double sigma_x, sigma_x2;
double avg_sigma_x2, min_sigma_x2, max_sigma_x2;
double min, max;
+ double nmin, nmax;
double min_run, max_run;
double min_runs, max_runs;
double min_diff, max_diff;
double diff1_sum;
- uint64_t mask;
+ uint64_t mask, imask;
uint64_t min_count, max_count;
uint64_t nb_samples;
} ChannelStats;
int metadata;
int reset_count;
int nb_frames;
+ int maxbitdepth;
} AudioStatsContext;
#define OFFSET(x) offsetof(AudioStatsContext, x)
AVFilterFormats *formats;
AVFilterChannelLayouts *layouts;
static const enum AVSampleFormat sample_fmts[] = {
+ AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16P,
+ AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32P,
+ AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64P,
+ AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBLP,
AV_SAMPLE_FMT_NONE
};
for (c = 0; c < s->nb_channels; c++) {
ChannelStats *p = &s->chstats[c];
- p->min = p->min_sigma_x2 = DBL_MAX;
- p->max = p->max_sigma_x2 = DBL_MIN;
+ p->min = p->nmin = p->min_sigma_x2 = DBL_MAX;
+ p->max = p->nmax = p->max_sigma_x2 = DBL_MIN;
p->min_diff = DBL_MAX;
p->max_diff = DBL_MIN;
p->sigma_x = 0;
p->max_runs = 0;
p->diff1_sum = 0;
p->mask = 0;
+ p->imask = 0xFFFFFFFFFFFFFFFF;
p->min_count = 0;
p->max_count = 0;
p->nb_samples = 0;
s->mult = exp((-1 / s->time_constant / outlink->sample_rate));
s->tc_samples = 5 * s->time_constant * outlink->sample_rate + .5;
s->nb_frames = 0;
+ s->maxbitdepth = av_get_bytes_per_sample(outlink->format) * 8;
reset_stats(s);
return 0;
}
-static unsigned bit_depth(uint64_t mask)
+static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
{
- unsigned result = 64;
+ unsigned result = s->maxbitdepth;
+
+ mask = mask & (~imask);
for (; result && !(mask & 1); --result, mask >>= 1);
- return result;
+ depth->den = result;
+ depth->num = 0;
+
+ for (; result; --result, mask >>= 1)
+ if (mask & 1)
+ depth->num++;
}
-static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d)
+static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d, double nd, int64_t i)
{
if (d < p->min) {
p->min = d;
+ p->nmin = nd;
p->min_run = 1;
p->min_runs = 0;
p->min_count = 1;
if (d > p->max) {
p->max = d;
+ p->nmax = nd;
p->max_run = 1;
p->max_runs = 0;
p->max_count = 1;
p->max_runs += p->max_run * p->max_run;
}
- p->sigma_x += d;
- p->sigma_x2 += d * d;
- p->avg_sigma_x2 = p->avg_sigma_x2 * s->mult + (1.0 - s->mult) * d * d;
+ p->sigma_x += nd;
+ p->sigma_x2 += nd * nd;
+ p->avg_sigma_x2 = p->avg_sigma_x2 * s->mult + (1.0 - s->mult) * nd * nd;
p->min_diff = FFMIN(p->min_diff, fabs(d - p->last));
p->max_diff = FFMAX(p->max_diff, fabs(d - p->last));
p->diff1_sum += fabs(d - p->last);
p->last = d;
- p->mask |= llrint(d * (UINT64_C(1) << 63));
+ p->mask |= i;
+ p->imask &= i;
if (p->nb_samples >= s->tc_samples) {
p->max_sigma_x2 = FFMAX(p->max_sigma_x2, p->avg_sigma_x2);
static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
{
- uint64_t mask = 0, min_count = 0, max_count = 0, nb_samples = 0;
+ uint64_t mask = 0, imask = 0xFFFFFFFFFFFFFFFF, min_count = 0, max_count = 0, nb_samples = 0;
double min_runs = 0, max_runs = 0,
min = DBL_MAX, max = DBL_MIN, min_diff = DBL_MAX, max_diff = 0,
+ nmin = DBL_MAX, nmax = DBL_MIN,
max_sigma_x = 0,
diff1_sum = 0,
sigma_x = 0,
sigma_x2 = 0,
min_sigma_x2 = DBL_MAX,
max_sigma_x2 = DBL_MIN;
+ AVRational depth;
int c;
for (c = 0; c < s->nb_channels; c++) {
min = FFMIN(min, p->min);
max = FFMAX(max, p->max);
+ nmin = FFMIN(nmin, p->nmin);
+ nmax = FFMAX(nmax, p->nmax);
min_diff = FFMIN(min_diff, p->min_diff);
max_diff = FFMAX(max_diff, p->max_diff);
diff1_sum += p->diff1_sum,
min_runs += p->min_runs;
max_runs += p->max_runs;
mask |= p->mask;
+ imask &= p->imask;
nb_samples += p->nb_samples;
if (fabs(p->sigma_x) > fabs(max_sigma_x))
max_sigma_x = p->sigma_x;
set_meta(metadata, c + 1, "Min_difference", "%f", p->min_diff);
set_meta(metadata, c + 1, "Max_difference", "%f", p->max_diff);
set_meta(metadata, c + 1, "Mean_difference", "%f", p->diff1_sum / (p->nb_samples - 1));
- set_meta(metadata, c + 1, "Peak_level", "%f", LINEAR_TO_DB(FFMAX(-p->min, p->max)));
+ set_meta(metadata, c + 1, "Peak_level", "%f", LINEAR_TO_DB(FFMAX(-p->nmin, p->nmax)));
set_meta(metadata, c + 1, "RMS_level", "%f", LINEAR_TO_DB(sqrt(p->sigma_x2 / p->nb_samples)));
set_meta(metadata, c + 1, "RMS_peak", "%f", LINEAR_TO_DB(sqrt(p->max_sigma_x2)));
set_meta(metadata, c + 1, "RMS_trough", "%f", LINEAR_TO_DB(sqrt(p->min_sigma_x2)));
set_meta(metadata, c + 1, "Crest_factor", "%f", p->sigma_x2 ? FFMAX(-p->min, p->max) / sqrt(p->sigma_x2 / p->nb_samples) : 1);
set_meta(metadata, c + 1, "Flat_factor", "%f", LINEAR_TO_DB((p->min_runs + p->max_runs) / (p->min_count + p->max_count)));
set_meta(metadata, c + 1, "Peak_count", "%f", (float)(p->min_count + p->max_count));
- set_meta(metadata, c + 1, "Bit_depth", "%f", bit_depth(p->mask));
+ bit_depth(s, p->mask, p->imask, &depth);
+ set_meta(metadata, c + 1, "Bit_depth", "%f", depth.num);
+ set_meta(metadata, c + 1, "Bit_depth2", "%f", depth.den);
}
set_meta(metadata, 0, "Overall.DC_offset", "%f", max_sigma_x / (nb_samples / s->nb_channels));
set_meta(metadata, 0, "Overall.Min_difference", "%f", min_diff);
set_meta(metadata, 0, "Overall.Max_difference", "%f", max_diff);
set_meta(metadata, 0, "Overall.Mean_difference", "%f", diff1_sum / (nb_samples - s->nb_channels));
- set_meta(metadata, 0, "Overall.Peak_level", "%f", LINEAR_TO_DB(FFMAX(-min, max)));
+ set_meta(metadata, 0, "Overall.Peak_level", "%f", LINEAR_TO_DB(FFMAX(-nmin, nmax)));
set_meta(metadata, 0, "Overall.RMS_level", "%f", LINEAR_TO_DB(sqrt(sigma_x2 / nb_samples)));
set_meta(metadata, 0, "Overall.RMS_peak", "%f", LINEAR_TO_DB(sqrt(max_sigma_x2)));
set_meta(metadata, 0, "Overall.RMS_trough", "%f", LINEAR_TO_DB(sqrt(min_sigma_x2)));
set_meta(metadata, 0, "Overall.Flat_factor", "%f", LINEAR_TO_DB((min_runs + max_runs) / (min_count + max_count)));
set_meta(metadata, 0, "Overall.Peak_count", "%f", (float)(min_count + max_count) / (double)s->nb_channels);
- set_meta(metadata, 0, "Overall.Bit_depth", "%f", bit_depth(mask));
+ bit_depth(s, mask, imask, &depth);
+ set_meta(metadata, 0, "Overall.Bit_depth", "%f", depth.num);
+ set_meta(metadata, 0, "Overall.Bit_depth2", "%f", depth.den);
set_meta(metadata, 0, "Overall.Number_of_samples", "%f", nb_samples / s->nb_channels);
}
AudioStatsContext *s = inlink->dst->priv;
AVDictionary **metadata = avpriv_frame_get_metadatap(buf);
const int channels = s->nb_channels;
- const double *src;
int i, c;
if (s->reset_count > 0) {
case AV_SAMPLE_FMT_DBLP:
for (c = 0; c < channels; c++) {
ChannelStats *p = &s->chstats[c];
- src = (const double *)buf->extended_data[c];
+ const double *src = (const double *)buf->extended_data[c];
for (i = 0; i < buf->nb_samples; i++, src++)
- update_stat(s, p, *src);
+ update_stat(s, p, *src, *src, llrint(*src * (UINT64_C(1) << 63)));
}
break;
- case AV_SAMPLE_FMT_DBL:
- src = (const double *)buf->extended_data[0];
+ case AV_SAMPLE_FMT_DBL: {
+ const double *src = (const double *)buf->extended_data[0];
for (i = 0; i < buf->nb_samples; i++) {
for (c = 0; c < channels; c++, src++)
- update_stat(s, &s->chstats[c], *src);
+ update_stat(s, &s->chstats[c], *src, *src, llrint(*src * (UINT64_C(1) << 63)));
+ }}
+ break;
+ case AV_SAMPLE_FMT_FLTP:
+ for (c = 0; c < channels; c++) {
+ ChannelStats *p = &s->chstats[c];
+ const float *src = (const float *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ update_stat(s, p, *src, *src, llrint(*src * (UINT64_C(1) << 31)));
}
break;
+ case AV_SAMPLE_FMT_FLT: {
+ const float *src = (const float *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ update_stat(s, &s->chstats[c], *src, *src, llrint(*src * (UINT64_C(1) << 31)));
+ }}
+ break;
+ case AV_SAMPLE_FMT_S64P:
+ for (c = 0; c < channels; c++) {
+ ChannelStats *p = &s->chstats[c];
+ const int64_t *src = (const int64_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ update_stat(s, p, *src, *src / (double)INT64_MAX, *src);
+ }
+ break;
+ case AV_SAMPLE_FMT_S64: {
+ const int64_t *src = (const int64_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ update_stat(s, &s->chstats[c], *src, *src / (double)INT64_MAX, *src);
+ }}
+ break;
+ case AV_SAMPLE_FMT_S32P:
+ for (c = 0; c < channels; c++) {
+ ChannelStats *p = &s->chstats[c];
+ const int32_t *src = (const int32_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ update_stat(s, p, *src, *src / (double)INT32_MAX, *src);
+ }
+ break;
+ case AV_SAMPLE_FMT_S32: {
+ const int32_t *src = (const int32_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ update_stat(s, &s->chstats[c], *src, *src / (double)INT32_MAX, *src);
+ }}
+ break;
+ case AV_SAMPLE_FMT_S16P:
+ for (c = 0; c < channels; c++) {
+ ChannelStats *p = &s->chstats[c];
+ const int16_t *src = (const int16_t *)buf->extended_data[c];
+
+ for (i = 0; i < buf->nb_samples; i++, src++)
+ update_stat(s, p, *src, *src / (double)INT16_MAX, *src);
+ }
+ break;
+ case AV_SAMPLE_FMT_S16: {
+ const int16_t *src = (const int16_t *)buf->extended_data[0];
+
+ for (i = 0; i < buf->nb_samples; i++) {
+ for (c = 0; c < channels; c++, src++)
+ update_stat(s, &s->chstats[c], *src, *src / (double)INT16_MAX, *src);
+ }}
+ break;
}
if (s->metadata)
static void print_stats(AVFilterContext *ctx)
{
AudioStatsContext *s = ctx->priv;
- uint64_t mask = 0, min_count = 0, max_count = 0, nb_samples = 0;
+ uint64_t mask = 0, imask = 0xFFFFFFFFFFFFFFFF, min_count = 0, max_count = 0, nb_samples = 0;
double min_runs = 0, max_runs = 0,
min = DBL_MAX, max = DBL_MIN, min_diff = DBL_MAX, max_diff = 0,
+ nmin = DBL_MAX, nmax = DBL_MIN,
max_sigma_x = 0,
diff1_sum = 0,
sigma_x = 0,
sigma_x2 = 0,
min_sigma_x2 = DBL_MAX,
max_sigma_x2 = DBL_MIN;
+ AVRational depth;
int c;
for (c = 0; c < s->nb_channels; c++) {
min = FFMIN(min, p->min);
max = FFMAX(max, p->max);
+ nmin = FFMIN(nmin, p->nmin);
+ nmax = FFMAX(nmax, p->nmax);
min_diff = FFMIN(min_diff, p->min_diff);
max_diff = FFMAX(max_diff, p->max_diff);
diff1_sum += p->diff1_sum,
min_runs += p->min_runs;
max_runs += p->max_runs;
mask |= p->mask;
+ imask &= p->imask;
nb_samples += p->nb_samples;
if (fabs(p->sigma_x) > fabs(max_sigma_x))
max_sigma_x = p->sigma_x;
av_log(ctx, AV_LOG_INFO, "Min difference: %f\n", p->min_diff);
av_log(ctx, AV_LOG_INFO, "Max difference: %f\n", p->max_diff);
av_log(ctx, AV_LOG_INFO, "Mean difference: %f\n", p->diff1_sum / (p->nb_samples - 1));
- av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-p->min, p->max)));
+ av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-p->nmin, p->nmax)));
av_log(ctx, AV_LOG_INFO, "RMS level dB: %f\n", LINEAR_TO_DB(sqrt(p->sigma_x2 / p->nb_samples)));
av_log(ctx, AV_LOG_INFO, "RMS peak dB: %f\n", LINEAR_TO_DB(sqrt(p->max_sigma_x2)));
if (p->min_sigma_x2 != 1)
av_log(ctx, AV_LOG_INFO, "RMS trough dB: %f\n",LINEAR_TO_DB(sqrt(p->min_sigma_x2)));
- av_log(ctx, AV_LOG_INFO, "Crest factor: %f\n", p->sigma_x2 ? FFMAX(-p->min, p->max) / sqrt(p->sigma_x2 / p->nb_samples) : 1);
+ av_log(ctx, AV_LOG_INFO, "Crest factor: %f\n", p->sigma_x2 ? FFMAX(-p->nmin, p->nmax) / sqrt(p->sigma_x2 / p->nb_samples) : 1);
av_log(ctx, AV_LOG_INFO, "Flat factor: %f\n", LINEAR_TO_DB((p->min_runs + p->max_runs) / (p->min_count + p->max_count)));
av_log(ctx, AV_LOG_INFO, "Peak count: %"PRId64"\n", p->min_count + p->max_count);
- av_log(ctx, AV_LOG_INFO, "Bit depth: %u\n", bit_depth(p->mask));
+ bit_depth(s, p->mask, p->imask, &depth);
+ av_log(ctx, AV_LOG_INFO, "Bit depth: %u/%u\n", depth.num, depth.den);
}
av_log(ctx, AV_LOG_INFO, "Overall\n");
av_log(ctx, AV_LOG_INFO, "Min difference: %f\n", min_diff);
av_log(ctx, AV_LOG_INFO, "Max difference: %f\n", max_diff);
av_log(ctx, AV_LOG_INFO, "Mean difference: %f\n", diff1_sum / (nb_samples - s->nb_channels));
- av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-min, max)));
+ av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-nmin, nmax)));
av_log(ctx, AV_LOG_INFO, "RMS level dB: %f\n", LINEAR_TO_DB(sqrt(sigma_x2 / nb_samples)));
av_log(ctx, AV_LOG_INFO, "RMS peak dB: %f\n", LINEAR_TO_DB(sqrt(max_sigma_x2)));
if (min_sigma_x2 != 1)
av_log(ctx, AV_LOG_INFO, "RMS trough dB: %f\n", LINEAR_TO_DB(sqrt(min_sigma_x2)));
av_log(ctx, AV_LOG_INFO, "Flat factor: %f\n", LINEAR_TO_DB((min_runs + max_runs) / (min_count + max_count)));
av_log(ctx, AV_LOG_INFO, "Peak count: %f\n", (min_count + max_count) / (double)s->nb_channels);
- av_log(ctx, AV_LOG_INFO, "Bit depth: %u\n", bit_depth(mask));
+ bit_depth(s, mask, imask, &depth);
+ av_log(ctx, AV_LOG_INFO, "Bit depth: %u/%u\n", depth.num, depth.den);
av_log(ctx, AV_LOG_INFO, "Number of samples: %"PRId64"\n", nb_samples / s->nb_channels);
}