Sweden-Number/dlls/windowscodecs/encoder.c

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/*
* Copyright 2020 Esme Povirk
*
* 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 <stdarg.h>
#define NONAMELESSUNION
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
static const PROPBAG2 encoder_option_properties[ENCODER_OPTION_END] = {
{ PROPBAG2_TYPE_DATA, VT_BOOL, 0, 0, (LPOLESTR)L"InterlaceOption" },
{ PROPBAG2_TYPE_DATA, VT_UI1, 0, 0, (LPOLESTR)L"FilterOption" },
{ PROPBAG2_TYPE_DATA, VT_UI1, 0, 0, (LPOLESTR)L"TiffCompressionMethod" },
{ PROPBAG2_TYPE_DATA, VT_R4, 0, 0, (LPOLESTR)L"CompressionQuality" },
{ PROPBAG2_TYPE_DATA, VT_R4, 0, 0, (LPOLESTR)L"ImageQuality" },
{ PROPBAG2_TYPE_DATA, VT_UI1, 0, 0, (LPOLESTR)L"BitmapTransform" },
{ PROPBAG2_TYPE_DATA, VT_I4 | VT_ARRAY, 0, 0, (LPOLESTR)L"Luminance" },
{ PROPBAG2_TYPE_DATA, VT_I4 | VT_ARRAY, 0, 0, (LPOLESTR)L"Chrominance" },
{ PROPBAG2_TYPE_DATA, VT_UI1, 0, 0, (LPOLESTR)L"JpegYCrCbSubsampling" },
{ PROPBAG2_TYPE_DATA, VT_BOOL, 0, 0, (LPOLESTR)L"SuppressApp0" }
};
typedef struct CommonEncoder {
IWICBitmapEncoder IWICBitmapEncoder_iface;
LONG ref;
CRITICAL_SECTION lock; /* must be held when stream or encoder is accessed */
IStream *stream;
struct encoder *encoder;
struct encoder_info encoder_info;
UINT frame_count;
BOOL uncommitted_frame;
BOOL committed;
} CommonEncoder;
typedef struct CommonEncoderFrame {
IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
LONG ref;
CommonEncoder *parent;
struct encoder_frame encoder_frame;
BOOL initialized;
BOOL frame_created;
UINT lines_written;
BOOL committed;
} CommonEncoderFrame;
static inline CommonEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
{
return CONTAINING_RECORD(iface, CommonEncoder, IWICBitmapEncoder_iface);
}
static inline CommonEncoderFrame *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
{
return CONTAINING_RECORD(iface, CommonEncoderFrame, IWICBitmapFrameEncode_iface);
}
static HRESULT WINAPI CommonEncoderFrame_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
void **ppv)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
{
*ppv = &This->IWICBitmapFrameEncode_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI CommonEncoderFrame_AddRef(IWICBitmapFrameEncode *iface)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI CommonEncoderFrame_Release(IWICBitmapFrameEncode *iface)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
IWICBitmapEncoder_Release(&This->parent->IWICBitmapEncoder_iface);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI CommonEncoderFrame_Initialize(IWICBitmapFrameEncode *iface,
IPropertyBag2 *pIEncoderOptions)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr=S_OK;
struct encoder_frame options = {{0}};
PROPBAG2 opts[7]= {{0}};
VARIANT opt_values[7];
HRESULT opt_hres[7];
DWORD num_opts, i;
TRACE("(%p,%p)\n", iface, pIEncoderOptions);
if (pIEncoderOptions)
{
for (i=0; This->parent->encoder_info.encoder_options[i] != ENCODER_OPTION_END; i++)
opts[i] = encoder_option_properties[This->parent->encoder_info.encoder_options[i]];
num_opts = i;
hr = IPropertyBag2_Read(pIEncoderOptions, num_opts, opts, NULL, opt_values, opt_hres);
if (FAILED(hr))
return hr;
for (i=0; This->parent->encoder_info.encoder_options[i] != ENCODER_OPTION_END; i++)
{
VARIANT *val = &opt_values[i];
switch (This->parent->encoder_info.encoder_options[i])
{
case ENCODER_OPTION_INTERLACE:
if (V_VT(val) == VT_EMPTY)
options.interlace = FALSE;
else
options.interlace = (V_BOOL(val) != 0);
break;
case ENCODER_OPTION_FILTER:
options.filter = V_UI1(val);
if (options.filter > WICPngFilterAdaptive)
{
WARN("Unrecognized filter option value %u.\n", options.filter);
options.filter = WICPngFilterUnspecified;
}
break;
default:
break;
}
}
}
else
{
options.interlace = FALSE;
options.filter = WICPngFilterUnspecified;
}
EnterCriticalSection(&This->parent->lock);
if (This->initialized)
hr = WINCODEC_ERR_WRONGSTATE;
else
{
This->encoder_frame = options;
This->initialized = TRUE;
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_SetSize(IWICBitmapFrameEncode *iface,
UINT uiWidth, UINT uiHeight)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
EnterCriticalSection(&This->parent->lock);
if (This->parent->encoder_info.flags & ENCODER_FLAGS_ICNS_SIZE)
{
if (uiWidth != uiHeight)
{
WARN("cannot generate ICNS icon from %dx%d image\n", uiWidth, uiHeight);
hr = E_INVALIDARG;
goto end;
}
switch (uiWidth)
{
case 16:
case 32:
case 48:
case 128:
case 256:
case 512:
break;
default:
WARN("cannot generate ICNS icon from %dx%d image\n", uiWidth, uiHeight);
hr = E_INVALIDARG;
goto end;
}
}
if (!This->initialized || This->frame_created)
{
hr = WINCODEC_ERR_WRONGSTATE;
}
else
{
This->encoder_frame.width = uiWidth;
This->encoder_frame.height = uiHeight;
hr = S_OK;
}
end:
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_SetResolution(IWICBitmapFrameEncode *iface,
double dpiX, double dpiY)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
EnterCriticalSection(&This->parent->lock);
if (!This->initialized || This->frame_created)
{
hr = WINCODEC_ERR_WRONGSTATE;
}
else
{
This->encoder_frame.dpix = dpiX;
This->encoder_frame.dpiy = dpiY;
hr = S_OK;
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_SetPixelFormat(IWICBitmapFrameEncode *iface,
WICPixelFormatGUID *pPixelFormat)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
GUID pixel_format;
DWORD bpp;
BOOL indexed;
TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
EnterCriticalSection(&This->parent->lock);
if (!This->initialized || This->frame_created)
{
hr = WINCODEC_ERR_WRONGSTATE;
}
else
{
pixel_format = *pPixelFormat;
hr = encoder_get_supported_format(This->parent->encoder, &pixel_format, &bpp, &indexed);
}
if (SUCCEEDED(hr))
{
TRACE("<-- %s bpp=%i indexed=%i\n", wine_dbgstr_guid(&pixel_format), bpp, indexed);
*pPixelFormat = pixel_format;
This->encoder_frame.pixel_format = pixel_format;
This->encoder_frame.bpp = bpp;
This->encoder_frame.indexed = indexed;
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_SetColorContexts(IWICBitmapFrameEncode *iface,
UINT cCount, IWICColorContext **ppIColorContext)
{
FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
return E_NOTIMPL;
}
static HRESULT WINAPI CommonEncoderFrame_SetPalette(IWICBitmapFrameEncode *iface,
IWICPalette *palette)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p,%p)\n", iface, palette);
if (!palette)
return E_INVALIDARG;
EnterCriticalSection(&This->parent->lock);
if (!This->initialized)
hr = WINCODEC_ERR_NOTINITIALIZED;
else if (This->frame_created)
hr = WINCODEC_ERR_WRONGSTATE;
else
hr = IWICPalette_GetColors(palette, 256, This->encoder_frame.palette,
&This->encoder_frame.num_colors);
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_SetThumbnail(IWICBitmapFrameEncode *iface,
IWICBitmapSource *pIThumbnail)
{
FIXME("(%p,%p): stub\n", iface, pIThumbnail);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI CommonEncoderFrame_WritePixels(IWICBitmapFrameEncode *iface,
UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr=S_OK;
DWORD required_stride;
TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
EnterCriticalSection(&This->parent->lock);
if (!This->initialized || !This->encoder_frame.height || !This->encoder_frame.width ||
!This->encoder_frame.bpp)
{
LeaveCriticalSection(&This->parent->lock);
return WINCODEC_ERR_WRONGSTATE;
}
required_stride = (This->encoder_frame.width * This->encoder_frame.bpp + 7)/8;
if (lineCount == 0 || This->encoder_frame.height - This->lines_written < lineCount ||
cbStride < required_stride || cbBufferSize < cbStride * (lineCount - 1) + required_stride ||
!pbPixels)
{
LeaveCriticalSection(&This->parent->lock);
return E_INVALIDARG;
}
if (!This->frame_created)
{
hr = encoder_create_frame(This->parent->encoder, &This->encoder_frame);
if (SUCCEEDED(hr))
This->frame_created = TRUE;
}
if (SUCCEEDED(hr))
{
hr = encoder_write_lines(This->parent->encoder, pbPixels, lineCount, cbStride);
if (SUCCEEDED(hr))
This->lines_written += lineCount;
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_WriteSource(IWICBitmapFrameEncode *iface,
IWICBitmapSource *pIBitmapSource, WICRect *prc)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p,%p,%s)\n", iface, pIBitmapSource, debug_wic_rect(prc));
if (!This->initialized)
return WINCODEC_ERR_WRONGSTATE;
hr = configure_write_source(iface, pIBitmapSource, prc,
This->encoder_frame.bpp ? &This->encoder_frame.pixel_format : NULL,
This->encoder_frame.width, This->encoder_frame.height,
This->encoder_frame.dpix, This->encoder_frame.dpiy);
if (SUCCEEDED(hr))
{
hr = write_source(iface, pIBitmapSource, prc,
&This->encoder_frame.pixel_format, This->encoder_frame.bpp,
!This->encoder_frame.num_colors && This->encoder_frame.indexed,
This->encoder_frame.width, This->encoder_frame.height);
}
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_Commit(IWICBitmapFrameEncode *iface)
{
CommonEncoderFrame *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
TRACE("(%p)\n", iface);
EnterCriticalSection(&This->parent->lock);
if (!This->frame_created || This->lines_written != This->encoder_frame.height ||
This->committed)
{
hr = WINCODEC_ERR_WRONGSTATE;
}
else
{
hr = encoder_commit_frame(This->parent->encoder);
if (SUCCEEDED(hr))
{
This->committed = TRUE;
This->parent->uncommitted_frame = FALSE;
}
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonEncoderFrame_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
IWICMetadataQueryWriter **ppIMetadataQueryWriter)
{
FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
return E_NOTIMPL;
}
static const IWICBitmapFrameEncodeVtbl CommonEncoderFrame_Vtbl = {
CommonEncoderFrame_QueryInterface,
CommonEncoderFrame_AddRef,
CommonEncoderFrame_Release,
CommonEncoderFrame_Initialize,
CommonEncoderFrame_SetSize,
CommonEncoderFrame_SetResolution,
CommonEncoderFrame_SetPixelFormat,
CommonEncoderFrame_SetColorContexts,
CommonEncoderFrame_SetPalette,
CommonEncoderFrame_SetThumbnail,
CommonEncoderFrame_WritePixels,
CommonEncoderFrame_WriteSource,
CommonEncoderFrame_Commit,
CommonEncoderFrame_GetMetadataQueryWriter
};
static HRESULT WINAPI CommonEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
void **ppv)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapEncoder, iid))
{
*ppv = &This->IWICBitmapEncoder_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI CommonEncoder_AddRef(IWICBitmapEncoder *iface)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI CommonEncoder_Release(IWICBitmapEncoder *iface)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
This->lock.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->lock);
if (This->stream)
IStream_Release(This->stream);
encoder_destroy(This->encoder);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI CommonEncoder_Initialize(IWICBitmapEncoder *iface,
IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
HRESULT hr;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
if (!pIStream)
return E_POINTER;
EnterCriticalSection(&This->lock);
if (This->stream)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
hr = encoder_initialize(This->encoder, pIStream);
if (SUCCEEDED(hr))
{
This->stream = pIStream;
IStream_AddRef(This->stream);
}
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI CommonEncoder_GetContainerFormat(IWICBitmapEncoder *iface, GUID *format)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
TRACE("(%p,%p)\n", iface, format);
if (!format)
return E_INVALIDARG;
memcpy(format, &This->encoder_info.container_format, sizeof(*format));
return S_OK;
}
static HRESULT WINAPI CommonEncoder_GetEncoderInfo(IWICBitmapEncoder *iface, IWICBitmapEncoderInfo **info)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
IWICComponentInfo *comp_info;
HRESULT hr;
TRACE("%p,%p\n", iface, info);
if (!info) return E_INVALIDARG;
hr = CreateComponentInfo(&This->encoder_info.clsid, &comp_info);
if (hr == S_OK)
{
hr = IWICComponentInfo_QueryInterface(comp_info, &IID_IWICBitmapEncoderInfo, (void **)info);
IWICComponentInfo_Release(comp_info);
}
return hr;
}
static HRESULT WINAPI CommonEncoder_SetColorContexts(IWICBitmapEncoder *iface,
UINT cCount, IWICColorContext **ppIColorContext)
{
FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
return E_NOTIMPL;
}
static HRESULT WINAPI CommonEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *palette)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
HRESULT hr;
TRACE("(%p,%p)\n", iface, palette);
EnterCriticalSection(&This->lock);
hr = This->stream ? WINCODEC_ERR_UNSUPPORTEDOPERATION : WINCODEC_ERR_NOTINITIALIZED;
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI CommonEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
{
TRACE("(%p,%p)\n", iface, pIThumbnail);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI CommonEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
{
TRACE("(%p,%p)\n", iface, pIPreview);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI CommonEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
CommonEncoderFrame *result;
HRESULT hr;
DWORD opts_length;
PROPBAG2 opts[6];
TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
EnterCriticalSection(&This->lock);
if (This->frame_count != 0 && !(This->encoder_info.flags & ENCODER_FLAGS_MULTI_FRAME))
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
if (!This->stream || This->committed || This->uncommitted_frame)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_NOTINITIALIZED;
}
result = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*result));
if (!result)
{
LeaveCriticalSection(&This->lock);
return E_OUTOFMEMORY;
}
result->IWICBitmapFrameEncode_iface.lpVtbl = &CommonEncoderFrame_Vtbl;
result->ref = 1;
result->parent = This;
if (ppIEncoderOptions)
{
for (opts_length = 0; This->encoder_info.encoder_options[opts_length] < ENCODER_OPTION_END; opts_length++)
{
opts[opts_length] = encoder_option_properties[This->encoder_info.encoder_options[opts_length]];
}
hr = CreatePropertyBag2(opts, opts_length, ppIEncoderOptions);
if (FAILED(hr))
{
LeaveCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, result);
return hr;
}
}
IWICBitmapEncoder_AddRef(iface);
This->frame_count++;
This->uncommitted_frame = TRUE;
LeaveCriticalSection(&This->lock);
*ppIFrameEncode = &result->IWICBitmapFrameEncode_iface;
return S_OK;
}
static HRESULT WINAPI CommonEncoder_Commit(IWICBitmapEncoder *iface)
{
CommonEncoder *This = impl_from_IWICBitmapEncoder(iface);
HRESULT hr;
TRACE("(%p)\n", iface);
EnterCriticalSection(&This->lock);
if (This->committed || This->uncommitted_frame)
hr = WINCODEC_ERR_WRONGSTATE;
else
{
hr = encoder_commit_file(This->encoder);
if (SUCCEEDED(hr))
This->committed = TRUE;
}
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI CommonEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
IWICMetadataQueryWriter **ppIMetadataQueryWriter)
{
FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
return E_NOTIMPL;
}
static const IWICBitmapEncoderVtbl CommonEncoder_Vtbl = {
CommonEncoder_QueryInterface,
CommonEncoder_AddRef,
CommonEncoder_Release,
CommonEncoder_Initialize,
CommonEncoder_GetContainerFormat,
CommonEncoder_GetEncoderInfo,
CommonEncoder_SetColorContexts,
CommonEncoder_SetPalette,
CommonEncoder_SetThumbnail,
CommonEncoder_SetPreview,
CommonEncoder_CreateNewFrame,
CommonEncoder_Commit,
CommonEncoder_GetMetadataQueryWriter
};
HRESULT CommonEncoder_CreateInstance(struct encoder *encoder,
const struct encoder_info *encoder_info, REFIID iid, void** ppv)
{
CommonEncoder *This;
HRESULT ret;
TRACE("(%s,%p)\n", debugstr_guid(iid), ppv);
*ppv = NULL;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(CommonEncoder));
if (!This)
{
encoder_destroy(encoder);
return E_OUTOFMEMORY;
}
This->IWICBitmapEncoder_iface.lpVtbl = &CommonEncoder_Vtbl;
This->ref = 1;
This->stream = NULL;
This->encoder = encoder;
This->encoder_info = *encoder_info;
This->frame_count = 0;
This->uncommitted_frame = FALSE;
This->committed = FALSE;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": CommonEncoder.lock");
ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
return ret;
}