[PATCH 3/6] mmdevapi: Remove the format check when creating a spatial audio client.

[Giovanni Mascellani]

From: Giovanni Mascellani

The current method relies on IsFormatSupported() accepting formats
which differs by channel count from the mix format. However that
was changed in 00211db0d08d60ee9a0e40206bf7cf9b5b88987b, because
it doesn't match native behavior.

The check in SpatialAudioClient_Create() doesn't look particularly
useful anyway; the real format check is done in
ActivateSpatialAudioStream(), where all the parameters (including
channel count) are known.
---
 dlls/mmdevapi/spatialaudio.c | 42 ------------------------------------
 1 file changed, 42 deletions(-)

diff --git a/dlls/mmdevapi/spatialaudio.c b/dlls/mmdevapi/spatialaudio.c
index b721af6229b..58d1005d741 100644
--- a/dlls/mmdevapi/spatialaudio.c
+++ b/dlls/mmdevapi/spatialaudio.c
@@ -931,9 +931,6 @@ static IAudioFormatEnumeratorVtbl IAudioFormatEnumerator_vtbl = {
 HRESULT SpatialAudioClient_Create(IMMDevice *mmdev, ISpatialAudioClient **out)
 {
     SpatialAudioImpl *obj;
-    IAudioClient *aclient;
-    WAVEFORMATEX *closest;
-    HRESULT hr;

obj = calloc(1, sizeof(*obj));

@@ -949,45 +946,6 @@ HRESULT SpatialAudioClient_Create(IMMDevice *mmdev, ISpatialAudioClient **out)
     obj->object_fmtex.Format.nAvgBytesPerSec = obj->object_fmtex.Format.nSamplesPerSec * obj->object_fmtex.Format.nBlockAlign;
     obj->object_fmtex.Format.cbSize = 0;

-    hr = IMMDevice_Activate(mmdev, &IID_IAudioClient,
-            CLSCTX_INPROC_SERVER, NULL, (void**)&aclient);
-    if(FAILED(hr)){
-        WARN("Activate failed: %08lx\n", hr);
-        free(obj);
-        return hr;
-    }
-
-    hr = IAudioClient_IsFormatSupported(aclient, AUDCLNT_SHAREMODE_SHARED, &obj->object_fmtex.Format, &closest);
-
-    IAudioClient_Release(aclient);
-
-    if(hr == S_FALSE){
-        if(sizeof(WAVEFORMATEX) + closest->cbSize > sizeof(obj->object_fmtex)){
-            ERR("Returned format too large: %s\n", debugstr_fmtex(closest));
-            CoTaskMemFree(closest);
-            free(obj);
-            return AUDCLNT_E_UNSUPPORTED_FORMAT;
-        }else if(!((closest->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
-                    (closest->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
-                     IsEqualGUID(&((WAVEFORMATEXTENSIBLE *)closest)->SubFormat,
-                         &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))) &&
-                    closest->wBitsPerSample == 32)){
-            ERR("Returned format not 32-bit float: %s\n", debugstr_fmtex(closest));
-            CoTaskMemFree(closest);
-            free(obj);
-            return AUDCLNT_E_UNSUPPORTED_FORMAT;
-        }
-        WARN("The audio stack doesn't support 48kHz 32bit float. Using the closest match. Audio may be glitchy. %s\n", debugstr_fmtex(closest));
-        memcpy(&obj->object_fmtex,
-               closest,
-               sizeof(WAVEFORMATEX) + closest->cbSize);
-        CoTaskMemFree(closest);
-    } else if(hr != S_OK){
-        WARN("Checking supported formats failed: %08lx\n", hr);
-        free(obj);
-        return hr;
-    }
-
     obj->mmdev = mmdev;
     IMMDevice_AddRef(mmdev);