- pa_assert(length > 0);
-
- n = fill_mix_info(s, &length1st, info, MAX_MIX_CHANNELS);
-
- if (n == 0) {
- pa_silence_memchunk_get(&s->core->silence_cache,
- s->core->mempool,
- result,
- &s->sample_spec,
- length1st);
- } else if (n == 1) {
- pa_cvolume volume;
-
- *result = info[0].chunk;
- pa_memblock_ref(result->memblock);
-
- if (result->length > length)
- result->length = length;
-
- pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume);
-
- if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&volume)) {
- if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) {
- pa_memblock_unref(result->memblock);
- pa_silence_memchunk_get(&s->core->silence_cache,
- s->core->mempool,
- result,
- &s->sample_spec,
- result->length);
- } else {
- pa_memchunk_make_writable(result, length);
- pa_volume_memchunk(result, &s->sample_spec, &volume);
- }
- }
- } else {
- void *ptr;
-
- result->index = 0;
- result->memblock = pa_memblock_new(s->core->mempool, length);
-
- ptr = pa_memblock_acquire(result->memblock);
-
- result->length = pa_mix(info, n,
- (uint8_t*) ptr + result->index, length1st,
- &s->sample_spec,
- &s->thread_info.soft_volume,
- s->thread_info.soft_muted);
-
- pa_memblock_release(result->memblock);
- }