Sweden-Number/dlls/windowscodecs/decoder.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);
typedef struct {
IWICBitmapDecoder IWICBitmapDecoder_iface;
LONG ref;
CRITICAL_SECTION lock; /* must be held when stream or decoder is accessed */
IStream *stream;
struct decoder *decoder;
struct decoder_info decoder_info;
struct decoder_stat file_info;
WICDecodeOptions cache_options;
} CommonDecoder;
static inline CommonDecoder *impl_from_IWICBitmapDecoder(IWICBitmapDecoder *iface)
{
return CONTAINING_RECORD(iface, CommonDecoder, IWICBitmapDecoder_iface);
}
static HRESULT WINAPI CommonDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
void **ppv)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IWICBitmapDecoder, iid))
{
*ppv = &This->IWICBitmapDecoder_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI CommonDecoder_AddRef(IWICBitmapDecoder *iface)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI CommonDecoder_Release(IWICBitmapDecoder *iface)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
if (This->stream)
IStream_Release(This->stream);
This->lock.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->lock);
decoder_destroy(This->decoder);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI CommonDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *stream,
DWORD *capability)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
HRESULT hr;
TRACE("(%p,%p,%p)\n", iface, stream, capability);
if (!stream || !capability) return E_INVALIDARG;
hr = IWICBitmapDecoder_Initialize(iface, stream, WICDecodeMetadataCacheOnDemand);
if (hr != S_OK) return hr;
*capability = (This->file_info.flags & DECODER_FLAGS_CAPABILITY_MASK);
return S_OK;
}
static HRESULT WINAPI CommonDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
WICDecodeOptions cacheOptions)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
HRESULT hr=S_OK;
TRACE("(%p,%p,%x)\n", iface, pIStream, cacheOptions);
EnterCriticalSection(&This->lock);
if (This->stream)
hr = WINCODEC_ERR_WRONGSTATE;
if (SUCCEEDED(hr))
hr = decoder_initialize(This->decoder, pIStream, &This->file_info);
if (SUCCEEDED(hr))
{
This->cache_options = cacheOptions;
This->stream = pIStream;
IStream_AddRef(This->stream);
}
LeaveCriticalSection(&This->lock);
return hr;
}
static HRESULT WINAPI CommonDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
GUID *pguidContainerFormat)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
memcpy(pguidContainerFormat, &This->decoder_info.container_format, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI CommonDecoder_GetDecoderInfo(IWICBitmapDecoder *iface,
IWICBitmapDecoderInfo **ppIDecoderInfo)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
TRACE("(%p,%p)\n", iface, ppIDecoderInfo);
return get_decoder_info(&This->decoder_info.clsid, ppIDecoderInfo);
}
static HRESULT WINAPI CommonDecoder_CopyPalette(IWICBitmapDecoder *iface,
IWICPalette *palette)
{
TRACE("(%p,%p)\n", iface, palette);
return WINCODEC_ERR_PALETTEUNAVAILABLE;
}
static HRESULT WINAPI CommonDecoder_GetMetadataQueryReader(IWICBitmapDecoder *iface,
IWICMetadataQueryReader **reader)
{
TRACE("(%p,%p)\n", iface, reader);
if (!reader) return E_INVALIDARG;
*reader = NULL;
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI CommonDecoder_GetPreview(IWICBitmapDecoder *iface,
IWICBitmapSource **ppIBitmapSource)
{
TRACE("(%p,%p)\n", iface, ppIBitmapSource);
if (!ppIBitmapSource) return E_INVALIDARG;
*ppIBitmapSource = NULL;
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI CommonDecoder_GetColorContexts(IWICBitmapDecoder *iface,
UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
{
TRACE("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI CommonDecoder_GetThumbnail(IWICBitmapDecoder *iface,
IWICBitmapSource **ppIThumbnail)
{
TRACE("(%p,%p)\n", iface, ppIThumbnail);
if (!ppIThumbnail) return E_INVALIDARG;
*ppIThumbnail = NULL;
return WINCODEC_ERR_CODECNOTHUMBNAIL;
}
static HRESULT WINAPI CommonDecoder_GetFrameCount(IWICBitmapDecoder *iface,
UINT *pCount)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
if (!pCount) return E_INVALIDARG;
if (This->stream)
*pCount = This->file_info.frame_count;
else
*pCount = 0;
return S_OK;
}
static HRESULT WINAPI CommonDecoder_GetFrame(IWICBitmapDecoder *iface,
UINT index, IWICBitmapFrameDecode **ppIBitmapFrame);
static const IWICBitmapDecoderVtbl CommonDecoder_Vtbl = {
CommonDecoder_QueryInterface,
CommonDecoder_AddRef,
CommonDecoder_Release,
CommonDecoder_QueryCapability,
CommonDecoder_Initialize,
CommonDecoder_GetContainerFormat,
CommonDecoder_GetDecoderInfo,
CommonDecoder_CopyPalette,
CommonDecoder_GetMetadataQueryReader,
CommonDecoder_GetPreview,
CommonDecoder_GetColorContexts,
CommonDecoder_GetThumbnail,
CommonDecoder_GetFrameCount,
CommonDecoder_GetFrame
};
typedef struct {
IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
IWICMetadataBlockReader IWICMetadataBlockReader_iface;
LONG ref;
CommonDecoder *parent;
DWORD frame;
struct decoder_frame decoder_frame;
BOOL metadata_initialized;
UINT metadata_count;
struct decoder_block* metadata_blocks;
} CommonDecoderFrame;
static inline CommonDecoderFrame *impl_from_IWICBitmapFrameDecode(IWICBitmapFrameDecode *iface)
{
return CONTAINING_RECORD(iface, CommonDecoderFrame, IWICBitmapFrameDecode_iface);
}
static inline CommonDecoderFrame *impl_from_IWICMetadataBlockReader(IWICMetadataBlockReader *iface)
{
return CONTAINING_RECORD(iface, CommonDecoderFrame, IWICMetadataBlockReader_iface);
}
static HRESULT WINAPI CommonDecoderFrame_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
void **ppv)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapSource, iid) ||
IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
{
*ppv = &This->IWICBitmapFrameDecode_iface;
}
else if (IsEqualIID(&IID_IWICMetadataBlockReader, iid) &&
(This->parent->file_info.flags & WICBitmapDecoderCapabilityCanEnumerateMetadata))
{
*ppv = &This->IWICMetadataBlockReader_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI CommonDecoderFrame_AddRef(IWICBitmapFrameDecode *iface)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI CommonDecoderFrame_Release(IWICBitmapFrameDecode *iface)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
IWICBitmapDecoder_Release(&This->parent->IWICBitmapDecoder_iface);
HeapFree(GetProcessHeap(), 0, This->metadata_blocks);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI CommonDecoderFrame_GetSize(IWICBitmapFrameDecode *iface,
UINT *puiWidth, UINT *puiHeight)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
TRACE("(%p,%p,%p)\n", This, puiWidth, puiHeight);
if (!puiWidth || !puiHeight)
return E_POINTER;
*puiWidth = This->decoder_frame.width;
*puiHeight = This->decoder_frame.height;
return S_OK;
}
static HRESULT WINAPI CommonDecoderFrame_GetPixelFormat(IWICBitmapFrameDecode *iface,
WICPixelFormatGUID *pPixelFormat)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
TRACE("(%p,%p)\n", This, pPixelFormat);
if (!pPixelFormat)
return E_POINTER;
*pPixelFormat = This->decoder_frame.pixel_format;
return S_OK;
}
static HRESULT WINAPI CommonDecoderFrame_GetResolution(IWICBitmapFrameDecode *iface,
double *pDpiX, double *pDpiY)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
TRACE("(%p,%p,%p)\n", This, pDpiX, pDpiY);
if (!pDpiX || !pDpiY)
return E_POINTER;
*pDpiX = This->decoder_frame.dpix;
*pDpiY = This->decoder_frame.dpiy;
return S_OK;
}
static HRESULT WINAPI CommonDecoderFrame_CopyPalette(IWICBitmapFrameDecode *iface,
IWICPalette *pIPalette)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
HRESULT hr=S_OK;
TRACE("(%p,%p)\n", iface, pIPalette);
if (This->decoder_frame.num_colors)
{
hr = IWICPalette_InitializeCustom(pIPalette, This->decoder_frame.palette, This->decoder_frame.num_colors);
}
else
{
hr = WINCODEC_ERR_PALETTEUNAVAILABLE;
}
return hr;
}
static HRESULT WINAPI CommonDecoderFrame_CopyPixels(IWICBitmapFrameDecode *iface,
const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
HRESULT hr;
UINT bytesperrow;
WICRect rect;
TRACE("(%p,%s,%u,%u,%p)\n", iface, debug_wic_rect(prc), cbStride, cbBufferSize, pbBuffer);
if (!pbBuffer)
return E_POINTER;
if (!prc)
{
rect.X = 0;
rect.Y = 0;
rect.Width = This->decoder_frame.width;
rect.Height = This->decoder_frame.height;
prc = &rect;
}
else
{
if (prc->X < 0 || prc->Y < 0 ||
prc->X+prc->Width > This->decoder_frame.width ||
prc->Y+prc->Height > This->decoder_frame.height)
return E_INVALIDARG;
}
bytesperrow = ((This->decoder_frame.bpp * prc->Width)+7)/8;
if (cbStride < bytesperrow)
return E_INVALIDARG;
if ((cbStride * (prc->Height-1)) + bytesperrow > cbBufferSize)
return E_INVALIDARG;
EnterCriticalSection(&This->parent->lock);
hr = decoder_copy_pixels(This->parent->decoder, This->frame,
prc, cbStride, cbBufferSize, pbBuffer);
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonDecoderFrame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
IWICMetadataQueryReader **ppIMetadataQueryReader)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
IWICComponentFactory* factory;
HRESULT hr;
TRACE("(%p,%p)\n", iface, ppIMetadataQueryReader);
if (!ppIMetadataQueryReader)
return E_INVALIDARG;
if (!(This->parent->file_info.flags & WICBitmapDecoderCapabilityCanEnumerateMetadata))
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
hr = create_instance(&CLSID_WICImagingFactory, &IID_IWICComponentFactory, (void**)&factory);
if (SUCCEEDED(hr))
{
hr = IWICComponentFactory_CreateQueryReaderFromBlockReader(factory, &This->IWICMetadataBlockReader_iface, ppIMetadataQueryReader);
IWICComponentFactory_Release(factory);
}
if (FAILED(hr))
*ppIMetadataQueryReader = NULL;
return hr;
}
static HRESULT WINAPI CommonDecoderFrame_GetColorContexts(IWICBitmapFrameDecode *iface,
UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
{
CommonDecoderFrame *This = impl_from_IWICBitmapFrameDecode(iface);
HRESULT hr=S_OK;
UINT i;
BYTE *profile;
DWORD profile_len;
TRACE("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
if (!pcActualCount) return E_INVALIDARG;
if (This->parent->file_info.flags & DECODER_FLAGS_UNSUPPORTED_COLOR_CONTEXT)
{
FIXME("not supported for %s\n", wine_dbgstr_guid(&This->parent->decoder_info.clsid));
*pcActualCount = 0;
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
*pcActualCount = This->decoder_frame.num_color_contexts;
if (This->decoder_frame.num_color_contexts && cCount && ppIColorContexts)
{
if (cCount >= This->decoder_frame.num_color_contexts)
{
EnterCriticalSection(&This->parent->lock);
for (i=0; i<This->decoder_frame.num_color_contexts; i++)
{
hr = decoder_get_color_context(This->parent->decoder, This->frame, i,
&profile, &profile_len);
if (SUCCEEDED(hr))
{
hr = IWICColorContext_InitializeFromMemory(ppIColorContexts[i], profile, profile_len);
HeapFree(GetProcessHeap(), 0, profile);
}
if (FAILED(hr))
break;
}
LeaveCriticalSection(&This->parent->lock);
}
else
{
hr = E_INVALIDARG;
}
}
return hr;
}
static HRESULT WINAPI CommonDecoderFrame_GetThumbnail(IWICBitmapFrameDecode *iface,
IWICBitmapSource **ppIThumbnail)
{
TRACE("(%p,%p)\n", iface, ppIThumbnail);
if (!ppIThumbnail) return E_INVALIDARG;
*ppIThumbnail = NULL;
return WINCODEC_ERR_CODECNOTHUMBNAIL;
}
static const IWICBitmapFrameDecodeVtbl CommonDecoderFrameVtbl = {
CommonDecoderFrame_QueryInterface,
CommonDecoderFrame_AddRef,
CommonDecoderFrame_Release,
CommonDecoderFrame_GetSize,
CommonDecoderFrame_GetPixelFormat,
CommonDecoderFrame_GetResolution,
CommonDecoderFrame_CopyPalette,
CommonDecoderFrame_CopyPixels,
CommonDecoderFrame_GetMetadataQueryReader,
CommonDecoderFrame_GetColorContexts,
CommonDecoderFrame_GetThumbnail
};
static HRESULT WINAPI CommonDecoderFrame_Block_QueryInterface(IWICMetadataBlockReader *iface, REFIID iid,
void **ppv)
{
CommonDecoderFrame *This = impl_from_IWICMetadataBlockReader(iface);
return IWICBitmapFrameDecode_QueryInterface(&This->IWICBitmapFrameDecode_iface, iid, ppv);
}
static ULONG WINAPI CommonDecoderFrame_Block_AddRef(IWICMetadataBlockReader *iface)
{
CommonDecoderFrame *This = impl_from_IWICMetadataBlockReader(iface);
return IWICBitmapFrameDecode_AddRef(&This->IWICBitmapFrameDecode_iface);
}
static ULONG WINAPI CommonDecoderFrame_Block_Release(IWICMetadataBlockReader *iface)
{
CommonDecoderFrame *This = impl_from_IWICMetadataBlockReader(iface);
return IWICBitmapFrameDecode_Release(&This->IWICBitmapFrameDecode_iface);
}
static HRESULT WINAPI CommonDecoderFrame_Block_GetContainerFormat(IWICMetadataBlockReader *iface,
GUID *pguidContainerFormat)
{
CommonDecoderFrame *This = impl_from_IWICMetadataBlockReader(iface);
if (!pguidContainerFormat) return E_INVALIDARG;
*pguidContainerFormat = This->parent->decoder_info.block_format;
return S_OK;
}
static HRESULT CommonDecoderFrame_InitializeMetadata(CommonDecoderFrame *This)
{
HRESULT hr=S_OK;
if (This->metadata_initialized)
return S_OK;
EnterCriticalSection(&This->parent->lock);
if (!This->metadata_initialized)
{
hr = decoder_get_metadata_blocks(This->parent->decoder, This->frame, &This->metadata_count, &This->metadata_blocks);
if (SUCCEEDED(hr))
This->metadata_initialized = TRUE;
}
LeaveCriticalSection(&This->parent->lock);
return hr;
}
static HRESULT WINAPI CommonDecoderFrame_Block_GetCount(IWICMetadataBlockReader *iface,
UINT *pcCount)
{
CommonDecoderFrame *This = impl_from_IWICMetadataBlockReader(iface);
HRESULT hr;
TRACE("%p,%p\n", iface, pcCount);
if (!pcCount) return E_INVALIDARG;
hr = CommonDecoderFrame_InitializeMetadata(This);
if (SUCCEEDED(hr))
*pcCount = This->metadata_count;
return hr;
}
static HRESULT WINAPI CommonDecoderFrame_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
UINT nIndex, IWICMetadataReader **ppIMetadataReader)
{
CommonDecoderFrame *This = impl_from_IWICMetadataBlockReader(iface);
HRESULT hr;
IWICComponentFactory* factory = NULL;
IWICStream* stream;
TRACE("%p,%d,%p\n", iface, nIndex, ppIMetadataReader);
if (!ppIMetadataReader)
return E_INVALIDARG;
hr = CommonDecoderFrame_InitializeMetadata(This);
if (SUCCEEDED(hr) && nIndex >= This->metadata_count)
hr = E_INVALIDARG;
if (SUCCEEDED(hr))
hr = create_instance(&CLSID_WICImagingFactory, &IID_IWICComponentFactory, (void**)&factory);
if (SUCCEEDED(hr))
hr = IWICComponentFactory_CreateStream(factory, &stream);
if (SUCCEEDED(hr))
{
if (This->metadata_blocks[nIndex].options & DECODER_BLOCK_FULL_STREAM)
{
LARGE_INTEGER offset;
offset.QuadPart = This->metadata_blocks[nIndex].offset;
hr = IWICStream_InitializeFromIStream(stream, This->parent->stream);
if (SUCCEEDED(hr))
hr = IWICStream_Seek(stream, offset, STREAM_SEEK_SET, NULL);
}
else
{
ULARGE_INTEGER offset, length;
offset.QuadPart = This->metadata_blocks[nIndex].offset;
length.QuadPart = This->metadata_blocks[nIndex].length;
hr = IWICStream_InitializeFromIStreamRegion(stream, This->parent->stream,
offset, length);
}
if (This->metadata_blocks[nIndex].options & DECODER_BLOCK_READER_CLSID)
{
IWICMetadataReader *reader;
IWICPersistStream *persist;
if (SUCCEEDED(hr))
{
hr = create_instance(&This->metadata_blocks[nIndex].reader_clsid,
&IID_IWICMetadataReader, (void**)&reader);
}
if (SUCCEEDED(hr))
{
hr = IWICMetadataReader_QueryInterface(reader, &IID_IWICPersistStream, (void**)&persist);
if (SUCCEEDED(hr))
{
hr = IWICPersistStream_LoadEx(persist, (IStream*)stream, NULL,
This->metadata_blocks[nIndex].options & DECODER_BLOCK_OPTION_MASK);
IWICPersistStream_Release(persist);
}
if (SUCCEEDED(hr))
*ppIMetadataReader = reader;
else
IWICMetadataReader_Release(reader);
}
}
else
{
hr = IWICComponentFactory_CreateMetadataReaderFromContainer(factory,
&This->parent->decoder_info.block_format, NULL,
This->metadata_blocks[nIndex].options & DECODER_BLOCK_OPTION_MASK,
(IStream*)stream, ppIMetadataReader);
}
IWICStream_Release(stream);
}
if (factory) IWICComponentFactory_Release(factory);
if (FAILED(hr))
*ppIMetadataReader = NULL;
return S_OK;
}
static HRESULT WINAPI CommonDecoderFrame_Block_GetEnumerator(IWICMetadataBlockReader *iface,
IEnumUnknown **ppIEnumMetadata)
{
FIXME("%p,%p\n", iface, ppIEnumMetadata);
return E_NOTIMPL;
}
static const IWICMetadataBlockReaderVtbl CommonDecoderFrame_BlockVtbl = {
CommonDecoderFrame_Block_QueryInterface,
CommonDecoderFrame_Block_AddRef,
CommonDecoderFrame_Block_Release,
CommonDecoderFrame_Block_GetContainerFormat,
CommonDecoderFrame_Block_GetCount,
CommonDecoderFrame_Block_GetReaderByIndex,
CommonDecoderFrame_Block_GetEnumerator,
};
static HRESULT WINAPI CommonDecoder_GetFrame(IWICBitmapDecoder *iface,
UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
{
CommonDecoder *This = impl_from_IWICBitmapDecoder(iface);
HRESULT hr=S_OK;
CommonDecoderFrame *result;
TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
if (!ppIBitmapFrame)
return E_INVALIDARG;
EnterCriticalSection(&This->lock);
if (!This->stream || index >= This->file_info.frame_count)
hr = WINCODEC_ERR_FRAMEMISSING;
if (SUCCEEDED(hr))
{
result = HeapAlloc(GetProcessHeap(), 0, sizeof(*result));
if (!result)
hr = E_OUTOFMEMORY;
}
if (SUCCEEDED(hr))
{
result->IWICBitmapFrameDecode_iface.lpVtbl = &CommonDecoderFrameVtbl;
result->IWICMetadataBlockReader_iface.lpVtbl = &CommonDecoderFrame_BlockVtbl;
result->ref = 1;
result->parent = This;
result->frame = index;
result->metadata_initialized = FALSE;
result->metadata_count = 0;
result->metadata_blocks = NULL;
hr = decoder_get_frame_info(This->decoder, index, &result->decoder_frame);
if (SUCCEEDED(hr) && This->cache_options == WICDecodeMetadataCacheOnLoad)
hr = CommonDecoderFrame_InitializeMetadata(result);
if (FAILED(hr))
HeapFree(GetProcessHeap(), 0, result);
}
LeaveCriticalSection(&This->lock);
if (SUCCEEDED(hr))
{
TRACE("-> %ux%u, %u-bit pixelformat=%s res=%f,%f colors=%u contexts=%u\n",
result->decoder_frame.width, result->decoder_frame.height,
result->decoder_frame.bpp, wine_dbgstr_guid(&result->decoder_frame.pixel_format),
result->decoder_frame.dpix, result->decoder_frame.dpiy,
result->decoder_frame.num_colors, result->decoder_frame.num_color_contexts);
IWICBitmapDecoder_AddRef(&This->IWICBitmapDecoder_iface);
*ppIBitmapFrame = &result->IWICBitmapFrameDecode_iface;
}
else
{
*ppIBitmapFrame = NULL;
}
return hr;
}
HRESULT CommonDecoder_CreateInstance(struct decoder *decoder,
const struct decoder_info *decoder_info, REFIID iid, void** ppv)
{
CommonDecoder *This;
HRESULT hr;
TRACE("(%s,%s,%p)\n", debugstr_guid(&decoder_info->clsid), debugstr_guid(iid), ppv);
This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
if (!This)
{
decoder_destroy(decoder);
return E_OUTOFMEMORY;
}
This->IWICBitmapDecoder_iface.lpVtbl = &CommonDecoder_Vtbl;
This->ref = 1;
This->stream = NULL;
This->decoder = decoder;
This->decoder_info = *decoder_info;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": CommonDecoder.lock");
hr = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
return hr;
}