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97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
// Copyright 2020 Google LLC
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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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#ifndef LIBPNG_TESTS_LIBPNG_H_
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#define LIBPNG_TESTS_LIBPNG_H_
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// Defines from libpng library. The problem is that the build throws the error
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// "Duplicate functions" if #include <png.h> is added.
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#define PNG_FORMAT_FLAG_ALPHA 0x01U
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#define PNG_FORMAT_FLAG_COLOR 0x02U
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#define PNG_FORMAT_FLAG_LINEAR 0x04U
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#define PNG_FORMAT_FLAG_COLORMAP 0x08U
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#ifdef PNG_FORMAT_BGR_SUPPORTED
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#define PNG_FORMAT_FLAG_BGR 0x10U
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#endif
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#ifdef PNG_FORMAT_AFIRST_SUPPORTED
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#define PNG_FORMAT_FLAG_AFIRST 0x20U
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#endif
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#define PNG_FORMAT_FLAG_ASSOCIATED_ALPHA 0x40U
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#define PNG_FORMAT_GRAY 0
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#define PNG_FORMAT_GA PNG_FORMAT_FLAG_ALPHA
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#define PNG_FORMAT_AG (PNG_FORMAT_GA | PNG_FORMAT_FLAG_AFIRST)
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#define PNG_FORMAT_RGB PNG_FORMAT_FLAG_COLOR
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#define PNG_FORMAT_BGR (PNG_FORMAT_FLAG_COLOR | PNG_FORMAT_FLAG_BGR)
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#define PNG_FORMAT_RGBA (PNG_FORMAT_RGB | PNG_FORMAT_FLAG_ALPHA)
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#define PNG_FORMAT_ARGB (PNG_FORMAT_RGBA | PNG_FORMAT_FLAG_AFIRST)
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#define PNG_FORMAT_BGRA (PNG_FORMAT_BGR | PNG_FORMAT_FLAG_ALPHA)
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#define PNG_FORMAT_ABGR (PNG_FORMAT_BGRA | PNG_FORMAT_FLAG_AFIRST)
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#define PNG_IMAGE_VERSION 1
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#define PNG_IMAGE_PIXEL_(test, fmt) \
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(((fmt)&PNG_FORMAT_FLAG_COLORMAP) ? 1 : test(fmt))
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#define PNG_IMAGE_SAMPLE_CHANNELS(fmt) \
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(((fmt) & (PNG_FORMAT_FLAG_COLOR | PNG_FORMAT_FLAG_ALPHA)) + 1)
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#define PNG_IMAGE_PIXEL_CHANNELS(fmt) \
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PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_CHANNELS, fmt)
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#define PNG_IMAGE_ROW_STRIDE(image) \
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(PNG_IMAGE_PIXEL_CHANNELS((image).format) * (image).width)
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#define PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt) \
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((((fmt)&PNG_FORMAT_FLAG_LINEAR) >> 2) + 1)
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#define PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt) \
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PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_COMPONENT_SIZE, fmt)
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#define PNG_IMAGE_BUFFER_SIZE(image, row_stride) \
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(PNG_IMAGE_PIXEL_COMPONENT_SIZE((image).format) * (image).height * \
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(row_stride))
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#define PNG_IMAGE_SIZE(image) \
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PNG_IMAGE_BUFFER_SIZE(image, PNG_IMAGE_ROW_STRIDE(image))
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typedef uint8_t *png_bytep;
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#if UINT_MAX == 65535
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typedef unsigned int png_uint_16;
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#elif USHRT_MAX == 65535
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typedef unsigned short png_uint_16; // NOLINT(runtime/int)
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#else
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#error "libpng requires an unsigned 16-bit type"
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#endif
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#define PNG_LIBPNG_VER_STRING "1.6.38.git"
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#define PNG_COLOR_MASK_COLOR 2
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#define PNG_COLOR_MASK_ALPHA 4
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#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR)
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#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA)
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#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA
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#define PNG_FILTER_TYPE_BASE 0
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#define PNG_COMPRESSION_TYPE_BASE 0
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#define PNG_INTERLACE_NONE 0
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#endif // LIBPNG_TESTS_LIBPNG_H_
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