Shoaib Ahmed / Mbed 2 deprecated uzairkhan

Final 350 project

Dependencies:   uzair Camera_LS_Y201 F7_Ethernet LCD_DISCO_F746NG NetworkAPI SDFileSystem mbed

includes/wrrle.c@0:791a779d6220, 2017-07-31 (annotated)

Committer:
shoaib_ahmed
Date:
Mon Jul 31 09:16:35 2017 +0000
Revision:
0:791a779d6220
final project;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shoaib_ahmed 0:791a779d6220 1 /*
shoaib_ahmed 0:791a779d6220 2 * wrrle.c
shoaib_ahmed 0:791a779d6220 3 *
shoaib_ahmed 0:791a779d6220 4 * Copyright (C) 1991-1996, Thomas G. Lane.
shoaib_ahmed 0:791a779d6220 5 * This file is part of the Independent JPEG Group's software.
shoaib_ahmed 0:791a779d6220 6 * For conditions of distribution and use, see the accompanying README file.
shoaib_ahmed 0:791a779d6220 7 *
shoaib_ahmed 0:791a779d6220 8 * This file contains routines to write output images in RLE format.
shoaib_ahmed 0:791a779d6220 9 * The Utah Raster Toolkit library is required (version 3.1 or later).
shoaib_ahmed 0:791a779d6220 10 *
shoaib_ahmed 0:791a779d6220 11 * These routines may need modification for non-Unix environments or
shoaib_ahmed 0:791a779d6220 12 * specialized applications. As they stand, they assume output to
shoaib_ahmed 0:791a779d6220 13 * an ordinary stdio stream.
shoaib_ahmed 0:791a779d6220 14 *
shoaib_ahmed 0:791a779d6220 15 * Based on code contributed by Mike Lijewski,
shoaib_ahmed 0:791a779d6220 16 * with updates from Robert Hutchinson.
shoaib_ahmed 0:791a779d6220 17 */
shoaib_ahmed 0:791a779d6220 18
shoaib_ahmed 0:791a779d6220 19 #include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */
shoaib_ahmed 0:791a779d6220 20
shoaib_ahmed 0:791a779d6220 21 #ifdef RLE_SUPPORTED
shoaib_ahmed 0:791a779d6220 22
shoaib_ahmed 0:791a779d6220 23 /* rle.h is provided by the Utah Raster Toolkit. */
shoaib_ahmed 0:791a779d6220 24
shoaib_ahmed 0:791a779d6220 25 #include <rle.h>
shoaib_ahmed 0:791a779d6220 26
shoaib_ahmed 0:791a779d6220 27 /*
shoaib_ahmed 0:791a779d6220 28 * We assume that JSAMPLE has the same representation as rle_pixel,
shoaib_ahmed 0:791a779d6220 29 * to wit, "unsigned char". Hence we can't cope with 12- or 16-bit samples.
shoaib_ahmed 0:791a779d6220 30 */
shoaib_ahmed 0:791a779d6220 31
shoaib_ahmed 0:791a779d6220 32 #if BITS_IN_JSAMPLE != 8
shoaib_ahmed 0:791a779d6220 33 Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */
shoaib_ahmed 0:791a779d6220 34 #endif
shoaib_ahmed 0:791a779d6220 35
shoaib_ahmed 0:791a779d6220 36
shoaib_ahmed 0:791a779d6220 37 /*
shoaib_ahmed 0:791a779d6220 38 * Since RLE stores scanlines bottom-to-top, we have to invert the image
shoaib_ahmed 0:791a779d6220 39 * from JPEG's top-to-bottom order. To do this, we save the outgoing data
shoaib_ahmed 0:791a779d6220 40 * in a virtual array during put_pixel_row calls, then actually emit the
shoaib_ahmed 0:791a779d6220 41 * RLE file during finish_output.
shoaib_ahmed 0:791a779d6220 42 */
shoaib_ahmed 0:791a779d6220 43
shoaib_ahmed 0:791a779d6220 44
shoaib_ahmed 0:791a779d6220 45 /*
shoaib_ahmed 0:791a779d6220 46 * For now, if we emit an RLE color map then it is always 256 entries long,
shoaib_ahmed 0:791a779d6220 47 * though not all of the entries need be used.
shoaib_ahmed 0:791a779d6220 48 */
shoaib_ahmed 0:791a779d6220 49
shoaib_ahmed 0:791a779d6220 50 #define CMAPBITS 8
shoaib_ahmed 0:791a779d6220 51 #define CMAPLENGTH (1<<(CMAPBITS))
shoaib_ahmed 0:791a779d6220 52
shoaib_ahmed 0:791a779d6220 53 typedef struct {
shoaib_ahmed 0:791a779d6220 54 struct djpeg_dest_struct pub; /* public fields */
shoaib_ahmed 0:791a779d6220 55
shoaib_ahmed 0:791a779d6220 56 jvirt_sarray_ptr image; /* virtual array to store the output image */
shoaib_ahmed 0:791a779d6220 57 rle_map *colormap; /* RLE-style color map, or NULL if none */
shoaib_ahmed 0:791a779d6220 58 rle_pixel **rle_row; /* To pass rows to rle_putrow() */
shoaib_ahmed 0:791a779d6220 59
shoaib_ahmed 0:791a779d6220 60 } rle_dest_struct;
shoaib_ahmed 0:791a779d6220 61
shoaib_ahmed 0:791a779d6220 62 typedef rle_dest_struct * rle_dest_ptr;
shoaib_ahmed 0:791a779d6220 63
shoaib_ahmed 0:791a779d6220 64 /* Forward declarations */
shoaib_ahmed 0:791a779d6220 65 METHODDEF(void) rle_put_pixel_rows
shoaib_ahmed 0:791a779d6220 66 JPP((j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
shoaib_ahmed 0:791a779d6220 67 JDIMENSION rows_supplied));
shoaib_ahmed 0:791a779d6220 68
shoaib_ahmed 0:791a779d6220 69
shoaib_ahmed 0:791a779d6220 70 /*
shoaib_ahmed 0:791a779d6220 71 * Write the file header.
shoaib_ahmed 0:791a779d6220 72 *
shoaib_ahmed 0:791a779d6220 73 * In this module it's easier to wait till finish_output to write anything.
shoaib_ahmed 0:791a779d6220 74 */
shoaib_ahmed 0:791a779d6220 75
shoaib_ahmed 0:791a779d6220 76 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 77 start_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
shoaib_ahmed 0:791a779d6220 78 {
shoaib_ahmed 0:791a779d6220 79 rle_dest_ptr dest = (rle_dest_ptr) dinfo;
shoaib_ahmed 0:791a779d6220 80 size_t cmapsize;
shoaib_ahmed 0:791a779d6220 81 int i, ci;
shoaib_ahmed 0:791a779d6220 82 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 83 cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;
shoaib_ahmed 0:791a779d6220 84 #endif
shoaib_ahmed 0:791a779d6220 85
shoaib_ahmed 0:791a779d6220 86 /*
shoaib_ahmed 0:791a779d6220 87 * Make sure the image can be stored in RLE format.
shoaib_ahmed 0:791a779d6220 88 *
shoaib_ahmed 0:791a779d6220 89 * - RLE stores image dimensions as *signed* 16 bit integers. JPEG
shoaib_ahmed 0:791a779d6220 90 * uses unsigned, so we have to check the width.
shoaib_ahmed 0:791a779d6220 91 *
shoaib_ahmed 0:791a779d6220 92 * - Colorspace is expected to be grayscale or RGB.
shoaib_ahmed 0:791a779d6220 93 *
shoaib_ahmed 0:791a779d6220 94 * - The number of channels (components) is expected to be 1 (grayscale/
shoaib_ahmed 0:791a779d6220 95 * pseudocolor) or 3 (truecolor/directcolor).
shoaib_ahmed 0:791a779d6220 96 * (could be 2 or 4 if using an alpha channel, but we aren't)
shoaib_ahmed 0:791a779d6220 97 */
shoaib_ahmed 0:791a779d6220 98
shoaib_ahmed 0:791a779d6220 99 if (cinfo->output_width > 32767 || cinfo->output_height > 32767)
shoaib_ahmed 0:791a779d6220 100 ERREXIT2(cinfo, JERR_RLE_DIMENSIONS, cinfo->output_width,
shoaib_ahmed 0:791a779d6220 101 cinfo->output_height);
shoaib_ahmed 0:791a779d6220 102
shoaib_ahmed 0:791a779d6220 103 if (cinfo->out_color_space != JCS_GRAYSCALE &&
shoaib_ahmed 0:791a779d6220 104 cinfo->out_color_space != JCS_RGB)
shoaib_ahmed 0:791a779d6220 105 ERREXIT(cinfo, JERR_RLE_COLORSPACE);
shoaib_ahmed 0:791a779d6220 106
shoaib_ahmed 0:791a779d6220 107 if (cinfo->output_components != 1 && cinfo->output_components != 3)
shoaib_ahmed 0:791a779d6220 108 ERREXIT1(cinfo, JERR_RLE_TOOMANYCHANNELS, cinfo->num_components);
shoaib_ahmed 0:791a779d6220 109
shoaib_ahmed 0:791a779d6220 110 /* Convert colormap, if any, to RLE format. */
shoaib_ahmed 0:791a779d6220 111
shoaib_ahmed 0:791a779d6220 112 dest->colormap = NULL;
shoaib_ahmed 0:791a779d6220 113
shoaib_ahmed 0:791a779d6220 114 if (cinfo->quantize_colors) {
shoaib_ahmed 0:791a779d6220 115 /* Allocate storage for RLE-style cmap, zero any extra entries */
shoaib_ahmed 0:791a779d6220 116 cmapsize = cinfo->out_color_components * CMAPLENGTH * SIZEOF(rle_map);
shoaib_ahmed 0:791a779d6220 117 dest->colormap = (rle_map *) (*cinfo->mem->alloc_small)
shoaib_ahmed 0:791a779d6220 118 ((j_common_ptr) cinfo, JPOOL_IMAGE, cmapsize);
shoaib_ahmed 0:791a779d6220 119 MEMZERO(dest->colormap, cmapsize);
shoaib_ahmed 0:791a779d6220 120
shoaib_ahmed 0:791a779d6220 121 /* Save away data in RLE format --- note 8-bit left shift! */
shoaib_ahmed 0:791a779d6220 122 /* Shifting would need adjustment for JSAMPLEs wider than 8 bits. */
shoaib_ahmed 0:791a779d6220 123 for (ci = 0; ci < cinfo->out_color_components; ci++) {
shoaib_ahmed 0:791a779d6220 124 for (i = 0; i < cinfo->actual_number_of_colors; i++) {
shoaib_ahmed 0:791a779d6220 125 dest->colormap[ci * CMAPLENGTH + i] =
shoaib_ahmed 0:791a779d6220 126 GETJSAMPLE(cinfo->colormap[ci][i]) << 8;
shoaib_ahmed 0:791a779d6220 127 }
shoaib_ahmed 0:791a779d6220 128 }
shoaib_ahmed 0:791a779d6220 129 }
shoaib_ahmed 0:791a779d6220 130
shoaib_ahmed 0:791a779d6220 131 /* Set the output buffer to the first row */
shoaib_ahmed 0:791a779d6220 132 dest->pub.buffer = (*cinfo->mem->access_virt_sarray)
shoaib_ahmed 0:791a779d6220 133 ((j_common_ptr) cinfo, dest->image, (JDIMENSION) 0, (JDIMENSION) 1, TRUE);
shoaib_ahmed 0:791a779d6220 134 dest->pub.buffer_height = 1;
shoaib_ahmed 0:791a779d6220 135
shoaib_ahmed 0:791a779d6220 136 dest->pub.put_pixel_rows = rle_put_pixel_rows;
shoaib_ahmed 0:791a779d6220 137
shoaib_ahmed 0:791a779d6220 138 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 139 if (progress != NULL) {
shoaib_ahmed 0:791a779d6220 140 progress->total_extra_passes++; /* count file writing as separate pass */
shoaib_ahmed 0:791a779d6220 141 }
shoaib_ahmed 0:791a779d6220 142 #endif
shoaib_ahmed 0:791a779d6220 143 }
shoaib_ahmed 0:791a779d6220 144
shoaib_ahmed 0:791a779d6220 145
shoaib_ahmed 0:791a779d6220 146 /*
shoaib_ahmed 0:791a779d6220 147 * Write some pixel data.
shoaib_ahmed 0:791a779d6220 148 *
shoaib_ahmed 0:791a779d6220 149 * This routine just saves the data away in a virtual array.
shoaib_ahmed 0:791a779d6220 150 */
shoaib_ahmed 0:791a779d6220 151
shoaib_ahmed 0:791a779d6220 152 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 153 rle_put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
shoaib_ahmed 0:791a779d6220 154 JDIMENSION rows_supplied)
shoaib_ahmed 0:791a779d6220 155 {
shoaib_ahmed 0:791a779d6220 156 rle_dest_ptr dest = (rle_dest_ptr) dinfo;
shoaib_ahmed 0:791a779d6220 157
shoaib_ahmed 0:791a779d6220 158 if (cinfo->output_scanline < cinfo->output_height) {
shoaib_ahmed 0:791a779d6220 159 dest->pub.buffer = (*cinfo->mem->access_virt_sarray)
shoaib_ahmed 0:791a779d6220 160 ((j_common_ptr) cinfo, dest->image,
shoaib_ahmed 0:791a779d6220 161 cinfo->output_scanline, (JDIMENSION) 1, TRUE);
shoaib_ahmed 0:791a779d6220 162 }
shoaib_ahmed 0:791a779d6220 163 }
shoaib_ahmed 0:791a779d6220 164
shoaib_ahmed 0:791a779d6220 165 /*
shoaib_ahmed 0:791a779d6220 166 * Finish up at the end of the file.
shoaib_ahmed 0:791a779d6220 167 *
shoaib_ahmed 0:791a779d6220 168 * Here is where we really output the RLE file.
shoaib_ahmed 0:791a779d6220 169 */
shoaib_ahmed 0:791a779d6220 170
shoaib_ahmed 0:791a779d6220 171 METHODDEF(void)
shoaib_ahmed 0:791a779d6220 172 finish_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
shoaib_ahmed 0:791a779d6220 173 {
shoaib_ahmed 0:791a779d6220 174 rle_dest_ptr dest = (rle_dest_ptr) dinfo;
shoaib_ahmed 0:791a779d6220 175 rle_hdr header; /* Output file information */
shoaib_ahmed 0:791a779d6220 176 rle_pixel **rle_row, *red, *green, *blue;
shoaib_ahmed 0:791a779d6220 177 JSAMPROW output_row;
shoaib_ahmed 0:791a779d6220 178 char cmapcomment[80];
shoaib_ahmed 0:791a779d6220 179 int row, col;
shoaib_ahmed 0:791a779d6220 180 int ci;
shoaib_ahmed 0:791a779d6220 181 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 182 cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress;
shoaib_ahmed 0:791a779d6220 183 #endif
shoaib_ahmed 0:791a779d6220 184
shoaib_ahmed 0:791a779d6220 185 /* Initialize the header info */
shoaib_ahmed 0:791a779d6220 186 header = *rle_hdr_init(NULL);
shoaib_ahmed 0:791a779d6220 187 header.rle_file = dest->pub.output_file;
shoaib_ahmed 0:791a779d6220 188 header.xmin = 0;
shoaib_ahmed 0:791a779d6220 189 header.xmax = cinfo->output_width - 1;
shoaib_ahmed 0:791a779d6220 190 header.ymin = 0;
shoaib_ahmed 0:791a779d6220 191 header.ymax = cinfo->output_height - 1;
shoaib_ahmed 0:791a779d6220 192 header.alpha = 0;
shoaib_ahmed 0:791a779d6220 193 header.ncolors = cinfo->output_components;
shoaib_ahmed 0:791a779d6220 194 for (ci = 0; ci < cinfo->output_components; ci++) {
shoaib_ahmed 0:791a779d6220 195 RLE_SET_BIT(header, ci);
shoaib_ahmed 0:791a779d6220 196 }
shoaib_ahmed 0:791a779d6220 197 if (cinfo->quantize_colors) {
shoaib_ahmed 0:791a779d6220 198 header.ncmap = cinfo->out_color_components;
shoaib_ahmed 0:791a779d6220 199 header.cmaplen = CMAPBITS;
shoaib_ahmed 0:791a779d6220 200 header.cmap = dest->colormap;
shoaib_ahmed 0:791a779d6220 201 /* Add a comment to the output image with the true colormap length. */
shoaib_ahmed 0:791a779d6220 202 sprintf(cmapcomment, "color_map_length=%d", cinfo->actual_number_of_colors);
shoaib_ahmed 0:791a779d6220 203 rle_putcom(cmapcomment, &header);
shoaib_ahmed 0:791a779d6220 204 }
shoaib_ahmed 0:791a779d6220 205
shoaib_ahmed 0:791a779d6220 206 /* Emit the RLE header and color map (if any) */
shoaib_ahmed 0:791a779d6220 207 rle_put_setup(&header);
shoaib_ahmed 0:791a779d6220 208
shoaib_ahmed 0:791a779d6220 209 /* Now output the RLE data from our virtual array.
shoaib_ahmed 0:791a779d6220 210 * We assume here that (a) rle_pixel is represented the same as JSAMPLE,
shoaib_ahmed 0:791a779d6220 211 * and (b) we are not on a machine where FAR pointers differ from regular.
shoaib_ahmed 0:791a779d6220 212 */
shoaib_ahmed 0:791a779d6220 213
shoaib_ahmed 0:791a779d6220 214 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 215 if (progress != NULL) {
shoaib_ahmed 0:791a779d6220 216 progress->pub.pass_limit = cinfo->output_height;
shoaib_ahmed 0:791a779d6220 217 progress->pub.pass_counter = 0;
shoaib_ahmed 0:791a779d6220 218 (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
shoaib_ahmed 0:791a779d6220 219 }
shoaib_ahmed 0:791a779d6220 220 #endif
shoaib_ahmed 0:791a779d6220 221
shoaib_ahmed 0:791a779d6220 222 if (cinfo->output_components == 1) {
shoaib_ahmed 0:791a779d6220 223 for (row = cinfo->output_height-1; row >= 0; row--) {
shoaib_ahmed 0:791a779d6220 224 rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray)
shoaib_ahmed 0:791a779d6220 225 ((j_common_ptr) cinfo, dest->image,
shoaib_ahmed 0:791a779d6220 226 (JDIMENSION) row, (JDIMENSION) 1, FALSE);
shoaib_ahmed 0:791a779d6220 227 rle_putrow(rle_row, (int) cinfo->output_width, &header);
shoaib_ahmed 0:791a779d6220 228 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 229 if (progress != NULL) {
shoaib_ahmed 0:791a779d6220 230 progress->pub.pass_counter++;
shoaib_ahmed 0:791a779d6220 231 (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
shoaib_ahmed 0:791a779d6220 232 }
shoaib_ahmed 0:791a779d6220 233 #endif
shoaib_ahmed 0:791a779d6220 234 }
shoaib_ahmed 0:791a779d6220 235 } else {
shoaib_ahmed 0:791a779d6220 236 for (row = cinfo->output_height-1; row >= 0; row--) {
shoaib_ahmed 0:791a779d6220 237 rle_row = (rle_pixel **) dest->rle_row;
shoaib_ahmed 0:791a779d6220 238 output_row = * (*cinfo->mem->access_virt_sarray)
shoaib_ahmed 0:791a779d6220 239 ((j_common_ptr) cinfo, dest->image,
shoaib_ahmed 0:791a779d6220 240 (JDIMENSION) row, (JDIMENSION) 1, FALSE);
shoaib_ahmed 0:791a779d6220 241 red = rle_row[0];
shoaib_ahmed 0:791a779d6220 242 green = rle_row[1];
shoaib_ahmed 0:791a779d6220 243 blue = rle_row[2];
shoaib_ahmed 0:791a779d6220 244 for (col = cinfo->output_width; col > 0; col--) {
shoaib_ahmed 0:791a779d6220 245 *red++ = GETJSAMPLE(*output_row++);
shoaib_ahmed 0:791a779d6220 246 *green++ = GETJSAMPLE(*output_row++);
shoaib_ahmed 0:791a779d6220 247 *blue++ = GETJSAMPLE(*output_row++);
shoaib_ahmed 0:791a779d6220 248 }
shoaib_ahmed 0:791a779d6220 249 rle_putrow(rle_row, (int) cinfo->output_width, &header);
shoaib_ahmed 0:791a779d6220 250 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 251 if (progress != NULL) {
shoaib_ahmed 0:791a779d6220 252 progress->pub.pass_counter++;
shoaib_ahmed 0:791a779d6220 253 (*progress->pub.progress_monitor) ((j_common_ptr) cinfo);
shoaib_ahmed 0:791a779d6220 254 }
shoaib_ahmed 0:791a779d6220 255 #endif
shoaib_ahmed 0:791a779d6220 256 }
shoaib_ahmed 0:791a779d6220 257 }
shoaib_ahmed 0:791a779d6220 258
shoaib_ahmed 0:791a779d6220 259 #ifdef PROGRESS_REPORT
shoaib_ahmed 0:791a779d6220 260 if (progress != NULL)
shoaib_ahmed 0:791a779d6220 261 progress->completed_extra_passes++;
shoaib_ahmed 0:791a779d6220 262 #endif
shoaib_ahmed 0:791a779d6220 263
shoaib_ahmed 0:791a779d6220 264 /* Emit file trailer */
shoaib_ahmed 0:791a779d6220 265 rle_puteof(&header);
shoaib_ahmed 0:791a779d6220 266 fflush(dest->pub.output_file);
shoaib_ahmed 0:791a779d6220 267 if (ferror(dest->pub.output_file))
shoaib_ahmed 0:791a779d6220 268 ERREXIT(cinfo, JERR_FILE_WRITE);
shoaib_ahmed 0:791a779d6220 269 }
shoaib_ahmed 0:791a779d6220 270
shoaib_ahmed 0:791a779d6220 271
shoaib_ahmed 0:791a779d6220 272 /*
shoaib_ahmed 0:791a779d6220 273 * The module selection routine for RLE format output.
shoaib_ahmed 0:791a779d6220 274 */
shoaib_ahmed 0:791a779d6220 275
shoaib_ahmed 0:791a779d6220 276 GLOBAL(djpeg_dest_ptr)
shoaib_ahmed 0:791a779d6220 277 jinit_write_rle (j_decompress_ptr cinfo)
shoaib_ahmed 0:791a779d6220 278 {
shoaib_ahmed 0:791a779d6220 279 rle_dest_ptr dest;
shoaib_ahmed 0:791a779d6220 280
shoaib_ahmed 0:791a779d6220 281 /* Create module interface object, fill in method pointers */
shoaib_ahmed 0:791a779d6220 282 dest = (rle_dest_ptr)
shoaib_ahmed 0:791a779d6220 283 (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
shoaib_ahmed 0:791a779d6220 284 SIZEOF(rle_dest_struct));
shoaib_ahmed 0:791a779d6220 285 dest->pub.start_output = start_output_rle;
shoaib_ahmed 0:791a779d6220 286 dest->pub.finish_output = finish_output_rle;
shoaib_ahmed 0:791a779d6220 287
shoaib_ahmed 0:791a779d6220 288 /* Calculate output image dimensions so we can allocate space */
shoaib_ahmed 0:791a779d6220 289 jpeg_calc_output_dimensions(cinfo);
shoaib_ahmed 0:791a779d6220 290
shoaib_ahmed 0:791a779d6220 291 /* Allocate a work array for output to the RLE library. */
shoaib_ahmed 0:791a779d6220 292 dest->rle_row = (*cinfo->mem->alloc_sarray)
shoaib_ahmed 0:791a779d6220 293 ((j_common_ptr) cinfo, JPOOL_IMAGE,
shoaib_ahmed 0:791a779d6220 294 cinfo->output_width, (JDIMENSION) cinfo->output_components);
shoaib_ahmed 0:791a779d6220 295
shoaib_ahmed 0:791a779d6220 296 /* Allocate a virtual array to hold the image. */
shoaib_ahmed 0:791a779d6220 297 dest->image = (*cinfo->mem->request_virt_sarray)
shoaib_ahmed 0:791a779d6220 298 ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
shoaib_ahmed 0:791a779d6220 299 (JDIMENSION) (cinfo->output_width * cinfo->output_components),
shoaib_ahmed 0:791a779d6220 300 cinfo->output_height, (JDIMENSION) 1);
shoaib_ahmed 0:791a779d6220 301
shoaib_ahmed 0:791a779d6220 302 return (djpeg_dest_ptr) dest;
shoaib_ahmed 0:791a779d6220 303 }
shoaib_ahmed 0:791a779d6220 304
shoaib_ahmed 0:791a779d6220 305 #endif /* RLE_SUPPORTED */