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00020 #ifndef __GPHOTO2_JPEG_H__
00021 #define __GPHOTO2_JPEG_H__
00022
00023 #include <gphoto2-file.h>
00024
00025 typedef enum {
00026 JPEG_START=0xD8, JPEG_COMMENT=0xFE, JPEG_APPO=0xE0,
00027 JPEG_QUANTIZATION=0xDB, JPEG_HUFFMAN=0xC4, JPEG_SOFC0=0xC0,
00028 JPEG_SSSEAHAL=0xDA, JPEG_EOI=0xD9
00029 } jpegmarker;
00030
00031 typedef struct chunk{
00032 int size;
00033 unsigned char *data;
00034 } chunk;
00035
00036 typedef char jpeg_quantization_table[64];
00037
00038 typedef struct jpeg {
00039 int count;
00040 struct chunk *marker[20];
00041 }jpeg;
00042
00043 chunk *gpi_jpeg_chunk_new(int length);
00044 chunk *gpi_jpeg_chunk_new_filled(int length, char *data);
00045 void gpi_jpeg_chunk_destroy(chunk *mychunk);
00046 void gpi_jpeg_chunk_print(chunk *mychunk);
00047
00048 char gpi_jpeg_findff(int *location, chunk *picture);
00049 char gpi_jpeg_findactivemarker(char *id, int *location, chunk *picture);
00050 char *gpi_jpeg_markername(int c);
00051
00052 jpeg *gpi_jpeg_new (void);
00053 void gpi_jpeg_destroy (jpeg *myjpeg);
00054 void gpi_jpeg_add_marker (jpeg *myjpeg, chunk *picture, int start, int end);
00055 void gpi_jpeg_add_chunk (jpeg *myjpeg, chunk *source);
00056 void gpi_jpeg_parse (jpeg *myjpeg, chunk *picture);
00057 void gpi_jpeg_print (jpeg *myjpeg);
00058
00059 chunk *gpi_jpeg_make_start (void);
00060 chunk *gpi_jpeg_make_SOFC (int width, int height,
00061 char vh1, char vh2, char vh3,
00062 char q1, char q2, char q3);
00063 chunk *gpi_jpeg_makeSsSeAhAl (int huffset1, int huffset2, int huffset3);
00064
00065 void gpi_jpeg_print_quantization_table(jpeg_quantization_table *table);
00066 chunk *gpi_jpeg_make_quantization(jpeg_quantization_table *table, char number);
00067 jpeg_quantization_table *gpi_jpeg_quantization2table(chunk *qmarker);
00068
00069 jpeg *gpi_jpeg_header(int width, int height,
00070 char vh1, char vh2, char vh3,
00071 char q1, char q2, char q3,
00072 jpeg_quantization_table *quant1, jpeg_quantization_table *quant2,
00073 char huffset1, char huffset2, char huffset3,
00074 chunk *huff1, chunk *huff2, chunk *huff3, chunk *huff4);
00075
00076 char gpi_jpeg_write(CameraFile *file, const char *name, jpeg *myjpeg);
00077 #endif