bool CxImageJPG::Encode(CxFile * hFile) { if (EncodeSafeCheck(hFile)) return false; if (head.biClrUsed!=0 && !IsGrayScale()){ strcpy(info.szLastError,"JPEG can save only RGB or GreyScale images"); return false; } /* This struct contains the JPEG compression parameters and pointers to * working space (which is allocated as needed by the JPEG library). * It is possible to have several such structures, representing multiple * compression/decompression processes, in existence at once. We refer * to any one struct (and its associated working data) as a "JPEG object". */ struct jpeg_compress_struct cinfo; /* This struct represents a JPEG error handler. It is declared separately * because applications often want to supply a specialized error handler * (see the second half of this file for an example). But here we just * take the easy way out and use the standard error handler, which will * print a message on stderr and call exit() if compression fails. * Note that this struct must live as long as the main JPEG parameter * struct, to avoid dangling-pointer problems. */ //struct jpeg_error_mgr jerr; /* We use our private extension JPEG error handler. <CSC> */ struct ima_error_mgr jerr; jerr.buffer=info.szLastError; /* More stuff */ int row_stride; /* physical row width in image buffer */ JSAMPARRAY buffer; /* Output row buffer */ /* Step 1: allocate and initialize JPEG compression object */ /* We have to set up the error handler first, in case the initialization * step fails. (Unlikely, but it could happen if you are out of memory.) * This routine fills in the contents of struct jerr, and returns jerr's * address which we place into the link field in cinfo. */ //cinfo.err = jpeg_std_error(&jerr); <CSC> /* We set up the normal JPEG error routines, then override error_exit. */ cinfo.err = jpeg_std_error(&jerr.pub); jerr.pub.error_exit = ima_jpeg_error_exit; /* Establish the setjmp return context for my_error_exit to use. */ if (setjmp(jerr.setjmp_buffer)) { /* If we get here, the JPEG code has signaled an error. * We need to clean up the JPEG object, close the input file, and return. */ strcpy(info.szLastError, jerr.buffer); //<CSC> jpeg_destroy_compress(&cinfo); return 0; } /* Now we can initialize the JPEG compression object. */ jpeg_create_compress(&cinfo); /* Step 2: specify data destination (eg, a file) */ /* Note: steps 2 and 3 can be done in either order. */ /* Here we use the library-supplied code to send compressed data to a * stdio stream. You can also write your own code to do something else. * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that * requires it in order to write binary files. */ //jpeg_stdio_dest(&cinfo, outfile); CxFileJpg dest(hFile); cinfo.dest = &dest; /* Step 3: set parameters for compression */ /* First we supply a description of the input image. * Four fields of the cinfo struct must be filled in: */ cinfo.image_width = GetWidth(); // image width and height, in pixels cinfo.image_height = GetHeight(); if (IsGrayScale()){ cinfo.input_components = 1; // # of color components per pixel cinfo.in_color_space = JCS_GRAYSCALE; /* colorspace of input image */ } else { cinfo.input_components = 3; // # of color components per pixel cinfo.in_color_space = JCS_RGB; /* colorspace of input image */ } /* Now use the library's routine to set default compression parameters. * (You must set at least cinfo.in_color_space before calling this, * since the defaults depend on the source color space.) */ jpeg_set_defaults(&cinfo); /* Now you can set any non-default parameters you wish to. * Here we just illustrate the use of quality (quantization table) scaling: */ //jpeg_set_quality(&cinfo, info.nQuality, TRUE /* limit to baseline-JPEG values */); #ifdef C_ARITH_CODING_SUPPORTED if ((GetCodecOption() & ENCODE_ARITHMETIC) != 0) cinfo.arith_code = TRUE; #endif #ifdef ENTRPY_OPT_SUPPORTED if ((GetCodecOption() & ENCODE_OPTIMIZE) != 0) cinfo.optimize_coding = TRUE; #endif if ((GetCodecOption() & ENCODE_GRAYSCALE) != 0) jpeg_set_colorspace(&cinfo, JCS_GRAYSCALE); if ((GetCodecOption() & ENCODE_SMOOTHING) != 0) cinfo.smoothing_factor = m_nSmoothing; jpeg_set_quality(&cinfo, GetJpegQuality(), (GetCodecOption() & ENCODE_BASELINE) != 0); #ifdef C_PROGRESSIVE_SUPPORTED if ((GetCodecOption() & ENCODE_PROGRESSIVE) != 0) jpeg_simple_progression(&cinfo); #endif #ifdef C_LOSSLES_SUPPORTED if ((GetCodecOption() & ENCODE_LOSSLESS) != 0) jpeg_simple_lossless(&cinfo, m_nPredictor, m_nPointTransform); #endif cinfo.density_unit=1; cinfo.X_density=(unsigned short)GetXDPI(); cinfo.Y_density=(unsigned short)GetYDPI(); /* Step 4: Start compressor */ /* TRUE ensures that we will write a complete interchange-JPEG file. * Pass TRUE unless you are very sure of what you're doing. */ jpeg_start_compress(&cinfo, TRUE); /* Step 5: while (scan lines remain to be written) */ /* jpeg_write_scanlines(...); */ /* Here we use the library's state variable cinfo.next_scanline as the * loop counter, so that we don't have to keep track ourselves. * To keep things simple, we pass one scanline per call; you can pass * more if you wish, though. */ row_stride = info.dwEffWidth; /* JSAMPLEs per row in image_buffer */ //<DP> "8+row_stride" fix heap deallocation problem during debug??? buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, 8+row_stride, 1); CImageIterator iter(this); iter.Upset(); while (cinfo.next_scanline < cinfo.image_height) { // info.nProgress = (long)(100*cinfo.next_scanline/cinfo.image_height); iter.GetRow(buffer[0], row_stride); // not necessary if swapped red and blue definition in jmorecfg.h;ln322 <W. Morrison> if (head.biClrUsed==0){ // swap R & B for RGB images RGBtoBGR(buffer[0], row_stride); // Lance : 1998/09/01 : Bug ID: EXP-2.1.1-9 } iter.PrevRow(); (void) jpeg_write_scanlines(&cinfo, buffer, 1); } /* Step 6: Finish compression */ jpeg_finish_compress(&cinfo); /* Step 7: release JPEG compression object */ /* This is an important step since it will release a good deal of memory. */ jpeg_destroy_compress(&cinfo); /* And we're done! */ return true; }
bool CxImageJPG::Decode(CxFile * hFile) { bool is_exif = false; #if CXIMAGEJPG_SUPPORT_EXIF is_exif = DecodeExif(hFile); #endif CImageIterator iter(this); /* This struct contains the JPEG decompression parameters and pointers to * working space (which is allocated as needed by the JPEG library). */ struct jpeg_decompress_struct cinfo; /* We use our private extension JPEG error handler. <CSC> */ struct ima_error_mgr jerr; jerr.buffer=info.szLastError; /* More stuff */ JSAMPARRAY buffer; /* Output row buffer */ int row_stride; /* physical row width in output buffer */ /* In this example we want to open the input file before doing anything else, * so that the setjmp() error recovery below can assume the file is open. * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that * requires it in order to read binary files. */ /* Step 1: allocate and initialize JPEG decompression object */ /* We set up the normal JPEG error routines, then override error_exit. */ cinfo.err = jpeg_std_error(&jerr.pub); jerr.pub.error_exit = ima_jpeg_error_exit; /* Establish the setjmp return context for my_error_exit to use. */ if (setjmp(jerr.setjmp_buffer)) { /* If we get here, the JPEG code has signaled an error. * We need to clean up the JPEG object, close the input file, and return. */ jpeg_destroy_decompress(&cinfo); return 0; } /* Now we can initialize the JPEG decompression object. */ jpeg_create_decompress(&cinfo); /* Step 2: specify data source (eg, a file) */ //jpeg_stdio_src(&cinfo, infile); CxFileJpg src(hFile); cinfo.src = &src; /* Step 3: read file parameters with jpeg_read_header() */ (void) jpeg_read_header(&cinfo, TRUE); /* Step 4 <chupeev> handle decoder options*/ if ((GetCodecOption() & DECODE_GRAYSCALE) != 0) cinfo.out_color_space = JCS_GRAYSCALE; if ((GetCodecOption() & DECODE_QUANTIZE) != 0) { cinfo.quantize_colors = TRUE; cinfo.desired_number_of_colors = info.nQuality; } if ((GetCodecOption() & DECODE_DITHER) != 0) cinfo.dither_mode = m_nDither; if ((GetCodecOption() & DECODE_ONEPASS) != 0) cinfo.two_pass_quantize = FALSE; if ((GetCodecOption() & DECODE_NOSMOOTH) != 0) cinfo.do_fancy_upsampling = FALSE; //<DP>: Load true color images as RGB (no quantize) /* Step 4: set parameters for decompression */ /* if (cinfo.jpeg_color_space!=JCS_GRAYSCALE) { * cinfo.quantize_colors = TRUE; * cinfo.desired_number_of_colors = 128; *} */ //</DP> // Set the scale <ignacio> cinfo.scale_denom = info.nScale; // Borrowed the idea from GIF implementation <ignacio> if (info.nEscape == -1) { // Return output dimensions only jpeg_calc_output_dimensions(&cinfo); head.biWidth = cinfo.output_width; head.biHeight = cinfo.output_height; jpeg_destroy_decompress(&cinfo); return true; } /* Step 5: Start decompressor */ jpeg_start_decompress(&cinfo); /* We may need to do some setup of our own at this point before reading * the data. After jpeg_start_decompress() we have the correct scaled * output image dimensions available, as well as the output colormap * if we asked for color quantization. */ //Create the image using output dimensions <ignacio> //Create(cinfo.image_width, cinfo.image_height, 8*cinfo.output_components, CXIMAGE_FORMAT_JPG); Create(cinfo.output_width, cinfo.output_height, 8*cinfo.output_components, CXIMAGE_FORMAT_JPG); if (!pDib) longjmp(jerr.setjmp_buffer, 1); //<DP> check if the image has been created if (is_exif){ #if CXIMAGEJPG_SUPPORT_EXIF if ((m_exifinfo.Xresolution != 0.0) && (m_exifinfo.ResolutionUnit != 0)) SetXDPI((long)(m_exifinfo.Xresolution/m_exifinfo.ResolutionUnit)); if ((m_exifinfo.Yresolution != 0.0) && (m_exifinfo.ResolutionUnit != 0)) SetYDPI((long)(m_exifinfo.Yresolution/m_exifinfo.ResolutionUnit)); #endif } else { if (cinfo.density_unit==2){ SetXDPI((long)floor(cinfo.X_density * 254.0 / 10000.0 + 0.5)); SetYDPI((long)floor(cinfo.Y_density * 254.0 / 10000.0 + 0.5)); } else { SetXDPI(cinfo.X_density); SetYDPI(cinfo.Y_density); } } if (cinfo.out_color_space==JCS_GRAYSCALE){ SetGrayPalette(); head.biClrUsed =256; } else { if (cinfo.quantize_colors==TRUE){ SetPalette(cinfo.actual_number_of_colors, cinfo.colormap[0], cinfo.colormap[1], cinfo.colormap[2]); head.biClrUsed=cinfo.actual_number_of_colors; } else { head.biClrUsed=0; } } /* JSAMPLEs per row in output buffer */ row_stride = cinfo.output_width * cinfo.output_components; /* Make a one-row-high sample array that will go away when done with image */ buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1); /* Step 6: while (scan lines remain to be read) */ /* jpeg_read_scanlines(...); */ /* Here we use the library's state variable cinfo.output_scanline as the * loop counter, so that we don't have to keep track ourselves. */ iter.Upset(); while (cinfo.output_scanline < cinfo.output_height) { if (info.nEscape) longjmp(jerr.setjmp_buffer, 1); // <vho> - cancel decoding (void) jpeg_read_scanlines(&cinfo, buffer, 1); // info.nProgress = (long)(100*cinfo.output_scanline/cinfo.output_height); //<DP> Step 6a: CMYK->RGB */ if ((cinfo.num_components==4)&&(cinfo.quantize_colors==FALSE)){ BYTE k,*dst,*src; dst=iter.GetRow(); src=buffer[0]; for(long x3=0,x4=0; x3<(long)info.dwEffWidth && x4<row_stride; x3+=3, x4+=4){ k=src[x4+3]; dst[x3] =(BYTE)((k * src[x4+2])/255); dst[x3+1]=(BYTE)((k * src[x4+1])/255); dst[x3+2]=(BYTE)((k * src[x4+0])/255); } } else { /* Assume put_scanline_someplace wants a pointer and sample count. */ iter.SetRow(buffer[0], row_stride); } iter.PrevRow(); } /* Step 7: Finish decompression */ (void) jpeg_finish_decompress(&cinfo); /* We can ignore the return value since suspension is not possible * with the stdio data source. */ //<DP> Step 7A: Swap red and blue components // not necessary if swapped red and blue definition in jmorecfg.h;ln322 <W. Morrison> if ((cinfo.num_components==3)&&(cinfo.quantize_colors==FALSE)){ BYTE* r0=GetBits(); for(long y=0;y<head.biHeight;y++){ if (info.nEscape) longjmp(jerr.setjmp_buffer, 1); // <vho> - cancel decoding RGBtoBGR(r0,3*head.biWidth); r0+=info.dwEffWidth; } } /* Step 8: Release JPEG decompression object */ /* This is an important step since it will release a good deal of memory. */ jpeg_destroy_decompress(&cinfo); /* At this point you may want to check to see whether any corrupt-data * warnings occurred (test whether jerr.pub.num_warnings is nonzero). */ /* And we're done! */ return true; }
bool CxImageRAW::Decode(CxFile *hFile) { return false; #if 0 if (hFile==NULL) return false; if (mutexInitialized == false) { #ifdef _LINUX pthread_mutex_init(&rawMutex, 0); #else rawMutex = ::CreateMutex(NULL, false, NULL); #endif mutexInitialized = true; } #ifdef _LINUX pthread_mutex_lock(&rawMutex); #else ::WaitForSingleObject(rawMutex, INFINITE); #endif DCRAW dcr; cx_try { // initialization dcr_init_dcraw(&dcr); dcr.opt.user_qual = GetCodecOption(CXIMAGE_FORMAT_RAW) & 0x03; // setup variables for debugging char szClass[] = "CxImageRAW"; dcr.ifname = szClass; dcr.sz_error = info.szLastError; // setup library options, see dcr_print_manual for the available switches // call dcr_parse_command_line_options(&dcr,0,0,0) to set default options // if (dcr_parse_command_line_options(&dcr,argc,argv,&arg)) if (dcr_parse_command_line_options(&dcr,0,0,0)){ cx_throw("CxImageRAW: unknown option"); } // set return point for error handling if (setjmp (dcr.failure)) { cx_throw(""); } // install file manager CxFileRaw src(hFile,&dcr); // check file header dcr_identify(&dcr); if(!dcr.is_raw){ cx_throw("CxImageRAW: not a raw image"); } if (dcr.load_raw == NULL) { cx_throw("CxImageRAW: missing raw decoder"); } // verify special case if (dcr.load_raw == dcr_kodak_ycbcr_load_raw) { dcr.height += dcr.height & 1; dcr.width += dcr.width & 1; } if (info.nEscape == -1){ head.biWidth = dcr.width; head.biHeight= dcr.height; info.dwType = CXIMAGE_FORMAT_RAW; cx_throw("output dimensions returned"); } // shrinked decoding available and requested? dcr.shrink = dcr.filters && (dcr.opt.half_size || dcr.opt.threshold || dcr.opt.aber[0] != 1 || dcr.opt.aber[2] != 1); dcr.iheight = (dcr.height + dcr.shrink) >> dcr.shrink; dcr.iwidth = (dcr.width + dcr.shrink) >> dcr.shrink; // install custom camera matrix if (dcr.opt.use_camera_matrix && dcr.cmatrix[0][0] > 0.25) { memcpy (dcr.rgb_cam, dcr.cmatrix, sizeof dcr.cmatrix); dcr.raw_color = 0; } else { dcr.opt.use_camera_wb = 1; } // allocate memory for the image dcr.image = (ushort (*)[4]) calloc (dcr.iheight*dcr.iwidth, sizeof *dcr.image); dcr_merror (&dcr, dcr.image, szClass); if (dcr.meta_length) { dcr.meta_data = (char *) malloc (dcr.meta_length); dcr_merror (&dcr, dcr.meta_data, szClass); } // start image decoder hFile->Seek(dcr.data_offset, SEEK_SET); (*dcr.load_raw)(&dcr); // post processing if (dcr.zero_is_bad) dcr_remove_zeroes(&dcr); dcr_bad_pixels(&dcr,NULL); if (dcr.opt.dark_frame) dcr_subtract (&dcr,dcr.opt.dark_frame); dcr.quality = 2 + !dcr.fuji_width; if (dcr.opt.user_qual >= 0) dcr.quality = dcr.opt.user_qual; if (dcr.opt.user_black >= 0) dcr.black = dcr.opt.user_black; #ifdef COLORCHECK dcr_colorcheck(&dcr); #endif #if RESTRICTED if (dcr.is_foveon && !dcr.opt.document_mode) dcr_foveon_interpolate(&dcr); #endif if (!dcr.is_foveon && dcr.opt.document_mode < 2) dcr_scale_colors(&dcr); // pixel interpolation and filters dcr_pre_interpolate(&dcr); if (dcr.filters && !dcr.opt.document_mode) { if (dcr.quality == 0) dcr_lin_interpolate(&dcr); else if (dcr.quality == 1 || dcr.colors > 3) dcr_vng_interpolate(&dcr); else if (dcr.quality == 2) dcr_ppg_interpolate(&dcr); else dcr_ahd_interpolate(&dcr); } if (dcr.mix_green) { long i; for (dcr.colors=3, i=0; i < dcr.height*dcr.width; i++) { dcr.image[i][1] = (dcr.image[i][1] + dcr.image[i][3]) >> 1; } } if (!dcr.is_foveon && dcr.colors == 3) dcr_median_filter(&dcr); if (!dcr.is_foveon && dcr.opt.highlight == 2) dcr_blend_highlights(&dcr); if (!dcr.is_foveon && dcr.opt.highlight > 2) dcr_recover_highlights(&dcr); if (dcr.opt.use_fuji_rotate) dcr_fuji_rotate(&dcr); #ifndef NO_LCMS if (dcr.opt.cam_profile) dcr_apply_profile (dcr.opt.cam_profile, dcr.opt.out_profile); #endif // final conversion dcr_convert_to_rgb(&dcr); if (dcr.opt.use_fuji_rotate) dcr_stretch(&dcr); dcr.iheight = dcr.height; dcr.iwidth = dcr.width; if (dcr.flip & 4) SWAP(dcr.height,dcr.width); // ready to transfer data from dcr.image if (!Create(dcr.width,dcr.height,24,CXIMAGE_FORMAT_RAW)){ cx_throw(""); } uchar *ppm = (uchar *) calloc (dcr.width, dcr.colors*dcr.opt.output_bps/8); ushort *ppm2 = (ushort *) ppm; dcr_merror (&dcr, ppm, szClass); uchar lut[0x10000]; if (dcr.opt.output_bps == 8) dcr_gamma_lut (&dcr, lut); long c, row, col, soff, rstep, cstep; soff = dcr_flip_index (&dcr, 0, 0); cstep = dcr_flip_index (&dcr, 0, 1) - soff; rstep = dcr_flip_index (&dcr, 1, 0) - dcr_flip_index (&dcr, 0, dcr.width); for (row=0; row < dcr.height; row++, soff += rstep) { for (col=0; col < dcr.width; col++, soff += cstep) { if (dcr.opt.output_bps == 8) for (c=0; c < dcr.colors; c++) ppm [col*dcr.colors+c] = lut[dcr.image[soff][c]]; else for (c=0; c < dcr.colors; c++) ppm2[col*dcr.colors+c] = dcr.image[soff][c]; } if (dcr.opt.output_bps == 16 && !dcr.opt.output_tiff && htons(0x55aa) != 0x55aa) #if defined(_LINUX) || defined(__APPLE__) swab ((char*)ppm2, (char*)ppm2, dcr.width*dcr.colors*2); #else _swab ((char*)ppm2, (char*)ppm2, dcr.width*dcr.colors*2); #endif DWORD size = dcr.width * (dcr.colors*dcr.opt.output_bps/8); RGBtoBGR(ppm,size); memcpy(GetBits(dcr.height - 1 - row), ppm, min(size,GetEffWidth())); } free (ppm); dcr_cleanup_dcraw(&dcr); #ifdef _LINUX pthread_mutex_unlock(&rawMutex); #else ::ReleaseMutex(rawMutex); #endif } cx_catch {