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@ -26,24 +26,28 @@ |
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#define BASE 65521L /* largest prime smaller than 65536 */ |
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#define DO1(buf) {s1 += *buf++; s2 += s1;} |
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#define DO1(buf) { s1 += *buf++; s2 += s1; } |
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#define DO4(buf) DO1(buf); DO1(buf); DO1(buf); DO1(buf); |
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#define DO16(buf) DO4(buf); DO4(buf); DO4(buf); DO4(buf); |
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unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, unsigned int len) |
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unsigned long av_adler32_update(unsigned long adler, const uint8_t * buf, |
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unsigned int len) |
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{ |
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unsigned long s1 = adler & 0xffff; |
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unsigned long s2 = adler >> 16; |
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while (len>0) { |
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while (len > 0) { |
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#if CONFIG_SMALL |
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while(len>4 && s2 < (1U<<31)){ |
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DO4(buf); len-=4; |
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while (len > 4 && s2 < (1U << 31)) { |
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DO4(buf); |
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len -= 4; |
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} |
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#else |
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while(len>16 && s2 < (1U<<31)){ |
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DO16(buf); len-=16; |
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#endif |
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while (len > 16 && s2 < (1U << 31)) { |
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DO16(buf); |
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len -= 16; |
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} |
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#endif |
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DO1(buf); len--; |
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s1 %= BASE; |
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s2 %= BASE; |
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@ -61,9 +65,11 @@ int main(int argc, char **argv) |
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{ |
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int i; |
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char data[LEN]; |
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av_log_set_level(AV_LOG_DEBUG); |
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for(i=0; i<LEN; i++) |
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data[i]= ((i*i)>>3) + 123*i; |
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for (i = 0; i < LEN; i++) |
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data[i] = ((i * i) >> 3) + 123 * i; |
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if (argc > 1 && !strcmp(argv[1], "-t")) { |
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for (i = 0; i < 1000; i++) { |
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@ -76,6 +82,6 @@ int main(int argc, char **argv) |
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} |
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av_log(NULL, AV_LOG_DEBUG, "%X (expected 50E6E508)\n", checksum); |
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return checksum == 0x50e6e508? 0 : 1; |
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return checksum == 0x50e6e508 ? 0 : 1; |
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} |
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#endif |
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