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-rw-r--r--src/pulsecore/resampler.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/src/pulsecore/resampler.c b/src/pulsecore/resampler.c
index 334c24b17..cbe5e522c 100644
--- a/src/pulsecore/resampler.c
+++ b/src/pulsecore/resampler.c
@@ -114,7 +114,7 @@ static int peaks_init(pa_resampler*r);
static int libsamplerate_init(pa_resampler*r);
#endif
-static void calc_map_table(pa_resampler *r);
+static void calc_map_table(const pa_resampler *r, pa_remap_t *m);
static int (* const init_table[])(pa_resampler*r) = {
#ifdef HAVE_LIBSAMPLERATE
@@ -396,7 +396,10 @@ pa_resampler* pa_resampler_new(
r->i_fz = pa_frame_size(a);
r->o_fz = pa_frame_size(b);
- calc_map_table(r);
+ /* compute channel remap table if needed */
+ if ((r->map_required = (r->i_ss.channels != r->o_ss.channels || (!(r->flags & PA_RESAMPLER_NO_REMAP) &&
+ !pa_channel_map_equal(&r->i_cm, &r->o_cm)))))
+ calc_map_table(r, &r->remap);
r->work_format = pa_resampler_choose_work_format(method, a->format, b->format, r->map_required);
r->w_sz = pa_sample_size_of_format(r->work_format);
@@ -785,21 +788,16 @@ static int front_rear_side(pa_channel_position_t p) {
return ON_OTHER;
}
-static void calc_map_table(pa_resampler *r) {
+static void calc_map_table(const pa_resampler *r, pa_remap_t *m) {
unsigned oc, ic;
unsigned n_oc, n_ic;
bool ic_connected[PA_CHANNELS_MAX];
bool remix;
pa_strbuf *s;
char *t;
- pa_remap_t *m;
pa_assert(r);
-
- if (!(r->map_required = (r->i_ss.channels != r->o_ss.channels || (!(r->flags & PA_RESAMPLER_NO_REMAP) && !pa_channel_map_equal(&r->i_cm, &r->o_cm)))))
- return;
-
- m = &r->remap;
+ pa_assert(m);
n_oc = r->o_ss.channels;
n_ic = r->i_ss.channels;