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Code Issues Releases Activity

avfilter/af_astats: add support for optimized min/max/peak calculation

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2019-03-02 00:10:21 +01:00
parent 5cc4b79b29
commit 6af67dcc35
1 changed files with 21 additions and 5 deletions
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26
libavfilter/af_astats.c
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@ -49,6 +49,8 @@
#define MEASURE_ZERO_CROSSINGS_RATE (1 << 17)
#define MEASURE_NUMBER_OF_SAMPLES (1 << 18)
#define MEASURE_MINMAXPEAK (MEASURE_MIN_LEVEL | MEASURE_MAX_LEVEL | MEASURE_PEAK_LEVEL)
typedef struct ChannelStats {
double last;
double last_non_zero;
@ -216,6 +218,14 @@ static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRat
depth->num++;
}
static inline void update_minmax(AudioStatsContext *s, ChannelStats *p, double d)
{
if (d < p->min)
p->min = d;
if (d > p->max)
p->max = d;
}
static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d, double nd, int64_t i)
{
if (d < p->min) {
@ -406,26 +416,32 @@ static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
set_meta(metadata, 0, "Overall.Number_of_samples", "%f", nb_samples / s->nb_channels);
}
#define UPDATE_STATS_P(type, double_sample, normalized_sample, int_sample) \
#define UPDATE_STATS_P(type, update_func, channel_func) \
for (int c = 0; c < channels; c++) { \
ChannelStats *p = &s->chstats[c]; \
const type *src = (const type *)data[c]; \
const type * const srcend = src + samples; \
for (; src < srcend; src++) \
update_stat(s, p, double_sample, normalized_sample, int_sample); \
update_func; \
channel_func; \
}
#define UPDATE_STATS_I(type, double_sample, normalized_sample, int_sample) \
#define UPDATE_STATS_I(type, update_func, channel_func) \
for (int c = 0; c < channels; c++) { \
ChannelStats *p = &s->chstats[c]; \
const type *src = (const type *)data[0]; \
const type * const srcend = src + samples * channels; \
for (src += c; src < srcend; src += channels) \
update_stat(s, p, double_sample, normalized_sample, int_sample); \
update_func; \
channel_func; \
}
#define UPDATE_STATS(planar, type, sample, normalizer_suffix, int_sample) \
UPDATE_STATS_##planar(type, sample, sample normalizer_suffix, int_sample);
if ((s->measure_overall | s->measure_perchannel) & ~MEASURE_MINMAXPEAK) { \
UPDATE_STATS_##planar(type, update_stat(s, p, sample, sample normalizer_suffix, int_sample), ); \
} else { \
UPDATE_STATS_##planar(type, update_minmax(s, p, sample), p->nmin = p->min normalizer_suffix; p->nmax = p->max normalizer_suffix;); \
}
static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
{