avformat/oggparsecelt/celt_header: fix memleak
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include "libavutil/avstring.h"
32 #include "libavutil/colorspace.h"
33 #include "libavutil/mathematics.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/imgutils.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/avassert.h"
40 #include "libavutil/time.h"
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libavutil/opt.h"
45 #include "libavcodec/avfft.h"
46 #include "libswresample/swresample.h"
47
48 #if CONFIG_AVFILTER
49 # include "libavfilter/avcodec.h"
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/buffersink.h"
52 # include "libavfilter/buffersrc.h"
53 #endif
54
55 #include <SDL.h>
56 #include <SDL_thread.h>
57
58 #include "cmdutils.h"
59
60 #include <assert.h>
61
62 const char program_name[] = "ffplay";
63 const int program_birth_year = 2003;
64
65 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
66 #define MIN_FRAMES 5
67
68 /* SDL audio buffer size, in samples. Should be small to have precise
69    A/V sync as SDL does not have hardware buffer fullness info. */
70 #define SDL_AUDIO_BUFFER_SIZE 1024
71
72 /* no AV sync correction is done if below the minimum AV sync threshold */
73 #define AV_SYNC_THRESHOLD_MIN 0.01
74 /* AV sync correction is done if above the maximum AV sync threshold */
75 #define AV_SYNC_THRESHOLD_MAX 0.1
76 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
77 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
78 /* no AV correction is done if too big error */
79 #define AV_NOSYNC_THRESHOLD 10.0
80
81 /* maximum audio speed change to get correct sync */
82 #define SAMPLE_CORRECTION_PERCENT_MAX 10
83
84 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
85 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
86 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
87 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
88
89 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
90 #define AUDIO_DIFF_AVG_NB   20
91
92 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
93 #define REFRESH_RATE 0.01
94
95 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
96 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
97 #define SAMPLE_ARRAY_SIZE (8 * 65536)
98
99 #define CURSOR_HIDE_DELAY 1000000
100
101 static int64_t sws_flags = SWS_BICUBIC;
102
103 typedef struct MyAVPacketList {
104     AVPacket pkt;
105     struct MyAVPacketList *next;
106     int serial;
107 } MyAVPacketList;
108
109 typedef struct PacketQueue {
110     MyAVPacketList *first_pkt, *last_pkt;
111     int nb_packets;
112     int size;
113     int abort_request;
114     int serial;
115     SDL_mutex *mutex;
116     SDL_cond *cond;
117 } PacketQueue;
118
119 #define VIDEO_PICTURE_QUEUE_SIZE 3
120 #define SUBPICTURE_QUEUE_SIZE 4
121
122 typedef struct VideoPicture {
123     double pts;             // presentation timestamp for this picture
124     int64_t pos;            // byte position in file
125     SDL_Overlay *bmp;
126     int width, height; /* source height & width */
127     int allocated;
128     int reallocate;
129     int serial;
130
131     AVRational sar;
132 } VideoPicture;
133
134 typedef struct SubPicture {
135     double pts; /* presentation time stamp for this picture */
136     AVSubtitle sub;
137     int serial;
138 } SubPicture;
139
140 typedef struct AudioParams {
141     int freq;
142     int channels;
143     int64_t channel_layout;
144     enum AVSampleFormat fmt;
145 } AudioParams;
146
147 typedef struct Clock {
148     double pts;           /* clock base */
149     double pts_drift;     /* clock base minus time at which we updated the clock */
150     double last_updated;
151     double speed;
152     int serial;           /* clock is based on a packet with this serial */
153     int paused;
154     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
155 } Clock;
156
157 enum {
158     AV_SYNC_AUDIO_MASTER, /* default choice */
159     AV_SYNC_VIDEO_MASTER,
160     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
161 };
162
163 typedef struct VideoState {
164     SDL_Thread *read_tid;
165     SDL_Thread *video_tid;
166     AVInputFormat *iformat;
167     int no_background;
168     int abort_request;
169     int force_refresh;
170     int paused;
171     int last_paused;
172     int queue_attachments_req;
173     int seek_req;
174     int seek_flags;
175     int64_t seek_pos;
176     int64_t seek_rel;
177     int read_pause_return;
178     AVFormatContext *ic;
179     int realtime;
180     int audio_finished;
181     int video_finished;
182
183     Clock audclk;
184     Clock vidclk;
185     Clock extclk;
186
187     int audio_stream;
188
189     int av_sync_type;
190
191     double audio_clock;
192     int audio_clock_serial;
193     double audio_diff_cum; /* used for AV difference average computation */
194     double audio_diff_avg_coef;
195     double audio_diff_threshold;
196     int audio_diff_avg_count;
197     AVStream *audio_st;
198     PacketQueue audioq;
199     int audio_hw_buf_size;
200     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
201     uint8_t *audio_buf;
202     uint8_t *audio_buf1;
203     unsigned int audio_buf_size; /* in bytes */
204     unsigned int audio_buf1_size;
205     int audio_buf_index; /* in bytes */
206     int audio_write_buf_size;
207     int audio_buf_frames_pending;
208     AVPacket audio_pkt_temp;
209     AVPacket audio_pkt;
210     int audio_pkt_temp_serial;
211     int audio_last_serial;
212     struct AudioParams audio_src;
213 #if CONFIG_AVFILTER
214     struct AudioParams audio_filter_src;
215 #endif
216     struct AudioParams audio_tgt;
217     struct SwrContext *swr_ctx;
218     int frame_drops_early;
219     int frame_drops_late;
220     AVFrame *frame;
221     int64_t audio_frame_next_pts;
222
223     enum ShowMode {
224         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
225     } show_mode;
226     int16_t sample_array[SAMPLE_ARRAY_SIZE];
227     int sample_array_index;
228     int last_i_start;
229     RDFTContext *rdft;
230     int rdft_bits;
231     FFTSample *rdft_data;
232     int xpos;
233     double last_vis_time;
234
235     SDL_Thread *subtitle_tid;
236     int subtitle_stream;
237     AVStream *subtitle_st;
238     PacketQueue subtitleq;
239     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
240     int subpq_size, subpq_rindex, subpq_windex;
241     SDL_mutex *subpq_mutex;
242     SDL_cond *subpq_cond;
243
244     double frame_timer;
245     double frame_last_pts;
246     double frame_last_duration;
247     double frame_last_dropped_pts;
248     double frame_last_returned_time;
249     double frame_last_filter_delay;
250     int64_t frame_last_dropped_pos;
251     int frame_last_dropped_serial;
252     int video_stream;
253     AVStream *video_st;
254     PacketQueue videoq;
255     int64_t video_current_pos;      // current displayed file pos
256     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
257     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
258     int pictq_size, pictq_rindex, pictq_windex;
259     SDL_mutex *pictq_mutex;
260     SDL_cond *pictq_cond;
261 #if !CONFIG_AVFILTER
262     struct SwsContext *img_convert_ctx;
263 #endif
264     SDL_Rect last_display_rect;
265
266     char filename[1024];
267     int width, height, xleft, ytop;
268     int step;
269
270 #if CONFIG_AVFILTER
271     AVFilterContext *in_video_filter;   // the first filter in the video chain
272     AVFilterContext *out_video_filter;  // the last filter in the video chain
273     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
274     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
275     AVFilterGraph *agraph;              // audio filter graph
276 #endif
277
278     int last_video_stream, last_audio_stream, last_subtitle_stream;
279
280     SDL_cond *continue_read_thread;
281 } VideoState;
282
283 /* options specified by the user */
284 static AVInputFormat *file_iformat;
285 static const char *input_filename;
286 static const char *window_title;
287 static int fs_screen_width;
288 static int fs_screen_height;
289 static int default_width  = 640;
290 static int default_height = 480;
291 static int screen_width  = 0;
292 static int screen_height = 0;
293 static int audio_disable;
294 static int video_disable;
295 static int subtitle_disable;
296 static int wanted_stream[AVMEDIA_TYPE_NB] = {
297     [AVMEDIA_TYPE_AUDIO]    = -1,
298     [AVMEDIA_TYPE_VIDEO]    = -1,
299     [AVMEDIA_TYPE_SUBTITLE] = -1,
300 };
301 static int seek_by_bytes = -1;
302 static int display_disable;
303 static int show_status = 1;
304 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
305 static int64_t start_time = AV_NOPTS_VALUE;
306 static int64_t duration = AV_NOPTS_VALUE;
307 static int workaround_bugs = 1;
308 static int fast = 0;
309 static int genpts = 0;
310 static int lowres = 0;
311 static int error_concealment = 3;
312 static int decoder_reorder_pts = -1;
313 static int autoexit;
314 static int exit_on_keydown;
315 static int exit_on_mousedown;
316 static int loop = 1;
317 static int framedrop = -1;
318 static int infinite_buffer = -1;
319 static enum ShowMode show_mode = SHOW_MODE_NONE;
320 static const char *audio_codec_name;
321 static const char *subtitle_codec_name;
322 static const char *video_codec_name;
323 double rdftspeed = 0.02;
324 static int64_t cursor_last_shown;
325 static int cursor_hidden = 0;
326 #if CONFIG_AVFILTER
327 static char *vfilters = NULL;
328 static char *afilters = NULL;
329 #endif
330
331 /* current context */
332 static int is_full_screen;
333 static int64_t audio_callback_time;
334
335 static AVPacket flush_pkt;
336
337 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
338 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
339
340 static SDL_Surface *screen;
341
342 static inline
343 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
344                    enum AVSampleFormat fmt2, int64_t channel_count2)
345 {
346     /* If channel count == 1, planar and non-planar formats are the same */
347     if (channel_count1 == 1 && channel_count2 == 1)
348         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
349     else
350         return channel_count1 != channel_count2 || fmt1 != fmt2;
351 }
352
353 static inline
354 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
355 {
356     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
357         return channel_layout;
358     else
359         return 0;
360 }
361
362 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
363
364 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
365 {
366     MyAVPacketList *pkt1;
367
368     if (q->abort_request)
369        return -1;
370
371     pkt1 = av_malloc(sizeof(MyAVPacketList));
372     if (!pkt1)
373         return -1;
374     pkt1->pkt = *pkt;
375     pkt1->next = NULL;
376     if (pkt == &flush_pkt)
377         q->serial++;
378     pkt1->serial = q->serial;
379
380     if (!q->last_pkt)
381         q->first_pkt = pkt1;
382     else
383         q->last_pkt->next = pkt1;
384     q->last_pkt = pkt1;
385     q->nb_packets++;
386     q->size += pkt1->pkt.size + sizeof(*pkt1);
387     /* XXX: should duplicate packet data in DV case */
388     SDL_CondSignal(q->cond);
389     return 0;
390 }
391
392 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
393 {
394     int ret;
395
396     /* duplicate the packet */
397     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
398         return -1;
399
400     SDL_LockMutex(q->mutex);
401     ret = packet_queue_put_private(q, pkt);
402     SDL_UnlockMutex(q->mutex);
403
404     if (pkt != &flush_pkt && ret < 0)
405         av_free_packet(pkt);
406
407     return ret;
408 }
409
410 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
411 {
412     AVPacket pkt1, *pkt = &pkt1;
413     av_init_packet(pkt);
414     pkt->data = NULL;
415     pkt->size = 0;
416     pkt->stream_index = stream_index;
417     return packet_queue_put(q, pkt);
418 }
419
420 /* packet queue handling */
421 static void packet_queue_init(PacketQueue *q)
422 {
423     memset(q, 0, sizeof(PacketQueue));
424     q->mutex = SDL_CreateMutex();
425     q->cond = SDL_CreateCond();
426     q->abort_request = 1;
427 }
428
429 static void packet_queue_flush(PacketQueue *q)
430 {
431     MyAVPacketList *pkt, *pkt1;
432
433     SDL_LockMutex(q->mutex);
434     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
435         pkt1 = pkt->next;
436         av_free_packet(&pkt->pkt);
437         av_freep(&pkt);
438     }
439     q->last_pkt = NULL;
440     q->first_pkt = NULL;
441     q->nb_packets = 0;
442     q->size = 0;
443     SDL_UnlockMutex(q->mutex);
444 }
445
446 static void packet_queue_destroy(PacketQueue *q)
447 {
448     packet_queue_flush(q);
449     SDL_DestroyMutex(q->mutex);
450     SDL_DestroyCond(q->cond);
451 }
452
453 static void packet_queue_abort(PacketQueue *q)
454 {
455     SDL_LockMutex(q->mutex);
456
457     q->abort_request = 1;
458
459     SDL_CondSignal(q->cond);
460
461     SDL_UnlockMutex(q->mutex);
462 }
463
464 static void packet_queue_start(PacketQueue *q)
465 {
466     SDL_LockMutex(q->mutex);
467     q->abort_request = 0;
468     packet_queue_put_private(q, &flush_pkt);
469     SDL_UnlockMutex(q->mutex);
470 }
471
472 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
473 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
474 {
475     MyAVPacketList *pkt1;
476     int ret;
477
478     SDL_LockMutex(q->mutex);
479
480     for (;;) {
481         if (q->abort_request) {
482             ret = -1;
483             break;
484         }
485
486         pkt1 = q->first_pkt;
487         if (pkt1) {
488             q->first_pkt = pkt1->next;
489             if (!q->first_pkt)
490                 q->last_pkt = NULL;
491             q->nb_packets--;
492             q->size -= pkt1->pkt.size + sizeof(*pkt1);
493             *pkt = pkt1->pkt;
494             if (serial)
495                 *serial = pkt1->serial;
496             av_free(pkt1);
497             ret = 1;
498             break;
499         } else if (!block) {
500             ret = 0;
501             break;
502         } else {
503             SDL_CondWait(q->cond, q->mutex);
504         }
505     }
506     SDL_UnlockMutex(q->mutex);
507     return ret;
508 }
509
510 static inline void fill_rectangle(SDL_Surface *screen,
511                                   int x, int y, int w, int h, int color, int update)
512 {
513     SDL_Rect rect;
514     rect.x = x;
515     rect.y = y;
516     rect.w = w;
517     rect.h = h;
518     SDL_FillRect(screen, &rect, color);
519     if (update && w > 0 && h > 0)
520         SDL_UpdateRect(screen, x, y, w, h);
521 }
522
523 /* draw only the border of a rectangle */
524 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
525 {
526     int w1, w2, h1, h2;
527
528     /* fill the background */
529     w1 = x;
530     if (w1 < 0)
531         w1 = 0;
532     w2 = width - (x + w);
533     if (w2 < 0)
534         w2 = 0;
535     h1 = y;
536     if (h1 < 0)
537         h1 = 0;
538     h2 = height - (y + h);
539     if (h2 < 0)
540         h2 = 0;
541     fill_rectangle(screen,
542                    xleft, ytop,
543                    w1, height,
544                    color, update);
545     fill_rectangle(screen,
546                    xleft + width - w2, ytop,
547                    w2, height,
548                    color, update);
549     fill_rectangle(screen,
550                    xleft + w1, ytop,
551                    width - w1 - w2, h1,
552                    color, update);
553     fill_rectangle(screen,
554                    xleft + w1, ytop + height - h2,
555                    width - w1 - w2, h2,
556                    color, update);
557 }
558
559 #define ALPHA_BLEND(a, oldp, newp, s)\
560 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
561
562 #define RGBA_IN(r, g, b, a, s)\
563 {\
564     unsigned int v = ((const uint32_t *)(s))[0];\
565     a = (v >> 24) & 0xff;\
566     r = (v >> 16) & 0xff;\
567     g = (v >> 8) & 0xff;\
568     b = v & 0xff;\
569 }
570
571 #define YUVA_IN(y, u, v, a, s, pal)\
572 {\
573     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
574     a = (val >> 24) & 0xff;\
575     y = (val >> 16) & 0xff;\
576     u = (val >> 8) & 0xff;\
577     v = val & 0xff;\
578 }
579
580 #define YUVA_OUT(d, y, u, v, a)\
581 {\
582     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
583 }
584
585
586 #define BPP 1
587
588 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
589 {
590     int wrap, wrap3, width2, skip2;
591     int y, u, v, a, u1, v1, a1, w, h;
592     uint8_t *lum, *cb, *cr;
593     const uint8_t *p;
594     const uint32_t *pal;
595     int dstx, dsty, dstw, dsth;
596
597     dstw = av_clip(rect->w, 0, imgw);
598     dsth = av_clip(rect->h, 0, imgh);
599     dstx = av_clip(rect->x, 0, imgw - dstw);
600     dsty = av_clip(rect->y, 0, imgh - dsth);
601     lum = dst->data[0] + dsty * dst->linesize[0];
602     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
603     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
604
605     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
606     skip2 = dstx >> 1;
607     wrap = dst->linesize[0];
608     wrap3 = rect->pict.linesize[0];
609     p = rect->pict.data[0];
610     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
611
612     if (dsty & 1) {
613         lum += dstx;
614         cb += skip2;
615         cr += skip2;
616
617         if (dstx & 1) {
618             YUVA_IN(y, u, v, a, p, pal);
619             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
620             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
621             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
622             cb++;
623             cr++;
624             lum++;
625             p += BPP;
626         }
627         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
628             YUVA_IN(y, u, v, a, p, pal);
629             u1 = u;
630             v1 = v;
631             a1 = a;
632             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
633
634             YUVA_IN(y, u, v, a, p + BPP, pal);
635             u1 += u;
636             v1 += v;
637             a1 += a;
638             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
639             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
640             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
641             cb++;
642             cr++;
643             p += 2 * BPP;
644             lum += 2;
645         }
646         if (w) {
647             YUVA_IN(y, u, v, a, p, pal);
648             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
649             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
650             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
651             p++;
652             lum++;
653         }
654         p += wrap3 - dstw * BPP;
655         lum += wrap - dstw - dstx;
656         cb += dst->linesize[1] - width2 - skip2;
657         cr += dst->linesize[2] - width2 - skip2;
658     }
659     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
660         lum += dstx;
661         cb += skip2;
662         cr += skip2;
663
664         if (dstx & 1) {
665             YUVA_IN(y, u, v, a, p, pal);
666             u1 = u;
667             v1 = v;
668             a1 = a;
669             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
670             p += wrap3;
671             lum += wrap;
672             YUVA_IN(y, u, v, a, p, pal);
673             u1 += u;
674             v1 += v;
675             a1 += a;
676             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
677             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
678             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
679             cb++;
680             cr++;
681             p += -wrap3 + BPP;
682             lum += -wrap + 1;
683         }
684         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
685             YUVA_IN(y, u, v, a, p, pal);
686             u1 = u;
687             v1 = v;
688             a1 = a;
689             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
690
691             YUVA_IN(y, u, v, a, p + BPP, pal);
692             u1 += u;
693             v1 += v;
694             a1 += a;
695             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
696             p += wrap3;
697             lum += wrap;
698
699             YUVA_IN(y, u, v, a, p, pal);
700             u1 += u;
701             v1 += v;
702             a1 += a;
703             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
704
705             YUVA_IN(y, u, v, a, p + BPP, pal);
706             u1 += u;
707             v1 += v;
708             a1 += a;
709             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
710
711             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
712             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
713
714             cb++;
715             cr++;
716             p += -wrap3 + 2 * BPP;
717             lum += -wrap + 2;
718         }
719         if (w) {
720             YUVA_IN(y, u, v, a, p, pal);
721             u1 = u;
722             v1 = v;
723             a1 = a;
724             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
725             p += wrap3;
726             lum += wrap;
727             YUVA_IN(y, u, v, a, p, pal);
728             u1 += u;
729             v1 += v;
730             a1 += a;
731             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
732             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
733             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
734             cb++;
735             cr++;
736             p += -wrap3 + BPP;
737             lum += -wrap + 1;
738         }
739         p += wrap3 + (wrap3 - dstw * BPP);
740         lum += wrap + (wrap - dstw - dstx);
741         cb += dst->linesize[1] - width2 - skip2;
742         cr += dst->linesize[2] - width2 - skip2;
743     }
744     /* handle odd height */
745     if (h) {
746         lum += dstx;
747         cb += skip2;
748         cr += skip2;
749
750         if (dstx & 1) {
751             YUVA_IN(y, u, v, a, p, pal);
752             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
753             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
754             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
755             cb++;
756             cr++;
757             lum++;
758             p += BPP;
759         }
760         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
761             YUVA_IN(y, u, v, a, p, pal);
762             u1 = u;
763             v1 = v;
764             a1 = a;
765             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
766
767             YUVA_IN(y, u, v, a, p + BPP, pal);
768             u1 += u;
769             v1 += v;
770             a1 += a;
771             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
772             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
773             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
774             cb++;
775             cr++;
776             p += 2 * BPP;
777             lum += 2;
778         }
779         if (w) {
780             YUVA_IN(y, u, v, a, p, pal);
781             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
782             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
783             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
784         }
785     }
786 }
787
788 static void free_subpicture(SubPicture *sp)
789 {
790     avsubtitle_free(&sp->sub);
791 }
792
793 static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
794 {
795     float aspect_ratio;
796     int width, height, x, y;
797
798     if (vp->sar.num == 0)
799         aspect_ratio = 0;
800     else
801         aspect_ratio = av_q2d(vp->sar);
802
803     if (aspect_ratio <= 0.0)
804         aspect_ratio = 1.0;
805     aspect_ratio *= (float)vp->width / (float)vp->height;
806
807     /* XXX: we suppose the screen has a 1.0 pixel ratio */
808     height = scr_height;
809     width = ((int)rint(height * aspect_ratio)) & ~1;
810     if (width > scr_width) {
811         width = scr_width;
812         height = ((int)rint(width / aspect_ratio)) & ~1;
813     }
814     x = (scr_width - width) / 2;
815     y = (scr_height - height) / 2;
816     rect->x = scr_xleft + x;
817     rect->y = scr_ytop  + y;
818     rect->w = FFMAX(width,  1);
819     rect->h = FFMAX(height, 1);
820 }
821
822 static void video_image_display(VideoState *is)
823 {
824     VideoPicture *vp;
825     SubPicture *sp;
826     AVPicture pict;
827     SDL_Rect rect;
828     int i;
829
830     vp = &is->pictq[is->pictq_rindex];
831     if (vp->bmp) {
832         if (is->subtitle_st) {
833             if (is->subpq_size > 0) {
834                 sp = &is->subpq[is->subpq_rindex];
835
836                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
837                     SDL_LockYUVOverlay (vp->bmp);
838
839                     pict.data[0] = vp->bmp->pixels[0];
840                     pict.data[1] = vp->bmp->pixels[2];
841                     pict.data[2] = vp->bmp->pixels[1];
842
843                     pict.linesize[0] = vp->bmp->pitches[0];
844                     pict.linesize[1] = vp->bmp->pitches[2];
845                     pict.linesize[2] = vp->bmp->pitches[1];
846
847                     for (i = 0; i < sp->sub.num_rects; i++)
848                         blend_subrect(&pict, sp->sub.rects[i],
849                                       vp->bmp->w, vp->bmp->h);
850
851                     SDL_UnlockYUVOverlay (vp->bmp);
852                 }
853             }
854         }
855
856         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
857
858         SDL_DisplayYUVOverlay(vp->bmp, &rect);
859
860         if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
861             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
862             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
863             is->last_display_rect = rect;
864         }
865     }
866 }
867
868 static inline int compute_mod(int a, int b)
869 {
870     return a < 0 ? a%b + b : a%b;
871 }
872
873 static void video_audio_display(VideoState *s)
874 {
875     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
876     int ch, channels, h, h2, bgcolor, fgcolor;
877     int64_t time_diff;
878     int rdft_bits, nb_freq;
879
880     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
881         ;
882     nb_freq = 1 << (rdft_bits - 1);
883
884     /* compute display index : center on currently output samples */
885     channels = s->audio_tgt.channels;
886     nb_display_channels = channels;
887     if (!s->paused) {
888         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
889         n = 2 * channels;
890         delay = s->audio_write_buf_size;
891         delay /= n;
892
893         /* to be more precise, we take into account the time spent since
894            the last buffer computation */
895         if (audio_callback_time) {
896             time_diff = av_gettime() - audio_callback_time;
897             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
898         }
899
900         delay += 2 * data_used;
901         if (delay < data_used)
902             delay = data_used;
903
904         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
905         if (s->show_mode == SHOW_MODE_WAVES) {
906             h = INT_MIN;
907             for (i = 0; i < 1000; i += channels) {
908                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
909                 int a = s->sample_array[idx];
910                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
911                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
912                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
913                 int score = a - d;
914                 if (h < score && (b ^ c) < 0) {
915                     h = score;
916                     i_start = idx;
917                 }
918             }
919         }
920
921         s->last_i_start = i_start;
922     } else {
923         i_start = s->last_i_start;
924     }
925
926     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
927     if (s->show_mode == SHOW_MODE_WAVES) {
928         fill_rectangle(screen,
929                        s->xleft, s->ytop, s->width, s->height,
930                        bgcolor, 0);
931
932         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
933
934         /* total height for one channel */
935         h = s->height / nb_display_channels;
936         /* graph height / 2 */
937         h2 = (h * 9) / 20;
938         for (ch = 0; ch < nb_display_channels; ch++) {
939             i = i_start + ch;
940             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
941             for (x = 0; x < s->width; x++) {
942                 y = (s->sample_array[i] * h2) >> 15;
943                 if (y < 0) {
944                     y = -y;
945                     ys = y1 - y;
946                 } else {
947                     ys = y1;
948                 }
949                 fill_rectangle(screen,
950                                s->xleft + x, ys, 1, y,
951                                fgcolor, 0);
952                 i += channels;
953                 if (i >= SAMPLE_ARRAY_SIZE)
954                     i -= SAMPLE_ARRAY_SIZE;
955             }
956         }
957
958         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
959
960         for (ch = 1; ch < nb_display_channels; ch++) {
961             y = s->ytop + ch * h;
962             fill_rectangle(screen,
963                            s->xleft, y, s->width, 1,
964                            fgcolor, 0);
965         }
966         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
967     } else {
968         nb_display_channels= FFMIN(nb_display_channels, 2);
969         if (rdft_bits != s->rdft_bits) {
970             av_rdft_end(s->rdft);
971             av_free(s->rdft_data);
972             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
973             s->rdft_bits = rdft_bits;
974             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
975         }
976         {
977             FFTSample *data[2];
978             for (ch = 0; ch < nb_display_channels; ch++) {
979                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
980                 i = i_start + ch;
981                 for (x = 0; x < 2 * nb_freq; x++) {
982                     double w = (x-nb_freq) * (1.0 / nb_freq);
983                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
984                     i += channels;
985                     if (i >= SAMPLE_ARRAY_SIZE)
986                         i -= SAMPLE_ARRAY_SIZE;
987                 }
988                 av_rdft_calc(s->rdft, data[ch]);
989             }
990             /* Least efficient way to do this, we should of course
991              * directly access it but it is more than fast enough. */
992             for (y = 0; y < s->height; y++) {
993                 double w = 1 / sqrt(nb_freq);
994                 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]));
995                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
996                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
997                 a = FFMIN(a, 255);
998                 b = FFMIN(b, 255);
999                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1000
1001                 fill_rectangle(screen,
1002                             s->xpos, s->height-y, 1, 1,
1003                             fgcolor, 0);
1004             }
1005         }
1006         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1007         if (!s->paused)
1008             s->xpos++;
1009         if (s->xpos >= s->width)
1010             s->xpos= s->xleft;
1011     }
1012 }
1013
1014 static void stream_close(VideoState *is)
1015 {
1016     VideoPicture *vp;
1017     int i;
1018     /* XXX: use a special url_shutdown call to abort parse cleanly */
1019     is->abort_request = 1;
1020     SDL_WaitThread(is->read_tid, NULL);
1021     packet_queue_destroy(&is->videoq);
1022     packet_queue_destroy(&is->audioq);
1023     packet_queue_destroy(&is->subtitleq);
1024
1025     /* free all pictures */
1026     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1027         vp = &is->pictq[i];
1028         if (vp->bmp) {
1029             SDL_FreeYUVOverlay(vp->bmp);
1030             vp->bmp = NULL;
1031         }
1032     }
1033     for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
1034         free_subpicture(&is->subpq[i]);
1035     SDL_DestroyMutex(is->pictq_mutex);
1036     SDL_DestroyCond(is->pictq_cond);
1037     SDL_DestroyMutex(is->subpq_mutex);
1038     SDL_DestroyCond(is->subpq_cond);
1039     SDL_DestroyCond(is->continue_read_thread);
1040 #if !CONFIG_AVFILTER
1041     sws_freeContext(is->img_convert_ctx);
1042 #endif
1043     av_free(is);
1044 }
1045
1046 static void do_exit(VideoState *is)
1047 {
1048     if (is) {
1049         stream_close(is);
1050     }
1051     av_lockmgr_register(NULL);
1052     uninit_opts();
1053 #if CONFIG_AVFILTER
1054     av_freep(&vfilters);
1055 #endif
1056     avformat_network_deinit();
1057     if (show_status)
1058         printf("\n");
1059     SDL_Quit();
1060     av_log(NULL, AV_LOG_QUIET, "%s", "");
1061     exit(0);
1062 }
1063
1064 static void sigterm_handler(int sig)
1065 {
1066     exit(123);
1067 }
1068
1069 static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
1070 {
1071     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1072     int w,h;
1073     SDL_Rect rect;
1074
1075     if (is_full_screen) flags |= SDL_FULLSCREEN;
1076     else                flags |= SDL_RESIZABLE;
1077
1078     if (vp && vp->width) {
1079         calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
1080         default_width  = rect.w;
1081         default_height = rect.h;
1082     }
1083
1084     if (is_full_screen && fs_screen_width) {
1085         w = fs_screen_width;
1086         h = fs_screen_height;
1087     } else if (!is_full_screen && screen_width) {
1088         w = screen_width;
1089         h = screen_height;
1090     } else {
1091         w = default_width;
1092         h = default_height;
1093     }
1094     w = FFMIN(16383, w);
1095     if (screen && is->width == screen->w && screen->w == w
1096        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1097         return 0;
1098     screen = SDL_SetVideoMode(w, h, 0, flags);
1099     if (!screen) {
1100         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1101         do_exit(is);
1102     }
1103     if (!window_title)
1104         window_title = input_filename;
1105     SDL_WM_SetCaption(window_title, window_title);
1106
1107     is->width  = screen->w;
1108     is->height = screen->h;
1109
1110     return 0;
1111 }
1112
1113 /* display the current picture, if any */
1114 static void video_display(VideoState *is)
1115 {
1116     if (!screen)
1117         video_open(is, 0, NULL);
1118     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1119         video_audio_display(is);
1120     else if (is->video_st)
1121         video_image_display(is);
1122 }
1123
1124 static double get_clock(Clock *c)
1125 {
1126     if (*c->queue_serial != c->serial)
1127         return NAN;
1128     if (c->paused) {
1129         return c->pts;
1130     } else {
1131         double time = av_gettime() / 1000000.0;
1132         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1133     }
1134 }
1135
1136 static void set_clock_at(Clock *c, double pts, int serial, double time)
1137 {
1138     c->pts = pts;
1139     c->last_updated = time;
1140     c->pts_drift = c->pts - time;
1141     c->serial = serial;
1142 }
1143
1144 static void set_clock(Clock *c, double pts, int serial)
1145 {
1146     double time = av_gettime() / 1000000.0;
1147     set_clock_at(c, pts, serial, time);
1148 }
1149
1150 static void set_clock_speed(Clock *c, double speed)
1151 {
1152     set_clock(c, get_clock(c), c->serial);
1153     c->speed = speed;
1154 }
1155
1156 static void init_clock(Clock *c, int *queue_serial)
1157 {
1158     c->speed = 1.0;
1159     c->paused = 0;
1160     c->queue_serial = queue_serial;
1161     set_clock(c, NAN, -1);
1162 }
1163
1164 static void sync_clock_to_slave(Clock *c, Clock *slave)
1165 {
1166     double clock = get_clock(c);
1167     double slave_clock = get_clock(slave);
1168     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1169         set_clock(c, slave_clock, slave->serial);
1170 }
1171
1172 static int get_master_sync_type(VideoState *is) {
1173     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1174         if (is->video_st)
1175             return AV_SYNC_VIDEO_MASTER;
1176         else
1177             return AV_SYNC_AUDIO_MASTER;
1178     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1179         if (is->audio_st)
1180             return AV_SYNC_AUDIO_MASTER;
1181         else
1182             return AV_SYNC_EXTERNAL_CLOCK;
1183     } else {
1184         return AV_SYNC_EXTERNAL_CLOCK;
1185     }
1186 }
1187
1188 /* get the current master clock value */
1189 static double get_master_clock(VideoState *is)
1190 {
1191     double val;
1192
1193     switch (get_master_sync_type(is)) {
1194         case AV_SYNC_VIDEO_MASTER:
1195             val = get_clock(&is->vidclk);
1196             break;
1197         case AV_SYNC_AUDIO_MASTER:
1198             val = get_clock(&is->audclk);
1199             break;
1200         default:
1201             val = get_clock(&is->extclk);
1202             break;
1203     }
1204     return val;
1205 }
1206
1207 static void check_external_clock_speed(VideoState *is) {
1208    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1209        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1210        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1211    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1212               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1213        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1214    } else {
1215        double speed = is->extclk.speed;
1216        if (speed != 1.0)
1217            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1218    }
1219 }
1220
1221 /* seek in the stream */
1222 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1223 {
1224     if (!is->seek_req) {
1225         is->seek_pos = pos;
1226         is->seek_rel = rel;
1227         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1228         if (seek_by_bytes)
1229             is->seek_flags |= AVSEEK_FLAG_BYTE;
1230         is->seek_req = 1;
1231         SDL_CondSignal(is->continue_read_thread);
1232     }
1233 }
1234
1235 /* pause or resume the video */
1236 static void stream_toggle_pause(VideoState *is)
1237 {
1238     if (is->paused) {
1239         is->frame_timer += av_gettime() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1240         if (is->read_pause_return != AVERROR(ENOSYS)) {
1241             is->vidclk.paused = 0;
1242         }
1243         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1244     }
1245     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1246     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1247 }
1248
1249 static void toggle_pause(VideoState *is)
1250 {
1251     stream_toggle_pause(is);
1252     is->step = 0;
1253 }
1254
1255 static void step_to_next_frame(VideoState *is)
1256 {
1257     /* if the stream is paused unpause it, then step */
1258     if (is->paused)
1259         stream_toggle_pause(is);
1260     is->step = 1;
1261 }
1262
1263 static double compute_target_delay(double delay, VideoState *is)
1264 {
1265     double sync_threshold, diff;
1266
1267     /* update delay to follow master synchronisation source */
1268     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1269         /* if video is slave, we try to correct big delays by
1270            duplicating or deleting a frame */
1271         diff = get_clock(&is->vidclk) - get_master_clock(is);
1272
1273         /* skip or repeat frame. We take into account the
1274            delay to compute the threshold. I still don't know
1275            if it is the best guess */
1276         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1277         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1278             if (diff <= -sync_threshold)
1279                 delay = FFMAX(0, delay + diff);
1280             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1281                 delay = delay + diff;
1282             else if (diff >= sync_threshold)
1283                 delay = 2 * delay;
1284         }
1285     }
1286
1287     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1288             delay, -diff);
1289
1290     return delay;
1291 }
1292
1293 static void pictq_next_picture(VideoState *is) {
1294     /* update queue size and signal for next picture */
1295     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1296         is->pictq_rindex = 0;
1297
1298     SDL_LockMutex(is->pictq_mutex);
1299     is->pictq_size--;
1300     SDL_CondSignal(is->pictq_cond);
1301     SDL_UnlockMutex(is->pictq_mutex);
1302 }
1303
1304 static int pictq_prev_picture(VideoState *is) {
1305     VideoPicture *prevvp;
1306     int ret = 0;
1307     /* update queue size and signal for the previous picture */
1308     prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1309     if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
1310         SDL_LockMutex(is->pictq_mutex);
1311         if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
1312             if (--is->pictq_rindex == -1)
1313                 is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
1314             is->pictq_size++;
1315             ret = 1;
1316         }
1317         SDL_CondSignal(is->pictq_cond);
1318         SDL_UnlockMutex(is->pictq_mutex);
1319     }
1320     return ret;
1321 }
1322
1323 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1324     /* update current video pts */
1325     set_clock(&is->vidclk, pts, serial);
1326     sync_clock_to_slave(&is->extclk, &is->vidclk);
1327     is->video_current_pos = pos;
1328     is->frame_last_pts = pts;
1329 }
1330
1331 /* called to display each frame */
1332 static void video_refresh(void *opaque, double *remaining_time)
1333 {
1334     VideoState *is = opaque;
1335     VideoPicture *vp;
1336     double time;
1337
1338     SubPicture *sp, *sp2;
1339
1340     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1341         check_external_clock_speed(is);
1342
1343     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1344         time = av_gettime() / 1000000.0;
1345         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1346             video_display(is);
1347             is->last_vis_time = time;
1348         }
1349         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1350     }
1351
1352     if (is->video_st) {
1353         int redisplay = 0;
1354         if (is->force_refresh)
1355             redisplay = pictq_prev_picture(is);
1356 retry:
1357         if (is->pictq_size == 0) {
1358             SDL_LockMutex(is->pictq_mutex);
1359             if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
1360                 update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos, is->frame_last_dropped_serial);
1361                 is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1362             }
1363             SDL_UnlockMutex(is->pictq_mutex);
1364             // nothing to do, no picture to display in the queue
1365         } else {
1366             double last_duration, duration, delay;
1367             /* dequeue the picture */
1368             vp = &is->pictq[is->pictq_rindex];
1369
1370             if (vp->serial != is->videoq.serial) {
1371                 pictq_next_picture(is);
1372                 redisplay = 0;
1373                 goto retry;
1374             }
1375
1376             if (is->paused)
1377                 goto display;
1378
1379             /* compute nominal last_duration */
1380             last_duration = vp->pts - is->frame_last_pts;
1381             if (!isnan(last_duration) && last_duration > 0 && last_duration < is->max_frame_duration) {
1382                 /* if duration of the last frame was sane, update last_duration in video state */
1383                 is->frame_last_duration = last_duration;
1384             }
1385             if (redisplay)
1386                 delay = 0.0;
1387             else
1388                 delay = compute_target_delay(is->frame_last_duration, is);
1389
1390             time= av_gettime()/1000000.0;
1391             if (time < is->frame_timer + delay && !redisplay) {
1392                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1393                 return;
1394             }
1395
1396             is->frame_timer += delay;
1397             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1398                 is->frame_timer = time;
1399
1400             SDL_LockMutex(is->pictq_mutex);
1401             if (!redisplay && !isnan(vp->pts))
1402                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1403             SDL_UnlockMutex(is->pictq_mutex);
1404
1405             if (is->pictq_size > 1) {
1406                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1407                 duration = nextvp->pts - vp->pts;
1408                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1409                     if (!redisplay)
1410                         is->frame_drops_late++;
1411                     pictq_next_picture(is);
1412                     redisplay = 0;
1413                     goto retry;
1414                 }
1415             }
1416
1417             if (is->subtitle_st) {
1418                     while (is->subpq_size > 0) {
1419                         sp = &is->subpq[is->subpq_rindex];
1420
1421                         if (is->subpq_size > 1)
1422                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1423                         else
1424                             sp2 = NULL;
1425
1426                         if (sp->serial != is->subtitleq.serial
1427                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1428                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1429                         {
1430                             free_subpicture(sp);
1431
1432                             /* update queue size and signal for next picture */
1433                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1434                                 is->subpq_rindex = 0;
1435
1436                             SDL_LockMutex(is->subpq_mutex);
1437                             is->subpq_size--;
1438                             SDL_CondSignal(is->subpq_cond);
1439                             SDL_UnlockMutex(is->subpq_mutex);
1440                         } else {
1441                             break;
1442                         }
1443                     }
1444             }
1445
1446 display:
1447             /* display picture */
1448             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1449                 video_display(is);
1450
1451             pictq_next_picture(is);
1452
1453             if (is->step && !is->paused)
1454                 stream_toggle_pause(is);
1455         }
1456     }
1457     is->force_refresh = 0;
1458     if (show_status) {
1459         static int64_t last_time;
1460         int64_t cur_time;
1461         int aqsize, vqsize, sqsize;
1462         double av_diff;
1463
1464         cur_time = av_gettime();
1465         if (!last_time || (cur_time - last_time) >= 30000) {
1466             aqsize = 0;
1467             vqsize = 0;
1468             sqsize = 0;
1469             if (is->audio_st)
1470                 aqsize = is->audioq.size;
1471             if (is->video_st)
1472                 vqsize = is->videoq.size;
1473             if (is->subtitle_st)
1474                 sqsize = is->subtitleq.size;
1475             av_diff = 0;
1476             if (is->audio_st && is->video_st)
1477                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1478             else if (is->video_st)
1479                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1480             else if (is->audio_st)
1481                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1482             av_log(NULL, AV_LOG_INFO,
1483                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1484                    get_master_clock(is),
1485                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1486                    av_diff,
1487                    is->frame_drops_early + is->frame_drops_late,
1488                    aqsize / 1024,
1489                    vqsize / 1024,
1490                    sqsize,
1491                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1492                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1493             fflush(stdout);
1494             last_time = cur_time;
1495         }
1496     }
1497 }
1498
1499 /* allocate a picture (needs to do that in main thread to avoid
1500    potential locking problems */
1501 static void alloc_picture(VideoState *is)
1502 {
1503     VideoPicture *vp;
1504     int64_t bufferdiff;
1505
1506     vp = &is->pictq[is->pictq_windex];
1507
1508     if (vp->bmp)
1509         SDL_FreeYUVOverlay(vp->bmp);
1510
1511     video_open(is, 0, vp);
1512
1513     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1514                                    SDL_YV12_OVERLAY,
1515                                    screen);
1516     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1517     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1518         /* SDL allocates a buffer smaller than requested if the video
1519          * overlay hardware is unable to support the requested size. */
1520         av_log(NULL, AV_LOG_FATAL,
1521                "Error: the video system does not support an image\n"
1522                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1523                         "to reduce the image size.\n", vp->width, vp->height );
1524         do_exit(is);
1525     }
1526
1527     SDL_LockMutex(is->pictq_mutex);
1528     vp->allocated = 1;
1529     SDL_CondSignal(is->pictq_cond);
1530     SDL_UnlockMutex(is->pictq_mutex);
1531 }
1532
1533 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1534     int i, width, height;
1535     Uint8 *p, *maxp;
1536     for (i = 0; i < 3; i++) {
1537         width  = bmp->w;
1538         height = bmp->h;
1539         if (i > 0) {
1540             width  >>= 1;
1541             height >>= 1;
1542         }
1543         if (bmp->pitches[i] > width) {
1544             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1545             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1546                 *(p+1) = *p;
1547         }
1548     }
1549 }
1550
1551 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos, int serial)
1552 {
1553     VideoPicture *vp;
1554
1555 #if defined(DEBUG_SYNC) && 0
1556     printf("frame_type=%c pts=%0.3f\n",
1557            av_get_picture_type_char(src_frame->pict_type), pts);
1558 #endif
1559
1560     /* wait until we have space to put a new picture */
1561     SDL_LockMutex(is->pictq_mutex);
1562
1563     /* keep the last already displayed picture in the queue */
1564     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
1565            !is->videoq.abort_request) {
1566         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1567     }
1568     SDL_UnlockMutex(is->pictq_mutex);
1569
1570     if (is->videoq.abort_request)
1571         return -1;
1572
1573     vp = &is->pictq[is->pictq_windex];
1574
1575     vp->sar = src_frame->sample_aspect_ratio;
1576
1577     /* alloc or resize hardware picture buffer */
1578     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1579         vp->width  != src_frame->width ||
1580         vp->height != src_frame->height) {
1581         SDL_Event event;
1582
1583         vp->allocated  = 0;
1584         vp->reallocate = 0;
1585         vp->width = src_frame->width;
1586         vp->height = src_frame->height;
1587
1588         /* the allocation must be done in the main thread to avoid
1589            locking problems. */
1590         event.type = FF_ALLOC_EVENT;
1591         event.user.data1 = is;
1592         SDL_PushEvent(&event);
1593
1594         /* wait until the picture is allocated */
1595         SDL_LockMutex(is->pictq_mutex);
1596         while (!vp->allocated && !is->videoq.abort_request) {
1597             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1598         }
1599         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1600         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1601             while (!vp->allocated) {
1602                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1603             }
1604         }
1605         SDL_UnlockMutex(is->pictq_mutex);
1606
1607         if (is->videoq.abort_request)
1608             return -1;
1609     }
1610
1611     /* if the frame is not skipped, then display it */
1612     if (vp->bmp) {
1613         AVPicture pict = { { 0 } };
1614
1615         /* get a pointer on the bitmap */
1616         SDL_LockYUVOverlay (vp->bmp);
1617
1618         pict.data[0] = vp->bmp->pixels[0];
1619         pict.data[1] = vp->bmp->pixels[2];
1620         pict.data[2] = vp->bmp->pixels[1];
1621
1622         pict.linesize[0] = vp->bmp->pitches[0];
1623         pict.linesize[1] = vp->bmp->pitches[2];
1624         pict.linesize[2] = vp->bmp->pitches[1];
1625
1626 #if CONFIG_AVFILTER
1627         // FIXME use direct rendering
1628         av_picture_copy(&pict, (AVPicture *)src_frame,
1629                         src_frame->format, vp->width, vp->height);
1630 #else
1631         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1632         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1633             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1634             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1635         if (is->img_convert_ctx == NULL) {
1636             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1637             exit(1);
1638         }
1639         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1640                   0, vp->height, pict.data, pict.linesize);
1641 #endif
1642         /* workaround SDL PITCH_WORKAROUND */
1643         duplicate_right_border_pixels(vp->bmp);
1644         /* update the bitmap content */
1645         SDL_UnlockYUVOverlay(vp->bmp);
1646
1647         vp->pts = pts;
1648         vp->pos = pos;
1649         vp->serial = serial;
1650
1651         /* now we can update the picture count */
1652         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1653             is->pictq_windex = 0;
1654         SDL_LockMutex(is->pictq_mutex);
1655         is->pictq_size++;
1656         SDL_UnlockMutex(is->pictq_mutex);
1657     }
1658     return 0;
1659 }
1660
1661 static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
1662 {
1663     int got_picture;
1664
1665     if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
1666         return -1;
1667
1668     if (pkt->data == flush_pkt.data) {
1669         avcodec_flush_buffers(is->video_st->codec);
1670
1671         SDL_LockMutex(is->pictq_mutex);
1672         // Make sure there are no long delay timers (ideally we should just flush the queue but that's harder)
1673         while (is->pictq_size && !is->videoq.abort_request) {
1674             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1675         }
1676         is->video_current_pos = -1;
1677         is->frame_last_pts = AV_NOPTS_VALUE;
1678         is->frame_last_duration = 0;
1679         is->frame_timer = (double)av_gettime() / 1000000.0;
1680         is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1681         SDL_UnlockMutex(is->pictq_mutex);
1682         return 0;
1683     }
1684
1685     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1686         return 0;
1687
1688     if (!got_picture && !pkt->data)
1689         is->video_finished = *serial;
1690
1691     if (got_picture) {
1692         int ret = 1;
1693         double dpts = NAN;
1694
1695         if (decoder_reorder_pts == -1) {
1696             frame->pts = av_frame_get_best_effort_timestamp(frame);
1697         } else if (decoder_reorder_pts) {
1698             frame->pts = frame->pkt_pts;
1699         } else {
1700             frame->pts = frame->pkt_dts;
1701         }
1702
1703         if (frame->pts != AV_NOPTS_VALUE)
1704             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1705
1706         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1707
1708         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1709             SDL_LockMutex(is->pictq_mutex);
1710             if (is->frame_last_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE) {
1711                 double clockdiff = get_clock(&is->vidclk) - get_master_clock(is);
1712                 double ptsdiff = dpts - is->frame_last_pts;
1713                 if (!isnan(clockdiff) && fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
1714                     !isnan(ptsdiff) && ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
1715                     clockdiff + ptsdiff - is->frame_last_filter_delay < 0 &&
1716                     is->videoq.nb_packets) {
1717                     is->frame_last_dropped_pos = pkt->pos;
1718                     is->frame_last_dropped_pts = dpts;
1719                     is->frame_last_dropped_serial = *serial;
1720                     is->frame_drops_early++;
1721                     av_frame_unref(frame);
1722                     ret = 0;
1723                 }
1724             }
1725             SDL_UnlockMutex(is->pictq_mutex);
1726         }
1727
1728         return ret;
1729     }
1730     return 0;
1731 }
1732
1733 #if CONFIG_AVFILTER
1734 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1735                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1736 {
1737     int ret;
1738     AVFilterInOut *outputs = NULL, *inputs = NULL;
1739
1740     if (filtergraph) {
1741         outputs = avfilter_inout_alloc();
1742         inputs  = avfilter_inout_alloc();
1743         if (!outputs || !inputs) {
1744             ret = AVERROR(ENOMEM);
1745             goto fail;
1746         }
1747
1748         outputs->name       = av_strdup("in");
1749         outputs->filter_ctx = source_ctx;
1750         outputs->pad_idx    = 0;
1751         outputs->next       = NULL;
1752
1753         inputs->name        = av_strdup("out");
1754         inputs->filter_ctx  = sink_ctx;
1755         inputs->pad_idx     = 0;
1756         inputs->next        = NULL;
1757
1758         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1759             goto fail;
1760     } else {
1761         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1762             goto fail;
1763     }
1764
1765     ret = avfilter_graph_config(graph, NULL);
1766 fail:
1767     avfilter_inout_free(&outputs);
1768     avfilter_inout_free(&inputs);
1769     return ret;
1770 }
1771
1772 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1773 {
1774     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1775     char sws_flags_str[128];
1776     char buffersrc_args[256];
1777     int ret;
1778     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
1779     AVCodecContext *codec = is->video_st->codec;
1780     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1781
1782     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1783     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1784     graph->scale_sws_opts = av_strdup(sws_flags_str);
1785
1786     snprintf(buffersrc_args, sizeof(buffersrc_args),
1787              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1788              frame->width, frame->height, frame->format,
1789              is->video_st->time_base.num, is->video_st->time_base.den,
1790              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1791     if (fr.num && fr.den)
1792         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1793
1794     if ((ret = avfilter_graph_create_filter(&filt_src,
1795                                             avfilter_get_by_name("buffer"),
1796                                             "ffplay_buffer", buffersrc_args, NULL,
1797                                             graph)) < 0)
1798         goto fail;
1799
1800     ret = avfilter_graph_create_filter(&filt_out,
1801                                        avfilter_get_by_name("buffersink"),
1802                                        "ffplay_buffersink", NULL, NULL, graph);
1803     if (ret < 0)
1804         goto fail;
1805
1806     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1807         goto fail;
1808
1809     /* SDL YUV code is not handling odd width/height for some driver
1810      * combinations, therefore we crop the picture to an even width/height. */
1811     if ((ret = avfilter_graph_create_filter(&filt_crop,
1812                                             avfilter_get_by_name("crop"),
1813                                             "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
1814         goto fail;
1815     if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
1816         goto fail;
1817
1818     if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
1819         goto fail;
1820
1821     is->in_video_filter  = filt_src;
1822     is->out_video_filter = filt_out;
1823
1824 fail:
1825     return ret;
1826 }
1827
1828 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1829 {
1830     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1831     int sample_rates[2] = { 0, -1 };
1832     int64_t channel_layouts[2] = { 0, -1 };
1833     int channels[2] = { 0, -1 };
1834     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1835     char asrc_args[256];
1836     int ret;
1837
1838     avfilter_graph_free(&is->agraph);
1839     if (!(is->agraph = avfilter_graph_alloc()))
1840         return AVERROR(ENOMEM);
1841
1842     ret = snprintf(asrc_args, sizeof(asrc_args),
1843                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1844                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1845                    is->audio_filter_src.channels,
1846                    1, is->audio_filter_src.freq);
1847     if (is->audio_filter_src.channel_layout)
1848         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1849                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1850
1851     ret = avfilter_graph_create_filter(&filt_asrc,
1852                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1853                                        asrc_args, NULL, is->agraph);
1854     if (ret < 0)
1855         goto end;
1856
1857
1858     ret = avfilter_graph_create_filter(&filt_asink,
1859                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1860                                        NULL, NULL, is->agraph);
1861     if (ret < 0)
1862         goto end;
1863
1864     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1865         goto end;
1866     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1867         goto end;
1868
1869     if (force_output_format) {
1870         channel_layouts[0] = is->audio_tgt.channel_layout;
1871         channels       [0] = is->audio_tgt.channels;
1872         sample_rates   [0] = is->audio_tgt.freq;
1873         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1874             goto end;
1875         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1876             goto end;
1877         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1878             goto end;
1879         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1880             goto end;
1881     }
1882
1883
1884     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1885         goto end;
1886
1887     is->in_audio_filter  = filt_asrc;
1888     is->out_audio_filter = filt_asink;
1889
1890 end:
1891     if (ret < 0)
1892         avfilter_graph_free(&is->agraph);
1893     return ret;
1894 }
1895 #endif  /* CONFIG_AVFILTER */
1896
1897 static int video_thread(void *arg)
1898 {
1899     AVPacket pkt = { 0 };
1900     VideoState *is = arg;
1901     AVFrame *frame = av_frame_alloc();
1902     double pts;
1903     int ret;
1904     int serial = 0;
1905
1906 #if CONFIG_AVFILTER
1907     AVFilterGraph *graph = avfilter_graph_alloc();
1908     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1909     int last_w = 0;
1910     int last_h = 0;
1911     enum AVPixelFormat last_format = -2;
1912     int last_serial = -1;
1913 #endif
1914
1915     for (;;) {
1916         while (is->paused && !is->videoq.abort_request)
1917             SDL_Delay(10);
1918
1919         avcodec_get_frame_defaults(frame);
1920         av_free_packet(&pkt);
1921
1922         ret = get_video_frame(is, frame, &pkt, &serial);
1923         if (ret < 0)
1924             goto the_end;
1925         if (!ret)
1926             continue;
1927
1928 #if CONFIG_AVFILTER
1929         if (   last_w != frame->width
1930             || last_h != frame->height
1931             || last_format != frame->format
1932             || last_serial != serial) {
1933             av_log(NULL, AV_LOG_DEBUG,
1934                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
1935                    last_w, last_h,
1936                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
1937                    frame->width, frame->height,
1938                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
1939             avfilter_graph_free(&graph);
1940             graph = avfilter_graph_alloc();
1941             if ((ret = configure_video_filters(graph, is, vfilters, frame)) < 0) {
1942                 SDL_Event event;
1943                 event.type = FF_QUIT_EVENT;
1944                 event.user.data1 = is;
1945                 SDL_PushEvent(&event);
1946                 av_free_packet(&pkt);
1947                 goto the_end;
1948             }
1949             filt_in  = is->in_video_filter;
1950             filt_out = is->out_video_filter;
1951             last_w = frame->width;
1952             last_h = frame->height;
1953             last_format = frame->format;
1954             last_serial = serial;
1955         }
1956
1957         ret = av_buffersrc_add_frame(filt_in, frame);
1958         if (ret < 0)
1959             goto the_end;
1960         av_frame_unref(frame);
1961         avcodec_get_frame_defaults(frame);
1962         av_free_packet(&pkt);
1963
1964         while (ret >= 0) {
1965             is->frame_last_returned_time = av_gettime() / 1000000.0;
1966
1967             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
1968             if (ret < 0) {
1969                 if (ret == AVERROR_EOF)
1970                     is->video_finished = serial;
1971                 ret = 0;
1972                 break;
1973             }
1974
1975             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1976             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1977                 is->frame_last_filter_delay = 0;
1978
1979             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(filt_out->inputs[0]->time_base);
1980             ret = queue_picture(is, frame, pts, av_frame_get_pkt_pos(frame), serial);
1981             av_frame_unref(frame);
1982         }
1983 #else
1984         pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(is->video_st->time_base);
1985         ret = queue_picture(is, frame, pts, pkt.pos, serial);
1986         av_frame_unref(frame);
1987 #endif
1988
1989         if (ret < 0)
1990             goto the_end;
1991     }
1992  the_end:
1993     avcodec_flush_buffers(is->video_st->codec);
1994 #if CONFIG_AVFILTER
1995     avfilter_graph_free(&graph);
1996 #endif
1997     av_free_packet(&pkt);
1998     av_frame_free(&frame);
1999     return 0;
2000 }
2001
2002 static int subtitle_thread(void *arg)
2003 {
2004     VideoState *is = arg;
2005     SubPicture *sp;
2006     AVPacket pkt1, *pkt = &pkt1;
2007     int got_subtitle;
2008     int serial;
2009     double pts;
2010     int i, j;
2011     int r, g, b, y, u, v, a;
2012
2013     for (;;) {
2014         while (is->paused && !is->subtitleq.abort_request) {
2015             SDL_Delay(10);
2016         }
2017         if (packet_queue_get(&is->subtitleq, pkt, 1, &serial) < 0)
2018             break;
2019
2020         if (pkt->data == flush_pkt.data) {
2021             avcodec_flush_buffers(is->subtitle_st->codec);
2022             continue;
2023         }
2024         SDL_LockMutex(is->subpq_mutex);
2025         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
2026                !is->subtitleq.abort_request) {
2027             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
2028         }
2029         SDL_UnlockMutex(is->subpq_mutex);
2030
2031         if (is->subtitleq.abort_request)
2032             return 0;
2033
2034         sp = &is->subpq[is->subpq_windex];
2035
2036        /* NOTE: ipts is the PTS of the _first_ picture beginning in
2037            this packet, if any */
2038         pts = 0;
2039         if (pkt->pts != AV_NOPTS_VALUE)
2040             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
2041
2042         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
2043                                  &got_subtitle, pkt);
2044         if (got_subtitle && sp->sub.format == 0) {
2045             if (sp->sub.pts != AV_NOPTS_VALUE)
2046                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2047             sp->pts = pts;
2048             sp->serial = serial;
2049
2050             for (i = 0; i < sp->sub.num_rects; i++)
2051             {
2052                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2053                 {
2054                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2055                     y = RGB_TO_Y_CCIR(r, g, b);
2056                     u = RGB_TO_U_CCIR(r, g, b, 0);
2057                     v = RGB_TO_V_CCIR(r, g, b, 0);
2058                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2059                 }
2060             }
2061
2062             /* now we can update the picture count */
2063             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
2064                 is->subpq_windex = 0;
2065             SDL_LockMutex(is->subpq_mutex);
2066             is->subpq_size++;
2067             SDL_UnlockMutex(is->subpq_mutex);
2068         } else if (got_subtitle) {
2069             avsubtitle_free(&sp->sub);
2070         }
2071         av_free_packet(pkt);
2072     }
2073     return 0;
2074 }
2075
2076 /* copy samples for viewing in editor window */
2077 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2078 {
2079     int size, len;
2080
2081     size = samples_size / sizeof(short);
2082     while (size > 0) {
2083         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2084         if (len > size)
2085             len = size;
2086         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2087         samples += len;
2088         is->sample_array_index += len;
2089         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2090             is->sample_array_index = 0;
2091         size -= len;
2092     }
2093 }
2094
2095 /* return the wanted number of samples to get better sync if sync_type is video
2096  * or external master clock */
2097 static int synchronize_audio(VideoState *is, int nb_samples)
2098 {
2099     int wanted_nb_samples = nb_samples;
2100
2101     /* if not master, then we try to remove or add samples to correct the clock */
2102     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2103         double diff, avg_diff;
2104         int min_nb_samples, max_nb_samples;
2105
2106         diff = get_clock(&is->audclk) - get_master_clock(is);
2107
2108         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2109             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2110             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2111                 /* not enough measures to have a correct estimate */
2112                 is->audio_diff_avg_count++;
2113             } else {
2114                 /* estimate the A-V difference */
2115                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2116
2117                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2118                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2119                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2120                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2121                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2122                 }
2123                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2124                         diff, avg_diff, wanted_nb_samples - nb_samples,
2125                         is->audio_clock, is->audio_diff_threshold);
2126             }
2127         } else {
2128             /* too big difference : may be initial PTS errors, so
2129                reset A-V filter */
2130             is->audio_diff_avg_count = 0;
2131             is->audio_diff_cum       = 0;
2132         }
2133     }
2134
2135     return wanted_nb_samples;
2136 }
2137
2138 /**
2139  * Decode one audio frame and return its uncompressed size.
2140  *
2141  * The processed audio frame is decoded, converted if required, and
2142  * stored in is->audio_buf, with size in bytes given by the return
2143  * value.
2144  */
2145 static int audio_decode_frame(VideoState *is)
2146 {
2147     AVPacket *pkt_temp = &is->audio_pkt_temp;
2148     AVPacket *pkt = &is->audio_pkt;
2149     AVCodecContext *dec = is->audio_st->codec;
2150     int len1, data_size, resampled_data_size;
2151     int64_t dec_channel_layout;
2152     int got_frame;
2153     av_unused double audio_clock0;
2154     int wanted_nb_samples;
2155     AVRational tb;
2156     int ret;
2157     int reconfigure;
2158
2159     for (;;) {
2160         /* NOTE: the audio packet can contain several frames */
2161         while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
2162             if (!is->frame) {
2163                 if (!(is->frame = avcodec_alloc_frame()))
2164                     return AVERROR(ENOMEM);
2165             } else {
2166                 av_frame_unref(is->frame);
2167                 avcodec_get_frame_defaults(is->frame);
2168             }
2169
2170             if (is->audioq.serial != is->audio_pkt_temp_serial)
2171                 break;
2172
2173             if (is->paused)
2174                 return -1;
2175
2176             if (!is->audio_buf_frames_pending) {
2177                 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
2178                 if (len1 < 0) {
2179                     /* if error, we skip the frame */
2180                     pkt_temp->size = 0;
2181                     break;
2182                 }
2183
2184                 pkt_temp->dts =
2185                 pkt_temp->pts = AV_NOPTS_VALUE;
2186                 pkt_temp->data += len1;
2187                 pkt_temp->size -= len1;
2188                 if (pkt_temp->data && pkt_temp->size <= 0 || !pkt_temp->data && !got_frame)
2189                     pkt_temp->stream_index = -1;
2190                 if (!pkt_temp->data && !got_frame)
2191                     is->audio_finished = is->audio_pkt_temp_serial;
2192
2193                 if (!got_frame)
2194                     continue;
2195
2196                 tb = (AVRational){1, is->frame->sample_rate};
2197                 if (is->frame->pts != AV_NOPTS_VALUE)
2198                     is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
2199                 else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
2200                     is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
2201                 else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
2202 #if CONFIG_AVFILTER
2203                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
2204 #else
2205                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
2206 #endif
2207
2208                 if (is->frame->pts != AV_NOPTS_VALUE)
2209                     is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;
2210
2211 #if CONFIG_AVFILTER
2212                 dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
2213
2214                 reconfigure =
2215                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2216                                    is->frame->format, av_frame_get_channels(is->frame))    ||
2217                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2218                     is->audio_filter_src.freq           != is->frame->sample_rate ||
2219                     is->audio_pkt_temp_serial           != is->audio_last_serial;
2220
2221                 if (reconfigure) {
2222                     char buf1[1024], buf2[1024];
2223                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2224                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2225                     av_log(NULL, AV_LOG_DEBUG,
2226                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2227                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, is->audio_last_serial,
2228                            is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);
2229
2230                     is->audio_filter_src.fmt            = is->frame->format;
2231                     is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
2232                     is->audio_filter_src.channel_layout = dec_channel_layout;
2233                     is->audio_filter_src.freq           = is->frame->sample_rate;
2234                     is->audio_last_serial               = is->audio_pkt_temp_serial;
2235
2236                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2237                         return ret;
2238                 }
2239
2240                 if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
2241                     return ret;
2242                 av_frame_unref(is->frame);
2243 #endif
2244             }
2245 #if CONFIG_AVFILTER
2246             if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
2247                 if (ret == AVERROR(EAGAIN)) {
2248                     is->audio_buf_frames_pending = 0;
2249                     continue;
2250                 }
2251                 if (ret == AVERROR_EOF)
2252                     is->audio_finished = is->audio_pkt_temp_serial;
2253                 return ret;
2254             }
2255             is->audio_buf_frames_pending = 1;
2256             tb = is->out_audio_filter->inputs[0]->time_base;
2257 #endif
2258
2259             data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
2260                                                    is->frame->nb_samples,
2261                                                    is->frame->format, 1);
2262
2263             dec_channel_layout =
2264                 (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
2265                 is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
2266             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
2267
2268             if (is->frame->format        != is->audio_src.fmt            ||
2269                 dec_channel_layout       != is->audio_src.channel_layout ||
2270                 is->frame->sample_rate   != is->audio_src.freq           ||
2271                 (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
2272                 swr_free(&is->swr_ctx);
2273                 is->swr_ctx = swr_alloc_set_opts(NULL,
2274                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2275                                                  dec_channel_layout,           is->frame->format, is->frame->sample_rate,
2276                                                  0, NULL);
2277                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2278                     av_log(NULL, AV_LOG_ERROR,
2279                            "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2280                             is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
2281                             is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2282                     break;
2283                 }
2284                 is->audio_src.channel_layout = dec_channel_layout;
2285                 is->audio_src.channels       = av_frame_get_channels(is->frame);
2286                 is->audio_src.freq = is->frame->sample_rate;
2287                 is->audio_src.fmt = is->frame->format;
2288             }
2289
2290             if (is->swr_ctx) {
2291                 const uint8_t **in = (const uint8_t **)is->frame->extended_data;
2292                 uint8_t **out = &is->audio_buf1;
2293                 int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
2294                 int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2295                 int len2;
2296                 if (out_size < 0) {
2297                     av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2298                     break;
2299                 }
2300                 if (wanted_nb_samples != is->frame->nb_samples) {
2301                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
2302                                                 wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
2303                         av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2304                         break;
2305                     }
2306                 }
2307                 av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2308                 if (!is->audio_buf1)
2309                     return AVERROR(ENOMEM);
2310                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
2311                 if (len2 < 0) {
2312                     av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2313                     break;
2314                 }
2315                 if (len2 == out_count) {
2316                     av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2317                     swr_init(is->swr_ctx);
2318                 }
2319                 is->audio_buf = is->audio_buf1;
2320                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2321             } else {
2322                 is->audio_buf = is->frame->data[0];
2323                 resampled_data_size = data_size;
2324             }
2325
2326             audio_clock0 = is->audio_clock;
2327             /* update the audio clock with the pts */
2328             if (is->frame->pts != AV_NOPTS_VALUE)
2329                 is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
2330             else
2331                 is->audio_clock = NAN;
2332             is->audio_clock_serial = is->audio_pkt_temp_serial;
2333 #ifdef DEBUG
2334             {
2335                 static double last_clock;
2336                 printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2337                        is->audio_clock - last_clock,
2338                        is->audio_clock, audio_clock0);
2339                 last_clock = is->audio_clock;
2340             }
2341 #endif
2342             return resampled_data_size;
2343         }
2344
2345         /* free the current packet */
2346         if (pkt->data)
2347             av_free_packet(pkt);
2348         memset(pkt_temp, 0, sizeof(*pkt_temp));
2349         pkt_temp->stream_index = -1;
2350
2351         if (is->audioq.abort_request) {
2352             return -1;
2353         }
2354
2355         if (is->audioq.nb_packets == 0)
2356             SDL_CondSignal(is->continue_read_thread);
2357
2358         /* read next packet */
2359         if ((packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
2360             return -1;
2361
2362         if (pkt->data == flush_pkt.data) {
2363             avcodec_flush_buffers(dec);
2364             is->audio_buf_frames_pending = 0;
2365             is->audio_frame_next_pts = AV_NOPTS_VALUE;
2366             if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
2367                 is->audio_frame_next_pts = is->audio_st->start_time;
2368         }
2369
2370         *pkt_temp = *pkt;
2371     }
2372 }
2373
2374 /* prepare a new audio buffer */
2375 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2376 {
2377     VideoState *is = opaque;
2378     int audio_size, len1;
2379     int bytes_per_sec;
2380     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2381
2382     audio_callback_time = av_gettime();
2383
2384     while (len > 0) {
2385         if (is->audio_buf_index >= is->audio_buf_size) {
2386            audio_size = audio_decode_frame(is);
2387            if (audio_size < 0) {
2388                 /* if error, just output silence */
2389                is->audio_buf      = is->silence_buf;
2390                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2391            } else {
2392                if (is->show_mode != SHOW_MODE_VIDEO)
2393                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2394                is->audio_buf_size = audio_size;
2395            }
2396            is->audio_buf_index = 0;
2397         }
2398         len1 = is->audio_buf_size - is->audio_buf_index;
2399         if (len1 > len)
2400             len1 = len;
2401         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2402         len -= len1;
2403         stream += len1;
2404         is->audio_buf_index += len1;
2405     }
2406     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2407     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2408     /* Let's assume the audio driver that is used by SDL has two periods. */
2409     if (!isnan(is->audio_clock)) {
2410         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2411         sync_clock_to_slave(&is->extclk, &is->audclk);
2412     }
2413 }
2414
2415 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2416 {
2417     SDL_AudioSpec wanted_spec, spec;
2418     const char *env;
2419     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2420
2421     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2422     if (env) {
2423         wanted_nb_channels = atoi(env);
2424         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2425     }
2426     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2427         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2428         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2429     }
2430     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2431     wanted_spec.freq = wanted_sample_rate;
2432     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2433         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2434         return -1;
2435     }
2436     wanted_spec.format = AUDIO_S16SYS;
2437     wanted_spec.silence = 0;
2438     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2439     wanted_spec.callback = sdl_audio_callback;
2440     wanted_spec.userdata = opaque;
2441     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2442         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2443         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2444         if (!wanted_spec.channels) {
2445             av_log(NULL, AV_LOG_ERROR,
2446                    "No more channel combinations to try, audio open failed\n");
2447             return -1;
2448         }
2449         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2450     }
2451     if (spec.format != AUDIO_S16SYS) {
2452         av_log(NULL, AV_LOG_ERROR,
2453                "SDL advised audio format %d is not supported!\n", spec.format);
2454         return -1;
2455     }
2456     if (spec.channels != wanted_spec.channels) {
2457         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2458         if (!wanted_channel_layout) {
2459             av_log(NULL, AV_LOG_ERROR,
2460                    "SDL advised channel count %d is not supported!\n", spec.channels);
2461             return -1;
2462         }
2463     }
2464
2465     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2466     audio_hw_params->freq = spec.freq;
2467     audio_hw_params->channel_layout = wanted_channel_layout;
2468     audio_hw_params->channels =  spec.channels;
2469     return spec.size;
2470 }
2471
2472 /* open a given stream. Return 0 if OK */
2473 static int stream_component_open(VideoState *is, int stream_index)
2474 {
2475     AVFormatContext *ic = is->ic;
2476     AVCodecContext *avctx;
2477     AVCodec *codec;
2478     const char *forced_codec_name = NULL;
2479     AVDictionary *opts;
2480     AVDictionaryEntry *t = NULL;
2481     int sample_rate, nb_channels;
2482     int64_t channel_layout;
2483     int ret;
2484     int stream_lowres = lowres;
2485
2486     if (stream_index < 0 || stream_index >= ic->nb_streams)
2487         return -1;
2488     avctx = ic->streams[stream_index]->codec;
2489
2490     codec = avcodec_find_decoder(avctx->codec_id);
2491
2492     switch(avctx->codec_type){
2493         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2494         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2495         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2496     }
2497     if (forced_codec_name)
2498         codec = avcodec_find_decoder_by_name(forced_codec_name);
2499     if (!codec) {
2500         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2501                                       "No codec could be found with name '%s'\n", forced_codec_name);
2502         else                   av_log(NULL, AV_LOG_WARNING,
2503                                       "No codec could be found with id %d\n", avctx->codec_id);
2504         return -1;
2505     }
2506
2507     avctx->codec_id = codec->id;
2508     avctx->workaround_bugs   = workaround_bugs;
2509     if(stream_lowres > av_codec_get_max_lowres(codec)){
2510         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2511                 av_codec_get_max_lowres(codec));
2512         stream_lowres = av_codec_get_max_lowres(codec);
2513     }
2514     av_codec_set_lowres(avctx, stream_lowres);
2515     avctx->error_concealment = error_concealment;
2516
2517     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2518     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2519     if(codec->capabilities & CODEC_CAP_DR1)
2520         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2521
2522     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2523     if (!av_dict_get(opts, "threads", NULL, 0))
2524         av_dict_set(&opts, "threads", "auto", 0);
2525     if (stream_lowres)
2526         av_dict_set(&opts, "lowres", av_asprintf("%d", stream_lowres), AV_DICT_DONT_STRDUP_VAL);
2527     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2528         av_dict_set(&opts, "refcounted_frames", "1", 0);
2529     if (avcodec_open2(avctx, codec, &opts) < 0)
2530         return -1;
2531     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2532         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2533         return AVERROR_OPTION_NOT_FOUND;
2534     }
2535
2536     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2537     switch (avctx->codec_type) {
2538     case AVMEDIA_TYPE_AUDIO:
2539 #if CONFIG_AVFILTER
2540         {
2541             AVFilterLink *link;
2542
2543             is->audio_filter_src.freq           = avctx->sample_rate;
2544             is->audio_filter_src.channels       = avctx->channels;
2545             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2546             is->audio_filter_src.fmt            = avctx->sample_fmt;
2547             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2548                 return ret;
2549             link = is->out_audio_filter->inputs[0];
2550             sample_rate    = link->sample_rate;
2551             nb_channels    = link->channels;
2552             channel_layout = link->channel_layout;
2553         }
2554 #else
2555         sample_rate    = avctx->sample_rate;
2556         nb_channels    = avctx->channels;
2557         channel_layout = avctx->channel_layout;
2558 #endif
2559
2560         /* prepare audio output */
2561         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2562             return ret;
2563         is->audio_hw_buf_size = ret;
2564         is->audio_src = is->audio_tgt;
2565         is->audio_buf_size  = 0;
2566         is->audio_buf_index = 0;
2567
2568         /* init averaging filter */
2569         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2570         is->audio_diff_avg_count = 0;
2571         /* since we do not have a precise anough audio fifo fullness,
2572            we correct audio sync only if larger than this threshold */
2573         is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);
2574
2575         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2576         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2577         is->audio_pkt_temp.stream_index = -1;
2578
2579         is->audio_stream = stream_index;
2580         is->audio_st = ic->streams[stream_index];
2581
2582         packet_queue_start(&is->audioq);
2583         SDL_PauseAudio(0);
2584         break;
2585     case AVMEDIA_TYPE_VIDEO:
2586         is->video_stream = stream_index;
2587         is->video_st = ic->streams[stream_index];
2588
2589         packet_queue_start(&is->videoq);
2590         is->video_tid = SDL_CreateThread(video_thread, is);
2591         is->queue_attachments_req = 1;
2592         break;
2593     case AVMEDIA_TYPE_SUBTITLE:
2594         is->subtitle_stream = stream_index;
2595         is->subtitle_st = ic->streams[stream_index];
2596         packet_queue_start(&is->subtitleq);
2597
2598         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2599         break;
2600     default:
2601         break;
2602     }
2603     return 0;
2604 }
2605
2606 static void stream_component_close(VideoState *is, int stream_index)
2607 {
2608     AVFormatContext *ic = is->ic;
2609     AVCodecContext *avctx;
2610
2611     if (stream_index < 0 || stream_index >= ic->nb_streams)
2612         return;
2613     avctx = ic->streams[stream_index]->codec;
2614
2615     switch (avctx->codec_type) {
2616     case AVMEDIA_TYPE_AUDIO:
2617         packet_queue_abort(&is->audioq);
2618
2619         SDL_CloseAudio();
2620
2621         packet_queue_flush(&is->audioq);
2622         av_free_packet(&is->audio_pkt);
2623         swr_free(&is->swr_ctx);
2624         av_freep(&is->audio_buf1);
2625         is->audio_buf1_size = 0;
2626         is->audio_buf = NULL;
2627         av_frame_free(&is->frame);
2628
2629         if (is->rdft) {
2630             av_rdft_end(is->rdft);
2631             av_freep(&is->rdft_data);
2632             is->rdft = NULL;
2633             is->rdft_bits = 0;
2634         }
2635 #if CONFIG_AVFILTER
2636         avfilter_graph_free(&is->agraph);
2637 #endif
2638         break;
2639     case AVMEDIA_TYPE_VIDEO:
2640         packet_queue_abort(&is->videoq);
2641
2642         /* note: we also signal this mutex to make sure we deblock the
2643            video thread in all cases */
2644         SDL_LockMutex(is->pictq_mutex);
2645         SDL_CondSignal(is->pictq_cond);
2646         SDL_UnlockMutex(is->pictq_mutex);
2647
2648         SDL_WaitThread(is->video_tid, NULL);
2649
2650         packet_queue_flush(&is->videoq);
2651         break;
2652     case AVMEDIA_TYPE_SUBTITLE:
2653         packet_queue_abort(&is->subtitleq);
2654
2655         /* note: we also signal this mutex to make sure we deblock the
2656            video thread in all cases */
2657         SDL_LockMutex(is->subpq_mutex);
2658         SDL_CondSignal(is->subpq_cond);
2659         SDL_UnlockMutex(is->subpq_mutex);
2660
2661         SDL_WaitThread(is->subtitle_tid, NULL);
2662
2663         packet_queue_flush(&is->subtitleq);
2664         break;
2665     default:
2666         break;
2667     }
2668
2669     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2670     avcodec_close(avctx);
2671     switch (avctx->codec_type) {
2672     case AVMEDIA_TYPE_AUDIO:
2673         is->audio_st = NULL;
2674         is->audio_stream = -1;
2675         break;
2676     case AVMEDIA_TYPE_VIDEO:
2677         is->video_st = NULL;
2678         is->video_stream = -1;
2679         break;
2680     case AVMEDIA_TYPE_SUBTITLE:
2681         is->subtitle_st = NULL;
2682         is->subtitle_stream = -1;
2683         break;
2684     default:
2685         break;
2686     }
2687 }
2688
2689 static int decode_interrupt_cb(void *ctx)
2690 {
2691     VideoState *is = ctx;
2692     return is->abort_request;
2693 }
2694
2695 static int is_realtime(AVFormatContext *s)
2696 {
2697     if(   !strcmp(s->iformat->name, "rtp")
2698        || !strcmp(s->iformat->name, "rtsp")
2699        || !strcmp(s->iformat->name, "sdp")
2700     )
2701         return 1;
2702
2703     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2704                  || !strncmp(s->filename, "udp:", 4)
2705                 )
2706     )
2707         return 1;
2708     return 0;
2709 }
2710
2711 /* this thread gets the stream from the disk or the network */
2712 static int read_thread(void *arg)
2713 {
2714     VideoState *is = arg;
2715     AVFormatContext *ic = NULL;
2716     int err, i, ret;
2717     int st_index[AVMEDIA_TYPE_NB];
2718     AVPacket pkt1, *pkt = &pkt1;
2719     int eof = 0;
2720     int64_t stream_start_time;
2721     int pkt_in_play_range = 0;
2722     AVDictionaryEntry *t;
2723     AVDictionary **opts;
2724     int orig_nb_streams;
2725     SDL_mutex *wait_mutex = SDL_CreateMutex();
2726
2727     memset(st_index, -1, sizeof(st_index));
2728     is->last_video_stream = is->video_stream = -1;
2729     is->last_audio_stream = is->audio_stream = -1;
2730     is->last_subtitle_stream = is->subtitle_stream = -1;
2731
2732     ic = avformat_alloc_context();
2733     ic->interrupt_callback.callback = decode_interrupt_cb;
2734     ic->interrupt_callback.opaque = is;
2735     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2736     if (err < 0) {
2737         print_error(is->filename, err);
2738         ret = -1;
2739         goto fail;
2740     }
2741     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2742         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2743         ret = AVERROR_OPTION_NOT_FOUND;
2744         goto fail;
2745     }
2746     is->ic = ic;
2747
2748     if (genpts)
2749         ic->flags |= AVFMT_FLAG_GENPTS;
2750
2751     opts = setup_find_stream_info_opts(ic, codec_opts);
2752     orig_nb_streams = ic->nb_streams;
2753
2754     err = avformat_find_stream_info(ic, opts);
2755     if (err < 0) {
2756         av_log(NULL, AV_LOG_WARNING,
2757                "%s: could not find codec parameters\n", is->filename);
2758         ret = -1;
2759         goto fail;
2760     }
2761     for (i = 0; i < orig_nb_streams; i++)
2762         av_dict_free(&opts[i]);
2763     av_freep(&opts);
2764
2765     if (ic->pb)
2766         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2767
2768     if (seek_by_bytes < 0)
2769         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2770
2771     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2772
2773     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2774         window_title = av_asprintf("%s - %s", t->value, input_filename);
2775
2776     /* if seeking requested, we execute it */
2777     if (start_time != AV_NOPTS_VALUE) {
2778         int64_t timestamp;
2779
2780         timestamp = start_time;
2781         /* add the stream start time */
2782         if (ic->start_time != AV_NOPTS_VALUE)
2783             timestamp += ic->start_time;
2784         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2785         if (ret < 0) {
2786             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2787                     is->filename, (double)timestamp / AV_TIME_BASE);
2788         }
2789     }
2790
2791     is->realtime = is_realtime(ic);
2792
2793     for (i = 0; i < ic->nb_streams; i++)
2794         ic->streams[i]->discard = AVDISCARD_ALL;
2795     if (!video_disable)
2796         st_index[AVMEDIA_TYPE_VIDEO] =
2797             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2798                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2799     if (!audio_disable)
2800         st_index[AVMEDIA_TYPE_AUDIO] =
2801             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2802                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2803                                 st_index[AVMEDIA_TYPE_VIDEO],
2804                                 NULL, 0);
2805     if (!video_disable && !subtitle_disable)
2806         st_index[AVMEDIA_TYPE_SUBTITLE] =
2807             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2808                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2809                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2810                                  st_index[AVMEDIA_TYPE_AUDIO] :
2811                                  st_index[AVMEDIA_TYPE_VIDEO]),
2812                                 NULL, 0);
2813     if (show_status) {
2814         av_dump_format(ic, 0, is->filename, 0);
2815     }
2816
2817     is->show_mode = show_mode;
2818
2819     /* open the streams */
2820     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2821         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2822     }
2823
2824     ret = -1;
2825     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2826         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2827     }
2828     if (is->show_mode == SHOW_MODE_NONE)
2829         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2830
2831     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2832         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2833     }
2834
2835     if (is->video_stream < 0 && is->audio_stream < 0) {
2836         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2837                is->filename);
2838         ret = -1;
2839         goto fail;
2840     }
2841
2842     if (infinite_buffer < 0 && is->realtime)
2843         infinite_buffer = 1;
2844
2845     for (;;) {
2846         if (is->abort_request)
2847             break;
2848         if (is->paused != is->last_paused) {
2849             is->last_paused = is->paused;
2850             if (is->paused)
2851                 is->read_pause_return = av_read_pause(ic);
2852             else
2853                 av_read_play(ic);
2854         }
2855 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2856         if (is->paused &&
2857                 (!strcmp(ic->iformat->name, "rtsp") ||
2858                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2859             /* wait 10 ms to avoid trying to get another packet */
2860             /* XXX: horrible */
2861             SDL_Delay(10);
2862             continue;
2863         }
2864 #endif
2865         if (is->seek_req) {
2866             int64_t seek_target = is->seek_pos;
2867             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2868             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2869 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2870 //      of the seek_pos/seek_rel variables
2871
2872             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2873             if (ret < 0) {
2874                 av_log(NULL, AV_LOG_ERROR,
2875                        "%s: error while seeking\n", is->ic->filename);
2876             } else {
2877                 if (is->audio_stream >= 0) {
2878                     packet_queue_flush(&is->audioq);
2879                     packet_queue_put(&is->audioq, &flush_pkt);
2880                 }
2881                 if (is->subtitle_stream >= 0) {
2882                     packet_queue_flush(&is->subtitleq);
2883                     packet_queue_put(&is->subtitleq, &flush_pkt);
2884                 }
2885                 if (is->video_stream >= 0) {
2886                     packet_queue_flush(&is->videoq);
2887                     packet_queue_put(&is->videoq, &flush_pkt);
2888                 }
2889                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2890                    set_clock(&is->extclk, NAN, 0);
2891                 } else {
2892                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2893                 }
2894             }
2895             is->seek_req = 0;
2896             is->queue_attachments_req = 1;
2897             eof = 0;
2898             if (is->paused)
2899                 step_to_next_frame(is);
2900         }
2901         if (is->queue_attachments_req) {
2902             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2903                 AVPacket copy;
2904                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
2905                     goto fail;
2906                 packet_queue_put(&is->videoq, &copy);
2907                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2908             }
2909             is->queue_attachments_req = 0;
2910         }
2911
2912         /* if the queue are full, no need to read more */
2913         if (infinite_buffer<1 &&
2914               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2915             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2916                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
2917                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2918                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
2919             /* wait 10 ms */
2920             SDL_LockMutex(wait_mutex);
2921             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2922             SDL_UnlockMutex(wait_mutex);
2923             continue;
2924         }
2925         if (!is->paused &&
2926             (!is->audio_st || is->audio_finished == is->audioq.serial) &&
2927             (!is->video_st || (is->video_finished == is->videoq.serial && is->pictq_size == 0))) {
2928             if (loop != 1 && (!loop || --loop)) {
2929                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2930             } else if (autoexit) {
2931                 ret = AVERROR_EOF;
2932                 goto fail;
2933             }
2934         }
2935         if (eof) {
2936             if (is->video_stream >= 0)
2937                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2938             if (is->audio_stream >= 0)
2939                 packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
2940             SDL_Delay(10);
2941             eof=0;
2942             continue;
2943         }
2944         ret = av_read_frame(ic, pkt);
2945         if (ret < 0) {
2946             if (ret == AVERROR_EOF || url_feof(ic->pb))
2947                 eof = 1;
2948             if (ic->pb && ic->pb->error)
2949                 break;
2950             SDL_LockMutex(wait_mutex);
2951             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2952             SDL_UnlockMutex(wait_mutex);
2953             continue;
2954         }
2955         /* check if packet is in play range specified by user, then queue, otherwise discard */
2956         stream_start_time = ic->streams[pkt->stream_index]->start_time;
2957         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2958                 (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
2959                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2960                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2961                 <= ((double)duration / 1000000);
2962         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2963             packet_queue_put(&is->audioq, pkt);
2964         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
2965                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
2966             packet_queue_put(&is->videoq, pkt);
2967         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2968             packet_queue_put(&is->subtitleq, pkt);
2969         } else {
2970             av_free_packet(pkt);
2971         }
2972     }
2973     /* wait until the end */
2974     while (!is->abort_request) {
2975         SDL_Delay(100);
2976     }
2977
2978     ret = 0;
2979  fail:
2980     /* close each stream */
2981     if (is->audio_stream >= 0)
2982         stream_component_close(is, is->audio_stream);
2983     if (is->video_stream >= 0)
2984         stream_component_close(is, is->video_stream);
2985     if (is->subtitle_stream >= 0)
2986         stream_component_close(is, is->subtitle_stream);
2987     if (is->ic) {
2988         avformat_close_input(&is->ic);
2989     }
2990
2991     if (ret != 0) {
2992         SDL_Event event;
2993
2994         event.type = FF_QUIT_EVENT;
2995         event.user.data1 = is;
2996         SDL_PushEvent(&event);
2997     }
2998     SDL_DestroyMutex(wait_mutex);
2999     return 0;
3000 }
3001
3002 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3003 {
3004     VideoState *is;
3005
3006     is = av_mallocz(sizeof(VideoState));
3007     if (!is)
3008         return NULL;
3009     av_strlcpy(is->filename, filename, sizeof(is->filename));
3010     is->iformat = iformat;
3011     is->ytop    = 0;
3012     is->xleft   = 0;
3013
3014     /* start video display */
3015     is->pictq_mutex = SDL_CreateMutex();
3016     is->pictq_cond  = SDL_CreateCond();
3017
3018     is->subpq_mutex = SDL_CreateMutex();
3019     is->subpq_cond  = SDL_CreateCond();
3020
3021     packet_queue_init(&is->videoq);
3022     packet_queue_init(&is->audioq);
3023     packet_queue_init(&is->subtitleq);
3024
3025     is->continue_read_thread = SDL_CreateCond();
3026
3027     init_clock(&is->vidclk, &is->videoq.serial);
3028     init_clock(&is->audclk, &is->audioq.serial);
3029     init_clock(&is->extclk, &is->extclk.serial);
3030     is->audio_clock_serial = -1;
3031     is->audio_last_serial = -1;
3032     is->av_sync_type = av_sync_type;
3033     is->read_tid     = SDL_CreateThread(read_thread, is);
3034     if (!is->read_tid) {
3035         av_free(is);
3036         return NULL;
3037     }
3038     return is;
3039 }
3040
3041 static void stream_cycle_channel(VideoState *is, int codec_type)
3042 {
3043     AVFormatContext *ic = is->ic;
3044     int start_index, stream_index;
3045     int old_index;
3046     AVStream *st;
3047     AVProgram *p = NULL;
3048     int nb_streams = is->ic->nb_streams;
3049
3050     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3051         start_index = is->last_video_stream;
3052         old_index = is->video_stream;
3053     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3054         start_index = is->last_audio_stream;
3055         old_index = is->audio_stream;
3056     } else {
3057         start_index = is->last_subtitle_stream;
3058         old_index = is->subtitle_stream;
3059     }
3060     stream_index = start_index;
3061
3062     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3063         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3064         if (p) {
3065             nb_streams = p->nb_stream_indexes;
3066             for (start_index = 0; start_index < nb_streams; start_index++)
3067                 if (p->stream_index[start_index] == stream_index)
3068                     break;
3069             if (start_index == nb_streams)
3070                 start_index = -1;
3071             stream_index = start_index;
3072         }
3073     }
3074
3075     for (;;) {
3076         if (++stream_index >= nb_streams)
3077         {
3078             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3079             {
3080                 stream_index = -1;
3081                 is->last_subtitle_stream = -1;
3082                 goto the_end;
3083             }
3084             if (start_index == -1)
3085                 return;
3086             stream_index = 0;
3087         }
3088         if (stream_index == start_index)
3089             return;
3090         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3091         if (st->codec->codec_type == codec_type) {
3092             /* check that parameters are OK */
3093             switch (codec_type) {
3094             case AVMEDIA_TYPE_AUDIO:
3095                 if (st->codec->sample_rate != 0 &&
3096                     st->codec->channels != 0)
3097                     goto the_end;
3098                 break;
3099             case AVMEDIA_TYPE_VIDEO:
3100             case AVMEDIA_TYPE_SUBTITLE:
3101                 goto the_end;
3102             default:
3103                 break;
3104             }
3105         }
3106     }
3107  the_end:
3108     if (p && stream_index != -1)
3109         stream_index = p->stream_index[stream_index];
3110     stream_component_close(is, old_index);
3111     stream_component_open(is, stream_index);
3112 }
3113
3114
3115 static void toggle_full_screen(VideoState *is)
3116 {
3117 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3118     /* OS X needs to reallocate the SDL overlays */
3119     int i;
3120     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3121         is->pictq[i].reallocate = 1;
3122 #endif
3123     is_full_screen = !is_full_screen;
3124     video_open(is, 1, NULL);
3125 }
3126
3127 static void toggle_audio_display(VideoState *is)
3128 {
3129     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3130     int next = is->show_mode;
3131     do {
3132         next = (next + 1) % SHOW_MODE_NB;
3133     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3134     if (is->show_mode != next) {
3135         fill_rectangle(screen,
3136                     is->xleft, is->ytop, is->width, is->height,
3137                     bgcolor, 1);
3138         is->force_refresh = 1;
3139         is->show_mode = next;
3140     }
3141 }
3142
3143 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3144     double remaining_time = 0.0;
3145     SDL_PumpEvents();
3146     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3147         if (!cursor_hidden && av_gettime() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3148             SDL_ShowCursor(0);
3149             cursor_hidden = 1;
3150         }
3151         if (remaining_time > 0.0)
3152             av_usleep((int64_t)(remaining_time * 1000000.0));
3153         remaining_time = REFRESH_RATE;
3154         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3155             video_refresh(is, &remaining_time);
3156         SDL_PumpEvents();
3157     }
3158 }
3159
3160 /* handle an event sent by the GUI */
3161 static void event_loop(VideoState *cur_stream)
3162 {
3163     SDL_Event event;
3164     double incr, pos, frac;
3165
3166     for (;;) {
3167         double x;
3168         refresh_loop_wait_event(cur_stream, &event);
3169         switch (event.type) {
3170         case SDL_KEYDOWN:
3171             if (exit_on_keydown) {
3172                 do_exit(cur_stream);
3173                 break;
3174             }
3175             switch (event.key.keysym.sym) {
3176             case SDLK_ESCAPE:
3177             case SDLK_q:
3178                 do_exit(cur_stream);
3179                 break;
3180             case SDLK_f:
3181                 toggle_full_screen(cur_stream);
3182                 cur_stream->force_refresh = 1;
3183                 break;
3184             case SDLK_p:
3185             case SDLK_SPACE:
3186                 toggle_pause(cur_stream);
3187                 break;
3188             case SDLK_s: // S: Step to next frame
3189                 step_to_next_frame(cur_stream);
3190                 break;
3191             case SDLK_a:
3192                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3193                 break;
3194             case SDLK_v:
3195                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3196                 break;
3197             case SDLK_c:
3198                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3199                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3200                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3201                 break;
3202             case SDLK_t:
3203                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3204                 break;
3205             case SDLK_w:
3206                 toggle_audio_display(cur_stream);
3207                 break;
3208             case SDLK_PAGEUP:
3209                 incr = 600.0;
3210                 goto do_seek;
3211             case SDLK_PAGEDOWN:
3212                 incr = -600.0;
3213                 goto do_seek;
3214             case SDLK_LEFT:
3215                 incr = -10.0;
3216                 goto do_seek;
3217             case SDLK_RIGHT:
3218                 incr = 10.0;
3219                 goto do_seek;
3220             case SDLK_UP:
3221                 incr = 60.0;
3222                 goto do_seek;
3223             case SDLK_DOWN:
3224                 incr = -60.0;
3225             do_seek:
3226                     if (seek_by_bytes) {
3227                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
3228                             pos = cur_stream->video_current_pos;
3229                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
3230                             pos = cur_stream->audio_pkt.pos;
3231                         } else
3232                             pos = avio_tell(cur_stream->ic->pb);
3233                         if (cur_stream->ic->bit_rate)
3234                             incr *= cur_stream->ic->bit_rate / 8.0;
3235                         else
3236                             incr *= 180000.0;
3237                         pos += incr;
3238                         stream_seek(cur_stream, pos, incr, 1);
3239                     } else {
3240                         pos = get_master_clock(cur_stream);
3241                         if (isnan(pos))
3242                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3243                         pos += incr;
3244                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3245                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3246                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3247                     }
3248                 break;
3249             default:
3250                 break;
3251             }
3252             break;
3253         case SDL_VIDEOEXPOSE:
3254             cur_stream->force_refresh = 1;
3255             break;
3256         case SDL_MOUSEBUTTONDOWN:
3257             if (exit_on_mousedown) {
3258                 do_exit(cur_stream);
3259                 break;
3260             }
3261         case SDL_MOUSEMOTION:
3262             if (cursor_hidden) {
3263                 SDL_ShowCursor(1);
3264                 cursor_hidden = 0;
3265             }
3266             cursor_last_shown = av_gettime();
3267             if (event.type == SDL_MOUSEBUTTONDOWN) {
3268                 x = event.button.x;
3269             } else {
3270                 if (event.motion.state != SDL_PRESSED)
3271                     break;
3272                 x = event.motion.x;
3273             }
3274                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3275                     uint64_t size =  avio_size(cur_stream->ic->pb);
3276                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3277                 } else {
3278                     int64_t ts;
3279                     int ns, hh, mm, ss;
3280                     int tns, thh, tmm, tss;
3281                     tns  = cur_stream->ic->duration / 1000000LL;
3282                     thh  = tns / 3600;
3283                     tmm  = (tns % 3600) / 60;
3284                     tss  = (tns % 60);
3285                     frac = x / cur_stream->width;
3286                     ns   = frac * tns;
3287                     hh   = ns / 3600;
3288                     mm   = (ns % 3600) / 60;
3289                     ss   = (ns % 60);
3290                     av_log(NULL, AV_LOG_INFO,
3291                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3292                             hh, mm, ss, thh, tmm, tss);
3293                     ts = frac * cur_stream->ic->duration;
3294                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3295                         ts += cur_stream->ic->start_time;
3296                     stream_seek(cur_stream, ts, 0, 0);
3297                 }
3298             break;
3299         case SDL_VIDEORESIZE:
3300                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3301                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
3302                 if (!screen) {
3303                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3304                     do_exit(cur_stream);
3305                 }
3306                 screen_width  = cur_stream->width  = screen->w;
3307                 screen_height = cur_stream->height = screen->h;
3308                 cur_stream->force_refresh = 1;
3309             break;
3310         case SDL_QUIT:
3311         case FF_QUIT_EVENT:
3312             do_exit(cur_stream);
3313             break;
3314         case FF_ALLOC_EVENT:
3315             alloc_picture(event.user.data1);
3316             break;
3317         default:
3318             break;
3319         }
3320     }
3321 }
3322
3323 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3324 {
3325     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3326     return opt_default(NULL, "video_size", arg);
3327 }
3328
3329 static int opt_width(void *optctx, const char *opt, const char *arg)
3330 {
3331     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3332     return 0;
3333 }
3334
3335 static int opt_height(void *optctx, const char *opt, const char *arg)
3336 {
3337     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3338     return 0;
3339 }
3340
3341 static int opt_format(void *optctx, const char *opt, const char *arg)
3342 {
3343     file_iformat = av_find_input_format(arg);
3344     if (!file_iformat) {
3345         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3346         return AVERROR(EINVAL);
3347     }
3348     return 0;
3349 }
3350
3351 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3352 {
3353     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3354     return opt_default(NULL, "pixel_format", arg);
3355 }
3356
3357 static int opt_sync(void *optctx, const char *opt, const char *arg)
3358 {
3359     if (!strcmp(arg, "audio"))
3360         av_sync_type = AV_SYNC_AUDIO_MASTER;
3361     else if (!strcmp(arg, "video"))
3362         av_sync_type = AV_SYNC_VIDEO_MASTER;
3363     else if (!strcmp(arg, "ext"))
3364         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3365     else {
3366         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3367         exit(1);
3368     }
3369     return 0;
3370 }
3371
3372 static int opt_seek(void *optctx, const char *opt, const char *arg)
3373 {
3374     start_time = parse_time_or_die(opt, arg, 1);
3375     return 0;
3376 }
3377
3378 static int opt_duration(void *optctx, const char *opt, const char *arg)
3379 {
3380     duration = parse_time_or_die(opt, arg, 1);
3381     return 0;
3382 }
3383
3384 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3385 {
3386     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3387                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3388                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3389                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3390     return 0;
3391 }
3392
3393 static void opt_input_file(void *optctx, const char *filename)
3394 {
3395     if (input_filename) {
3396         av_log(NULL, AV_LOG_FATAL,
3397                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3398                 filename, input_filename);
3399         exit(1);
3400     }
3401     if (!strcmp(filename, "-"))
3402         filename = "pipe:";
3403     input_filename = filename;
3404 }
3405
3406 static int opt_codec(void *optctx, const char *opt, const char *arg)
3407 {
3408    const char *spec = strchr(opt, ':');
3409    if (!spec) {
3410        av_log(NULL, AV_LOG_ERROR,
3411               "No media specifier was specified in '%s' in option '%s'\n",
3412                arg, opt);
3413        return AVERROR(EINVAL);
3414    }
3415    spec++;
3416    switch (spec[0]) {
3417    case 'a' :    audio_codec_name = arg; break;
3418    case 's' : subtitle_codec_name = arg; break;
3419    case 'v' :    video_codec_name = arg; break;
3420    default:
3421        av_log(NULL, AV_LOG_ERROR,
3422               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3423        return AVERROR(EINVAL);
3424    }
3425    return 0;
3426 }
3427
3428 static int dummy;
3429
3430 static const OptionDef options[] = {
3431 #include "cmdutils_common_opts.h"
3432     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3433     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3434     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3435     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3436     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3437     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3438     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3439     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
3440     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
3441     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
3442     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3443     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3444     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3445     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3446     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3447     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3448     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3449     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
3450     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimization