mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-07 13:30:03 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

remap: Add helper function to setup channel arrangement information

Browse source 
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
This commit is contained in:
Peter Meerwald 2014-04-16 15:06:29 +02:00 • committed by Peter Meerwald
parent 647d491653
commit 3b5868a274
2 changed files with 39 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

29
src/pulsecore/remap.c
View file

@ -137,6 +137,35 @@ static void remap_channels_matrix_float32ne_c(pa_remap_t *m, void *dst, const vo
}
}
bool pa_setup_remap_arrange(const pa_remap_t *m, int8_t arrange[PA_CHANNELS_MAX]) {
unsigned ic, oc;
unsigned n_ic, n_oc;
pa_assert(m);
n_ic = m->i_ss.channels;
n_oc = m->o_ss.channels;
for (oc = 0; oc < n_oc; oc++) {
arrange[oc] = -1;
for (ic = 0; ic < n_ic; ic++) {
int32_t vol = m->map_table_i[oc][ic];
/* input channel is not used */
if (vol == 0)
continue;
/* if mixing this channel, we cannot just rearrange */
if (vol != 0x10000 || arrange[oc] >= 0)
return false;
arrange[oc] = ic;
}
}
return true;
}
/* set the function that will execute the remapping based on the matrices */
static void init_remap_c(pa_remap_t *m) {
unsigned n_oc, n_ic;