diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2006-07-19 08:39:50 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2006-07-19 08:39:50 +0000 |
| commit | 1d94a6620fb8b18ccbba75b7ca74db2fe885e054 (patch) | |
| tree | 8c6d61f0cb05f00f6239cd18c266f4f77eaaa6df /libavutil/adler32.c | |
| parent | cfc4bd4695efcf6d9b246fad12b391161ff35c9c (diff) | |
simplify
Originally committed as revision 5786 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavutil/adler32.c')
| -rw-r--r-- | libavutil/adler32.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/libavutil/adler32.c b/libavutil/adler32.c index 1d814b4561..84b432138e 100644 --- a/libavutil/adler32.c +++ b/libavutil/adler32.c @@ -11,21 +11,16 @@ /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */ #define DO1(buf) {s1 += *buf++; s2 += s1;} -#define DO2(buf) DO1(buf); DO1(buf); -#define DO4(buf) DO2(buf); DO2(buf); -#define DO8(buf) DO4(buf); DO4(buf); -#define DO16(buf) DO8(buf); DO8(buf); +#define DO4(buf) DO1(buf); DO1(buf); DO1(buf); DO1(buf); +#define DO16(buf) DO4(buf); DO4(buf); DO4(buf); DO4(buf); unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, unsigned int len) { unsigned long s1 = adler & 0xffff; unsigned long s2 = (adler >> 16) & 0xffff; - int k; - - if (buf == NULL) return 1L; while (len > 0) { - k = FFMIN(len, NMAX); + int k = FFMIN(len, NMAX); len -= k; #ifndef CONFIG_SMALL while (k >= 16) { |