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more work on audioconvert

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Implement audioconvert as a complex element of fmtconver,
channelmix and resample.
Make copying resample just to test.
Plug the converter into pw_stream.
This commit is contained in:
Wim Taymans 2018-04-10 15:54:29 +02:00
parent de36330917
commit b3b47d3fe9
9 changed files with 1454 additions and 542 deletions
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16
spa/plugins/audioconvert/channelmix-ops.c
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@ -59,12 +59,12 @@ channelmix_f32_1_2(void *data, int n_dst, void *dst[n_dst],
{
int n, n_samples;
float **d = (float **) dst;
float **s = (float **) src;
const float *s = src[0];
n_samples = n_bytes / sizeof(float);
for (n = 0; n < n_samples; n++) {
d[0][n] = s[0][n];
d[1][n] = s[0][n];
d[0][n] = s[n];
d[1][n] = s[n];
}
}
@ -73,12 +73,12 @@ channelmix_f32_2_1(void *data, int n_dst, void *dst[n_dst],
int n_src, const void *src[n_src], void *matrix, int n_bytes)
{
int n, n_samples;
float **d = (float **) dst;
float *d = dst[0];
float **s = (float **) src;
n_samples = n_bytes / sizeof(float);
for (n = 0; n < n_samples; n++)
d[0][n] = (s[0][n] + s[1][n]) * 0.5f;
d[n] = (s[0][n] + s[1][n]) * 0.5f;
}
typedef void (*channelmix_func_t) (void *data, int n_dst, void *dst[n_dst],
@ -95,6 +95,7 @@ static const struct channelmix_info {
uint32_t flags;
} channelmix_table[] =
{
{ -2, -2, channelmix_copy, CHANNELMIX_INFO_FLAG_NO_MATRIX },
{ 1, 2, channelmix_f32_1_2, CHANNELMIX_INFO_FLAG_NO_MATRIX },
{ 2, 1, channelmix_f32_2_1, CHANNELMIX_INFO_FLAG_NO_MATRIX },
{ -1, -1, channelmix_f32_n_m, 0 },
@ -106,7 +107,10 @@ static const struct channelmix_info *find_channelmix_info(uint32_t src_chan, uin
{
int i;
for (i = 0; i < SPA_N_ELEMENTS(channelmix_table); i++) {
if (src_chan == dst_chan)
return &channelmix_table[0];
for (i = 1; i < SPA_N_ELEMENTS(channelmix_table); i++) {
if (MATCH_CHAN(channelmix_table[i].src_chan, src_chan) &&
MATCH_CHAN(channelmix_table[i].dst_chan, dst_chan))
return &channelmix_table[i];