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554 lines
19 KiB
C++
554 lines
19 KiB
C++
/*
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* Copyright 2011 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "libyuv/format_conversion.h"
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#include "libyuv/basic_types.h"
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#include "libyuv/cpu_id.h"
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#include "libyuv/video_common.h"
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#include "libyuv/row.h"
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#ifdef __cplusplus
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namespace libyuv {
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extern "C" {
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#endif
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// generate a selector mask useful for pshufb
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static uint32 GenerateSelector(int select0, int select1) {
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return (uint32)(select0) |
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(uint32)((select1 + 4) << 8) |
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(uint32)((select0 + 8) << 16) |
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(uint32)((select1 + 12) << 24);
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}
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static int MakeSelectors(const int blue_index,
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const int green_index,
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const int red_index,
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uint32 dst_fourcc_bayer,
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uint32* index_map) {
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// Now build a lookup table containing the indices for the four pixels in each
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// 2x2 Bayer grid.
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switch (dst_fourcc_bayer) {
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case FOURCC_BGGR:
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index_map[0] = GenerateSelector(blue_index, green_index);
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index_map[1] = GenerateSelector(green_index, red_index);
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break;
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case FOURCC_GBRG:
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index_map[0] = GenerateSelector(green_index, blue_index);
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index_map[1] = GenerateSelector(red_index, green_index);
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break;
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case FOURCC_RGGB:
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index_map[0] = GenerateSelector(red_index, green_index);
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index_map[1] = GenerateSelector(green_index, blue_index);
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break;
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case FOURCC_GRBG:
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index_map[0] = GenerateSelector(green_index, red_index);
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index_map[1] = GenerateSelector(blue_index, green_index);
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break;
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default:
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return -1; // Bad FourCC
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}
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return 0;
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}
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// Converts 32 bit ARGB to Bayer RGB formats.
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LIBYUV_API
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int ARGBToBayer(const uint8* src_argb, int src_stride_argb,
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uint8* dst_bayer, int dst_stride_bayer,
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int width, int height,
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uint32 dst_fourcc_bayer) {
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int y;
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const int blue_index = 0; // Offsets for ARGB format
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const int green_index = 1;
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const int red_index = 2;
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uint32 index_map[2];
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void (*ARGBToBayerRow)(const uint8* src_argb, uint8* dst_bayer,
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uint32 selector, int pix) = ARGBToBayerRow_C;
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if (height < 0) {
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height = -height;
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src_argb = src_argb + (height - 1) * src_stride_argb;
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src_stride_argb = -src_stride_argb;
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}
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#if defined(HAS_ARGBTOBAYERROW_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3) && width >= 8 &&
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IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride_argb, 16)) {
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ARGBToBayerRow = ARGBToBayerRow_Any_SSSE3;
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if (IS_ALIGNED(width, 8)) {
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ARGBToBayerRow = ARGBToBayerRow_SSSE3;
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}
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}
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#elif defined(HAS_ARGBTOBAYERROW_NEON)
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if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
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ARGBToBayerRow = ARGBToBayerRow_Any_NEON;
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if (IS_ALIGNED(width, 8)) {
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ARGBToBayerRow = ARGBToBayerRow_NEON;
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}
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}
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#endif
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if (MakeSelectors(blue_index, green_index, red_index,
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dst_fourcc_bayer, index_map)) {
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return -1; // Bad FourCC
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}
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for (y = 0; y < height; ++y) {
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ARGBToBayerRow(src_argb, dst_bayer, index_map[y & 1], width);
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src_argb += src_stride_argb;
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dst_bayer += dst_stride_bayer;
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}
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return 0;
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}
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#define AVG(a, b) (((a) + (b)) >> 1)
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static void BayerRowBG(const uint8* src_bayer0, int src_stride_bayer,
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uint8* dst_argb, int pix) {
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const uint8* src_bayer1 = src_bayer0 + src_stride_bayer;
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uint8 g = src_bayer0[1];
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uint8 r = src_bayer1[1];
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int x;
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for (x = 0; x < pix - 2; x += 2) {
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dst_argb[0] = src_bayer0[0];
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dst_argb[1] = AVG(g, src_bayer0[1]);
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dst_argb[2] = AVG(r, src_bayer1[1]);
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dst_argb[3] = 255U;
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dst_argb[4] = AVG(src_bayer0[0], src_bayer0[2]);
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dst_argb[5] = src_bayer0[1];
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dst_argb[6] = src_bayer1[1];
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dst_argb[7] = 255U;
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g = src_bayer0[1];
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r = src_bayer1[1];
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src_bayer0 += 2;
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src_bayer1 += 2;
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dst_argb += 8;
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}
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dst_argb[0] = src_bayer0[0];
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dst_argb[1] = AVG(g, src_bayer0[1]);
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dst_argb[2] = AVG(r, src_bayer1[1]);
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dst_argb[3] = 255U;
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if (!(pix & 1)) {
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dst_argb[4] = src_bayer0[0];
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dst_argb[5] = src_bayer0[1];
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dst_argb[6] = src_bayer1[1];
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dst_argb[7] = 255U;
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}
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}
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static void BayerRowRG(const uint8* src_bayer0, int src_stride_bayer,
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uint8* dst_argb, int pix) {
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const uint8* src_bayer1 = src_bayer0 + src_stride_bayer;
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uint8 g = src_bayer0[1];
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uint8 b = src_bayer1[1];
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int x;
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for (x = 0; x < pix - 2; x += 2) {
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dst_argb[0] = AVG(b, src_bayer1[1]);
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dst_argb[1] = AVG(g, src_bayer0[1]);
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dst_argb[2] = src_bayer0[0];
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dst_argb[3] = 255U;
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dst_argb[4] = src_bayer1[1];
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dst_argb[5] = src_bayer0[1];
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dst_argb[6] = AVG(src_bayer0[0], src_bayer0[2]);
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dst_argb[7] = 255U;
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g = src_bayer0[1];
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b = src_bayer1[1];
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src_bayer0 += 2;
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src_bayer1 += 2;
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dst_argb += 8;
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}
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dst_argb[0] = AVG(b, src_bayer1[1]);
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dst_argb[1] = AVG(g, src_bayer0[1]);
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dst_argb[2] = src_bayer0[0];
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dst_argb[3] = 255U;
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if (!(pix & 1)) {
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dst_argb[4] = src_bayer1[1];
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dst_argb[5] = src_bayer0[1];
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dst_argb[6] = src_bayer0[0];
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dst_argb[7] = 255U;
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}
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}
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static void BayerRowGB(const uint8* src_bayer0, int src_stride_bayer,
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uint8* dst_argb, int pix) {
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const uint8* src_bayer1 = src_bayer0 + src_stride_bayer;
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uint8 b = src_bayer0[1];
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int x;
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for (x = 0; x < pix - 2; x += 2) {
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dst_argb[0] = AVG(b, src_bayer0[1]);
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dst_argb[1] = src_bayer0[0];
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dst_argb[2] = src_bayer1[0];
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dst_argb[3] = 255U;
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dst_argb[4] = src_bayer0[1];
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dst_argb[5] = AVG(src_bayer0[0], src_bayer0[2]);
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dst_argb[6] = AVG(src_bayer1[0], src_bayer1[2]);
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dst_argb[7] = 255U;
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b = src_bayer0[1];
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src_bayer0 += 2;
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src_bayer1 += 2;
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dst_argb += 8;
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}
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dst_argb[0] = AVG(b, src_bayer0[1]);
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dst_argb[1] = src_bayer0[0];
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dst_argb[2] = src_bayer1[0];
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dst_argb[3] = 255U;
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if (!(pix & 1)) {
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dst_argb[4] = src_bayer0[1];
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dst_argb[5] = src_bayer0[0];
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dst_argb[6] = src_bayer1[0];
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dst_argb[7] = 255U;
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}
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}
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static void BayerRowGR(const uint8* src_bayer0, int src_stride_bayer,
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uint8* dst_argb, int pix) {
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const uint8* src_bayer1 = src_bayer0 + src_stride_bayer;
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uint8 r = src_bayer0[1];
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int x;
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for (x = 0; x < pix - 2; x += 2) {
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dst_argb[0] = src_bayer1[0];
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dst_argb[1] = src_bayer0[0];
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dst_argb[2] = AVG(r, src_bayer0[1]);
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dst_argb[3] = 255U;
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dst_argb[4] = AVG(src_bayer1[0], src_bayer1[2]);
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dst_argb[5] = AVG(src_bayer0[0], src_bayer0[2]);
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dst_argb[6] = src_bayer0[1];
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dst_argb[7] = 255U;
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r = src_bayer0[1];
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src_bayer0 += 2;
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src_bayer1 += 2;
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dst_argb += 8;
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}
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dst_argb[0] = src_bayer1[0];
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dst_argb[1] = src_bayer0[0];
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dst_argb[2] = AVG(r, src_bayer0[1]);
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dst_argb[3] = 255U;
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if (!(pix & 1)) {
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dst_argb[4] = src_bayer1[0];
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dst_argb[5] = src_bayer0[0];
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dst_argb[6] = src_bayer0[1];
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dst_argb[7] = 255U;
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}
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}
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// Converts any Bayer RGB format to ARGB.
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LIBYUV_API
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int BayerToARGB(const uint8* src_bayer, int src_stride_bayer,
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uint8* dst_argb, int dst_stride_argb,
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int width, int height,
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uint32 src_fourcc_bayer) {
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int y;
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void (*BayerRow0)(const uint8* src_bayer, int src_stride_bayer,
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uint8* dst_argb, int pix);
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void (*BayerRow1)(const uint8* src_bayer, int src_stride_bayer,
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uint8* dst_argb, int pix);
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if (height < 0) {
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height = -height;
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dst_argb = dst_argb + (height - 1) * dst_stride_argb;
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dst_stride_argb = -dst_stride_argb;
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}
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switch (src_fourcc_bayer) {
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case FOURCC_BGGR:
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BayerRow0 = BayerRowBG;
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BayerRow1 = BayerRowGR;
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break;
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case FOURCC_GBRG:
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BayerRow0 = BayerRowGB;
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BayerRow1 = BayerRowRG;
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break;
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case FOURCC_GRBG:
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BayerRow0 = BayerRowGR;
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BayerRow1 = BayerRowBG;
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break;
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case FOURCC_RGGB:
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BayerRow0 = BayerRowRG;
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BayerRow1 = BayerRowGB;
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break;
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default:
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return -1; // Bad FourCC
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}
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for (y = 0; y < height - 1; y += 2) {
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BayerRow0(src_bayer, src_stride_bayer, dst_argb, width);
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BayerRow1(src_bayer + src_stride_bayer, -src_stride_bayer,
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dst_argb + dst_stride_argb, width);
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src_bayer += src_stride_bayer * 2;
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dst_argb += dst_stride_argb * 2;
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}
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if (height & 1) {
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BayerRow0(src_bayer, src_stride_bayer, dst_argb, width);
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}
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return 0;
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}
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// Converts any Bayer RGB format to ARGB.
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LIBYUV_API
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int BayerToI420(const uint8* src_bayer, int src_stride_bayer,
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uint8* dst_y, int dst_stride_y,
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uint8* dst_u, int dst_stride_u,
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uint8* dst_v, int dst_stride_v,
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int width, int height,
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uint32 src_fourcc_bayer) {
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void (*BayerRow0)(const uint8* src_bayer, int src_stride_bayer,
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uint8* dst_argb, int pix);
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void (*BayerRow1)(const uint8* src_bayer, int src_stride_bayer,
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uint8* dst_argb, int pix);
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void (*ARGBToUVRow)(const uint8* src_argb0, int src_stride_argb,
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uint8* dst_u, uint8* dst_v, int width) = ARGBToUVRow_C;
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void (*ARGBToYRow)(const uint8* src_argb, uint8* dst_y, int pix) =
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ARGBToYRow_C;
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// Negative height means invert the image.
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if (height < 0) {
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int halfheight;
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height = -height;
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halfheight = (height + 1) >> 1;
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dst_y = dst_y + (height - 1) * dst_stride_y;
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dst_u = dst_u + (halfheight - 1) * dst_stride_u;
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dst_v = dst_v + (halfheight - 1) * dst_stride_v;
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dst_stride_y = -dst_stride_y;
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dst_stride_u = -dst_stride_u;
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dst_stride_v = -dst_stride_v;
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}
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#if defined(HAS_ARGBTOYROW_SSSE3) && defined(HAS_ARGBTOUVROW_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3) && width >= 16) {
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ARGBToUVRow = ARGBToUVRow_Any_SSSE3;
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ARGBToYRow = ARGBToYRow_Any_SSSE3;
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if (IS_ALIGNED(width, 16)) {
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ARGBToYRow = ARGBToYRow_Unaligned_SSSE3;
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ARGBToUVRow = ARGBToUVRow_SSSE3;
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if (IS_ALIGNED(dst_y, 16) && IS_ALIGNED(dst_stride_y, 16)) {
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ARGBToYRow = ARGBToYRow_SSSE3;
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}
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}
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}
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#elif defined(HAS_ARGBTOYROW_NEON)
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if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
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ARGBToYRow = ARGBToYRow_Any_NEON;
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if (IS_ALIGNED(width, 8)) {
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ARGBToYRow = ARGBToYRow_NEON;
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}
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}
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#endif
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#if defined(HAS_ARGBTOUVROW_NEON)
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if (TestCpuFlag(kCpuHasNEON) && width >= 16) {
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ARGBToUVRow = ARGBToUVRow_Any_NEON;
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if (IS_ALIGNED(width, 16)) {
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ARGBToUVRow = ARGBToUVRow_NEON;
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}
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}
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#endif
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switch (src_fourcc_bayer) {
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case FOURCC_BGGR:
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BayerRow0 = BayerRowBG;
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BayerRow1 = BayerRowGR;
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break;
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case FOURCC_GBRG:
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BayerRow0 = BayerRowGB;
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BayerRow1 = BayerRowRG;
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break;
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case FOURCC_GRBG:
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BayerRow0 = BayerRowGR;
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BayerRow1 = BayerRowBG;
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break;
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case FOURCC_RGGB:
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BayerRow0 = BayerRowRG;
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BayerRow1 = BayerRowGB;
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break;
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default:
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return -1; // Bad FourCC
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}
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{
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// Allocate 2 rows of ARGB.
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const int kRowSize = (width * 4 + 15) & ~15;
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align_buffer_64(row, kRowSize * 2);
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int y;
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for (y = 0; y < height - 1; y += 2) {
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BayerRow0(src_bayer, src_stride_bayer, row, width);
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BayerRow1(src_bayer + src_stride_bayer, -src_stride_bayer,
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row + kRowSize, width);
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ARGBToUVRow(row, kRowSize, dst_u, dst_v, width);
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ARGBToYRow(row, dst_y, width);
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ARGBToYRow(row + kRowSize, dst_y + dst_stride_y, width);
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src_bayer += src_stride_bayer * 2;
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dst_y += dst_stride_y * 2;
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dst_u += dst_stride_u;
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dst_v += dst_stride_v;
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}
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if (height & 1) {
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BayerRow0(src_bayer, src_stride_bayer, row, width);
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ARGBToUVRow(row, 0, dst_u, dst_v, width);
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ARGBToYRow(row, dst_y, width);
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}
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free_aligned_buffer_64(row);
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}
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return 0;
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}
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// Convert I420 to Bayer.
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LIBYUV_API
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int I420ToBayer(const uint8* src_y, int src_stride_y,
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const uint8* src_u, int src_stride_u,
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const uint8* src_v, int src_stride_v,
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uint8* dst_bayer, int dst_stride_bayer,
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int width, int height,
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uint32 dst_fourcc_bayer) {
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void (*I422ToARGBRow)(const uint8* y_buf,
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const uint8* u_buf,
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const uint8* v_buf,
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uint8* rgb_buf,
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int width) = I422ToARGBRow_C;
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void (*ARGBToBayerRow)(const uint8* src_argb, uint8* dst_bayer,
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uint32 selector, int pix) = ARGBToBayerRow_C;
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const int blue_index = 0; // Offsets for ARGB format
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const int green_index = 1;
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const int red_index = 2;
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uint32 index_map[2];
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// Negative height means invert the image.
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if (height < 0) {
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int halfheight;
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height = -height;
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halfheight = (height + 1) >> 1;
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src_y = src_y + (height - 1) * src_stride_y;
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src_u = src_u + (halfheight - 1) * src_stride_u;
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src_v = src_v + (halfheight - 1) * src_stride_v;
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src_stride_y = -src_stride_y;
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src_stride_u = -src_stride_u;
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src_stride_v = -src_stride_v;
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}
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#if defined(HAS_I422TOARGBROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
|
|
I422ToARGBRow = I422ToARGBRow_Any_SSSE3;
|
|
if (IS_ALIGNED(width, 8)) {
|
|
I422ToARGBRow = I422ToARGBRow_SSSE3;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_I422TOARGBROW_AVX2)
|
|
if (TestCpuFlag(kCpuHasAVX2) && width >= 16) {
|
|
I422ToARGBRow = I422ToARGBRow_Any_AVX2;
|
|
if (IS_ALIGNED(width, 16)) {
|
|
I422ToARGBRow = I422ToARGBRow_AVX2;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_I422TOARGBROW_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
|
|
I422ToARGBRow = I422ToARGBRow_Any_NEON;
|
|
if (IS_ALIGNED(width, 8)) {
|
|
I422ToARGBRow = I422ToARGBRow_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
#if defined(HAS_I422TOARGBROW_MIPS_DSPR2)
|
|
if (TestCpuFlag(kCpuHasMIPS_DSPR2) && IS_ALIGNED(width, 4) &&
|
|
IS_ALIGNED(src_y, 4) && IS_ALIGNED(src_stride_y, 4) &&
|
|
IS_ALIGNED(src_u, 2) && IS_ALIGNED(src_stride_u, 2) &&
|
|
IS_ALIGNED(src_v, 2) && IS_ALIGNED(src_stride_v, 2)) {
|
|
I422ToARGBRow = I422ToARGBRow_MIPS_DSPR2;
|
|
}
|
|
#endif
|
|
|
|
#if defined(HAS_ARGBTOBAYERROW_SSSE3)
|
|
if (TestCpuFlag(kCpuHasSSSE3) && width >= 8) {
|
|
ARGBToBayerRow = ARGBToBayerRow_Any_SSSE3;
|
|
if (IS_ALIGNED(width, 8)) {
|
|
ARGBToBayerRow = ARGBToBayerRow_SSSE3;
|
|
}
|
|
}
|
|
#elif defined(HAS_ARGBTOBAYERROW_NEON)
|
|
if (TestCpuFlag(kCpuHasNEON) && width >= 8) {
|
|
ARGBToBayerRow = ARGBToBayerRow_Any_NEON;
|
|
if (IS_ALIGNED(width, 8)) {
|
|
ARGBToBayerRow = ARGBToBayerRow_NEON;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (MakeSelectors(blue_index, green_index, red_index,
|
|
dst_fourcc_bayer, index_map)) {
|
|
return -1; // Bad FourCC
|
|
}
|
|
{
|
|
// Allocate a row of ARGB.
|
|
align_buffer_64(row, width * 4);
|
|
int y;
|
|
for (y = 0; y < height; ++y) {
|
|
I422ToARGBRow(src_y, src_u, src_v, row, width);
|
|
ARGBToBayerRow(row, dst_bayer, index_map[y & 1], width);
|
|
dst_bayer += dst_stride_bayer;
|
|
src_y += src_stride_y;
|
|
if (y & 1) {
|
|
src_u += src_stride_u;
|
|
src_v += src_stride_v;
|
|
}
|
|
}
|
|
free_aligned_buffer_64(row);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define MAKEBAYERFOURCC(BAYER) \
|
|
LIBYUV_API \
|
|
int Bayer##BAYER##ToI420(const uint8* src_bayer, int src_stride_bayer, \
|
|
uint8* dst_y, int dst_stride_y, \
|
|
uint8* dst_u, int dst_stride_u, \
|
|
uint8* dst_v, int dst_stride_v, \
|
|
int width, int height) { \
|
|
return BayerToI420(src_bayer, src_stride_bayer, \
|
|
dst_y, dst_stride_y, \
|
|
dst_u, dst_stride_u, \
|
|
dst_v, dst_stride_v, \
|
|
width, height, \
|
|
FOURCC_##BAYER); \
|
|
} \
|
|
\
|
|
LIBYUV_API \
|
|
int I420ToBayer##BAYER(const uint8* src_y, int src_stride_y, \
|
|
const uint8* src_u, int src_stride_u, \
|
|
const uint8* src_v, int src_stride_v, \
|
|
uint8* dst_bayer, int dst_stride_bayer, \
|
|
int width, int height) { \
|
|
return I420ToBayer(src_y, src_stride_y, \
|
|
src_u, src_stride_u, \
|
|
src_v, src_stride_v, \
|
|
dst_bayer, dst_stride_bayer, \
|
|
width, height, \
|
|
FOURCC_##BAYER); \
|
|
} \
|
|
\
|
|
LIBYUV_API \
|
|
int ARGBToBayer##BAYER(const uint8* src_argb, int src_stride_argb, \
|
|
uint8* dst_bayer, int dst_stride_bayer, \
|
|
int width, int height) { \
|
|
return ARGBToBayer(src_argb, src_stride_argb, \
|
|
dst_bayer, dst_stride_bayer, \
|
|
width, height, \
|
|
FOURCC_##BAYER); \
|
|
} \
|
|
\
|
|
LIBYUV_API \
|
|
int Bayer##BAYER##ToARGB(const uint8* src_bayer, int src_stride_bayer, \
|
|
uint8* dst_argb, int dst_stride_argb, \
|
|
int width, int height) { \
|
|
return BayerToARGB(src_bayer, src_stride_bayer, \
|
|
dst_argb, dst_stride_argb, \
|
|
width, height, \
|
|
FOURCC_##BAYER); \
|
|
}
|
|
|
|
MAKEBAYERFOURCC(BGGR)
|
|
MAKEBAYERFOURCC(GBRG)
|
|
MAKEBAYERFOURCC(GRBG)
|
|
MAKEBAYERFOURCC(RGGB)
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
} // namespace libyuv
|
|
#endif
|