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Rest of the owl

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This commit is contained in:
James Rowe 2019-03-04 22:47:24 -07:00
parent 5c9e327ff3
commit c669aa8d55
7 changed files with 237 additions and 75 deletions
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60
src/audio_core/cubeb_input.cpp
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@ -10,21 +10,12 @@
namespace AudioCore {
struct CubebInput::Impl {
// unsigned int sample_rate = 0;
// std::vector<std::string> device_list;
cubeb* ctx = nullptr;
cubeb_stream* stream = nullptr;
bool looped_buffer;
u8* buffer;
u32 buffer_size;
u32 initial_offset;
u32 offset;
u32 audio_buffer_size;
std::unique_ptr<Frontend::Mic::SampleQueue> sample_queue{};
u8 sample_size_in_bytes = 0;
void UpdateOffset(int new_offset, Impl* impl);
void ProcessSample(const u8* data, int current_sample_index, Impl* impl);
static long DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
void* output_buffer, long num_frames);
static void StateCallback(cubeb_stream* stream, void* user_data, cubeb_state state);
@ -35,6 +26,7 @@ CubebInput::CubebInput() : impl(std::make_unique<Impl>()) {
LOG_ERROR(Audio, "cubeb_init failed! Mic will not work properly");
return;
}
impl->sample_queue = std::make_unique<Frontend::Mic::SampleQueue>();
}
CubebInput::~CubebInput() {
@ -60,11 +52,10 @@ void CubebInput::StartSampling(Frontend::Mic::Parameters params) {
"Application requested unsupported 8 bit pcm format. Falling back to 16 bits");
}
impl->buffer = backing_memory;
impl->buffer_size = backing_memory_size;
impl->audio_buffer_size = params.buffer_size;
impl->offset = params.buffer_offset;
impl->looped_buffer = params.buffer_loop;
parameters = params;
is_sampling = true;
impl->sample_size_in_bytes = 2;
cubeb_devid input_device = nullptr;
cubeb_stream_params input_params;
@ -92,6 +83,7 @@ void CubebInput::StopSampling() {
if (impl->stream) {
cubeb_stream_stop(impl->stream);
}
is_sampling = false;
}
void CubebInput::AdjustSampleRate(u32 sample_rate) {
@ -99,47 +91,29 @@ void CubebInput::AdjustSampleRate(u32 sample_rate) {
LOG_ERROR(Audio, "AdjustSampleRate unimplemented!");
}
void CubebInput::Impl::UpdateOffset(int new_offset, Impl* impl) {
impl->offset = new_offset;
std::memcpy(impl->buffer + impl->audio_buffer_size, reinterpret_cast<u8*>(&impl->offset),
sizeof(u32));
}
void CubebInput::Impl::ProcessSample(const u8* data, int current_sample_index, Impl* impl) {
if (impl->offset >= impl->audio_buffer_size) {
if (impl->looped_buffer)
UpdateOffset(impl->initial_offset, impl);
else
return;
Frontend::Mic::Samples CubebInput::Read() {
Frontend::Mic::Samples samples{};
Frontend::Mic::Samples queue;
while (impl->sample_queue->Pop(queue)) {
samples.insert(samples.end(), queue.begin(), queue.end());
}
std::memcpy(impl->buffer + impl->offset, data + current_sample_index * sizeof(u16),
sizeof(u16));
UpdateOffset(impl->offset + sizeof(u16), impl);
return samples;
}
long CubebInput::Impl::DataCallback(cubeb_stream* stream, void* user_data, const void* input_buffer,
void* output_buffer, long num_frames) {
Impl* impl = static_cast<Impl*>(user_data);
const u8* data = reinterpret_cast<const u8*>(input_buffer);
u8 const* data = reinterpret_cast<u8 const*>(input_buffer);
if (!impl) {
return 0;
}
if (!impl->buffer) {
return 0;
}
for (int i = 0; i < num_frames; i++) {
impl->ProcessSample(data, i, impl);
}
impl->sample_queue->Push(std::vector(data, data + num_frames * impl->sample_size_in_bytes));
// returning less than num_frames here signals cubeb to stop sampling
// return total_written;
// TODO:: Correct this
return num_frames;
} // namespace AudioCore
}
void CubebInput::Impl::StateCallback(cubeb_stream* stream, void* user_data, cubeb_state state) {}