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/*
* This file is part of the OpenKinect Project. http://www.openkinect.org
*
* Copyright (c) 2010 individual OpenKinect contributors. See the CONTRIB file
* for details.
*
* This code is licensed to you under the terms of the Apache License, version
* 2.0, or, at your option, the terms of the GNU General Public License,
* version 2.0. See the APACHE20 and GPL2 files for the text of the licenses,
* or the following URLs:
* http://www.apache.org/licenses/LICENSE-2.0
* http://www.gnu.org/licenses/gpl-2.0.txt
*
* If you redistribute this file in source form, modified or unmodified, you
* may:
* 1) Leave this header intact and distribute it under the same terms,
* accompanying it with the APACHE20 and GPL20 files, or
* 2) Delete the Apache 2.0 clause and accompany it with the GPL2 file, or
* 3) Delete the GPL v2 clause and accompany it with the APACHE20 file
* In all cases you must keep the copyright notice intact and include a copy
* of the CONTRIB file.
*
* Binary distributions must follow the binary distribution requirements of
* either License.
*/
#include "as3_jpeg.h"
/*
* Compress RGB buffer in memory
*/
int RGB_2_JPEG(unsigned char *buffer, unsigned char **compressed, long unsigned int *new_len, int quality) {
struct jpeg_compress_struct cinfo = {0};
struct jpeg_error_mgr jerr;
JSAMPROW row_ptr[1];
int row_stride;
*compressed = NULL;
*new_len = 0;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_mem_dest(&cinfo, compressed, new_len);
cinfo.image_width = 640;
cinfo.image_height = 480;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, TRUE);
jpeg_start_compress(&cinfo, TRUE);
row_stride = 640 * 3;
while (cinfo.next_scanline < cinfo.image_height) {
row_ptr[0] = &buffer[cinfo.next_scanline * row_stride];
jpeg_write_scanlines(&cinfo, row_ptr, 1);
}
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
return 1;
}
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