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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,
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
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#undef main /* We don't want SDL to override our main() */
29
#endif
30

    
31
#ifdef CONFIG_OS2
32
#define INCL_DOS
33
 #include <os2.h>
34
 #include <stdio.h>
35
 
36
 void MorphToPM()
37
 {
38
   PPIB pib;
39
   PTIB tib;
40
 
41
   DosGetInfoBlocks(&tib, &pib);
42
 
43
   // Change flag from VIO to PM:
44
   if (pib->pib_ultype==2) pib->pib_ultype = 3;
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 }
46
#endif
47

    
48
#if defined(__linux__)
49
#define HAVE_X11
50
#endif
51

    
52
#ifdef HAVE_X11
53
#include <X11/Xlib.h>
54
#endif
55

    
56
//#define DEBUG_SYNC
57

    
58
#define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
59
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
60

    
61
/* SDL audio buffer size, in samples. Should be small to have precise
62
   A/V sync as SDL does not have hardware buffer fullness info. */
63
#define SDL_AUDIO_BUFFER_SIZE 1024
64

    
65
/* no AV sync correction is done if below the AV sync threshold */
66
#define AV_SYNC_THRESHOLD 0.01
67
/* no AV correction is done if too big error */
68
#define AV_NOSYNC_THRESHOLD 10.0
69

    
70
/* maximum audio speed change to get correct sync */
71
#define SAMPLE_CORRECTION_PERCENT_MAX 10
72

    
73
/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
74
#define AUDIO_DIFF_AVG_NB   20
75

    
76
/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
77
#define SAMPLE_ARRAY_SIZE (2*65536)
78

    
79
typedef struct PacketQueue {
80
    AVPacketList *first_pkt, *last_pkt;
81
    int nb_packets;
82
    int size;
83
    int abort_request;
84
    SDL_mutex *mutex;
85
    SDL_cond *cond;
86
} PacketQueue;
87

    
88
#define VIDEO_PICTURE_QUEUE_SIZE 1
89

    
90
typedef struct VideoPicture {
91
    double pts; /* presentation time stamp for this picture */
92
    SDL_Overlay *bmp;
93
    int width, height; /* source height & width */
94
    int allocated;
95
} VideoPicture;
96

    
97
enum {
98
    AV_SYNC_AUDIO_MASTER, /* default choice */
99
    AV_SYNC_VIDEO_MASTER,
100
    AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
101
};
102

    
103
typedef struct VideoState {
104
    SDL_Thread *parse_tid;
105
    SDL_Thread *video_tid;
106
    AVInputFormat *iformat;
107
    int no_background;
108
    int abort_request;
109
    int paused;
110
    int last_paused;
111
    int seek_req;
112
    int seek_flags;
113
    int64_t seek_pos;
114
    AVFormatContext *ic;
115
    int dtg_active_format;
116

    
117
    int audio_stream;
118
    
119
    int av_sync_type;
120
    double external_clock; /* external clock base */
121
    int64_t external_clock_time;
122
    
123
    double audio_clock;
124
    double audio_diff_cum; /* used for AV difference average computation */
125
    double audio_diff_avg_coef;
126
    double audio_diff_threshold;
127
    int audio_diff_avg_count;
128
    AVStream *audio_st;
129
    PacketQueue audioq;
130
    int audio_hw_buf_size;
131
    /* samples output by the codec. we reserve more space for avsync
132
       compensation */
133
    uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]; 
134
    unsigned int audio_buf_size; /* in bytes */
135
    int audio_buf_index; /* in bytes */
136
    AVPacket audio_pkt;
137
    uint8_t *audio_pkt_data;
138
    int audio_pkt_size;
139
    
140
    int show_audio; /* if true, display audio samples */
141
    int16_t sample_array[SAMPLE_ARRAY_SIZE];
142
    int sample_array_index;
143
    int last_i_start;
144
    
145
    double frame_timer;
146
    double frame_last_pts;
147
    double frame_last_delay;
148
    double video_clock;
149
    int video_stream;
150
    AVStream *video_st;
151
    PacketQueue videoq;
152
    double video_last_P_pts; /* pts of the last P picture (needed if B
153
                                frames are present) */
154
    double video_current_pts; /* current displayed pts (different from
155
                                 video_clock if frame fifos are used) */
156
    int64_t video_current_pts_time; /* time at which we updated
157
                                       video_current_pts - used to
158
                                       have running video pts */
159
    VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
160
    int pictq_size, pictq_rindex, pictq_windex;
161
    SDL_mutex *pictq_mutex;
162
    SDL_cond *pictq_cond;
163
    
164
    SDL_mutex *video_decoder_mutex;
165
    SDL_mutex *audio_decoder_mutex;
166

    
167
    //    QETimer *video_timer;
168
    char filename[1024];
169
    int width, height, xleft, ytop;
170
} VideoState;
171

    
172
void show_help(void);
173
static int audio_write_get_buf_size(VideoState *is);
174

    
175
/* options specified by the user */
176
static AVInputFormat *file_iformat;
177
static AVImageFormat *image_format;
178
static const char *input_filename;
179
static int fs_screen_width;
180
static int fs_screen_height;
181
static int screen_width = 640;
182
static int screen_height = 480;
183
static int audio_disable;
184
static int video_disable;
185
static int display_disable;
186
static int show_status;
187
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
188
static int64_t start_time = AV_NOPTS_VALUE;
189
static int debug = 0;
190
static int debug_mv = 0;
191
static int step = 0;
192
static int thread_count = 1;
193
static int workaround_bugs = 1;
194
static int fast = 0;
195
static int lowres = 0;
196
static int idct = FF_IDCT_AUTO;
197
static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
198
static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
199
static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
200

    
201
/* current context */
202
static int is_full_screen;
203
static VideoState *cur_stream;
204
static int64_t audio_callback_time;
205

    
206
#define FF_ALLOC_EVENT   (SDL_USEREVENT)
207
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
208
#define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
209

    
210
SDL_Surface *screen;
211

    
212
/* packet queue handling */
213
static void packet_queue_init(PacketQueue *q)
214
{
215
    memset(q, 0, sizeof(PacketQueue));
216
    q->mutex = SDL_CreateMutex();
217
    q->cond = SDL_CreateCond();
218
}
219

    
220
static void packet_queue_flush(PacketQueue *q)
221
{
222
    AVPacketList *pkt, *pkt1;
223

    
224
    SDL_LockMutex(q->mutex);
225
    for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
226
        pkt1 = pkt->next;
227
        av_free_packet(&pkt->pkt);
228
        av_freep(&pkt);
229
    }
230
    q->last_pkt = NULL;
231
    q->first_pkt = NULL;
232
    q->nb_packets = 0;
233
    q->size = 0;
234
    SDL_UnlockMutex(q->mutex);
235
}
236

    
237
static void packet_queue_end(PacketQueue *q)
238
{
239
    packet_queue_flush(q);
240
    SDL_DestroyMutex(q->mutex);
241
    SDL_DestroyCond(q->cond);
242
}
243

    
244
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
245
{
246
    AVPacketList *pkt1;
247

    
248
    /* duplicate the packet */
249
    if (av_dup_packet(pkt) < 0)
250
        return -1;
251
    
252
    pkt1 = av_malloc(sizeof(AVPacketList));
253
    if (!pkt1)
254
        return -1;
255
    pkt1->pkt = *pkt;
256
    pkt1->next = NULL;
257

    
258

    
259
    SDL_LockMutex(q->mutex);
260

    
261
    if (!q->last_pkt)
262

    
263
        q->first_pkt = pkt1;
264
    else
265
        q->last_pkt->next = pkt1;
266
    q->last_pkt = pkt1;
267
    q->nb_packets++;
268
    q->size += pkt1->pkt.size;
269
    /* XXX: should duplicate packet data in DV case */
270
    SDL_CondSignal(q->cond);
271

    
272
    SDL_UnlockMutex(q->mutex);
273
    return 0;
274
}
275

    
276
static void packet_queue_abort(PacketQueue *q)
277
{
278
    SDL_LockMutex(q->mutex);
279

    
280
    q->abort_request = 1;
281
    
282
    SDL_CondSignal(q->cond);
283

    
284
    SDL_UnlockMutex(q->mutex);
285
}
286

    
287
/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
288
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
289
{
290
    AVPacketList *pkt1;
291
    int ret;
292

    
293
    SDL_LockMutex(q->mutex);
294

    
295
    for(;;) {
296
        if (q->abort_request) {
297
            ret = -1;
298
            break;
299
        }
300
            
301
        pkt1 = q->first_pkt;
302
        if (pkt1) {
303
            q->first_pkt = pkt1->next;
304
            if (!q->first_pkt)
305
                q->last_pkt = NULL;
306
            q->nb_packets--;
307
            q->size -= pkt1->pkt.size;
308
            *pkt = pkt1->pkt;
309
            av_free(pkt1);
310
            ret = 1;
311
            break;
312
        } else if (!block) {
313
            ret = 0;
314
            break;
315
        } else {
316
            SDL_CondWait(q->cond, q->mutex);
317
        }
318
    }
319
    SDL_UnlockMutex(q->mutex);
320
    return ret;
321
}
322

    
323
static inline void fill_rectangle(SDL_Surface *screen, 
324
                                  int x, int y, int w, int h, int color)
325
{
326
    SDL_Rect rect;
327
    rect.x = x;
328
    rect.y = y;
329
    rect.w = w;
330
    rect.h = h;
331
    SDL_FillRect(screen, &rect, color);
332
}
333

    
334
#if 0
335
/* draw only the border of a rectangle */
336
void fill_border(VideoState *s, int x, int y, int w, int h, int color)
337
{
338
    int w1, w2, h1, h2;
339

340
    /* fill the background */
341
    w1 = x;
342
    if (w1 < 0)
343
        w1 = 0;
344
    w2 = s->width - (x + w);
345
    if (w2 < 0)
346
        w2 = 0;
347
    h1 = y;
348
    if (h1 < 0)
349
        h1 = 0;
350
    h2 = s->height - (y + h);
351
    if (h2 < 0)
352
        h2 = 0;
353
    fill_rectangle(screen, 
354
                   s->xleft, s->ytop, 
355
                   w1, s->height, 
356
                   color);
357
    fill_rectangle(screen, 
358
                   s->xleft + s->width - w2, s->ytop, 
359
                   w2, s->height, 
360
                   color);
361
    fill_rectangle(screen, 
362
                   s->xleft + w1, s->ytop, 
363
                   s->width - w1 - w2, h1, 
364
                   color);
365
    fill_rectangle(screen, 
366
                   s->xleft + w1, s->ytop + s->height - h2,
367
                   s->width - w1 - w2, h2,
368
                   color);
369
}
370
#endif
371

    
372
static void video_image_display(VideoState *is)
373
{
374
    VideoPicture *vp;
375
    float aspect_ratio;
376
    int width, height, x, y;
377
    SDL_Rect rect;
378

    
379
    vp = &is->pictq[is->pictq_rindex];
380
    if (vp->bmp) {
381
        /* XXX: use variable in the frame */
382
        if (is->video_st->codec.sample_aspect_ratio.num == 0) 
383
            aspect_ratio = 0;
384
        else
385
            aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio) 
386
                * is->video_st->codec.width / is->video_st->codec.height;;
387
        if (aspect_ratio <= 0.0)
388
            aspect_ratio = (float)is->video_st->codec.width / 
389
                (float)is->video_st->codec.height;
390
        /* if an active format is indicated, then it overrides the
391
           mpeg format */
392
#if 0
393
        if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
394
            is->dtg_active_format = is->video_st->codec.dtg_active_format;
395
            printf("dtg_active_format=%d\n", is->dtg_active_format);
396
        }
397
#endif
398
#if 0
399
        switch(is->video_st->codec.dtg_active_format) {
400
        case FF_DTG_AFD_SAME:
401
        default:
402
            /* nothing to do */
403
            break;
404
        case FF_DTG_AFD_4_3:
405
            aspect_ratio = 4.0 / 3.0;
406
            break;
407
        case FF_DTG_AFD_16_9:
408
            aspect_ratio = 16.0 / 9.0;
409
            break;
410
        case FF_DTG_AFD_14_9:
411
            aspect_ratio = 14.0 / 9.0;
412
            break;
413
        case FF_DTG_AFD_4_3_SP_14_9:
414
            aspect_ratio = 14.0 / 9.0;
415
            break;
416
        case FF_DTG_AFD_16_9_SP_14_9:
417
            aspect_ratio = 14.0 / 9.0;
418
            break;
419
        case FF_DTG_AFD_SP_4_3:
420
            aspect_ratio = 4.0 / 3.0;
421
            break;
422
        }
423
#endif
424

    
425
        /* XXX: we suppose the screen has a 1.0 pixel ratio */
426
        height = is->height;
427
        width = ((int)rint(height * aspect_ratio)) & -3;
428
        if (width > is->width) {
429
            width = is->width;
430
            height = ((int)rint(width / aspect_ratio)) & -3;
431
        }
432
        x = (is->width - width) / 2;
433
        y = (is->height - height) / 2;
434
        if (!is->no_background) {
435
            /* fill the background */
436
            //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
437
        } else {
438
            is->no_background = 0;
439
        }
440
        rect.x = is->xleft + x;
441
        rect.y = is->xleft + y;
442
        rect.w = width;
443
        rect.h = height;
444
        SDL_DisplayYUVOverlay(vp->bmp, &rect);
445
    } else {
446
#if 0
447
        fill_rectangle(screen, 
448
                       is->xleft, is->ytop, is->width, is->height, 
449
                       QERGB(0x00, 0x00, 0x00));
450
#endif
451
    }
452
}
453

    
454
static inline int compute_mod(int a, int b)
455
{
456
    a = a % b;
457
    if (a >= 0) 
458
        return a;
459
    else
460
        return a + b;
461
}
462

    
463
static void video_audio_display(VideoState *s)
464
{
465
    int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
466
    int ch, channels, h, h2, bgcolor, fgcolor;
467
    int16_t time_diff;
468
    
469
    /* compute display index : center on currently output samples */
470
    channels = s->audio_st->codec.channels;
471
    nb_display_channels = channels;
472
    if (!s->paused) {
473
        n = 2 * channels;
474
        delay = audio_write_get_buf_size(s);
475
        delay /= n;
476
        
477
        /* to be more precise, we take into account the time spent since
478
           the last buffer computation */
479
        if (audio_callback_time) {
480
            time_diff = av_gettime() - audio_callback_time;
481
            delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
482
        }
483
        
484
        delay -= s->width / 2;
485
        if (delay < s->width)
486
            delay = s->width;
487
        i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
488
        s->last_i_start = i_start;
489
    } else {
490
        i_start = s->last_i_start;
491
    }
492

    
493
    bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
494
    fill_rectangle(screen, 
495
                   s->xleft, s->ytop, s->width, s->height, 
496
                   bgcolor);
497

    
498
    fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
499

    
500
    /* total height for one channel */
501
    h = s->height / nb_display_channels;
502
    /* graph height / 2 */
503
    h2 = (h * 9) / 20;
504
    for(ch = 0;ch < nb_display_channels; ch++) {
505
        i = i_start + ch;
506
        y1 = s->ytop + ch * h + (h / 2); /* position of center line */
507
        for(x = 0; x < s->width; x++) {
508
            y = (s->sample_array[i] * h2) >> 15;
509
            if (y < 0) {
510
                y = -y;
511
                ys = y1 - y;
512
            } else {
513
                ys = y1;
514
            }
515
            fill_rectangle(screen, 
516
                           s->xleft + x, ys, 1, y, 
517
                           fgcolor);
518
            i += channels;
519
            if (i >= SAMPLE_ARRAY_SIZE)
520
                i -= SAMPLE_ARRAY_SIZE;
521
        }
522
    }
523

    
524
    fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
525

    
526
    for(ch = 1;ch < nb_display_channels; ch++) {
527
        y = s->ytop + ch * h;
528
        fill_rectangle(screen, 
529
                       s->xleft, y, s->width, 1, 
530
                       fgcolor);
531
    }
532
    SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
533
}
534

    
535
/* display the current picture, if any */
536
static void video_display(VideoState *is)
537
{
538
    if (is->audio_st && is->show_audio) 
539
        video_audio_display(is);
540
    else if (is->video_st)
541
        video_image_display(is);
542
}
543

    
544
static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
545
{
546
    SDL_Event event;
547
    event.type = FF_REFRESH_EVENT;
548
    event.user.data1 = opaque;
549
    SDL_PushEvent(&event);
550
    return 0; /* 0 means stop timer */
551
}
552

    
553
/* schedule a video refresh in 'delay' ms */
554
static void schedule_refresh(VideoState *is, int delay)
555
{
556
    SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
557
}
558

    
559
/* get the current audio clock value */
560
static double get_audio_clock(VideoState *is)
561
{
562
    double pts;
563
    int hw_buf_size, bytes_per_sec;
564
    pts = is->audio_clock;
565
    hw_buf_size = audio_write_get_buf_size(is);
566
    bytes_per_sec = 0;
567
    if (is->audio_st) {
568
        bytes_per_sec = is->audio_st->codec.sample_rate * 
569
            2 * is->audio_st->codec.channels;
570
    }
571
    if (bytes_per_sec)
572
        pts -= (double)hw_buf_size / bytes_per_sec;
573
    return pts;
574
}
575

    
576
/* get the current video clock value */
577
static double get_video_clock(VideoState *is)
578
{
579
    double delta;
580
    if (is->paused) {
581
        delta = 0;
582
    } else {
583
        delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
584
    }
585
    return is->video_current_pts + delta;
586
}
587

    
588
/* get the current external clock value */
589
static double get_external_clock(VideoState *is)
590
{
591
    int64_t ti;
592
    ti = av_gettime();
593
    return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
594
}
595

    
596
/* get the current master clock value */
597
static double get_master_clock(VideoState *is)
598
{
599
    double val;
600

    
601
    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
602
        if (is->video_st)
603
            val = get_video_clock(is);
604
        else
605
            val = get_audio_clock(is);
606
    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
607
        if (is->audio_st)
608
            val = get_audio_clock(is);
609
        else
610
            val = get_video_clock(is);
611
    } else {
612
        val = get_external_clock(is);
613
    }
614
    return val;
615
}
616

    
617
/* seek in the stream */
618
static void stream_seek(VideoState *is, int64_t pos, int rel)
619
{
620
    if (!is->seek_req) {
621
        is->seek_pos = pos;
622
        is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
623
        is->seek_req = 1;
624
    }
625
}
626

    
627
/* pause or resume the video */
628
static void stream_pause(VideoState *is)
629
{
630
    is->paused = !is->paused;
631
    if (is->paused) {
632
        is->video_current_pts = get_video_clock(is);
633
    }
634
}
635

    
636
/* called to display each frame */
637
static void video_refresh_timer(void *opaque)
638
{
639
    VideoState *is = opaque;
640
    VideoPicture *vp;
641
    double actual_delay, delay, sync_threshold, ref_clock, diff;
642

    
643

    
644
    if (is->video_st) {
645
        if (is->pictq_size == 0) {
646
            /* if no picture, need to wait */
647
            schedule_refresh(is, 1);
648
        } else {
649
            /* dequeue the picture */
650
            vp = &is->pictq[is->pictq_rindex];
651

    
652
            /* update current video pts */
653
            is->video_current_pts = vp->pts;
654
            is->video_current_pts_time = av_gettime();
655

    
656
            /* compute nominal delay */
657
            delay = vp->pts - is->frame_last_pts;
658
            if (delay <= 0 || delay >= 1.0) {
659
                /* if incorrect delay, use previous one */
660
                delay = is->frame_last_delay;
661
            }
662
            is->frame_last_delay = delay;
663
            is->frame_last_pts = vp->pts;
664

    
665
            /* update delay to follow master synchronisation source */
666
            if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
667
                 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
668
                /* if video is slave, we try to correct big delays by
669
                   duplicating or deleting a frame */
670
                ref_clock = get_master_clock(is);
671
                diff = vp->pts - ref_clock;
672
                
673
                /* skip or repeat frame. We take into account the
674
                   delay to compute the threshold. I still don't know
675
                   if it is the best guess */
676
                sync_threshold = AV_SYNC_THRESHOLD;
677
                if (delay > sync_threshold)
678
                    sync_threshold = delay;
679
                if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
680
                    if (diff <= -sync_threshold)
681
                        delay = 0;
682
                    else if (diff >= sync_threshold)
683
                        delay = 2 * delay;
684
                }
685
            }
686

    
687
            is->frame_timer += delay;
688
            /* compute the REAL delay (we need to do that to avoid
689
               long term errors */
690
            actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
691
            if (actual_delay < 0.010) {
692
                /* XXX: should skip picture */
693
                actual_delay = 0.010;
694
            }
695
            /* launch timer for next picture */
696
            schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
697

    
698
#if defined(DEBUG_SYNC)
699
            printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n", 
700
                   delay, actual_delay, vp->pts, -diff);
701
#endif
702

    
703
            /* display picture */
704
            video_display(is);
705
            
706
            /* update queue size and signal for next picture */
707
            if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
708
                is->pictq_rindex = 0;
709
            
710
            SDL_LockMutex(is->pictq_mutex);
711
            is->pictq_size--;
712
            SDL_CondSignal(is->pictq_cond);
713
            SDL_UnlockMutex(is->pictq_mutex);
714
        }
715
    } else if (is->audio_st) {
716
        /* draw the next audio frame */
717

    
718
        schedule_refresh(is, 40);
719

    
720
        /* if only audio stream, then display the audio bars (better
721
           than nothing, just to test the implementation */
722
        
723
        /* display picture */
724
        video_display(is);
725
    } else {
726
        schedule_refresh(is, 100);
727
    }
728
    if (show_status) {
729
        static int64_t last_time;
730
        int64_t cur_time;
731
        int aqsize, vqsize;
732
        double av_diff;
733
        
734
        cur_time = av_gettime();
735
        if (!last_time || (cur_time - last_time) >= 500 * 1000) {
736
            aqsize = 0;
737
            vqsize = 0;
738
            if (is->audio_st)
739
                aqsize = is->audioq.size;
740
            if (is->video_st)
741
                vqsize = is->videoq.size;
742
            av_diff = 0;
743
            if (is->audio_st && is->video_st)
744
                av_diff = get_audio_clock(is) - get_video_clock(is);
745
            printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB    \r", 
746
                   get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
747
            fflush(stdout);
748
            last_time = cur_time;
749
        }
750
    }
751
}
752

    
753
/* allocate a picture (needs to do that in main thread to avoid
754
   potential locking problems */
755
static void alloc_picture(void *opaque)
756
{
757
    VideoState *is = opaque;
758
    VideoPicture *vp;
759

    
760
    vp = &is->pictq[is->pictq_windex];
761

    
762
    if (vp->bmp)
763
        SDL_FreeYUVOverlay(vp->bmp);
764

    
765
#if 0
766
    /* XXX: use generic function */
767
    /* XXX: disable overlay if no hardware acceleration or if RGB format */
768
    switch(is->video_st->codec.pix_fmt) {
769
    case PIX_FMT_YUV420P:
770
    case PIX_FMT_YUV422P:
771
    case PIX_FMT_YUV444P:
772
    case PIX_FMT_YUV422:
773
    case PIX_FMT_YUV410P:
774
    case PIX_FMT_YUV411P:
775
        is_yuv = 1;
776
        break;
777
    default:
778
        is_yuv = 0;
779
        break;
780
    }
781
#endif
782
    vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
783
                                   is->video_st->codec.height,
784
                                   SDL_YV12_OVERLAY, 
785
                                   screen);
786
    vp->width = is->video_st->codec.width;
787
    vp->height = is->video_st->codec.height;
788

    
789
    SDL_LockMutex(is->pictq_mutex);
790
    vp->allocated = 1;
791
    SDL_CondSignal(is->pictq_cond);
792
    SDL_UnlockMutex(is->pictq_mutex);
793
}
794

    
795
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
796
{
797
    VideoPicture *vp;
798
    int dst_pix_fmt;
799
    AVPicture pict;
800
    
801
    /* wait until we have space to put a new picture */
802
    SDL_LockMutex(is->pictq_mutex);
803
    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
804
           !is->videoq.abort_request) {
805
        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
806
    }
807
    SDL_UnlockMutex(is->pictq_mutex);
808
    
809
    if (is->videoq.abort_request)
810
        return -1;
811

    
812
    vp = &is->pictq[is->pictq_windex];
813

    
814
    /* alloc or resize hardware picture buffer */
815
    if (!vp->bmp || 
816
        vp->width != is->video_st->codec.width ||
817
        vp->height != is->video_st->codec.height) {
818
        SDL_Event event;
819

    
820
        vp->allocated = 0;
821

    
822
        /* the allocation must be done in the main thread to avoid
823
           locking problems */
824
        event.type = FF_ALLOC_EVENT;
825
        event.user.data1 = is;
826
        SDL_PushEvent(&event);
827
        
828
        /* wait until the picture is allocated */
829
        SDL_LockMutex(is->pictq_mutex);
830
        while (!vp->allocated && !is->videoq.abort_request) {
831
            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
832
        }
833
        SDL_UnlockMutex(is->pictq_mutex);
834

    
835
        if (is->videoq.abort_request)
836
            return -1;
837
    }
838

    
839
    /* if the frame is not skipped, then display it */
840
    if (vp->bmp) {
841
        /* get a pointer on the bitmap */
842
        SDL_LockYUVOverlay (vp->bmp);
843

    
844
        dst_pix_fmt = PIX_FMT_YUV420P;
845
        pict.data[0] = vp->bmp->pixels[0];
846
        pict.data[1] = vp->bmp->pixels[2];
847
        pict.data[2] = vp->bmp->pixels[1];
848

    
849
        pict.linesize[0] = vp->bmp->pitches[0];
850
        pict.linesize[1] = vp->bmp->pitches[2];
851
        pict.linesize[2] = vp->bmp->pitches[1];
852
        img_convert(&pict, dst_pix_fmt, 
853
                    (AVPicture *)src_frame, is->video_st->codec.pix_fmt, 
854
                    is->video_st->codec.width, is->video_st->codec.height);
855
        /* update the bitmap content */
856
        SDL_UnlockYUVOverlay(vp->bmp);
857

    
858
        vp->pts = pts;
859

    
860
        /* now we can update the picture count */
861
        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
862
            is->pictq_windex = 0;
863
        SDL_LockMutex(is->pictq_mutex);
864
        is->pictq_size++;
865
        SDL_UnlockMutex(is->pictq_mutex);
866
    }
867
    return 0;
868
}
869

    
870
/* compute the exact PTS for the picture if it is omitted in the stream */
871
static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
872
{
873
    double frame_delay, pts;
874
    
875
    pts = pts1;
876

    
877
    if (pts != 0) {
878
        /* update video clock with pts, if present */
879
        is->video_clock = pts;
880
    } else {
881
        pts = is->video_clock;
882
    }
883
    /* update video clock for next frame */
884
    frame_delay = av_q2d(is->video_st->codec.time_base);
885
    /* for MPEG2, the frame can be repeated, so we update the
886
       clock accordingly */
887
    if (src_frame->repeat_pict) {
888
        frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
889
    }
890
    is->video_clock += frame_delay;
891

    
892
#if defined(DEBUG_SYNC) && 0
893
    {
894
        int ftype;
895
        if (src_frame->pict_type == FF_B_TYPE)
896
            ftype = 'B';
897
        else if (src_frame->pict_type == FF_I_TYPE)
898
            ftype = 'I';
899
        else
900
            ftype = 'P';
901
        printf("frame_type=%c clock=%0.3f pts=%0.3f\n", 
902
               ftype, pts, pts1);
903
    }
904
#endif
905
    return queue_picture(is, src_frame, pts);
906
}
907

    
908
static int video_thread(void *arg)
909
{
910
    VideoState *is = arg;
911
    AVPacket pkt1, *pkt = &pkt1;
912
    int len1, got_picture;
913
    AVFrame *frame= avcodec_alloc_frame();
914
    double pts;
915

    
916
    for(;;) {
917
        while (is->paused && !is->videoq.abort_request) {
918
            SDL_Delay(10);
919
        }
920
        if (packet_queue_get(&is->videoq, pkt, 1) < 0)
921
            break;
922
        /* NOTE: ipts is the PTS of the _first_ picture beginning in
923
           this packet, if any */
924
        pts = 0;
925
        if (pkt->dts != AV_NOPTS_VALUE)
926
            pts = av_q2d(is->video_st->time_base)*pkt->dts;
927

    
928
            SDL_LockMutex(is->video_decoder_mutex);
929
            len1 = avcodec_decode_video(&is->video_st->codec, 
930
                                        frame, &got_picture, 
931
                                        pkt->data, pkt->size);
932
            SDL_UnlockMutex(is->video_decoder_mutex);
933
//            if (len1 < 0)
934
//                break;
935
            if (got_picture) {
936
                if (output_picture2(is, frame, pts) < 0)
937
                    goto the_end;
938
            }
939
        av_free_packet(pkt);
940
        if (step) 
941
            if (cur_stream)
942
                stream_pause(cur_stream);
943
    }
944
 the_end:
945
    av_free(frame);
946
    return 0;
947
}
948

    
949
/* copy samples for viewing in editor window */
950
static void update_sample_display(VideoState *is, short *samples, int samples_size)
951
{
952
    int size, len, channels;
953

    
954
    channels = is->audio_st->codec.channels;
955

    
956
    size = samples_size / sizeof(short);
957
    while (size > 0) {
958
        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
959
        if (len > size)
960
            len = size;
961
        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
962
        samples += len;
963
        is->sample_array_index += len;
964
        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
965
            is->sample_array_index = 0;
966
        size -= len;
967
    }
968
}
969

    
970
/* return the new audio buffer size (samples can be added or deleted
971
   to get better sync if video or external master clock) */
972
static int synchronize_audio(VideoState *is, short *samples, 
973
                             int samples_size1, double pts)
974
{
975
    int n, samples_size;
976
    double ref_clock;
977
    
978
    n = 2 * is->audio_st->codec.channels;
979
    samples_size = samples_size1;
980

    
981
    /* if not master, then we try to remove or add samples to correct the clock */
982
    if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
983
         is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
984
        double diff, avg_diff;
985
        int wanted_size, min_size, max_size, nb_samples;
986
            
987
        ref_clock = get_master_clock(is);
988
        diff = get_audio_clock(is) - ref_clock;
989
        
990
        if (diff < AV_NOSYNC_THRESHOLD) {
991
            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
992
            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
993
                /* not enough measures to have a correct estimate */
994
                is->audio_diff_avg_count++;
995
            } else {
996
                /* estimate the A-V difference */
997
                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
998

    
999
                if (fabs(avg_diff) >= is->audio_diff_threshold) {
1000
                    wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
1001
                    nb_samples = samples_size / n;
1002
                
1003
                    min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1004
                    max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1005
                    if (wanted_size < min_size)
1006
                        wanted_size = min_size;
1007
                    else if (wanted_size > max_size)
1008
                        wanted_size = max_size;
1009
                    
1010
                    /* add or remove samples to correction the synchro */
1011
                    if (wanted_size < samples_size) {
1012
                        /* remove samples */
1013
                        samples_size = wanted_size;
1014
                    } else if (wanted_size > samples_size) {
1015
                        uint8_t *samples_end, *q;
1016
                        int nb;
1017
                        
1018
                        /* add samples */
1019
                        nb = (samples_size - wanted_size);
1020
                        samples_end = (uint8_t *)samples + samples_size - n;
1021
                        q = samples_end + n;
1022
                        while (nb > 0) {
1023
                            memcpy(q, samples_end, n);
1024
                            q += n;
1025
                            nb -= n;
1026
                        }
1027
                        samples_size = wanted_size;
1028
                    }
1029
                }
1030
#if 0
1031
                printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n", 
1032
                       diff, avg_diff, samples_size - samples_size1, 
1033
                       is->audio_clock, is->video_clock, is->audio_diff_threshold);
1034
#endif
1035
            }
1036
        } else {
1037
            /* too big difference : may be initial PTS errors, so
1038
               reset A-V filter */
1039
            is->audio_diff_avg_count = 0;
1040
            is->audio_diff_cum = 0;
1041
        }
1042
    }
1043

    
1044
    return samples_size;
1045
}
1046

    
1047
/* decode one audio frame and returns its uncompressed size */
1048
static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1049
{
1050
    AVPacket *pkt = &is->audio_pkt;
1051
    int n, len1, data_size;
1052
    double pts;
1053

    
1054
    for(;;) {
1055
        /* NOTE: the audio packet can contain several frames */
1056
        while (is->audio_pkt_size > 0) {
1057
            SDL_LockMutex(is->audio_decoder_mutex);
1058
            len1 = avcodec_decode_audio(&is->audio_st->codec, 
1059
                                        (int16_t *)audio_buf, &data_size, 
1060
                                        is->audio_pkt_data, is->audio_pkt_size);
1061
            SDL_UnlockMutex(is->audio_decoder_mutex);
1062
            if (len1 < 0) {
1063
                /* if error, we skip the frame */
1064
                is->audio_pkt_size = 0;
1065
                break;
1066
            }
1067
            
1068
            is->audio_pkt_data += len1;
1069
            is->audio_pkt_size -= len1;
1070
            if (data_size <= 0)
1071
                continue;
1072
            /* if no pts, then compute it */
1073
            pts = is->audio_clock;
1074
            *pts_ptr = pts;
1075
            n = 2 * is->audio_st->codec.channels;
1076
            is->audio_clock += (double)data_size / 
1077
                (double)(n * is->audio_st->codec.sample_rate);
1078
#if defined(DEBUG_SYNC)
1079
            {
1080
                static double last_clock;
1081
                printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1082
                       is->audio_clock - last_clock,
1083
                       is->audio_clock, pts);
1084
                last_clock = is->audio_clock;
1085
            }
1086
#endif
1087
            return data_size;
1088
        }
1089

    
1090
        /* free the current packet */
1091
        if (pkt->data)
1092
            av_free_packet(pkt);
1093
        
1094
        if (is->paused || is->audioq.abort_request) {
1095
            return -1;
1096
        }
1097
        
1098
        /* read next packet */
1099
        if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1100
            return -1;
1101
        is->audio_pkt_data = pkt->data;
1102
        is->audio_pkt_size = pkt->size;
1103
        
1104
        /* if update the audio clock with the pts */
1105
        if (pkt->pts != AV_NOPTS_VALUE) {
1106
            is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1107
        }
1108
    }
1109
}
1110

    
1111
/* get the current audio output buffer size, in samples. With SDL, we
1112
   cannot have a precise information */
1113
static int audio_write_get_buf_size(VideoState *is)
1114
{
1115
    return is->audio_hw_buf_size - is->audio_buf_index;
1116
}
1117

    
1118

    
1119
/* prepare a new audio buffer */
1120
void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1121
{
1122
    VideoState *is = opaque;
1123
    int audio_size, len1;
1124
    double pts;
1125

    
1126
    audio_callback_time = av_gettime();
1127
    
1128
    while (len > 0) {
1129
        if (is->audio_buf_index >= is->audio_buf_size) {
1130
           audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1131
           if (audio_size < 0) {
1132
                /* if error, just output silence */
1133
               is->audio_buf_size = 1024;
1134
               memset(is->audio_buf, 0, is->audio_buf_size);
1135
           } else {
1136
               if (is->show_audio)
1137
                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1138
               audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size, 
1139
                                              pts);
1140
               is->audio_buf_size = audio_size;
1141
           }
1142
           is->audio_buf_index = 0;
1143
        }
1144
        len1 = is->audio_buf_size - is->audio_buf_index;
1145
        if (len1 > len)
1146
            len1 = len;
1147
        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1148
        len -= len1;
1149
        stream += len1;
1150
        is->audio_buf_index += len1;
1151
    }
1152
}
1153

    
1154

    
1155
/* open a given stream. Return 0 if OK */
1156
static int stream_component_open(VideoState *is, int stream_index)
1157
{
1158
    AVFormatContext *ic = is->ic;
1159
    AVCodecContext *enc;
1160
    AVCodec *codec;
1161
    SDL_AudioSpec wanted_spec, spec;
1162

    
1163
    if (stream_index < 0 || stream_index >= ic->nb_streams)
1164
        return -1;
1165
    enc = &ic->streams[stream_index]->codec;
1166
    
1167
    /* prepare audio output */
1168
    if (enc->codec_type == CODEC_TYPE_AUDIO) {
1169
        wanted_spec.freq = enc->sample_rate;
1170
        wanted_spec.format = AUDIO_S16SYS;
1171
        /* hack for AC3. XXX: suppress that */
1172
        if (enc->channels > 2)
1173
            enc->channels = 2;
1174
        wanted_spec.channels = enc->channels;
1175
        wanted_spec.silence = 0;
1176
        wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1177
        wanted_spec.callback = sdl_audio_callback;
1178
        wanted_spec.userdata = is;
1179
        if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1180
            fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1181
            return -1;
1182
        }
1183
        is->audio_hw_buf_size = spec.size;
1184
    }
1185

    
1186
    codec = avcodec_find_decoder(enc->codec_id);
1187
    enc->debug_mv = debug_mv;
1188
    enc->debug = debug;
1189
    if(debug)
1190
        av_log_set_level(AV_LOG_DEBUG);
1191
    enc->workaround_bugs = workaround_bugs;
1192
    enc->lowres = lowres;
1193
    if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1194
    enc->idct_algo= idct;
1195
    if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1196
    enc->skip_frame= skip_frame;
1197
    enc->skip_idct= skip_idct;
1198
    enc->skip_loop_filter= skip_loop_filter;
1199
    if (!codec ||
1200
        avcodec_open(enc, codec) < 0)
1201
        return -1;
1202
#if defined(HAVE_THREADS)
1203
    if(thread_count>1)
1204
        avcodec_thread_init(enc, thread_count);
1205
#endif
1206
    enc->thread_count= thread_count;
1207
    switch(enc->codec_type) {
1208
    case CODEC_TYPE_AUDIO:
1209
        is->audio_stream = stream_index;
1210
        is->audio_st = ic->streams[stream_index];
1211
        is->audio_buf_size = 0;
1212
        is->audio_buf_index = 0;
1213

    
1214
        /* init averaging filter */
1215
        is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1216
        is->audio_diff_avg_count = 0;
1217
        /* since we do not have a precise anough audio fifo fullness,
1218
           we correct audio sync only if larger than this threshold */
1219
        is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1220

    
1221
        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1222
        packet_queue_init(&is->audioq);
1223
        SDL_PauseAudio(0);
1224
        break;
1225
    case CODEC_TYPE_VIDEO:
1226
        is->video_stream = stream_index;
1227
        is->video_st = ic->streams[stream_index];
1228

    
1229
        is->frame_last_delay = 40e-3;
1230
        is->frame_timer = (double)av_gettime() / 1000000.0;
1231
        is->video_current_pts_time = av_gettime();
1232

    
1233
        packet_queue_init(&is->videoq);
1234
        is->video_tid = SDL_CreateThread(video_thread, is);
1235
        break;
1236
    default:
1237
        break;
1238
    }
1239
    return 0;
1240
}
1241

    
1242
static void stream_component_close(VideoState *is, int stream_index)
1243
{
1244
    AVFormatContext *ic = is->ic;
1245
    AVCodecContext *enc;
1246
    
1247
    enc = &ic->streams[stream_index]->codec;
1248

    
1249
    switch(enc->codec_type) {
1250
    case CODEC_TYPE_AUDIO:
1251
        packet_queue_abort(&is->audioq);
1252

    
1253
        SDL_CloseAudio();
1254

    
1255
        packet_queue_end(&is->audioq);
1256
        break;
1257
    case CODEC_TYPE_VIDEO:
1258
        packet_queue_abort(&is->videoq);
1259

    
1260
        /* note: we also signal this mutex to make sure we deblock the
1261
           video thread in all cases */
1262
        SDL_LockMutex(is->pictq_mutex);
1263
        SDL_CondSignal(is->pictq_cond);
1264
        SDL_UnlockMutex(is->pictq_mutex);
1265

    
1266
        SDL_WaitThread(is->video_tid, NULL);
1267

    
1268
        packet_queue_end(&is->videoq);
1269
        break;
1270
    default:
1271
        break;
1272
    }
1273

    
1274
    avcodec_close(enc);
1275
    switch(enc->codec_type) {
1276
    case CODEC_TYPE_AUDIO:
1277
        is->audio_st = NULL;
1278
        is->audio_stream = -1;
1279
        break;
1280
    case CODEC_TYPE_VIDEO:
1281
        is->video_st = NULL;
1282
        is->video_stream = -1;
1283
        break;
1284
    default:
1285
        break;
1286
    }
1287
}
1288

    
1289
void dump_stream_info(AVFormatContext *s)
1290
{
1291
    if (s->track != 0)
1292
        fprintf(stderr, "Track: %d\n", s->track);
1293
    if (s->title[0] != '\0')
1294
        fprintf(stderr, "Title: %s\n", s->title);
1295
    if (s->author[0] != '\0')
1296
        fprintf(stderr, "Author: %s\n", s->author);
1297
    if (s->album[0] != '\0')
1298
        fprintf(stderr, "Album: %s\n", s->album);
1299
    if (s->year != 0)
1300
        fprintf(stderr, "Year: %d\n", s->year);
1301
    if (s->genre[0] != '\0')
1302
        fprintf(stderr, "Genre: %s\n", s->genre);
1303
}
1304

    
1305
/* since we have only one decoding thread, we can use a global
1306
   variable instead of a thread local variable */
1307
static VideoState *global_video_state;
1308

    
1309
static int decode_interrupt_cb(void)
1310
{
1311
    return (global_video_state && global_video_state->abort_request);
1312
}
1313

    
1314
/* this thread gets the stream from the disk or the network */
1315
static int decode_thread(void *arg)
1316
{
1317
    VideoState *is = arg;
1318
    AVFormatContext *ic;
1319
    int err, i, ret, video_index, audio_index, use_play;
1320
    AVPacket pkt1, *pkt = &pkt1;
1321
    AVFormatParameters params, *ap = &params;
1322

    
1323
    video_index = -1;
1324
    audio_index = -1;
1325
    is->video_stream = -1;
1326
    is->audio_stream = -1;
1327

    
1328
    global_video_state = is;
1329
    url_set_interrupt_cb(decode_interrupt_cb);
1330

    
1331
    memset(ap, 0, sizeof(*ap));
1332
    ap->image_format = image_format;
1333
    ap->initial_pause = 1; /* we force a pause when starting an RTSP
1334
                              stream */
1335
    
1336
    err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1337
    if (err < 0) {
1338
        print_error(is->filename, err);
1339
        ret = -1;
1340
        goto fail;
1341
    }
1342
    is->ic = ic;
1343
#ifdef CONFIG_NETWORK
1344
    use_play = (ic->iformat == &rtsp_demux);
1345
#else
1346
    use_play = 0;
1347
#endif
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
        ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe shouldnt use url_feof() to test for the end
1356
    }
1357

    
1358
    /* if seeking requested, we execute it */
1359
    if (start_time != AV_NOPTS_VALUE) {
1360
        int64_t timestamp;
1361

    
1362
        timestamp = start_time;
1363
        /* add the stream start time */
1364
        if (ic->start_time != AV_NOPTS_VALUE)
1365
            timestamp += ic->start_time;
1366
        ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1367
        if (ret < 0) {
1368
            fprintf(stderr, "%s: could not seek to position %0.3f\n", 
1369
                    is->filename, (double)timestamp / AV_TIME_BASE);
1370
        }
1371
    }
1372

    
1373
    /* now we can begin to play (RTSP stream only) */
1374
    av_read_play(ic);
1375

    
1376
    if (use_play) {
1377
        err = av_find_stream_info(ic);
1378
        if (err < 0) {
1379
            fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1380
            ret = -1;
1381
            goto fail;
1382
        }
1383
    }
1384

    
1385
    for(i = 0; i < ic->nb_streams; i++) {
1386
        AVCodecContext *enc = &ic->streams[i]->codec;
1387
        switch(enc->codec_type) {
1388
        case CODEC_TYPE_AUDIO:
1389
            if (audio_index < 0 && !audio_disable)
1390
                audio_index = i;
1391
            break;
1392
        case CODEC_TYPE_VIDEO:
1393
            if (video_index < 0 && !video_disable)
1394
                video_index = i;
1395
            break;
1396
        default:
1397
            break;
1398
        }
1399
    }
1400
    if (show_status) {
1401
        dump_format(ic, 0, is->filename, 0);
1402
        dump_stream_info(ic);
1403
    }
1404

    
1405
    /* open the streams */
1406
    if (audio_index >= 0) {
1407
        stream_component_open(is, audio_index);
1408
    }
1409

    
1410
    if (video_index >= 0) {
1411
        stream_component_open(is, video_index);
1412
    } else {
1413
        if (!display_disable)
1414
            is->show_audio = 1;
1415
    }
1416

    
1417
    if (is->video_stream < 0 && is->audio_stream < 0) {
1418
        fprintf(stderr, "%s: could not open codecs\n", is->filename);
1419
        ret = -1;
1420
        goto fail;
1421
    }
1422

    
1423
    for(;;) {
1424
        if (is->abort_request)
1425
            break;
1426
#ifdef CONFIG_NETWORK
1427
        if (is->paused != is->last_paused) {
1428
            is->last_paused = is->paused;
1429
            if (is->paused)
1430
                av_read_pause(ic);
1431
            else
1432
                av_read_play(ic);
1433
        }
1434
        if (is->paused && ic->iformat == &rtsp_demux) {
1435
            /* wait 10 ms to avoid trying to get another packet */
1436
            /* XXX: horrible */
1437
            SDL_Delay(10);
1438
            continue;
1439
        }
1440
#endif
1441
        if (is->seek_req) {
1442
            /* XXX: must lock decoder threads */
1443
            SDL_LockMutex(is->video_decoder_mutex);
1444
            SDL_LockMutex(is->audio_decoder_mutex);
1445
            ret = av_seek_frame(is->ic, -1, is->seek_pos, is->seek_flags);
1446
            if (ret < 0) {
1447
                fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1448
            }else{
1449
                if (is->audio_stream >= 0) {
1450
                    packet_queue_flush(&is->audioq);
1451
                }
1452
                if (is->video_stream >= 0) {
1453
                    packet_queue_flush(&is->videoq);
1454
                    avcodec_flush_buffers(&ic->streams[video_index]->codec);
1455
                }
1456
            }
1457
            SDL_UnlockMutex(is->audio_decoder_mutex);
1458
            SDL_UnlockMutex(is->video_decoder_mutex);
1459
            is->seek_req = 0;
1460
        }
1461

    
1462
        /* if the queue are full, no need to read more */
1463
        if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1464
            is->videoq.size > MAX_VIDEOQ_SIZE || 
1465
            url_feof(&ic->pb)) {
1466
            /* wait 10 ms */
1467
            SDL_Delay(10);
1468
            continue;
1469
        }
1470
        ret = av_read_frame(ic, pkt);
1471
        if (ret < 0) {
1472
            if (url_ferror(&ic->pb) == 0) {
1473
                SDL_Delay(100); /* wait for user event */
1474
                continue;
1475
            } else
1476
                break;
1477
        }
1478
        if (pkt->stream_index == is->audio_stream) {
1479
            packet_queue_put(&is->audioq, pkt);
1480
        } else if (pkt->stream_index == is->video_stream) {
1481
            packet_queue_put(&is->videoq, pkt);
1482
        } else {
1483
            av_free_packet(pkt);
1484
        }
1485
    }
1486
    /* wait until the end */
1487
    while (!is->abort_request) {
1488
        SDL_Delay(100);
1489
    }
1490

    
1491
    ret = 0;
1492
 fail:
1493
    /* disable interrupting */
1494
    global_video_state = NULL;
1495

    
1496
    /* close each stream */
1497
    if (is->audio_stream >= 0)
1498
        stream_component_close(is, is->audio_stream);
1499
    if (is->video_stream >= 0)
1500
        stream_component_close(is, is->video_stream);
1501
    if (is->ic) {
1502
        av_close_input_file(is->ic);
1503
        is->ic = NULL; /* safety */
1504
    }
1505
    url_set_interrupt_cb(NULL);
1506

    
1507
    if (ret != 0) {
1508
        SDL_Event event;
1509
        
1510
        event.type = FF_QUIT_EVENT;
1511
        event.user.data1 = is;
1512
        SDL_PushEvent(&event);
1513
    }
1514
    return 0;
1515
}
1516

    
1517
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1518
{
1519
    VideoState *is;
1520

    
1521
    is = av_mallocz(sizeof(VideoState));
1522
    if (!is)
1523
        return NULL;
1524
    pstrcpy(is->filename, sizeof(is->filename), filename);
1525
    is->iformat = iformat;
1526
    if (screen) {
1527
        is->width = screen->w;
1528
        is->height = screen->h;
1529
    }
1530
    is->ytop = 0;
1531
    is->xleft = 0;
1532

    
1533
    /* start video display */
1534
    is->pictq_mutex = SDL_CreateMutex();
1535
    is->pictq_cond = SDL_CreateCond();
1536
    
1537
    is->audio_decoder_mutex = SDL_CreateMutex();
1538
    is->video_decoder_mutex = SDL_CreateMutex();
1539

    
1540
    /* add the refresh timer to draw the picture */
1541
    schedule_refresh(is, 40);
1542

    
1543
    is->av_sync_type = av_sync_type;
1544
    is->parse_tid = SDL_CreateThread(decode_thread, is);
1545
    if (!is->parse_tid) {
1546
        av_free(is);
1547
        return NULL;
1548
    }
1549
    return is;
1550
}
1551

    
1552
static void stream_close(VideoState *is)
1553
{
1554
    VideoPicture *vp;
1555
    int i;
1556
    /* XXX: use a special url_shutdown call to abort parse cleanly */
1557
    is->abort_request = 1;
1558
    SDL_WaitThread(is->parse_tid, NULL);
1559

    
1560
    /* free all pictures */
1561
    for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1562
        vp = &is->pictq[i];
1563
        if (vp->bmp) {
1564
            SDL_FreeYUVOverlay(vp->bmp);
1565
            vp->bmp = NULL;
1566
        }
1567
    }
1568
    SDL_DestroyMutex(is->pictq_mutex);
1569
    SDL_DestroyCond(is->pictq_cond);
1570
    SDL_DestroyMutex(is->audio_decoder_mutex);
1571
    SDL_DestroyMutex(is->video_decoder_mutex);
1572
}
1573

    
1574
void stream_cycle_channel(VideoState *is, int codec_type)
1575
{
1576
    AVFormatContext *ic = is->ic;
1577
    int start_index, stream_index;
1578
    AVStream *st;
1579

    
1580
    if (codec_type == CODEC_TYPE_VIDEO)
1581
        start_index = is->video_stream;
1582
    else
1583
        start_index = is->audio_stream;
1584
    if (start_index < 0)
1585
        return;
1586
    stream_index = start_index;
1587
    for(;;) {
1588
        if (++stream_index >= is->ic->nb_streams)
1589
            stream_index = 0;
1590
        if (stream_index == start_index)
1591
            return;
1592
        st = ic->streams[stream_index];
1593
        if (st->codec.codec_type == codec_type) {
1594
            /* check that parameters are OK */
1595
            switch(codec_type) {
1596
            case CODEC_TYPE_AUDIO:
1597
                if (st->codec.sample_rate != 0 &&
1598
                    st->codec.channels != 0)
1599
                    goto the_end;
1600
                break;
1601
            case CODEC_TYPE_VIDEO:
1602
                goto the_end;
1603
            default:
1604
                break;
1605
            }
1606
        }
1607
    }
1608
 the_end:
1609
    stream_component_close(is, start_index);
1610
    stream_component_open(is, stream_index);
1611
}
1612

    
1613

    
1614
void toggle_full_screen(void)
1615
{
1616
    int w, h, flags;
1617
    is_full_screen = !is_full_screen;
1618
    if (!fs_screen_width) {
1619
        /* use default SDL method */
1620
        SDL_WM_ToggleFullScreen(screen);
1621
    } else {
1622
        /* use the recorded resolution */
1623
        flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1624
        if (is_full_screen) {
1625
            w = fs_screen_width;
1626
            h = fs_screen_height;
1627
            flags |= SDL_FULLSCREEN;
1628
        } else {
1629
            w = screen_width;
1630
            h = screen_height;
1631
            flags |= SDL_RESIZABLE;
1632
        }
1633
        screen = SDL_SetVideoMode(w, h, 0, flags);
1634
        cur_stream->width = w;
1635
        cur_stream->height = h;
1636
    }
1637
}
1638

    
1639
void toggle_pause(void)
1640
{
1641
    if (cur_stream)
1642
        stream_pause(cur_stream);
1643
    step = 0;
1644
}
1645

    
1646
void step_to_next_frame(void)
1647
{
1648
    if (cur_stream) {
1649
        if (cur_stream->paused)
1650
            cur_stream->paused=0;
1651
        cur_stream->video_current_pts = get_video_clock(cur_stream);
1652
    }
1653
    step = 1;
1654
}
1655

    
1656
void do_exit(void)
1657
{
1658
    if (cur_stream) {
1659
        stream_close(cur_stream);
1660
        cur_stream = NULL;
1661
    }
1662
    if (show_status)
1663
        printf("\n");
1664
    SDL_Quit();
1665
    exit(0);
1666
}
1667

    
1668
void toggle_audio_display(void)
1669
{
1670
    if (cur_stream) {
1671
        cur_stream->show_audio = !cur_stream->show_audio;
1672
    }
1673
}
1674

    
1675
/* handle an event sent by the GUI */
1676
void event_loop(void)
1677
{
1678
    SDL_Event event;
1679
    double incr, pos, frac;
1680

    
1681
    for(;;) {
1682
        SDL_WaitEvent(&event);
1683
        switch(event.type) {
1684
        case SDL_KEYDOWN:
1685
            switch(event.key.keysym.sym) {
1686
            case SDLK_ESCAPE:
1687
            case SDLK_q:
1688
                do_exit();
1689
                break;
1690
            case SDLK_f:
1691
                toggle_full_screen();
1692
                break;
1693
            case SDLK_p:
1694
            case SDLK_SPACE:
1695
                toggle_pause();
1696
                break;
1697
            case SDLK_s: //S: Step to next frame
1698
                step_to_next_frame();
1699
                break;
1700
            case SDLK_a:
1701
                if (cur_stream) 
1702
                    stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1703
                break;
1704
            case SDLK_v:
1705
                if (cur_stream) 
1706
                    stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1707
                break;
1708
            case SDLK_w:
1709
                toggle_audio_display();
1710
                break;
1711
            case SDLK_LEFT:
1712
                incr = -10.0;
1713
                goto do_seek;
1714
            case SDLK_RIGHT:
1715
                incr = 10.0;
1716
                goto do_seek;
1717
            case SDLK_UP:
1718
                incr = 60.0;
1719
                goto do_seek;
1720
            case SDLK_DOWN:
1721
                incr = -60.0;
1722
            do_seek:
1723
                if (cur_stream) {
1724
                    pos = get_master_clock(cur_stream);
1725
                    pos += incr;
1726
                    stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
1727
                }
1728
                break;
1729
            default:
1730
                break;
1731
            }
1732
            break;
1733
        case SDL_MOUSEBUTTONDOWN:
1734
            if (cur_stream) {
1735
                int ns, hh, mm, ss;
1736
                int tns, thh, tmm, tss;
1737
                tns = cur_stream->ic->duration/1000000LL;
1738
                thh = tns/3600;
1739
                tmm = (tns%3600)/60;
1740
                tss = (tns%60);
1741
                frac = (double)event.button.x/(double)cur_stream->width;
1742
                ns = frac*tns;
1743
                hh = ns/3600;
1744
                mm = (ns%3600)/60;
1745
                ss = (ns%60);
1746
                fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
1747
                        hh, mm, ss, thh, tmm, tss);
1748
                stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
1749
            }
1750
            break;
1751
        case SDL_VIDEORESIZE:
1752
            if (cur_stream) {
1753
                screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0, 
1754
                                          SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1755
                cur_stream->width = event.resize.w;
1756
                cur_stream->height = event.resize.h;
1757
            }
1758
            break;
1759
        case SDL_QUIT:
1760
        case FF_QUIT_EVENT:
1761
            do_exit();
1762
            break;
1763
        case FF_ALLOC_EVENT:
1764
            alloc_picture(event.user.data1);
1765
            break;
1766
        case FF_REFRESH_EVENT:
1767
            video_refresh_timer(event.user.data1);
1768
            break;
1769
        default:
1770
            break;
1771
        }
1772
    }
1773
}
1774

    
1775
void opt_width(const char *arg)
1776
{
1777
    screen_width = atoi(arg);
1778
}
1779

    
1780
void opt_height(const char *arg)
1781
{
1782
    screen_height = atoi(arg);
1783
}
1784

    
1785
static void opt_format(const char *arg)
1786
{
1787
    file_iformat = av_find_input_format(arg);
1788
    if (!file_iformat) {
1789
        fprintf(stderr, "Unknown input format: %s\n", arg);
1790
        exit(1);
1791
    }
1792
}
1793

    
1794
static void opt_image_format(const char *arg)
1795
{
1796
    AVImageFormat *f;
1797
    
1798
    for(f = first_image_format; f != NULL; f = f->next) {
1799
        if (!strcmp(arg, f->name))
1800
            break;
1801
    }
1802
    if (!f) {
1803
        fprintf(stderr, "Unknown image format: '%s'\n", arg);
1804
        exit(1);
1805
    }
1806
    image_format = f;
1807
}
1808

    
1809
#ifdef CONFIG_NETWORK
1810
void opt_rtp_tcp(void)
1811
{
1812
    /* only tcp protocol */
1813
    rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1814
}
1815
#endif
1816

    
1817
void opt_sync(const char *arg)
1818
{
1819
    if (!strcmp(arg, "audio"))
1820
        av_sync_type = AV_SYNC_AUDIO_MASTER;
1821
    else if (!strcmp(arg, "video"))
1822
        av_sync_type = AV_SYNC_VIDEO_MASTER;
1823
    else if (!strcmp(arg, "ext"))
1824
        av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1825
    else
1826
        show_help();
1827
}
1828

    
1829
void opt_seek(const char *arg)
1830
{
1831
    start_time = parse_date(arg, 1);
1832
}
1833

    
1834
static void opt_debug(const char *arg)
1835
{
1836
    debug = atoi(arg);
1837
}
1838
    
1839
static void opt_vismv(const char *arg)
1840
{
1841
    debug_mv = atoi(arg);
1842
}
1843

    
1844
static void opt_thread_count(const char *arg)
1845
{
1846
    thread_count= atoi(arg);
1847
#if !defined(HAVE_THREADS)
1848
    fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1849
#endif
1850
}
1851
    
1852
const OptionDef options[] = {
1853
    { "h", 0, {(void*)show_help}, "show help" },    
1854
    { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1855
    { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1856
#if 0
1857
    /* disabled as SDL/X11 does not support it correctly on application launch */
1858
    { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1859
#endif
1860
    { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1861
    { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1862
    { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1863
    { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1864
    { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1865
    { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1866
    { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1867
    { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1868
    { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
1869
    { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1870
    { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
1871
    { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
1872
    { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
1873
    { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
1874
    { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
1875
    { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
1876
#ifdef CONFIG_NETWORK
1877
    { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1878
#endif
1879
    { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1880
    { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1881
    { NULL, },
1882
};
1883

    
1884
void show_help(void)
1885
{
1886
    printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1887
           "usage: ffplay [options] input_file\n"
1888
           "Simple media player\n");
1889
    printf("\n");
1890
    show_help_options(options, "Main options:\n",
1891
                      OPT_EXPERT, 0);
1892
    show_help_options(options, "\nAdvanced options:\n",
1893
                      OPT_EXPERT, OPT_EXPERT);
1894
    printf("\nWhile playing:\n"
1895
           "q, ESC              quit\n"
1896
           "f                   toggle full screen\n"
1897
           "p, SPC              pause\n"
1898
           "a                   cycle audio channel\n"
1899
           "v                   cycle video channel\n"
1900
           "w                   show audio waves\n"
1901
           "left/right          seek backward/forward 10 seconds\n"
1902
           "down/up             seek backward/forward 1 minute\n"
1903
           "mouse click         seek to percentage in file corresponding to fraction of width\n"
1904
           );
1905
    exit(1);
1906
}
1907

    
1908
void parse_arg_file(const char *filename)
1909
{
1910
    if (!strcmp(filename, "-"))
1911
                    filename = "pipe:";
1912
    input_filename = filename;
1913
}
1914

    
1915
/* Called from the main */
1916
int main(int argc, char **argv)
1917
{
1918
    int flags, w, h;
1919
    
1920
    /* register all codecs, demux and protocols */
1921
    av_register_all();
1922

    
1923
    #ifdef CONFIG_OS2
1924
      MorphToPM(); // Morph the VIO application to a PM one to be able to use Win* functions
1925
 
1926
      // Make stdout and stderr unbuffered
1927
      setbuf( stdout, NULL );
1928
      setbuf( stderr, NULL );
1929
    #endif
1930

    
1931
    parse_options(argc, argv, options);
1932

    
1933
    if (!input_filename)
1934
        show_help();
1935

    
1936
    if (display_disable) {
1937
        video_disable = 1;
1938
    }
1939
    flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1940
#ifndef CONFIG_WIN32
1941
    flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1942
#endif
1943
    if (SDL_Init (flags)) {
1944
        fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1945
        exit(1);
1946
    }
1947

    
1948
    if (!display_disable) {
1949
#ifdef HAVE_X11
1950
        /* save the screen resolution... SDL should allow full screen
1951
           by resizing the window */
1952
        {
1953
            Display *dpy;
1954
            dpy = XOpenDisplay(NULL);
1955
            if (dpy) {
1956
                fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1957
                fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1958
                XCloseDisplay(dpy);
1959
            }
1960
        }
1961
#endif
1962
        flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1963
        if (is_full_screen && fs_screen_width) {
1964
            w = fs_screen_width;
1965
            h = fs_screen_height;
1966
            flags |= SDL_FULLSCREEN;
1967
        } else {
1968
            w = screen_width;
1969
            h = screen_height;
1970
            flags |= SDL_RESIZABLE;
1971
        }
1972
        screen = SDL_SetVideoMode(w, h, 0, flags);
1973
        if (!screen) {
1974
            fprintf(stderr, "SDL: could not set video mode - exiting\n");
1975
            exit(1);
1976
        }
1977
        SDL_WM_SetCaption("FFplay", "FFplay");
1978
    }
1979

    
1980
    SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1981
    SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1982
    SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1983
    SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1984

    
1985
    cur_stream = stream_open(input_filename, file_iformat);
1986

    
1987
    event_loop();
1988

    
1989
    /* never returns */
1990

    
1991
    return 0;
1992
}