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dither.h
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dither.h
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/*! @file dither.h
* @brief
*
* @version 1.0.0
*
* (C) Copyright 2017 GoPro Inc (http://gopro.com/).
*
* Licensed under either:
* - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
* - MIT license, http://opensource.org/licenses/MIT
* at your option.
*
* 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 _DITHER_H
#define _DITHER_H
typedef struct color_matrix
{
float array[3][4]; // The last column is the offset
float scale; // Amplitude of the coefficients
// Record the color space used to fill the color matrix
COLOR_SPACE color_space;
} COLOR_MATRIX;
typedef struct color_conversion
{
int array[3][4]; // The last column is the offset
int shift; // Scale of the coefficients
int luma_offset; // Offset for video safe luma
// Record the color space used to fill the color matrix
int color_space;
} COLOR_CONVERSION;
#ifdef __cplusplus
extern "C" {
#endif
// Compute integer color conversion coefficients for the specified color space
void ComputeColorCoefficientsRGBToYUV(COLOR_CONVERSION *conversion,
int color_space);
void ComputeColorCoefficientsYUVToRGB(COLOR_CONVERSION *conversion,
int color_space);
#ifdef __cplusplus
}
#endif
#endif