1 #ifndef DECOMPRESS_GENERIC_H 2 #define DECOMPRESS_GENERIC_H 3 4 typedef int (*decompress_fn) (unsigned char *inbuf, int len, 5 int(*fill)(void*, unsigned int), 6 int(*flush)(void*, unsigned int), 7 unsigned char *outbuf, 8 int *posp, 9 void(*error)(char *x)); 10 11 /* inbuf - input buffer 12 *len - len of pre-read data in inbuf 13 *fill - function to fill inbuf when empty 14 *flush - function to write out outbuf 15 *outbuf - output buffer 16 *posp - if non-null, input position (number of bytes read) will be 17 * returned here 18 * 19 *If len != 0, inbuf should contain all the necessary input data, and fill 20 *should be NULL 21 *If len = 0, inbuf can be NULL, in which case the decompressor will allocate 22 *the input buffer. If inbuf != NULL it must be at least XXX_IOBUF_SIZE bytes. 23 *fill will be called (repeatedly...) to read data, at most XXX_IOBUF_SIZE 24 *bytes should be read per call. Replace XXX with the appropriate decompressor 25 *name, i.e. LZMA_IOBUF_SIZE. 26 * 27 *If flush = NULL, outbuf must be large enough to buffer all the expected 28 *output. If flush != NULL, the output buffer will be allocated by the 29 *decompressor (outbuf = NULL), and the flush function will be called to 30 *flush the output buffer at the appropriate time (decompressor and stream 31 *dependent). 32 */ 33 34 35 /* Utility routine to detect the decompression method */ 36 decompress_fn decompress_method(const unsigned char *inbuf, int len, 37 const char **name); 38 39 #endif 40