164 lines
6.4 KiB
C
164 lines
6.4 KiB
C
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////////////////////////////////////////////////////////////////////////////
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// **** WAVPACK **** //
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// Hybrid Lossless Wavefile Compressor //
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// Copyright (c) 1998 - 2005 Conifer Software. //
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// All Rights Reserved. //
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// Distributed under the BSD Software License (see license.txt) //
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////////////////////////////////////////////////////////////////////////////
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// wputils.h
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#ifndef WPUTILS_H
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#define WPUTILS_H
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// This header file contains all the definitions required to use the
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// functions in "wputils.c" to read and write WavPack files and streams.
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#include <sys/types.h>
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#if defined(_WIN32) && !defined(__MINGW32__)
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#include <stdlib.h>
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typedef unsigned __int64 uint64_t;
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typedef unsigned __int32 uint32_t;
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typedef unsigned __int16 uint16_t;
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typedef unsigned __int8 uint8_t;
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typedef __int64 int64_t;
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typedef __int32 int32_t;
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typedef __int16 int16_t;
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typedef __int8 int8_t;
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typedef float float32_t;
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#else
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#include <inttypes.h>
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#endif
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typedef unsigned char uchar;
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#if !defined(__GNUC__) || defined(WIN32)
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typedef unsigned short ushort;
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typedef unsigned int uint;
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#endif
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///////////////////////// WavPack Configuration ///////////////////////////////
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// This external structure is used during encode to provide configuration to
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// the encoding engine and during decoding to provide fle information back to
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// the higher level functions. Not all fields are used in both modes.
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typedef struct {
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float bitrate, shaping_weight;
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int bits_per_sample, bytes_per_sample;
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int qmode, flags, xmode, num_channels, float_norm_exp;
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int32_t block_samples, extra_flags, sample_rate, channel_mask;
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uchar md5_checksum [16], md5_read;
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int num_tag_strings;
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char **tag_strings;
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} WavpackConfig;
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#define CONFIG_HYBRID_FLAG 8 // hybrid mode
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#define CONFIG_JOINT_STEREO 0x10 // joint stereo
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#define CONFIG_HYBRID_SHAPE 0x40 // noise shape (hybrid mode only)
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#define CONFIG_FAST_FLAG 0x200 // fast mode
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#define CONFIG_HIGH_FLAG 0x800 // high quality mode
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#define CONFIG_BITRATE_KBPS 0x2000 // bitrate is kbps, not bits / sample
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#define CONFIG_SHAPE_OVERRIDE 0x8000 // shaping mode specified
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#define CONFIG_JOINT_OVERRIDE 0x10000 // joint-stereo mode specified
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#define CONFIG_CREATE_WVC 0x80000 // create correction file
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#define CONFIG_OPTIMIZE_WVC 0x100000 // maximize bybrid compression
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#define CONFIG_CALC_NOISE 0x800000 // calc noise in hybrid mode
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#define CONFIG_EXTRA_MODE 0x2000000 // extra processing mode
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#define CONFIG_SKIP_WVX 0x4000000 // no wvx stream w/ floats & big ints
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////////////// Callbacks used for reading & writing WavPack streams //////////
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typedef struct {
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int32_t (*read_bytes)(void *id, void *data, int32_t bcount);
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uint32_t (*get_pos)(void *id);
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int (*set_pos_abs)(void *id, uint32_t pos);
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int (*set_pos_rel)(void *id, int32_t delta, int mode);
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int (*push_back_byte)(void *id, int c);
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uint32_t (*get_length)(void *id);
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int (*can_seek)(void *id);
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} stream_reader;
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typedef int (*blockout)(void *id, void *data, int32_t bcount);
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//////////////////////// function prototypes and macros //////////////////////
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typedef void WavpackContext;
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#ifdef __cplusplus
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extern "C" {
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#endif
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WavpackContext *WavpackOpenFileInputEx (stream_reader *reader, void *wv_id, void *wvc_id, char *error, int flags, int norm_offset);
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WavpackContext *WavpackOpenFileInput (const char *infilename, char *error, int flags, int norm_offset);
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#define OPEN_WVC 0x1 // open/read "correction" file
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#define OPEN_TAGS 0x2 // read ID3v1 / APEv2 tags (seekable file)
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#define OPEN_WRAPPER 0x4 // make audio wrapper available (i.e. RIFF)
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#define OPEN_2CH_MAX 0x8 // open multichannel as stereo (no downmix)
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#define OPEN_NORMALIZE 0x10 // normalize floating point data to +/- 1.0
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#define OPEN_STREAMING 0x20 // "streaming" mode blindly unpacks blocks
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// w/o regard to header file position info
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int WavpackGetMode (WavpackContext *wpc);
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#define MODE_WVC 0x1
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#define MODE_LOSSLESS 0x2
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#define MODE_HYBRID 0x4
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#define MODE_FLOAT 0x8
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#define MODE_VALID_TAG 0x10
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#define MODE_HIGH 0x20
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#define MODE_FAST 0x40
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#define MODE_EXTRA 0x80
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#define MODE_APETAG 0x100
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#define MODE_SFX 0x200
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int WavpackGetVersion (WavpackContext *wpc);
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uint32_t WavpackUnpackSamples (WavpackContext *wpc, int32_t *buffer, uint32_t samples);
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uint32_t WavpackGetNumSamples (WavpackContext *wpc);
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uint32_t WavpackGetSampleIndex (WavpackContext *wpc);
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int WavpackGetNumErrors (WavpackContext *wpc);
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int WavpackLossyBlocks (WavpackContext *wpc);
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int WavpackSeekSample (WavpackContext *wpc, uint32_t sample);
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WavpackContext *WavpackCloseFile (WavpackContext *wpc);
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uint32_t WavpackGetSampleRate (WavpackContext *wpc);
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int WavpackGetBitsPerSample (WavpackContext *wpc);
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int WavpackGetBytesPerSample (WavpackContext *wpc);
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int WavpackGetNumChannels (WavpackContext *wpc);
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int WavpackGetReducedChannels (WavpackContext *wpc);
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int WavpackGetFloatNormExp (WavpackContext *wpc);
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int WavpackGetMD5Sum (WavpackContext *wpc, uchar data [16]);
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uint32_t WavpackGetWrapperBytes (WavpackContext *wpc);
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uchar *WavpackGetWrapperData (WavpackContext *wpc);
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void WavpackFreeWrapper (WavpackContext *wpc);
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double WavpackGetProgress (WavpackContext *wpc);
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uint32_t WavpackGetFileSize (WavpackContext *wpc);
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double WavpackGetRatio (WavpackContext *wpc);
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double WavpackGetAverageBitrate (WavpackContext *wpc, int count_wvc);
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double WavpackGetInstantBitrate (WavpackContext *wpc);
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int WavpackGetTagItem (WavpackContext *wpc, const char *item, char *value, int size);
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int WavpackAppendTagItem (WavpackContext *wpc, const char *item, const char *value);
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int WavpackWriteTag (WavpackContext *wpc);
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WavpackContext *WavpackOpenFileOutput (blockout blockout, void *wv_id, void *wvc_id);
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int WavpackSetConfiguration (WavpackContext *wpc, WavpackConfig *config, uint32_t total_samples);
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int WavpackAddWrapper (WavpackContext *wpc, void *data, uint32_t bcount);
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int WavpackStoreMD5Sum (WavpackContext *wpc, uchar data [16]);
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int WavpackPackInit (WavpackContext *wpc);
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int WavpackPackSamples (WavpackContext *wpc, int32_t *sample_buffer, uint32_t sample_count);
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int WavpackFlushSamples (WavpackContext *wpc);
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void WavpackUpdateNumSamples (WavpackContext *wpc, void *first_block);
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void *WavpackGetWrapperLocation (void *first_block);
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// this function is not actually in wputils.c, but is generally useful
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void float_normalize (int32_t *values, int32_t num_values, int delta_exp);
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#ifdef __cplusplus
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}
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#endif
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#endif
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