19f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 29f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * rdrle.c 39f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 49f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Copyright (C) 1991-1996, Thomas G. Lane. 59f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * This file is part of the Independent JPEG Group's software. 69f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * For conditions of distribution and use, see the accompanying README file. 79f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 89f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * This file contains routines to read input images in Utah RLE format. 99f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * The Utah Raster Toolkit library is required (version 3.1 or later). 109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * These routines may need modification for non-Unix environments or 129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * specialized applications. As they stand, they assume input from 139f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * an ordinary stdio stream. They further assume that reading begins 149f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * at the start of the file; start_input may need work if the 159f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * user interface has already read some data (e.g., to determine that 169f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the file is indeed RLE format). 179f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 189f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Based on code contributed by Mike Lijewski, 199f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * with updates from Robert Hutchinson. 209f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 219f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 229f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ 239f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 249f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef RLE_SUPPORTED 259f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 269f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* rle.h is provided by the Utah Raster Toolkit. */ 279f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 289f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#include <rle.h> 299f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 309f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 319f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * We assume that JSAMPLE has the same representation as rle_pixel, 329f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * to wit, "unsigned char". Hence we can't cope with 12- or 16-bit samples. 339f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 349f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 359f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#if BITS_IN_JSAMPLE != 8 369f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ 379f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 389f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 399f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 409f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * We support the following types of RLE files: 419f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 429f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * GRAYSCALE - 8 bits, no colormap 439f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * MAPPEDGRAY - 8 bits, 1 channel colomap 449f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * PSEUDOCOLOR - 8 bits, 3 channel colormap 459f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * TRUECOLOR - 24 bits, 3 channel colormap 469f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * DIRECTCOLOR - 24 bits, no colormap 479f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * 489f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * For now, we ignore any alpha channel in the image. 499f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 509f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 519f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projecttypedef enum 529f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project { GRAYSCALE, MAPPEDGRAY, PSEUDOCOLOR, TRUECOLOR, DIRECTCOLOR } rle_kind; 539f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 549f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 559f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 569f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Since RLE stores scanlines bottom-to-top, we have to invert the image 579f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * to conform to JPEG's top-to-bottom order. To do this, we read the 589f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * incoming image into a virtual array on the first get_pixel_rows call, 599f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * then fetch the required row from the virtual array on subsequent calls. 609f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 619f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 629f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projecttypedef struct _rle_source_struct * rle_source_ptr; 639f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 649f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projecttypedef struct _rle_source_struct { 659f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project struct cjpeg_source_struct pub; /* public fields */ 669f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 679f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_kind visual; /* actual type of input file */ 689f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project jvirt_sarray_ptr image; /* virtual array to hold the image */ 699f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JDIMENSION row; /* current row # in the virtual array */ 709f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_hdr header; /* Input file information */ 719f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_pixel** rle_row; /* holds a row returned by rle_getrow() */ 729f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 739f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} rle_source_struct; 749f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 759f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 769f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 779f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Read the file header; return image size and component count. 789f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 799f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 809f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(void) 819f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectstart_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) 829f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 839f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_source_ptr source = (rle_source_ptr) sinfo; 849f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JDIMENSION width, height; 859f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 869f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; 879f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 889f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 899f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Use RLE library routine to get the header info */ 909f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->header = *rle_hdr_init(NULL); 919f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->header.rle_file = source->pub.input_file; 929f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project switch (rle_get_setup(&(source->header))) { 939f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case RLE_SUCCESS: 949f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* A-OK */ 959f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 969f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case RLE_NOT_RLE: 979f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_RLE_NOT); 989f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 999f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case RLE_NO_SPACE: 1009f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_RLE_MEM); 1019f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 1029f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case RLE_EMPTY: 1039f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_RLE_EMPTY); 1049f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 1059f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case RLE_EOF: 1069f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_RLE_EOF); 1079f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 1089f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project default: 1099f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_RLE_BADERROR); 1109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 1119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1139f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Figure out what we have, set private vars and return values accordingly */ 1149f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1159f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project width = source->header.xmax - source->header.xmin + 1; 1169f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project height = source->header.ymax - source->header.ymin + 1; 1179f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->header.xmin = 0; /* realign horizontally */ 1189f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->header.xmax = width-1; 1199f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1209f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->image_width = width; 1219f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->image_height = height; 1229f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->data_precision = 8; /* we can only handle 8 bit data */ 1239f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1249f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (source->header.ncolors == 1 && source->header.ncmap == 0) { 1259f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->visual = GRAYSCALE; 1269f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project TRACEMS2(cinfo, 1, JTRC_RLE_GRAY, width, height); 1279f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else if (source->header.ncolors == 1 && source->header.ncmap == 1) { 1289f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->visual = MAPPEDGRAY; 1299f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project TRACEMS3(cinfo, 1, JTRC_RLE_MAPGRAY, width, height, 1309f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1 << source->header.cmaplen); 1319f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else if (source->header.ncolors == 1 && source->header.ncmap == 3) { 1329f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->visual = PSEUDOCOLOR; 1339f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project TRACEMS3(cinfo, 1, JTRC_RLE_MAPPED, width, height, 1349f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1 << source->header.cmaplen); 1359f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else if (source->header.ncolors == 3 && source->header.ncmap == 3) { 1369f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->visual = TRUECOLOR; 1379f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project TRACEMS3(cinfo, 1, JTRC_RLE_FULLMAP, width, height, 1389f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1 << source->header.cmaplen); 1399f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else if (source->header.ncolors == 3 && source->header.ncmap == 0) { 1409f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->visual = DIRECTCOLOR; 1419f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project TRACEMS2(cinfo, 1, JTRC_RLE, width, height); 1429f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else 1439f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ERREXIT(cinfo, JERR_RLE_UNSUPPORTED); 1449f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1459f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (source->visual == GRAYSCALE || source->visual == MAPPEDGRAY) { 1469f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->in_color_space = JCS_GRAYSCALE; 1479f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->input_components = 1; 1489f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else { 1499f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->in_color_space = JCS_RGB; 1509f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cinfo->input_components = 3; 1519f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1529f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1539f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* 1549f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * A place to hold each scanline while it's converted. 1559f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * (GRAYSCALE scanlines don't need converting) 1569f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1579f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (source->visual != GRAYSCALE) { 1589f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->rle_row = (rle_pixel**) (*cinfo->mem->alloc_sarray) 1599f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, JPOOL_IMAGE, 1609f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (JDIMENSION) width, (JDIMENSION) cinfo->input_components); 1619f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1629f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1639f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* request a virtual array to hold the image */ 1649f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->image = (*cinfo->mem->request_virt_sarray) 1659f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, 1669f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (JDIMENSION) (width * source->header.ncolors), 1679f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (JDIMENSION) height, (JDIMENSION) 1); 1689f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1699f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 1709f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (progress != NULL) { 1719f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* count file input as separate pass */ 1729f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->total_extra_passes++; 1739f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 1749f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 1759f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1769f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.buffer_height = 1; 1779f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 1789f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1799f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1809f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 1819f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Read one row of pixels. 1829f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Called only after load_image has read the image into the virtual array. 1839f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Used for GRAYSCALE, MAPPEDGRAY, TRUECOLOR, and DIRECTCOLOR images. 1849f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 1859f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1869f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(JDIMENSION) 1879f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectget_rle_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) 1889f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 1899f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_source_ptr source = (rle_source_ptr) sinfo; 1909f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1919f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->row--; 1929f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.buffer = (*cinfo->mem->access_virt_sarray) 1939f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE); 1949f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1959f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project return 1; 1969f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 1979f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 1989f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 1999f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Read one row of pixels. 2009f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Called only after load_image has read the image into the virtual array. 2019f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Used for PSEUDOCOLOR images. 2029f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 2039f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2049f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(JDIMENSION) 2059f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectget_pseudocolor_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) 2069f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 2079f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_source_ptr source = (rle_source_ptr) sinfo; 2089f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JSAMPROW src_row, dest_row; 2099f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JDIMENSION col; 2109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_map *colormap; 2119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project int val; 2129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2139f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project colormap = source->header.cmap; 2149f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project dest_row = source->pub.buffer[0]; 2159f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->row--; 2169f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project src_row = * (*cinfo->mem->access_virt_sarray) 2179f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE); 2189f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2199f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (col = cinfo->image_width; col > 0; col--) { 2209f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project val = GETJSAMPLE(*src_row++); 2219f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *dest_row++ = (JSAMPLE) (colormap[val ] >> 8); 2229f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *dest_row++ = (JSAMPLE) (colormap[val + 256] >> 8); 2239f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *dest_row++ = (JSAMPLE) (colormap[val + 512] >> 8); 2249f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 2259f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2269f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project return 1; 2279f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 2289f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2299f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2309f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 2319f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Load the image into a virtual array. We have to do this because RLE 2329f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * files start at the lower left while the JPEG standard has them starting 2339f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * in the upper left. This is called the first time we want to get a row 2349f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * of input. What we do is load the RLE data into the array and then call 2359f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the appropriate routine to read one row from the array. Before returning, 2369f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * we set source->pub.get_pixel_rows so that subsequent calls go straight to 2379f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * the appropriate row-reading routine. 2389f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 2399f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2409f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(JDIMENSION) 2419f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) 2429f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 2439f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_source_ptr source = (rle_source_ptr) sinfo; 2449f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JDIMENSION row, col; 2459f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project JSAMPROW scanline, red_ptr, green_ptr, blue_ptr; 2469f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_pixel **rle_row; 2479f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_map *colormap; 2489f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project char channel; 2499f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 2509f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; 2519f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 2529f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2539f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project colormap = source->header.cmap; 2549f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_row = source->rle_row; 2559f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2569f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Read the RLE data into our virtual array. 2579f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * We assume here that (a) rle_pixel is represented the same as JSAMPLE, 2589f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * and (b) we are not on a machine where FAR pointers differ from regular. 2599f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 2609f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project RLE_CLR_BIT(source->header, RLE_ALPHA); /* don't read the alpha channel */ 2619f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2629f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 2639f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (progress != NULL) { 2649f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->pub.pass_limit = cinfo->image_height; 2659f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->pub.pass_counter = 0; 2669f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); 2679f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 2689f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 2699f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2709f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project switch (source->visual) { 2719f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2729f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case GRAYSCALE: 2739f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case PSEUDOCOLOR: 2749f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (row = 0; row < cinfo->image_height; row++) { 2759f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray) 2769f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE); 2779f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_getrow(&source->header, rle_row); 2789f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 2799f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (progress != NULL) { 2809f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->pub.pass_counter++; 2819f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); 2829f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 2839f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 2849f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 2859f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 2869f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2879f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case MAPPEDGRAY: 2889f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case TRUECOLOR: 2899f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (row = 0; row < cinfo->image_height; row++) { 2909f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project scanline = * (*cinfo->mem->access_virt_sarray) 2919f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE); 2929f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_row = source->rle_row; 2939f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_getrow(&source->header, rle_row); 2949f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 2959f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (col = 0; col < cinfo->image_width; col++) { 2969f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (channel = 0; channel < source->header.ncolors; channel++) { 2979f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *scanline++ = (JSAMPLE) 2989f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (colormap[GETJSAMPLE(rle_row[channel][col]) + 256 * channel] >> 8); 2999f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3009f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3019f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3029f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 3039f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (progress != NULL) { 3049f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->pub.pass_counter++; 3059f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); 3069f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3079f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 3089f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3099f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project break; 3109f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3119f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project case DIRECTCOLOR: 3129f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (row = 0; row < cinfo->image_height; row++) { 3139f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project scanline = * (*cinfo->mem->access_virt_sarray) 3149f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE); 3159f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_getrow(&source->header, rle_row); 3169f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3179f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project red_ptr = rle_row[0]; 3189f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project green_ptr = rle_row[1]; 3199f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project blue_ptr = rle_row[2]; 3209f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3219f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project for (col = cinfo->image_width; col > 0; col--) { 3229f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *scanline++ = *red_ptr++; 3239f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *scanline++ = *green_ptr++; 3249f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project *scanline++ = *blue_ptr++; 3259f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3269f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3279f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 3289f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (progress != NULL) { 3299f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->pub.pass_counter++; 3309f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); 3319f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3329f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 3339f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3349f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3359f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3369f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#ifdef PROGRESS_REPORT 3379f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (progress != NULL) 3389f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project progress->completed_extra_passes++; 3399f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif 3409f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3419f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Set up to call proper row-extraction routine in future */ 3429f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project if (source->visual == PSEUDOCOLOR) { 3439f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.buffer = source->rle_row; 3449f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.get_pixel_rows = get_pseudocolor_row; 3459f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } else { 3469f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.get_pixel_rows = get_rle_row; 3479f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project } 3489f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->row = cinfo->image_height; 3499f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3509f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* And fetch the topmost (bottommost) row */ 3519f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project return (*source->pub.get_pixel_rows) (cinfo, sinfo); 3529f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 3539f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3549f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3559f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 3569f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * Finish up at the end of the file. 3579f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 3589f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3599f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectMETHODDEF(void) 3609f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectfinish_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) 3619f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 3629f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* no work */ 3639f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 3649f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3659f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3669f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project/* 3679f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project * The module selection routine for RLE format input. 3689f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project */ 3699f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3709f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source ProjectGLOBAL(cjpeg_source_ptr) 3719f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Projectjinit_read_rle (j_compress_ptr cinfo) 3729f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project{ 3739f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project rle_source_ptr source; 3749f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3759f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Create module interface object */ 3769f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source = (rle_source_ptr) 3779f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 3789f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project SIZEOF(rle_source_struct)); 3799f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project /* Fill in method ptrs */ 3809f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.start_input = start_input_rle; 3819f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.finish_input = finish_input_rle; 3829f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project source->pub.get_pixel_rows = load_image; 3839f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3849f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project return (cjpeg_source_ptr) source; 3859f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project} 3869f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project 3879f5d49a1588e438ae7ceabd0c94172117e3303aaThe Android Open Source Project#endif /* RLE_SUPPORTED */ 388