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Code Issues Releases Activity

avfilter/f_reverse: set output frame duration

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This commit is contained in:
Paul B Mahol 2023-01-27 23:52:14 +01:00
parent d9b07a9853
commit ac37b2c2b1
1 changed files with 19 additions and 3 deletions
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22
libavfilter/f_reverse.c
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@ -33,7 +33,9 @@ typedef struct ReverseContext {
AVFrame **frames; AVFrame **frames;
unsigned int frames_size; unsigned int frames_size;
unsigned int pts_size; unsigned int pts_size;
unsigned int duration_size;
int64_t *pts; int64_t *pts;
int64_t *duration;
int flush_idx; int flush_idx;
int64_t nb_samples; int64_t nb_samples;
} ReverseContext; } ReverseContext;
@ -47,12 +49,15 @@ static av_cold int init(AVFilterContext *ctx)
if (!s->pts) if (!s->pts)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
s->duration = av_fast_realloc(NULL, &s->duration_size,
DEFAULT_LENGTH * sizeof(*(s->duration)));
if (!s->duration)
return AVERROR(ENOMEM);
s->frames = av_fast_realloc(NULL, &s->frames_size, s->frames = av_fast_realloc(NULL, &s->frames_size,
DEFAULT_LENGTH * sizeof(*(s->frames))); DEFAULT_LENGTH * sizeof(*(s->frames)));
if (!s->frames) { if (!s->frames)
av_freep(&s->pts);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
}
return 0; return 0;
} }
@ -67,6 +72,7 @@ static av_cold void uninit(AVFilterContext *ctx)
} }
av_freep(&s->pts); av_freep(&s->pts);
av_freep(&s->duration);
av_freep(&s->frames); av_freep(&s->frames);
} }
@ -83,6 +89,13 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
s->pts = ptr; s->pts = ptr;
} }
if (s->nb_frames + 1 > s->duration_size / sizeof(*(s->duration))) {
ptr = av_fast_realloc(s->duration, &s->duration_size, s->duration_size * 2);
if (!ptr)
return AVERROR(ENOMEM);
s->duration = ptr;
}
if (s->nb_frames + 1 > s->frames_size / sizeof(*(s->frames))) { if (s->nb_frames + 1 > s->frames_size / sizeof(*(s->frames))) {
ptr = av_fast_realloc(s->frames, &s->frames_size, s->frames_size * 2); ptr = av_fast_realloc(s->frames, &s->frames_size, s->frames_size * 2);
if (!ptr) if (!ptr)
@ -92,6 +105,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
s->frames[s->nb_frames] = in; s->frames[s->nb_frames] = in;
s->pts[s->nb_frames] = in->pts; s->pts[s->nb_frames] = in->pts;
s->duration[s->nb_frames] = in->duration;
s->nb_frames++; s->nb_frames++;
return 0; return 0;
@ -109,6 +123,7 @@ static int request_frame(AVFilterLink *outlink)
if (ret == AVERROR_EOF && s->nb_frames > 0) { if (ret == AVERROR_EOF && s->nb_frames > 0) {
AVFrame *out = s->frames[s->nb_frames - 1]; AVFrame *out = s->frames[s->nb_frames - 1];
out->duration= s->duration[s->flush_idx];
out->pts = s->pts[s->flush_idx++]; out->pts = s->pts[s->flush_idx++];
ret = ff_filter_frame(outlink, out); ret = ff_filter_frame(outlink, out);
s->frames[s->nb_frames - 1] = NULL; s->frames[s->nb_frames - 1] = NULL;
@ -252,6 +267,7 @@ static int areverse_request_frame(AVFilterLink *outlink)
if (ret == AVERROR_EOF && s->nb_frames > 0) { if (ret == AVERROR_EOF && s->nb_frames > 0) {
AVFrame *out = s->frames[s->nb_frames - 1]; AVFrame *out = s->frames[s->nb_frames - 1];
out->duration = s->duration[s->flush_idx];
out->pts = s->pts[s->flush_idx++] - s->nb_samples; out->pts = s->pts[s->flush_idx++] - s->nb_samples;
s->nb_samples += s->pts[s->flush_idx] - s->pts[s->flush_idx - 1] - out->nb_samples; s->nb_samples += s->pts[s->flush_idx] - s->pts[s->flush_idx - 1] - out->nb_samples;