mirror of
https://github.com/webmproject/libwebp.git
synced 2024-12-27 22:28:22 +01:00
cwebp: extract WIC decoding to its own module
Change-Id: I8e3e20787f6c3cc0616bd33beb2a6ccdda1e04f7
This commit is contained in:
James Zern
parent
2b252a53a8
commit
a452a5554a
@ -176,6 +176,7 @@ EX_FORMAT_DEC_OBJS = \
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$(DIROBJ)\examples/metadata.obj \
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$(DIROBJ)\examples/pngdec.obj \
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$(DIROBJ)\examples/tiffdec.obj \
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$(DIROBJ)\examples/wicdec.obj \
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EX_UTIL_OBJS = \
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$(DIROBJ)\examples\example_util.obj \
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@ -24,6 +24,7 @@ cwebp_SOURCES = cwebp.c metadata.c metadata.h stopwatch.h
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cwebp_SOURCES += jpegdec.c jpegdec.h
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cwebp_SOURCES += pngdec.c pngdec.h
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cwebp_SOURCES += tiffdec.c tiffdec.h
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cwebp_SOURCES += wicdec.c wicdec.h
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cwebp_CPPFLAGS = $(AM_CPPFLAGS) $(USE_EXPERIMENTAL_CODE)
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cwebp_CPPFLAGS += $(JPEG_INCLUDES) $(PNG_INCLUDES) $(TIFF_INCLUDES)
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cwebp_LDADD = ../src/libwebp.la $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)
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191
examples/cwebp.c
191
examples/cwebp.c
@ -18,20 +18,6 @@
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#include "config.h"
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#endif
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#ifdef HAVE_WINCODEC_H
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#ifdef __MINGW32__
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#define INITGUID // Without this GUIDs are declared extern and fail to link
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#endif
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#define CINTERFACE
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#define COBJMACROS
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#define _WIN32_IE 0x500 // Workaround bug in shlwapi.h when compiling C++
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// code with COBJMACROS.
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#include <shlwapi.h>
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#include <windows.h>
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#include <wincodec.h>
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#endif /* HAVE_WINCODEC_H */
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#include "webp/encode.h"
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#include "./metadata.h"
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@ -40,6 +26,7 @@
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#include "./jpegdec.h"
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#include "./pngdec.h"
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#include "./tiffdec.h"
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#include "./wicdec.h"
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#ifndef WEBP_DLL
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#if defined(__cplusplus) || defined(c_plusplus)
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@ -89,180 +76,6 @@ static int ReadYUV(FILE* in_file, WebPPicture* const pic) {
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#ifdef HAVE_WINCODEC_H
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#define IFS(fn) \
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do { \
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if (SUCCEEDED(hr)) { \
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hr = (fn); \
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if (FAILED(hr)) fprintf(stderr, #fn " failed %08x\n", hr); \
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} \
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} while (0)
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// modified version of DEFINE_GUID from guiddef.h.
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#define WEBP_DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
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const GUID name = { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
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#ifdef __cplusplus
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#define MAKE_REFGUID(x) (x)
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#else
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#define MAKE_REFGUID(x) &(x)
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#endif
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typedef struct WICFormatImporter {
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const GUID* pixel_format;
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int bytes_per_pixel;
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int (*import)(WebPPicture* const, const uint8_t* const, int);
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} WICFormatImporter;
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static HRESULT OpenInputStream(const char* filename, IStream** ppStream) {
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HRESULT hr = S_OK;
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IFS(SHCreateStreamOnFileA(filename, STGM_READ, ppStream));
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if (FAILED(hr))
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fprintf(stderr, "Error opening input file %s (%08x)\n", filename, hr);
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return hr;
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}
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static HRESULT ReadPictureWithWIC(const char* filename,
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WebPPicture* const pic, int keep_alpha) {
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// From Microsoft SDK 7.0a -- wincodec.h
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// Create local copies for compatibility when building against earlier
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// versions of the SDK.
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WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppBGR_,
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0x6fddc324, 0x4e03, 0x4bfe,
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0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0c);
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WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppRGB_,
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0x6fddc324, 0x4e03, 0x4bfe,
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0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
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WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppBGRA_,
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0x6fddc324, 0x4e03, 0x4bfe,
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0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0f);
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WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppRGBA_,
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0xf5c7ad2d, 0x6a8d, 0x43dd,
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0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9);
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const WICFormatImporter alphaFormatImporters[] = {
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{ &GUID_WICPixelFormat32bppBGRA_, 4, WebPPictureImportBGRA },
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{ &GUID_WICPixelFormat32bppRGBA_, 4, WebPPictureImportRGBA },
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{ NULL, 0, NULL },
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};
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const WICFormatImporter nonAlphaFormatImporters[] = {
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{ &GUID_WICPixelFormat24bppBGR_, 3, WebPPictureImportBGR },
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{ &GUID_WICPixelFormat24bppRGB_, 3, WebPPictureImportRGB },
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{ NULL, 0, NULL },
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};
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HRESULT hr = S_OK;
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IWICBitmapFrameDecode* pFrame = NULL;
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IWICFormatConverter* pConverter = NULL;
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IWICImagingFactory* pFactory = NULL;
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IWICBitmapDecoder* pDecoder = NULL;
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IStream* pStream = NULL;
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UINT frameCount = 0;
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UINT width = 0, height = 0;
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BYTE* rgb = NULL;
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WICPixelFormatGUID srcPixelFormat = { 0 };
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const WICFormatImporter* importer = NULL;
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GUID srcContainerFormat = { 0 };
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const GUID* alphaContainers[] = {
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&GUID_ContainerFormatBmp,
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&GUID_ContainerFormatPng,
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&GUID_ContainerFormatTiff
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};
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int has_alpha = 0;
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int i, stride;
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IFS(CoInitialize(NULL));
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IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
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CLSCTX_INPROC_SERVER, MAKE_REFGUID(IID_IWICImagingFactory),
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(LPVOID*)&pFactory));
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if (hr == REGDB_E_CLASSNOTREG) {
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fprintf(stderr,
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"Couldn't access Windows Imaging Component (are you running "
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"Windows XP SP3 or newer?). Most formats not available. "
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"Use -s for the available YUV input.\n");
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}
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// Prepare for image decoding.
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IFS(OpenInputStream(filename, &pStream));
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IFS(IWICImagingFactory_CreateDecoderFromStream(pFactory, pStream, NULL,
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WICDecodeMetadataCacheOnDemand, &pDecoder));
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IFS(IWICBitmapDecoder_GetFrameCount(pDecoder, &frameCount));
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if (SUCCEEDED(hr) && frameCount == 0) {
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fprintf(stderr, "No frame found in input file.\n");
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hr = E_FAIL;
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}
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IFS(IWICBitmapDecoder_GetFrame(pDecoder, 0, &pFrame));
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IFS(IWICBitmapFrameDecode_GetPixelFormat(pFrame, &srcPixelFormat));
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IFS(IWICBitmapDecoder_GetContainerFormat(pDecoder, &srcContainerFormat));
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if (keep_alpha) {
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for (i = 0;
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i < sizeof(alphaContainers) / sizeof(alphaContainers[0]);
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++i) {
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if (IsEqualGUID(MAKE_REFGUID(srcContainerFormat),
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MAKE_REFGUID(*alphaContainers[i]))) {
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has_alpha =
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IsEqualGUID(MAKE_REFGUID(srcPixelFormat),
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MAKE_REFGUID(GUID_WICPixelFormat32bppRGBA_)) ||
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IsEqualGUID(MAKE_REFGUID(srcPixelFormat),
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MAKE_REFGUID(GUID_WICPixelFormat32bppBGRA_));
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break;
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}
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}
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}
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// Prepare for pixel format conversion (if necessary).
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IFS(IWICImagingFactory_CreateFormatConverter(pFactory, &pConverter));
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for (importer = has_alpha ? alphaFormatImporters : nonAlphaFormatImporters;
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hr == S_OK && importer->import != NULL; ++importer) {
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BOOL canConvert;
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const HRESULT cchr = IWICFormatConverter_CanConvert(
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pConverter,
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MAKE_REFGUID(srcPixelFormat),
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MAKE_REFGUID(*importer->pixel_format),
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&canConvert);
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if (SUCCEEDED(cchr) && canConvert) break;
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}
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if (importer->import == NULL) hr = E_FAIL;
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IFS(IWICFormatConverter_Initialize(pConverter, (IWICBitmapSource*)pFrame,
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importer->pixel_format,
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WICBitmapDitherTypeNone,
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NULL, 0.0, WICBitmapPaletteTypeCustom));
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// Decode.
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IFS(IWICFormatConverter_GetSize(pConverter, &width, &height));
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stride = importer->bytes_per_pixel * width * sizeof(*rgb);
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if (SUCCEEDED(hr)) {
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rgb = (BYTE*)malloc(stride * height);
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if (rgb == NULL)
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hr = E_OUTOFMEMORY;
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}
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IFS(IWICFormatConverter_CopyPixels(pConverter, NULL, stride,
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stride * height, rgb));
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// WebP conversion.
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if (SUCCEEDED(hr)) {
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int ok;
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pic->width = width;
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pic->height = height;
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ok = importer->import(pic, rgb, stride);
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if (!ok)
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hr = E_FAIL;
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}
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if (SUCCEEDED(hr)) {
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if (has_alpha && keep_alpha == 2) {
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WebPCleanupTransparentArea(pic);
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}
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}
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// Cleanup.
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if (pConverter != NULL) IUnknown_Release(pConverter);
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if (pFrame != NULL) IUnknown_Release(pFrame);
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if (pDecoder != NULL) IUnknown_Release(pDecoder);
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if (pFactory != NULL) IUnknown_Release(pFactory);
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if (pStream != NULL) IUnknown_Release(pStream);
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free(rgb);
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return hr;
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}
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static int ReadPicture(const char* const filename, WebPPicture* const pic,
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int keep_alpha, Metadata* const metadata) {
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int ok;
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@ -278,7 +91,7 @@ static int ReadPicture(const char* const filename, WebPPicture* const pic,
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fclose(in_file);
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} else {
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// If no size specified, try to decode it using WIC.
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ok = SUCCEEDED(ReadPictureWithWIC(filename, pic, keep_alpha));
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ok = ReadPictureWithWIC(filename, pic, keep_alpha);
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}
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if (!ok) {
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fprintf(stderr, "Error! Could not process file %s\n", filename);
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219
examples/wicdec.c
Normal file
219
examples/wicdec.c
Normal file
@ -0,0 +1,219 @@
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// Copyright 2013 Google Inc. All Rights Reserved.
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//
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// This code is licensed under the same terms as WebM:
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// Software License Agreement: http://www.webmproject.org/license/software/
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// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
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// -----------------------------------------------------------------------------
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//
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// Windows Imaging Component (WIC) decode.
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#include "./wicdec.h"
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#ifdef HAVE_WINCODEC_H
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#ifdef __MINGW32__
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#define INITGUID // Without this GUIDs are declared extern and fail to link
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#endif
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#define CINTERFACE
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#define COBJMACROS
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#define _WIN32_IE 0x500 // Workaround bug in shlwapi.h when compiling C++
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// code with COBJMACROS.
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#include <shlwapi.h>
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#include <windows.h>
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#include <wincodec.h>
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#include "webp/encode.h"
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#define IFS(fn) \
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do { \
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if (SUCCEEDED(hr)) { \
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hr = (fn); \
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if (FAILED(hr)) fprintf(stderr, #fn " failed %08x\n", hr); \
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} \
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} while (0)
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// modified version of DEFINE_GUID from guiddef.h.
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#define WEBP_DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
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const GUID name = { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
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#ifdef __cplusplus
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#define MAKE_REFGUID(x) (x)
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#else
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#define MAKE_REFGUID(x) &(x)
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#endif
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typedef struct WICFormatImporter {
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const GUID* pixel_format;
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int bytes_per_pixel;
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int (*import)(WebPPicture* const, const uint8_t* const, int);
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} WICFormatImporter;
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static HRESULT OpenInputStream(const char* filename, IStream** ppStream) {
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HRESULT hr = S_OK;
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IFS(SHCreateStreamOnFileA(filename, STGM_READ, ppStream));
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if (FAILED(hr))
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fprintf(stderr, "Error opening input file %s (%08x)\n", filename, hr);
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return hr;
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}
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int ReadPictureWithWIC(const char* const filename,
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WebPPicture* const pic, int keep_alpha) {
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// From Microsoft SDK 7.0a -- wincodec.h
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// Create local copies for compatibility when building against earlier
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// versions of the SDK.
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WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppBGR_,
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0x6fddc324, 0x4e03, 0x4bfe,
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0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0c);
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WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppRGB_,
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0x6fddc324, 0x4e03, 0x4bfe,
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0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
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WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppBGRA_,
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0x6fddc324, 0x4e03, 0x4bfe,
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0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0f);
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WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppRGBA_,
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0xf5c7ad2d, 0x6a8d, 0x43dd,
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0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9);
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const WICFormatImporter alphaFormatImporters[] = {
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{ &GUID_WICPixelFormat32bppBGRA_, 4, WebPPictureImportBGRA },
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{ &GUID_WICPixelFormat32bppRGBA_, 4, WebPPictureImportRGBA },
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{ NULL, 0, NULL },
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};
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const WICFormatImporter nonAlphaFormatImporters[] = {
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{ &GUID_WICPixelFormat24bppBGR_, 3, WebPPictureImportBGR },
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{ &GUID_WICPixelFormat24bppRGB_, 3, WebPPictureImportRGB },
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{ NULL, 0, NULL },
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};
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HRESULT hr = S_OK;
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IWICBitmapFrameDecode* pFrame = NULL;
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IWICFormatConverter* pConverter = NULL;
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IWICImagingFactory* pFactory = NULL;
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IWICBitmapDecoder* pDecoder = NULL;
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IStream* pStream = NULL;
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UINT frameCount = 0;
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UINT width = 0, height = 0;
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BYTE* rgb = NULL;
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WICPixelFormatGUID srcPixelFormat = { 0 };
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const WICFormatImporter* importer = NULL;
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GUID srcContainerFormat = { 0 };
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const GUID* alphaContainers[] = {
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&GUID_ContainerFormatBmp,
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&GUID_ContainerFormatPng,
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&GUID_ContainerFormatTiff
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};
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int has_alpha = 0;
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int i, stride;
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IFS(CoInitialize(NULL));
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IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
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CLSCTX_INPROC_SERVER, MAKE_REFGUID(IID_IWICImagingFactory),
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(LPVOID*)&pFactory));
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if (hr == REGDB_E_CLASSNOTREG) {
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fprintf(stderr,
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"Couldn't access Windows Imaging Component (are you running "
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"Windows XP SP3 or newer?). Most formats not available. "
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"Use -s for the available YUV input.\n");
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}
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// Prepare for image decoding.
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IFS(OpenInputStream(filename, &pStream));
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IFS(IWICImagingFactory_CreateDecoderFromStream(pFactory, pStream, NULL,
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WICDecodeMetadataCacheOnDemand, &pDecoder));
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IFS(IWICBitmapDecoder_GetFrameCount(pDecoder, &frameCount));
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if (SUCCEEDED(hr) && frameCount == 0) {
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fprintf(stderr, "No frame found in input file.\n");
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hr = E_FAIL;
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}
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IFS(IWICBitmapDecoder_GetFrame(pDecoder, 0, &pFrame));
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IFS(IWICBitmapFrameDecode_GetPixelFormat(pFrame, &srcPixelFormat));
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IFS(IWICBitmapDecoder_GetContainerFormat(pDecoder, &srcContainerFormat));
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if (keep_alpha) {
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for (i = 0;
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i < sizeof(alphaContainers) / sizeof(alphaContainers[0]);
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++i) {
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if (IsEqualGUID(MAKE_REFGUID(srcContainerFormat),
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MAKE_REFGUID(*alphaContainers[i]))) {
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has_alpha =
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IsEqualGUID(MAKE_REFGUID(srcPixelFormat),
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MAKE_REFGUID(GUID_WICPixelFormat32bppRGBA_)) ||
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IsEqualGUID(MAKE_REFGUID(srcPixelFormat),
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MAKE_REFGUID(GUID_WICPixelFormat32bppBGRA_));
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break;
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}
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}
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}
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// Prepare for pixel format conversion (if necessary).
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IFS(IWICImagingFactory_CreateFormatConverter(pFactory, &pConverter));
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for (importer = has_alpha ? alphaFormatImporters : nonAlphaFormatImporters;
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hr == S_OK && importer->import != NULL; ++importer) {
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BOOL canConvert;
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const HRESULT cchr = IWICFormatConverter_CanConvert(
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pConverter,
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MAKE_REFGUID(srcPixelFormat),
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MAKE_REFGUID(*importer->pixel_format),
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&canConvert);
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if (SUCCEEDED(cchr) && canConvert) break;
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}
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if (importer->import == NULL) hr = E_FAIL;
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|
||||
IFS(IWICFormatConverter_Initialize(pConverter, (IWICBitmapSource*)pFrame,
|
||||
importer->pixel_format,
|
||||
WICBitmapDitherTypeNone,
|
||||
NULL, 0.0, WICBitmapPaletteTypeCustom));
|
||||
|
||||
// Decode.
|
||||
IFS(IWICFormatConverter_GetSize(pConverter, &width, &height));
|
||||
stride = importer->bytes_per_pixel * width * sizeof(*rgb);
|
||||
if (SUCCEEDED(hr)) {
|
||||
rgb = (BYTE*)malloc(stride * height);
|
||||
if (rgb == NULL)
|
||||
hr = E_OUTOFMEMORY;
|
||||
}
|
||||
IFS(IWICFormatConverter_CopyPixels(pConverter, NULL, stride,
|
||||
stride * height, rgb));
|
||||
|
||||
// WebP conversion.
|
||||
if (SUCCEEDED(hr)) {
|
||||
int ok;
|
||||
pic->width = width;
|
||||
pic->height = height;
|
||||
ok = importer->import(pic, rgb, stride);
|
||||
if (!ok)
|
||||
hr = E_FAIL;
|
||||
}
|
||||
if (SUCCEEDED(hr)) {
|
||||
if (has_alpha && keep_alpha == 2) {
|
||||
WebPCleanupTransparentArea(pic);
|
||||
}
|
||||
}
|
||||
|
||||
// Cleanup.
|
||||
if (pConverter != NULL) IUnknown_Release(pConverter);
|
||||
if (pFrame != NULL) IUnknown_Release(pFrame);
|
||||
if (pDecoder != NULL) IUnknown_Release(pDecoder);
|
||||
if (pFactory != NULL) IUnknown_Release(pFactory);
|
||||
if (pStream != NULL) IUnknown_Release(pStream);
|
||||
free(rgb);
|
||||
return SUCCEEDED(hr);
|
||||
}
|
||||
#else // !HAVE_WINCODEC_H
|
||||
int ReadPictureWithWIC(const char* const filename,
|
||||
struct WebPPicture* const pic, int keep_alpha) {
|
||||
(void)filename;
|
||||
(void)pic;
|
||||
(void)keep_alpha;
|
||||
fprintf(stderr, "Windows Imaging Component (WIC) support not compiled. "
|
||||
"Visual Studio and mingw-w64 builds support WIC. Make sure "
|
||||
"wincodec.h detection is working correctly if using autoconf "
|
||||
"and HAVE_WINCODEC_H is defined before building.\n");
|
||||
return 0;
|
||||
}
|
||||
#endif // HAVE_WINCODEC_H
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
30
examples/wicdec.h
Normal file
30
examples/wicdec.h
Normal file
@ -0,0 +1,30 @@
|
||||
// Copyright 2013 Google Inc. All Rights Reserved.
|
||||
//
|
||||
// This code is licensed under the same terms as WebM:
|
||||
// Software License Agreement: http://www.webmproject.org/license/software/
|
||||
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
|
||||
// -----------------------------------------------------------------------------
|
||||
//
|
||||
// Windows Imaging Component (WIC) decode.
|
||||
|
||||
#ifndef WEBP_EXAMPLES_WICDEC_H_
|
||||
#define WEBP_EXAMPLES_WICDEC_H_
|
||||
|
||||
#if defined(__cplusplus) || defined(c_plusplus)
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
struct WebPPicture;
|
||||
|
||||
// Reads an image from 'filename', returning the decoded output in 'pic'.
|
||||
// If 'keep_alpha' is true and the image has an alpha channel, the output is
|
||||
// RGBA otherwise it will be RGB.
|
||||
// Returns true on success.
|
||||
int ReadPictureWithWIC(const char* const filename,
|
||||
struct WebPPicture* const pic, int keep_alpha);
|
||||
|
||||
#if defined(__cplusplus) || defined(c_plusplus)
|
||||
} // extern "C"
|
||||
#endif
|
||||
|
||||
#endif // WEBP_EXAMPLES_WICDEC_H_
|
||||
Loading…
Reference in New Issue
Block a user