mirror of
https://github.com/webmproject/libwebp.git
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297 lines
11 KiB
C
297 lines
11 KiB
C
// 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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#include "./metadata.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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// Stores the first non-zero sized color profile from 'pFrame' to 'iccp'.
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// Returns an HRESULT to indicate success or failure. The caller is responsible
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// for freeing 'iccp->bytes' in either case.
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static HRESULT ExtractICCP(IWICImagingFactory* const pFactory,
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IWICBitmapFrameDecode* const pFrame,
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MetadataPayload* const iccp) {
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HRESULT hr = S_OK;
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UINT i, count;
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IWICColorContext** ppColorContext;
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IFS(IWICBitmapFrameDecode_GetColorContexts(pFrame, 0, NULL, &count));
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if (FAILED(hr) || count == 0) return hr;
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ppColorContext = (IWICColorContext**)calloc(count, sizeof(*ppColorContext));
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if (ppColorContext == NULL) return E_OUTOFMEMORY;
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for (i = 0; SUCCEEDED(hr) && i < count; ++i) {
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IFS(IWICImagingFactory_CreateColorContext(pFactory, &ppColorContext[i]));
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}
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if (SUCCEEDED(hr)) {
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UINT num_color_contexts;
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IFS(IWICBitmapFrameDecode_GetColorContexts(pFrame,
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count, ppColorContext,
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&num_color_contexts));
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for (i = 0; SUCCEEDED(hr) && i < num_color_contexts; ++i) {
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WICColorContextType type;
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IFS(IWICColorContext_GetType(ppColorContext[i], &type));
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if (SUCCEEDED(hr) && type == WICColorContextProfile) {
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UINT size;
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IFS(IWICColorContext_GetProfileBytes(ppColorContext[i],
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0, NULL, &size));
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if (size > 0) {
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iccp->bytes = (uint8_t*)malloc(size);
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if (iccp->bytes == NULL) {
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hr = E_OUTOFMEMORY;
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break;
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}
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iccp->size = size;
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IFS(IWICColorContext_GetProfileBytes(ppColorContext[i],
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(UINT)iccp->size, iccp->bytes,
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&size));
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if (SUCCEEDED(hr) && size != iccp->size) {
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fprintf(stderr, "Warning! ICC profile size (%u) != expected (%u)\n",
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size, iccp->size);
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iccp->size = size;
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}
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break;
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}
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}
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}
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}
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for (i = 0; i < count; ++i) {
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if (ppColorContext[i] != NULL) IUnknown_Release(ppColorContext[i]);
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}
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free(ppColorContext);
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return hr;
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}
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static HRESULT ExtractMetadata(IWICImagingFactory* const pFactory,
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IWICBitmapFrameDecode* const pFrame,
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Metadata* const metadata) {
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// TODO(jzern): add XMP/EXIF extraction.
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const HRESULT hr = ExtractICCP(pFactory, pFrame, &metadata->iccp);
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if (FAILED(hr)) MetadataFree(metadata);
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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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Metadata* const metadata) {
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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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if (metadata != NULL) {
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hr = ExtractMetadata(pFactory, pFrame, metadata);
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if (FAILED(hr)) {
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fprintf(stderr, "Error extracting image metadata using WIC!\n");
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}
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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 SUCCEEDED(hr);
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}
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#else // !HAVE_WINCODEC_H
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int ReadPictureWithWIC(const char* const filename,
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struct WebPPicture* const pic, int keep_alpha,
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struct Metadata* const metadata) {
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(void)filename;
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(void)pic;
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(void)keep_alpha;
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(void)metadata;
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fprintf(stderr, "Windows Imaging Component (WIC) support not compiled. "
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"Visual Studio and mingw-w64 builds support WIC. Make sure "
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"wincodec.h detection is working correctly if using autoconf "
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"and HAVE_WINCODEC_H is defined before building.\n");
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return 0;
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}
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#endif // HAVE_WINCODEC_H
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// -----------------------------------------------------------------------------
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