From 63826ceb3224ccb70b7bbabee300e6fba9a040fe Mon Sep 17 00:00:00 2001 From: =?utf8?q?M=C3=A5ns=20Rullg=C3=A5rd?= Date: Sun, 16 Aug 2009 15:51:55 +0000 Subject: [PATCH] intreadwrite: ensure arch-specific versions are always used if defined The per-arch headers can define any combination of B/L/N variants. This ensures that whatever is defined in an arch header gets used for all equivalents not defined there. E.g. on a little-endian machine, AV_RN and AV_RL should give the same code. Originally committed as revision 19658 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavutil/intreadwrite.h | 122 +++++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 114 insertions(+), 8 deletions(-) diff --git a/libavutil/intreadwrite.h b/libavutil/intreadwrite.h index 3d52ab8..540a4ff 100644 --- a/libavutil/intreadwrite.h +++ b/libavutil/intreadwrite.h @@ -38,6 +38,112 @@ #endif /* + * Map AV_RNXX <-> AV_R[BL]XX for all variants provided by per-arch headers. + */ + +#if HAVE_BIGENDIAN + +# if defined(AV_RN16) && !defined(AV_RB16) +# define AV_RB16(p) AV_RN16(p) +# elif !defined(AV_RN16) && defined(AV_RB16) +# define AV_RN16(p) AV_RB16(p) +# endif + +# if defined(AV_WN16) && !defined(AV_WB16) +# define AV_WB16(p, v) AV_WN16(p, v) +# elif !defined(AV_WN16) && defined(AV_WB16) +# define AV_WN16(p, v) AV_WB16(p, v) +# endif + +# if defined(AV_RN32) && !defined(AV_RB32) +# define AV_RB32(p) AV_RN32(p) +# elif !defined(AV_RN32) && defined(AV_RB32) +# define AV_RN32(p) AV_RB32(p) +# endif + +# if defined(AV_RN24) && !defined(AV_RB24) +# define AV_RB24(p) AV_RN24(p) +# elif !defined(AV_RN24) && defined(AV_RB24) +# define AV_RN24(p) AV_RB24(p) +# endif + +# if defined(AV_WN24) && !defined(AV_WB24) +# define AV_WB24(p, v) AV_WN24(p, v) +# elif !defined(AV_WN24) && defined(AV_WB24) +# define AV_WN24(p, v) AV_WB24(p, v) +# endif + +# if defined(AV_WN32) && !defined(AV_WB32) +# define AV_WB32(p, v) AV_WN32(p, v) +# elif !defined(AV_WN32) && defined(AV_WB32) +# define AV_WN32(p, v) AV_WB32(p, v) +# endif + +# if defined(AV_RN64) && !defined(AV_RB64) +# define AV_RB64(p) AV_RN64(p) +# elif !defined(AV_RN64) && defined(AV_RB64) +# define AV_RN64(p) AV_RB64(p) +# endif + +# if defined(AV_WN64) && !defined(AV_WB64) +# define AV_WB64(p, v) AV_WN64(p, v) +# elif !defined(AV_WN64) && defined(AV_WB64) +# define AV_WN64(p, v) AV_WB64(p, v) +# endif + +#else /* HAVE_BIGENDIAN */ + +# if defined(AV_RN16) && !defined(AV_RL16) +# define AV_RL16(p) AV_RN16(p) +# elif !defined(AV_RN16) && defined(AV_RL16) +# define AV_RN16(p) AV_RL16(p) +# endif + +# if defined(AV_WN16) && !defined(AV_WL16) +# define AV_WL16(p, v) AV_WN16(p, v) +# elif !defined(AV_WN16) && defined(AV_WL16) +# define AV_WN16(p, v) AV_WL16(p, v) +# endif + +# if defined(AV_RN32) && !defined(AV_RL32) +# define AV_RL32(p) AV_RN32(p) +# elif !defined(AV_RN32) && defined(AV_RL32) +# define AV_RN32(p) AV_RL32(p) +# endif + +# if defined(AV_RN24) && !defined(AV_RL24) +# define AV_RL24(p) AV_RN24(p) +# elif !defined(AV_RN24) && defined(AV_RL24) +# define AV_RN24(p) AV_RL24(p) +# endif + +# if defined(AV_WN24) && !defined(AV_WL24) +# define AV_WL24(p, v) AV_WN24(p, v) +# elif !defined(AV_WN24) && defined(AV_WL24) +# define AV_WN24(p, v) AV_WL24(p, v) +# endif + +# if defined(AV_WN32) && !defined(AV_WL32) +# define AV_WL32(p, v) AV_WN32(p, v) +# elif !defined(AV_WN32) && defined(AV_WL32) +# define AV_WN32(p, v) AV_WL32(p, v) +# endif + +# if defined(AV_RN64) && !defined(AV_RL64) +# define AV_RL64(p) AV_RN64(p) +# elif !defined(AV_RN64) && defined(AV_RL64) +# define AV_RN64(p) AV_RL64(p) +# endif + +# if defined(AV_WN64) && !defined(AV_WL64) +# define AV_WL64(p, v) AV_WN64(p, v) +# elif !defined(AV_WN64) && defined(AV_WL64) +# define AV_WN64(p, v) AV_WL64(p, v) +# endif + +#endif /* !HAVE_BIGENDIAN */ + +/* * Define AV_[RW]N helper macros to simplify definitions not provided * by per-arch headers. */ @@ -190,15 +296,15 @@ struct unaligned_16 { uint16_t l; } __attribute__((packed)); #endif #if HAVE_BIGENDIAN -# define AV_RB(s, p) AV_RN(s, p) -# define AV_WB(s, p, v) AV_WN(s, p, v) -# define AV_RL(s, p) bswap_##s(AV_RN(s, p)) -# define AV_WL(s, p, v) AV_WN(s, p, bswap_##s(v)) +# define AV_RB(s, p) AV_RN##s(p) +# define AV_WB(s, p, v) AV_WN##s(p, v) +# define AV_RL(s, p) bswap_##s(AV_RN##s(p)) +# define AV_WL(s, p, v) AV_WN##s(p, bswap_##s(v)) #else -# define AV_RB(s, p) bswap_##s(AV_RN(s, p)) -# define AV_WB(s, p, v) AV_WN(s, p, bswap_##s(v)) -# define AV_RL(s, p) AV_RN(s, p) -# define AV_WL(s, p, v) AV_WN(s, p, v) +# define AV_RB(s, p) bswap_##s(AV_RN##s(p)) +# define AV_WB(s, p, v) AV_WN##s(p, bswap_##s(v)) +# define AV_RL(s, p) AV_RN##s(p) +# define AV_WL(s, p, v) AV_WN##s(p, v) #endif #define AV_RB8(x) (((const uint8_t*)(x))[0]) -- 2.7.4