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more refactoring, audio loopback kinda working

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Green Sky
2024-05-03 13:59:50 +02:00
parent b3e5e4c950
commit 3a98e10007
5 changed files with 163 additions and 39 deletions
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42
src/content/sdl_audio_frame_stream2.hpp
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@ -10,12 +10,14 @@
#include <vector>
#include <thread>
// we dont have to multiplex ourself, because sdl streams and virtual devices already do this, but we do it anyway
using SDLAudioInputFrameStream2Multiplexer = QueuedFrameStream2Multiplexer<AudioFrame>;
using SDLAudioInputFrameStream2 = SDLAudioInputFrameStream2Multiplexer::reader_type_t; // just use the default for now
// we dont have to multicast ourself, because sdl streams and virtual devices already do this, but we do it anyway
using AudioFrameStream2MultiStream = FrameStream2MultiStream<AudioFrame>;
using AudioFrameStream2 = AudioFrameStream2MultiStream::sub_stream_type_t; // just use the default for now
// object components?
struct SDLAudioInputDevice : protected SDLAudioInputFrameStream2Multiplexer {
// source
struct SDLAudioInputDeviceDefault : protected AudioFrameStream2MultiStream {
std::unique_ptr<SDL_AudioStream, decltype(&SDL_DestroyAudioStream)> _stream;
std::atomic<bool> _thread_should_quit {false};
@ -23,15 +25,37 @@ struct SDLAudioInputDevice : protected SDLAudioInputFrameStream2Multiplexer {
// construct source and start thread
// TODO: optimize so the thread is not always running
SDLAudioInputDevice(void);
SDLAudioInputDeviceDefault(void);
// stops the thread and closes the device?
~SDLAudioInputDevice(void);
~SDLAudioInputDeviceDefault(void);
using SDLAudioInputFrameStream2Multiplexer::aquireReader;
using SDLAudioInputFrameStream2Multiplexer::releaseReader;
using AudioFrameStream2MultiStream::aquireSubStream;
using AudioFrameStream2MultiStream::releaseSubStream;
};
struct SDLAudioOutputDevice {
// sink
struct SDLAudioOutputDeviceDefaultInstance : protected AudioFrameStream2I {
std::unique_ptr<SDL_AudioStream, decltype(&SDL_DestroyAudioStream)> _stream;
uint32_t _last_sample_rate {48'000};
size_t _last_channels {0};
SDL_AudioFormat _last_format {0};
SDLAudioOutputDeviceDefaultInstance(void);
SDLAudioOutputDeviceDefaultInstance(SDLAudioOutputDeviceDefaultInstance&& other);
~SDLAudioOutputDeviceDefaultInstance(void);
int32_t size(void) override;
std::optional<AudioFrame> pop(void) override;
bool push(const AudioFrame& value) override;
};
// constructs entirely new streams, since sdl handles sync and mixing for us (or should)
struct SDLAudioOutputDeviceDefaultFactory {
// TODO: pause device?
SDLAudioOutputDeviceDefaultInstance create(void);
};