bool ImageLoaderFreeImage::loadInputImage(const QString &imageFileName, QString &errorMessage)
{
bool result = false;
FreeImageErrorMessage.clear();
const FREE_IMAGE_FORMAT fileType = FreeImage_GetFileType(imageFileName.toAscii(), 0);
FIBITMAP* newImage = FreeImage_Load(fileType, imageFileName.toAscii(), TIFF_CMYK|JPEG_CMYK);
// Filter out images which FreeImage can load but not convert to Rgb24
// And images which we simply don't handle
if (newImage) {
const FREE_IMAGE_TYPE type = FreeImage_GetImageType(newImage);
if (type != FIT_BITMAP // 1pbb Monochrome, 1-8bpp Palette, 8bpp Greyscale,
// 24bpp Rgb, 32bpp Argb, 32bpp Cmyk
&& type != FIT_RGB16 // 16bpp Greyscale, 48bpp Rgb
) {
FreeImage_Unload(newImage);
newImage = NULL;
}
}
if (newImage) {
result = true;
disposeImage();
m_bitmap = newImage;
m_widthPixels = FreeImage_GetWidth(m_bitmap);
m_heightPixels = FreeImage_GetHeight(m_bitmap);
m_horizontalDotsPerMeter = FreeImage_GetDotsPerMeterX(m_bitmap);
m_verticalDotsPerMeter = FreeImage_GetDotsPerMeterY(m_bitmap);
if (m_horizontalDotsPerMeter == 0)
m_horizontalDotsPerMeter = 2835; // 72 dpi
if (m_verticalDotsPerMeter == 0)
m_verticalDotsPerMeter = 2835;
m_imageFileName = imageFileName;
if (colorDataType() == Types::ColorTypeRGB && bitsPerPixel() == 32) {
// Sometimes, there are strange .PSD images like this (FreeImage bug?)
RGBQUAD white = { 255, 255, 255, 0 };
FIBITMAP *Image24Bit = FreeImage_Composite(m_bitmap, FALSE, &white);
FreeImage_Unload(m_bitmap);
m_bitmap = Image24Bit;
}
}
errorMessage = FreeImageErrorMessage;
return result;
}
BOOL DLL_CALLCONV
FreeImage_CloneMetadata(FIBITMAP *dst, FIBITMAP *src) {
if(!src || !dst) {
return FALSE;
}
// get metadata links
METADATAMAP *src_metadata = ((FREEIMAGEHEADER *)src->data)->metadata;
METADATAMAP *dst_metadata = ((FREEIMAGEHEADER *)dst->data)->metadata;
// copy metadata models, *except* the FIMD_ANIMATION model
for(METADATAMAP::iterator i = (*src_metadata).begin(); i != (*src_metadata).end(); i++) {
int model = (*i).first;
if(model == (int)FIMD_ANIMATION) {
continue;
}
TAGMAP *src_tagmap = (*i).second;
if(src_tagmap) {
if( dst_metadata->find(model) != dst_metadata->end() ) {
// destroy dst model
FreeImage_SetMetadata((FREE_IMAGE_MDMODEL)model, dst, NULL, NULL);
}
// create a metadata model
TAGMAP *dst_tagmap = new(std::nothrow) TAGMAP();
if(dst_tagmap) {
// fill the model
for(TAGMAP::iterator j = src_tagmap->begin(); j != src_tagmap->end(); j++) {
std::string dst_key = (*j).first;
FITAG *dst_tag = FreeImage_CloneTag( (*j).second );
// assign key and tag value
(*dst_tagmap)[dst_key] = dst_tag;
}
// assign model and tagmap
(*dst_metadata)[model] = dst_tagmap;
}
}
}
// clone resolution
FreeImage_SetDotsPerMeterX(dst, FreeImage_GetDotsPerMeterX(src));
FreeImage_SetDotsPerMeterY(dst, FreeImage_GetDotsPerMeterY(src));
return TRUE;
}
static BOOL DLL_CALLCONV
Save(FreeImageIO *io, FIBITMAP *dib, fi_handle handle, int page, int flags, void *data) {
png_structp png_ptr;
png_infop info_ptr;
png_colorp palette = NULL;
png_uint_32 width, height;
BOOL has_alpha_channel = FALSE;
RGBQUAD *pal; // pointer to dib palette
int bit_depth, pixel_depth; // pixel_depth = bit_depth * channels
int palette_entries;
int interlace_type;
fi_ioStructure fio;
fio.s_handle = handle;
fio.s_io = io;
if ((dib) && (handle)) {
try {
// create the chunk manage structure
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, error_handler, warning_handler);
if (!png_ptr) {
return FALSE;
}
// allocate/initialize the image information data.
info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr) {
png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
return FALSE;
}
// Set error handling. REQUIRED if you aren't supplying your own
// error handling functions in the png_create_write_struct() call.
if (setjmp(png_jmpbuf(png_ptr))) {
// if we get here, we had a problem reading the file
png_destroy_write_struct(&png_ptr, &info_ptr);
return FALSE;
}
// init the IO
png_set_write_fn(png_ptr, &fio, _WriteProc, _FlushProc);
// set physical resolution
png_uint_32 res_x = (png_uint_32)FreeImage_GetDotsPerMeterX(dib);
png_uint_32 res_y = (png_uint_32)FreeImage_GetDotsPerMeterY(dib);
if ((res_x > 0) && (res_y > 0)) {
png_set_pHYs(png_ptr, info_ptr, res_x, res_y, PNG_RESOLUTION_METER);
}
// Set the image information here. Width and height are up to 2^31,
// bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
// the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
// PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,
// or PNG_COLOR_TYPE_RGB_ALPHA. interlace is either PNG_INTERLACE_NONE or
// PNG_INTERLACE_ADAM7, and the compression_type and filter_type MUST
// currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE. REQUIRED
width = FreeImage_GetWidth(dib);
height = FreeImage_GetHeight(dib);
pixel_depth = FreeImage_GetBPP(dib);
BOOL bInterlaced = FALSE;
if( (flags & PNG_INTERLACED) == PNG_INTERLACED) {
interlace_type = PNG_INTERLACE_ADAM7;
bInterlaced = TRUE;
} else {
interlace_type = PNG_INTERLACE_NONE;
}
// set the ZLIB compression level or default to PNG default compression level (ZLIB level = 6)
int zlib_level = flags & 0x0F;
if((zlib_level >= 1) && (zlib_level <= 9)) {
png_set_compression_level(png_ptr, zlib_level);
} else if((flags & PNG_Z_NO_COMPRESSION) == PNG_Z_NO_COMPRESSION) {
png_set_compression_level(png_ptr, Z_NO_COMPRESSION);
}
// filtered strategy works better for high color images
if(pixel_depth >= 16){
png_set_compression_strategy(png_ptr, Z_FILTERED);
png_set_filter(png_ptr, 0, PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_PAETH);
} else {
png_set_compression_strategy(png_ptr, Z_DEFAULT_STRATEGY);
}
FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib);
if(image_type == FIT_BITMAP) {
// standard image type
bit_depth = (pixel_depth > 8) ? 8 : pixel_depth;
} else {
// 16-bit greyscale or 16-bit RGB(A)
bit_depth = 16;
}
switch (FreeImage_GetColorType(dib)) {
case FIC_MINISWHITE:
// Invert monochrome files to have 0 as black and 1 as white (no break here)
png_set_invert_mono(png_ptr);
case FIC_MINISBLACK:
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
PNG_COLOR_TYPE_GRAY, interlace_type,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
break;
case FIC_PALETTE:
{
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
PNG_COLOR_TYPE_PALETTE, interlace_type,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
// set the palette
palette_entries = 1 << bit_depth;
palette = (png_colorp)png_malloc(png_ptr, palette_entries * sizeof (png_color));
pal = FreeImage_GetPalette(dib);
for (int i = 0; i < palette_entries; i++) {
palette[i].red = pal[i].rgbRed;
palette[i].green = pal[i].rgbGreen;
palette[i].blue = pal[i].rgbBlue;
}
png_set_PLTE(png_ptr, info_ptr, palette, palette_entries);
// You must not free palette here, because png_set_PLTE only makes a link to
// the palette that you malloced. Wait until you are about to destroy
// the png structure.
break;
}
case FIC_RGBALPHA :
has_alpha_channel = TRUE;
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
PNG_COLOR_TYPE_RGBA, interlace_type,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
#if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR
// flip BGR pixels to RGB
if(image_type == FIT_BITMAP) {
png_set_bgr(png_ptr);
}
#endif
break;
case FIC_RGB:
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
PNG_COLOR_TYPE_RGB, interlace_type,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
#if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR
// flip BGR pixels to RGB
if(image_type == FIT_BITMAP) {
png_set_bgr(png_ptr);
}
#endif
break;
case FIC_CMYK:
break;
}
// write possible ICC profile
FIICCPROFILE *iccProfile = FreeImage_GetICCProfile(dib);
if (iccProfile->size && iccProfile->data) {
png_set_iCCP(png_ptr, info_ptr, "Embedded Profile", 0, (png_const_bytep)iccProfile->data, iccProfile->size);
}
// write metadata
WriteMetadata(png_ptr, info_ptr, dib);
// Optional gamma chunk is strongly suggested if you have any guess
// as to the correct gamma of the image.
// png_set_gAMA(png_ptr, info_ptr, gamma);
// set the transparency table
if (FreeImage_IsTransparent(dib) && (FreeImage_GetTransparencyCount(dib) > 0)) {
png_set_tRNS(png_ptr, info_ptr, FreeImage_GetTransparencyTable(dib), FreeImage_GetTransparencyCount(dib), NULL);
}
// set the background color
if(FreeImage_HasBackgroundColor(dib)) {
png_color_16 image_background;
RGBQUAD rgbBkColor;
FreeImage_GetBackgroundColor(dib, &rgbBkColor);
memset(&image_background, 0, sizeof(png_color_16));
image_background.blue = rgbBkColor.rgbBlue;
image_background.green = rgbBkColor.rgbGreen;
image_background.red = rgbBkColor.rgbRed;
image_background.index = rgbBkColor.rgbReserved;
png_set_bKGD(png_ptr, info_ptr, &image_background);
}
// Write the file header information.
png_write_info(png_ptr, info_ptr);
// write out the image data
#ifndef FREEIMAGE_BIGENDIAN
if (bit_depth == 16) {
// turn on 16 bit byte swapping
png_set_swap(png_ptr);
}
#endif
int number_passes = 1;
if (bInterlaced) {
number_passes = png_set_interlace_handling(png_ptr);
}
if ((pixel_depth == 32) && (!has_alpha_channel)) {
BYTE *buffer = (BYTE *)malloc(width * 3);
// transparent conversion to 24-bit
// the number of passes is either 1 for non-interlaced images, or 7 for interlaced images
for (int pass = 0; pass < number_passes; pass++) {
for (png_uint_32 k = 0; k < height; k++) {
FreeImage_ConvertLine32To24(buffer, FreeImage_GetScanLine(dib, height - k - 1), width);
png_write_row(png_ptr, buffer);
}
}
free(buffer);
} else {
// the number of passes is either 1 for non-interlaced images, or 7 for interlaced images
for (int pass = 0; pass < number_passes; pass++) {
for (png_uint_32 k = 0; k < height; k++) {
png_write_row(png_ptr, FreeImage_GetScanLine(dib, height - k - 1));
}
}
}
// It is REQUIRED to call this to finish writing the rest of the file
// Bug with png_flush
png_write_end(png_ptr, info_ptr);
// clean up after the write, and free any memory allocated
if (palette) {
png_free(png_ptr, palette);
}
png_destroy_write_struct(&png_ptr, &info_ptr);
return TRUE;
} catch (const char *text) {
FreeImage_OutputMessageProc(s_format_id, text);
}
}
return FALSE;
}
double fipImage::getHorizontalResolution() const {
return (FreeImage_GetDotsPerMeterX(_dib) / (double)100);
}
static BOOL DLL_CALLCONV
Save(FreeImageIO *io, FIBITMAP *dib, fi_handle handle, int page, int flags, void *data) {
if ((dib) && (handle)) {
try {
// Check dib format
const char *sError = "only 24-bit highcolor or 8-bit greyscale/palette bitmaps can be saved as JPEG";
FREE_IMAGE_COLOR_TYPE color_type = FreeImage_GetColorType(dib);
WORD bpp = (WORD)FreeImage_GetBPP(dib);
if ((bpp != 24) && (bpp != 8))
throw sError;
if(bpp == 8) {
// allow grey, reverse grey and palette
if ((color_type != FIC_MINISBLACK) && (color_type != FIC_MINISWHITE) && (color_type != FIC_PALETTE))
throw sError;
}
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
// Step 1: allocate and initialize JPEG compression object
cinfo.err = jpeg_std_error(&jerr);
jerr.error_exit = jpeg_error_exit;
jerr.output_message = jpeg_output_message;
// Now we can initialize the JPEG compression object
jpeg_create_compress(&cinfo);
// Step 2: specify data destination (eg, a file)
jpeg_freeimage_dst(&cinfo, handle, io);
// Step 3: set parameters for compression
cinfo.image_width = FreeImage_GetWidth(dib);
cinfo.image_height = FreeImage_GetHeight(dib);
switch(color_type) {
case FIC_MINISBLACK :
case FIC_MINISWHITE :
cinfo.in_color_space = JCS_GRAYSCALE;
cinfo.input_components = 1;
break;
default :
cinfo.in_color_space = JCS_RGB;
cinfo.input_components = 3;
break;
}
jpeg_set_defaults(&cinfo);
// progressive-JPEG support
if((flags & JPEG_PROGRESSIVE) == JPEG_PROGRESSIVE) {
jpeg_simple_progression(&cinfo);
}
// Set JFIF density parameters from the DIB data
cinfo.X_density = (UINT16) (0.5 + 0.0254 * FreeImage_GetDotsPerMeterX(dib));
cinfo.Y_density = (UINT16) (0.5 + 0.0254 * FreeImage_GetDotsPerMeterY(dib));
cinfo.density_unit = 1; // dots / inch
// set subsampling options if required
if(cinfo.in_color_space == JCS_RGB) {
if((flags & JPEG_SUBSAMPLING_411) == JPEG_SUBSAMPLING_411) {
// 4:1:1 (4x1 1x1 1x1) - CrH 25% - CbH 25% - CrV 100% - CbV 100%
// the horizontal color resolution is quartered
cinfo.comp_info[0].h_samp_factor = 4; // Y
cinfo.comp_info[0].v_samp_factor = 1;
cinfo.comp_info[1].h_samp_factor = 1; // Cb
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1; // Cr
cinfo.comp_info[2].v_samp_factor = 1;
} else if((flags & JPEG_SUBSAMPLING_420) == JPEG_SUBSAMPLING_420) {
// 4:2:0 (2x2 1x1 1x1) - CrH 50% - CbH 50% - CrV 50% - CbV 50%
// the chrominance resolution in both the horizontal and vertical directions is cut in half
cinfo.comp_info[0].h_samp_factor = 2; // Y
cinfo.comp_info[0].v_samp_factor = 2;
cinfo.comp_info[1].h_samp_factor = 1; // Cb
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1; // Cr
cinfo.comp_info[2].v_samp_factor = 1;
} else if((flags & JPEG_SUBSAMPLING_422) == JPEG_SUBSAMPLING_422){ //2x1 (low)
// 4:2:2 (2x1 1x1 1x1) - CrH 50% - CbH 50% - CrV 100% - CbV 100%
// half of the horizontal resolution in the chrominance is dropped (Cb & Cr),
// while the full resolution is retained in the vertical direction, with respect to the luminance
cinfo.comp_info[0].h_samp_factor = 2; // Y
cinfo.comp_info[0].v_samp_factor = 1;
cinfo.comp_info[1].h_samp_factor = 1; // Cb
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1; // Cr
cinfo.comp_info[2].v_samp_factor = 1;
}
else if((flags & JPEG_SUBSAMPLING_444) == JPEG_SUBSAMPLING_444){ //1x1 (no subsampling)
// 4:4:4 (1x1 1x1 1x1) - CrH 100% - CbH 100% - CrV 100% - CbV 100%
// the resolution of chrominance information (Cb & Cr) is preserved
// at the same rate as the luminance (Y) information
cinfo.comp_info[0].h_samp_factor = 1; // Y
cinfo.comp_info[0].v_samp_factor = 1;
cinfo.comp_info[1].h_samp_factor = 1; // Cb
cinfo.comp_info[1].v_samp_factor = 1;
cinfo.comp_info[2].h_samp_factor = 1; // Cr
cinfo.comp_info[2].v_samp_factor = 1;
}
}
// Step 4: set quality
// the first 7 bits are reserved for low level quality settings
// the other bits are high level (i.e. enum-ish)
int quality;
if ((flags & JPEG_QUALITYBAD) == JPEG_QUALITYBAD) {
quality = 10;
} else if ((flags & JPEG_QUALITYAVERAGE) == JPEG_QUALITYAVERAGE) {
quality = 25;
} else if ((flags & JPEG_QUALITYNORMAL) == JPEG_QUALITYNORMAL) {
quality = 50;
} else if ((flags & JPEG_QUALITYGOOD) == JPEG_QUALITYGOOD) {
quality = 75;
} else if ((flags & JPEG_QUALITYSUPERB) == JPEG_QUALITYSUPERB) {
quality = 100;
} else {
if ((flags & 0x7F) == 0) {
quality = 75;
} else {
quality = flags & 0x7F;
}
}
jpeg_set_quality(&cinfo, quality, TRUE); /* limit to baseline-JPEG values */
// Step 5: Start compressor
jpeg_start_compress(&cinfo, TRUE);
// Step 6: Write special markers
write_markers(&cinfo, dib);
// Step 7: while (scan lines remain to be written)
if(color_type == FIC_RGB) {
// 24-bit RGB image : need to swap red and blue channels
unsigned pitch = FreeImage_GetPitch(dib);
BYTE *target = (BYTE*)malloc(pitch * sizeof(BYTE));
if (target == NULL) {
throw FI_MSG_ERROR_MEMORY;
}
while (cinfo.next_scanline < cinfo.image_height) {
// get a copy of the scanline
memcpy(target, FreeImage_GetScanLine(dib, FreeImage_GetHeight(dib) - cinfo.next_scanline - 1), pitch);
#if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR
// swap R and B channels
BYTE *target_p = target;
for(unsigned x = 0; x < cinfo.image_width; x++) {
INPLACESWAP(target_p[0], target_p[2]);
target_p += 3;
}
#endif
// write the scanline
jpeg_write_scanlines(&cinfo, &target, 1);
}
free(target);
}
else if(color_type == FIC_MINISBLACK) {
// 8-bit standard greyscale images
while (cinfo.next_scanline < cinfo.image_height) {
JSAMPROW b = FreeImage_GetScanLine(dib, FreeImage_GetHeight(dib) - cinfo.next_scanline - 1);
jpeg_write_scanlines(&cinfo, &b, 1);
}
}
else if(color_type == FIC_PALETTE) {
// 8-bit palettized images are converted to 24-bit images
RGBQUAD *palette = FreeImage_GetPalette(dib);
BYTE *target = (BYTE*)malloc(cinfo.image_width * 3);
if (target == NULL) {
throw FI_MSG_ERROR_MEMORY;
}
while (cinfo.next_scanline < cinfo.image_height) {
BYTE *source = FreeImage_GetScanLine(dib, FreeImage_GetHeight(dib) - cinfo.next_scanline - 1);
FreeImage_ConvertLine8To24(target, source, cinfo.image_width, palette);
#if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR
// swap R and B channels
BYTE *target_p = target;
for(unsigned x = 0; x < cinfo.image_width; x++) {
INPLACESWAP(target_p[0], target_p[2]);
target_p += 3;
}
#endif
jpeg_write_scanlines(&cinfo, &target, 1);
}
free(target);
}
else if(color_type == FIC_MINISWHITE) {
// reverse 8-bit greyscale image, so reverse grey value on the fly
unsigned i;
BYTE reverse[256];
BYTE *target = (BYTE *)malloc(cinfo.image_width);
if (target == NULL) {
throw FI_MSG_ERROR_MEMORY;
}
for(i = 0; i < 256; i++) {
reverse[i] = (BYTE)(255 - i);
}
while(cinfo.next_scanline < cinfo.image_height) {
BYTE *source = FreeImage_GetScanLine(dib, FreeImage_GetHeight(dib) - cinfo.next_scanline - 1);
for(i = 0; i < cinfo.image_width; i++) {
target[i] = reverse[ source[i] ];
}
jpeg_write_scanlines(&cinfo, &target, 1);
}
free(target);
}
// Step 8: Finish compression
jpeg_finish_compress(&cinfo);
// Step 9: release JPEG compression object
jpeg_destroy_compress(&cinfo);
return TRUE;
} catch (const char *text) {
FreeImage_OutputMessageProc(s_format_id, text);
return FALSE;
} catch (FREE_IMAGE_FORMAT) {
return FALSE;
}
}
return FALSE;
}
static BOOL DLL_CALLCONV
Save(FreeImageIO *io, FIBITMAP *dib, fi_handle handle, int page, int flags, void *data) {
BOOL bIsFlipped = FALSE; // FreeImage DIB are upside-down relative to usual graphic conventions
PKPixelFormatGUID guid_format; // image format
PKPixelInfo pixelInfo; // image specifications
BOOL bHasAlpha = FALSE; // is alpha layer present ?
PKImageEncode *pEncoder = NULL; // encoder interface
ERR error_code = 0; // error code as returned by the interface
// get the I/O stream wrapper
WMPStream *pEncodeStream = (WMPStream*)data;
if(!dib || !handle || !pEncodeStream) {
return FALSE;
}
try {
// get image dimensions
unsigned width = FreeImage_GetWidth(dib);
unsigned height = FreeImage_GetHeight(dib);
// check JPEG-XR limits
if((width < MB_WIDTH_PIXEL) || (height < MB_HEIGHT_PIXEL)) {
FreeImage_OutputMessageProc(s_format_id, "Unsupported image size: width x height = %d x %d", width, height);
throw (const char*)NULL;
}
// get output pixel format
error_code = GetOutputPixelFormat(dib, &guid_format, &bHasAlpha);
JXR_CHECK(error_code);
pixelInfo.pGUIDPixFmt = &guid_format;
error_code = PixelFormatLookup(&pixelInfo, LOOKUP_FORWARD);
JXR_CHECK(error_code);
// create a JXR encoder interface and initialize function pointers with *_WMP functions
error_code = PKImageEncode_Create_WMP(&pEncoder);
JXR_CHECK(error_code);
// attach the stream to the encoder and set all encoder parameters to zero ...
error_code = pEncoder->Initialize(pEncoder, pEncodeStream, &pEncoder->WMP.wmiSCP, sizeof(CWMIStrCodecParam));
JXR_CHECK(error_code);
// ... then configure the encoder
SetEncoderParameters(&pEncoder->WMP.wmiSCP, &pixelInfo, flags, bHasAlpha);
// set pixel format
pEncoder->SetPixelFormat(pEncoder, guid_format);
// set image size
pEncoder->SetSize(pEncoder, width, height);
// set resolution (convert from universal units to English units)
float resX = (float)(unsigned)(0.5F + 0.0254F * FreeImage_GetDotsPerMeterX(dib));
float resY = (float)(unsigned)(0.5F + 0.0254F * FreeImage_GetDotsPerMeterY(dib));
pEncoder->SetResolution(pEncoder, resX, resY);
// set metadata
WriteMetadata(pEncoder, dib);
// write metadata & pixels
// -----------------------
// dib coordinates are upside-down relative to usual conventions
bIsFlipped = FreeImage_FlipVertical(dib);
// get a pointer to dst pixel data
BYTE *dib_bits = FreeImage_GetBits(dib);
// get dst pitch (count of BYTE for stride)
const unsigned cbStride = FreeImage_GetPitch(dib);
// write metadata + pixels on output
error_code = pEncoder->WritePixels(pEncoder, height, dib_bits, cbStride);
JXR_CHECK(error_code);
// recover dib coordinates
FreeImage_FlipVertical(dib);
// free the encoder
pEncoder->Release(&pEncoder);
assert(pEncoder == NULL);
return TRUE;
} catch (const char *message) {
if(bIsFlipped) {
// recover dib coordinates
FreeImage_FlipVertical(dib);
}
if(pEncoder) {
// free the encoder
pEncoder->Release(&pEncoder);
assert(pEncoder == NULL);
}
if(NULL != message) {
FreeImage_OutputMessageProc(s_format_id, message);
}
}
return FALSE;
}
