
static void alloc_picture(void *opaque)
722
{
723
    VideoState *is = opaque;
724
    VideoPicture *vp;
725

    
726
    vp = &is->pictq[is->pictq_windex];
727

    
728
    if (vp->bmp)
729
        SDL_FreeYUVOverlay(vp->bmp);
730

    
731
#if 0
732
    /* XXX: use generic function */
733
    /* XXX: disable overlay if no hardware acceleration or if RGB format */
734
    switch(is->video_st->codec.pix_fmt) {
735
    case PIX_FMT_YUV420P:
736
    case PIX_FMT_YUV422P:
737
    case PIX_FMT_YUV444P:
738
    case PIX_FMT_YUV422:
739
    case PIX_FMT_YUV410P:
740
    case PIX_FMT_YUV411P:
741
        is_yuv = 1;
742
        break;
743
    default:
744
        is_yuv = 0;
745
        break;
746
    }
747
#endif
748
    vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
749
                                   is->video_st->codec.height,
750
                                   SDL_YV12_OVERLAY, 
751
                                   screen);
752
    vp->width = is->video_st->codec.width;
753
    vp->height = is->video_st->codec.height;
754

    
755
    SDL_LockMutex(is->pictq_mutex);
756
    vp->allocated = 1;
757
    SDL_CondSignal(is->pictq_cond);
758
    SDL_UnlockMutex(is->pictq_mutex);
759
}
760

    
761
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
762
{
763
    VideoPicture *vp;
764
    int dst_pix_fmt;
765
    AVPicture pict;
766
    
767
    /* wait until we have space to put a new picture */
768
    SDL_LockMutex(is->pictq_mutex);
769
    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
770
           !is->videoq.abort_request) {
771
        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
772
    }
773
    SDL_UnlockMutex(is->pictq_mutex);
774
    
775
    if (is->videoq.abort_request)
776
        return -1;
777

    
778
    vp = &is->pictq[is->pictq_windex];
779

    
780
    /* alloc or resize hardware picture buffer */
781
    if (!vp->bmp || 
782
        vp->width != is->video_st->codec.width ||
783
        vp->height != is->video_st->codec.height) {
784
        SDL_Event event;
785

    
786
        vp->allocated = 0;
787

    
788
        /* the allocation must be done in the main thread to avoid
789
           locking problems */
790
        event.type = FF_ALLOC_EVENT;
791
        event.user.data1 = is;
792
        SDL_PushEvent(&event);
793
        
794
        /* wait until the picture is allocated */
795
        SDL_LockMutex(is->pictq_mutex);
796
        while (!vp->allocated && !is->videoq.abort_request) {
797
            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
798
        }
799
        SDL_UnlockMutex(is->pictq_mutex);
800

    
801
        if (is->videoq.abort_request)
802
            return -1;
803
    }
804

    
805
    /* if the frame is not skipped, then display it */
806
    if (vp->bmp) {
807
        /* get a pointer on the bitmap */
808
        SDL_LockYUVOverlay (vp->bmp);
809

    
810
        dst_pix_fmt = PIX_FMT_YUV420P;
811
        pict.data[0] = vp->bmp->pixels[0];
812
        pict.data[1] = vp->bmp->pixels[2];
813
        pict.data[2] = vp->bmp->pixels[1];
814

    
815
        pict.linesize[0] = vp->bmp->pitches[0];
816
        pict.linesize[1] = vp->bmp->pitches[2];
817
        pict.linesize[2] = vp->bmp->pitches[1];
818
        img_convert(&pict, dst_pix_fmt, 
819
                    (AVPicture *)src_frame, is->video_st->codec.pix_fmt, 
820
                    is->video_st->codec.width, is->video_st->codec.height);
821
        /* update the bitmap content */
822
        SDL_UnlockYUVOverlay(vp->bmp);
823

    
824
        vp->pts = pts;
825

    
826
        /* now we can update the picture count */
827
        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
828
            is->pictq_windex = 0;
829
        SDL_LockMutex(is->pictq_mutex);
830
        is->pictq_size++;
831
        SDL_UnlockMutex(is->pictq_mutex);
832
    }
833
    return 0;
834
}
835

    
836
/* compute the exact PTS for the picture if it is omitted in the stream */
837
static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
838
{
839
    double frame_delay, pts;
840
    
841
    pts = pts1;
842

    
843
    /* if B frames are present, and if the current picture is a I
844
       or P frame, we use the last pts */
845
    if (is->video_st->codec.has_b_frames && 
846
        src_frame->pict_type != FF_B_TYPE) {
847
        /* use last pts */
848
        pts = is->video_last_P_pts;
849
        /* get the pts for the next I or P frame if present */
850
        is->video_last_P_pts = pts1;
851
    }
852

    
853
    if (pts != 0) {
854
        /* update video clock with pts, if present */
855
        is->video_clock = pts;
856
    } else {
857
        pts = is->video_clock;
858
    }
859
    /* update video clock for next frame */
860
    frame_delay = (double)is->video_st->codec.frame_rate_base / 
861
        (double)is->video_st->codec.frame_rate;
862
    /* for MPEG2, the frame can be repeated, so we update the
863
       clock accordingly */
864
    if (src_frame->repeat_pict) {
865
        frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
866
    }
867
    is->video_clock += frame_delay;
868

    
869
#if defined(DEBUG_SYNC) && 0
870
    {
871
        int ftype;
872
        if (src_frame->pict_type == FF_B_TYPE)
873
            ftype = 'B';
874
        else if (src_frame->pict_type == FF_I_TYPE)
875
            ftype = 'I';
876
        else
877
            ftype = 'P';
878
        printf("frame_type=%c clock=%0.3f pts=%0.3f\n", 
879
               ftype, pts, pts1);
880
    }
881
#endif
882
    return queue_picture(is, src_frame, pts);
883
}
884

    
885
static int video_thread(void *arg)
886
{
887
    VideoState *is = arg;
888
    AVPacket pkt1, *pkt = &pkt1;
889
    int len1, got_picture;
890
    AVFrame *frame= avcodec_alloc_frame();
891
    double pts;
892

    
893
    for(;;) {
894
        while (is->paused && !is->videoq.abort_request) {
895
            SDL_Delay(10);
896
        }
897
        if (packet_queue_get(&is->videoq, pkt, 1) < 0)
898
            break;
899
        /* NOTE: ipts is the PTS of the _first_ picture beginning in
900
           this packet, if any */
901
        pts = 0;
902
        if (pkt->pts != AV_NOPTS_VALUE)
903
            pts = (double)pkt->pts / AV_TIME_BASE;
904

    
905
        if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
906
            avpicture_fill((AVPicture *)frame, pkt->data, 
907
                           is->video_st->codec.pix_fmt,
908
                           is->video_st->codec.width,
909
                           is->video_st->codec.height);
910
            frame->pict_type = FF_I_TYPE;
911
            if (output_picture2(is, frame, pts) < 0)
912
                goto the_end;
913
        } else {
914
            len1 = avcodec_decode_video(&is->video_st->codec, 
915
                                        frame, &got_picture, 
916
                                        pkt->data, pkt->size);
917
//            if (len1 < 0)
918
//                break;
919
            if (got_picture) {
920
                if (output_picture2(is, frame, pts) < 0)
921
                    goto the_end;
922
            }
923
        }
924
        av_free_packet(pkt);
925
        if (step) 
926
            if (cur_stream)
927
                stream_pause(cur_stream);
928
    }
929
 the_end:
930
    av_free(frame);
931
    return 0;
932
}
933

    
934
/* copy samples for viewing in editor window */
935
static void update_sample_display(VideoState *is, short *samples, int samples_size)
936
{
937
    int size, len, channels;
938

    
939
    channels = is->audio_st->codec.channels;
940

    
941
    size = samples_size / sizeof(short);
942
    while (size > 0) {
943
        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
944
        if (len > size)
945
            len = size;
946
        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
947
        samples += len;
948
        is->sample_array_index += len;
949
        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
950
            is->sample_array_index = 0;
951
        size -= len;
952
    }
953
}
954

    
955
/* return the new audio buffer size (samples can be added or deleted
956
   to get better sync if video or external master clock) */
957
static int synchronize_audio(VideoState *is, short *samples, 
958
                             int samples_size1, double pts)
959
{
960
    int n, samples_size;
961
    double ref_clock;
962
    
963
    n = 2 * is->audio_st->codec.channels;
964
    samples_size = samples_size1;
965

    
966
    /* if not master, then we try to remove or add samples to correct the clock */
967
    if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
968
         is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
969
        double diff, avg_diff;
970
        int wanted_size, min_size, max_size, nb_samples;
971
            
972
        ref_clock = get_master_clock(is);
973
        diff = get_audio_clock(is) - ref_clock;
974
        
975
        if (diff < AV_NOSYNC_THRESHOLD) {
976
            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
977
            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
978
                /* not enough measures to have a correct estimate */
979
                is->audio_diff_avg_count++;
980
            } else {
981
                /* estimate the A-V difference */
982
                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
983

    
984
                if (fabs(avg_diff) >= is->audio_diff_threshold) {
985
                    wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
986
                    nb_samples = samples_size / n;
987
                
988
                    min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
989
                    max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
990
                    if (wanted_size < min_size)
991
                        wanted_size = min_size;
992
                    else if (wanted_size > max_size)
993
                        wanted_size = max_size;
994
                    
995
                    /* add or remove samples to correction the synchro */
996
                    if (wanted_size < samples_size) {
997
                        /* remove samples */
998
                        samples_size = wanted_size;
999
                    } else if (wanted_size > samples_size) {
1000
                        uint8_t *samples_end, *q;
1001
                        int nb;
1002
                        
1003
                        /* add samples */
1004
                        nb = (samples_size - wanted_size);
1005
                        samples_end = (uint8_t *)samples + samples_size - n;
1006
                        q = samples_end + n;
1007
                        while (nb > 0) {
1008
                            memcpy(q, samples_end, n);
1009
                            q += n;
1010
                            nb -= n;
1011
                        }
1012
                        samples_size = wanted_size;
1013
                    }
1014
                }
1015
#if 0
1016
                printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n", 
1017
                       diff, avg_diff, samples_size - samples_size1, 
1018
                       is->audio_clock, is->video_clock, is->audio_diff_threshold);
1019
#endif
1020
            }
1021
        } else {
1022
            /* too big difference : may be initial PTS errors, so
1023
               reset A-V filter */
1024
            is->audio_diff_avg_count = 0;
1025
            is->audio_diff_cum = 0;
1026
        }
1027
    }
1028

    
1029
    return samples_size;
1030
}
1031

    
1032
/* decode one audio frame and returns its uncompressed size */
1033
static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1034
{
1035
    AVPacket *pkt = &is->audio_pkt;
1036
    int n, len1, data_size;
1037
    double pts;
1038

    
1039
    for(;;) {
1040
        /* NOTE: the audio packet can contain several frames */
1041
        while (is->audio_pkt_size > 0) {
1042
            len1 = avcodec_decode_audio(&is->audio_st->codec, 
1043
                                        (int16_t *)audio_buf, &data_size, 
1044
                                        is->audio_pkt_data, is->audio_pkt_size);
1045
            if (len1 < 0) {
1046
                /* if error, we skip the frame */
1047
                is->audio_pkt_size = 0;
1048
                break;
1049
            }
1050
            
1051
            is->audio_pkt_data += len1;
1052
            is->audio_pkt_size -= len1;
1053
            if (data_size <= 0)
1054
                continue;
1055
            /* if no pts, then compute it */
1056
            pts = is->audio_clock;
1057
            *pts_ptr = pts;
1058
            n = 2 * is->audio_st->codec.channels;
1059
            is->audio_clock += (double)data_size / 
1060
                (double)(n * is->audio_st->codec.sample_rate);
1061
#if defined(DEBUG_SYNC)
1062
            {
1063
                static double last_clock;
1064
                printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1065
                       is->audio_clock - last_clock,
1066
                       is->audio_clock, pts);
1067
                last_clock = is->audio_clock;
1068
            }
1069
#endif
1070
            return data_size;
1071
        }
1072

    
1073
        /* free the current packet */
1074
        if (pkt->data)
1075
            av_free_packet(pkt);
1076
        
1077
        if (is->paused || is->audioq.abort_request) {
1078
            return -1;
1079
        }
1080
        
1081
        /* read next packet */
1082
        if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1083
            return -1;
1084
        is->audio_pkt_data = pkt->data;
1085
        is->audio_pkt_size = pkt->size;
1086
        
1087
        /* if update the audio clock with the pts */
1088
        if (pkt->pts != AV_NOPTS_VALUE) {
1089
            is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
1090
        }
1091
    }
1092
}
1093

    
1094
/* get the current audio output buffer size, in samples. With SDL, we
1095
   cannot have a precise information */
1096
static int audio_write_get_buf_size(VideoState *is)
1097
{
1098
    return is->audio_hw_buf_size - is->audio_buf_index;
1099
}
1100

    
1101

    
1102
/* prepare a new audio buffer */
1103
void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1104
{
1105
    VideoState *is = opaque;
1106
    int audio_size, len1;
1107
    double pts;
1108

    
1109
    audio_callback_time = av_gettime();
1110
    
1111
    while (len > 0) {
1112
        if (is->audio_buf_index >= is->audio_buf_size) {
1113
           audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1114
           if (audio_size < 0) {
1115
                /* if error, just output silence */
1116
               is->audio_buf_size = 1024;
1117
               memset(is->audio_buf, 0, is->audio_buf_size);
1118
           } else {
1119
               if (is->show_audio)
1120
                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1121
               audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size, 
1122
                                              pts);
1123
               is->audio_buf_size = audio_size;
1124
           }
1125
           is->audio_buf_index = 0;
1126
        }
1127
        len1 = is->audio_buf_size - is->audio_buf_index;
1128
        if (len1 > len)
1129
            len1 = len;
1130
        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1131
        len -= len1;
1132
        stream += len1;
1133
        is->audio_buf_index += len1;
1134
    }
1135
}
1136

    
1137

    
1138
/* open a given stream. Return 0 if OK */
1139
static int stream_component_open(VideoState *is, int stream_index)
1140
{
1141
    AVFormatContext *ic = is->ic;
1142
    AVCodecContext *enc;
1143
    AVCodec *codec;
1144
    SDL_AudioSpec wanted_spec, spec;
1145

    
1146
    if (stream_index < 0 || stream_index >= ic->nb_streams)
1147
        return -1;
1148
    enc = &ic->streams[stream_index]->codec;
1149
    
1150
    /* prepare audio output */
1151
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
1152
        wanted_spec.freq = enc->sample_rate;
1153
        wanted_spec.format = AUDIO_S16SYS;
1154
        /* hack for AC3. XXX: suppress that */
1155
        if (enc->channels > 2)
1156
            enc->channels = 2;
1157
        wanted_spec.channels = enc->channels;
1158
        wanted_spec.silence = 0;
1159
        wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1160
        wanted_spec.callback = sdl_audio_callback;
1161
        wanted_spec.userdata = is;
1162
        if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1163
            fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1164
            return -1;
1165
        }
1166
        is->audio_hw_buf_size = spec.size;
1167
    }
1168

    
1169
    codec = avcodec_find_decoder(enc->codec_id);
1170
    enc->debug_mv = debug_mv;
1171
    enc->debug = debug;
1172
    if (!codec ||
1173
        avcodec_open(enc, codec) < 0)
1174
        return -1;
1175
#if defined(HAVE_PTHREADS) || defined(HAVE_W32THREADS)
1176
    if(thread_count>1)
1177
        avcodec_thread_init(enc, thread_count);
1178
#endif
1179
    enc->thread_count= thread_count;
1180
    switch(enc->codec_type) {
1181
    case CODEC_TYPE_AUDIO:
1182
        is->audio_stream = stream_index;
1183
        is->audio_st = ic->streams[stream_index];
1184
        is->audio_buf_size = 0;
1185
        is->audio_buf_index = 0;
1186

    
1187
        /* init averaging filter */
1188
        is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1189
        is->audio_diff_avg_count = 0;
1190
        /* since we do not have a precise anough audio fifo fullness,
1191
           we correct audio sync only if larger than this threshold */
1192
        is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1193

    
1194
        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1195
        packet_queue_init(&is->audioq);
1196
        SDL_PauseAudio(0);
1197
        break;
1198
    case CODEC_TYPE_VIDEO:
1199
        is->video_stream = stream_index;
1200
        is->video_st = ic->streams[stream_index];
1201

    
1202
        is->frame_last_delay = 40e-3;
1203
        is->frame_timer = (double)av_gettime() / 1000000.0;
1204
        is->video_current_pts_time = av_gettime();
1205

    
1206
        packet_queue_init(&is->videoq);
1207
        is->video_tid = SDL_CreateThread(video_thread, is);
1208
        break;
1209
    default:
1210
        break;
1211
    }
1212
    return 0;
1213
}
1214

    
1215
static void stream_component_close(VideoState *is, int stream_index)
1216
{
1217
    AVFormatContext *ic = is->ic;
1218
    AVCodecContext *enc;
1219
    
1220
    enc = &ic->streams[stream_index]->codec;
1221

    
1222
    switch(enc->codec_type) {
1223
    case CODEC_TYPE_AUDIO:
1224
        packet_queue_abort(&is->audioq);
1225

    
1226
        SDL_CloseAudio();
1227

    
1228
        packet_queue_end(&is->audioq);
1229
        break;
1230
    case CODEC_TYPE_VIDEO:
1231
        packet_queue_abort(&is->videoq);
1232

    
1233
        /* note: we also signal this mutex to make sure we deblock the
1234
           video thread in all cases */
1235
        SDL_LockMutex(is->pictq_mutex);
1236
        SDL_CondSignal(is->pictq_cond);
1237
        SDL_UnlockMutex(is->pictq_mutex);
1238

    
1239
        SDL_WaitThread(is->video_tid, NULL);
1240

    
1241
        packet_queue_end(&is->videoq);
1242
        break;
1243
    default:
1244
        break;
1245
    }
1246

    
1247
    avcodec_close(enc);
1248
    switch(enc->codec_type) {
1249
    case CODEC_TYPE_AUDIO:
1250
        is->audio_st = NULL;
1251
        is->audio_stream = -1;
1252
        break;
1253
    case CODEC_TYPE_VIDEO:
1254
        is->video_st = NULL;
1255
        is->video_stream = -1;
1256
        break;
1257
    default:
1258
        break;
1259
    }
1260
}
1261

    
1262
void dump_stream_info(AVFormatContext *s)
1263
{
1264
    if (s->track != 0)
1265
        fprintf(stderr, "Track: %d\n", s->track);
1266
    if (s->title[0] != '\0')
1267
        fprintf(stderr, "Title: %s\n", s->title);
1268
    if (s->author[0] != '\0')
1269
        fprintf(stderr, "Author: %s\n", s->author);
1270
    if (s->album[0] != '\0')
1271
        fprintf(stderr, "Album: %s\n", s->album);
1272
    if (s->year != 0)
1273
        fprintf(stderr, "Year: %d\n", s->year);
1274
    if (s->genre[0] != '\0')
1275
        fprintf(stderr, "Genre: %s\n", s->genre);
1276
}
1277

    
1278
/* since we have only one decoding thread, we can use a global
1279
   variable instead of a thread local variable */
1280
static VideoState *global_video_state;
1281

    
1282
static int decode_interrupt_cb(void)
1283
{
1284
    return (global_video_state && global_video_state->abort_request);
1285
}
1286

    
1287
/* this thread gets the stream from the disk or the network */
1288
static int decode_thread(void *arg)
1289
{
1290
    VideoState *is = arg;
1291
    AVFormatContext *ic;
1292
    int err, i, ret, video_index, audio_index, use_play;
1293
    AVPacket pkt1, *pkt = &pkt1;
1294
    AVFormatParameters params, *ap = &params;
1295

    
1296
    video_index = -1;
1297
    audio_index = -1;
1298
    is->video_stream = -1;
1299
    is->audio_stream = -1;
1300

    
1301
    global_video_state = is;
1302
    url_set_interrupt_cb(decode_interrupt_cb);
1303

    
1304
    memset(ap, 0, sizeof(*ap));
1305
    ap->image_format = image_format;
1306
    ap->initial_pause = 1; /* we force a pause when starting an RTSP
1307
                              stream */
1308
    
1309
    err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1310
    if (err < 0) {
1311
        print_error(is->filename, err);
1312
        ret = -1;
1313
        goto fail;
1314
    }
1315
    is->ic = ic;
1316
#ifdef CONFIG_NETWORK
1317
    use_play = (ic->iformat == &rtsp_demux);
1318
#else
1319
    use_play = 0;
1320
#endif
1321
    if (!use_play) {
1322
        err = av_find_stream_info(ic);
1323
        if (err < 0) {
1324
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1325
            ret = -1;
1326
            goto fail;
1327
        }
1328
    }
1329

    
1330
    /* if seeking requested, we execute it */
1331
    if (start_time != AV_NOPTS_VALUE) {
1332
        int64_t timestamp;
1333

    
1334
        timestamp = start_time;
1335
        /* add the stream start time */
1336
        if (ic->start_time != AV_NOPTS_VALUE)
1337
            timestamp += ic->start_time;
1338
        ret = av_seek_frame(ic, -1, timestamp);
1339
        if (ret < 0) {
1340
            fprintf(stderr, "%s: could not seek to position %0.3f\n", 
1341
                    is->filename, (double)timestamp / AV_TIME_BASE);
1342
        }
1343
    }
1344

    
1345
    /* now we can begin to play (RTSP stream only) */
1346
    av_read_play(ic);
1347

    
1348
    if (use_play) {
1349
        err = av_find_stream_info(ic);
1350
        if (err < 0) {
1351
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1352
            ret = -1;
1353
            goto fail;
1354
        }
1355
    }
1356

    
1357
    for(i = 0; i < ic->nb_streams; i++) {
1358
        AVCodecContext *enc = &ic->streams[i]->codec;
1359
        switch(enc->codec_type) {
1360
        case CODEC_TYPE_AUDIO:
1361
            if (audio_index < 0 && !audio_disable)
1362
                audio_index = i;
1363
            break;
1364
        case CODEC_TYPE_VIDEO:
1365
            if (video_index < 0 && !video_disable)
1366
                video_index = i;
1367
            break;
1368
        default:
1369
            break;
1370
        }
1371
    }
1372
    if (show_status) {
1373
        dump_format(ic, 0, is->filename, 0);
1374
        dump_stream_info(ic);
1375
    }
1376

    
1377
    /* open the streams */
1378
    if (audio_index >= 0) {
1379
        stream_component_open(is, audio_index);
1380
    }
1381

    
1382
    if (video_index >= 0) {
1383
        stream_component_open(is, video_index);
1384
    } else {
1385
        if (!display_disable)
1386
            is->show_audio = 1;
1387
    }
1388

    
1389
    if (is->video_stream < 0 && is->audio_stream < 0) {
1390
        fprintf(stderr, "%s: could not open codecs\n", is->filename);
1391
        ret = -1;
1392
        goto fail;
1393
    }
1394

    
1395
    for(;;) {
1396
        if (is->abort_request)
1397
            break;
1398
#ifdef CONFIG_NETWORK
1399
        if (is->paused != is->last_paused) {
1400
            is->last_paused = is->paused;
1401
            if (is->paused)
1402
                av_read_pause(ic);
1403
            else
1404
                av_read_play(ic);
1405
        }
1406
        if (is->paused && ic->iformat == &rtsp_demux) {
1407
            /* wait 10 ms to avoid trying to get another packet */
1408
            /* XXX: horrible */
1409
            SDL_Delay(10);
1410
            continue;
1411
        }
1412
#endif
1413
        if (is->seek_req) {
1414
            /* XXX: must lock decoder threads */
1415
            ret = av_seek_frame(is->ic, -1, is->seek_pos);
1416
            if (ret < 0) {
1417
                fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1418
            }else{
1419
                if (is->audio_stream >= 0) {
1420
                    packet_queue_flush(&is->audioq);
1421
                }
1422
                if (is->video_stream >= 0) {
1423
                    packet_queue_flush(&is->videoq);
1424
                    avcodec_flush_buffers(&ic->streams[video_index]->codec);
1425
                }
1426
            }
1427
            is->seek_req = 0;
1428
        }
1429

    
1430
        /* if the queue are full, no need to read more */
1431
        if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1432
            is->videoq.size > MAX_VIDEOQ_SIZE || 
1433
            url_feof(&ic->pb)) {
1434
            /* wait 10 ms */
1435
            SDL_Delay(10);
1436
            continue;
1437
        }
1438
        ret = av_read_frame(ic, pkt);
1439
        if (ret < 0) {
1440
            break;
1441
        }
1442
        if (pkt->stream_index == is->audio_stream) {
1443
            packet_queue_put(&is->audioq, pkt);
1444
        } else if (pkt->stream_index == is->video_stream) {
1445
            packet_queue_put(&is->videoq, pkt);
1446
        } else {
1447
            av_free_packet(pkt);
1448
        }
1449
    }
1450
    /* wait until the end */
1451
    while (!is->abort_request) {
1452
        SDL_Delay(100);
1453
    }
1454

    
1455
    ret = 0;
1456
 fail:
1457
    /* disable interrupting */
1458
    global_video_state = NULL;
1459

    
1460
    /* close each stream */
1461
    if (is->audio_stream >= 0)
1462
        stream_component_close(is, is->audio_stream);
1463
    if (is->video_stream >= 0)
1464
        stream_component_close(is, is->video_stream);
1465
    if (is->ic) {
1466
        av_close_input_file(is->ic);
1467
        is->ic = NULL; /* safety */
1468
    }
1469
    url_set_interrupt_cb(NULL);
1470

    
1471
    if (ret != 0) {
1472
        SDL_Event event;
1473
        
1474
        event.type = FF_QUIT_EVENT;
1475
        event.user.data1 = is;
1476
        SDL_PushEvent(&event);
1477
    }
1478
    return 0;
1479
}
1480

    
1481
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1482
{
1483
    VideoState *is;
1484

    
1485
    is = av_mallocz(sizeof(VideoState));
1486
    if (!is)
1487
        return NULL;
1488
    pstrcpy(is->filename, sizeof(is->filename), filename);
1489
    is->iformat = iformat;
1490
    if (screen) {
1491
        is->width = screen->w;
1492
        is->height = screen->h;
1493
    }
1494
    is->ytop = 0;
1495
    is->xleft = 0;
1496

    
1497
    /* start video display */
1498
    is->pictq_mutex = SDL_CreateMutex();
1499
    is->pictq_cond = SDL_CreateCond();
1500

    
1501
    /* add the refresh timer to draw the picture */
1502
    schedule_refresh(is, 40);
1503

    
1504
    is->av_sync_type = av_sync_type;
1505
    is->parse_tid = SDL_CreateThread(decode_thread, is);
1506
    if (!is->parse_tid) {
1507
        av_free(is);
1508
        return NULL;
1509
    }
1510
    return is;
1511
}
1512

    
1513
static void stream_close(VideoState *is)
1514
{
1515
    VideoPicture *vp;
1516
    int i;
1517
    /* XXX: use a special url_shutdown call to abort parse cleanly */
1518
    is->abort_request = 1;
1519
    SDL_WaitThread(is->parse_tid, NULL);
1520

    
1521
    /* free all pictures */
1522
    for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1523
        vp = &is->pictq[i];
1524
        if (vp->bmp) {
1525
            SDL_FreeYUVOverlay(vp->bmp);
1526
            vp->bmp = NULL;
1527
        }
1528
    }
1529
    SDL_DestroyMutex(is->pictq_mutex);
1530
    SDL_DestroyCond(is->pictq_cond);
1531
}
1532

    
1533
void stream_cycle_channel(VideoState *is, int codec_type)
1534
{
1535
    AVFormatContext *ic = is->ic;
1536
    int start_index, stream_index;
1537
    AVStream *st;
1538

    
1539
    if (codec_type == CODEC_TYPE_VIDEO)
1540
        start_index = is->video_stream;
1541
    else
1542
        start_index = is->audio_stream;
1543
    if (start_index < 0)
1544
        return;
1545
    stream_index = start_index;
1546
    for(;;) {
1547
        if (++stream_index >= is->ic->nb_streams)
1548
            stream_index = 0;
1549
        if (stream_index == start_index)
1550
            return;
1551
        st = ic->streams[stream_index];
1552
        if (st->codec.codec_type == codec_type) {
1553
            /* check that parameters are OK */
1554
            switch(codec_type) {
1555
            case CODEC_TYPE_AUDIO:
1556
                if (st->codec.sample_rate != 0 &&
1557
                    st->codec.channels != 0)
1558
                    goto the_end;
1559
                break;
1560
            case CODEC_TYPE_VIDEO:
1561
                goto the_end;
1562
            default:
1563
                break;
1564
            }
1565
        }
1566
    }
1567
 the_end:
1568
    stream_component_close(is, start_index);
1569
    stream_component_open(is, stream_index);
1570
}
1571

    
1572

    
1573
void toggle_full_screen(void)
1574
{
1575
    int w, h, flags;
1576
    is_full_screen = !is_full_screen;
1577
    if (!fs_screen_width) {
1578
        /* use default SDL method */
1579
        SDL_WM_ToggleFullScreen(screen);
1580
    } else {
1581
        /* use the recorded resolution */
1582
        flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1583
        if (is_full_screen) {
1584
            w = fs_screen_width;
1585
            h = fs_screen_height;
1586
            flags |= SDL_FULLSCREEN;
1587
        } else {
1588
            w = screen_width;
1589
            h = screen_height;
1590
            flags |= SDL_RESIZABLE;
1591
        }
1592
        screen = SDL_SetVideoMode(w, h, 0, flags);
1593
        cur_stream->width = w;
1594
        cur_stream->height = h;
1595
    }
1596
}
1597

    
1598
void toggle_pause(void)
1599
{
1600
    if (cur_stream)
1601
        stream_pause(cur_stream);
1602
    step = 0;
1603
}
1604

    
1605
void step_to_next_frame(void)
1606
{
1607
    if (cur_stream) {
1608
        if (cur_stream->paused)
1609
            cur_stream->paused=0;
1610
        cur_stream->video_current_pts = get_video_clock(cur_stream);
1611
    }
1612
    step = 1;
1613
}
1614

    
1615
void do_exit(void)
1616
{
1617
    if (cur_stream) {
1618
        stream_close(cur_stream);
1619
        cur_stream = NULL;
1620
    }
1621
    if (show_status)
1622
        printf("\n");
1623
    SDL_Quit();
1624
    exit(0);
1625
}
1626

    
1627
void toggle_audio_display(void)
1628
{
1629
    if (cur_stream) {
1630
        cur_stream->show_audio = !cur_stream->show_audio;
1631
    }
1632
}
1633

    
1634
/* handle an event sent by the GUI */
1635
void event_loop(void)
1636
{
1637
    SDL_Event event;
1638
    double incr, pos, frac;
1639

    
1640
    for(;;) {
1641
        SDL_WaitEvent(&event);
1642
        switch(event.type) {
1643
        case SDL_KEYDOWN:
1644
            switch(event.key.keysym.sym) {
1645
            case SDLK_ESCAPE:
1646
            case SDLK_q:
1647
                do_exit();
1648
                break;
1649
            case SDLK_f:
1650
                toggle_full_screen();
1651
                break;
1652
            case SDLK_p:
1653
            case SDLK_SPACE:
1654
                toggle_pause();
1655
                break;
1656
            case SDLK_s: //S: Step to next frame
1657
                step_to_next_frame();
1658
                break;
1659
            case SDLK_a:
1660
                if (cur_stream) 
1661
                    stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1662
                break;
1663
            case SDLK_v:
1664
                if (cur_stream) 
1665
                    stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1666
                break;
1667
            case SDLK_w:
1668
                toggle_audio_display();
1669
                break;
1670
            case SDLK_LEFT:
1671
                incr = -10.0;
1672
                goto do_seek;
1673
            case SDLK_RIGHT:
1674
                incr = 10.0;
1675
                goto do_seek;
1676
            case SDLK_UP:
1677
                incr = 60.0;
1678
                goto do_seek;
1679
            case SDLK_DOWN:
1680
                incr = -60.0;
1681
            do_seek:
1682
                if (cur_stream) {
1683
                    pos = get_master_clock(cur_stream);
1684
                    pos += incr;
1685
                    stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE));
1686
                }
1687
                break;
1688
            default:
1689
                break;
1690
            }
1691
            break;
1692
        case SDL_MOUSEBUTTONDOWN:
1693
            if (cur_stream) {
1694
                int ns, hh, mm, ss;
1695
                int tns, thh, tmm, tss;
1696
                tns = cur_stream->ic->duration/1000000LL;
1697
                thh = tns/3600;
1698
                tmm = (tns%3600)/60;
1699
                tss = (tns%60);
1700
                frac = (double)event.button.x/(double)cur_stream->width;
1701
                ns = frac*tns;
1702
                hh = ns/3600;
1703
                mm = (ns%3600)/60;
1704
                ss = (ns%60);
1705
                fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
1706
                        hh, mm, ss, thh, tmm, tss);
1707
                stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration));
1708
            }
1709
            break;
1710
        case SDL_VIDEORESIZE:
1711
            if (cur_stream) {
1712
                screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0, 
1713
                                          SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1714
                cur_stream->width = event.resize.w;
1715
                cur_stream->height = event.resize.h;
1716
            }
1717
            break;
1718
        case SDL_QUIT:
1719
        case FF_QUIT_EVENT:
1720
            do_exit();
1721
            break;
1722
        case FF_ALLOC_EVENT:
1723
            alloc_picture(event.user.data1);
1724
            break;
1725
        case FF_REFRESH_EVENT:
1726
            video_refresh_timer(event.user.data1);
1727
            break;
1728
        default:
1729
            break;
1730
        }
1731
    }
1732
}
1733

    
1734
void opt_width(const char *arg)
1735
{
1736
    screen_width = atoi(arg);
1737
}
1738

    
1739
void opt_height(const char *arg)
1740
{
1741
    screen_height = atoi(arg);
1742
}
1743

    
1744
static void opt_format(const char *arg)
1745
{
1746
    file_iformat = av_find_input_format(arg);
1747
    if (!file_iformat) {
1748
        fprintf(stderr, "Unknown input format: %s\n", arg);
1749
        exit(1);
1750
    }
1751
}
1752

    
1753
static void opt_image_format(const char *arg)
1754
{
1755
    AVImageFormat *f;
1756
    
1757
    for(f = first_image_format; f != NULL; f = f->next) {
1758
        if (!strcmp(arg, f->name))
1759
            break;
1760
    }
1761
    if (!f) {
1762
        fprintf(stderr, "Unknown image format: '%s'\n", arg);
1763
        exit(1);
1764
    }
1765
    image_format = f;
1766
}
1767

    
1768
#ifdef CONFIG_NETWORK
1769
void opt_rtp_tcp(void)
1770
{
1771
    /* only tcp protocol */
1772
    rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1773
}
1774
#endif
1775

    
1776
void opt_sync(const char *arg)
1777
{
1778
    if (!strcmp(arg, "audio"))
1779
        av_sync_type = AV_SYNC_AUDIO_MASTER;
1780
    else if (!strcmp(arg, "video"))
1781
        av_sync_type = AV_SYNC_VIDEO_MASTER;
1782
    else if (!strcmp(arg, "ext"))
1783
        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1784
    else
1785
        show_help();
1786
}
1787

    
1788
void opt_seek(const char *arg)
1789
{
1790
    start_time = parse_date(arg, 1);
1791
}
1792

    
1793
static void opt_debug(const char *arg)
1794
{
1795
    debug = atoi(arg);
1796
}
1797
    
1798
static void opt_vismv(const char *arg)
1799
{
1800
    debug_mv = atoi(arg);
1801
}
1802

    
1803
static void opt_thread_count(const char *arg)
1804
{
1805
    thread_count= atoi(arg);
1806
#if !defined(HAVE_PTHREADS) && !defined(HAVE_W32THREADS)
1807
    fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1808
#endif
1809
}
1810
    
1811
const OptionDef options[] = {
1812
    { "h", 0, {(void*)show_help}, "show help" },    
1813
    { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1814
    { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1815
#if 0
1816
    /* disabled as SDL/X11 does not support it correctly on application launch */
1817
    { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1818
#endif
1819
    { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1820
    { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1821
    { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1822
    { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1823
    { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1824
    { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1825
    { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1826
    { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1827
    { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1828
#ifdef CONFIG_NETWORK
1829
    { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1830
#endif
1831
    { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1832
    { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1833
    { NULL, },
1834
};
1835

    
1836
void show_help(void)
1837
{
1838
    printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1839
           "usage: ffplay [options] input_file\n"
1840
           "Simple media player\n");
1841
    printf("\n");
1842
    show_help_options(options, "Main options:\n",
1843
                      OPT_EXPERT, 0);
1844
    show_help_options(options, "\nAdvanced options:\n",
1845
                      OPT_EXPERT, OPT_EXPERT);
1846
    printf("\nWhile playing:\n"
1847
           "q, ESC              quit\n"
1848
           "f                   toggle full screen\n"
1849
           "p, SPC              pause\n"
1850
           "a                   cycle audio channel\n"
1851
           "v                   cycle video channel\n"
1852
           "w                   show audio waves\n"
1853
           "left/right          seek backward/forward 10 seconds\n"
1854
           "down/up             seek backward/forward 1 minute\n"
1855
           "mouse click         seek to percentage in file corresponding to fraction of width\n"
1856
           );
1857
    exit(1);
1858
}
1859

    
1860
void parse_arg_file(const char *filename)
1861
{
1862
    if (!strcmp(filename, "-"))
1863
                    filename = "pipe:";
1864
    input_filename = filename;
1865
}
1866

    
1867
/* Called from the main */
1868
int main(int argc, char **argv)
1869
{
1870
    int flags, w, h;
1871
    
1872
    /* register all codecs, demux and protocols */
1873
    av_register_all();
1874

    
1875
    parse_options(argc, argv, options);
1876

    
1877
    if (!input_filename)
1878
        show_help();
1879

    
1880
    if (display_disable) {
1881
        video_disable = 1;
1882
    }
1883
    flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1884
#ifndef CONFIG_WIN32
1885
    flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1886
#endif
1887
    if (SDL_Init (flags)) {
1888
        fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1889
        exit(1);
1890
    }
1891

    
1892
    if (!display_disable) {
1893
#ifdef HAVE_X11
1894
        /* save the screen resolution... SDL should allow full screen
1895
           by resizing the window */
1896
        {
1897
            Display *dpy;
1898
            dpy = XOpenDisplay(NULL);
1899
            if (dpy) {
1900
                fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1901
                fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1902
                XCloseDisplay(dpy);
1903
            }
1904
        }
1905
#endif
1906
        flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1907
        if (is_full_screen && fs_screen_width) {
1908
            w = fs_screen_width;
1909
            h = fs_screen_height;
1910
            flags |= SDL_FULLSCREEN;
1911
        } else {
1912
            w = screen_width;
1913
            h = screen_height;
1914
            flags |= SDL_RESIZABLE;
1915
        }
1916
        screen = SDL_SetVideoMode(w, h, 0, flags);
1917
        if (!screen) {
1918
            fprintf(stderr, "SDL: could not set video mode - exiting\n");
1919
            exit(1);
1920
        }
1921
        SDL_WM_SetCaption("FFplay", "FFplay");
1922
    }
1923

    
1924
    SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1925
    SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1926
    SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1927
    SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1928

    
1929
    cur_stream = stream_open(input_filename, file_iformat);
1930

    
1931
    event_loop();
1932

    
1933
    /* never returns */
1934

    
1935
    return 0;
1936
}