36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
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/*
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* Copyright (C) 2012 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#ifndef IMAGE4_PARTIAL_H
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#define IMAGE4_PARTIAL_H 1
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#include <stdint.h>
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/*
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* Maximum number of bytes needed to ID an Image4 file.
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*
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* Image4 header for a large (but <4GB) file contains:
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*
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* SEQUENCE { 30 84 xx xx xx xx
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* IA5String 'IMG4' 16 04 49 4d 47 34
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* SEQUENCE { 30 84 yy yy yy yy
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* IA5String 'IM4P' 16 04 53 45 50 4f
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* IA5String 'abcd' 16 04 aa bb cc dd
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*/
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#define IMAGE4_ID_BYTES 30
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// Parse a partial buffer enough to identify and get type.
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// Return pointers can be NULL if not needed.
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int image4_get_partial(const void *buf, size_t buf_bytes,
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uint32_t *ret_type, uint32_t *ret_size);
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#endif // defined(IMAGE4_PARTIAL_H)
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