/* * Copyright (c) 2011 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/scale.h" #include #include #include "libyuv/cpu_id.h" #if defined(_MSC_VER) #define ALIGN16(var) __declspec(align(16)) var #else #define ALIGN16(var) var __attribute__((aligned(16))) #endif // Note: A Neon reference manual // http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0204j/CJAJIIGG.html // Note: Some SSE2 reference manuals // cpuvol1.pdf agner_instruction_tables.pdf 253666.pdf 253667.pdf namespace libyuv { // Set the following flag to true to revert to only // using the reference implementation ScalePlaneBox(), and // NOT the optimized versions. Useful for debugging and // when comparing the quality of the resulting YUV planes // as produced by the optimized and non-optimized versions. static bool use_reference_impl_ = false; void SetUseReferenceImpl(bool use) { use_reference_impl_ = use; } /** * NEON downscalers with interpolation. * * Provided by Fritz Koenig * */ #if defined(__ARM_NEON__) && !defined(COVERAGE_ENABLED) #define HAS_SCALEROWDOWN2_NEON void ScaleRowDown2_NEON(const uint8* src_ptr, int /* src_stride */, uint8* dst, int dst_width) { __asm__ volatile ( "1:\n" "vld2.u8 {q0,q1}, [%0]! \n" // load even pixels into q0, odd into q1 "vst1.u8 {q0}, [%1]! \n" // store even pixels "subs %2, %2, #16 \n" // 16 processed per loop "bhi 1b \n" : "+r"(src_ptr), // %0 "+r"(dst), // %1 "+r"(dst_width) // %2 : : "q0", "q1" // Clobber List ); } void ScaleRowDown2Int_NEON(const uint8* src_ptr, int src_stride, uint8* dst, int dst_width) { __asm__ volatile ( "mov r4, #2 \n" // rounding constant "add %1, %0 \n" // change the stride to row 2 pointer "vdup.16 q4, r4 \n" "1:\n" "vld1.u8 {q0,q1}, [%0]! \n" // load row 1 and post increment "vld1.u8 {q2,q3}, [%1]! \n" // load row 2 and post increment "vpaddl.u8 q0, q0 \n" // row 1 add adjacent "vpaddl.u8 q1, q1 \n" "vpadal.u8 q0, q2 \n" // row 2 add adjacent, add row 1 to row 2 "vpadal.u8 q1, q3 \n" "vadd.u16 q0, q4 \n" // rounding "vadd.u16 q1, q4 \n" "vshrn.u16 d0, q0, #2 \n" // downshift and pack "vshrn.u16 d1, q1, #2 \n" "vst1.u8 {q0}, [%2]! \n" "subs %3, %3, #16 \n" // 16 processed per loop "bhi 1b \n" : "+r"(src_ptr), // %0 "+r"(src_stride), // %1 "+r"(dst), // %2 "+r"(dst_width) // %3 : : "r4", "q0", "q1", "q2", "q3", "q4" // Clobber List ); } #define HAS_SCALEROWDOWN4_NEON // Expecting widths on arm devices to be smaller. Went with 8x4 blocks // to get most coverage. Look to back and evaluate 16x4 blocks with // handling of leftovers. static void ScaleRowDown4_NEON(const uint8* src_ptr, int /* src_stride */, uint8* dst_ptr, int dst_width) { __asm__ volatile ( "mov r4, #4 \n" "1: \n" "vld1.u8 {d0[0]}, [%0],r4 \n" // load up only 2 pixels of data to "vld1.u8 {d0[1]}, [%0],r4 \n" // represent the entire 8x4 block "vst1.u16 {d0[0]}, [%1]! \n" "subs %2, #2 \n" // dst_width -= 2 "bhi 1b \n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : : "r4", "q0", "q1", "memory", "cc" ); } static void ScaleRowDown4Int_NEON(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm__ volatile ( "1: \n" "mov r4, %0 \n" "vld1.u8 {d0}, [r4],%3 \n" // load up 8x4 block of input data "vld1.u8 {d1}, [r4],%3 \n" "vld1.u8 {d2}, [r4],%3 \n" "vld1.u8 {d3}, [r4] \n" // data is loaded up int q0 and q1 // q0 = a00 a01 a02 a03 b00 b01 b02 b03 a10 a11 a12 a13 b10 b11 b12 b13 // q1 = a20 a21 a22 a23 b20 b21 b22 b23 a20 a21 a22 a23 b20 b21 b22 b23 // q0 = a00+a01 a02+a03 b00+b01 b02+b03 a10+a11 a12+a13 b10+b11 b12+b13 "vpaddl.u8 q0, q0 \n" // d0 = a00+a01+a20+a21 a02+a03+a22+a23 b00+b01+b20+b21 b02+b03+b22+b23 // d1 = a10+a11+a20+a21 a12+a13+a22+a23 b10+b11+b20+b21 b12+b13+b22+b23 "vpadal.u8 q0, q1 \n" // d0 = a00+a01+a20+a21+a02+a03+a22+a23 b00+b01+b20+b21+b02+b03+b22+b23 // d1 = a10+a11+a20+a21+a12+a13+a22+a23 b10+b11+b20+b21+b12+b13+b22+b23 "vpaddl.u16 q0, q0 \n" // d0 = a00+a01+a20+a21+a02+a03+a22+a23+a10+a11+a20+a21+a12+a13+a22+a23 // b00+b01+b20+b21+b02+b03+b22+b23+b10+b11+b20+b21+b12+b13+b22+b23 "vadd.u32 d0, d1 \n" "vrshr.u32 d0, d0, #4 \n" // divide by 16 w/rounding "vst1.u8 {d0[0]}, [%1]! \n" "vst1.u8 {d0[4]}, [%1]! \n" "add %0, #8 \n" // move src pointer to next 8 pixels "subs %2, #2 \n" // dst_width -= 2 "bhi 1b \n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(src_stride) // %3 : "r4", "q0", "q1", "memory", "cc" ); } /** * SSE2 downscalers with interpolation. * * Provided by Frank Barchard (fbarchard@google.com) * */ // Constants for SSE2 code #elif (defined(WIN32) || defined(__i386__) || defined(__x86_64__)) && \ !defined(COVERAGE_ENABLED) && !TARGET_IPHONE_SIMULATOR #if defined(_MSC_VER) #define TALIGN16(t, var) __declspec(align(16)) t _ ## var #elif defined(OSX) #define TALIGN16(t, var) t var __attribute__((aligned(16))) #else #define TALIGN16(t, var) t _ ## var __attribute__((aligned(16))) #endif // Offsets for source bytes 0 to 9 extern "C" TALIGN16(const uint8, shuf0[16]) = { 0, 1, 3, 4, 5, 7, 8, 9, 128, 128, 128, 128, 128, 128, 128, 128 }; // Offsets for source bytes 11 to 20 with 8 subtracted = 3 to 12. extern "C" TALIGN16(const uint8, shuf1[16]) = { 3, 4, 5, 7, 8, 9, 11, 12, 128, 128, 128, 128, 128, 128, 128, 128 }; // Offsets for source bytes 21 to 31 with 16 subtracted = 5 to 31. extern "C" TALIGN16(const uint8, shuf2[16]) = { 5, 7, 8, 9, 11, 12, 13, 15, 128, 128, 128, 128, 128, 128, 128, 128 }; // Offsets for source bytes 0 to 10 extern "C" TALIGN16(const uint8, shuf01[16]) = { 0, 1, 1, 2, 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10 }; // Offsets for source bytes 10 to 21 with 8 subtracted = 3 to 13. extern "C" TALIGN16(const uint8, shuf11[16]) = { 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13 }; // Offsets for source bytes 21 to 31 with 16 subtracted = 5 to 31. extern "C" TALIGN16(const uint8, shuf21[16]) = { 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13, 13, 14, 14, 15 }; // Coefficients for source bytes 0 to 10 extern "C" TALIGN16(const uint8, madd01[16]) = { 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2 }; // Coefficients for source bytes 10 to 21 extern "C" TALIGN16(const uint8, madd11[16]) = { 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1 }; // Coefficients for source bytes 21 to 31 extern "C" TALIGN16(const uint8, madd21[16]) = { 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3 }; // Coefficients for source bytes 21 to 31 extern "C" TALIGN16(const int16, round34[8]) = { 2, 2, 2, 2, 2, 2, 2, 2 }; extern "C" TALIGN16(const uint8, shuf38a[16]) = { 0, 3, 6, 8, 11, 14, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }; extern "C" TALIGN16(const uint8, shuf38b[16]) = { 128, 128, 128, 128, 128, 128, 0, 3, 6, 8, 11, 14, 128, 128, 128, 128 }; // Arrange words 0,3,6 into 0,1,2 extern "C" TALIGN16(const uint8, shufac0[16]) = { 0, 1, 6, 7, 12, 13, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 }; // Arrange words 0,3,6 into 3,4,5 extern "C" TALIGN16(const uint8, shufac3[16]) = { 128, 128, 128, 128, 128, 128, 0, 1, 6, 7, 12, 13, 128, 128, 128, 128 }; // Scaling values for boxes of 3x3 and 2x3 extern "C" TALIGN16(const uint16, scaleac3[8]) = { 65536 / 9, 65536 / 9, 65536 / 6, 65536 / 9, 65536 / 9, 65536 / 6, 0, 0 }; // Arrange first value for pixels 0,1,2,3,4,5 extern "C" TALIGN16(const uint8, shufab0[16]) = { 0, 128, 3, 128, 6, 128, 8, 128, 11, 128, 14, 128, 128, 128, 128, 128 }; // Arrange second value for pixels 0,1,2,3,4,5 extern "C" TALIGN16(const uint8, shufab1[16]) = { 1, 128, 4, 128, 7, 128, 9, 128, 12, 128, 15, 128, 128, 128, 128, 128 }; // Arrange third value for pixels 0,1,2,3,4,5 extern "C" TALIGN16(const uint8, shufab2[16]) = { 2, 128, 5, 128, 128, 128, 10, 128, 13, 128, 128, 128, 128, 128, 128, 128 }; // Scaling values for boxes of 3x2 and 2x2 extern "C" TALIGN16(const uint16, scaleab2[8]) = { 65536 / 3, 65536 / 3, 65536 / 2, 65536 / 3, 65536 / 3, 65536 / 2, 0, 0 }; #endif #if defined(WIN32) && !defined(COVERAGE_ENABLED) #define HAS_SCALEROWDOWN2_SSE2 // Reads 32 pixels, throws half away and writes 16 pixels. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 16 byte aligned. __declspec(naked) static void ScaleRowDown2_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { mov eax, [esp + 4] // src_ptr // src_stride ignored mov edx, [esp + 12] // dst_ptr mov ecx, [esp + 16] // dst_width pcmpeqb xmm7, xmm7 // generate mask 0x00ff00ff psrlw xmm7, 8 wloop: movdqa xmm0, [eax] movdqa xmm1, [eax + 16] lea eax, [eax + 32] pand xmm0, xmm7 pand xmm1, xmm7 packuswb xmm0, xmm1 movdqa [edx], xmm0 lea edx, [edx + 16] sub ecx, 16 ja wloop ret } } // Blends 32x2 rectangle to 16x1. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 16 byte aligned. __declspec(naked) static void ScaleRowDown2Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { push esi mov eax, [esp + 4 + 4] // src_ptr mov esi, [esp + 4 + 8] // src_stride mov edx, [esp + 4 + 12] // dst_ptr mov ecx, [esp + 4 + 16] // dst_width pcmpeqb xmm7, xmm7 // generate mask 0x00ff00ff psrlw xmm7, 8 wloop: movdqa xmm0, [eax] movdqa xmm1, [eax + 16] movdqa xmm2, [eax + esi] movdqa xmm3, [eax + esi + 16] lea eax, [eax + 32] pavgb xmm0, xmm2 // average rows pavgb xmm1, xmm3 movdqa xmm2, xmm0 // average columns (32 to 16 pixels) psrlw xmm0, 8 movdqa xmm3, xmm1 psrlw xmm1, 8 pand xmm2, xmm7 pand xmm3, xmm7 pavgw xmm0, xmm2 pavgw xmm1, xmm3 packuswb xmm0, xmm1 movdqa [edx], xmm0 lea edx, [edx + 16] sub ecx, 16 ja wloop pop esi ret } } #define HAS_SCALEROWDOWN4_SSE2 // Point samples 32 pixels to 8 pixels. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 8 byte aligned. __declspec(naked) static void ScaleRowDown4_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr // src_stride ignored mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width pcmpeqb xmm7, xmm7 // generate mask 0x000000ff psrld xmm7, 24 wloop: movdqa xmm0, [esi] movdqa xmm1, [esi + 16] lea esi, [esi + 32] pand xmm0, xmm7 pand xmm1, xmm7 packuswb xmm0, xmm1 packuswb xmm0, xmm0 movq qword ptr [edi], xmm0 lea edi, [edi + 8] sub ecx, 8 ja wloop popad ret } } // Blends 32x4 rectangle to 8x1. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 8 byte aligned. __declspec(naked) static void ScaleRowDown4Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov ebx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width pcmpeqb xmm7, xmm7 // generate mask 0x00ff00ff psrlw xmm7, 8 lea edx, [ebx + ebx * 2] // src_stride * 3 wloop: movdqa xmm0, [esi] movdqa xmm1, [esi + 16] movdqa xmm2, [esi + ebx] movdqa xmm3, [esi + ebx + 16] pavgb xmm0, xmm2 // average rows pavgb xmm1, xmm3 movdqa xmm2, [esi + ebx * 2] movdqa xmm3, [esi + ebx * 2 + 16] movdqa xmm4, [esi + edx] movdqa xmm5, [esi + edx + 16] lea esi, [esi + 32] pavgb xmm2, xmm4 pavgb xmm3, xmm5 pavgb xmm0, xmm2 pavgb xmm1, xmm3 movdqa xmm2, xmm0 // average columns (32 to 16 pixels) psrlw xmm0, 8 movdqa xmm3, xmm1 psrlw xmm1, 8 pand xmm2, xmm7 pand xmm3, xmm7 pavgw xmm0, xmm2 pavgw xmm1, xmm3 packuswb xmm0, xmm1 movdqa xmm2, xmm0 // average columns (16 to 8 pixels) psrlw xmm0, 8 pand xmm2, xmm7 pavgw xmm0, xmm2 packuswb xmm0, xmm0 movq qword ptr [edi], xmm0 lea edi, [edi + 8] sub ecx, 8 ja wloop popad ret } } #define HAS_SCALEROWDOWN8_SSE2 // Point samples 32 pixels to 4 pixels. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 4 byte aligned. __declspec(naked) static void ScaleRowDown8_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr // src_stride ignored mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width pcmpeqb xmm7, xmm7 // generate mask isolating 1 src 8 bytes psrlq xmm7, 56 wloop: movdqa xmm0, [esi] movdqa xmm1, [esi + 16] lea esi, [esi + 32] pand xmm0, xmm7 pand xmm1, xmm7 packuswb xmm0, xmm1 // 32->16 packuswb xmm0, xmm0 // 16->8 packuswb xmm0, xmm0 // 8->4 movd dword ptr [edi], xmm0 lea edi, [edi + 4] sub ecx, 4 ja wloop popad ret } } // Blends 32x8 rectangle to 4x1. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 4 byte aligned. __declspec(naked) static void ScaleRowDown8Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov ebx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width lea edx, [ebx + ebx * 2] // src_stride * 3 pxor xmm7, xmm7 wloop: movdqa xmm0, [esi] // average 8 rows to 1 movdqa xmm1, [esi + 16] movdqa xmm2, [esi + ebx] movdqa xmm3, [esi + ebx + 16] pavgb xmm0, xmm2 pavgb xmm1, xmm3 movdqa xmm2, [esi + ebx * 2] movdqa xmm3, [esi + ebx * 2 + 16] movdqa xmm4, [esi + edx] movdqa xmm5, [esi + edx + 16] lea ebp, [esi + ebx * 4] lea esi, [esi + 32] pavgb xmm2, xmm4 pavgb xmm3, xmm5 pavgb xmm0, xmm2 pavgb xmm1, xmm3 movdqa xmm2, [ebp] movdqa xmm3, [ebp + 16] movdqa xmm4, [ebp + ebx] movdqa xmm5, [ebp + ebx + 16] pavgb xmm2, xmm4 pavgb xmm3, xmm5 movdqa xmm4, [ebp + ebx * 2] movdqa xmm5, [ebp + ebx * 2 + 16] movdqa xmm6, [ebp + edx] pavgb xmm4, xmm6 movdqa xmm6, [ebp + edx + 16] pavgb xmm5, xmm6 pavgb xmm2, xmm4 pavgb xmm3, xmm5 pavgb xmm0, xmm2 pavgb xmm1, xmm3 psadbw xmm0, xmm7 // average 32 pixels to 4 psadbw xmm1, xmm7 pshufd xmm0, xmm0, 0xd8 // x1x0 -> xx01 pshufd xmm1, xmm1, 0x8d // x3x2 -> 32xx por xmm0, xmm1 // -> 3201 psrlw xmm0, 3 packuswb xmm0, xmm0 packuswb xmm0, xmm0 movd dword ptr [edi], xmm0 lea edi, [edi + 4] sub ecx, 4 ja wloop popad ret } } #define HAS_SCALEROWDOWN34_SSSE3 // Point samples 32 pixels to 24 pixels. // Produces three 8 byte values. For each 8 bytes, 16 bytes are read. // Then shuffled to do the scaling. // Note that movdqa+palign may be better than movdqu. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 8 byte aligned. __declspec(naked) static void ScaleRowDown34_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr // src_stride ignored mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width movdqa xmm3, _shuf0 movdqa xmm4, _shuf1 movdqa xmm5, _shuf2 wloop: movdqa xmm0, [esi] movdqa xmm2, [esi + 16] lea esi, [esi + 32] movdqa xmm1, xmm2 palignr xmm1, xmm0, 8 pshufb xmm0, xmm3 pshufb xmm1, xmm4 pshufb xmm2, xmm5 movq qword ptr [edi], xmm0 movq qword ptr [edi + 8], xmm1 movq qword ptr [edi + 16], xmm2 lea edi, [edi + 24] sub ecx, 24 ja wloop popad ret } } // Blends 32x2 rectangle to 24x1 // Produces three 8 byte values. For each 8 bytes, 16 bytes are read. // Then shuffled to do the scaling. // Register usage: // xmm0 src_row 0 // xmm1 src_row 1 // xmm2 shuf 0 // xmm3 shuf 1 // xmm4 shuf 2 // xmm5 madd 0 // xmm6 madd 1 // xmm7 round34 // Note that movdqa+palign may be better than movdqu. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 8 byte aligned. __declspec(naked) static void ScaleRowDown34_1_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov ebx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width movdqa xmm2, _shuf01 movdqa xmm3, _shuf11 movdqa xmm4, _shuf21 movdqa xmm5, _madd01 movdqa xmm6, _madd11 movdqa xmm7, _round34 wloop: movdqa xmm0, [esi] // pixels 0..7 movdqa xmm1, [esi+ebx] pavgb xmm0, xmm1 pshufb xmm0, xmm2 pmaddubsw xmm0, xmm5 paddsw xmm0, xmm7 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edi], xmm0 movdqu xmm0, [esi+8] // pixels 8..15 movdqu xmm1, [esi+ebx+8] pavgb xmm0, xmm1 pshufb xmm0, xmm3 pmaddubsw xmm0, xmm6 paddsw xmm0, xmm7 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edi+8], xmm0 movdqa xmm0, [esi+16] // pixels 16..23 movdqa xmm1, [esi+ebx+16] lea esi, [esi+32] pavgb xmm0, xmm1 pshufb xmm0, xmm4 movdqa xmm1, _madd21 pmaddubsw xmm0, xmm1 paddsw xmm0, xmm7 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edi+16], xmm0 lea edi, [edi+24] sub ecx, 24 ja wloop popad ret } } // Note that movdqa+palign may be better than movdqu. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 8 byte aligned. __declspec(naked) static void ScaleRowDown34_0_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov ebx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width movdqa xmm2, _shuf01 movdqa xmm3, _shuf11 movdqa xmm4, _shuf21 movdqa xmm5, _madd01 movdqa xmm6, _madd11 movdqa xmm7, _round34 wloop: movdqa xmm0, [esi] // pixels 0..7 movdqa xmm1, [esi+ebx] pavgb xmm1, xmm0 pavgb xmm0, xmm1 pshufb xmm0, xmm2 pmaddubsw xmm0, xmm5 paddsw xmm0, xmm7 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edi], xmm0 movdqu xmm0, [esi+8] // pixels 8..15 movdqu xmm1, [esi+ebx+8] pavgb xmm1, xmm0 pavgb xmm0, xmm1 pshufb xmm0, xmm3 pmaddubsw xmm0, xmm6 paddsw xmm0, xmm7 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edi+8], xmm0 movdqa xmm0, [esi+16] // pixels 16..23 movdqa xmm1, [esi+ebx+16] lea esi, [esi+32] pavgb xmm1, xmm0 pavgb xmm0, xmm1 pshufb xmm0, xmm4 movdqa xmm1, _madd21 pmaddubsw xmm0, xmm1 paddsw xmm0, xmm7 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edi+16], xmm0 lea edi, [edi+24] sub ecx, 24 ja wloop popad ret } } #define HAS_SCALEROWDOWN38_SSSE3 // 3/8 point sampler // Scale 32 pixels to 12 __declspec(naked) static void ScaleRowDown38_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov edx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width movdqa xmm5, _shuf38a movdqa xmm6, _shuf38b pxor xmm7, xmm7 xloop: movdqa xmm0, [esi] // 16 pixels -> 0,1,2,3,4,5 movdqa xmm1, [esi + 16] // 16 pixels -> 6,7,8,9,10,11 lea esi, [esi + 32] pshufb xmm0, xmm5 pshufb xmm1, xmm6 paddusb xmm0, xmm1 movq qword ptr [edi], xmm0 // write 12 pixels movhlps xmm1, xmm0 movd [edi + 8], xmm1 lea edi, [edi + 12] sub ecx, 12 ja xloop popad ret } } // Scale 16x3 pixels to 6x1 with interpolation __declspec(naked) static void ScaleRowDown38_3_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov edx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width movdqa xmm4, _shufac0 movdqa xmm5, _shufac3 movdqa xmm6, _scaleac3 pxor xmm7, xmm7 xloop: movdqa xmm0, [esi] // sum up 3 rows into xmm0/1 movdqa xmm2, [esi + edx] movhlps xmm1, xmm0 movhlps xmm3, xmm2 punpcklbw xmm0, xmm7 punpcklbw xmm1, xmm7 punpcklbw xmm2, xmm7 punpcklbw xmm3, xmm7 paddusw xmm0, xmm2 paddusw xmm1, xmm3 movdqa xmm2, [esi + edx * 2] lea esi, [esi + 16] movhlps xmm3, xmm2 punpcklbw xmm2, xmm7 punpcklbw xmm3, xmm7 paddusw xmm0, xmm2 paddusw xmm1, xmm3 movdqa xmm2, xmm0 // 8 pixels -> 0,1,2 of xmm2 psrldq xmm0, 2 paddusw xmm2, xmm0 psrldq xmm0, 2 paddusw xmm2, xmm0 pshufb xmm2, xmm4 movdqa xmm3, xmm1 // 8 pixels -> 3,4,5 of xmm2 psrldq xmm1, 2 paddusw xmm3, xmm1 psrldq xmm1, 2 paddusw xmm3, xmm1 pshufb xmm3, xmm5 paddusw xmm2, xmm3 pmulhuw xmm2, xmm6 // divide by 9,9,6, 9,9,6 packuswb xmm2, xmm2 movd [edi], xmm2 // write 6 pixels pextrw eax, xmm2, 2 mov [edi + 4], ax lea edi, [edi + 6] sub ecx, 6 ja xloop popad ret } } // Scale 16x2 pixels to 6x1 with interpolation __declspec(naked) static void ScaleRowDown38_2_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov edx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width movdqa xmm4, _shufab0 movdqa xmm5, _shufab1 movdqa xmm6, _shufab2 movdqa xmm7, _scaleab2 xloop: movdqa xmm2, [esi] // average 2 rows into xmm2 pavgb xmm2, [esi + edx] lea esi, [esi + 16] movdqa xmm0, xmm2 // 16 pixels -> 0,1,2,3,4,5 of xmm0 pshufb xmm0, xmm4 movdqa xmm1, xmm2 pshufb xmm1, xmm5 paddusw xmm0, xmm1 pshufb xmm2, xmm6 paddusw xmm0, xmm2 pmulhuw xmm0, xmm7 // divide by 3,3,2, 3,3,2 packuswb xmm0, xmm0 movd [edi], xmm0 // write 6 pixels pextrw eax, xmm0, 2 mov [edi + 4], ax lea edi, [edi + 6] sub ecx, 6 ja xloop popad ret } } #define HAS_SCALEADDROWS_SSE2 // Reads 8xN bytes and produces 16 shorts at a time. __declspec(naked) static void ScaleAddRows_SSE2(const uint8* src_ptr, int src_stride, uint16* dst_ptr, int src_width, int src_height) { __asm { pushad mov esi, [esp + 32 + 4] // src_ptr mov edx, [esp + 32 + 8] // src_stride mov edi, [esp + 32 + 12] // dst_ptr mov ecx, [esp + 32 + 16] // dst_width mov ebx, [esp + 32 + 20] // height pxor xmm7, xmm7 dec ebx xloop: // first row movdqa xmm2, [esi] lea eax, [esi + edx] movhlps xmm3, xmm2 mov ebp, ebx punpcklbw xmm2, xmm7 punpcklbw xmm3, xmm7 // sum remaining rows yloop: movdqa xmm0, [eax] // read 16 pixels lea eax, [eax + edx] // advance to next row movhlps xmm1, xmm0 punpcklbw xmm0, xmm7 punpcklbw xmm1, xmm7 paddusw xmm2, xmm0 // sum 16 words paddusw xmm3, xmm1 sub ebp, 1 ja yloop movdqa [edi], xmm2 movdqa [edi + 16], xmm3 lea edi, [edi + 32] lea esi, [esi + 16] sub ecx, 16 ja xloop popad ret } } // Bilinear row filtering combines 16x2 -> 16x1. SSE2 version. #define HAS_SCALEFILTERROWS_SSE2 __declspec(naked) static void ScaleFilterRows_SSE2(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction) { __asm { push esi push edi mov edi, [esp + 8 + 4] // dst_ptr mov esi, [esp + 8 + 8] // src_ptr mov edx, [esp + 8 + 12] // src_stride mov ecx, [esp + 8 + 16] // dst_width mov eax, [esp + 8 + 20] // source_y_fraction (0..255) cmp eax, 0 je xloop1 cmp eax, 128 je xloop2 movd xmm6, eax // xmm6 = y fraction punpcklwd xmm6, xmm6 pshufd xmm6, xmm6, 0 neg eax // xmm5 = 256 - y fraction add eax, 256 movd xmm5, eax punpcklwd xmm5, xmm5 pshufd xmm5, xmm5, 0 pxor xmm7, xmm7 xloop: movdqa xmm0, [esi] movdqa xmm2, [esi + edx] lea esi, [esi + 16] movdqa xmm1, xmm0 movdqa xmm3, xmm2 punpcklbw xmm0, xmm7 punpcklbw xmm2, xmm7 punpckhbw xmm1, xmm7 punpckhbw xmm3, xmm7 pmullw xmm0, xmm5 // scale row 0 pmullw xmm1, xmm5 pmullw xmm2, xmm6 // scale row 1 pmullw xmm3, xmm6 paddusw xmm0, xmm2 // sum rows paddusw xmm1, xmm3 psrlw xmm0, 8 psrlw xmm1, 8 packuswb xmm0, xmm1 movdqa [edi], xmm0 lea edi, [edi + 16] sub ecx, 16 ja xloop mov al, [edi - 1] mov [edi], al pop edi pop esi ret xloop1: movdqa xmm0, [esi] lea esi, [esi + 16] movdqa [edi], xmm0 lea edi, [edi + 16] sub ecx, 16 ja xloop1 mov al, [edi - 1] mov [edi], al pop edi pop esi ret xloop2: movdqa xmm0, [esi] movdqa xmm2, [esi + edx] lea esi, [esi + 16] pavgb xmm0, xmm2 movdqa [edi], xmm0 lea edi, [edi + 16] sub ecx, 16 ja xloop2 mov al, [edi - 1] mov [edi], al pop edi pop esi ret } } // Bilinear row filtering combines 16x2 -> 16x1. SSSE3 version. #define HAS_SCALEFILTERROWS_SSSE3 __declspec(naked) static void ScaleFilterRows_SSSE3(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction) { __asm { push esi push edi mov edi, [esp + 8 + 4] // dst_ptr mov esi, [esp + 8 + 8] // src_ptr mov edx, [esp + 8 + 12] // src_stride mov ecx, [esp + 8 + 16] // dst_width mov eax, [esp + 8 + 20] // source_y_fraction (0..255) cmp eax, 0 je xloop1 cmp eax, 128 je xloop2 shr eax, 1 mov ah,al neg al add al, 128 movd xmm7, eax punpcklwd xmm7, xmm7 pshufd xmm7, xmm7, 0 xloop: movdqa xmm0, [esi] movdqa xmm2, [esi + edx] lea esi, [esi + 16] movdqa xmm1, xmm0 punpcklbw xmm0, xmm2 punpckhbw xmm1, xmm2 pmaddubsw xmm0, xmm7 pmaddubsw xmm1, xmm7 psrlw xmm0, 7 psrlw xmm1, 7 packuswb xmm0, xmm1 movdqa [edi], xmm0 lea edi, [edi + 16] sub ecx, 16 ja xloop mov al, [edi - 1] mov [edi], al pop edi pop esi ret xloop1: movdqa xmm0, [esi] lea esi, [esi + 16] movdqa [edi], xmm0 lea edi, [edi + 16] sub ecx, 16 ja xloop1 mov al, [edi - 1] mov [edi], al pop edi pop esi ret xloop2: movdqa xmm0, [esi] movdqa xmm2, [esi + edx] lea esi, [esi + 16] pavgb xmm0, xmm2 movdqa [edi], xmm0 lea edi, [edi + 16] sub ecx, 16 ja xloop2 mov al, [edi - 1] mov [edi], al pop edi pop esi ret } } // Note that movdqa+palign may be better than movdqu. // Alignment requirement: src_ptr 16 byte aligned, dst_ptr 8 byte aligned. __declspec(naked) static void ScaleFilterCols34_SSSE3(uint8* dst_ptr, const uint8* src_ptr, int dst_width) { __asm { mov edx, [esp + 4] // dst_ptr mov eax, [esp + 8] // src_ptr mov ecx, [esp + 12] // dst_width movdqa xmm1, _round34 movdqa xmm2, _shuf01 movdqa xmm3, _shuf11 movdqa xmm4, _shuf21 movdqa xmm5, _madd01 movdqa xmm6, _madd11 movdqa xmm7, _madd21 wloop: movdqa xmm0, [eax] // pixels 0..7 pshufb xmm0, xmm2 pmaddubsw xmm0, xmm5 paddsw xmm0, xmm1 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edx], xmm0 movdqu xmm0, [eax+8] // pixels 8..15 pshufb xmm0, xmm3 pmaddubsw xmm0, xmm6 paddsw xmm0, xmm1 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edx+8], xmm0 movdqa xmm0, [eax+16] // pixels 16..23 lea eax, [eax+32] pshufb xmm0, xmm4 pmaddubsw xmm0, xmm7 paddsw xmm0, xmm1 psrlw xmm0, 2 packuswb xmm0, xmm0 movq qword ptr [edx+16], xmm0 lea edx, [edx+24] sub ecx, 24 ja wloop ret } } #elif (defined(__x86_64__) || defined(__i386__)) && \ !defined(COVERAGE_ENABLED) && !defined(TARGET_IPHONE_SIMULATOR) // GCC versions of row functions are verbatim conversions from Visual C. // Generated using gcc disassembly on Visual C object file: // objdump -D yuvscaler.obj >yuvscaler.txt #define HAS_SCALEROWDOWN2_SSE2 static void ScaleRowDown2_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "pcmpeqb %%xmm7,%%xmm7\n" "psrlw $0x8,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "lea 0x20(%0),%0\n" "pand %%xmm7,%%xmm0\n" "pand %%xmm7,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "movdqa %%xmm0,(%1)\n" "lea 0x10(%1),%1\n" "sub $0x10,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : : "memory" ); } static void ScaleRowDown2Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "pcmpeqb %%xmm7,%%xmm7\n" "psrlw $0x8,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "movdqa (%0,%3,1),%%xmm2\n" "movdqa 0x10(%0,%3,1),%%xmm3\n" "lea 0x20(%0),%0\n" "pavgb %%xmm2,%%xmm0\n" "pavgb %%xmm3,%%xmm1\n" "movdqa %%xmm0,%%xmm2\n" "psrlw $0x8,%%xmm0\n" "movdqa %%xmm1,%%xmm3\n" "psrlw $0x8,%%xmm1\n" "pand %%xmm7,%%xmm2\n" "pand %%xmm7,%%xmm3\n" "pavgw %%xmm2,%%xmm0\n" "pavgw %%xmm3,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "movdqa %%xmm0,(%1)\n" "lea 0x10(%1),%1\n" "sub $0x10,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)) // %3 : "memory" ); } #define HAS_SCALEROWDOWN4_SSE2 static void ScaleRowDown4_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "pcmpeqb %%xmm7,%%xmm7\n" "psrld $0x18,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "lea 0x20(%0),%0\n" "pand %%xmm7,%%xmm0\n" "pand %%xmm7,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,(%1)\n" "lea 0x8(%1),%1\n" "sub $0x8,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : : "memory" ); } static void ScaleRowDown4Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { intptr_t temp = 0; asm volatile( "pcmpeqb %%xmm7,%%xmm7\n" "psrlw $0x8,%%xmm7\n" "lea (%4,%4,2),%3\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "movdqa (%0,%4,1),%%xmm2\n" "movdqa 0x10(%0,%4,1),%%xmm3\n" "pavgb %%xmm2,%%xmm0\n" "pavgb %%xmm3,%%xmm1\n" "movdqa (%0,%4,2),%%xmm2\n" "movdqa 0x10(%0,%4,2),%%xmm3\n" "movdqa (%0,%3,1),%%xmm4\n" "movdqa 0x10(%0,%3,1),%%xmm5\n" "lea 0x20(%0),%0\n" "pavgb %%xmm4,%%xmm2\n" "pavgb %%xmm2,%%xmm0\n" "pavgb %%xmm5,%%xmm3\n" "pavgb %%xmm3,%%xmm1\n" "movdqa %%xmm0,%%xmm2\n" "psrlw $0x8,%%xmm0\n" "movdqa %%xmm1,%%xmm3\n" "psrlw $0x8,%%xmm1\n" "pand %%xmm7,%%xmm2\n" "pand %%xmm7,%%xmm3\n" "pavgw %%xmm2,%%xmm0\n" "pavgw %%xmm3,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "movdqa %%xmm0,%%xmm2\n" "psrlw $0x8,%%xmm0\n" "pand %%xmm7,%%xmm2\n" "pavgw %%xmm2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,(%1)\n" "lea 0x8(%1),%1\n" "sub $0x8,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width), // %2 "+r"(temp) // %3 : "r"(static_cast(src_stride)) // %4 : "memory" ); } #define HAS_SCALEROWDOWN8_SSE2 static void ScaleRowDown8_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "pcmpeqb %%xmm7,%%xmm7\n" "psrlq $0x38,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "lea 0x20(%0),%0\n" "pand %%xmm7,%%xmm0\n" "pand %%xmm7,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movd %%xmm0,(%1)\n" "lea 0x4(%1),%1\n" "sub $0x4,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : : "memory" ); } #if defined(__i386__) extern "C" void ScaleRowDown8Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown8Int_SSE2\n" "_ScaleRowDown8Int_SSE2:\n" #else ".global ScaleRowDown8Int_SSE2\n" "ScaleRowDown8Int_SSE2:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%ebx\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "lea (%ebx,%ebx,2),%edx\n" "pxor %xmm7,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa 0x10(%esi),%xmm1\n" "movdqa (%esi,%ebx,1),%xmm2\n" "movdqa 0x10(%esi,%ebx,1),%xmm3\n" "pavgb %xmm2,%xmm0\n" "pavgb %xmm3,%xmm1\n" "movdqa (%esi,%ebx,2),%xmm2\n" "movdqa 0x10(%esi,%ebx,2),%xmm3\n" "movdqa (%esi,%edx,1),%xmm4\n" "movdqa 0x10(%esi,%edx,1),%xmm5\n" "lea (%esi,%ebx,4),%ebp\n" "lea 0x20(%esi),%esi\n" "pavgb %xmm4,%xmm2\n" "pavgb %xmm5,%xmm3\n" "pavgb %xmm2,%xmm0\n" "pavgb %xmm3,%xmm1\n" "movdqa 0x0(%ebp),%xmm2\n" "movdqa 0x10(%ebp),%xmm3\n" "movdqa 0x0(%ebp,%ebx,1),%xmm4\n" "movdqa 0x10(%ebp,%ebx,1),%xmm5\n" "pavgb %xmm4,%xmm2\n" "pavgb %xmm5,%xmm3\n" "movdqa 0x0(%ebp,%ebx,2),%xmm4\n" "movdqa 0x10(%ebp,%ebx,2),%xmm5\n" "movdqa 0x0(%ebp,%edx,1),%xmm6\n" "pavgb %xmm6,%xmm4\n" "movdqa 0x10(%ebp,%edx,1),%xmm6\n" "pavgb %xmm6,%xmm5\n" "pavgb %xmm4,%xmm2\n" "pavgb %xmm5,%xmm3\n" "pavgb %xmm2,%xmm0\n" "pavgb %xmm3,%xmm1\n" "psadbw %xmm7,%xmm0\n" "psadbw %xmm7,%xmm1\n" "pshufd $0xd8,%xmm0,%xmm0\n" "pshufd $0x8d,%xmm1,%xmm1\n" "por %xmm1,%xmm0\n" "psrlw $0x3,%xmm0\n" "packuswb %xmm0,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movd %xmm0,(%edi)\n" "lea 0x4(%edi),%edi\n" "sub $0x4,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); // fpic is used for magiccam plugin #if !defined(__PIC__) #define HAS_SCALEROWDOWN34_SSSE3 extern "C" void ScaleRowDown34_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown34_SSSE3\n" "_ScaleRowDown34_SSSE3:\n" #else ".global ScaleRowDown34_SSSE3\n" "ScaleRowDown34_SSSE3:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "movdqa _shuf0,%xmm3\n" "movdqa _shuf1,%xmm4\n" "movdqa _shuf2,%xmm5\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa 0x10(%esi),%xmm2\n" "lea 0x20(%esi),%esi\n" "movdqa %xmm2,%xmm1\n" "palignr $0x8,%xmm0,%xmm1\n" "pshufb %xmm3,%xmm0\n" "pshufb %xmm4,%xmm1\n" "pshufb %xmm5,%xmm2\n" "movq %xmm0,(%edi)\n" "movq %xmm1,0x8(%edi)\n" "movq %xmm2,0x10(%edi)\n" "lea 0x18(%edi),%edi\n" "sub $0x18,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); extern "C" void ScaleRowDown34_1_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown34_1_Int_SSSE3\n" "_ScaleRowDown34_1_Int_SSSE3:\n" #else ".global ScaleRowDown34_1_Int_SSSE3\n" "ScaleRowDown34_1_Int_SSSE3:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%ebp\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "movdqa _shuf01,%xmm2\n" "movdqa _shuf11,%xmm3\n" "movdqa _shuf21,%xmm4\n" "movdqa _madd01,%xmm5\n" "movdqa _madd11,%xmm6\n" "movdqa _round34,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%ebp),%xmm1\n" "pavgb %xmm1,%xmm0\n" "pshufb %xmm2,%xmm0\n" "pmaddubsw %xmm5,%xmm0\n" "paddsw %xmm7,%xmm0\n" "psrlw $0x2,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movq %xmm0,(%edi)\n" "movdqu 0x8(%esi),%xmm0\n" "movdqu 0x8(%esi,%ebp),%xmm1\n" "pavgb %xmm1,%xmm0\n" "pshufb %xmm3,%xmm0\n" "pmaddubsw %xmm6,%xmm0\n" "paddsw %xmm7,%xmm0\n" "psrlw $0x2,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movq %xmm0,0x8(%edi)\n" "movdqa 0x10(%esi),%xmm0\n" "movdqa 0x10(%esi,%ebp),%xmm1\n" "lea 0x20(%esi),%esi\n" "pavgb %xmm1,%xmm0\n" "pshufb %xmm4,%xmm0\n" "movdqa _madd21,%xmm1\n" "pmaddubsw %xmm1,%xmm0\n" "paddsw %xmm7,%xmm0\n" "psrlw $0x2,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movq %xmm0,0x10(%edi)\n" "lea 0x18(%edi),%edi\n" "sub $0x18,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); extern "C" void ScaleRowDown34_0_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown34_0_Int_SSSE3\n" "_ScaleRowDown34_0_Int_SSSE3:\n" #else ".global ScaleRowDown34_0_Int_SSSE3\n" "ScaleRowDown34_0_Int_SSSE3:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%ebp\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "movdqa _shuf01,%xmm2\n" "movdqa _shuf11,%xmm3\n" "movdqa _shuf21,%xmm4\n" "movdqa _madd01,%xmm5\n" "movdqa _madd11,%xmm6\n" "movdqa _round34,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%ebp,1),%xmm1\n" "pavgb %xmm0,%xmm1\n" "pavgb %xmm1,%xmm0\n" "pshufb %xmm2,%xmm0\n" "pmaddubsw %xmm5,%xmm0\n" "paddsw %xmm7,%xmm0\n" "psrlw $0x2,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movq %xmm0,(%edi)\n" "movdqu 0x8(%esi),%xmm0\n" "movdqu 0x8(%esi,%ebp,1),%xmm1\n" "pavgb %xmm0,%xmm1\n" "pavgb %xmm1,%xmm0\n" "pshufb %xmm3,%xmm0\n" "pmaddubsw %xmm6,%xmm0\n" "paddsw %xmm7,%xmm0\n" "psrlw $0x2,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movq %xmm0,0x8(%edi)\n" "movdqa 0x10(%esi),%xmm0\n" "movdqa 0x10(%esi,%ebp,1),%xmm1\n" "lea 0x20(%esi),%esi\n" "pavgb %xmm0,%xmm1\n" "pavgb %xmm1,%xmm0\n" "pshufb %xmm4,%xmm0\n" "movdqa _madd21,%xmm1\n" "pmaddubsw %xmm1,%xmm0\n" "paddsw %xmm7,%xmm0\n" "psrlw $0x2,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movq %xmm0,0x10(%edi)\n" "lea 0x18(%edi),%edi\n" "sub $0x18,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); #define HAS_SCALEROWDOWN38_SSSE3 extern "C" void ScaleRowDown38_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown38_SSSE3\n" "_ScaleRowDown38_SSSE3:\n" #else ".global ScaleRowDown38_SSSE3\n" "ScaleRowDown38_SSSE3:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%edx\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "movdqa _shuf38a ,%xmm5\n" "movdqa _shuf38b ,%xmm6\n" "pxor %xmm7,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa 0x10(%esi),%xmm1\n" "lea 0x20(%esi),%esi\n" "pshufb %xmm5,%xmm0\n" "pshufb %xmm6,%xmm1\n" "paddusb %xmm1,%xmm0\n" "movq %xmm0,(%edi)\n" "movhlps %xmm0,%xmm1\n" "movd %xmm1,0x8(%edi)\n" "lea 0xc(%edi),%edi\n" "sub $0xc,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); extern "C" void ScaleRowDown38_3_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown38_3_Int_SSSE3\n" "_ScaleRowDown38_3_Int_SSSE3:\n" #else ".global ScaleRowDown38_3_Int_SSSE3\n" "ScaleRowDown38_3_Int_SSSE3:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%edx\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "movdqa _shufac0,%xmm4\n" "movdqa _shufac3,%xmm5\n" "movdqa _scaleac3,%xmm6\n" "pxor %xmm7,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%edx,1),%xmm2\n" "movhlps %xmm0,%xmm1\n" "movhlps %xmm2,%xmm3\n" "punpcklbw %xmm7,%xmm0\n" "punpcklbw %xmm7,%xmm1\n" "punpcklbw %xmm7,%xmm2\n" "punpcklbw %xmm7,%xmm3\n" "paddusw %xmm2,%xmm0\n" "paddusw %xmm3,%xmm1\n" "movdqa (%esi,%edx,2),%xmm2\n" "lea 0x10(%esi),%esi\n" "movhlps %xmm2,%xmm3\n" "punpcklbw %xmm7,%xmm2\n" "punpcklbw %xmm7,%xmm3\n" "paddusw %xmm2,%xmm0\n" "paddusw %xmm3,%xmm1\n" "movdqa %xmm0,%xmm2\n" "psrldq $0x2,%xmm0\n" "paddusw %xmm0,%xmm2\n" "psrldq $0x2,%xmm0\n" "paddusw %xmm0,%xmm2\n" "pshufb %xmm4,%xmm2\n" "movdqa %xmm1,%xmm3\n" "psrldq $0x2,%xmm1\n" "paddusw %xmm1,%xmm3\n" "psrldq $0x2,%xmm1\n" "paddusw %xmm1,%xmm3\n" "pshufb %xmm5,%xmm3\n" "paddusw %xmm3,%xmm2\n" "pmulhuw %xmm6,%xmm2\n" "packuswb %xmm2,%xmm2\n" "movd %xmm2,(%edi)\n" "pextrw $0x2,%xmm2,%eax\n" "mov %ax,0x4(%edi)\n" "lea 0x6(%edi),%edi\n" "sub $0x6,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); extern "C" void ScaleRowDown38_2_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); asm( ".text\n" #if defined(OSX) ".globl _ScaleRowDown38_2_Int_SSSE3\n" "_ScaleRowDown38_2_Int_SSSE3:\n" #else ".global ScaleRowDown38_2_Int_SSSE3\n" "ScaleRowDown38_2_Int_SSSE3:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%edx\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "movdqa _shufab0,%xmm4\n" "movdqa _shufab1,%xmm5\n" "movdqa _shufab2,%xmm6\n" "movdqa _scaleab2,%xmm7\n" "1:" "movdqa (%esi),%xmm2\n" "pavgb (%esi,%edx,1),%xmm2\n" "lea 0x10(%esi),%esi\n" "movdqa %xmm2,%xmm0\n" "pshufb %xmm4,%xmm0\n" "movdqa %xmm2,%xmm1\n" "pshufb %xmm5,%xmm1\n" "paddusw %xmm1,%xmm0\n" "pshufb %xmm6,%xmm2\n" "paddusw %xmm2,%xmm0\n" "pmulhuw %xmm7,%xmm0\n" "packuswb %xmm0,%xmm0\n" "movd %xmm0,(%edi)\n" "pextrw $0x2,%xmm0,%eax\n" "mov %ax,0x4(%edi)\n" "lea 0x6(%edi),%edi\n" "sub $0x6,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); #endif // __PIC__ #define HAS_SCALEADDROWS_SSE2 extern "C" void ScaleAddRows_SSE2(const uint8* src_ptr, int src_stride, uint16* dst_ptr, int src_width, int src_height); asm( ".text\n" #if defined(OSX) ".globl _ScaleAddRows_SSE2\n" "_ScaleAddRows_SSE2:\n" #else ".global ScaleAddRows_SSE2\n" "ScaleAddRows_SSE2:\n" #endif "pusha\n" "mov 0x24(%esp),%esi\n" "mov 0x28(%esp),%edx\n" "mov 0x2c(%esp),%edi\n" "mov 0x30(%esp),%ecx\n" "mov 0x34(%esp),%ebx\n" "pxor %xmm7,%xmm7\n" "1:" "movdqa (%esi),%xmm2\n" "lea (%esi,%edx,1),%eax\n" "movhlps %xmm2,%xmm3\n" "lea -0x1(%ebx),%ebp\n" "punpcklbw %xmm7,%xmm2\n" "punpcklbw %xmm7,%xmm3\n" "2:" "movdqa (%eax),%xmm0\n" "lea (%eax,%edx,1),%eax\n" "movhlps %xmm0,%xmm1\n" "punpcklbw %xmm7,%xmm0\n" "punpcklbw %xmm7,%xmm1\n" "paddusw %xmm0,%xmm2\n" "paddusw %xmm1,%xmm3\n" "sub $0x1,%ebp\n" "ja 2b\n" "movdqa %xmm2,(%edi)\n" "movdqa %xmm3,0x10(%edi)\n" "lea 0x20(%edi),%edi\n" "lea 0x10(%esi),%esi\n" "sub $0x10,%ecx\n" "ja 1b\n" "popa\n" "ret\n" ); // Bilinear row filtering combines 16x2 -> 16x1. SSE2 version #define HAS_SCALEFILTERROWS_SSE2 extern "C" void ScaleFilterRows_SSE2(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction); asm( ".text\n" #if defined(OSX) ".globl _ScaleFilterRows_SSE2\n" "_ScaleFilterRows_SSE2:\n" #else ".global ScaleFilterRows_SSE2\n" "ScaleFilterRows_SSE2:\n" #endif "push %esi\n" "push %edi\n" "mov 0xc(%esp),%edi\n" "mov 0x10(%esp),%esi\n" "mov 0x14(%esp),%edx\n" "mov 0x18(%esp),%ecx\n" "mov 0x1c(%esp),%eax\n" "cmp $0x0,%eax\n" "je 2f\n" "cmp $0x80,%eax\n" "je 3f\n" "movd %eax,%xmm6\n" "punpcklwd %xmm6,%xmm6\n" "pshufd $0x0,%xmm6,%xmm6\n" "neg %eax\n" "add $0x100,%eax\n" "movd %eax,%xmm5\n" "punpcklwd %xmm5,%xmm5\n" "pshufd $0x0,%xmm5,%xmm5\n" "pxor %xmm7,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%edx,1),%xmm2\n" "lea 0x10(%esi),%esi\n" "movdqa %xmm0,%xmm1\n" "movdqa %xmm2,%xmm3\n" "punpcklbw %xmm7,%xmm0\n" "punpcklbw %xmm7,%xmm2\n" "punpckhbw %xmm7,%xmm1\n" "punpckhbw %xmm7,%xmm3\n" "pmullw %xmm5,%xmm0\n" "pmullw %xmm5,%xmm1\n" "pmullw %xmm6,%xmm2\n" "pmullw %xmm6,%xmm3\n" "paddusw %xmm2,%xmm0\n" "paddusw %xmm3,%xmm1\n" "psrlw $0x8,%xmm0\n" "psrlw $0x8,%xmm1\n" "packuswb %xmm1,%xmm0\n" "movdqa %xmm0,(%edi)\n" "lea 0x10(%edi),%edi\n" "sub $0x10,%ecx\n" "ja 1b\n" "mov -0x1(%edi),%al\n" "mov %al,(%edi)\n" "pop %edi\n" "pop %esi\n" "ret\n" "2:" "movdqa (%esi),%xmm0\n" "lea 0x10(%esi),%esi\n" "movdqa %xmm0,(%edi)\n" "lea 0x10(%edi),%edi\n" "sub $0x10,%ecx\n" "ja 2b\n" "mov -0x1(%edi),%al\n" "mov %al,(%edi)\n" "pop %edi\n" "pop %esi\n" "ret\n" "3:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%edx,1),%xmm2\n" "lea 0x10(%esi),%esi\n" "pavgb %xmm2,%xmm0\n" "movdqa %xmm0,(%edi)\n" "lea 0x10(%edi),%edi\n" "sub $0x10,%ecx\n" "ja 3b\n" "mov -0x1(%edi),%al\n" "mov %al,(%edi)\n" "pop %edi\n" "pop %esi\n" "ret\n" ); // Bilinear row filtering combines 16x2 -> 16x1. SSSE3 version #define HAS_SCALEFILTERROWS_SSSE3 extern "C" void ScaleFilterRows_SSSE3(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction); asm( ".text\n" #if defined(OSX) ".globl _ScaleFilterRows_SSSE3\n" "_ScaleFilterRows_SSSE3:\n" #else ".global ScaleFilterRows_SSSE3\n" "ScaleFilterRows_SSSE3:\n" #endif "push %esi\n" "push %edi\n" "mov 0xc(%esp),%edi\n" "mov 0x10(%esp),%esi\n" "mov 0x14(%esp),%edx\n" "mov 0x18(%esp),%ecx\n" "mov 0x1c(%esp),%eax\n" "cmp $0x0,%eax\n" "je 2f\n" "cmp $0x80,%eax\n" "je 3f\n" "shr %eax\n" "mov %al,%ah\n" "neg %al\n" "add $0x80,%al\n" "movd %eax,%xmm7\n" "punpcklwd %xmm7,%xmm7\n" "pshufd $0x0,%xmm7,%xmm7\n" "1:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%edx,1),%xmm2\n" "lea 0x10(%esi),%esi\n" "movdqa %xmm0,%xmm1\n" "punpcklbw %xmm2,%xmm0\n" "punpckhbw %xmm2,%xmm1\n" "pmaddubsw %xmm7,%xmm0\n" "pmaddubsw %xmm7,%xmm1\n" "psrlw $0x7,%xmm0\n" "psrlw $0x7,%xmm1\n" "packuswb %xmm1,%xmm0\n" "movdqa %xmm0,(%edi)\n" "lea 0x10(%edi),%edi\n" "sub $0x10,%ecx\n" "ja 1b\n" "mov -0x1(%edi),%al\n" "mov %al,(%edi)\n" "pop %edi\n" "pop %esi\n" "ret\n" "2:" "movdqa (%esi),%xmm0\n" "lea 0x10(%esi),%esi\n" "movdqa %xmm0,(%edi)\n" "lea 0x10(%edi),%edi\n" "sub $0x10,%ecx\n" "ja 2b\n" "mov -0x1(%edi),%al\n" "mov %al,(%edi)\n" "pop %edi\n" "pop %esi\n" "ret\n" "3:" "movdqa (%esi),%xmm0\n" "movdqa (%esi,%edx,1),%xmm2\n" "lea 0x10(%esi),%esi\n" "pavgb %xmm2,%xmm0\n" "movdqa %xmm0,(%edi)\n" "lea 0x10(%edi),%edi\n" "sub $0x10,%ecx\n" "ja 3b\n" "mov -0x1(%edi),%al\n" "mov %al,(%edi)\n" "pop %edi\n" "pop %esi\n" "ret\n" ); #elif defined(__x86_64__) static void ScaleRowDown8Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "lea (%3,%3,2),%%r10\n" "pxor %%xmm7,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "movdqa (%0,%3,1),%%xmm2\n" "movdqa 0x10(%0,%3,1),%%xmm3\n" "pavgb %%xmm2,%%xmm0\n" "pavgb %%xmm3,%%xmm1\n" "movdqa (%0,%3,2),%%xmm2\n" "movdqa 0x10(%0,%3,2),%%xmm3\n" "movdqa (%0,%%r10,1),%%xmm4\n" "movdqa 0x10(%0,%%r10,1),%%xmm5\n" "lea (%0,%3,4),%%r11\n" "lea 0x20(%0),%0\n" "pavgb %%xmm4,%%xmm2\n" "pavgb %%xmm5,%%xmm3\n" "pavgb %%xmm2,%%xmm0\n" "pavgb %%xmm3,%%xmm1\n" "movdqa 0x0(%%r11),%%xmm2\n" "movdqa 0x10(%%r11),%%xmm3\n" "movdqa 0x0(%%r11,%3,1),%%xmm4\n" "movdqa 0x10(%%r11,%3,1),%%xmm5\n" "pavgb %%xmm4,%%xmm2\n" "pavgb %%xmm5,%%xmm3\n" "movdqa 0x0(%%r11,%3,2),%%xmm4\n" "movdqa 0x10(%%r11,%3,2),%%xmm5\n" "movdqa 0x0(%%r11,%%r10,1),%%xmm6\n" "pavgb %%xmm6,%%xmm4\n" "movdqa 0x10(%%r11,%%r10,1),%%xmm6\n" "pavgb %%xmm6,%%xmm5\n" "pavgb %%xmm4,%%xmm2\n" "pavgb %%xmm5,%%xmm3\n" "pavgb %%xmm2,%%xmm0\n" "pavgb %%xmm3,%%xmm1\n" "psadbw %%xmm7,%%xmm0\n" "psadbw %%xmm7,%%xmm1\n" "pshufd $0xd8,%%xmm0,%%xmm0\n" "pshufd $0x8d,%%xmm1,%%xmm1\n" "por %%xmm1,%%xmm0\n" "psrlw $0x3,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movd %%xmm0,(%1)\n" "lea 0x4(%1),%1\n" "sub $0x4,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)) // %3 : "memory", "r10", "r11", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" ); } #define HAS_SCALEROWDOWN34_SSSE3 static void ScaleRowDown34_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "movdqa (%3),%%xmm3\n" "movdqa (%4),%%xmm4\n" "movdqa (%5),%%xmm5\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm2\n" "lea 0x20(%0),%0\n" "movdqa %%xmm2,%%xmm1\n" "palignr $0x8,%%xmm0,%%xmm1\n" "pshufb %%xmm3,%%xmm0\n" "pshufb %%xmm4,%%xmm1\n" "pshufb %%xmm5,%%xmm2\n" "movq %%xmm0,(%1)\n" "movq %%xmm1,0x8(%1)\n" "movq %%xmm2,0x10(%1)\n" "lea 0x18(%1),%1\n" "sub $0x18,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(_shuf0), // %3 "r"(_shuf1), // %4 "r"(_shuf2) // %5 : "memory", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5" ); } static void ScaleRowDown34_1_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "movdqa (%4),%%xmm2\n" // _shuf01 "movdqa (%5),%%xmm3\n" // _shuf11 "movdqa (%6),%%xmm4\n" // _shuf21 "movdqa (%7),%%xmm5\n" // _madd01 "movdqa (%8),%%xmm6\n" // _madd11 "movdqa (%9),%%xmm7\n" // _round34 "movdqa (%10),%%xmm8\n" // _madd21 "1:" "movdqa (%0),%%xmm0\n" "movdqa (%0,%3),%%xmm1\n" "pavgb %%xmm1,%%xmm0\n" "pshufb %%xmm2,%%xmm0\n" "pmaddubsw %%xmm5,%%xmm0\n" "paddsw %%xmm7,%%xmm0\n" "psrlw $0x2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,(%1)\n" "movdqu 0x8(%0),%%xmm0\n" "movdqu 0x8(%0,%3),%%xmm1\n" "pavgb %%xmm1,%%xmm0\n" "pshufb %%xmm3,%%xmm0\n" "pmaddubsw %%xmm6,%%xmm0\n" "paddsw %%xmm7,%%xmm0\n" "psrlw $0x2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,0x8(%1)\n" "movdqa 0x10(%0),%%xmm0\n" "movdqa 0x10(%0,%3),%%xmm1\n" "lea 0x20(%0),%0\n" "pavgb %%xmm1,%%xmm0\n" "pshufb %%xmm4,%%xmm0\n" "pmaddubsw %%xmm8,%%xmm0\n" "paddsw %%xmm7,%%xmm0\n" "psrlw $0x2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,0x10(%1)\n" "lea 0x18(%1),%1\n" "sub $0x18,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)), // %3 "r"(_shuf01), // %4 "r"(_shuf11), // %5 "r"(_shuf21), // %6 "r"(_madd01), // %7 "r"(_madd11), // %8 "r"(_round34), // %9 "r"(_madd21) // %10 : "memory", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7", "xmm8" ); } static void ScaleRowDown34_0_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "movdqa (%4),%%xmm2\n" // _shuf01 "movdqa (%5),%%xmm3\n" // _shuf11 "movdqa (%6),%%xmm4\n" // _shuf21 "movdqa (%7),%%xmm5\n" // _madd01 "movdqa (%8),%%xmm6\n" // _madd11 "movdqa (%9),%%xmm7\n" // _round34 "movdqa (%10),%%xmm8\n" // _madd21 "1:" "movdqa (%0),%%xmm0\n" "movdqa (%0,%3,1),%%xmm1\n" "pavgb %%xmm0,%%xmm1\n" "pavgb %%xmm1,%%xmm0\n" "pshufb %%xmm2,%%xmm0\n" "pmaddubsw %%xmm5,%%xmm0\n" "paddsw %%xmm7,%%xmm0\n" "psrlw $0x2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,(%1)\n" "movdqu 0x8(%0),%%xmm0\n" "movdqu 0x8(%0,%3,1),%%xmm1\n" "pavgb %%xmm0,%%xmm1\n" "pavgb %%xmm1,%%xmm0\n" "pshufb %%xmm3,%%xmm0\n" "pmaddubsw %%xmm6,%%xmm0\n" "paddsw %%xmm7,%%xmm0\n" "psrlw $0x2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,0x8(%1)\n" "movdqa 0x10(%0),%%xmm0\n" "movdqa 0x10(%0,%3,1),%%xmm1\n" "lea 0x20(%0),%0\n" "pavgb %%xmm0,%%xmm1\n" "pavgb %%xmm1,%%xmm0\n" "pshufb %%xmm4,%%xmm0\n" "pmaddubsw %%xmm8,%%xmm0\n" "paddsw %%xmm7,%%xmm0\n" "psrlw $0x2,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movq %%xmm0,0x10(%1)\n" "lea 0x18(%1),%1\n" "sub $0x18,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)), // %3 "r"(_shuf01), // %4 "r"(_shuf11), // %5 "r"(_shuf21), // %6 "r"(_madd01), // %7 "r"(_madd11), // %8 "r"(_round34), // %9 "r"(_madd21) // %10 : "memory", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7", "xmm8" ); } #define HAS_SCALEROWDOWN38_SSSE3 static void ScaleRowDown38_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "movdqa (%3),%%xmm5\n" "movdqa (%4),%%xmm6\n" "pxor %%xmm7,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa 0x10(%0),%%xmm1\n" "lea 0x20(%0),%0\n" "pshufb %%xmm5,%%xmm0\n" "pshufb %%xmm6,%%xmm1\n" "paddusb %%xmm1,%%xmm0\n" "movq %%xmm0,(%1)\n" "movhlps %%xmm0,%%xmm1\n" "movd %%xmm1,0x8(%1)\n" "lea 0xc(%1),%1\n" "sub $0xc,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(_shuf38a), // %3 "r"(_shuf38b) // %4 : "memory", "xmm0", "xmm1", "xmm5", "xmm6", "xmm7" ); } static void ScaleRowDown38_3_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "movdqa (%4),%%xmm4\n" "movdqa (%5),%%xmm5\n" "movdqa (%6),%%xmm6\n" "pxor %%xmm7,%%xmm7\n" "1:" "movdqa (%0),%%xmm0\n" "movdqa (%0,%3,1),%%xmm2\n" "movhlps %%xmm0,%%xmm1\n" "movhlps %%xmm2,%%xmm3\n" "punpcklbw %%xmm7,%%xmm0\n" "punpcklbw %%xmm7,%%xmm1\n" "punpcklbw %%xmm7,%%xmm2\n" "punpcklbw %%xmm7,%%xmm3\n" "paddusw %%xmm2,%%xmm0\n" "paddusw %%xmm3,%%xmm1\n" "movdqa (%0,%3,2),%%xmm2\n" "lea 0x10(%0),%0\n" "movhlps %%xmm2,%%xmm3\n" "punpcklbw %%xmm7,%%xmm2\n" "punpcklbw %%xmm7,%%xmm3\n" "paddusw %%xmm2,%%xmm0\n" "paddusw %%xmm3,%%xmm1\n" "movdqa %%xmm0,%%xmm2\n" "psrldq $0x2,%%xmm0\n" "paddusw %%xmm0,%%xmm2\n" "psrldq $0x2,%%xmm0\n" "paddusw %%xmm0,%%xmm2\n" "pshufb %%xmm4,%%xmm2\n" "movdqa %%xmm1,%%xmm3\n" "psrldq $0x2,%%xmm1\n" "paddusw %%xmm1,%%xmm3\n" "psrldq $0x2,%%xmm1\n" "paddusw %%xmm1,%%xmm3\n" "pshufb %%xmm5,%%xmm3\n" "paddusw %%xmm3,%%xmm2\n" "pmulhuw %%xmm6,%%xmm2\n" "packuswb %%xmm2,%%xmm2\n" "movd %%xmm2,(%1)\n" "pextrw $0x2,%%xmm2,%%eax\n" "mov %%ax,0x4(%1)\n" "lea 0x6(%1),%1\n" "sub $0x6,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)), // %3 "r"(_shufac0), // %4 "r"(_shufac3), // %5 "r"(_scaleac3) // %6 : "memory", "rax", "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" ); } static void ScaleRowDown38_2_Int_SSSE3(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { asm volatile( "movdqa (%4),%%xmm4\n" "movdqa (%5),%%xmm5\n" "movdqa (%6),%%xmm6\n" "movdqa (%7),%%xmm7\n" "1:" "movdqa (%0),%%xmm2\n" "pavgb (%0,%3,1),%%xmm2\n" "lea 0x10(%0),%0\n" "movdqa %%xmm2,%%xmm0\n" "pshufb %%xmm4,%%xmm0\n" "movdqa %%xmm2,%%xmm1\n" "pshufb %%xmm5,%%xmm1\n" "paddusw %%xmm1,%%xmm0\n" "pshufb %%xmm6,%%xmm2\n" "paddusw %%xmm2,%%xmm0\n" "pmulhuw %%xmm7,%%xmm0\n" "packuswb %%xmm0,%%xmm0\n" "movd %%xmm0,(%1)\n" "pextrw $0x2,%%xmm0,%%eax\n" "mov %%ax,0x4(%1)\n" "lea 0x6(%1),%1\n" "sub $0x6,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)), // %3 "r"(_shufab0), // %4 "r"(_shufab1), // %5 "r"(_shufab2), // %6 "r"(_scaleab2) // %7 : "memory", "rax", "xmm0", "xmm1", "xmm2", "xmm4", "xmm5", "xmm6", "xmm7" ); } #define HAS_SCALEADDROWS_SSE2 static void ScaleAddRows_SSE2(const uint8* src_ptr, int src_stride, uint16* dst_ptr, int src_width, int src_height) { asm volatile( "pxor %%xmm7,%%xmm7\n" "1:" "movdqa (%0),%%xmm2\n" "lea (%0,%4,1),%%r10\n" "movhlps %%xmm2,%%xmm3\n" "lea -0x1(%3),%%r11\n" "punpcklbw %%xmm7,%%xmm2\n" "punpcklbw %%xmm7,%%xmm3\n" "2:" "movdqa (%%r10),%%xmm0\n" "lea (%%r10,%4,1),%%r10\n" "movhlps %%xmm0,%%xmm1\n" "punpcklbw %%xmm7,%%xmm0\n" "punpcklbw %%xmm7,%%xmm1\n" "paddusw %%xmm0,%%xmm2\n" "paddusw %%xmm1,%%xmm3\n" "sub $0x1,%%r11\n" "ja 2b\n" "movdqa %%xmm2,(%1)\n" "movdqa %%xmm3,0x10(%1)\n" "lea 0x20(%1),%1\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" : "+r"(src_ptr), // %0 "+r"(dst_ptr), // %1 "+r"(src_width), // %2 "+r"(src_height) // %3 : "r"(static_cast(src_stride)) // %4 : "memory", "r10", "r11", "xmm0", "xmm1", "xmm2", "xmm3", "xmm7" ); } // Bilinear row filtering combines 16x2 -> 16x1. SSE2 version #define HAS_SCALEFILTERROWS_SSE2 static void ScaleFilterRows_SSE2(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction) { if (source_y_fraction == 0) { asm volatile( "1:" "movdqa (%1),%%xmm0\n" "lea 0x10(%1),%1\n" "movdqa %%xmm0,(%0)\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" "mov -0x1(%0),%%al\n" "mov %%al,(%0)\n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(dst_width) // %2 : : "memory", "rax", "xmm0" ); return; } else if (source_y_fraction == 128) { asm volatile( "1:" "movdqa (%1),%%xmm0\n" "movdqa (%1,%3,1),%%xmm2\n" "lea 0x10(%1),%1\n" "pavgb %%xmm2,%%xmm0\n" "movdqa %%xmm0,(%0)\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" "mov -0x1(%0),%%al\n" "mov %%al,(%0)\n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)) // %3 : "memory", "rax", "xmm0", "xmm2" ); return; } else { asm volatile( "mov %3,%%eax\n" "movd %%eax,%%xmm6\n" "punpcklwd %%xmm6,%%xmm6\n" "pshufd $0x0,%%xmm6,%%xmm6\n" "neg %%eax\n" "add $0x100,%%eax\n" "movd %%eax,%%xmm5\n" "punpcklwd %%xmm5,%%xmm5\n" "pshufd $0x0,%%xmm5,%%xmm5\n" "pxor %%xmm7,%%xmm7\n" "1:" "movdqa (%1),%%xmm0\n" "movdqa (%1,%4,1),%%xmm2\n" "lea 0x10(%1),%1\n" "movdqa %%xmm0,%%xmm1\n" "movdqa %%xmm2,%%xmm3\n" "punpcklbw %%xmm7,%%xmm0\n" "punpcklbw %%xmm7,%%xmm2\n" "punpckhbw %%xmm7,%%xmm1\n" "punpckhbw %%xmm7,%%xmm3\n" "pmullw %%xmm5,%%xmm0\n" "pmullw %%xmm5,%%xmm1\n" "pmullw %%xmm6,%%xmm2\n" "pmullw %%xmm6,%%xmm3\n" "paddusw %%xmm2,%%xmm0\n" "paddusw %%xmm3,%%xmm1\n" "psrlw $0x8,%%xmm0\n" "psrlw $0x8,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "movdqa %%xmm0,(%0)\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" "mov -0x1(%0),%%al\n" "mov %%al,(%0)\n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(dst_width), // %2 "+r"(source_y_fraction) // %3 : "r"(static_cast(src_stride)) // %4 : "memory", "rax", "xmm0", "xmm1", "xmm2", "xmm3", "xmm5", "xmm6", "xmm7" ); } return; } // Bilinear row filtering combines 16x2 -> 16x1. SSSE3 version #define HAS_SCALEFILTERROWS_SSSE3 static void ScaleFilterRows_SSSE3(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction) { if (source_y_fraction == 0) { asm volatile( "1:" "movdqa (%1),%%xmm0\n" "lea 0x10(%1),%1\n" "movdqa %%xmm0,(%0)\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" "mov -0x1(%0),%%al\n" "mov %%al,(%0)\n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(dst_width) // %2 : : "memory", "rax", "xmm0" ); return; } else if (source_y_fraction == 128) { asm volatile( "1:" "movdqa (%1),%%xmm0\n" "movdqa (%1,%3,1),%%xmm2\n" "lea 0x10(%1),%1\n" "pavgb %%xmm2,%%xmm0\n" "movdqa %%xmm0,(%0)\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" "mov -0x1(%0),%%al\n" "mov %%al,(%0)\n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(dst_width) // %2 : "r"(static_cast(src_stride)) // %3 : "memory", "rax", "xmm0", "xmm2" ); return; } else { asm volatile( "mov %3,%%eax\n" "shr %%eax\n" "mov %%al,%%ah\n" "neg %%al\n" "add $0x80,%%al\n" "movd %%eax,%%xmm7\n" "punpcklwd %%xmm7,%%xmm7\n" "pshufd $0x0,%%xmm7,%%xmm7\n" "1:" "movdqa (%1),%%xmm0\n" "movdqa (%1,%4,1),%%xmm2\n" "lea 0x10(%1),%1\n" "movdqa %%xmm0,%%xmm1\n" "punpcklbw %%xmm2,%%xmm0\n" "punpckhbw %%xmm2,%%xmm1\n" "pmaddubsw %%xmm7,%%xmm0\n" "pmaddubsw %%xmm7,%%xmm1\n" "psrlw $0x7,%%xmm0\n" "psrlw $0x7,%%xmm1\n" "packuswb %%xmm1,%%xmm0\n" "movdqa %%xmm0,(%0)\n" "lea 0x10(%0),%0\n" "sub $0x10,%2\n" "ja 1b\n" "mov -0x1(%0),%%al\n" "mov %%al,(%0)\n" : "+r"(dst_ptr), // %0 "+r"(src_ptr), // %1 "+r"(dst_width), // %2 "+r"(source_y_fraction) // %3 : "r"(static_cast(src_stride)) // %4 : "memory", "rax", "xmm0", "xmm1", "xmm2", "xmm7" ); } return; } #endif #endif // CPU agnostic row functions static void ScaleRowDown2_C(const uint8* src_ptr, int, uint8* dst, int dst_width) { for (int x = 0; x < dst_width; ++x) { *dst++ = *src_ptr; src_ptr += 2; } } static void ScaleRowDown2Int_C(const uint8* src_ptr, int src_stride, uint8* dst, int dst_width) { for (int x = 0; x < dst_width; ++x) { *dst++ = (src_ptr[0] + src_ptr[1] + src_ptr[src_stride] + src_ptr[src_stride + 1] + 2) >> 2; src_ptr += 2; } } static void ScaleRowDown4_C(const uint8* src_ptr, int, uint8* dst, int dst_width) { for (int x = 0; x < dst_width; ++x) { *dst++ = *src_ptr; src_ptr += 4; } } static void ScaleRowDown4Int_C(const uint8* src_ptr, int src_stride, uint8* dst, int dst_width) { for (int x = 0; x < dst_width; ++x) { *dst++ = (src_ptr[0] + src_ptr[1] + src_ptr[2] + src_ptr[3] + src_ptr[src_stride + 0] + src_ptr[src_stride + 1] + src_ptr[src_stride + 2] + src_ptr[src_stride + 3] + src_ptr[src_stride * 2 + 0] + src_ptr[src_stride * 2 + 1] + src_ptr[src_stride * 2 + 2] + src_ptr[src_stride * 2 + 3] + src_ptr[src_stride * 3 + 0] + src_ptr[src_stride * 3 + 1] + src_ptr[src_stride * 3 + 2] + src_ptr[src_stride * 3 + 3] + 8) >> 4; src_ptr += 4; } } // 640 output pixels is enough to allow 5120 input pixels with 1/8 scale down. // Keeping the total buffer under 4096 bytes avoids a stackcheck, saving 4% cpu. static const int kMaxOutputWidth = 640; static const int kMaxRow12 = kMaxOutputWidth * 2; static void ScaleRowDown8_C(const uint8* src_ptr, int, uint8* dst, int dst_width) { for (int x = 0; x < dst_width; ++x) { *dst++ = *src_ptr; src_ptr += 8; } } // Note calling code checks width is less than max and if not // uses ScaleRowDown8_C instead. static void ScaleRowDown8Int_C(const uint8* src_ptr, int src_stride, uint8* dst, int dst_width) { ALIGN16(uint8 src_row[kMaxRow12 * 2]); assert(dst_width <= kMaxOutputWidth); ScaleRowDown4Int_C(src_ptr, src_stride, src_row, dst_width * 2); ScaleRowDown4Int_C(src_ptr + src_stride * 4, src_stride, src_row + kMaxOutputWidth, dst_width * 2); ScaleRowDown2Int_C(src_row, kMaxOutputWidth, dst, dst_width); } static void ScaleRowDown34_C(const uint8* src_ptr, int, uint8* dst, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); uint8* dend = dst + dst_width; do { dst[0] = src_ptr[0]; dst[1] = src_ptr[1]; dst[2] = src_ptr[3]; dst += 3; src_ptr += 4; } while (dst < dend); } // Filter rows 0 and 1 together, 3 : 1 static void ScaleRowDown34_0_Int_C(const uint8* src_ptr, int src_stride, uint8* d, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); uint8* dend = d + dst_width; const uint8* s = src_ptr; const uint8* t = src_ptr + src_stride; do { uint8 a0 = (s[0] * 3 + s[1] * 1 + 2) >> 2; uint8 a1 = (s[1] * 1 + s[2] * 1 + 1) >> 1; uint8 a2 = (s[2] * 1 + s[3] * 3 + 2) >> 2; uint8 b0 = (t[0] * 3 + t[1] * 1 + 2) >> 2; uint8 b1 = (t[1] * 1 + t[2] * 1 + 1) >> 1; uint8 b2 = (t[2] * 1 + t[3] * 3 + 2) >> 2; d[0] = (a0 * 3 + b0 + 2) >> 2; d[1] = (a1 * 3 + b1 + 2) >> 2; d[2] = (a2 * 3 + b2 + 2) >> 2; d += 3; s += 4; t += 4; } while (d < dend); } // Filter rows 1 and 2 together, 1 : 1 static void ScaleRowDown34_1_Int_C(const uint8* src_ptr, int src_stride, uint8* d, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); uint8* dend = d + dst_width; const uint8* s = src_ptr; const uint8* t = src_ptr + src_stride; do { uint8 a0 = (s[0] * 3 + s[1] * 1 + 2) >> 2; uint8 a1 = (s[1] * 1 + s[2] * 1 + 1) >> 1; uint8 a2 = (s[2] * 1 + s[3] * 3 + 2) >> 2; uint8 b0 = (t[0] * 3 + t[1] * 1 + 2) >> 2; uint8 b1 = (t[1] * 1 + t[2] * 1 + 1) >> 1; uint8 b2 = (t[2] * 1 + t[3] * 3 + 2) >> 2; d[0] = (a0 + b0 + 1) >> 1; d[1] = (a1 + b1 + 1) >> 1; d[2] = (a2 + b2 + 1) >> 1; d += 3; s += 4; t += 4; } while (d < dend); } #if defined(HAS_SCALEFILTERROWS_SSE2) // Filter row to 3/4 static void ScaleFilterCols34_C(uint8* dst_ptr, const uint8* src_ptr, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); uint8* dend = dst_ptr + dst_width; const uint8* s = src_ptr; do { dst_ptr[0] = (s[0] * 3 + s[1] * 1 + 2) >> 2; dst_ptr[1] = (s[1] * 1 + s[2] * 1 + 1) >> 1; dst_ptr[2] = (s[2] * 1 + s[3] * 3 + 2) >> 2; dst_ptr += 3; s += 4; } while (dst_ptr < dend); } #endif static void ScaleFilterCols_C(uint8* dst_ptr, const uint8* src_ptr, int dst_width, int dx) { int x = 0; for (int j = 0; j < dst_width; ++j) { int xi = x >> 16; int xf1 = x & 0xffff; int xf0 = 65536 - xf1; *dst_ptr++ = (src_ptr[xi] * xf0 + src_ptr[xi + 1] * xf1) >> 16; x += dx; } } static const int kMaxInputWidth = 2560; #if defined(HAS_SCALEFILTERROWS_SSE2) #define HAS_SCALEROWDOWN34_SSE2 // Filter rows 0 and 1 together, 3 : 1 static void ScaleRowDown34_0_Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); ALIGN16(uint8 row[kMaxInputWidth]); ScaleFilterRows_SSE2(row, src_ptr, src_stride, dst_width * 4 / 3, 256 / 4); ScaleFilterCols34_C(dst_ptr, row, dst_width); } // Filter rows 1 and 2 together, 1 : 1 static void ScaleRowDown34_1_Int_SSE2(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); ALIGN16(uint8 row[kMaxInputWidth]); ScaleFilterRows_SSE2(row, src_ptr, src_stride, dst_width * 4 / 3, 256 / 2); ScaleFilterCols34_C(dst_ptr, row, dst_width); } #endif static void ScaleRowDown38_C(const uint8* src_ptr, int, uint8* dst, int dst_width) { assert(dst_width % 3 == 0); for (int x = 0; x < dst_width; x += 3) { dst[0] = src_ptr[0]; dst[1] = src_ptr[3]; dst[2] = src_ptr[6]; dst += 3; src_ptr += 8; } } // 8x3 -> 3x1 static void ScaleRowDown38_3_Int_C(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); for (int i = 0; i < dst_width; i+=3) { dst_ptr[0] = (src_ptr[0] + src_ptr[1] + src_ptr[2] + src_ptr[src_stride + 0] + src_ptr[src_stride + 1] + src_ptr[src_stride + 2] + src_ptr[src_stride * 2 + 0] + src_ptr[src_stride * 2 + 1] + src_ptr[src_stride * 2 + 2]) * (65536 / 9) >> 16; dst_ptr[1] = (src_ptr[3] + src_ptr[4] + src_ptr[5] + src_ptr[src_stride + 3] + src_ptr[src_stride + 4] + src_ptr[src_stride + 5] + src_ptr[src_stride * 2 + 3] + src_ptr[src_stride * 2 + 4] + src_ptr[src_stride * 2 + 5]) * (65536 / 9) >> 16; dst_ptr[2] = (src_ptr[6] + src_ptr[7] + src_ptr[src_stride + 6] + src_ptr[src_stride + 7] + src_ptr[src_stride * 2 + 6] + src_ptr[src_stride * 2 + 7]) * (65536 / 6) >> 16; src_ptr += 8; dst_ptr += 3; } } // 8x2 -> 3x1 static void ScaleRowDown38_2_Int_C(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width) { assert((dst_width % 3 == 0) && (dst_width > 0)); for (int i = 0; i < dst_width; i+=3) { dst_ptr[0] = (src_ptr[0] + src_ptr[1] + src_ptr[2] + src_ptr[src_stride + 0] + src_ptr[src_stride + 1] + src_ptr[src_stride + 2]) * (65536 / 6) >> 16; dst_ptr[1] = (src_ptr[3] + src_ptr[4] + src_ptr[5] + src_ptr[src_stride + 3] + src_ptr[src_stride + 4] + src_ptr[src_stride + 5]) * (65536 / 6) >> 16; dst_ptr[2] = (src_ptr[6] + src_ptr[7] + src_ptr[src_stride + 6] + src_ptr[src_stride + 7]) * (65536 / 4) >> 16; src_ptr += 8; dst_ptr += 3; } } // C version 8x2 -> 8x1 static void ScaleFilterRows_C(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction) { assert(dst_width > 0); int y1_fraction = source_y_fraction; int y0_fraction = 256 - y1_fraction; const uint8* src_ptr1 = src_ptr + src_stride; uint8* end = dst_ptr + dst_width; do { dst_ptr[0] = (src_ptr[0] * y0_fraction + src_ptr1[0] * y1_fraction) >> 8; dst_ptr[1] = (src_ptr[1] * y0_fraction + src_ptr1[1] * y1_fraction) >> 8; dst_ptr[2] = (src_ptr[2] * y0_fraction + src_ptr1[2] * y1_fraction) >> 8; dst_ptr[3] = (src_ptr[3] * y0_fraction + src_ptr1[3] * y1_fraction) >> 8; dst_ptr[4] = (src_ptr[4] * y0_fraction + src_ptr1[4] * y1_fraction) >> 8; dst_ptr[5] = (src_ptr[5] * y0_fraction + src_ptr1[5] * y1_fraction) >> 8; dst_ptr[6] = (src_ptr[6] * y0_fraction + src_ptr1[6] * y1_fraction) >> 8; dst_ptr[7] = (src_ptr[7] * y0_fraction + src_ptr1[7] * y1_fraction) >> 8; src_ptr += 8; src_ptr1 += 8; dst_ptr += 8; } while (dst_ptr < end); dst_ptr[0] = dst_ptr[-1]; } void ScaleAddRows_C(const uint8* src_ptr, int src_stride, uint16* dst_ptr, int src_width, int src_height) { assert(src_width > 0); assert(src_height > 0); for (int x = 0; x < src_width; ++x) { const uint8* s = src_ptr + x; int sum = 0; for (int y = 0; y < src_height; ++y) { sum += s[0]; s += src_stride; } dst_ptr[x] = sum; } } /** * Scale plane, 1/2 * * This is an optimized version for scaling down a plane to 1/2 of * its original size. * */ static void ScalePlaneDown2(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { assert(src_width % 2 == 0); assert(src_height % 2 == 0); void (*ScaleRowDown2)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); #if defined(HAS_SCALEROWDOWN2_NEON) if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON) && (dst_width % 16 == 0) && (src_stride % 16 == 0) && (dst_stride % 16 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 16)) { ScaleRowDown2 = filtering ? ScaleRowDown2Int_NEON : ScaleRowDown2_NEON; } else #endif #if defined(HAS_SCALEROWDOWN2_SSE2) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) && (dst_width % 16 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 16)) { ScaleRowDown2 = filtering ? ScaleRowDown2Int_SSE2 : ScaleRowDown2_SSE2; } else #endif { ScaleRowDown2 = filtering ? ScaleRowDown2Int_C : ScaleRowDown2_C; } for (int y = 0; y < dst_height; ++y) { ScaleRowDown2(src_ptr, src_stride, dst_ptr, dst_width); src_ptr += (src_stride << 1); dst_ptr += dst_stride; } } /** * Scale plane, 1/4 * * This is an optimized version for scaling down a plane to 1/4 of * its original size. */ static void ScalePlaneDown4(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { assert(src_width % 4 == 0); assert(src_height % 4 == 0); void (*ScaleRowDown4)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); #if defined(HAS_SCALEROWDOWN4_NEON) if (libyuv::TestCpuFlag(libyuv::kCpuHasNEON) && (dst_width % 2 == 0) && (src_stride % 8 == 0) && IS_ALIGNED(src_ptr, 8)) { ScaleRowDown4 = filtering ? ScaleRowDown4Int_NEON : ScaleRowDown4_NEON; } else #endif #if defined(HAS_SCALEROWDOWN4_SSE2) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) && (dst_width % 8 == 0) && (src_stride % 16 == 0) && (dst_stride % 8 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 8)) { ScaleRowDown4 = filtering ? ScaleRowDown4Int_SSE2 : ScaleRowDown4_SSE2; } else #endif { ScaleRowDown4 = filtering ? ScaleRowDown4Int_C : ScaleRowDown4_C; } for (int y = 0; y < dst_height; ++y) { ScaleRowDown4(src_ptr, src_stride, dst_ptr, dst_width); src_ptr += (src_stride << 2); dst_ptr += dst_stride; } } /** * Scale plane, 1/8 * * This is an optimized version for scaling down a plane to 1/8 * of its original size. * */ static void ScalePlaneDown8(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { assert(src_width % 8 == 0); assert(src_height % 8 == 0); void (*ScaleRowDown8)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); #if defined(HAS_SCALEROWDOWN8_SSE2) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) && (dst_width % 16 == 0) && dst_width <= kMaxOutputWidth && (src_stride % 16 == 0) && (dst_stride % 16 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 16)) { ScaleRowDown8 = filtering ? ScaleRowDown8Int_SSE2 : ScaleRowDown8_SSE2; } else #endif { ScaleRowDown8 = filtering && (dst_width <= kMaxOutputWidth) ? ScaleRowDown8Int_C : ScaleRowDown8_C; } for (int y = 0; y < dst_height; ++y) { ScaleRowDown8(src_ptr, src_stride, dst_ptr, dst_width); src_ptr += (src_stride << 3); dst_ptr += dst_stride; } } /** * Scale plane down, 3/4 * * Provided by Frank Barchard (fbarchard@google.com) * */ static void ScalePlaneDown34(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { assert(dst_width % 3 == 0); void (*ScaleRowDown34_0)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); void (*ScaleRowDown34_1)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); #if defined(HAS_SCALEROWDOWN34_SSSE3) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSSE3) && (dst_width % 24 == 0) && (src_stride % 16 == 0) && (dst_stride % 8 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 8)) { if (!filtering) { ScaleRowDown34_0 = ScaleRowDown34_SSSE3; ScaleRowDown34_1 = ScaleRowDown34_SSSE3; } else { ScaleRowDown34_0 = ScaleRowDown34_0_Int_SSSE3; ScaleRowDown34_1 = ScaleRowDown34_1_Int_SSSE3; } } else #endif #if defined(HAS_SCALEROWDOWN34_SSE2) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) && (dst_width % 24 == 0) && (src_stride % 16 == 0) && (dst_stride % 8 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 8) && filtering) { ScaleRowDown34_0 = ScaleRowDown34_0_Int_SSE2; ScaleRowDown34_1 = ScaleRowDown34_1_Int_SSE2; } else #endif { if (!filtering) { ScaleRowDown34_0 = ScaleRowDown34_C; ScaleRowDown34_1 = ScaleRowDown34_C; } else { ScaleRowDown34_0 = ScaleRowDown34_0_Int_C; ScaleRowDown34_1 = ScaleRowDown34_1_Int_C; } } int src_row = 0; for (int y = 0; y < dst_height; ++y) { switch (src_row) { case 0: ScaleRowDown34_0(src_ptr, src_stride, dst_ptr, dst_width); break; case 1: ScaleRowDown34_1(src_ptr, src_stride, dst_ptr, dst_width); break; case 2: ScaleRowDown34_0(src_ptr + src_stride, -src_stride, dst_ptr, dst_width); break; } ++src_row; src_ptr += src_stride; dst_ptr += dst_stride; if (src_row >= 3) { src_ptr += src_stride; src_row = 0; } } } /** * Scale plane, 3/8 * * This is an optimized version for scaling down a plane to 3/8 * of its original size. * * Reduces 16x3 to 6x1 */ static void ScalePlaneDown38(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { assert(dst_width % 3 == 0); void (*ScaleRowDown38_3)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); void (*ScaleRowDown38_2)(const uint8* src_ptr, int src_stride, uint8* dst_ptr, int dst_width); #if defined(HAS_SCALEROWDOWN38_SSSE3) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSSE3) && (dst_width % 24 == 0) && (src_stride % 16 == 0) && (dst_stride % 8 == 0) && IS_ALIGNED(src_ptr, 16) && IS_ALIGNED(dst_ptr, 8)) { if (!filtering) { ScaleRowDown38_3 = ScaleRowDown38_SSSE3; ScaleRowDown38_2 = ScaleRowDown38_SSSE3; } else { ScaleRowDown38_3 = ScaleRowDown38_3_Int_SSSE3; ScaleRowDown38_2 = ScaleRowDown38_2_Int_SSSE3; } } else #endif { if (!filtering) { ScaleRowDown38_3 = ScaleRowDown38_C; ScaleRowDown38_2 = ScaleRowDown38_C; } else { ScaleRowDown38_3 = ScaleRowDown38_3_Int_C; ScaleRowDown38_2 = ScaleRowDown38_2_Int_C; } } int src_row = 0; for (int y = 0; y < dst_height; ++y) { switch (src_row) { case 0: case 1: ScaleRowDown38_3(src_ptr, src_stride, dst_ptr, dst_width); src_ptr += src_stride * 3; ++src_row; break; case 2: ScaleRowDown38_2(src_ptr, src_stride, dst_ptr, dst_width); src_ptr += src_stride * 2; src_row = 0; break; } dst_ptr += dst_stride; } } inline static uint32 SumBox(int iboxwidth, int iboxheight, int src_stride, const uint8* src_ptr) { assert(iboxwidth > 0); assert(iboxheight > 0); uint32 sum = 0u; for (int y = 0; y < iboxheight; ++y) { for (int x = 0; x < iboxwidth; ++x) { sum += src_ptr[x]; } src_ptr += src_stride; } return sum; } static void ScalePlaneBoxRow(int dst_width, int boxheight, int dx, int src_stride, const uint8* src_ptr, uint8* dst_ptr) { int x = 0; for (int i = 0; i < dst_width; ++i) { int ix = x >> 16; x += dx; int boxwidth = (x >> 16) - ix; *dst_ptr++ = SumBox(boxwidth, boxheight, src_stride, src_ptr + ix) / (boxwidth * boxheight); } } inline static uint32 SumPixels(int iboxwidth, const uint16* src_ptr) { assert(iboxwidth > 0); uint32 sum = 0u; for (int x = 0; x < iboxwidth; ++x) { sum += src_ptr[x]; } return sum; } static void ScaleAddCols2_C(int dst_width, int boxheight, int dx, const uint16* src_ptr, uint8* dst_ptr) { int scaletbl[2]; int minboxwidth = (dx >> 16); scaletbl[0] = 65536 / (minboxwidth * boxheight); scaletbl[1] = 65536 / ((minboxwidth + 1) * boxheight); int *scaleptr = scaletbl - minboxwidth; int x = 0; for (int i = 0; i < dst_width; ++i) { int ix = x >> 16; x += dx; int boxwidth = (x >> 16) - ix; *dst_ptr++ = SumPixels(boxwidth, src_ptr + ix) * scaleptr[boxwidth] >> 16; } } static void ScaleAddCols1_C(int dst_width, int boxheight, int dx, const uint16* src_ptr, uint8* dst_ptr) { int boxwidth = (dx >> 16); int scaleval = 65536 / (boxwidth * boxheight); int x = 0; for (int i = 0; i < dst_width; ++i) { *dst_ptr++ = SumPixels(boxwidth, src_ptr + x) * scaleval >> 16; x += boxwidth; } } /** * Scale plane down to any dimensions, with interpolation. * (boxfilter). * * Same method as SimpleScale, which is fixed point, outputting * one pixel of destination using fixed point (16.16) to step * through source, sampling a box of pixel with simple * averaging. */ static void ScalePlaneBox(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr) { assert(dst_width > 0); assert(dst_height > 0); int dy = (src_height << 16) / dst_height; int dx = (src_width << 16) / dst_width; if ((src_width % 16 != 0) || (src_width > kMaxInputWidth) || dst_height * 2 > src_height) { uint8* dst = dst_ptr; int dy = (src_height << 16) / dst_height; int dx = (src_width << 16) / dst_width; int y = 0; for (int j = 0; j < dst_height; ++j) { int iy = y >> 16; const uint8* const src = src_ptr + iy * src_stride; y += dy; if (y > (src_height << 16)) { y = (src_height << 16); } int boxheight = (y >> 16) - iy; ScalePlaneBoxRow(dst_width, boxheight, dx, src_stride, src, dst); dst += dst_stride; } } else { ALIGN16(uint16 row[kMaxInputWidth]); void (*ScaleAddRows)(const uint8* src_ptr, int src_stride, uint16* dst_ptr, int src_width, int src_height); void (*ScaleAddCols)(int dst_width, int boxheight, int dx, const uint16* src_ptr, uint8* dst_ptr); #if defined(HAS_SCALEADDROWS_SSE2) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) && (src_stride % 16 == 0) && IS_ALIGNED(src_ptr, 16) && (src_width % 16) == 0) { ScaleAddRows = ScaleAddRows_SSE2; } else #endif { ScaleAddRows = ScaleAddRows_C; } if (dx & 0xffff) { ScaleAddCols = ScaleAddCols2_C; } else { ScaleAddCols = ScaleAddCols1_C; } int y = 0; for (int j = 0; j < dst_height; ++j) { int iy = y >> 16; const uint8* const src = src_ptr + iy * src_stride; y += dy; if (y > (src_height << 16)) { y = (src_height << 16); } int boxheight = (y >> 16) - iy; ScaleAddRows(src, src_stride, row, src_width, boxheight); ScaleAddCols(dst_width, boxheight, dx, row, dst_ptr); dst_ptr += dst_stride; } } } /** * Scale plane to/from any dimensions, with interpolation. */ static void ScalePlaneBilinearSimple(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr) { uint8* dst = dst_ptr; int dx = (src_width << 16) / dst_width; int dy = (src_height << 16) / dst_height; int maxx = ((src_width - 1) << 16) - 1; int maxy = ((src_height - 1) << 16) - 1; int y = (dst_height < src_height) ? 32768 : (src_height << 16) / dst_height - 32768; for (int i = 0; i < dst_height; ++i) { int cy = (y < 0) ? 0 : y; int yi = cy >> 16; int yf = cy & 0xffff; const uint8* const src = src_ptr + yi * src_stride; int x = (dst_width < src_width) ? 32768 : (src_width << 16) / dst_width - 32768; for (int j = 0; j < dst_width; ++j) { int cx = (x < 0) ? 0 : x; int xi = cx >> 16; int xf = cx & 0xffff; int r0 = (src[xi] * (65536 - xf) + src[xi + 1] * xf) >> 16; int r1 = (src[xi + src_stride] * (65536 - xf) + src[xi + src_stride + 1] * xf) >> 16; *dst++ = (r0 * (65536 - yf) + r1 * yf) >> 16; x += dx; if (x > maxx) x = maxx; } dst += dst_stride - dst_width; y += dy; if (y > maxy) y = maxy; } } /** * Scale plane to/from any dimensions, with bilinear * interpolation. */ static void ScalePlaneBilinear(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr) { assert(dst_width > 0); assert(dst_height > 0); int dy = (src_height << 16) / dst_height; int dx = (src_width << 16) / dst_width; if ((src_width % 8 != 0) || (src_width > kMaxInputWidth)) { ScalePlaneBilinearSimple(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src_ptr, dst_ptr); } else { ALIGN16(uint8 row[kMaxInputWidth + 1]); void (*ScaleFilterRows)(uint8* dst_ptr, const uint8* src_ptr, int src_stride, int dst_width, int source_y_fraction); void (*ScaleFilterCols)(uint8* dst_ptr, const uint8* src_ptr, int dst_width, int dx); #if defined(HAS_SCALEFILTERROWS_SSSE3) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSSE3) && (src_stride % 16 == 0) && IS_ALIGNED(src_ptr, 16) && (src_width % 16) == 0) { ScaleFilterRows = ScaleFilterRows_SSSE3; } else #endif #if defined(HAS_SCALEFILTERROWS_SSE2) if (libyuv::TestCpuFlag(libyuv::kCpuHasSSE2) && (src_stride % 16 == 0) && IS_ALIGNED(src_ptr, 16) && (src_width % 16) == 0) { ScaleFilterRows = ScaleFilterRows_SSE2; } else #endif { ScaleFilterRows = ScaleFilterRows_C; } ScaleFilterCols = ScaleFilterCols_C; int y = 0; int maxy = ((src_height - 1) << 16) - 1; // max is filter of last 2 rows. for (int j = 0; j < dst_height; ++j) { int iy = y >> 16; int fy = (y >> 8) & 255; const uint8* const src = src_ptr + iy * src_stride; ScaleFilterRows(row, src, src_stride, src_width, fy); ScaleFilterCols(dst_ptr, row, dst_width, dx); dst_ptr += dst_stride; y += dy; if (y > maxy) { y = maxy; } } } } /** * Scale plane to/from any dimensions, without interpolation. * Fixed point math is used for performance: The upper 16 bits * of x and dx is the integer part of the source position and * the lower 16 bits are the fixed decimal part. */ static void ScalePlaneSimple(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr) { uint8* dst = dst_ptr; int dx = (src_width << 16) / dst_width; for (int y = 0; y < dst_height; ++y) { const uint8* const src = src_ptr + (y * src_height / dst_height) * src_stride; // TODO(fbarchard): Round X coordinate by setting x=0x8000. int x = 0; for (int i = 0; i < dst_width; ++i) { *dst++ = src[x >> 16]; x += dx; } dst += dst_stride - dst_width; } } /** * Scale plane to/from any dimensions. */ static void ScalePlaneAnySize(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { if (!filtering) { ScalePlaneSimple(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src_ptr, dst_ptr); } else { // fall back to non-optimized version ScalePlaneBilinear(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src_ptr, dst_ptr); } } /** * Scale plane down, any size * * This is an optimized version for scaling down a plane to any size. * The current implementation is ~10 times faster compared to the * reference implementation for e.g. XGA->LowResPAL * */ static void ScalePlaneDown(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr, FilterMode filtering) { if (!filtering) { ScalePlaneSimple(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src_ptr, dst_ptr); } else if (filtering == kFilterBilinear || src_height * 2 > dst_height) { // between 1/2x and 1x use bilinear ScalePlaneBilinear(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src_ptr, dst_ptr); } else { ScalePlaneBox(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src_ptr, dst_ptr); } } /** * Copy plane, no scaling * * This simply copies the given plane without scaling. * The current implementation is ~115 times faster * compared to the reference implementation. * */ static void CopyPlane(int src_width, int src_height, int dst_width, int dst_height, int src_stride, int dst_stride, const uint8* src_ptr, uint8* dst_ptr) { if (src_stride == src_width && dst_stride == dst_width) { // All contiguous, so can use REALLY fast path. memcpy(dst_ptr, src_ptr, src_width * src_height); } else { // Not all contiguous; must copy scanlines individually const uint8* src = src_ptr; uint8* dst = dst_ptr; for (int i = 0; i < src_height; ++i) { memcpy(dst, src, src_width); dst += dst_stride; src += src_stride; } } } static void ScalePlane(const uint8* src, int src_stride, int src_width, int src_height, uint8* dst, int dst_stride, int dst_width, int dst_height, FilterMode filtering, bool use_ref) { // Use specialized scales to improve performance for common resolutions. // For example, all the 1/2 scalings will use ScalePlaneDown2() if (dst_width == src_width && dst_height == src_height) { // Straight copy. CopyPlane(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst); } else if (dst_width <= src_width && dst_height <= src_height) { // Scale down. if (use_ref) { // For testing, allow the optimized versions to be disabled. ScalePlaneDown(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } else if (4 * dst_width == 3 * src_width && 4 * dst_height == 3 * src_height) { // optimized, 3/4 ScalePlaneDown34(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } else if (2 * dst_width == src_width && 2 * dst_height == src_height) { // optimized, 1/2 ScalePlaneDown2(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); // 3/8 rounded up for odd sized chroma height. } else if (8 * dst_width == 3 * src_width && dst_height == ((src_height * 3 + 7) / 8)) { // optimized, 3/8 ScalePlaneDown38(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } else if (4 * dst_width == src_width && 4 * dst_height == src_height) { // optimized, 1/4 ScalePlaneDown4(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } else if (8 * dst_width == src_width && 8 * dst_height == src_height) { // optimized, 1/8 ScalePlaneDown8(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } else { // Arbitrary downsample ScalePlaneDown(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } } else { // Arbitrary scale up and/or down. ScalePlaneAnySize(src_width, src_height, dst_width, dst_height, src_stride, dst_stride, src, dst, filtering); } } /** * Scale a plane. * * This function in turn calls a scaling function * suitable for handling the desired resolutions. * */ int I420Scale(const uint8* src_y, int src_stride_y, const uint8* src_u, int src_stride_u, const uint8* src_v, int src_stride_v, int src_width, int src_height, uint8* dst_y, int dst_stride_y, uint8* dst_u, int dst_stride_u, uint8* dst_v, int dst_stride_v, int dst_width, int dst_height, FilterMode filtering) { if (!src_y || !src_u || !src_v || src_width <= 0 || src_height == 0 || !dst_y || !dst_u || !dst_v || dst_width <= 0 || dst_height <= 0) { return -1; } // Negative height means invert the image. if (src_height < 0) { src_height = -src_height; int halfheight = (src_height + 1) >> 1; src_y = src_y + (src_height - 1) * src_stride_y; src_u = src_u + (halfheight - 1) * src_stride_u; src_v = src_v + (halfheight - 1) * src_stride_v; src_stride_y = -src_stride_y; src_stride_u = -src_stride_u; src_stride_v = -src_stride_v; } int halfsrc_width = (src_width + 1) >> 1; int halfsrc_height = (src_height + 1) >> 1; int halfdst_width = (dst_width + 1) >> 1; int halfoheight = (dst_height + 1) >> 1; ScalePlane(src_y, src_stride_y, src_width, src_height, dst_y, dst_stride_y, dst_width, dst_height, filtering, use_reference_impl_); ScalePlane(src_u, src_stride_u, halfsrc_width, halfsrc_height, dst_u, dst_stride_u, halfdst_width, halfoheight, filtering, use_reference_impl_); ScalePlane(src_v, src_stride_v, halfsrc_width, halfsrc_height, dst_v, dst_stride_v, halfdst_width, halfoheight, filtering, use_reference_impl_); return 0; } int Scale(const uint8* src_y, const uint8* src_u, const uint8* src_v, int src_stride_y, int src_stride_u, int src_stride_v, int src_width, int src_height, uint8* dst_y, uint8* dst_u, uint8* dst_v, int dst_stride_y, int dst_stride_u, int dst_stride_v, int dst_width, int dst_height, bool interpolate) { if (!src_y || !src_u || !src_v || src_width <= 0 || src_height == 0 || !dst_y || !dst_u || !dst_v || dst_width <= 0 || dst_height <= 0) { return -1; } // Negative height means invert the image. if (src_height < 0) { src_height = -src_height; int halfheight = (src_height + 1) >> 1; src_y = src_y + (src_height - 1) * src_stride_y; src_u = src_u + (halfheight - 1) * src_stride_u; src_v = src_v + (halfheight - 1) * src_stride_v; src_stride_y = -src_stride_y; src_stride_u = -src_stride_u; src_stride_v = -src_stride_v; } int halfsrc_width = (src_width + 1) >> 1; int halfsrc_height = (src_height + 1) >> 1; int halfdst_width = (dst_width + 1) >> 1; int halfoheight = (dst_height + 1) >> 1; FilterMode filtering = interpolate ? kFilterBox : kFilterNone; ScalePlane(src_y, src_stride_y, src_width, src_height, dst_y, dst_stride_y, dst_width, dst_height, filtering, use_reference_impl_); ScalePlane(src_u, src_stride_u, halfsrc_width, halfsrc_height, dst_u, dst_stride_u, halfdst_width, halfoheight, filtering, use_reference_impl_); ScalePlane(src_v, src_stride_v, halfsrc_width, halfsrc_height, dst_v, dst_stride_v, halfdst_width, halfoheight, filtering, use_reference_impl_); return 0; } int Scale(const uint8* src, int src_width, int src_height, uint8* dst, int dst_width, int dst_height, int ooffset, bool interpolate) { if (!src || src_width <= 0 || src_height <= 0 || !dst || dst_width <= 0 || dst_height <= 0 || ooffset < 0 || ooffset >= dst_height) { return -1; } ooffset = ooffset & ~1; // chroma requires offset to multiple of 2. int halfsrc_width = (src_width + 1) >> 1; int halfsrc_height = (src_height + 1) >> 1; int halfdst_width = (dst_width + 1) >> 1; int halfoheight = (dst_height + 1) >> 1; int aheight = dst_height - ooffset * 2; // actual output height const uint8* const iyptr = src; uint8* oyptr = dst + ooffset * dst_width; const uint8* const iuptr = src + src_width * src_height; uint8* ouptr = dst + dst_width * dst_height + (ooffset >> 1) * halfdst_width; const uint8* const ivptr = src + src_width * src_height + halfsrc_width * halfsrc_height; uint8* ovptr = dst + dst_width * dst_height + halfdst_width * halfoheight + (ooffset >> 1) * halfdst_width; return Scale(iyptr, iuptr, ivptr, src_width, halfsrc_width, halfsrc_width, src_width, src_height, oyptr, ouptr, ovptr, dst_width, halfdst_width, halfdst_width, dst_width, aheight, interpolate); } } // namespace libyuv