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Issue 1558093003: Odd width variation of scale down by 2 for subsampling (Closed) Base URL: https://chromium.googlesource.com/libyuv/libyuv@master
Patch Set: bump version Created 4 years, 11 months ago
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1 /* 1 /*
2 * Copyright 2011 The LibYuv Project Authors. All rights reserved. 2 * Copyright 2011 The LibYuv Project Authors. All rights reserved.
3 * 3 *
4 * Use of this source code is governed by a BSD-style license 4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source 5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found 6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may 7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree. 8 * be found in the AUTHORS file in the root of the source tree.
9 */ 9 */
10 10
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670 670
671 // Blend Y plane. 671 // Blend Y plane.
672 BlendPlane(src_y0, src_stride_y0, 672 BlendPlane(src_y0, src_stride_y0,
673 src_y1, src_stride_y1, 673 src_y1, src_stride_y1,
674 alpha, alpha_stride, 674 alpha, alpha_stride,
675 dst_y, dst_stride_y, 675 dst_y, dst_stride_y,
676 width, height); 676 width, height);
677 677
678 #if defined(HAS_BLENDPLANEROW_SSSE3) 678 #if defined(HAS_BLENDPLANEROW_SSSE3)
679 if (TestCpuFlag(kCpuHasSSSE3)) { 679 if (TestCpuFlag(kCpuHasSSSE3)) {
680 BlendPlaneRow = BlendPlaneRow_Any_SSSE3; 680 BlendPlaneRow = BlendPlaneRow_Any_SSSE3;
681 if (IS_ALIGNED(halfwidth, 8)) { 681 if (IS_ALIGNED(halfwidth, 8)) {
682 BlendPlaneRow = BlendPlaneRow_SSSE3; 682 BlendPlaneRow = BlendPlaneRow_SSSE3;
683 } 683 }
684 } 684 }
685 #endif 685 #endif
686 #if defined(HAS_BLENDPLANEROW_AVX2) 686 #if defined(HAS_BLENDPLANEROW_AVX2)
687 if (TestCpuFlag(kCpuHasAVX2)) { 687 if (TestCpuFlag(kCpuHasAVX2)) {
688 BlendPlaneRow = BlendPlaneRow_Any_AVX2; 688 BlendPlaneRow = BlendPlaneRow_Any_AVX2;
689 if (IS_ALIGNED(halfwidth, 32)) { 689 if (IS_ALIGNED(halfwidth, 32)) {
690 BlendPlaneRow = BlendPlaneRow_AVX2; 690 BlendPlaneRow = BlendPlaneRow_AVX2;
691 } 691 }
692 } 692 }
693 #endif 693 #endif
694 if (!IS_ALIGNED(width, 2)) {
695 ScaleRowDown2 = ScaleRowDown2Box_Odd_C;
696 }
694 #if defined(HAS_SCALEROWDOWN2_NEON) 697 #if defined(HAS_SCALEROWDOWN2_NEON)
695 if (TestCpuFlag(kCpuHasNEON)) { 698 if (TestCpuFlag(kCpuHasNEON)) {
696 ScaleRowDown2 = ScaleRowDown2Box_Any_NEON; 699 ScaleRowDown2 = ScaleRowDown2Box_Odd_NEON;
697 if (IS_ALIGNED(halfwidth, 16)) { 700 if (IS_ALIGNED(width, 2)) {
698 ScaleRowDown2 = ScaleRowDown2Box_NEON; 701 ScaleRowDown2 = ScaleRowDown2Box_Any_NEON;
702 if (IS_ALIGNED(halfwidth, 16)) {
703 ScaleRowDown2 = ScaleRowDown2Box_NEON;
704 }
699 } 705 }
700 } 706 }
701 #endif 707 #endif
702 #if defined(HAS_SCALEROWDOWN2_SSSE3) 708 #if defined(HAS_SCALEROWDOWN2_SSSE3)
703 if (TestCpuFlag(kCpuHasSSSE3)) { 709 if (TestCpuFlag(kCpuHasSSSE3)) {
704 ScaleRowDown2 = ScaleRowDown2Box_Any_SSSE3; 710 ScaleRowDown2 = ScaleRowDown2Box_Odd_SSSE3;
705 if (IS_ALIGNED(halfwidth, 16)) { 711 if (IS_ALIGNED(width, 2)) {
706 ScaleRowDown2 = ScaleRowDown2Box_SSSE3; 712 ScaleRowDown2 = ScaleRowDown2Box_Any_SSSE3;
713 if (IS_ALIGNED(halfwidth, 16)) {
714 ScaleRowDown2 = ScaleRowDown2Box_SSSE3;
715 }
707 } 716 }
708 } 717 }
709 #endif 718 #endif
710 #if defined(HAS_SCALEROWDOWN2_AVX2) 719 #if defined(HAS_SCALEROWDOWN2_AVX2)
711 if (TestCpuFlag(kCpuHasAVX2)) { 720 if (TestCpuFlag(kCpuHasAVX2)) {
712 ScaleRowDown2 = ScaleRowDown2Box_Any_AVX2; 721 ScaleRowDown2 = ScaleRowDown2Box_Odd_AVX2;
713 if (IS_ALIGNED(halfwidth, 32)) { 722 if (IS_ALIGNED(width, 2)) {
714 ScaleRowDown2 = ScaleRowDown2Box_AVX2; 723 ScaleRowDown2 = ScaleRowDown2Box_Any_AVX2;
724 if (IS_ALIGNED(halfwidth, 32)) {
725 ScaleRowDown2 = ScaleRowDown2Box_AVX2;
726 }
715 } 727 }
716 } 728 }
717 #endif 729 #endif
718 730
719 // Row buffer for intermediate alpha pixels. 731 // Row buffer for intermediate alpha pixels.
720 align_buffer_64(halfalpha, halfwidth); 732 align_buffer_64(halfalpha, halfwidth);
721 for (y = 0; y < height; y += 2) { 733 for (y = 0; y < height; y += 2) {
722 // last row of odd height image use 1 row of alpha instead of 2. 734 // last row of odd height image use 1 row of alpha instead of 2.
723 if (y == (height - 1)) { 735 if (y == (height - 1)) {
724 alpha_stride = 0; 736 alpha_stride = 0;
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2601 } 2613 }
2602 free_aligned_buffer_64(rows); 2614 free_aligned_buffer_64(rows);
2603 } 2615 }
2604 return 0; 2616 return 0;
2605 } 2617 }
2606 2618
2607 #ifdef __cplusplus 2619 #ifdef __cplusplus
2608 } // extern "C" 2620 } // extern "C"
2609 } // namespace libyuv 2621 } // namespace libyuv
2610 #endif 2622 #endif
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