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@ -37,6 +37,7 @@ typedef struct SilenceDetectContext { |
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double noise; ///< noise amplitude ratio
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double noise; ///< noise amplitude ratio
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double duration; ///< minimum duration of silence until notification
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double duration; ///< minimum duration of silence until notification
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int mono; ///< mono mode : check each channel separately (default = check when ALL channels are silent)
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int mono; ///< mono mode : check each channel separately (default = check when ALL channels are silent)
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int channels; ///< number of channels
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int independant_channels; ///< number of entries in following arrays (always 1 in mono mode)
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int independant_channels; ///< number of entries in following arrays (always 1 in mono mode)
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int64_t *nb_null_samples; ///< (array) current number of continuous zero samples
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int64_t *nb_null_samples; ///< (array) current number of continuous zero samples
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int64_t *start; ///< (array) if silence is detected, this value contains the time of the first zero sample (default/unset = INT64_MIN)
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int64_t *start; ///< (array) if silence is detected, this value contains the time of the first zero sample (default/unset = INT64_MIN)
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@ -79,7 +80,8 @@ static av_always_inline void update(SilenceDetectContext *s, AVFrame *insamples, |
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if (s->start[channel] == INT64_MIN) { |
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if (s->start[channel] == INT64_MIN) { |
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s->nb_null_samples[channel]++; |
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s->nb_null_samples[channel]++; |
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if (s->nb_null_samples[channel] >= nb_samples_notify) { |
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if (s->nb_null_samples[channel] >= nb_samples_notify) { |
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s->start[channel] = insamples->pts - (int64_t)(s->duration / av_q2d(time_base) + .5); |
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s->start[channel] = insamples->pts + av_rescale_q(current_sample / s->channels + 1 - nb_samples_notify * s->independant_channels / s->channels, |
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(AVRational){ 1, s->last_sample_rate }, time_base); |
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set_meta(insamples, s->mono ? channel + 1 : 0, "silence_start", |
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set_meta(insamples, s->mono ? channel + 1 : 0, "silence_start", |
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av_ts2timestr(s->start[channel], &time_base)); |
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av_ts2timestr(s->start[channel], &time_base)); |
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if (s->mono) |
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if (s->mono) |
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@ -132,7 +134,8 @@ static int config_input(AVFilterLink *inlink) |
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SilenceDetectContext *s = ctx->priv; |
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SilenceDetectContext *s = ctx->priv; |
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int c; |
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int c; |
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s->independant_channels = s->mono ? inlink->channels : 1; |
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s->channels = inlink->channels; |
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s->independant_channels = s->mono ? s->channels : 1; |
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s->nb_null_samples = av_mallocz_array(sizeof(*s->nb_null_samples), s->independant_channels); |
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s->nb_null_samples = av_mallocz_array(sizeof(*s->nb_null_samples), s->independant_channels); |
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if (!s->nb_null_samples) |
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if (!s->nb_null_samples) |
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return AVERROR(ENOMEM); |
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return AVERROR(ENOMEM); |
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Nicolas Gaullier
7 years ago
committed by
Paul B Mahol