mirror of
https://github.com/claunia/flac.git
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Initial revision
This commit is contained in:
Josh Coalson
29
src/libFLAC/include/private/all.h
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29
src/libFLAC/include/private/all.h
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@@ -0,0 +1,29 @@
|
||||
/* libFLAC - Free Lossless Audio Coder library
|
||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PRIVATE__ALL_H
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#define FLAC__PRIVATE__ALL_H
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|
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#include "bitbuffer.h"
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#include "crc.h"
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#include "encoder_framing.h"
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#include "fixed.h"
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#include "lpc.h"
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#endif
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64
src/libFLAC/include/private/bitbuffer.h
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64
src/libFLAC/include/private/bitbuffer.h
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@@ -0,0 +1,64 @@
|
||||
/* libFLAC - Free Lossless Audio Coder library
|
||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PRIVATE__BITBUFFER_H
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#define FLAC__PRIVATE__BITBUFFER_H
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|
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#include <stdio.h> /* for FILE */
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#include "FLAC/ordinals.h"
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|
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typedef struct {
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byte *buffer;
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||||
unsigned capacity; /* in bytes */
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unsigned bytes, bits;
|
||||
unsigned total_bits; /* must always == 8*bytes+bits */
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||||
unsigned consumed_bytes, consumed_bits;
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unsigned total_consumed_bits; /* must always == 8*consumed_bytes+consumed_bits */
|
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} FLAC__BitBuffer;
|
||||
|
||||
void FLAC__bitbuffer_init(FLAC__BitBuffer *bb);
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bool FLAC__bitbuffer_init_from(FLAC__BitBuffer *bb, const byte buffer[], unsigned bytes);
|
||||
bool FLAC__bitbuffer_concatenate_aligned(FLAC__BitBuffer *dest, const FLAC__BitBuffer *src);
|
||||
void FLAC__bitbuffer_free(FLAC__BitBuffer *bb); /* does not 'free(buffer)' */
|
||||
bool FLAC__bitbuffer_clear(FLAC__BitBuffer *bb);
|
||||
bool FLAC__bitbuffer_clone(FLAC__BitBuffer *dest, const FLAC__BitBuffer *src);
|
||||
bool FLAC__bitbuffer_write_zeroes(FLAC__BitBuffer *bb, unsigned bits);
|
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bool FLAC__bitbuffer_write_raw_uint32(FLAC__BitBuffer *bb, uint32 val, unsigned bits);
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bool FLAC__bitbuffer_write_raw_int32(FLAC__BitBuffer *bb, int32 val, unsigned bits);
|
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bool FLAC__bitbuffer_write_raw_uint64(FLAC__BitBuffer *bb, uint64 val, unsigned bits);
|
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bool FLAC__bitbuffer_write_raw_int64(FLAC__BitBuffer *bb, int64 val, unsigned bits);
|
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bool FLAC__bitbuffer_write_rice_signed(FLAC__BitBuffer *bb, int val, unsigned parameter);
|
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bool FLAC__bitbuffer_write_rice_signed_guarded(FLAC__BitBuffer *bb, int val, unsigned parameter, unsigned max_bits, bool *overflow);
|
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bool FLAC__bitbuffer_write_utf8_uint32(FLAC__BitBuffer *bb, uint32 val);
|
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bool FLAC__bitbuffer_write_utf8_uint64(FLAC__BitBuffer *bb, uint64 val);
|
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bool FLAC__bitbuffer_zero_pad_to_byte_boundary(FLAC__BitBuffer *bb);
|
||||
bool FLAC__bitbuffer_peek_bit(FLAC__BitBuffer *bb, unsigned *val, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
|
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bool FLAC__bitbuffer_read_bit(FLAC__BitBuffer *bb, unsigned *val, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
|
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bool FLAC__bitbuffer_read_bit_to_uint32(FLAC__BitBuffer *bb, uint32 *val, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
|
||||
bool FLAC__bitbuffer_read_bit_to_uint64(FLAC__BitBuffer *bb, uint64 *val, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
|
||||
bool FLAC__bitbuffer_read_raw_uint32(FLAC__BitBuffer *bb, uint32 *val, unsigned bits, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
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bool FLAC__bitbuffer_read_raw_int32(FLAC__BitBuffer *bb, int32 *val, unsigned bits, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
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bool FLAC__bitbuffer_read_raw_uint64(FLAC__BitBuffer *bb, uint64 *val, unsigned bits, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
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bool FLAC__bitbuffer_read_raw_int64(FLAC__BitBuffer *bb, int64 *val, unsigned bits, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
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bool FLAC__bitbuffer_read_rice_signed(FLAC__BitBuffer *bb, int *val, unsigned parameter, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data);
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bool FLAC__bitbuffer_read_utf8_uint32(FLAC__BitBuffer *bb, uint32 *val, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data, byte *raw, unsigned *rawlen);
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bool FLAC__bitbuffer_read_utf8_uint64(FLAC__BitBuffer *bb, uint64 *val, bool (*read_callback)(byte buffer[], unsigned *bytes, void *client_data), void *client_data, byte *raw, unsigned *rawlen);
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void FLAC__bitbuffer_dump(const FLAC__BitBuffer *bb, FILE *out);
|
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|
||||
#endif
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||||
30
src/libFLAC/include/private/crc.h
Normal file
30
src/libFLAC/include/private/crc.h
Normal file
@@ -0,0 +1,30 @@
|
||||
/* libFLAC - Free Lossless Audio Coder library
|
||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PRIVATE__CRC_H
|
||||
#define FLAC__PRIVATE__CRC_H
|
||||
|
||||
#include "FLAC/ordinals.h"
|
||||
|
||||
/* 8 bit CRC generator, MSB shifted first
|
||||
** polynomial = x^8 + x^2 + x^1 + 1
|
||||
*/
|
||||
byte FLAC__crc8(const byte *data, const unsigned len);
|
||||
|
||||
#endif
|
||||
33
src/libFLAC/include/private/encoder_framing.h
Normal file
33
src/libFLAC/include/private/encoder_framing.h
Normal file
@@ -0,0 +1,33 @@
|
||||
/* libFLAC - Free Lossless Audio Coder library
|
||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PRIVATE__ENCODER_FRAMING_H
|
||||
#define FLAC__PRIVATE__ENCODER_FRAMING_H
|
||||
|
||||
#include "FLAC/format.h"
|
||||
#include "bitbuffer.h"
|
||||
|
||||
bool FLAC__add_metadata_block(const FLAC__StreamMetaData *metadata, FLAC__BitBuffer *bb);
|
||||
bool FLAC__frame_add_header(const FLAC__FrameHeader *header, bool streamable_subset, bool is_last_block, FLAC__BitBuffer *bb);
|
||||
bool FLAC__subframe_add_constant(unsigned bits_per_sample, const FLAC__SubframeHeader *subframe, FLAC__BitBuffer *bb);
|
||||
bool FLAC__subframe_add_fixed(const int32 residual[], unsigned residual_samples, unsigned bits_per_sample, const FLAC__SubframeHeader *subframe, FLAC__BitBuffer *bb);
|
||||
bool FLAC__subframe_add_lpc(const int32 residual[], unsigned residual_samples, unsigned bits_per_sample, const FLAC__SubframeHeader *subframe, FLAC__BitBuffer *bb);
|
||||
bool FLAC__subframe_add_verbatim(const int32 signal[], unsigned samples, unsigned bits_per_sample, FLAC__BitBuffer *bb);
|
||||
|
||||
#endif
|
||||
65
src/libFLAC/include/private/fixed.h
Normal file
65
src/libFLAC/include/private/fixed.h
Normal file
@@ -0,0 +1,65 @@
|
||||
/* libFLAC - Free Lossless Audio Coder library
|
||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PRIVATE__FIXED_H
|
||||
#define FLAC__PRIVATE__FIXED_H
|
||||
|
||||
#include "FLAC/format.h"
|
||||
|
||||
/*
|
||||
* FLAC__fixed_compute_best_predictor()
|
||||
* --------------------------------------------------------------------
|
||||
* Compute the best fixed predictor and the expected bits-per-sample
|
||||
* of the residual signal for each order.
|
||||
*
|
||||
* IN data[0,data_len-1]
|
||||
* IN data_len
|
||||
* OUT residual_bits_per_sample[0,FLAC__MAX_FIXED_ORDER]
|
||||
*/
|
||||
unsigned FLAC__fixed_compute_best_predictor(const int32 data[], unsigned data_len, real residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
|
||||
|
||||
/*
|
||||
* FLAC__fixed_compute_residual()
|
||||
* --------------------------------------------------------------------
|
||||
* Compute the residual signal obtained from sutracting the predicted
|
||||
* signal from the original.
|
||||
*
|
||||
* IN data[-order,data_len-1] original signal (NOTE THE INDICES!)
|
||||
* IN data_len length of original signal
|
||||
* IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order
|
||||
* OUT residual[0,data_len-1] residual signal
|
||||
*/
|
||||
void FLAC__fixed_compute_residual(const int32 data[], unsigned data_len, unsigned order, int32 residual[]);
|
||||
|
||||
/*
|
||||
* FLAC__fixed_restore_signal()
|
||||
* --------------------------------------------------------------------
|
||||
* Restore the original signal by summing the residual and the
|
||||
* predictor.
|
||||
*
|
||||
* IN residual[0,data_len-1] residual signal
|
||||
* IN data_len length of original signal
|
||||
* IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order
|
||||
* *** IMPORTANT: the caller must pass in the historical samples:
|
||||
* IN data[-order,-1] previously-reconstructed historical samples
|
||||
* OUT data[0,data_len-1] original signal
|
||||
*/
|
||||
void FLAC__fixed_restore_signal(const int32 residual[], unsigned data_len, unsigned order, int32 data[]);
|
||||
|
||||
#endif
|
||||
142
src/libFLAC/include/private/lpc.h
Normal file
142
src/libFLAC/include/private/lpc.h
Normal file
@@ -0,0 +1,142 @@
|
||||
/* libFLAC - Free Lossless Audio Coder library
|
||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PRIVATE__LPC_H
|
||||
#define FLAC__PRIVATE__LPC_H
|
||||
|
||||
#include "FLAC/ordinals.h"
|
||||
|
||||
#define FLAC__MAX_LPC_ORDER (32u)
|
||||
|
||||
/*
|
||||
* FLAC__lpc_compute_autocorrelation()
|
||||
* --------------------------------------------------------------------
|
||||
* Compute the autocorrelation for lags between 0 and lag-1.
|
||||
* Assumes data[] outside of [0,data_len-1] == 0.
|
||||
* Asserts that lag > 0.
|
||||
*
|
||||
* IN data[0,data_len-1]
|
||||
* IN data_len
|
||||
* IN 0 < lag <= data_len
|
||||
* OUT autoc[0,lag-1]
|
||||
*/
|
||||
void FLAC__lpc_compute_autocorrelation(const real data[], unsigned data_len, unsigned lag, real autoc[]);
|
||||
|
||||
/*
|
||||
* FLAC__lpc_compute_lp_coefficients()
|
||||
* --------------------------------------------------------------------
|
||||
* Computes LP coefficients for orders 1..max_order.
|
||||
* Do not call if autoc[0] == 0.0. This means the signal is zero
|
||||
* and there is no point in calculating a predictor.
|
||||
*
|
||||
* IN autoc[0,max_order] autocorrelation values
|
||||
* IN 0 < max_order <= FLAC__MAX_LPC_ORDER max LP order to compute
|
||||
* OUT lp_coeff[0,max_order-1][0,max_order-1] LP coefficients for each order
|
||||
* *** IMPORTANT:
|
||||
* *** lp_coeff[0,max_order-1][max_order,FLAC__MAX_LPC_ORDER-1] are untouched
|
||||
* OUT error[0,max_order-1] error for each order
|
||||
*
|
||||
* Example: if max_order is 9, the LP coefficients for order 9 will be
|
||||
* in lp_coeff[8][0,8], the LP coefficients for order 8 will be
|
||||
* in lp_coeff[7][0,7], etc.
|
||||
*/
|
||||
void FLAC__lpc_compute_lp_coefficients(const real autoc[], unsigned max_order, real lp_coeff[][FLAC__MAX_LPC_ORDER], real error[]);
|
||||
|
||||
/*
|
||||
* FLAC__lpc_quantize_coefficients()
|
||||
* --------------------------------------------------------------------
|
||||
* Quantizes the LP coefficients. NOTE: precision + bits_per_sample
|
||||
* must be less than 32 (sizeof(int32)*8).
|
||||
*
|
||||
* IN lp_coeff[0,order-1] LP coefficients
|
||||
* IN order LP order
|
||||
* IN FLAC__MIN_QLP_COEFF_PRECISION < precision
|
||||
* desired precision (in bits, including sign
|
||||
* bit) of largest coefficient
|
||||
* IN bits_per_sample > 0 bits per sample of the originial signal
|
||||
* OUT qlp_coeff[0,order-1] quantized coefficients
|
||||
* OUT bits # of bits to shift right to get approximated
|
||||
* LP coefficients. NOTE: could be negative,
|
||||
* but |*bits| will always be <= precision
|
||||
* RETURN 0 => quantization OK
|
||||
* 1 => coefficients vary too much to quantize to the desired
|
||||
* precision. 'bits' is unset
|
||||
* 2 => coefficients are all zero, which is bad. 'bits' is unset
|
||||
*/
|
||||
int FLAC__lpc_quantize_coefficients(const real lp_coeff[], unsigned order, unsigned precision, unsigned bits_per_sample, int32 qlp_coeff[], int *bits);
|
||||
|
||||
/*
|
||||
* FLAC__lpc_compute_residual_from_qlp_coefficients()
|
||||
* --------------------------------------------------------------------
|
||||
* Compute the residual signal obtained from sutracting the predicted
|
||||
* signal from the original.
|
||||
*
|
||||
* IN data[-order,data_len-1] original signal (NOTE THE INDICES!)
|
||||
* IN data_len length of original signal
|
||||
* IN qlp_coeff[0,order-1] quantized LP coefficients
|
||||
* IN order > 0 LP order
|
||||
* IN lp_quantization quantization of LP coefficients in bits
|
||||
* OUT residual[0,data_len-1] residual signal
|
||||
*/
|
||||
void FLAC__lpc_compute_residual_from_qlp_coefficients(const int32 data[], unsigned data_len, const int32 qlp_coeff[], unsigned order, int lp_quantization, int32 residual[]);
|
||||
|
||||
/*
|
||||
* FLAC__lpc_restore_signal()
|
||||
* --------------------------------------------------------------------
|
||||
* Restore the original signal by summing the residual and the
|
||||
* predictor.
|
||||
*
|
||||
* IN residual[0,data_len-1] residual signal
|
||||
* IN data_len length of original signal
|
||||
* IN qlp_coeff[0,order-1] quantized LP coefficients
|
||||
* IN order > 0 LP order
|
||||
* IN lp_quantization quantization of LP coefficients in bits
|
||||
* *** IMPORTANT: the caller must pass in the historical samples:
|
||||
* IN data[-order,-1] previously-reconstructed historical samples
|
||||
* OUT data[0,data_len-1] original signal
|
||||
*/
|
||||
void FLAC__lpc_restore_signal(const int32 residual[], unsigned data_len, const int32 qlp_coeff[], unsigned order, int lp_quantization, int32 data[]);
|
||||
|
||||
/*
|
||||
* FLAC__lpc_compute_expected_bits_per_residual_sample()
|
||||
* --------------------------------------------------------------------
|
||||
* Compute the expected number of bits per residual signal sample
|
||||
* based on the LP error (which is related to the residual variance).
|
||||
*
|
||||
* IN lpc_error >= 0.0 error returned from calculating LP coefficients
|
||||
* IN total_samples > 0 # of samples in residual signal
|
||||
* RETURN expected bits per sample
|
||||
*/
|
||||
real FLAC__lpc_compute_expected_bits_per_residual_sample(real lpc_error, unsigned total_samples);
|
||||
|
||||
/*
|
||||
* FLAC__lpc_compute_best_order()
|
||||
* --------------------------------------------------------------------
|
||||
* Compute the best order from the array of signal errors returned
|
||||
* during coefficient computation.
|
||||
*
|
||||
* IN lpc_error[0,max_order-1] >= 0.0 error returned from calculating LP coefficients
|
||||
* IN max_order > 0 max LP order
|
||||
* IN total_samples > 0 # of samples in residual signal
|
||||
* IN bits_per_signal_sample # of bits per sample in the original signal
|
||||
* RETURN [1,max_order] best order
|
||||
*/
|
||||
unsigned FLAC__lpc_compute_best_order(const real lpc_error[], unsigned max_order, unsigned total_samples, unsigned bits_per_signal_sample);
|
||||
|
||||
#endif
|
||||
28
src/libFLAC/include/protected/stream_decoder.h
Normal file
28
src/libFLAC/include/protected/stream_decoder.h
Normal file
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||||
/* libFLAC - Free Lossless Audio Coder library
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||||
* Copyright (C) 2000 Josh Coalson
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Library General Public
|
||||
* License along with this library; if not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef FLAC__PROTECTED__STREAM_DECODER_H
|
||||
#define FLAC__PROTECTED__STREAM_DECODER_H
|
||||
|
||||
#include "FLAC/stream_decoder.h"
|
||||
|
||||
/* only useful to the file_decoder */
|
||||
unsigned FLAC__stream_decoder_input_bytes_unconsumed(FLAC__StreamDecoder *decoder);
|
||||
|
||||
#endif
|
||||
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Block a user