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Code Issues Releases Activity

avfilter/af_headphone: fix filtering of non-power of 2 length IRs in time domain

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This commit is contained in:
Paul B Mahol 2018-12-22 20:44:15 +01:00
parent a1b4f120c0
commit 7c201e420a
1 changed files with 24 additions and 21 deletions
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45
libavfilter/af_headphone.c
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@ -50,6 +50,7 @@ typedef struct HeadphoneContext {
int eof_hrirs;
int ir_len;
int air_len;
int mapping[64];
@ -172,6 +173,7 @@ static int headphone_convolute(AVFilterContext *ctx, void *arg, int jobnr, int n
float *ringbuffer = td->ringbuffer[jobnr];
float *temp_src = td->temp_src[jobnr];
const int ir_len = s->ir_len;
const int air_len = s->air_len;
const float *src = (const float *)in->data[0];
float *dst = (float *)out->data[0];
const int in_channels = in->channels;
@ -200,23 +202,23 @@ static int headphone_convolute(AVFilterContext *ctx, void *arg, int jobnr, int n
if (l == s->lfe_channel) {
*dst += *(buffer[s->lfe_channel] + wr) * s->gain_lfe;
temp_ir += FFALIGN(ir_len, 16);
temp_ir += air_len;
continue;
}
read = (wr - *(delay + l) - (ir_len - 1) + buffer_length) & modulo;
read = (wr - *(delay + l) - (air_len - 1) + buffer_length) & modulo;
if (read + ir_len < buffer_length) {
memcpy(temp_src, bptr + read, ir_len * sizeof(*temp_src));
if (read + air_len < buffer_length) {
memcpy(temp_src, bptr + read, air_len * sizeof(*temp_src));
} else {
int len = FFMIN(ir_len - (read % ir_len), buffer_length - read);
int len = FFMIN(air_len - (read % air_len), buffer_length - read);
memcpy(temp_src, bptr + read, len * sizeof(*temp_src));
memcpy(temp_src + len, bptr, (ir_len - len) * sizeof(*temp_src));
memcpy(temp_src + len, bptr, (air_len - len) * sizeof(*temp_src));
}
dst[0] += s->fdsp->scalarproduct_float(temp_ir, temp_src, ir_len);
temp_ir += FFALIGN(ir_len, 16);
dst[0] += s->fdsp->scalarproduct_float(temp_ir, temp_src, FFALIGN(ir_len, 32));
temp_ir += air_len;
}
if (fabsf(dst[0]) > 1)
@ -260,7 +262,7 @@ static int headphone_fast_convolute(AVFilterContext *ctx, void *arg, int jobnr,
dst += offset;
n_read = FFMIN(s->ir_len, in->nb_samples);
n_read = FFMIN(ir_len, in->nb_samples);
for (j = 0; j < n_read; j++) {
dst[2 * j] = ringbuffer[wr];
ringbuffer[wr] = 0.0;
@ -396,8 +398,9 @@ static int convert_coeffs(AVFilterContext *ctx, AVFilterLink *inlink)
int n_fft;
int i, j, k;
s->buffer_length = 1 << (32 - ff_clz(s->ir_len));
s->n_fft = n_fft = 1 << (32 - ff_clz(s->ir_len + s->size));
s->air_len = 1 << (32 - ff_clz(ir_len));
s->buffer_length = 1 << (32 - ff_clz(s->air_len));
s->n_fft = n_fft = 1 << (32 - ff_clz(ir_len + s->size));
if (s->type == FREQUENCY_DOMAIN) {
fft_in_l = av_calloc(n_fft, sizeof(*fft_in_l));
@ -423,8 +426,8 @@ static int convert_coeffs(AVFilterContext *ctx, AVFilterLink *inlink)
}
}
s->data_ir[0] = av_calloc(FFALIGN(s->ir_len, 16), sizeof(float) * s->nb_irs);
s->data_ir[1] = av_calloc(FFALIGN(s->ir_len, 16), sizeof(float) * s->nb_irs);
s->data_ir[0] = av_calloc(s->air_len, sizeof(float) * s->nb_irs);
s->data_ir[1] = av_calloc(s->air_len, sizeof(float) * s->nb_irs);
s->delay[0] = av_calloc(s->nb_irs, sizeof(float));
s->delay[1] = av_calloc(s->nb_irs, sizeof(float));
@ -449,11 +452,11 @@ static int convert_coeffs(AVFilterContext *ctx, AVFilterLink *inlink)
}
if (s->type == TIME_DOMAIN) {
s->temp_src[0] = av_calloc(FFALIGN(ir_len, 16), sizeof(float));
s->temp_src[1] = av_calloc(FFALIGN(ir_len, 16), sizeof(float));
s->temp_src[0] = av_calloc(s->air_len, sizeof(float));
s->temp_src[1] = av_calloc(s->air_len, sizeof(float));
data_ir_l = av_calloc(nb_irs * FFALIGN(ir_len, 16), sizeof(*data_ir_l));
data_ir_r = av_calloc(nb_irs * FFALIGN(ir_len, 16), sizeof(*data_ir_r));
data_ir_l = av_calloc(nb_irs * s->air_len, sizeof(*data_ir_l));
data_ir_r = av_calloc(nb_irs * s->air_len, sizeof(*data_ir_r));
if (!data_ir_r || !data_ir_l || !s->temp_src[0] || !s->temp_src[1]) {
ret = AVERROR(ENOMEM);
goto fail;
@ -495,7 +498,7 @@ static int convert_coeffs(AVFilterContext *ctx, AVFilterLink *inlink)
if (idx == -1)
continue;
if (s->type == TIME_DOMAIN) {
offset = idx * FFALIGN(len, 16);
offset = idx * s->air_len;
for (j = 0; j < len; j++) {
data_ir_l[offset + j] = ptr[len * 2 - j * 2 - 2] * gain_lin;
data_ir_r[offset + j] = ptr[len * 2 - j * 2 - 1] * gain_lin;
@ -538,7 +541,7 @@ static int convert_coeffs(AVFilterContext *ctx, AVFilterLink *inlink)
I = idx * 2;
if (s->type == TIME_DOMAIN) {
offset = idx * FFALIGN(len, 16);
offset = idx * s->air_len;
for (j = 0; j < len; j++) {
data_ir_l[offset + j] = ptr[len * N - j * N - N + I ] * gain_lin;
data_ir_r[offset + j] = ptr[len * N - j * N - N + I + 1] * gain_lin;
@ -567,8 +570,8 @@ static int convert_coeffs(AVFilterContext *ctx, AVFilterLink *inlink)
}
if (s->type == TIME_DOMAIN) {
memcpy(s->data_ir[0], data_ir_l, sizeof(float) * nb_irs * FFALIGN(ir_len, 16));
memcpy(s->data_ir[1], data_ir_r, sizeof(float) * nb_irs * FFALIGN(ir_len, 16));
memcpy(s->data_ir[0], data_ir_l, sizeof(float) * nb_irs * s->air_len);
memcpy(s->data_ir[1], data_ir_r, sizeof(float) * nb_irs * s->air_len);
} else {
s->data_hrtf[0] = av_calloc(n_fft * s->nb_irs, sizeof(FFTComplex));
s->data_hrtf[1] = av_calloc(n_fft * s->nb_irs, sizeof(FFTComplex));