static int apply_window_and_mdct(vorbis_enc_context *venc,
float **audio, int samples)
{
- int i, channel;
+ int channel;
const float * win = venc->win[0];
int window_len = 1 << (venc->log2_blocksize[0] - 1);
float n = (float)(1 << venc->log2_blocksize[0]) / 4.0;
- // FIXME use dsp
+ AVFloatDSPContext *fdsp = venc->fdsp;
if (!venc->have_saved && !samples)
return 0;
if (samples) {
for (channel = 0; channel < venc->channels; channel++) {
- float * offset = venc->samples + channel*window_len*2 + window_len;
- for (i = 0; i < samples; i++)
- offset[i] = audio[channel][i] / n * win[window_len - i - 1];
+ float *offset = venc->samples + channel * window_len * 2 + window_len;
+
+ fdsp->vector_fmul_reverse(offset, audio[channel], win, samples);
+ fdsp->vector_fmul_scalar(offset, offset, 1/n, samples);
}
} else {
for (channel = 0; channel < venc->channels; channel++)
if (samples) {
for (channel = 0; channel < venc->channels; channel++) {
float *offset = venc->saved + channel * window_len;
- for (i = 0; i < samples; i++)
- offset[i] = audio[channel][i] / n * win[i];
+
+ fdsp->vector_fmul(offset, audio[channel], win, samples);
+ fdsp->vector_fmul_scalar(offset, offset, 1/n, samples);
}
venc->have_saved = 1;
} else {