1f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 2f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * wrtarga.c 3f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 4f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Copyright (C) 1991-1996, Thomas G. Lane. 5f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This file is part of the Independent JPEG Group's software. 6f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * For conditions of distribution and use, see the accompanying README file. 7f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 8f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This file contains routines to write output images in Targa format. 9f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 10f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * These routines may need modification for non-Unix environments or 11f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * specialized applications. As they stand, they assume output to 12f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * an ordinary stdio stream. 13f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * 14f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Based on code contributed by Lee Daniel Crocker. 15f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 16f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 17f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ 18f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 19f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#ifdef TARGA_SUPPORTED 20f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 21f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 22f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 23f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * To support 12-bit JPEG data, we'd have to scale output down to 8 bits. 24f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * This is not yet implemented. 25f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 26f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 27f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#if BITS_IN_JSAMPLE != 8 28f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ 29f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#endif 30f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 31f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 32f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * The output buffer needs to be writable by fwrite(). On PCs, we must 33f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * allocate the buffer in near data space, because we are assuming small-data 34f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * memory model, wherein fwrite() can't reach far memory. If you need to 35f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * process very wide images on a PC, you might have to compile in large-memory 36f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * model, or else replace fwrite() with a putc() loop --- which will be much 37f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * slower. 38f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 39f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 40f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 41f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* Private version of data destination object */ 42f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 43f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgtypedef struct { 44f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org struct djpeg_dest_struct pub; /* public fields */ 45f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 46f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org char *iobuffer; /* physical I/O buffer */ 47f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org JDIMENSION buffer_width; /* width of one row */ 48f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} tga_dest_struct; 49f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 50f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgtypedef tga_dest_struct * tga_dest_ptr; 51f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 52f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 53f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgLOCAL(void) 54f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgwrite_header (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, int num_colors) 55f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* Create and write a Targa header */ 56f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 57f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org char targaheader[18]; 58f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 59f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Set unused fields of header to 0 */ 60f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org MEMZERO(targaheader, SIZEOF(targaheader)); 61f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 62f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (num_colors > 0) { 63f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[1] = 1; /* color map type 1 */ 64f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[5] = (char) (num_colors & 0xFF); 65f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[6] = (char) (num_colors >> 8); 66f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[7] = 24; /* 24 bits per cmap entry */ 67f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 68f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 69f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[12] = (char) (cinfo->output_width & 0xFF); 70f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[13] = (char) (cinfo->output_width >> 8); 71f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[14] = (char) (cinfo->output_height & 0xFF); 72f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[15] = (char) (cinfo->output_height >> 8); 73f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[17] = 0x20; /* Top-down, non-interlaced */ 74f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 75f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->out_color_space == JCS_GRAYSCALE) { 76f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[2] = 3; /* image type = uncompressed gray-scale */ 77f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[16] = 8; /* bits per pixel */ 78f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else { /* must be RGB */ 79f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (num_colors > 0) { 80f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[2] = 1; /* image type = colormapped RGB */ 81f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[16] = 8; 82f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else { 83f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[2] = 2; /* image type = uncompressed RGB */ 84f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org targaheader[16] = 24; 85f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 86f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 87f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 88f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (JFWRITE(dinfo->output_file, targaheader, 18) != (size_t) 18) 89f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT(cinfo, JERR_FILE_WRITE); 90f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 91f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 92f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 93f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 94f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Write some pixel data. 95f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * In this module rows_supplied will always be 1. 96f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 97f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 98f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgMETHODDEF(void) 99f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgput_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, 100f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org JDIMENSION rows_supplied) 101f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* used for unquantized full-color output */ 102f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 103f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org tga_dest_ptr dest = (tga_dest_ptr) dinfo; 104f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JSAMPROW inptr; 105f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register char * outptr; 106f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JDIMENSION col; 107f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 108f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org inptr = dest->pub.buffer[0]; 109f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outptr = dest->iobuffer; 110f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for (col = cinfo->output_width; col > 0; col--) { 111f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outptr[0] = (char) GETJSAMPLE(inptr[2]); /* RGB to BGR order */ 112f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outptr[1] = (char) GETJSAMPLE(inptr[1]); 113f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outptr[2] = (char) GETJSAMPLE(inptr[0]); 114f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org inptr += 3, outptr += 3; 115f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 116f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); 117f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 118f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 119f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgMETHODDEF(void) 120f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgput_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, 121f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org JDIMENSION rows_supplied) 122f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* used for grayscale OR quantized color output */ 123f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 124f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org tga_dest_ptr dest = (tga_dest_ptr) dinfo; 125f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JSAMPROW inptr; 126f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register char * outptr; 127f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JDIMENSION col; 128f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 129f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org inptr = dest->pub.buffer[0]; 130f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outptr = dest->iobuffer; 131f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for (col = cinfo->output_width; col > 0; col--) { 132f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org *outptr++ = (char) GETJSAMPLE(*inptr++); 133f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 134f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); 135f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 136f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 137f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 138f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 139f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Write some demapped pixel data when color quantization is in effect. 140f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * For Targa, this is only applied to grayscale data. 141f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 142f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 143f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgMETHODDEF(void) 144f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgput_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, 145f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org JDIMENSION rows_supplied) 146f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 147f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org tga_dest_ptr dest = (tga_dest_ptr) dinfo; 148f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JSAMPROW inptr; 149f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register char * outptr; 150f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JSAMPROW color_map0 = cinfo->colormap[0]; 151f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org register JDIMENSION col; 152f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 153f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org inptr = dest->pub.buffer[0]; 154f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outptr = dest->iobuffer; 155f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for (col = cinfo->output_width; col > 0; col--) { 156f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org *outptr++ = (char) GETJSAMPLE(color_map0[GETJSAMPLE(*inptr++)]); 157f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 158f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); 159f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 160f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 161f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 162f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 163f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Startup: write the file header. 164f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 165f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 166f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgMETHODDEF(void) 167f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgstart_output_tga (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) 168f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 169f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org tga_dest_ptr dest = (tga_dest_ptr) dinfo; 170f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org int num_colors, i; 171f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org FILE *outfile; 172f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 173f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->out_color_space == JCS_GRAYSCALE) { 174f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Targa doesn't have a mapped grayscale format, so we will */ 175f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* demap quantized gray output. Never emit a colormap. */ 176f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org write_header(cinfo, dinfo, 0); 177f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->quantize_colors) 178f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.put_pixel_rows = put_demapped_gray; 179f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org else 180f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.put_pixel_rows = put_gray_rows; 181f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else if (cinfo->out_color_space == JCS_RGB) { 182f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (cinfo->quantize_colors) { 183f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* We only support 8-bit colormap indexes, so only 256 colors */ 184f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org num_colors = cinfo->actual_number_of_colors; 185f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (num_colors > 256) 186f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT1(cinfo, JERR_TOO_MANY_COLORS, num_colors); 187f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org write_header(cinfo, dinfo, num_colors); 188f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Write the colormap. Note Targa uses BGR byte order */ 189f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org outfile = dest->pub.output_file; 190f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org for (i = 0; i < num_colors; i++) { 191f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org putc(GETJSAMPLE(cinfo->colormap[2][i]), outfile); 192f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org putc(GETJSAMPLE(cinfo->colormap[1][i]), outfile); 193f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org putc(GETJSAMPLE(cinfo->colormap[0][i]), outfile); 194f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 195f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.put_pixel_rows = put_gray_rows; 196f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else { 197f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org write_header(cinfo, dinfo, 0); 198f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.put_pixel_rows = put_pixel_rows; 199f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 200f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } else { 201f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT(cinfo, JERR_TGA_COLORSPACE); 202f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org } 203f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 204f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 205f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 206f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 207f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * Finish up at the end of the file. 208f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 209f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 210f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgMETHODDEF(void) 211f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgfinish_output_tga (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) 212f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 213f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Make sure we wrote the output file OK */ 214f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org fflush(dinfo->output_file); 215f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org if (ferror(dinfo->output_file)) 216f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ERREXIT(cinfo, JERR_FILE_WRITE); 217f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 218f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 219f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 220f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org/* 221f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org * The module selection routine for Targa format output. 222f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org */ 223f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 224f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgGLOBAL(djpeg_dest_ptr) 225f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.orgjinit_write_targa (j_decompress_ptr cinfo) 226f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org{ 227f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org tga_dest_ptr dest; 228f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 229f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Create module interface object, fill in method pointers */ 230f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest = (tga_dest_ptr) 231f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 232f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org SIZEOF(tga_dest_struct)); 233f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.start_output = start_output_tga; 234f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.finish_output = finish_output_tga; 235f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 236f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Calculate output image dimensions so we can allocate space */ 237f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org jpeg_calc_output_dimensions(cinfo); 238f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 239f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Create I/O buffer. Note we make this near on a PC. */ 240f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->buffer_width = cinfo->output_width * cinfo->output_components; 241f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->iobuffer = (char *) 242f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 243f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org (size_t) (dest->buffer_width * SIZEOF(char))); 244f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 245f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org /* Create decompressor output buffer. */ 246f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.buffer = (*cinfo->mem->alloc_sarray) 247f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width, (JDIMENSION) 1); 248f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org dest->pub.buffer_height = 1; 249f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 250f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org return (djpeg_dest_ptr) dest; 251f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org} 252f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org 253f0c4f33a4aa0760ba0e12a254b69d996442c9c5hbono@chromium.org#endif /* TARGA_SUPPORTED */ 254