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 "libavdevice/avdevice.h"
27 #include "libswscale/swscale.h"
28 #include "libavcodec/audioconvert.h"
29 #include "libavcodec/colorspace.h"
30 #include "libavcodec/opt.h"
35 #include <SDL_thread.h>
38 #undef main /* We don't want SDL to override our main() */
43 const char program_name[] = "FFplay";
44 const int program_birth_year = 2003;
48 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
49 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
50 #define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
52 /* SDL audio buffer size, in samples. Should be small to have precise
53 A/V sync as SDL does not have hardware buffer fullness info. */
54 #define SDL_AUDIO_BUFFER_SIZE 1024
56 /* no AV sync correction is done if below the AV sync threshold */
57 #define AV_SYNC_THRESHOLD 0.01
58 /* no AV correction is done if too big error */
59 #define AV_NOSYNC_THRESHOLD 10.0
61 /* maximum audio speed change to get correct sync */
62 #define SAMPLE_CORRECTION_PERCENT_MAX 10
64 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
65 #define AUDIO_DIFF_AVG_NB 20
67 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
68 #define SAMPLE_ARRAY_SIZE (2*65536)
70 static int sws_flags = SWS_BICUBIC;
72 typedef struct PacketQueue {
73 AVPacketList *first_pkt, *last_pkt;
81 #define VIDEO_PICTURE_QUEUE_SIZE 1
82 #define SUBPICTURE_QUEUE_SIZE 4
84 typedef struct VideoPicture {
85 double pts; ///<presentation time stamp for this picture
87 int width, height; /* source height & width */
91 typedef struct SubPicture {
92 double pts; /* presentation time stamp for this picture */
97 AV_SYNC_AUDIO_MASTER, /* default choice */
99 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
102 typedef struct VideoState {
103 SDL_Thread *parse_tid;
104 SDL_Thread *video_tid;
105 AVInputFormat *iformat;
115 int dtg_active_format;
120 double external_clock; /* external clock base */
121 int64_t external_clock_time;
124 double audio_diff_cum; /* used for AV difference average computation */
125 double audio_diff_avg_coef;
126 double audio_diff_threshold;
127 int audio_diff_avg_count;
130 int audio_hw_buf_size;
131 /* samples output by the codec. we reserve more space for avsync
133 DECLARE_ALIGNED(16,uint8_t,audio_buf1[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
134 DECLARE_ALIGNED(16,uint8_t,audio_buf2[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
136 unsigned int audio_buf_size; /* in bytes */
137 int audio_buf_index; /* in bytes */
138 AVPacket audio_pkt_temp;
140 enum SampleFormat audio_src_fmt;
141 AVAudioConvert *reformat_ctx;
143 int show_audio; /* if true, display audio samples */
144 int16_t sample_array[SAMPLE_ARRAY_SIZE];
145 int sample_array_index;
148 SDL_Thread *subtitle_tid;
150 int subtitle_stream_changed;
151 AVStream *subtitle_st;
152 PacketQueue subtitleq;
153 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
154 int subpq_size, subpq_rindex, subpq_windex;
155 SDL_mutex *subpq_mutex;
156 SDL_cond *subpq_cond;
159 double frame_last_pts;
160 double frame_last_delay;
161 double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
165 double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
166 int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
167 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
168 int pictq_size, pictq_rindex, pictq_windex;
169 SDL_mutex *pictq_mutex;
170 SDL_cond *pictq_cond;
171 struct SwsContext *img_convert_ctx;
173 // QETimer *video_timer;
175 int width, height, xleft, ytop;
178 static void show_help(void);
179 static int audio_write_get_buf_size(VideoState *is);
181 /* options specified by the user */
182 static AVInputFormat *file_iformat;
183 static const char *input_filename;
184 static int fs_screen_width;
185 static int fs_screen_height;
186 static int screen_width = 0;
187 static int screen_height = 0;
188 static int frame_width = 0;
189 static int frame_height = 0;
190 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
191 static int audio_disable;
192 static int video_disable;
193 static int wanted_audio_stream= 0;
194 static int wanted_video_stream= 0;
195 static int wanted_subtitle_stream= -1;
196 static int seek_by_bytes;
197 static int display_disable;
198 static int show_status;
199 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
200 static int64_t start_time = AV_NOPTS_VALUE;
201 static int debug = 0;
202 static int debug_mv = 0;
204 static int thread_count = 1;
205 static int workaround_bugs = 1;
207 static int genpts = 0;
208 static int lowres = 0;
209 static int idct = FF_IDCT_AUTO;
210 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
211 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
212 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
213 static int error_recognition = FF_ER_CAREFUL;
214 static int error_concealment = 3;
215 static int decoder_reorder_pts= 0;
217 /* current context */
218 static int is_full_screen;
219 static VideoState *cur_stream;
220 static int64_t audio_callback_time;
222 static AVPacket flush_pkt;
224 #define FF_ALLOC_EVENT (SDL_USEREVENT)
225 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
226 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
228 static SDL_Surface *screen;
230 /* packet queue handling */
231 static void packet_queue_init(PacketQueue *q)
233 memset(q, 0, sizeof(PacketQueue));
234 q->mutex = SDL_CreateMutex();
235 q->cond = SDL_CreateCond();
238 static void packet_queue_flush(PacketQueue *q)
240 AVPacketList *pkt, *pkt1;
242 SDL_LockMutex(q->mutex);
243 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
245 av_free_packet(&pkt->pkt);
252 SDL_UnlockMutex(q->mutex);
255 static void packet_queue_end(PacketQueue *q)
257 packet_queue_flush(q);
258 SDL_DestroyMutex(q->mutex);
259 SDL_DestroyCond(q->cond);
262 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
266 /* duplicate the packet */
267 if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
270 pkt1 = av_malloc(sizeof(AVPacketList));
277 SDL_LockMutex(q->mutex);
283 q->last_pkt->next = pkt1;
286 q->size += pkt1->pkt.size + sizeof(*pkt1);
287 /* XXX: should duplicate packet data in DV case */
288 SDL_CondSignal(q->cond);
290 SDL_UnlockMutex(q->mutex);
294 static void packet_queue_abort(PacketQueue *q)
296 SDL_LockMutex(q->mutex);
298 q->abort_request = 1;
300 SDL_CondSignal(q->cond);
302 SDL_UnlockMutex(q->mutex);
305 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
306 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
311 SDL_LockMutex(q->mutex);
314 if (q->abort_request) {
321 q->first_pkt = pkt1->next;
325 q->size -= pkt1->pkt.size + sizeof(*pkt1);
334 SDL_CondWait(q->cond, q->mutex);
337 SDL_UnlockMutex(q->mutex);
341 static inline void fill_rectangle(SDL_Surface *screen,
342 int x, int y, int w, int h, int color)
349 SDL_FillRect(screen, &rect, color);
353 /* draw only the border of a rectangle */
354 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
358 /* fill the background */
362 w2 = s->width - (x + w);
368 h2 = s->height - (y + h);
371 fill_rectangle(screen,
375 fill_rectangle(screen,
376 s->xleft + s->width - w2, s->ytop,
379 fill_rectangle(screen,
380 s->xleft + w1, s->ytop,
381 s->width - w1 - w2, h1,
383 fill_rectangle(screen,
384 s->xleft + w1, s->ytop + s->height - h2,
385 s->width - w1 - w2, h2,
390 #define ALPHA_BLEND(a, oldp, newp, s)\
391 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
393 #define RGBA_IN(r, g, b, a, s)\
395 unsigned int v = ((const uint32_t *)(s))[0];\
396 a = (v >> 24) & 0xff;\
397 r = (v >> 16) & 0xff;\
398 g = (v >> 8) & 0xff;\
402 #define YUVA_IN(y, u, v, a, s, pal)\
404 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
405 a = (val >> 24) & 0xff;\
406 y = (val >> 16) & 0xff;\
407 u = (val >> 8) & 0xff;\
411 #define YUVA_OUT(d, y, u, v, a)\
413 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
419 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
421 int wrap, wrap3, width2, skip2;
422 int y, u, v, a, u1, v1, a1, w, h;
423 uint8_t *lum, *cb, *cr;
426 int dstx, dsty, dstw, dsth;
428 dstw = av_clip(rect->w, 0, imgw);
429 dsth = av_clip(rect->h, 0, imgh);
430 dstx = av_clip(rect->x, 0, imgw - dstw);
431 dsty = av_clip(rect->y, 0, imgh - dsth);
432 lum = dst->data[0] + dsty * dst->linesize[0];
433 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
434 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
436 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
438 wrap = dst->linesize[0];
439 wrap3 = rect->pict.linesize[0];
440 p = rect->pict.data[0];
441 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
449 YUVA_IN(y, u, v, a, p, pal);
450 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
451 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
452 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
458 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
459 YUVA_IN(y, u, v, a, p, pal);
463 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
465 YUVA_IN(y, u, v, a, p + BPP, pal);
469 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
470 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
471 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
478 YUVA_IN(y, u, v, a, p, pal);
479 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
480 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
481 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
485 p += wrap3 - dstw * BPP;
486 lum += wrap - dstw - dstx;
487 cb += dst->linesize[1] - width2 - skip2;
488 cr += dst->linesize[2] - width2 - skip2;
490 for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
496 YUVA_IN(y, u, v, a, p, pal);
500 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
503 YUVA_IN(y, u, v, a, p, pal);
507 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
508 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
509 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
515 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
516 YUVA_IN(y, u, v, a, p, pal);
520 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
522 YUVA_IN(y, u, v, a, p + BPP, pal);
526 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
530 YUVA_IN(y, u, v, a, p, pal);
534 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
536 YUVA_IN(y, u, v, a, p + BPP, pal);
540 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
542 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
543 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
547 p += -wrap3 + 2 * BPP;
551 YUVA_IN(y, u, v, a, p, pal);
555 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
558 YUVA_IN(y, u, v, a, p, pal);
562 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
563 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
564 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
570 p += wrap3 + (wrap3 - dstw * BPP);
571 lum += wrap + (wrap - dstw - dstx);
572 cb += dst->linesize[1] - width2 - skip2;
573 cr += dst->linesize[2] - width2 - skip2;
575 /* handle odd height */
582 YUVA_IN(y, u, v, a, p, pal);
583 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
584 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
585 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
591 for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
592 YUVA_IN(y, u, v, a, p, pal);
596 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
598 YUVA_IN(y, u, v, a, p + BPP, pal);
602 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
603 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
604 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
611 YUVA_IN(y, u, v, a, p, pal);
612 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
613 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
614 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
619 static void free_subpicture(SubPicture *sp)
623 for (i = 0; i < sp->sub.num_rects; i++)
625 av_freep(&sp->sub.rects[i]->pict.data[0]);
626 av_freep(&sp->sub.rects[i]->pict.data[1]);
627 av_freep(&sp->sub.rects[i]);
630 av_free(sp->sub.rects);
632 memset(&sp->sub, 0, sizeof(AVSubtitle));
635 static void video_image_display(VideoState *is)
641 int width, height, x, y;
645 vp = &is->pictq[is->pictq_rindex];
647 /* XXX: use variable in the frame */
648 if (is->video_st->sample_aspect_ratio.num)
649 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
650 else if (is->video_st->codec->sample_aspect_ratio.num)
651 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
654 if (aspect_ratio <= 0.0)
656 aspect_ratio *= (float)is->video_st->codec->width / is->video_st->codec->height;
657 /* if an active format is indicated, then it overrides the
660 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
661 is->dtg_active_format = is->video_st->codec->dtg_active_format;
662 printf("dtg_active_format=%d\n", is->dtg_active_format);
666 switch(is->video_st->codec->dtg_active_format) {
667 case FF_DTG_AFD_SAME:
672 aspect_ratio = 4.0 / 3.0;
674 case FF_DTG_AFD_16_9:
675 aspect_ratio = 16.0 / 9.0;
677 case FF_DTG_AFD_14_9:
678 aspect_ratio = 14.0 / 9.0;
680 case FF_DTG_AFD_4_3_SP_14_9:
681 aspect_ratio = 14.0 / 9.0;
683 case FF_DTG_AFD_16_9_SP_14_9:
684 aspect_ratio = 14.0 / 9.0;
686 case FF_DTG_AFD_SP_4_3:
687 aspect_ratio = 4.0 / 3.0;
694 if (is->subpq_size > 0)
696 sp = &is->subpq[is->subpq_rindex];
698 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
700 SDL_LockYUVOverlay (vp->bmp);
702 pict.data[0] = vp->bmp->pixels[0];
703 pict.data[1] = vp->bmp->pixels[2];
704 pict.data[2] = vp->bmp->pixels[1];
706 pict.linesize[0] = vp->bmp->pitches[0];
707 pict.linesize[1] = vp->bmp->pitches[2];
708 pict.linesize[2] = vp->bmp->pitches[1];
710 for (i = 0; i < sp->sub.num_rects; i++)
711 blend_subrect(&pict, sp->sub.rects[i],
712 vp->bmp->w, vp->bmp->h);
714 SDL_UnlockYUVOverlay (vp->bmp);
720 /* XXX: we suppose the screen has a 1.0 pixel ratio */
722 width = ((int)rint(height * aspect_ratio)) & ~1;
723 if (width > is->width) {
725 height = ((int)rint(width / aspect_ratio)) & ~1;
727 x = (is->width - width) / 2;
728 y = (is->height - height) / 2;
729 if (!is->no_background) {
730 /* fill the background */
731 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
733 is->no_background = 0;
735 rect.x = is->xleft + x;
736 rect.y = is->ytop + y;
739 SDL_DisplayYUVOverlay(vp->bmp, &rect);
742 fill_rectangle(screen,
743 is->xleft, is->ytop, is->width, is->height,
744 QERGB(0x00, 0x00, 0x00));
749 static inline int compute_mod(int a, int b)
758 static void video_audio_display(VideoState *s)
760 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
761 int ch, channels, h, h2, bgcolor, fgcolor;
764 /* compute display index : center on currently output samples */
765 channels = s->audio_st->codec->channels;
766 nb_display_channels = channels;
769 delay = audio_write_get_buf_size(s);
772 /* to be more precise, we take into account the time spent since
773 the last buffer computation */
774 if (audio_callback_time) {
775 time_diff = av_gettime() - audio_callback_time;
776 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
779 delay -= s->width / 2;
780 if (delay < s->width)
783 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
786 for(i=0; i<1000; i+=channels){
787 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
788 int a= s->sample_array[idx];
789 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
790 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
791 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
793 if(h<score && (b^c)<0){
799 s->last_i_start = i_start;
801 i_start = s->last_i_start;
804 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
805 fill_rectangle(screen,
806 s->xleft, s->ytop, s->width, s->height,
809 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
811 /* total height for one channel */
812 h = s->height / nb_display_channels;
813 /* graph height / 2 */
815 for(ch = 0;ch < nb_display_channels; ch++) {
817 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
818 for(x = 0; x < s->width; x++) {
819 y = (s->sample_array[i] * h2) >> 15;
826 fill_rectangle(screen,
827 s->xleft + x, ys, 1, y,
830 if (i >= SAMPLE_ARRAY_SIZE)
831 i -= SAMPLE_ARRAY_SIZE;
835 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
837 for(ch = 1;ch < nb_display_channels; ch++) {
838 y = s->ytop + ch * h;
839 fill_rectangle(screen,
840 s->xleft, y, s->width, 1,
843 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
846 static int video_open(VideoState *is){
847 int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
850 if(is_full_screen) flags |= SDL_FULLSCREEN;
851 else flags |= SDL_RESIZABLE;
853 if (is_full_screen && fs_screen_width) {
855 h = fs_screen_height;
856 } else if(!is_full_screen && screen_width){
859 }else if (is->video_st && is->video_st->codec->width){
860 w = is->video_st->codec->width;
861 h = is->video_st->codec->height;
867 screen = SDL_SetVideoMode(w, h, 0, flags);
869 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
870 screen = SDL_SetVideoMode(w, h, 24, flags);
873 fprintf(stderr, "SDL: could not set video mode - exiting\n");
876 SDL_WM_SetCaption("FFplay", "FFplay");
878 is->width = screen->w;
879 is->height = screen->h;
884 /* display the current picture, if any */
885 static void video_display(VideoState *is)
888 video_open(cur_stream);
889 if (is->audio_st && is->show_audio)
890 video_audio_display(is);
891 else if (is->video_st)
892 video_image_display(is);
895 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
898 event.type = FF_REFRESH_EVENT;
899 event.user.data1 = opaque;
900 SDL_PushEvent(&event);
901 return 0; /* 0 means stop timer */
904 /* schedule a video refresh in 'delay' ms */
905 static void schedule_refresh(VideoState *is, int delay)
907 if(!delay) delay=1; //SDL seems to be buggy when the delay is 0
908 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
911 /* get the current audio clock value */
912 static double get_audio_clock(VideoState *is)
915 int hw_buf_size, bytes_per_sec;
916 pts = is->audio_clock;
917 hw_buf_size = audio_write_get_buf_size(is);
920 bytes_per_sec = is->audio_st->codec->sample_rate *
921 2 * is->audio_st->codec->channels;
924 pts -= (double)hw_buf_size / bytes_per_sec;
928 /* get the current video clock value */
929 static double get_video_clock(VideoState *is)
935 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
937 return is->video_current_pts + delta;
940 /* get the current external clock value */
941 static double get_external_clock(VideoState *is)
945 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
948 /* get the current master clock value */
949 static double get_master_clock(VideoState *is)
953 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
955 val = get_video_clock(is);
957 val = get_audio_clock(is);
958 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
960 val = get_audio_clock(is);
962 val = get_video_clock(is);
964 val = get_external_clock(is);
969 /* seek in the stream */
970 static void stream_seek(VideoState *is, int64_t pos, int64_t rel)
976 is->seek_flags |= AVSEEK_FLAG_BYTE;
981 /* pause or resume the video */
982 static void stream_pause(VideoState *is)
984 is->paused = !is->paused;
986 is->video_current_pts = get_video_clock(is);
987 is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
991 static double compute_frame_delay(double frame_current_pts, VideoState *is)
993 double actual_delay, delay, sync_threshold, ref_clock, diff;
995 /* compute nominal delay */
996 delay = frame_current_pts - is->frame_last_pts;
997 if (delay <= 0 || delay >= 10.0) {
998 /* if incorrect delay, use previous one */
999 delay = is->frame_last_delay;
1001 is->frame_last_delay = delay;
1003 is->frame_last_pts = frame_current_pts;
1005 /* update delay to follow master synchronisation source */
1006 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1007 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1008 /* if video is slave, we try to correct big delays by
1009 duplicating or deleting a frame */
1010 ref_clock = get_master_clock(is);
1011 diff = frame_current_pts - ref_clock;
1013 /* skip or repeat frame. We take into account the
1014 delay to compute the threshold. I still don't know
1015 if it is the best guess */
1016 sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1017 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1018 if (diff <= -sync_threshold)
1020 else if (diff >= sync_threshold)
1025 is->frame_timer += delay;
1026 /* compute the REAL delay (we need to do that to avoid
1028 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
1029 if (actual_delay < 0.010) {
1030 /* XXX: should skip picture */
1031 actual_delay = 0.010;
1034 #if defined(DEBUG_SYNC)
1035 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1036 delay, actual_delay, frame_current_pts, -diff);
1039 return actual_delay;
1042 /* called to display each frame */
1043 static void video_refresh_timer(void *opaque)
1045 VideoState *is = opaque;
1048 SubPicture *sp, *sp2;
1051 if (is->pictq_size == 0) {
1052 /* if no picture, need to wait */
1053 schedule_refresh(is, 1);
1055 /* dequeue the picture */
1056 vp = &is->pictq[is->pictq_rindex];
1058 /* update current video pts */
1059 is->video_current_pts = vp->pts;
1060 is->video_current_pts_time = av_gettime();
1062 /* launch timer for next picture */
1063 schedule_refresh(is, (int)(compute_frame_delay(vp->pts, is) * 1000 + 0.5));
1065 if(is->subtitle_st) {
1066 if (is->subtitle_stream_changed) {
1067 SDL_LockMutex(is->subpq_mutex);
1069 while (is->subpq_size) {
1070 free_subpicture(&is->subpq[is->subpq_rindex]);
1072 /* update queue size and signal for next picture */
1073 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1074 is->subpq_rindex = 0;
1078 is->subtitle_stream_changed = 0;
1080 SDL_CondSignal(is->subpq_cond);
1081 SDL_UnlockMutex(is->subpq_mutex);
1083 if (is->subpq_size > 0) {
1084 sp = &is->subpq[is->subpq_rindex];
1086 if (is->subpq_size > 1)
1087 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1091 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1092 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1094 free_subpicture(sp);
1096 /* update queue size and signal for next picture */
1097 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1098 is->subpq_rindex = 0;
1100 SDL_LockMutex(is->subpq_mutex);
1102 SDL_CondSignal(is->subpq_cond);
1103 SDL_UnlockMutex(is->subpq_mutex);
1109 /* display picture */
1112 /* update queue size and signal for next picture */
1113 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1114 is->pictq_rindex = 0;
1116 SDL_LockMutex(is->pictq_mutex);
1118 SDL_CondSignal(is->pictq_cond);
1119 SDL_UnlockMutex(is->pictq_mutex);
1121 } else if (is->audio_st) {
1122 /* draw the next audio frame */
1124 schedule_refresh(is, 40);
1126 /* if only audio stream, then display the audio bars (better
1127 than nothing, just to test the implementation */
1129 /* display picture */
1132 schedule_refresh(is, 100);
1135 static int64_t last_time;
1137 int aqsize, vqsize, sqsize;
1140 cur_time = av_gettime();
1141 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
1146 aqsize = is->audioq.size;
1148 vqsize = is->videoq.size;
1149 if (is->subtitle_st)
1150 sqsize = is->subtitleq.size;
1152 if (is->audio_st && is->video_st)
1153 av_diff = get_audio_clock(is) - get_video_clock(is);
1154 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB \r",
1155 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
1157 last_time = cur_time;
1162 /* allocate a picture (needs to do that in main thread to avoid
1163 potential locking problems */
1164 static void alloc_picture(void *opaque)
1166 VideoState *is = opaque;
1169 vp = &is->pictq[is->pictq_windex];
1172 SDL_FreeYUVOverlay(vp->bmp);
1175 /* XXX: use generic function */
1176 /* XXX: disable overlay if no hardware acceleration or if RGB format */
1177 switch(is->video_st->codec->pix_fmt) {
1178 case PIX_FMT_YUV420P:
1179 case PIX_FMT_YUV422P:
1180 case PIX_FMT_YUV444P:
1181 case PIX_FMT_YUYV422:
1182 case PIX_FMT_YUV410P:
1183 case PIX_FMT_YUV411P:
1191 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
1192 is->video_st->codec->height,
1195 vp->width = is->video_st->codec->width;
1196 vp->height = is->video_st->codec->height;
1198 SDL_LockMutex(is->pictq_mutex);
1200 SDL_CondSignal(is->pictq_cond);
1201 SDL_UnlockMutex(is->pictq_mutex);
1206 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1208 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
1213 /* wait until we have space to put a new picture */
1214 SDL_LockMutex(is->pictq_mutex);
1215 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1216 !is->videoq.abort_request) {
1217 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1219 SDL_UnlockMutex(is->pictq_mutex);
1221 if (is->videoq.abort_request)
1224 vp = &is->pictq[is->pictq_windex];
1226 /* alloc or resize hardware picture buffer */
1228 vp->width != is->video_st->codec->width ||
1229 vp->height != is->video_st->codec->height) {
1234 /* the allocation must be done in the main thread to avoid
1236 event.type = FF_ALLOC_EVENT;
1237 event.user.data1 = is;
1238 SDL_PushEvent(&event);
1240 /* wait until the picture is allocated */
1241 SDL_LockMutex(is->pictq_mutex);
1242 while (!vp->allocated && !is->videoq.abort_request) {
1243 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1245 SDL_UnlockMutex(is->pictq_mutex);
1247 if (is->videoq.abort_request)
1251 /* if the frame is not skipped, then display it */
1255 /* get a pointer on the bitmap */
1256 SDL_LockYUVOverlay (vp->bmp);
1258 dst_pix_fmt = PIX_FMT_YUV420P;
1259 memset(&pict,0,sizeof(AVPicture));
1260 pict.data[0] = vp->bmp->pixels[0];
1261 pict.data[1] = vp->bmp->pixels[2];
1262 pict.data[2] = vp->bmp->pixels[1];
1264 pict.linesize[0] = vp->bmp->pitches[0];
1265 pict.linesize[1] = vp->bmp->pitches[2];
1266 pict.linesize[2] = vp->bmp->pitches[1];
1267 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1268 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1269 is->video_st->codec->width, is->video_st->codec->height,
1270 is->video_st->codec->pix_fmt,
1271 is->video_st->codec->width, is->video_st->codec->height,
1272 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1273 if (is->img_convert_ctx == NULL) {
1274 fprintf(stderr, "Cannot initialize the conversion context\n");
1277 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1278 0, is->video_st->codec->height, pict.data, pict.linesize);
1279 /* update the bitmap content */
1280 SDL_UnlockYUVOverlay(vp->bmp);
1284 /* now we can update the picture count */
1285 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1286 is->pictq_windex = 0;
1287 SDL_LockMutex(is->pictq_mutex);
1289 SDL_UnlockMutex(is->pictq_mutex);
1295 * compute the exact PTS for the picture if it is omitted in the stream
1296 * @param pts1 the dts of the pkt / pts of the frame
1298 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
1300 double frame_delay, pts;
1305 /* update video clock with pts, if present */
1306 is->video_clock = pts;
1308 pts = is->video_clock;
1310 /* update video clock for next frame */
1311 frame_delay = av_q2d(is->video_st->codec->time_base);
1312 /* for MPEG2, the frame can be repeated, so we update the
1313 clock accordingly */
1314 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1315 is->video_clock += frame_delay;
1317 #if defined(DEBUG_SYNC) && 0
1320 if (src_frame->pict_type == FF_B_TYPE)
1322 else if (src_frame->pict_type == FF_I_TYPE)
1326 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1330 return queue_picture(is, src_frame, pts);
1333 static int video_thread(void *arg)
1335 VideoState *is = arg;
1336 AVPacket pkt1, *pkt = &pkt1;
1337 int len1, got_picture;
1338 AVFrame *frame= avcodec_alloc_frame();
1342 while (is->paused && !is->videoq.abort_request) {
1345 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1348 if(pkt->data == flush_pkt.data){
1349 avcodec_flush_buffers(is->video_st->codec);
1353 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1354 this packet, if any */
1355 is->video_st->codec->reordered_opaque= pkt->pts;
1356 len1 = avcodec_decode_video2(is->video_st->codec,
1357 frame, &got_picture,
1360 if( (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
1361 && frame->reordered_opaque != AV_NOPTS_VALUE)
1362 pts= frame->reordered_opaque;
1363 else if(pkt->dts != AV_NOPTS_VALUE)
1367 pts *= av_q2d(is->video_st->time_base);
1372 if (output_picture2(is, frame, pts) < 0)
1375 av_free_packet(pkt);
1378 stream_pause(cur_stream);
1385 static int subtitle_thread(void *arg)
1387 VideoState *is = arg;
1389 AVPacket pkt1, *pkt = &pkt1;
1390 int len1, got_subtitle;
1393 int r, g, b, y, u, v, a;
1396 while (is->paused && !is->subtitleq.abort_request) {
1399 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1402 if(pkt->data == flush_pkt.data){
1403 avcodec_flush_buffers(is->subtitle_st->codec);
1406 SDL_LockMutex(is->subpq_mutex);
1407 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1408 !is->subtitleq.abort_request) {
1409 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1411 SDL_UnlockMutex(is->subpq_mutex);
1413 if (is->subtitleq.abort_request)
1416 sp = &is->subpq[is->subpq_windex];
1418 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1419 this packet, if any */
1421 if (pkt->pts != AV_NOPTS_VALUE)
1422 pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1424 len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
1425 &sp->sub, &got_subtitle,
1429 if (got_subtitle && sp->sub.format == 0) {
1432 for (i = 0; i < sp->sub.num_rects; i++)
1434 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1436 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1437 y = RGB_TO_Y_CCIR(r, g, b);
1438 u = RGB_TO_U_CCIR(r, g, b, 0);
1439 v = RGB_TO_V_CCIR(r, g, b, 0);
1440 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1444 /* now we can update the picture count */
1445 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1446 is->subpq_windex = 0;
1447 SDL_LockMutex(is->subpq_mutex);
1449 SDL_UnlockMutex(is->subpq_mutex);
1451 av_free_packet(pkt);
1454 // stream_pause(cur_stream);
1460 /* copy samples for viewing in editor window */
1461 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1463 int size, len, channels;
1465 channels = is->audio_st->codec->channels;
1467 size = samples_size / sizeof(short);
1469 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1472 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1474 is->sample_array_index += len;
1475 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1476 is->sample_array_index = 0;
1481 /* return the new audio buffer size (samples can be added or deleted
1482 to get better sync if video or external master clock) */
1483 static int synchronize_audio(VideoState *is, short *samples,
1484 int samples_size1, double pts)
1486 int n, samples_size;
1489 n = 2 * is->audio_st->codec->channels;
1490 samples_size = samples_size1;
1492 /* if not master, then we try to remove or add samples to correct the clock */
1493 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1494 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1495 double diff, avg_diff;
1496 int wanted_size, min_size, max_size, nb_samples;
1498 ref_clock = get_master_clock(is);
1499 diff = get_audio_clock(is) - ref_clock;
1501 if (diff < AV_NOSYNC_THRESHOLD) {
1502 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1503 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1504 /* not enough measures to have a correct estimate */
1505 is->audio_diff_avg_count++;
1507 /* estimate the A-V difference */
1508 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1510 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1511 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1512 nb_samples = samples_size / n;
1514 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1515 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1516 if (wanted_size < min_size)
1517 wanted_size = min_size;
1518 else if (wanted_size > max_size)
1519 wanted_size = max_size;
1521 /* add or remove samples to correction the synchro */
1522 if (wanted_size < samples_size) {
1523 /* remove samples */
1524 samples_size = wanted_size;
1525 } else if (wanted_size > samples_size) {
1526 uint8_t *samples_end, *q;
1530 nb = (samples_size - wanted_size);
1531 samples_end = (uint8_t *)samples + samples_size - n;
1532 q = samples_end + n;
1534 memcpy(q, samples_end, n);
1538 samples_size = wanted_size;
1542 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1543 diff, avg_diff, samples_size - samples_size1,
1544 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1548 /* too big difference : may be initial PTS errors, so
1550 is->audio_diff_avg_count = 0;
1551 is->audio_diff_cum = 0;
1555 return samples_size;
1558 /* decode one audio frame and returns its uncompressed size */
1559 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1561 AVPacket *pkt_temp = &is->audio_pkt_temp;
1562 AVPacket *pkt = &is->audio_pkt;
1563 AVCodecContext *dec= is->audio_st->codec;
1564 int n, len1, data_size;
1568 /* NOTE: the audio packet can contain several frames */
1569 while (pkt_temp->size > 0) {
1570 data_size = sizeof(is->audio_buf1);
1571 len1 = avcodec_decode_audio3(dec,
1572 (int16_t *)is->audio_buf1, &data_size,
1575 /* if error, we skip the frame */
1580 pkt_temp->data += len1;
1581 pkt_temp->size -= len1;
1585 if (dec->sample_fmt != is->audio_src_fmt) {
1586 if (is->reformat_ctx)
1587 av_audio_convert_free(is->reformat_ctx);
1588 is->reformat_ctx= av_audio_convert_alloc(SAMPLE_FMT_S16, 1,
1589 dec->sample_fmt, 1, NULL, 0);
1590 if (!is->reformat_ctx) {
1591 fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
1592 avcodec_get_sample_fmt_name(dec->sample_fmt),
1593 avcodec_get_sample_fmt_name(SAMPLE_FMT_S16));
1596 is->audio_src_fmt= dec->sample_fmt;
1599 if (is->reformat_ctx) {
1600 const void *ibuf[6]= {is->audio_buf1};
1601 void *obuf[6]= {is->audio_buf2};
1602 int istride[6]= {av_get_bits_per_sample_format(dec->sample_fmt)/8};
1603 int ostride[6]= {2};
1604 int len= data_size/istride[0];
1605 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
1606 printf("av_audio_convert() failed\n");
1609 is->audio_buf= is->audio_buf2;
1610 /* FIXME: existing code assume that data_size equals framesize*channels*2
1611 remove this legacy cruft */
1614 is->audio_buf= is->audio_buf1;
1617 /* if no pts, then compute it */
1618 pts = is->audio_clock;
1620 n = 2 * dec->channels;
1621 is->audio_clock += (double)data_size /
1622 (double)(n * dec->sample_rate);
1623 #if defined(DEBUG_SYNC)
1625 static double last_clock;
1626 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1627 is->audio_clock - last_clock,
1628 is->audio_clock, pts);
1629 last_clock = is->audio_clock;
1635 /* free the current packet */
1637 av_free_packet(pkt);
1639 if (is->paused || is->audioq.abort_request) {
1643 /* read next packet */
1644 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1646 if(pkt->data == flush_pkt.data){
1647 avcodec_flush_buffers(dec);
1651 pkt_temp->data = pkt->data;
1652 pkt_temp->size = pkt->size;
1654 /* if update the audio clock with the pts */
1655 if (pkt->pts != AV_NOPTS_VALUE) {
1656 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1661 /* get the current audio output buffer size, in samples. With SDL, we
1662 cannot have a precise information */
1663 static int audio_write_get_buf_size(VideoState *is)
1665 return is->audio_buf_size - is->audio_buf_index;
1669 /* prepare a new audio buffer */
1670 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1672 VideoState *is = opaque;
1673 int audio_size, len1;
1676 audio_callback_time = av_gettime();
1679 if (is->audio_buf_index >= is->audio_buf_size) {
1680 audio_size = audio_decode_frame(is, &pts);
1681 if (audio_size < 0) {
1682 /* if error, just output silence */
1683 is->audio_buf = is->audio_buf1;
1684 is->audio_buf_size = 1024;
1685 memset(is->audio_buf, 0, is->audio_buf_size);
1688 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1689 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1691 is->audio_buf_size = audio_size;
1693 is->audio_buf_index = 0;
1695 len1 = is->audio_buf_size - is->audio_buf_index;
1698 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1701 is->audio_buf_index += len1;
1705 /* open a given stream. Return 0 if OK */
1706 static int stream_component_open(VideoState *is, int stream_index)
1708 AVFormatContext *ic = is->ic;
1709 AVCodecContext *enc;
1711 SDL_AudioSpec wanted_spec, spec;
1713 if (stream_index < 0 || stream_index >= ic->nb_streams)
1715 enc = ic->streams[stream_index]->codec;
1717 /* prepare audio output */
1718 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1719 if (enc->channels > 0) {
1720 enc->request_channels = FFMIN(2, enc->channels);
1722 enc->request_channels = 2;
1726 codec = avcodec_find_decoder(enc->codec_id);
1727 enc->debug_mv = debug_mv;
1729 enc->workaround_bugs = workaround_bugs;
1730 enc->lowres = lowres;
1731 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1732 enc->idct_algo= idct;
1733 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1734 enc->skip_frame= skip_frame;
1735 enc->skip_idct= skip_idct;
1736 enc->skip_loop_filter= skip_loop_filter;
1737 enc->error_recognition= error_recognition;
1738 enc->error_concealment= error_concealment;
1740 set_context_opts(enc, avcodec_opts[enc->codec_type], 0);
1743 avcodec_open(enc, codec) < 0)
1746 /* prepare audio output */
1747 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1748 wanted_spec.freq = enc->sample_rate;
1749 wanted_spec.format = AUDIO_S16SYS;
1750 wanted_spec.channels = enc->channels;
1751 wanted_spec.silence = 0;
1752 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1753 wanted_spec.callback = sdl_audio_callback;
1754 wanted_spec.userdata = is;
1755 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1756 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1759 is->audio_hw_buf_size = spec.size;
1760 is->audio_src_fmt= SAMPLE_FMT_S16;
1764 avcodec_thread_init(enc, thread_count);
1765 enc->thread_count= thread_count;
1766 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
1767 switch(enc->codec_type) {
1768 case CODEC_TYPE_AUDIO:
1769 is->audio_stream = stream_index;
1770 is->audio_st = ic->streams[stream_index];
1771 is->audio_buf_size = 0;
1772 is->audio_buf_index = 0;
1774 /* init averaging filter */
1775 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1776 is->audio_diff_avg_count = 0;
1777 /* since we do not have a precise anough audio fifo fullness,
1778 we correct audio sync only if larger than this threshold */
1779 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1781 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1782 packet_queue_init(&is->audioq);
1785 case CODEC_TYPE_VIDEO:
1786 is->video_stream = stream_index;
1787 is->video_st = ic->streams[stream_index];
1789 is->frame_last_delay = 40e-3;
1790 is->frame_timer = (double)av_gettime() / 1000000.0;
1791 is->video_current_pts_time = av_gettime();
1793 packet_queue_init(&is->videoq);
1794 is->video_tid = SDL_CreateThread(video_thread, is);
1796 case CODEC_TYPE_SUBTITLE:
1797 is->subtitle_stream = stream_index;
1798 is->subtitle_st = ic->streams[stream_index];
1799 packet_queue_init(&is->subtitleq);
1801 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
1809 static void stream_component_close(VideoState *is, int stream_index)
1811 AVFormatContext *ic = is->ic;
1812 AVCodecContext *enc;
1814 if (stream_index < 0 || stream_index >= ic->nb_streams)
1816 enc = ic->streams[stream_index]->codec;
1818 switch(enc->codec_type) {
1819 case CODEC_TYPE_AUDIO:
1820 packet_queue_abort(&is->audioq);
1824 packet_queue_end(&is->audioq);
1825 if (is->reformat_ctx)
1826 av_audio_convert_free(is->reformat_ctx);
1828 case CODEC_TYPE_VIDEO:
1829 packet_queue_abort(&is->videoq);
1831 /* note: we also signal this mutex to make sure we deblock the
1832 video thread in all cases */
1833 SDL_LockMutex(is->pictq_mutex);
1834 SDL_CondSignal(is->pictq_cond);
1835 SDL_UnlockMutex(is->pictq_mutex);
1837 SDL_WaitThread(is->video_tid, NULL);
1839 packet_queue_end(&is->videoq);
1841 case CODEC_TYPE_SUBTITLE:
1842 packet_queue_abort(&is->subtitleq);
1844 /* note: we also signal this mutex to make sure we deblock the
1845 video thread in all cases */
1846 SDL_LockMutex(is->subpq_mutex);
1847 is->subtitle_stream_changed = 1;
1849 SDL_CondSignal(is->subpq_cond);
1850 SDL_UnlockMutex(is->subpq_mutex);
1852 SDL_WaitThread(is->subtitle_tid, NULL);
1854 packet_queue_end(&is->subtitleq);
1860 ic->streams[stream_index]->discard = AVDISCARD_ALL;
1862 switch(enc->codec_type) {
1863 case CODEC_TYPE_AUDIO:
1864 is->audio_st = NULL;
1865 is->audio_stream = -1;
1867 case CODEC_TYPE_VIDEO:
1868 is->video_st = NULL;
1869 is->video_stream = -1;
1871 case CODEC_TYPE_SUBTITLE:
1872 is->subtitle_st = NULL;
1873 is->subtitle_stream = -1;
1880 static void dump_stream_info(const AVFormatContext *s)
1882 AVMetadataTag *tag = NULL;
1883 while ((tag=av_metadata_get(s->metadata,"",tag,AV_METADATA_IGNORE_SUFFIX)))
1884 fprintf(stderr, "%s: %s\n", tag->key, tag->value);
1887 /* since we have only one decoding thread, we can use a global
1888 variable instead of a thread local variable */
1889 static VideoState *global_video_state;
1891 static int decode_interrupt_cb(void)
1893 return (global_video_state && global_video_state->abort_request);
1896 /* this thread gets the stream from the disk or the network */
1897 static int decode_thread(void *arg)
1899 VideoState *is = arg;
1900 AVFormatContext *ic;
1901 int err, i, ret, video_index, audio_index, subtitle_index;
1902 AVPacket pkt1, *pkt = &pkt1;
1903 AVFormatParameters params, *ap = ¶ms;
1908 subtitle_index = -1;
1909 is->video_stream = -1;
1910 is->audio_stream = -1;
1911 is->subtitle_stream = -1;
1913 global_video_state = is;
1914 url_set_interrupt_cb(decode_interrupt_cb);
1916 memset(ap, 0, sizeof(*ap));
1918 ap->width = frame_width;
1919 ap->height= frame_height;
1920 ap->time_base= (AVRational){1, 25};
1921 ap->pix_fmt = frame_pix_fmt;
1923 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1925 print_error(is->filename, err);
1932 ic->flags |= AVFMT_FLAG_GENPTS;
1934 err = av_find_stream_info(ic);
1936 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1941 ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
1943 /* if seeking requested, we execute it */
1944 if (start_time != AV_NOPTS_VALUE) {
1947 timestamp = start_time;
1948 /* add the stream start time */
1949 if (ic->start_time != AV_NOPTS_VALUE)
1950 timestamp += ic->start_time;
1951 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
1953 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1954 is->filename, (double)timestamp / AV_TIME_BASE);
1958 for(i = 0; i < ic->nb_streams; i++) {
1959 AVCodecContext *enc = ic->streams[i]->codec;
1960 ic->streams[i]->discard = AVDISCARD_ALL;
1961 switch(enc->codec_type) {
1962 case CODEC_TYPE_AUDIO:
1963 if (wanted_audio_stream-- >= 0 && !audio_disable)
1966 case CODEC_TYPE_VIDEO:
1967 if (wanted_video_stream-- >= 0 && !video_disable)
1970 case CODEC_TYPE_SUBTITLE:
1971 if (wanted_subtitle_stream-- >= 0 && !video_disable)
1979 dump_format(ic, 0, is->filename, 0);
1980 dump_stream_info(ic);
1983 /* open the streams */
1984 if (audio_index >= 0) {
1985 stream_component_open(is, audio_index);
1988 if (video_index >= 0) {
1989 stream_component_open(is, video_index);
1991 if (!display_disable)
1995 if (subtitle_index >= 0) {
1996 stream_component_open(is, subtitle_index);
1999 if (is->video_stream < 0 && is->audio_stream < 0) {
2000 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2006 if (is->abort_request)
2008 if (is->paused != is->last_paused) {
2009 is->last_paused = is->paused;
2015 #if CONFIG_RTSP_DEMUXER
2016 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2017 /* wait 10 ms to avoid trying to get another packet */
2024 int64_t seek_target= is->seek_pos;
2025 int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2026 int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2027 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2028 // of the seek_pos/seek_rel variables
2030 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2032 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2034 if (is->audio_stream >= 0) {
2035 packet_queue_flush(&is->audioq);
2036 packet_queue_put(&is->audioq, &flush_pkt);
2038 if (is->subtitle_stream >= 0) {
2039 packet_queue_flush(&is->subtitleq);
2040 packet_queue_put(&is->subtitleq, &flush_pkt);
2042 if (is->video_stream >= 0) {
2043 packet_queue_flush(&is->videoq);
2044 packet_queue_put(&is->videoq, &flush_pkt);
2051 /* if the queue are full, no need to read more */
2052 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
2053 is->videoq.size > MAX_VIDEOQ_SIZE ||
2054 is->subtitleq.size > MAX_SUBTITLEQ_SIZE) {
2059 if(url_feof(ic->pb) || eof) {
2060 if(is->video_stream >= 0){
2061 av_init_packet(pkt);
2064 pkt->stream_index= is->video_stream;
2065 packet_queue_put(&is->videoq, pkt);
2070 ret = av_read_frame(ic, pkt);
2072 if (ret == AVERROR_EOF)
2074 if (url_ferror(ic->pb))
2076 SDL_Delay(100); /* wait for user event */
2079 if (pkt->stream_index == is->audio_stream) {
2080 packet_queue_put(&is->audioq, pkt);
2081 } else if (pkt->stream_index == is->video_stream) {
2082 packet_queue_put(&is->videoq, pkt);
2083 } else if (pkt->stream_index == is->subtitle_stream) {
2084 packet_queue_put(&is->subtitleq, pkt);
2086 av_free_packet(pkt);
2089 /* wait until the end */
2090 while (!is->abort_request) {
2096 /* disable interrupting */
2097 global_video_state = NULL;
2099 /* close each stream */
2100 if (is->audio_stream >= 0)
2101 stream_component_close(is, is->audio_stream);
2102 if (is->video_stream >= 0)
2103 stream_component_close(is, is->video_stream);
2104 if (is->subtitle_stream >= 0)
2105 stream_component_close(is, is->subtitle_stream);
2107 av_close_input_file(is->ic);
2108 is->ic = NULL; /* safety */
2110 url_set_interrupt_cb(NULL);
2115 event.type = FF_QUIT_EVENT;
2116 event.user.data1 = is;
2117 SDL_PushEvent(&event);
2122 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2126 is = av_mallocz(sizeof(VideoState));
2129 av_strlcpy(is->filename, filename, sizeof(is->filename));
2130 is->iformat = iformat;
2134 /* start video display */
2135 is->pictq_mutex = SDL_CreateMutex();
2136 is->pictq_cond = SDL_CreateCond();
2138 is->subpq_mutex = SDL_CreateMutex();
2139 is->subpq_cond = SDL_CreateCond();
2141 /* add the refresh timer to draw the picture */
2142 schedule_refresh(is, 40);
2144 is->av_sync_type = av_sync_type;
2145 is->parse_tid = SDL_CreateThread(decode_thread, is);
2146 if (!is->parse_tid) {
2153 static void stream_close(VideoState *is)
2157 /* XXX: use a special url_shutdown call to abort parse cleanly */
2158 is->abort_request = 1;
2159 SDL_WaitThread(is->parse_tid, NULL);
2161 /* free all pictures */
2162 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2165 SDL_FreeYUVOverlay(vp->bmp);
2169 SDL_DestroyMutex(is->pictq_mutex);
2170 SDL_DestroyCond(is->pictq_cond);
2171 SDL_DestroyMutex(is->subpq_mutex);
2172 SDL_DestroyCond(is->subpq_cond);
2173 if (is->img_convert_ctx)
2174 sws_freeContext(is->img_convert_ctx);
2178 static void stream_cycle_channel(VideoState *is, int codec_type)
2180 AVFormatContext *ic = is->ic;
2181 int start_index, stream_index;
2184 if (codec_type == CODEC_TYPE_VIDEO)
2185 start_index = is->video_stream;
2186 else if (codec_type == CODEC_TYPE_AUDIO)
2187 start_index = is->audio_stream;
2189 start_index = is->subtitle_stream;
2190 if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
2192 stream_index = start_index;
2194 if (++stream_index >= is->ic->nb_streams)
2196 if (codec_type == CODEC_TYPE_SUBTITLE)
2203 if (stream_index == start_index)
2205 st = ic->streams[stream_index];
2206 if (st->codec->codec_type == codec_type) {
2207 /* check that parameters are OK */
2208 switch(codec_type) {
2209 case CODEC_TYPE_AUDIO:
2210 if (st->codec->sample_rate != 0 &&
2211 st->codec->channels != 0)
2214 case CODEC_TYPE_VIDEO:
2215 case CODEC_TYPE_SUBTITLE:
2223 stream_component_close(is, start_index);
2224 stream_component_open(is, stream_index);
2228 static void toggle_full_screen(void)
2230 is_full_screen = !is_full_screen;
2231 if (!fs_screen_width) {
2232 /* use default SDL method */
2233 // SDL_WM_ToggleFullScreen(screen);
2235 video_open(cur_stream);
2238 static void toggle_pause(void)
2241 stream_pause(cur_stream);
2245 static void step_to_next_frame(void)
2248 /* if the stream is paused unpause it, then step */
2249 if (cur_stream->paused)
2250 stream_pause(cur_stream);
2255 static void do_exit(void)
2259 stream_close(cur_stream);
2262 for (i = 0; i < CODEC_TYPE_NB; i++)
2263 av_free(avcodec_opts[i]);
2264 av_free(avformat_opts);
2272 static void toggle_audio_display(void)
2275 cur_stream->show_audio = !cur_stream->show_audio;
2279 /* handle an event sent by the GUI */
2280 static void event_loop(void)
2283 double incr, pos, frac;
2286 SDL_WaitEvent(&event);
2287 switch(event.type) {
2289 switch(event.key.keysym.sym) {
2295 toggle_full_screen();
2301 case SDLK_s: //S: Step to next frame
2302 step_to_next_frame();
2306 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
2310 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
2314 stream_cycle_channel(cur_stream, CODEC_TYPE_SUBTITLE);
2317 toggle_audio_display();
2332 if (seek_by_bytes) {
2333 pos = url_ftell(cur_stream->ic->pb);
2334 if (cur_stream->ic->bit_rate)
2335 incr *= cur_stream->ic->bit_rate / 60.0;
2339 stream_seek(cur_stream, pos, incr);
2341 pos = get_master_clock(cur_stream);
2343 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE));
2351 case SDL_MOUSEBUTTONDOWN:
2355 int tns, thh, tmm, tss;
2356 tns = cur_stream->ic->duration/1000000LL;
2358 tmm = (tns%3600)/60;
2360 frac = (double)event.button.x/(double)cur_stream->width;
2365 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2366 hh, mm, ss, thh, tmm, tss);
2367 ts = frac*cur_stream->ic->duration;
2368 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2369 ts += cur_stream->ic->start_time;
2370 stream_seek(cur_stream, ts, 0);
2373 case SDL_VIDEORESIZE:
2375 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2376 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2377 screen_width = cur_stream->width = event.resize.w;
2378 screen_height= cur_stream->height= event.resize.h;
2385 case FF_ALLOC_EVENT:
2386 video_open(event.user.data1);
2387 alloc_picture(event.user.data1);
2389 case FF_REFRESH_EVENT:
2390 video_refresh_timer(event.user.data1);
2398 static void opt_frame_size(const char *arg)
2400 if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2401 fprintf(stderr, "Incorrect frame size\n");
2404 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2405 fprintf(stderr, "Frame size must be a multiple of 2\n");
2410 static int opt_width(const char *opt, const char *arg)
2412 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2416 static int opt_height(const char *opt, const char *arg)
2418 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2422 static void opt_format(const char *arg)
2424 file_iformat = av_find_input_format(arg);
2425 if (!file_iformat) {
2426 fprintf(stderr, "Unknown input format: %s\n", arg);
2431 static void opt_frame_pix_fmt(const char *arg)
2433 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2436 static int opt_sync(const char *opt, const char *arg)
2438 if (!strcmp(arg, "audio"))
2439 av_sync_type = AV_SYNC_AUDIO_MASTER;
2440 else if (!strcmp(arg, "video"))
2441 av_sync_type = AV_SYNC_VIDEO_MASTER;
2442 else if (!strcmp(arg, "ext"))
2443 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2445 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2451 static int opt_seek(const char *opt, const char *arg)
2453 start_time = parse_time_or_die(opt, arg, 1);
2457 static int opt_debug(const char *opt, const char *arg)
2459 av_log_set_level(99);
2460 debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2464 static int opt_vismv(const char *opt, const char *arg)
2466 debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2470 static int opt_thread_count(const char *opt, const char *arg)
2472 thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2474 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2479 static const OptionDef options[] = {
2480 { "h", OPT_EXIT, {(void*)show_help}, "show help" },
2481 { "version", OPT_EXIT, {(void*)show_version}, "show version" },
2482 { "L", OPT_EXIT, {(void*)show_license}, "show license" },
2483 { "formats", OPT_EXIT, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },
2484 { "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
2485 { "y", HAS_ARG | OPT_FUNC2, {(void*)opt_height}, "force displayed height", "height" },
2486 { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2487 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2488 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2489 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2490 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "select desired audio stream", "stream_number" },
2491 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_video_stream}, "select desired video stream", "stream_number" },
2492 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_subtitle_stream}, "select desired subtitle stream", "stream_number" },
2493 { "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2494 { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
2495 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2496 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2497 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2498 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2499 { "debug", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
2500 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2501 { "vismv", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2502 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2503 { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2504 { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
2505 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2506 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2507 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2508 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2509 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
2510 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)", "threshold" },
2511 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
2512 { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2513 { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2514 { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
2518 static void show_help(void)
2520 printf("usage: ffplay [options] input_file\n"
2521 "Simple media player\n");
2523 show_help_options(options, "Main options:\n",
2525 show_help_options(options, "\nAdvanced options:\n",
2526 OPT_EXPERT, OPT_EXPERT);
2527 printf("\nWhile playing:\n"
2529 "f toggle full screen\n"
2531 "a cycle audio channel\n"
2532 "v cycle video channel\n"
2533 "t cycle subtitle channel\n"
2534 "w show audio waves\n"
2535 "left/right seek backward/forward 10 seconds\n"
2536 "down/up seek backward/forward 1 minute\n"
2537 "mouse click seek to percentage in file corresponding to fraction of width\n"
2541 static void opt_input_file(const char *filename)
2543 if (!strcmp(filename, "-"))
2545 input_filename = filename;
2548 /* Called from the main */
2549 int main(int argc, char **argv)
2553 /* register all codecs, demux and protocols */
2554 avcodec_register_all();
2555 avdevice_register_all();
2558 for(i=0; i<CODEC_TYPE_NB; i++){
2559 avcodec_opts[i]= avcodec_alloc_context2(i);
2561 avformat_opts = avformat_alloc_context();
2562 sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
2566 parse_options(argc, argv, options, opt_input_file);
2568 if (!input_filename) {
2569 fprintf(stderr, "An input file must be specified\n");
2573 if (display_disable) {
2576 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2577 #if !defined(__MINGW32__) && !defined(__APPLE__)
2578 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2580 if (SDL_Init (flags)) {
2581 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2585 if (!display_disable) {
2586 #if HAVE_SDL_VIDEO_SIZE
2587 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2588 fs_screen_width = vi->current_w;
2589 fs_screen_height = vi->current_h;
2593 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2594 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
2595 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2596 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2598 av_init_packet(&flush_pkt);
2599 flush_pkt.data= "FLUSH";
2601 cur_stream = stream_open(input_filename, file_iformat);