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/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <assert.h>
#include <jxl/butteraugli.h>
#include "aom_dsp/butteraugli.h"
#include "aom_mem/aom_mem.h"
#include "third_party/libyuv/include/libyuv/convert_argb.h"
int aom_calc_butteraugli(const YV12_BUFFER_CONFIG *source,
const YV12_BUFFER_CONFIG *distorted, int bit_depth,
aom_matrix_coefficients_t matrix_coefficients,
aom_color_range_t color_range, float *dist_map) {
(void)bit_depth;
assert(bit_depth == 8);
const int width = source->y_crop_width;
const int height = source->y_crop_height;
const int ss_x = source->subsampling_x;
const int ss_y = source->subsampling_y;
const struct YuvConstants *yuv_constants;
if (matrix_coefficients == AOM_CICP_MC_BT_709) {
if (color_range == AOM_CR_FULL_RANGE) return 0;
yuv_constants = &kYuvH709Constants;
} else {
yuv_constants = color_range == AOM_CR_FULL_RANGE ? &kYuvJPEGConstants
: &kYuvI601Constants;
}
const int stride_argb = width * 4;
const size_t buffer_size = (size_t)height * stride_argb;
uint8_t *src_argb = (uint8_t *)aom_malloc(buffer_size);
uint8_t *distorted_argb = (uint8_t *)aom_malloc(buffer_size);
if (!src_argb || !distorted_argb) {
aom_free(src_argb);
aom_free(distorted_argb);
return 0;
}
if (ss_x == 1 && ss_y == 1) {
I420ToARGBMatrix(source->y_buffer, source->y_stride, source->u_buffer,
source->uv_stride, source->v_buffer, source->uv_stride,
src_argb, stride_argb, yuv_constants, width, height);
I420ToARGBMatrix(distorted->y_buffer, distorted->y_stride,
distorted->u_buffer, distorted->uv_stride,
distorted->v_buffer, distorted->uv_stride, distorted_argb,
stride_argb, yuv_constants, width, height);
} else if (ss_x == 1 && ss_y == 0) {
I422ToARGBMatrix(source->y_buffer, source->y_stride, source->u_buffer,
source->uv_stride, source->v_buffer, source->uv_stride,
src_argb, stride_argb, yuv_constants, width, height);
I422ToARGBMatrix(distorted->y_buffer, distorted->y_stride,
distorted->u_buffer, distorted->uv_stride,
distorted->v_buffer, distorted->uv_stride, distorted_argb,
stride_argb, yuv_constants, width, height);
} else if (ss_x == 0 && ss_y == 0) {
I444ToARGBMatrix(source->y_buffer, source->y_stride, source->u_buffer,
source->uv_stride, source->v_buffer, source->uv_stride,
src_argb, stride_argb, yuv_constants, width, height);
I444ToARGBMatrix(distorted->y_buffer, distorted->y_stride,
distorted->u_buffer, distorted->uv_stride,
distorted->v_buffer, distorted->uv_stride, distorted_argb,
stride_argb, yuv_constants, width, height);
} else {
aom_free(src_argb);
aom_free(distorted_argb);
return 0;
}
JxlPixelFormat pixel_format = { 4, JXL_TYPE_UINT8, JXL_NATIVE_ENDIAN, 0 };
JxlButteraugliApi *api = JxlButteraugliApiCreate(NULL);
JxlButteraugliApiSetHFAsymmetry(api, 0.8f);
JxlButteraugliResult *result = JxlButteraugliCompute(
api, width, height, &pixel_format, src_argb, buffer_size, &pixel_format,
distorted_argb, buffer_size);
const float *distmap = NULL;
uint32_t row_stride;
JxlButteraugliResultGetDistmap(result, &distmap, &row_stride);
if (distmap == NULL) {
JxlButteraugliApiDestroy(api);
JxlButteraugliResultDestroy(result);
aom_free(src_argb);
aom_free(distorted_argb);
return 0;
}
for (int j = 0; j < height; ++j) {
for (int i = 0; i < width; ++i) {
dist_map[j * width + i] = distmap[j * row_stride + i];
}
}
JxlButteraugliApiDestroy(api);
JxlButteraugliResultDestroy(result);
aom_free(src_argb);
aom_free(distorted_argb);
return 1;
}
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