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/**
* Copyright (c) 2005 Hin-Tak Leung. All rights reserved.
*
**/
/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
**/
#include <stdio.h>
#include <stdlib.h>
#define JPEG_INTERNALS
#include "jpeglib.h"
#include "i_job_info.h"
#include "mode12.h"
int i_compress_row(i_job_info_t *job_info,
char *ptr_row_current,
char *ptr_row_prev, int wbytes)
{
if (job_info->compressedbuffer == NULL)
{
job_info->compressedbuffer = (unsigned char *)calloc(1, job_info->pixel_h * 128 *4); /* worst case */
job_info->buffersize =(int *)calloc(1, sizeof(int));
if (job_info->qfactor)
{
jpeg_buffer_dest(job_info->cinfo, job_info->compressedbuffer, job_info->buffersize);
job_info->cinfo->write_JFIF_header = FALSE;
job_info->cinfo->write_Adobe_marker = FALSE;
jpeg_start_compress(job_info->cinfo, FALSE);
job_info->cinfo->master->call_pass_startup = FALSE;
jpeg_suppress_tables(job_info->cinfo, TRUE);
}
else
{
*(job_info->buffersize) = 2; /* dirty trick for mode 12 */
}
}
if(job_info->qfactor > 0)
{
JSAMPROW row_pointer[1];
row_pointer[0] = ptr_row_current;
jpeg_write_scanlines(job_info->cinfo, row_pointer, 1);
}
else
{
unsigned char *buffer = job_info->compressedbuffer + *(job_info->buffersize);
if (job_info->components == 1)
{
*(job_info->buffersize) += mode12gray_compress(job_info->pixel_h, ptr_row_current,
ptr_row_prev, buffer, job_info->cached_color);
}
else
{
*(job_info->buffersize) += mode12color_compress(job_info->pixel_h, ptr_row_current,
ptr_row_prev, buffer, job_info->cached_color);
}
}
return 0;
}
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