Add a missing dependency for the WebM muxer
[ffmpeg.git] / ffplay.c
1 /*
2  * FFplay : Simple Media Player based on the FFmpeg libraries
3  * Copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #define _XOPEN_SOURCE 600
23
24 #include "config.h"
25 #include <inttypes.h>
26 #include <math.h>
27 #include <limits.h>
28 #include "libavutil/avstring.h"
29 #include "libavutil/colorspace.h"
30 #include "libavutil/pixdesc.h"
31 #include "libavcore/imgutils.h"
32 #include "libavcore/parseutils.h"
33 #include "libavcore/samplefmt.h"
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/audioconvert.h"
38 #include "libavcodec/opt.h"
39 #include "libavcodec/avfft.h"
40
41 #if CONFIG_AVFILTER
42 # include "libavfilter/avfilter.h"
43 # include "libavfilter/avfiltergraph.h"
44 #endif
45
46 #include "cmdutils.h"
47
48 #include <SDL.h>
49 #include <SDL_thread.h>
50
51 #ifdef __MINGW32__
52 #undef main /* We don't want SDL to override our main() */
53 #endif
54
55 #include <unistd.h>
56 #include <assert.h>
57
58 const char program_name[] = "FFplay";
59 const int program_birth_year = 2003;
60
61 //#define DEBUG_SYNC
62
63 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
64 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
65 #define MIN_FRAMES 5
66
67 /* SDL audio buffer size, in samples. Should be small to have precise
68    A/V sync as SDL does not have hardware buffer fullness info. */
69 #define SDL_AUDIO_BUFFER_SIZE 1024
70
71 /* no AV sync correction is done if below the AV sync threshold */
72 #define AV_SYNC_THRESHOLD 0.01
73 /* no AV correction is done if too big error */
74 #define AV_NOSYNC_THRESHOLD 10.0
75
76 #define FRAME_SKIP_FACTOR 0.05
77
78 /* maximum audio speed change to get correct sync */
79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
80
81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
82 #define AUDIO_DIFF_AVG_NB   20
83
84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
85 #define SAMPLE_ARRAY_SIZE (2*65536)
86
87 static int sws_flags = SWS_BICUBIC;
88
89 typedef struct PacketQueue {
90     AVPacketList *first_pkt, *last_pkt;
91     int nb_packets;
92     int size;
93     int abort_request;
94     SDL_mutex *mutex;
95     SDL_cond *cond;
96 } PacketQueue;
97
98 #define VIDEO_PICTURE_QUEUE_SIZE 2
99 #define SUBPICTURE_QUEUE_SIZE 4
100
101 typedef struct VideoPicture {
102     double pts;                                  ///<presentation time stamp for this picture
103     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
104     int64_t pos;                                 ///<byte position in file
105     SDL_Overlay *bmp;
106     int width, height; /* source height & width */
107     int allocated;
108     enum PixelFormat pix_fmt;
109
110 #if CONFIG_AVFILTER
111     AVFilterBufferRef *picref;
112 #endif
113 } VideoPicture;
114
115 typedef struct SubPicture {
116     double pts; /* presentation time stamp for this picture */
117     AVSubtitle sub;
118 } SubPicture;
119
120 enum {
121     AV_SYNC_AUDIO_MASTER, /* default choice */
122     AV_SYNC_VIDEO_MASTER,
123     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
124 };
125
126 typedef struct VideoState {
127     SDL_Thread *parse_tid;
128     SDL_Thread *video_tid;
129     SDL_Thread *refresh_tid;
130     AVInputFormat *iformat;
131     int no_background;
132     int abort_request;
133     int paused;
134     int last_paused;
135     int seek_req;
136     int seek_flags;
137     int64_t seek_pos;
138     int64_t seek_rel;
139     int read_pause_return;
140     AVFormatContext *ic;
141     int dtg_active_format;
142
143     int audio_stream;
144
145     int av_sync_type;
146     double external_clock; /* external clock base */
147     int64_t external_clock_time;
148
149     double audio_clock;
150     double audio_diff_cum; /* used for AV difference average computation */
151     double audio_diff_avg_coef;
152     double audio_diff_threshold;
153     int audio_diff_avg_count;
154     AVStream *audio_st;
155     PacketQueue audioq;
156     int audio_hw_buf_size;
157     /* samples output by the codec. we reserve more space for avsync
158        compensation */
159     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
160     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
161     uint8_t *audio_buf;
162     unsigned int audio_buf_size; /* in bytes */
163     int audio_buf_index; /* in bytes */
164     AVPacket audio_pkt_temp;
165     AVPacket audio_pkt;
166     enum AVSampleFormat audio_src_fmt;
167     AVAudioConvert *reformat_ctx;
168
169     int show_audio; /* if true, display audio samples */
170     int16_t sample_array[SAMPLE_ARRAY_SIZE];
171     int sample_array_index;
172     int last_i_start;
173     RDFTContext *rdft;
174     int rdft_bits;
175     FFTSample *rdft_data;
176     int xpos;
177
178     SDL_Thread *subtitle_tid;
179     int subtitle_stream;
180     int subtitle_stream_changed;
181     AVStream *subtitle_st;
182     PacketQueue subtitleq;
183     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
184     int subpq_size, subpq_rindex, subpq_windex;
185     SDL_mutex *subpq_mutex;
186     SDL_cond *subpq_cond;
187
188     double frame_timer;
189     double frame_last_pts;
190     double frame_last_delay;
191     double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
192     int video_stream;
193     AVStream *video_st;
194     PacketQueue videoq;
195     double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
196     double video_current_pts_drift;              ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
197     int64_t video_current_pos;                   ///<current displayed file pos
198     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
199     int pictq_size, pictq_rindex, pictq_windex;
200     SDL_mutex *pictq_mutex;
201     SDL_cond *pictq_cond;
202 #if !CONFIG_AVFILTER
203     struct SwsContext *img_convert_ctx;
204 #endif
205
206     //    QETimer *video_timer;
207     char filename[1024];
208     int width, height, xleft, ytop;
209
210     PtsCorrectionContext pts_ctx;
211
212 #if CONFIG_AVFILTER
213     AVFilterContext *out_video_filter;          ///<the last filter in the video chain
214 #endif
215
216     float skip_frames;
217     float skip_frames_index;
218     int refresh;
219 } VideoState;
220
221 static void show_help(void);
222 static int audio_write_get_buf_size(VideoState *is);
223
224 /* options specified by the user */
225 static AVInputFormat *file_iformat;
226 static const char *input_filename;
227 static const char *window_title;
228 static int fs_screen_width;
229 static int fs_screen_height;
230 static int screen_width = 0;
231 static int screen_height = 0;
232 static int frame_width = 0;
233 static int frame_height = 0;
234 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
235 static int audio_disable;
236 static int video_disable;
237 static int wanted_stream[AVMEDIA_TYPE_NB]={
238     [AVMEDIA_TYPE_AUDIO]=-1,
239     [AVMEDIA_TYPE_VIDEO]=-1,
240     [AVMEDIA_TYPE_SUBTITLE]=-1,
241 };
242 static int seek_by_bytes=-1;
243 static int display_disable;
244 static int show_status = 1;
245 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
246 static int64_t start_time = AV_NOPTS_VALUE;
247 static int64_t duration = AV_NOPTS_VALUE;
248 static int debug = 0;
249 static int debug_mv = 0;
250 static int step = 0;
251 static int thread_count = 1;
252 static int workaround_bugs = 1;
253 static int fast = 0;
254 static int genpts = 0;
255 static int lowres = 0;
256 static int idct = FF_IDCT_AUTO;
257 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
258 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
259 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
260 static int error_recognition = FF_ER_CAREFUL;
261 static int error_concealment = 3;
262 static int decoder_reorder_pts= -1;
263 static int autoexit;
264 static int exit_on_keydown;
265 static int exit_on_mousedown;
266 static int loop=1;
267 static int framedrop=1;
268
269 static int rdftspeed=20;
270 #if CONFIG_AVFILTER
271 static char *vfilters = NULL;
272 #endif
273
274 /* current context */
275 static int is_full_screen;
276 static VideoState *cur_stream;
277 static int64_t audio_callback_time;
278
279 static AVPacket flush_pkt;
280
281 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
282 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
283 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
284
285 static SDL_Surface *screen;
286
287 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
288
289 /* packet queue handling */
290 static void packet_queue_init(PacketQueue *q)
291 {
292     memset(q, 0, sizeof(PacketQueue));
293     q->mutex = SDL_CreateMutex();
294     q->cond = SDL_CreateCond();
295     packet_queue_put(q, &flush_pkt);
296 }
297
298 static void packet_queue_flush(PacketQueue *q)
299 {
300     AVPacketList *pkt, *pkt1;
301
302     SDL_LockMutex(q->mutex);
303     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
304         pkt1 = pkt->next;
305         av_free_packet(&pkt->pkt);
306         av_freep(&pkt);
307     }
308     q->last_pkt = NULL;
309     q->first_pkt = NULL;
310     q->nb_packets = 0;
311     q->size = 0;
312     SDL_UnlockMutex(q->mutex);
313 }
314
315 static void packet_queue_end(PacketQueue *q)
316 {
317     packet_queue_flush(q);
318     SDL_DestroyMutex(q->mutex);
319     SDL_DestroyCond(q->cond);
320 }
321
322 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
323 {
324     AVPacketList *pkt1;
325
326     /* duplicate the packet */
327     if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
328         return -1;
329
330     pkt1 = av_malloc(sizeof(AVPacketList));
331     if (!pkt1)
332         return -1;
333     pkt1->pkt = *pkt;
334     pkt1->next = NULL;
335
336
337     SDL_LockMutex(q->mutex);
338
339     if (!q->last_pkt)
340
341         q->first_pkt = pkt1;
342     else
343         q->last_pkt->next = pkt1;
344     q->last_pkt = pkt1;
345     q->nb_packets++;
346     q->size += pkt1->pkt.size + sizeof(*pkt1);
347     /* XXX: should duplicate packet data in DV case */
348     SDL_CondSignal(q->cond);
349
350     SDL_UnlockMutex(q->mutex);
351     return 0;
352 }
353
354 static void packet_queue_abort(PacketQueue *q)
355 {
356     SDL_LockMutex(q->mutex);
357
358     q->abort_request = 1;
359
360     SDL_CondSignal(q->cond);
361
362     SDL_UnlockMutex(q->mutex);
363 }
364
365 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
366 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
367 {
368     AVPacketList *pkt1;
369     int ret;
370
371     SDL_LockMutex(q->mutex);
372
373     for(;;) {
374         if (q->abort_request) {
375             ret = -1;
376             break;
377         }
378
379         pkt1 = q->first_pkt;
380         if (pkt1) {
381             q->first_pkt = pkt1->next;
382             if (!q->first_pkt)
383                 q->last_pkt = NULL;
384             q->nb_packets--;
385             q->size -= pkt1->pkt.size + sizeof(*pkt1);
386             *pkt = pkt1->pkt;
387             av_free(pkt1);
388             ret = 1;
389             break;
390         } else if (!block) {
391             ret = 0;
392             break;
393         } else {
394             SDL_CondWait(q->cond, q->mutex);
395         }
396     }
397     SDL_UnlockMutex(q->mutex);
398     return ret;
399 }
400
401 static inline void fill_rectangle(SDL_Surface *screen,
402                                   int x, int y, int w, int h, int color)
403 {
404     SDL_Rect rect;
405     rect.x = x;
406     rect.y = y;
407     rect.w = w;
408     rect.h = h;
409     SDL_FillRect(screen, &rect, color);
410 }
411
412 #if 0
413 /* draw only the border of a rectangle */
414 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
415 {
416     int w1, w2, h1, h2;
417
418     /* fill the background */
419     w1 = x;
420     if (w1 < 0)
421         w1 = 0;
422     w2 = s->width - (x + w);
423     if (w2 < 0)
424         w2 = 0;
425     h1 = y;
426     if (h1 < 0)
427         h1 = 0;
428     h2 = s->height - (y + h);
429     if (h2 < 0)
430         h2 = 0;
431     fill_rectangle(screen,
432                    s->xleft, s->ytop,
433                    w1, s->height,
434                    color);
435     fill_rectangle(screen,
436                    s->xleft + s->width - w2, s->ytop,
437                    w2, s->height,
438                    color);
439     fill_rectangle(screen,
440                    s->xleft + w1, s->ytop,
441                    s->width - w1 - w2, h1,
442                    color);
443     fill_rectangle(screen,
444                    s->xleft + w1, s->ytop + s->height - h2,
445                    s->width - w1 - w2, h2,
446                    color);
447 }
448 #endif
449
450 #define ALPHA_BLEND(a, oldp, newp, s)\
451 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
452
453 #define RGBA_IN(r, g, b, a, s)\
454 {\
455     unsigned int v = ((const uint32_t *)(s))[0];\
456     a = (v >> 24) & 0xff;\
457     r = (v >> 16) & 0xff;\
458     g = (v >> 8) & 0xff;\
459     b = v & 0xff;\
460 }
461
462 #define YUVA_IN(y, u, v, a, s, pal)\
463 {\
464     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
465     a = (val >> 24) & 0xff;\
466     y = (val >> 16) & 0xff;\
467     u = (val >> 8) & 0xff;\
468     v = val & 0xff;\
469 }
470
471 #define YUVA_OUT(d, y, u, v, a)\
472 {\
473     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
474 }
475
476
477 #define BPP 1
478
479 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
480 {
481     int wrap, wrap3, width2, skip2;
482     int y, u, v, a, u1, v1, a1, w, h;
483     uint8_t *lum, *cb, *cr;
484     const uint8_t *p;
485     const uint32_t *pal;
486     int dstx, dsty, dstw, dsth;
487
488     dstw = av_clip(rect->w, 0, imgw);
489     dsth = av_clip(rect->h, 0, imgh);
490     dstx = av_clip(rect->x, 0, imgw - dstw);
491     dsty = av_clip(rect->y, 0, imgh - dsth);
492     lum = dst->data[0] + dsty * dst->linesize[0];
493     cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
494     cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
495
496     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
497     skip2 = dstx >> 1;
498     wrap = dst->linesize[0];
499     wrap3 = rect->pict.linesize[0];
500     p = rect->pict.data[0];
501     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
502
503     if (dsty & 1) {
504         lum += dstx;
505         cb += skip2;
506         cr += skip2;
507
508         if (dstx & 1) {
509             YUVA_IN(y, u, v, a, p, pal);
510             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
511             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
512             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
513             cb++;
514             cr++;
515             lum++;
516             p += BPP;
517         }
518         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
519             YUVA_IN(y, u, v, a, p, pal);
520             u1 = u;
521             v1 = v;
522             a1 = a;
523             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
524
525             YUVA_IN(y, u, v, a, p + BPP, pal);
526             u1 += u;
527             v1 += v;
528             a1 += a;
529             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
530             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
531             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
532             cb++;
533             cr++;
534             p += 2 * BPP;
535             lum += 2;
536         }
537         if (w) {
538             YUVA_IN(y, u, v, a, p, pal);
539             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
540             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
541             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
542             p++;
543             lum++;
544         }
545         p += wrap3 - dstw * BPP;
546         lum += wrap - dstw - dstx;
547         cb += dst->linesize[1] - width2 - skip2;
548         cr += dst->linesize[2] - width2 - skip2;
549     }
550     for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
551         lum += dstx;
552         cb += skip2;
553         cr += skip2;
554
555         if (dstx & 1) {
556             YUVA_IN(y, u, v, a, p, pal);
557             u1 = u;
558             v1 = v;
559             a1 = a;
560             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
561             p += wrap3;
562             lum += wrap;
563             YUVA_IN(y, u, v, a, p, pal);
564             u1 += u;
565             v1 += v;
566             a1 += a;
567             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
568             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
569             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
570             cb++;
571             cr++;
572             p += -wrap3 + BPP;
573             lum += -wrap + 1;
574         }
575         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
576             YUVA_IN(y, u, v, a, p, pal);
577             u1 = u;
578             v1 = v;
579             a1 = a;
580             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
581
582             YUVA_IN(y, u, v, a, p + BPP, pal);
583             u1 += u;
584             v1 += v;
585             a1 += a;
586             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
587             p += wrap3;
588             lum += wrap;
589
590             YUVA_IN(y, u, v, a, p, pal);
591             u1 += u;
592             v1 += v;
593             a1 += a;
594             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
595
596             YUVA_IN(y, u, v, a, p + BPP, pal);
597             u1 += u;
598             v1 += v;
599             a1 += a;
600             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
601
602             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
603             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
604
605             cb++;
606             cr++;
607             p += -wrap3 + 2 * BPP;
608             lum += -wrap + 2;
609         }
610         if (w) {
611             YUVA_IN(y, u, v, a, p, pal);
612             u1 = u;
613             v1 = v;
614             a1 = a;
615             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
616             p += wrap3;
617             lum += wrap;
618             YUVA_IN(y, u, v, a, p, pal);
619             u1 += u;
620             v1 += v;
621             a1 += a;
622             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
623             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
624             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
625             cb++;
626             cr++;
627             p += -wrap3 + BPP;
628             lum += -wrap + 1;
629         }
630         p += wrap3 + (wrap3 - dstw * BPP);
631         lum += wrap + (wrap - dstw - dstx);
632         cb += dst->linesize[1] - width2 - skip2;
633         cr += dst->linesize[2] - width2 - skip2;
634     }
635     /* handle odd height */
636     if (h) {
637         lum += dstx;
638         cb += skip2;
639         cr += skip2;
640
641         if (dstx & 1) {
642             YUVA_IN(y, u, v, a, p, pal);
643             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
644             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
645             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
646             cb++;
647             cr++;
648             lum++;
649             p += BPP;
650         }
651         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
652             YUVA_IN(y, u, v, a, p, pal);
653             u1 = u;
654             v1 = v;
655             a1 = a;
656             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
657
658             YUVA_IN(y, u, v, a, p + BPP, pal);
659             u1 += u;
660             v1 += v;
661             a1 += a;
662             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
663             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
664             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
665             cb++;
666             cr++;
667             p += 2 * BPP;
668             lum += 2;
669         }
670         if (w) {
671             YUVA_IN(y, u, v, a, p, pal);
672             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
673             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
674             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
675         }
676     }
677 }
678
679 static void free_subpicture(SubPicture *sp)
680 {
681     avsubtitle_free(&sp->sub);
682 }
683
684 static void video_image_display(VideoState *is)
685 {
686     VideoPicture *vp;
687     SubPicture *sp;
688     AVPicture pict;
689     float aspect_ratio;
690     int width, height, x, y;
691     SDL_Rect rect;
692     int i;
693
694     vp = &is->pictq[is->pictq_rindex];
695     if (vp->bmp) {
696 #if CONFIG_AVFILTER
697          if (vp->picref->video->pixel_aspect.num == 0)
698              aspect_ratio = 0;
699          else
700              aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
701 #else
702
703         /* XXX: use variable in the frame */
704         if (is->video_st->sample_aspect_ratio.num)
705             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
706         else if (is->video_st->codec->sample_aspect_ratio.num)
707             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
708         else
709             aspect_ratio = 0;
710 #endif
711         if (aspect_ratio <= 0.0)
712             aspect_ratio = 1.0;
713         aspect_ratio *= (float)vp->width / (float)vp->height;
714         /* if an active format is indicated, then it overrides the
715            mpeg format */
716 #if 0
717         if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
718             is->dtg_active_format = is->video_st->codec->dtg_active_format;
719             printf("dtg_active_format=%d\n", is->dtg_active_format);
720         }
721 #endif
722 #if 0
723         switch(is->video_st->codec->dtg_active_format) {
724         case FF_DTG_AFD_SAME:
725         default:
726             /* nothing to do */
727             break;
728         case FF_DTG_AFD_4_3:
729             aspect_ratio = 4.0 / 3.0;
730             break;
731         case FF_DTG_AFD_16_9:
732             aspect_ratio = 16.0 / 9.0;
733             break;
734         case FF_DTG_AFD_14_9:
735             aspect_ratio = 14.0 / 9.0;
736             break;
737         case FF_DTG_AFD_4_3_SP_14_9:
738             aspect_ratio = 14.0 / 9.0;
739             break;
740         case FF_DTG_AFD_16_9_SP_14_9:
741             aspect_ratio = 14.0 / 9.0;
742             break;
743         case FF_DTG_AFD_SP_4_3:
744             aspect_ratio = 4.0 / 3.0;
745             break;
746         }
747 #endif
748
749         if (is->subtitle_st)
750         {
751             if (is->subpq_size > 0)
752             {
753                 sp = &is->subpq[is->subpq_rindex];
754
755                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
756                 {
757                     SDL_LockYUVOverlay (vp->bmp);
758
759                     pict.data[0] = vp->bmp->pixels[0];
760                     pict.data[1] = vp->bmp->pixels[2];
761                     pict.data[2] = vp->bmp->pixels[1];
762
763                     pict.linesize[0] = vp->bmp->pitches[0];
764                     pict.linesize[1] = vp->bmp->pitches[2];
765                     pict.linesize[2] = vp->bmp->pitches[1];
766
767                     for (i = 0; i < sp->sub.num_rects; i++)
768                         blend_subrect(&pict, sp->sub.rects[i],
769                                       vp->bmp->w, vp->bmp->h);
770
771                     SDL_UnlockYUVOverlay (vp->bmp);
772                 }
773             }
774         }
775
776
777         /* XXX: we suppose the screen has a 1.0 pixel ratio */
778         height = is->height;
779         width = ((int)rint(height * aspect_ratio)) & ~1;
780         if (width > is->width) {
781             width = is->width;
782             height = ((int)rint(width / aspect_ratio)) & ~1;
783         }
784         x = (is->width - width) / 2;
785         y = (is->height - height) / 2;
786         if (!is->no_background) {
787             /* fill the background */
788             //            fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
789         } else {
790             is->no_background = 0;
791         }
792         rect.x = is->xleft + x;
793         rect.y = is->ytop  + y;
794         rect.w = width;
795         rect.h = height;
796         SDL_DisplayYUVOverlay(vp->bmp, &rect);
797     } else {
798 #if 0
799         fill_rectangle(screen,
800                        is->xleft, is->ytop, is->width, is->height,
801                        QERGB(0x00, 0x00, 0x00));
802 #endif
803     }
804 }
805
806 static inline int compute_mod(int a, int b)
807 {
808     a = a % b;
809     if (a >= 0)
810         return a;
811     else
812         return a + b;
813 }
814
815 static void video_audio_display(VideoState *s)
816 {
817     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
818     int ch, channels, h, h2, bgcolor, fgcolor;
819     int16_t time_diff;
820     int rdft_bits, nb_freq;
821
822     for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
823         ;
824     nb_freq= 1<<(rdft_bits-1);
825
826     /* compute display index : center on currently output samples */
827     channels = s->audio_st->codec->channels;
828     nb_display_channels = channels;
829     if (!s->paused) {
830         int data_used= s->show_audio==1 ? s->width : (2*nb_freq);
831         n = 2 * channels;
832         delay = audio_write_get_buf_size(s);
833         delay /= n;
834
835         /* to be more precise, we take into account the time spent since
836            the last buffer computation */
837         if (audio_callback_time) {
838             time_diff = av_gettime() - audio_callback_time;
839             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
840         }
841
842         delay += 2*data_used;
843         if (delay < data_used)
844             delay = data_used;
845
846         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
847         if(s->show_audio==1){
848             h= INT_MIN;
849             for(i=0; i<1000; i+=channels){
850                 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
851                 int a= s->sample_array[idx];
852                 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
853                 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
854                 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
855                 int score= a-d;
856                 if(h<score && (b^c)<0){
857                     h= score;
858                     i_start= idx;
859                 }
860             }
861         }
862
863         s->last_i_start = i_start;
864     } else {
865         i_start = s->last_i_start;
866     }
867
868     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
869     if(s->show_audio==1){
870         fill_rectangle(screen,
871                        s->xleft, s->ytop, s->width, s->height,
872                        bgcolor);
873
874         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
875
876         /* total height for one channel */
877         h = s->height / nb_display_channels;
878         /* graph height / 2 */
879         h2 = (h * 9) / 20;
880         for(ch = 0;ch < nb_display_channels; ch++) {
881             i = i_start + ch;
882             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
883             for(x = 0; x < s->width; x++) {
884                 y = (s->sample_array[i] * h2) >> 15;
885                 if (y < 0) {
886                     y = -y;
887                     ys = y1 - y;
888                 } else {
889                     ys = y1;
890                 }
891                 fill_rectangle(screen,
892                                s->xleft + x, ys, 1, y,
893                                fgcolor);
894                 i += channels;
895                 if (i >= SAMPLE_ARRAY_SIZE)
896                     i -= SAMPLE_ARRAY_SIZE;
897             }
898         }
899
900         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
901
902         for(ch = 1;ch < nb_display_channels; ch++) {
903             y = s->ytop + ch * h;
904             fill_rectangle(screen,
905                            s->xleft, y, s->width, 1,
906                            fgcolor);
907         }
908         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
909     }else{
910         nb_display_channels= FFMIN(nb_display_channels, 2);
911         if(rdft_bits != s->rdft_bits){
912             av_rdft_end(s->rdft);
913             av_free(s->rdft_data);
914             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
915             s->rdft_bits= rdft_bits;
916             s->rdft_data= av_malloc(4*nb_freq*sizeof(*s->rdft_data));
917         }
918         {
919             FFTSample *data[2];
920             for(ch = 0;ch < nb_display_channels; ch++) {
921                 data[ch] = s->rdft_data + 2*nb_freq*ch;
922                 i = i_start + ch;
923                 for(x = 0; x < 2*nb_freq; x++) {
924                     double w= (x-nb_freq)*(1.0/nb_freq);
925                     data[ch][x]= s->sample_array[i]*(1.0-w*w);
926                     i += channels;
927                     if (i >= SAMPLE_ARRAY_SIZE)
928                         i -= SAMPLE_ARRAY_SIZE;
929                 }
930                 av_rdft_calc(s->rdft, data[ch]);
931             }
932             //least efficient way to do this, we should of course directly access it but its more than fast enough
933             for(y=0; y<s->height; y++){
934                 double w= 1/sqrt(nb_freq);
935                 int a= sqrt(w*sqrt(data[0][2*y+0]*data[0][2*y+0] + data[0][2*y+1]*data[0][2*y+1]));
936                 int b= (nb_display_channels == 2 ) ? sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0]
937                        + data[1][2*y+1]*data[1][2*y+1])) : a;
938                 a= FFMIN(a,255);
939                 b= FFMIN(b,255);
940                 fgcolor = SDL_MapRGB(screen->format, a, b, (a+b)/2);
941
942                 fill_rectangle(screen,
943                             s->xpos, s->height-y, 1, 1,
944                             fgcolor);
945             }
946         }
947         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
948         s->xpos++;
949         if(s->xpos >= s->width)
950             s->xpos= s->xleft;
951     }
952 }
953
954 static int video_open(VideoState *is){
955     int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
956     int w,h;
957
958     if(is_full_screen) flags |= SDL_FULLSCREEN;
959     else               flags |= SDL_RESIZABLE;
960
961     if (is_full_screen && fs_screen_width) {
962         w = fs_screen_width;
963         h = fs_screen_height;
964     } else if(!is_full_screen && screen_width){
965         w = screen_width;
966         h = screen_height;
967 #if CONFIG_AVFILTER
968     }else if (is->out_video_filter && is->out_video_filter->inputs[0]){
969         w = is->out_video_filter->inputs[0]->w;
970         h = is->out_video_filter->inputs[0]->h;
971 #else
972     }else if (is->video_st && is->video_st->codec->width){
973         w = is->video_st->codec->width;
974         h = is->video_st->codec->height;
975 #endif
976     } else {
977         w = 640;
978         h = 480;
979     }
980     if(screen && is->width == screen->w && screen->w == w
981        && is->height== screen->h && screen->h == h)
982         return 0;
983
984 #ifndef __APPLE__
985     screen = SDL_SetVideoMode(w, h, 0, flags);
986 #else
987     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
988     screen = SDL_SetVideoMode(w, h, 24, flags);
989 #endif
990     if (!screen) {
991         fprintf(stderr, "SDL: could not set video mode - exiting\n");
992         return -1;
993     }
994     if (!window_title)
995         window_title = input_filename;
996     SDL_WM_SetCaption(window_title, window_title);
997
998     is->width = screen->w;
999     is->height = screen->h;
1000
1001     return 0;
1002 }
1003
1004 /* display the current picture, if any */
1005 static void video_display(VideoState *is)
1006 {
1007     if(!screen)
1008         video_open(cur_stream);
1009     if (is->audio_st && is->show_audio)
1010         video_audio_display(is);
1011     else if (is->video_st)
1012         video_image_display(is);
1013 }
1014
1015 static int refresh_thread(void *opaque)
1016 {
1017     VideoState *is= opaque;
1018     while(!is->abort_request){
1019     SDL_Event event;
1020     event.type = FF_REFRESH_EVENT;
1021     event.user.data1 = opaque;
1022         if(!is->refresh){
1023             is->refresh=1;
1024     SDL_PushEvent(&event);
1025         }
1026         usleep(is->audio_st && is->show_audio ? rdftspeed*1000 : 5000); //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
1027     }
1028     return 0;
1029 }
1030
1031 /* get the current audio clock value */
1032 static double get_audio_clock(VideoState *is)
1033 {
1034     double pts;
1035     int hw_buf_size, bytes_per_sec;
1036     pts = is->audio_clock;
1037     hw_buf_size = audio_write_get_buf_size(is);
1038     bytes_per_sec = 0;
1039     if (is->audio_st) {
1040         bytes_per_sec = is->audio_st->codec->sample_rate *
1041             2 * is->audio_st->codec->channels;
1042     }
1043     if (bytes_per_sec)
1044         pts -= (double)hw_buf_size / bytes_per_sec;
1045     return pts;
1046 }
1047
1048 /* get the current video clock value */
1049 static double get_video_clock(VideoState *is)
1050 {
1051     if (is->paused) {
1052         return is->video_current_pts;
1053     } else {
1054         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1055     }
1056 }
1057
1058 /* get the current external clock value */
1059 static double get_external_clock(VideoState *is)
1060 {
1061     int64_t ti;
1062     ti = av_gettime();
1063     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1064 }
1065
1066 /* get the current master clock value */
1067 static double get_master_clock(VideoState *is)
1068 {
1069     double val;
1070
1071     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1072         if (is->video_st)
1073             val = get_video_clock(is);
1074         else
1075             val = get_audio_clock(is);
1076     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1077         if (is->audio_st)
1078             val = get_audio_clock(is);
1079         else
1080             val = get_video_clock(is);
1081     } else {
1082         val = get_external_clock(is);
1083     }
1084     return val;
1085 }
1086
1087 /* seek in the stream */
1088 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1089 {
1090     if (!is->seek_req) {
1091         is->seek_pos = pos;
1092         is->seek_rel = rel;
1093         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1094         if (seek_by_bytes)
1095             is->seek_flags |= AVSEEK_FLAG_BYTE;
1096         is->seek_req = 1;
1097     }
1098 }
1099
1100 /* pause or resume the video */
1101 static void stream_pause(VideoState *is)
1102 {
1103     if (is->paused) {
1104         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1105         if(is->read_pause_return != AVERROR(ENOSYS)){
1106             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1107         }
1108         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1109     }
1110     is->paused = !is->paused;
1111 }
1112
1113 static double compute_target_time(double frame_current_pts, VideoState *is)
1114 {
1115     double delay, sync_threshold, diff;
1116
1117     /* compute nominal delay */
1118     delay = frame_current_pts - is->frame_last_pts;
1119     if (delay <= 0 || delay >= 10.0) {
1120         /* if incorrect delay, use previous one */
1121         delay = is->frame_last_delay;
1122     } else {
1123         is->frame_last_delay = delay;
1124     }
1125     is->frame_last_pts = frame_current_pts;
1126
1127     /* update delay to follow master synchronisation source */
1128     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1129          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1130         /* if video is slave, we try to correct big delays by
1131            duplicating or deleting a frame */
1132         diff = get_video_clock(is) - get_master_clock(is);
1133
1134         /* skip or repeat frame. We take into account the
1135            delay to compute the threshold. I still don't know
1136            if it is the best guess */
1137         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1138         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1139             if (diff <= -sync_threshold)
1140                 delay = 0;
1141             else if (diff >= sync_threshold)
1142                 delay = 2 * delay;
1143         }
1144     }
1145     is->frame_timer += delay;
1146 #if defined(DEBUG_SYNC)
1147     printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1148             delay, actual_delay, frame_current_pts, -diff);
1149 #endif
1150
1151     return is->frame_timer;
1152 }
1153
1154 /* called to display each frame */
1155 static void video_refresh_timer(void *opaque)
1156 {
1157     VideoState *is = opaque;
1158     VideoPicture *vp;
1159
1160     SubPicture *sp, *sp2;
1161
1162     if (is->video_st) {
1163 retry:
1164         if (is->pictq_size == 0) {
1165             //nothing to do, no picture to display in the que
1166         } else {
1167             double time= av_gettime()/1000000.0;
1168             double next_target;
1169             /* dequeue the picture */
1170             vp = &is->pictq[is->pictq_rindex];
1171
1172             if(time < vp->target_clock)
1173                 return;
1174             /* update current video pts */
1175             is->video_current_pts = vp->pts;
1176             is->video_current_pts_drift = is->video_current_pts - time;
1177             is->video_current_pos = vp->pos;
1178             if(is->pictq_size > 1){
1179                 VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
1180                 assert(nextvp->target_clock >= vp->target_clock);
1181                 next_target= nextvp->target_clock;
1182             }else{
1183                 next_target= vp->target_clock + is->video_clock - vp->pts; //FIXME pass durations cleanly
1184             }
1185             if(framedrop && time > next_target){
1186                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1187                 if(is->pictq_size > 1 || time > next_target + 0.5){
1188                     /* update queue size and signal for next picture */
1189                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1190                         is->pictq_rindex = 0;
1191
1192                     SDL_LockMutex(is->pictq_mutex);
1193                     is->pictq_size--;
1194                     SDL_CondSignal(is->pictq_cond);
1195                     SDL_UnlockMutex(is->pictq_mutex);
1196                     goto retry;
1197                 }
1198             }
1199
1200             if(is->subtitle_st) {
1201                 if (is->subtitle_stream_changed) {
1202                     SDL_LockMutex(is->subpq_mutex);
1203
1204                     while (is->subpq_size) {
1205                         free_subpicture(&is->subpq[is->subpq_rindex]);
1206
1207                         /* update queue size and signal for next picture */
1208                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1209                             is->subpq_rindex = 0;
1210
1211                         is->subpq_size--;
1212                     }
1213                     is->subtitle_stream_changed = 0;
1214
1215                     SDL_CondSignal(is->subpq_cond);
1216                     SDL_UnlockMutex(is->subpq_mutex);
1217                 } else {
1218                     if (is->subpq_size > 0) {
1219                         sp = &is->subpq[is->subpq_rindex];
1220
1221                         if (is->subpq_size > 1)
1222                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1223                         else
1224                             sp2 = NULL;
1225
1226                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1227                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1228                         {
1229                             free_subpicture(sp);
1230
1231                             /* update queue size and signal for next picture */
1232                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1233                                 is->subpq_rindex = 0;
1234
1235                             SDL_LockMutex(is->subpq_mutex);
1236                             is->subpq_size--;
1237                             SDL_CondSignal(is->subpq_cond);
1238                             SDL_UnlockMutex(is->subpq_mutex);
1239                         }
1240                     }
1241                 }
1242             }
1243
1244             /* display picture */
1245             video_display(is);
1246
1247             /* update queue size and signal for next picture */
1248             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1249                 is->pictq_rindex = 0;
1250
1251             SDL_LockMutex(is->pictq_mutex);
1252             is->pictq_size--;
1253             SDL_CondSignal(is->pictq_cond);
1254             SDL_UnlockMutex(is->pictq_mutex);
1255         }
1256     } else if (is->audio_st) {
1257         /* draw the next audio frame */
1258
1259         /* if only audio stream, then display the audio bars (better
1260            than nothing, just to test the implementation */
1261
1262         /* display picture */
1263         video_display(is);
1264     }
1265     if (show_status) {
1266         static int64_t last_time;
1267         int64_t cur_time;
1268         int aqsize, vqsize, sqsize;
1269         double av_diff;
1270
1271         cur_time = av_gettime();
1272         if (!last_time || (cur_time - last_time) >= 30000) {
1273             aqsize = 0;
1274             vqsize = 0;
1275             sqsize = 0;
1276             if (is->audio_st)
1277                 aqsize = is->audioq.size;
1278             if (is->video_st)
1279                 vqsize = is->videoq.size;
1280             if (is->subtitle_st)
1281                 sqsize = is->subtitleq.size;
1282             av_diff = 0;
1283             if (is->audio_st && is->video_st)
1284                 av_diff = get_audio_clock(is) - get_video_clock(is);
1285             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1286                    get_master_clock(is), av_diff, FFMAX(is->skip_frames-1, 0), aqsize / 1024, vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1287             fflush(stdout);
1288             last_time = cur_time;
1289         }
1290     }
1291 }
1292
1293 static void stream_close(VideoState *is)
1294 {
1295     VideoPicture *vp;
1296     int i;
1297     /* XXX: use a special url_shutdown call to abort parse cleanly */
1298     is->abort_request = 1;
1299     SDL_WaitThread(is->parse_tid, NULL);
1300     SDL_WaitThread(is->refresh_tid, NULL);
1301
1302     /* free all pictures */
1303     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1304         vp = &is->pictq[i];
1305 #if CONFIG_AVFILTER
1306         if (vp->picref) {
1307             avfilter_unref_buffer(vp->picref);
1308             vp->picref = NULL;
1309         }
1310 #endif
1311         if (vp->bmp) {
1312             SDL_FreeYUVOverlay(vp->bmp);
1313             vp->bmp = NULL;
1314         }
1315     }
1316     SDL_DestroyMutex(is->pictq_mutex);
1317     SDL_DestroyCond(is->pictq_cond);
1318     SDL_DestroyMutex(is->subpq_mutex);
1319     SDL_DestroyCond(is->subpq_cond);
1320 #if !CONFIG_AVFILTER
1321     if (is->img_convert_ctx)
1322         sws_freeContext(is->img_convert_ctx);
1323 #endif
1324     av_free(is);
1325 }
1326
1327 static void do_exit(void)
1328 {
1329     if (cur_stream) {
1330         stream_close(cur_stream);
1331         cur_stream = NULL;
1332     }
1333     uninit_opts();
1334 #if CONFIG_AVFILTER
1335     avfilter_uninit();
1336 #endif
1337     if (show_status)
1338         printf("\n");
1339     SDL_Quit();
1340     av_log(NULL, AV_LOG_QUIET, "");
1341     exit(0);
1342 }
1343
1344 /* allocate a picture (needs to do that in main thread to avoid
1345    potential locking problems */
1346 static void alloc_picture(void *opaque)
1347 {
1348     VideoState *is = opaque;
1349     VideoPicture *vp;
1350
1351     vp = &is->pictq[is->pictq_windex];
1352
1353     if (vp->bmp)
1354         SDL_FreeYUVOverlay(vp->bmp);
1355
1356 #if CONFIG_AVFILTER
1357     if (vp->picref)
1358         avfilter_unref_buffer(vp->picref);
1359     vp->picref = NULL;
1360
1361     vp->width   = is->out_video_filter->inputs[0]->w;
1362     vp->height  = is->out_video_filter->inputs[0]->h;
1363     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1364 #else
1365     vp->width   = is->video_st->codec->width;
1366     vp->height  = is->video_st->codec->height;
1367     vp->pix_fmt = is->video_st->codec->pix_fmt;
1368 #endif
1369
1370     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1371                                    SDL_YV12_OVERLAY,
1372                                    screen);
1373     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1374         /* SDL allocates a buffer smaller than requested if the video
1375          * overlay hardware is unable to support the requested size. */
1376         fprintf(stderr, "Error: the video system does not support an image\n"
1377                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1378                         "to reduce the image size.\n", vp->width, vp->height );
1379         do_exit();
1380     }
1381
1382     SDL_LockMutex(is->pictq_mutex);
1383     vp->allocated = 1;
1384     SDL_CondSignal(is->pictq_cond);
1385     SDL_UnlockMutex(is->pictq_mutex);
1386 }
1387
1388 /**
1389  *
1390  * @param pts the dts of the pkt / pts of the frame and guessed if not known
1391  */
1392 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1393 {
1394     VideoPicture *vp;
1395     int dst_pix_fmt;
1396 #if CONFIG_AVFILTER
1397     AVPicture pict_src;
1398 #endif
1399     /* wait until we have space to put a new picture */
1400     SDL_LockMutex(is->pictq_mutex);
1401
1402     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1403         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1404
1405     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1406            !is->videoq.abort_request) {
1407         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1408     }
1409     SDL_UnlockMutex(is->pictq_mutex);
1410
1411     if (is->videoq.abort_request)
1412         return -1;
1413
1414     vp = &is->pictq[is->pictq_windex];
1415
1416     /* alloc or resize hardware picture buffer */
1417     if (!vp->bmp ||
1418 #if CONFIG_AVFILTER
1419         vp->width  != is->out_video_filter->inputs[0]->w ||
1420         vp->height != is->out_video_filter->inputs[0]->h) {
1421 #else
1422         vp->width != is->video_st->codec->width ||
1423         vp->height != is->video_st->codec->height) {
1424 #endif
1425         SDL_Event event;
1426
1427         vp->allocated = 0;
1428
1429         /* the allocation must be done in the main thread to avoid
1430            locking problems */
1431         event.type = FF_ALLOC_EVENT;
1432         event.user.data1 = is;
1433         SDL_PushEvent(&event);
1434
1435         /* wait until the picture is allocated */
1436         SDL_LockMutex(is->pictq_mutex);
1437         while (!vp->allocated && !is->videoq.abort_request) {
1438             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1439         }
1440         SDL_UnlockMutex(is->pictq_mutex);
1441
1442         if (is->videoq.abort_request)
1443             return -1;
1444     }
1445
1446     /* if the frame is not skipped, then display it */
1447     if (vp->bmp) {
1448         AVPicture pict;
1449 #if CONFIG_AVFILTER
1450         if(vp->picref)
1451             avfilter_unref_buffer(vp->picref);
1452         vp->picref = src_frame->opaque;
1453 #endif
1454
1455         /* get a pointer on the bitmap */
1456         SDL_LockYUVOverlay (vp->bmp);
1457
1458         dst_pix_fmt = PIX_FMT_YUV420P;
1459         memset(&pict,0,sizeof(AVPicture));
1460         pict.data[0] = vp->bmp->pixels[0];
1461         pict.data[1] = vp->bmp->pixels[2];
1462         pict.data[2] = vp->bmp->pixels[1];
1463
1464         pict.linesize[0] = vp->bmp->pitches[0];
1465         pict.linesize[1] = vp->bmp->pitches[2];
1466         pict.linesize[2] = vp->bmp->pitches[1];
1467
1468 #if CONFIG_AVFILTER
1469         pict_src.data[0] = src_frame->data[0];
1470         pict_src.data[1] = src_frame->data[1];
1471         pict_src.data[2] = src_frame->data[2];
1472
1473         pict_src.linesize[0] = src_frame->linesize[0];
1474         pict_src.linesize[1] = src_frame->linesize[1];
1475         pict_src.linesize[2] = src_frame->linesize[2];
1476
1477         //FIXME use direct rendering
1478         av_picture_copy(&pict, &pict_src,
1479                         vp->pix_fmt, vp->width, vp->height);
1480 #else
1481         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1482         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1483             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1484             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1485         if (is->img_convert_ctx == NULL) {
1486             fprintf(stderr, "Cannot initialize the conversion context\n");
1487             exit(1);
1488         }
1489         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1490                   0, vp->height, pict.data, pict.linesize);
1491 #endif
1492         /* update the bitmap content */
1493         SDL_UnlockYUVOverlay(vp->bmp);
1494
1495         vp->pts = pts;
1496         vp->pos = pos;
1497
1498         /* now we can update the picture count */
1499         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1500             is->pictq_windex = 0;
1501         SDL_LockMutex(is->pictq_mutex);
1502         vp->target_clock= compute_target_time(vp->pts, is);
1503
1504         is->pictq_size++;
1505         SDL_UnlockMutex(is->pictq_mutex);
1506     }
1507     return 0;
1508 }
1509
1510 /**
1511  * compute the exact PTS for the picture if it is omitted in the stream
1512  * @param pts1 the dts of the pkt / pts of the frame
1513  */
1514 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1515 {
1516     double frame_delay, pts;
1517
1518     pts = pts1;
1519
1520     if (pts != 0) {
1521         /* update video clock with pts, if present */
1522         is->video_clock = pts;
1523     } else {
1524         pts = is->video_clock;
1525     }
1526     /* update video clock for next frame */
1527     frame_delay = av_q2d(is->video_st->codec->time_base);
1528     /* for MPEG2, the frame can be repeated, so we update the
1529        clock accordingly */
1530     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1531     is->video_clock += frame_delay;
1532
1533 #if defined(DEBUG_SYNC) && 0
1534     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1535            av_get_pict_type_char(src_frame->pict_type), pts, pts1);
1536 #endif
1537     return queue_picture(is, src_frame, pts, pos);
1538 }
1539
1540 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1541 {
1542     int len1, got_picture, i;
1543
1544         if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1545             return -1;
1546
1547         if(pkt->data == flush_pkt.data){
1548             avcodec_flush_buffers(is->video_st->codec);
1549
1550             SDL_LockMutex(is->pictq_mutex);
1551             //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1552             for(i=0; i<VIDEO_PICTURE_QUEUE_SIZE; i++){
1553                 is->pictq[i].target_clock= 0;
1554             }
1555             while (is->pictq_size && !is->videoq.abort_request) {
1556                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1557             }
1558             is->video_current_pos= -1;
1559             SDL_UnlockMutex(is->pictq_mutex);
1560
1561             init_pts_correction(&is->pts_ctx);
1562             is->frame_last_pts= AV_NOPTS_VALUE;
1563             is->frame_last_delay = 0;
1564             is->frame_timer = (double)av_gettime() / 1000000.0;
1565             is->skip_frames= 1;
1566             is->skip_frames_index= 0;
1567             return 0;
1568         }
1569
1570         /* NOTE: ipts is the PTS of the _first_ picture beginning in
1571            this packet, if any */
1572         is->video_st->codec->reordered_opaque= pkt->pts;
1573         len1 = avcodec_decode_video2(is->video_st->codec,
1574                                     frame, &got_picture,
1575                                     pkt);
1576
1577         if (got_picture) {
1578             if (decoder_reorder_pts == -1) {
1579                 *pts = guess_correct_pts(&is->pts_ctx, frame->reordered_opaque, pkt->dts);
1580             } else if (decoder_reorder_pts) {
1581                 *pts = frame->reordered_opaque;
1582             } else {
1583                 *pts = pkt->dts;
1584             }
1585
1586             if (*pts == AV_NOPTS_VALUE) {
1587                 *pts = 0;
1588             }
1589         }
1590
1591 //            if (len1 < 0)
1592 //                break;
1593     if (got_picture){
1594         is->skip_frames_index += 1;
1595         if(is->skip_frames_index >= is->skip_frames){
1596             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1597             return 1;
1598         }
1599
1600     }
1601     return 0;
1602 }
1603
1604 #if CONFIG_AVFILTER
1605 typedef struct {
1606     VideoState *is;
1607     AVFrame *frame;
1608     int use_dr1;
1609 } FilterPriv;
1610
1611 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1612 {
1613     AVFilterContext *ctx = codec->opaque;
1614     AVFilterBufferRef  *ref;
1615     int perms = AV_PERM_WRITE;
1616     int i, w, h, stride[4];
1617     unsigned edge;
1618
1619     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1620         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1621         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1622         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1623     }
1624     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1625
1626     w = codec->width;
1627     h = codec->height;
1628     avcodec_align_dimensions2(codec, &w, &h, stride);
1629     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1630     w += edge << 1;
1631     h += edge << 1;
1632
1633     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1634         return -1;
1635
1636     ref->video->w = codec->width;
1637     ref->video->h = codec->height;
1638     for(i = 0; i < 4; i ++) {
1639         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1640         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1641
1642         if (ref->data[i]) {
1643             ref->data[i]    += (edge >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1644         }
1645         pic->data[i]     = ref->data[i];
1646         pic->linesize[i] = ref->linesize[i];
1647     }
1648     pic->opaque = ref;
1649     pic->age    = INT_MAX;
1650     pic->type   = FF_BUFFER_TYPE_USER;
1651     pic->reordered_opaque = codec->reordered_opaque;
1652     return 0;
1653 }
1654
1655 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1656 {
1657     memset(pic->data, 0, sizeof(pic->data));
1658     avfilter_unref_buffer(pic->opaque);
1659 }
1660
1661 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1662 {
1663     AVFilterBufferRef *ref = pic->opaque;
1664
1665     if (pic->data[0] == NULL) {
1666         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1667         return codec->get_buffer(codec, pic);
1668     }
1669
1670     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1671         (codec->pix_fmt != ref->format)) {
1672         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1673         return -1;
1674     }
1675
1676     pic->reordered_opaque = codec->reordered_opaque;
1677     return 0;
1678 }
1679
1680 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1681 {
1682     FilterPriv *priv = ctx->priv;
1683     AVCodecContext *codec;
1684     if(!opaque) return -1;
1685
1686     priv->is = opaque;
1687     codec    = priv->is->video_st->codec;
1688     codec->opaque = ctx;
1689     if(codec->codec->capabilities & CODEC_CAP_DR1) {
1690         priv->use_dr1 = 1;
1691         codec->get_buffer     = input_get_buffer;
1692         codec->release_buffer = input_release_buffer;
1693         codec->reget_buffer   = input_reget_buffer;
1694     }
1695
1696     priv->frame = avcodec_alloc_frame();
1697
1698     return 0;
1699 }
1700
1701 static void input_uninit(AVFilterContext *ctx)
1702 {
1703     FilterPriv *priv = ctx->priv;
1704     av_free(priv->frame);
1705 }
1706
1707 static int input_request_frame(AVFilterLink *link)
1708 {
1709     FilterPriv *priv = link->src->priv;
1710     AVFilterBufferRef *picref;
1711     int64_t pts = 0;
1712     AVPacket pkt;
1713     int ret;
1714
1715     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1716         av_free_packet(&pkt);
1717     if (ret < 0)
1718         return -1;
1719
1720     if(priv->use_dr1) {
1721         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1722     } else {
1723         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1724         av_image_copy(picref->data, picref->linesize,
1725                       priv->frame->data, priv->frame->linesize,
1726                       picref->format, link->w, link->h);
1727     }
1728     av_free_packet(&pkt);
1729
1730     picref->pts = pts;
1731     picref->pos = pkt.pos;
1732     picref->video->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
1733     avfilter_start_frame(link, picref);
1734     avfilter_draw_slice(link, 0, link->h, 1);
1735     avfilter_end_frame(link);
1736
1737     return 0;
1738 }
1739
1740 static int input_query_formats(AVFilterContext *ctx)
1741 {
1742     FilterPriv *priv = ctx->priv;
1743     enum PixelFormat pix_fmts[] = {
1744         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1745     };
1746
1747     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1748     return 0;
1749 }
1750
1751 static int input_config_props(AVFilterLink *link)
1752 {
1753     FilterPriv *priv  = link->src->priv;
1754     AVCodecContext *c = priv->is->video_st->codec;
1755
1756     link->w = c->width;
1757     link->h = c->height;
1758     link->time_base = priv->is->video_st->time_base;
1759
1760     return 0;
1761 }
1762
1763 static AVFilter input_filter =
1764 {
1765     .name      = "ffplay_input",
1766
1767     .priv_size = sizeof(FilterPriv),
1768
1769     .init      = input_init,
1770     .uninit    = input_uninit,
1771
1772     .query_formats = input_query_formats,
1773
1774     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1775     .outputs   = (AVFilterPad[]) {{ .name = "default",
1776                                     .type = AVMEDIA_TYPE_VIDEO,
1777                                     .request_frame = input_request_frame,
1778                                     .config_props  = input_config_props, },
1779                                   { .name = NULL }},
1780 };
1781
1782 #endif  /* CONFIG_AVFILTER */
1783
1784 static int video_thread(void *arg)
1785 {
1786     VideoState *is = arg;
1787     AVFrame *frame= avcodec_alloc_frame();
1788     int64_t pts_int;
1789     double pts;
1790     int ret;
1791
1792 #if CONFIG_AVFILTER
1793     int64_t pos;
1794     char sws_flags_str[128];
1795     FFSinkContext ffsink_ctx = { .pix_fmt = PIX_FMT_YUV420P };
1796     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1797     AVFilterGraph *graph = avfilter_graph_alloc();
1798     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1799     graph->scale_sws_opts = av_strdup(sws_flags_str);
1800
1801     if (avfilter_graph_create_filter(&filt_src, &input_filter, "src",
1802                                      NULL, is, graph) < 0)
1803         goto the_end;
1804     if (avfilter_graph_create_filter(&filt_out, &ffsink, "out",
1805                                      NULL, &ffsink_ctx, graph) < 0)
1806         goto the_end;
1807
1808     if(vfilters) {
1809         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1810         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1811
1812         outputs->name    = av_strdup("in");
1813         outputs->filter_ctx = filt_src;
1814         outputs->pad_idx = 0;
1815         outputs->next    = NULL;
1816
1817         inputs->name    = av_strdup("out");
1818         inputs->filter_ctx = filt_out;
1819         inputs->pad_idx = 0;
1820         inputs->next    = NULL;
1821
1822         if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
1823             goto the_end;
1824         av_freep(&vfilters);
1825     } else {
1826         if(avfilter_link(filt_src, 0, filt_out, 0) < 0)          goto the_end;
1827     }
1828
1829     if (avfilter_graph_config(graph, NULL) < 0)
1830         goto the_end;
1831
1832     is->out_video_filter = filt_out;
1833 #endif
1834
1835     for(;;) {
1836 #if !CONFIG_AVFILTER
1837         AVPacket pkt;
1838 #else
1839         AVFilterBufferRef *picref;
1840         AVRational tb;
1841 #endif
1842         while (is->paused && !is->videoq.abort_request)
1843             SDL_Delay(10);
1844 #if CONFIG_AVFILTER
1845         ret = get_filtered_video_frame(filt_out, frame, &picref, &tb);
1846         if (picref) {
1847             pts_int = picref->pts;
1848             pos     = picref->pos;
1849             frame->opaque = picref;
1850         }
1851
1852         if (av_cmp_q(tb, is->video_st->time_base)) {
1853             int64_t pts1 = pts_int;
1854             pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1855             av_log(NULL, AV_LOG_DEBUG, "video_thread(): "
1856                    "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1857                    tb.num, tb.den, pts1,
1858                    is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1859         }
1860 #else
1861         ret = get_video_frame(is, frame, &pts_int, &pkt);
1862 #endif
1863
1864         if (ret < 0) goto the_end;
1865
1866         if (!ret)
1867             continue;
1868
1869         pts = pts_int*av_q2d(is->video_st->time_base);
1870
1871 #if CONFIG_AVFILTER
1872         ret = output_picture2(is, frame, pts, pos);
1873 #else
1874         ret = output_picture2(is, frame, pts,  pkt.pos);
1875         av_free_packet(&pkt);
1876 #endif
1877         if (ret < 0)
1878             goto the_end;
1879
1880         if (step)
1881             if (cur_stream)
1882                 stream_pause(cur_stream);
1883     }
1884  the_end:
1885 #if CONFIG_AVFILTER
1886     avfilter_graph_free(graph);
1887     av_freep(&graph);
1888 #endif
1889     av_free(frame);
1890     return 0;
1891 }
1892
1893 static int subtitle_thread(void *arg)
1894 {
1895     VideoState *is = arg;
1896     SubPicture *sp;
1897     AVPacket pkt1, *pkt = &pkt1;
1898     int len1, got_subtitle;
1899     double pts;
1900     int i, j;
1901     int r, g, b, y, u, v, a;
1902
1903     for(;;) {
1904         while (is->paused && !is->subtitleq.abort_request) {
1905             SDL_Delay(10);
1906         }
1907         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1908             break;
1909
1910         if(pkt->data == flush_pkt.data){
1911             avcodec_flush_buffers(is->subtitle_st->codec);
1912             continue;
1913         }
1914         SDL_LockMutex(is->subpq_mutex);
1915         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1916                !is->subtitleq.abort_request) {
1917             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1918         }
1919         SDL_UnlockMutex(is->subpq_mutex);
1920
1921         if (is->subtitleq.abort_request)
1922             goto the_end;
1923
1924         sp = &is->subpq[is->subpq_windex];
1925
1926        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1927            this packet, if any */
1928         pts = 0;
1929         if (pkt->pts != AV_NOPTS_VALUE)
1930             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1931
1932         len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1933                                     &sp->sub, &got_subtitle,
1934                                     pkt);
1935 //            if (len1 < 0)
1936 //                break;
1937         if (got_subtitle && sp->sub.format == 0) {
1938             sp->pts = pts;
1939
1940             for (i = 0; i < sp->sub.num_rects; i++)
1941             {
1942                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1943                 {
1944                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1945                     y = RGB_TO_Y_CCIR(r, g, b);
1946                     u = RGB_TO_U_CCIR(r, g, b, 0);
1947                     v = RGB_TO_V_CCIR(r, g, b, 0);
1948                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1949                 }
1950             }
1951
1952             /* now we can update the picture count */
1953             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1954                 is->subpq_windex = 0;
1955             SDL_LockMutex(is->subpq_mutex);
1956             is->subpq_size++;
1957             SDL_UnlockMutex(is->subpq_mutex);
1958         }
1959         av_free_packet(pkt);
1960 //        if (step)
1961 //            if (cur_stream)
1962 //                stream_pause(cur_stream);
1963     }
1964  the_end:
1965     return 0;
1966 }
1967
1968 /* copy samples for viewing in editor window */
1969 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1970 {
1971     int size, len, channels;
1972
1973     channels = is->audio_st->codec->channels;
1974
1975     size = samples_size / sizeof(short);
1976     while (size > 0) {
1977         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1978         if (len > size)
1979             len = size;
1980         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1981         samples += len;
1982         is->sample_array_index += len;
1983         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1984             is->sample_array_index = 0;
1985         size -= len;
1986     }
1987 }
1988
1989 /* return the new audio buffer size (samples can be added or deleted
1990    to get better sync if video or external master clock) */
1991 static int synchronize_audio(VideoState *is, short *samples,
1992                              int samples_size1, double pts)
1993 {
1994     int n, samples_size;
1995     double ref_clock;
1996
1997     n = 2 * is->audio_st->codec->channels;
1998     samples_size = samples_size1;
1999
2000     /* if not master, then we try to remove or add samples to correct the clock */
2001     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
2002          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
2003         double diff, avg_diff;
2004         int wanted_size, min_size, max_size, nb_samples;
2005
2006         ref_clock = get_master_clock(is);
2007         diff = get_audio_clock(is) - ref_clock;
2008
2009         if (diff < AV_NOSYNC_THRESHOLD) {
2010             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2011             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2012                 /* not enough measures to have a correct estimate */
2013                 is->audio_diff_avg_count++;
2014             } else {
2015                 /* estimate the A-V difference */
2016                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2017
2018                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2019                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
2020                     nb_samples = samples_size / n;
2021
2022                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2023                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
2024                     if (wanted_size < min_size)
2025                         wanted_size = min_size;
2026                     else if (wanted_size > max_size)
2027                         wanted_size = max_size;
2028
2029                     /* add or remove samples to correction the synchro */
2030                     if (wanted_size < samples_size) {
2031                         /* remove samples */
2032                         samples_size = wanted_size;
2033                     } else if (wanted_size > samples_size) {
2034                         uint8_t *samples_end, *q;
2035                         int nb;
2036
2037                         /* add samples */
2038                         nb = (samples_size - wanted_size);
2039                         samples_end = (uint8_t *)samples + samples_size - n;
2040                         q = samples_end + n;
2041                         while (nb > 0) {
2042                             memcpy(q, samples_end, n);
2043                             q += n;
2044                             nb -= n;
2045                         }
2046                         samples_size = wanted_size;
2047                     }
2048                 }
2049 #if 0
2050                 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
2051                        diff, avg_diff, samples_size - samples_size1,
2052                        is->audio_clock, is->video_clock, is->audio_diff_threshold);
2053 #endif
2054             }
2055         } else {
2056             /* too big difference : may be initial PTS errors, so
2057                reset A-V filter */
2058             is->audio_diff_avg_count = 0;
2059             is->audio_diff_cum = 0;
2060         }
2061     }
2062
2063     return samples_size;
2064 }
2065
2066 /* decode one audio frame and returns its uncompressed size */
2067 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2068 {
2069     AVPacket *pkt_temp = &is->audio_pkt_temp;
2070     AVPacket *pkt = &is->audio_pkt;
2071     AVCodecContext *dec= is->audio_st->codec;
2072     int n, len1, data_size;
2073     double pts;
2074
2075     for(;;) {
2076         /* NOTE: the audio packet can contain several frames */
2077         while (pkt_temp->size > 0) {
2078             data_size = sizeof(is->audio_buf1);
2079             len1 = avcodec_decode_audio3(dec,
2080                                         (int16_t *)is->audio_buf1, &data_size,
2081                                         pkt_temp);
2082             if (len1 < 0) {
2083                 /* if error, we skip the frame */
2084                 pkt_temp->size = 0;
2085                 break;
2086             }
2087
2088             pkt_temp->data += len1;
2089             pkt_temp->size -= len1;
2090             if (data_size <= 0)
2091                 continue;
2092
2093             if (dec->sample_fmt != is->audio_src_fmt) {
2094                 if (is->reformat_ctx)
2095                     av_audio_convert_free(is->reformat_ctx);
2096                 is->reformat_ctx= av_audio_convert_alloc(AV_SAMPLE_FMT_S16, 1,
2097                                                          dec->sample_fmt, 1, NULL, 0);
2098                 if (!is->reformat_ctx) {
2099                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2100                         av_get_sample_fmt_name(dec->sample_fmt),
2101                         av_get_sample_fmt_name(AV_SAMPLE_FMT_S16));
2102                         break;
2103                 }
2104                 is->audio_src_fmt= dec->sample_fmt;
2105             }
2106
2107             if (is->reformat_ctx) {
2108                 const void *ibuf[6]= {is->audio_buf1};
2109                 void *obuf[6]= {is->audio_buf2};
2110                 int istride[6]= {av_get_bits_per_sample_fmt(dec->sample_fmt)/8};
2111                 int ostride[6]= {2};
2112                 int len= data_size/istride[0];
2113                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2114                     printf("av_audio_convert() failed\n");
2115                     break;
2116                 }
2117                 is->audio_buf= is->audio_buf2;
2118                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2119                           remove this legacy cruft */
2120                 data_size= len*2;
2121             }else{
2122                 is->audio_buf= is->audio_buf1;
2123             }
2124
2125             /* if no pts, then compute it */
2126             pts = is->audio_clock;
2127             *pts_ptr = pts;
2128             n = 2 * dec->channels;
2129             is->audio_clock += (double)data_size /
2130                 (double)(n * dec->sample_rate);
2131 #if defined(DEBUG_SYNC)
2132             {
2133                 static double last_clock;
2134                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2135                        is->audio_clock - last_clock,
2136                        is->audio_clock, pts);
2137                 last_clock = is->audio_clock;
2138             }
2139 #endif
2140             return data_size;
2141         }
2142
2143         /* free the current packet */
2144         if (pkt->data)
2145             av_free_packet(pkt);
2146
2147         if (is->paused || is->audioq.abort_request) {
2148             return -1;
2149         }
2150
2151         /* read next packet */
2152         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2153             return -1;
2154         if(pkt->data == flush_pkt.data){
2155             avcodec_flush_buffers(dec);
2156             continue;
2157         }
2158
2159         pkt_temp->data = pkt->data;
2160         pkt_temp->size = pkt->size;
2161
2162         /* if update the audio clock with the pts */
2163         if (pkt->pts != AV_NOPTS_VALUE) {
2164             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2165         }
2166     }
2167 }
2168
2169 /* get the current audio output buffer size, in samples. With SDL, we
2170    cannot have a precise information */
2171 static int audio_write_get_buf_size(VideoState *is)
2172 {
2173     return is->audio_buf_size - is->audio_buf_index;
2174 }
2175
2176
2177 /* prepare a new audio buffer */
2178 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2179 {
2180     VideoState *is = opaque;
2181     int audio_size, len1;
2182     double pts;
2183
2184     audio_callback_time = av_gettime();
2185
2186     while (len > 0) {
2187         if (is->audio_buf_index >= is->audio_buf_size) {
2188            audio_size = audio_decode_frame(is, &pts);
2189            if (audio_size < 0) {
2190                 /* if error, just output silence */
2191                is->audio_buf = is->audio_buf1;
2192                is->audio_buf_size = 1024;
2193                memset(is->audio_buf, 0, is->audio_buf_size);
2194            } else {
2195                if (is->show_audio)
2196                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2197                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2198                                               pts);
2199                is->audio_buf_size = audio_size;
2200            }
2201            is->audio_buf_index = 0;
2202         }
2203         len1 = is->audio_buf_size - is->audio_buf_index;
2204         if (len1 > len)
2205             len1 = len;
2206         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2207         len -= len1;
2208         stream += len1;
2209         is->audio_buf_index += len1;
2210     }
2211 }
2212
2213 /* open a given stream. Return 0 if OK */
2214 static int stream_component_open(VideoState *is, int stream_index)
2215 {
2216     AVFormatContext *ic = is->ic;
2217     AVCodecContext *avctx;
2218     AVCodec *codec;
2219     SDL_AudioSpec wanted_spec, spec;
2220
2221     if (stream_index < 0 || stream_index >= ic->nb_streams)
2222         return -1;
2223     avctx = ic->streams[stream_index]->codec;
2224
2225     /* prepare audio output */
2226     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2227         if (avctx->channels > 0) {
2228             avctx->request_channels = FFMIN(2, avctx->channels);
2229         } else {
2230             avctx->request_channels = 2;
2231         }
2232     }
2233
2234     codec = avcodec_find_decoder(avctx->codec_id);
2235     avctx->debug_mv = debug_mv;
2236     avctx->debug = debug;
2237     avctx->workaround_bugs = workaround_bugs;
2238     avctx->lowres = lowres;
2239     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2240     avctx->idct_algo= idct;
2241     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2242     avctx->skip_frame= skip_frame;
2243     avctx->skip_idct= skip_idct;
2244     avctx->skip_loop_filter= skip_loop_filter;
2245     avctx->error_recognition= error_recognition;
2246     avctx->error_concealment= error_concealment;
2247     avcodec_thread_init(avctx, thread_count);
2248
2249     set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0, codec);
2250
2251     if (!codec ||
2252         avcodec_open(avctx, codec) < 0)
2253         return -1;
2254
2255     /* prepare audio output */
2256     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2257         wanted_spec.freq = avctx->sample_rate;
2258         wanted_spec.format = AUDIO_S16SYS;
2259         wanted_spec.channels = avctx->channels;
2260         wanted_spec.silence = 0;
2261         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2262         wanted_spec.callback = sdl_audio_callback;
2263         wanted_spec.userdata = is;
2264         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2265             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2266             return -1;
2267         }
2268         is->audio_hw_buf_size = spec.size;
2269         is->audio_src_fmt= AV_SAMPLE_FMT_S16;
2270     }
2271
2272     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2273     switch(avctx->codec_type) {
2274     case AVMEDIA_TYPE_AUDIO:
2275         is->audio_stream = stream_index;
2276         is->audio_st = ic->streams[stream_index];
2277         is->audio_buf_size = 0;
2278         is->audio_buf_index = 0;
2279
2280         /* init averaging filter */
2281         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2282         is->audio_diff_avg_count = 0;
2283         /* since we do not have a precise anough audio fifo fullness,
2284            we correct audio sync only if larger than this threshold */
2285         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2286
2287         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2288         packet_queue_init(&is->audioq);
2289         SDL_PauseAudio(0);
2290         break;
2291     case AVMEDIA_TYPE_VIDEO:
2292         is->video_stream = stream_index;
2293         is->video_st = ic->streams[stream_index];
2294
2295 //        is->video_current_pts_time = av_gettime();
2296
2297         packet_queue_init(&is->videoq);
2298         is->video_tid = SDL_CreateThread(video_thread, is);
2299         break;
2300     case AVMEDIA_TYPE_SUBTITLE:
2301         is->subtitle_stream = stream_index;
2302         is->subtitle_st = ic->streams[stream_index];
2303         packet_queue_init(&is->subtitleq);
2304
2305         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2306         break;
2307     default:
2308         break;
2309     }
2310     return 0;
2311 }
2312
2313 static void stream_component_close(VideoState *is, int stream_index)
2314 {
2315     AVFormatContext *ic = is->ic;
2316     AVCodecContext *avctx;
2317
2318     if (stream_index < 0 || stream_index >= ic->nb_streams)
2319         return;
2320     avctx = ic->streams[stream_index]->codec;
2321
2322     switch(avctx->codec_type) {
2323     case AVMEDIA_TYPE_AUDIO:
2324         packet_queue_abort(&is->audioq);
2325
2326         SDL_CloseAudio();
2327
2328         packet_queue_end(&is->audioq);
2329         if (is->reformat_ctx)
2330             av_audio_convert_free(is->reformat_ctx);
2331         is->reformat_ctx = NULL;
2332         break;
2333     case AVMEDIA_TYPE_VIDEO:
2334         packet_queue_abort(&is->videoq);
2335
2336         /* note: we also signal this mutex to make sure we deblock the
2337            video thread in all cases */
2338         SDL_LockMutex(is->pictq_mutex);
2339         SDL_CondSignal(is->pictq_cond);
2340         SDL_UnlockMutex(is->pictq_mutex);
2341
2342         SDL_WaitThread(is->video_tid, NULL);
2343
2344         packet_queue_end(&is->videoq);
2345         break;
2346     case AVMEDIA_TYPE_SUBTITLE:
2347         packet_queue_abort(&is->subtitleq);
2348
2349         /* note: we also signal this mutex to make sure we deblock the
2350            video thread in all cases */
2351         SDL_LockMutex(is->subpq_mutex);
2352         is->subtitle_stream_changed = 1;
2353
2354         SDL_CondSignal(is->subpq_cond);
2355         SDL_UnlockMutex(is->subpq_mutex);
2356
2357         SDL_WaitThread(is->subtitle_tid, NULL);
2358
2359         packet_queue_end(&is->subtitleq);
2360         break;
2361     default:
2362         break;
2363     }
2364
2365     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2366     avcodec_close(avctx);
2367     switch(avctx->codec_type) {
2368     case AVMEDIA_TYPE_AUDIO:
2369         is->audio_st = NULL;
2370         is->audio_stream = -1;
2371         break;
2372     case AVMEDIA_TYPE_VIDEO:
2373         is->video_st = NULL;
2374         is->video_stream = -1;
2375         break;
2376     case AVMEDIA_TYPE_SUBTITLE:
2377         is->subtitle_st = NULL;
2378         is->subtitle_stream = -1;
2379         break;
2380     default:
2381         break;
2382     }
2383 }
2384
2385 /* since we have only one decoding thread, we can use a global
2386    variable instead of a thread local variable */
2387 static VideoState *global_video_state;
2388
2389 static int decode_interrupt_cb(void)
2390 {
2391     return (global_video_state && global_video_state->abort_request);
2392 }
2393
2394 /* this thread gets the stream from the disk or the network */
2395 static int decode_thread(void *arg)
2396 {
2397     VideoState *is = arg;
2398     AVFormatContext *ic;
2399     int err, i, ret;
2400     int st_index[AVMEDIA_TYPE_NB];
2401     int st_count[AVMEDIA_TYPE_NB]={0};
2402     int st_best_packet_count[AVMEDIA_TYPE_NB];
2403     AVPacket pkt1, *pkt = &pkt1;
2404     AVFormatParameters params, *ap = &params;
2405     int eof=0;
2406     int pkt_in_play_range = 0;
2407
2408     ic = avformat_alloc_context();
2409
2410     memset(st_index, -1, sizeof(st_index));
2411     memset(st_best_packet_count, -1, sizeof(st_best_packet_count));
2412     is->video_stream = -1;
2413     is->audio_stream = -1;
2414     is->subtitle_stream = -1;
2415
2416     global_video_state = is;
2417     url_set_interrupt_cb(decode_interrupt_cb);
2418
2419     memset(ap, 0, sizeof(*ap));
2420
2421     ap->prealloced_context = 1;
2422     ap->width = frame_width;
2423     ap->height= frame_height;
2424     ap->time_base= (AVRational){1, 25};
2425     ap->pix_fmt = frame_pix_fmt;
2426
2427     set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM, NULL);
2428
2429     err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
2430     if (err < 0) {
2431         print_error(is->filename, err);
2432         ret = -1;
2433         goto fail;
2434     }
2435     is->ic = ic;
2436
2437     if(genpts)
2438         ic->flags |= AVFMT_FLAG_GENPTS;
2439
2440     err = av_find_stream_info(ic);
2441     if (err < 0) {
2442         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2443         ret = -1;
2444         goto fail;
2445     }
2446     if(ic->pb)
2447         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2448
2449     if(seek_by_bytes<0)
2450         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2451
2452     /* if seeking requested, we execute it */
2453     if (start_time != AV_NOPTS_VALUE) {
2454         int64_t timestamp;
2455
2456         timestamp = start_time;
2457         /* add the stream start time */
2458         if (ic->start_time != AV_NOPTS_VALUE)
2459             timestamp += ic->start_time;
2460         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2461         if (ret < 0) {
2462             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2463                     is->filename, (double)timestamp / AV_TIME_BASE);
2464         }
2465     }
2466
2467     for(i = 0; i < ic->nb_streams; i++) {
2468         AVStream *st= ic->streams[i];
2469         AVCodecContext *avctx = st->codec;
2470         ic->streams[i]->discard = AVDISCARD_ALL;
2471         if(avctx->codec_type >= (unsigned)AVMEDIA_TYPE_NB)
2472             continue;
2473         if(st_count[avctx->codec_type]++ != wanted_stream[avctx->codec_type] && wanted_stream[avctx->codec_type] >= 0)
2474             continue;
2475
2476         if(st_best_packet_count[avctx->codec_type] >= st->codec_info_nb_frames)
2477             continue;
2478         st_best_packet_count[avctx->codec_type]= st->codec_info_nb_frames;
2479
2480         switch(avctx->codec_type) {
2481         case AVMEDIA_TYPE_AUDIO:
2482             if (!audio_disable)
2483                 st_index[AVMEDIA_TYPE_AUDIO] = i;
2484             break;
2485         case AVMEDIA_TYPE_VIDEO:
2486         case AVMEDIA_TYPE_SUBTITLE:
2487             if (!video_disable)
2488                 st_index[avctx->codec_type] = i;
2489             break;
2490         default:
2491             break;
2492         }
2493     }
2494     if (show_status) {
2495         dump_format(ic, 0, is->filename, 0);
2496     }
2497
2498     /* open the streams */
2499     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2500         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2501     }
2502
2503     ret=-1;
2504     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2505         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2506     }
2507     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2508     if(ret<0) {
2509         if (!display_disable)
2510             is->show_audio = 2;
2511     }
2512
2513     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2514         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2515     }
2516
2517     if (is->video_stream < 0 && is->audio_stream < 0) {
2518         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2519         ret = -1;
2520         goto fail;
2521     }
2522
2523     for(;;) {
2524         if (is->abort_request)
2525             break;
2526         if (is->paused != is->last_paused) {
2527             is->last_paused = is->paused;
2528             if (is->paused)
2529                 is->read_pause_return= av_read_pause(ic);
2530             else
2531                 av_read_play(ic);
2532         }
2533 #if CONFIG_RTSP_DEMUXER
2534         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2535             /* wait 10 ms to avoid trying to get another packet */
2536             /* XXX: horrible */
2537             SDL_Delay(10);
2538             continue;
2539         }
2540 #endif
2541         if (is->seek_req) {
2542             int64_t seek_target= is->seek_pos;
2543             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2544             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2545 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2546 //      of the seek_pos/seek_rel variables
2547
2548             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2549             if (ret < 0) {
2550                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2551             }else{
2552                 if (is->audio_stream >= 0) {
2553                     packet_queue_flush(&is->audioq);
2554                     packet_queue_put(&is->audioq, &flush_pkt);
2555                 }
2556                 if (is->subtitle_stream >= 0) {
2557                     packet_queue_flush(&is->subtitleq);
2558                     packet_queue_put(&is->subtitleq, &flush_pkt);
2559                 }
2560                 if (is->video_stream >= 0) {
2561                     packet_queue_flush(&is->videoq);
2562                     packet_queue_put(&is->videoq, &flush_pkt);
2563                 }
2564             }
2565             is->seek_req = 0;
2566             eof= 0;
2567         }
2568
2569         /* if the queue are full, no need to read more */
2570         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2571             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2572                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2573                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2574             /* wait 10 ms */
2575             SDL_Delay(10);
2576             continue;
2577         }
2578         if(eof) {
2579             if(is->video_stream >= 0){
2580                 av_init_packet(pkt);
2581                 pkt->data=NULL;
2582                 pkt->size=0;
2583                 pkt->stream_index= is->video_stream;
2584                 packet_queue_put(&is->videoq, pkt);
2585             }
2586             SDL_Delay(10);
2587             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2588                 if(loop!=1 && (!loop || --loop)){
2589                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2590                 }else if(autoexit){
2591                     ret=AVERROR_EOF;
2592                     goto fail;
2593                 }
2594             }
2595             continue;
2596         }
2597         ret = av_read_frame(ic, pkt);
2598         if (ret < 0) {
2599             if (ret == AVERROR_EOF || url_feof(ic->pb))
2600                 eof=1;
2601             if (url_ferror(ic->pb))
2602                 break;
2603             SDL_Delay(100); /* wait for user event */
2604             continue;
2605         }
2606         /* check if packet is in play range specified by user, then queue, otherwise discard */
2607         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2608                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2609                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2610                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2611                 <= ((double)duration/1000000);
2612         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2613             packet_queue_put(&is->audioq, pkt);
2614         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2615             packet_queue_put(&is->videoq, pkt);
2616         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2617             packet_queue_put(&is->subtitleq, pkt);
2618         } else {
2619             av_free_packet(pkt);
2620         }
2621     }
2622     /* wait until the end */
2623     while (!is->abort_request) {
2624         SDL_Delay(100);
2625     }
2626
2627     ret = 0;
2628  fail:
2629     /* disable interrupting */
2630     global_video_state = NULL;
2631
2632     /* close each stream */
2633     if (is->audio_stream >= 0)
2634         stream_component_close(is, is->audio_stream);
2635     if (is->video_stream >= 0)
2636         stream_component_close(is, is->video_stream);
2637     if (is->subtitle_stream >= 0)
2638         stream_component_close(is, is->subtitle_stream);
2639     if (is->ic) {
2640         av_close_input_file(is->ic);
2641         is->ic = NULL; /* safety */
2642     }
2643     url_set_interrupt_cb(NULL);
2644
2645     if (ret != 0) {
2646         SDL_Event event;
2647
2648         event.type = FF_QUIT_EVENT;
2649         event.user.data1 = is;
2650         SDL_PushEvent(&event);
2651     }
2652     return 0;
2653 }
2654
2655 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2656 {
2657     VideoState *is;
2658
2659     is = av_mallocz(sizeof(VideoState));
2660     if (!is)
2661         return NULL;
2662     av_strlcpy(is->filename, filename, sizeof(is->filename));
2663     is->iformat = iformat;
2664     is->ytop = 0;
2665     is->xleft = 0;
2666
2667     /* start video display */
2668     is->pictq_mutex = SDL_CreateMutex();
2669     is->pictq_cond = SDL_CreateCond();
2670
2671     is->subpq_mutex = SDL_CreateMutex();
2672     is->subpq_cond = SDL_CreateCond();
2673
2674     is->av_sync_type = av_sync_type;
2675     is->parse_tid = SDL_CreateThread(decode_thread, is);
2676     if (!is->parse_tid) {
2677         av_free(is);
2678         return NULL;
2679     }
2680     return is;
2681 }
2682
2683 static void stream_cycle_channel(VideoState *is, int codec_type)
2684 {
2685     AVFormatContext *ic = is->ic;
2686     int start_index, stream_index;
2687     AVStream *st;
2688
2689     if (codec_type == AVMEDIA_TYPE_VIDEO)
2690         start_index = is->video_stream;
2691     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2692         start_index = is->audio_stream;
2693     else
2694         start_index = is->subtitle_stream;
2695     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2696         return;
2697     stream_index = start_index;
2698     for(;;) {
2699         if (++stream_index >= is->ic->nb_streams)
2700         {
2701             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2702             {
2703                 stream_index = -1;
2704                 goto the_end;
2705             } else
2706                 stream_index = 0;
2707         }
2708         if (stream_index == start_index)
2709             return;
2710         st = ic->streams[stream_index];
2711         if (st->codec->codec_type == codec_type) {
2712             /* check that parameters are OK */
2713             switch(codec_type) {
2714             case AVMEDIA_TYPE_AUDIO:
2715                 if (st->codec->sample_rate != 0 &&
2716                     st->codec->channels != 0)
2717                     goto the_end;
2718                 break;
2719             case AVMEDIA_TYPE_VIDEO:
2720             case AVMEDIA_TYPE_SUBTITLE:
2721                 goto the_end;
2722             default:
2723                 break;
2724             }
2725         }
2726     }
2727  the_end:
2728     stream_component_close(is, start_index);
2729     stream_component_open(is, stream_index);
2730 }
2731
2732
2733 static void toggle_full_screen(void)
2734 {
2735     is_full_screen = !is_full_screen;
2736     if (!fs_screen_width) {
2737         /* use default SDL method */
2738 //        SDL_WM_ToggleFullScreen(screen);
2739     }
2740     video_open(cur_stream);
2741 }
2742
2743 static void toggle_pause(void)
2744 {
2745     if (cur_stream)
2746         stream_pause(cur_stream);
2747     step = 0;
2748 }
2749
2750 static void step_to_next_frame(void)
2751 {
2752     if (cur_stream) {
2753         /* if the stream is paused unpause it, then step */
2754         if (cur_stream->paused)
2755             stream_pause(cur_stream);
2756     }
2757     step = 1;
2758 }
2759
2760 static void toggle_audio_display(void)
2761 {
2762     if (cur_stream) {
2763         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2764         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2765         fill_rectangle(screen,
2766                     cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2767                     bgcolor);
2768         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2769     }
2770 }
2771
2772 /* handle an event sent by the GUI */
2773 static void event_loop(void)
2774 {
2775     SDL_Event event;
2776     double incr, pos, frac;
2777
2778     for(;;) {
2779         double x;
2780         SDL_WaitEvent(&event);
2781         switch(event.type) {
2782         case SDL_KEYDOWN:
2783             if (exit_on_keydown) {
2784                 do_exit();
2785                 break;
2786             }
2787             switch(event.key.keysym.sym) {
2788             case SDLK_ESCAPE:
2789             case SDLK_q:
2790                 do_exit();
2791                 break;
2792             case SDLK_f:
2793                 toggle_full_screen();
2794                 break;
2795             case SDLK_p:
2796             case SDLK_SPACE:
2797                 toggle_pause();
2798                 break;
2799             case SDLK_s: //S: Step to next frame
2800                 step_to_next_frame();
2801                 break;
2802             case SDLK_a:
2803                 if (cur_stream)
2804                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2805                 break;
2806             case SDLK_v:
2807                 if (cur_stream)
2808                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2809                 break;
2810             case SDLK_t:
2811                 if (cur_stream)
2812                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2813                 break;
2814             case SDLK_w:
2815                 toggle_audio_display();
2816                 break;
2817             case SDLK_LEFT:
2818                 incr = -10.0;
2819                 goto do_seek;
2820             case SDLK_RIGHT:
2821                 incr = 10.0;
2822                 goto do_seek;
2823             case SDLK_UP:
2824                 incr = 60.0;
2825                 goto do_seek;
2826             case SDLK_DOWN:
2827                 incr = -60.0;
2828             do_seek:
2829                 if (cur_stream) {
2830                     if (seek_by_bytes) {
2831                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2832                             pos= cur_stream->video_current_pos;
2833                         }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2834                             pos= cur_stream->audio_pkt.pos;
2835                         }else
2836                             pos = url_ftell(cur_stream->ic->pb);
2837                         if (cur_stream->ic->bit_rate)
2838                             incr *= cur_stream->ic->bit_rate / 8.0;
2839                         else
2840                             incr *= 180000.0;
2841                         pos += incr;
2842                         stream_seek(cur_stream, pos, incr, 1);
2843                     } else {
2844                         pos = get_master_clock(cur_stream);
2845                         pos += incr;
2846                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2847                     }
2848                 }
2849                 break;
2850             default:
2851                 break;
2852             }
2853             break;
2854         case SDL_MOUSEBUTTONDOWN:
2855             if (exit_on_mousedown) {
2856                 do_exit();
2857                 break;
2858             }
2859         case SDL_MOUSEMOTION:
2860             if(event.type ==SDL_MOUSEBUTTONDOWN){
2861                 x= event.button.x;
2862             }else{
2863                 if(event.motion.state != SDL_PRESSED)
2864                     break;
2865                 x= event.motion.x;
2866             }
2867             if (cur_stream) {
2868                 if(seek_by_bytes || cur_stream->ic->duration<=0){
2869                     uint64_t size=  url_fsize(cur_stream->ic->pb);
2870                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2871                 }else{
2872                     int64_t ts;
2873                     int ns, hh, mm, ss;
2874                     int tns, thh, tmm, tss;
2875                     tns = cur_stream->ic->duration/1000000LL;
2876                     thh = tns/3600;
2877                     tmm = (tns%3600)/60;
2878                     tss = (tns%60);
2879                     frac = x/cur_stream->width;
2880                     ns = frac*tns;
2881                     hh = ns/3600;
2882                     mm = (ns%3600)/60;
2883                     ss = (ns%60);
2884                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2885                             hh, mm, ss, thh, tmm, tss);
2886                     ts = frac*cur_stream->ic->duration;
2887                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2888                         ts += cur_stream->ic->start_time;
2889                     stream_seek(cur_stream, ts, 0, 0);
2890                 }
2891             }
2892             break;
2893         case SDL_VIDEORESIZE:
2894             if (cur_stream) {
2895                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2896                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2897                 screen_width = cur_stream->width = event.resize.w;
2898                 screen_height= cur_stream->height= event.resize.h;
2899             }
2900             break;
2901         case SDL_QUIT:
2902         case FF_QUIT_EVENT:
2903             do_exit();
2904             break;
2905         case FF_ALLOC_EVENT:
2906             video_open(event.user.data1);
2907             alloc_picture(event.user.data1);
2908             break;
2909         case FF_REFRESH_EVENT:
2910             video_refresh_timer(event.user.data1);
2911             cur_stream->refresh=0;
2912             break;
2913         default:
2914             break;
2915         }
2916     }
2917 }
2918
2919 static void opt_frame_size(const char *arg)
2920 {
2921     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
2922         fprintf(stderr, "Incorrect frame size\n");
2923         exit(1);
2924     }
2925     if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2926         fprintf(stderr, "Frame size must be a multiple of 2\n");
2927         exit(1);
2928     }
2929 }
2930
2931 static int opt_width(const char *opt, const char *arg)
2932 {
2933     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2934     return 0;
2935 }
2936
2937 static int opt_height(const char *opt, const char *arg)
2938 {
2939     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2940     return 0;
2941 }
2942
2943 static void opt_format(const char *arg)
2944 {
2945     file_iformat = av_find_input_format(arg);
2946     if (!file_iformat) {
2947         fprintf(stderr, "Unknown input format: %s\n", arg);
2948         exit(1);
2949     }
2950 }
2951
2952 static void opt_frame_pix_fmt(const char *arg)
2953 {
2954     frame_pix_fmt = av_get_pix_fmt(arg);
2955 }
2956
2957 static int opt_sync(const char *opt, const char *arg)
2958 {
2959     if (!strcmp(arg, "audio"))
2960         av_sync_type = AV_SYNC_AUDIO_MASTER;
2961     else if (!strcmp(arg, "video"))
2962         av_sync_type = AV_SYNC_VIDEO_MASTER;
2963     else if (!strcmp(arg, "ext"))
2964         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2965     else {
2966         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2967         exit(1);
2968     }
2969     return 0;
2970 }
2971
2972 static int opt_seek(const char *opt, const char *arg)
2973 {
2974     start_time = parse_time_or_die(opt, arg, 1);
2975     return 0;
2976 }
2977
2978 static int opt_duration(const char *opt, const char *arg)
2979 {
2980     duration = parse_time_or_die(opt, arg, 1);
2981     return 0;
2982 }
2983
2984 static int opt_debug(const char *opt, const char *arg)
2985 {
2986     av_log_set_level(99);
2987     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2988     return 0;
2989 }
2990
2991 static int opt_vismv(const char *opt, const char *arg)
2992 {
2993     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2994     return 0;
2995 }
2996
2997 static int opt_thread_count(const char *opt, const char *arg)
2998 {
2999     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
3000 #if !HAVE_THREADS
3001     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
3002 #endif
3003     return 0;
3004 }
3005
3006 static const OptionDef options[] = {
3007 #include "cmdutils_common_opts.h"
3008     { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
3009     { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
3010     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
3011     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
3012     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
3013     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
3014     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
3015     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
3016     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
3017     { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
3018     { "t", HAS_ARG | OPT_FUNC2, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
3019     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
3020     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
3021     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
3022     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
3023     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
3024     { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
3025     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
3026     { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
3027     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
3028     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
3029     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3030     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
3031     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
3032     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
3033     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
3034     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
3035     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
3036     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
3037     { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
3038     { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
3039     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
3040     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_keydown}, "exit on key down", "" },
3041     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_mousedown}, "exit on mouse down", "" },
3042     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
3043     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
3044     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
3045 #if CONFIG_AVFILTER
3046     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
3047 #endif
3048     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
3049     { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
3050     { NULL, },
3051 };
3052
3053 static void show_usage(void)
3054 {
3055     printf("Simple media player\n");
3056     printf("usage: ffplay [options] input_file\n");
3057     printf("\n");
3058 }
3059
3060 static void show_help(void)
3061 {
3062     av_log_set_callback(log_callback_help);
3063     show_usage();
3064     show_help_options(options, "Main options:\n",
3065                       OPT_EXPERT, 0);
3066     show_help_options(options, "\nAdvanced options:\n",
3067                       OPT_EXPERT, OPT_EXPERT);
3068     printf("\n");
3069     av_opt_show2(avcodec_opts[0], NULL,
3070                  AV_OPT_FLAG_DECODING_PARAM, 0);
3071     printf("\n");
3072     av_opt_show2(avformat_opts, NULL,
3073                  AV_OPT_FLAG_DECODING_PARAM, 0);
3074 #if !CONFIG_AVFILTER
3075     printf("\n");
3076     av_opt_show2(sws_opts, NULL,
3077                  AV_OPT_FLAG_ENCODING_PARAM, 0);
3078 #endif
3079     printf("\nWhile playing:\n"
3080            "q, ESC              quit\n"
3081            "f                   toggle full screen\n"
3082            "p, SPC              pause\n"
3083            "a                   cycle audio channel\n"
3084            "v                   cycle video channel\n"
3085            "t                   cycle subtitle channel\n"
3086            "w                   show audio waves\n"
3087            "s                   activate frame-step mode\n"
3088            "left/right          seek backward/forward 10 seconds\n"
3089            "down/up             seek backward/forward 1 minute\n"
3090            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3091            );
3092 }
3093
3094 static void opt_input_file(const char *filename)
3095 {
3096     if (input_filename) {
3097         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3098                 filename, input_filename);
3099         exit(1);
3100     }
3101     if (!strcmp(filename, "-"))
3102         filename = "pipe:";
3103     input_filename = filename;
3104 }
3105
3106 /* Called from the main */
3107 int main(int argc, char **argv)
3108 {
3109     int flags;
3110
3111     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3112
3113     /* register all codecs, demux and protocols */
3114     avcodec_register_all();
3115 #if CONFIG_AVDEVICE
3116     avdevice_register_all();
3117 #endif
3118 #if CONFIG_AVFILTER
3119     avfilter_register_all();
3120 #endif
3121     av_register_all();
3122
3123     init_opts();
3124
3125     show_banner();
3126
3127     parse_options(argc, argv, options, opt_input_file);
3128
3129     if (!input_filename) {
3130         show_usage();
3131         fprintf(stderr, "An input file must be specified\n");
3132         fprintf(stderr, "Use -h to get full help or, even better, run 'man ffplay'\n");
3133         exit(1);
3134     }
3135
3136     if (display_disable) {
3137         video_disable = 1;
3138     }
3139     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3140 #if !defined(__MINGW32__) && !defined(__APPLE__)
3141     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3142 #endif
3143     if (SDL_Init (flags)) {
3144         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3145         exit(1);
3146     }
3147
3148     if (!display_disable) {
3149 #if HAVE_SDL_VIDEO_SIZE
3150         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3151         fs_screen_width = vi->current_w;
3152         fs_screen_height = vi->current_h;
3153 #endif
3154     }
3155
3156     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3157     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3158     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3159
3160     av_init_packet(&flush_pkt);
3161     flush_pkt.data= "FLUSH";
3162
3163     cur_stream = stream_open(input_filename, file_iformat);
3164
3165     event_loop();
3166
3167     /* never returns */
3168
3169     return 0;
3170 }