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/** \file
*
* \author This code was written by Nathan Stenzel for gphoto
*
* \note
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* \note
* 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
* Lesser General Public License for more details.
*
* \note
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef LIBGPHOTO2_JPEG_H
#define LIBGPHOTO2_JPEG_H
#include <gphoto2/gphoto2-file.h>
typedef enum {
JPEG_START=0xD8, JPEG_COMMENT=0xFE, JPEG_APPO=0xE0,
JPEG_QUANTIZATION=0xDB, JPEG_HUFFMAN=0xC4, JPEG_SOFC0=0xC0,
JPEG_SSSEAHAL=0xDA, JPEG_EOI=0xD9
} jpegmarker;
typedef struct chunk{
int size;
unsigned char *data;
} chunk;
typedef char jpeg_quantization_table[64];
typedef struct jpeg {
int count;
struct chunk *marker[20]; /* I think this should be big enough */
}jpeg;
chunk *gpi_jpeg_chunk_new(int length);
chunk *gpi_jpeg_chunk_new_filled(int length, char *data);
void gpi_jpeg_chunk_destroy(chunk *mychunk);
void gpi_jpeg_chunk_print(chunk *mychunk);
char gpi_jpeg_findff(int *location, chunk *picture);
char gpi_jpeg_findactivemarker(char *id, int *location, chunk *picture);
char *gpi_jpeg_markername(unsigned int c);
jpeg *gpi_jpeg_new (void);
void gpi_jpeg_destroy (jpeg *myjpeg);
void gpi_jpeg_add_marker (jpeg *myjpeg, chunk *picture, int start, int end);
void gpi_jpeg_add_chunk (jpeg *myjpeg, chunk *source);
void gpi_jpeg_parse (jpeg *myjpeg, chunk *picture);
void gpi_jpeg_print (jpeg *myjpeg);
chunk *gpi_jpeg_make_start (void);
chunk *gpi_jpeg_make_SOFC (int width, int height,
char vh1, char vh2, char vh3,
char q1, char q2, char q3);
chunk *gpi_jpeg_makeSsSeAhAl (int huffset1, int huffset2, int huffset3);
void gpi_jpeg_print_quantization_table(jpeg_quantization_table *table);
chunk *gpi_jpeg_make_quantization(const jpeg_quantization_table * table, char number);
jpeg_quantization_table *gpi_jpeg_quantization2table(chunk *qmarker);
jpeg *gpi_jpeg_header(int width, int height,
char vh1, char vh2, char vh3,
char q1, char q2, char q3,
const jpeg_quantization_table *quant1, const jpeg_quantization_table *quant2,
char huffset1, char huffset2, char huffset3,
chunk *huff1, chunk *huff2, chunk *huff3, chunk *huff4);
char gpi_jpeg_write(CameraFile *file, const char *name, jpeg *myjpeg);
#endif /* !defined(LIBGPHOTO2_JPEG_H) */
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