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Diffstat (limited to 'media/libyuv/libyuv/source/compare_mmi.cc')
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1 files changed, 123 insertions, 0 deletions
diff --git a/media/libyuv/libyuv/source/compare_mmi.cc b/media/libyuv/libyuv/source/compare_mmi.cc new file mode 100644 index 0000000000..7640d9468c --- /dev/null +++ b/media/libyuv/libyuv/source/compare_mmi.cc @@ -0,0 +1,123 @@ +/* + * Copyright 2012 The LibYuv Project Authors. All rights reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "libyuv/basic_types.h" + +#include "libyuv/compare_row.h" + +#ifdef __cplusplus +namespace libyuv { +extern "C" { +#endif + +// This module is for Mips MMI. +#if !defined(LIBYUV_DISABLE_MMI) && defined(_MIPS_ARCH_LOONGSON3A) + +// Hakmem method for hamming distance. +uint32_t HammingDistance_MMI(const uint8_t* src_a, + const uint8_t* src_b, + int count) { + uint32_t diff = 0u; + + uint64_t temp = 0, temp1 = 0, ta = 0, tb = 0; + uint64_t c1 = 0x5555555555555555; + uint64_t c2 = 0x3333333333333333; + uint64_t c3 = 0x0f0f0f0f0f0f0f0f; + uint32_t c4 = 0x01010101; + uint64_t s1 = 1, s2 = 2, s3 = 4; + __asm__ volatile( + "1: \n\t" + "ldc1 %[ta], 0(%[src_a]) \n\t" + "ldc1 %[tb], 0(%[src_b]) \n\t" + "xor %[temp], %[ta], %[tb] \n\t" + "psrlw %[temp1], %[temp], %[s1] \n\t" // temp1=x>>1 + "and %[temp1], %[temp1], %[c1] \n\t" // temp1&=c1 + "psubw %[temp1], %[temp], %[temp1] \n\t" // x-temp1 + "and %[temp], %[temp1], %[c2] \n\t" // t = (u&c2) + "psrlw %[temp1], %[temp1], %[s2] \n\t" // u>>2 + "and %[temp1], %[temp1], %[c2] \n\t" // u>>2 & c2 + "paddw %[temp1], %[temp1], %[temp] \n\t" // t1 = t1+t + "psrlw %[temp], %[temp1], %[s3] \n\t" // u>>4 + "paddw %[temp1], %[temp1], %[temp] \n\t" // u+(u>>4) + "and %[temp1], %[temp1], %[c3] \n\t" //&c3 + "dmfc1 $t0, %[temp1] \n\t" + "dsrl32 $t0, $t0, 0 \n\t " + "mul $t0, $t0, %[c4] \n\t" + "dsrl $t0, $t0, 24 \n\t" + "dadd %[diff], %[diff], $t0 \n\t" + "dmfc1 $t0, %[temp1] \n\t" + "mul $t0, $t0, %[c4] \n\t" + "dsrl $t0, $t0, 24 \n\t" + "dadd %[diff], %[diff], $t0 \n\t" + "daddiu %[src_a], %[src_a], 8 \n\t" + "daddiu %[src_b], %[src_b], 8 \n\t" + "addiu %[count], %[count], -8 \n\t" + "bgtz %[count], 1b \n\t" + "nop \n\t" + : [diff] "+r"(diff), [src_a] "+r"(src_a), [src_b] "+r"(src_b), + [count] "+r"(count), [ta] "+f"(ta), [tb] "+f"(tb), [temp] "+f"(temp), + [temp1] "+f"(temp1) + : [c1] "f"(c1), [c2] "f"(c2), [c3] "f"(c3), [c4] "r"(c4), [s1] "f"(s1), + [s2] "f"(s2), [s3] "f"(s3) + : "memory"); + return diff; +} + +uint32_t SumSquareError_MMI(const uint8_t* src_a, + const uint8_t* src_b, + int count) { + uint32_t sse = 0u; + uint32_t sse_hi = 0u, sse_lo = 0u; + + uint64_t src1, src2; + uint64_t diff, diff_hi, diff_lo; + uint64_t sse_sum, sse_tmp; + + const uint64_t mask = 0x0ULL; + + __asm__ volatile( + "xor %[sse_sum], %[sse_sum], %[sse_sum] \n\t" + + "1: \n\t" + "ldc1 %[src1], 0x00(%[src_a]) \n\t" + "ldc1 %[src2], 0x00(%[src_b]) \n\t" + "pasubub %[diff], %[src1], %[src2] \n\t" + "punpcklbh %[diff_lo], %[diff], %[mask] \n\t" + "punpckhbh %[diff_hi], %[diff], %[mask] \n\t" + "pmaddhw %[sse_tmp], %[diff_lo], %[diff_lo] \n\t" + "paddw %[sse_sum], %[sse_sum], %[sse_tmp] \n\t" + "pmaddhw %[sse_tmp], %[diff_hi], %[diff_hi] \n\t" + "paddw %[sse_sum], %[sse_sum], %[sse_tmp] \n\t" + + "daddiu %[src_a], %[src_a], 0x08 \n\t" + "daddiu %[src_b], %[src_b], 0x08 \n\t" + "daddiu %[count], %[count], -0x08 \n\t" + "bnez %[count], 1b \n\t" + + "mfc1 %[sse_lo], %[sse_sum] \n\t" + "mfhc1 %[sse_hi], %[sse_sum] \n\t" + "daddu %[sse], %[sse_hi], %[sse_lo] \n\t" + : [sse] "+&r"(sse), [diff] "=&f"(diff), [src1] "=&f"(src1), + [src2] "=&f"(src2), [diff_lo] "=&f"(diff_lo), [diff_hi] "=&f"(diff_hi), + [sse_sum] "=&f"(sse_sum), [sse_tmp] "=&f"(sse_tmp), + [sse_hi] "+&r"(sse_hi), [sse_lo] "+&r"(sse_lo) + : [src_a] "r"(src_a), [src_b] "r"(src_b), [count] "r"(count), + [mask] "f"(mask) + : "memory"); + + return sse; +} + +#endif // !defined(LIBYUV_DISABLE_MMI) && defined(_MIPS_ARCH_LOONGSON3A) + +#ifdef __cplusplus +} // extern "C" +} // namespace libyuv +#endif |