jpconv.h

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00001 
00009 #ifndef __JPCONV_H__
00010 #define __JPCONV_H__
00011 
00012 #define QTAB_DIV_3   0
00013 #define QTAB_DIV_2   1
00014 #define QTAB_STD     2
00015 #define QTAB_MUL_2   3
00016 
00017 
00018 /* OCamera-conform defines */
00019 #define QTAB_QUALITY_EXCELLENT  QTAB_DIV_3 
00020 #define QTAB_QUALITY_GOOD       QTAB_DIV_2 
00021 #define QTAB_QUALITY_MEDIUM     QTAB_STD 
00022 #define QTAB_QUALITY_LOW        QTAB_MUL_2 
00023 
00024 /* define default behaviour */
00025 #define BYTESTUFF_EANBLE  false
00026 #define COLOR_ENABLE      false
00027 
00028 
00030 typedef struct jpeg_dma_buffer {
00031   unsigned char* mem_ptr;       
00032   unsigned char* jpeg_start;    
00033   unsigned char* jpeg_data;     
00034   unsigned long header_len;     
00035   unsigned long data_len;       
00036 } jpeg_dma_buffer_type;
00037 
00038 
00046 extern int create_jpeg_header(unsigned char *hdr, int width, int height, int qtab_sel);
00047 
00055 extern int create_jpeg_header_ycbcr(unsigned char *hdr, int width, int height, int qtab_sel);
00056 
00068 extern int write_jpeg_file(unsigned char *img, int size, 
00069        char *filename, int width, int height, int qtab_sel, bool color = COLOR_ENABLE, bool  hw_bytestuff_en = BYTESTUFF_EANBLE);
00070 
00083 extern int convert_to_jpeg(unsigned char *img, int size,             /* JPEG data from HW coder */
00084                            unsigned char **jpeg_buf, int *jpeg_size, /* out buffer for JPEG std format, will be allocated */
00085                            int width, int height, int qtab_sel,      /* image information */
00086                            bool hw_bytestuff_en = BYTESTUFF_EANBLE,  /* enable hardware bytestuffing */
00087                            bool color = COLOR_ENABLE);                /* true for color image */
00088 
00102 extern int create_jpeg_dma_buffer(jpeg_dma_buffer_type *jpeg_buffer, int width, int height, int qtab_sel, bool color);
00103 
00111 extern int update_jpeg_header(jpeg_dma_buffer_type *jpeg_buffer, int width, int height);
00112 
00113 
00114 #endif // __JPCONV_H__

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