void CompressorTurboJPEG::compress( const void* const inData, const eq_uint64_t* inDims, const eq_uint64_t flags ) { assert( !_decoder ); assert( flags & EQ_COMPRESSOR_DATA_2D ); if( !_encoder ) _encoder = tjInitCompress(); const bool useAlpha = !(flags & EQ_COMPRESSOR_IGNORE_ALPHA); if( useAlpha && _tokenSize == 4 ) { const eq_uint64_t size = inDims[3] * inDims[1]; _extractAlpha( reinterpret_cast< const unsigned char* >(inData), size ); _nResults = 2; } else _nResults = 1; _results[0]->resize( TJBUFSIZE( inDims[1], inDims[3] ) ); unsigned long size = 0; void* const data = const_cast< void* const >(inData); if( tjCompress( _encoder, reinterpret_cast< unsigned char*>( data ), inDims[1], inDims[1] * _tokenSize, inDims[3], _tokenSize, _results[0]->getData(), &size, TJ_444, _quality, _flags )) { assert( false ); size = 0; } _results[0]->resize( size ); }
DLLEXPORT int DLLCALL tjCompress(tjhandle h, unsigned char *srcbuf, int width, int pitch, int height, int ps, unsigned char *dstbuf, unsigned long *size, int jpegsub, int qual, int flags) { int i; JSAMPROW *row_pointer=NULL; checkhandle(h); if(srcbuf==NULL || width<=0 || pitch<0 || height<=0 || dstbuf==NULL || size==NULL || jpegsub<0 || jpegsub>=NUMSUBOPT || qual<0 || qual>100) _throw("Invalid argument in tjCompress()"); if(ps!=3 && ps!=4) _throw("This compressor can only take 24-bit or 32-bit RGB input"); if(!j->initc) _throw("Instance has not been initialized for compression"); if(pitch==0) pitch=width*ps; j->cinfo.rgb_pixelsize = ps; j->cinfo.rgb_green = 1; if(flags&TJ_BGR) {j->cinfo.rgb_red = 2; j->cinfo.rgb_blue = 0;} else {j->cinfo.rgb_red = 0; j->cinfo.rgb_blue = 2;} if(flags&TJ_ALPHAFIRST) { j->cinfo.rgb_red++; j->cinfo.rgb_green++; j->cinfo.rgb_blue++; } j->cinfo.image_width = width; j->cinfo.image_height = height; j->cinfo.input_components = ps; j->cinfo.in_color_space = JCS_RGB; if(setjmp(j->jerr.jb)) { // this will execute if LIBJPEG has an error if(row_pointer) free(row_pointer); return -1; } jpeg_set_defaults(&j->cinfo); jpeg_set_quality(&j->cinfo, qual, TRUE); if(jpegsub==TJ_GRAYSCALE) jpeg_set_colorspace(&j->cinfo, JCS_GRAYSCALE); else jpeg_set_colorspace(&j->cinfo, JCS_YCbCr); j->cinfo.dct_method = JDCT_FASTEST; j->cinfo.comp_info[0].h_samp_factor=hsampfactor[jpegsub]; j->cinfo.comp_info[1].h_samp_factor=1; j->cinfo.comp_info[2].h_samp_factor=1; j->cinfo.comp_info[0].v_samp_factor=vsampfactor[jpegsub]; j->cinfo.comp_info[1].v_samp_factor=1; j->cinfo.comp_info[2].v_samp_factor=1; j->jdms.next_output_byte = dstbuf; j->jdms.free_in_buffer = TJBUFSIZE(j->cinfo.image_width, j->cinfo.image_height); if((row_pointer=(JSAMPROW *)malloc(sizeof(JSAMPROW)*height))==NULL) _throw("Memory allocation failed in tjInitCompress()"); for(i=0; i<height; i++) { if(flags&TJ_BOTTOMUP) row_pointer[i]= &srcbuf[(height-i-1)*pitch]; else row_pointer[i]= &srcbuf[i*pitch]; } jpeg_start_compress(&j->cinfo, TRUE); while(j->cinfo.next_scanline<j->cinfo.image_height) { jpeg_write_scanlines(&j->cinfo, &row_pointer[j->cinfo.next_scanline], j->cinfo.image_height-j->cinfo.next_scanline); } jpeg_finish_compress(&j->cinfo); *size=TJBUFSIZE(j->cinfo.image_width, j->cinfo.image_height)-(j->jdms.free_in_buffer); if(row_pointer) free(row_pointer); return 0; }
DLLEXPORT int DLLCALL tjCompress(tjhandle h, unsigned char *srcbuf, int width, int pitch, int height, int ps, unsigned char *dstbuf, unsigned long *size, int jpegsub, int qual, int flags) { int i, retval=0; JSAMPROW *row_pointer=NULL; JSAMPLE *_tmpbuf[MAX_COMPONENTS], *_tmpbuf2[MAX_COMPONENTS]; JSAMPROW *tmpbuf[MAX_COMPONENTS], *tmpbuf2[MAX_COMPONENTS]; JSAMPROW *outbuf[MAX_COMPONENTS]; checkhandle(h); for(i=0; i<MAX_COMPONENTS; i++) { tmpbuf[i]=NULL; _tmpbuf[i]=NULL; tmpbuf2[i]=NULL; _tmpbuf2[i]=NULL; outbuf[i]=NULL; } if(srcbuf==NULL || width<=0 || pitch<0 || height<=0 || dstbuf==NULL || size==NULL || jpegsub<0 || jpegsub>=NUMSUBOPT || qual<0 || qual>100) _throw("Invalid argument in tjCompress()"); if(ps!=3 && ps!=4 && ps!=1) _throw("This compressor can only handle 24-bit and 32-bit RGB or 8-bit grayscale input"); if(!j->initc) _throw("Instance has not been initialized for compression"); if(pitch==0) pitch=width*ps; j->cinfo.image_width = width; j->cinfo.image_height = height; j->cinfo.input_components = ps; if(ps==1) j->cinfo.in_color_space = JCS_GRAYSCALE; #if JCS_EXTENSIONS==1 else j->cinfo.in_color_space = JCS_EXT_RGB; if(ps==3 && (flags&TJ_BGR)) j->cinfo.in_color_space = JCS_EXT_BGR; else if(ps==4 && !(flags&TJ_BGR) && !(flags&TJ_ALPHAFIRST)) j->cinfo.in_color_space = JCS_EXT_RGBX; else if(ps==4 && (flags&TJ_BGR) && !(flags&TJ_ALPHAFIRST)) j->cinfo.in_color_space = JCS_EXT_BGRX; else if(ps==4 && (flags&TJ_BGR) && (flags&TJ_ALPHAFIRST)) j->cinfo.in_color_space = JCS_EXT_XBGR; else if(ps==4 && !(flags&TJ_BGR) && (flags&TJ_ALPHAFIRST)) j->cinfo.in_color_space = JCS_EXT_XRGB; #else #error "TurboJPEG requires JPEG colorspace extensions" #endif if(flags&TJ_FORCEMMX) putenv("JSIMD_FORCEMMX=1"); else if(flags&TJ_FORCESSE) putenv("JSIMD_FORCESSE=1"); else if(flags&TJ_FORCESSE2) putenv("JSIMD_FORCESSE2=1"); if(setjmp(j->jerr.jb)) { // this will execute if LIBJPEG has an error retval=-1; goto bailout; } jpeg_set_defaults(&j->cinfo); jpeg_set_quality(&j->cinfo, qual, TRUE); if(jpegsub==TJ_GRAYSCALE) jpeg_set_colorspace(&j->cinfo, JCS_GRAYSCALE); else jpeg_set_colorspace(&j->cinfo, JCS_YCbCr); if(qual>=96) j->cinfo.dct_method=JDCT_ISLOW; else j->cinfo.dct_method=JDCT_FASTEST; j->cinfo.comp_info[0].h_samp_factor=hsampfactor[jpegsub]; j->cinfo.comp_info[1].h_samp_factor=1; j->cinfo.comp_info[2].h_samp_factor=1; j->cinfo.comp_info[0].v_samp_factor=vsampfactor[jpegsub]; j->cinfo.comp_info[1].v_samp_factor=1; j->cinfo.comp_info[2].v_samp_factor=1; j->jdms.next_output_byte = dstbuf; j->jdms.free_in_buffer = TJBUFSIZE(j->cinfo.image_width, j->cinfo.image_height); jpeg_start_compress(&j->cinfo, TRUE); if(flags&TJ_YUV) { j_compress_ptr cinfo=&j->cinfo; int row; int pw=PAD(width, cinfo->max_h_samp_factor); int ph=PAD(height, cinfo->max_v_samp_factor); int cw[MAX_COMPONENTS], ch[MAX_COMPONENTS]; jpeg_component_info *compptr; JSAMPLE *ptr=dstbuf; unsigned long yuvsize=0; if((row_pointer=(JSAMPROW *)malloc(sizeof(JSAMPROW)*ph))==NULL) _throw("Memory allocation failed in tjCompress()"); for(i=0; i<height; i++) { if(flags&TJ_BOTTOMUP) row_pointer[i]= &srcbuf[(height-i-1)*pitch]; else row_pointer[i]= &srcbuf[i*pitch]; } if(height<ph) for(i=height; i<ph; i++) row_pointer[i]=row_pointer[height-1]; for(i=0; i<cinfo->num_components; i++) { compptr=&cinfo->comp_info[i]; _tmpbuf[i]=(JSAMPLE *)malloc( PAD((compptr->width_in_blocks*cinfo->max_h_samp_factor*DCTSIZE) /compptr->h_samp_factor, 16) * cinfo->max_v_samp_factor + 16); if(!_tmpbuf[i]) _throw("Memory allocation failure"); tmpbuf[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*cinfo->max_v_samp_factor); if(!tmpbuf[i]) _throw("Memory allocation failure"); for(row=0; row<cinfo->max_v_samp_factor; row++) { unsigned char *_tmpbuf_aligned= (unsigned char *)PAD((size_t)_tmpbuf[i], 16); tmpbuf[i][row]=&_tmpbuf_aligned[ PAD((compptr->width_in_blocks*cinfo->max_h_samp_factor*DCTSIZE) /compptr->h_samp_factor, 16) * row]; } _tmpbuf2[i]=(JSAMPLE *)malloc(PAD(compptr->width_in_blocks*DCTSIZE, 16) * compptr->v_samp_factor + 16); if(!_tmpbuf2[i]) _throw("Memory allocation failure"); tmpbuf2[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*compptr->v_samp_factor); if(!tmpbuf2[i]) _throw("Memory allocation failure"); for(row=0; row<compptr->v_samp_factor; row++) { unsigned char *_tmpbuf2_aligned= (unsigned char *)PAD((size_t)_tmpbuf2[i], 16); tmpbuf2[i][row]=&_tmpbuf2_aligned[ PAD(compptr->width_in_blocks*DCTSIZE, 16) * row]; } cw[i]=pw*compptr->h_samp_factor/cinfo->max_h_samp_factor; ch[i]=ph*compptr->v_samp_factor/cinfo->max_v_samp_factor; outbuf[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*ch[i]); if(!outbuf[i]) _throw("Memory allocation failure"); for(row=0; row<ch[i]; row++) { outbuf[i][row]=ptr; ptr+=PAD(cw[i], 4); } } yuvsize=(unsigned long)(ptr-dstbuf); for(row=0; row<ph; row+=cinfo->max_v_samp_factor) { (*cinfo->cconvert->color_convert)(cinfo, &row_pointer[row], tmpbuf, 0, cinfo->max_v_samp_factor); (cinfo->downsample->downsample)(cinfo, tmpbuf, 0, tmpbuf2, 0); for(i=0, compptr=cinfo->comp_info; i<cinfo->num_components; i++, compptr++) jcopy_sample_rows(tmpbuf2[i], 0, outbuf[i], row*compptr->v_samp_factor/cinfo->max_v_samp_factor, compptr->v_samp_factor, cw[i]); } *size=yuvsize; cinfo->next_scanline+=height; } else { if((row_pointer=(JSAMPROW *)malloc(sizeof(JSAMPROW)*height))==NULL) _throw("Memory allocation failed in tjCompress()"); for(i=0; i<height; i++) { if(flags&TJ_BOTTOMUP) row_pointer[i]= &srcbuf[(height-i-1)*pitch]; else row_pointer[i]= &srcbuf[i*pitch]; } while(j->cinfo.next_scanline<j->cinfo.image_height) { jpeg_write_scanlines(&j->cinfo, &row_pointer[j->cinfo.next_scanline], j->cinfo.image_height-j->cinfo.next_scanline); } } jpeg_finish_compress(&j->cinfo); if(!(flags&TJ_YUV)) *size=TJBUFSIZE(j->cinfo.image_width, j->cinfo.image_height) -(unsigned long)(j->jdms.free_in_buffer); bailout: if(j->cinfo.global_state>CSTATE_START) jpeg_abort_compress(&j->cinfo); if(row_pointer) free(row_pointer); for(i=0; i<MAX_COMPONENTS; i++) { if(tmpbuf[i]!=NULL) free(tmpbuf[i]); if(_tmpbuf[i]!=NULL) free(_tmpbuf[i]); if(tmpbuf2[i]!=NULL) free(tmpbuf2[i]); if(_tmpbuf2[i]!=NULL) free(_tmpbuf2[i]); if(outbuf[i]!=NULL) free(outbuf[i]); } return retval; }