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Audio hotplug fixes for winmm and XAudio2 backends.

This commit is contained in:
Ryan C. Gordon 2015-03-20 11:11:44 -04:00
parent c1091f32fb
commit 182a7768e1
3 changed files with 16 additions and 5 deletions
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2
src/audio/SDL_audio.c
View File

@ -299,7 +299,7 @@ add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices,
return -1;
}
SDL_assert(handle != NULL);
SDL_assert(handle != NULL); /* we reserve NULL, audio backends can't use it. */
item->handle = handle;
SDL_strlcpy(item->name, name, size - sizeof (SDL_AudioDeviceItem));

5
src/audio/winmm/SDL_winmm.c
View File

@ -46,7 +46,7 @@ static void DetectWave##typ##Devs(void) { \
if (wave##typ##GetDevCaps(i,&caps,sizeof(caps))==MMSYSERR_NOERROR) { \
char *name = WIN_StringToUTF8(caps.szPname); \
if (name != NULL) { \
SDL_AddAudioDevice((int) iscapture, name, (void *) ((size_t) i)); \
SDL_AddAudioDevice((int) iscapture, name, (void *) ((size_t) i+1)); \
SDL_free(name); \
} \
} \
@ -228,7 +228,8 @@ WINMM_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
UINT i;
if (handle != NULL) { /* specific device requested? */
const size_t val = (size_t) handle;
/* -1 because we increment the original value to avoid NULL. */
const size_t val = ((size_t) handle) - 1;
devId = (UINT) val;
}

14
src/audio/xaudio2/SDL_xaudio2.c
View File

@ -146,7 +146,7 @@ XAUDIO2_DetectDevices(void)
if (IXAudio2_GetDeviceDetails(ixa2, i, &details) == S_OK) {
char *str = WIN_StringToUTF8(details.DisplayName);
if (str != NULL) {
SDL_AddAudioDevice(SDL_FALSE, str, (void *) ((size_t) i));
SDL_AddAudioDevice(SDL_FALSE, str, (void *) ((size_t) i+1));
SDL_free(str); /* SDL_AddAudioDevice made a copy of the string. */
}
}
@ -297,7 +297,7 @@ XAUDIO2_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
#if defined(SDL_XAUDIO2_WIN8)
LPCWSTR devId = NULL;
#else
UINT32 devId = (UINT32) ((size_t) handle); /* 0 == system default device. */
UINT32 devId = 0; /* 0 == system default device. */
#endif
static IXAudio2VoiceCallbackVtbl callbacks_vtable = {
@ -312,6 +312,16 @@ XAUDIO2_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
static IXAudio2VoiceCallback callbacks = { &callbacks_vtable };
#if defined(SDL_XAUDIO2_WIN8)
/* !!! FIXME: hook up hotplugging. */
#else
if (handle != NULL) { /* specific device requested? */
/* -1 because we increment the original value to avoid NULL. */
const size_t val = ((size_t) handle) - 1;
devId = (UINT32) val;
}
#endif
if (XAudio2Create(&ixa2, 0, XAUDIO2_DEFAULT_PROCESSOR) != S_OK) {
return SDL_SetError("XAudio2: XAudio2Create() failed at open.");
}