2 * avplay : Simple Media Player based on the Libav libraries
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/avstring.h"
27 #include "libavutil/colorspace.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/parseutils.h"
33 #include "libavutil/samplefmt.h"
34 #include "libavutil/time.h"
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavresample/avresample.h"
39 #include "libavutil/opt.h"
40 #include "libavcodec/avfft.h"
43 # include "libavfilter/avfilter.h"
44 # include "libavfilter/avfiltergraph.h"
45 # include "libavfilter/buffersink.h"
46 # include "libavfilter/buffersrc.h"
52 #include <SDL_thread.h>
55 #undef main /* We don't want SDL to override our main() */
60 const char program_name[] = "avplay";
61 const int program_birth_year = 2003;
63 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
64 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
67 /* SDL audio buffer size, in samples. Should be small to have precise
68 A/V sync as SDL does not have hardware buffer fullness info. */
69 #define SDL_AUDIO_BUFFER_SIZE 1024
71 /* no AV sync correction is done if below the AV sync threshold */
72 #define AV_SYNC_THRESHOLD 0.01
73 /* no AV correction is done if too big error */
74 #define AV_NOSYNC_THRESHOLD 10.0
76 #define FRAME_SKIP_FACTOR 0.05
78 /* maximum audio speed change to get correct sync */
79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
82 #define AUDIO_DIFF_AVG_NB 20
84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
85 #define SAMPLE_ARRAY_SIZE (2 * 65536)
87 static int64_t sws_flags = SWS_BICUBIC;
89 typedef struct PacketQueue {
90 AVPacketList *first_pkt, *last_pkt;
98 #define VIDEO_PICTURE_QUEUE_SIZE 2
99 #define SUBPICTURE_QUEUE_SIZE 4
101 typedef struct VideoPicture {
102 double pts; // presentation timestamp for this picture
103 double target_clock; // av_gettime() time at which this should be displayed ideally
104 int64_t pos; // byte position in file
106 int width, height; /* source height & width */
109 enum AVPixelFormat pix_fmt;
112 AVFilterBufferRef *picref;
116 typedef struct SubPicture {
117 double pts; /* presentation time stamp for this picture */
122 AV_SYNC_AUDIO_MASTER, /* default choice */
123 AV_SYNC_VIDEO_MASTER,
124 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
127 typedef struct VideoState {
128 SDL_Thread *parse_tid;
129 SDL_Thread *video_tid;
130 SDL_Thread *refresh_tid;
131 AVInputFormat *iformat;
140 int read_pause_return;
146 double external_clock; /* external clock base */
147 int64_t external_clock_time;
150 double audio_diff_cum; /* used for AV difference average computation */
151 double audio_diff_avg_coef;
152 double audio_diff_threshold;
153 int audio_diff_avg_count;
156 int audio_hw_buf_size;
157 uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
160 unsigned int audio_buf_size; /* in bytes */
161 int audio_buf_index; /* in bytes */
162 AVPacket audio_pkt_temp;
164 enum AVSampleFormat sdl_sample_fmt;
165 uint64_t sdl_channel_layout;
168 enum AVSampleFormat resample_sample_fmt;
169 uint64_t resample_channel_layout;
170 int resample_sample_rate;
171 AVAudioResampleContext *avr;
174 int show_audio; /* if true, display audio samples */
175 int16_t sample_array[SAMPLE_ARRAY_SIZE];
176 int sample_array_index;
180 FFTSample *rdft_data;
183 SDL_Thread *subtitle_tid;
185 int subtitle_stream_changed;
186 AVStream *subtitle_st;
187 PacketQueue subtitleq;
188 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
189 int subpq_size, subpq_rindex, subpq_windex;
190 SDL_mutex *subpq_mutex;
191 SDL_cond *subpq_cond;
194 double frame_last_pts;
195 double frame_last_delay;
196 double video_clock; // pts of last decoded frame / predicted pts of next decoded frame
200 double video_current_pts; // current displayed pts (different from video_clock if frame fifos are used)
201 double video_current_pts_drift; // video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
202 int64_t video_current_pos; // current displayed file pos
203 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
204 int pictq_size, pictq_rindex, pictq_windex;
205 SDL_mutex *pictq_mutex;
206 SDL_cond *pictq_cond;
208 struct SwsContext *img_convert_ctx;
211 // QETimer *video_timer;
213 int width, height, xleft, ytop;
215 PtsCorrectionContext pts_ctx;
218 AVFilterContext *in_video_filter; // the first filter in the video chain
219 AVFilterContext *out_video_filter; // the last filter in the video chain
221 FrameBuffer *buffer_pool;
225 float skip_frames_index;
229 /* options specified by the user */
230 static AVInputFormat *file_iformat;
231 static const char *input_filename;
232 static const char *window_title;
233 static int fs_screen_width;
234 static int fs_screen_height;
235 static int screen_width = 0;
236 static int screen_height = 0;
237 static int audio_disable;
238 static int video_disable;
239 static int wanted_stream[AVMEDIA_TYPE_NB] = {
240 [AVMEDIA_TYPE_AUDIO] = -1,
241 [AVMEDIA_TYPE_VIDEO] = -1,
242 [AVMEDIA_TYPE_SUBTITLE] = -1,
244 static int seek_by_bytes = -1;
245 static int display_disable;
246 static int show_status = 1;
247 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
248 static int64_t start_time = AV_NOPTS_VALUE;
249 static int64_t duration = AV_NOPTS_VALUE;
250 static int debug = 0;
251 static int debug_mv = 0;
253 static int workaround_bugs = 1;
255 static int genpts = 0;
256 static int idct = FF_IDCT_AUTO;
257 static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
258 static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
259 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
260 static int error_concealment = 3;
261 static int decoder_reorder_pts = -1;
263 static int exit_on_keydown;
264 static int exit_on_mousedown;
266 static int framedrop = 1;
267 static int infinite_buffer = 0;
269 static int rdftspeed = 20;
271 static char *vfilters = NULL;
274 /* current context */
275 static int is_full_screen;
276 static VideoState *cur_stream;
277 static int64_t audio_callback_time;
279 static AVPacket flush_pkt;
281 #define FF_ALLOC_EVENT (SDL_USEREVENT)
282 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
283 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
285 static SDL_Surface *screen;
287 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
289 /* packet queue handling */
290 static void packet_queue_init(PacketQueue *q)
292 memset(q, 0, sizeof(PacketQueue));
293 q->mutex = SDL_CreateMutex();
294 q->cond = SDL_CreateCond();
295 packet_queue_put(q, &flush_pkt);
298 static void packet_queue_flush(PacketQueue *q)
300 AVPacketList *pkt, *pkt1;
302 SDL_LockMutex(q->mutex);
303 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
305 av_free_packet(&pkt->pkt);
312 SDL_UnlockMutex(q->mutex);
315 static void packet_queue_end(PacketQueue *q)
317 packet_queue_flush(q);
318 SDL_DestroyMutex(q->mutex);
319 SDL_DestroyCond(q->cond);
322 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
326 /* duplicate the packet */
327 if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
330 pkt1 = av_malloc(sizeof(AVPacketList));
337 SDL_LockMutex(q->mutex);
343 q->last_pkt->next = pkt1;
346 q->size += pkt1->pkt.size + sizeof(*pkt1);
347 /* XXX: should duplicate packet data in DV case */
348 SDL_CondSignal(q->cond);
350 SDL_UnlockMutex(q->mutex);
354 static void packet_queue_abort(PacketQueue *q)
356 SDL_LockMutex(q->mutex);
358 q->abort_request = 1;
360 SDL_CondSignal(q->cond);
362 SDL_UnlockMutex(q->mutex);
365 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
366 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
371 SDL_LockMutex(q->mutex);
374 if (q->abort_request) {
381 q->first_pkt = pkt1->next;
385 q->size -= pkt1->pkt.size + sizeof(*pkt1);
394 SDL_CondWait(q->cond, q->mutex);
397 SDL_UnlockMutex(q->mutex);
401 static inline void fill_rectangle(SDL_Surface *screen,
402 int x, int y, int w, int h, int color)
409 SDL_FillRect(screen, &rect, color);
412 #define ALPHA_BLEND(a, oldp, newp, s)\
413 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
415 #define RGBA_IN(r, g, b, a, s)\
417 unsigned int v = ((const uint32_t *)(s))[0];\
418 a = (v >> 24) & 0xff;\
419 r = (v >> 16) & 0xff;\
420 g = (v >> 8) & 0xff;\
424 #define YUVA_IN(y, u, v, a, s, pal)\
426 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
427 a = (val >> 24) & 0xff;\
428 y = (val >> 16) & 0xff;\
429 u = (val >> 8) & 0xff;\
433 #define YUVA_OUT(d, y, u, v, a)\
435 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
441 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
443 int wrap, wrap3, width2, skip2;
444 int y, u, v, a, u1, v1, a1, w, h;
445 uint8_t *lum, *cb, *cr;
448 int dstx, dsty, dstw, dsth;
450 dstw = av_clip(rect->w, 0, imgw);
451 dsth = av_clip(rect->h, 0, imgh);
452 dstx = av_clip(rect->x, 0, imgw - dstw);
453 dsty = av_clip(rect->y, 0, imgh - dsth);
454 lum = dst->data[0] + dsty * dst->linesize[0];
455 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
456 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
458 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
460 wrap = dst->linesize[0];
461 wrap3 = rect->pict.linesize[0];
462 p = rect->pict.data[0];
463 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
471 YUVA_IN(y, u, v, a, p, pal);
472 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
473 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
474 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
480 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
481 YUVA_IN(y, u, v, a, p, pal);
485 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
487 YUVA_IN(y, u, v, a, p + BPP, pal);
491 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
492 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
493 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
500 YUVA_IN(y, u, v, a, p, pal);
501 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
502 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
503 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
507 p += wrap3 - dstw * BPP;
508 lum += wrap - dstw - dstx;
509 cb += dst->linesize[1] - width2 - skip2;
510 cr += dst->linesize[2] - width2 - skip2;
512 for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
518 YUVA_IN(y, u, v, a, p, pal);
522 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
525 YUVA_IN(y, u, v, a, p, pal);
529 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
530 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
531 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
537 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
538 YUVA_IN(y, u, v, a, p, pal);
542 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
544 YUVA_IN(y, u, v, a, p + BPP, pal);
548 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
552 YUVA_IN(y, u, v, a, p, pal);
556 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
558 YUVA_IN(y, u, v, a, p + BPP, pal);
562 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
564 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
565 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
569 p += -wrap3 + 2 * BPP;
573 YUVA_IN(y, u, v, a, p, pal);
577 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
580 YUVA_IN(y, u, v, a, p, pal);
584 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
585 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
586 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
592 p += wrap3 + (wrap3 - dstw * BPP);
593 lum += wrap + (wrap - dstw - dstx);
594 cb += dst->linesize[1] - width2 - skip2;
595 cr += dst->linesize[2] - width2 - skip2;
597 /* handle odd height */
604 YUVA_IN(y, u, v, a, p, pal);
605 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
606 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
607 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
613 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
614 YUVA_IN(y, u, v, a, p, pal);
618 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
620 YUVA_IN(y, u, v, a, p + BPP, pal);
624 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
625 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
626 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
633 YUVA_IN(y, u, v, a, p, pal);
634 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
635 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
636 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
641 static void free_subpicture(SubPicture *sp)
643 avsubtitle_free(&sp->sub);
646 static void video_image_display(VideoState *is)
652 int width, height, x, y;
656 vp = &is->pictq[is->pictq_rindex];
659 if (vp->picref->video->pixel_aspect.num == 0)
662 aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
665 /* XXX: use variable in the frame */
666 if (is->video_st->sample_aspect_ratio.num)
667 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
668 else if (is->video_st->codec->sample_aspect_ratio.num)
669 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
673 if (aspect_ratio <= 0.0)
675 aspect_ratio *= (float)vp->width / (float)vp->height;
679 if (is->subpq_size > 0)
681 sp = &is->subpq[is->subpq_rindex];
683 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
685 SDL_LockYUVOverlay (vp->bmp);
687 pict.data[0] = vp->bmp->pixels[0];
688 pict.data[1] = vp->bmp->pixels[2];
689 pict.data[2] = vp->bmp->pixels[1];
691 pict.linesize[0] = vp->bmp->pitches[0];
692 pict.linesize[1] = vp->bmp->pitches[2];
693 pict.linesize[2] = vp->bmp->pitches[1];
695 for (i = 0; i < sp->sub.num_rects; i++)
696 blend_subrect(&pict, sp->sub.rects[i],
697 vp->bmp->w, vp->bmp->h);
699 SDL_UnlockYUVOverlay (vp->bmp);
705 /* XXX: we suppose the screen has a 1.0 pixel ratio */
707 width = ((int)rint(height * aspect_ratio)) & ~1;
708 if (width > is->width) {
710 height = ((int)rint(width / aspect_ratio)) & ~1;
712 x = (is->width - width) / 2;
713 y = (is->height - height) / 2;
714 is->no_background = 0;
715 rect.x = is->xleft + x;
716 rect.y = is->ytop + y;
719 SDL_DisplayYUVOverlay(vp->bmp, &rect);
723 /* get the current audio output buffer size, in samples. With SDL, we
724 cannot have a precise information */
725 static int audio_write_get_buf_size(VideoState *is)
727 return is->audio_buf_size - is->audio_buf_index;
730 static inline int compute_mod(int a, int b)
739 static void video_audio_display(VideoState *s)
741 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
742 int ch, channels, h, h2, bgcolor, fgcolor;
744 int rdft_bits, nb_freq;
746 for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
748 nb_freq = 1 << (rdft_bits - 1);
750 /* compute display index : center on currently output samples */
751 channels = s->sdl_channels;
752 nb_display_channels = channels;
754 int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
756 delay = audio_write_get_buf_size(s);
759 /* to be more precise, we take into account the time spent since
760 the last buffer computation */
761 if (audio_callback_time) {
762 time_diff = av_gettime() - audio_callback_time;
763 delay -= (time_diff * s->sdl_sample_rate) / 1000000;
766 delay += 2 * data_used;
767 if (delay < data_used)
770 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
771 if (s->show_audio == 1) {
773 for (i = 0; i < 1000; i += channels) {
774 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
775 int a = s->sample_array[idx];
776 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
777 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
778 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
780 if (h < score && (b ^ c) < 0) {
787 s->last_i_start = i_start;
789 i_start = s->last_i_start;
792 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
793 if (s->show_audio == 1) {
794 fill_rectangle(screen,
795 s->xleft, s->ytop, s->width, s->height,
798 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
800 /* total height for one channel */
801 h = s->height / nb_display_channels;
802 /* graph height / 2 */
804 for (ch = 0; ch < nb_display_channels; ch++) {
806 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
807 for (x = 0; x < s->width; x++) {
808 y = (s->sample_array[i] * h2) >> 15;
815 fill_rectangle(screen,
816 s->xleft + x, ys, 1, y,
819 if (i >= SAMPLE_ARRAY_SIZE)
820 i -= SAMPLE_ARRAY_SIZE;
824 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
826 for (ch = 1; ch < nb_display_channels; ch++) {
827 y = s->ytop + ch * h;
828 fill_rectangle(screen,
829 s->xleft, y, s->width, 1,
832 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
834 nb_display_channels= FFMIN(nb_display_channels, 2);
835 if (rdft_bits != s->rdft_bits) {
836 av_rdft_end(s->rdft);
837 av_free(s->rdft_data);
838 s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
839 s->rdft_bits = rdft_bits;
840 s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
844 for (ch = 0; ch < nb_display_channels; ch++) {
845 data[ch] = s->rdft_data + 2 * nb_freq * ch;
847 for (x = 0; x < 2 * nb_freq; x++) {
848 double w = (x-nb_freq) * (1.0 / nb_freq);
849 data[ch][x] = s->sample_array[i] * (1.0 - w * w);
851 if (i >= SAMPLE_ARRAY_SIZE)
852 i -= SAMPLE_ARRAY_SIZE;
854 av_rdft_calc(s->rdft, data[ch]);
856 // least efficient way to do this, we should of course directly access it but its more than fast enough
857 for (y = 0; y < s->height; y++) {
858 double w = 1 / sqrt(nb_freq);
859 int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
860 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
861 + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
864 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
866 fill_rectangle(screen,
867 s->xpos, s->height-y, 1, 1,
871 SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
873 if (s->xpos >= s->width)
878 static int video_open(VideoState *is)
880 int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
883 if (is_full_screen) flags |= SDL_FULLSCREEN;
884 else flags |= SDL_RESIZABLE;
886 if (is_full_screen && fs_screen_width) {
888 h = fs_screen_height;
889 } else if (!is_full_screen && screen_width) {
893 } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
894 w = is->out_video_filter->inputs[0]->w;
895 h = is->out_video_filter->inputs[0]->h;
897 } else if (is->video_st && is->video_st->codec->width) {
898 w = is->video_st->codec->width;
899 h = is->video_st->codec->height;
905 if (screen && is->width == screen->w && screen->w == w
906 && is->height== screen->h && screen->h == h)
909 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
910 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
911 screen = SDL_SetVideoMode(w, h, 24, flags);
913 screen = SDL_SetVideoMode(w, h, 0, flags);
916 fprintf(stderr, "SDL: could not set video mode - exiting\n");
920 window_title = input_filename;
921 SDL_WM_SetCaption(window_title, window_title);
923 is->width = screen->w;
924 is->height = screen->h;
929 /* display the current picture, if any */
930 static void video_display(VideoState *is)
933 video_open(cur_stream);
934 if (is->audio_st && is->show_audio)
935 video_audio_display(is);
936 else if (is->video_st)
937 video_image_display(is);
940 static int refresh_thread(void *opaque)
942 VideoState *is= opaque;
943 while (!is->abort_request) {
945 event.type = FF_REFRESH_EVENT;
946 event.user.data1 = opaque;
949 SDL_PushEvent(&event);
951 av_usleep(is->audio_st && is->show_audio ? rdftspeed * 1000 : 5000); // FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
956 /* get the current audio clock value */
957 static double get_audio_clock(VideoState *is)
960 int hw_buf_size, bytes_per_sec;
961 pts = is->audio_clock;
962 hw_buf_size = audio_write_get_buf_size(is);
965 bytes_per_sec = is->sdl_sample_rate * is->sdl_channels *
966 av_get_bytes_per_sample(is->sdl_sample_fmt);
969 pts -= (double)hw_buf_size / bytes_per_sec;
973 /* get the current video clock value */
974 static double get_video_clock(VideoState *is)
977 return is->video_current_pts;
979 return is->video_current_pts_drift + av_gettime() / 1000000.0;
983 /* get the current external clock value */
984 static double get_external_clock(VideoState *is)
988 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
991 /* get the current master clock value */
992 static double get_master_clock(VideoState *is)
996 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
998 val = get_video_clock(is);
1000 val = get_audio_clock(is);
1001 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1003 val = get_audio_clock(is);
1005 val = get_video_clock(is);
1007 val = get_external_clock(is);
1012 /* seek in the stream */
1013 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1015 if (!is->seek_req) {
1018 is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1020 is->seek_flags |= AVSEEK_FLAG_BYTE;
1025 /* pause or resume the video */
1026 static void stream_pause(VideoState *is)
1029 is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1030 if (is->read_pause_return != AVERROR(ENOSYS)) {
1031 is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1033 is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1035 is->paused = !is->paused;
1038 static double compute_target_time(double frame_current_pts, VideoState *is)
1040 double delay, sync_threshold, diff;
1042 /* compute nominal delay */
1043 delay = frame_current_pts - is->frame_last_pts;
1044 if (delay <= 0 || delay >= 10.0) {
1045 /* if incorrect delay, use previous one */
1046 delay = is->frame_last_delay;
1048 is->frame_last_delay = delay;
1050 is->frame_last_pts = frame_current_pts;
1052 /* update delay to follow master synchronisation source */
1053 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1054 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1055 /* if video is slave, we try to correct big delays by
1056 duplicating or deleting a frame */
1057 diff = get_video_clock(is) - get_master_clock(is);
1059 /* skip or repeat frame. We take into account the
1060 delay to compute the threshold. I still don't know
1061 if it is the best guess */
1062 sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1063 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1064 if (diff <= -sync_threshold)
1066 else if (diff >= sync_threshold)
1070 is->frame_timer += delay;
1072 av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1073 delay, frame_current_pts, -diff);
1075 return is->frame_timer;
1078 /* called to display each frame */
1079 static void video_refresh_timer(void *opaque)
1081 VideoState *is = opaque;
1084 SubPicture *sp, *sp2;
1088 if (is->pictq_size == 0) {
1089 // nothing to do, no picture to display in the que
1091 double time = av_gettime() / 1000000.0;
1093 /* dequeue the picture */
1094 vp = &is->pictq[is->pictq_rindex];
1096 if (time < vp->target_clock)
1098 /* update current video pts */
1099 is->video_current_pts = vp->pts;
1100 is->video_current_pts_drift = is->video_current_pts - time;
1101 is->video_current_pos = vp->pos;
1102 if (is->pictq_size > 1) {
1103 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1104 assert(nextvp->target_clock >= vp->target_clock);
1105 next_target= nextvp->target_clock;
1107 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1109 if (framedrop && time > next_target) {
1110 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1111 if (is->pictq_size > 1 || time > next_target + 0.5) {
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);
1124 if (is->subtitle_st) {
1125 if (is->subtitle_stream_changed) {
1126 SDL_LockMutex(is->subpq_mutex);
1128 while (is->subpq_size) {
1129 free_subpicture(&is->subpq[is->subpq_rindex]);
1131 /* update queue size and signal for next picture */
1132 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1133 is->subpq_rindex = 0;
1137 is->subtitle_stream_changed = 0;
1139 SDL_CondSignal(is->subpq_cond);
1140 SDL_UnlockMutex(is->subpq_mutex);
1142 if (is->subpq_size > 0) {
1143 sp = &is->subpq[is->subpq_rindex];
1145 if (is->subpq_size > 1)
1146 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1150 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1151 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1153 free_subpicture(sp);
1155 /* update queue size and signal for next picture */
1156 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1157 is->subpq_rindex = 0;
1159 SDL_LockMutex(is->subpq_mutex);
1161 SDL_CondSignal(is->subpq_cond);
1162 SDL_UnlockMutex(is->subpq_mutex);
1168 /* display picture */
1169 if (!display_disable)
1172 /* update queue size and signal for next picture */
1173 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1174 is->pictq_rindex = 0;
1176 SDL_LockMutex(is->pictq_mutex);
1178 SDL_CondSignal(is->pictq_cond);
1179 SDL_UnlockMutex(is->pictq_mutex);
1181 } else if (is->audio_st) {
1182 /* draw the next audio frame */
1184 /* if only audio stream, then display the audio bars (better
1185 than nothing, just to test the implementation */
1187 /* display picture */
1188 if (!display_disable)
1192 static int64_t last_time;
1194 int aqsize, vqsize, sqsize;
1197 cur_time = av_gettime();
1198 if (!last_time || (cur_time - last_time) >= 30000) {
1203 aqsize = is->audioq.size;
1205 vqsize = is->videoq.size;
1206 if (is->subtitle_st)
1207 sqsize = is->subtitleq.size;
1209 if (is->audio_st && is->video_st)
1210 av_diff = get_audio_clock(is) - get_video_clock(is);
1211 printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
1212 get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1213 vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1215 last_time = cur_time;
1220 static void stream_close(VideoState *is)
1224 /* XXX: use a special url_shutdown call to abort parse cleanly */
1225 is->abort_request = 1;
1226 SDL_WaitThread(is->parse_tid, NULL);
1227 SDL_WaitThread(is->refresh_tid, NULL);
1229 /* free all pictures */
1230 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1233 avfilter_unref_bufferp(&vp->picref);
1236 SDL_FreeYUVOverlay(vp->bmp);
1240 SDL_DestroyMutex(is->pictq_mutex);
1241 SDL_DestroyCond(is->pictq_cond);
1242 SDL_DestroyMutex(is->subpq_mutex);
1243 SDL_DestroyCond(is->subpq_cond);
1244 #if !CONFIG_AVFILTER
1245 if (is->img_convert_ctx)
1246 sws_freeContext(is->img_convert_ctx);
1251 static void do_exit(void)
1254 stream_close(cur_stream);
1261 avformat_network_deinit();
1265 av_log(NULL, AV_LOG_QUIET, "");
1269 /* allocate a picture (needs to do that in main thread to avoid
1270 potential locking problems */
1271 static void alloc_picture(void *opaque)
1273 VideoState *is = opaque;
1276 vp = &is->pictq[is->pictq_windex];
1279 SDL_FreeYUVOverlay(vp->bmp);
1282 avfilter_unref_bufferp(&vp->picref);
1284 vp->width = is->out_video_filter->inputs[0]->w;
1285 vp->height = is->out_video_filter->inputs[0]->h;
1286 vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1288 vp->width = is->video_st->codec->width;
1289 vp->height = is->video_st->codec->height;
1290 vp->pix_fmt = is->video_st->codec->pix_fmt;
1293 vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1296 if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1297 /* SDL allocates a buffer smaller than requested if the video
1298 * overlay hardware is unable to support the requested size. */
1299 fprintf(stderr, "Error: the video system does not support an image\n"
1300 "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1301 "to reduce the image size.\n", vp->width, vp->height );
1305 SDL_LockMutex(is->pictq_mutex);
1307 SDL_CondSignal(is->pictq_cond);
1308 SDL_UnlockMutex(is->pictq_mutex);
1311 /* The 'pts' parameter is the dts of the packet / pts of the frame and
1312 * guessed if not known. */
1313 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1319 int dst_pix_fmt = AV_PIX_FMT_YUV420P;
1321 /* wait until we have space to put a new picture */
1322 SDL_LockMutex(is->pictq_mutex);
1324 if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1325 is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1327 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1328 !is->videoq.abort_request) {
1329 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1331 SDL_UnlockMutex(is->pictq_mutex);
1333 if (is->videoq.abort_request)
1336 vp = &is->pictq[is->pictq_windex];
1338 /* alloc or resize hardware picture buffer */
1339 if (!vp->bmp || vp->reallocate ||
1341 vp->width != is->out_video_filter->inputs[0]->w ||
1342 vp->height != is->out_video_filter->inputs[0]->h) {
1344 vp->width != is->video_st->codec->width ||
1345 vp->height != is->video_st->codec->height) {
1352 /* the allocation must be done in the main thread to avoid
1354 event.type = FF_ALLOC_EVENT;
1355 event.user.data1 = is;
1356 SDL_PushEvent(&event);
1358 /* wait until the picture is allocated */
1359 SDL_LockMutex(is->pictq_mutex);
1360 while (!vp->allocated && !is->videoq.abort_request) {
1361 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1363 SDL_UnlockMutex(is->pictq_mutex);
1365 if (is->videoq.abort_request)
1369 /* if the frame is not skipped, then display it */
1371 AVPicture pict = { { 0 } };
1373 avfilter_unref_bufferp(&vp->picref);
1374 vp->picref = src_frame->opaque;
1377 /* get a pointer on the bitmap */
1378 SDL_LockYUVOverlay (vp->bmp);
1380 pict.data[0] = vp->bmp->pixels[0];
1381 pict.data[1] = vp->bmp->pixels[2];
1382 pict.data[2] = vp->bmp->pixels[1];
1384 pict.linesize[0] = vp->bmp->pitches[0];
1385 pict.linesize[1] = vp->bmp->pitches[2];
1386 pict.linesize[2] = vp->bmp->pitches[1];
1389 pict_src.data[0] = src_frame->data[0];
1390 pict_src.data[1] = src_frame->data[1];
1391 pict_src.data[2] = src_frame->data[2];
1393 pict_src.linesize[0] = src_frame->linesize[0];
1394 pict_src.linesize[1] = src_frame->linesize[1];
1395 pict_src.linesize[2] = src_frame->linesize[2];
1397 // FIXME use direct rendering
1398 av_picture_copy(&pict, &pict_src,
1399 vp->pix_fmt, vp->width, vp->height);
1401 av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1402 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1403 vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1404 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1405 if (is->img_convert_ctx == NULL) {
1406 fprintf(stderr, "Cannot initialize the conversion context\n");
1409 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1410 0, vp->height, pict.data, pict.linesize);
1412 /* update the bitmap content */
1413 SDL_UnlockYUVOverlay(vp->bmp);
1418 /* now we can update the picture count */
1419 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1420 is->pictq_windex = 0;
1421 SDL_LockMutex(is->pictq_mutex);
1422 vp->target_clock = compute_target_time(vp->pts, is);
1425 SDL_UnlockMutex(is->pictq_mutex);
1430 /* Compute the exact PTS for the picture if it is omitted in the stream.
1431 * The 'pts1' parameter is the dts of the packet / pts of the frame. */
1432 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1434 double frame_delay, pts;
1439 /* update video clock with pts, if present */
1440 is->video_clock = pts;
1442 pts = is->video_clock;
1444 /* update video clock for next frame */
1445 frame_delay = av_q2d(is->video_st->codec->time_base);
1446 /* for MPEG2, the frame can be repeated, so we update the
1447 clock accordingly */
1448 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1449 is->video_clock += frame_delay;
1451 return queue_picture(is, src_frame, pts, pos);
1454 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1458 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1461 if (pkt->data == flush_pkt.data) {
1462 avcodec_flush_buffers(is->video_st->codec);
1464 SDL_LockMutex(is->pictq_mutex);
1465 // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1466 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1467 is->pictq[i].target_clock= 0;
1469 while (is->pictq_size && !is->videoq.abort_request) {
1470 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1472 is->video_current_pos = -1;
1473 SDL_UnlockMutex(is->pictq_mutex);
1475 init_pts_correction(&is->pts_ctx);
1476 is->frame_last_pts = AV_NOPTS_VALUE;
1477 is->frame_last_delay = 0;
1478 is->frame_timer = (double)av_gettime() / 1000000.0;
1479 is->skip_frames = 1;
1480 is->skip_frames_index = 0;
1484 avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1487 if (decoder_reorder_pts == -1) {
1488 *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1489 } else if (decoder_reorder_pts) {
1490 *pts = frame->pkt_pts;
1492 *pts = frame->pkt_dts;
1495 if (*pts == AV_NOPTS_VALUE) {
1499 is->skip_frames_index += 1;
1500 if (is->skip_frames_index >= is->skip_frames) {
1501 is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1510 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1512 char sws_flags_str[128];
1513 char buffersrc_args[256];
1515 AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1516 AVCodecContext *codec = is->video_st->codec;
1518 snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1519 graph->scale_sws_opts = av_strdup(sws_flags_str);
1521 snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1522 codec->width, codec->height, codec->pix_fmt,
1523 is->video_st->time_base.num, is->video_st->time_base.den,
1524 codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1527 if ((ret = avfilter_graph_create_filter(&filt_src,
1528 avfilter_get_by_name("buffer"),
1529 "src", buffersrc_args, NULL,
1532 if ((ret = avfilter_graph_create_filter(&filt_out,
1533 avfilter_get_by_name("buffersink"),
1534 "out", NULL, NULL, graph)) < 0)
1537 if ((ret = avfilter_graph_create_filter(&filt_format,
1538 avfilter_get_by_name("format"),
1539 "format", "yuv420p", NULL, graph)) < 0)
1541 if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1546 AVFilterInOut *outputs = avfilter_inout_alloc();
1547 AVFilterInOut *inputs = avfilter_inout_alloc();
1549 outputs->name = av_strdup("in");
1550 outputs->filter_ctx = filt_src;
1551 outputs->pad_idx = 0;
1552 outputs->next = NULL;
1554 inputs->name = av_strdup("out");
1555 inputs->filter_ctx = filt_format;
1556 inputs->pad_idx = 0;
1557 inputs->next = NULL;
1559 if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1562 if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1566 if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1569 is->in_video_filter = filt_src;
1570 is->out_video_filter = filt_out;
1572 if (codec->codec->capabilities & CODEC_CAP_DR1) {
1574 codec->get_buffer = codec_get_buffer;
1575 codec->release_buffer = codec_release_buffer;
1576 codec->opaque = &is->buffer_pool;
1582 #endif /* CONFIG_AVFILTER */
1584 static int video_thread(void *arg)
1586 AVPacket pkt = { 0 };
1587 VideoState *is = arg;
1588 AVFrame *frame = avcodec_alloc_frame();
1594 AVFilterGraph *graph = avfilter_graph_alloc();
1595 AVFilterContext *filt_out = NULL, *filt_in = NULL;
1597 int last_w = is->video_st->codec->width;
1598 int last_h = is->video_st->codec->height;
1600 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1602 filt_in = is->in_video_filter;
1603 filt_out = is->out_video_filter;
1608 AVFilterBufferRef *picref;
1611 while (is->paused && !is->videoq.abort_request)
1614 av_free_packet(&pkt);
1616 ret = get_video_frame(is, frame, &pts_int, &pkt);
1624 if ( last_w != is->video_st->codec->width
1625 || last_h != is->video_st->codec->height) {
1626 av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1627 is->video_st->codec->width, is->video_st->codec->height);
1628 avfilter_graph_free(&graph);
1629 graph = avfilter_graph_alloc();
1630 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1632 filt_in = is->in_video_filter;
1633 filt_out = is->out_video_filter;
1634 last_w = is->video_st->codec->width;
1635 last_h = is->video_st->codec->height;
1638 frame->pts = pts_int;
1640 FrameBuffer *buf = frame->opaque;
1641 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1642 frame->data, frame->linesize,
1643 AV_PERM_READ | AV_PERM_PRESERVE,
1644 frame->width, frame->height,
1647 avfilter_copy_frame_props(fb, frame);
1648 fb->buf->priv = buf;
1649 fb->buf->free = filter_release_buffer;
1652 av_buffersrc_buffer(filt_in, fb);
1655 av_buffersrc_write_frame(filt_in, frame);
1658 ret = av_buffersink_read(filt_out, &picref);
1664 avfilter_copy_buf_props(frame, picref);
1666 pts_int = picref->pts;
1667 tb = filt_out->inputs[0]->time_base;
1669 frame->opaque = picref;
1671 if (av_cmp_q(tb, is->video_st->time_base)) {
1672 av_unused int64_t pts1 = pts_int;
1673 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1674 av_dlog(NULL, "video_thread(): "
1675 "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1676 tb.num, tb.den, pts1,
1677 is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1679 pts = pts_int * av_q2d(is->video_st->time_base);
1680 ret = output_picture2(is, frame, pts, pos);
1683 pts = pts_int * av_q2d(is->video_st->time_base);
1684 ret = output_picture2(is, frame, pts, pkt.pos);
1692 stream_pause(cur_stream);
1696 av_freep(&vfilters);
1697 avfilter_graph_free(&graph);
1699 av_free_packet(&pkt);
1700 avcodec_free_frame(&frame);
1704 static int subtitle_thread(void *arg)
1706 VideoState *is = arg;
1708 AVPacket pkt1, *pkt = &pkt1;
1712 int r, g, b, y, u, v, a;
1715 while (is->paused && !is->subtitleq.abort_request) {
1718 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1721 if (pkt->data == flush_pkt.data) {
1722 avcodec_flush_buffers(is->subtitle_st->codec);
1725 SDL_LockMutex(is->subpq_mutex);
1726 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1727 !is->subtitleq.abort_request) {
1728 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1730 SDL_UnlockMutex(is->subpq_mutex);
1732 if (is->subtitleq.abort_request)
1735 sp = &is->subpq[is->subpq_windex];
1737 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1738 this packet, if any */
1740 if (pkt->pts != AV_NOPTS_VALUE)
1741 pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1743 avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1744 &got_subtitle, pkt);
1746 if (got_subtitle && sp->sub.format == 0) {
1749 for (i = 0; i < sp->sub.num_rects; i++)
1751 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1753 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1754 y = RGB_TO_Y_CCIR(r, g, b);
1755 u = RGB_TO_U_CCIR(r, g, b, 0);
1756 v = RGB_TO_V_CCIR(r, g, b, 0);
1757 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1761 /* now we can update the picture count */
1762 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1763 is->subpq_windex = 0;
1764 SDL_LockMutex(is->subpq_mutex);
1766 SDL_UnlockMutex(is->subpq_mutex);
1768 av_free_packet(pkt);
1773 /* copy samples for viewing in editor window */
1774 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1778 size = samples_size / sizeof(short);
1780 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1783 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1785 is->sample_array_index += len;
1786 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1787 is->sample_array_index = 0;
1792 /* return the new audio buffer size (samples can be added or deleted
1793 to get better sync if video or external master clock) */
1794 static int synchronize_audio(VideoState *is, short *samples,
1795 int samples_size1, double pts)
1797 int n, samples_size;
1800 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1801 samples_size = samples_size1;
1803 /* if not master, then we try to remove or add samples to correct the clock */
1804 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1805 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1806 double diff, avg_diff;
1807 int wanted_size, min_size, max_size, nb_samples;
1809 ref_clock = get_master_clock(is);
1810 diff = get_audio_clock(is) - ref_clock;
1812 if (diff < AV_NOSYNC_THRESHOLD) {
1813 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1814 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1815 /* not enough measures to have a correct estimate */
1816 is->audio_diff_avg_count++;
1818 /* estimate the A-V difference */
1819 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1821 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1822 wanted_size = samples_size + ((int)(diff * is->sdl_sample_rate) * n);
1823 nb_samples = samples_size / n;
1825 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1826 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1827 if (wanted_size < min_size)
1828 wanted_size = min_size;
1829 else if (wanted_size > max_size)
1830 wanted_size = max_size;
1832 /* add or remove samples to correction the synchro */
1833 if (wanted_size < samples_size) {
1834 /* remove samples */
1835 samples_size = wanted_size;
1836 } else if (wanted_size > samples_size) {
1837 uint8_t *samples_end, *q;
1841 nb = (samples_size - wanted_size);
1842 samples_end = (uint8_t *)samples + samples_size - n;
1843 q = samples_end + n;
1845 memcpy(q, samples_end, n);
1849 samples_size = wanted_size;
1852 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1853 diff, avg_diff, samples_size - samples_size1,
1854 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1857 /* too big difference : may be initial PTS errors, so
1859 is->audio_diff_avg_count = 0;
1860 is->audio_diff_cum = 0;
1864 return samples_size;
1867 /* decode one audio frame and returns its uncompressed size */
1868 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1870 AVPacket *pkt_temp = &is->audio_pkt_temp;
1871 AVPacket *pkt = &is->audio_pkt;
1872 AVCodecContext *dec = is->audio_st->codec;
1873 int n, len1, data_size, got_frame;
1876 int flush_complete = 0;
1879 /* NOTE: the audio packet can contain several frames */
1880 while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1881 int resample_changed, audio_resample;
1884 if (!(is->frame = avcodec_alloc_frame()))
1885 return AVERROR(ENOMEM);
1887 avcodec_get_frame_defaults(is->frame);
1892 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1894 /* if error, we skip the frame */
1899 pkt_temp->data += len1;
1900 pkt_temp->size -= len1;
1903 /* stop sending empty packets if the decoder is finished */
1904 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1908 data_size = av_samples_get_buffer_size(NULL, dec->channels,
1909 is->frame->nb_samples,
1910 is->frame->format, 1);
1912 audio_resample = is->frame->format != is->sdl_sample_fmt ||
1913 is->frame->channel_layout != is->sdl_channel_layout ||
1914 is->frame->sample_rate != is->sdl_sample_rate;
1916 resample_changed = is->frame->format != is->resample_sample_fmt ||
1917 is->frame->channel_layout != is->resample_channel_layout ||
1918 is->frame->sample_rate != is->resample_sample_rate;
1920 if ((!is->avr && audio_resample) || resample_changed) {
1923 avresample_close(is->avr);
1924 else if (audio_resample) {
1925 is->avr = avresample_alloc_context();
1927 fprintf(stderr, "error allocating AVAudioResampleContext\n");
1931 if (audio_resample) {
1932 av_opt_set_int(is->avr, "in_channel_layout", is->frame->channel_layout, 0);
1933 av_opt_set_int(is->avr, "in_sample_fmt", is->frame->format, 0);
1934 av_opt_set_int(is->avr, "in_sample_rate", is->frame->sample_rate, 0);
1935 av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout, 0);
1936 av_opt_set_int(is->avr, "out_sample_fmt", is->sdl_sample_fmt, 0);
1937 av_opt_set_int(is->avr, "out_sample_rate", is->sdl_sample_rate, 0);
1939 if ((ret = avresample_open(is->avr)) < 0) {
1940 fprintf(stderr, "error initializing libavresample\n");
1944 is->resample_sample_fmt = is->frame->format;
1945 is->resample_channel_layout = is->frame->channel_layout;
1946 is->resample_sample_rate = is->frame->sample_rate;
1949 if (audio_resample) {
1951 int out_samples, out_size, out_linesize;
1952 int osize = av_get_bytes_per_sample(is->sdl_sample_fmt);
1953 int nb_samples = is->frame->nb_samples;
1955 out_size = av_samples_get_buffer_size(&out_linesize,
1958 is->sdl_sample_fmt, 0);
1959 tmp_out = av_realloc(is->audio_buf1, out_size);
1961 return AVERROR(ENOMEM);
1962 is->audio_buf1 = tmp_out;
1964 out_samples = avresample_convert(is->avr,
1966 out_linesize, nb_samples,
1968 is->frame->linesize[0],
1969 is->frame->nb_samples);
1970 if (out_samples < 0) {
1971 fprintf(stderr, "avresample_convert() failed\n");
1974 is->audio_buf = is->audio_buf1;
1975 data_size = out_samples * osize * is->sdl_channels;
1977 is->audio_buf = is->frame->data[0];
1980 /* if no pts, then compute it */
1981 pts = is->audio_clock;
1983 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1984 is->audio_clock += (double)data_size /
1985 (double)(n * is->sdl_sample_rate);
1988 static double last_clock;
1989 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1990 is->audio_clock - last_clock,
1991 is->audio_clock, pts);
1992 last_clock = is->audio_clock;
1998 /* free the current packet */
2000 av_free_packet(pkt);
2001 memset(pkt_temp, 0, sizeof(*pkt_temp));
2003 if (is->paused || is->audioq.abort_request) {
2007 /* read next packet */
2008 if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2011 if (pkt->data == flush_pkt.data) {
2012 avcodec_flush_buffers(dec);
2018 /* if update the audio clock with the pts */
2019 if (pkt->pts != AV_NOPTS_VALUE) {
2020 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2025 /* prepare a new audio buffer */
2026 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2028 VideoState *is = opaque;
2029 int audio_size, len1;
2032 audio_callback_time = av_gettime();
2035 if (is->audio_buf_index >= is->audio_buf_size) {
2036 audio_size = audio_decode_frame(is, &pts);
2037 if (audio_size < 0) {
2038 /* if error, just output silence */
2039 is->audio_buf = is->silence_buf;
2040 is->audio_buf_size = sizeof(is->silence_buf);
2043 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2044 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2046 is->audio_buf_size = audio_size;
2048 is->audio_buf_index = 0;
2050 len1 = is->audio_buf_size - is->audio_buf_index;
2053 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2056 is->audio_buf_index += len1;
2060 /* open a given stream. Return 0 if OK */
2061 static int stream_component_open(VideoState *is, int stream_index)
2063 AVFormatContext *ic = is->ic;
2064 AVCodecContext *avctx;
2066 SDL_AudioSpec wanted_spec, spec;
2068 AVDictionaryEntry *t = NULL;
2070 if (stream_index < 0 || stream_index >= ic->nb_streams)
2072 avctx = ic->streams[stream_index]->codec;
2074 opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2076 codec = avcodec_find_decoder(avctx->codec_id);
2077 avctx->debug_mv = debug_mv;
2078 avctx->debug = debug;
2079 avctx->workaround_bugs = workaround_bugs;
2080 avctx->idct_algo = idct;
2081 avctx->skip_frame = skip_frame;
2082 avctx->skip_idct = skip_idct;
2083 avctx->skip_loop_filter = skip_loop_filter;
2084 avctx->error_concealment = error_concealment;
2086 if (fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2088 if (!av_dict_get(opts, "threads", NULL, 0))
2089 av_dict_set(&opts, "threads", "auto", 0);
2091 avcodec_open2(avctx, codec, &opts) < 0)
2093 if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2094 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2095 return AVERROR_OPTION_NOT_FOUND;
2098 /* prepare audio output */
2099 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2100 is->sdl_sample_rate = avctx->sample_rate;
2102 if (!avctx->channel_layout)
2103 avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2104 if (!avctx->channel_layout) {
2105 fprintf(stderr, "unable to guess channel layout\n");
2108 if (avctx->channels == 1)
2109 is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2111 is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2112 is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2114 wanted_spec.format = AUDIO_S16SYS;
2115 wanted_spec.freq = is->sdl_sample_rate;
2116 wanted_spec.channels = is->sdl_channels;
2117 wanted_spec.silence = 0;
2118 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2119 wanted_spec.callback = sdl_audio_callback;
2120 wanted_spec.userdata = is;
2121 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2122 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2125 is->audio_hw_buf_size = spec.size;
2126 is->sdl_sample_fmt = AV_SAMPLE_FMT_S16;
2127 is->resample_sample_fmt = is->sdl_sample_fmt;
2128 is->resample_channel_layout = avctx->channel_layout;
2129 is->resample_sample_rate = avctx->sample_rate;
2132 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2133 switch (avctx->codec_type) {
2134 case AVMEDIA_TYPE_AUDIO:
2135 is->audio_stream = stream_index;
2136 is->audio_st = ic->streams[stream_index];
2137 is->audio_buf_size = 0;
2138 is->audio_buf_index = 0;
2140 /* init averaging filter */
2141 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2142 is->audio_diff_avg_count = 0;
2143 /* since we do not have a precise anough audio fifo fullness,
2144 we correct audio sync only if larger than this threshold */
2145 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2147 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2148 packet_queue_init(&is->audioq);
2151 case AVMEDIA_TYPE_VIDEO:
2152 is->video_stream = stream_index;
2153 is->video_st = ic->streams[stream_index];
2155 packet_queue_init(&is->videoq);
2156 is->video_tid = SDL_CreateThread(video_thread, is);
2158 case AVMEDIA_TYPE_SUBTITLE:
2159 is->subtitle_stream = stream_index;
2160 is->subtitle_st = ic->streams[stream_index];
2161 packet_queue_init(&is->subtitleq);
2163 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2171 static void stream_component_close(VideoState *is, int stream_index)
2173 AVFormatContext *ic = is->ic;
2174 AVCodecContext *avctx;
2176 if (stream_index < 0 || stream_index >= ic->nb_streams)
2178 avctx = ic->streams[stream_index]->codec;
2180 switch (avctx->codec_type) {
2181 case AVMEDIA_TYPE_AUDIO:
2182 packet_queue_abort(&is->audioq);
2186 packet_queue_end(&is->audioq);
2187 av_free_packet(&is->audio_pkt);
2189 avresample_free(&is->avr);
2190 av_freep(&is->audio_buf1);
2191 is->audio_buf = NULL;
2192 avcodec_free_frame(&is->frame);
2195 av_rdft_end(is->rdft);
2196 av_freep(&is->rdft_data);
2201 case AVMEDIA_TYPE_VIDEO:
2202 packet_queue_abort(&is->videoq);
2204 /* note: we also signal this mutex to make sure we deblock the
2205 video thread in all cases */
2206 SDL_LockMutex(is->pictq_mutex);
2207 SDL_CondSignal(is->pictq_cond);
2208 SDL_UnlockMutex(is->pictq_mutex);
2210 SDL_WaitThread(is->video_tid, NULL);
2212 packet_queue_end(&is->videoq);
2214 case AVMEDIA_TYPE_SUBTITLE:
2215 packet_queue_abort(&is->subtitleq);
2217 /* note: we also signal this mutex to make sure we deblock the
2218 video thread in all cases */
2219 SDL_LockMutex(is->subpq_mutex);
2220 is->subtitle_stream_changed = 1;
2222 SDL_CondSignal(is->subpq_cond);
2223 SDL_UnlockMutex(is->subpq_mutex);
2225 SDL_WaitThread(is->subtitle_tid, NULL);
2227 packet_queue_end(&is->subtitleq);
2233 ic->streams[stream_index]->discard = AVDISCARD_ALL;
2234 avcodec_close(avctx);
2236 free_buffer_pool(&is->buffer_pool);
2238 switch (avctx->codec_type) {
2239 case AVMEDIA_TYPE_AUDIO:
2240 is->audio_st = NULL;
2241 is->audio_stream = -1;
2243 case AVMEDIA_TYPE_VIDEO:
2244 is->video_st = NULL;
2245 is->video_stream = -1;
2247 case AVMEDIA_TYPE_SUBTITLE:
2248 is->subtitle_st = NULL;
2249 is->subtitle_stream = -1;
2256 /* since we have only one decoding thread, we can use a global
2257 variable instead of a thread local variable */
2258 static VideoState *global_video_state;
2260 static int decode_interrupt_cb(void *ctx)
2262 return global_video_state && global_video_state->abort_request;
2265 /* this thread gets the stream from the disk or the network */
2266 static int decode_thread(void *arg)
2268 VideoState *is = arg;
2269 AVFormatContext *ic = NULL;
2271 int st_index[AVMEDIA_TYPE_NB];
2272 AVPacket pkt1, *pkt = &pkt1;
2274 int pkt_in_play_range = 0;
2275 AVDictionaryEntry *t;
2276 AVDictionary **opts;
2277 int orig_nb_streams;
2279 memset(st_index, -1, sizeof(st_index));
2280 is->video_stream = -1;
2281 is->audio_stream = -1;
2282 is->subtitle_stream = -1;
2284 global_video_state = is;
2286 ic = avformat_alloc_context();
2287 ic->interrupt_callback.callback = decode_interrupt_cb;
2288 err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2290 print_error(is->filename, err);
2294 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2295 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2296 ret = AVERROR_OPTION_NOT_FOUND;
2302 ic->flags |= AVFMT_FLAG_GENPTS;
2304 opts = setup_find_stream_info_opts(ic, codec_opts);
2305 orig_nb_streams = ic->nb_streams;
2307 err = avformat_find_stream_info(ic, opts);
2309 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2313 for (i = 0; i < orig_nb_streams; i++)
2314 av_dict_free(&opts[i]);
2318 ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2320 if (seek_by_bytes < 0)
2321 seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2323 /* if seeking requested, we execute it */
2324 if (start_time != AV_NOPTS_VALUE) {
2327 timestamp = start_time;
2328 /* add the stream start time */
2329 if (ic->start_time != AV_NOPTS_VALUE)
2330 timestamp += ic->start_time;
2331 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2333 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2334 is->filename, (double)timestamp / AV_TIME_BASE);
2338 for (i = 0; i < ic->nb_streams; i++)
2339 ic->streams[i]->discard = AVDISCARD_ALL;
2341 st_index[AVMEDIA_TYPE_VIDEO] =
2342 av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2343 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2345 st_index[AVMEDIA_TYPE_AUDIO] =
2346 av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2347 wanted_stream[AVMEDIA_TYPE_AUDIO],
2348 st_index[AVMEDIA_TYPE_VIDEO],
2351 st_index[AVMEDIA_TYPE_SUBTITLE] =
2352 av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2353 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2354 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2355 st_index[AVMEDIA_TYPE_AUDIO] :
2356 st_index[AVMEDIA_TYPE_VIDEO]),
2359 av_dump_format(ic, 0, is->filename, 0);
2362 /* open the streams */
2363 if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2364 stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2368 if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2369 ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2371 is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2373 if (!display_disable)
2377 if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2378 stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2381 if (is->video_stream < 0 && is->audio_stream < 0) {
2382 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2388 if (is->abort_request)
2390 if (is->paused != is->last_paused) {
2391 is->last_paused = is->paused;
2393 is->read_pause_return = av_read_pause(ic);
2397 #if CONFIG_RTSP_DEMUXER
2398 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2399 /* wait 10 ms to avoid trying to get another packet */
2406 int64_t seek_target = is->seek_pos;
2407 int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2408 int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2409 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2410 // of the seek_pos/seek_rel variables
2412 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2414 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2416 if (is->audio_stream >= 0) {
2417 packet_queue_flush(&is->audioq);
2418 packet_queue_put(&is->audioq, &flush_pkt);
2420 if (is->subtitle_stream >= 0) {
2421 packet_queue_flush(&is->subtitleq);
2422 packet_queue_put(&is->subtitleq, &flush_pkt);
2424 if (is->video_stream >= 0) {
2425 packet_queue_flush(&is->videoq);
2426 packet_queue_put(&is->videoq, &flush_pkt);
2433 /* if the queue are full, no need to read more */
2434 if (!infinite_buffer &&
2435 (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2436 || ( (is->audioq .size > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2437 && (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0)
2438 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2444 if (is->video_stream >= 0) {
2445 av_init_packet(pkt);
2448 pkt->stream_index = is->video_stream;
2449 packet_queue_put(&is->videoq, pkt);
2451 if (is->audio_stream >= 0 &&
2452 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2453 av_init_packet(pkt);
2456 pkt->stream_index = is->audio_stream;
2457 packet_queue_put(&is->audioq, pkt);
2460 if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2461 if (loop != 1 && (!loop || --loop)) {
2462 stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2463 } else if (autoexit) {
2470 ret = av_read_frame(ic, pkt);
2472 if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2474 if (ic->pb && ic->pb->error)
2476 SDL_Delay(100); /* wait for user event */
2479 /* check if packet is in play range specified by user, then queue, otherwise discard */
2480 pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2481 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2482 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2483 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2484 <= ((double)duration / 1000000);
2485 if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2486 packet_queue_put(&is->audioq, pkt);
2487 } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2488 packet_queue_put(&is->videoq, pkt);
2489 } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2490 packet_queue_put(&is->subtitleq, pkt);
2492 av_free_packet(pkt);
2495 /* wait until the end */
2496 while (!is->abort_request) {
2502 /* disable interrupting */
2503 global_video_state = NULL;
2505 /* close each stream */
2506 if (is->audio_stream >= 0)
2507 stream_component_close(is, is->audio_stream);
2508 if (is->video_stream >= 0)
2509 stream_component_close(is, is->video_stream);
2510 if (is->subtitle_stream >= 0)
2511 stream_component_close(is, is->subtitle_stream);
2513 avformat_close_input(&is->ic);
2519 event.type = FF_QUIT_EVENT;
2520 event.user.data1 = is;
2521 SDL_PushEvent(&event);
2526 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2530 is = av_mallocz(sizeof(VideoState));
2533 av_strlcpy(is->filename, filename, sizeof(is->filename));
2534 is->iformat = iformat;
2538 /* start video display */
2539 is->pictq_mutex = SDL_CreateMutex();
2540 is->pictq_cond = SDL_CreateCond();
2542 is->subpq_mutex = SDL_CreateMutex();
2543 is->subpq_cond = SDL_CreateCond();
2545 is->av_sync_type = av_sync_type;
2546 is->parse_tid = SDL_CreateThread(decode_thread, is);
2547 if (!is->parse_tid) {
2554 static void stream_cycle_channel(VideoState *is, int codec_type)
2556 AVFormatContext *ic = is->ic;
2557 int start_index, stream_index;
2560 if (codec_type == AVMEDIA_TYPE_VIDEO)
2561 start_index = is->video_stream;
2562 else if (codec_type == AVMEDIA_TYPE_AUDIO)
2563 start_index = is->audio_stream;
2565 start_index = is->subtitle_stream;
2566 if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2568 stream_index = start_index;
2570 if (++stream_index >= is->ic->nb_streams)
2572 if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2579 if (stream_index == start_index)
2581 st = ic->streams[stream_index];
2582 if (st->codec->codec_type == codec_type) {
2583 /* check that parameters are OK */
2584 switch (codec_type) {
2585 case AVMEDIA_TYPE_AUDIO:
2586 if (st->codec->sample_rate != 0 &&
2587 st->codec->channels != 0)
2590 case AVMEDIA_TYPE_VIDEO:
2591 case AVMEDIA_TYPE_SUBTITLE:
2599 stream_component_close(is, start_index);
2600 stream_component_open(is, stream_index);
2604 static void toggle_full_screen(void)
2606 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2607 /* OS X needs to empty the picture_queue */
2609 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2610 cur_stream->pictq[i].reallocate = 1;
2612 is_full_screen = !is_full_screen;
2613 video_open(cur_stream);
2616 static void toggle_pause(void)
2619 stream_pause(cur_stream);
2623 static void step_to_next_frame(void)
2626 /* if the stream is paused unpause it, then step */
2627 if (cur_stream->paused)
2628 stream_pause(cur_stream);
2633 static void toggle_audio_display(void)
2636 int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2637 cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2638 fill_rectangle(screen,
2639 cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2641 SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2645 /* handle an event sent by the GUI */
2646 static void event_loop(void)
2649 double incr, pos, frac;
2653 SDL_WaitEvent(&event);
2654 switch (event.type) {
2656 if (exit_on_keydown) {
2660 switch (event.key.keysym.sym) {
2666 toggle_full_screen();
2672 case SDLK_s: // S: Step to next frame
2673 step_to_next_frame();
2677 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2681 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2685 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2688 toggle_audio_display();
2703 if (seek_by_bytes) {
2704 if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2705 pos = cur_stream->video_current_pos;
2706 } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2707 pos = cur_stream->audio_pkt.pos;
2709 pos = avio_tell(cur_stream->ic->pb);
2710 if (cur_stream->ic->bit_rate)
2711 incr *= cur_stream->ic->bit_rate / 8.0;
2715 stream_seek(cur_stream, pos, incr, 1);
2717 pos = get_master_clock(cur_stream);
2719 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2727 case SDL_MOUSEBUTTONDOWN:
2728 if (exit_on_mousedown) {
2732 case SDL_MOUSEMOTION:
2733 if (event.type == SDL_MOUSEBUTTONDOWN) {
2736 if (event.motion.state != SDL_PRESSED)
2741 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2742 uint64_t size = avio_size(cur_stream->ic->pb);
2743 stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2747 int tns, thh, tmm, tss;
2748 tns = cur_stream->ic->duration / 1000000LL;
2750 tmm = (tns % 3600) / 60;
2752 frac = x / cur_stream->width;
2755 mm = (ns % 3600) / 60;
2757 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2758 hh, mm, ss, thh, tmm, tss);
2759 ts = frac * cur_stream->ic->duration;
2760 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2761 ts += cur_stream->ic->start_time;
2762 stream_seek(cur_stream, ts, 0, 0);
2766 case SDL_VIDEORESIZE:
2768 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2769 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2770 screen_width = cur_stream->width = event.resize.w;
2771 screen_height = cur_stream->height = event.resize.h;
2778 case FF_ALLOC_EVENT:
2779 video_open(event.user.data1);
2780 alloc_picture(event.user.data1);
2782 case FF_REFRESH_EVENT:
2783 video_refresh_timer(event.user.data1);
2784 cur_stream->refresh = 0;
2792 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
2794 av_log(NULL, AV_LOG_ERROR,
2795 "Option '%s' has been removed, use private format options instead\n", opt);
2796 return AVERROR(EINVAL);
2799 static int opt_width(void *optctx, const char *opt, const char *arg)
2801 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2805 static int opt_height(void *optctx, const char *opt, const char *arg)
2807 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2811 static int opt_format(void *optctx, const char *opt, const char *arg)
2813 file_iformat = av_find_input_format(arg);
2814 if (!file_iformat) {
2815 fprintf(stderr, "Unknown input format: %s\n", arg);
2816 return AVERROR(EINVAL);
2821 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
2823 av_log(NULL, AV_LOG_ERROR,
2824 "Option '%s' has been removed, use private format options instead\n", opt);
2825 return AVERROR(EINVAL);
2828 static int opt_sync(void *optctx, const char *opt, const char *arg)
2830 if (!strcmp(arg, "audio"))
2831 av_sync_type = AV_SYNC_AUDIO_MASTER;
2832 else if (!strcmp(arg, "video"))
2833 av_sync_type = AV_SYNC_VIDEO_MASTER;
2834 else if (!strcmp(arg, "ext"))
2835 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2837 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2843 static int opt_seek(void *optctx, const char *opt, const char *arg)
2845 start_time = parse_time_or_die(opt, arg, 1);
2849 static int opt_duration(void *optctx, const char *opt, const char *arg)
2851 duration = parse_time_or_die(opt, arg, 1);
2855 static int opt_debug(void *optctx, const char *opt, const char *arg)
2857 av_log_set_level(99);
2858 debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2862 static int opt_vismv(void *optctx, const char *opt, const char *arg)
2864 debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2868 static const OptionDef options[] = {
2869 #include "cmdutils_common_opts.h"
2870 { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
2871 { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
2872 { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2873 { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
2874 { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
2875 { "vn", OPT_BOOL, { &video_disable }, "disable video" },
2876 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2877 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2878 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2879 { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
2880 { "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
2881 { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2882 { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
2883 { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
2884 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
2885 { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
2886 { "debug", HAS_ARG | OPT_EXPERT, { .func_arg = opt_debug }, "print specific debug info", "" },
2887 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
2888 { "vismv", HAS_ARG | OPT_EXPERT, { .func_arg = opt_vismv }, "visualize motion vectors", "" },
2889 { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
2890 { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
2891 { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2892 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
2893 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
2894 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
2895 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo", "algo" },
2896 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options", "bit_mask" },
2897 { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2898 { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
2899 { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
2900 { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
2901 { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
2902 { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
2903 { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2904 { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
2906 { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
2908 { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
2909 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { opt_default }, "generic catch all option", "" },
2910 { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2914 static void show_usage(void)
2916 printf("Simple media player\n");
2917 printf("usage: %s [options] input_file\n", program_name);
2921 void show_help_default(const char *opt, const char *arg)
2923 av_log_set_callback(log_callback_help);
2925 show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
2926 show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
2928 show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2929 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2930 #if !CONFIG_AVFILTER
2931 show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2933 printf("\nWhile playing:\n"
2935 "f toggle full screen\n"
2937 "a cycle audio channel\n"
2938 "v cycle video channel\n"
2939 "t cycle subtitle channel\n"
2940 "w show audio waves\n"
2941 "s activate frame-step mode\n"
2942 "left/right seek backward/forward 10 seconds\n"
2943 "down/up seek backward/forward 1 minute\n"
2944 "mouse click seek to percentage in file corresponding to fraction of width\n"
2948 static void opt_input_file(void *optctx, const char *filename)
2950 if (input_filename) {
2951 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2952 filename, input_filename);
2955 if (!strcmp(filename, "-"))
2957 input_filename = filename;
2960 /* Called from the main */
2961 int main(int argc, char **argv)
2965 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2966 parse_loglevel(argc, argv, options);
2968 /* register all codecs, demux and protocols */
2969 avcodec_register_all();
2971 avdevice_register_all();
2974 avfilter_register_all();
2977 avformat_network_init();
2983 parse_options(NULL, argc, argv, options, opt_input_file);
2985 if (!input_filename) {
2987 fprintf(stderr, "An input file must be specified\n");
2988 fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2992 if (display_disable) {
2995 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2996 #if !defined(__MINGW32__) && !defined(__APPLE__)
2997 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2999 if (SDL_Init (flags)) {
3000 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3004 if (!display_disable) {
3005 #if HAVE_SDL_VIDEO_SIZE
3006 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3007 fs_screen_width = vi->current_w;
3008 fs_screen_height = vi->current_h;
3012 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3013 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3014 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3016 av_init_packet(&flush_pkt);
3017 flush_pkt.data = "FLUSH";
3019 cur_stream = stream_open(input_filename, file_iformat);