ffplay: do not wait for flushing the picture queue on flush packet
[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 <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/colorspace.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avcodec.h"
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersink.h"
54 # include "libavfilter/buffersrc.h"
55 #endif
56
57 #include <SDL.h>
58 #include <SDL_thread.h>
59
60 #include "cmdutils.h"
61
62 #include <assert.h>
63
64 const char program_name[] = "ffplay";
65 const int program_birth_year = 2003;
66
67 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
68 #define MIN_FRAMES 5
69
70 /* SDL audio buffer size, in samples. Should be small to have precise
71    A/V sync as SDL does not have hardware buffer fullness info. */
72 #define SDL_AUDIO_BUFFER_SIZE 1024
73
74 /* no AV sync correction is done if below the minimum AV sync threshold */
75 #define AV_SYNC_THRESHOLD_MIN 0.01
76 /* AV sync correction is done if above the maximum AV sync threshold */
77 #define AV_SYNC_THRESHOLD_MAX 0.1
78 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
79 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
80 /* no AV correction is done if too big error */
81 #define AV_NOSYNC_THRESHOLD 10.0
82
83 /* maximum audio speed change to get correct sync */
84 #define SAMPLE_CORRECTION_PERCENT_MAX 10
85
86 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
87 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
88 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
89 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
90
91 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
92 #define AUDIO_DIFF_AVG_NB   20
93
94 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
95 #define REFRESH_RATE 0.01
96
97 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
98 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
99 #define SAMPLE_ARRAY_SIZE (8 * 65536)
100
101 #define CURSOR_HIDE_DELAY 1000000
102
103 static int64_t sws_flags = SWS_BICUBIC;
104
105 typedef struct MyAVPacketList {
106     AVPacket pkt;
107     struct MyAVPacketList *next;
108     int serial;
109 } MyAVPacketList;
110
111 typedef struct PacketQueue {
112     MyAVPacketList *first_pkt, *last_pkt;
113     int nb_packets;
114     int size;
115     int abort_request;
116     int serial;
117     SDL_mutex *mutex;
118     SDL_cond *cond;
119 } PacketQueue;
120
121 #define VIDEO_PICTURE_QUEUE_SIZE 3
122 #define SUBPICTURE_QUEUE_SIZE 4
123
124 typedef struct VideoPicture {
125     double pts;             // presentation timestamp for this picture
126     double duration;        // estimated duration based on frame rate
127     int64_t pos;            // byte position in file
128     SDL_Overlay *bmp;
129     int width, height; /* source height & width */
130     int allocated;
131     int reallocate;
132     int serial;
133
134     AVRational sar;
135 } VideoPicture;
136
137 typedef struct SubPicture {
138     double pts; /* presentation time stamp for this picture */
139     AVSubtitle sub;
140     int serial;
141 } SubPicture;
142
143 typedef struct AudioParams {
144     int freq;
145     int channels;
146     int64_t channel_layout;
147     enum AVSampleFormat fmt;
148 } AudioParams;
149
150 typedef struct Clock {
151     double pts;           /* clock base */
152     double pts_drift;     /* clock base minus time at which we updated the clock */
153     double last_updated;
154     double speed;
155     int serial;           /* clock is based on a packet with this serial */
156     int paused;
157     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
158 } Clock;
159
160 enum {
161     AV_SYNC_AUDIO_MASTER, /* default choice */
162     AV_SYNC_VIDEO_MASTER,
163     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
164 };
165
166 typedef struct VideoState {
167     SDL_Thread *read_tid;
168     SDL_Thread *video_tid;
169     AVInputFormat *iformat;
170     int no_background;
171     int abort_request;
172     int force_refresh;
173     int paused;
174     int last_paused;
175     int queue_attachments_req;
176     int seek_req;
177     int seek_flags;
178     int64_t seek_pos;
179     int64_t seek_rel;
180     int read_pause_return;
181     AVFormatContext *ic;
182     int realtime;
183     int audio_finished;
184     int video_finished;
185
186     Clock audclk;
187     Clock vidclk;
188     Clock extclk;
189
190     int audio_stream;
191
192     int av_sync_type;
193
194     double audio_clock;
195     int audio_clock_serial;
196     double audio_diff_cum; /* used for AV difference average computation */
197     double audio_diff_avg_coef;
198     double audio_diff_threshold;
199     int audio_diff_avg_count;
200     AVStream *audio_st;
201     PacketQueue audioq;
202     int audio_hw_buf_size;
203     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
204     uint8_t *audio_buf;
205     uint8_t *audio_buf1;
206     unsigned int audio_buf_size; /* in bytes */
207     unsigned int audio_buf1_size;
208     int audio_buf_index; /* in bytes */
209     int audio_write_buf_size;
210     int audio_buf_frames_pending;
211     AVPacket audio_pkt_temp;
212     AVPacket audio_pkt;
213     int audio_pkt_temp_serial;
214     int audio_last_serial;
215     struct AudioParams audio_src;
216 #if CONFIG_AVFILTER
217     struct AudioParams audio_filter_src;
218 #endif
219     struct AudioParams audio_tgt;
220     struct SwrContext *swr_ctx;
221     int frame_drops_early;
222     int frame_drops_late;
223     AVFrame *frame;
224     int64_t audio_frame_next_pts;
225
226     enum ShowMode {
227         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
228     } show_mode;
229     int16_t sample_array[SAMPLE_ARRAY_SIZE];
230     int sample_array_index;
231     int last_i_start;
232     RDFTContext *rdft;
233     int rdft_bits;
234     FFTSample *rdft_data;
235     int xpos;
236     double last_vis_time;
237
238     SDL_Thread *subtitle_tid;
239     int subtitle_stream;
240     AVStream *subtitle_st;
241     PacketQueue subtitleq;
242     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
243     int subpq_size, subpq_rindex, subpq_windex;
244     SDL_mutex *subpq_mutex;
245     SDL_cond *subpq_cond;
246
247     double frame_timer;
248     double frame_last_returned_time;
249     double frame_last_filter_delay;
250     int video_stream;
251     AVStream *video_st;
252     PacketQueue videoq;
253     int64_t video_current_pos;      // current displayed file pos
254     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
255     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
256     int pictq_size, pictq_rindex, pictq_windex;
257     SDL_mutex *pictq_mutex;
258     SDL_cond *pictq_cond;
259 #if !CONFIG_AVFILTER
260     struct SwsContext *img_convert_ctx;
261 #endif
262     SDL_Rect last_display_rect;
263
264     char filename[1024];
265     int width, height, xleft, ytop;
266     int step;
267
268 #if CONFIG_AVFILTER
269     AVFilterContext *in_video_filter;   // the first filter in the video chain
270     AVFilterContext *out_video_filter;  // the last filter in the video chain
271     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
272     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
273     AVFilterGraph *agraph;              // audio filter graph
274 #endif
275
276     int last_video_stream, last_audio_stream, last_subtitle_stream;
277
278     SDL_cond *continue_read_thread;
279 } VideoState;
280
281 /* options specified by the user */
282 static AVInputFormat *file_iformat;
283 static const char *input_filename;
284 static const char *window_title;
285 static int fs_screen_width;
286 static int fs_screen_height;
287 static int default_width  = 640;
288 static int default_height = 480;
289 static int screen_width  = 0;
290 static int screen_height = 0;
291 static int audio_disable;
292 static int video_disable;
293 static int subtitle_disable;
294 static int wanted_stream[AVMEDIA_TYPE_NB] = {
295     [AVMEDIA_TYPE_AUDIO]    = -1,
296     [AVMEDIA_TYPE_VIDEO]    = -1,
297     [AVMEDIA_TYPE_SUBTITLE] = -1,
298 };
299 static int seek_by_bytes = -1;
300 static int display_disable;
301 static int show_status = 1;
302 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
303 static int64_t start_time = AV_NOPTS_VALUE;
304 static int64_t duration = AV_NOPTS_VALUE;
305 static int workaround_bugs = 1;
306 static int fast = 0;
307 static int genpts = 0;
308 static int lowres = 0;
309 static int error_concealment = 3;
310 static int decoder_reorder_pts = -1;
311 static int autoexit;
312 static int exit_on_keydown;
313 static int exit_on_mousedown;
314 static int loop = 1;
315 static int framedrop = -1;
316 static int infinite_buffer = -1;
317 static enum ShowMode show_mode = SHOW_MODE_NONE;
318 static const char *audio_codec_name;
319 static const char *subtitle_codec_name;
320 static const char *video_codec_name;
321 double rdftspeed = 0.02;
322 static int64_t cursor_last_shown;
323 static int cursor_hidden = 0;
324 #if CONFIG_AVFILTER
325 static char *vfilters = NULL;
326 static char *afilters = NULL;
327 #endif
328
329 /* current context */
330 static int is_full_screen;
331 static int64_t audio_callback_time;
332
333 static AVPacket flush_pkt;
334
335 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
336 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
337
338 static SDL_Surface *screen;
339
340 static inline
341 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
342                    enum AVSampleFormat fmt2, int64_t channel_count2)
343 {
344     /* If channel count == 1, planar and non-planar formats are the same */
345     if (channel_count1 == 1 && channel_count2 == 1)
346         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
347     else
348         return channel_count1 != channel_count2 || fmt1 != fmt2;
349 }
350
351 static inline
352 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
353 {
354     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
355         return channel_layout;
356     else
357         return 0;
358 }
359
360 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
361
362 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
363 {
364     MyAVPacketList *pkt1;
365
366     if (q->abort_request)
367        return -1;
368
369     pkt1 = av_malloc(sizeof(MyAVPacketList));
370     if (!pkt1)
371         return -1;
372     pkt1->pkt = *pkt;
373     pkt1->next = NULL;
374     if (pkt == &flush_pkt)
375         q->serial++;
376     pkt1->serial = q->serial;
377
378     if (!q->last_pkt)
379         q->first_pkt = pkt1;
380     else
381         q->last_pkt->next = pkt1;
382     q->last_pkt = pkt1;
383     q->nb_packets++;
384     q->size += pkt1->pkt.size + sizeof(*pkt1);
385     /* XXX: should duplicate packet data in DV case */
386     SDL_CondSignal(q->cond);
387     return 0;
388 }
389
390 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
391 {
392     int ret;
393
394     /* duplicate the packet */
395     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
396         return -1;
397
398     SDL_LockMutex(q->mutex);
399     ret = packet_queue_put_private(q, pkt);
400     SDL_UnlockMutex(q->mutex);
401
402     if (pkt != &flush_pkt && ret < 0)
403         av_free_packet(pkt);
404
405     return ret;
406 }
407
408 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
409 {
410     AVPacket pkt1, *pkt = &pkt1;
411     av_init_packet(pkt);
412     pkt->data = NULL;
413     pkt->size = 0;
414     pkt->stream_index = stream_index;
415     return packet_queue_put(q, pkt);
416 }
417
418 /* packet queue handling */
419 static void packet_queue_init(PacketQueue *q)
420 {
421     memset(q, 0, sizeof(PacketQueue));
422     q->mutex = SDL_CreateMutex();
423     q->cond = SDL_CreateCond();
424     q->abort_request = 1;
425 }
426
427 static void packet_queue_flush(PacketQueue *q)
428 {
429     MyAVPacketList *pkt, *pkt1;
430
431     SDL_LockMutex(q->mutex);
432     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
433         pkt1 = pkt->next;
434         av_free_packet(&pkt->pkt);
435         av_freep(&pkt);
436     }
437     q->last_pkt = NULL;
438     q->first_pkt = NULL;
439     q->nb_packets = 0;
440     q->size = 0;
441     SDL_UnlockMutex(q->mutex);
442 }
443
444 static void packet_queue_destroy(PacketQueue *q)
445 {
446     packet_queue_flush(q);
447     SDL_DestroyMutex(q->mutex);
448     SDL_DestroyCond(q->cond);
449 }
450
451 static void packet_queue_abort(PacketQueue *q)
452 {
453     SDL_LockMutex(q->mutex);
454
455     q->abort_request = 1;
456
457     SDL_CondSignal(q->cond);
458
459     SDL_UnlockMutex(q->mutex);
460 }
461
462 static void packet_queue_start(PacketQueue *q)
463 {
464     SDL_LockMutex(q->mutex);
465     q->abort_request = 0;
466     packet_queue_put_private(q, &flush_pkt);
467     SDL_UnlockMutex(q->mutex);
468 }
469
470 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
471 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
472 {
473     MyAVPacketList *pkt1;
474     int ret;
475
476     SDL_LockMutex(q->mutex);
477
478     for (;;) {
479         if (q->abort_request) {
480             ret = -1;
481             break;
482         }
483
484         pkt1 = q->first_pkt;
485         if (pkt1) {
486             q->first_pkt = pkt1->next;
487             if (!q->first_pkt)
488                 q->last_pkt = NULL;
489             q->nb_packets--;
490             q->size -= pkt1->pkt.size + sizeof(*pkt1);
491             *pkt = pkt1->pkt;
492             if (serial)
493                 *serial = pkt1->serial;
494             av_free(pkt1);
495             ret = 1;
496             break;
497         } else if (!block) {
498             ret = 0;
499             break;
500         } else {
501             SDL_CondWait(q->cond, q->mutex);
502         }
503     }
504     SDL_UnlockMutex(q->mutex);
505     return ret;
506 }
507
508 static inline void fill_rectangle(SDL_Surface *screen,
509                                   int x, int y, int w, int h, int color, int update)
510 {
511     SDL_Rect rect;
512     rect.x = x;
513     rect.y = y;
514     rect.w = w;
515     rect.h = h;
516     SDL_FillRect(screen, &rect, color);
517     if (update && w > 0 && h > 0)
518         SDL_UpdateRect(screen, x, y, w, h);
519 }
520
521 /* draw only the border of a rectangle */
522 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
523 {
524     int w1, w2, h1, h2;
525
526     /* fill the background */
527     w1 = x;
528     if (w1 < 0)
529         w1 = 0;
530     w2 = width - (x + w);
531     if (w2 < 0)
532         w2 = 0;
533     h1 = y;
534     if (h1 < 0)
535         h1 = 0;
536     h2 = height - (y + h);
537     if (h2 < 0)
538         h2 = 0;
539     fill_rectangle(screen,
540                    xleft, ytop,
541                    w1, height,
542                    color, update);
543     fill_rectangle(screen,
544                    xleft + width - w2, ytop,
545                    w2, height,
546                    color, update);
547     fill_rectangle(screen,
548                    xleft + w1, ytop,
549                    width - w1 - w2, h1,
550                    color, update);
551     fill_rectangle(screen,
552                    xleft + w1, ytop + height - h2,
553                    width - w1 - w2, h2,
554                    color, update);
555 }
556
557 #define ALPHA_BLEND(a, oldp, newp, s)\
558 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
559
560 #define RGBA_IN(r, g, b, a, s)\
561 {\
562     unsigned int v = ((const uint32_t *)(s))[0];\
563     a = (v >> 24) & 0xff;\
564     r = (v >> 16) & 0xff;\
565     g = (v >> 8) & 0xff;\
566     b = v & 0xff;\
567 }
568
569 #define YUVA_IN(y, u, v, a, s, pal)\
570 {\
571     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
572     a = (val >> 24) & 0xff;\
573     y = (val >> 16) & 0xff;\
574     u = (val >> 8) & 0xff;\
575     v = val & 0xff;\
576 }
577
578 #define YUVA_OUT(d, y, u, v, a)\
579 {\
580     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
581 }
582
583
584 #define BPP 1
585
586 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
587 {
588     int wrap, wrap3, width2, skip2;
589     int y, u, v, a, u1, v1, a1, w, h;
590     uint8_t *lum, *cb, *cr;
591     const uint8_t *p;
592     const uint32_t *pal;
593     int dstx, dsty, dstw, dsth;
594
595     dstw = av_clip(rect->w, 0, imgw);
596     dsth = av_clip(rect->h, 0, imgh);
597     dstx = av_clip(rect->x, 0, imgw - dstw);
598     dsty = av_clip(rect->y, 0, imgh - dsth);
599     lum = dst->data[0] + dsty * dst->linesize[0];
600     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
601     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
602
603     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
604     skip2 = dstx >> 1;
605     wrap = dst->linesize[0];
606     wrap3 = rect->pict.linesize[0];
607     p = rect->pict.data[0];
608     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
609
610     if (dsty & 1) {
611         lum += dstx;
612         cb += skip2;
613         cr += skip2;
614
615         if (dstx & 1) {
616             YUVA_IN(y, u, v, a, p, pal);
617             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
618             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
619             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
620             cb++;
621             cr++;
622             lum++;
623             p += BPP;
624         }
625         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
626             YUVA_IN(y, u, v, a, p, pal);
627             u1 = u;
628             v1 = v;
629             a1 = a;
630             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
631
632             YUVA_IN(y, u, v, a, p + BPP, pal);
633             u1 += u;
634             v1 += v;
635             a1 += a;
636             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
637             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
638             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
639             cb++;
640             cr++;
641             p += 2 * BPP;
642             lum += 2;
643         }
644         if (w) {
645             YUVA_IN(y, u, v, a, p, pal);
646             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
647             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
648             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
649             p++;
650             lum++;
651         }
652         p += wrap3 - dstw * BPP;
653         lum += wrap - dstw - dstx;
654         cb += dst->linesize[1] - width2 - skip2;
655         cr += dst->linesize[2] - width2 - skip2;
656     }
657     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
658         lum += dstx;
659         cb += skip2;
660         cr += skip2;
661
662         if (dstx & 1) {
663             YUVA_IN(y, u, v, a, p, pal);
664             u1 = u;
665             v1 = v;
666             a1 = a;
667             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
668             p += wrap3;
669             lum += wrap;
670             YUVA_IN(y, u, v, a, p, pal);
671             u1 += u;
672             v1 += v;
673             a1 += a;
674             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
675             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
676             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
677             cb++;
678             cr++;
679             p += -wrap3 + BPP;
680             lum += -wrap + 1;
681         }
682         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
683             YUVA_IN(y, u, v, a, p, pal);
684             u1 = u;
685             v1 = v;
686             a1 = a;
687             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
688
689             YUVA_IN(y, u, v, a, p + BPP, pal);
690             u1 += u;
691             v1 += v;
692             a1 += a;
693             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
694             p += wrap3;
695             lum += wrap;
696
697             YUVA_IN(y, u, v, a, p, pal);
698             u1 += u;
699             v1 += v;
700             a1 += a;
701             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
702
703             YUVA_IN(y, u, v, a, p + BPP, pal);
704             u1 += u;
705             v1 += v;
706             a1 += a;
707             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
708
709             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
710             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
711
712             cb++;
713             cr++;
714             p += -wrap3 + 2 * BPP;
715             lum += -wrap + 2;
716         }
717         if (w) {
718             YUVA_IN(y, u, v, a, p, pal);
719             u1 = u;
720             v1 = v;
721             a1 = a;
722             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
723             p += wrap3;
724             lum += wrap;
725             YUVA_IN(y, u, v, a, p, pal);
726             u1 += u;
727             v1 += v;
728             a1 += a;
729             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
730             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
731             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
732             cb++;
733             cr++;
734             p += -wrap3 + BPP;
735             lum += -wrap + 1;
736         }
737         p += wrap3 + (wrap3 - dstw * BPP);
738         lum += wrap + (wrap - dstw - dstx);
739         cb += dst->linesize[1] - width2 - skip2;
740         cr += dst->linesize[2] - width2 - skip2;
741     }
742     /* handle odd height */
743     if (h) {
744         lum += dstx;
745         cb += skip2;
746         cr += skip2;
747
748         if (dstx & 1) {
749             YUVA_IN(y, u, v, a, p, pal);
750             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
751             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
752             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
753             cb++;
754             cr++;
755             lum++;
756             p += BPP;
757         }
758         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
759             YUVA_IN(y, u, v, a, p, pal);
760             u1 = u;
761             v1 = v;
762             a1 = a;
763             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
764
765             YUVA_IN(y, u, v, a, p + BPP, pal);
766             u1 += u;
767             v1 += v;
768             a1 += a;
769             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
770             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
771             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
772             cb++;
773             cr++;
774             p += 2 * BPP;
775             lum += 2;
776         }
777         if (w) {
778             YUVA_IN(y, u, v, a, p, pal);
779             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
780             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
781             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
782         }
783     }
784 }
785
786 static void free_picture(VideoPicture *vp)
787 {
788      if (vp->bmp) {
789          SDL_FreeYUVOverlay(vp->bmp);
790          vp->bmp = NULL;
791      }
792 }
793
794 static void free_subpicture(SubPicture *sp)
795 {
796     avsubtitle_free(&sp->sub);
797 }
798
799 static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
800 {
801     float aspect_ratio;
802     int width, height, x, y;
803
804     if (vp->sar.num == 0)
805         aspect_ratio = 0;
806     else
807         aspect_ratio = av_q2d(vp->sar);
808
809     if (aspect_ratio <= 0.0)
810         aspect_ratio = 1.0;
811     aspect_ratio *= (float)vp->width / (float)vp->height;
812
813     /* XXX: we suppose the screen has a 1.0 pixel ratio */
814     height = scr_height;
815     width = ((int)rint(height * aspect_ratio)) & ~1;
816     if (width > scr_width) {
817         width = scr_width;
818         height = ((int)rint(width / aspect_ratio)) & ~1;
819     }
820     x = (scr_width - width) / 2;
821     y = (scr_height - height) / 2;
822     rect->x = scr_xleft + x;
823     rect->y = scr_ytop  + y;
824     rect->w = FFMAX(width,  1);
825     rect->h = FFMAX(height, 1);
826 }
827
828 static void video_image_display(VideoState *is)
829 {
830     VideoPicture *vp;
831     SubPicture *sp;
832     AVPicture pict;
833     SDL_Rect rect;
834     int i;
835
836     vp = &is->pictq[is->pictq_rindex];
837     if (vp->bmp) {
838         if (is->subtitle_st) {
839             if (is->subpq_size > 0) {
840                 sp = &is->subpq[is->subpq_rindex];
841
842                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
843                     SDL_LockYUVOverlay (vp->bmp);
844
845                     pict.data[0] = vp->bmp->pixels[0];
846                     pict.data[1] = vp->bmp->pixels[2];
847                     pict.data[2] = vp->bmp->pixels[1];
848
849                     pict.linesize[0] = vp->bmp->pitches[0];
850                     pict.linesize[1] = vp->bmp->pitches[2];
851                     pict.linesize[2] = vp->bmp->pitches[1];
852
853                     for (i = 0; i < sp->sub.num_rects; i++)
854                         blend_subrect(&pict, sp->sub.rects[i],
855                                       vp->bmp->w, vp->bmp->h);
856
857                     SDL_UnlockYUVOverlay (vp->bmp);
858                 }
859             }
860         }
861
862         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
863
864         SDL_DisplayYUVOverlay(vp->bmp, &rect);
865
866         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) {
867             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
868             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
869             is->last_display_rect = rect;
870         }
871     }
872 }
873
874 static inline int compute_mod(int a, int b)
875 {
876     return a < 0 ? a%b + b : a%b;
877 }
878
879 static void video_audio_display(VideoState *s)
880 {
881     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
882     int ch, channels, h, h2, bgcolor, fgcolor;
883     int64_t time_diff;
884     int rdft_bits, nb_freq;
885
886     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
887         ;
888     nb_freq = 1 << (rdft_bits - 1);
889
890     /* compute display index : center on currently output samples */
891     channels = s->audio_tgt.channels;
892     nb_display_channels = channels;
893     if (!s->paused) {
894         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
895         n = 2 * channels;
896         delay = s->audio_write_buf_size;
897         delay /= n;
898
899         /* to be more precise, we take into account the time spent since
900            the last buffer computation */
901         if (audio_callback_time) {
902             time_diff = av_gettime() - audio_callback_time;
903             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
904         }
905
906         delay += 2 * data_used;
907         if (delay < data_used)
908             delay = data_used;
909
910         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
911         if (s->show_mode == SHOW_MODE_WAVES) {
912             h = INT_MIN;
913             for (i = 0; i < 1000; i += channels) {
914                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
915                 int a = s->sample_array[idx];
916                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
917                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
918                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
919                 int score = a - d;
920                 if (h < score && (b ^ c) < 0) {
921                     h = score;
922                     i_start = idx;
923                 }
924             }
925         }
926
927         s->last_i_start = i_start;
928     } else {
929         i_start = s->last_i_start;
930     }
931
932     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
933     if (s->show_mode == SHOW_MODE_WAVES) {
934         fill_rectangle(screen,
935                        s->xleft, s->ytop, s->width, s->height,
936                        bgcolor, 0);
937
938         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
939
940         /* total height for one channel */
941         h = s->height / nb_display_channels;
942         /* graph height / 2 */
943         h2 = (h * 9) / 20;
944         for (ch = 0; ch < nb_display_channels; ch++) {
945             i = i_start + ch;
946             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
947             for (x = 0; x < s->width; x++) {
948                 y = (s->sample_array[i] * h2) >> 15;
949                 if (y < 0) {
950                     y = -y;
951                     ys = y1 - y;
952                 } else {
953                     ys = y1;
954                 }
955                 fill_rectangle(screen,
956                                s->xleft + x, ys, 1, y,
957                                fgcolor, 0);
958                 i += channels;
959                 if (i >= SAMPLE_ARRAY_SIZE)
960                     i -= SAMPLE_ARRAY_SIZE;
961             }
962         }
963
964         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
965
966         for (ch = 1; ch < nb_display_channels; ch++) {
967             y = s->ytop + ch * h;
968             fill_rectangle(screen,
969                            s->xleft, y, s->width, 1,
970                            fgcolor, 0);
971         }
972         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
973     } else {
974         nb_display_channels= FFMIN(nb_display_channels, 2);
975         if (rdft_bits != s->rdft_bits) {
976             av_rdft_end(s->rdft);
977             av_free(s->rdft_data);
978             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
979             s->rdft_bits = rdft_bits;
980             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
981         }
982         {
983             FFTSample *data[2];
984             for (ch = 0; ch < nb_display_channels; ch++) {
985                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
986                 i = i_start + ch;
987                 for (x = 0; x < 2 * nb_freq; x++) {
988                     double w = (x-nb_freq) * (1.0 / nb_freq);
989                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
990                     i += channels;
991                     if (i >= SAMPLE_ARRAY_SIZE)
992                         i -= SAMPLE_ARRAY_SIZE;
993                 }
994                 av_rdft_calc(s->rdft, data[ch]);
995             }
996             /* Least efficient way to do this, we should of course
997              * directly access it but it is more than fast enough. */
998             for (y = 0; y < s->height; y++) {
999                 double w = 1 / sqrt(nb_freq);
1000                 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]));
1001                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1002                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1003                 a = FFMIN(a, 255);
1004                 b = FFMIN(b, 255);
1005                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1006
1007                 fill_rectangle(screen,
1008                             s->xpos, s->height-y, 1, 1,
1009                             fgcolor, 0);
1010             }
1011         }
1012         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1013         if (!s->paused)
1014             s->xpos++;
1015         if (s->xpos >= s->width)
1016             s->xpos= s->xleft;
1017     }
1018 }
1019
1020 static void stream_close(VideoState *is)
1021 {
1022     int i;
1023     /* XXX: use a special url_shutdown call to abort parse cleanly */
1024     is->abort_request = 1;
1025     SDL_WaitThread(is->read_tid, NULL);
1026     packet_queue_destroy(&is->videoq);
1027     packet_queue_destroy(&is->audioq);
1028     packet_queue_destroy(&is->subtitleq);
1029
1030     /* free all pictures */
1031     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
1032         free_picture(&is->pictq[i]);
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 double vp_duration(VideoState *is, VideoPicture *vp, VideoPicture *nextvp) {
1294     if (vp->serial == nextvp->serial) {
1295         double duration = nextvp->pts - vp->pts;
1296         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1297             return vp->duration;
1298         else
1299             return duration;
1300     } else {
1301         return 0.0;
1302     }
1303 }
1304
1305 static void pictq_next_picture(VideoState *is) {
1306     /* update queue size and signal for next picture */
1307     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1308         is->pictq_rindex = 0;
1309
1310     SDL_LockMutex(is->pictq_mutex);
1311     is->pictq_size--;
1312     SDL_CondSignal(is->pictq_cond);
1313     SDL_UnlockMutex(is->pictq_mutex);
1314 }
1315
1316 static int pictq_prev_picture(VideoState *is) {
1317     VideoPicture *prevvp;
1318     int ret = 0;
1319     /* update queue size and signal for the previous picture */
1320     prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1321     if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
1322         SDL_LockMutex(is->pictq_mutex);
1323         if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
1324             if (--is->pictq_rindex == -1)
1325                 is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
1326             is->pictq_size++;
1327             ret = 1;
1328         }
1329         SDL_CondSignal(is->pictq_cond);
1330         SDL_UnlockMutex(is->pictq_mutex);
1331     }
1332     return ret;
1333 }
1334
1335 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1336     /* update current video pts */
1337     set_clock(&is->vidclk, pts, serial);
1338     sync_clock_to_slave(&is->extclk, &is->vidclk);
1339     is->video_current_pos = pos;
1340 }
1341
1342 /* called to display each frame */
1343 static void video_refresh(void *opaque, double *remaining_time)
1344 {
1345     VideoState *is = opaque;
1346     double time;
1347
1348     SubPicture *sp, *sp2;
1349
1350     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1351         check_external_clock_speed(is);
1352
1353     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1354         time = av_gettime() / 1000000.0;
1355         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1356             video_display(is);
1357             is->last_vis_time = time;
1358         }
1359         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1360     }
1361
1362     if (is->video_st) {
1363         int redisplay = 0;
1364         if (is->force_refresh)
1365             redisplay = pictq_prev_picture(is);
1366 retry:
1367         if (is->pictq_size == 0) {
1368             // nothing to do, no picture to display in the queue
1369         } else {
1370             double last_duration, duration, delay;
1371             VideoPicture *vp, *lastvp;
1372
1373             /* dequeue the picture */
1374             vp = &is->pictq[is->pictq_rindex];
1375             lastvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1376
1377             if (vp->serial != is->videoq.serial) {
1378                 pictq_next_picture(is);
1379                 is->video_current_pos = -1;
1380                 redisplay = 0;
1381                 goto retry;
1382             }
1383
1384             if (lastvp->serial != vp->serial && !redisplay)
1385                 is->frame_timer = av_gettime() / 1000000.0;
1386
1387             if (is->paused)
1388                 goto display;
1389
1390             /* compute nominal last_duration */
1391             last_duration = vp_duration(is, lastvp, vp);
1392             if (redisplay)
1393                 delay = 0.0;
1394             else
1395                 delay = compute_target_delay(last_duration, is);
1396
1397             time= av_gettime()/1000000.0;
1398             if (time < is->frame_timer + delay && !redisplay) {
1399                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1400                 return;
1401             }
1402
1403             is->frame_timer += delay;
1404             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1405                 is->frame_timer = time;
1406
1407             SDL_LockMutex(is->pictq_mutex);
1408             if (!redisplay && !isnan(vp->pts))
1409                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1410             SDL_UnlockMutex(is->pictq_mutex);
1411
1412             if (is->pictq_size > 1) {
1413                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1414                 duration = vp_duration(is, vp, nextvp);
1415                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1416                     if (!redisplay)
1417                         is->frame_drops_late++;
1418                     pictq_next_picture(is);
1419                     redisplay = 0;
1420                     goto retry;
1421                 }
1422             }
1423
1424             if (is->subtitle_st) {
1425                     while (is->subpq_size > 0) {
1426                         sp = &is->subpq[is->subpq_rindex];
1427
1428                         if (is->subpq_size > 1)
1429                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1430                         else
1431                             sp2 = NULL;
1432
1433                         if (sp->serial != is->subtitleq.serial
1434                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1435                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1436                         {
1437                             free_subpicture(sp);
1438
1439                             /* update queue size and signal for next picture */
1440                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1441                                 is->subpq_rindex = 0;
1442
1443                             SDL_LockMutex(is->subpq_mutex);
1444                             is->subpq_size--;
1445                             SDL_CondSignal(is->subpq_cond);
1446                             SDL_UnlockMutex(is->subpq_mutex);
1447                         } else {
1448                             break;
1449                         }
1450                     }
1451             }
1452
1453 display:
1454             /* display picture */
1455             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1456                 video_display(is);
1457
1458             pictq_next_picture(is);
1459
1460             if (is->step && !is->paused)
1461                 stream_toggle_pause(is);
1462         }
1463     }
1464     is->force_refresh = 0;
1465     if (show_status) {
1466         static int64_t last_time;
1467         int64_t cur_time;
1468         int aqsize, vqsize, sqsize;
1469         double av_diff;
1470
1471         cur_time = av_gettime();
1472         if (!last_time || (cur_time - last_time) >= 30000) {
1473             aqsize = 0;
1474             vqsize = 0;
1475             sqsize = 0;
1476             if (is->audio_st)
1477                 aqsize = is->audioq.size;
1478             if (is->video_st)
1479                 vqsize = is->videoq.size;
1480             if (is->subtitle_st)
1481                 sqsize = is->subtitleq.size;
1482             av_diff = 0;
1483             if (is->audio_st && is->video_st)
1484                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1485             else if (is->video_st)
1486                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1487             else if (is->audio_st)
1488                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1489             av_log(NULL, AV_LOG_INFO,
1490                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1491                    get_master_clock(is),
1492                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1493                    av_diff,
1494                    is->frame_drops_early + is->frame_drops_late,
1495                    aqsize / 1024,
1496                    vqsize / 1024,
1497                    sqsize,
1498                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1499                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1500             fflush(stdout);
1501             last_time = cur_time;
1502         }
1503     }
1504 }
1505
1506 /* allocate a picture (needs to do that in main thread to avoid
1507    potential locking problems */
1508 static void alloc_picture(VideoState *is)
1509 {
1510     VideoPicture *vp;
1511     int64_t bufferdiff;
1512
1513     vp = &is->pictq[is->pictq_windex];
1514
1515     free_picture(vp);
1516
1517     video_open(is, 0, vp);
1518
1519     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1520                                    SDL_YV12_OVERLAY,
1521                                    screen);
1522     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1523     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1524         /* SDL allocates a buffer smaller than requested if the video
1525          * overlay hardware is unable to support the requested size. */
1526         av_log(NULL, AV_LOG_FATAL,
1527                "Error: the video system does not support an image\n"
1528                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1529                         "to reduce the image size.\n", vp->width, vp->height );
1530         do_exit(is);
1531     }
1532
1533     SDL_LockMutex(is->pictq_mutex);
1534     vp->allocated = 1;
1535     SDL_CondSignal(is->pictq_cond);
1536     SDL_UnlockMutex(is->pictq_mutex);
1537 }
1538
1539 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1540     int i, width, height;
1541     Uint8 *p, *maxp;
1542     for (i = 0; i < 3; i++) {
1543         width  = bmp->w;
1544         height = bmp->h;
1545         if (i > 0) {
1546             width  >>= 1;
1547             height >>= 1;
1548         }
1549         if (bmp->pitches[i] > width) {
1550             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1551             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1552                 *(p+1) = *p;
1553         }
1554     }
1555 }
1556
1557 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1558 {
1559     VideoPicture *vp;
1560
1561 #if defined(DEBUG_SYNC) && 0
1562     printf("frame_type=%c pts=%0.3f\n",
1563            av_get_picture_type_char(src_frame->pict_type), pts);
1564 #endif
1565
1566     /* wait until we have space to put a new picture */
1567     SDL_LockMutex(is->pictq_mutex);
1568
1569     /* keep the last already displayed picture in the queue */
1570     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
1571            !is->videoq.abort_request) {
1572         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1573     }
1574     SDL_UnlockMutex(is->pictq_mutex);
1575
1576     if (is->videoq.abort_request)
1577         return -1;
1578
1579     vp = &is->pictq[is->pictq_windex];
1580
1581     vp->sar = src_frame->sample_aspect_ratio;
1582
1583     /* alloc or resize hardware picture buffer */
1584     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1585         vp->width  != src_frame->width ||
1586         vp->height != src_frame->height) {
1587         SDL_Event event;
1588
1589         vp->allocated  = 0;
1590         vp->reallocate = 0;
1591         vp->width = src_frame->width;
1592         vp->height = src_frame->height;
1593
1594         /* the allocation must be done in the main thread to avoid
1595            locking problems. */
1596         event.type = FF_ALLOC_EVENT;
1597         event.user.data1 = is;
1598         SDL_PushEvent(&event);
1599
1600         /* wait until the picture is allocated */
1601         SDL_LockMutex(is->pictq_mutex);
1602         while (!vp->allocated && !is->videoq.abort_request) {
1603             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1604         }
1605         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1606         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1607             while (!vp->allocated) {
1608                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1609             }
1610         }
1611         SDL_UnlockMutex(is->pictq_mutex);
1612
1613         if (is->videoq.abort_request)
1614             return -1;
1615     }
1616
1617     /* if the frame is not skipped, then display it */
1618     if (vp->bmp) {
1619         AVPicture pict = { { 0 } };
1620
1621         /* get a pointer on the bitmap */
1622         SDL_LockYUVOverlay (vp->bmp);
1623
1624         pict.data[0] = vp->bmp->pixels[0];
1625         pict.data[1] = vp->bmp->pixels[2];
1626         pict.data[2] = vp->bmp->pixels[1];
1627
1628         pict.linesize[0] = vp->bmp->pitches[0];
1629         pict.linesize[1] = vp->bmp->pitches[2];
1630         pict.linesize[2] = vp->bmp->pitches[1];
1631
1632 #if CONFIG_AVFILTER
1633         // FIXME use direct rendering
1634         av_picture_copy(&pict, (AVPicture *)src_frame,
1635                         src_frame->format, vp->width, vp->height);
1636 #else
1637         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1638         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1639             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1640             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1641         if (is->img_convert_ctx == NULL) {
1642             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1643             exit(1);
1644         }
1645         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1646                   0, vp->height, pict.data, pict.linesize);
1647 #endif
1648         /* workaround SDL PITCH_WORKAROUND */
1649         duplicate_right_border_pixels(vp->bmp);
1650         /* update the bitmap content */
1651         SDL_UnlockYUVOverlay(vp->bmp);
1652
1653         vp->pts = pts;
1654         vp->duration = duration;
1655         vp->pos = pos;
1656         vp->serial = serial;
1657
1658         /* now we can update the picture count */
1659         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1660             is->pictq_windex = 0;
1661         SDL_LockMutex(is->pictq_mutex);
1662         is->pictq_size++;
1663         SDL_UnlockMutex(is->pictq_mutex);
1664     }
1665     return 0;
1666 }
1667
1668 static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
1669 {
1670     int got_picture;
1671
1672     if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
1673         return -1;
1674
1675     if (pkt->data == flush_pkt.data) {
1676         avcodec_flush_buffers(is->video_st->codec);
1677         return 0;
1678     }
1679
1680     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1681         return 0;
1682
1683     if (!got_picture && !pkt->data)
1684         is->video_finished = *serial;
1685
1686     if (got_picture) {
1687         int ret = 1;
1688         double dpts = NAN;
1689
1690         if (decoder_reorder_pts == -1) {
1691             frame->pts = av_frame_get_best_effort_timestamp(frame);
1692         } else if (decoder_reorder_pts) {
1693             frame->pts = frame->pkt_pts;
1694         } else {
1695             frame->pts = frame->pkt_dts;
1696         }
1697
1698         if (frame->pts != AV_NOPTS_VALUE)
1699             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1700
1701         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1702
1703         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1704             if (frame->pts != AV_NOPTS_VALUE) {
1705                 double diff = dpts - get_master_clock(is);
1706                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1707                     diff - is->frame_last_filter_delay < 0 &&
1708                     *serial == is->vidclk.serial &&
1709                     is->videoq.nb_packets) {
1710                     is->frame_drops_early++;
1711                     av_frame_unref(frame);
1712                     ret = 0;
1713                 }
1714             }
1715         }
1716
1717         return ret;
1718     }
1719     return 0;
1720 }
1721
1722 #if CONFIG_AVFILTER
1723 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1724                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1725 {
1726     int ret;
1727     AVFilterInOut *outputs = NULL, *inputs = NULL;
1728
1729     if (filtergraph) {
1730         outputs = avfilter_inout_alloc();
1731         inputs  = avfilter_inout_alloc();
1732         if (!outputs || !inputs) {
1733             ret = AVERROR(ENOMEM);
1734             goto fail;
1735         }
1736
1737         outputs->name       = av_strdup("in");
1738         outputs->filter_ctx = source_ctx;
1739         outputs->pad_idx    = 0;
1740         outputs->next       = NULL;
1741
1742         inputs->name        = av_strdup("out");
1743         inputs->filter_ctx  = sink_ctx;
1744         inputs->pad_idx     = 0;
1745         inputs->next        = NULL;
1746
1747         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1748             goto fail;
1749     } else {
1750         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1751             goto fail;
1752     }
1753
1754     ret = avfilter_graph_config(graph, NULL);
1755 fail:
1756     avfilter_inout_free(&outputs);
1757     avfilter_inout_free(&inputs);
1758     return ret;
1759 }
1760
1761 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1762 {
1763     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1764     char sws_flags_str[128];
1765     char buffersrc_args[256];
1766     int ret;
1767     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
1768     AVCodecContext *codec = is->video_st->codec;
1769     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1770
1771     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1772     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1773     graph->scale_sws_opts = av_strdup(sws_flags_str);
1774
1775     snprintf(buffersrc_args, sizeof(buffersrc_args),
1776              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1777              frame->width, frame->height, frame->format,
1778              is->video_st->time_base.num, is->video_st->time_base.den,
1779              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1780     if (fr.num && fr.den)
1781         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1782
1783     if ((ret = avfilter_graph_create_filter(&filt_src,
1784                                             avfilter_get_by_name("buffer"),
1785                                             "ffplay_buffer", buffersrc_args, NULL,
1786                                             graph)) < 0)
1787         goto fail;
1788
1789     ret = avfilter_graph_create_filter(&filt_out,
1790                                        avfilter_get_by_name("buffersink"),
1791                                        "ffplay_buffersink", NULL, NULL, graph);
1792     if (ret < 0)
1793         goto fail;
1794
1795     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1796         goto fail;
1797
1798     /* SDL YUV code is not handling odd width/height for some driver
1799      * combinations, therefore we crop the picture to an even width/height. */
1800     if ((ret = avfilter_graph_create_filter(&filt_crop,
1801                                             avfilter_get_by_name("crop"),
1802                                             "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
1803         goto fail;
1804     if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
1805         goto fail;
1806
1807     if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
1808         goto fail;
1809
1810     is->in_video_filter  = filt_src;
1811     is->out_video_filter = filt_out;
1812
1813 fail:
1814     return ret;
1815 }
1816
1817 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1818 {
1819     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1820     int sample_rates[2] = { 0, -1 };
1821     int64_t channel_layouts[2] = { 0, -1 };
1822     int channels[2] = { 0, -1 };
1823     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1824     char aresample_swr_opts[512] = "";
1825     AVDictionaryEntry *e = NULL;
1826     char asrc_args[256];
1827     int ret;
1828
1829     avfilter_graph_free(&is->agraph);
1830     if (!(is->agraph = avfilter_graph_alloc()))
1831         return AVERROR(ENOMEM);
1832
1833     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1834         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1835     if (strlen(aresample_swr_opts))
1836         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1837     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1838
1839     ret = snprintf(asrc_args, sizeof(asrc_args),
1840                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1841                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1842                    is->audio_filter_src.channels,
1843                    1, is->audio_filter_src.freq);
1844     if (is->audio_filter_src.channel_layout)
1845         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1846                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1847
1848     ret = avfilter_graph_create_filter(&filt_asrc,
1849                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1850                                        asrc_args, NULL, is->agraph);
1851     if (ret < 0)
1852         goto end;
1853
1854
1855     ret = avfilter_graph_create_filter(&filt_asink,
1856                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1857                                        NULL, NULL, is->agraph);
1858     if (ret < 0)
1859         goto end;
1860
1861     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1862         goto end;
1863     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1864         goto end;
1865
1866     if (force_output_format) {
1867         channel_layouts[0] = is->audio_tgt.channel_layout;
1868         channels       [0] = is->audio_tgt.channels;
1869         sample_rates   [0] = is->audio_tgt.freq;
1870         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1871             goto end;
1872         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1873             goto end;
1874         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1875             goto end;
1876         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1877             goto end;
1878     }
1879
1880
1881     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1882         goto end;
1883
1884     is->in_audio_filter  = filt_asrc;
1885     is->out_audio_filter = filt_asink;
1886
1887 end:
1888     if (ret < 0)
1889         avfilter_graph_free(&is->agraph);
1890     return ret;
1891 }
1892 #endif  /* CONFIG_AVFILTER */
1893
1894 static int video_thread(void *arg)
1895 {
1896     AVPacket pkt = { 0 };
1897     VideoState *is = arg;
1898     AVFrame *frame = av_frame_alloc();
1899     double pts;
1900     double duration;
1901     int ret;
1902     int serial = 0;
1903     AVRational tb = is->video_st->time_base;
1904     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
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             frame_rate = filt_out->inputs[0]->frame_rate;
1956         }
1957
1958         ret = av_buffersrc_add_frame(filt_in, frame);
1959         if (ret < 0)
1960             goto the_end;
1961         av_frame_unref(frame);
1962         avcodec_get_frame_defaults(frame);
1963         av_free_packet(&pkt);
1964
1965         while (ret >= 0) {
1966             is->frame_last_returned_time = av_gettime() / 1000000.0;
1967
1968             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
1969             if (ret < 0) {
1970                 if (ret == AVERROR_EOF)
1971                     is->video_finished = serial;
1972                 ret = 0;
1973                 break;
1974             }
1975
1976             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1977             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1978                 is->frame_last_filter_delay = 0;
1979             tb = filt_out->inputs[0]->time_base;
1980 #endif
1981             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
1982             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
1983             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), serial);
1984             av_frame_unref(frame);
1985 #if CONFIG_AVFILTER
1986         }
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 = av_frame_alloc()))
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 optimizations", "" },
3451     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3452     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3453     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3454     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
3455     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3456     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3457     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3458     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3459     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3460     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3461     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3462     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3463 #if CONFIG_AVFILTER
3464     { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "set video filters", "filter_graph" },
3465     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3466 #endif
3467     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3468     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3469     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3470     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3471     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3472     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3473     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3474     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3475     { NULL, },
3476 };
3477
3478 static void show_usage(void)
3479 {
3480     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3481     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3482     av_log(NULL, AV_LOG_INFO, "\n");
3483 }
3484
3485 void show_help_default(const char *opt, const char *arg)
3486 {
3487     av_log_set_callback(log_callback_help);
3488     show_usage();
3489     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3490     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3491     printf("\n");
3492     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3493     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3494 #if !CONFIG_AVFILTER
3495     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3496 #else
3497     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3498 #endif
3499     printf("\nWhile playing:\n"
3500            "q, ESC              quit\n"
3501            "f                   toggle full screen\n"
3502            "p, SPC              pause\n"
3503            "a                   cycle audio channel in the current program\n"
3504            "v                   cycle video channel\n"
3505            "t                   cycle subtitle channel in the current program\n"
3506            "c                   cycle program\n"
3507            "w                   show audio waves\n"
3508            "s                   activate frame-step mode\n"
3509            "left/right          seek backward/forward 10 seconds\n"
3510            "down/up             seek backward/forward 1 minute\n"
3511            "page down/page up   seek backward/forward 10 minutes\n"
3512            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3513            );
3514 }
3515
3516 static int lockmgr(void **mtx, enum AVLockOp op)
3517 {
3518    switch(op) {
3519       case AV_LOCK_CREATE:
3520           *mtx = SDL_CreateMutex();
3521           if(!*mtx)
3522               return 1;
3523           return 0;
3524       case AV_LOCK_OBTAIN:
3525           return !!SDL_LockMutex(*mtx);
3526       case AV_LOCK_RELEASE:
3527           return !!SDL_UnlockMutex(*mtx);
3528       case AV_LOCK_DESTROY:
3529           SDL_DestroyMutex(*mtx);
3530           return 0;
3531    }
3532    return 1;
3533 }
3534
3535 /* Called from the main */
3536 int main(int argc, char **argv)
3537 {
3538     int flags;
3539     VideoState *is;
3540     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3541
3542     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3543     parse_loglevel(argc, argv, options);
3544
3545     /* register all codecs, demux and protocols */
3546 #if CONFIG_AVDEVICE
3547     avdevice_register_all();
3548 #endif
3549 #if CONFIG_AVFILTER
3550     avfilter_register_all();
3551 #endif
3552     av_register_all();
3553     avformat_network_init();
3554
3555     init_opts();
3556
3557     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3558     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3559
3560     show_banner(argc, argv, options);
3561
3562     parse_options(NULL, argc, argv, options, opt_input_file);
3563
3564     if (!input_filename) {
3565         show_usage();
3566         av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
3567         av_log(NULL, AV_LOG_FATAL,
3568                "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3569         exit(1);
3570     }
3571
3572     if (display_disable) {
3573         video_disable = 1;
3574     }
3575     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3576     if (audio_disable)
3577         flags &= ~SDL_INIT_AUDIO;
3578     if (display_disable)
3579         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3580 #if !defined(__MINGW32__) && !defined(__APPLE__)
3581     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3582 #endif
3583     if (SDL_Init (flags)) {
3584         av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
3585         av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
3586         exit(1);
3587     }
3588
3589     if (!display_disable) {
3590         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3591         fs_screen_width = vi->current_w;
3592         fs_screen_height = vi->current_h;
3593     }
3594
3595     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3596     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3597     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3598
3599     if (av_lockmgr_register(lockmgr)) {
3600         av_log(NULL, AV_LOG_FATAL, "Could not initialize lock manager!\n");
3601         do_exit(NULL);
3602     }
3603
3604     av_init_packet(&flush_pkt);
3605     flush_pkt.data = (uint8_t *)&flush_pkt;
3606
3607     is = stream_open(input_filename, file_iformat);
3608     if (!is) {
3609         av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
3610         do_exit(NULL);
3611     }
3612
3613     event_loop(is);
3614
3615     /* never returns */
3616
3617     return 0;
3618 }