mirror of
https://github.com/yuzu-emu/yuzu.git
synced 2024-08-27 21:57:19 +02:00
Merge pull request #3458 from FearlessTobi/voice-issues
cubeb_sink: Don't discard other channels when performing downmixing
This commit is contained in:
commit
503ebe9b96
@ -8,6 +8,7 @@
|
||||
#include "audio_core/cubeb_sink.h"
|
||||
#include "audio_core/stream.h"
|
||||
#include "audio_core/time_stretch.h"
|
||||
#include "common/assert.h"
|
||||
#include "common/logging/log.h"
|
||||
#include "common/ring_buffer.h"
|
||||
#include "core/settings.h"
|
||||
@ -65,12 +66,25 @@ public:
|
||||
void EnqueueSamples(u32 source_num_channels, const std::vector<s16>& samples) override {
|
||||
if (source_num_channels > num_channels) {
|
||||
// Downsample 6 channels to 2
|
||||
ASSERT_MSG(source_num_channels == 6, "Channel count must be 6");
|
||||
|
||||
std::vector<s16> buf;
|
||||
buf.reserve(samples.size() * num_channels / source_num_channels);
|
||||
for (std::size_t i = 0; i < samples.size(); i += source_num_channels) {
|
||||
for (std::size_t ch = 0; ch < num_channels; ch++) {
|
||||
buf.push_back(samples[i + ch]);
|
||||
}
|
||||
// Downmixing implementation taken from the ATSC standard
|
||||
const s16 left{samples[i + 0]};
|
||||
const s16 right{samples[i + 1]};
|
||||
const s16 center{samples[i + 2]};
|
||||
const s16 surround_left{samples[i + 4]};
|
||||
const s16 surround_right{samples[i + 5]};
|
||||
// Not used in the ATSC reference implementation
|
||||
[[maybe_unused]] const s16 low_frequency_effects { samples[i + 3] };
|
||||
|
||||
constexpr s32 clev{707}; // center mixing level coefficient
|
||||
constexpr s32 slev{707}; // surround mixing level coefficient
|
||||
|
||||
buf.push_back(left + (clev * center / 1000) + (slev * surround_left / 1000));
|
||||
buf.push_back(right + (clev * center / 1000) + (slev * surround_right / 1000));
|
||||
}
|
||||
queue.Push(buf);
|
||||
return;
|
||||
|
Loading…
Reference in New Issue
Block a user