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Migrate the WASAPI backend over to the new callback system.

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This includes changes to callbacks used by custom backends. It adds a
`pConfig` parameter to both onContextInit and onDeviceInit. This allows
custom backends to specify custom config properties.
This commit is contained in:
David Reid
2020-11-15 15:41:15 +10:00
parent 561e21face
commit db0442fb78
2 changed files with 323 additions and 280 deletions
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examples/custom_backend.c
+11 -9
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@@ -408,7 +408,7 @@ static ma_result ma_device_init_internal__sdl(ma_device_ex* pDeviceEx, ma_device
return MA_SUCCESS;
}
static ma_result ma_device_init__sdl(ma_device* pDevice, ma_device_type deviceType, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
static ma_result ma_device_init__sdl(ma_device* pDevice, const ma_device_config* pConfig, ma_device_descriptor* pDescriptorPlayback, ma_device_descriptor* pDescriptorCapture)
{
ma_device_ex* pDeviceEx = (ma_device_ex*)pDevice;
ma_context_ex* pContextEx = (ma_context_ex*)pDevice->pContext;
@@ -417,21 +417,21 @@ static ma_result ma_device_init__sdl(ma_device* pDevice, ma_device_type deviceTy
MA_ASSERT(pDevice != NULL);
/* SDL does not support loopback mode, so must return MA_DEVICE_TYPE_NOT_SUPPORTED if it's requested. */
if (deviceType == ma_device_type_loopback) {
if (pConfig->deviceType == ma_device_type_loopback) {
return MA_DEVICE_TYPE_NOT_SUPPORTED;
}
if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex) {
if (pConfig->deviceType == ma_device_type_capture || pConfig->deviceType == ma_device_type_duplex) {
result = ma_device_init_internal__sdl(pDeviceEx, ma_device_type_capture, pDescriptorCapture);
if (result != MA_SUCCESS) {
return result;
}
}
if (deviceType == ma_device_type_playback || deviceType == ma_device_type_duplex) {
if (pConfig->deviceType == ma_device_type_playback || pConfig->deviceType == ma_device_type_duplex) {
result = ma_device_init_internal__sdl(pDeviceEx, ma_device_type_playback, pDescriptorPlayback);
if (result != MA_SUCCESS) {
if (deviceType == ma_device_type_duplex) {
if (pConfig->deviceType == ma_device_type_duplex) {
((MA_PFN_SDL_CloseAudioDevice)pContextEx->sdl.SDL_CloseAudioDevice)(pDeviceEx->sdl.deviceIDCapture);
}
@@ -511,7 +511,7 @@ static ma_result ma_context_uninit__sdl(ma_context* pContext)
return MA_SUCCESS;
}
static ma_result ma_context_init__sdl(ma_context* pContext, ma_backend_callbacks* pCallbacks)
static ma_result ma_context_init__sdl(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
ma_context_ex* pContextEx = (ma_context_ex*)pContext;
int resultSDL;
@@ -531,6 +531,8 @@ static ma_result ma_context_init__sdl(ma_context* pContext, ma_backend_callbacks
MA_ASSERT(pContext != NULL);
(void)pConfig;
/* Check if we have SDL2 installed somewhere. If not it's not usable and we need to abort. */
for (iName = 0; iName < ma_countof(pSDLNames); iName += 1) {
pContextEx->sdl.hSDL = ma_dlopen(pContext, pSDLNames[iName]);
@@ -592,7 +594,7 @@ you want to handle backend selection.
This is used as the onContextInit() callback in the context config.
*/
static ma_result ma_context_init__custom_loader(ma_context* pContext, ma_backend_callbacks* pCallbacks)
static ma_result ma_context_init__custom_loader(ma_context* pContext, const ma_context_config* pConfig, ma_backend_callbacks* pCallbacks)
{
ma_result result = MA_NO_BACKEND;
@@ -603,7 +605,7 @@ static ma_result ma_context_init__custom_loader(ma_context* pContext, ma_backend
/* SDL. */
#if !defined(MA_NO_SDL)
if (result != MA_SUCCESS) {
result = ma_context_init__sdl(pContext, pCallbacks);
result = ma_context_init__sdl(pContext, pConfig, pCallbacks);
}
#endif
@@ -681,7 +683,7 @@ int main(int argc, char** argv)
ma_waveform_init(&sineWaveConfig, &sineWave);
/* The device is created exactly as per normal. */
deviceConfig = ma_device_config_init(ma_device_type_duplex);
deviceConfig = ma_device_config_init(ma_device_type_playback);
deviceConfig.playback.format = DEVICE_FORMAT;
deviceConfig.playback.channels = DEVICE_CHANNELS;
deviceConfig.capture.format = DEVICE_FORMAT;