libgphoto2 photo camera library (libgphoto2) API 2.4.14

- Main Page
- Related Pages
- Data Structures
- Files
- Directories

- File List
- Globals

# jpeg.h

Go to the documentation of this file.

    00001
    00024 #ifndef __GPHOTO2_JPEG_H__
    00025 #define __GPHOTO2_JPEG_H__
    00026
    00027 #include <gphoto2/gphoto2-file.h>
    00028
    00029 typedef enum {
    00030     JPEG_START=0xD8,        JPEG_COMMENT=0xFE,      JPEG_APPO=0xE0,
    00031     JPEG_QUANTIZATION=0xDB, JPEG_HUFFMAN=0xC4,      JPEG_SOFC0=0xC0,
    00032     JPEG_SSSEAHAL=0xDA,     JPEG_EOI=0xD9
    00033 } jpegmarker;
    00034
    00035 typedef struct chunk{
    00036     int size;
    00037     unsigned char *data;
    00038 } chunk;
    00039
    00040 typedef char jpeg_quantization_table[64];
    00041
    00042 typedef struct jpeg {
    00043     int count;
    00044     struct chunk *marker[20]; /* I think this should be big enough */
    00045 }jpeg;
    00046
    00047 chunk *gpi_jpeg_chunk_new(int length);
    00048 chunk *gpi_jpeg_chunk_new_filled(int length, char *data);
    00049 void gpi_jpeg_chunk_destroy(chunk *mychunk);
    00050 void gpi_jpeg_chunk_print(chunk *mychunk);
    00051
    00052 char  gpi_jpeg_findff(int *location, chunk *picture);
    00053 char  gpi_jpeg_findactivemarker(char *id, int *location, chunk *picture);
    00054 char *gpi_jpeg_markername(int c);
    00055
    00056 jpeg *gpi_jpeg_new        (void);
    00057 void  gpi_jpeg_destroy    (jpeg *myjpeg);
    00058 void  gpi_jpeg_add_marker (jpeg *myjpeg, chunk *picture, int start, int end);
    00059 void  gpi_jpeg_add_chunk  (jpeg *myjpeg, chunk *source);
    00060 void  gpi_jpeg_parse      (jpeg *myjpeg, chunk *picture);
    00061 void  gpi_jpeg_print      (jpeg *myjpeg);
    00062
    00063 chunk *gpi_jpeg_make_start   (void);
    00064 chunk *gpi_jpeg_make_SOFC    (int width, int height,
    00065                              char vh1, char vh2, char vh3,
    00066                              char q1, char q2, char q3);
    00067 chunk *gpi_jpeg_makeSsSeAhAl (int huffset1, int huffset2, int huffset3);
    00068
    00069 void gpi_jpeg_print_quantization_table(jpeg_quantization_table *table);
    00070 chunk *gpi_jpeg_make_quantization(jpeg_quantization_table *table, char number);
    00071 jpeg_quantization_table *gpi_jpeg_quantization2table(chunk *qmarker);
    00072
    00073 jpeg *gpi_jpeg_header(int width, int height,
    00074     char vh1, char vh2, char vh3,
    00075     char q1, char q2, char q3,
    00076     jpeg_quantization_table *quant1, jpeg_quantization_table *quant2,
    00077     char huffset1, char huffset2, char huffset3,
    00078     chunk *huff1, chunk *huff2, chunk *huff3, chunk *huff4);
    00079
    00080 char gpi_jpeg_write(CameraFile *file, const char *name, jpeg *myjpeg);
    00081 #endif