Sweden-Number/dlls/windowscodecs/jpegformat.c

1510 lines
42 KiB
C

/*
* Copyright 2009 Vincent Povirk for CodeWeavers
*
* 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 "config.h"
#include "wine/port.h"
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#ifdef SONAME_LIBJPEG
/* This is a hack, so jpeglib.h does not redefine INT32 and the like*/
#define XMD_H
#define UINT8 JPEG_UINT8
#define UINT16 JPEG_UINT16
#define boolean jpeg_boolean
#undef HAVE_STDLIB_H
# include <jpeglib.h>
#undef HAVE_STDLIB_H
#define HAVE_STDLIB_H 1
#undef UINT8
#undef UINT16
#undef boolean
#endif
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodec.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
#include "wine/library.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
#ifdef SONAME_LIBJPEG
WINE_DECLARE_DEBUG_CHANNEL(jpeg);
static void *libjpeg_handle;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
MAKE_FUNCPTR(jpeg_CreateCompress);
MAKE_FUNCPTR(jpeg_CreateDecompress);
MAKE_FUNCPTR(jpeg_destroy_compress);
MAKE_FUNCPTR(jpeg_destroy_decompress);
MAKE_FUNCPTR(jpeg_finish_compress);
MAKE_FUNCPTR(jpeg_read_header);
MAKE_FUNCPTR(jpeg_read_scanlines);
MAKE_FUNCPTR(jpeg_resync_to_restart);
MAKE_FUNCPTR(jpeg_set_defaults);
MAKE_FUNCPTR(jpeg_start_compress);
MAKE_FUNCPTR(jpeg_start_decompress);
MAKE_FUNCPTR(jpeg_std_error);
MAKE_FUNCPTR(jpeg_write_scanlines);
#undef MAKE_FUNCPTR
static void *load_libjpeg(void)
{
if((libjpeg_handle = wine_dlopen(SONAME_LIBJPEG, RTLD_NOW, NULL, 0)) != NULL) {
#define LOAD_FUNCPTR(f) \
if((p##f = wine_dlsym(libjpeg_handle, #f, NULL, 0)) == NULL) { \
libjpeg_handle = NULL; \
return NULL; \
}
LOAD_FUNCPTR(jpeg_CreateCompress);
LOAD_FUNCPTR(jpeg_CreateDecompress);
LOAD_FUNCPTR(jpeg_destroy_compress);
LOAD_FUNCPTR(jpeg_destroy_decompress);
LOAD_FUNCPTR(jpeg_finish_compress);
LOAD_FUNCPTR(jpeg_read_header);
LOAD_FUNCPTR(jpeg_read_scanlines);
LOAD_FUNCPTR(jpeg_resync_to_restart);
LOAD_FUNCPTR(jpeg_set_defaults);
LOAD_FUNCPTR(jpeg_start_compress);
LOAD_FUNCPTR(jpeg_start_decompress);
LOAD_FUNCPTR(jpeg_std_error);
LOAD_FUNCPTR(jpeg_write_scanlines);
#undef LOAD_FUNCPTR
}
return libjpeg_handle;
}
static void error_exit_fn(j_common_ptr cinfo)
{
char message[JMSG_LENGTH_MAX];
if (ERR_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
ERR_(jpeg)("%s\n", message);
}
longjmp(*(jmp_buf*)cinfo->client_data, 1);
}
static void emit_message_fn(j_common_ptr cinfo, int msg_level)
{
char message[JMSG_LENGTH_MAX];
if (msg_level < 0 && ERR_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
ERR_(jpeg)("%s\n", message);
}
else if (msg_level == 0 && WARN_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
WARN_(jpeg)("%s\n", message);
}
else if (msg_level > 0 && TRACE_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
TRACE_(jpeg)("%s\n", message);
}
}
typedef struct {
IWICBitmapDecoder IWICBitmapDecoder_iface;
IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
LONG ref;
BOOL initialized;
BOOL cinfo_initialized;
IStream *stream;
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
struct jpeg_source_mgr source_mgr;
BYTE source_buffer[1024];
BYTE *image_data;
CRITICAL_SECTION lock;
} JpegDecoder;
static inline JpegDecoder *impl_from_IWICBitmapDecoder(IWICBitmapDecoder *iface)
{
return CONTAINING_RECORD(iface, JpegDecoder, IWICBitmapDecoder_iface);
}
static inline JpegDecoder *impl_from_IWICBitmapFrameDecode(IWICBitmapFrameDecode *iface)
{
return CONTAINING_RECORD(iface, JpegDecoder, IWICBitmapFrameDecode_iface);
}
static inline JpegDecoder *decoder_from_decompress(j_decompress_ptr decompress)
{
return CONTAINING_RECORD(decompress, JpegDecoder, cinfo);
}
static HRESULT WINAPI JpegDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
void **ppv)
{
JpegDecoder *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 JpegDecoder_AddRef(IWICBitmapDecoder *iface)
{
JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI JpegDecoder_Release(IWICBitmapDecoder *iface)
{
JpegDecoder *This = impl_from_IWICBitmapDecoder(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->cinfo_initialized) pjpeg_destroy_decompress(&This->cinfo);
if (This->stream) IStream_Release(This->stream);
HeapFree(GetProcessHeap(), 0, This->image_data);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI JpegDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *stream,
DWORD *capability)
{
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 = WICBitmapDecoderCapabilityCanDecodeAllImages |
WICBitmapDecoderCapabilityCanDecodeSomeImages;
/* FIXME: WICBitmapDecoderCapabilityCanEnumerateMetadata */
return S_OK;
}
static void source_mgr_init_source(j_decompress_ptr cinfo)
{
}
static jpeg_boolean source_mgr_fill_input_buffer(j_decompress_ptr cinfo)
{
JpegDecoder *This = decoder_from_decompress(cinfo);
HRESULT hr;
ULONG bytesread;
hr = IStream_Read(This->stream, This->source_buffer, 1024, &bytesread);
if (hr != S_OK || bytesread == 0)
{
return FALSE;
}
else
{
This->source_mgr.next_input_byte = This->source_buffer;
This->source_mgr.bytes_in_buffer = bytesread;
return TRUE;
}
}
static void source_mgr_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
{
JpegDecoder *This = decoder_from_decompress(cinfo);
LARGE_INTEGER seek;
if (num_bytes > This->source_mgr.bytes_in_buffer)
{
seek.QuadPart = num_bytes - This->source_mgr.bytes_in_buffer;
IStream_Seek(This->stream, seek, STREAM_SEEK_CUR, NULL);
This->source_mgr.bytes_in_buffer = 0;
}
else if (num_bytes > 0)
{
This->source_mgr.next_input_byte += num_bytes;
This->source_mgr.bytes_in_buffer -= num_bytes;
}
}
static void source_mgr_term_source(j_decompress_ptr cinfo)
{
}
static HRESULT WINAPI JpegDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
WICDecodeOptions cacheOptions)
{
JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
int ret;
LARGE_INTEGER seek;
jmp_buf jmpbuf;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOptions);
EnterCriticalSection(&This->lock);
if (This->cinfo_initialized)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
pjpeg_std_error(&This->jerr);
This->jerr.error_exit = error_exit_fn;
This->jerr.emit_message = emit_message_fn;
This->cinfo.err = &This->jerr;
This->cinfo.client_data = jmpbuf;
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
pjpeg_CreateDecompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_decompress_struct));
This->cinfo_initialized = TRUE;
This->stream = pIStream;
IStream_AddRef(pIStream);
seek.QuadPart = 0;
IStream_Seek(This->stream, seek, STREAM_SEEK_SET, NULL);
This->source_mgr.bytes_in_buffer = 0;
This->source_mgr.init_source = source_mgr_init_source;
This->source_mgr.fill_input_buffer = source_mgr_fill_input_buffer;
This->source_mgr.skip_input_data = source_mgr_skip_input_data;
This->source_mgr.resync_to_restart = pjpeg_resync_to_restart;
This->source_mgr.term_source = source_mgr_term_source;
This->cinfo.src = &This->source_mgr;
ret = pjpeg_read_header(&This->cinfo, TRUE);
if (ret != JPEG_HEADER_OK) {
WARN("Jpeg image in stream has bad format, read header returned %d.\n",ret);
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
switch (This->cinfo.jpeg_color_space)
{
case JCS_GRAYSCALE:
This->cinfo.out_color_space = JCS_GRAYSCALE;
break;
case JCS_RGB:
case JCS_YCbCr:
This->cinfo.out_color_space = JCS_RGB;
break;
case JCS_CMYK:
case JCS_YCCK:
This->cinfo.out_color_space = JCS_CMYK;
break;
default:
ERR("Unknown JPEG color space %i\n", This->cinfo.jpeg_color_space);
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
if (!pjpeg_start_decompress(&This->cinfo))
{
ERR("jpeg_start_decompress failed\n");
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
This->initialized = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
GUID *pguidContainerFormat)
{
memcpy(pguidContainerFormat, &GUID_ContainerFormatJpeg, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI JpegDecoder_GetDecoderInfo(IWICBitmapDecoder *iface,
IWICBitmapDecoderInfo **ppIDecoderInfo)
{
HRESULT hr;
IWICComponentInfo *compinfo;
TRACE("(%p,%p)\n", iface, ppIDecoderInfo);
hr = CreateComponentInfo(&CLSID_WICJpegDecoder, &compinfo);
if (FAILED(hr)) return hr;
hr = IWICComponentInfo_QueryInterface(compinfo, &IID_IWICBitmapDecoderInfo,
(void**)ppIDecoderInfo);
IWICComponentInfo_Release(compinfo);
return hr;
}
static HRESULT WINAPI JpegDecoder_CopyPalette(IWICBitmapDecoder *iface,
IWICPalette *pIPalette)
{
TRACE("(%p,%p)\n", iface, pIPalette);
return WINCODEC_ERR_PALETTEUNAVAILABLE;
}
static HRESULT WINAPI JpegDecoder_GetMetadataQueryReader(IWICBitmapDecoder *iface,
IWICMetadataQueryReader **ppIMetadataQueryReader)
{
FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
return E_NOTIMPL;
}
static HRESULT WINAPI JpegDecoder_GetPreview(IWICBitmapDecoder *iface,
IWICBitmapSource **ppIBitmapSource)
{
FIXME("(%p,%p): stub\n", iface, ppIBitmapSource);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegDecoder_GetColorContexts(IWICBitmapDecoder *iface,
UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
{
FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegDecoder_GetThumbnail(IWICBitmapDecoder *iface,
IWICBitmapSource **ppIThumbnail)
{
FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
return WINCODEC_ERR_CODECNOTHUMBNAIL;
}
static HRESULT WINAPI JpegDecoder_GetFrameCount(IWICBitmapDecoder *iface,
UINT *pCount)
{
if (!pCount) return E_INVALIDARG;
*pCount = 1;
return S_OK;
}
static HRESULT WINAPI JpegDecoder_GetFrame(IWICBitmapDecoder *iface,
UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
{
JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
if (!This->initialized) return WINCODEC_ERR_FRAMEMISSING;
if (index != 0) return E_INVALIDARG;
IWICBitmapDecoder_AddRef(iface);
*ppIBitmapFrame = &This->IWICBitmapFrameDecode_iface;
return S_OK;
}
static const IWICBitmapDecoderVtbl JpegDecoder_Vtbl = {
JpegDecoder_QueryInterface,
JpegDecoder_AddRef,
JpegDecoder_Release,
JpegDecoder_QueryCapability,
JpegDecoder_Initialize,
JpegDecoder_GetContainerFormat,
JpegDecoder_GetDecoderInfo,
JpegDecoder_CopyPalette,
JpegDecoder_GetMetadataQueryReader,
JpegDecoder_GetPreview,
JpegDecoder_GetColorContexts,
JpegDecoder_GetThumbnail,
JpegDecoder_GetFrameCount,
JpegDecoder_GetFrame
};
static HRESULT WINAPI JpegDecoder_Frame_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
void **ppv)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapSource, iid) ||
IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
{
*ppv = &This->IWICBitmapFrameDecode_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI JpegDecoder_Frame_AddRef(IWICBitmapFrameDecode *iface)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
return IWICBitmapDecoder_AddRef(&This->IWICBitmapDecoder_iface);
}
static ULONG WINAPI JpegDecoder_Frame_Release(IWICBitmapFrameDecode *iface)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
return IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
}
static HRESULT WINAPI JpegDecoder_Frame_GetSize(IWICBitmapFrameDecode *iface,
UINT *puiWidth, UINT *puiHeight)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
*puiWidth = This->cinfo.output_width;
*puiHeight = This->cinfo.output_height;
TRACE("(%p)->(%u,%u)\n", iface, *puiWidth, *puiHeight);
return S_OK;
}
static HRESULT WINAPI JpegDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *iface,
WICPixelFormatGUID *pPixelFormat)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
TRACE("(%p,%p)\n", iface, pPixelFormat);
if (This->cinfo.out_color_space == JCS_RGB)
memcpy(pPixelFormat, &GUID_WICPixelFormat24bppBGR, sizeof(GUID));
else if (This->cinfo.out_color_space == JCS_CMYK)
memcpy(pPixelFormat, &GUID_WICPixelFormat32bppCMYK, sizeof(GUID));
else /* This->cinfo.out_color_space == JCS_GRAYSCALE */
memcpy(pPixelFormat, &GUID_WICPixelFormat8bppGray, sizeof(GUID));
return S_OK;
}
static HRESULT WINAPI JpegDecoder_Frame_GetResolution(IWICBitmapFrameDecode *iface,
double *pDpiX, double *pDpiY)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
EnterCriticalSection(&This->lock);
if (This->cinfo.density_unit == 2) /* pixels per centimeter */
{
*pDpiX = This->cinfo.X_density * 2.54;
*pDpiY = This->cinfo.Y_density * 2.54;
}
else
{
/* 1 = pixels per inch, 0 = unknown */
*pDpiX = This->cinfo.X_density;
*pDpiY = This->cinfo.Y_density;
}
LeaveCriticalSection(&This->lock);
TRACE("(%p)->(%0.2f,%0.2f)\n", iface, *pDpiX, *pDpiY);
return S_OK;
}
static HRESULT WINAPI JpegDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
IWICPalette *pIPalette)
{
FIXME("(%p,%p): stub\n", iface, pIPalette);
return E_NOTIMPL;
}
static HRESULT WINAPI JpegDecoder_Frame_CopyPixels(IWICBitmapFrameDecode *iface,
const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
{
JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
UINT bpp;
UINT stride;
UINT data_size;
UINT max_row_needed;
jmp_buf jmpbuf;
WICRect rect;
TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
if (!prc)
{
rect.X = 0;
rect.Y = 0;
rect.Width = This->cinfo.output_width;
rect.Height = This->cinfo.output_height;
prc = &rect;
}
else
{
if (prc->X < 0 || prc->Y < 0 || prc->X+prc->Width > This->cinfo.output_width ||
prc->Y+prc->Height > This->cinfo.output_height)
return E_INVALIDARG;
}
if (This->cinfo.out_color_space == JCS_GRAYSCALE) bpp = 8;
else if (This->cinfo.out_color_space == JCS_CMYK) bpp = 32;
else bpp = 24;
stride = bpp * This->cinfo.output_width;
data_size = stride * This->cinfo.output_height;
max_row_needed = prc->Y + prc->Height;
if (max_row_needed > This->cinfo.output_height) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
if (!This->image_data)
{
This->image_data = HeapAlloc(GetProcessHeap(), 0, data_size);
if (!This->image_data)
{
LeaveCriticalSection(&This->lock);
return E_OUTOFMEMORY;
}
}
This->cinfo.client_data = jmpbuf;
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
while (max_row_needed > This->cinfo.output_scanline)
{
UINT first_scanline = This->cinfo.output_scanline;
UINT max_rows;
JSAMPROW out_rows[4];
UINT i;
JDIMENSION ret;
max_rows = min(This->cinfo.output_height-first_scanline, 4);
for (i=0; i<max_rows; i++)
out_rows[i] = This->image_data + stride * (first_scanline+i);
ret = pjpeg_read_scanlines(&This->cinfo, out_rows, max_rows);
if (ret == 0)
{
ERR("read_scanlines failed\n");
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
if (bpp == 24)
{
/* libjpeg gives us RGB data and we want BGR, so byteswap the data */
reverse_bgr8(3, This->image_data + stride * first_scanline,
This->cinfo.output_width, This->cinfo.output_scanline - first_scanline,
stride);
}
if (This->cinfo.out_color_space == JCS_CMYK && This->cinfo.saw_Adobe_marker)
/* Adobe JPEG's have inverted CMYK data. */
for (i=0; i<data_size; i++)
This->image_data[i] ^= 0xff;
}
LeaveCriticalSection(&This->lock);
return copy_pixels(bpp, This->image_data,
This->cinfo.output_width, This->cinfo.output_height, stride,
prc, cbStride, cbBufferSize, pbBuffer);
}
static HRESULT WINAPI JpegDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
IWICMetadataQueryReader **ppIMetadataQueryReader)
{
FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *iface,
UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
{
FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
IWICBitmapSource **ppIThumbnail)
{
FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
return WINCODEC_ERR_CODECNOTHUMBNAIL;
}
static const IWICBitmapFrameDecodeVtbl JpegDecoder_Frame_Vtbl = {
JpegDecoder_Frame_QueryInterface,
JpegDecoder_Frame_AddRef,
JpegDecoder_Frame_Release,
JpegDecoder_Frame_GetSize,
JpegDecoder_Frame_GetPixelFormat,
JpegDecoder_Frame_GetResolution,
JpegDecoder_Frame_CopyPalette,
JpegDecoder_Frame_CopyPixels,
JpegDecoder_Frame_GetMetadataQueryReader,
JpegDecoder_Frame_GetColorContexts,
JpegDecoder_Frame_GetThumbnail
};
HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
JpegDecoder *This;
HRESULT ret;
TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
if (!libjpeg_handle && !load_libjpeg())
{
ERR("Failed reading JPEG because unable to find %s\n", SONAME_LIBJPEG);
return E_FAIL;
}
*ppv = NULL;
if (pUnkOuter) return CLASS_E_NOAGGREGATION;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegDecoder));
if (!This) return E_OUTOFMEMORY;
This->IWICBitmapDecoder_iface.lpVtbl = &JpegDecoder_Vtbl;
This->IWICBitmapFrameDecode_iface.lpVtbl = &JpegDecoder_Frame_Vtbl;
This->ref = 1;
This->initialized = FALSE;
This->cinfo_initialized = FALSE;
This->stream = NULL;
This->image_data = NULL;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegDecoder.lock");
ret = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
return ret;
}
typedef struct jpeg_compress_format {
const WICPixelFormatGUID *guid;
int bpp;
int num_components;
J_COLOR_SPACE color_space;
int swap_rgb;
} jpeg_compress_format;
static const jpeg_compress_format compress_formats[] = {
{ &GUID_WICPixelFormat24bppBGR, 24, 3, JCS_RGB, 1 },
{ &GUID_WICPixelFormat32bppCMYK, 32, 4, JCS_CMYK },
{ &GUID_WICPixelFormat8bppGray, 8, 1, JCS_GRAYSCALE },
{ 0 }
};
typedef struct JpegEncoder {
IWICBitmapEncoder IWICBitmapEncoder_iface;
IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
LONG ref;
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
struct jpeg_destination_mgr dest_mgr;
int initialized;
int frame_count;
int frame_initialized;
int started_compress;
int lines_written;
int frame_committed;
int committed;
UINT width, height;
double xres, yres;
const jpeg_compress_format *format;
IStream *stream;
CRITICAL_SECTION lock;
BYTE dest_buffer[1024];
} JpegEncoder;
static inline JpegEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
{
return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapEncoder_iface);
}
static inline JpegEncoder *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
{
return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapFrameEncode_iface);
}
static inline JpegEncoder *encoder_from_compress(j_compress_ptr compress)
{
return CONTAINING_RECORD(compress, JpegEncoder, cinfo);
}
static void dest_mgr_init_destination(j_compress_ptr cinfo)
{
JpegEncoder *This = encoder_from_compress(cinfo);
This->dest_mgr.next_output_byte = This->dest_buffer;
This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
}
static jpeg_boolean dest_mgr_empty_output_buffer(j_compress_ptr cinfo)
{
JpegEncoder *This = encoder_from_compress(cinfo);
HRESULT hr;
ULONG byteswritten;
hr = IStream_Write(This->stream, This->dest_buffer,
sizeof(This->dest_buffer), &byteswritten);
if (hr != S_OK || byteswritten == 0)
{
ERR("Failed writing data, hr=%x\n", hr);
return FALSE;
}
This->dest_mgr.next_output_byte = This->dest_buffer;
This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
return TRUE;
}
static void dest_mgr_term_destination(j_compress_ptr cinfo)
{
JpegEncoder *This = encoder_from_compress(cinfo);
ULONG byteswritten;
HRESULT hr;
if (This->dest_mgr.free_in_buffer != sizeof(This->dest_buffer))
{
hr = IStream_Write(This->stream, This->dest_buffer,
sizeof(This->dest_buffer) - This->dest_mgr.free_in_buffer, &byteswritten);
if (hr != S_OK || byteswritten == 0)
ERR("Failed writing data, hr=%x\n", hr);
}
}
static HRESULT WINAPI JpegEncoder_Frame_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
void **ppv)
{
JpegEncoder *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 JpegEncoder_Frame_AddRef(IWICBitmapFrameEncode *iface)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
return IWICBitmapEncoder_AddRef(&This->IWICBitmapEncoder_iface);
}
static ULONG WINAPI JpegEncoder_Frame_Release(IWICBitmapFrameEncode *iface)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
return IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
}
static HRESULT WINAPI JpegEncoder_Frame_Initialize(IWICBitmapFrameEncode *iface,
IPropertyBag2 *pIEncoderOptions)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%p)\n", iface, pIEncoderOptions);
EnterCriticalSection(&This->lock);
if (This->frame_initialized)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->frame_initialized = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Frame_SetSize(IWICBitmapFrameEncode *iface,
UINT uiWidth, UINT uiHeight)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || This->started_compress)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->width = uiWidth;
This->height = uiHeight;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Frame_SetResolution(IWICBitmapFrameEncode *iface,
double dpiX, double dpiY)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || This->started_compress)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->xres = dpiX;
This->yres = dpiY;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Frame_SetPixelFormat(IWICBitmapFrameEncode *iface,
WICPixelFormatGUID *pPixelFormat)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
int i;
TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || This->started_compress)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
for (i=0; compress_formats[i].guid; i++)
{
if (memcmp(compress_formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
break;
}
if (!compress_formats[i].guid) i = 0;
This->format = &compress_formats[i];
memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Frame_SetColorContexts(IWICBitmapFrameEncode *iface,
UINT cCount, IWICColorContext **ppIColorContext)
{
FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
return E_NOTIMPL;
}
static HRESULT WINAPI JpegEncoder_Frame_SetPalette(IWICBitmapFrameEncode *iface,
IWICPalette *pIPalette)
{
FIXME("(%p,%p): stub\n", iface, pIPalette);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegEncoder_Frame_SetThumbnail(IWICBitmapFrameEncode *iface,
IWICBitmapSource *pIThumbnail)
{
FIXME("(%p,%p): stub\n", iface, pIThumbnail);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegEncoder_Frame_WritePixels(IWICBitmapFrameEncode *iface,
UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
jmp_buf jmpbuf;
BYTE *swapped_data = NULL, *current_row;
int line, row_size;
TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
EnterCriticalSection(&This->lock);
if (!This->frame_initialized || !This->width || !This->height || !This->format)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
if (lineCount == 0 || lineCount + This->lines_written > This->height)
{
LeaveCriticalSection(&This->lock);
return E_INVALIDARG;
}
/* set up setjmp/longjmp error handling */
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, swapped_data);
return E_FAIL;
}
This->cinfo.client_data = &jmpbuf;
if (!This->started_compress)
{
This->cinfo.image_width = This->width;
This->cinfo.image_height = This->height;
This->cinfo.input_components = This->format->num_components;
This->cinfo.in_color_space = This->format->color_space;
pjpeg_set_defaults(&This->cinfo);
if (This->xres != 0.0 && This->yres != 0.0)
{
This->cinfo.density_unit = 1; /* dots per inch */
This->cinfo.X_density = This->xres;
This->cinfo.Y_density = This->yres;
}
pjpeg_start_compress(&This->cinfo, TRUE);
This->started_compress = 1;
}
row_size = This->format->bpp / 8 * This->width;
if (This->format->swap_rgb)
{
swapped_data = HeapAlloc(GetProcessHeap(), 0, row_size);
if (!swapped_data)
{
LeaveCriticalSection(&This->lock);
return E_OUTOFMEMORY;
}
}
for (line=0; line < lineCount; line++)
{
if (This->format->swap_rgb)
{
int x;
memcpy(swapped_data, pbPixels + (cbStride * line), row_size);
for (x=0; x < This->width; x++)
{
BYTE b;
b = swapped_data[x*3];
swapped_data[x*3] = swapped_data[x*3+2];
swapped_data[x*3+2] = b;
}
current_row = swapped_data;
}
else
current_row = pbPixels + (cbStride * line);
if (!pjpeg_write_scanlines(&This->cinfo, &current_row, 1))
{
ERR("failed writing scanlines\n");
LeaveCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, swapped_data);
return E_FAIL;
}
This->lines_written++;
}
LeaveCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, swapped_data);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Frame_WriteSource(IWICBitmapFrameEncode *iface,
IWICBitmapSource *pIBitmapSource, WICRect *prc)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
HRESULT hr;
WICRect rc;
WICPixelFormatGUID guid;
UINT stride;
BYTE *pixeldata;
TRACE("(%p,%p,%p)\n", iface, pIBitmapSource, prc);
if (!This->frame_initialized || !This->width || !This->height)
return WINCODEC_ERR_WRONGSTATE;
if (!This->format)
{
hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
if (FAILED(hr)) return hr;
hr = IWICBitmapFrameEncode_SetPixelFormat(iface, &guid);
if (FAILED(hr)) return hr;
}
hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
if (FAILED(hr)) return hr;
if (memcmp(&guid, This->format->guid, sizeof(GUID)) != 0)
{
/* FIXME: should use WICConvertBitmapSource to convert */
ERR("format %s unsupported\n", debugstr_guid(&guid));
return E_FAIL;
}
if (This->xres == 0.0 || This->yres == 0.0)
{
double xres, yres;
hr = IWICBitmapSource_GetResolution(pIBitmapSource, &xres, &yres);
if (FAILED(hr)) return hr;
hr = IWICBitmapFrameEncode_SetResolution(iface, xres, yres);
if (FAILED(hr)) return hr;
}
if (!prc)
{
UINT width, height;
hr = IWICBitmapSource_GetSize(pIBitmapSource, &width, &height);
if (FAILED(hr)) return hr;
rc.X = 0;
rc.Y = 0;
rc.Width = width;
rc.Height = height;
prc = &rc;
}
if (prc->Width != This->width) return E_INVALIDARG;
stride = (This->format->bpp * This->width + 7)/8;
pixeldata = HeapAlloc(GetProcessHeap(), 0, stride * prc->Height);
if (!pixeldata) return E_OUTOFMEMORY;
hr = IWICBitmapSource_CopyPixels(pIBitmapSource, prc, stride,
stride*prc->Height, pixeldata);
if (SUCCEEDED(hr))
{
hr = IWICBitmapFrameEncode_WritePixels(iface, prc->Height, stride,
stride*prc->Height, pixeldata);
}
HeapFree(GetProcessHeap(), 0, pixeldata);
return hr;
}
static HRESULT WINAPI JpegEncoder_Frame_Commit(IWICBitmapFrameEncode *iface)
{
JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
jmp_buf jmpbuf;
TRACE("(%p)\n", iface);
EnterCriticalSection(&This->lock);
if (!This->started_compress || This->lines_written != This->height || This->frame_committed)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
/* set up setjmp/longjmp error handling */
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
This->cinfo.client_data = &jmpbuf;
pjpeg_finish_compress(&This->cinfo);
This->frame_committed = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Frame_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
IWICMetadataQueryWriter **ppIMetadataQueryWriter)
{
FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
return E_NOTIMPL;
}
static const IWICBitmapFrameEncodeVtbl JpegEncoder_FrameVtbl = {
JpegEncoder_Frame_QueryInterface,
JpegEncoder_Frame_AddRef,
JpegEncoder_Frame_Release,
JpegEncoder_Frame_Initialize,
JpegEncoder_Frame_SetSize,
JpegEncoder_Frame_SetResolution,
JpegEncoder_Frame_SetPixelFormat,
JpegEncoder_Frame_SetColorContexts,
JpegEncoder_Frame_SetPalette,
JpegEncoder_Frame_SetThumbnail,
JpegEncoder_Frame_WritePixels,
JpegEncoder_Frame_WriteSource,
JpegEncoder_Frame_Commit,
JpegEncoder_Frame_GetMetadataQueryWriter
};
static HRESULT WINAPI JpegEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
void **ppv)
{
JpegEncoder *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 JpegEncoder_AddRef(IWICBitmapEncoder *iface)
{
JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI JpegEncoder_Release(IWICBitmapEncoder *iface)
{
JpegEncoder *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->initialized) pjpeg_destroy_compress(&This->cinfo);
if (This->stream) IStream_Release(This->stream);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI JpegEncoder_Initialize(IWICBitmapEncoder *iface,
IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
{
JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
jmp_buf jmpbuf;
TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
EnterCriticalSection(&This->lock);
if (This->initialized)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
pjpeg_std_error(&This->jerr);
This->jerr.error_exit = error_exit_fn;
This->jerr.emit_message = emit_message_fn;
This->cinfo.err = &This->jerr;
This->cinfo.client_data = &jmpbuf;
if (setjmp(jmpbuf))
{
LeaveCriticalSection(&This->lock);
return E_FAIL;
}
pjpeg_CreateCompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_compress_struct));
This->stream = pIStream;
IStream_AddRef(pIStream);
This->dest_mgr.next_output_byte = This->dest_buffer;
This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
This->dest_mgr.init_destination = dest_mgr_init_destination;
This->dest_mgr.empty_output_buffer = dest_mgr_empty_output_buffer;
This->dest_mgr.term_destination = dest_mgr_term_destination;
This->cinfo.dest = &This->dest_mgr;
This->initialized = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_GetContainerFormat(IWICBitmapEncoder *iface,
GUID *pguidContainerFormat)
{
FIXME("(%p,%s): stub\n", iface, debugstr_guid(pguidContainerFormat));
return E_NOTIMPL;
}
static HRESULT WINAPI JpegEncoder_GetEncoderInfo(IWICBitmapEncoder *iface,
IWICBitmapEncoderInfo **ppIEncoderInfo)
{
FIXME("(%p,%p): stub\n", iface, ppIEncoderInfo);
return E_NOTIMPL;
}
static HRESULT WINAPI JpegEncoder_SetColorContexts(IWICBitmapEncoder *iface,
UINT cCount, IWICColorContext **ppIColorContext)
{
FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
return E_NOTIMPL;
}
static HRESULT WINAPI JpegEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *pIPalette)
{
TRACE("(%p,%p)\n", iface, pIPalette);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
{
TRACE("(%p,%p)\n", iface, pIThumbnail);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
{
TRACE("(%p,%p)\n", iface, pIPreview);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
{
JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
HRESULT hr;
TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
EnterCriticalSection(&This->lock);
if (This->frame_count != 0)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
if (!This->initialized)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_NOTINITIALIZED;
}
hr = CreatePropertyBag2(ppIEncoderOptions);
if (FAILED(hr))
{
LeaveCriticalSection(&This->lock);
return hr;
}
This->frame_count = 1;
LeaveCriticalSection(&This->lock);
IWICBitmapEncoder_AddRef(iface);
*ppIFrameEncode = &This->IWICBitmapFrameEncode_iface;
return S_OK;
}
static HRESULT WINAPI JpegEncoder_Commit(IWICBitmapEncoder *iface)
{
JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
TRACE("(%p)\n", iface);
EnterCriticalSection(&This->lock);
if (!This->frame_committed || This->committed)
{
LeaveCriticalSection(&This->lock);
return WINCODEC_ERR_WRONGSTATE;
}
This->committed = TRUE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI JpegEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
IWICMetadataQueryWriter **ppIMetadataQueryWriter)
{
FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
return E_NOTIMPL;
}
static const IWICBitmapEncoderVtbl JpegEncoder_Vtbl = {
JpegEncoder_QueryInterface,
JpegEncoder_AddRef,
JpegEncoder_Release,
JpegEncoder_Initialize,
JpegEncoder_GetContainerFormat,
JpegEncoder_GetEncoderInfo,
JpegEncoder_SetColorContexts,
JpegEncoder_SetPalette,
JpegEncoder_SetThumbnail,
JpegEncoder_SetPreview,
JpegEncoder_CreateNewFrame,
JpegEncoder_Commit,
JpegEncoder_GetMetadataQueryWriter
};
HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
JpegEncoder *This;
HRESULT ret;
TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
*ppv = NULL;
if (pUnkOuter) return CLASS_E_NOAGGREGATION;
if (!libjpeg_handle && !load_libjpeg())
{
ERR("Failed writing JPEG because unable to find %s\n",SONAME_LIBJPEG);
return E_FAIL;
}
This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegEncoder));
if (!This) return E_OUTOFMEMORY;
This->IWICBitmapEncoder_iface.lpVtbl = &JpegEncoder_Vtbl;
This->IWICBitmapFrameEncode_iface.lpVtbl = &JpegEncoder_FrameVtbl;
This->ref = 1;
This->initialized = 0;
This->frame_count = 0;
This->frame_initialized = 0;
This->started_compress = 0;
This->lines_written = 0;
This->frame_committed = 0;
This->committed = 0;
This->width = This->height = 0;
This->xres = This->yres = 0.0;
This->format = NULL;
This->stream = NULL;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegEncoder.lock");
ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
return ret;
}
#else /* !defined(SONAME_LIBJPEG) */
HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
ERR("Trying to load JPEG picture, but JPEG support is not compiled in.\n");
return E_FAIL;
}
HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
ERR("Trying to save JPEG picture, but JPEG support is not compiled in.\n");
return E_FAIL;
}
#endif