wavpack.h
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:12k
源码类别:
Windows CE
开发平台:
C/C++
- ////////////////////////////////////////////////////////////////////////////
- // **** WAVPACK **** //
- // Hybrid Lossless Wavefile Compressor //
- // Copyright (c) 1998 - 2004 Conifer Software. //
- // All Rights Reserved. //
- // Distributed under the BSD Software License (see license.txt) //
- ////////////////////////////////////////////////////////////////////////////
- // wavpack.h
- // This header file contains all the definitions required by WavPack.
- typedef unsigned char uchar;
- #if !defined(__GNUC__) || defined(WIN32) || defined(__palmos__) || defined(__SYMBIAN32__)
- typedef unsigned short ushort;
- typedef unsigned long ulong;
- typedef unsigned int uint;
- #elif defined(__APPLE__)
- typedef unsigned long ulong;
- #endif
- // This structure is used to access the individual fields of 32-bit ieee
- // floating point numbers. This will not be compatible with compilers that
- // allocate bit fields from the most significant bits, although I'm not sure
- // how common that is.
- typedef struct {
- unsigned mantissa : 23;
- unsigned exponent : 8;
- unsigned sign : 1;
- } f32;
- #include <stdio.h>
- #include <stdlib.h>
- #define FALSE 0
- #define TRUE 1
- ////////////////////////////// WavPack Header /////////////////////////////////
- // Note that this is the ONLY structure that is written to (or read from)
- // WavPack 4.0 files, and is the preamble to every block in both the .wv
- // and .wvc files.
- typedef struct {
- char ckID [4];
- ulong ckSize;
- short version;
- uchar track_no, index_no;
- ulong total_samples, block_index, block_samples, flags, crc;
- } WavpackHeader;
- #define WavpackHeaderFormat "4LS2LLLLL"
- // or-values for "flags"
- #define BYTES_STORED 3 // 1-4 bytes/sample
- #define MONO_FLAG 4 // not stereo
- #define HYBRID_FLAG 8 // hybrid mode
- #define JOINT_STEREO 0x10 // joint stereo
- #define CROSS_DECORR 0x20 // no-delay cross decorrelation
- #define HYBRID_SHAPE 0x40 // noise shape (hybrid mode only)
- #define FLOAT_DATA 0x80 // ieee 32-bit floating point data
- #define INT32_DATA 0x100 // special extended int handling
- #define HYBRID_BITRATE 0x200 // bitrate noise (hybrid mode only)
- #define HYBRID_BALANCE 0x400 // balance noise (hybrid stereo mode only)
- #define INITIAL_BLOCK 0x800 // initial block of multichannel segment
- #define FINAL_BLOCK 0x1000 // final block of multichannel segment
- #define SHIFT_LSB 13
- #define SHIFT_MASK (0x1fL << SHIFT_LSB)
- #define MAG_LSB 18
- #define MAG_MASK (0x1fL << MAG_LSB)
- #define SRATE_LSB 23
- #define SRATE_MASK (0xfL << SRATE_LSB)
- #define IGNORED_FLAGS 0x18000000 // reserved, but ignore if encountered
- #define NEW_SHAPING 0x20000000 // use IIR filter for negative shaping
- #define UNKNOWN_FLAGS 0xC0000000 // also reserved, but refuse decode if
- // encountered
- //////////////////////////// WavPack Metadata /////////////////////////////////
- // This is an internal representation of metadata.
- typedef struct {
- long byte_length;
- void *data;
- uchar id;
- } WavpackMetadata;
- #define ID_OPTIONAL_DATA 0x20
- #define ID_ODD_SIZE 0x40
- #define ID_LARGE 0x80
- #define ID_DUMMY 0x0
- #define ID_ENCODER_INFO 0x1
- #define ID_DECORR_TERMS 0x2
- #define ID_DECORR_WEIGHTS 0x3
- #define ID_DECORR_SAMPLES 0x4
- #define ID_ENTROPY_VARS 0x5
- #define ID_HYBRID_PROFILE 0x6
- #define ID_SHAPING_WEIGHTS 0x7
- #define ID_FLOAT_INFO 0x8
- #define ID_INT32_INFO 0x9
- #define ID_WV_BITSTREAM 0xa
- #define ID_WVC_BITSTREAM 0xb
- #define ID_WVX_BITSTREAM 0xc
- #define ID_CHANNEL_INFO 0xd
- #define ID_RIFF_HEADER (ID_OPTIONAL_DATA | 0x1)
- #define ID_RIFF_TRAILER (ID_OPTIONAL_DATA | 0x2)
- #define ID_REPLAY_GAIN (ID_OPTIONAL_DATA | 0x3)
- #define ID_CUESHEET (ID_OPTIONAL_DATA | 0x4)
- #define ID_CONFIG_BLOCK (ID_OPTIONAL_DATA | 0x5)
- #define ID_MD5_CHECKSUM (ID_OPTIONAL_DATA | 0x6)
- ///////////////////////// WavPack Configuration ///////////////////////////////
- // This internal structure is used during encode to provide configuration to
- // the encoding engine and during decoding to provide fle information back to
- // the higher level functions. Not all fields are used in both modes.
- typedef struct {
- int bits_per_sample, bytes_per_sample;
- int qmode, flags, xmode, num_channels, float_norm_exp;
- long block_samples, extra_flags, sample_rate, channel_mask;
- } WavpackConfig;
- #define CONFIG_BYTES_STORED 3 // 1-4 bytes/sample
- #define CONFIG_MONO_FLAG 4 // not stereo
- #define CONFIG_HYBRID_FLAG 8 // hybrid mode
- #define CONFIG_JOINT_STEREO 0x10 // joint stereo
- #define CONFIG_CROSS_DECORR 0x20 // no-delay cross decorrelation
- #define CONFIG_HYBRID_SHAPE 0x40 // noise shape (hybrid mode only)
- #define CONFIG_FLOAT_DATA 0x80 // ieee 32-bit floating point data
- #define CONFIG_ADOBE_MODE 0x100 // "adobe" mode for 32-bit floats
- #define CONFIG_FAST_FLAG 0x200 // fast mode
- #define CONFIG_VERY_FAST_FLAG 0x400 // double fast
- #define CONFIG_HIGH_FLAG 0x800 // high quality mode
- #define CONFIG_VERY_HIGH_FLAG 0x1000 // double high (not used yet)
- #define CONFIG_BITRATE_KBPS 0x2000 // bitrate is kbps, not bits / sample
- #define CONFIG_AUTO_SHAPING 0x4000 // automatic noise shaping
- #define CONFIG_SHAPE_OVERRIDE 0x8000 // shaping mode specified
- #define CONFIG_JOINT_OVERRIDE 0x10000 // joint-stereo mode specified
- #define CONFIG_COPY_TIME 0x20000 // copy file-time from source
- #define CONFIG_CREATE_EXE 0x40000 // create executable (not yet)
- #define CONFIG_CREATE_WVC 0x80000 // create correction file
- #define CONFIG_OPTIMIZE_WVC 0x100000 // maximize bybrid compression
- #define CONFIG_QUALITY_MODE 0x200000 // psychoacoustic quality mode
- #define CONFIG_RAW_FLAG 0x400000 // raw mode (not implemented yet)
- #define CONFIG_CALC_NOISE 0x800000 // calc noise in hybrid mode
- #define CONFIG_LOSSY_MODE 0x1000000 // obsolete (for information)
- #define CONFIG_EXTRA_MODE 0x2000000 // extra processing mode
- #define CONFIG_SKIP_WVX 0x4000000 // no wvx stream w/ floats & big ints
- #define CONFIG_MD5_CHECKSUM 0x8000000 // compute & store MD5 signature
- #define CONFIG_QUIET_MODE 0x10000000 // don't report progress %
- //////////////////////////////// WavPack Stream ///////////////////////////////
- // This internal structure contains everything required to handle a WavPack
- // "stream", which is defined as a stereo or mono stream of audio samples. For
- // multichannel audio several of these would be required. Each stream contains
- // pointers to hold a complete allocated block of WavPack data, although it's
- // possible to decode WavPack blocks without buffering an entire block.
- typedef long (*read_stream)(void *, long, void *);
- typedef struct bs {
- uchar *buf, *end, *ptr;
- void (*wrap)(struct bs *bs);
- ulong file_bytes, sr;
- int error, bc;
- read_stream file;
- void *privdata;
- } Bitstream;
- #define MAX_NTERMS 16
- #define MAX_TERM 8
- struct decorr_pass {
- short term, delta, weight_A, weight_B;
- long samples_A [MAX_TERM], samples_B [MAX_TERM];
- };
- typedef struct {
- WavpackHeader wphdr;
- int num_terms, mute_error;
- ulong sample_index, crc;
- Bitstream wvbits;
- uchar int32_sent_bits, int32_zeros, int32_ones, int32_dups;
- uchar float_flags, float_shift, float_max_exp, float_norm_exp;
- struct decorr_pass decorr_passes [MAX_NTERMS];
- struct {
- ulong bitrate_delta [2], bitrate_acc [2];
- ulong median [3] [2], slow_level [2], error_limit [2];
- ulong pend_data, holding_one, zeros_acc;
- int holding_zero, pend_count;
- } w;
- } WavpackStream;
- // flags for float_flags:
- #define FLOAT_SHIFT_ONES 1 // bits left-shifted into float = '1'
- #define FLOAT_SHIFT_SAME 2 // bits left-shifted into float are the same
- #define FLOAT_SHIFT_SENT 4 // bits shifted into float are sent literally
- #define FLOAT_ZEROS_SENT 8 // "zeros" are not all real zeros
- #define FLOAT_NEG_ZEROS 0x10 // contains negative zeros
- #define FLOAT_EXCEPTIONS 0x20 // contains exceptions (inf, nan, etc.)
- /////////////////////////////// WavPack Context ///////////////////////////////
- // This internal structure holds everything required to encode or decode WavPack
- // files. It is recommended that direct access to this structure be minimized
- // and the provided utilities used instead.
- typedef struct {
- WavpackConfig config;
- WavpackStream stream;
- uchar read_buffer [1024];
- char error_message [80];
- read_stream infile;
- void *privdata;
- ulong total_samples, crc_errors, first_flags;
- int open_flags, norm_offset, reduced_channels, lossy_blocks;
- } WavpackContext;
- //////////////////////// function prototypes and macros //////////////////////
- #define CLEAR(destin) memset (&destin, 0, sizeof (destin));
- // bits.c
- void bs_open_read (Bitstream *bs, uchar *buffer_start, uchar *buffer_end, read_stream file, ulong file_bytes);
- #define bs_is_open(bs) ((bs)->ptr != NULL)
- #define getbit(bs) (
- (((bs)->bc) ?
- ((bs)->bc--, (bs)->sr & 1) :
- (((++((bs)->ptr) != (bs)->end) ? (void) 0 : (bs)->wrap (bs)), (bs)->bc = 7, ((bs)->sr = *((bs)->ptr)) & 1)
- ) ?
- ((bs)->sr >>= 1, 1) :
- ((bs)->sr >>= 1, 0)
- )
- #define getbits(value, nbits, bs) {
- while ((nbits) > (bs)->bc) {
- if (++((bs)->ptr) == (bs)->end) (bs)->wrap (bs);
- (bs)->sr |= (long)*((bs)->ptr) << (bs)->bc;
- (bs)->bc += 8;
- }
- *(value) = (bs)->sr;
- (bs)->sr >>= (nbits);
- (bs)->bc -= (nbits);
- }
- void little_endian_to_native (void *data, char *format);
- void native_to_little_endian (void *data, char *format);
- // unpack.c
- int unpack_init (WavpackContext *wpc);
- int init_wv_bitstream (WavpackContext *wpc, WavpackMetadata *wpmd);
- int read_decorr_terms (WavpackStream *wps, WavpackMetadata *wpmd);
- int read_decorr_weights (WavpackStream *wps, WavpackMetadata *wpmd);
- int read_decorr_samples (WavpackStream *wps, WavpackMetadata *wpmd);
- int read_float_info (WavpackStream *wps, WavpackMetadata *wpmd);
- int read_int32_info (WavpackStream *wps, WavpackMetadata *wpmd);
- int read_channel_info (WavpackContext *wpc, WavpackMetadata *wpmd);
- int read_config_info (WavpackContext *wpc, WavpackMetadata *wpmd);
- long unpack_samples (WavpackContext *wpc, long *buffer, ulong sample_count);
- int check_crc_error (WavpackContext *wpc);
- // metadata.c stuff
- int read_metadata_buff (WavpackContext *wpc, WavpackMetadata *wpmd);
- int process_metadata (WavpackContext *wpc, WavpackMetadata *wpmd);
- // words.c stuff
- int read_entropy_vars (WavpackStream *wps, WavpackMetadata *wpmd);
- int read_hybrid_profile (WavpackStream *wps, WavpackMetadata *wpmd);
- long get_word (WavpackStream *wps, int chan);
- long exp2s (int log);
- int restore_weight (char weight);
- #define WORD_EOF (1L << 31)
- // float.c
- int read_float_info (WavpackStream *wps, WavpackMetadata *wpmd);
- void float_values (WavpackStream *wps, long *values, long num_values);
- void float_normalize (long *values, long num_values, int delta_exp);
- // wputils.c
- WavpackContext *WavpackOpenFileInput (read_stream infile, char *error, void *privdata);
- int WavpackClose(WavpackContext *wpc);
- int WavpackGetMode (WavpackContext *wpc);
- #define MODE_WVC 0x1
- #define MODE_LOSSLESS 0x2
- #define MODE_HYBRID 0x4
- #define MODE_FLOAT 0x8
- #define MODE_VALID_TAG 0x10
- #define MODE_HIGH 0x20
- #define MODE_FAST 0x40
- void WavpackFlush (WavpackContext *wpc); //TCPMP
- ulong WavpackUnpackSamples (WavpackContext *wpc, long *buffer, ulong samples);
- ulong WavpackGetNumSamples (WavpackContext *wpc);
- ulong WavpackGetSampleIndex (WavpackContext *wpc);
- int WavpackGetNumErrors (WavpackContext *wpc);
- int WavpackLossyBlocks (WavpackContext *wpc);
- ulong WavpackGetSampleRate (WavpackContext *wpc);
- int WavpackGetBitsPerSample (WavpackContext *wpc);
- int WavpackGetBytesPerSample (WavpackContext *wpc);
- int WavpackGetNumChannels (WavpackContext *wpc);
- int WavpackGetReducedChannels (WavpackContext *wpc);