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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef EVS_VTS_FORMATCONVERT_H
#define EVS_VTS_FORMATCONVERT_H
#include <queue>
#include <stdint.h>
namespace android {
namespace hardware {
namespace automotive {
namespace evs {
namespace common {
class Utils {
public:
// Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx/BGRx
// values. The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
// U/V array. It assumes an even width and height for the overall image, and a horizontal
// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
static void copyNV21toRGB32(unsigned width, unsigned height,
uint8_t* src,
uint32_t* dst, unsigned dstStridePixels,
bool bgrxFormat = false);
static void copyNV21toBGR32(unsigned width, unsigned height,
uint8_t* src,
uint32_t* dst, unsigned dstStridePixels);
// Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx/BGRx values.
// The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
// by another 1/2 x 1/2 V array. It assumes an even width and height for the overall image,
// and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
// and V arrays.
static void copyYV12toRGB32(unsigned width, unsigned height,
uint8_t* src,
uint32_t* dst, unsigned dstStridePixels,
bool bgrxFormat = false);
static void copyYV12toBGR32(unsigned width, unsigned height,
uint8_t* src,
uint32_t* dst, unsigned dstStridePixels);
// Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx/BGRx
// values. The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
// U/V array. It assumes an even width and height for the overall image, and a horizontal
// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
static void copyYUYVtoRGB32(unsigned width, unsigned height,
uint8_t* src, unsigned srcStrideBytes,
uint32_t* dst, unsigned dstStrideBytes,
bool bgrxFormat = false);
static void copyYUYVtoBGR32(unsigned width, unsigned height,
uint8_t* src, unsigned srcStrideBytes,
uint32_t* dst, unsigned dstStrideBytes);
// Given an simple rectangular image buffer with an integer number of bytes per pixel,
// copy the pixel values into a new rectangular buffer (potentially with a different stride).
// This is typically used to copy RGBx data into an RGBx output buffer.
static void copyMatchedInterleavedFormats(unsigned width, unsigned height,
void* src, unsigned srcStridePixels,
void* dst, unsigned dstStridePixels,
unsigned pixelSize);
private:
template<unsigned alignment>
static int align(int value);
static inline float clamp(float v, float min, float max);
static uint32_t yuvToRgbx(const unsigned char Y,
const unsigned char Uin,
const unsigned char Vin,
bool bgrxFormat = false);
};
} // namespace common
} // namespace evs
} // namespace automotive
} // namespace hardware
} // namespace android
#endif // EVS_VTS_FORMATCONVERT_H
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