You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
309 lines
6.8 KiB
309 lines
6.8 KiB
/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
|
|
|
|
Copyright (c) 2004 Dmitry Baryshev <ksquirrel@tut.by>
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation;
|
|
either version 2 of the License, or (at your option) any later
|
|
version.
|
|
|
|
This library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public License
|
|
as32 with this library; see the file COPYING. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include <csetjmp>
|
|
#include <iostream>
|
|
#include <cstdio>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "ksquirrel-libs/fmt_types.h"
|
|
#include "ksquirrel-libs/fileio.h"
|
|
#include "ksquirrel-libs/error.h"
|
|
#include "ksquirrel-libs/fmt_utils.h"
|
|
|
|
#include "fmt_codec_jpeg_defs.h"
|
|
#include "fmt_codec_jpeg.h"
|
|
|
|
#include "../xpm/codec_jpeg.xpm"
|
|
|
|
/*
|
|
*
|
|
* JPEG (Joint Photographic Experts Group) refers to a
|
|
* standards organization, a method of file compression, and sometimes a
|
|
* file format. In fact, the JPEG specification
|
|
* itself does not define a common file interchange
|
|
* format to store and transport JPEG data between
|
|
* computer platforms and operating systems. The JPEG
|
|
* File Interchange Format (JFIF) is a development of
|
|
* C-Cube Microsystems for the purpose of storing
|
|
* JPEG-encoded data. JFIF is
|
|
* designed to allow files containing JPEG-encoded
|
|
* data streams to be exchanged between otherwise incompatible systems
|
|
* and applications.
|
|
*
|
|
*/
|
|
|
|
METHODDEF(void) my_error_exit(j_common_ptr cinfo)
|
|
{
|
|
my_error_ptr myerr;
|
|
|
|
myerr = (my_error_ptr) cinfo->err;
|
|
|
|
(*cinfo->err->output_message) (cinfo);
|
|
|
|
longjmp(myerr->setjmp_buffer, 1);
|
|
}
|
|
|
|
fmt_codec::fmt_codec() : fmt_codec_base()
|
|
{}
|
|
|
|
fmt_codec::~fmt_codec()
|
|
{}
|
|
|
|
void fmt_codec::options(codec_options *o)
|
|
{
|
|
o->version = "1.3.4.1";
|
|
o->name = "JPEG compressed";
|
|
o->filter = "*.jpg *.jpeg *.jpe ";
|
|
o->config = "";
|
|
o->mime = "\x00FF\x00D8\x00FF";
|
|
o->mimetype = "image/jpeg";
|
|
o->pixmap = codec_jpeg;
|
|
o->readable = true;
|
|
o->canbemultiple = false;
|
|
o->writestatic = true;
|
|
o->writeanimated = false;
|
|
o->needtempfile = false;
|
|
}
|
|
|
|
s32 fmt_codec::read_init(const std::string &file)
|
|
{
|
|
zerror = false;
|
|
|
|
fptr = fopen(file.c_str(), "rb");
|
|
|
|
if(!fptr)
|
|
return SQE_R_NOFILE;
|
|
|
|
currentImage = -1;
|
|
|
|
finfo.animated = false;
|
|
|
|
return SQE_OK;
|
|
}
|
|
|
|
s32 fmt_codec::read_next()
|
|
{
|
|
currentImage++;
|
|
|
|
if(currentImage)
|
|
return SQE_NOTOK;
|
|
|
|
fmt_image image;
|
|
|
|
cinfo.err = jpeg_std_error(&jerr.pub);
|
|
jerr.pub.error_exit = my_error_exit;
|
|
|
|
if(setjmp(jerr.setjmp_buffer))
|
|
{
|
|
zerror = true;
|
|
return SQE_R_BADFILE;
|
|
}
|
|
|
|
jpeg_create_decompress(&cinfo);
|
|
jpeg_stdio_src(&cinfo, fptr);
|
|
jpeg_save_markers(&cinfo, JPEG_COM, 0xffff);
|
|
jpeg_read_header(&cinfo, TRUE);
|
|
|
|
if(cinfo.jpeg_color_space == JCS_GRAYSCALE)
|
|
{
|
|
cinfo.out_color_space = JCS_RGB;
|
|
cinfo.desired_number_of_colors = 256;
|
|
cinfo.quantize_colors = FALSE;
|
|
cinfo.two_pass_quantize = FALSE;
|
|
}
|
|
|
|
jpeg_start_decompress(&cinfo);
|
|
|
|
image.w = cinfo.output_width;
|
|
image.h = cinfo.output_height;
|
|
|
|
buffer = (*cinfo.mem->alloc_sarray)((j_common_ptr)&cinfo, JPOOL_IMAGE, cinfo.output_width * cinfo.output_components, 1);
|
|
|
|
std::string type;
|
|
|
|
switch(cinfo.jpeg_color_space)
|
|
{
|
|
case JCS_GRAYSCALE: type = "Grayscale"; image.bpp = 8; break;
|
|
case JCS_RGB: type = "RGB"; image.bpp = 24; break;
|
|
case JCS_YCbCr: type = "YUV"; image.bpp = 24; break;
|
|
case JCS_CMYK: type = "CMYK"; image.bpp = 32; break;
|
|
case JCS_YCCK: type = "YCCK"; image.bpp = 32; break;
|
|
|
|
default:
|
|
type = "Unknown";
|
|
}
|
|
|
|
image.compression = "JPEG";
|
|
image.colorspace = type;
|
|
|
|
jpeg_saved_marker_ptr it = cinfo.marker_list;
|
|
|
|
while(it)
|
|
{
|
|
if(it->marker == JPEG_COM)
|
|
{
|
|
fmt_metaentry mt;
|
|
|
|
mt.group = "Comment";
|
|
s8 data[it->data_length+1];
|
|
memcpy(data, it->data, it->data_length);
|
|
data[it->data_length] = '\0';
|
|
mt.data = data;
|
|
|
|
addmeta(mt);
|
|
|
|
break;
|
|
}
|
|
|
|
it = it->next;
|
|
}
|
|
|
|
finfo.image.push_back(image);
|
|
|
|
return SQE_OK;
|
|
}
|
|
|
|
s32 fmt_codec::read_next_pass()
|
|
{
|
|
return SQE_OK;
|
|
}
|
|
|
|
s32 fmt_codec::read_scanline(RGBA *scan)
|
|
{
|
|
fmt_image *im = image(currentImage);
|
|
fmt_utils::fillAlpha(scan, im->w);
|
|
|
|
if(zerror || setjmp(jerr.setjmp_buffer))
|
|
{
|
|
zerror = true;
|
|
return SQE_R_BADFILE;
|
|
}
|
|
|
|
(void)jpeg_read_scanlines(&cinfo, buffer, 1);
|
|
|
|
for(s32 i = 0;i < im->w;i++)
|
|
memcpy(scan+i, buffer[0] + i*3, 3);
|
|
|
|
return SQE_OK;
|
|
}
|
|
|
|
void fmt_codec::read_close()
|
|
{
|
|
jpeg_abort_decompress(&cinfo);
|
|
jpeg_destroy_decompress(&cinfo);
|
|
|
|
if(fptr)
|
|
fclose(fptr);
|
|
|
|
finfo.meta.clear();
|
|
finfo.image.clear();
|
|
}
|
|
|
|
void fmt_codec::getwriteoptions(fmt_writeoptionsabs *opt)
|
|
{
|
|
opt->interlaced = false;
|
|
opt->compression_scheme = CompressionInternal;
|
|
opt->compression_min = 0;
|
|
opt->compression_max = 100;
|
|
opt->compression_def = 25;
|
|
opt->passes = 1;
|
|
opt->needflip = false;
|
|
opt->palette_flags = 0 | fmt_image::pure32;
|
|
}
|
|
|
|
s32 fmt_codec::write_init(const std::string &file, const fmt_image &image, const fmt_writeoptions &opt)
|
|
{
|
|
if(!image.w || !image.h || file.empty())
|
|
return SQE_W_WRONGPARAMS;
|
|
|
|
writeimage = image;
|
|
writeopt = opt;
|
|
|
|
m_fptr = fopen(file.c_str(), "wb");
|
|
|
|
if(!m_fptr)
|
|
return SQE_W_NOFILE;
|
|
|
|
m_cinfo.err = jpeg_std_error(&m_jerr);
|
|
|
|
jpeg_create_compress(&m_cinfo);
|
|
|
|
jpeg_stdio_dest(&m_cinfo, m_fptr);
|
|
|
|
m_cinfo.image_width = image.w;
|
|
m_cinfo.image_height = image.h;
|
|
m_cinfo.input_components = 3;
|
|
m_cinfo.in_color_space = JCS_RGB;
|
|
|
|
jpeg_set_defaults(&m_cinfo);
|
|
|
|
jpeg_set_quality(&m_cinfo, 100-opt.compression_level, true);
|
|
|
|
jpeg_start_compress(&m_cinfo, true);
|
|
|
|
return SQE_OK;
|
|
}
|
|
|
|
s32 fmt_codec::write_next()
|
|
{
|
|
return SQE_OK;
|
|
}
|
|
|
|
s32 fmt_codec::write_next_pass()
|
|
{
|
|
return SQE_OK;
|
|
}
|
|
|
|
s32 fmt_codec::write_scanline(RGBA *scan)
|
|
{
|
|
RGB sr[writeimage.w];
|
|
|
|
for(s32 s = 0;s < writeimage.w;s++)
|
|
{
|
|
memcpy(sr+s, scan+s, sizeof(RGB));
|
|
}
|
|
|
|
row_pointer = (JSAMPLE *)sr;
|
|
|
|
(void)jpeg_write_scanlines(&m_cinfo, &row_pointer, 1);
|
|
|
|
return SQE_OK;
|
|
}
|
|
|
|
void fmt_codec::write_close()
|
|
{
|
|
jpeg_finish_compress(&m_cinfo);
|
|
|
|
fclose(m_fptr);
|
|
|
|
jpeg_destroy_compress(&m_cinfo);
|
|
}
|
|
|
|
std::string fmt_codec::extension(const s32 /*bpp*/)
|
|
{
|
|
return std::string("jpeg");
|
|
}
|
|
|
|
#include "fmt_codec_cd_func.h"
|