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Diffstat (limited to 'thirdparty/libwebp/dsp/dec.c')
| -rw-r--r-- | thirdparty/libwebp/dsp/dec.c | 795 |
1 files changed, 0 insertions, 795 deletions
diff --git a/thirdparty/libwebp/dsp/dec.c b/thirdparty/libwebp/dsp/dec.c deleted file mode 100644 index 007e985d8b..0000000000 --- a/thirdparty/libwebp/dsp/dec.c +++ /dev/null @@ -1,795 +0,0 @@ -// Copyright 2010 Google Inc. All Rights Reserved. -// -// Use of this source code is governed by a BSD-style license -// that can be found in the COPYING 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. -// ----------------------------------------------------------------------------- -// -// Speed-critical decoding functions, default plain-C implementations. -// -// Author: Skal (pascal.massimino@gmail.com) - -#include "./dsp.h" -#include "../dec/vp8i_dec.h" -#include "../utils/utils.h" - -//------------------------------------------------------------------------------ - -static WEBP_INLINE uint8_t clip_8b(int v) { - return (!(v & ~0xff)) ? v : (v < 0) ? 0 : 255; -} - -//------------------------------------------------------------------------------ -// Transforms (Paragraph 14.4) - -#define STORE(x, y, v) \ - dst[x + y * BPS] = clip_8b(dst[x + y * BPS] + ((v) >> 3)) - -#define STORE2(y, dc, d, c) do { \ - const int DC = (dc); \ - STORE(0, y, DC + (d)); \ - STORE(1, y, DC + (c)); \ - STORE(2, y, DC - (c)); \ - STORE(3, y, DC - (d)); \ -} while (0) - -#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; - int i; - tmp = C; - 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 = 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] - tmp[3] = a - d; // [-7877, 7879] - tmp += 4; - in++; - } - // Each pass is expanding the dynamic range by ~3.85 (upper bound). - // 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. - // In the worst case scenario, the input to clip_8b() can be as large as - // [-60713, 60968]. - tmp = C; - for (i = 0; i < 4; ++i) { // horizontal pass - const int dc = tmp[0] + 4; - const int a = dc + tmp[8]; - const int b = dc - tmp[8]; - 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); - STORE(3, 0, a - d); - tmp++; - dst += BPS; - } -} - -// 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 = 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 MUL1 -#undef MUL2 -#undef STORE2 - -static void TransformTwo(const int16_t* in, uint8_t* dst, int do_two) { - TransformOne(in, dst); - if (do_two) { - TransformOne(in + 16, dst + 4); - } -} - -static void TransformUV(const int16_t* in, uint8_t* dst) { - VP8Transform(in + 0 * 16, dst, 1); - VP8Transform(in + 2 * 16, dst + 4 * BPS, 1); -} - -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) { - for (i = 0; i < 4; ++i) { - STORE(i, j, DC); - } - } -} - -static void TransformDCUV(const int16_t* in, uint8_t* dst) { - if (in[0 * 16]) VP8TransformDC(in + 0 * 16, dst); - if (in[1 * 16]) VP8TransformDC(in + 1 * 16, dst + 4); - if (in[2 * 16]) VP8TransformDC(in + 2 * 16, dst + 4 * BPS); - if (in[3 * 16]) VP8TransformDC(in + 3 * 16, dst + 4 * BPS + 4); -} - -#undef STORE - -//------------------------------------------------------------------------------ -// Paragraph 14.3 - -static void TransformWHT(const int16_t* in, int16_t* out) { - int tmp[16]; - int i; - for (i = 0; i < 4; ++i) { - const int a0 = in[0 + i] + in[12 + i]; - const int a1 = in[4 + i] + in[ 8 + i]; - const int a2 = in[4 + i] - in[ 8 + i]; - const int a3 = in[0 + i] - in[12 + i]; - tmp[0 + i] = a0 + a1; - tmp[8 + i] = a0 - a1; - tmp[4 + i] = a3 + a2; - tmp[12 + i] = a3 - a2; - } - for (i = 0; i < 4; ++i) { - const int dc = tmp[0 + i * 4] + 3; // w/ rounder - const int a0 = dc + tmp[3 + i * 4]; - const int a1 = tmp[1 + i * 4] + tmp[2 + i * 4]; - const int a2 = tmp[1 + i * 4] - tmp[2 + i * 4]; - const int a3 = dc - tmp[3 + i * 4]; - out[ 0] = (a0 + a1) >> 3; - out[16] = (a3 + a2) >> 3; - out[32] = (a0 - a1) >> 3; - out[48] = (a3 - a2) >> 3; - out += 64; - } -} - -void (*VP8TransformWHT)(const int16_t* in, int16_t* out); - -//------------------------------------------------------------------------------ -// Intra predictions - -#define DST(x, y) dst[(x) + (y) * BPS] - -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; - for (y = 0; y < size; ++y) { - const uint8_t* const clip = clip0 + dst[-1]; - int x; - for (x = 0; x < size; ++x) { - dst[x] = clip[top[x]]; - } - 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); } - -//------------------------------------------------------------------------------ -// 16x16 - -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 - int j; - for (j = 16; j > 0; --j) { - memset(dst, dst[-1], 16); - dst += BPS; - } -} - -static WEBP_INLINE void Put16(int v, uint8_t* dst) { - int j; - for (j = 0; j < 16; ++j) { - memset(dst + j * BPS, v, 16); - } -} - -static void DC16(uint8_t* dst) { // DC - int DC = 16; - int j; - for (j = 0; j < 16; ++j) { - DC += dst[-1 + j * BPS] + dst[j - BPS]; - } - Put16(DC >> 5, dst); -} - -static void DC16NoTop(uint8_t* dst) { // DC with top samples not available - int DC = 8; - int j; - for (j = 0; j < 16; ++j) { - DC += dst[-1 + j * BPS]; - } - Put16(DC >> 4, dst); -} - -static void DC16NoLeft(uint8_t* dst) { // DC with left samples not available - int DC = 8; - int i; - for (i = 0; i < 16; ++i) { - DC += dst[i - BPS]; - } - Put16(DC >> 4, dst); -} - -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) ((uint8_t)(((a) + 2 * (b) + (c) + 2) >> 2)) -#define AVG2(a, b) (((a) + (b) + 1) >> 1) - -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]), - AVG3(top[ 0], top[1], top[2]), - AVG3(top[ 1], top[2], top[3]), - AVG3(top[ 2], top[3], top[4]) - }; - int i; - for (i = 0; i < 4; ++i) { - memcpy(dst + i * BPS, vals, sizeof(vals)); - } -} - -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]; - 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 - uint32_t dc = 4; - int i; - for (i = 0; i < 4; ++i) dc += dst[i - BPS] + dst[-1 + i * BPS]; - dc >>= 3; - for (i = 0; i < 4; ++i) memset(dst + i * BPS, dc, 4); -} - -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]; - const int L = dst[-1 + 3 * BPS]; - const int X = dst[-1 - BPS]; - const int A = dst[0 - BPS]; - const int B = dst[1 - BPS]; - const int C = dst[2 - BPS]; - const int D = dst[3 - BPS]; - DST(0, 3) = AVG3(J, K, L); - 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 - const int A = dst[0 - BPS]; - const int B = dst[1 - BPS]; - const int C = dst[2 - BPS]; - const int D = dst[3 - BPS]; - const int E = dst[4 - BPS]; - const int F = dst[5 - BPS]; - const int G = dst[6 - BPS]; - const int H = dst[7 - BPS]; - DST(0, 0) = AVG3(A, B, C); - 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); -} - -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]; - const int X = dst[-1 - BPS]; - const int A = dst[0 - BPS]; - const int B = dst[1 - BPS]; - const int C = dst[2 - BPS]; - const int D = dst[3 - BPS]; - DST(0, 0) = DST(1, 2) = AVG2(X, A); - DST(1, 0) = DST(2, 2) = AVG2(A, B); - DST(2, 0) = DST(3, 2) = AVG2(B, C); - DST(3, 0) = AVG2(C, D); - - DST(0, 3) = AVG3(K, J, I); - DST(0, 2) = AVG3(J, I, X); - DST(0, 1) = DST(1, 3) = AVG3(I, X, A); - DST(1, 1) = DST(2, 3) = AVG3(X, A, B); - DST(2, 1) = DST(3, 3) = AVG3(A, B, C); - DST(3, 1) = AVG3(B, C, D); -} - -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]; - const int D = dst[3 - BPS]; - const int E = dst[4 - BPS]; - const int F = dst[5 - BPS]; - const int G = dst[6 - BPS]; - const int H = dst[7 - BPS]; - DST(0, 0) = AVG2(A, B); - DST(1, 0) = DST(0, 2) = AVG2(B, C); - DST(2, 0) = DST(1, 2) = AVG2(C, D); - DST(3, 0) = DST(2, 2) = AVG2(D, E); - - DST(0, 1) = AVG3(A, B, C); - DST(1, 1) = DST(0, 3) = AVG3(B, C, D); - DST(2, 1) = DST(1, 3) = AVG3(C, D, E); - DST(3, 1) = DST(2, 3) = AVG3(D, E, F); - DST(3, 2) = AVG3(E, F, G); - DST(3, 3) = AVG3(F, G, H); -} - -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]; - const int L = dst[-1 + 3 * BPS]; - DST(0, 0) = AVG2(I, J); - DST(2, 0) = DST(0, 1) = AVG2(J, K); - DST(2, 1) = DST(0, 2) = AVG2(K, L); - DST(1, 0) = AVG3(I, J, K); - DST(3, 0) = DST(1, 1) = AVG3(J, K, L); - DST(3, 1) = DST(1, 2) = AVG3(K, L, L); - DST(3, 2) = DST(2, 2) = - DST(0, 3) = DST(1, 3) = DST(2, 3) = DST(3, 3) = L; -} - -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]; - const int L = dst[-1 + 3 * BPS]; - const int X = dst[-1 - BPS]; - const int A = dst[0 - BPS]; - const int B = dst[1 - BPS]; - const int C = dst[2 - BPS]; - - DST(0, 0) = DST(2, 1) = AVG2(I, X); - DST(0, 1) = DST(2, 2) = AVG2(J, I); - DST(0, 2) = DST(2, 3) = AVG2(K, J); - DST(0, 3) = AVG2(L, K); - - DST(3, 0) = AVG3(A, B, C); - DST(2, 0) = AVG3(X, A, B); - DST(1, 0) = DST(3, 1) = AVG3(I, X, A); - DST(1, 1) = DST(3, 2) = AVG3(J, I, X); - DST(1, 2) = DST(3, 3) = AVG3(K, J, I); - DST(1, 3) = AVG3(L, K, J); -} - -#undef DST -#undef AVG3 -#undef AVG2 - -VP8PredFunc VP8PredLuma4[NUM_BMODES]; - -//------------------------------------------------------------------------------ -// Chroma - -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 - int j; - for (j = 0; j < 8; ++j) { - memset(dst, dst[-1], 8); - dst += BPS; - } -} - -// helper for chroma-DC predictions -static WEBP_INLINE void Put8x8uv(uint8_t value, uint8_t* dst) { - int j; - for (j = 0; j < 8; ++j) { - memset(dst + j * BPS, value, 8); - } -} - -static void DC8uv(uint8_t* dst) { // DC - int dc0 = 8; - int i; - for (i = 0; i < 8; ++i) { - dc0 += dst[i - BPS] + dst[-1 + i * BPS]; - } - Put8x8uv(dc0 >> 4, dst); -} - -static void DC8uvNoLeft(uint8_t* dst) { // DC with no left samples - int dc0 = 4; - int i; - for (i = 0; i < 8; ++i) { - dc0 += dst[i - BPS]; - } - Put8x8uv(dc0 >> 3, dst); -} - -static void DC8uvNoTop(uint8_t* dst) { // DC with no top samples - int dc0 = 4; - int i; - for (i = 0; i < 8; ++i) { - dc0 += dst[-1 + i * BPS]; - } - Put8x8uv(dc0 >> 3, dst); -} - -static void DC8uvNoTopLeft(uint8_t* dst) { // DC with nothing - Put8x8uv(0x80, dst); -} - -VP8PredFunc VP8PredChroma8[NUM_B_DC_MODES]; - -//------------------------------------------------------------------------------ -// Edge filtering functions - -// 4 pixels in, 2 pixels out -static WEBP_INLINE void do_filter2(uint8_t* p, int step) { - const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step]; - const int a = 3 * (q0 - p0) + VP8ksclip1[p1 - q1]; // in [-893,892] - const int a1 = VP8ksclip2[(a + 4) >> 3]; // in [-16,15] - const int a2 = VP8ksclip2[(a + 3) >> 3]; - p[-step] = VP8kclip1[p0 + a2]; - p[ 0] = VP8kclip1[q0 - a1]; -} - -// 4 pixels in, 4 pixels out -static WEBP_INLINE void do_filter4(uint8_t* p, int step) { - const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step]; - const int a = 3 * (q0 - p0); - const int a1 = VP8ksclip2[(a + 4) >> 3]; - const int a2 = VP8ksclip2[(a + 3) >> 3]; - const int a3 = (a1 + 1) >> 1; - p[-2*step] = VP8kclip1[p1 + a3]; - p[- step] = VP8kclip1[p0 + a2]; - p[ 0] = VP8kclip1[q0 - a1]; - p[ step] = VP8kclip1[q1 - a3]; -} - -// 6 pixels in, 6 pixels out -static WEBP_INLINE void do_filter6(uint8_t* p, int step) { - const int p2 = p[-3*step], p1 = p[-2*step], p0 = p[-step]; - const int q0 = p[0], q1 = p[step], q2 = p[2*step]; - const int a = VP8ksclip1[3 * (q0 - p0) + VP8ksclip1[p1 - q1]]; - // a is in [-128,127], a1 in [-27,27], a2 in [-18,18] and a3 in [-9,9] - const int a1 = (27 * a + 63) >> 7; // eq. to ((3 * a + 7) * 9) >> 7 - const int a2 = (18 * a + 63) >> 7; // eq. to ((2 * a + 7) * 9) >> 7 - const int a3 = (9 * a + 63) >> 7; // eq. to ((1 * a + 7) * 9) >> 7 - p[-3*step] = VP8kclip1[p2 + a3]; - p[-2*step] = VP8kclip1[p1 + a2]; - p[- step] = VP8kclip1[p0 + a1]; - p[ 0] = VP8kclip1[q0 - a1]; - p[ step] = VP8kclip1[q1 - a2]; - p[ 2*step] = VP8kclip1[q2 - a3]; -} - -static WEBP_INLINE int hev(const uint8_t* p, int step, int thresh) { - const int p1 = p[-2*step], p0 = p[-step], q0 = p[0], q1 = p[step]; - return (VP8kabs0[p1 - p0] > thresh) || (VP8kabs0[q1 - q0] > thresh); -} - -static WEBP_INLINE int needs_filter(const uint8_t* p, int step, int t) { - const int p1 = p[-2 * step], p0 = p[-step], q0 = p[0], q1 = p[step]; - return ((4 * VP8kabs0[p0 - q0] + VP8kabs0[p1 - q1]) <= t); -} - -static WEBP_INLINE int needs_filter2(const uint8_t* p, - int step, int t, int it) { - const int p3 = p[-4 * step], p2 = p[-3 * step], p1 = p[-2 * step]; - const int p0 = p[-step], q0 = p[0]; - const int q1 = p[step], q2 = p[2 * step], q3 = p[3 * step]; - if ((4 * VP8kabs0[p0 - q0] + VP8kabs0[p1 - q1]) > t) return 0; - return VP8kabs0[p3 - p2] <= it && VP8kabs0[p2 - p1] <= it && - VP8kabs0[p1 - p0] <= it && VP8kabs0[q3 - q2] <= it && - VP8kabs0[q2 - q1] <= it && VP8kabs0[q1 - q0] <= it; -} - -//------------------------------------------------------------------------------ -// Simple In-loop filtering (Paragraph 15.2) - -static void SimpleVFilter16(uint8_t* p, int stride, int thresh) { - int i; - const int thresh2 = 2 * thresh + 1; - for (i = 0; i < 16; ++i) { - if (needs_filter(p + i, stride, thresh2)) { - do_filter2(p + i, stride); - } - } -} - -static void SimpleHFilter16(uint8_t* p, int stride, int thresh) { - int i; - const int thresh2 = 2 * thresh + 1; - for (i = 0; i < 16; ++i) { - if (needs_filter(p + i * stride, 1, thresh2)) { - do_filter2(p + i * stride, 1); - } - } -} - -static void SimpleVFilter16i(uint8_t* p, int stride, int thresh) { - int k; - for (k = 3; k > 0; --k) { - p += 4 * stride; - SimpleVFilter16(p, stride, thresh); - } -} - -static void SimpleHFilter16i(uint8_t* p, int stride, int thresh) { - int k; - for (k = 3; k > 0; --k) { - p += 4; - SimpleHFilter16(p, stride, thresh); - } -} - -//------------------------------------------------------------------------------ -// Complex In-loop filtering (Paragraph 15.3) - -static WEBP_INLINE void FilterLoop26(uint8_t* p, - int hstride, int vstride, int size, - int thresh, int ithresh, int hev_thresh) { - const int thresh2 = 2 * thresh + 1; - while (size-- > 0) { - if (needs_filter2(p, hstride, thresh2, ithresh)) { - if (hev(p, hstride, hev_thresh)) { - do_filter2(p, hstride); - } else { - do_filter6(p, hstride); - } - } - p += vstride; - } -} - -static WEBP_INLINE void FilterLoop24(uint8_t* p, - int hstride, int vstride, int size, - int thresh, int ithresh, int hev_thresh) { - const int thresh2 = 2 * thresh + 1; - while (size-- > 0) { - if (needs_filter2(p, hstride, thresh2, ithresh)) { - if (hev(p, hstride, hev_thresh)) { - do_filter2(p, hstride); - } else { - do_filter4(p, hstride); - } - } - p += vstride; - } -} - -// on macroblock edges -static void VFilter16(uint8_t* p, int stride, - int thresh, int ithresh, int hev_thresh) { - FilterLoop26(p, stride, 1, 16, thresh, ithresh, hev_thresh); -} - -static void HFilter16(uint8_t* p, int stride, - int thresh, int ithresh, int hev_thresh) { - FilterLoop26(p, 1, stride, 16, thresh, ithresh, hev_thresh); -} - -// on three inner edges -static void VFilter16i(uint8_t* p, int stride, - int thresh, int ithresh, int hev_thresh) { - int k; - for (k = 3; k > 0; --k) { - p += 4 * stride; - FilterLoop24(p, stride, 1, 16, thresh, ithresh, hev_thresh); - } -} - -static void HFilter16i(uint8_t* p, int stride, - int thresh, int ithresh, int hev_thresh) { - int k; - for (k = 3; k > 0; --k) { - p += 4; - FilterLoop24(p, 1, stride, 16, thresh, ithresh, hev_thresh); - } -} - -// 8-pixels wide variant, for chroma filtering -static void VFilter8(uint8_t* u, uint8_t* v, int stride, - int thresh, int ithresh, int hev_thresh) { - FilterLoop26(u, stride, 1, 8, thresh, ithresh, hev_thresh); - FilterLoop26(v, stride, 1, 8, thresh, ithresh, hev_thresh); -} - -static void HFilter8(uint8_t* u, uint8_t* v, int stride, - int thresh, int ithresh, int hev_thresh) { - FilterLoop26(u, 1, stride, 8, thresh, ithresh, hev_thresh); - FilterLoop26(v, 1, stride, 8, thresh, ithresh, hev_thresh); -} - -static void VFilter8i(uint8_t* u, uint8_t* v, int stride, - int thresh, int ithresh, int hev_thresh) { - FilterLoop24(u + 4 * stride, stride, 1, 8, thresh, ithresh, hev_thresh); - FilterLoop24(v + 4 * stride, stride, 1, 8, thresh, ithresh, hev_thresh); -} - -static void HFilter8i(uint8_t* u, uint8_t* v, int stride, - int thresh, int ithresh, int hev_thresh) { - FilterLoop24(u + 4, 1, stride, 8, thresh, ithresh, hev_thresh); - FilterLoop24(v + 4, 1, stride, 8, thresh, ithresh, hev_thresh); -} - -//------------------------------------------------------------------------------ - -static void DitherCombine8x8(const uint8_t* dither, uint8_t* dst, - int dst_stride) { - int i, j; - for (j = 0; j < 8; ++j) { - for (i = 0; i < 8; ++i) { - const int delta0 = dither[i] - VP8_DITHER_AMP_CENTER; - const int delta1 = - (delta0 + VP8_DITHER_DESCALE_ROUNDER) >> VP8_DITHER_DESCALE; - dst[i] = clip_8b((int)dst[i] + delta1); - } - dst += dst_stride; - dither += 8; - } -} - -//------------------------------------------------------------------------------ - -VP8DecIdct2 VP8Transform; -VP8DecIdct VP8TransformAC3; -VP8DecIdct VP8TransformUV; -VP8DecIdct VP8TransformDC; -VP8DecIdct VP8TransformDCUV; - -VP8LumaFilterFunc VP8VFilter16; -VP8LumaFilterFunc VP8HFilter16; -VP8ChromaFilterFunc VP8VFilter8; -VP8ChromaFilterFunc VP8HFilter8; -VP8LumaFilterFunc VP8VFilter16i; -VP8LumaFilterFunc VP8HFilter16i; -VP8ChromaFilterFunc VP8VFilter8i; -VP8ChromaFilterFunc VP8HFilter8i; -VP8SimpleFilterFunc VP8SimpleVFilter16; -VP8SimpleFilterFunc VP8SimpleHFilter16; -VP8SimpleFilterFunc VP8SimpleVFilter16i; -VP8SimpleFilterFunc VP8SimpleHFilter16i; - -void (*VP8DitherCombine8x8)(const uint8_t* dither, uint8_t* dst, - int dst_stride); - -extern void VP8DspInitSSE2(void); -extern void VP8DspInitSSE41(void); -extern void VP8DspInitNEON(void); -extern void VP8DspInitMIPS32(void); -extern void VP8DspInitMIPSdspR2(void); -extern void VP8DspInitMSA(void); - -static volatile VP8CPUInfo dec_last_cpuinfo_used = - (VP8CPUInfo)&dec_last_cpuinfo_used; - -WEBP_TSAN_IGNORE_FUNCTION void VP8DspInit(void) { - if (dec_last_cpuinfo_used == VP8GetCPUInfo) return; - - VP8InitClipTables(); - - VP8TransformWHT = TransformWHT; - VP8Transform = TransformTwo; - VP8TransformUV = TransformUV; - VP8TransformDC = TransformDC; - VP8TransformDCUV = TransformDCUV; - VP8TransformAC3 = TransformAC3; - - VP8VFilter16 = VFilter16; - VP8HFilter16 = HFilter16; - VP8VFilter8 = VFilter8; - VP8HFilter8 = HFilter8; - VP8VFilter16i = VFilter16i; - VP8HFilter16i = HFilter16i; - VP8VFilter8i = VFilter8i; - VP8HFilter8i = HFilter8i; - VP8SimpleVFilter16 = SimpleVFilter16; - VP8SimpleHFilter16 = SimpleHFilter16; - 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; - - VP8DitherCombine8x8 = DitherCombine8x8; - - // 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 - } -#endif -#if defined(WEBP_USE_NEON) - if (VP8GetCPUInfo(kNEON)) { - VP8DspInitNEON(); - } -#endif -#if defined(WEBP_USE_MIPS32) - if (VP8GetCPUInfo(kMIPS32)) { - VP8DspInitMIPS32(); - } -#endif -#if defined(WEBP_USE_MIPS_DSP_R2) - if (VP8GetCPUInfo(kMIPSdspR2)) { - VP8DspInitMIPSdspR2(); - } -#endif -#if defined(WEBP_USE_MSA) - if (VP8GetCPUInfo(kMSA)) { - VP8DspInitMSA(); - } -#endif - } - dec_last_cpuinfo_used = VP8GetCPUInfo; -} |