87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Contains implemenation of framebuffer conversion routines.
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*/
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#define LOG_NDEBUG 0
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#define LOG_TAG "EmulatedCamera_Converter"
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#include <cutils/log.h>
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#include "converters.h"
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namespace android {
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void YV12ToRGB565(const void* yv12, void* rgb, int width, int height)
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{
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const int pix_total = width * height;
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uint16_t* rgb_buf = reinterpret_cast<uint16_t*>(rgb);
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const uint8_t* Y = reinterpret_cast<const uint8_t*>(yv12);
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const uint8_t* Cb_pos = Y + pix_total;
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const uint8_t* Cr_pos = Cb_pos + pix_total / 4;
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const uint8_t* Cb = Cb_pos;
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const uint8_t* Cr = Cr_pos;
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x += 2) {
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const uint8_t nCb = *Cb; Cb++;
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const uint8_t nCr = *Cr; Cr++;
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*rgb_buf = YUVToRGB565(*Y, nCb, nCr);
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Y++; rgb_buf++;
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*rgb_buf = YUVToRGB565(*Y, nCb, nCr);
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Y++; rgb_buf++;
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}
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if (y & 0x1) {
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Cb_pos = Cb;
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Cr_pos = Cr;
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} else {
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Cb = Cb_pos;
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Cr = Cr_pos;
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}
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}
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}
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void YV12ToRGB32(const void* yv12, void* rgb, int width, int height)
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{
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const int pix_total = width * height;
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uint32_t* rgb_buf = reinterpret_cast<uint32_t*>(rgb);
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const uint8_t* Y = reinterpret_cast<const uint8_t*>(yv12);
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const uint8_t* Cb_pos = Y + pix_total;
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const uint8_t* Cr_pos = Cb_pos + pix_total / 4;
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const uint8_t* Cb = Cb_pos;
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const uint8_t* Cr = Cr_pos;
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for (int y = 0; y < height; y++) {
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for (int x = 0; x < width; x += 2) {
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const uint8_t nCb = *Cb; Cb++;
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const uint8_t nCr = *Cr; Cr++;
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*rgb_buf = YUVToRGB32(*Y, nCb, nCr);
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Y++; rgb_buf++;
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*rgb_buf = YUVToRGB32(*Y, nCb, nCr);
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Y++; rgb_buf++;
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}
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if (y & 0x1) {
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Cb_pos = Cb;
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Cr_pos = Cr;
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} else {
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Cb = Cb_pos;
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Cr = Cr_pos;
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}
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}
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}
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}; /* namespace android */
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