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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2002 Thomas Vander Stichele <thomas@apestaart.org>
*
* gstutils.h: Header for various utility functions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <glib.h>
G_BEGIN_DECLS
/* Define PUT and GET functions for unaligned memory */
#define _FP_GET(__data, __idx, __size, __shift) \
(((guint##__size) (((const guint8 *) (__data))[__idx])) << (__shift))
#define _FP_PUT(__data, __idx, __size, __shift, __num) \
(((guint8 *) (__data))[__idx] = (((guint##__size) (__num)) >> (__shift)) & 0xff)
#ifndef __GTK_DOC_IGNORE__
/**
* FP_READ_UINT64_BE:
* @data: memory location
*
* Read a 64 bit unsigned integer value in big endian format from the memory buffer.
*/
/**
* FP_READ_UINT64_LE:
* @data: memory location
*
* Read a 64 bit unsigned integer value in little endian format from the memory buffer.
*/
#define _FP_READ_UINT64_BE(data) (_FP_GET (data, 0, 64, 56) | \
_FP_GET (data, 1, 64, 48) | \
_FP_GET (data, 2, 64, 40) | \
_FP_GET (data, 3, 64, 32) | \
_FP_GET (data, 4, 64, 24) | \
_FP_GET (data, 5, 64, 16) | \
_FP_GET (data, 6, 64, 8) | \
_FP_GET (data, 7, 64, 0))
#define _FP_READ_UINT64_LE(data) (_FP_GET (data, 7, 64, 56) | \
_FP_GET (data, 6, 64, 48) | \
_FP_GET (data, 5, 64, 40) | \
_FP_GET (data, 4, 64, 32) | \
_FP_GET (data, 3, 64, 24) | \
_FP_GET (data, 2, 64, 16) | \
_FP_GET (data, 1, 64, 8) | \
_FP_GET (data, 0, 64, 0))
#define FP_READ_UINT64_BE(data) _fpi_slow_read64_be((const guint8 *)(data))
static inline guint64 _fpi_slow_read64_be (const guint8 * data) {
return _FP_READ_UINT64_BE (data);
}
#define FP_READ_UINT64_LE(data) _fpi_slow_read64_le((const guint8 *)(data))
static inline guint64 _fpi_slow_read64_le (const guint8 * data) {
return _FP_READ_UINT64_LE (data);
}
/**
* FP_READ_UINT32_BE:
* @data: memory location
*
* Read a 32 bit unsigned integer value in big endian format from the memory buffer.
*/
/**
* FP_READ_UINT32_LE:
* @data: memory location
*
* Read a 32 bit unsigned integer value in little endian format from the memory buffer.
*/
#define _FP_READ_UINT32_BE(data) (_FP_GET (data, 0, 32, 24) | \
_FP_GET (data, 1, 32, 16) | \
_FP_GET (data, 2, 32, 8) | \
_FP_GET (data, 3, 32, 0))
#define _FP_READ_UINT32_LE(data) (_FP_GET (data, 3, 32, 24) | \
_FP_GET (data, 2, 32, 16) | \
_FP_GET (data, 1, 32, 8) | \
_FP_GET (data, 0, 32, 0))
#define FP_READ_UINT32_BE(data) _fpi_slow_read32_be((const guint8 *)(data))
static inline guint32 _fpi_slow_read32_be (const guint8 * data) {
return _FP_READ_UINT32_BE (data);
}
#define FP_READ_UINT32_LE(data) _fpi_slow_read32_le((const guint8 *)(data))
static inline guint32 _fpi_slow_read32_le (const guint8 * data) {
return _FP_READ_UINT32_LE (data);
}
/**
* FP_READ_UINT24_BE:
* @data: memory location
*
* Read a 24 bit unsigned integer value in big endian format from the memory buffer.
*/
#define _FP_READ_UINT24_BE(data) (_FP_GET (data, 0, 32, 16) | \
_FP_GET (data, 1, 32, 8) | \
_FP_GET (data, 2, 32, 0))
#define FP_READ_UINT24_BE(data) _fpi_slow_read24_be((const guint8 *)(data))
static inline guint32 _fpi_slow_read24_be (const guint8 * data) {
return _FP_READ_UINT24_BE (data);
}
/**
* FP_READ_UINT24_LE:
* @data: memory location
*
* Read a 24 bit unsigned integer value in little endian format from the memory buffer.
*/
#define _FP_READ_UINT24_LE(data) (_FP_GET (data, 2, 32, 16) | \
_FP_GET (data, 1, 32, 8) | \
_FP_GET (data, 0, 32, 0))
#define FP_READ_UINT24_LE(data) _fpi_slow_read24_le((const guint8 *)(data))
static inline guint32 _fpi_slow_read24_le (const guint8 * data) {
return _FP_READ_UINT24_LE (data);
}
/**
* FP_READ_UINT16_BE:
* @data: memory location
*
* Read a 16 bit unsigned integer value in big endian format from the memory buffer.
*/
/**
* FP_READ_UINT16_LE:
* @data: memory location
*
* Read a 16 bit unsigned integer value in little endian format from the memory buffer.
*/
#define _FP_READ_UINT16_BE(data) (_FP_GET (data, 0, 16, 8) | \
_FP_GET (data, 1, 16, 0))
#define _FP_READ_UINT16_LE(data) (_FP_GET (data, 1, 16, 8) | \
_FP_GET (data, 0, 16, 0))
#define FP_READ_UINT16_BE(data) _fpi_slow_read16_be((const guint8 *)(data))
static inline guint16 _fpi_slow_read16_be (const guint8 * data) {
return _FP_READ_UINT16_BE (data);
}
#define FP_READ_UINT16_LE(data) _fpi_slow_read16_le((const guint8 *)(data))
static inline guint16 _fpi_slow_read16_le (const guint8 * data) {
return _FP_READ_UINT16_LE (data);
}
/**
* FP_READ_UINT8:
* @data: memory location
*
* Read an 8 bit unsigned integer value from the memory buffer.
*/
#define FP_READ_UINT8(data) (_FP_GET (data, 0, 8, 0))
/**
* FP_WRITE_UINT64_BE:
* @data: memory location
* @val: value to store
*
* Store a 64 bit unsigned integer value in big endian format into the memory buffer.
*/
/**
* FP_WRITE_UINT64_LE:
* @data: memory location
* @val: value to store
*
* Store a 64 bit unsigned integer value in little endian format into the memory buffer.
*/
#define FP_WRITE_UINT64_BE(data,val) do { \
gpointer __put_data = data; \
guint64 __put_val = val; \
_FP_PUT (__put_data, 0, 64, 56, __put_val); \
_FP_PUT (__put_data, 1, 64, 48, __put_val); \
_FP_PUT (__put_data, 2, 64, 40, __put_val); \
_FP_PUT (__put_data, 3, 64, 32, __put_val); \
_FP_PUT (__put_data, 4, 64, 24, __put_val); \
_FP_PUT (__put_data, 5, 64, 16, __put_val); \
_FP_PUT (__put_data, 6, 64, 8, __put_val); \
_FP_PUT (__put_data, 7, 64, 0, __put_val); \
} while (0)
#define FP_WRITE_UINT64_LE(data,val) do { \
gpointer __put_data = data; \
guint64 __put_val = val; \
_FP_PUT (__put_data, 0, 64, 0, __put_val); \
_FP_PUT (__put_data, 1, 64, 8, __put_val); \
_FP_PUT (__put_data, 2, 64, 16, __put_val); \
_FP_PUT (__put_data, 3, 64, 24, __put_val); \
_FP_PUT (__put_data, 4, 64, 32, __put_val); \
_FP_PUT (__put_data, 5, 64, 40, __put_val); \
_FP_PUT (__put_data, 6, 64, 48, __put_val); \
_FP_PUT (__put_data, 7, 64, 56, __put_val); \
} while (0)
/**
* FP_WRITE_UINT32_BE:
* @data: memory location
* @val: value to store
*
* Store a 32 bit unsigned integer value in big endian format into the memory buffer.
*/
/**
* FP_WRITE_UINT32_LE:
* @data: memory location
* @val: value to store
*
* Store a 32 bit unsigned integer value in little endian format into the memory buffer.
*/
#define FP_WRITE_UINT32_BE(data,val) do { \
gpointer __put_data = data; \
guint32 __put_val = val; \
_FP_PUT (__put_data, 0, 32, 24, __put_val); \
_FP_PUT (__put_data, 1, 32, 16, __put_val); \
_FP_PUT (__put_data, 2, 32, 8, __put_val); \
_FP_PUT (__put_data, 3, 32, 0, __put_val); \
} while (0)
#define FP_WRITE_UINT32_LE(data,val) do { \
gpointer __put_data = data; \
guint32 __put_val = val; \
_FP_PUT (__put_data, 0, 32, 0, __put_val); \
_FP_PUT (__put_data, 1, 32, 8, __put_val); \
_FP_PUT (__put_data, 2, 32, 16, __put_val); \
_FP_PUT (__put_data, 3, 32, 24, __put_val); \
} while (0)
/**
* FP_WRITE_UINT24_BE:
* @data: memory location
* @num: value to store
*
* Store a 24 bit unsigned integer value in big endian format into the memory buffer.
*/
#define FP_WRITE_UINT24_BE(data, num) do { \
gpointer __put_data = data; \
guint32 __put_val = num; \
_FP_PUT (__put_data, 0, 32, 16, __put_val); \
_FP_PUT (__put_data, 1, 32, 8, __put_val); \
_FP_PUT (__put_data, 2, 32, 0, __put_val); \
} while (0)
/**
* FP_WRITE_UINT24_LE:
* @data: memory location
* @num: value to store
*
* Store a 24 bit unsigned integer value in little endian format into the memory buffer.
*/
#define FP_WRITE_UINT24_LE(data, num) do { \
gpointer __put_data = data; \
guint32 __put_val = num; \
_FP_PUT (__put_data, 0, 32, 0, __put_val); \
_FP_PUT (__put_data, 1, 32, 8, __put_val); \
_FP_PUT (__put_data, 2, 32, 16, __put_val); \
} while (0)
/**
* FP_WRITE_UINT16_BE:
* @data: memory location
* @val: value to store
*
* Store a 16 bit unsigned integer value in big endian format into the memory buffer.
*/
/**
* FP_WRITE_UINT16_LE:
* @data: memory location
* @val: value to store
*
* Store a 16 bit unsigned integer value in little endian format into the memory buffer.
*/
#define FP_WRITE_UINT16_BE(data,val) do { \
gpointer __put_data = data; \
guint16 __put_val = val; \
_FP_PUT (__put_data, 0, 16, 8, __put_val); \
_FP_PUT (__put_data, 1, 16, 0, __put_val); \
} while (0)
#define FP_WRITE_UINT16_LE(data,val) do { \
gpointer __put_data = data; \
guint16 __put_val = val; \
_FP_PUT (__put_data, 0, 16, 0, __put_val); \
_FP_PUT (__put_data, 1, 16, 8, __put_val); \
} while (0)
/**
* FP_WRITE_UINT8:
* @data: memory location
* @num: value to store
*
* Store an 8 bit unsigned integer value into the memory buffer.
*/
#define FP_WRITE_UINT8(data, num) do { \
_FP_PUT (data, 0, 8, 0, num); \
} while (0)
/* Float endianness conversion macros */
/**
* FP_READ_FLOAT_LE:
* @data: memory location
*
* Read a 32 bit float value in little endian format from the memory buffer.
*
* Returns: The floating point value read from @data
*/
static inline gfloat
FP_READ_FLOAT_LE(const guint8 *data)
{
union
{
guint32 i;
gfloat f;
} u;
u.i = FP_READ_UINT32_LE (data);
return u.f;
}
/**
* FP_READ_FLOAT_BE:
* @data: memory location
*
* Read a 32 bit float value in big endian format from the memory buffer.
*
* Returns: The floating point value read from @data
*/
static inline gfloat
FP_READ_FLOAT_BE(const guint8 *data)
{
union
{
guint32 i;
gfloat f;
} u;
u.i = FP_READ_UINT32_BE (data);
return u.f;
}
/**
* FP_READ_DOUBLE_LE:
* @data: memory location
*
* Read a 64 bit double value in little endian format from the memory buffer.
*
* Returns: The double-precision floating point value read from @data
*/
static inline gdouble
FP_READ_DOUBLE_LE(const guint8 *data)
{
union
{
guint64 i;
gdouble d;
} u;
u.i = FP_READ_UINT64_LE (data);
return u.d;
}
/**
* FP_READ_DOUBLE_BE:
* @data: memory location
*
* Read a 64 bit double value in big endian format from the memory buffer.
*
* Returns: The double-precision floating point value read from @data
*/
static inline gdouble
FP_READ_DOUBLE_BE(const guint8 *data)
{
union
{
guint64 i;
gdouble d;
} u;
u.i = FP_READ_UINT64_BE (data);
return u.d;
}
/**
* FP_WRITE_FLOAT_LE:
* @data: memory location
* @num: value to store
*
* Store a 32 bit float value in little endian format into the memory buffer.
*/
static inline void
FP_WRITE_FLOAT_LE(guint8 *data, gfloat num)
{
union
{
guint32 i;
gfloat f;
} u;
u.f = num;
FP_WRITE_UINT32_LE (data, u.i);
}
/**
* FP_WRITE_FLOAT_BE:
* @data: memory location
* @num: value to store
*
* Store a 32 bit float value in big endian format into the memory buffer.
*/
static inline void
FP_WRITE_FLOAT_BE(guint8 *data, gfloat num)
{
union
{
guint32 i;
gfloat f;
} u;
u.f = num;
FP_WRITE_UINT32_BE (data, u.i);
}
/**
* FP_WRITE_DOUBLE_LE:
* @data: memory location
* @num: value to store
*
* Store a 64 bit double value in little endian format into the memory buffer.
*/
static inline void
FP_WRITE_DOUBLE_LE(guint8 *data, gdouble num)
{
union
{
guint64 i;
gdouble d;
} u;
u.d = num;
FP_WRITE_UINT64_LE (data, u.i);
}
/**
* FP_WRITE_DOUBLE_BE:
* @data: memory location
* @num: value to store
*
* Store a 64 bit double value in big endian format into the memory buffer.
*/
static inline void
FP_WRITE_DOUBLE_BE(guint8 *data, gdouble num)
{
union
{
guint64 i;
gdouble d;
} u;
u.d = num;
FP_WRITE_UINT64_BE (data, u.i);
}
G_END_DECLS
#endif /* __GTK_DOC_IGNORE__ */
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