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indeo3: Avoid undefined behaviour

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Avoid the clang warning

"warning: shifting a negative signed value is undefined"
This commit is contained in:
Luca Barbato 2016-04-12 22:14:26 +02:00
parent eae2ebded3
commit 6b2ad3ca48
1 changed files with 4 additions and 4 deletions
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8
libavcodec/indeo3data.h
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@ -238,9 +238,9 @@
* according with endianness of the host machine.
*/
#if HAVE_BIGENDIAN
#define PD(a,b) (((a) << 8) + (b))
#define PD(a,b) (((a) * (1 << 8)) + (b))
#else
#define PD(a,b) (((b) << 8) + (a))
#define PD(a,b) (((b) * (1 << 8)) + (a))
#endif
/**
@ -285,9 +285,9 @@ static const int16_t delta_tab_3_5[79] = { TAB_3_5 };
* according with endianness of the host machine.
*/
#if HAVE_BIGENDIAN
#define PD(a,b) (((a) << 24) + ((a) << 16) + ((b) << 8) + (b))
#define PD(a,b) (((a) * (1 << 24)) + ((a) * (1 << 16)) + ((b) * (1 << 8)) + (b))
#else
#define PD(a,b) (((b) << 24) + ((b) << 16) + ((a) << 8) + (a))
#define PD(a,b) (((b) * (1 << 24)) + ((b) * (1 << 16)) + ((a) * (1 << 8)) + (a))
#endif
/*