Lines Matching refs:fs
49 void ff_framesync_init(FFFrameSync *fs, void *parent, unsigned nb_in)
51 fs->class = &framesync_class;
52 fs->parent = parent;
53 fs->nb_in = nb_in;
56 static void framesync_sync_level_update(FFFrameSync *fs)
60 for (i = 0; i < fs->nb_in; i++)
61 if (fs->in[i].state != STATE_EOF)
62 level = FFMAX(level, fs->in[i].sync);
63 av_assert0(level <= fs->sync_level);
64 if (level < fs->sync_level)
65 av_log(fs, AV_LOG_VERBOSE, "Sync level %u\n", level);
67 fs->sync_level = level;
69 fs->eof = 1;
72 int ff_framesync_configure(FFFrameSync *fs)
77 if (!fs->time_base.num) {
78 for (i = 0; i < fs->nb_in; i++) {
79 if (fs->in[i].sync) {
80 if (fs->time_base.num) {
81 gcd = av_gcd(fs->time_base.den, fs->in[i].time_base.den);
82 lcm = (fs->time_base.den / gcd) * fs->in[i].time_base.den;
84 fs->time_base.den = lcm;
85 fs->time_base.num = av_gcd(fs->time_base.num,
86 fs->in[i].time_base.num);
88 fs->time_base.num = 1;
89 fs->time_base.den = AV_TIME_BASE;
93 fs->time_base = fs->in[i].time_base;
97 if (!fs->time_base.num) {
98 av_log(fs, AV_LOG_ERROR, "Impossible to set time base\n");
101 av_log(fs, AV_LOG_VERBOSE, "Selected %d/%d time base\n",
102 fs->time_base.num, fs->time_base.den);
105 for (i = 0; i < fs->nb_in; i++)
106 fs->in[i].pts = fs->in[i].pts_next = AV_NOPTS_VALUE;
107 fs->sync_level = UINT_MAX;
108 framesync_sync_level_update(fs);
113 static void framesync_advance(FFFrameSync *fs)
119 if (fs->eof)
121 while (!fs->frame_ready) {
123 for (i = 0; i < fs->nb_in; i++) {
124 if (!fs->in[i].have_next) {
125 if (latest < 0 || fs->in[i].pts < fs->in[latest].pts)
130 fs->in_request = latest;
134 pts = fs->in[0].pts_next;
135 for (i = 1; i < fs->nb_in; i++)
136 if (fs->in[i].pts_next < pts)
137 pts = fs->in[i].pts_next;
139 fs->eof = 1;
142 for (i = 0; i < fs->nb_in; i++) {
143 if (fs->in[i].pts_next == pts ||
144 (fs->in[i].before == EXT_INFINITY &&
145 fs->in[i].state == STATE_BOF)) {
146 av_frame_free(&fs->in[i].frame);
147 fs->in[i].frame = fs->in[i].frame_next;
148 fs->in[i].pts = fs->in[i].pts_next;
149 fs->in[i].frame_next = NULL;
150 fs->in[i].pts_next = AV_NOPTS_VALUE;
151 fs->in[i].have_next = 0;
152 fs->in[i].state = fs->in[i].frame ? STATE_RUN : STATE_EOF;
153 if (fs->in[i].sync == fs->sync_level && fs->in[i].frame)
154 fs->frame_ready = 1;
155 if (fs->in[i].state == STATE_EOF &&
156 fs->in[i].after == EXT_STOP)
157 fs->eof = 1;
160 if (fs->eof)
161 fs->frame_ready = 0;
162 if (fs->frame_ready)
163 for (i = 0; i < fs->nb_in; i++)
164 if ((fs->in[i].state == STATE_BOF &&
165 fs->in[i].before == EXT_STOP))
166 fs->frame_ready = 0;
167 fs->pts = pts;
171 static int64_t framesync_pts_extrapolate(FFFrameSync *fs, unsigned in,
178 static void framesync_inject_frame(FFFrameSync *fs, unsigned in, AVFrame *frame)
182 av_assert0(!fs->in[in].have_next);
184 pts = av_rescale_q(frame->pts, fs->in[in].time_base, fs->time_base);
187 pts = fs->in[in].state != STATE_RUN || fs->in[in].after == EXT_INFINITY
188 ? INT64_MAX : framesync_pts_extrapolate(fs, in, fs->in[in].pts);
189 fs->in[in].sync = 0;
190 framesync_sync_level_update(fs);
192 fs->in[in].frame_next = frame;
193 fs->in[in].pts_next = pts;
194 fs->in[in].have_next = 1;
197 int ff_framesync_add_frame(FFFrameSync *fs, unsigned in, AVFrame *frame)
199 av_assert1(in < fs->nb_in);
200 if (!fs->in[in].have_next)
201 framesync_inject_frame(fs, in, frame);
203 ff_bufqueue_add(fs, &fs->in[in].queue, frame);
207 void ff_framesync_next(FFFrameSync *fs)
211 av_assert0(!fs->frame_ready);
212 for (i = 0; i < fs->nb_in; i++)
213 if (!fs->in[i].have_next && fs->in[i].queue.available)
214 framesync_inject_frame(fs, i, ff_bufqueue_get(&fs->in[i].queue));
215 fs->frame_ready = 0;
216 framesync_advance(fs);
219 void ff_framesync_drop(FFFrameSync *fs)
221 fs->frame_ready = 0;
224 int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe,
232 if (!fs->in[in].frame) {
236 frame = fs->in[in].frame;
240 pts_next = fs->in[in].have_next ? fs->in[in].pts_next : INT64_MAX;
241 for (i = 0; i < fs->nb_in && !need_copy; i++)
242 if (i != in && fs->in[i].sync &&
243 (!fs->in[i].have_next || fs->in[i].pts_next < pts_next))
253 fs->in[in].frame = NULL;
255 fs->frame_ready = 0;
261 void ff_framesync_uninit(FFFrameSync *fs)
265 for (i = 0; i < fs->nb_in; i++) {
266 av_frame_free(&fs->in[i].frame);
267 av_frame_free(&fs->in[i].frame_next);
268 ff_bufqueue_discard_all(&fs->in[i].queue);
272 int ff_framesync_process_frame(FFFrameSync *fs, unsigned all)
276 av_assert0(fs->on_event);
278 ff_framesync_next(fs);
279 if (fs->eof || !fs->frame_ready)
281 if ((ret = fs->on_event(fs)) < 0)
283 ff_framesync_drop(fs);
288 if (!count && fs->eof)
293 int ff_framesync_filter_frame(FFFrameSync *fs, AVFilterLink *inlink,
298 if ((ret = ff_framesync_process_frame(fs, 1)) < 0)
300 if ((ret = ff_framesync_add_frame(fs, FF_INLINK_IDX(inlink), in)) < 0)
302 if ((ret = ff_framesync_process_frame(fs, 0)) < 0)
307 int ff_framesync_request_frame(FFFrameSync *fs, AVFilterLink *outlink)
312 if ((ret = ff_framesync_process_frame(fs, 0)) < 0)
316 if (fs->eof)
319 input = fs->in_request;
322 if ((ret = ff_framesync_add_frame(fs, input, NULL)) < 0)
324 if ((ret = ff_framesync_process_frame(fs, 0)) < 0)