libgphoto2 photo camera library (libgphoto2) API: libgphoto2/jpeg.h Source File

libgphoto2 photo camera library (libgphoto2) API 2.5.34

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jpeg.h
Go to the documentation of this file.
1
23
24#ifndef LIBGPHOTO2_JPEG_H
25#define LIBGPHOTO2_JPEG_H
26
27#include <gphoto2/gphoto2-file.h>
28
29typedef enum {
30 JPEG_START=0xD8, JPEG_COMMENT=0xFE, JPEG_APPO=0xE0,
31 JPEG_QUANTIZATION=0xDB, JPEG_HUFFMAN=0xC4, JPEG_SOFC0=0xC0,
32 JPEG_SSSEAHAL=0xDA, JPEG_EOI=0xD9
33} jpegmarker;
34
35 typedef struct chunk{
36 int size;
37 unsigned char *data;
38} chunk;
39
40typedef char jpeg_quantization_table[64];
41
42 typedef struct jpeg {
43 int count;
44 struct chunk *marker[20]; /* I think this should be big enough */
45}jpeg;
46
47 chunk *gpi_jpeg_chunk_new(int length);
48 chunk *gpi_jpeg_chunk_new_filled(int length, char *data);
49void gpi_jpeg_chunk_destroy(chunk *mychunk);
50void gpi_jpeg_chunk_print(chunk *mychunk);
51
52char gpi_jpeg_findff(int *location, chunk *picture);
53char gpi_jpeg_findactivemarker(char *id, int *location, chunk *picture);
54char *gpi_jpeg_markername(unsigned int c);
55
56 jpeg *gpi_jpeg_new (void);
57void gpi_jpeg_destroy (jpeg *myjpeg);
58void gpi_jpeg_add_marker (jpeg *myjpeg, chunk *picture, int start, int end);
59void gpi_jpeg_add_chunk (jpeg *myjpeg, chunk *source);
60void gpi_jpeg_parse (jpeg *myjpeg, chunk *picture);
61void gpi_jpeg_print (jpeg *myjpeg);
62
63 chunk *gpi_jpeg_make_start (void);
64 chunk *gpi_jpeg_make_SOFC (int width, int height,
65 char vh1, char vh2, char vh3,
66 char q1, char q2, char q3);
67 chunk *gpi_jpeg_makeSsSeAhAl (int huffset1, int huffset2, int huffset3);
68
69void gpi_jpeg_print_quantization_table(jpeg_quantization_table *table);
70 chunk *gpi_jpeg_make_quantization(const jpeg_quantization_table * table, char number);
71jpeg_quantization_table *gpi_jpeg_quantization2table(chunk *qmarker);
72
73 jpeg *gpi_jpeg_header(int width, int height,
74 char vh1, char vh2, char vh3,
75 char q1, char q2, char q3,
76 const jpeg_quantization_table *quant1, const jpeg_quantization_table *quant2,
77 char huffset1, char huffset2, char huffset3,
78 chunk *huff1, chunk *huff2, chunk *huff3, chunk *huff4);
79
80char gpi_jpeg_write(CameraFile *file, const char *name, jpeg *myjpeg);
81
82#endif /* !defined(LIBGPHOTO2_JPEG_H) */
gphoto2-file.h
Abstracted gphoto2 file operations.
CameraFile
File structure.
chunk
Definition jpeg.h:35
jpeg
Definition jpeg.h:42