kenmirrors/freeswitch
1
0
Fork 0
mirror of https://github.com/signalwire/freeswitch.git synced 2025-08-13 17:38:59 +00:00
Code Issues Projects Releases Wiki Activity

[libvpx] Update to v1.8.1 from https://chromium.googlesource.com/webm/libvpx

Browse Source
This commit is contained in:
Anthony Minessale
2019-09-11 15:51:47 +00:00
committed by Andrey Volk
parent 34fcadbd53
commit ceb051af4e
821 changed files with 89961 additions and 48650 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
libs/libvpx/third_party/libyuv/source/compare_common.cc vendored
View File

@@ -17,20 +17,80 @@ namespace libyuv {
extern "C" {
#endif
uint32 SumSquareError_C(const uint8* src_a, const uint8* src_b, int count) {
uint32 sse = 0u;
#if ORIGINAL_OPT
uint32_t HammingDistance_C1(const uint8_t* src_a,
const uint8_t* src_b,
int count) {
uint32_t diff = 0u;
int i;
for (i = 0; i < count; ++i) {
int x = src_a[i] ^ src_b[i];
if (x & 1)
++diff;
if (x & 2)
++diff;
if (x & 4)
++diff;
if (x & 8)
++diff;
if (x & 16)
++diff;
if (x & 32)
++diff;
if (x & 64)
++diff;
if (x & 128)
++diff;
}
return diff;
}
#endif
// Hakmem method for hamming distance.
uint32_t HammingDistance_C(const uint8_t* src_a,
const uint8_t* src_b,
int count) {
uint32_t diff = 0u;
int i;
for (i = 0; i < count - 3; i += 4) {
uint32_t x = *((const uint32_t*)src_a) ^ *((const uint32_t*)src_b);
uint32_t u = x - ((x >> 1) & 0x55555555);
u = ((u >> 2) & 0x33333333) + (u & 0x33333333);
diff += ((((u + (u >> 4)) & 0x0f0f0f0f) * 0x01010101) >> 24);
src_a += 4;
src_b += 4;
}
for (; i < count; ++i) {
uint32_t x = *src_a ^ *src_b;
uint32_t u = x - ((x >> 1) & 0x55);
u = ((u >> 2) & 0x33) + (u & 0x33);
diff += (u + (u >> 4)) & 0x0f;
src_a += 1;
src_b += 1;
}
return diff;
}
uint32_t SumSquareError_C(const uint8_t* src_a,
const uint8_t* src_b,
int count) {
uint32_t sse = 0u;
int i;
for (i = 0; i < count; ++i) {
int diff = src_a[i] - src_b[i];
sse += (uint32)(diff * diff);
sse += (uint32_t)(diff * diff);
}
return sse;
}
// hash seed of 5381 recommended.
// Internal C version of HashDjb2 with int sized count for efficiency.
uint32 HashDjb2_C(const uint8* src, int count, uint32 seed) {
uint32 hash = seed;
uint32_t HashDjb2_C(const uint8_t* src, int count, uint32_t seed) {
uint32_t hash = seed;
int i;
for (i = 0; i < count; ++i) {
hash += (hash << 5) + src[i];