Merge pull request #423 from jdgleaver/set-message-ext

[pcsx_rearmed.git] / deps / libchdr / bitstream.h

// license:BSD-3-Clause\r
// copyright-holders:Aaron Giles\r
/***************************************************************************\r
\r
    bitstream.h\r
\r
    Helper classes for reading/writing at the bit level.\r
\r
***************************************************************************/\r
\r
#pragma once\r
\r
#ifndef __BITSTREAM_H__\r
#define __BITSTREAM_H__\r
\r
#include <stdint.h>\r
\r
//**************************************************************************\r
//  TYPE DEFINITIONS\r
//**************************************************************************\r
\r
// helper class for reading from a bit buffer\r
struct bitstream\r
{\r
	uint32_t          buffer;       // current bit accumulator\r
	int               bits;         // number of bits in the accumulator\r
	const uint8_t *   read;         // read pointer\r
	uint32_t          doffset;      // byte offset within the data\r
	uint32_t          dlength;      // length of the data\r
};\r
\r
struct bitstream* 	create_bitstream(const void *src, uint32_t srclength);\r
int 				bitstream_overflow(struct bitstream* bitstream);\r
uint32_t 			bitstream_read_offset(struct bitstream* bitstream);\r
\r
uint32_t 			bitstream_read(struct bitstream* bitstream, int numbits);\r
uint32_t 			bitstream_peek(struct bitstream* bitstream, int numbits);\r
void 				bitstream_remove(struct bitstream* bitstream, int numbits);\r
uint32_t 			bitstream_flush(struct bitstream* bitstream);\r
\r
\r
#endif\r