static int put_output (char *buf, int buf_len, struct mad_pcm *pcm,
struct mad_header *header)
{
unsigned int nsamples;
mad_fixed_t const *left_ch, *right_ch;
int olen;
nsamples = pcm->length;
left_ch = pcm->samples[0];
right_ch = pcm->samples[1];
olen = nsamples * MAD_NCHANNELS (header) * 4;
if (olen > buf_len) {
logit ("PCM buffer to small!");
return 0;
}
while (nsamples--) {
long sample0 = round_sample (*left_ch++);
buf[0] = 0;
buf[1] = sample0;
buf[2] = sample0 >> 8;
buf[3] = sample0 >> 16;
buf += 4;
if (MAD_NCHANNELS(header) == 2) {
long sample1;
sample1 = round_sample (*right_ch++);
buf[0] = 0;
buf[1] = sample1;
buf[2] = sample1 >> 8;
buf[3] = sample1 >> 16;
buf += 4;
}
}
void foo(int *dither_state, int *samples)
{
int16_t *synth_buf;
const int16_t *w, *p;
int sum;
sum = *dither_state;
p = synth_buf + 16;
SUM8(sum, +=, w, p);
p = synth_buf + 48;
SUM8(sum, -=, w + 32, p);
*samples = round_sample(&sum);
}
