mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter/af_axcorrelate: add DBLP sample format support
This commit is contained in:
Paul B Mahol
parent
95cae4922d
commit
30d4609484
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@ -47,126 +47,156 @@ typedef struct AudioXCorrelateContext {
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int (*xcorrelate)(AVFilterContext *ctx, AVFrame *out, int available);
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} AudioXCorrelateContext;
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static float mean_sum(const float *in, int size)
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{
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float mean_sum = 0.f;
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for (int i = 0; i < size; i++)
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mean_sum += in[i];
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return mean_sum;
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#define MEAN_SUM(suffix, type, zero) \
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static type mean_sum_##suffix(const type *in, \
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int size) \
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{ \
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type mean_sum = zero; \
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\
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for (int i = 0; i < size; i++) \
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mean_sum += in[i]; \
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\
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return mean_sum; \
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}
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static float square_sum(const float *x, const float *y, int size)
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{
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float square_sum = 0.f;
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MEAN_SUM(f, float, 0.f)
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MEAN_SUM(d, double, 0.0)
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for (int i = 0; i < size; i++)
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square_sum += x[i] * y[i];
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return square_sum;
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#define SQUARE_SUM(suffix, type, zero) \
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static type square_sum_##suffix(const type *x, \
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const type *y, \
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int size) \
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{ \
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type square_sum = zero; \
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\
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for (int i = 0; i < size; i++) \
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square_sum += x[i] * y[i]; \
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\
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return square_sum; \
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}
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static float xcorrelate(const float *x, const float *y, float sumx, float sumy, int size)
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{
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const float xm = sumx / size, ym = sumy / size;
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float num = 0.f, den, den0 = 0.f, den1 = 0.f;
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SQUARE_SUM(f, float, 0.f)
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SQUARE_SUM(d, double, 0.0)
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for (int i = 0; i < size; i++) {
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float xd = x[i] - xm;
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float yd = y[i] - ym;
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num += xd * yd;
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den0 += xd * xd;
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den1 += yd * yd;
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}
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num /= size;
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den = sqrtf((den0 * den1) / size / size);
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return den <= 1e-6f ? 0.f : num / den;
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#define XCORRELATE(suffix, type, zero, small, sqrtfun)\
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static type xcorrelate_##suffix(const type *x, \
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const type *y, \
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type sumx, \
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type sumy, int size) \
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{ \
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const type xm = sumx / size, ym = sumy / size; \
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type num = zero, den, den0 = zero, den1 = zero; \
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\
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for (int i = 0; i < size; i++) { \
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type xd = x[i] - xm; \
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type yd = y[i] - ym; \
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\
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num += xd * yd; \
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den0 += xd * xd; \
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den1 += yd * yd; \
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} \
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\
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num /= size; \
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den = sqrtfun((den0 * den1) / size / size); \
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\
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return den <= small ? zero : num / den; \
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}
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static int xcorrelate_slow(AVFilterContext *ctx, AVFrame *out, int available)
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{
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AudioXCorrelateContext *s = ctx->priv;
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const int size = FFMIN(available, s->size);
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int used;
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XCORRELATE(f, float, 0.f, 1e-6f, sqrtf)
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XCORRELATE(d, double, 0.0, 1e-9, sqrt)
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for (int ch = 0; ch < out->channels; ch++) {
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const float *x = (const float *)s->cache[0]->extended_data[ch];
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const float *y = (const float *)s->cache[1]->extended_data[ch];
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float *sumx = (float *)s->mean_sum[0]->extended_data[ch];
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float *sumy = (float *)s->mean_sum[1]->extended_data[ch];
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float *dst = (float *)out->extended_data[ch];
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used = s->used;
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if (!used) {
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sumx[0] = mean_sum(x, size);
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sumy[0] = mean_sum(y, size);
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used = 1;
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}
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for (int n = 0; n < out->nb_samples; n++) {
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const int idx = available <= s->size ? out->nb_samples - n - 1 : n + size;
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dst[n] = xcorrelate(x + n, y + n, sumx[0], sumy[0], size);
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sumx[0] -= x[n];
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sumx[0] += x[idx];
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sumy[0] -= y[n];
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sumy[0] += y[idx];
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}
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}
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return used;
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#define XCORRELATE_SLOW(suffix, type) \
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static int xcorrelate_slow_##suffix(AVFilterContext *ctx, \
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AVFrame *out, int available) \
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{ \
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AudioXCorrelateContext *s = ctx->priv; \
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const int size = FFMIN(available, s->size); \
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int used; \
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\
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for (int ch = 0; ch < out->channels; ch++) { \
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const type *x = (const type *)s->cache[0]->extended_data[ch]; \
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const type *y = (const type *)s->cache[1]->extended_data[ch]; \
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type *sumx = (type *)s->mean_sum[0]->extended_data[ch]; \
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type *sumy = (type *)s->mean_sum[1]->extended_data[ch]; \
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type *dst = (type *)out->extended_data[ch]; \
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\
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used = s->used; \
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if (!used) { \
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sumx[0] = mean_sum_##suffix(x, size); \
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sumy[0] = mean_sum_##suffix(y, size); \
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used = 1; \
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} \
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\
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for (int n = 0; n < out->nb_samples; n++) { \
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const int idx = available <= s->size ? out->nb_samples - n - 1 : n + size; \
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\
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dst[n] = xcorrelate_##suffix(x + n, y + n, \
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sumx[0], sumy[0], \
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size); \
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\
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sumx[0] -= x[n]; \
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sumx[0] += x[idx]; \
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sumy[0] -= y[n]; \
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sumy[0] += y[idx]; \
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} \
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} \
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\
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return used; \
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}
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static int xcorrelate_fast(AVFilterContext *ctx, AVFrame *out, int available)
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{
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AudioXCorrelateContext *s = ctx->priv;
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const int size = FFMIN(available, s->size);
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int used;
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XCORRELATE_SLOW(f, float)
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XCORRELATE_SLOW(d, double)
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for (int ch = 0; ch < out->channels; ch++) {
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const float *x = (const float *)s->cache[0]->extended_data[ch];
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const float *y = (const float *)s->cache[1]->extended_data[ch];
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float *num_sum = (float *)s->num_sum->extended_data[ch];
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float *den_sumx = (float *)s->den_sum[0]->extended_data[ch];
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float *den_sumy = (float *)s->den_sum[1]->extended_data[ch];
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float *dst = (float *)out->extended_data[ch];
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used = s->used;
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if (!used) {
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num_sum[0] = square_sum(x, y, size);
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den_sumx[0] = square_sum(x, x, size);
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den_sumy[0] = square_sum(y, y, size);
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used = 1;
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}
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for (int n = 0; n < out->nb_samples; n++) {
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const int idx = available <= s->size ? out->nb_samples - n - 1 : n + size;
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float num, den;
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num = num_sum[0] / size;
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den = sqrtf((den_sumx[0] * den_sumy[0]) / size / size);
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dst[n] = den <= 1e-6f ? 0.f : num / den;
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num_sum[0] -= x[n] * y[n];
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num_sum[0] += x[idx] * y[idx];
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den_sumx[0] -= x[n] * x[n];
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den_sumx[0] += x[idx] * x[idx];
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den_sumx[0] = FFMAX(den_sumx[0], 0.f);
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den_sumy[0] -= y[n] * y[n];
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den_sumy[0] += y[idx] * y[idx];
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den_sumy[0] = FFMAX(den_sumy[0], 0.f);
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}
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}
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return used;
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#define XCORRELATE_FAST(suffix, type, zero, small, sqrtfun) \
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static int xcorrelate_fast_##suffix(AVFilterContext *ctx, AVFrame *out, \
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int available) \
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{ \
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AudioXCorrelateContext *s = ctx->priv; \
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const int size = FFMIN(available, s->size); \
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int used; \
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\
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for (int ch = 0; ch < out->channels; ch++) { \
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const type *x = (const type *)s->cache[0]->extended_data[ch]; \
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const type *y = (const type *)s->cache[1]->extended_data[ch]; \
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type *num_sum = (type *)s->num_sum->extended_data[ch]; \
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type *den_sumx = (type *)s->den_sum[0]->extended_data[ch]; \
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type *den_sumy = (type *)s->den_sum[1]->extended_data[ch]; \
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type *dst = (type *)out->extended_data[ch]; \
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\
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used = s->used; \
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if (!used) { \
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num_sum[0] = square_sum_##suffix(x, y, size); \
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den_sumx[0] = square_sum_##suffix(x, x, size); \
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den_sumy[0] = square_sum_##suffix(y, y, size); \
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used = 1; \
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} \
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\
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for (int n = 0; n < out->nb_samples; n++) { \
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const int idx = available <= s->size ? out->nb_samples - n - 1 : n + size; \
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type num, den; \
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\
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num = num_sum[0] / size; \
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den = sqrtfun((den_sumx[0] * den_sumy[0]) / size / size); \
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\
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dst[n] = den <= small ? zero : num / den; \
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\
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num_sum[0] -= x[n] * y[n]; \
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num_sum[0] += x[idx] * y[idx]; \
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den_sumx[0] -= x[n] * x[n]; \
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den_sumx[0] += x[idx] * x[idx]; \
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den_sumx[0] = FFMAX(den_sumx[0], zero); \
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den_sumy[0] -= y[n] * y[n]; \
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den_sumy[0] += y[idx] * y[idx]; \
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den_sumy[0] = FFMAX(den_sumy[0], zero); \
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} \
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} \
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\
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return used; \
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}
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XCORRELATE_FAST(f, float, 0.f, 1e-6f, sqrtf)
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XCORRELATE_FAST(d, double, 0.0, 1e-9, sqrt)
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static int activate(AVFilterContext *ctx)
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{
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AudioXCorrelateContext *s = ctx->priv;
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@ -265,13 +295,10 @@ static int activate(AVFilterContext *ctx)
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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AVFilterLink *inlink = ctx->inputs[0];
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AudioXCorrelateContext *s = ctx->priv;
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s->pts = AV_NOPTS_VALUE;
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outlink->format = inlink->format;
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outlink->channels = inlink->channels;
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s->fifo[0] = av_audio_fifo_alloc(outlink->format, outlink->channels, s->size);
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s->fifo[1] = av_audio_fifo_alloc(outlink->format, outlink->channels, s->size);
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if (!s->fifo[0] || !s->fifo[1])
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@ -287,8 +314,15 @@ static int config_output(AVFilterLink *outlink)
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return AVERROR(ENOMEM);
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switch (s->algo) {
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case 0: s->xcorrelate = xcorrelate_slow; break;
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case 1: s->xcorrelate = xcorrelate_fast; break;
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case 0: s->xcorrelate = xcorrelate_slow_f; break;
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case 1: s->xcorrelate = xcorrelate_fast_f; break;
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}
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if (outlink->format == AV_SAMPLE_FMT_DBLP) {
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switch (s->algo) {
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case 0: s->xcorrelate = xcorrelate_slow_d; break;
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case 1: s->xcorrelate = xcorrelate_fast_d; break;
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}
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}
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return 0;
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@ -350,5 +384,5 @@ const AVFilter ff_af_axcorrelate = {
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.uninit = uninit,
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FILTER_INPUTS(inputs),
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FILTER_OUTPUTS(outputs),
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FILTER_SINGLE_SAMPLEFMT(AV_SAMPLE_FMT_FLTP),
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FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_DBLP),
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};
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