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Unified Diff: third_party/libwebp/dsp/dec.c

Issue 1546003002: libwebp: update to 0.5.0 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 5 years ago
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Index: third_party/libwebp/dsp/dec.c
diff --git a/third_party/libwebp/dsp/dec.c b/third_party/libwebp/dsp/dec.c
index 3a8dc81ff4a0de67c0b5d8cc2f0000c65d02269f..a78720649b6d6b6265386eb0b1422d4a89b34db7 100644
--- a/third_party/libwebp/dsp/dec.c
+++ b/third_party/libwebp/dsp/dec.c
@@ -7,7 +7,7 @@
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
-// Speed-critical decoding functions.
+// Speed-critical decoding functions, default plain-C implementations.
//
// Author: Skal (pascal.massimino@gmail.com)
@@ -34,9 +34,8 @@ static WEBP_INLINE uint8_t clip_8b(int v) {
STORE(3, y, DC - (d)); \
} while (0)
-static const int kC1 = 20091 + (1 << 16);
-static const int kC2 = 35468;
-#define MUL(a, b) (((a) * (b)) >> 16)
+#define MUL1(a) ((((a) * 20091) >> 16) + (a))
+#define MUL2(a) (((a) * 35468) >> 16)
static void TransformOne(const int16_t* in, uint8_t* dst) {
int C[4 * 4], *tmp;
@@ -45,8 +44,8 @@ static void TransformOne(const int16_t* in, uint8_t* dst) {
for (i = 0; i < 4; ++i) { // vertical pass
const int a = in[0] + in[8]; // [-4096, 4094]
const int b = in[0] - in[8]; // [-4095, 4095]
- const int c = MUL(in[4], kC2) - MUL(in[12], kC1); // [-3783, 3783]
- const int d = MUL(in[4], kC1) + MUL(in[12], kC2); // [-3785, 3781]
+ const int c = MUL2(in[4]) - MUL1(in[12]); // [-3783, 3783]
+ const int d = MUL1(in[4]) + MUL2(in[12]); // [-3785, 3781]
tmp[0] = a + d; // [-7881, 7875]
tmp[1] = b + c; // [-7878, 7878]
tmp[2] = b - c; // [-7878, 7878]
@@ -55,7 +54,7 @@ static void TransformOne(const int16_t* in, uint8_t* dst) {
in++;
}
// Each pass is expanding the dynamic range by ~3.85 (upper bound).
- // The exact value is (2. + (kC1 + kC2) / 65536).
+ // The exact value is (2. + (20091 + 35468) / 65536).
// After the second pass, maximum interval is [-3794, 3794], assuming
// an input in [-2048, 2047] interval. We then need to add a dst value
// in the [0, 255] range.
@@ -66,8 +65,8 @@ static void TransformOne(const int16_t* in, uint8_t* dst) {
const int dc = tmp[0] + 4;
const int a = dc + tmp[8];
const int b = dc - tmp[8];
- const int c = MUL(tmp[4], kC2) - MUL(tmp[12], kC1);
- const int d = MUL(tmp[4], kC1) + MUL(tmp[12], kC2);
+ const int c = MUL2(tmp[4]) - MUL1(tmp[12]);
+ const int d = MUL1(tmp[4]) + MUL2(tmp[12]);
STORE(0, 0, a + d);
STORE(1, 0, b + c);
STORE(2, 0, b - c);
@@ -80,16 +79,17 @@ static void TransformOne(const int16_t* in, uint8_t* dst) {
// Simplified transform when only in[0], in[1] and in[4] are non-zero
static void TransformAC3(const int16_t* in, uint8_t* dst) {
const int a = in[0] + 4;
- const int c4 = MUL(in[4], kC2);
- const int d4 = MUL(in[4], kC1);
- const int c1 = MUL(in[1], kC2);
- const int d1 = MUL(in[1], kC1);
+ const int c4 = MUL2(in[4]);
+ const int d4 = MUL1(in[4]);
+ const int c1 = MUL2(in[1]);
+ const int d1 = MUL1(in[1]);
STORE2(0, a + d4, d1, c1);
STORE2(1, a + c4, d1, c1);
STORE2(2, a - c4, d1, c1);
STORE2(3, a - d4, d1, c1);
}
-#undef MUL
+#undef MUL1
+#undef MUL2
#undef STORE2
static void TransformTwo(const int16_t* in, uint8_t* dst, int do_two) {
@@ -104,7 +104,7 @@ static void TransformUV(const int16_t* in, uint8_t* dst) {
VP8Transform(in + 2 * 16, dst + 4 * BPS, 1);
}
-static void TransformDC(const int16_t *in, uint8_t* dst) {
+static void TransformDC(const int16_t* in, uint8_t* dst) {
const int DC = in[0] + 4;
int i, j;
for (j = 0; j < 4; ++j) {
@@ -160,7 +160,7 @@ void (*VP8TransformWHT)(const int16_t* in, int16_t* out);
#define DST(x, y) dst[(x) + (y) * BPS]
-static WEBP_INLINE void TrueMotion(uint8_t *dst, int size) {
+static WEBP_INLINE void TrueMotion(uint8_t* dst, int size) {
const uint8_t* top = dst - BPS;
const uint8_t* const clip0 = VP8kclip1 - top[-1];
int y;
@@ -173,21 +173,21 @@ static WEBP_INLINE void TrueMotion(uint8_t *dst, int size) {
dst += BPS;
}
}
-static void TM4(uint8_t *dst) { TrueMotion(dst, 4); }
-static void TM8uv(uint8_t *dst) { TrueMotion(dst, 8); }
-static void TM16(uint8_t *dst) { TrueMotion(dst, 16); }
+static void TM4(uint8_t* dst) { TrueMotion(dst, 4); }
+static void TM8uv(uint8_t* dst) { TrueMotion(dst, 8); }
+static void TM16(uint8_t* dst) { TrueMotion(dst, 16); }
//------------------------------------------------------------------------------
// 16x16
-static void VE16(uint8_t *dst) { // vertical
+static void VE16(uint8_t* dst) { // vertical
int j;
for (j = 0; j < 16; ++j) {
memcpy(dst + j * BPS, dst - BPS, 16);
}
}
-static void HE16(uint8_t *dst) { // horizontal
+static void HE16(uint8_t* dst) { // horizontal
int j;
for (j = 16; j > 0; --j) {
memset(dst, dst[-1], 16);
@@ -202,7 +202,7 @@ static WEBP_INLINE void Put16(int v, uint8_t* dst) {
}
}
-static void DC16(uint8_t *dst) { // DC
+static void DC16(uint8_t* dst) { // DC
int DC = 16;
int j;
for (j = 0; j < 16; ++j) {
@@ -211,7 +211,7 @@ static void DC16(uint8_t *dst) { // DC
Put16(DC >> 5, dst);
}
-static void DC16NoTop(uint8_t *dst) { // DC with top samples not available
+static void DC16NoTop(uint8_t* dst) { // DC with top samples not available
int DC = 8;
int j;
for (j = 0; j < 16; ++j) {
@@ -220,7 +220,7 @@ static void DC16NoTop(uint8_t *dst) { // DC with top samples not available
Put16(DC >> 4, dst);
}
-static void DC16NoLeft(uint8_t *dst) { // DC with left samples not available
+static void DC16NoLeft(uint8_t* dst) { // DC with left samples not available
int DC = 8;
int i;
for (i = 0; i < 16; ++i) {
@@ -229,17 +229,19 @@ static void DC16NoLeft(uint8_t *dst) { // DC with left samples not available
Put16(DC >> 4, dst);
}
-static void DC16NoTopLeft(uint8_t *dst) { // DC with no top and left samples
+static void DC16NoTopLeft(uint8_t* dst) { // DC with no top and left samples
Put16(0x80, dst);
}
+VP8PredFunc VP8PredLuma16[NUM_B_DC_MODES];
+
//------------------------------------------------------------------------------
// 4x4
#define AVG3(a, b, c) (((a) + 2 * (b) + (c) + 2) >> 2)
#define AVG2(a, b) (((a) + (b) + 1) >> 1)
-static void VE4(uint8_t *dst) { // vertical
+static void VE4(uint8_t* dst) { // vertical
const uint8_t* top = dst - BPS;
const uint8_t vals[4] = {
AVG3(top[-1], top[0], top[1]),
@@ -253,19 +255,19 @@ static void VE4(uint8_t *dst) { // vertical
}
}
-static void HE4(uint8_t *dst) { // horizontal
+static void HE4(uint8_t* dst) { // horizontal
const int A = dst[-1 - BPS];
const int B = dst[-1];
const int C = dst[-1 + BPS];
const int D = dst[-1 + 2 * BPS];
const int E = dst[-1 + 3 * BPS];
- *(uint32_t*)(dst + 0 * BPS) = 0x01010101U * AVG3(A, B, C);
- *(uint32_t*)(dst + 1 * BPS) = 0x01010101U * AVG3(B, C, D);
- *(uint32_t*)(dst + 2 * BPS) = 0x01010101U * AVG3(C, D, E);
- *(uint32_t*)(dst + 3 * BPS) = 0x01010101U * AVG3(D, E, E);
+ WebPUint32ToMem(dst + 0 * BPS, 0x01010101U * AVG3(A, B, C));
+ WebPUint32ToMem(dst + 1 * BPS, 0x01010101U * AVG3(B, C, D));
+ WebPUint32ToMem(dst + 2 * BPS, 0x01010101U * AVG3(C, D, E));
+ WebPUint32ToMem(dst + 3 * BPS, 0x01010101U * AVG3(D, E, E));
}
-static void DC4(uint8_t *dst) { // DC
+static void DC4(uint8_t* dst) { // DC
uint32_t dc = 4;
int i;
for (i = 0; i < 4; ++i) dc += dst[i - BPS] + dst[-1 + i * BPS];
@@ -273,7 +275,7 @@ static void DC4(uint8_t *dst) { // DC
for (i = 0; i < 4; ++i) memset(dst + i * BPS, dc, 4);
}
-static void RD4(uint8_t *dst) { // Down-right
+static void RD4(uint8_t* dst) { // Down-right
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
@@ -284,15 +286,15 @@ static void RD4(uint8_t *dst) { // Down-right
const int C = dst[2 - BPS];
const int D = dst[3 - BPS];
DST(0, 3) = AVG3(J, K, L);
- DST(0, 2) = DST(1, 3) = AVG3(I, J, K);
- DST(0, 1) = DST(1, 2) = DST(2, 3) = AVG3(X, I, J);
- DST(0, 0) = DST(1, 1) = DST(2, 2) = DST(3, 3) = AVG3(A, X, I);
- DST(1, 0) = DST(2, 1) = DST(3, 2) = AVG3(B, A, X);
- DST(2, 0) = DST(3, 1) = AVG3(C, B, A);
- DST(3, 0) = AVG3(D, C, B);
+ DST(1, 3) = DST(0, 2) = AVG3(I, J, K);
+ DST(2, 3) = DST(1, 2) = DST(0, 1) = AVG3(X, I, J);
+ DST(3, 3) = DST(2, 2) = DST(1, 1) = DST(0, 0) = AVG3(A, X, I);
+ DST(3, 2) = DST(2, 1) = DST(1, 0) = AVG3(B, A, X);
+ DST(3, 1) = DST(2, 0) = AVG3(C, B, A);
+ DST(3, 0) = AVG3(D, C, B);
}
-static void LD4(uint8_t *dst) { // Down-Left
+static void LD4(uint8_t* dst) { // Down-Left
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
@@ -305,12 +307,12 @@ static void LD4(uint8_t *dst) { // Down-Left
DST(1, 0) = DST(0, 1) = AVG3(B, C, D);
DST(2, 0) = DST(1, 1) = DST(0, 2) = AVG3(C, D, E);
DST(3, 0) = DST(2, 1) = DST(1, 2) = DST(0, 3) = AVG3(D, E, F);
- DST(3, 1) = DST(2, 2) = DST(1, 3) = AVG3(E, F, G);
- DST(3, 2) = DST(2, 3) = AVG3(F, G, H);
- DST(3, 3) = AVG3(G, H, H);
+ DST(3, 1) = DST(2, 2) = DST(1, 3) = AVG3(E, F, G);
+ DST(3, 2) = DST(2, 3) = AVG3(F, G, H);
+ DST(3, 3) = AVG3(G, H, H);
}
-static void VR4(uint8_t *dst) { // Vertical-Right
+static void VR4(uint8_t* dst) { // Vertical-Right
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
@@ -332,7 +334,7 @@ static void VR4(uint8_t *dst) { // Vertical-Right
DST(3, 1) = AVG3(B, C, D);
}
-static void VL4(uint8_t *dst) { // Vertical-Left
+static void VL4(uint8_t* dst) { // Vertical-Left
const int A = dst[0 - BPS];
const int B = dst[1 - BPS];
const int C = dst[2 - BPS];
@@ -354,7 +356,7 @@ static void VL4(uint8_t *dst) { // Vertical-Left
DST(3, 3) = AVG3(F, G, H);
}
-static void HU4(uint8_t *dst) { // Horizontal-Up
+static void HU4(uint8_t* dst) { // Horizontal-Up
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
@@ -369,7 +371,7 @@ static void HU4(uint8_t *dst) { // Horizontal-Up
DST(0, 3) = DST(1, 3) = DST(2, 3) = DST(3, 3) = L;
}
-static void HD4(uint8_t *dst) { // Horizontal-Down
+static void HD4(uint8_t* dst) { // Horizontal-Down
const int I = dst[-1 + 0 * BPS];
const int J = dst[-1 + 1 * BPS];
const int K = dst[-1 + 2 * BPS];
@@ -396,17 +398,19 @@ static void HD4(uint8_t *dst) { // Horizontal-Down
#undef AVG3
#undef AVG2
+VP8PredFunc VP8PredLuma4[NUM_BMODES];
+
//------------------------------------------------------------------------------
// Chroma
-static void VE8uv(uint8_t *dst) { // vertical
+static void VE8uv(uint8_t* dst) { // vertical
int j;
for (j = 0; j < 8; ++j) {
memcpy(dst + j * BPS, dst - BPS, 8);
}
}
-static void HE8uv(uint8_t *dst) { // horizontal
+static void HE8uv(uint8_t* dst) { // horizontal
int j;
for (j = 0; j < 8; ++j) {
memset(dst, dst[-1], 8);
@@ -422,7 +426,7 @@ static WEBP_INLINE void Put8x8uv(uint8_t value, uint8_t* dst) {
}
}
-static void DC8uv(uint8_t *dst) { // DC
+static void DC8uv(uint8_t* dst) { // DC
int dc0 = 8;
int i;
for (i = 0; i < 8; ++i) {
@@ -431,7 +435,7 @@ static void DC8uv(uint8_t *dst) { // DC
Put8x8uv(dc0 >> 4, dst);
}
-static void DC8uvNoLeft(uint8_t *dst) { // DC with no left samples
+static void DC8uvNoLeft(uint8_t* dst) { // DC with no left samples
int dc0 = 4;
int i;
for (i = 0; i < 8; ++i) {
@@ -440,7 +444,7 @@ static void DC8uvNoLeft(uint8_t *dst) { // DC with no left samples
Put8x8uv(dc0 >> 3, dst);
}
-static void DC8uvNoTop(uint8_t *dst) { // DC with no top samples
+static void DC8uvNoTop(uint8_t* dst) { // DC with no top samples
int dc0 = 4;
int i;
for (i = 0; i < 8; ++i) {
@@ -449,26 +453,11 @@ static void DC8uvNoTop(uint8_t *dst) { // DC with no top samples
Put8x8uv(dc0 >> 3, dst);
}
-static void DC8uvNoTopLeft(uint8_t *dst) { // DC with nothing
+static void DC8uvNoTopLeft(uint8_t* dst) { // DC with nothing
Put8x8uv(0x80, dst);
}
-//------------------------------------------------------------------------------
-// default C implementations
-
-const VP8PredFunc VP8PredLuma4[NUM_BMODES] = {
- DC4, TM4, VE4, HE4, RD4, VR4, LD4, VL4, HD4, HU4
-};
-
-const VP8PredFunc VP8PredLuma16[NUM_B_DC_MODES] = {
- DC16, TM16, VE16, HE16,
- DC16NoTop, DC16NoLeft, DC16NoTopLeft
-};
-
-const VP8PredFunc VP8PredChroma8[NUM_B_DC_MODES] = {
- DC8uv, TM8uv, VE8uv, HE8uv,
- DC8uvNoTop, DC8uvNoLeft, DC8uvNoTopLeft
-};
+VP8PredFunc VP8PredChroma8[NUM_B_DC_MODES];
//------------------------------------------------------------------------------
// Edge filtering functions
@@ -685,13 +674,15 @@ VP8SimpleFilterFunc VP8SimpleVFilter16i;
VP8SimpleFilterFunc VP8SimpleHFilter16i;
extern void VP8DspInitSSE2(void);
+extern void VP8DspInitSSE41(void);
extern void VP8DspInitNEON(void);
extern void VP8DspInitMIPS32(void);
+extern void VP8DspInitMIPSdspR2(void);
static volatile VP8CPUInfo dec_last_cpuinfo_used =
(VP8CPUInfo)&dec_last_cpuinfo_used;
-void VP8DspInit(void) {
+WEBP_TSAN_IGNORE_FUNCTION void VP8DspInit(void) {
if (dec_last_cpuinfo_used == VP8GetCPUInfo) return;
VP8InitClipTables();
@@ -716,21 +707,60 @@ void VP8DspInit(void) {
VP8SimpleVFilter16i = SimpleVFilter16i;
VP8SimpleHFilter16i = SimpleHFilter16i;
+ VP8PredLuma4[0] = DC4;
+ VP8PredLuma4[1] = TM4;
+ VP8PredLuma4[2] = VE4;
+ VP8PredLuma4[3] = HE4;
+ VP8PredLuma4[4] = RD4;
+ VP8PredLuma4[5] = VR4;
+ VP8PredLuma4[6] = LD4;
+ VP8PredLuma4[7] = VL4;
+ VP8PredLuma4[8] = HD4;
+ VP8PredLuma4[9] = HU4;
+
+ VP8PredLuma16[0] = DC16;
+ VP8PredLuma16[1] = TM16;
+ VP8PredLuma16[2] = VE16;
+ VP8PredLuma16[3] = HE16;
+ VP8PredLuma16[4] = DC16NoTop;
+ VP8PredLuma16[5] = DC16NoLeft;
+ VP8PredLuma16[6] = DC16NoTopLeft;
+
+ VP8PredChroma8[0] = DC8uv;
+ VP8PredChroma8[1] = TM8uv;
+ VP8PredChroma8[2] = VE8uv;
+ VP8PredChroma8[3] = HE8uv;
+ VP8PredChroma8[4] = DC8uvNoTop;
+ VP8PredChroma8[5] = DC8uvNoLeft;
+ VP8PredChroma8[6] = DC8uvNoTopLeft;
+
// If defined, use CPUInfo() to overwrite some pointers with faster versions.
if (VP8GetCPUInfo != NULL) {
#if defined(WEBP_USE_SSE2)
if (VP8GetCPUInfo(kSSE2)) {
VP8DspInitSSE2();
+#if defined(WEBP_USE_SSE41)
+ if (VP8GetCPUInfo(kSSE4_1)) {
+ VP8DspInitSSE41();
+ }
+#endif
}
-#elif defined(WEBP_USE_NEON)
+#endif
+#if defined(WEBP_USE_NEON)
if (VP8GetCPUInfo(kNEON)) {
VP8DspInitNEON();
}
-#elif defined(WEBP_USE_MIPS32)
+#endif
+#if defined(WEBP_USE_MIPS32)
if (VP8GetCPUInfo(kMIPS32)) {
VP8DspInitMIPS32();
}
#endif
+#if defined(WEBP_USE_MIPS_DSP_R2)
+ if (VP8GetCPUInfo(kMIPSdspR2)) {
+ VP8DspInitMIPSdspR2();
+ }
+#endif
}
dec_last_cpuinfo_used = VP8GetCPUInfo;
}
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