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avfilter/af_dynaudnorm: add timeline support

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This commit is contained in:
Paul B Mahol 2019-04-30 10:54:45 +02:00
parent c82d81ba42
commit 9cc10418b3
1 changed files with 15 additions and 4 deletions
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19
libavfilter/af_dynaudnorm.c
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@ -74,6 +74,8 @@ typedef struct DynamicAudioNormalizerContext {
cqueue **gain_history_original;
cqueue **gain_history_minimum;
cqueue **gain_history_smoothed;
cqueue *is_enabled;
} DynamicAudioNormalizerContext;
#define OFFSET(x) offsetof(DynamicAudioNormalizerContext, x)
@ -282,6 +284,9 @@ static av_cold void uninit(AVFilterContext *ctx)
av_freep(&s->gain_history_minimum);
av_freep(&s->gain_history_smoothed);
cqueue_free(s->is_enabled);
s->is_enabled = NULL;
av_freep(&s->weights);
ff_bufqueue_discard_all(&s->queue);
@ -308,10 +313,11 @@ static int config_input(AVFilterLink *inlink)
s->gain_history_minimum = av_calloc(inlink->channels, sizeof(*s->gain_history_minimum));
s->gain_history_smoothed = av_calloc(inlink->channels, sizeof(*s->gain_history_smoothed));
s->weights = av_malloc_array(s->filter_size, sizeof(*s->weights));
s->is_enabled = cqueue_create(s->filter_size);
if (!s->prev_amplification_factor || !s->dc_correction_value ||
!s->compress_threshold || !s->fade_factors[0] || !s->fade_factors[1] ||
!s->gain_history_original || !s->gain_history_minimum ||
!s->gain_history_smoothed || !s->weights)
!s->gain_history_smoothed || !s->is_enabled || !s->weights)
return AVERROR(ENOMEM);
for (c = 0; c < inlink->channels; c++) {
@ -631,7 +637,7 @@ static void analyze_frame(DynamicAudioNormalizerContext *s, AVFrame *frame)
}
}
static void amplify_frame(DynamicAudioNormalizerContext *s, AVFrame *frame)
static void amplify_frame(DynamicAudioNormalizerContext *s, AVFrame *frame, int enabled)
{
int c, i;
@ -641,7 +647,7 @@ static void amplify_frame(DynamicAudioNormalizerContext *s, AVFrame *frame)
cqueue_dequeue(s->gain_history_smoothed[c], &current_amplification_factor);
for (i = 0; i < frame->nb_samples; i++) {
for (i = 0; i < frame->nb_samples && enabled; i++) {
const double amplification_factor = fade(s->prev_amplification_factor[c],
current_amplification_factor, i,
s->fade_factors);
@ -664,13 +670,17 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
int ret = 1;
if (!cqueue_empty(s->gain_history_smoothed[0])) {
double is_enabled;
AVFrame *out = ff_bufqueue_get(&s->queue);
amplify_frame(s, out);
cqueue_dequeue(s->is_enabled, &is_enabled);
amplify_frame(s, out, is_enabled > 0.);
ret = ff_filter_frame(outlink, out);
}
av_frame_make_writable(in);
cqueue_enqueue(s->is_enabled, !ctx->is_disabled);
analyze_frame(s, in);
ff_bufqueue_add(ctx, &s->queue, in);
@ -795,4 +805,5 @@ AVFilter ff_af_dynaudnorm = {
.inputs = avfilter_af_dynaudnorm_inputs,
.outputs = avfilter_af_dynaudnorm_outputs,
.priv_class = &dynaudnorm_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};