2019-11-23 20:27:39 +08:00
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// Copyright 2009 Google Inc.
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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 __etc1_h__
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#define __etc1_h__
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/// @cond DO_NOT_SHOW
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#define ETC1_ENCODED_BLOCK_SIZE 8
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#define ETC1_DECODED_BLOCK_SIZE 48
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#ifndef ETC1_RGB8_OES
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2021-12-25 10:04:45 +08:00
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# define ETC1_RGB8_OES 0x8D64
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2019-11-23 20:27:39 +08:00
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#endif
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typedef unsigned char etc1_byte;
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typedef int etc1_bool;
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typedef unsigned int etc1_uint32;
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Size of a PKM header, in bytes.
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#define ETC_PKM_HEADER_SIZE 16
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// Format a PKM header
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void etc1_pkm_format_header(etc1_byte* pHeader, etc1_uint32 width, etc1_uint32 height);
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// Check if a PKM header is correctly formatted.
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etc1_bool etc1_pkm_is_valid(const etc1_byte* pHeader);
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// Read the image width from a PKM header
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etc1_uint32 etc1_pkm_get_width(const etc1_byte* pHeader);
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// Read the image height from a PKM header
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etc1_uint32 etc1_pkm_get_height(const etc1_byte* pHeader);
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#ifdef __cplusplus
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}
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#endif
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/// @endcond
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#endif
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