cadb3627fc
librbcodec users must provide these two files when the library is built. rbcodecconfig.h provides configuration #defines and basic types, and will be included by public librbcodec headers, so it must not conflict with the user's code. rbcodecplatform.h provides various OS functions, and will only be included by source files and private headers. This system is intended to provide maximum flexibility for use on embedded systems, where no operating system headers are included. Unix systems can just copy rbcodecconfig-example.h and rbcodecplatform-unix.h with minimal changes. Change-Id: I350a2274d173da391fd1ca00c4202e9760d91def Reviewed-on: http://gerrit.rockbox.org/143 Reviewed-by: Nils Wallménius <nils@rockbox.org> Tested-by: Nils Wallménius <nils@rockbox.org>
78 lines
1.9 KiB
C
78 lines
1.9 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 "platform.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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#if (CONFIG_CPU == MCF5250) || (CONFIG_CPU == PP5022) || (CONFIG_CPU == PP5024)
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#define ICODE_ATTR_FLAC ICODE_ATTR
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#define IBSS_ATTR_FLAC IBSS_ATTR
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/* Enough IRAM to move additional data to it. */
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#define IBSS_ATTR_FLAC_LARGE_IRAM IBSS_ATTR
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#define IBSS_ATTR_FLAC_XLARGE_IRAM
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#elif defined(CPU_S5L870X)
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#define ICODE_ATTR_FLAC ICODE_ATTR
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#define IBSS_ATTR_FLAC IBSS_ATTR
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/* Enough IRAM to move even more additional data to it. */
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#define IBSS_ATTR_FLAC_LARGE_IRAM IBSS_ATTR
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#define IBSS_ATTR_FLAC_XLARGE_IRAM IBSS_ATTR
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#else
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#define ICODE_ATTR_FLAC ICODE_ATTR
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#define IBSS_ATTR_FLAC IBSS_ATTR
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/* Not enough IRAM available. */
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#define IBSS_ATTR_FLAC_LARGE_IRAM
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#define IBSS_ATTR_FLAC_XLARGE_IRAM
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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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