static void _JpegEncode(const CFX_DIBSource* pSource, FX_LPBYTE& dest_buf, FX_STRSIZE& dest_size, int quality, FX_LPCBYTE icc_buf, FX_DWORD icc_length)
{
struct jpeg_error_mgr jerr;
jerr.error_exit = _error_do_nothing;
jerr.emit_message = _error_do_nothing1;
jerr.output_message = _error_do_nothing;
jerr.format_message = _error_do_nothing2;
jerr.reset_error_mgr = _error_do_nothing;
struct jpeg_compress_struct cinfo;
memset(&cinfo, 0, sizeof(cinfo));
cinfo.err = &jerr;
jpeg_create_compress(&cinfo);
int Bpp = pSource->GetBPP() / 8;
FX_DWORD nComponents = Bpp >= 3 ? (pSource->IsCmykImage() ? 4 : 3) : 1;
FX_DWORD pitch = pSource->GetPitch();
FX_DWORD width = pdfium::base::checked_cast<FX_DWORD>(pSource->GetWidth());
FX_DWORD height = pdfium::base::checked_cast<FX_DWORD>(pSource->GetHeight());
FX_SAFE_DWORD safe_buf_len = width;
safe_buf_len *= height;
safe_buf_len *= nComponents;
safe_buf_len += 1024;
if (icc_length) {
safe_buf_len += 255 * 18;
safe_buf_len += icc_length;
}
FX_DWORD dest_buf_length = 0;
if (!safe_buf_len.IsValid()) {
dest_buf = nullptr;
} else {
dest_buf_length = safe_buf_len.ValueOrDie();
dest_buf = FX_TryAlloc(FX_BYTE, dest_buf_length);
const int MIN_TRY_BUF_LEN = 1024;
while (!dest_buf && dest_buf_length > MIN_TRY_BUF_LEN) {
dest_buf_length >>= 1;
dest_buf = FX_TryAlloc(FX_BYTE, dest_buf_length);
}
}
if (!dest_buf) {
FX_OutOfMemoryTerminate();
}
struct jpeg_destination_mgr dest;
dest.init_destination = _dest_do_nothing;
dest.term_destination = _dest_do_nothing;
dest.empty_output_buffer = _dest_empty;
dest.next_output_byte = dest_buf;
dest.free_in_buffer = dest_buf_length;
cinfo.dest = &dest;
cinfo.image_width = width;
cinfo.image_height = height;
cinfo.input_components = nComponents;
if (nComponents == 1) {
cinfo.in_color_space = JCS_GRAYSCALE;
} else if (nComponents == 3) {
cinfo.in_color_space = JCS_RGB;
} else {
cinfo.in_color_space = JCS_CMYK;
}
FX_LPBYTE line_buf = NULL;
if (nComponents > 1) {
line_buf = FX_Alloc2D(FX_BYTE, width, nComponents);
}
jpeg_set_defaults(&cinfo);
if(quality != 75) {
jpeg_set_quality(&cinfo, quality, TRUE);
}
jpeg_start_compress(&cinfo, TRUE);
_JpegEmbedIccProfile(&cinfo, icc_buf, icc_length);
JSAMPROW row_pointer[1];
JDIMENSION row;
while (cinfo.next_scanline < cinfo.image_height) {
FX_LPCBYTE src_scan = pSource->GetScanline(cinfo.next_scanline);
if (nComponents > 1) {
FX_LPBYTE dest_scan = line_buf;
if (nComponents == 3) {
for (int i = 0; i < width; i ++) {
dest_scan[0] = src_scan[2];
dest_scan[1] = src_scan[1];
dest_scan[2] = src_scan[0];
dest_scan += 3;
src_scan += Bpp;
}
} else {
for (int i = 0; i < pitch; i ++) {
*dest_scan++ = ~*src_scan++;
}
}
row_pointer[0] = line_buf;
} else {
row_pointer[0] = (FX_LPBYTE)src_scan;
}
row = cinfo.next_scanline;
jpeg_write_scanlines(&cinfo, row_pointer, 1);
if (cinfo.next_scanline == row) {
dest_buf = FX_Realloc(FX_BYTE, dest_buf, dest_buf_length + JPEG_BLOCK_SIZE);
dest.next_output_byte = dest_buf + dest_buf_length - dest.free_in_buffer;
dest_buf_length += JPEG_BLOCK_SIZE;
dest.free_in_buffer += JPEG_BLOCK_SIZE;
}
}
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
if (line_buf) {
FX_Free(line_buf);
}
dest_size = dest_buf_length - (FX_STRSIZE)dest.free_in_buffer;
}
static void _JpegEncode(const CFX_DIBSource* pSource, FX_LPBYTE& dest_buf, FX_STRSIZE& dest_size, int quality, FX_LPCBYTE icc_buf, FX_DWORD icc_length)
{
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
jerr.error_exit = _error_do_nothing;
jerr.emit_message = _error_do_nothing1;
jerr.output_message = _error_do_nothing;
jerr.format_message = _error_do_nothing2;
jerr.reset_error_mgr = _error_do_nothing;
cinfo.err = &jerr;
jpeg_create_compress(&cinfo);
int Bpp = pSource->GetBPP() / 8;
int nComponents = Bpp >= 3 ? (pSource->IsCmykImage() ? 4 : 3) : 1;
int pitch = pSource->GetPitch();
int width = pSource->GetWidth();
int height = pSource->GetHeight();
FX_DWORD dest_buf_length = width * height * nComponents + 1024 + (icc_length ? (icc_length + 255 * 18) : 0);
dest_buf = FX_Alloc(FX_BYTE, dest_buf_length);
while (dest_buf == NULL) {
dest_buf_length >>= 1;
dest_buf = FX_Alloc(FX_BYTE, dest_buf_length);
}
FXSYS_memset32(dest_buf, 0, dest_buf_length);
struct jpeg_destination_mgr dest;
dest.init_destination = _dest_do_nothing;
dest.term_destination = _dest_do_nothing;
dest.empty_output_buffer = _dest_empty;
dest.next_output_byte = dest_buf;
dest.free_in_buffer = dest_buf_length;
cinfo.dest = &dest;
cinfo.image_width = width;
cinfo.image_height = height;
cinfo.input_components = nComponents;
if (nComponents == 1) {
cinfo.in_color_space = JCS_GRAYSCALE;
} else if (nComponents == 3) {
cinfo.in_color_space = JCS_RGB;
} else {
cinfo.in_color_space = JCS_CMYK;
}
FX_LPBYTE line_buf = NULL;
if (nComponents > 1) {
line_buf = FX_Alloc(FX_BYTE, width * nComponents);
if (line_buf == NULL) {
return;
}
}
jpeg_set_defaults(&cinfo);
if(quality != 75) {
jpeg_set_quality(&cinfo, quality, TRUE);
}
jpeg_start_compress(&cinfo, TRUE);
_JpegEmbedIccProfile(&cinfo, icc_buf, icc_length);
JSAMPROW row_pointer[1];
JDIMENSION row;
while (cinfo.next_scanline < cinfo.image_height) {
FX_LPCBYTE src_scan = pSource->GetScanline(cinfo.next_scanline);
if (nComponents > 1) {
FX_LPBYTE dest_scan = line_buf;
if (nComponents == 3) {
for (int i = 0; i < width; i ++) {
dest_scan[0] = src_scan[2];
dest_scan[1] = src_scan[1];
dest_scan[2] = src_scan[0];
dest_scan += 3;
src_scan += Bpp;
}
} else {
for (int i = 0; i < pitch; i ++) {
*dest_scan++ = ~*src_scan++;
}
}
row_pointer[0] = line_buf;
} else {
row_pointer[0] = (FX_LPBYTE)src_scan;
}
row = cinfo.next_scanline;
jpeg_write_scanlines(&cinfo, row_pointer, 1);
if (cinfo.next_scanline == row) {
dest_buf = FX_Realloc(FX_BYTE, dest_buf, dest_buf_length + JPEG_BLOCK_SIZE);
if (dest_buf == NULL) {
FX_Free(line_buf);
return;
}
dest.next_output_byte = dest_buf + dest_buf_length - dest.free_in_buffer;
dest_buf_length += JPEG_BLOCK_SIZE;
dest.free_in_buffer += JPEG_BLOCK_SIZE;
}
}
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
if (line_buf) {
FX_Free(line_buf);
}
dest_size = dest_buf_length - (FX_STRSIZE)dest.free_in_buffer;
}
