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
30 #include <SDL_thread.h>
33 #undef main /* We don't want SDL to override our main() */
46 DosGetInfoBlocks(&tib, &pib);
48 // Change flag from VIO to PM:
49 if (pib->pib_ultype==2) pib->pib_ultype = 3;
57 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
58 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
59 #define MAX_SUBTITLEQ_SIZE (5 * 16 * 1024)
61 /* SDL audio buffer size, in samples. Should be small to have precise
62 A/V sync as SDL does not have hardware buffer fullness info. */
63 #define SDL_AUDIO_BUFFER_SIZE 1024
65 /* no AV sync correction is done if below the AV sync threshold */
66 #define AV_SYNC_THRESHOLD 0.01
67 /* no AV correction is done if too big error */
68 #define AV_NOSYNC_THRESHOLD 10.0
70 /* maximum audio speed change to get correct sync */
71 #define SAMPLE_CORRECTION_PERCENT_MAX 10
73 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
74 #define AUDIO_DIFF_AVG_NB 20
76 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
77 #define SAMPLE_ARRAY_SIZE (2*65536)
79 static int sws_flags = SWS_BICUBIC;
81 typedef struct PacketQueue {
82 AVPacketList *first_pkt, *last_pkt;
90 #define VIDEO_PICTURE_QUEUE_SIZE 1
91 #define SUBPICTURE_QUEUE_SIZE 4
93 typedef struct VideoPicture {
94 double pts; ///<presentation time stamp for this picture
96 int width, height; /* source height & width */
100 typedef struct SubPicture {
101 double pts; /* presentation time stamp for this picture */
106 AV_SYNC_AUDIO_MASTER, /* default choice */
107 AV_SYNC_VIDEO_MASTER,
108 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
111 typedef struct VideoState {
112 SDL_Thread *parse_tid;
113 SDL_Thread *video_tid;
114 AVInputFormat *iformat;
123 int dtg_active_format;
128 double external_clock; /* external clock base */
129 int64_t external_clock_time;
132 double audio_diff_cum; /* used for AV difference average computation */
133 double audio_diff_avg_coef;
134 double audio_diff_threshold;
135 int audio_diff_avg_count;
138 int audio_hw_buf_size;
139 /* samples output by the codec. we reserve more space for avsync
141 DECLARE_ALIGNED(16,uint8_t,audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
142 unsigned int audio_buf_size; /* in bytes */
143 int audio_buf_index; /* in bytes */
145 uint8_t *audio_pkt_data;
148 int show_audio; /* if true, display audio samples */
149 int16_t sample_array[SAMPLE_ARRAY_SIZE];
150 int sample_array_index;
153 SDL_Thread *subtitle_tid;
155 int subtitle_stream_changed;
156 AVStream *subtitle_st;
157 PacketQueue subtitleq;
158 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
159 int subpq_size, subpq_rindex, subpq_windex;
160 SDL_mutex *subpq_mutex;
161 SDL_cond *subpq_cond;
164 double frame_last_pts;
165 double frame_last_delay;
166 double video_clock; ///<pts of last decoded frame / predicted pts of next decoded frame
170 double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
171 int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
172 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
173 int pictq_size, pictq_rindex, pictq_windex;
174 SDL_mutex *pictq_mutex;
175 SDL_cond *pictq_cond;
177 // QETimer *video_timer;
179 int width, height, xleft, ytop;
182 void show_help(void);
183 static int audio_write_get_buf_size(VideoState *is);
185 /* options specified by the user */
186 static AVInputFormat *file_iformat;
187 static const char *input_filename;
188 static int fs_screen_width;
189 static int fs_screen_height;
190 static int screen_width = 0;
191 static int screen_height = 0;
192 static int frame_width = 0;
193 static int frame_height = 0;
194 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
195 static int audio_disable;
196 static int video_disable;
197 static int wanted_audio_stream= 0;
198 static int seek_by_bytes;
199 static int display_disable;
200 static int show_status;
201 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
202 static int64_t start_time = AV_NOPTS_VALUE;
203 static int debug = 0;
204 static int debug_mv = 0;
206 static int thread_count = 1;
207 static int workaround_bugs = 1;
209 static int genpts = 0;
210 static int lowres = 0;
211 static int idct = FF_IDCT_AUTO;
212 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
213 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
214 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
215 static int error_resilience = FF_ER_CAREFUL;
216 static int error_concealment = 3;
217 static int decoder_reorder_pts= 0;
219 /* current context */
220 static int is_full_screen;
221 static VideoState *cur_stream;
222 static int64_t audio_callback_time;
226 #define FF_ALLOC_EVENT (SDL_USEREVENT)
227 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
228 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
232 /* packet queue handling */
233 static void packet_queue_init(PacketQueue *q)
235 memset(q, 0, sizeof(PacketQueue));
236 q->mutex = SDL_CreateMutex();
237 q->cond = SDL_CreateCond();
240 static void packet_queue_flush(PacketQueue *q)
242 AVPacketList *pkt, *pkt1;
244 SDL_LockMutex(q->mutex);
245 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
247 av_free_packet(&pkt->pkt);
254 SDL_UnlockMutex(q->mutex);
257 static void packet_queue_end(PacketQueue *q)
259 packet_queue_flush(q);
260 SDL_DestroyMutex(q->mutex);
261 SDL_DestroyCond(q->cond);
264 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
268 /* duplicate the packet */
269 if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
272 pkt1 = av_malloc(sizeof(AVPacketList));
279 SDL_LockMutex(q->mutex);
285 q->last_pkt->next = pkt1;
288 q->size += pkt1->pkt.size;
289 /* XXX: should duplicate packet data in DV case */
290 SDL_CondSignal(q->cond);
292 SDL_UnlockMutex(q->mutex);
296 static void packet_queue_abort(PacketQueue *q)
298 SDL_LockMutex(q->mutex);
300 q->abort_request = 1;
302 SDL_CondSignal(q->cond);
304 SDL_UnlockMutex(q->mutex);
307 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
308 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
313 SDL_LockMutex(q->mutex);
316 if (q->abort_request) {
323 q->first_pkt = pkt1->next;
327 q->size -= pkt1->pkt.size;
336 SDL_CondWait(q->cond, q->mutex);
339 SDL_UnlockMutex(q->mutex);
343 static inline void fill_rectangle(SDL_Surface *screen,
344 int x, int y, int w, int h, int color)
351 SDL_FillRect(screen, &rect, color);
355 /* draw only the border of a rectangle */
356 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
360 /* fill the background */
364 w2 = s->width - (x + w);
370 h2 = s->height - (y + h);
373 fill_rectangle(screen,
377 fill_rectangle(screen,
378 s->xleft + s->width - w2, s->ytop,
381 fill_rectangle(screen,
382 s->xleft + w1, s->ytop,
383 s->width - w1 - w2, h1,
385 fill_rectangle(screen,
386 s->xleft + w1, s->ytop + s->height - h2,
387 s->width - w1 - w2, h2,
395 #define ONE_HALF (1 << (SCALEBITS - 1))
396 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
398 #define RGB_TO_Y_CCIR(r, g, b) \
399 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
400 FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
402 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
403 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 + \
404 FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
406 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
407 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 - \
408 FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
410 #define ALPHA_BLEND(a, oldp, newp, s)\
411 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
413 #define RGBA_IN(r, g, b, a, s)\
415 unsigned int v = ((const uint32_t *)(s))[0];\
416 a = (v >> 24) & 0xff;\
417 r = (v >> 16) & 0xff;\
418 g = (v >> 8) & 0xff;\
422 #define YUVA_IN(y, u, v, a, s, pal)\
424 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)s];\
425 a = (val >> 24) & 0xff;\
426 y = (val >> 16) & 0xff;\
427 u = (val >> 8) & 0xff;\
431 #define YUVA_OUT(d, y, u, v, a)\
433 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
439 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect)
441 int wrap, wrap3, width2, skip2;
442 int y, u, v, a, u1, v1, a1, w, h;
443 uint8_t *lum, *cb, *cr;
447 lum = dst->data[0] + rect->y * dst->linesize[0];
448 cb = dst->data[1] + (rect->y >> 1) * dst->linesize[1];
449 cr = dst->data[2] + (rect->y >> 1) * dst->linesize[2];
451 width2 = (rect->w + 1) >> 1;
452 skip2 = rect->x >> 1;
453 wrap = dst->linesize[0];
454 wrap3 = rect->linesize;
456 pal = rect->rgba_palette; /* Now in YCrCb! */
464 YUVA_IN(y, u, v, a, p, pal);
465 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
466 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
467 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
473 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
474 YUVA_IN(y, u, v, a, p, pal);
478 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
480 YUVA_IN(y, u, v, a, p + BPP, pal);
484 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
485 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
486 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
493 YUVA_IN(y, u, v, a, p, pal);
494 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
495 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
496 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
498 p += wrap3 + (wrap3 - rect->w * BPP);
499 lum += wrap + (wrap - rect->w - rect->x);
500 cb += dst->linesize[1] - width2 - skip2;
501 cr += dst->linesize[2] - width2 - skip2;
503 for(h = rect->h - (rect->y & 1); h >= 2; h -= 2) {
509 YUVA_IN(y, u, v, a, p, pal);
513 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
516 YUVA_IN(y, u, v, a, p, pal);
520 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
521 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
522 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
528 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
529 YUVA_IN(y, u, v, a, p, pal);
533 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
535 YUVA_IN(y, u, v, a, p, pal);
539 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
543 YUVA_IN(y, u, v, a, p, pal);
547 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
549 YUVA_IN(y, u, v, a, p, pal);
553 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
555 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
556 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
560 p += -wrap3 + 2 * BPP;
564 YUVA_IN(y, u, v, a, p, pal);
568 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
571 YUVA_IN(y, u, v, a, p, pal);
575 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
576 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
577 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
583 p += wrap3 + (wrap3 - rect->w * BPP);
584 lum += wrap + (wrap - rect->w - rect->x);
585 cb += dst->linesize[1] - width2 - skip2;
586 cr += dst->linesize[2] - width2 - skip2;
588 /* handle odd height */
595 YUVA_IN(y, u, v, a, p, pal);
596 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
597 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
598 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
604 for(w = rect->w - (rect->x & 1); w >= 2; w -= 2) {
605 YUVA_IN(y, u, v, a, p, pal);
609 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
611 YUVA_IN(y, u, v, a, p + BPP, pal);
615 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
616 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
617 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
624 YUVA_IN(y, u, v, a, p, pal);
625 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
626 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
627 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
632 static void free_subpicture(SubPicture *sp)
636 for (i = 0; i < sp->sub.num_rects; i++)
638 av_free(sp->sub.rects[i].bitmap);
639 av_free(sp->sub.rects[i].rgba_palette);
642 av_free(sp->sub.rects);
644 memset(&sp->sub, 0, sizeof(AVSubtitle));
647 static void video_image_display(VideoState *is)
653 int width, height, x, y;
657 vp = &is->pictq[is->pictq_rindex];
659 /* XXX: use variable in the frame */
660 if (is->video_st->codec->sample_aspect_ratio.num == 0)
663 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio)
664 * is->video_st->codec->width / is->video_st->codec->height;;
665 if (aspect_ratio <= 0.0)
666 aspect_ratio = (float)is->video_st->codec->width /
667 (float)is->video_st->codec->height;
668 /* if an active format is indicated, then it overrides the
671 if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
672 is->dtg_active_format = is->video_st->codec->dtg_active_format;
673 printf("dtg_active_format=%d\n", is->dtg_active_format);
677 switch(is->video_st->codec->dtg_active_format) {
678 case FF_DTG_AFD_SAME:
683 aspect_ratio = 4.0 / 3.0;
685 case FF_DTG_AFD_16_9:
686 aspect_ratio = 16.0 / 9.0;
688 case FF_DTG_AFD_14_9:
689 aspect_ratio = 14.0 / 9.0;
691 case FF_DTG_AFD_4_3_SP_14_9:
692 aspect_ratio = 14.0 / 9.0;
694 case FF_DTG_AFD_16_9_SP_14_9:
695 aspect_ratio = 14.0 / 9.0;
697 case FF_DTG_AFD_SP_4_3:
698 aspect_ratio = 4.0 / 3.0;
705 if (is->subpq_size > 0)
707 sp = &is->subpq[is->subpq_rindex];
709 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
711 SDL_LockYUVOverlay (vp->bmp);
713 pict.data[0] = vp->bmp->pixels[0];
714 pict.data[1] = vp->bmp->pixels[2];
715 pict.data[2] = vp->bmp->pixels[1];
717 pict.linesize[0] = vp->bmp->pitches[0];
718 pict.linesize[1] = vp->bmp->pitches[2];
719 pict.linesize[2] = vp->bmp->pitches[1];
721 for (i = 0; i < sp->sub.num_rects; i++)
722 blend_subrect(&pict, &sp->sub.rects[i]);
724 SDL_UnlockYUVOverlay (vp->bmp);
730 /* XXX: we suppose the screen has a 1.0 pixel ratio */
732 width = ((int)rint(height * aspect_ratio)) & -3;
733 if (width > is->width) {
735 height = ((int)rint(width / aspect_ratio)) & -3;
737 x = (is->width - width) / 2;
738 y = (is->height - height) / 2;
739 if (!is->no_background) {
740 /* fill the background */
741 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
743 is->no_background = 0;
745 rect.x = is->xleft + x;
746 rect.y = is->ytop + y;
749 SDL_DisplayYUVOverlay(vp->bmp, &rect);
752 fill_rectangle(screen,
753 is->xleft, is->ytop, is->width, is->height,
754 QERGB(0x00, 0x00, 0x00));
759 static inline int compute_mod(int a, int b)
768 static void video_audio_display(VideoState *s)
770 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
771 int ch, channels, h, h2, bgcolor, fgcolor;
774 /* compute display index : center on currently output samples */
775 channels = s->audio_st->codec->channels;
776 nb_display_channels = channels;
779 delay = audio_write_get_buf_size(s);
782 /* to be more precise, we take into account the time spent since
783 the last buffer computation */
784 if (audio_callback_time) {
785 time_diff = av_gettime() - audio_callback_time;
786 delay += (time_diff * s->audio_st->codec->sample_rate) / 1000000;
789 delay -= s->width / 2;
790 if (delay < s->width)
793 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
796 for(i=0; i<1000; i+=channels){
797 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
798 int a= s->sample_array[idx];
799 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
800 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
801 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
803 if(h<score && (b^c)<0){
809 s->last_i_start = i_start;
811 i_start = s->last_i_start;
814 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
815 fill_rectangle(screen,
816 s->xleft, s->ytop, s->width, s->height,
819 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
821 /* total height for one channel */
822 h = s->height / nb_display_channels;
823 /* graph height / 2 */
825 for(ch = 0;ch < nb_display_channels; ch++) {
827 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
828 for(x = 0; x < s->width; x++) {
829 y = (s->sample_array[i] * h2) >> 15;
836 fill_rectangle(screen,
837 s->xleft + x, ys, 1, y,
840 if (i >= SAMPLE_ARRAY_SIZE)
841 i -= SAMPLE_ARRAY_SIZE;
845 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
847 for(ch = 1;ch < nb_display_channels; ch++) {
848 y = s->ytop + ch * h;
849 fill_rectangle(screen,
850 s->xleft, y, s->width, 1,
853 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
856 static int video_open(VideoState *is){
857 int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
860 if(is_full_screen) flags |= SDL_FULLSCREEN;
861 else flags |= SDL_RESIZABLE;
863 if (is_full_screen && fs_screen_width) {
865 h = fs_screen_height;
866 } else if(!is_full_screen && screen_width){
869 }else if (is->video_st && is->video_st->codec->width){
870 w = is->video_st->codec->width;
871 h = is->video_st->codec->height;
876 #ifndef CONFIG_DARWIN
877 screen = SDL_SetVideoMode(w, h, 0, flags);
879 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
880 screen = SDL_SetVideoMode(w, h, 24, flags);
883 fprintf(stderr, "SDL: could not set video mode - exiting\n");
886 SDL_WM_SetCaption("FFplay", "FFplay");
888 is->width = screen->w;
889 is->height = screen->h;
894 /* display the current picture, if any */
895 static void video_display(VideoState *is)
898 video_open(cur_stream);
899 if (is->audio_st && is->show_audio)
900 video_audio_display(is);
901 else if (is->video_st)
902 video_image_display(is);
905 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
908 event.type = FF_REFRESH_EVENT;
909 event.user.data1 = opaque;
910 SDL_PushEvent(&event);
911 return 0; /* 0 means stop timer */
914 /* schedule a video refresh in 'delay' ms */
915 static void schedule_refresh(VideoState *is, int delay)
917 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
920 /* get the current audio clock value */
921 static double get_audio_clock(VideoState *is)
924 int hw_buf_size, bytes_per_sec;
925 pts = is->audio_clock;
926 hw_buf_size = audio_write_get_buf_size(is);
929 bytes_per_sec = is->audio_st->codec->sample_rate *
930 2 * is->audio_st->codec->channels;
933 pts -= (double)hw_buf_size / bytes_per_sec;
937 /* get the current video clock value */
938 static double get_video_clock(VideoState *is)
944 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
946 return is->video_current_pts + delta;
949 /* get the current external clock value */
950 static double get_external_clock(VideoState *is)
954 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
957 /* get the current master clock value */
958 static double get_master_clock(VideoState *is)
962 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
964 val = get_video_clock(is);
966 val = get_audio_clock(is);
967 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
969 val = get_audio_clock(is);
971 val = get_video_clock(is);
973 val = get_external_clock(is);
978 /* seek in the stream */
979 static void stream_seek(VideoState *is, int64_t pos, int rel)
983 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
985 is->seek_flags |= AVSEEK_FLAG_BYTE;
990 /* pause or resume the video */
991 static void stream_pause(VideoState *is)
993 is->paused = !is->paused;
995 is->video_current_pts = get_video_clock(is);
996 is->frame_timer += (av_gettime() - is->video_current_pts_time) / 1000000.0;
1000 /* called to display each frame */
1001 static void video_refresh_timer(void *opaque)
1003 VideoState *is = opaque;
1005 double actual_delay, delay, sync_threshold, ref_clock, diff;
1007 SubPicture *sp, *sp2;
1010 if (is->pictq_size == 0) {
1011 /* if no picture, need to wait */
1012 schedule_refresh(is, 1);
1014 /* dequeue the picture */
1015 vp = &is->pictq[is->pictq_rindex];
1017 /* update current video pts */
1018 is->video_current_pts = vp->pts;
1019 is->video_current_pts_time = av_gettime();
1021 /* compute nominal delay */
1022 delay = vp->pts - is->frame_last_pts;
1023 if (delay <= 0 || delay >= 1.0) {
1024 /* if incorrect delay, use previous one */
1025 delay = is->frame_last_delay;
1027 is->frame_last_delay = delay;
1028 is->frame_last_pts = vp->pts;
1030 /* update delay to follow master synchronisation source */
1031 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1032 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1033 /* if video is slave, we try to correct big delays by
1034 duplicating or deleting a frame */
1035 ref_clock = get_master_clock(is);
1036 diff = vp->pts - ref_clock;
1038 /* skip or repeat frame. We take into account the
1039 delay to compute the threshold. I still don't know
1040 if it is the best guess */
1041 sync_threshold = AV_SYNC_THRESHOLD;
1042 if (delay > sync_threshold)
1043 sync_threshold = delay;
1044 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1045 if (diff <= -sync_threshold)
1047 else if (diff >= sync_threshold)
1052 is->frame_timer += delay;
1053 /* compute the REAL delay (we need to do that to avoid
1055 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
1056 if (actual_delay < 0.010) {
1057 /* XXX: should skip picture */
1058 actual_delay = 0.010;
1060 /* launch timer for next picture */
1061 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
1063 #if defined(DEBUG_SYNC)
1064 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
1065 delay, actual_delay, vp->pts, -diff);
1068 if(is->subtitle_st) {
1069 if (is->subtitle_stream_changed) {
1070 SDL_LockMutex(is->subpq_mutex);
1072 while (is->subpq_size) {
1073 free_subpicture(&is->subpq[is->subpq_rindex]);
1075 /* update queue size and signal for next picture */
1076 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1077 is->subpq_rindex = 0;
1081 is->subtitle_stream_changed = 0;
1083 SDL_CondSignal(is->subpq_cond);
1084 SDL_UnlockMutex(is->subpq_mutex);
1086 if (is->subpq_size > 0) {
1087 sp = &is->subpq[is->subpq_rindex];
1089 if (is->subpq_size > 1)
1090 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1094 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1095 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1097 free_subpicture(sp);
1099 /* update queue size and signal for next picture */
1100 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1101 is->subpq_rindex = 0;
1103 SDL_LockMutex(is->subpq_mutex);
1105 SDL_CondSignal(is->subpq_cond);
1106 SDL_UnlockMutex(is->subpq_mutex);
1112 /* display picture */
1115 /* update queue size and signal for next picture */
1116 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1117 is->pictq_rindex = 0;
1119 SDL_LockMutex(is->pictq_mutex);
1121 SDL_CondSignal(is->pictq_cond);
1122 SDL_UnlockMutex(is->pictq_mutex);
1124 } else if (is->audio_st) {
1125 /* draw the next audio frame */
1127 schedule_refresh(is, 40);
1129 /* if only audio stream, then display the audio bars (better
1130 than nothing, just to test the implementation */
1132 /* display picture */
1135 schedule_refresh(is, 100);
1138 static int64_t last_time;
1140 int aqsize, vqsize, sqsize;
1143 cur_time = av_gettime();
1144 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
1149 aqsize = is->audioq.size;
1151 vqsize = is->videoq.size;
1152 if (is->subtitle_st)
1153 sqsize = is->subtitleq.size;
1155 if (is->audio_st && is->video_st)
1156 av_diff = get_audio_clock(is) - get_video_clock(is);
1157 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB sq=%5dB \r",
1158 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize);
1160 last_time = cur_time;
1165 /* allocate a picture (needs to do that in main thread to avoid
1166 potential locking problems */
1167 static void alloc_picture(void *opaque)
1169 VideoState *is = opaque;
1172 vp = &is->pictq[is->pictq_windex];
1175 SDL_FreeYUVOverlay(vp->bmp);
1178 /* XXX: use generic function */
1179 /* XXX: disable overlay if no hardware acceleration or if RGB format */
1180 switch(is->video_st->codec->pix_fmt) {
1181 case PIX_FMT_YUV420P:
1182 case PIX_FMT_YUV422P:
1183 case PIX_FMT_YUV444P:
1184 case PIX_FMT_YUYV422:
1185 case PIX_FMT_YUV410P:
1186 case PIX_FMT_YUV411P:
1194 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
1195 is->video_st->codec->height,
1198 vp->width = is->video_st->codec->width;
1199 vp->height = is->video_st->codec->height;
1201 SDL_LockMutex(is->pictq_mutex);
1203 SDL_CondSignal(is->pictq_cond);
1204 SDL_UnlockMutex(is->pictq_mutex);
1209 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1211 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
1216 static struct SwsContext *img_convert_ctx;
1218 /* wait until we have space to put a new picture */
1219 SDL_LockMutex(is->pictq_mutex);
1220 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1221 !is->videoq.abort_request) {
1222 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1224 SDL_UnlockMutex(is->pictq_mutex);
1226 if (is->videoq.abort_request)
1229 vp = &is->pictq[is->pictq_windex];
1231 /* alloc or resize hardware picture buffer */
1233 vp->width != is->video_st->codec->width ||
1234 vp->height != is->video_st->codec->height) {
1239 /* the allocation must be done in the main thread to avoid
1241 event.type = FF_ALLOC_EVENT;
1242 event.user.data1 = is;
1243 SDL_PushEvent(&event);
1245 /* wait until the picture is allocated */
1246 SDL_LockMutex(is->pictq_mutex);
1247 while (!vp->allocated && !is->videoq.abort_request) {
1248 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1250 SDL_UnlockMutex(is->pictq_mutex);
1252 if (is->videoq.abort_request)
1256 /* if the frame is not skipped, then display it */
1258 /* get a pointer on the bitmap */
1259 SDL_LockYUVOverlay (vp->bmp);
1261 dst_pix_fmt = PIX_FMT_YUV420P;
1262 pict.data[0] = vp->bmp->pixels[0];
1263 pict.data[1] = vp->bmp->pixels[2];
1264 pict.data[2] = vp->bmp->pixels[1];
1266 pict.linesize[0] = vp->bmp->pitches[0];
1267 pict.linesize[1] = vp->bmp->pitches[2];
1268 pict.linesize[2] = vp->bmp->pitches[1];
1269 if (img_convert_ctx == NULL) {
1270 img_convert_ctx = sws_getContext(is->video_st->codec->width,
1271 is->video_st->codec->height, 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 (img_convert_ctx == NULL) {
1275 fprintf(stderr, "Cannot initialize the conversion context\n");
1279 sws_scale(img_convert_ctx, src_frame->data, src_frame->linesize,
1280 0, is->video_st->codec->height, pict.data, pict.linesize);
1281 /* update the bitmap content */
1282 SDL_UnlockYUVOverlay(vp->bmp);
1286 /* now we can update the picture count */
1287 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1288 is->pictq_windex = 0;
1289 SDL_LockMutex(is->pictq_mutex);
1291 SDL_UnlockMutex(is->pictq_mutex);
1297 * compute the exact PTS for the picture if it is omitted in the stream
1298 * @param pts1 the dts of the pkt / pts of the frame
1300 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
1302 double frame_delay, pts;
1307 /* update video clock with pts, if present */
1308 is->video_clock = pts;
1310 pts = is->video_clock;
1312 /* update video clock for next frame */
1313 frame_delay = av_q2d(is->video_st->codec->time_base);
1314 /* for MPEG2, the frame can be repeated, so we update the
1315 clock accordingly */
1316 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1317 is->video_clock += frame_delay;
1319 #if defined(DEBUG_SYNC) && 0
1322 if (src_frame->pict_type == FF_B_TYPE)
1324 else if (src_frame->pict_type == FF_I_TYPE)
1328 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1332 return queue_picture(is, src_frame, pts);
1335 static uint64_t global_video_pkt_pts= AV_NOPTS_VALUE;
1337 static int my_get_buffer(struct AVCodecContext *c, AVFrame *pic){
1338 int ret= avcodec_default_get_buffer(c, pic);
1339 uint64_t *pts= av_malloc(sizeof(uint64_t));
1340 *pts= global_video_pkt_pts;
1345 static void my_release_buffer(struct AVCodecContext *c, AVFrame *pic){
1346 if(pic) av_freep(&pic->opaque);
1347 avcodec_default_release_buffer(c, pic);
1350 static int video_thread(void *arg)
1352 VideoState *is = arg;
1353 AVPacket pkt1, *pkt = &pkt1;
1354 int len1, got_picture;
1355 AVFrame *frame= avcodec_alloc_frame();
1359 while (is->paused && !is->videoq.abort_request) {
1362 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1365 if(pkt->data == flush_pkt.data){
1366 avcodec_flush_buffers(is->video_st->codec);
1370 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1371 this packet, if any */
1372 global_video_pkt_pts= pkt->pts;
1373 len1 = avcodec_decode_video(is->video_st->codec,
1374 frame, &got_picture,
1375 pkt->data, pkt->size);
1377 if( (decoder_reorder_pts || pkt->dts == AV_NOPTS_VALUE)
1378 && frame->opaque && *(uint64_t*)frame->opaque != AV_NOPTS_VALUE)
1379 pts= *(uint64_t*)frame->opaque;
1380 else if(pkt->dts != AV_NOPTS_VALUE)
1384 pts *= av_q2d(is->video_st->time_base);
1389 if (output_picture2(is, frame, pts) < 0)
1392 av_free_packet(pkt);
1395 stream_pause(cur_stream);
1402 static int subtitle_thread(void *arg)
1404 VideoState *is = arg;
1406 AVPacket pkt1, *pkt = &pkt1;
1407 int len1, got_subtitle;
1410 int r, g, b, y, u, v, a;
1413 while (is->paused && !is->subtitleq.abort_request) {
1416 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1419 if(pkt->data == flush_pkt.data){
1420 avcodec_flush_buffers(is->subtitle_st->codec);
1423 SDL_LockMutex(is->subpq_mutex);
1424 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1425 !is->subtitleq.abort_request) {
1426 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1428 SDL_UnlockMutex(is->subpq_mutex);
1430 if (is->subtitleq.abort_request)
1433 sp = &is->subpq[is->subpq_windex];
1435 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1436 this packet, if any */
1438 if (pkt->pts != AV_NOPTS_VALUE)
1439 pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1441 len1 = avcodec_decode_subtitle(is->subtitle_st->codec,
1442 &sp->sub, &got_subtitle,
1443 pkt->data, pkt->size);
1446 if (got_subtitle && sp->sub.format == 0) {
1449 for (i = 0; i < sp->sub.num_rects; i++)
1451 for (j = 0; j < sp->sub.rects[i].nb_colors; j++)
1453 RGBA_IN(r, g, b, a, sp->sub.rects[i].rgba_palette + j);
1454 y = RGB_TO_Y_CCIR(r, g, b);
1455 u = RGB_TO_U_CCIR(r, g, b, 0);
1456 v = RGB_TO_V_CCIR(r, g, b, 0);
1457 YUVA_OUT(sp->sub.rects[i].rgba_palette + j, y, u, v, a);
1461 /* now we can update the picture count */
1462 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1463 is->subpq_windex = 0;
1464 SDL_LockMutex(is->subpq_mutex);
1466 SDL_UnlockMutex(is->subpq_mutex);
1468 av_free_packet(pkt);
1471 // stream_pause(cur_stream);
1477 /* copy samples for viewing in editor window */
1478 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1480 int size, len, channels;
1482 channels = is->audio_st->codec->channels;
1484 size = samples_size / sizeof(short);
1486 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1489 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1491 is->sample_array_index += len;
1492 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1493 is->sample_array_index = 0;
1498 /* return the new audio buffer size (samples can be added or deleted
1499 to get better sync if video or external master clock) */
1500 static int synchronize_audio(VideoState *is, short *samples,
1501 int samples_size1, double pts)
1503 int n, samples_size;
1506 n = 2 * is->audio_st->codec->channels;
1507 samples_size = samples_size1;
1509 /* if not master, then we try to remove or add samples to correct the clock */
1510 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1511 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1512 double diff, avg_diff;
1513 int wanted_size, min_size, max_size, nb_samples;
1515 ref_clock = get_master_clock(is);
1516 diff = get_audio_clock(is) - ref_clock;
1518 if (diff < AV_NOSYNC_THRESHOLD) {
1519 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1520 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1521 /* not enough measures to have a correct estimate */
1522 is->audio_diff_avg_count++;
1524 /* estimate the A-V difference */
1525 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1527 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1528 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1529 nb_samples = samples_size / n;
1531 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1532 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1533 if (wanted_size < min_size)
1534 wanted_size = min_size;
1535 else if (wanted_size > max_size)
1536 wanted_size = max_size;
1538 /* add or remove samples to correction the synchro */
1539 if (wanted_size < samples_size) {
1540 /* remove samples */
1541 samples_size = wanted_size;
1542 } else if (wanted_size > samples_size) {
1543 uint8_t *samples_end, *q;
1547 nb = (samples_size - wanted_size);
1548 samples_end = (uint8_t *)samples + samples_size - n;
1549 q = samples_end + n;
1551 memcpy(q, samples_end, n);
1555 samples_size = wanted_size;
1559 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1560 diff, avg_diff, samples_size - samples_size1,
1561 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1565 /* too big difference : may be initial PTS errors, so
1567 is->audio_diff_avg_count = 0;
1568 is->audio_diff_cum = 0;
1572 return samples_size;
1575 /* decode one audio frame and returns its uncompressed size */
1576 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, int buf_size, double *pts_ptr)
1578 AVPacket *pkt = &is->audio_pkt;
1579 int n, len1, data_size;
1583 /* NOTE: the audio packet can contain several frames */
1584 while (is->audio_pkt_size > 0) {
1585 data_size = buf_size;
1586 len1 = avcodec_decode_audio2(is->audio_st->codec,
1587 (int16_t *)audio_buf, &data_size,
1588 is->audio_pkt_data, is->audio_pkt_size);
1590 /* if error, we skip the frame */
1591 is->audio_pkt_size = 0;
1595 is->audio_pkt_data += len1;
1596 is->audio_pkt_size -= len1;
1599 /* if no pts, then compute it */
1600 pts = is->audio_clock;
1602 n = 2 * is->audio_st->codec->channels;
1603 is->audio_clock += (double)data_size /
1604 (double)(n * is->audio_st->codec->sample_rate);
1605 #if defined(DEBUG_SYNC)
1607 static double last_clock;
1608 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1609 is->audio_clock - last_clock,
1610 is->audio_clock, pts);
1611 last_clock = is->audio_clock;
1617 /* free the current packet */
1619 av_free_packet(pkt);
1621 if (is->paused || is->audioq.abort_request) {
1625 /* read next packet */
1626 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1628 if(pkt->data == flush_pkt.data){
1629 avcodec_flush_buffers(is->audio_st->codec);
1633 is->audio_pkt_data = pkt->data;
1634 is->audio_pkt_size = pkt->size;
1636 /* if update the audio clock with the pts */
1637 if (pkt->pts != AV_NOPTS_VALUE) {
1638 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1643 /* get the current audio output buffer size, in samples. With SDL, we
1644 cannot have a precise information */
1645 static int audio_write_get_buf_size(VideoState *is)
1647 return is->audio_buf_size - is->audio_buf_index;
1651 /* prepare a new audio buffer */
1652 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1654 VideoState *is = opaque;
1655 int audio_size, len1;
1658 audio_callback_time = av_gettime();
1661 if (is->audio_buf_index >= is->audio_buf_size) {
1662 audio_size = audio_decode_frame(is, is->audio_buf, sizeof(is->audio_buf), &pts);
1663 if (audio_size < 0) {
1664 /* if error, just output silence */
1665 is->audio_buf_size = 1024;
1666 memset(is->audio_buf, 0, is->audio_buf_size);
1669 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1670 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1672 is->audio_buf_size = audio_size;
1674 is->audio_buf_index = 0;
1676 len1 = is->audio_buf_size - is->audio_buf_index;
1679 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1682 is->audio_buf_index += len1;
1686 /* open a given stream. Return 0 if OK */
1687 static int stream_component_open(VideoState *is, int stream_index)
1689 AVFormatContext *ic = is->ic;
1690 AVCodecContext *enc;
1692 SDL_AudioSpec wanted_spec, spec;
1694 if (stream_index < 0 || stream_index >= ic->nb_streams)
1696 enc = ic->streams[stream_index]->codec;
1698 /* prepare audio output */
1699 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1700 wanted_spec.freq = enc->sample_rate;
1701 wanted_spec.format = AUDIO_S16SYS;
1702 /* hack for AC3. XXX: suppress that */
1703 if (enc->channels > 2)
1705 wanted_spec.channels = enc->channels;
1706 wanted_spec.silence = 0;
1707 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1708 wanted_spec.callback = sdl_audio_callback;
1709 wanted_spec.userdata = is;
1710 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1711 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1714 is->audio_hw_buf_size = spec.size;
1717 codec = avcodec_find_decoder(enc->codec_id);
1718 enc->debug_mv = debug_mv;
1720 enc->workaround_bugs = workaround_bugs;
1721 enc->lowres = lowres;
1722 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1723 enc->idct_algo= idct;
1724 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1725 enc->skip_frame= skip_frame;
1726 enc->skip_idct= skip_idct;
1727 enc->skip_loop_filter= skip_loop_filter;
1728 enc->error_resilience= error_resilience;
1729 enc->error_concealment= error_concealment;
1731 avcodec_open(enc, codec) < 0)
1734 avcodec_thread_init(enc, thread_count);
1735 enc->thread_count= thread_count;
1736 switch(enc->codec_type) {
1737 case CODEC_TYPE_AUDIO:
1738 is->audio_stream = stream_index;
1739 is->audio_st = ic->streams[stream_index];
1740 is->audio_buf_size = 0;
1741 is->audio_buf_index = 0;
1743 /* init averaging filter */
1744 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1745 is->audio_diff_avg_count = 0;
1746 /* since we do not have a precise anough audio fifo fullness,
1747 we correct audio sync only if larger than this threshold */
1748 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1750 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1751 packet_queue_init(&is->audioq);
1754 case CODEC_TYPE_VIDEO:
1755 is->video_stream = stream_index;
1756 is->video_st = ic->streams[stream_index];
1758 is->frame_last_delay = 40e-3;
1759 is->frame_timer = (double)av_gettime() / 1000000.0;
1760 is->video_current_pts_time = av_gettime();
1762 packet_queue_init(&is->videoq);
1763 is->video_tid = SDL_CreateThread(video_thread, is);
1765 enc-> get_buffer= my_get_buffer;
1766 enc->release_buffer= my_release_buffer;
1768 case CODEC_TYPE_SUBTITLE:
1769 is->subtitle_stream = stream_index;
1770 is->subtitle_st = ic->streams[stream_index];
1771 packet_queue_init(&is->subtitleq);
1773 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
1781 static void stream_component_close(VideoState *is, int stream_index)
1783 AVFormatContext *ic = is->ic;
1784 AVCodecContext *enc;
1786 if (stream_index < 0 || stream_index >= ic->nb_streams)
1788 enc = ic->streams[stream_index]->codec;
1790 switch(enc->codec_type) {
1791 case CODEC_TYPE_AUDIO:
1792 packet_queue_abort(&is->audioq);
1796 packet_queue_end(&is->audioq);
1798 case CODEC_TYPE_VIDEO:
1799 packet_queue_abort(&is->videoq);
1801 /* note: we also signal this mutex to make sure we deblock the
1802 video thread in all cases */
1803 SDL_LockMutex(is->pictq_mutex);
1804 SDL_CondSignal(is->pictq_cond);
1805 SDL_UnlockMutex(is->pictq_mutex);
1807 SDL_WaitThread(is->video_tid, NULL);
1809 packet_queue_end(&is->videoq);
1811 case CODEC_TYPE_SUBTITLE:
1812 packet_queue_abort(&is->subtitleq);
1814 /* note: we also signal this mutex to make sure we deblock the
1815 video thread in all cases */
1816 SDL_LockMutex(is->subpq_mutex);
1817 is->subtitle_stream_changed = 1;
1819 SDL_CondSignal(is->subpq_cond);
1820 SDL_UnlockMutex(is->subpq_mutex);
1822 SDL_WaitThread(is->subtitle_tid, NULL);
1824 packet_queue_end(&is->subtitleq);
1831 switch(enc->codec_type) {
1832 case CODEC_TYPE_AUDIO:
1833 is->audio_st = NULL;
1834 is->audio_stream = -1;
1836 case CODEC_TYPE_VIDEO:
1837 is->video_st = NULL;
1838 is->video_stream = -1;
1840 case CODEC_TYPE_SUBTITLE:
1841 is->subtitle_st = NULL;
1842 is->subtitle_stream = -1;
1849 static void dump_stream_info(const AVFormatContext *s)
1852 fprintf(stderr, "Track: %d\n", s->track);
1853 if (s->title[0] != '\0')
1854 fprintf(stderr, "Title: %s\n", s->title);
1855 if (s->author[0] != '\0')
1856 fprintf(stderr, "Author: %s\n", s->author);
1857 if (s->copyright[0] != '\0')
1858 fprintf(stderr, "Copyright: %s\n", s->copyright);
1859 if (s->comment[0] != '\0')
1860 fprintf(stderr, "Comment: %s\n", s->comment);
1861 if (s->album[0] != '\0')
1862 fprintf(stderr, "Album: %s\n", s->album);
1864 fprintf(stderr, "Year: %d\n", s->year);
1865 if (s->genre[0] != '\0')
1866 fprintf(stderr, "Genre: %s\n", s->genre);
1869 /* since we have only one decoding thread, we can use a global
1870 variable instead of a thread local variable */
1871 static VideoState *global_video_state;
1873 static int decode_interrupt_cb(void)
1875 return (global_video_state && global_video_state->abort_request);
1878 /* this thread gets the stream from the disk or the network */
1879 static int decode_thread(void *arg)
1881 VideoState *is = arg;
1882 AVFormatContext *ic;
1883 int err, i, ret, video_index, audio_index, use_play;
1884 AVPacket pkt1, *pkt = &pkt1;
1885 AVFormatParameters params, *ap = ¶ms;
1889 is->video_stream = -1;
1890 is->audio_stream = -1;
1891 is->subtitle_stream = -1;
1893 global_video_state = is;
1894 url_set_interrupt_cb(decode_interrupt_cb);
1896 memset(ap, 0, sizeof(*ap));
1897 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1900 ap->width = frame_width;
1901 ap->height= frame_height;
1902 ap->time_base= (AVRational){1, 25};
1903 ap->pix_fmt = frame_pix_fmt;
1905 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1907 print_error(is->filename, err);
1912 #ifdef CONFIG_RTSP_DEMUXER
1913 use_play = (ic->iformat == &rtsp_demuxer);
1919 ic->flags |= AVFMT_FLAG_GENPTS;
1922 err = av_find_stream_info(ic);
1924 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1928 ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
1931 /* if seeking requested, we execute it */
1932 if (start_time != AV_NOPTS_VALUE) {
1935 timestamp = start_time;
1936 /* add the stream start time */
1937 if (ic->start_time != AV_NOPTS_VALUE)
1938 timestamp += ic->start_time;
1939 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1941 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1942 is->filename, (double)timestamp / AV_TIME_BASE);
1946 /* now we can begin to play (RTSP stream only) */
1950 err = av_find_stream_info(ic);
1952 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1958 for(i = 0; i < ic->nb_streams; i++) {
1959 AVCodecContext *enc = ic->streams[i]->codec;
1960 switch(enc->codec_type) {
1961 case CODEC_TYPE_AUDIO:
1962 if ((audio_index < 0 || wanted_audio_stream-- > 0) && !audio_disable)
1965 case CODEC_TYPE_VIDEO:
1966 if (video_index < 0 && !video_disable)
1974 dump_format(ic, 0, is->filename, 0);
1975 dump_stream_info(ic);
1978 /* open the streams */
1979 if (audio_index >= 0) {
1980 stream_component_open(is, audio_index);
1983 if (video_index >= 0) {
1984 stream_component_open(is, video_index);
1986 if (!display_disable)
1990 if (is->video_stream < 0 && is->audio_stream < 0) {
1991 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1997 if (is->abort_request)
1999 if (is->paused != is->last_paused) {
2000 is->last_paused = is->paused;
2006 #ifdef CONFIG_RTSP_DEMUXER
2007 if (is->paused && ic->iformat == &rtsp_demuxer) {
2008 /* wait 10 ms to avoid trying to get another packet */
2015 int stream_index= -1;
2016 int64_t seek_target= is->seek_pos;
2018 if (is-> video_stream >= 0) stream_index= is-> video_stream;
2019 else if(is-> audio_stream >= 0) stream_index= is-> audio_stream;
2020 else if(is->subtitle_stream >= 0) stream_index= is->subtitle_stream;
2022 if(stream_index>=0){
2023 seek_target= av_rescale_q(seek_target, AV_TIME_BASE_Q, ic->streams[stream_index]->time_base);
2026 ret = av_seek_frame(is->ic, stream_index, seek_target, is->seek_flags);
2028 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2030 if (is->audio_stream >= 0) {
2031 packet_queue_flush(&is->audioq);
2032 packet_queue_put(&is->audioq, &flush_pkt);
2034 if (is->subtitle_stream >= 0) {
2035 packet_queue_flush(&is->subtitleq);
2036 packet_queue_put(&is->subtitleq, &flush_pkt);
2038 if (is->video_stream >= 0) {
2039 packet_queue_flush(&is->videoq);
2040 packet_queue_put(&is->videoq, &flush_pkt);
2046 /* if the queue are full, no need to read more */
2047 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
2048 is->videoq.size > MAX_VIDEOQ_SIZE ||
2049 is->subtitleq.size > MAX_SUBTITLEQ_SIZE ||
2050 url_feof(&ic->pb)) {
2055 ret = av_read_frame(ic, pkt);
2057 if (url_ferror(&ic->pb) == 0) {
2058 SDL_Delay(100); /* wait for user event */
2063 if (pkt->stream_index == is->audio_stream) {
2064 packet_queue_put(&is->audioq, pkt);
2065 } else if (pkt->stream_index == is->video_stream) {
2066 packet_queue_put(&is->videoq, pkt);
2067 } else if (pkt->stream_index == is->subtitle_stream) {
2068 packet_queue_put(&is->subtitleq, pkt);
2070 av_free_packet(pkt);
2073 /* wait until the end */
2074 while (!is->abort_request) {
2080 /* disable interrupting */
2081 global_video_state = NULL;
2083 /* close each stream */
2084 if (is->audio_stream >= 0)
2085 stream_component_close(is, is->audio_stream);
2086 if (is->video_stream >= 0)
2087 stream_component_close(is, is->video_stream);
2088 if (is->subtitle_stream >= 0)
2089 stream_component_close(is, is->subtitle_stream);
2091 av_close_input_file(is->ic);
2092 is->ic = NULL; /* safety */
2094 url_set_interrupt_cb(NULL);
2099 event.type = FF_QUIT_EVENT;
2100 event.user.data1 = is;
2101 SDL_PushEvent(&event);
2106 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2110 is = av_mallocz(sizeof(VideoState));
2113 av_strlcpy(is->filename, filename, sizeof(is->filename));
2114 is->iformat = iformat;
2118 /* start video display */
2119 is->pictq_mutex = SDL_CreateMutex();
2120 is->pictq_cond = SDL_CreateCond();
2122 is->subpq_mutex = SDL_CreateMutex();
2123 is->subpq_cond = SDL_CreateCond();
2125 /* add the refresh timer to draw the picture */
2126 schedule_refresh(is, 40);
2128 is->av_sync_type = av_sync_type;
2129 is->parse_tid = SDL_CreateThread(decode_thread, is);
2130 if (!is->parse_tid) {
2137 static void stream_close(VideoState *is)
2141 /* XXX: use a special url_shutdown call to abort parse cleanly */
2142 is->abort_request = 1;
2143 SDL_WaitThread(is->parse_tid, NULL);
2145 /* free all pictures */
2146 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
2149 SDL_FreeYUVOverlay(vp->bmp);
2153 SDL_DestroyMutex(is->pictq_mutex);
2154 SDL_DestroyCond(is->pictq_cond);
2155 SDL_DestroyMutex(is->subpq_mutex);
2156 SDL_DestroyCond(is->subpq_cond);
2159 static void stream_cycle_channel(VideoState *is, int codec_type)
2161 AVFormatContext *ic = is->ic;
2162 int start_index, stream_index;
2165 if (codec_type == CODEC_TYPE_VIDEO)
2166 start_index = is->video_stream;
2167 else if (codec_type == CODEC_TYPE_AUDIO)
2168 start_index = is->audio_stream;
2170 start_index = is->subtitle_stream;
2171 if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
2173 stream_index = start_index;
2175 if (++stream_index >= is->ic->nb_streams)
2177 if (codec_type == CODEC_TYPE_SUBTITLE)
2184 if (stream_index == start_index)
2186 st = ic->streams[stream_index];
2187 if (st->codec->codec_type == codec_type) {
2188 /* check that parameters are OK */
2189 switch(codec_type) {
2190 case CODEC_TYPE_AUDIO:
2191 if (st->codec->sample_rate != 0 &&
2192 st->codec->channels != 0)
2195 case CODEC_TYPE_VIDEO:
2196 case CODEC_TYPE_SUBTITLE:
2204 stream_component_close(is, start_index);
2205 stream_component_open(is, stream_index);
2209 static void toggle_full_screen(void)
2211 is_full_screen = !is_full_screen;
2212 if (!fs_screen_width) {
2213 /* use default SDL method */
2214 // SDL_WM_ToggleFullScreen(screen);
2216 video_open(cur_stream);
2219 static void toggle_pause(void)
2222 stream_pause(cur_stream);
2226 static void step_to_next_frame(void)
2229 if (cur_stream->paused)
2230 cur_stream->paused=0;
2231 cur_stream->video_current_pts = get_video_clock(cur_stream);
2236 static void do_exit(void)
2239 stream_close(cur_stream);
2248 static void toggle_audio_display(void)
2251 cur_stream->show_audio = !cur_stream->show_audio;
2255 /* handle an event sent by the GUI */
2256 static void event_loop(void)
2259 double incr, pos, frac;
2262 SDL_WaitEvent(&event);
2263 switch(event.type) {
2265 switch(event.key.keysym.sym) {
2271 toggle_full_screen();
2277 case SDLK_s: //S: Step to next frame
2278 step_to_next_frame();
2282 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
2286 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
2290 stream_cycle_channel(cur_stream, CODEC_TYPE_SUBTITLE);
2293 toggle_audio_display();
2308 if (seek_by_bytes) {
2309 pos = url_ftell(&cur_stream->ic->pb);
2310 if (cur_stream->ic->bit_rate)
2311 incr *= cur_stream->ic->bit_rate / 60.0;
2315 stream_seek(cur_stream, pos, incr);
2317 pos = get_master_clock(cur_stream);
2319 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
2327 case SDL_MOUSEBUTTONDOWN:
2330 int tns, thh, tmm, tss;
2331 tns = cur_stream->ic->duration/1000000LL;
2333 tmm = (tns%3600)/60;
2335 frac = (double)event.button.x/(double)cur_stream->width;
2340 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2341 hh, mm, ss, thh, tmm, tss);
2342 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
2345 case SDL_VIDEORESIZE:
2347 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2348 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2349 screen_width = cur_stream->width = event.resize.w;
2350 screen_height= cur_stream->height= event.resize.h;
2357 case FF_ALLOC_EVENT:
2358 video_open(event.user.data1);
2359 alloc_picture(event.user.data1);
2361 case FF_REFRESH_EVENT:
2362 video_refresh_timer(event.user.data1);
2370 static void opt_frame_size(const char *arg)
2372 if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2373 fprintf(stderr, "Incorrect frame size\n");
2376 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2377 fprintf(stderr, "Frame size must be a multiple of 2\n");
2382 static void opt_width(const char *arg)
2384 screen_width = atoi(arg);
2385 if(screen_width<=0){
2386 fprintf(stderr, "invalid width\n");
2391 static void opt_height(const char *arg)
2393 screen_height = atoi(arg);
2394 if(screen_height<=0){
2395 fprintf(stderr, "invalid height\n");
2400 static void opt_format(const char *arg)
2402 file_iformat = av_find_input_format(arg);
2403 if (!file_iformat) {
2404 fprintf(stderr, "Unknown input format: %s\n", arg);
2409 static void opt_frame_pix_fmt(const char *arg)
2411 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2414 #ifdef CONFIG_RTSP_DEMUXER
2415 static void opt_rtp_tcp(void)
2417 /* only tcp protocol */
2418 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
2422 static void opt_sync(const char *arg)
2424 if (!strcmp(arg, "audio"))
2425 av_sync_type = AV_SYNC_AUDIO_MASTER;
2426 else if (!strcmp(arg, "video"))
2427 av_sync_type = AV_SYNC_VIDEO_MASTER;
2428 else if (!strcmp(arg, "ext"))
2429 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2434 static void opt_seek(const char *arg)
2436 start_time = parse_date(arg, 1);
2439 static void opt_debug(const char *arg)
2445 static void opt_vismv(const char *arg)
2447 debug_mv = atoi(arg);
2450 static void opt_thread_count(const char *arg)
2452 thread_count= atoi(arg);
2453 #if !defined(HAVE_THREADS)
2454 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2458 const OptionDef options[] = {
2459 { "h", 0, {(void*)show_help}, "show help" },
2460 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
2461 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2462 { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2463 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2464 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2465 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2466 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_audio_stream}, "", "" },
2467 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2468 { "bytes", OPT_BOOL, {(void*)&seek_by_bytes}, "seek by bytes" },
2469 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2470 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2471 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2472 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2473 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
2474 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2475 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
2476 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2477 { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2478 { "drp", OPT_BOOL |OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts", ""},
2479 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2480 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2481 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2482 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2483 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
2484 { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_resilience}, "set error detection threshold (0-4)", "threshold" },
2485 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
2486 #ifdef CONFIG_RTSP_DEMUXER
2487 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
2489 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2490 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2494 void show_help(void)
2496 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003-2006 Fabrice Bellard, et al.\n"
2497 "usage: ffplay [options] input_file\n"
2498 "Simple media player\n");
2500 show_help_options(options, "Main options:\n",
2502 show_help_options(options, "\nAdvanced options:\n",
2503 OPT_EXPERT, OPT_EXPERT);
2504 printf("\nWhile playing:\n"
2506 "f toggle full screen\n"
2508 "a cycle audio channel\n"
2509 "v cycle video channel\n"
2510 "t cycle subtitle channel\n"
2511 "w show audio waves\n"
2512 "left/right seek backward/forward 10 seconds\n"
2513 "down/up seek backward/forward 1 minute\n"
2514 "mouse click seek to percentage in file corresponding to fraction of width\n"
2519 void parse_arg_file(const char *filename)
2521 if (!strcmp(filename, "-"))
2523 input_filename = filename;
2526 /* Called from the main */
2527 int main(int argc, char **argv)
2531 /* register all codecs, demux and protocols */
2535 MorphToPM(); // Morph the VIO application to a PM one to be able to use Win* functions
2537 // Make stdout and stderr unbuffered
2538 setbuf( stdout, NULL );
2539 setbuf( stderr, NULL );
2542 parse_options(argc, argv, options);
2544 if (!input_filename)
2547 if (display_disable) {
2550 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2551 #if !defined(__MINGW32__) && !defined(CONFIG_DARWIN)
2552 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 or darwin */
2554 if (SDL_Init (flags)) {
2555 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2559 if (!display_disable) {
2560 #ifdef HAVE_SDL_VIDEO_SIZE
2561 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2562 fs_screen_width = vi->current_w;
2563 fs_screen_height = vi->current_h;
2567 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2568 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
2569 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2570 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2572 av_init_packet(&flush_pkt);
2573 flush_pkt.data= "FLUSH";
2575 cur_stream = stream_open(input_filename, file_iformat);