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API: Move float endianness conversion macros from libgstfloatcast to core as it's useful in general, even in core. Fi...

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Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstutils.h:
API: Move float endianness conversion macros from libgstfloatcast
to core as it's useful in general, even in core. Fixes bug #555196.
This adds GDOUBLE_FROM_BE, GDOUBLE_FROM_LE, GDOUBLE_TO_BE,
GDOUBLE_TO_LE, GDOUBLE_SWAP_LE_BE, GFLOAT_FROM_BE, GFLOAT_FROM_LE,
GFLOAT_TO_BE, GFLOAT_TO_LE, GFLOAT_SWAP_LE_BE.
Also add GST_READ_ and GST_WRITE_ macros for floats and doubles:
GST_READ_FLOAT_LE, GST_READ_FLOAT_BE, GST_READ_DOUBLE_LE,
GST_READ_DOUBLE_BE, GST_WRITE_FLOAT_LE, GST_WRITE_FLOAT_BE,
GST_WRITE_DOUBLE_LE, GST_WRITE_DOUBLE_BE.
This commit is contained in:
Sebastian Dröge 2008-10-23 07:09:21 +00:00
parent 61ee0f414a
commit 5644be89d7
3 changed files with 368 additions and 0 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2008-10-23 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* docs/gst/gstreamer-sections.txt:
* gst/gstutils.h:
API: Move float endianness conversion macros from libgstfloatcast
to core as it's useful in general, even in core. Fixes bug #555196.
This adds GDOUBLE_FROM_BE, GDOUBLE_FROM_LE, GDOUBLE_TO_BE,
GDOUBLE_TO_LE, GDOUBLE_SWAP_LE_BE, GFLOAT_FROM_BE, GFLOAT_FROM_LE,
GFLOAT_TO_BE, GFLOAT_TO_LE, GFLOAT_SWAP_LE_BE.
Also add GST_READ_ and GST_WRITE_ macros for floats and doubles:
GST_READ_FLOAT_LE, GST_READ_FLOAT_BE, GST_READ_DOUBLE_LE,
GST_READ_DOUBLE_BE, GST_WRITE_FLOAT_LE, GST_WRITE_FLOAT_BE,
GST_WRITE_DOUBLE_LE, GST_WRITE_DOUBLE_BE.
2008-10-22 Sebastian Dröge <slomo@circular-chaos.org>
* docs/libs/gstreamer-libs-sections.txt:

18
docs/gst/gstreamer-sections.txt
View file

@ -2273,6 +2273,16 @@ GST_BOILERPLATE_FULL
GST_BOILERPLATE
GST_CALL_PARENT
GST_CALL_PARENT_WITH_DEFAULT
GDOUBLE_FROM_BE
GDOUBLE_FROM_LE
GDOUBLE_TO_BE
GDOUBLE_TO_LE
GDOUBLE_SWAP_LE_BE
GFLOAT_FROM_BE
GFLOAT_FROM_LE
GFLOAT_TO_BE
GFLOAT_TO_LE
GFLOAT_SWAP_LE_BE
GST_READ_UINT8
GST_READ_UINT16_LE
GST_READ_UINT16_BE
@ -2282,6 +2292,10 @@ GST_READ_UINT32_LE
GST_READ_UINT32_BE
GST_READ_UINT64_LE
GST_READ_UINT64_BE
GST_READ_FLOAT_LE
GST_READ_FLOAT_BE
GST_READ_DOUBLE_LE
GST_READ_DOUBLE_BE
GST_WRITE_UINT8
GST_WRITE_UINT16_LE
GST_WRITE_UINT16_BE
@ -2291,6 +2305,10 @@ GST_WRITE_UINT32_LE
GST_WRITE_UINT32_BE
GST_WRITE_UINT64_LE
GST_WRITE_UINT64_BE
GST_WRITE_FLOAT_LE
GST_WRITE_FLOAT_BE
GST_WRITE_DOUBLE_LE
GST_WRITE_DOUBLE_BE
GST_ROUND_UP_2
GST_ROUND_UP_4
GST_ROUND_UP_8

335
gst/gstutils.h
View file

@ -510,6 +510,341 @@ GST_BOILERPLATE_FULL (type, type_as_function, parent_type, \
_GST_PUT (data, 0, 8, 0, num); \
} while (0)
/* Float endianess conversion macros */
/* FIXME: Remove this once we depend on a GLib version with this */
#ifndef GFLOAT_FROM_LE
/**
* GFLOAT_SWAP_LE_BE:
* @in: input value
*
* Swap byte order of a 32-bit floating point value (float).
*
* Since: 0.10.22
*
*/
inline static gfloat
GFLOAT_SWAP_LE_BE(gfloat in)
{
union
{
guint32 i;
gfloat f;
} u;
u.f = in;
u.i = GUINT32_SWAP_LE_BE (u.i);
return u.f;
}
/**
* GDOUBLE_SWAP_LE_BE:
* @in: input value
*
* Swap byte order of a 64-bit floating point value (double).
*
* Since: 0.10.22
*
*/
inline static gdouble
GDOUBLE_SWAP_LE_BE(gdouble in)
{
union
{
guint64 i;
gdouble d;
} u;
u.d = in;
u.i = GUINT64_SWAP_LE_BE (u.i);
return u.d;
}
/**
* GDOUBLE_TO_LE:
* @val: value
*
* Convert 64-bit floating point value (double) from native byte order into
* little endian byte order.
*
* Since: 0.10.22
*
*/
/**
* GDOUBLE_TO_BE:
* @val: value
*
* Convert 64-bit floating point value (double) from native byte order into
* big endian byte order.
*
* Since: 0.10.22
*
*/
/**
* GDOUBLE_FROM_LE:
* @val: value
*
* Convert 64-bit floating point value (double) from little endian byte order
* into native byte order.
*
* Since: 0.10.22
*
*/
/**
* GDOUBLE_FROM_BE:
* @val: value
*
* Convert 64-bit floating point value (double) from big endian byte order
* into native byte order.
*
* Since: 0.10.22
*
*/
/**
* GFLOAT_TO_LE:
* @val: value
*
* Convert 32-bit floating point value (float) from native byte order into
* little endian byte order.
*
* Since: 0.10.22
*
*/
/**
* GFLOAT_TO_BE:
* @val: value
*
* Convert 32-bit floating point value (float) from native byte order into
* big endian byte order.
*
* Since: 0.10.22
*
*/
/**
* GFLOAT_FROM_LE:
* @val: value
*
* Convert 32-bit floating point value (float) from little endian byte order
* into native byte order.
*
* Since: 0.10.22
*
*/
/**
* GFLOAT_FROM_BE:
* @val: value
*
* Convert 32-bit floating point value (float) from big endian byte order
* into native byte order.
*
* Since: 0.10.22
*
*/
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define GFLOAT_TO_LE(val) ((gfloat) (val))
#define GFLOAT_TO_BE(val) (GFLOAT_SWAP_LE_BE (val))
#define GDOUBLE_TO_LE(val) ((gdouble) (val))
#define GDOUBLE_TO_BE(val) (GDOUBLE_SWAP_LE_BE (val))
#elif G_BYTE_ORDER == G_BIG_ENDIAN
#define GFLOAT_TO_LE(val) (GFLOAT_SWAP_LE_BE (val))
#define GFLOAT_TO_BE(val) ((gfloat) (val))
#define GDOUBLE_TO_LE(val) (GDOUBLE_SWAP_LE_BE (val))
#define GDOUBLE_TO_BE(val) ((gdouble) (val))
#else /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
#error unknown ENDIAN type
#endif /* !G_LITTLE_ENDIAN && !G_BIG_ENDIAN */
#define GFLOAT_FROM_LE(val) (GFLOAT_TO_LE (val))
#define GFLOAT_FROM_BE(val) (GFLOAT_TO_BE (val))
#define GDOUBLE_FROM_LE(val) (GDOUBLE_TO_LE (val))
#define GDOUBLE_FROM_BE(val) (GDOUBLE_TO_BE (val))
#endif /* !defined(GFLOAT_FROM_LE) */
/**
* GST_READ_FLOAT_LE:
* @data: memory location
*
* Read a 32 bit float value in little endian format from the memory buffer.
*
* Since: 0.10.22
*
*/
inline static gfloat
GST_READ_FLOAT_LE(const guint8 *data)
{
union
{
guint32 i;
gfloat f;
} u;
u.i = GST_READ_UINT32_LE (data);
return u.f;
}
/**
* GST_READ_FLOAT_BE:
* @data: memory location
*
* Read a 32 bit float value in big endian format from the memory buffer.
*
* Since: 0.10.22
*
*/
inline static gfloat
GST_READ_FLOAT_BE(const guint8 *data)
{
union
{
guint32 i;
gfloat f;
} u;
u.i = GST_READ_UINT32_BE (data);
return u.f;
}
/**
* GST_READ_DOUBLE_LE:
* @data: memory location
*
* Read a 64 bit double value in little endian format from the memory buffer.
*
* Since: 0.10.22
*
*/
inline static gdouble
GST_READ_DOUBLE_LE(const guint8 *data)
{
union
{
guint64 i;
gdouble d;
} u;
u.i = GST_READ_UINT64_LE (data);
return u.d;
}
/**
* GST_READ_DOUBLE_BE:
* @data: memory location
*
* Read a 64 bit double value in big endian format from the memory buffer.
*
* Since: 0.10.22
*
*/
inline static gdouble
GST_READ_DOUBLE_BE(const guint8 *data)
{
union
{
guint64 i;
gdouble d;
} u;
u.i = GST_READ_UINT64_BE (data);
return u.d;
}
/**
* GST_WRITE_FLOAT_LE:
* @data: memory location
* @num: value to store
*
* Store a 32 bit float value in little endian format into the memory buffer.
*
* Since: 0.10.22
*
*/
inline static void
GST_WRITE_FLOAT_LE(guint8 *data, gfloat num)
{
union
{
guint32 i;
gfloat f;
} u;
u.f = num;
GST_WRITE_UINT32_LE (data, u.i);
}
/**
* GST_WRITE_FLOAT_BE:
* @data: memory location
* @num: value to store
*
* Store a 32 bit float value in big endian format into the memory buffer.
*
* Since: 0.10.22
*
*/
inline static void
GST_WRITE_FLOAT_BE(guint8 *data, gfloat num)
{
union
{
guint32 i;
gfloat f;
} u;
u.f = num;
GST_WRITE_UINT32_BE (data, u.i);
}
/**
* GST_WRITE_DOUBLE_LE:
* @data: memory location
* @num: value to store
*
* Store a 64 bit double value in little endian format into the memory buffer.
*
* Since: 0.10.22
*
*/
inline static void
GST_WRITE_DOUBLE_LE(guint8 *data, gdouble num)
{
union
{
guint64 i;
gdouble d;
} u;
u.d = num;
GST_WRITE_UINT64_LE (data, u.i);
}
/**
* GST_WRITE_DOUBLE_BE:
* @data: memory location
* @num: value to store
*
* Store a 64 bit double value in big endian format into the memory buffer.
*
* Since: 0.10.22
*
*/
inline static void
GST_WRITE_DOUBLE_BE(guint8 *data, gdouble num)
{
union
{
guint64 i;
gdouble d;
} u;
u.d = num;
GST_WRITE_UINT64_BE (data, u.i);
}
/* Miscellaneous utility macros */
/**