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WinMM: Optimize some memory allocations.

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This commit is contained in:
David Reid
2026-01-17 18:50:21 +10:00
parent 251e0e59e4
commit f794044d0a
1 changed files with 19 additions and 8 deletions
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miniaudio.h
+19 -8
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@@ -27278,6 +27278,8 @@ static ma_result ma_device_init__winmm(ma_device* pDevice, const void* pDeviceBa
The heap allocated data is allocated like so:
[Capture WAVEHDRs][Playback WAVEHDRs][Capture Intermediary Buffer][Playback Intermediary Buffer]
We attach this to the end of the device state struct.
*/
heapSize = 0;
if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex) {
@@ -27287,13 +27289,24 @@ static ma_result ma_device_init__winmm(ma_device* pDevice, const void* pDeviceBa
heapSize += sizeof(MA_WAVEHDR)*pDescriptorPlayback->periodCount + (pDescriptorPlayback->periodSizeInFrames * pDescriptorPlayback->periodCount * ma_get_bytes_per_frame(pDescriptorPlayback->format, pDescriptorPlayback->channels));
}
pDeviceStateWinMM->_pHeapData = (ma_uint8*)ma_calloc(heapSize, ma_device_get_allocation_callbacks(pDevice));
if (pDeviceStateWinMM->_pHeapData == NULL) {
errorMsg = "[WinMM] Failed to allocate memory for the intermediary buffer.", errorCode = MA_OUT_OF_MEMORY;
goto on_error;
}
{
size_t newDeviceStateAllocSize;
ma_device_state_winmm* pNewDeviceStateWinMM;
MA_ZERO_MEMORY(pDeviceStateWinMM->_pHeapData, heapSize);
newDeviceStateAllocSize = 0;
newDeviceStateAllocSize += ma_align_64(sizeof(*pDeviceStateWinMM));
newDeviceStateAllocSize += ma_align_64(heapSize);
pNewDeviceStateWinMM = (ma_device_state_winmm*)ma_realloc(pDeviceStateWinMM, newDeviceStateAllocSize, ma_device_get_allocation_callbacks(pDevice));
if (pNewDeviceStateWinMM == NULL) {
goto on_error;
}
pDeviceStateWinMM = pNewDeviceStateWinMM;
pDeviceStateWinMM->_pHeapData = (ma_uint8*)ma_offset_ptr(pDeviceStateWinMM, ma_align_64(sizeof(*pDeviceStateWinMM)));
MA_ZERO_MEMORY(pDeviceStateWinMM->_pHeapData, heapSize);
}
if (deviceType == ma_device_type_capture || deviceType == ma_device_type_duplex) {
ma_uint32 iPeriod;
@@ -27374,7 +27387,6 @@ on_error:
pContextStateWinMM->waveOutClose(pDeviceStateWinMM->hDevicePlayback);
}
ma_free(pDeviceStateWinMM->_pHeapData, ma_device_get_allocation_callbacks(pDevice));
ma_free(pDeviceStateWinMM, ma_device_get_allocation_callbacks(pDevice));
if (errorMsg != NULL && errorMsg[0] != '\0') {
@@ -27401,7 +27413,6 @@ static void ma_device_uninit__winmm(ma_device* pDevice)
CloseHandle(pDeviceStateWinMM->hEventPlayback);
}
ma_free(pDeviceStateWinMM->_pHeapData, ma_device_get_allocation_callbacks(pDevice));
ma_free(pDeviceStateWinMM, ma_device_get_allocation_callbacks(pDevice));
}