diff options
Diffstat (limited to 'svtools/source/filter.vcl/jpeg/jpegc.c')
| -rw-r--r-- | svtools/source/filter.vcl/jpeg/jpegc.c | 44 |
1 files changed, 40 insertions, 4 deletions
diff --git a/svtools/source/filter.vcl/jpeg/jpegc.c b/svtools/source/filter.vcl/jpeg/jpegc.c index 78602556097b..29b4749a7b51 100644 --- a/svtools/source/filter.vcl/jpeg/jpegc.c +++ b/svtools/source/filter.vcl/jpeg/jpegc.c @@ -31,7 +31,8 @@ #include "jpeglib.h" #include "jerror.h" #include "jpeg.h" - +#include "rtl/alloc.h" +#include "osl/diagnose.h" struct my_error_mgr { @@ -78,6 +79,9 @@ void ReadJPEG( void* pJPEGReader, void* pIStm, long* pLines ) long nWidth; long nHeight; long nAlignedWidth; + JSAMPLE * range_limit; + HPBYTE pScanLineBuffer = NULL; + long nScanLineBufferComponents = 0; // declare bDecompCreated volatile because of gcc // warning: variable 'bDecompCreated' might be clobbered by `longjmp' or `vfork' volatile long bDecompCreated = 0; @@ -103,8 +107,12 @@ void ReadJPEG( void* pJPEGReader, void* pIStm, long* pLines ) cinfo.output_gamma = 1.0; cinfo.raw_data_out = FALSE; cinfo.quantize_colors = FALSE; - if ( cinfo.jpeg_color_space != JCS_GRAYSCALE ) + if ( cinfo.jpeg_color_space == JCS_YCbCr ) cinfo.out_color_space = JCS_RGB; + else if ( cinfo.jpeg_color_space == JCS_YCCK ) + cinfo.out_color_space = JCS_CMYK; + + OSL_ASSERT(cinfo.out_color_space == JCS_CMYK || cinfo.out_color_space == JCS_GRAYSCALE || cinfo.out_color_space == JCS_RGB); /* change scale for preview import */ if( nPreviewWidth || nPreviewHeight ) @@ -148,6 +156,14 @@ void ReadJPEG( void* pJPEGReader, void* pIStm, long* pLines ) aCreateBitmapParam.bGray = cinfo.output_components == 1; pDIB = CreateBitmap( pJPEGReader, &aCreateBitmapParam ); nAlignedWidth = aCreateBitmapParam.nAlignedWidth; + range_limit=cinfo.sample_range_limit; + + if ( cinfo.out_color_space == JCS_CMYK ) + { + nScanLineBufferComponents = cinfo.output_width * 4; + pScanLineBuffer = rtl_allocateMemory( nScanLineBufferComponents ); + } + if( pDIB ) { if( aCreateBitmapParam.bTopDown ) @@ -160,17 +176,37 @@ void ReadJPEG( void* pJPEGReader, void* pIStm, long* pLines ) for ( *pLines = 0; *pLines < nHeight; (*pLines)++ ) { + if (pScanLineBuffer!=NULL) { // in other words cinfo.out_color_space == JCS_CMYK + int i; + int j; + jpeg_read_scanlines( &cinfo, (JSAMPARRAY) &pScanLineBuffer, 1 ); + // convert CMYK to RGB + for( i=0, j=0; i < nScanLineBufferComponents; i+=4, j+=3 ) + { + int c_=255-pScanLineBuffer[i+0]; + int m_=255-pScanLineBuffer[i+1]; + int y_=255-pScanLineBuffer[i+2]; + int k_=255-pScanLineBuffer[i+3]; + pTmp[j+0]=range_limit[ 255L - ( c_ + k_ ) ]; + pTmp[j+1]=range_limit[ 255L - ( m_ + k_ ) ]; + pTmp[j+2]=range_limit[ 255L - ( y_ + k_ ) ]; + } + } else { jpeg_read_scanlines( &cinfo, (JSAMPARRAY) &pTmp, 1 ); - + } /* PENDING ??? */ if ( cinfo.err->msg_code == 113 ) - break; + break; pTmp += nAlignedWidth; } } jpeg_finish_decompress( &cinfo ); + if (pScanLineBuffer!=NULL) { + rtl_freeMemory( pScanLineBuffer ); + pScanLineBuffer=NULL; + } Exit: |