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| author | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2007-08-19 12:36:15 +0000 |
|---|---|---|
| committer | Reimar Döffinger <Reimar.Doeffinger@gmx.de> | 2007-08-19 12:36:15 +0000 |
| commit | 7b07d3e8feab3e8d6e25303f3e469e250027bb61 (patch) | |
| tree | b34d997f8bb7d96406204c74a277101645bbf898 | |
| parent | 4f48929248e2d5c47ea0313155368df6ec2e83fa (diff) | |
| download | ffmpeg-7b07d3e8feab3e8d6e25303f3e469e250027bb61.tar.gz | |
Use defines instead of raw hex numbers to specify CRC polynomials
Originally committed as revision 10143 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/utils.c | 6 | ||||
| -rw-r--r-- | libavutil/crc.c | 8 | ||||
| -rw-r--r-- | libavutil/crc.h | 7 |
3 files changed, 14 insertions, 7 deletions
diff --git a/libavcodec/utils.c b/libavcodec/utils.c index e494baf965..3b194899b3 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -1235,9 +1235,9 @@ static void init_crcs(void){ av_crc8005 = av_mallocz_static(sizeof(AVCRC) * 257); av_crc07 = av_mallocz_static(sizeof(AVCRC) * 257); #endif - av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257); - av_crc_init(av_crc8005 , 0, 16, 0x8005 , sizeof(AVCRC)*257); - av_crc_init(av_crc07 , 0, 8, 0x07 , sizeof(AVCRC)*257); + av_crc_init(av_crc04C11DB7, 0, 32, AV_CRC_32_IEEE, sizeof(AVCRC)*257); + av_crc_init(av_crc8005 , 0, 16, AV_CRC_16 , sizeof(AVCRC)*257); + av_crc_init(av_crc07 , 0, 8, AV_CRC_8_ATM , sizeof(AVCRC)*257); } void avcodec_init(void) diff --git a/libavutil/crc.c b/libavutil/crc.c index 02fb860b86..b519ac43de 100644 --- a/libavutil/crc.c +++ b/libavutil/crc.c @@ -94,10 +94,10 @@ uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t le main(){ uint8_t buf[1999]; int i; - int p[4][4]={{1, 32, 0xedb88320L, 0x3D5CDD04}, - {0, 32, 0x04c11db7L, 0xC0F5BAE0}, - {0, 16, 0x8005 , 0x1FBB }, - {0, 8, 0x07 , 0xE3 },}; + int p[4][4]={{1, 32, AV_CRC_32_IEEE_LE, 0x3D5CDD04}, + {0, 32, AV_CRC_32_IEEE , 0xC0F5BAE0}, + {0, 16, AV_CRC_16 , 0x1FBB }, + {0, 8, AV_CRC_8_ATM , 0xE3 },}; AVCRC ctx[1 ? 1024:257]; for(i=0; i<sizeof(buf); i++) diff --git a/libavutil/crc.h b/libavutil/crc.h index 11c4fd09b0..4fdc4bbd2a 100644 --- a/libavutil/crc.h +++ b/libavutil/crc.h @@ -26,6 +26,13 @@ typedef uint32_t AVCRC; +#define AV_CRC_8_ATM 0x07 +#define AV_CRC_16 0x8005 +#define AV_CRC_16_CCITT 0x1021 +#define AV_CRC_32_IEEE 0x04C11DB7L +//! reversed bitorder version of AV_CRC_32_IEEE +#define AV_CRC_32_IEEE_LE 0xEDB88320L + #if LIBAVUTIL_VERSION_INT < (50<<16) extern AVCRC *av_crcEDB88320; extern AVCRC *av_crc04C11DB7; |