Green-Sky/tomato
Green-Sky/tomato
1
0
Fork 1
Code Issues Pull Requests 1 Actions Packages Projects Releases 1 Wiki Activity

make input device only open with >= 1 connection

Browse Source
This commit is contained in:
Green Sky 2024-09-27 09:51:36 +02:00
parent 5b3e0e2a0b
commit 7ebbad2b94
No known key found for this signature in database
2 changed files with 36 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
src/content/sdl_audio_frame_stream2.cpp
View File

@ -74,16 +74,8 @@ struct SDLAudioStreamReader : public AudioFrameStream2I {
SDLAudioInputDevice::SDLAudioInputDevice(void) : SDLAudioInputDevice(SDL_AUDIO_DEVICE_DEFAULT_RECORDING) {
}
SDLAudioInputDevice::SDLAudioInputDevice(SDL_AudioDeviceID device_id) {
// this spec is more like a hint to the hardware
SDL_AudioSpec spec {
SDL_AUDIO_S16,
1, // configurable?
48'000,
};
_device_id = SDL_OpenAudioDevice(device_id, &spec);
if (_device_id == 0) {
SDLAudioInputDevice::SDLAudioInputDevice(SDL_AudioDeviceID conf_device_id) : _configured_device_id(conf_device_id) {
if (_configured_device_id == 0) {
// TODO: proper error handling
throw int(1);
}
@ -92,29 +84,48 @@ SDLAudioInputDevice::SDLAudioInputDevice(SDL_AudioDeviceID device_id) {
SDLAudioInputDevice::~SDLAudioInputDevice(void) {
_streams.clear();
SDL_CloseAudioDevice(_device_id);
if (_virtual_device_id != 0) {
SDL_CloseAudioDevice(_virtual_device_id);
_virtual_device_id = 0;
}
}
std::shared_ptr<FrameStream2I<AudioFrame>> SDLAudioInputDevice::subscribe(void) {
if (_virtual_device_id == 0) {
// first stream, open device
// this spec is more like a hint to the hardware
SDL_AudioSpec spec {
SDL_AUDIO_S16,
1,
1, // TODO: conf
48'000,
};
_virtual_device_id = SDL_OpenAudioDevice(_configured_device_id, &spec);
}
if (_virtual_device_id == 0) {
std::cerr << "SDLAID error: failed opening device " << _configured_device_id << "\n";
return nullptr;
}
SDL_AudioSpec spec {
SDL_AUDIO_S16,
1, // TODO: conf
48'000,
};
SDL_AudioSpec device_spec {
SDL_AUDIO_S16,
1,
1, // TODO: conf
48'000,
};
// TODO: error check
SDL_GetAudioDeviceFormat(_device_id, &device_spec, nullptr);
SDL_GetAudioDeviceFormat(_virtual_device_id, &device_spec, nullptr);
// error check
auto* sdl_stream = SDL_CreateAudioStream(&device_spec, &spec);
// error check
SDL_BindAudioStream(_device_id, sdl_stream);
SDL_BindAudioStream(_virtual_device_id, sdl_stream);
auto new_stream = std::make_shared<SDLAudioStreamReader>();
// TODO: move to ctr
@ -132,6 +143,13 @@ bool SDLAudioInputDevice::unsubscribe(const std::shared_ptr<FrameStream2I<AudioF
for (auto it = _streams.cbegin(); it != _streams.cend(); it++) {
if (*it == sub) {
_streams.erase(it);
if (_streams.empty()) {
// last stream, close
// TODO: make sure no shared ptr still exists???
SDL_CloseAudioDevice(_virtual_device_id);
std::cout << "SDLAID: closing device " << _virtual_device_id << " (" << _configured_device_id << ")\n";
_virtual_device_id = 0;
}
return true;
}
}

5
src/content/sdl_audio_frame_stream2.hpp
View File

@ -17,12 +17,13 @@ struct SDLAudioInputDevice : public FrameStream2SourceI<AudioFrame> {
// held by instances
using sdl_stream_type = std::unique_ptr<SDL_AudioStream, decltype(&SDL_DestroyAudioStream)>;
SDL_AudioDeviceID _device_id {0};
SDL_AudioDeviceID _configured_device_id {0};
SDL_AudioDeviceID _virtual_device_id {0};
std::vector<std::shared_ptr<FrameStream2I<AudioFrame>>> _streams;
SDLAudioInputDevice(void);
SDLAudioInputDevice(SDL_AudioDeviceID device_id);
SDLAudioInputDevice(SDL_AudioDeviceID conf_device_id);
~SDLAudioInputDevice(void);
std::shared_ptr<FrameStream2I<AudioFrame>> subscribe(void) override;