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authorMerryMage <MerryMage@users.noreply.github.com>2018-09-08 17:15:40 +0200
committerMerryMage <MerryMage@users.noreply.github.com>2018-09-08 19:56:38 +0200
commit7e697ab7ff729aee3d88eb18cd130132786444ac (patch)
tree544ad3738585348004b85b77171a92f1ea9ae2ff
parentcubeb_sink: Use RingBuffer (diff)
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-rw-r--r--src/audio_core/cubeb_sink.cpp20
1 files changed, 15 insertions, 5 deletions
diff --git a/src/audio_core/cubeb_sink.cpp b/src/audio_core/cubeb_sink.cpp
index 552bcd051..3c129122f 100644
--- a/src/audio_core/cubeb_sink.cpp
+++ b/src/audio_core/cubeb_sink.cpp
@@ -89,6 +89,10 @@ public:
return num_channels;
}
+ u32 GetNumChannelsInQueue() const {
+ return num_channels == 1 ? 1 : 2;
+ }
+
private:
std::vector<std::string> device_list;
@@ -98,6 +102,7 @@ private:
bool is_6_channel{};
Common::RingBuffer<s16, 0x10000> queue;
+ std::array<s16, 2> last_frame;
static long DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
void* output_buffer, long num_frames);
@@ -156,13 +161,18 @@ long CubebSinkStream::DataCallback(cubeb_stream* stream, void* user_data, const
return {};
}
- const size_t max_samples_to_write = impl->GetNumChannels() * num_frames;
+ const size_t num_channels = impl->GetNumChannelsInQueue();
+ const size_t max_samples_to_write = num_channels * num_frames;
const size_t samples_written = impl->queue.Pop(buffer, max_samples_to_write);
- if (samples_written < max_samples_to_write) {
- // Fill the rest of the frames with silence
- std::memset(buffer + samples_written * sizeof(s16), 0,
- (max_samples_to_write - samples_written) * sizeof(s16));
+ if (samples_written >= num_channels) {
+ std::memcpy(&impl->last_frame[0], buffer + (samples_written - num_channels) * sizeof(s16),
+ num_channels * sizeof(s16));
+ }
+
+ // Fill the rest of the frames with last_frame
+ for (size_t i = samples_written; i < max_samples_to_write; i += num_channels) {
+ std::memcpy(buffer + i * sizeof(s16), &impl->last_frame[0], num_channels * sizeof(s16));
}
return num_frames;