+++ /dev/null
-/*
- * This source code is a product of Sun Microsystems, Inc. and is provided
- * for unrestricted use. Users may copy or modify this source code without
- * charge.
- *
- * SUN SOURCE CODE IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING
- * THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
- *
- * Sun source code is provided with no support and without any obligation on
- * the part of Sun Microsystems, Inc. to assist in its use, correction,
- * modification or enhancement.
- *
- * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
- * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THIS SOFTWARE
- * OR ANY PART THEREOF.
- *
- * In no event will Sun Microsystems, Inc. be liable for any lost revenue
- * or profits or other special, indirect and consequential damages, even if
- * Sun has been advised of the possibility of such damages.
- *
- * Sun Microsystems, Inc.
- * 2550 Garcia Avenue
- * Mountain View, California 94043
- */
-
-#ifndef G72X_PRIVATE_H
-#define G72X_PRIVATE_H
-
-#ifdef __cplusplus
-#error "This code is not designed to be compiled with a C++ compiler."
-#endif
-
-/*
-** The following is the definition of the state structure used by the
-** G.721/G.723 encoder and decoder to preserve their internal state
-** between successive calls. The meanings of the majority of the state
-** structure fields are explained in detail in the CCITT Recommendation
-** G.721. The field names are essentially identical to variable names
-** in the bit level description of the coding algorithm included in this
-** Recommendation.
-*/
-
-struct g72x_state
-{ long yl; /* Locked or steady state step size multiplier. */
- short yu; /* Unlocked or non-steady state step size multiplier. */
- short dms; /* Short term energy estimate. */
- short dml; /* Long term energy estimate. */
- short ap; /* Linear weighting coefficient of 'yl' and 'yu'. */
-
- short a[2]; /* Coefficients of pole portion of prediction filter. */
- short b[6]; /* Coefficients of zero portion of prediction filter. */
- short pk[2]; /*
- ** Signs of previous two samples of a partially
- ** reconstructed signal.
- **/
- short dq[6]; /*
- ** Previous 6 samples of the quantized difference
- ** signal represented in an internal floating point
- ** format.
- **/
- short sr[2]; /*
- ** Previous 2 samples of the quantized difference
- ** signal represented in an internal floating point
- ** format.
- */
- char td; /* delayed tone detect, new in 1988 version */
-
- /* The following struct members were added for libsndfile. The original
- ** code worked by calling a set of functions on a sample by sample basis
- ** which is slow on architectures like Intel x86. For libsndfile, this
- ** was changed so that the encoding and decoding routines could work on
- ** a block of samples at a time to reduce the function call overhead.
- */
- int (*encoder) (int, struct g72x_state* state) ;
- int (*decoder) (int, struct g72x_state* state) ;
-
- int codec_bits, blocksize, samplesperblock ;
-} ;
-
-typedef struct g72x_state G72x_STATE ;
-
-int predictor_zero (G72x_STATE *state_ptr);
-
-int predictor_pole (G72x_STATE *state_ptr);
-
-int step_size (G72x_STATE *state_ptr);
-
-int quantize (int d, int y, short *table, int size);
-
-int reconstruct (int sign, int dqln, int y);
-
-void update (int code_size, int y, int wi, int fi, int dq, int sr, int dqsez, G72x_STATE *state_ptr);
-
-int g721_encoder (int sample, G72x_STATE *state_ptr);
-int g721_decoder (int code, G72x_STATE *state_ptr);
-
-int g723_16_encoder (int sample, G72x_STATE *state_ptr);
-int g723_16_decoder (int code, G72x_STATE *state_ptr);
-
-int g723_24_encoder (int sample, G72x_STATE *state_ptr);
-int g723_24_decoder (int code, G72x_STATE *state_ptr);
-
-int g723_40_encoder (int sample, G72x_STATE *state_ptr);
-int g723_40_decoder (int code, G72x_STATE *state_ptr);
-
-void private_init_state (G72x_STATE *state_ptr) ;
-
-#endif /* G72X_PRIVATE_H */
projects / Faustine.git / blobdiff