mirror/miniaudio
1
0
Fork 0
mirror of https://github.com/mackron/miniaudio.git synced 2026-04-22 00:06:59 +02:00
Code Issues Packages Projects Releases Wiki Activity

SDL: Add support for retrieving detailed device info.

Browse Source
This commit is contained in:
David Reid
2018-04-25 10:33:05 +10:00
parent 9de444c59c
commit edeadf1770
1 changed files with 60 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mini_al.h
+60 -1
View File
@@ -14113,7 +14113,7 @@ mal_result mal_context_enumerate_devices__sdl(mal_context* pContext, mal_enum_de
} else
#endif
{
// SDL1 only uses default devices.
// SDL1 only uses default devices, and does not support capture.
mal_bool32 cbResult = MAL_TRUE;
// Playback.
@@ -14124,6 +14124,7 @@ mal_result mal_context_enumerate_devices__sdl(mal_context* pContext, mal_enum_de
cbResult = callback(pContext, mal_device_type_playback, &deviceInfo, pUserData);
}
#if 0 // No capture with SDL1.
// Capture.
if (cbResult) {
mal_device_info deviceInfo;
@@ -14131,6 +14132,7 @@ mal_result mal_context_enumerate_devices__sdl(mal_context* pContext, mal_enum_de
mal_strncpy_s(deviceInfo.name, sizeof(deviceInfo.name), MAL_DEFAULT_CAPTURE_DEVICE_NAME, (size_t)-1);
cbResult = callback(pContext, mal_device_type_capture, &deviceInfo, pUserData);
}
#endif
}
return MAL_SUCCESS;
@@ -14168,6 +14170,63 @@ mal_result mal_context_get_device_info__sdl(mal_context* pContext, mal_device_ty
}
}
// To get an accurate idea on the backend's native format we need to open the device. Not ideal, but it's the only way. An
// alternative to this is to report all channel counts, sample rates and formats, but that doesn't offer a good representation
// of the device's _actual_ ideal format.
MAL_SDL_AudioSpec desiredSpec, obtainedSpec;
mal_zero_memory(&desiredSpec, sizeof(desiredSpec));
#ifndef MAL_USE_SDL_1
if (!pContext->sdl.usingSDL1) {
int isCapture = (deviceType == mal_device_type_playback) ? 0 : 1;
const char* pDeviceName = NULL;
if (pDeviceID != NULL) {
pDeviceName = ((MAL_PFN_SDL_GetAudioDeviceName)pContext->sdl.SDL_GetAudioDeviceName)(pDeviceID->sdl, isCapture);
}
MAL_SDL_AudioDeviceID tempDeviceID = ((MAL_PFN_SDL_OpenAudioDevice)pContext->sdl.SDL_OpenAudioDevice)(pDeviceName, isCapture, &desiredSpec, &obtainedSpec, MAL_SDL_AUDIO_ALLOW_ANY_CHANGE);
if (tempDeviceID == 0) {
return mal_context_post_error(pContext, NULL, "Failed to open SDL device.", MAL_FAILED_TO_OPEN_BACKEND_DEVICE);
}
((MAL_PFN_SDL_CloseAudioDevice)pContext->sdl.SDL_CloseAudioDevice)(tempDeviceID);
} else
#endif
{
// SDL1 uses default devices.
(void)pDeviceID;
// SDL1 only supports playback as far as I can tell.
if (deviceType != mal_device_type_playback) {
return MAL_NO_DEVICE;
}
MAL_SDL_AudioDeviceID tempDeviceID = ((MAL_PFN_SDL_OpenAudio)pContext->sdl.SDL_OpenAudio)(&desiredSpec, &obtainedSpec);
if (tempDeviceID != 0) {
return mal_context_post_error(pContext, NULL, "Failed to open SDL device.", MAL_FAILED_TO_OPEN_BACKEND_DEVICE);
}
((MAL_PFN_SDL_CloseAudio)pContext->sdl.SDL_CloseAudio)();
}
pDeviceInfo->minChannels = obtainedSpec.channels;
pDeviceInfo->maxChannels = obtainedSpec.channels;
pDeviceInfo->minSampleRate = obtainedSpec.freq;
pDeviceInfo->maxSampleRate = obtainedSpec.freq;
pDeviceInfo->formatCount = 1;
if (obtainedSpec.format == MAL_AUDIO_U8) {
pDeviceInfo->formats[0] = mal_format_u8;
} else if (obtainedSpec.format == MAL_AUDIO_S16) {
pDeviceInfo->formats[0] = mal_format_s16;
} else if (obtainedSpec.format == MAL_AUDIO_S32) {
pDeviceInfo->formats[0] = mal_format_s32;
} else if (obtainedSpec.format == MAL_AUDIO_F32) {
pDeviceInfo->formats[0] = mal_format_f32;
} else {
return MAL_FORMAT_NOT_SUPPORTED;
}
return MAL_SUCCESS;
}