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add little endian 24bit read/write
author
Alex Beregszaszi
<alex@rtfs.hu>
Tue, 6 Mar 2007 13:04:47 +0000
(13:04 +0000)
committer
Alex Beregszaszi
<alex@rtfs.hu>
Tue, 6 Mar 2007 13:04:47 +0000
(13:04 +0000)
Originally committed as revision 8269 to svn://svn.ffmpeg.org/ffmpeg/trunk
libavutil/intreadwrite.h
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diff --git
a/libavutil/intreadwrite.h
b/libavutil/intreadwrite.h
index
09144f2
..
7225f0b
100644
(file)
--- a/
libavutil/intreadwrite.h
+++ b/
libavutil/intreadwrite.h
@@
-78,6
+78,14
@@
struct unaligned_16 { uint16_t l; } __attribute__((packed));
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; }
+#define AV_RL24(x) ((((uint8_t*)(x))[2] << 16) | \
+ (((uint8_t*)(x))[1] << 8) | \
+ ((uint8_t*)(x))[0])
+#define AV_WL24(p, d) { \
+ ((uint8_t*)(p))[0] = (d); \
+ ((uint8_t*)(p))[1] = (d)>>8; \
+ ((uint8_t*)(p))[2] = (d)>>16; }
+
#define AV_RL32(x) ((((uint8_t*)(x))[3] << 24) | \
(((uint8_t*)(x))[2] << 16) | \
(((uint8_t*)(x))[1] << 8) | \