ref: b30da997ca1ba6d69815bd0ff06f15ecb03a5a6e
dir: /src/picture.h/
#ifndef __PICTURE_H #define __PICTURE_H #include <ogg/ogg.h> typedef enum{ PIC_FORMAT_JPEG, PIC_FORMAT_PNG, PIC_FORMAT_GIF }picture_format; #define BASE64_LENGTH(len) (((len)+2)/3*4) /*Utility function for base64 encoding METADATA_BLOCK_PICTURE tags. Stores BASE64_LENGTH(len)+1 bytes in dst (including a terminating NUL).*/ void base64_encode(char *dst, const char *src, int len); int oi_strncasecmp(const char *a, const char *b, int n); int is_jpeg(const unsigned char *buf, size_t length); int is_png(const unsigned char *buf, size_t length); int is_gif(const unsigned char *buf, size_t length); void extract_png_params(const unsigned char *data, size_t data_length, ogg_uint32_t *width, ogg_uint32_t *height, ogg_uint32_t *depth, ogg_uint32_t *colors, int *has_palette); void extract_gif_params(const unsigned char *data, size_t data_length, ogg_uint32_t *width, ogg_uint32_t *height, ogg_uint32_t *depth, ogg_uint32_t *colors, int *has_palette); void extract_jpeg_params(const unsigned char *data, size_t data_length, ogg_uint32_t *width, ogg_uint32_t *height, ogg_uint32_t *depth, ogg_uint32_t *colors, int *has_palette); char *parse_picture_specification(const char *spec, const char **error_message, int *seen_file_icons); #define WRITE_U32_BE(buf, val) \ do{ \ (buf)[0]=(unsigned char)((val)>>24); \ (buf)[1]=(unsigned char)((val)>>16); \ (buf)[2]=(unsigned char)((val)>>8); \ (buf)[3]=(unsigned char)(val); \ } \ while(0); #endif /* __PICTURE_H */