Sweden-Number/dlls/amstream/audiodata.c

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/*
* Implementation of IAudioData Interface
*
* Copyright 2012 Christian Costa
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "wine/debug.h"
#define COBJMACROS
#include "winbase.h"
#include "amstream_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
typedef struct {
IAudioData IAudioData_iface;
LONG ref;
DWORD size;
BYTE *data;
BOOL data_owned;
DWORD actual_data;
WAVEFORMATEX wave_format;
} AMAudioDataImpl;
static inline AMAudioDataImpl *impl_from_IAudioData(IAudioData *iface)
{
return CONTAINING_RECORD(iface, AMAudioDataImpl, IAudioData_iface);
}
/*** IUnknown methods ***/
static HRESULT WINAPI IAudioDataImpl_QueryInterface(IAudioData *iface, REFIID riid, void **ret_iface)
{
TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ret_iface);
if (IsEqualGUID(riid, &IID_IUnknown) ||
IsEqualGUID(riid, &IID_IAudioData))
{
IAudioData_AddRef(iface);
*ret_iface = iface;
return S_OK;
}
ERR("(%p)->(%s,%p),not found\n", iface, debugstr_guid(riid), ret_iface);
return E_NOINTERFACE;
}
static ULONG WINAPI IAudioDataImpl_AddRef(IAudioData* iface)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p)->(): new ref = %lu\n", iface, This->ref);
return ref;
}
static ULONG WINAPI IAudioDataImpl_Release(IAudioData* iface)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p)->(): new ref = %lu\n", iface, This->ref);
if (!ref)
{
if (This->data_owned)
{
CoTaskMemFree(This->data);
}
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
/*** IMemoryData methods ***/
static HRESULT WINAPI IAudioDataImpl_SetBuffer(IAudioData* iface, DWORD size, BYTE *data, DWORD flags)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
TRACE("(%p)->(%lu,%p,%lx)\n", iface, size, data, flags);
if (!size)
{
return E_INVALIDARG;
}
if (This->data_owned)
{
CoTaskMemFree(This->data);
This->data_owned = FALSE;
}
This->size = size;
This->data = data;
if (!This->data)
{
This->data = CoTaskMemAlloc(This->size);
This->data_owned = TRUE;
if (!This->data)
{
return E_OUTOFMEMORY;
}
}
return S_OK;
}
static HRESULT WINAPI IAudioDataImpl_GetInfo(IAudioData* iface, DWORD *length, BYTE **data, DWORD *actual_data)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
TRACE("(%p)->(%p,%p,%p)\n", iface, length, data, actual_data);
if (!This->data)
{
return MS_E_NOTINIT;
}
if (length)
{
*length = This->size;
}
if (data)
{
*data = This->data;
}
if (actual_data)
{
*actual_data = This->actual_data;
}
return S_OK;
}
static HRESULT WINAPI IAudioDataImpl_SetActual(IAudioData* iface, DWORD data_valid)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
TRACE("(%p)->(%lu)\n", iface, data_valid);
if (data_valid > This->size)
{
return E_INVALIDARG;
}
This->actual_data = data_valid;
return S_OK;
}
/*** IAudioData methods ***/
static HRESULT WINAPI IAudioDataImpl_GetFormat(IAudioData* iface, WAVEFORMATEX *wave_format_current)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
TRACE("(%p)->(%p)\n", iface, wave_format_current);
if (!wave_format_current)
{
return E_POINTER;
}
*wave_format_current = This->wave_format;
return S_OK;
}
static HRESULT WINAPI IAudioDataImpl_SetFormat(IAudioData* iface, const WAVEFORMATEX *wave_format)
{
AMAudioDataImpl *This = impl_from_IAudioData(iface);
TRACE("(%p)->(%p)\n", iface, wave_format);
if (!wave_format)
{
return E_POINTER;
}
if (WAVE_FORMAT_PCM != wave_format->wFormatTag)
{
return E_INVALIDARG;
}
This->wave_format = *wave_format;
return S_OK;
}
static const struct IAudioDataVtbl AudioData_Vtbl =
{
/*** IUnknown methods ***/
IAudioDataImpl_QueryInterface,
IAudioDataImpl_AddRef,
IAudioDataImpl_Release,
/*** IMemoryData methods ***/
IAudioDataImpl_SetBuffer,
IAudioDataImpl_GetInfo,
IAudioDataImpl_SetActual,
/*** IAudioData methods ***/
IAudioDataImpl_GetFormat,
IAudioDataImpl_SetFormat
};
HRESULT AMAudioData_create(IUnknown *pUnkOuter, LPVOID *ppObj)
{
AMAudioDataImpl *object;
TRACE("(%p,%p)\n", pUnkOuter, ppObj);
if (pUnkOuter)
return CLASS_E_NOAGGREGATION;
object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(AMAudioDataImpl));
if (!object)
return E_OUTOFMEMORY;
object->IAudioData_iface.lpVtbl = &AudioData_Vtbl;
object->ref = 1;
object->wave_format.wFormatTag = WAVE_FORMAT_PCM;
object->wave_format.nChannels = 1;
object->wave_format.nSamplesPerSec = 11025;
object->wave_format.wBitsPerSample = 16;
object->wave_format.nBlockAlign = object->wave_format.wBitsPerSample * object->wave_format.nChannels / 8;
object->wave_format.nAvgBytesPerSec = object->wave_format.nBlockAlign * object->wave_format.nSamplesPerSec;
*ppObj = &object->IAudioData_iface;
return S_OK;
}