2 * FFplay : Simple Media Player based on the ffmpeg libraries
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/avstring.h"
25 #include "libavformat/avformat.h"
26 #include "libavformat/rtsp.h"
27 #include "libavdevice/avdevice.h"
28 #include "libswscale/swscale.h"
29 #include "libavcodec/audioconvert.h"
30 #include "libavcodec/colorspace.h"
31 #include "libavcodec/opt.h"
36 #include <SDL_thread.h>
39 #undef main /* We don't want SDL to override our main() */
44 const char program_name[] = "FFplay";
45 const int program_birth_year = 2003;
49 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
50 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
51 #define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
53 /* SDL audio buffer size, in samples. Should be small to have precise
54 A/V sync as SDL does not have hardware buffer fullness info. */
55 #define SDL_AUDIO_BUFFER_SIZE 1024
57 /* no AV sync correction is done if below the AV sync threshold */
58 #define AV_SYNC_THRESHOLD 0.01
59 /* no AV correction is done if too big error */
60 #define AV_NOSYNC_THRESHOLD 10.0
62 /* maximum audio speed change to get correct sync */
63 #define SAMPLE_CORRECTION_PERCENT_MAX 10
65 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
66 #define AUDIO_DIFF_AVG_NB 20
68 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
69 #define SAMPLE_ARRAY_SIZE (2*65536)
71 static int sws_flags = SWS_BICUBIC;
73 typedef struct PacketQueue {
74 AVPacketList *first_pkt, *last_pkt;
82 #define VIDEO_PICTURE_QUEUE_SIZE 1
83 #define SUBPICTURE_QUEUE_SIZE 4
85 typedef struct VideoPicture {
86 double pts; ///<presentation time stamp for this picture
88 int width, height; /* source height & width */
92 typedef struct SubPicture {
93 double pts; /* presentation time stamp for this picture */
98 AV_SYNC_AUDIO_MASTER, /* default choice */
100 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
103 typedef struct VideoState {
104 SDL_Thread *parse_tid;
105 SDL_Thread *video_tid;
106 AVInputFormat *iformat;
116 int dtg_active_format;
121 double external_clock; /* external clock base */
122 int64_t external_clock_time;
125 double audio_diff_cum; /* used for AV difference average computation */
126 double audio_diff_avg_coef;
127 double audio_diff_threshold;
128 int audio_diff_avg_count;
131 int audio_hw_buf_size;
132 /* samples output by the codec. we reserve more space for avsync
134 DECLARE_ALIGNED(16,uint8_t,audio_buf1[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
135 DECLARE_ALIGNED(16,uint8_t,audio_buf2[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
137 unsigned int audio_buf_size; /* in bytes */
138 int audio_buf_index; /* in bytes */
139 AVPacket audio_pkt_temp;
141 enum SampleFormat audio_src_fmt;
142 AVAudioConvert *reformat_ctx;
144 int show_audio; /* if true, display audio samples */
145 int16_t sample_array[SAMPLE_ARRAY_SIZE];
146 int sample_array_index;
149 SDL_Thread *subtitle_tid;
151 int subtitle_stream_changed;
152 AVStream *subtitle_st;
153 PacketQueue subtitleq;
154 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
155 int subpq_size, subpq_rindex, subpq_windex;
156 SDL_mutex *subpq_mutex;
157 SDL_cond *subpq_cond;
160 double frame_last_pts;
161 double frame_last_delay;
162 double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
166 double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
167 int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
168 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
169 int pictq_size, pictq_rindex, pictq_windex;
170 SDL_mutex *pictq_mutex;
171 SDL_cond *pictq_cond;
172 struct SwsContext *img_convert_ctx;
174 // QETimer *video_timer;
176 int width, height, xleft, ytop;
179 static void show_help(void);
180 static int audio_write_get_buf_size(VideoState *is);
182 /* options specified by the user */
183 static AVInputFormat *file_iformat;
184 static const char *input_filename;
185 static int fs_screen_width;
186 static int fs_screen_height;
187 static int screen_width = 0;
188 static int screen_height = 0;
189 static int frame_width = 0;
190 static int frame_height = 0;
191 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
192 static int audio_disable;
193 static int video_disable;
194 static int wanted_audio_stream= 0;
195 static int wanted_video_stream= 0;
196 static int wanted_subtitle_stream= -1;
197 static int seek_by_bytes;
198 static int display_disable;
199 static int show_status;
200 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
201 static int64_t start_time = AV_NOPTS_VALUE;
202 static int debug = 0;
203 static int debug_mv = 0;
205 static int thread_count = 1;
206 static int workaround_bugs = 1;
208 static int genpts = 0;
209 static int lowres = 0;
210 static int idct = FF_IDCT_AUTO;
211 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
212 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
213 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
214 static int error_recognition = FF_ER_CAREFUL;
215 static int error_concealment = 3;
216 static int decoder_reorder_pts= 0;
218 /* current context */
219 static int is_full_screen;
220 static VideoState *cur_stream;
221 static int64_t audio_callback_time;
223 static AVPacket flush_pkt;
225 #define FF_ALLOC_EVENT (SDL_USEREVENT)
226 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
227 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
229 static SDL_Surface *screen;
231 /* packet queue handling */
232 static void packet_queue_init(PacketQueue *q)
234 memset(q, 0, sizeof(PacketQueue));
235 q->mutex = SDL_CreateMutex();
236 q->cond = SDL_CreateCond();
239 static void packet_queue_flush(PacketQueue *q)
241 AVPacketList *pkt, *pkt1;
243 SDL_LockMutex(q->mutex);
244 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
246 av_free_packet(&pkt->pkt);
253 SDL_UnlockMutex(q->mutex);
256 static void packet_queue_end(PacketQueue *q)
258 packet_queue_flush(q);
259 SDL_DestroyMutex(q->mutex);
260 SDL_DestroyCond(q->cond);
263 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
267 /* duplicate the packet */
268 if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
271 pkt1 = av_malloc(sizeof(AVPacketList));
278 SDL_LockMutex(q->mutex);
284 q->last_pkt->next = pkt1;
287 q->size += pkt1->pkt.size + sizeof(*pkt1);
288 /* XXX: should duplicate packet data in DV case */
289 SDL_CondSignal(q->cond);
291 SDL_UnlockMutex(q->mutex);
295 static void packet_queue_abort(PacketQueue *q)
297 SDL_LockMutex(q->mutex);
299 q->abort_request = 1;
301 SDL_CondSignal(q->cond);
303 SDL_UnlockMutex(q->mutex);
306 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
307 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
312 SDL_LockMutex(q->mutex);
315 if (q->abort_request) {
322 q->first_pkt = pkt1->next;
326 q->size -= pkt1->pkt.size + sizeof(*pkt1);
335 SDL_CondWait(q->cond, q->mutex);
338 SDL_UnlockMutex(q->mutex);
342 static inline void fill_rectangle(SDL_Surface *screen,
343 int x, int y, int w, int h, int color)
350 SDL_FillRect(screen, &rect, color);
354 /* draw only the border of a rectangle */
355 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
359 /* fill the background */
363 w2 = s->width - (x + w);
369 h2 = s->height - (y + h);
372 fill_rectangle(screen,
376 fill_rectangle(screen,
377 s->xleft + s->width - w2, s->ytop,
380 fill_rectangle(screen,
381 s->xleft + w1, s->ytop,
382 s->width - w1 - w2, h1,
384 fill_rectangle(screen,
385 s->xleft + w1, s->ytop + s->height - h2,
386 s->width - w1 - w2, h2,
391 #define ALPHA_BLEND(a, oldp, newp, s)\
392 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
394 #define RGBA_IN(r, g, b, a, s)\
396 unsigned int v = ((const uint32_t *)(s))[0];\
397 a = (v >> 24) & 0xff;\
398 r = (v >> 16) & 0xff;\
399 g = (v >> 8) & 0xff;\
403 #define YUVA_IN(y, u, v, a, s, pal)\
405 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
406 a = (val >> 24) & 0xff;\
407 y = (val >> 16) & 0xff;\
408 u = (val >> 8) & 0xff;\
412 #define YUVA_OUT(d, y, u, v, a)\
414 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
420 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
422 int wrap, wrap3, width2, skip2;
423 int y, u, v, a, u1, v1, a1, w, h;
424 uint8_t *lum, *cb, *cr;
427 int dstx, dsty, dstw, dsth;
429 dstw = av_clip(rect->w, 0, imgw);
430 dsth = av_clip(rect->h, 0, imgh);
431 dstx = av_clip(rect->x, 0, imgw - dstw);
432 dsty = av_clip(rect->y, 0, imgh - dsth);
433 lum = dst->data[0] + dsty * dst->linesize[0];
434 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
435 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
437 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
439 wrap = dst->linesize[0];
440 wrap3 = rect->pict.linesize[0];
441 p = rect->pict.data[0];
442 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
450 YUVA_IN(y, u, v, a, p, pal);
451 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
452 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
453 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
459 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
460 YUVA_IN(y, u, v, a, p, pal);
464 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
466 YUVA_IN(y, u, v, a, p + BPP, pal);
470 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
471 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
472 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
479 YUVA_IN(y, u, v, a, p, pal);
480 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
481 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
482 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
486 p += wrap3 - dstw * BPP;
487 lum += wrap - dstw - dstx;
488 cb += dst->linesize[1] - width2 - skip2;
489 cr += dst->linesize[2] - width2 - skip2;
491 for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
497 YUVA_IN(y, u, v, a, p, pal);
501 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
504 YUVA_IN(y, u, v, a, p, pal);
508 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
509 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
510 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
516 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
517 YUVA_IN(y, u, v, a, p, pal);
521 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
523 YUVA_IN(y, u, v, a, p + BPP, pal);
527 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
531 YUVA_IN(y, u, v, a, p, pal);
535 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
537 YUVA_IN(y, u, v, a, p + BPP, pal);
541 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
543 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
544 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
548 p += -wrap3 + 2 * BPP;
552 YUVA_IN(y, u, v, a, p, pal);
556 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
559 YUVA_IN(y, u, v, a, p, pal);
563 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
564 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
565 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
571 p += wrap3 + (wrap3 - dstw * BPP);
572 lum += wrap + (wrap - dstw - dstx);
573 cb += dst->linesize[1] - width2 - skip2;
574 cr += dst->linesize[2] - width2 - skip2;
576 /* handle odd height */
583 YUVA_IN(y, u, v, a, p, pal);
584 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
585 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
586 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
592 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
593 YUVA_IN(y, u, v, a, p, pal);
597 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
599 YUVA_IN(y, u, v, a, p + BPP, pal);
603 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
604 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
605 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
612 YUVA_IN(y, u, v, a, p, pal);
613 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
614 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
615 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
620 static void free_subpicture(SubPicture *sp)
624 for (i = 0; i < sp->sub.num_rects; i++)
626 av_freep(&sp->sub.rects[i]->pict.data[0]);
627 av_freep(&sp->sub.rects[i]->pict.data[1]);
628 av_freep(&sp->sub.rects[i]);
631 av_free(sp->sub.rects);
633 memset(&sp->sub, 0, sizeof(AVSubtitle));
636 static void video_image_display(VideoState *is)
642 int width, height, x, y;
646 vp = &is->pictq[is->pictq_rindex];
648 /* XXX: use variable in the frame */
649 if (is->video_st->sample_aspect_ratio.num)
650 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
651 else if (is->video_st->codec->sample_aspect_ratio.num)
652 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
655 if (aspect_ratio <= 0.0)
657 aspect_ratio *= (float)is->video_st->codec->width / is->video_st->codec->height;
658 /* if an active format is indicated, then it overrides the
661 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
662 is->dtg_active_format = is->video_st->codec->dtg_active_format;
663 printf("dtg_active_format=%d\n", is->dtg_active_format);
667 switch(is->video_st->codec->dtg_active_format) {
668 case FF_DTG_AFD_SAME:
673 aspect_ratio = 4.0 / 3.0;
675 case FF_DTG_AFD_16_9:
676 aspect_ratio = 16.0 / 9.0;
678 case FF_DTG_AFD_14_9:
679 aspect_ratio = 14.0 / 9.0;
681 case FF_DTG_AFD_4_3_SP_14_9:
682 aspect_ratio = 14.0 / 9.0;
684 case FF_DTG_AFD_16_9_SP_14_9:
685 aspect_ratio = 14.0 / 9.0;
687 case FF_DTG_AFD_SP_4_3:
688 aspect_ratio = 4.0 / 3.0;
695 if (is->subpq_size > 0)
697 sp = &is->subpq[is->subpq_rindex];
699 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
701 SDL_LockYUVOverlay (vp->bmp);
703 pict.data[0] = vp->bmp->pixels[0];
704 pict.data[1] = vp->bmp->pixels[2];
705 pict.data[2] = vp->bmp->pixels[1];
707 pict.linesize[0] = vp->bmp->pitches[0];
708 pict.linesize[1] = vp->bmp->pitches[2];
709 pict.linesize[2] = vp->bmp->pitches[1];
711 for (i = 0; i < sp->sub.num_rects; i++)
712 blend_subrect(&pict, sp->sub.rects[i],
713 vp->bmp->w, vp->bmp->h);
715 SDL_UnlockYUVOverlay (vp->bmp);
721 /* XXX: we suppose the screen has a 1.0 pixel ratio */
723 width = ((int)rint(height * aspect_ratio)) & ~1;
724 if (width > is->width) {
726 height = ((int)rint(width / aspect_ratio)) & ~1;
728 x = (is->width - width) / 2;
729 y = (is->height - height) / 2;
730 if (!is->no_background) {
731 /* fill the background */
732 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
734 is->no_background = 0;
736 rect.x = is->xleft + x;
737 rect.y = is->ytop + y;
740 SDL_DisplayYUVOverlay(vp->bmp, &rect);
743 fill_rectangle(screen,
744 is->xleft, is->ytop, is->width, is->height,
745 QERGB(0x00, 0x00, 0x00));
750 static inline int compute_mod(int a, int b)
759 static void video_audio_display(VideoState *s)
761 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
762 int ch, channels, h, h2, bgcolor, fgcolor;
765 /* compute display index : center on currently output samples */
766 channels = s->audio_st->codec->channels;
767 nb_display_channels = channels;
770 delay = audio_write_get_buf_size(s);
773 /* to be more precise, we take into account the time spent since
774 the last buffer computation */
775 if (audio_callback_time) {
776 time_diff = av_gettime() - audio_callback_time;
777 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
780 delay -= s->width / 2;
781 if (delay < s->width)
784 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
787 for(i=0; i<1000; i+=channels){
788 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
789 int a= s->sample_array[idx];
790 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
791 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
792 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
794 if(h<score && (b^c)<0){
800 s->last_i_start = i_start;
802 i_start = s->last_i_start;
805 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
806 fill_rectangle(screen,
807 s->xleft, s->ytop, s->width, s->height,
810 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
812 /* total height for one channel */
813 h = s->height / nb_display_channels;
814 /* graph height / 2 */
816 for(ch = 0;ch < nb_display_channels; ch++) {
818 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
819 for(x = 0; x < s->width; x++) {
820 y = (s->sample_array[i] * h2) >> 15;
827 fill_rectangle(screen,
828 s->xleft + x, ys, 1, y,
831 if (i >= SAMPLE_ARRAY_SIZE)
832 i -= SAMPLE_ARRAY_SIZE;
836 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
838 for(ch = 1;ch < nb_display_channels; ch++) {
839 y = s->ytop + ch * h;
840 fill_rectangle(screen,
841 s->xleft, y, s->width, 1,
844 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
847 static int video_open(VideoState *is){
848 int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
851 if(is_full_screen) flags |= SDL_FULLSCREEN;
852 else flags |= SDL_RESIZABLE;
854 if (is_full_screen && fs_screen_width) {
856 h = fs_screen_height;
857 } else if(!is_full_screen && screen_width){
860 }else if (is->video_st && is->video_st->codec->width){
861 w = is->video_st->codec->width;
862 h = is->video_st->codec->height;
868 screen = SDL_SetVideoMode(w, h, 0, flags);
870 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
871 screen = SDL_SetVideoMode(w, h, 24, flags);
874 fprintf(stderr, "SDL: could not set video mode - exiting\n");
877 SDL_WM_SetCaption("FFplay", "FFplay");
879 is->width = screen->w;
880 is->height = screen->h;
885 /* display the current picture, if any */
886 static void video_display(VideoState *is)
889 video_open(cur_stream);
890 if (is->audio_st && is->show_audio)
891 video_audio_display(is);
892 else if (is->video_st)
893 video_image_display(is);
896 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
899 event.type = FF_REFRESH_EVENT;
900 event.user.data1 = opaque;
901 SDL_PushEvent(&event);
902 return 0; /* 0 means stop timer */
905 /* schedule a video refresh in 'delay' ms */
906 static void schedule_refresh(VideoState *is, int delay)
908 if(!delay) delay=1; //SDL seems to be buggy when the delay is 0
909 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
912 /* get the current audio clock value */
913 static double get_audio_clock(VideoState *is)
916 int hw_buf_size, bytes_per_sec;
917 pts = is->audio_clock;
918 hw_buf_size = audio_write_get_buf_size(is);
921 bytes_per_sec = is->audio_st->codec->sample_rate *
922 2 * is->audio_st->codec->channels;
925 pts -= (double)hw_buf_size / bytes_per_sec;
929 /* get the current video clock value */
930 static double get_video_clock(VideoState *is)
936 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
938 return is->video_current_pts + delta;
941 /* get the current external clock value */
942 static double get_external_clock(VideoState *is)
946 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
949 /* get the current master clock value */
950 static double get_master_clock(VideoState *is)
954 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
956 val = get_video_clock(is);
958 val = get_audio_clock(is);
959 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
961 val = get_audio_clock(is);
963 val = get_video_clock(is);
965 val = get_external_clock(is);
970 /* seek in the stream */
971 static void stream_seek(VideoState *is, int64_t pos, int64_t rel)
977 is->seek_flags |= AVSEEK_FLAG_BYTE;
982 /* pause or resume the video */
983 static void stream_pause(VideoState *is)
985 is->paused = !is->paused;
987 is->video_current_pts = get_video_clock(is);
988 is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
992 static double compute_frame_delay(double frame_current_pts, VideoState *is)
994 double actual_delay, delay, sync_threshold, ref_clock, diff;
996 /* compute nominal delay */
997 delay = frame_current_pts - is->frame_last_pts;
998 if (delay <= 0 || delay >= 10.0) {
999 /* if incorrect delay, use previous one */
1000 delay = is->frame_last_delay;
1002 is->frame_last_delay = delay;
1004 is->frame_last_pts = frame_current_pts;
1006 /* update delay to follow master synchronisation source */
1007 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1008 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1009 /* if video is slave, we try to correct big delays by
1010 duplicating or deleting a frame */
1011 ref_clock = get_master_clock(is);
1012 diff = frame_current_pts - ref_clock;
1014 /* skip or repeat frame. We take into account the
1015 delay to compute the threshold. I still don't know
1016 if it is the best guess */
1017 sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1018 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1019 if (diff <= -sync_threshold)
1021 else if (diff >= sync_threshold)
1026 is->frame_timer += delay;
1027 /* compute the REAL delay (we need to do that to avoid
1029 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
1030 if (actual_delay < 0.010) {
1031 /* XXX: should skip picture */
1032 actual_delay = 0.010;
1035 #if defined(DEBUG_SYNC)
1036 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1037 delay, actual_delay, frame_current_pts, -diff);
1040 return actual_delay;
1043 /* called to display each frame */
1044 static void video_refresh_timer(void *opaque)
1046 VideoState *is = opaque;
1049 SubPicture *sp, *sp2;
1052 if (is->pictq_size == 0) {
1053 /* if no picture, need to wait */
1054 schedule_refresh(is, 1);
1056 /* dequeue the picture */
1057 vp = &is->pictq[is->pictq_rindex];
1059 /* update current video pts */
1060 is->video_current_pts = vp->pts;
1061 is->video_current_pts_time = av_gettime();
1063 /* launch timer for next picture */
1064 schedule_refresh(is, (int)(compute_frame_delay(vp->pts, is) * 1000 + 0.5));
1066 if(is->subtitle_st) {
1067 if (is->subtitle_stream_changed) {
1068 SDL_LockMutex(is->subpq_mutex);
1070 while (is->subpq_size) {
1071 free_subpicture(&is->subpq[is->subpq_rindex]);
1073 /* update queue size and signal for next picture */
1074 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1075 is->subpq_rindex = 0;
1079 is->subtitle_stream_changed = 0;
1081 SDL_CondSignal(is->subpq_cond);
1082 SDL_UnlockMutex(is->subpq_mutex);
1084 if (is->subpq_size > 0) {
1085 sp = &is->subpq[is->subpq_rindex];
1087 if (is->subpq_size > 1)
1088 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1092 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1093 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1095 free_subpicture(sp);
1097 /* update queue size and signal for next picture */
1098 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1099 is->subpq_rindex = 0;
1101 SDL_LockMutex(is->subpq_mutex);
1103 SDL_CondSignal(is->subpq_cond);
1104 SDL_UnlockMutex(is->subpq_mutex);
1110 /* display picture */
1113 /* update queue size and signal for next picture */
1114 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1115 is->pictq_rindex = 0;
1117 SDL_LockMutex(is->pictq_mutex);
1119 SDL_CondSignal(is->pictq_cond);
1120 SDL_UnlockMutex(is->pictq_mutex);
1122 } else if (is->audio_st) {
1123 /* draw the next audio frame */
1125 schedule_refresh(is, 40);
1127 /* if only audio stream, then display the audio bars (better
1128 than nothing, just to test the implementation */
1130 /* display picture */
1133 schedule_refresh(is, 100);
1136 static int64_t last_time;
1138 int aqsize, vqsize, sqsize;
1141 cur_time = av_gettime();
1142 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
1147 aqsize = is->audioq.size;
1149 vqsize = is->videoq.size;
1150 if (is->subtitle_st)
1151 sqsize = is->subtitleq.size;
1153 if (is->audio_st && is->video_st)
1154 av_diff = get_audio_clock(is) - get_video_clock(is);
1155 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB \r",
1156 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
1158 last_time = cur_time;
1163 /* allocate a picture (needs to do that in main thread to avoid
1164 potential locking problems */
1165 static void alloc_picture(void *opaque)
1167 VideoState *is = opaque;
1170 vp = &is->pictq[is->pictq_windex];
1173 SDL_FreeYUVOverlay(vp->bmp);
1176 /* XXX: use generic function */
1177 /* XXX: disable overlay if no hardware acceleration or if RGB format */
1178 switch(is->video_st->codec->pix_fmt) {
1179 case PIX_FMT_YUV420P:
1180 case PIX_FMT_YUV422P:
1181 case PIX_FMT_YUV444P:
1182 case PIX_FMT_YUYV422:
1183 case PIX_FMT_YUV410P:
1184 case PIX_FMT_YUV411P:
1192 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
1193 is->video_st->codec->height,
1196 vp->width = is->video_st->codec->width;
1197 vp->height = is->video_st->codec->height;
1199 SDL_LockMutex(is->pictq_mutex);
1201 SDL_CondSignal(is->pictq_cond);
1202 SDL_UnlockMutex(is->pictq_mutex);
1207 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1209 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
1214 /* wait until we have space to put a new picture */
1215 SDL_LockMutex(is->pictq_mutex);
1216 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1217 !is->videoq.abort_request) {
1218 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1220 SDL_UnlockMutex(is->pictq_mutex);
1222 if (is->videoq.abort_request)
1225 vp = &is->pictq[is->pictq_windex];
1227 /* alloc or resize hardware picture buffer */
1229 vp->width != is->video_st->codec->width ||
1230 vp->height != is->video_st->codec->height) {
1235 /* the allocation must be done in the main thread to avoid
1237 event.type = FF_ALLOC_EVENT;
1238 event.user.data1 = is;
1239 SDL_PushEvent(&event);
1241 /* wait until the picture is allocated */
1242 SDL_LockMutex(is->pictq_mutex);
1243 while (!vp->allocated && !is->videoq.abort_request) {
1244 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1246 SDL_UnlockMutex(is->pictq_mutex);
1248 if (is->videoq.abort_request)
1252 /* if the frame is not skipped, then display it */
1256 /* get a pointer on the bitmap */
1257 SDL_LockYUVOverlay (vp->bmp);
1259 dst_pix_fmt = PIX_FMT_YUV420P;
1260 memset(&pict,0,sizeof(AVPicture));
1261 pict.data[0] = vp->bmp->pixels[0];
1262 pict.data[1] = vp->bmp->pixels[2];
1263 pict.data[2] = vp->bmp->pixels[1];
1265 pict.linesize[0] = vp->bmp->pitches[0];
1266 pict.linesize[1] = vp->bmp->pitches[2];
1267 pict.linesize[2] = vp->bmp->pitches[1];
1268 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1269 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1270 is->video_st->codec->width, is->video_st->codec->height,
1271 is->video_st->codec->pix_fmt,
1272 is->video_st->codec->width, is->video_st->codec->height,
1273 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1274 if (is->img_convert_ctx == NULL) {
1275 fprintf(stderr, "Cannot initialize the conversion context\n");
1278 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1279 0, is->video_st->codec->height, pict.data, pict.linesize);
1280 /* update the bitmap content */
1281 SDL_UnlockYUVOverlay(vp->bmp);
1285 /* now we can update the picture count */
1286 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1287 is->pictq_windex = 0;
1288 SDL_LockMutex(is->pictq_mutex);
1290 SDL_UnlockMutex(is->pictq_mutex);
1296 * compute the exact PTS for the picture if it is omitted in the stream
1297 * @param pts1 the dts of the pkt / pts of the frame
1299 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
1301 double frame_delay, pts;
1306 /* update video clock with pts, if present */
1307 is->video_clock = pts;
1309 pts = is->video_clock;
1311 /* update video clock for next frame */
1312 frame_delay = av_q2d(is->video_st->codec->time_base);
1313 /* for MPEG2, the frame can be repeated, so we update the
1314 clock accordingly */
1315 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1316 is->video_clock += frame_delay;
1318 #if defined(DEBUG_SYNC) && 0
1321 if (src_frame->pict_type == FF_B_TYPE)
1323 else if (src_frame->pict_type == FF_I_TYPE)
1327 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1331 return queue_picture(is, src_frame, pts);
1334 static int video_thread(void *arg)
1336 VideoState *is = arg;
1337 AVPacket pkt1, *pkt = &pkt1;
1338 int len1, got_picture;
1339 AVFrame *frame= avcodec_alloc_frame();
1343 while (is->paused && !is->videoq.abort_request) {
1346 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1349 if(pkt->data == flush_pkt.data){
1350 avcodec_flush_buffers(is->video_st->codec);
1354 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1355 this packet, if any */
1356 is->video_st->codec->reordered_opaque= pkt->pts;
1357 len1 = avcodec_decode_video2(is->video_st->codec,
1358 frame, &got_picture,
1361 if( (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
1362 && frame->reordered_opaque != AV_NOPTS_VALUE)
1363 pts= frame->reordered_opaque;
1364 else if(pkt->dts != AV_NOPTS_VALUE)
1368 pts *= av_q2d(is->video_st->time_base);
1373 if (output_picture2(is, frame, pts) < 0)
1376 av_free_packet(pkt);
1379 stream_pause(cur_stream);
1386 static int subtitle_thread(void *arg)
1388 VideoState *is = arg;
1390 AVPacket pkt1, *pkt = &pkt1;
1391 int len1, got_subtitle;
1394 int r, g, b, y, u, v, a;
1397 while (is->paused && !is->subtitleq.abort_request) {
1400 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1403 if(pkt->data == flush_pkt.data){
1404 avcodec_flush_buffers(is->subtitle_st->codec);
1407 SDL_LockMutex(is->subpq_mutex);
1408 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1409 !is->subtitleq.abort_request) {
1410 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1412 SDL_UnlockMutex(is->subpq_mutex);
1414 if (is->subtitleq.abort_request)
1417 sp = &is->subpq[is->subpq_windex];
1419 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1420 this packet, if any */
1422 if (pkt->pts != AV_NOPTS_VALUE)
1423 pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1425 len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1426 &sp->sub, &got_subtitle,
1430 if (got_subtitle && sp->sub.format == 0) {
1433 for (i = 0; i < sp->sub.num_rects; i++)
1435 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1437 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1438 y = RGB_TO_Y_CCIR(r, g, b);
1439 u = RGB_TO_U_CCIR(r, g, b, 0);
1440 v = RGB_TO_V_CCIR(r, g, b, 0);
1441 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1445 /* now we can update the picture count */
1446 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1447 is->subpq_windex = 0;
1448 SDL_LockMutex(is->subpq_mutex);
1450 SDL_UnlockMutex(is->subpq_mutex);
1452 av_free_packet(pkt);
1455 // stream_pause(cur_stream);
1461 /* copy samples for viewing in editor window */
1462 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1464 int size, len, channels;
1466 channels = is->audio_st->codec->channels;
1468 size = samples_size / sizeof(short);
1470 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1473 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1475 is->sample_array_index += len;
1476 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1477 is->sample_array_index = 0;
1482 /* return the new audio buffer size (samples can be added or deleted
1483 to get better sync if video or external master clock) */
1484 static int synchronize_audio(VideoState *is, short *samples,
1485 int samples_size1, double pts)
1487 int n, samples_size;
1490 n = 2 * is->audio_st->codec->channels;
1491 samples_size = samples_size1;
1493 /* if not master, then we try to remove or add samples to correct the clock */
1494 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1495 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1496 double diff, avg_diff;
1497 int wanted_size, min_size, max_size, nb_samples;
1499 ref_clock = get_master_clock(is);
1500 diff = get_audio_clock(is) - ref_clock;
1502 if (diff < AV_NOSYNC_THRESHOLD) {
1503 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1504 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1505 /* not enough measures to have a correct estimate */
1506 is->audio_diff_avg_count++;
1508 /* estimate the A-V difference */
1509 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1511 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1512 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1513 nb_samples = samples_size / n;
1515 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1516 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1517 if (wanted_size < min_size)
1518 wanted_size = min_size;
1519 else if (wanted_size > max_size)
1520 wanted_size = max_size;
1522 /* add or remove samples to correction the synchro */
1523 if (wanted_size < samples_size) {
1524 /* remove samples */
1525 samples_size = wanted_size;
1526 } else if (wanted_size > samples_size) {
1527 uint8_t *samples_end, *q;
1531 nb = (samples_size - wanted_size);
1532 samples_end = (uint8_t *)samples + samples_size - n;
1533 q = samples_end + n;
1535 memcpy(q, samples_end, n);
1539 samples_size = wanted_size;
1543 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1544 diff, avg_diff, samples_size - samples_size1,
1545 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1549 /* too big difference : may be initial PTS errors, so
1551 is->audio_diff_avg_count = 0;
1552 is->audio_diff_cum = 0;
1556 return samples_size;
1559 /* decode one audio frame and returns its uncompressed size */
1560 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1562 AVPacket *pkt_temp = &is->audio_pkt_temp;
1563 AVPacket *pkt = &is->audio_pkt;
1564 AVCodecContext *dec= is->audio_st->codec;
1565 int n, len1, data_size;
1569 /* NOTE: the audio packet can contain several frames */
1570 while (pkt_temp->size > 0) {
1571 data_size = sizeof(is->audio_buf1);
1572 len1 = avcodec_decode_audio3(dec,
1573 (int16_t *)is->audio_buf1, &data_size,
1576 /* if error, we skip the frame */
1581 pkt_temp->data += len1;
1582 pkt_temp->size -= len1;
1586 if (dec->sample_fmt != is->audio_src_fmt) {
1587 if (is->reformat_ctx)
1588 av_audio_convert_free(is->reformat_ctx);
1589 is->reformat_ctx= av_audio_convert_alloc(SAMPLE_FMT_S16, 1,
1590 dec->sample_fmt, 1, NULL, 0);
1591 if (!is->reformat_ctx) {
1592 fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
1593 avcodec_get_sample_fmt_name(dec->sample_fmt),
1594 avcodec_get_sample_fmt_name(SAMPLE_FMT_S16));
1597 is->audio_src_fmt= dec->sample_fmt;
1600 if (is->reformat_ctx) {
1601 const void *ibuf[6]= {is->audio_buf1};
1602 void *obuf[6]= {is->audio_buf2};
1603 int istride[6]= {av_get_bits_per_sample_format(dec->sample_fmt)/8};
1604 int ostride[6]= {2};
1605 int len= data_size/istride[0];
1606 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
1607 printf("av_audio_convert() failed\n");
1610 is->audio_buf= is->audio_buf2;
1611 /* FIXME: existing code assume that data_size equals framesize*channels*2
1612 remove this legacy cruft */
1615 is->audio_buf= is->audio_buf1;
1618 /* if no pts, then compute it */
1619 pts = is->audio_clock;
1621 n = 2 * dec->channels;
1622 is->audio_clock += (double)data_size /
1623 (double)(n * dec->sample_rate);
1624 #if defined(DEBUG_SYNC)
1626 static double last_clock;
1627 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1628 is->audio_clock - last_clock,
1629 is->audio_clock, pts);
1630 last_clock = is->audio_clock;
1636 /* free the current packet */
1638 av_free_packet(pkt);
1640 if (is->paused || is->audioq.abort_request) {
1644 /* read next packet */
1645 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1647 if(pkt->data == flush_pkt.data){
1648 avcodec_flush_buffers(dec);
1652 pkt_temp->data = pkt->data;
1653 pkt_temp->size = pkt->size;
1655 /* if update the audio clock with the pts */
1656 if (pkt->pts != AV_NOPTS_VALUE) {
1657 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1662 /* get the current audio output buffer size, in samples. With SDL, we
1663 cannot have a precise information */
1664 static int audio_write_get_buf_size(VideoState *is)
1666 return is->audio_buf_size - is->audio_buf_index;
1670 /* prepare a new audio buffer */
1671 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1673 VideoState *is = opaque;
1674 int audio_size, len1;
1677 audio_callback_time = av_gettime();
1680 if (is->audio_buf_index >= is->audio_buf_size) {
1681 audio_size = audio_decode_frame(is, &pts);
1682 if (audio_size < 0) {
1683 /* if error, just output silence */
1684 is->audio_buf = is->audio_buf1;
1685 is->audio_buf_size = 1024;
1686 memset(is->audio_buf, 0, is->audio_buf_size);
1689 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1690 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1692 is->audio_buf_size = audio_size;
1694 is->audio_buf_index = 0;
1696 len1 = is->audio_buf_size - is->audio_buf_index;
1699 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1702 is->audio_buf_index += len1;
1706 /* open a given stream. Return 0 if OK */
1707 static int stream_component_open(VideoState *is, int stream_index)
1709 AVFormatContext *ic = is->ic;
1710 AVCodecContext *enc;
1712 SDL_AudioSpec wanted_spec, spec;
1714 if (stream_index < 0 || stream_index >= ic->nb_streams)
1716 enc = ic->streams[stream_index]->codec;
1718 /* prepare audio output */
1719 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1720 if (enc->channels > 0) {
1721 enc->request_channels = FFMIN(2, enc->channels);
1723 enc->request_channels = 2;
1727 codec = avcodec_find_decoder(enc->codec_id);
1728 enc->debug_mv = debug_mv;
1730 enc->workaround_bugs = workaround_bugs;
1731 enc->lowres = lowres;
1732 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1733 enc->idct_algo= idct;
1734 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1735 enc->skip_frame= skip_frame;
1736 enc->skip_idct= skip_idct;
1737 enc->skip_loop_filter= skip_loop_filter;
1738 enc->error_recognition= error_recognition;
1739 enc->error_concealment= error_concealment;
1741 set_context_opts(enc, avcodec_opts[enc->codec_type], 0);
1744 avcodec_open(enc, codec) < 0)
1747 /* prepare audio output */
1748 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1749 wanted_spec.freq = enc->sample_rate;
1750 wanted_spec.format = AUDIO_S16SYS;
1751 wanted_spec.channels = enc->channels;
1752 wanted_spec.silence = 0;
1753 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1754 wanted_spec.callback = sdl_audio_callback;
1755 wanted_spec.userdata = is;
1756 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1757 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1760 is->audio_hw_buf_size = spec.size;
1761 is->audio_src_fmt= SAMPLE_FMT_S16;
1765 avcodec_thread_init(enc, thread_count);
1766 enc->thread_count= thread_count;
1767 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
1768 switch(enc->codec_type) {
1769 case CODEC_TYPE_AUDIO:
1770 is->audio_stream = stream_index;
1771 is->audio_st = ic->streams[stream_index];
1772 is->audio_buf_size = 0;
1773 is->audio_buf_index = 0;
1775 /* init averaging filter */
1776 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1777 is->audio_diff_avg_count = 0;
1778 /* since we do not have a precise anough audio fifo fullness,
1779 we correct audio sync only if larger than this threshold */
1780 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1782 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1783 packet_queue_init(&is->audioq);
1786 case CODEC_TYPE_VIDEO:
1787 is->video_stream = stream_index;
1788 is->video_st = ic->streams[stream_index];
1790 is->frame_last_delay = 40e-3;
1791 is->frame_timer = (double)av_gettime() / 1000000.0;
1792 is->video_current_pts_time = av_gettime();
1794 packet_queue_init(&is->videoq);
1795 is->video_tid = SDL_CreateThread(video_thread, is);
1797 case CODEC_TYPE_SUBTITLE:
1798 is->subtitle_stream = stream_index;
1799 is->subtitle_st = ic->streams[stream_index];
1800 packet_queue_init(&is->subtitleq);
1802 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
1810 static void stream_component_close(VideoState *is, int stream_index)
1812 AVFormatContext *ic = is->ic;
1813 AVCodecContext *enc;
1815 if (stream_index < 0 || stream_index >= ic->nb_streams)
1817 enc = ic->streams[stream_index]->codec;
1819 switch(enc->codec_type) {
1820 case CODEC_TYPE_AUDIO:
1821 packet_queue_abort(&is->audioq);
1825 packet_queue_end(&is->audioq);
1826 if (is->reformat_ctx)
1827 av_audio_convert_free(is->reformat_ctx);
1829 case CODEC_TYPE_VIDEO:
1830 packet_queue_abort(&is->videoq);
1832 /* note: we also signal this mutex to make sure we deblock the
1833 video thread in all cases */
1834 SDL_LockMutex(is->pictq_mutex);
1835 SDL_CondSignal(is->pictq_cond);
1836 SDL_UnlockMutex(is->pictq_mutex);
1838 SDL_WaitThread(is->video_tid, NULL);
1840 packet_queue_end(&is->videoq);
1842 case CODEC_TYPE_SUBTITLE:
1843 packet_queue_abort(&is->subtitleq);
1845 /* note: we also signal this mutex to make sure we deblock the
1846 video thread in all cases */
1847 SDL_LockMutex(is->subpq_mutex);
1848 is->subtitle_stream_changed = 1;
1850 SDL_CondSignal(is->subpq_cond);
1851 SDL_UnlockMutex(is->subpq_mutex);
1853 SDL_WaitThread(is->subtitle_tid, NULL);
1855 packet_queue_end(&is->subtitleq);
1861 ic->streams[stream_index]->discard = AVDISCARD_ALL;
1863 switch(enc->codec_type) {
1864 case CODEC_TYPE_AUDIO:
1865 is->audio_st = NULL;
1866 is->audio_stream = -1;
1868 case CODEC_TYPE_VIDEO:
1869 is->video_st = NULL;
1870 is->video_stream = -1;
1872 case CODEC_TYPE_SUBTITLE:
1873 is->subtitle_st = NULL;
1874 is->subtitle_stream = -1;
1881 static void dump_stream_info(const AVFormatContext *s)
1883 AVMetadataTag *tag = NULL;
1884 while ((tag=av_metadata_get(s->metadata,"",tag,AV_METADATA_IGNORE_SUFFIX)))
1885 fprintf(stderr, "%s: %s\n", tag->key, tag->value);
1888 /* since we have only one decoding thread, we can use a global
1889 variable instead of a thread local variable */
1890 static VideoState *global_video_state;
1892 static int decode_interrupt_cb(void)
1894 return (global_video_state && global_video_state->abort_request);
1897 /* this thread gets the stream from the disk or the network */
1898 static int decode_thread(void *arg)
1900 VideoState *is = arg;
1901 AVFormatContext *ic;
1902 int err, i, ret, video_index, audio_index, subtitle_index;
1903 AVPacket pkt1, *pkt = &pkt1;
1904 AVFormatParameters params, *ap = ¶ms;
1909 subtitle_index = -1;
1910 is->video_stream = -1;
1911 is->audio_stream = -1;
1912 is->subtitle_stream = -1;
1914 global_video_state = is;
1915 url_set_interrupt_cb(decode_interrupt_cb);
1917 memset(ap, 0, sizeof(*ap));
1919 ap->width = frame_width;
1920 ap->height= frame_height;
1921 ap->time_base= (AVRational){1, 25};
1922 ap->pix_fmt = frame_pix_fmt;
1924 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1926 print_error(is->filename, err);
1933 ic->flags |= AVFMT_FLAG_GENPTS;
1935 err = av_find_stream_info(ic);
1937 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1942 ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
1944 /* if seeking requested, we execute it */
1945 if (start_time != AV_NOPTS_VALUE) {
1948 timestamp = start_time;
1949 /* add the stream start time */
1950 if (ic->start_time != AV_NOPTS_VALUE)
1951 timestamp += ic->start_time;
1952 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
1954 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1955 is->filename, (double)timestamp / AV_TIME_BASE);
1959 for(i = 0; i < ic->nb_streams; i++) {
1960 AVCodecContext *enc = ic->streams[i]->codec;
1961 ic->streams[i]->discard = AVDISCARD_ALL;
1962 switch(enc->codec_type) {
1963 case CODEC_TYPE_AUDIO:
1964 if (wanted_audio_stream-- >= 0 && !audio_disable)
1967 case CODEC_TYPE_VIDEO:
1968 if (wanted_video_stream-- >= 0 && !video_disable)
1971 case CODEC_TYPE_SUBTITLE:
1972 if (wanted_subtitle_stream-- >= 0 && !video_disable)
1980 dump_format(ic, 0, is->filename, 0);
1981 dump_stream_info(ic);
1984 /* open the streams */
1985 if (audio_index >= 0) {
1986 stream_component_open(is, audio_index);
1989 if (video_index >= 0) {
1990 stream_component_open(is, video_index);
1992 if (!display_disable)
1996 if (subtitle_index >= 0) {
1997 stream_component_open(is, subtitle_index);
2000 if (is->video_stream < 0 && is->audio_stream < 0) {
2001 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2007 if (is->abort_request)
2009 if (is->paused != is->last_paused) {
2010 is->last_paused = is->paused;
2016 #if CONFIG_RTSP_DEMUXER
2017 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2018 /* wait 10 ms to avoid trying to get another packet */
2025 int64_t seek_target= is->seek_pos;
2026 int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2027 int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2028 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2029 // of the seek_pos/seek_rel variables
2031 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2033 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2035 if (is->audio_stream >= 0) {
2036 packet_queue_flush(&is->audioq);
2037 packet_queue_put(&is->audioq, &flush_pkt);
2039 if (is->subtitle_stream >= 0) {
2040 packet_queue_flush(&is->subtitleq);
2041 packet_queue_put(&is->subtitleq, &flush_pkt);
2043 if (is->video_stream >= 0) {
2044 packet_queue_flush(&is->videoq);
2045 packet_queue_put(&is->videoq, &flush_pkt);
2052 /* if the queue are full, no need to read more */
2053 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
2054 is->videoq.size > MAX_VIDEOQ_SIZE ||
2055 is->subtitleq.size > MAX_SUBTITLEQ_SIZE) {
2060 if(url_feof(ic->pb) || eof) {
2061 if(is->video_stream >= 0){
2062 av_init_packet(pkt);
2065 pkt->stream_index= is->video_stream;
2066 packet_queue_put(&is->videoq, pkt);
2071 ret = av_read_frame(ic, pkt);
2073 if (ret == AVERROR_EOF)
2075 if (url_ferror(ic->pb))
2077 SDL_Delay(100); /* wait for user event */
2080 if (pkt->stream_index == is->audio_stream) {
2081 packet_queue_put(&is->audioq, pkt);
2082 } else if (pkt->stream_index == is->video_stream) {
2083 packet_queue_put(&is->videoq, pkt);
2084 } else if (pkt->stream_index == is->subtitle_stream) {
2085 packet_queue_put(&is->subtitleq, pkt);
2087 av_free_packet(pkt);
2090 /* wait until the end */
2091 while (!is->abort_request) {
2097 /* disable interrupting */
2098 global_video_state = NULL;
2100 /* close each stream */
2101 if (is->audio_stream >= 0)
2102 stream_component_close(is, is->audio_stream);
2103 if (is->video_stream >= 0)
2104 stream_component_close(is, is->video_stream);
2105 if (is->subtitle_stream >= 0)
2106 stream_component_close(is, is->subtitle_stream);
2108 av_close_input_file(is->ic);
2109 is->ic = NULL; /* safety */
2111 url_set_interrupt_cb(NULL);
2116 event.type = FF_QUIT_EVENT;
2117 event.user.data1 = is;
2118 SDL_PushEvent(&event);
2123 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2127 is = av_mallocz(sizeof(VideoState));
2130 av_strlcpy(is->filename, filename, sizeof(is->filename));
2131 is->iformat = iformat;
2135 /* start video display */
2136 is->pictq_mutex = SDL_CreateMutex();
2137 is->pictq_cond = SDL_CreateCond();
2139 is->subpq_mutex = SDL_CreateMutex();
2140 is->subpq_cond = SDL_CreateCond();
2142 /* add the refresh timer to draw the picture */
2143 schedule_refresh(is, 40);
2145 is->av_sync_type = av_sync_type;
2146 is->parse_tid = SDL_CreateThread(decode_thread, is);
2147 if (!is->parse_tid) {
2154 static void stream_close(VideoState *is)
2158 /* XXX: use a special url_shutdown call to abort parse cleanly */
2159 is->abort_request = 1;
2160 SDL_WaitThread(is->parse_tid, NULL);
2162 /* free all pictures */
2163 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2166 SDL_FreeYUVOverlay(vp->bmp);
2170 SDL_DestroyMutex(is->pictq_mutex);
2171 SDL_DestroyCond(is->pictq_cond);
2172 SDL_DestroyMutex(is->subpq_mutex);
2173 SDL_DestroyCond(is->subpq_cond);
2174 if (is->img_convert_ctx)
2175 sws_freeContext(is->img_convert_ctx);
2179 static void stream_cycle_channel(VideoState *is, int codec_type)
2181 AVFormatContext *ic = is->ic;
2182 int start_index, stream_index;
2185 if (codec_type == CODEC_TYPE_VIDEO)
2186 start_index = is->video_stream;
2187 else if (codec_type == CODEC_TYPE_AUDIO)
2188 start_index = is->audio_stream;
2190 start_index = is->subtitle_stream;
2191 if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
2193 stream_index = start_index;
2195 if (++stream_index >= is->ic->nb_streams)
2197 if (codec_type == CODEC_TYPE_SUBTITLE)
2204 if (stream_index == start_index)
2206 st = ic->streams[stream_index];
2207 if (st->codec->codec_type == codec_type) {
2208 /* check that parameters are OK */
2209 switch(codec_type) {
2210 case CODEC_TYPE_AUDIO:
2211 if (st->codec->sample_rate != 0 &&
2212 st->codec->channels != 0)
2215 case CODEC_TYPE_VIDEO:
2216 case CODEC_TYPE_SUBTITLE:
2224 stream_component_close(is, start_index);
2225 stream_component_open(is, stream_index);
2229 static void toggle_full_screen(void)
2231 is_full_screen = !is_full_screen;
2232 if (!fs_screen_width) {
2233 /* use default SDL method */
2234 // SDL_WM_ToggleFullScreen(screen);
2236 video_open(cur_stream);
2239 static void toggle_pause(void)
2242 stream_pause(cur_stream);
2246 static void step_to_next_frame(void)
2249 /* if the stream is paused unpause it, then step */
2250 if (cur_stream->paused)
2251 stream_pause(cur_stream);
2256 static void do_exit(void)
2260 stream_close(cur_stream);
2263 for (i = 0; i < CODEC_TYPE_NB; i++)
2264 av_free(avcodec_opts[i]);
2265 av_free(avformat_opts);
2273 static void toggle_audio_display(void)
2276 cur_stream->show_audio = !cur_stream->show_audio;
2280 /* handle an event sent by the GUI */
2281 static void event_loop(void)
2284 double incr, pos, frac;
2287 SDL_WaitEvent(&event);
2288 switch(event.type) {
2290 switch(event.key.keysym.sym) {
2296 toggle_full_screen();
2302 case SDLK_s: //S: Step to next frame
2303 step_to_next_frame();
2307 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
2311 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
2315 stream_cycle_channel(cur_stream, CODEC_TYPE_SUBTITLE);
2318 toggle_audio_display();
2333 if (seek_by_bytes) {
2334 pos = url_ftell(cur_stream->ic->pb);
2335 if (cur_stream->ic->bit_rate)
2336 incr *= cur_stream->ic->bit_rate / 60.0;
2340 stream_seek(cur_stream, pos, incr);
2342 pos = get_master_clock(cur_stream);
2344 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE));
2352 case SDL_MOUSEBUTTONDOWN:
2356 int tns, thh, tmm, tss;
2357 tns = cur_stream->ic->duration/1000000LL;
2359 tmm = (tns%3600)/60;
2361 frac = (double)event.button.x/(double)cur_stream->width;
2366 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2367 hh, mm, ss, thh, tmm, tss);
2368 ts = frac*cur_stream->ic->duration;
2369 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2370 ts += cur_stream->ic->start_time;
2371 stream_seek(cur_stream, ts, 0);
2374 case SDL_VIDEORESIZE:
2376 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2377 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2378 screen_width = cur_stream->width = event.resize.w;
2379 screen_height= cur_stream->height= event.resize.h;
2386 case FF_ALLOC_EVENT:
2387 video_open(event.user.data1);
2388 alloc_picture(event.user.data1);
2390 case FF_REFRESH_EVENT:
2391 video_refresh_timer(event.user.data1);
2399 static void opt_frame_size(const char *arg)
2401 if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2402 fprintf(stderr, "Incorrect frame size\n");
2405 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2406 fprintf(stderr, "Frame size must be a multiple of 2\n");
2411 static int opt_width(const char *opt, const char *arg)
2413 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2417 static int opt_height(const char *opt, const char *arg)
2419 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2423 static void opt_format(const char *arg)
2425 file_iformat = av_find_input_format(arg);
2426 if (!file_iformat) {
2427 fprintf(stderr, "Unknown input format: %s\n", arg);
2432 static void opt_frame_pix_fmt(const char *arg)
2434 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2437 static int opt_sync(const char *opt, const char *arg)
2439 if (!strcmp(arg, "audio"))
2440 av_sync_type = AV_SYNC_AUDIO_MASTER;
2441 else if (!strcmp(arg, "video"))
2442 av_sync_type = AV_SYNC_VIDEO_MASTER;
2443 else if (!strcmp(arg, "ext"))
2444 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2446 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2452 static int opt_seek(const char *opt, const char *arg)
2454 start_time = parse_time_or_die(opt, arg, 1);
2458 static int opt_debug(const char *opt, const char *arg)
2460 av_log_set_level(99);
2461 debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2465 static int opt_vismv(const char *opt, const char *arg)
2467 debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2471 static int opt_thread_count(const char *opt, const char *arg)
2473 thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2475 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2480 static const OptionDef options[] = {
2481 { "h", OPT_EXIT, {(void*)show_help}, "show help" },
2482 { "version", OPT_EXIT, {(void*)show_version}, "show version" },
2483 { "L", OPT_EXIT, {(void*)show_license}, "show license" },
2484 { "formats", OPT_EXIT, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },
2485 { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
2486 { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
2487 { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2488 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2489 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2490 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2491 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "select desired audio stream", "stream_number" },
2492 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_video_stream}, "select desired video stream", "stream_number" },
2493 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_subtitle_stream}, "select desired subtitle stream", "stream_number" },
2494 { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2495 { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
2496 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2497 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2498 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2499 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2500 { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
2501 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2502 { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2503 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2504 { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2505 { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
2506 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2507 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2508 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2509 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2510 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
2511 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)", "threshold" },
2512 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
2513 { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2514 { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2515 { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
2519 static void show_help(void)
2521 printf("usage: ffplay [options] input_file\n"
2522 "Simple media player\n");
2524 show_help_options(options, "Main options:\n",
2526 show_help_options(options, "\nAdvanced options:\n",
2527 OPT_EXPERT, OPT_EXPERT);
2528 printf("\nWhile playing:\n"
2530 "f toggle full screen\n"
2532 "a cycle audio channel\n"
2533 "v cycle video channel\n"
2534 "t cycle subtitle channel\n"
2535 "w show audio waves\n"
2536 "left/right seek backward/forward 10 seconds\n"
2537 "down/up seek backward/forward 1 minute\n"
2538 "mouse click seek to percentage in file corresponding to fraction of width\n"
2542 static void opt_input_file(const char *filename)
2544 if (!strcmp(filename, "-"))
2546 input_filename = filename;
2549 /* Called from the main */
2550 int main(int argc, char **argv)
2554 /* register all codecs, demux and protocols */
2555 avcodec_register_all();
2556 avdevice_register_all();
2559 for(i=0; i<CODEC_TYPE_NB; i++){
2560 avcodec_opts[i]= avcodec_alloc_context2(i);
2562 avformat_opts = avformat_alloc_context();
2563 sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
2567 parse_options(argc, argv, options, opt_input_file);
2569 if (!input_filename) {
2570 fprintf(stderr, "An input file must be specified\n");
2574 if (display_disable) {
2577 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2578 #if !defined(__MINGW32__) && !defined(__APPLE__)
2579 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2581 if (SDL_Init (flags)) {
2582 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2586 if (!display_disable) {
2587 #if HAVE_SDL_VIDEO_SIZE
2588 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2589 fs_screen_width = vi->current_w;
2590 fs_screen_height = vi->current_h;
2594 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2595 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
2596 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2597 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2599 av_init_packet(&flush_pkt);
2600 flush_pkt.data= "FLUSH";
2602 cur_stream = stream_open(input_filename, file_iformat);