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utils: make sure slow GST_READ_UINT* variants don't have unexpected side effects

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Fixes unit test on systems where unaligned memory access is not possible.

https://bugzilla.gnome.org/show_bug.cgi?id=695599
This commit is contained in:
Tim-Philipp Müller 2013-03-12 13:53:57 +00:00
parent 9baef63f5b
commit 1750620752
1 changed files with 45 additions and 8 deletions

53
gst/gstutils.h
View file

@ -158,7 +158,7 @@ static inline guint64 __gst_fast_read_swap64(const guint8 *v) {
# define GST_READ_UINT64_LE(data) _GST_FAST_READ (64, data)
# endif
#else
# define GST_READ_UINT64_BE(data) (_GST_GET (data, 0, 64, 56) | \
#define _GST_READ_UINT64_BE(data) (_GST_GET (data, 0, 64, 56) | \
_GST_GET (data, 1, 64, 48) | \
_GST_GET (data, 2, 64, 40) | \
_GST_GET (data, 3, 64, 32) | \
@ -167,7 +167,7 @@ static inline guint64 __gst_fast_read_swap64(const guint8 *v) {
_GST_GET (data, 6, 64, 8) | \
_GST_GET (data, 7, 64, 0))
# define GST_READ_UINT64_LE(data) (_GST_GET (data, 7, 64, 56) | \
#define _GST_READ_UINT64_LE(data) (_GST_GET (data, 7, 64, 56) | \
_GST_GET (data, 6, 64, 48) | \
_GST_GET (data, 5, 64, 40) | \
_GST_GET (data, 4, 64, 32) | \
@ -175,6 +175,15 @@ static inline guint64 __gst_fast_read_swap64(const guint8 *v) {
_GST_GET (data, 2, 64, 16) | \
_GST_GET (data, 1, 64, 8) | \
_GST_GET (data, 0, 64, 0))
#define GST_READ_UINT64_BE(data) __gst_slow_read64_be((const guint8 *)(data))
static inline guint64 __gst_slow_read64_be (const guint8 * data) {
return _GST_READ_UINT64_BE (data);
}
#define GST_READ_UINT64_LE(data) __gst_slow_read64_le((const guint8 *)(data))
static inline guint64 __gst_slow_read64_le (const guint8 * data) {
return _GST_READ_UINT64_LE (data);
}
#endif
/**
@ -199,15 +208,24 @@ static inline guint64 __gst_fast_read_swap64(const guint8 *v) {
# define GST_READ_UINT32_LE(data) _GST_FAST_READ (32, data)
# endif
#else
# define GST_READ_UINT32_BE(data) (_GST_GET (data, 0, 32, 24) | \
#define _GST_READ_UINT32_BE(data) (_GST_GET (data, 0, 32, 24) | \
_GST_GET (data, 1, 32, 16) | \
_GST_GET (data, 2, 32, 8) | \
_GST_GET (data, 3, 32, 0))
# define GST_READ_UINT32_LE(data) (_GST_GET (data, 3, 32, 24) | \
#define _GST_READ_UINT32_LE(data) (_GST_GET (data, 3, 32, 24) | \
_GST_GET (data, 2, 32, 16) | \
_GST_GET (data, 1, 32, 8) | \
_GST_GET (data, 0, 32, 0))
#define GST_READ_UINT32_BE(data) __gst_slow_read32_be((const guint8 *)(data))
static inline guint32 __gst_slow_read32_be (const guint8 * data) {
return _GST_READ_UINT32_BE (data);
}
#define GST_READ_UINT32_LE(data) __gst_slow_read32_le((const guint8 *)(data))
static inline guint32 __gst_slow_read32_le (const guint8 * data) {
return _GST_READ_UINT32_LE (data);
}
#endif
/**
@ -216,20 +234,30 @@ static inline guint64 __gst_fast_read_swap64(const guint8 *v) {
*
* Read a 24 bit unsigned integer value in big endian format from the memory buffer.
*/
#define GST_READ_UINT24_BE(data) (_GST_GET (data, 0, 32, 16) | \
#define _GST_READ_UINT24_BE(data) (_GST_GET (data, 0, 32, 16) | \
_GST_GET (data, 1, 32, 8) | \
_GST_GET (data, 2, 32, 0))
#define GST_READ_UINT24_BE(data) __gst_slow_read24_be((const guint8 *)(data))
static inline guint32 __gst_slow_read24_be (const guint8 * data) {
return _GST_READ_UINT24_BE (data);
}
/**
* GST_READ_UINT24_LE:
* @data: memory location
*
* Read a 24 bit unsigned integer value in little endian format from the memory buffer.
*/
#define GST_READ_UINT24_LE(data) (_GST_GET (data, 2, 32, 16) | \
#define _GST_READ_UINT24_LE(data) (_GST_GET (data, 2, 32, 16) | \
_GST_GET (data, 1, 32, 8) | \
_GST_GET (data, 0, 32, 0))
#define GST_READ_UINT24_LE(data) __gst_slow_read24_le((const guint8 *)(data))
static inline guint32 __gst_slow_read24_le (const guint8 * data) {
return _GST_READ_UINT24_LE (data);
}
/**
* GST_READ_UINT16_BE:
* @data: memory location
@ -251,11 +279,20 @@ static inline guint64 __gst_fast_read_swap64(const guint8 *v) {
# define GST_READ_UINT16_LE(data) _GST_FAST_READ (16, data)
# endif
#else
# define GST_READ_UINT16_BE(data) (_GST_GET (data, 0, 16, 8) | \
#define _GST_READ_UINT16_BE(data) (_GST_GET (data, 0, 16, 8) | \
_GST_GET (data, 1, 16, 0))
# define GST_READ_UINT16_LE(data) (_GST_GET (data, 1, 16, 8) | \
#define _GST_READ_UINT16_LE(data) (_GST_GET (data, 1, 16, 8) | \
_GST_GET (data, 0, 16, 0))
#define GST_READ_UINT16_BE(data) __gst_slow_read16_be((const guint8 *)(data))
static inline guint16 __gst_slow_read16_be (const guint8 * data) {
return _GST_READ_UINT16_BE (data);
}
#define GST_READ_UINT16_LE(data) __gst_slow_read16_le((const guint8 *)(data))
static inline guint16 __gst_slow_read16_le (const guint8 * data) {
return _GST_READ_UINT16_LE (data);
}
#endif
/**