gdiplus: Implement GdipSaveImageToStream using encoders.
Add the correct framework for a fully-functional implementation of image encoding (not a hack like before). Currently, only a stub for BMP encoding is supported. New tests added as well.
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@ -834,17 +834,93 @@ GpStatus WINGDIPAPI GdipSaveImageToFile(GpImage *image, GDIPCONST WCHAR* filenam
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return stat;
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return stat;
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}
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}
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/*************************************************************************
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* Encoding functions -
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* These functions encode an image in different image file formats.
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*/
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static GpStatus encode_image_BMP(LPVOID bitmap_bits, LPBITMAPINFO bitmap_info,
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void **output, unsigned int *output_size)
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{
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return NotImplemented;
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}
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typedef GpStatus encode_image_func(LPVOID bitmap_bits, LPBITMAPINFO bitmap_info,
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void **output, unsigned int *output_size);
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typedef enum {
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BMP,
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NUM_ENCODERS_SUPPORTED
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} ImageFormat;
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static const ImageCodecInfo codecs[NUM_ENCODERS_SUPPORTED];
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static encode_image_func *const encode_image_funcs[NUM_ENCODERS_SUPPORTED] = {
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encode_image_BMP,
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};
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GpStatus WINGDIPAPI GdipSaveImageToStream(GpImage *image, IStream* stream,
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GpStatus WINGDIPAPI GdipSaveImageToStream(GpImage *image, IStream* stream,
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GDIPCONST CLSID* clsid, GDIPCONST EncoderParameters* params)
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GDIPCONST CLSID* clsid, GDIPCONST EncoderParameters* params)
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{
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{
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GpStatus stat;
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HRESULT hr;
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short type;
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HBITMAP hbmp;
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HDC hdc;
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BITMAPINFO bmp_info;
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LPVOID bmp_bits;
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encode_image_func* encode_image;
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LPVOID output;
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unsigned int output_size;
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unsigned int dummy;
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int i;
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output = NULL;
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output_size = 0;
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if(!image || !stream)
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if(!image || !stream)
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return InvalidParameter;
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return InvalidParameter;
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/* FIXME: CLSID, EncoderParameters not used */
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if (!image->picture)
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return GenericError;
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IPicture_SaveAsFile(image->picture, stream, FALSE, NULL);
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hr = IPicture_get_Type(image->picture, &type);
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if (FAILED(hr) || type != PICTYPE_BITMAP)
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return GenericError;
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return Ok;
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/* select correct encoder */
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encode_image = NULL;
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for (i = 0; i < NUM_ENCODERS_SUPPORTED; i++) {
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if (IsEqualCLSID(clsid, &codecs[i].Clsid))
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encode_image = encode_image_funcs[i];
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}
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if (encode_image == NULL)
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return UnknownImageFormat;
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/* extract underlying hbitmap representation from the IPicture */
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hr = IPicture_get_Handle(image->picture, (OLE_HANDLE*)&hbmp);
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if (FAILED(hr) || !hbmp)
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return GenericError;
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/* get bits from HBITMAP */
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hdc = GetDC(0);
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bmp_info.bmiHeader.biSize = sizeof(bmp_info.bmiHeader);
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GetDIBits(hdc, hbmp, 0, 0, NULL, &bmp_info, DIB_RGB_COLORS);
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bmp_bits = GdipAlloc(bmp_info.bmiHeader.biSizeImage);
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if (!bmp_bits) {
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ReleaseDC(0, hdc);
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return OutOfMemory;
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}
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GetDIBits(hdc, hbmp, 0, bmp_info.bmiHeader.biHeight, bmp_bits, &bmp_info, DIB_RGB_COLORS);
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stat = encode_image(bmp_bits, &bmp_info, &output, &output_size);
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if (stat == Ok)
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IStream_Write(stream, output, output_size, &dummy);
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GdipFree(output);
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GdipFree(bmp_bits);
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ReleaseDC(0, hdc);
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return stat;
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}
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}
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GpStatus WINGDIPAPI GdipSetImagePalette(GpImage *image,
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GpStatus WINGDIPAPI GdipSetImagePalette(GpImage *image,
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@ -866,11 +942,6 @@ GpStatus WINGDIPAPI GdipSetImagePalette(GpImage *image,
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* Structures that represent which formats we support for encoding.
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* Structures that represent which formats we support for encoding.
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*/
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*/
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typedef enum {
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BMP,
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NUM_ENCODERS_SUPPORTED
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} ImageFormat;
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/* ImageCodecInfo creation routines taken from libgdiplus */
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/* ImageCodecInfo creation routines taken from libgdiplus */
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static const WCHAR bmp_codecname[] = {'B', 'u', 'i','l', 't', '-','i', 'n', ' ', 'B', 'M', 'P', 0}; /* Built-in BMP */
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static const WCHAR bmp_codecname[] = {'B', 'u', 'i','l', 't', '-','i', 'n', ' ', 'B', 'M', 'P', 0}; /* Built-in BMP */
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static const WCHAR bmp_extension[] = {'*','.','B', 'M', 'P',';', '*','.', 'D','I', 'B',';', '*','.', 'R', 'L', 'E',0}; /* *.BMP;*.DIB;*.RLE */
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static const WCHAR bmp_extension[] = {'*','.','B', 'M', 'P',';', '*','.', 'D','I', 'B',';', '*','.', 'R', 'L', 'E',0}; /* *.BMP;*.DIB;*.RLE */
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@ -159,8 +159,10 @@ static void test_SavingImages(void)
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stat = GdipGetImageEncoders(n, s, codecs);
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stat = GdipGetImageEncoders(n, s, codecs);
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if (stat != Ok) goto cleanup;
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if (stat != Ok) goto cleanup;
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stat = GdipSaveImageToFile((GpImage*)bm, filename, &codecs[0].Clsid, 0);
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todo_wine {
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expect(stat, Ok);
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stat = GdipSaveImageToFile((GpImage*)bm, filename, &codecs[0].Clsid, 0);
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expect(stat, Ok);
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}
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cleanup:
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cleanup:
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if (codecs)
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if (codecs)
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