a87c61854e
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27430 a1c6a512-1295-4272-9138-f99709370657
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/**
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* @file bitstream.h
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* bitstream api header.
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*/
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#ifndef BITSTREAM_H
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#define BITSTREAM_H
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#include <inttypes.h>
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#include "ffmpeg_get_bits.h"
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#ifndef BUILD_STANDALONE
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#include <config.h>
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#include <system.h>
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#else
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#include <stdio.h>
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#define IBSS_ATTR
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#define ICONST_ATTR
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#define ICODE_ATTR
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#endif
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#ifndef ICODE_ATTR_FLAC
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#define ICODE_ATTR_FLAC ICODE_ATTR
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#endif
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#ifndef IBSS_ATTR_FLAC_DECODED0
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#define IBSS_ATTR_FLAC_DECODED0 IBSS_ATTR
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#endif
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/* Endian conversion routines for standalone compilation */
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#ifdef BUILD_STANDALONE
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#ifdef BUILD_BIGENDIAN
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#define betoh32(x) (x)
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#define letoh32(x) swap32(x)
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#else
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#define letoh32(x) (x)
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#define betoh32(x) swap32(x)
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#endif
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/* Taken from rockbox/firmware/export/system.h */
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static inline unsigned short swap16(unsigned short value)
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/*
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result[15..8] = value[ 7..0];
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result[ 7..0] = value[15..8];
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*/
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{
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return (value >> 8) | (value << 8);
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}
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static inline unsigned long swap32(unsigned long value)
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/*
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result[31..24] = value[ 7.. 0];
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result[23..16] = value[15.. 8];
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result[15.. 8] = value[23..16];
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result[ 7.. 0] = value[31..24];
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*/
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{
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unsigned long hi = swap16(value >> 16);
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unsigned long lo = swap16(value & 0xffff);
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return (lo << 16) | hi;
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}
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#endif
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#endif /* BITSTREAM_H */
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