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Add a macro to pack 4 bytes into native byte-order so they can be written at once using a single 32-bit store.
Originally committed as revision 23715 to svn://svn.ffmpeg.org/ffmpeg/trunk
Ronald S. Bultje authored on 2010/06/23 04:15:27Showing 1 changed files
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@@ -146,5 +146,13 @@ if ((y) < (x)) {\
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# define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s))) |
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#endif |
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+#ifndef PACK4x8 |
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+# if HAVE_BIGENDIAN |
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+# define PACK4x8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d)) |
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+# else |
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+# define PACK4x8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a)) |
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+# endif |
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+#endif |
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+ |
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#endif /* AVCODEC_MATHOPS_H */ |
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