MAINTAINERS: fix typo
[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 /* Minimum SDL audio buffer size, in samples. */
71 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
72 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
73 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
74
75 /* no AV sync correction is done if below the minimum AV sync threshold */
76 #define AV_SYNC_THRESHOLD_MIN 0.04
77 /* AV sync correction is done if above the maximum AV sync threshold */
78 #define AV_SYNC_THRESHOLD_MAX 0.1
79 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
80 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
81 /* no AV correction is done if too big error */
82 #define AV_NOSYNC_THRESHOLD 10.0
83
84 /* maximum audio speed change to get correct sync */
85 #define SAMPLE_CORRECTION_PERCENT_MAX 10
86
87 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
88 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
89 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
90 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
91
92 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
93 #define AUDIO_DIFF_AVG_NB   20
94
95 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
96 #define REFRESH_RATE 0.01
97
98 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
99 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
100 #define SAMPLE_ARRAY_SIZE (8 * 65536)
101
102 #define CURSOR_HIDE_DELAY 1000000
103
104 static int64_t sws_flags = SWS_BICUBIC;
105
106 typedef struct MyAVPacketList {
107     AVPacket pkt;
108     struct MyAVPacketList *next;
109     int serial;
110 } MyAVPacketList;
111
112 typedef struct PacketQueue {
113     MyAVPacketList *first_pkt, *last_pkt;
114     int nb_packets;
115     int size;
116     int abort_request;
117     int serial;
118     SDL_mutex *mutex;
119     SDL_cond *cond;
120 } PacketQueue;
121
122 #define VIDEO_PICTURE_QUEUE_SIZE 3
123 #define SUBPICTURE_QUEUE_SIZE 16
124
125 typedef struct VideoPicture {
126     double pts;             // presentation timestamp for this picture
127     double duration;        // estimated duration based on frame rate
128     int64_t pos;            // byte position in file
129     SDL_Overlay *bmp;
130     int width, height; /* source height & width */
131     int allocated;
132     int reallocate;
133     int serial;
134
135     AVRational sar;
136 } VideoPicture;
137
138 typedef struct SubPicture {
139     double pts; /* presentation time stamp for this picture */
140     AVSubtitle sub;
141     int serial;
142 } SubPicture;
143
144 typedef struct AudioParams {
145     int freq;
146     int channels;
147     int64_t channel_layout;
148     enum AVSampleFormat fmt;
149     int frame_size;
150     int bytes_per_sec;
151 } AudioParams;
152
153 typedef struct Clock {
154     double pts;           /* clock base */
155     double pts_drift;     /* clock base minus time at which we updated the clock */
156     double last_updated;
157     double speed;
158     int serial;           /* clock is based on a packet with this serial */
159     int paused;
160     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
161 } Clock;
162
163 enum {
164     AV_SYNC_AUDIO_MASTER, /* default choice */
165     AV_SYNC_VIDEO_MASTER,
166     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
167 };
168
169 typedef struct VideoState {
170     SDL_Thread *read_tid;
171     SDL_Thread *video_tid;
172     AVInputFormat *iformat;
173     int no_background;
174     int abort_request;
175     int force_refresh;
176     int paused;
177     int last_paused;
178     int queue_attachments_req;
179     int seek_req;
180     int seek_flags;
181     int64_t seek_pos;
182     int64_t seek_rel;
183     int read_pause_return;
184     AVFormatContext *ic;
185     int realtime;
186     int audio_finished;
187     int video_finished;
188
189     Clock audclk;
190     Clock vidclk;
191     Clock extclk;
192
193     int audio_stream;
194
195     int av_sync_type;
196
197     double audio_clock;
198     int audio_clock_serial;
199     double audio_diff_cum; /* used for AV difference average computation */
200     double audio_diff_avg_coef;
201     double audio_diff_threshold;
202     int audio_diff_avg_count;
203     AVStream *audio_st;
204     PacketQueue audioq;
205     int audio_hw_buf_size;
206     uint8_t silence_buf[SDL_AUDIO_MIN_BUFFER_SIZE];
207     uint8_t *audio_buf;
208     uint8_t *audio_buf1;
209     unsigned int audio_buf_size; /* in bytes */
210     unsigned int audio_buf1_size;
211     int audio_buf_index; /* in bytes */
212     int audio_write_buf_size;
213     int audio_buf_frames_pending;
214     AVPacket audio_pkt_temp;
215     AVPacket audio_pkt;
216     int audio_pkt_temp_serial;
217     int audio_last_serial;
218     struct AudioParams audio_src;
219 #if CONFIG_AVFILTER
220     struct AudioParams audio_filter_src;
221 #endif
222     struct AudioParams audio_tgt;
223     struct SwrContext *swr_ctx;
224     int frame_drops_early;
225     int frame_drops_late;
226     AVFrame *frame;
227     int64_t audio_frame_next_pts;
228
229     enum ShowMode {
230         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
231     } show_mode;
232     int16_t sample_array[SAMPLE_ARRAY_SIZE];
233     int sample_array_index;
234     int last_i_start;
235     RDFTContext *rdft;
236     int rdft_bits;
237     FFTSample *rdft_data;
238     int xpos;
239     double last_vis_time;
240
241     SDL_Thread *subtitle_tid;
242     int subtitle_stream;
243     AVStream *subtitle_st;
244     PacketQueue subtitleq;
245     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
246     int subpq_size, subpq_rindex, subpq_windex;
247     SDL_mutex *subpq_mutex;
248     SDL_cond *subpq_cond;
249
250     double frame_timer;
251     double frame_last_returned_time;
252     double frame_last_filter_delay;
253     int video_stream;
254     AVStream *video_st;
255     PacketQueue videoq;
256     int64_t video_current_pos;      // current displayed file pos
257     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
258     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
259     int pictq_size, pictq_rindex, pictq_windex, pictq_rindex_shown;
260     SDL_mutex *pictq_mutex;
261     SDL_cond *pictq_cond;
262 #if !CONFIG_AVFILTER
263     struct SwsContext *img_convert_ctx;
264 #endif
265     SDL_Rect last_display_rect;
266
267     char filename[1024];
268     int width, height, xleft, ytop;
269     int step;
270
271 #if CONFIG_AVFILTER
272     int vfilter_idx;
273     AVFilterContext *in_video_filter;   // the first filter in the video chain
274     AVFilterContext *out_video_filter;  // the last filter in the video chain
275     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
276     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
277     AVFilterGraph *agraph;              // audio filter graph
278 #endif
279
280     int last_video_stream, last_audio_stream, last_subtitle_stream;
281
282     SDL_cond *continue_read_thread;
283 } VideoState;
284
285 /* options specified by the user */
286 static AVInputFormat *file_iformat;
287 static const char *input_filename;
288 static const char *window_title;
289 static int fs_screen_width;
290 static int fs_screen_height;
291 static int default_width  = 640;
292 static int default_height = 480;
293 static int screen_width  = 0;
294 static int screen_height = 0;
295 static int audio_disable;
296 static int video_disable;
297 static int subtitle_disable;
298 static int wanted_stream[AVMEDIA_TYPE_NB] = {
299     [AVMEDIA_TYPE_AUDIO]    = -1,
300     [AVMEDIA_TYPE_VIDEO]    = -1,
301     [AVMEDIA_TYPE_SUBTITLE] = -1,
302 };
303 static int seek_by_bytes = -1;
304 static int display_disable;
305 static int show_status = 1;
306 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
307 static int64_t start_time = AV_NOPTS_VALUE;
308 static int64_t duration = AV_NOPTS_VALUE;
309 static int workaround_bugs = 1;
310 static int fast = 0;
311 static int genpts = 0;
312 static int lowres = 0;
313 static int decoder_reorder_pts = -1;
314 static int autoexit;
315 static int exit_on_keydown;
316 static int exit_on_mousedown;
317 static int loop = 1;
318 static int framedrop = -1;
319 static int infinite_buffer = -1;
320 static enum ShowMode show_mode = SHOW_MODE_NONE;
321 static const char *audio_codec_name;
322 static const char *subtitle_codec_name;
323 static const char *video_codec_name;
324 double rdftspeed = 0.02;
325 static int64_t cursor_last_shown;
326 static int cursor_hidden = 0;
327 #if CONFIG_AVFILTER
328 static const char **vfilters_list = NULL;
329 static int nb_vfilters = 0;
330 static char *afilters = NULL;
331 #endif
332 static int autorotate = 1;
333
334 /* current context */
335 static int is_full_screen;
336 static int64_t audio_callback_time;
337
338 static AVPacket flush_pkt;
339
340 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
341 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
342
343 static SDL_Surface *screen;
344
345 #if CONFIG_AVFILTER
346 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
347 {
348     GROW_ARRAY(vfilters_list, nb_vfilters);
349     vfilters_list[nb_vfilters - 1] = arg;
350     return 0;
351 }
352 #endif
353
354 static inline
355 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
356                    enum AVSampleFormat fmt2, int64_t channel_count2)
357 {
358     /* If channel count == 1, planar and non-planar formats are the same */
359     if (channel_count1 == 1 && channel_count2 == 1)
360         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
361     else
362         return channel_count1 != channel_count2 || fmt1 != fmt2;
363 }
364
365 static inline
366 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
367 {
368     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
369         return channel_layout;
370     else
371         return 0;
372 }
373
374 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
375 {
376     MyAVPacketList *pkt1;
377
378     if (q->abort_request)
379        return -1;
380
381     pkt1 = av_malloc(sizeof(MyAVPacketList));
382     if (!pkt1)
383         return -1;
384     pkt1->pkt = *pkt;
385     pkt1->next = NULL;
386     if (pkt == &flush_pkt)
387         q->serial++;
388     pkt1->serial = q->serial;
389
390     if (!q->last_pkt)
391         q->first_pkt = pkt1;
392     else
393         q->last_pkt->next = pkt1;
394     q->last_pkt = pkt1;
395     q->nb_packets++;
396     q->size += pkt1->pkt.size + sizeof(*pkt1);
397     /* XXX: should duplicate packet data in DV case */
398     SDL_CondSignal(q->cond);
399     return 0;
400 }
401
402 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
403 {
404     int ret;
405
406     /* duplicate the packet */
407     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
408         return -1;
409
410     SDL_LockMutex(q->mutex);
411     ret = packet_queue_put_private(q, pkt);
412     SDL_UnlockMutex(q->mutex);
413
414     if (pkt != &flush_pkt && ret < 0)
415         av_free_packet(pkt);
416
417     return ret;
418 }
419
420 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
421 {
422     AVPacket pkt1, *pkt = &pkt1;
423     av_init_packet(pkt);
424     pkt->data = NULL;
425     pkt->size = 0;
426     pkt->stream_index = stream_index;
427     return packet_queue_put(q, pkt);
428 }
429
430 /* packet queue handling */
431 static void packet_queue_init(PacketQueue *q)
432 {
433     memset(q, 0, sizeof(PacketQueue));
434     q->mutex = SDL_CreateMutex();
435     q->cond = SDL_CreateCond();
436     q->abort_request = 1;
437 }
438
439 static void packet_queue_flush(PacketQueue *q)
440 {
441     MyAVPacketList *pkt, *pkt1;
442
443     SDL_LockMutex(q->mutex);
444     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
445         pkt1 = pkt->next;
446         av_free_packet(&pkt->pkt);
447         av_freep(&pkt);
448     }
449     q->last_pkt = NULL;
450     q->first_pkt = NULL;
451     q->nb_packets = 0;
452     q->size = 0;
453     SDL_UnlockMutex(q->mutex);
454 }
455
456 static void packet_queue_destroy(PacketQueue *q)
457 {
458     packet_queue_flush(q);
459     SDL_DestroyMutex(q->mutex);
460     SDL_DestroyCond(q->cond);
461 }
462
463 static void packet_queue_abort(PacketQueue *q)
464 {
465     SDL_LockMutex(q->mutex);
466
467     q->abort_request = 1;
468
469     SDL_CondSignal(q->cond);
470
471     SDL_UnlockMutex(q->mutex);
472 }
473
474 static void packet_queue_start(PacketQueue *q)
475 {
476     SDL_LockMutex(q->mutex);
477     q->abort_request = 0;
478     packet_queue_put_private(q, &flush_pkt);
479     SDL_UnlockMutex(q->mutex);
480 }
481
482 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
483 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
484 {
485     MyAVPacketList *pkt1;
486     int ret;
487
488     SDL_LockMutex(q->mutex);
489
490     for (;;) {
491         if (q->abort_request) {
492             ret = -1;
493             break;
494         }
495
496         pkt1 = q->first_pkt;
497         if (pkt1) {
498             q->first_pkt = pkt1->next;
499             if (!q->first_pkt)
500                 q->last_pkt = NULL;
501             q->nb_packets--;
502             q->size -= pkt1->pkt.size + sizeof(*pkt1);
503             *pkt = pkt1->pkt;
504             if (serial)
505                 *serial = pkt1->serial;
506             av_free(pkt1);
507             ret = 1;
508             break;
509         } else if (!block) {
510             ret = 0;
511             break;
512         } else {
513             SDL_CondWait(q->cond, q->mutex);
514         }
515     }
516     SDL_UnlockMutex(q->mutex);
517     return ret;
518 }
519
520 static inline void fill_rectangle(SDL_Surface *screen,
521                                   int x, int y, int w, int h, int color, int update)
522 {
523     SDL_Rect rect;
524     rect.x = x;
525     rect.y = y;
526     rect.w = w;
527     rect.h = h;
528     SDL_FillRect(screen, &rect, color);
529     if (update && w > 0 && h > 0)
530         SDL_UpdateRect(screen, x, y, w, h);
531 }
532
533 /* draw only the border of a rectangle */
534 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
535 {
536     int w1, w2, h1, h2;
537
538     /* fill the background */
539     w1 = x;
540     if (w1 < 0)
541         w1 = 0;
542     w2 = width - (x + w);
543     if (w2 < 0)
544         w2 = 0;
545     h1 = y;
546     if (h1 < 0)
547         h1 = 0;
548     h2 = height - (y + h);
549     if (h2 < 0)
550         h2 = 0;
551     fill_rectangle(screen,
552                    xleft, ytop,
553                    w1, height,
554                    color, update);
555     fill_rectangle(screen,
556                    xleft + width - w2, ytop,
557                    w2, height,
558                    color, update);
559     fill_rectangle(screen,
560                    xleft + w1, ytop,
561                    width - w1 - w2, h1,
562                    color, update);
563     fill_rectangle(screen,
564                    xleft + w1, ytop + height - h2,
565                    width - w1 - w2, h2,
566                    color, update);
567 }
568
569 #define ALPHA_BLEND(a, oldp, newp, s)\
570 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
571
572 #define RGBA_IN(r, g, b, a, s)\
573 {\
574     unsigned int v = ((const uint32_t *)(s))[0];\
575     a = (v >> 24) & 0xff;\
576     r = (v >> 16) & 0xff;\
577     g = (v >> 8) & 0xff;\
578     b = v & 0xff;\
579 }
580
581 #define YUVA_IN(y, u, v, a, s, pal)\
582 {\
583     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
584     a = (val >> 24) & 0xff;\
585     y = (val >> 16) & 0xff;\
586     u = (val >> 8) & 0xff;\
587     v = val & 0xff;\
588 }
589
590 #define YUVA_OUT(d, y, u, v, a)\
591 {\
592     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
593 }
594
595
596 #define BPP 1
597
598 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
599 {
600     int wrap, wrap3, width2, skip2;
601     int y, u, v, a, u1, v1, a1, w, h;
602     uint8_t *lum, *cb, *cr;
603     const uint8_t *p;
604     const uint32_t *pal;
605     int dstx, dsty, dstw, dsth;
606
607     dstw = av_clip(rect->w, 0, imgw);
608     dsth = av_clip(rect->h, 0, imgh);
609     dstx = av_clip(rect->x, 0, imgw - dstw);
610     dsty = av_clip(rect->y, 0, imgh - dsth);
611     lum = dst->data[0] + dsty * dst->linesize[0];
612     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
613     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
614
615     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
616     skip2 = dstx >> 1;
617     wrap = dst->linesize[0];
618     wrap3 = rect->pict.linesize[0];
619     p = rect->pict.data[0];
620     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
621
622     if (dsty & 1) {
623         lum += dstx;
624         cb += skip2;
625         cr += skip2;
626
627         if (dstx & 1) {
628             YUVA_IN(y, u, v, a, p, pal);
629             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
630             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
631             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
632             cb++;
633             cr++;
634             lum++;
635             p += BPP;
636         }
637         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
638             YUVA_IN(y, u, v, a, p, pal);
639             u1 = u;
640             v1 = v;
641             a1 = a;
642             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
643
644             YUVA_IN(y, u, v, a, p + BPP, pal);
645             u1 += u;
646             v1 += v;
647             a1 += a;
648             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
649             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
650             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
651             cb++;
652             cr++;
653             p += 2 * BPP;
654             lum += 2;
655         }
656         if (w) {
657             YUVA_IN(y, u, v, a, p, pal);
658             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
659             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
660             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
661             p++;
662             lum++;
663         }
664         p += wrap3 - dstw * BPP;
665         lum += wrap - dstw - dstx;
666         cb += dst->linesize[1] - width2 - skip2;
667         cr += dst->linesize[2] - width2 - skip2;
668     }
669     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
670         lum += dstx;
671         cb += skip2;
672         cr += skip2;
673
674         if (dstx & 1) {
675             YUVA_IN(y, u, v, a, p, pal);
676             u1 = u;
677             v1 = v;
678             a1 = a;
679             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
680             p += wrap3;
681             lum += wrap;
682             YUVA_IN(y, u, v, a, p, pal);
683             u1 += u;
684             v1 += v;
685             a1 += a;
686             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
687             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
688             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
689             cb++;
690             cr++;
691             p += -wrap3 + BPP;
692             lum += -wrap + 1;
693         }
694         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
695             YUVA_IN(y, u, v, a, p, pal);
696             u1 = u;
697             v1 = v;
698             a1 = a;
699             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
700
701             YUVA_IN(y, u, v, a, p + BPP, pal);
702             u1 += u;
703             v1 += v;
704             a1 += a;
705             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
706             p += wrap3;
707             lum += wrap;
708
709             YUVA_IN(y, u, v, a, p, pal);
710             u1 += u;
711             v1 += v;
712             a1 += a;
713             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
714
715             YUVA_IN(y, u, v, a, p + BPP, pal);
716             u1 += u;
717             v1 += v;
718             a1 += a;
719             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
720
721             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
722             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
723
724             cb++;
725             cr++;
726             p += -wrap3 + 2 * BPP;
727             lum += -wrap + 2;
728         }
729         if (w) {
730             YUVA_IN(y, u, v, a, p, pal);
731             u1 = u;
732             v1 = v;
733             a1 = a;
734             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
735             p += wrap3;
736             lum += wrap;
737             YUVA_IN(y, u, v, a, p, pal);
738             u1 += u;
739             v1 += v;
740             a1 += a;
741             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
742             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
743             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
744             cb++;
745             cr++;
746             p += -wrap3 + BPP;
747             lum += -wrap + 1;
748         }
749         p += wrap3 + (wrap3 - dstw * BPP);
750         lum += wrap + (wrap - dstw - dstx);
751         cb += dst->linesize[1] - width2 - skip2;
752         cr += dst->linesize[2] - width2 - skip2;
753     }
754     /* handle odd height */
755     if (h) {
756         lum += dstx;
757         cb += skip2;
758         cr += skip2;
759
760         if (dstx & 1) {
761             YUVA_IN(y, u, v, a, p, pal);
762             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
763             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
764             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
765             cb++;
766             cr++;
767             lum++;
768             p += BPP;
769         }
770         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
771             YUVA_IN(y, u, v, a, p, pal);
772             u1 = u;
773             v1 = v;
774             a1 = a;
775             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
776
777             YUVA_IN(y, u, v, a, p + BPP, pal);
778             u1 += u;
779             v1 += v;
780             a1 += a;
781             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
782             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
783             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
784             cb++;
785             cr++;
786             p += 2 * BPP;
787             lum += 2;
788         }
789         if (w) {
790             YUVA_IN(y, u, v, a, p, pal);
791             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
792             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
793             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
794         }
795     }
796 }
797
798 static void free_picture(VideoPicture *vp)
799 {
800      if (vp->bmp) {
801          SDL_FreeYUVOverlay(vp->bmp);
802          vp->bmp = NULL;
803      }
804 }
805
806 static void free_subpicture(SubPicture *sp)
807 {
808     avsubtitle_free(&sp->sub);
809 }
810
811 static void calculate_display_rect(SDL_Rect *rect,
812                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
813                                    int pic_width, int pic_height, AVRational pic_sar)
814 {
815     float aspect_ratio;
816     int width, height, x, y;
817
818     if (pic_sar.num == 0)
819         aspect_ratio = 0;
820     else
821         aspect_ratio = av_q2d(pic_sar);
822
823     if (aspect_ratio <= 0.0)
824         aspect_ratio = 1.0;
825     aspect_ratio *= (float)pic_width / (float)pic_height;
826
827     /* XXX: we suppose the screen has a 1.0 pixel ratio */
828     height = scr_height;
829     width = ((int)rint(height * aspect_ratio)) & ~1;
830     if (width > scr_width) {
831         width = scr_width;
832         height = ((int)rint(width / aspect_ratio)) & ~1;
833     }
834     x = (scr_width - width) / 2;
835     y = (scr_height - height) / 2;
836     rect->x = scr_xleft + x;
837     rect->y = scr_ytop  + y;
838     rect->w = FFMAX(width,  1);
839     rect->h = FFMAX(height, 1);
840 }
841
842 static void video_image_display(VideoState *is)
843 {
844     VideoPicture *vp;
845     SubPicture *sp;
846     AVPicture pict;
847     SDL_Rect rect;
848     int i;
849
850     vp = &is->pictq[(is->pictq_rindex + is->pictq_rindex_shown) % VIDEO_PICTURE_QUEUE_SIZE];
851     if (vp->bmp) {
852         if (is->subtitle_st) {
853             if (is->subpq_size > 0) {
854                 sp = &is->subpq[is->subpq_rindex];
855
856                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
857                     SDL_LockYUVOverlay (vp->bmp);
858
859                     pict.data[0] = vp->bmp->pixels[0];
860                     pict.data[1] = vp->bmp->pixels[2];
861                     pict.data[2] = vp->bmp->pixels[1];
862
863                     pict.linesize[0] = vp->bmp->pitches[0];
864                     pict.linesize[1] = vp->bmp->pitches[2];
865                     pict.linesize[2] = vp->bmp->pitches[1];
866
867                     for (i = 0; i < sp->sub.num_rects; i++)
868                         blend_subrect(&pict, sp->sub.rects[i],
869                                       vp->bmp->w, vp->bmp->h);
870
871                     SDL_UnlockYUVOverlay (vp->bmp);
872                 }
873             }
874         }
875
876         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
877
878         SDL_DisplayYUVOverlay(vp->bmp, &rect);
879
880         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) {
881             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
882             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
883             is->last_display_rect = rect;
884         }
885     }
886 }
887
888 static inline int compute_mod(int a, int b)
889 {
890     return a < 0 ? a%b + b : a%b;
891 }
892
893 static void video_audio_display(VideoState *s)
894 {
895     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
896     int ch, channels, h, h2, bgcolor, fgcolor;
897     int64_t time_diff;
898     int rdft_bits, nb_freq;
899
900     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
901         ;
902     nb_freq = 1 << (rdft_bits - 1);
903
904     /* compute display index : center on currently output samples */
905     channels = s->audio_tgt.channels;
906     nb_display_channels = channels;
907     if (!s->paused) {
908         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
909         n = 2 * channels;
910         delay = s->audio_write_buf_size;
911         delay /= n;
912
913         /* to be more precise, we take into account the time spent since
914            the last buffer computation */
915         if (audio_callback_time) {
916             time_diff = av_gettime_relative() - audio_callback_time;
917             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
918         }
919
920         delay += 2 * data_used;
921         if (delay < data_used)
922             delay = data_used;
923
924         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
925         if (s->show_mode == SHOW_MODE_WAVES) {
926             h = INT_MIN;
927             for (i = 0; i < 1000; i += channels) {
928                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
929                 int a = s->sample_array[idx];
930                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
931                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
932                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
933                 int score = a - d;
934                 if (h < score && (b ^ c) < 0) {
935                     h = score;
936                     i_start = idx;
937                 }
938             }
939         }
940
941         s->last_i_start = i_start;
942     } else {
943         i_start = s->last_i_start;
944     }
945
946     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
947     if (s->show_mode == SHOW_MODE_WAVES) {
948         fill_rectangle(screen,
949                        s->xleft, s->ytop, s->width, s->height,
950                        bgcolor, 0);
951
952         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
953
954         /* total height for one channel */
955         h = s->height / nb_display_channels;
956         /* graph height / 2 */
957         h2 = (h * 9) / 20;
958         for (ch = 0; ch < nb_display_channels; ch++) {
959             i = i_start + ch;
960             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
961             for (x = 0; x < s->width; x++) {
962                 y = (s->sample_array[i] * h2) >> 15;
963                 if (y < 0) {
964                     y = -y;
965                     ys = y1 - y;
966                 } else {
967                     ys = y1;
968                 }
969                 fill_rectangle(screen,
970                                s->xleft + x, ys, 1, y,
971                                fgcolor, 0);
972                 i += channels;
973                 if (i >= SAMPLE_ARRAY_SIZE)
974                     i -= SAMPLE_ARRAY_SIZE;
975             }
976         }
977
978         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
979
980         for (ch = 1; ch < nb_display_channels; ch++) {
981             y = s->ytop + ch * h;
982             fill_rectangle(screen,
983                            s->xleft, y, s->width, 1,
984                            fgcolor, 0);
985         }
986         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
987     } else {
988         nb_display_channels= FFMIN(nb_display_channels, 2);
989         if (rdft_bits != s->rdft_bits) {
990             av_rdft_end(s->rdft);
991             av_free(s->rdft_data);
992             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
993             s->rdft_bits = rdft_bits;
994             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
995         }
996         {
997             FFTSample *data[2];
998             for (ch = 0; ch < nb_display_channels; ch++) {
999                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1000                 i = i_start + ch;
1001                 for (x = 0; x < 2 * nb_freq; x++) {
1002                     double w = (x-nb_freq) * (1.0 / nb_freq);
1003                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1004                     i += channels;
1005                     if (i >= SAMPLE_ARRAY_SIZE)
1006                         i -= SAMPLE_ARRAY_SIZE;
1007                 }
1008                 av_rdft_calc(s->rdft, data[ch]);
1009             }
1010             /* Least efficient way to do this, we should of course
1011              * directly access it but it is more than fast enough. */
1012             for (y = 0; y < s->height; y++) {
1013                 double w = 1 / sqrt(nb_freq);
1014                 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]));
1015                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1016                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1017                 a = FFMIN(a, 255);
1018                 b = FFMIN(b, 255);
1019                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1020
1021                 fill_rectangle(screen,
1022                             s->xpos, s->height-y, 1, 1,
1023                             fgcolor, 0);
1024             }
1025         }
1026         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1027         if (!s->paused)
1028             s->xpos++;
1029         if (s->xpos >= s->width)
1030             s->xpos= s->xleft;
1031     }
1032 }
1033
1034 static void stream_close(VideoState *is)
1035 {
1036     int i;
1037     /* XXX: use a special url_shutdown call to abort parse cleanly */
1038     is->abort_request = 1;
1039     SDL_WaitThread(is->read_tid, NULL);
1040     packet_queue_destroy(&is->videoq);
1041     packet_queue_destroy(&is->audioq);
1042     packet_queue_destroy(&is->subtitleq);
1043
1044     /* free all pictures */
1045     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
1046         free_picture(&is->pictq[i]);
1047     for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
1048         free_subpicture(&is->subpq[i]);
1049     SDL_DestroyMutex(is->pictq_mutex);
1050     SDL_DestroyCond(is->pictq_cond);
1051     SDL_DestroyMutex(is->subpq_mutex);
1052     SDL_DestroyCond(is->subpq_cond);
1053     SDL_DestroyCond(is->continue_read_thread);
1054 #if !CONFIG_AVFILTER
1055     sws_freeContext(is->img_convert_ctx);
1056 #endif
1057     av_free(is);
1058 }
1059
1060 static void do_exit(VideoState *is)
1061 {
1062     if (is) {
1063         stream_close(is);
1064     }
1065     av_lockmgr_register(NULL);
1066     uninit_opts();
1067 #if CONFIG_AVFILTER
1068     av_freep(&vfilters_list);
1069 #endif
1070     avformat_network_deinit();
1071     if (show_status)
1072         printf("\n");
1073     SDL_Quit();
1074     av_log(NULL, AV_LOG_QUIET, "%s", "");
1075     exit(0);
1076 }
1077
1078 static void sigterm_handler(int sig)
1079 {
1080     exit(123);
1081 }
1082
1083 static void set_default_window_size(int width, int height, AVRational sar)
1084 {
1085     SDL_Rect rect;
1086     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1087     default_width  = rect.w;
1088     default_height = rect.h;
1089 }
1090
1091 static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
1092 {
1093     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1094     int w,h;
1095
1096     if (is_full_screen) flags |= SDL_FULLSCREEN;
1097     else                flags |= SDL_RESIZABLE;
1098
1099     if (vp && vp->width)
1100         set_default_window_size(vp->width, vp->height, vp->sar);
1101
1102     if (is_full_screen && fs_screen_width) {
1103         w = fs_screen_width;
1104         h = fs_screen_height;
1105     } else if (!is_full_screen && screen_width) {
1106         w = screen_width;
1107         h = screen_height;
1108     } else {
1109         w = default_width;
1110         h = default_height;
1111     }
1112     w = FFMIN(16383, w);
1113     if (screen && is->width == screen->w && screen->w == w
1114        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1115         return 0;
1116     screen = SDL_SetVideoMode(w, h, 0, flags);
1117     if (!screen) {
1118         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1119         do_exit(is);
1120     }
1121     if (!window_title)
1122         window_title = input_filename;
1123     SDL_WM_SetCaption(window_title, window_title);
1124
1125     is->width  = screen->w;
1126     is->height = screen->h;
1127
1128     return 0;
1129 }
1130
1131 /* display the current picture, if any */
1132 static void video_display(VideoState *is)
1133 {
1134     if (!screen)
1135         video_open(is, 0, NULL);
1136     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1137         video_audio_display(is);
1138     else if (is->video_st)
1139         video_image_display(is);
1140 }
1141
1142 static double get_clock(Clock *c)
1143 {
1144     if (*c->queue_serial != c->serial)
1145         return NAN;
1146     if (c->paused) {
1147         return c->pts;
1148     } else {
1149         double time = av_gettime_relative() / 1000000.0;
1150         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1151     }
1152 }
1153
1154 static void set_clock_at(Clock *c, double pts, int serial, double time)
1155 {
1156     c->pts = pts;
1157     c->last_updated = time;
1158     c->pts_drift = c->pts - time;
1159     c->serial = serial;
1160 }
1161
1162 static void set_clock(Clock *c, double pts, int serial)
1163 {
1164     double time = av_gettime_relative() / 1000000.0;
1165     set_clock_at(c, pts, serial, time);
1166 }
1167
1168 static void set_clock_speed(Clock *c, double speed)
1169 {
1170     set_clock(c, get_clock(c), c->serial);
1171     c->speed = speed;
1172 }
1173
1174 static void init_clock(Clock *c, int *queue_serial)
1175 {
1176     c->speed = 1.0;
1177     c->paused = 0;
1178     c->queue_serial = queue_serial;
1179     set_clock(c, NAN, -1);
1180 }
1181
1182 static void sync_clock_to_slave(Clock *c, Clock *slave)
1183 {
1184     double clock = get_clock(c);
1185     double slave_clock = get_clock(slave);
1186     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1187         set_clock(c, slave_clock, slave->serial);
1188 }
1189
1190 static int get_master_sync_type(VideoState *is) {
1191     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1192         if (is->video_st)
1193             return AV_SYNC_VIDEO_MASTER;
1194         else
1195             return AV_SYNC_AUDIO_MASTER;
1196     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1197         if (is->audio_st)
1198             return AV_SYNC_AUDIO_MASTER;
1199         else
1200             return AV_SYNC_EXTERNAL_CLOCK;
1201     } else {
1202         return AV_SYNC_EXTERNAL_CLOCK;
1203     }
1204 }
1205
1206 /* get the current master clock value */
1207 static double get_master_clock(VideoState *is)
1208 {
1209     double val;
1210
1211     switch (get_master_sync_type(is)) {
1212         case AV_SYNC_VIDEO_MASTER:
1213             val = get_clock(&is->vidclk);
1214             break;
1215         case AV_SYNC_AUDIO_MASTER:
1216             val = get_clock(&is->audclk);
1217             break;
1218         default:
1219             val = get_clock(&is->extclk);
1220             break;
1221     }
1222     return val;
1223 }
1224
1225 static void check_external_clock_speed(VideoState *is) {
1226    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1227        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1228        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1229    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1230               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1231        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1232    } else {
1233        double speed = is->extclk.speed;
1234        if (speed != 1.0)
1235            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1236    }
1237 }
1238
1239 /* seek in the stream */
1240 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1241 {
1242     if (!is->seek_req) {
1243         is->seek_pos = pos;
1244         is->seek_rel = rel;
1245         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1246         if (seek_by_bytes)
1247             is->seek_flags |= AVSEEK_FLAG_BYTE;
1248         is->seek_req = 1;
1249         SDL_CondSignal(is->continue_read_thread);
1250     }
1251 }
1252
1253 /* pause or resume the video */
1254 static void stream_toggle_pause(VideoState *is)
1255 {
1256     if (is->paused) {
1257         is->frame_timer += av_gettime_relative() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1258         if (is->read_pause_return != AVERROR(ENOSYS)) {
1259             is->vidclk.paused = 0;
1260         }
1261         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1262     }
1263     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1264     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1265 }
1266
1267 static void toggle_pause(VideoState *is)
1268 {
1269     stream_toggle_pause(is);
1270     is->step = 0;
1271 }
1272
1273 static void step_to_next_frame(VideoState *is)
1274 {
1275     /* if the stream is paused unpause it, then step */
1276     if (is->paused)
1277         stream_toggle_pause(is);
1278     is->step = 1;
1279 }
1280
1281 static double compute_target_delay(double delay, VideoState *is)
1282 {
1283     double sync_threshold, diff;
1284
1285     /* update delay to follow master synchronisation source */
1286     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1287         /* if video is slave, we try to correct big delays by
1288            duplicating or deleting a frame */
1289         diff = get_clock(&is->vidclk) - get_master_clock(is);
1290
1291         /* skip or repeat frame. We take into account the
1292            delay to compute the threshold. I still don't know
1293            if it is the best guess */
1294         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1295         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1296             if (diff <= -sync_threshold)
1297                 delay = FFMAX(0, delay + diff);
1298             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1299                 delay = delay + diff;
1300             else if (diff >= sync_threshold)
1301                 delay = 2 * delay;
1302         }
1303     }
1304
1305     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1306             delay, -diff);
1307
1308     return delay;
1309 }
1310
1311 static double vp_duration(VideoState *is, VideoPicture *vp, VideoPicture *nextvp) {
1312     if (vp->serial == nextvp->serial) {
1313         double duration = nextvp->pts - vp->pts;
1314         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1315             return vp->duration;
1316         else
1317             return duration;
1318     } else {
1319         return 0.0;
1320     }
1321 }
1322
1323 /* return the number of undisplayed pictures in the queue */
1324 static int pictq_nb_remaining(VideoState *is) {
1325     return is->pictq_size - is->pictq_rindex_shown;
1326 }
1327
1328 /* jump back to the previous picture if available by resetting rindex_shown */
1329 static int pictq_prev_picture(VideoState *is) {
1330     int ret = is->pictq_rindex_shown;
1331     is->pictq_rindex_shown = 0;
1332     return ret;
1333 }
1334
1335 static void pictq_next_picture(VideoState *is) {
1336     if (!is->pictq_rindex_shown) {
1337         is->pictq_rindex_shown = 1;
1338         return;
1339     }
1340     /* update queue size and signal for next picture */
1341     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1342         is->pictq_rindex = 0;
1343
1344     SDL_LockMutex(is->pictq_mutex);
1345     is->pictq_size--;
1346     SDL_CondSignal(is->pictq_cond);
1347     SDL_UnlockMutex(is->pictq_mutex);
1348 }
1349
1350 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1351     /* update current video pts */
1352     set_clock(&is->vidclk, pts, serial);
1353     sync_clock_to_slave(&is->extclk, &is->vidclk);
1354     is->video_current_pos = pos;
1355 }
1356
1357 /* called to display each frame */
1358 static void video_refresh(void *opaque, double *remaining_time)
1359 {
1360     VideoState *is = opaque;
1361     double time;
1362
1363     SubPicture *sp, *sp2;
1364
1365     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1366         check_external_clock_speed(is);
1367
1368     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1369         time = av_gettime_relative() / 1000000.0;
1370         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1371             video_display(is);
1372             is->last_vis_time = time;
1373         }
1374         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1375     }
1376
1377     if (is->video_st) {
1378         int redisplay = 0;
1379         if (is->force_refresh)
1380             redisplay = pictq_prev_picture(is);
1381 retry:
1382         if (pictq_nb_remaining(is) == 0) {
1383             // nothing to do, no picture to display in the queue
1384         } else {
1385             double last_duration, duration, delay;
1386             VideoPicture *vp, *lastvp;
1387
1388             /* dequeue the picture */
1389             lastvp = &is->pictq[is->pictq_rindex];
1390             vp = &is->pictq[(is->pictq_rindex + is->pictq_rindex_shown) % VIDEO_PICTURE_QUEUE_SIZE];
1391
1392             if (vp->serial != is->videoq.serial) {
1393                 pictq_next_picture(is);
1394                 is->video_current_pos = -1;
1395                 redisplay = 0;
1396                 goto retry;
1397             }
1398
1399             if (lastvp->serial != vp->serial && !redisplay)
1400                 is->frame_timer = av_gettime_relative() / 1000000.0;
1401
1402             if (is->paused)
1403                 goto display;
1404
1405             /* compute nominal last_duration */
1406             last_duration = vp_duration(is, lastvp, vp);
1407             if (redisplay)
1408                 delay = 0.0;
1409             else
1410                 delay = compute_target_delay(last_duration, is);
1411
1412             time= av_gettime_relative()/1000000.0;
1413             if (time < is->frame_timer + delay && !redisplay) {
1414                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1415                 return;
1416             }
1417
1418             is->frame_timer += delay;
1419             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1420                 is->frame_timer = time;
1421
1422             SDL_LockMutex(is->pictq_mutex);
1423             if (!redisplay && !isnan(vp->pts))
1424                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1425             SDL_UnlockMutex(is->pictq_mutex);
1426
1427             if (pictq_nb_remaining(is) > 1) {
1428                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + is->pictq_rindex_shown + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1429                 duration = vp_duration(is, vp, nextvp);
1430                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1431                     if (!redisplay)
1432                         is->frame_drops_late++;
1433                     pictq_next_picture(is);
1434                     redisplay = 0;
1435                     goto retry;
1436                 }
1437             }
1438
1439             if (is->subtitle_st) {
1440                     while (is->subpq_size > 0) {
1441                         sp = &is->subpq[is->subpq_rindex];
1442
1443                         if (is->subpq_size > 1)
1444                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1445                         else
1446                             sp2 = NULL;
1447
1448                         if (sp->serial != is->subtitleq.serial
1449                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1450                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1451                         {
1452                             free_subpicture(sp);
1453
1454                             /* update queue size and signal for next picture */
1455                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1456                                 is->subpq_rindex = 0;
1457
1458                             SDL_LockMutex(is->subpq_mutex);
1459                             is->subpq_size--;
1460                             SDL_CondSignal(is->subpq_cond);
1461                             SDL_UnlockMutex(is->subpq_mutex);
1462                         } else {
1463                             break;
1464                         }
1465                     }
1466             }
1467
1468 display:
1469             /* display picture */
1470             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1471                 video_display(is);
1472
1473             pictq_next_picture(is);
1474
1475             if (is->step && !is->paused)
1476                 stream_toggle_pause(is);
1477         }
1478     }
1479     is->force_refresh = 0;
1480     if (show_status) {
1481         static int64_t last_time;
1482         int64_t cur_time;
1483         int aqsize, vqsize, sqsize;
1484         double av_diff;
1485
1486         cur_time = av_gettime_relative();
1487         if (!last_time || (cur_time - last_time) >= 30000) {
1488             aqsize = 0;
1489             vqsize = 0;
1490             sqsize = 0;
1491             if (is->audio_st)
1492                 aqsize = is->audioq.size;
1493             if (is->video_st)
1494                 vqsize = is->videoq.size;
1495             if (is->subtitle_st)
1496                 sqsize = is->subtitleq.size;
1497             av_diff = 0;
1498             if (is->audio_st && is->video_st)
1499                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1500             else if (is->video_st)
1501                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1502             else if (is->audio_st)
1503                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1504             av_log(NULL, AV_LOG_INFO,
1505                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1506                    get_master_clock(is),
1507                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1508                    av_diff,
1509                    is->frame_drops_early + is->frame_drops_late,
1510                    aqsize / 1024,
1511                    vqsize / 1024,
1512                    sqsize,
1513                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1514                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1515             fflush(stdout);
1516             last_time = cur_time;
1517         }
1518     }
1519 }
1520
1521 /* allocate a picture (needs to do that in main thread to avoid
1522    potential locking problems */
1523 static void alloc_picture(VideoState *is)
1524 {
1525     VideoPicture *vp;
1526     int64_t bufferdiff;
1527
1528     vp = &is->pictq[is->pictq_windex];
1529
1530     free_picture(vp);
1531
1532     video_open(is, 0, vp);
1533
1534     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1535                                    SDL_YV12_OVERLAY,
1536                                    screen);
1537     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1538     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1539         /* SDL allocates a buffer smaller than requested if the video
1540          * overlay hardware is unable to support the requested size. */
1541         av_log(NULL, AV_LOG_FATAL,
1542                "Error: the video system does not support an image\n"
1543                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1544                         "to reduce the image size.\n", vp->width, vp->height );
1545         do_exit(is);
1546     }
1547
1548     SDL_LockMutex(is->pictq_mutex);
1549     vp->allocated = 1;
1550     SDL_CondSignal(is->pictq_cond);
1551     SDL_UnlockMutex(is->pictq_mutex);
1552 }
1553
1554 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1555     int i, width, height;
1556     Uint8 *p, *maxp;
1557     for (i = 0; i < 3; i++) {
1558         width  = bmp->w;
1559         height = bmp->h;
1560         if (i > 0) {
1561             width  >>= 1;
1562             height >>= 1;
1563         }
1564         if (bmp->pitches[i] > width) {
1565             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1566             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1567                 *(p+1) = *p;
1568         }
1569     }
1570 }
1571
1572 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1573 {
1574     VideoPicture *vp;
1575
1576 #if defined(DEBUG_SYNC) && 0
1577     printf("frame_type=%c pts=%0.3f\n",
1578            av_get_picture_type_char(src_frame->pict_type), pts);
1579 #endif
1580
1581     /* wait until we have space to put a new picture */
1582     SDL_LockMutex(is->pictq_mutex);
1583
1584     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1585            !is->videoq.abort_request) {
1586         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1587     }
1588     SDL_UnlockMutex(is->pictq_mutex);
1589
1590     if (is->videoq.abort_request)
1591         return -1;
1592
1593     vp = &is->pictq[is->pictq_windex];
1594
1595     vp->sar = src_frame->sample_aspect_ratio;
1596
1597     /* alloc or resize hardware picture buffer */
1598     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1599         vp->width  != src_frame->width ||
1600         vp->height != src_frame->height) {
1601         SDL_Event event;
1602
1603         vp->allocated  = 0;
1604         vp->reallocate = 0;
1605         vp->width = src_frame->width;
1606         vp->height = src_frame->height;
1607
1608         /* the allocation must be done in the main thread to avoid
1609            locking problems. */
1610         event.type = FF_ALLOC_EVENT;
1611         event.user.data1 = is;
1612         SDL_PushEvent(&event);
1613
1614         /* wait until the picture is allocated */
1615         SDL_LockMutex(is->pictq_mutex);
1616         while (!vp->allocated && !is->videoq.abort_request) {
1617             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1618         }
1619         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1620         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1621             while (!vp->allocated && !is->abort_request) {
1622                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1623             }
1624         }
1625         SDL_UnlockMutex(is->pictq_mutex);
1626
1627         if (is->videoq.abort_request)
1628             return -1;
1629     }
1630
1631     /* if the frame is not skipped, then display it */
1632     if (vp->bmp) {
1633         AVPicture pict = { { 0 } };
1634
1635         /* get a pointer on the bitmap */
1636         SDL_LockYUVOverlay (vp->bmp);
1637
1638         pict.data[0] = vp->bmp->pixels[0];
1639         pict.data[1] = vp->bmp->pixels[2];
1640         pict.data[2] = vp->bmp->pixels[1];
1641
1642         pict.linesize[0] = vp->bmp->pitches[0];
1643         pict.linesize[1] = vp->bmp->pitches[2];
1644         pict.linesize[2] = vp->bmp->pitches[1];
1645
1646 #if CONFIG_AVFILTER
1647         // FIXME use direct rendering
1648         av_picture_copy(&pict, (AVPicture *)src_frame,
1649                         src_frame->format, vp->width, vp->height);
1650 #else
1651         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1652         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1653             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1654             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1655         if (!is->img_convert_ctx) {
1656             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1657             exit(1);
1658         }
1659         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1660                   0, vp->height, pict.data, pict.linesize);
1661 #endif
1662         /* workaround SDL PITCH_WORKAROUND */
1663         duplicate_right_border_pixels(vp->bmp);
1664         /* update the bitmap content */
1665         SDL_UnlockYUVOverlay(vp->bmp);
1666
1667         vp->pts = pts;
1668         vp->duration = duration;
1669         vp->pos = pos;
1670         vp->serial = serial;
1671
1672         /* now we can update the picture count */
1673         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1674             is->pictq_windex = 0;
1675         SDL_LockMutex(is->pictq_mutex);
1676         is->pictq_size++;
1677         SDL_UnlockMutex(is->pictq_mutex);
1678     }
1679     return 0;
1680 }
1681
1682 static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
1683 {
1684     int got_picture;
1685
1686     if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
1687         return -1;
1688
1689     if (pkt->data == flush_pkt.data) {
1690         avcodec_flush_buffers(is->video_st->codec);
1691         return 0;
1692     }
1693
1694     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1695         return 0;
1696
1697     if (!got_picture && !pkt->data)
1698         is->video_finished = *serial;
1699
1700     if (got_picture) {
1701         int ret = 1;
1702         double dpts = NAN;
1703
1704         if (decoder_reorder_pts == -1) {
1705             frame->pts = av_frame_get_best_effort_timestamp(frame);
1706         } else if (decoder_reorder_pts) {
1707             frame->pts = frame->pkt_pts;
1708         } else {
1709             frame->pts = frame->pkt_dts;
1710         }
1711
1712         if (frame->pts != AV_NOPTS_VALUE)
1713             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1714
1715         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1716
1717         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1718             if (frame->pts != AV_NOPTS_VALUE) {
1719                 double diff = dpts - get_master_clock(is);
1720                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1721                     diff - is->frame_last_filter_delay < 0 &&
1722                     *serial == is->vidclk.serial &&
1723                     is->videoq.nb_packets) {
1724                     is->frame_drops_early++;
1725                     av_frame_unref(frame);
1726                     ret = 0;
1727                 }
1728             }
1729         }
1730
1731         return ret;
1732     }
1733     return 0;
1734 }
1735
1736 #if CONFIG_AVFILTER
1737 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1738                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1739 {
1740     int ret, i;
1741     int nb_filters = graph->nb_filters;
1742     AVFilterInOut *outputs = NULL, *inputs = NULL;
1743
1744     if (filtergraph) {
1745         outputs = avfilter_inout_alloc();
1746         inputs  = avfilter_inout_alloc();
1747         if (!outputs || !inputs) {
1748             ret = AVERROR(ENOMEM);
1749             goto fail;
1750         }
1751
1752         outputs->name       = av_strdup("in");
1753         outputs->filter_ctx = source_ctx;
1754         outputs->pad_idx    = 0;
1755         outputs->next       = NULL;
1756
1757         inputs->name        = av_strdup("out");
1758         inputs->filter_ctx  = sink_ctx;
1759         inputs->pad_idx     = 0;
1760         inputs->next        = NULL;
1761
1762         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1763             goto fail;
1764     } else {
1765         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1766             goto fail;
1767     }
1768
1769     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1770     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1771         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1772
1773     ret = avfilter_graph_config(graph, NULL);
1774 fail:
1775     avfilter_inout_free(&outputs);
1776     avfilter_inout_free(&inputs);
1777     return ret;
1778 }
1779
1780 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1781 {
1782     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1783     char sws_flags_str[128];
1784     char buffersrc_args[256];
1785     int ret;
1786     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1787     AVCodecContext *codec = is->video_st->codec;
1788     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1789
1790     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1791     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1792     graph->scale_sws_opts = av_strdup(sws_flags_str);
1793
1794     snprintf(buffersrc_args, sizeof(buffersrc_args),
1795              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1796              frame->width, frame->height, frame->format,
1797              is->video_st->time_base.num, is->video_st->time_base.den,
1798              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1799     if (fr.num && fr.den)
1800         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1801
1802     if ((ret = avfilter_graph_create_filter(&filt_src,
1803                                             avfilter_get_by_name("buffer"),
1804                                             "ffplay_buffer", buffersrc_args, NULL,
1805                                             graph)) < 0)
1806         goto fail;
1807
1808     ret = avfilter_graph_create_filter(&filt_out,
1809                                        avfilter_get_by_name("buffersink"),
1810                                        "ffplay_buffersink", NULL, NULL, graph);
1811     if (ret < 0)
1812         goto fail;
1813
1814     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1815         goto fail;
1816
1817     last_filter = filt_out;
1818
1819 /* Note: this macro adds a filter before the lastly added filter, so the
1820  * processing order of the filters is in reverse */
1821 #define INSERT_FILT(name, arg) do {                                         \
1822     AVFilterContext *filt_ctx;                                              \
1823                                                                             \
1824     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1825                                        avfilter_get_by_name(name),          \
1826                                        "ffplay_" name, arg, NULL, graph);   \
1827     if (ret < 0)                                                            \
1828         goto fail;                                                          \
1829                                                                             \
1830     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                       \
1831     if (ret < 0)                                                            \
1832         goto fail;                                                          \
1833                                                                             \
1834     last_filter = filt_ctx;                                                 \
1835 } while (0)
1836
1837     /* SDL YUV code is not handling odd width/height for some driver
1838      * combinations, therefore we crop the picture to an even width/height. */
1839     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
1840
1841     if (autorotate) {
1842         AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
1843         if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
1844             if (!strcmp(rotate_tag->value, "90")) {
1845                 INSERT_FILT("transpose", "clock");
1846             } else if (!strcmp(rotate_tag->value, "180")) {
1847                 INSERT_FILT("hflip", NULL);
1848                 INSERT_FILT("vflip", NULL);
1849             } else if (!strcmp(rotate_tag->value, "270")) {
1850                 INSERT_FILT("transpose", "cclock");
1851             } else {
1852                 char rotate_buf[64];
1853                 snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
1854                 INSERT_FILT("rotate", rotate_buf);
1855             }
1856         }
1857     }
1858
1859     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1860         goto fail;
1861
1862     is->in_video_filter  = filt_src;
1863     is->out_video_filter = filt_out;
1864
1865 fail:
1866     return ret;
1867 }
1868
1869 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1870 {
1871     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1872     int sample_rates[2] = { 0, -1 };
1873     int64_t channel_layouts[2] = { 0, -1 };
1874     int channels[2] = { 0, -1 };
1875     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1876     char aresample_swr_opts[512] = "";
1877     AVDictionaryEntry *e = NULL;
1878     char asrc_args[256];
1879     int ret;
1880
1881     avfilter_graph_free(&is->agraph);
1882     if (!(is->agraph = avfilter_graph_alloc()))
1883         return AVERROR(ENOMEM);
1884
1885     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1886         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1887     if (strlen(aresample_swr_opts))
1888         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1889     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1890
1891     ret = snprintf(asrc_args, sizeof(asrc_args),
1892                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1893                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1894                    is->audio_filter_src.channels,
1895                    1, is->audio_filter_src.freq);
1896     if (is->audio_filter_src.channel_layout)
1897         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1898                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1899
1900     ret = avfilter_graph_create_filter(&filt_asrc,
1901                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1902                                        asrc_args, NULL, is->agraph);
1903     if (ret < 0)
1904         goto end;
1905
1906
1907     ret = avfilter_graph_create_filter(&filt_asink,
1908                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1909                                        NULL, NULL, is->agraph);
1910     if (ret < 0)
1911         goto end;
1912
1913     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1914         goto end;
1915     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1916         goto end;
1917
1918     if (force_output_format) {
1919         channel_layouts[0] = is->audio_tgt.channel_layout;
1920         channels       [0] = is->audio_tgt.channels;
1921         sample_rates   [0] = is->audio_tgt.freq;
1922         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1923             goto end;
1924         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1925             goto end;
1926         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1927             goto end;
1928         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1929             goto end;
1930     }
1931
1932
1933     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1934         goto end;
1935
1936     is->in_audio_filter  = filt_asrc;
1937     is->out_audio_filter = filt_asink;
1938
1939 end:
1940     if (ret < 0)
1941         avfilter_graph_free(&is->agraph);
1942     return ret;
1943 }
1944 #endif  /* CONFIG_AVFILTER */
1945
1946 static int video_thread(void *arg)
1947 {
1948     AVPacket pkt = { 0 };
1949     VideoState *is = arg;
1950     AVFrame *frame = av_frame_alloc();
1951     double pts;
1952     double duration;
1953     int ret;
1954     int serial = 0;
1955     AVRational tb = is->video_st->time_base;
1956     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
1957
1958 #if CONFIG_AVFILTER
1959     AVFilterGraph *graph = avfilter_graph_alloc();
1960     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1961     int last_w = 0;
1962     int last_h = 0;
1963     enum AVPixelFormat last_format = -2;
1964     int last_serial = -1;
1965     int last_vfilter_idx = 0;
1966 #endif
1967
1968     for (;;) {
1969         while (is->paused && !is->videoq.abort_request)
1970             SDL_Delay(10);
1971
1972         av_free_packet(&pkt);
1973
1974         ret = get_video_frame(is, frame, &pkt, &serial);
1975         if (ret < 0)
1976             goto the_end;
1977         if (!ret)
1978             continue;
1979
1980 #if CONFIG_AVFILTER
1981         if (   last_w != frame->width
1982             || last_h != frame->height
1983             || last_format != frame->format
1984             || last_serial != serial
1985             || last_vfilter_idx != is->vfilter_idx) {
1986             av_log(NULL, AV_LOG_DEBUG,
1987                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
1988                    last_w, last_h,
1989                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
1990                    frame->width, frame->height,
1991                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
1992             avfilter_graph_free(&graph);
1993             graph = avfilter_graph_alloc();
1994             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
1995                 SDL_Event event;
1996                 event.type = FF_QUIT_EVENT;
1997                 event.user.data1 = is;
1998                 SDL_PushEvent(&event);
1999                 goto the_end;
2000             }
2001             filt_in  = is->in_video_filter;
2002             filt_out = is->out_video_filter;
2003             last_w = frame->width;
2004             last_h = frame->height;
2005             last_format = frame->format;
2006             last_serial = serial;
2007             last_vfilter_idx = is->vfilter_idx;
2008             frame_rate = filt_out->inputs[0]->frame_rate;
2009         }
2010
2011         ret = av_buffersrc_add_frame(filt_in, frame);
2012         if (ret < 0)
2013             goto the_end;
2014
2015         while (ret >= 0) {
2016             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2017
2018             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2019             if (ret < 0) {
2020                 if (ret == AVERROR_EOF)
2021                     is->video_finished = serial;
2022                 ret = 0;
2023                 break;
2024             }
2025
2026             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2027             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2028                 is->frame_last_filter_delay = 0;
2029             tb = filt_out->inputs[0]->time_base;
2030 #endif
2031             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2032             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2033             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), serial);
2034             av_frame_unref(frame);
2035 #if CONFIG_AVFILTER
2036         }
2037 #endif
2038
2039         if (ret < 0)
2040             goto the_end;
2041     }
2042  the_end:
2043 #if CONFIG_AVFILTER
2044     avfilter_graph_free(&graph);
2045 #endif
2046     av_free_packet(&pkt);
2047     av_frame_free(&frame);
2048     return 0;
2049 }
2050
2051 static int subtitle_thread(void *arg)
2052 {
2053     VideoState *is = arg;
2054     SubPicture *sp;
2055     AVPacket pkt1, *pkt = &pkt1;
2056     int got_subtitle;
2057     int serial;
2058     double pts;
2059     int i, j;
2060     int r, g, b, y, u, v, a;
2061
2062     for (;;) {
2063         while (is->paused && !is->subtitleq.abort_request) {
2064             SDL_Delay(10);
2065         }
2066         if (packet_queue_get(&is->subtitleq, pkt, 1, &serial) < 0)
2067             break;
2068
2069         if (pkt->data == flush_pkt.data) {
2070             avcodec_flush_buffers(is->subtitle_st->codec);
2071             continue;
2072         }
2073         SDL_LockMutex(is->subpq_mutex);
2074         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
2075                !is->subtitleq.abort_request) {
2076             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
2077         }
2078         SDL_UnlockMutex(is->subpq_mutex);
2079
2080         if (is->subtitleq.abort_request)
2081             return 0;
2082
2083         sp = &is->subpq[is->subpq_windex];
2084
2085        /* NOTE: ipts is the PTS of the _first_ picture beginning in
2086            this packet, if any */
2087         pts = 0;
2088         if (pkt->pts != AV_NOPTS_VALUE)
2089             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
2090
2091         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
2092                                  &got_subtitle, pkt);
2093         if (got_subtitle && sp->sub.format == 0) {
2094             if (sp->sub.pts != AV_NOPTS_VALUE)
2095                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2096             sp->pts = pts;
2097             sp->serial = serial;
2098
2099             for (i = 0; i < sp->sub.num_rects; i++)
2100             {
2101                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2102                 {
2103                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2104                     y = RGB_TO_Y_CCIR(r, g, b);
2105                     u = RGB_TO_U_CCIR(r, g, b, 0);
2106                     v = RGB_TO_V_CCIR(r, g, b, 0);
2107                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2108                 }
2109             }
2110
2111             /* now we can update the picture count */
2112             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
2113                 is->subpq_windex = 0;
2114             SDL_LockMutex(is->subpq_mutex);
2115             is->subpq_size++;
2116             SDL_UnlockMutex(is->subpq_mutex);
2117         } else if (got_subtitle) {
2118             avsubtitle_free(&sp->sub);
2119         }
2120         av_free_packet(pkt);
2121     }
2122     return 0;
2123 }
2124
2125 /* copy samples for viewing in editor window */
2126 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2127 {
2128     int size, len;
2129
2130     size = samples_size / sizeof(short);
2131     while (size > 0) {
2132         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2133         if (len > size)
2134             len = size;
2135         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2136         samples += len;
2137         is->sample_array_index += len;
2138         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2139             is->sample_array_index = 0;
2140         size -= len;
2141     }
2142 }
2143
2144 /* return the wanted number of samples to get better sync if sync_type is video
2145  * or external master clock */
2146 static int synchronize_audio(VideoState *is, int nb_samples)
2147 {
2148     int wanted_nb_samples = nb_samples;
2149
2150     /* if not master, then we try to remove or add samples to correct the clock */
2151     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2152         double diff, avg_diff;
2153         int min_nb_samples, max_nb_samples;
2154
2155         diff = get_clock(&is->audclk) - get_master_clock(is);
2156
2157         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2158             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2159             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2160                 /* not enough measures to have a correct estimate */
2161                 is->audio_diff_avg_count++;
2162             } else {
2163                 /* estimate the A-V difference */
2164                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2165
2166                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2167                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2168                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2169                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2170                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2171                 }
2172                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2173                         diff, avg_diff, wanted_nb_samples - nb_samples,
2174                         is->audio_clock, is->audio_diff_threshold);
2175             }
2176         } else {
2177             /* too big difference : may be initial PTS errors, so
2178                reset A-V filter */
2179             is->audio_diff_avg_count = 0;
2180             is->audio_diff_cum       = 0;
2181         }
2182     }
2183
2184     return wanted_nb_samples;
2185 }
2186
2187 /**
2188  * Decode one audio frame and return its uncompressed size.
2189  *
2190  * The processed audio frame is decoded, converted if required, and
2191  * stored in is->audio_buf, with size in bytes given by the return
2192  * value.
2193  */
2194 static int audio_decode_frame(VideoState *is)
2195 {
2196     AVPacket *pkt_temp = &is->audio_pkt_temp;
2197     AVPacket *pkt = &is->audio_pkt;
2198     AVCodecContext *dec = is->audio_st->codec;
2199     int len1, data_size, resampled_data_size;
2200     int64_t dec_channel_layout;
2201     int got_frame;
2202     av_unused double audio_clock0;
2203     int wanted_nb_samples;
2204     AVRational tb;
2205     int ret;
2206     int reconfigure;
2207
2208     for (;;) {
2209         /* NOTE: the audio packet can contain several frames */
2210         while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
2211             if (!is->frame) {
2212                 if (!(is->frame = av_frame_alloc()))
2213                     return AVERROR(ENOMEM);
2214             } else {
2215                 av_frame_unref(is->frame);
2216             }
2217
2218             if (is->audioq.serial != is->audio_pkt_temp_serial)
2219                 break;
2220
2221             if (is->paused)
2222                 return -1;
2223
2224             if (!is->audio_buf_frames_pending) {
2225                 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
2226                 if (len1 < 0) {
2227                     /* if error, we skip the frame */
2228                     pkt_temp->size = 0;
2229                     break;
2230                 }
2231
2232                 pkt_temp->dts =
2233                 pkt_temp->pts = AV_NOPTS_VALUE;
2234                 pkt_temp->data += len1;
2235                 pkt_temp->size -= len1;
2236                 if (pkt_temp->data && pkt_temp->size <= 0 || !pkt_temp->data && !got_frame)
2237                     pkt_temp->stream_index = -1;
2238                 if (!pkt_temp->data && !got_frame)
2239                     is->audio_finished = is->audio_pkt_temp_serial;
2240
2241                 if (!got_frame)
2242                     continue;
2243
2244                 tb = (AVRational){1, is->frame->sample_rate};
2245                 if (is->frame->pts != AV_NOPTS_VALUE)
2246                     is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
2247                 else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
2248                     is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
2249                 else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
2250 #if CONFIG_AVFILTER
2251                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
2252 #else
2253                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
2254 #endif
2255
2256                 if (is->frame->pts != AV_NOPTS_VALUE)
2257                     is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;
2258
2259 #if CONFIG_AVFILTER
2260                 dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
2261
2262                 reconfigure =
2263                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2264                                    is->frame->format, av_frame_get_channels(is->frame))    ||
2265                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2266                     is->audio_filter_src.freq           != is->frame->sample_rate ||
2267                     is->audio_pkt_temp_serial           != is->audio_last_serial;
2268
2269                 if (reconfigure) {
2270                     char buf1[1024], buf2[1024];
2271                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2272                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2273                     av_log(NULL, AV_LOG_DEBUG,
2274                            "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",
2275                            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,
2276                            is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);
2277
2278                     is->audio_filter_src.fmt            = is->frame->format;
2279                     is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
2280                     is->audio_filter_src.channel_layout = dec_channel_layout;
2281                     is->audio_filter_src.freq           = is->frame->sample_rate;
2282                     is->audio_last_serial               = is->audio_pkt_temp_serial;
2283
2284                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2285                         return ret;
2286                 }
2287
2288                 if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
2289                     return ret;
2290 #endif
2291             }
2292 #if CONFIG_AVFILTER
2293             if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
2294                 if (ret == AVERROR(EAGAIN)) {
2295                     is->audio_buf_frames_pending = 0;
2296                     continue;
2297                 }
2298                 if (ret == AVERROR_EOF)
2299                     is->audio_finished = is->audio_pkt_temp_serial;
2300                 return ret;
2301             }
2302             is->audio_buf_frames_pending = 1;
2303             tb = is->out_audio_filter->inputs[0]->time_base;
2304 #endif
2305
2306             data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
2307                                                    is->frame->nb_samples,
2308                                                    is->frame->format, 1);
2309
2310             dec_channel_layout =
2311                 (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
2312                 is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
2313             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
2314
2315             if (is->frame->format        != is->audio_src.fmt            ||
2316                 dec_channel_layout       != is->audio_src.channel_layout ||
2317                 is->frame->sample_rate   != is->audio_src.freq           ||
2318                 (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
2319                 swr_free(&is->swr_ctx);
2320                 is->swr_ctx = swr_alloc_set_opts(NULL,
2321                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2322                                                  dec_channel_layout,           is->frame->format, is->frame->sample_rate,
2323                                                  0, NULL);
2324                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2325                     av_log(NULL, AV_LOG_ERROR,
2326                            "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2327                             is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
2328                             is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2329                     break;
2330                 }
2331                 is->audio_src.channel_layout = dec_channel_layout;
2332                 is->audio_src.channels       = av_frame_get_channels(is->frame);
2333                 is->audio_src.freq = is->frame->sample_rate;
2334                 is->audio_src.fmt = is->frame->format;
2335             }
2336
2337             if (is->swr_ctx) {
2338                 const uint8_t **in = (const uint8_t **)is->frame->extended_data;
2339                 uint8_t **out = &is->audio_buf1;
2340                 int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
2341                 int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2342                 int len2;
2343                 if (out_size < 0) {
2344                     av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2345                     break;
2346                 }
2347                 if (wanted_nb_samples != is->frame->nb_samples) {
2348                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
2349                                                 wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
2350                         av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2351                         break;
2352                     }
2353                 }
2354                 av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2355                 if (!is->audio_buf1)
2356                     return AVERROR(ENOMEM);
2357                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
2358                 if (len2 < 0) {
2359                     av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2360                     break;
2361                 }
2362                 if (len2 == out_count) {
2363                     av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2364                     swr_init(is->swr_ctx);
2365                 }
2366                 is->audio_buf = is->audio_buf1;
2367                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2368             } else {
2369                 is->audio_buf = is->frame->data[0];
2370                 resampled_data_size = data_size;
2371             }
2372
2373             audio_clock0 = is->audio_clock;
2374             /* update the audio clock with the pts */
2375             if (is->frame->pts != AV_NOPTS_VALUE)
2376                 is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
2377             else
2378                 is->audio_clock = NAN;
2379             is->audio_clock_serial = is->audio_pkt_temp_serial;
2380 #ifdef DEBUG
2381             {
2382                 static double last_clock;
2383                 printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2384                        is->audio_clock - last_clock,
2385                        is->audio_clock, audio_clock0);
2386                 last_clock = is->audio_clock;
2387             }
2388 #endif
2389             return resampled_data_size;
2390         }
2391
2392         /* free the current packet */
2393         if (pkt->data)
2394             av_free_packet(pkt);
2395         memset(pkt_temp, 0, sizeof(*pkt_temp));
2396         pkt_temp->stream_index = -1;
2397
2398         if (is->audioq.abort_request) {
2399             return -1;
2400         }
2401
2402         if (is->audioq.nb_packets == 0)
2403             SDL_CondSignal(is->continue_read_thread);
2404
2405         /* read next packet */
2406         if ((packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
2407             return -1;
2408
2409         if (pkt->data == flush_pkt.data) {
2410             avcodec_flush_buffers(dec);
2411             is->audio_buf_frames_pending = 0;
2412             is->audio_frame_next_pts = AV_NOPTS_VALUE;
2413             if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
2414                 is->audio_frame_next_pts = is->audio_st->start_time;
2415         }
2416
2417         *pkt_temp = *pkt;
2418     }
2419 }
2420
2421 /* prepare a new audio buffer */
2422 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2423 {
2424     VideoState *is = opaque;
2425     int audio_size, len1;
2426
2427     audio_callback_time = av_gettime_relative();
2428
2429     while (len > 0) {
2430         if (is->audio_buf_index >= is->audio_buf_size) {
2431            audio_size = audio_decode_frame(is);
2432            if (audio_size < 0) {
2433                 /* if error, just output silence */
2434                is->audio_buf      = is->silence_buf;
2435                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2436            } else {
2437                if (is->show_mode != SHOW_MODE_VIDEO)
2438                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2439                is->audio_buf_size = audio_size;
2440            }
2441            is->audio_buf_index = 0;
2442         }
2443         len1 = is->audio_buf_size - is->audio_buf_index;
2444         if (len1 > len)
2445             len1 = len;
2446         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2447         len -= len1;
2448         stream += len1;
2449         is->audio_buf_index += len1;
2450     }
2451     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2452     /* Let's assume the audio driver that is used by SDL has two periods. */
2453     if (!isnan(is->audio_clock)) {
2454         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2455         sync_clock_to_slave(&is->extclk, &is->audclk);
2456     }
2457 }
2458
2459 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2460 {
2461     SDL_AudioSpec wanted_spec, spec;
2462     const char *env;
2463     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2464     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2465     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2466
2467     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2468     if (env) {
2469         wanted_nb_channels = atoi(env);
2470         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2471     }
2472     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2473         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2474         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2475     }
2476     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2477     wanted_spec.channels = wanted_nb_channels;
2478     wanted_spec.freq = wanted_sample_rate;
2479     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2480         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2481         return -1;
2482     }
2483     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2484         next_sample_rate_idx--;
2485     wanted_spec.format = AUDIO_S16SYS;
2486     wanted_spec.silence = 0;
2487     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2488     wanted_spec.callback = sdl_audio_callback;
2489     wanted_spec.userdata = opaque;
2490     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2491         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2492                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2493         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2494         if (!wanted_spec.channels) {
2495             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2496             wanted_spec.channels = wanted_nb_channels;
2497             if (!wanted_spec.freq) {
2498                 av_log(NULL, AV_LOG_ERROR,
2499                        "No more combinations to try, audio open failed\n");
2500                 return -1;
2501             }
2502         }
2503         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2504     }
2505     if (spec.format != AUDIO_S16SYS) {
2506         av_log(NULL, AV_LOG_ERROR,
2507                "SDL advised audio format %d is not supported!\n", spec.format);
2508         return -1;
2509     }
2510     if (spec.channels != wanted_spec.channels) {
2511         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2512         if (!wanted_channel_layout) {
2513             av_log(NULL, AV_LOG_ERROR,
2514                    "SDL advised channel count %d is not supported!\n", spec.channels);
2515             return -1;
2516         }
2517     }
2518
2519     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2520     audio_hw_params->freq = spec.freq;
2521     audio_hw_params->channel_layout = wanted_channel_layout;
2522     audio_hw_params->channels =  spec.channels;
2523     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2524     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2525     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2526         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2527         return -1;
2528     }
2529     return spec.size;
2530 }
2531
2532 /* open a given stream. Return 0 if OK */
2533 static int stream_component_open(VideoState *is, int stream_index)
2534 {
2535     AVFormatContext *ic = is->ic;
2536     AVCodecContext *avctx;
2537     AVCodec *codec;
2538     const char *forced_codec_name = NULL;
2539     AVDictionary *opts;
2540     AVDictionaryEntry *t = NULL;
2541     int sample_rate, nb_channels;
2542     int64_t channel_layout;
2543     int ret;
2544     int stream_lowres = lowres;
2545
2546     if (stream_index < 0 || stream_index >= ic->nb_streams)
2547         return -1;
2548     avctx = ic->streams[stream_index]->codec;
2549
2550     codec = avcodec_find_decoder(avctx->codec_id);
2551
2552     switch(avctx->codec_type){
2553         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2554         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2555         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2556     }
2557     if (forced_codec_name)
2558         codec = avcodec_find_decoder_by_name(forced_codec_name);
2559     if (!codec) {
2560         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2561                                       "No codec could be found with name '%s'\n", forced_codec_name);
2562         else                   av_log(NULL, AV_LOG_WARNING,
2563                                       "No codec could be found with id %d\n", avctx->codec_id);
2564         return -1;
2565     }
2566
2567     avctx->codec_id = codec->id;
2568     avctx->workaround_bugs   = workaround_bugs;
2569     if(stream_lowres > av_codec_get_max_lowres(codec)){
2570         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2571                 av_codec_get_max_lowres(codec));
2572         stream_lowres = av_codec_get_max_lowres(codec);
2573     }
2574     av_codec_set_lowres(avctx, stream_lowres);
2575
2576     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2577     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2578     if(codec->capabilities & CODEC_CAP_DR1)
2579         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2580
2581     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2582     if (!av_dict_get(opts, "threads", NULL, 0))
2583         av_dict_set(&opts, "threads", "auto", 0);
2584     if (stream_lowres)
2585         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2586     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2587         av_dict_set(&opts, "refcounted_frames", "1", 0);
2588     if (avcodec_open2(avctx, codec, &opts) < 0)
2589         return -1;
2590     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2591         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2592         return AVERROR_OPTION_NOT_FOUND;
2593     }
2594
2595     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2596     switch (avctx->codec_type) {
2597     case AVMEDIA_TYPE_AUDIO:
2598 #if CONFIG_AVFILTER
2599         {
2600             AVFilterLink *link;
2601
2602             is->audio_filter_src.freq           = avctx->sample_rate;
2603             is->audio_filter_src.channels       = avctx->channels;
2604             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2605             is->audio_filter_src.fmt            = avctx->sample_fmt;
2606             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2607                 return ret;
2608             link = is->out_audio_filter->inputs[0];
2609             sample_rate    = link->sample_rate;
2610             nb_channels    = link->channels;
2611             channel_layout = link->channel_layout;
2612         }
2613 #else
2614         sample_rate    = avctx->sample_rate;
2615         nb_channels    = avctx->channels;
2616         channel_layout = avctx->channel_layout;
2617 #endif
2618
2619         /* prepare audio output */
2620         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2621             return ret;
2622         is->audio_hw_buf_size = ret;
2623         is->audio_src = is->audio_tgt;
2624         is->audio_buf_size  = 0;
2625         is->audio_buf_index = 0;
2626
2627         /* init averaging filter */
2628         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2629         is->audio_diff_avg_count = 0;
2630         /* since we do not have a precise anough audio fifo fullness,
2631            we correct audio sync only if larger than this threshold */
2632         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2633
2634         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2635         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2636         is->audio_pkt_temp.stream_index = -1;
2637
2638         is->audio_stream = stream_index;
2639         is->audio_st = ic->streams[stream_index];
2640
2641         packet_queue_start(&is->audioq);
2642         SDL_PauseAudio(0);
2643         break;
2644     case AVMEDIA_TYPE_VIDEO:
2645         is->video_stream = stream_index;
2646         is->video_st = ic->streams[stream_index];
2647
2648         packet_queue_start(&is->videoq);
2649         is->video_tid = SDL_CreateThread(video_thread, is);
2650         is->queue_attachments_req = 1;
2651         break;
2652     case AVMEDIA_TYPE_SUBTITLE:
2653         is->subtitle_stream = stream_index;
2654         is->subtitle_st = ic->streams[stream_index];
2655         packet_queue_start(&is->subtitleq);
2656
2657         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2658         break;
2659     default:
2660         break;
2661     }
2662     return 0;
2663 }
2664
2665 static void stream_component_close(VideoState *is, int stream_index)
2666 {
2667     AVFormatContext *ic = is->ic;
2668     AVCodecContext *avctx;
2669
2670     if (stream_index < 0 || stream_index >= ic->nb_streams)
2671         return;
2672     avctx = ic->streams[stream_index]->codec;
2673
2674     switch (avctx->codec_type) {
2675     case AVMEDIA_TYPE_AUDIO:
2676         packet_queue_abort(&is->audioq);
2677
2678         SDL_CloseAudio();
2679
2680         packet_queue_flush(&is->audioq);
2681         av_free_packet(&is->audio_pkt);
2682         swr_free(&is->swr_ctx);
2683         av_freep(&is->audio_buf1);
2684         is->audio_buf1_size = 0;
2685         is->audio_buf = NULL;
2686         av_frame_free(&is->frame);
2687
2688         if (is->rdft) {
2689             av_rdft_end(is->rdft);
2690             av_freep(&is->rdft_data);
2691             is->rdft = NULL;
2692             is->rdft_bits = 0;
2693         }
2694 #if CONFIG_AVFILTER
2695         avfilter_graph_free(&is->agraph);
2696 #endif
2697         break;
2698     case AVMEDIA_TYPE_VIDEO:
2699         packet_queue_abort(&is->videoq);
2700
2701         /* note: we also signal this mutex to make sure we deblock the
2702            video thread in all cases */
2703         SDL_LockMutex(is->pictq_mutex);
2704         SDL_CondSignal(is->pictq_cond);
2705         SDL_UnlockMutex(is->pictq_mutex);
2706
2707         SDL_WaitThread(is->video_tid, NULL);
2708
2709         packet_queue_flush(&is->videoq);
2710         break;
2711     case AVMEDIA_TYPE_SUBTITLE:
2712         packet_queue_abort(&is->subtitleq);
2713
2714         /* note: we also signal this mutex to make sure we deblock the
2715            video thread in all cases */
2716         SDL_LockMutex(is->subpq_mutex);
2717         SDL_CondSignal(is->subpq_cond);
2718         SDL_UnlockMutex(is->subpq_mutex);
2719
2720         SDL_WaitThread(is->subtitle_tid, NULL);
2721
2722         packet_queue_flush(&is->subtitleq);
2723         break;
2724     default:
2725         break;
2726     }
2727
2728     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2729     avcodec_close(avctx);
2730     switch (avctx->codec_type) {
2731     case AVMEDIA_TYPE_AUDIO:
2732         is->audio_st = NULL;
2733         is->audio_stream = -1;
2734         break;
2735     case AVMEDIA_TYPE_VIDEO:
2736         is->video_st = NULL;
2737         is->video_stream = -1;
2738         break;
2739     case AVMEDIA_TYPE_SUBTITLE:
2740         is->subtitle_st = NULL;
2741         is->subtitle_stream = -1;
2742         break;
2743     default:
2744         break;
2745     }
2746 }
2747
2748 static int decode_interrupt_cb(void *ctx)
2749 {
2750     VideoState *is = ctx;
2751     return is->abort_request;
2752 }
2753
2754 static int is_realtime(AVFormatContext *s)
2755 {
2756     if(   !strcmp(s->iformat->name, "rtp")
2757        || !strcmp(s->iformat->name, "rtsp")
2758        || !strcmp(s->iformat->name, "sdp")
2759     )
2760         return 1;
2761
2762     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2763                  || !strncmp(s->filename, "udp:", 4)
2764                 )
2765     )
2766         return 1;
2767     return 0;
2768 }
2769
2770 /* this thread gets the stream from the disk or the network */
2771 static int read_thread(void *arg)
2772 {
2773     VideoState *is = arg;
2774     AVFormatContext *ic = NULL;
2775     int err, i, ret;
2776     int st_index[AVMEDIA_TYPE_NB];
2777     AVPacket pkt1, *pkt = &pkt1;
2778     int eof = 0;
2779     int64_t stream_start_time;
2780     int pkt_in_play_range = 0;
2781     AVDictionaryEntry *t;
2782     AVDictionary **opts;
2783     int orig_nb_streams;
2784     SDL_mutex *wait_mutex = SDL_CreateMutex();
2785
2786     memset(st_index, -1, sizeof(st_index));
2787     is->last_video_stream = is->video_stream = -1;
2788     is->last_audio_stream = is->audio_stream = -1;
2789     is->last_subtitle_stream = is->subtitle_stream = -1;
2790
2791     ic = avformat_alloc_context();
2792     ic->interrupt_callback.callback = decode_interrupt_cb;
2793     ic->interrupt_callback.opaque = is;
2794     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2795     if (err < 0) {
2796         print_error(is->filename, err);
2797         ret = -1;
2798         goto fail;
2799     }
2800     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2801         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2802         ret = AVERROR_OPTION_NOT_FOUND;
2803         goto fail;
2804     }
2805     is->ic = ic;
2806
2807     if (genpts)
2808         ic->flags |= AVFMT_FLAG_GENPTS;
2809
2810     av_format_inject_global_side_data(ic);
2811
2812     opts = setup_find_stream_info_opts(ic, codec_opts);
2813     orig_nb_streams = ic->nb_streams;
2814
2815     err = avformat_find_stream_info(ic, opts);
2816     if (err < 0) {
2817         av_log(NULL, AV_LOG_WARNING,
2818                "%s: could not find codec parameters\n", is->filename);
2819         ret = -1;
2820         goto fail;
2821     }
2822     for (i = 0; i < orig_nb_streams; i++)
2823         av_dict_free(&opts[i]);
2824     av_freep(&opts);
2825
2826     if (ic->pb)
2827         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2828
2829     if (seek_by_bytes < 0)
2830         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2831
2832     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2833
2834     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2835         window_title = av_asprintf("%s - %s", t->value, input_filename);
2836
2837     /* if seeking requested, we execute it */
2838     if (start_time != AV_NOPTS_VALUE) {
2839         int64_t timestamp;
2840
2841         timestamp = start_time;
2842         /* add the stream start time */
2843         if (ic->start_time != AV_NOPTS_VALUE)
2844             timestamp += ic->start_time;
2845         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2846         if (ret < 0) {
2847             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2848                     is->filename, (double)timestamp / AV_TIME_BASE);
2849         }
2850     }
2851
2852     is->realtime = is_realtime(ic);
2853
2854     for (i = 0; i < ic->nb_streams; i++)
2855         ic->streams[i]->discard = AVDISCARD_ALL;
2856     if (!video_disable)
2857         st_index[AVMEDIA_TYPE_VIDEO] =
2858             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2859                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2860     if (!audio_disable)
2861         st_index[AVMEDIA_TYPE_AUDIO] =
2862             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2863                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2864                                 st_index[AVMEDIA_TYPE_VIDEO],
2865                                 NULL, 0);
2866     if (!video_disable && !subtitle_disable)
2867         st_index[AVMEDIA_TYPE_SUBTITLE] =
2868             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2869                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2870                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2871                                  st_index[AVMEDIA_TYPE_AUDIO] :
2872                                  st_index[AVMEDIA_TYPE_VIDEO]),
2873                                 NULL, 0);
2874     if (show_status) {
2875         av_dump_format(ic, 0, is->filename, 0);
2876     }
2877
2878     is->show_mode = show_mode;
2879     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2880         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2881         AVCodecContext *avctx = st->codec;
2882         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2883         if (avctx->width)
2884             set_default_window_size(avctx->width, avctx->height, sar);
2885     }
2886
2887     /* open the streams */
2888     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2889         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2890     }
2891
2892     ret = -1;
2893     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2894         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2895     }
2896     if (is->show_mode == SHOW_MODE_NONE)
2897         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2898
2899     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2900         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2901     }
2902
2903     if (is->video_stream < 0 && is->audio_stream < 0) {
2904         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2905                is->filename);
2906         ret = -1;
2907         goto fail;
2908     }
2909
2910     if (infinite_buffer < 0 && is->realtime)
2911         infinite_buffer = 1;
2912
2913     for (;;) {
2914         if (is->abort_request)
2915             break;
2916         if (is->paused != is->last_paused) {
2917             is->last_paused = is->paused;
2918             if (is->paused)
2919                 is->read_pause_return = av_read_pause(ic);
2920             else
2921                 av_read_play(ic);
2922         }
2923 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2924         if (is->paused &&
2925                 (!strcmp(ic->iformat->name, "rtsp") ||
2926                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2927             /* wait 10 ms to avoid trying to get another packet */
2928             /* XXX: horrible */
2929             SDL_Delay(10);
2930             continue;
2931         }
2932 #endif
2933         if (is->seek_req) {
2934             int64_t seek_target = is->seek_pos;
2935             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2936             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2937 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2938 //      of the seek_pos/seek_rel variables
2939
2940             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2941             if (ret < 0) {
2942                 av_log(NULL, AV_LOG_ERROR,
2943                        "%s: error while seeking\n", is->ic->filename);
2944             } else {
2945                 if (is->audio_stream >= 0) {
2946                     packet_queue_flush(&is->audioq);
2947                     packet_queue_put(&is->audioq, &flush_pkt);
2948                 }
2949                 if (is->subtitle_stream >= 0) {
2950                     packet_queue_flush(&is->subtitleq);
2951                     packet_queue_put(&is->subtitleq, &flush_pkt);
2952                 }
2953                 if (is->video_stream >= 0) {
2954                     packet_queue_flush(&is->videoq);
2955                     packet_queue_put(&is->videoq, &flush_pkt);
2956                 }
2957                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2958                    set_clock(&is->extclk, NAN, 0);
2959                 } else {
2960                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2961                 }
2962             }
2963             is->seek_req = 0;
2964             is->queue_attachments_req = 1;
2965             eof = 0;
2966             if (is->paused)
2967                 step_to_next_frame(is);
2968         }
2969         if (is->queue_attachments_req) {
2970             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2971                 AVPacket copy;
2972                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
2973                     goto fail;
2974                 packet_queue_put(&is->videoq, &copy);
2975                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2976             }
2977             is->queue_attachments_req = 0;
2978         }
2979
2980         /* if the queue are full, no need to read more */
2981         if (infinite_buffer<1 &&
2982               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2983             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2984                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
2985                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2986                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
2987             /* wait 10 ms */
2988             SDL_LockMutex(wait_mutex);
2989             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2990             SDL_UnlockMutex(wait_mutex);
2991             continue;
2992         }
2993         if (!is->paused &&
2994             (!is->audio_st || is->audio_finished == is->audioq.serial) &&
2995             (!is->video_st || (is->video_finished == is->videoq.serial && pictq_nb_remaining(is) == 0))) {
2996             if (loop != 1 && (!loop || --loop)) {
2997                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2998             } else if (autoexit) {
2999                 ret = AVERROR_EOF;
3000                 goto fail;
3001             }
3002         }
3003         if (eof) {
3004             if (is->video_stream >= 0)
3005                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3006             if (is->audio_stream >= 0)
3007                 packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3008             if (is->subtitle_stream >= 0)
3009                 packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3010             SDL_Delay(10);
3011             eof=0;
3012             continue;
3013         }
3014         ret = av_read_frame(ic, pkt);
3015         if (ret < 0) {
3016             if (ret == AVERROR_EOF || avio_feof(ic->pb))
3017                 eof = 1;
3018             if (ic->pb && ic->pb->error)
3019                 break;
3020             SDL_LockMutex(wait_mutex);
3021             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3022             SDL_UnlockMutex(wait_mutex);
3023             continue;
3024         }
3025         /* check if packet is in play range specified by user, then queue, otherwise discard */
3026         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3027         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3028                 (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3029                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3030                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3031                 <= ((double)duration / 1000000);
3032         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3033             packet_queue_put(&is->audioq, pkt);
3034         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3035                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3036             packet_queue_put(&is->videoq, pkt);
3037         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3038             packet_queue_put(&is->subtitleq, pkt);
3039         } else {
3040             av_free_packet(pkt);
3041         }
3042     }
3043     /* wait until the end */
3044     while (!is->abort_request) {
3045         SDL_Delay(100);
3046     }
3047
3048     ret = 0;
3049  fail:
3050     /* close each stream */
3051     if (is->audio_stream >= 0)
3052         stream_component_close(is, is->audio_stream);
3053     if (is->video_stream >= 0)
3054         stream_component_close(is, is->video_stream);
3055     if (is->subtitle_stream >= 0)
3056         stream_component_close(is, is->subtitle_stream);
3057     if (is->ic) {
3058         avformat_close_input(&is->ic);
3059     }
3060
3061     if (ret != 0) {
3062         SDL_Event event;
3063
3064         event.type = FF_QUIT_EVENT;
3065         event.user.data1 = is;
3066         SDL_PushEvent(&event);
3067     }
3068     SDL_DestroyMutex(wait_mutex);
3069     return 0;
3070 }
3071
3072 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3073 {
3074     VideoState *is;
3075
3076     is = av_mallocz(sizeof(VideoState));
3077     if (!is)
3078         return NULL;
3079     av_strlcpy(is->filename, filename, sizeof(is->filename));
3080     is->iformat = iformat;
3081     is->ytop    = 0;
3082     is->xleft   = 0;
3083
3084     /* start video display */
3085     is->pictq_mutex = SDL_CreateMutex();
3086     is->pictq_cond  = SDL_CreateCond();
3087
3088     is->subpq_mutex = SDL_CreateMutex();
3089     is->subpq_cond  = SDL_CreateCond();
3090
3091     packet_queue_init(&is->videoq);
3092     packet_queue_init(&is->audioq);
3093     packet_queue_init(&is->subtitleq);
3094
3095     is->continue_read_thread = SDL_CreateCond();
3096
3097     init_clock(&is->vidclk, &is->videoq.serial);
3098     init_clock(&is->audclk, &is->audioq.serial);
3099     init_clock(&is->extclk, &is->extclk.serial);
3100     is->audio_clock_serial = -1;
3101     is->audio_last_serial = -1;
3102     is->av_sync_type = av_sync_type;
3103     is->read_tid     = SDL_CreateThread(read_thread, is);
3104     if (!is->read_tid) {
3105         av_free(is);
3106         return NULL;
3107     }
3108     return is;
3109 }
3110
3111 static void stream_cycle_channel(VideoState *is, int codec_type)
3112 {
3113     AVFormatContext *ic = is->ic;
3114     int start_index, stream_index;
3115     int old_index;
3116     AVStream *st;
3117     AVProgram *p = NULL;
3118     int nb_streams = is->ic->nb_streams;
3119
3120     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3121         start_index = is->last_video_stream;
3122         old_index = is->video_stream;
3123     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3124         start_index = is->last_audio_stream;
3125         old_index = is->audio_stream;
3126     } else {
3127         start_index = is->last_subtitle_stream;
3128         old_index = is->subtitle_stream;
3129     }
3130     stream_index = start_index;
3131
3132     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3133         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3134         if (p) {
3135             nb_streams = p->nb_stream_indexes;
3136             for (start_index = 0; start_index < nb_streams; start_index++)
3137                 if (p->stream_index[start_index] == stream_index)
3138                     break;
3139             if (start_index == nb_streams)
3140                 start_index = -1;
3141             stream_index = start_index;
3142         }
3143     }
3144
3145     for (;;) {
3146         if (++stream_index >= nb_streams)
3147         {
3148             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3149             {
3150                 stream_index = -1;
3151                 is->last_subtitle_stream = -1;
3152                 goto the_end;
3153             }
3154             if (start_index == -1)
3155                 return;
3156             stream_index = 0;
3157         }
3158         if (stream_index == start_index)
3159             return;
3160         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3161         if (st->codec->codec_type == codec_type) {
3162             /* check that parameters are OK */
3163             switch (codec_type) {
3164             case AVMEDIA_TYPE_AUDIO:
3165                 if (st->codec->sample_rate != 0 &&
3166                     st->codec->channels != 0)
3167                     goto the_end;
3168                 break;
3169             case AVMEDIA_TYPE_VIDEO:
3170             case AVMEDIA_TYPE_SUBTITLE:
3171                 goto the_end;
3172             default:
3173                 break;
3174             }
3175         }
3176     }
3177  the_end:
3178     if (p && stream_index != -1)
3179         stream_index = p->stream_index[stream_index];
3180     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3181            av_get_media_type_string(codec_type),
3182            old_index,
3183            stream_index);
3184
3185     stream_component_close(is, old_index);
3186     stream_component_open(is, stream_index);
3187 }
3188
3189
3190 static void toggle_full_screen(VideoState *is)
3191 {
3192 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3193     /* OS X needs to reallocate the SDL overlays */
3194     int i;
3195     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3196         is->pictq[i].reallocate = 1;
3197 #endif
3198     is_full_screen = !is_full_screen;
3199     video_open(is, 1, NULL);
3200 }
3201
3202 static void toggle_audio_display(VideoState *is)
3203 {
3204     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3205     int next = is->show_mode;
3206     do {
3207         next = (next + 1) % SHOW_MODE_NB;
3208     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3209     if (is->show_mode != next) {
3210         fill_rectangle(screen,
3211                     is->xleft, is->ytop, is->width, is->height,
3212                     bgcolor, 1);
3213         is->force_refresh = 1;
3214         is->show_mode = next;
3215     }
3216 }
3217
3218 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3219     double remaining_time = 0.0;
3220     SDL_PumpEvents();
3221     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3222         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3223             SDL_ShowCursor(0);
3224             cursor_hidden = 1;
3225         }
3226         if (remaining_time > 0.0)
3227             av_usleep((int64_t)(remaining_time * 1000000.0));
3228         remaining_time = REFRESH_RATE;
3229         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3230             video_refresh(is, &remaining_time);
3231         SDL_PumpEvents();
3232     }
3233 }
3234
3235 static void seek_chapter(VideoState *is, int incr)
3236 {
3237     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3238     int i;
3239
3240     if (!is->ic->nb_chapters)
3241         return;
3242
3243     /* find the current chapter */
3244     for (i = 0; i < is->ic->nb_chapters; i++) {
3245         AVChapter *ch = is->ic->chapters[i];
3246         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3247             i--;
3248             break;
3249         }
3250     }
3251
3252     i += incr;
3253     i = FFMAX(i, 0);
3254     if (i >= is->ic->nb_chapters)
3255         return;
3256
3257     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3258     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3259                                  AV_TIME_BASE_Q), 0, 0);
3260 }
3261
3262 /* handle an event sent by the GUI */
3263 static void event_loop(VideoState *cur_stream)
3264 {
3265     SDL_Event event;
3266     double incr, pos, frac;
3267
3268     for (;;) {
3269         double x;
3270         refresh_loop_wait_event(cur_stream, &event);
3271         switch (event.type) {
3272         case SDL_KEYDOWN:
3273             if (exit_on_keydown) {
3274                 do_exit(cur_stream);
3275                 break;
3276             }
3277             switch (event.key.keysym.sym) {
3278             case SDLK_ESCAPE:
3279             case SDLK_q:
3280                 do_exit(cur_stream);
3281                 break;
3282             case SDLK_f:
3283                 toggle_full_screen(cur_stream);
3284                 cur_stream->force_refresh = 1;
3285                 break;
3286             case SDLK_p:
3287             case SDLK_SPACE:
3288                 toggle_pause(cur_stream);
3289                 break;
3290             case SDLK_s: // S: Step to next frame
3291                 step_to_next_frame(cur_stream);
3292                 break;
3293             case SDLK_a:
3294                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3295                 break;
3296             case SDLK_v:
3297                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3298                 break;
3299             case SDLK_c:
3300                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3301                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3302                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3303                 break;
3304             case SDLK_t:
3305                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3306                 break;
3307             case SDLK_w:
3308 #if CONFIG_AVFILTER
3309                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3310                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3311                         cur_stream->vfilter_idx = 0;
3312                 } else {
3313                     cur_stream->vfilter_idx = 0;
3314                     toggle_audio_display(cur_stream);
3315                 }
3316 #else
3317                 toggle_audio_display(cur_stream);
3318 #endif
3319                 break;
3320             case SDLK_PAGEUP:
3321                 if (cur_stream->ic->nb_chapters <= 1) {
3322                     incr = 600.0;
3323                     goto do_seek;
3324                 }
3325                 seek_chapter(cur_stream, 1);
3326                 break;
3327             case SDLK_PAGEDOWN:
3328                 if (cur_stream->ic->nb_chapters <= 1) {
3329                     incr = -600.0;
3330                     goto do_seek;
3331                 }
3332                 seek_chapter(cur_stream, -1);
3333                 break;
3334             case SDLK_LEFT:
3335                 incr = -10.0;
3336                 goto do_seek;
3337             case SDLK_RIGHT:
3338                 incr = 10.0;
3339                 goto do_seek;
3340             case SDLK_UP:
3341                 incr = 60.0;
3342                 goto do_seek;
3343             case SDLK_DOWN:
3344                 incr = -60.0;
3345             do_seek:
3346                     if (seek_by_bytes) {
3347                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
3348                             pos = cur_stream->video_current_pos;
3349                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
3350                             pos = cur_stream->audio_pkt.pos;
3351                         } else
3352                             pos = avio_tell(cur_stream->ic->pb);
3353                         if (cur_stream->ic->bit_rate)
3354                             incr *= cur_stream->ic->bit_rate / 8.0;
3355                         else
3356                             incr *= 180000.0;
3357                         pos += incr;
3358                         stream_seek(cur_stream, pos, incr, 1);
3359                     } else {
3360                         pos = get_master_clock(cur_stream);
3361                         if (isnan(pos))
3362                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3363                         pos += incr;
3364                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3365                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3366                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3367                     }
3368                 break;
3369             default:
3370                 break;
3371             }
3372             break;
3373         case SDL_VIDEOEXPOSE:
3374             cur_stream->force_refresh = 1;
3375             break;
3376         case SDL_MOUSEBUTTONDOWN:
3377             if (exit_on_mousedown) {
3378                 do_exit(cur_stream);
3379                 break;
3380             }
3381         case SDL_MOUSEMOTION:
3382             if (cursor_hidden) {
3383                 SDL_ShowCursor(1);
3384                 cursor_hidden = 0;
3385             }
3386             cursor_last_shown = av_gettime_relative();
3387             if (event.type == SDL_MOUSEBUTTONDOWN) {
3388                 x = event.button.x;
3389             } else {
3390                 if (event.motion.state != SDL_PRESSED)
3391                     break;
3392                 x = event.motion.x;
3393             }
3394                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3395                     uint64_t size =  avio_size(cur_stream->ic->pb);
3396                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3397                 } else {
3398                     int64_t ts;
3399                     int ns, hh, mm, ss;
3400                     int tns, thh, tmm, tss;
3401                     tns  = cur_stream->ic->duration / 1000000LL;
3402                     thh  = tns / 3600;
3403                     tmm  = (tns % 3600) / 60;
3404                     tss  = (tns % 60);
3405                     frac = x / cur_stream->width;
3406                     ns   = frac * tns;
3407                     hh   = ns / 3600;
3408                     mm   = (ns % 3600) / 60;
3409                     ss   = (ns % 60);
3410                     av_log(NULL, AV_LOG_INFO,
3411                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3412                             hh, mm, ss, thh, tmm, tss);
3413                     ts = frac * cur_stream->ic->duration;
3414                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3415                         ts += cur_stream->ic->start_time;
3416                     stream_seek(cur_stream, ts, 0, 0);
3417                 }
3418             break;
3419         case SDL_VIDEORESIZE:
3420                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3421                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
3422                 if (!screen) {
3423                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3424                     do_exit(cur_stream);
3425                 }
3426                 screen_width  = cur_stream->width  = screen->w;
3427                 screen_height = cur_stream->height = screen->h;
3428                 cur_stream->force_refresh = 1;
3429             break;
3430         case SDL_QUIT:
3431         case FF_QUIT_EVENT:
3432             do_exit(cur_stream);
3433             break;
3434         case FF_ALLOC_EVENT:
3435             alloc_picture(event.user.data1);
3436             break;
3437         default:
3438             break;
3439         }