diff options
Diffstat (limited to 'libs/libsndfile/src/G72x')
| -rw-r--r-- | libs/libsndfile/src/G72x/ChangeLog | 50 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/README | 0 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/README.original | 94 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g721.c | 162 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g723_16.c | 169 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g723_24.c | 146 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g723_40.c | 160 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g72x.c | 652 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g72x.h | 99 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g72x_priv.h | 118 | ||||
| -rw-r--r-- | libs/libsndfile/src/G72x/g72x_test.c | 222 |
11 files changed, 0 insertions, 1872 deletions
diff --git a/libs/libsndfile/src/G72x/ChangeLog b/libs/libsndfile/src/G72x/ChangeLog deleted file mode 100644 index aa108dff7f..0000000000 --- a/libs/libsndfile/src/G72x/ChangeLog +++ /dev/null @@ -1,50 +0,0 @@ -2001-06-05 Erik de Castro Lopo <erikd@mega-nerd.com> - - * g72x.c - Added {} in function update () to prevent 'ambiguous else' warning messages. - -2000-07-14 Erik de Castro Lopo <erikd@mega-nerd.com> - - * g72x.c - Modified g72x_init_state () to fit in with the new structure of the code. - Implemented g72x_encode_block () and g72x_decode_block (). - -2000-07-12 Erik de Castro Lopo <erikd@mega-nerd.com> - - * g72x.h - Moved nearly all definitions and function prototypes from this file have been - moved to private.h. - Added an enum defining the 4 different G72x ADPCM codecs. - Added new function prototypes to define a cleaner interface to the encoder - and decoder. This new interface also allows samples to be processed in blocks - rather than on a sample by sample basis like the original code. - - * private.h - Added prototypes moved from g72x.h. - Changed struct g72x_state to a typedef struct { .. } G72x_PRIVATE. - Added fields to G72x_PRIVATE required for working on blocks of samples. - -2000-06-07 Erik de Castro Lopo <erikd@mega-nerd.com> - - * g72x.c - Fixed all compiler warnings. - Removed functions tandem_adjust() which is not required by libsndfile. - - * g721.c - Fixed all compiler warnings. - Removed functions tandem_adjust_alaw() and tandem_adjust_ulaw () which are not - required by libsndfile. - Removed second parameter to g721_encoder () which is not required. - - * g72x.h - Removed in_coding and out_coding parameters from all functions. These allowed - g72x encoding/decoding to/from A-law or u-law and are not required by libsndfile. - Removed unneeded defines for A-law, u-law and linear encoding. - - * g723_16.c - Removed second parameter (in_coding) for g723_16_encoder(). - Removed second parameter (out_coding) for g723_16_decoder(). - - * private.h - New file containing prototypes and tyepdefs private to G72x code. - diff --git a/libs/libsndfile/src/G72x/README b/libs/libsndfile/src/G72x/README deleted file mode 100644 index e69de29bb2..0000000000 --- a/libs/libsndfile/src/G72x/README +++ /dev/null diff --git a/libs/libsndfile/src/G72x/README.original b/libs/libsndfile/src/G72x/README.original deleted file mode 100644 index 23b0e7dd50..0000000000 --- a/libs/libsndfile/src/G72x/README.original +++ /dev/null @@ -1,94 +0,0 @@ -The files in this directory comprise ANSI-C language reference implementations -of the CCITT (International Telegraph and Telephone Consultative Committee) -G.711, G.721 and G.723 voice compressions. They have been tested on Sun -SPARCstations and passed 82 out of 84 test vectors published by CCITT -(Dec. 20, 1988) for G.721 and G.723. [The two remaining test vectors, -which the G.721 decoder implementation for u-law samples did not pass, -may be in error because they are identical to two other vectors for G.723_40.] - -This source code is released by Sun Microsystems, Inc. to the public domain. -Please give your acknowledgement in product literature if this code is used -in your product implementation. - -Sun Microsystems supports some CCITT audio formats in Solaris 2.0 system -software. However, Sun's implementations have been optimized for higher -performance on SPARCstations. - - -The source files for CCITT conversion routines in this directory are: - - g72x.h header file for g721.c, g723_24.c and g723_40.c - g711.c CCITT G.711 u-law and A-law compression - g72x.c common denominator of G.721 and G.723 ADPCM codes - g721.c CCITT G.721 32Kbps ADPCM coder (with g72x.c) - g723_24.c CCITT G.723 24Kbps ADPCM coder (with g72x.c) - g723_40.c CCITT G.723 40Kbps ADPCM coder (with g72x.c) - - -Simple conversions between u-law, A-law, and 16-bit linear PCM are invoked -as follows: - - unsigned char ucode, acode; - short pcm_val; - - ucode = linear2ulaw(pcm_val); - ucode = alaw2ulaw(acode); - - acode = linear2alaw(pcm_val); - acode = ulaw2alaw(ucode); - - pcm_val = ulaw2linear(ucode); - pcm_val = alaw2linear(acode); - - -The other CCITT compression routines are invoked as follows: - - #include "g72x.h" - - struct g72x_state state; - int sample, code; - - g72x_init_state(&state); - code = {g721,g723_24,g723_40}_encoder(sample, coding, &state); - sample = {g721,g723_24,g723_40}_decoder(code, coding, &state); - -where - coding = AUDIO_ENCODING_ULAW for 8-bit u-law samples - AUDIO_ENCODING_ALAW for 8-bit A-law samples - AUDIO_ENCODING_LINEAR for 16-bit linear PCM samples - - - -This directory also includes the following sample programs: - - encode.c CCITT ADPCM encoder - decode.c CCITT ADPCM decoder - Makefile makefile for the sample programs - - -The sample programs contain examples of how to call the various compression -routines and pack/unpack the bits. The sample programs read byte streams from -stdin and write to stdout. The input/output data is raw data (no file header -or other identifying information is embedded). The sample programs are -invoked as follows: - - encode [-3|4|5] [-a|u|l] <infile >outfile - decode [-3|4|5] [-a|u|l] <infile >outfile -where: - -3 encode to (decode from) G.723 24kbps (3-bit) data - -4 encode to (decode from) G.721 32kbps (4-bit) data [the default] - -5 encode to (decode from) G.723 40kbps (5-bit) data - -a encode from (decode to) A-law data - -u encode from (decode to) u-law data [the default] - -l encode from (decode to) 16-bit linear data - -Examples: - # Read 16-bit linear and output G.721 - encode -4 -l <pcmfile >g721file - - # Read 40Kbps G.723 and output A-law - decode -5 -a <g723file >alawfile - - # Compress and then decompress u-law data using 24Kbps G.723 - encode -3 <ulawin | deoced -3 >ulawout - diff --git a/libs/libsndfile/src/G72x/g721.c b/libs/libsndfile/src/G72x/g721.c deleted file mode 100644 index 4f51bb1977..0000000000 --- a/libs/libsndfile/src/G72x/g721.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * 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 - */ - -/* - * g721.c - * - * Description: - * - * g721_encoder(), g721_decoder() - * - * These routines comprise an implementation of the CCITT G.721 ADPCM - * coding algorithm. Essentially, this implementation is identical to - * the bit level description except for a few deviations which - * take advantage of work station attributes, such as hardware 2's - * complement arithmetic and large memory. Specifically, certain time - * consuming operations such as multiplications are replaced - * with lookup tables and software 2's complement operations are - * replaced with hardware 2's complement. - * - * The deviation from the bit level specification (lookup tables) - * preserves the bit level performance specifications. - * - * As outlined in the G.721 Recommendation, the algorithm is broken - * down into modules. Each section of code below is preceded by - * the name of the module which it is implementing. - * - */ - -#include "g72x.h" -#include "g72x_priv.h" - -static short qtab_721[7] = {-124, 80, 178, 246, 300, 349, 400}; -/* - * Maps G.721 code word to reconstructed scale factor normalized log - * magnitude values. - */ -static short _dqlntab[16] = {-2048, 4, 135, 213, 273, 323, 373, 425, - 425, 373, 323, 273, 213, 135, 4, -2048}; - -/* Maps G.721 code word to log of scale factor multiplier. */ -static short _witab[16] = {-12, 18, 41, 64, 112, 198, 355, 1122, - 1122, 355, 198, 112, 64, 41, 18, -12}; -/* - * Maps G.721 code words to a set of values whose long and short - * term averages are computed and then compared to give an indication - * how stationary (steady state) the signal is. - */ -static short _fitab[16] = {0, 0, 0, 0x200, 0x200, 0x200, 0x600, 0xE00, - 0xE00, 0x600, 0x200, 0x200, 0x200, 0, 0, 0}; - -/* - * g721_encoder() - * - * Encodes the input vale of linear PCM, A-law or u-law data sl and returns - * the resulting code. -1 is returned for unknown input coding value. - */ -int -g721_encoder( - int sl, - G72x_STATE *state_ptr) -{ - short sezi, se, sez; /* ACCUM */ - short d; /* SUBTA */ - short sr; /* ADDB */ - short y; /* MIX */ - short dqsez; /* ADDC */ - short dq, i; - - /* linearize input sample to 14-bit PCM */ - sl >>= 2; /* 14-bit dynamic range */ - - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - se = (sezi + predictor_pole(state_ptr)) >> 1; /* estimated signal */ - - d = sl - se; /* estimation difference */ - - /* quantize the prediction difference */ - y = step_size(state_ptr); /* quantizer step size */ - i = quantize(d, y, qtab_721, 7); /* i = ADPCM code */ - - dq = reconstruct(i & 8, _dqlntab[i], y); /* quantized est diff */ - - sr = (dq < 0) ? se - (dq & 0x3FFF) : se + dq; /* reconst. signal */ - - dqsez = sr + sez - se; /* pole prediction diff. */ - - update(4, y, _witab[i] << 5, _fitab[i], dq, sr, dqsez, state_ptr); - - return (i); -} - -/* - * g721_decoder() - * - * Description: - * - * Decodes a 4-bit code of G.721 encoded data of i and - * returns the resulting linear PCM, A-law or u-law value. - * return -1 for unknown out_coding value. - */ -int -g721_decoder( - int i, - G72x_STATE *state_ptr) -{ - short sezi, sei, sez, se; /* ACCUM */ - short y; /* MIX */ - short sr; /* ADDB */ - short dq; - short dqsez; - - i &= 0x0f; /* mask to get proper bits */ - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - y = step_size(state_ptr); /* dynamic quantizer step size */ - - dq = reconstruct(i & 0x08, _dqlntab[i], y); /* quantized diff. */ - - sr = (dq < 0) ? (se - (dq & 0x3FFF)) : se + dq; /* reconst. signal */ - - dqsez = sr - se + sez; /* pole prediction diff. */ - - update(4, y, _witab[i] << 5, _fitab[i], dq, sr, dqsez, state_ptr); - - /* sr was 14-bit dynamic range */ - return (sr << 2); -} -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: 101b6e25-457d-490a-99ae-e2e74a26ea24 -*/ - diff --git a/libs/libsndfile/src/G72x/g723_16.c b/libs/libsndfile/src/G72x/g723_16.c deleted file mode 100644 index 0c3174501c..0000000000 --- a/libs/libsndfile/src/G72x/g723_16.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * 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 - */ -/* 16kbps version created, used 24kbps code and changing as little as possible. - * G.726 specs are available from ITU's gopher or WWW site (http://www.itu.ch) - * If any errors are found, please contact me at mrand@tamu.edu - * -Marc Randolph - */ - -/* - * g723_16.c - * - * Description: - * - * g723_16_encoder(), g723_16_decoder() - * - * These routines comprise an implementation of the CCITT G.726 16 Kbps - * ADPCM coding algorithm. Essentially, this implementation is identical to - * the bit level description except for a few deviations which take advantage - * of workstation attributes, such as hardware 2's complement arithmetic. - * - */ - -#include "g72x.h" -#include "g72x_priv.h" - -/* - * Maps G.723_16 code word to reconstructed scale factor normalized log - * magnitude values. Comes from Table 11/G.726 - */ -static short _dqlntab[4] = { 116, 365, 365, 116}; - -/* Maps G.723_16 code word to log of scale factor multiplier. - * - * _witab[4] is actually {-22 , 439, 439, -22}, but FILTD wants it - * as WI << 5 (multiplied by 32), so we'll do that here - */ -static short _witab[4] = {-704, 14048, 14048, -704}; - -/* - * Maps G.723_16 code words to a set of values whose long and short - * term averages are computed and then compared to give an indication - * how stationary (steady state) the signal is. - */ - -/* Comes from FUNCTF */ -static short _fitab[4] = {0, 0xE00, 0xE00, 0}; - -/* Comes from quantizer decision level tables (Table 7/G.726) - */ -static short qtab_723_16[1] = {261}; - - -/* - * g723_16_encoder() - * - * Encodes a linear PCM, A-law or u-law input sample and returns its 2-bit code. - * Returns -1 if invalid input coding value. - */ -int -g723_16_encoder( - int sl, - G72x_STATE *state_ptr) -{ - short sei, sezi, se, sez; /* ACCUM */ - short d; /* SUBTA */ - short y; /* MIX */ - short sr; /* ADDB */ - short dqsez; /* ADDC */ - short dq, i; - - /* linearize input sample to 14-bit PCM */ - sl >>= 2; /* sl of 14-bit dynamic range */ - - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - d = sl - se; /* d = estimation diff. */ - - /* quantize prediction difference d */ - y = step_size(state_ptr); /* quantizer step size */ - i = quantize(d, y, qtab_723_16, 1); /* i = ADPCM code */ - - /* Since quantize() only produces a three level output - * (1, 2, or 3), we must create the fourth one on our own - */ - if (i == 3) /* i code for the zero region */ - if ((d & 0x8000) == 0) /* If d > 0, i=3 isn't right... */ - i = 0; - - dq = reconstruct(i & 2, _dqlntab[i], y); /* quantized diff. */ - - sr = (dq < 0) ? se - (dq & 0x3FFF) : se + dq; /* reconstructed signal */ - - dqsez = sr + sez - se; /* pole prediction diff. */ - - update(2, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr); - - return (i); -} - -/* - * g723_16_decoder() - * - * Decodes a 2-bit CCITT G.723_16 ADPCM code and returns - * the resulting 16-bit linear PCM, A-law or u-law sample value. - * -1 is returned if the output coding is unknown. - */ -int -g723_16_decoder( - int i, - G72x_STATE *state_ptr) -{ - short sezi, sei, sez, se; /* ACCUM */ - short y; /* MIX */ - short sr; /* ADDB */ - short dq; - short dqsez; - - i &= 0x03; /* mask to get proper bits */ - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - y = step_size(state_ptr); /* adaptive quantizer step size */ - dq = reconstruct(i & 0x02, _dqlntab[i], y); /* unquantize pred diff */ - - sr = (dq < 0) ? (se - (dq & 0x3FFF)) : (se + dq); /* reconst. signal */ - - dqsez = sr - se + sez; /* pole prediction diff. */ - - update(2, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr); - - /* sr was of 14-bit dynamic range */ - return (sr << 2); -} -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: ae265466-c3fc-4f83-bb32-edae488a5ca5 -*/ - diff --git a/libs/libsndfile/src/G72x/g723_24.c b/libs/libsndfile/src/G72x/g723_24.c deleted file mode 100644 index 8748459ac4..0000000000 --- a/libs/libsndfile/src/G72x/g723_24.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * 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 - */ - -/* - * g723_24.c - * - * Description: - * - * g723_24_encoder(), g723_24_decoder() - * - * These routines comprise an implementation of the CCITT G.723 24 Kbps - * ADPCM coding algorithm. Essentially, this implementation is identical to - * the bit level description except for a few deviations which take advantage - * of workstation attributes, such as hardware 2's complement arithmetic. - * - */ - -#include "g72x.h" -#include "g72x_priv.h" - -/* - * Maps G.723_24 code word to reconstructed scale factor normalized log - * magnitude values. - */ -static short _dqlntab[8] = {-2048, 135, 273, 373, 373, 273, 135, -2048}; - -/* Maps G.723_24 code word to log of scale factor multiplier. */ -static short _witab[8] = {-128, 960, 4384, 18624, 18624, 4384, 960, -128}; - -/* - * Maps G.723_24 code words to a set of values whose long and short - * term averages are computed and then compared to give an indication - * how stationary (steady state) the signal is. - */ -static short _fitab[8] = {0, 0x200, 0x400, 0xE00, 0xE00, 0x400, 0x200, 0}; - -static short qtab_723_24[3] = {8, 218, 331}; - -/* - * g723_24_encoder() - * - * Encodes a linear PCM, A-law or u-law input sample and returns its 3-bit code. - * Returns -1 if invalid input coding value. - */ -int -g723_24_encoder( - int sl, - G72x_STATE *state_ptr) -{ - short sei, sezi, se, sez; /* ACCUM */ - short d; /* SUBTA */ - short y; /* MIX */ - short sr; /* ADDB */ - short dqsez; /* ADDC */ - short dq, i; - - /* linearize input sample to 14-bit PCM */ - sl >>= 2; /* sl of 14-bit dynamic range */ - - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - d = sl - se; /* d = estimation diff. */ - - /* quantize prediction difference d */ - y = step_size(state_ptr); /* quantizer step size */ - i = quantize(d, y, qtab_723_24, 3); /* i = ADPCM code */ - dq = reconstruct(i & 4, _dqlntab[i], y); /* quantized diff. */ - - sr = (dq < 0) ? se - (dq & 0x3FFF) : se + dq; /* reconstructed signal */ - - dqsez = sr + sez - se; /* pole prediction diff. */ - - update(3, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr); - - return (i); -} - -/* - * g723_24_decoder() - * - * Decodes a 3-bit CCITT G.723_24 ADPCM code and returns - * the resulting 16-bit linear PCM, A-law or u-law sample value. - * -1 is returned if the output coding is unknown. - */ -int -g723_24_decoder( - int i, - G72x_STATE *state_ptr) -{ - short sezi, sei, sez, se; /* ACCUM */ - short y; /* MIX */ - short sr; /* ADDB */ - short dq; - short dqsez; - - i &= 0x07; /* mask to get proper bits */ - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - y = step_size(state_ptr); /* adaptive quantizer step size */ - dq = reconstruct(i & 0x04, _dqlntab[i], y); /* unquantize pred diff */ - - sr = (dq < 0) ? (se - (dq & 0x3FFF)) : (se + dq); /* reconst. signal */ - - dqsez = sr - se + sez; /* pole prediction diff. */ - - update(3, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr); - - return (sr << 2); /* sr was of 14-bit dynamic range */ -} -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: 75389236-650b-4427-98f3-0df6e8fb24bc -*/ - diff --git a/libs/libsndfile/src/G72x/g723_40.c b/libs/libsndfile/src/G72x/g723_40.c deleted file mode 100644 index 6ddb577dfb..0000000000 --- a/libs/libsndfile/src/G72x/g723_40.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * 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 - */ - -/* - * g723_40.c - * - * Description: - * - * g723_40_encoder(), g723_40_decoder() - * - * These routines comprise an implementation of the CCITT G.723 40Kbps - * ADPCM coding algorithm. Essentially, this implementation is identical to - * the bit level description except for a few deviations which - * take advantage of workstation attributes, such as hardware 2's - * complement arithmetic. - * - * The deviation from the bit level specification (lookup tables), - * preserves the bit level performance specifications. - * - * As outlined in the G.723 Recommendation, the algorithm is broken - * down into modules. Each section of code below is preceded by - * the name of the module which it is implementing. - * - */ - -#include "g72x.h" -#include "g72x_priv.h" - -/* - * Maps G.723_40 code word to ructeconstructed scale factor normalized log - * magnitude values. - */ -static short _dqlntab[32] = {-2048, -66, 28, 104, 169, 224, 274, 318, - 358, 395, 429, 459, 488, 514, 539, 566, - 566, 539, 514, 488, 459, 429, 395, 358, - 318, 274, 224, 169, 104, 28, -66, -2048}; - -/* Maps G.723_40 code word to log of scale factor multiplier. */ -static short _witab[32] = {448, 448, 768, 1248, 1280, 1312, 1856, 3200, - 4512, 5728, 7008, 8960, 11456, 14080, 16928, 22272, - 22272, 16928, 14080, 11456, 8960, 7008, 5728, 4512, - 3200, 1856, 1312, 1280, 1248, 768, 448, 448}; - -/* - * Maps G.723_40 code words to a set of values whose long and short - * term averages are computed and then compared to give an indication - * how stationary (steady state) the signal is. - */ -static short _fitab[32] = {0, 0, 0, 0, 0, 0x200, 0x200, 0x200, - 0x200, 0x200, 0x400, 0x600, 0x800, 0xA00, 0xC00, 0xC00, - 0xC00, 0xC00, 0xA00, 0x800, 0x600, 0x400, 0x200, 0x200, - 0x200, 0x200, 0x200, 0, 0, 0, 0, 0}; - -static short qtab_723_40[15] = {-122, -16, 68, 139, 198, 250, 298, 339, - 378, 413, 445, 475, 502, 528, 553}; - -/* - * g723_40_encoder() - * - * Encodes a 16-bit linear PCM, A-law or u-law input sample and retuens - * the resulting 5-bit CCITT G.723 40Kbps code. - * Returns -1 if the input coding value is invalid. - */ -int g723_40_encoder (int sl, G72x_STATE *state_ptr) -{ - short sei, sezi, se, sez; /* ACCUM */ - short d; /* SUBTA */ - short y; /* MIX */ - short sr; /* ADDB */ - short dqsez; /* ADDC */ - short dq, i; - - /* linearize input sample to 14-bit PCM */ - sl >>= 2; /* sl of 14-bit dynamic range */ - - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - d = sl - se; /* d = estimation difference */ - - /* quantize prediction difference */ - y = step_size(state_ptr); /* adaptive quantizer step size */ - i = quantize(d, y, qtab_723_40, 15); /* i = ADPCM code */ - - dq = reconstruct(i & 0x10, _dqlntab[i], y); /* quantized diff */ - - sr = (dq < 0) ? se - (dq & 0x7FFF) : se + dq; /* reconstructed signal */ - - dqsez = sr + sez - se; /* dqsez = pole prediction diff. */ - - update(5, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr); - - return (i); -} - -/* - * g723_40_decoder() - * - * Decodes a 5-bit CCITT G.723 40Kbps code and returns - * the resulting 16-bit linear PCM, A-law or u-law sample value. - * -1 is returned if the output coding is unknown. - */ -int g723_40_decoder (int i, G72x_STATE *state_ptr) -{ - short sezi, sei, sez, se; /* ACCUM */ - short y ; /* MIX */ - short sr; /* ADDB */ - short dq; - short dqsez; - - i &= 0x1f; /* mask to get proper bits */ - sezi = predictor_zero(state_ptr); - sez = sezi >> 1; - sei = sezi + predictor_pole(state_ptr); - se = sei >> 1; /* se = estimated signal */ - - y = step_size(state_ptr); /* adaptive quantizer step size */ - dq = reconstruct(i & 0x10, _dqlntab[i], y); /* estimation diff. */ - - sr = (dq < 0) ? (se - (dq & 0x7FFF)) : (se + dq); /* reconst. signal */ - - dqsez = sr - se + sez; /* pole prediction diff. */ - - update(5, y, _witab[i], _fitab[i], dq, sr, dqsez, state_ptr); - - return (sr << 2); /* sr was of 14-bit dynamic range */ -} -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: eb8d9a00-32bf-4dd2-b287-01b0336d72bf -*/ - diff --git a/libs/libsndfile/src/G72x/g72x.c b/libs/libsndfile/src/G72x/g72x.c deleted file mode 100644 index ea01d793d0..0000000000 --- a/libs/libsndfile/src/G72x/g72x.c +++ /dev/null @@ -1,652 +0,0 @@ -/* - * 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 - */ - -/* - * g72x.c - * - * Common routines for G.721 and G.723 conversions. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "g72x.h" -#include "g72x_priv.h" - -static G72x_STATE * g72x_state_new (void) ; -static int unpack_bytes (int bits, int blocksize, const unsigned char * block, short * samples) ; -static int pack_bytes (int bits, const short * samples, unsigned char * block) ; - -static -short power2 [15] = -{ 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80, - 0x100, 0x200, 0x400, 0x800, 0x1000, 0x2000, 0x4000 -} ; - -/* - * quan() - * - * quantizes the input val against the table of size short integers. - * It returns i if table[i - 1] <= val < table[i]. - * - * Using linear search for simple coding. - */ -static -int quan (int val, short *table, int size) -{ - int i; - - for (i = 0; i < size; i++) - if (val < *table++) - break; - return (i); -} - -/* - * fmult() - * - * returns the integer product of the 14-bit integer "an" and - * "floating point" representation (4-bit exponent, 6-bit mantessa) "srn". - */ -static -int fmult (int an, int srn) -{ - short anmag, anexp, anmant; - short wanexp, wanmant; - short retval; - - anmag = (an > 0) ? an : ((-an) & 0x1FFF); - anexp = quan(anmag, power2, 15) - 6; - anmant = (anmag == 0) ? 32 : - (anexp >= 0) ? anmag >> anexp : anmag << -anexp; - wanexp = anexp + ((srn >> 6) & 0xF) - 13; - - /* - ** The original was : - ** wanmant = (anmant * (srn & 0x37) + 0x30) >> 4 ; - ** but could see no valid reason for the + 0x30. - ** Removed it and it improved the SNR of the codec. - */ - - wanmant = (anmant * (srn & 0x37)) >> 4 ; - - retval = (wanexp >= 0) ? ((wanmant << wanexp) & 0x7FFF) : - (wanmant >> -wanexp); - - return (((an ^ srn) < 0) ? -retval : retval); -} - -static G72x_STATE * g72x_state_new (void) -{ return calloc (1, sizeof (G72x_STATE)) ; -} - -/* - * private_init_state() - * - * This routine initializes and/or resets the G72x_PRIVATE structure - * pointed to by 'state_ptr'. - * All the initial state values are specified in the CCITT G.721 document. - */ -void private_init_state (G72x_STATE *state_ptr) -{ - int cnta; - - state_ptr->yl = 34816; - state_ptr->yu = 544; - state_ptr->dms = 0; - state_ptr->dml = 0; - state_ptr->ap = 0; - for (cnta = 0; cnta < 2; cnta++) { - state_ptr->a[cnta] = 0; - state_ptr->pk[cnta] = 0; - state_ptr->sr[cnta] = 32; - } - for (cnta = 0; cnta < 6; cnta++) { - state_ptr->b[cnta] = 0; - state_ptr->dq[cnta] = 32; - } - state_ptr->td = 0; -} /* private_init_state */ - -struct g72x_state * g72x_reader_init (int codec, int *blocksize, int *samplesperblock) -{ G72x_STATE *pstate ; - - if ((pstate = g72x_state_new ()) == NULL) - return NULL ; - - private_init_state (pstate) ; - - pstate->encoder = NULL ; - - switch (codec) - { case G723_16_BITS_PER_SAMPLE : /* 2 bits per sample. */ - pstate->decoder = g723_16_decoder ; - *blocksize = G723_16_BYTES_PER_BLOCK ; - *samplesperblock = G723_16_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 2 ; - pstate->blocksize = G723_16_BYTES_PER_BLOCK ; - pstate->samplesperblock = G723_16_SAMPLES_PER_BLOCK ; - break ; - - case G723_24_BITS_PER_SAMPLE : /* 3 bits per sample. */ - pstate->decoder = g723_24_decoder ; - *blocksize = G723_24_BYTES_PER_BLOCK ; - *samplesperblock = G723_24_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 3 ; - pstate->blocksize = G723_24_BYTES_PER_BLOCK ; - pstate->samplesperblock = G723_24_SAMPLES_PER_BLOCK ; - break ; - - case G721_32_BITS_PER_SAMPLE : /* 4 bits per sample. */ - pstate->decoder = g721_decoder ; - *blocksize = G721_32_BYTES_PER_BLOCK ; - *samplesperblock = G721_32_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 4 ; - pstate->blocksize = G721_32_BYTES_PER_BLOCK ; - pstate->samplesperblock = G721_32_SAMPLES_PER_BLOCK ; - break ; - - case G721_40_BITS_PER_SAMPLE : /* 5 bits per sample. */ - pstate->decoder = g723_40_decoder ; - *blocksize = G721_40_BYTES_PER_BLOCK ; - *samplesperblock = G721_40_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 5 ; - pstate->blocksize = G721_40_BYTES_PER_BLOCK ; - pstate->samplesperblock = G721_40_SAMPLES_PER_BLOCK ; - break ; - - default : - free (pstate) ; - return NULL ; - } ; - - return pstate ; -} /* g72x_reader_init */ - -struct g72x_state * g72x_writer_init (int codec, int *blocksize, int *samplesperblock) -{ G72x_STATE *pstate ; - - if ((pstate = g72x_state_new ()) == NULL) - return NULL ; - - private_init_state (pstate) ; - pstate->decoder = NULL ; - - switch (codec) - { case G723_16_BITS_PER_SAMPLE : /* 2 bits per sample. */ - pstate->encoder = g723_16_encoder ; - *blocksize = G723_16_BYTES_PER_BLOCK ; - *samplesperblock = G723_16_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 2 ; - pstate->blocksize = G723_16_BYTES_PER_BLOCK ; - pstate->samplesperblock = G723_16_SAMPLES_PER_BLOCK ; - break ; - - case G723_24_BITS_PER_SAMPLE : /* 3 bits per sample. */ - pstate->encoder = g723_24_encoder ; - *blocksize = G723_24_BYTES_PER_BLOCK ; - *samplesperblock = G723_24_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 3 ; - pstate->blocksize = G723_24_BYTES_PER_BLOCK ; - pstate->samplesperblock = G723_24_SAMPLES_PER_BLOCK ; - break ; - - case G721_32_BITS_PER_SAMPLE : /* 4 bits per sample. */ - pstate->encoder = g721_encoder ; - *blocksize = G721_32_BYTES_PER_BLOCK ; - *samplesperblock = G721_32_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 4 ; - pstate->blocksize = G721_32_BYTES_PER_BLOCK ; - pstate->samplesperblock = G721_32_SAMPLES_PER_BLOCK ; - break ; - - case G721_40_BITS_PER_SAMPLE : /* 5 bits per sample. */ - pstate->encoder = g723_40_encoder ; - *blocksize = G721_40_BYTES_PER_BLOCK ; - *samplesperblock = G721_40_SAMPLES_PER_BLOCK ; - pstate->codec_bits = 5 ; - pstate->blocksize = G721_40_BYTES_PER_BLOCK ; - pstate->samplesperblock = G721_40_SAMPLES_PER_BLOCK ; - break ; - - default : - free (pstate) ; - return NULL ; - } ; - - return pstate ; -} /* g72x_writer_init */ - -int g72x_decode_block (G72x_STATE *pstate, const unsigned char *block, short *samples) -{ int k, count ; - - count = unpack_bytes (pstate->codec_bits, pstate->blocksize, block, samples) ; - - for (k = 0 ; k < count ; k++) - samples [k] = pstate->decoder (samples [k], pstate) ; - - return 0 ; -} /* g72x_decode_block */ - -int g72x_encode_block (G72x_STATE *pstate, short *samples, unsigned char *block) -{ int k, count ; - - for (k = 0 ; k < pstate->samplesperblock ; k++) - samples [k] = pstate->encoder (samples [k], pstate) ; - - count = pack_bytes (pstate->codec_bits, samples, block) ; - - return count ; -} /* g72x_encode_block */ - -/* - * predictor_zero() - * - * computes the estimated signal from 6-zero predictor. - * - */ -int predictor_zero (G72x_STATE *state_ptr) -{ - int i; - int sezi; - - sezi = fmult(state_ptr->b[0] >> 2, state_ptr->dq[0]); - for (i = 1; i < 6; i++) /* ACCUM */ - sezi += fmult(state_ptr->b[i] >> 2, state_ptr->dq[i]); - return (sezi); -} -/* - * predictor_pole() - * - * computes the estimated signal from 2-pole predictor. - * - */ -int predictor_pole(G72x_STATE *state_ptr) -{ - return (fmult(state_ptr->a[1] >> 2, state_ptr->sr[1]) + - fmult(state_ptr->a[0] >> 2, state_ptr->sr[0])); -} -/* - * step_size() - * - * computes the quantization step size of the adaptive quantizer. - * - */ -int step_size (G72x_STATE *state_ptr) -{ - int y; - int dif; - int al; - - if (state_ptr->ap >= 256) - return (state_ptr->yu); - else { - y = state_ptr->yl >> 6; - dif = state_ptr->yu - y; - al = state_ptr->ap >> 2; - if (dif > 0) - y += (dif * al) >> 6; - else if (dif < 0) - y += (dif * al + 0x3F) >> 6; - return (y); - } -} - -/* - * quantize() - * - * Given a raw sample, 'd', of the difference signal and a - * quantization step size scale factor, 'y', this routine returns the - * ADPCM codeword to which that sample gets quantized. The step - * size scale factor division operation is done in the log base 2 domain - * as a subtraction. - */ -int quantize( - int d, /* Raw difference signal sample */ - int y, /* Step size multiplier */ - short *table, /* quantization table */ - int size) /* table size of short integers */ -{ - short dqm; /* Magnitude of 'd' */ - short expon; /* Integer part of base 2 log of 'd' */ - short mant; /* Fractional part of base 2 log */ - short dl; /* Log of magnitude of 'd' */ - short dln; /* Step size scale factor normalized log */ - int i; - - /* - * LOG - * - * Compute base 2 log of 'd', and store in 'dl'. - */ - dqm = abs(d); - expon = quan(dqm >> 1, power2, 15); - mant = ((dqm << 7) >> expon) & 0x7F; /* Fractional portion. */ - dl = (expon << 7) + mant; - - /* - * SUBTB - * - * "Divide" by step size multiplier. - */ - dln = dl - (y >> 2); - - /* - * QUAN - * - * Obtain codword i for 'd'. - */ - i = quan(dln, table, size); - if (d < 0) /* take 1's complement of i */ - return ((size << 1) + 1 - i); - else if (i == 0) /* take 1's complement of 0 */ - return ((size << 1) + 1); /* new in 1988 */ - else - return (i); -} -/* - * reconstruct() - * - * Returns reconstructed difference signal 'dq' obtained from - * codeword 'i' and quantization step size scale factor 'y'. - * Multiplication is performed in log base 2 domain as addition. - */ -int -reconstruct( - int sign, /* 0 for non-negative value */ - int dqln, /* G.72x codeword */ - int y) /* Step size multiplier */ -{ - short dql; /* Log of 'dq' magnitude */ - short dex; /* Integer part of log */ - short dqt; - short dq; /* Reconstructed difference signal sample */ - - dql = dqln + (y >> 2); /* ADDA */ - - if (dql < 0) { - return ((sign) ? -0x8000 : 0); - } else { /* ANTILOG */ - dex = (dql >> 7) & 15; - dqt = 128 + (dql & 127); - dq = (dqt << 7) >> (14 - dex); - return ((sign) ? (dq - 0x8000) : dq); - } -} - - -/* - * update() - * - * updates the state variables for each output code - */ -void -update( - int code_size, /* distinguish 723_40 with others */ - int y, /* quantizer step size */ - int wi, /* scale factor multiplier */ - int fi, /* for long/short term energies */ - int dq, /* quantized prediction difference */ - int sr, /* reconstructed signal */ - int dqsez, /* difference from 2-pole predictor */ - G72x_STATE *state_ptr) /* coder state pointer */ -{ - int cnt; - short mag, expon; /* Adaptive predictor, FLOAT A */ - short a2p = 0; /* LIMC */ - short a1ul; /* UPA1 */ - short pks1; /* UPA2 */ - short fa1; - char tr; /* tone/transition detector */ - short ylint, thr2, dqthr; - short ylfrac, thr1; - short pk0; - - pk0 = (dqsez < 0) ? 1 : 0; /* needed in updating predictor poles */ - - mag = dq & 0x7FFF; /* prediction difference magnitude */ - /* TRANS */ - ylint = state_ptr->yl >> 15; /* exponent part of yl */ - ylfrac = (state_ptr->yl >> 10) & 0x1F; /* fractional part of yl */ - thr1 = (32 + ylfrac) << ylint; /* threshold */ - thr2 = (ylint > 9) ? 31 << 10 : thr1; /* limit thr2 to 31 << 10 */ - dqthr = (thr2 + (thr2 >> 1)) >> 1; /* dqthr = 0.75 * thr2 */ - if (state_ptr->td == 0) /* signal supposed voice */ - tr = 0; - else if (mag <= dqthr) /* supposed data, but small mag */ - tr = 0; /* treated as voice */ - else /* signal is data (modem) */ - tr = 1; - - /* - * Quantizer scale factor adaptation. - */ - - /* FUNCTW & FILTD & DELAY */ - /* update non-steady state step size multiplier */ - state_ptr->yu = y + ((wi - y) >> 5); - - /* LIMB */ - if (state_ptr->yu < 544) /* 544 <= yu <= 5120 */ - state_ptr->yu = 544; - else if (state_ptr->yu > 5120) - state_ptr->yu = 5120; - - /* FILTE & DELAY */ - /* update steady state step size multiplier */ - state_ptr->yl += state_ptr->yu + ((-state_ptr->yl) >> 6); - - /* - * Adaptive predictor coefficients. - */ - if (tr == 1) { /* reset a's and b's for modem signal */ - state_ptr->a[0] = 0; - state_ptr->a[1] = 0; - state_ptr->b[0] = 0; - state_ptr->b[1] = 0; - state_ptr->b[2] = 0; - state_ptr->b[3] = 0; - state_ptr->b[4] = 0; - state_ptr->b[5] = 0; - } else { /* update a's and b's */ - pks1 = pk0 ^ state_ptr->pk[0]; /* UPA2 */ - - /* update predictor pole a[1] */ - a2p = state_ptr->a[1] - (state_ptr->a[1] >> 7); - if (dqsez != 0) { - fa1 = (pks1) ? state_ptr->a[0] : -state_ptr->a[0]; - if (fa1 < -8191) /* a2p = function of fa1 */ - a2p -= 0x100; - else if (fa1 > 8191) - a2p += 0xFF; - else - a2p += fa1 >> 5; - - if (pk0 ^ state_ptr->pk[1]) - { /* LIMC */ - if (a2p <= -12160) - a2p = -12288; - else if (a2p >= 12416) - a2p = 12288; - else - a2p -= 0x80; - } - else if (a2p <= -12416) - a2p = -12288; - else if (a2p >= 12160) - a2p = 12288; - else - a2p += 0x80; - } - - /* TRIGB & DELAY */ - state_ptr->a[1] = a2p; - - /* UPA1 */ - /* update predictor pole a[0] */ - state_ptr->a[0] -= state_ptr->a[0] >> 8; - if (dqsez != 0) - { if (pks1 == 0) - state_ptr->a[0] += 192; - else - state_ptr->a[0] -= 192; - } ; - - /* LIMD */ - a1ul = 15360 - a2p; - if (state_ptr->a[0] < -a1ul) - state_ptr->a[0] = -a1ul; - else if (state_ptr->a[0] > a1ul) - state_ptr->a[0] = a1ul; - - /* UPB : update predictor zeros b[6] */ - for (cnt = 0; cnt < 6; cnt++) { - if (code_size == 5) /* for 40Kbps G.723 */ - state_ptr->b[cnt] -= state_ptr->b[cnt] >> 9; - else /* for G.721 and 24Kbps G.723 */ - state_ptr->b[cnt] -= state_ptr->b[cnt] >> 8; - if (dq & 0x7FFF) { /* XOR */ - if ((dq ^ state_ptr->dq[cnt]) >= 0) - state_ptr->b[cnt] += 128; - else - state_ptr->b[cnt] -= 128; - } - } - } - - for (cnt = 5; cnt > 0; cnt--) - state_ptr->dq[cnt] = state_ptr->dq[cnt-1]; - /* FLOAT A : convert dq[0] to 4-bit exp, 6-bit mantissa f.p. */ - if (mag == 0) { - state_ptr->dq[0] = (dq >= 0) ? 0x20 : 0xFC20; - } else { - expon = quan(mag, power2, 15); - state_ptr->dq[0] = (dq >= 0) ? - (expon << 6) + ((mag << 6) >> expon) : - (expon << 6) + ((mag << 6) >> expon) - 0x400; - } - - state_ptr->sr[1] = state_ptr->sr[0]; - /* FLOAT B : convert sr to 4-bit exp., 6-bit mantissa f.p. */ - if (sr == 0) { - state_ptr->sr[0] = 0x20; - } else if (sr > 0) { - expon = quan(sr, power2, 15); - state_ptr->sr[0] = (expon << 6) + ((sr << 6) >> expon); - } else if (sr > -32768) { - mag = -sr; - expon = quan(mag, power2, 15); - state_ptr->sr[0] = (expon << 6) + ((mag << 6) >> expon) - 0x400; - } else - state_ptr->sr[0] = (short) 0xFC20; - - /* DELAY A */ - state_ptr->pk[1] = state_ptr->pk[0]; - state_ptr->pk[0] = pk0; - - /* TONE */ - if (tr == 1) /* this sample has been treated as data */ - state_ptr->td = 0; /* next one will be treated as voice */ - else if (a2p < -11776) /* small sample-to-sample correlation */ - state_ptr->td = 1; /* signal may be data */ - else /* signal is voice */ - state_ptr->td = 0; - - /* - * Adaptation speed control. - */ - state_ptr->dms += (fi - state_ptr->dms) >> 5; /* FILTA */ - state_ptr->dml += (((fi << 2) - state_ptr->dml) >> 7); /* FILTB */ - - if (tr == 1) - state_ptr->ap = 256; - else if (y < 1536) /* SUBTC */ - state_ptr->ap += (0x200 - state_ptr->ap) >> 4; - else if (state_ptr->td == 1) - state_ptr->ap += (0x200 - state_ptr->ap) >> 4; - else if (abs((state_ptr->dms << 2) - state_ptr->dml) >= - (state_ptr->dml >> 3)) - state_ptr->ap += (0x200 - state_ptr->ap) >> 4; - else - state_ptr->ap += (-state_ptr->ap) >> 4; - - return ; -} /* update */ - -/*------------------------------------------------------------------------------ -*/ - -static int -unpack_bytes (int bits, int blocksize, const unsigned char * block, short * samples) -{ unsigned int in_buffer = 0 ; - unsigned char in_byte ; - int k, in_bits = 0, bindex = 0 ; - - for (k = 0 ; bindex <= blocksize && k < G72x_BLOCK_SIZE ; k++) - { if (in_bits < bits) - { in_byte = block [bindex++] ; - - in_buffer |= (in_byte << in_bits); - in_bits += 8; - } - samples [k] = in_buffer & ((1 << bits) - 1); - in_buffer >>= bits; - in_bits -= bits; - } ; - - return k ; -} /* unpack_bytes */ - -static int -pack_bytes (int bits, const short * samples, unsigned char * block) -{ - unsigned int out_buffer = 0 ; - int k, bindex = 0, out_bits = 0 ; - unsigned char out_byte ; - - for (k = 0 ; k < G72x_BLOCK_SIZE ; k++) - { out_buffer |= (samples [k] << out_bits) ; - out_bits += bits ; - if (out_bits >= 8) - { out_byte = out_buffer & 0xFF ; - out_bits -= 8 ; - out_buffer >>= 8 ; - block [bindex++] = out_byte ; - } - } ; - - return bindex ; -} /* pack_bytes */ - -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: 6298dc75-fd0f-4062-9b90-f73ed69f22d4 -*/ - diff --git a/libs/libsndfile/src/G72x/g72x.h b/libs/libsndfile/src/G72x/g72x.h deleted file mode 100644 index e6319e6248..0000000000 --- a/libs/libsndfile/src/G72x/g72x.h +++ /dev/null @@ -1,99 +0,0 @@ -/* -** Copyright (C) 1999-2005 Erik de Castro Lopo <erikd@mega-nerd.com> -** -** This program is free software; you can redistribute it and/or modify -** it under the terms of the GNU Lesser General Public License as published by -** the Free Software Foundation; either version 2.1 of the License, or -** (at your option) any later version. -** -** This program 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 Lesser General Public License for more details. -** -** You should have received a copy of the GNU Lesser General Public License -** along with this program; if not, write to the Free Software -** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -*/ - -/* -** This file is not the same as the original file from Sun Microsystems. Nearly -** all the original definitions and function prototypes that were in the file -** of this name have been moved to g72x_priv.h. -*/ - -#ifndef G72X_HEADER_FILE -#define G72X_HEADER_FILE - -/* -** Number of samples per block to process. -** Must be a common multiple of possible bits per sample : 2, 3, 4, 5 and 8. -*/ -#define G72x_BLOCK_SIZE (3 * 5 * 8) - -/* -** Identifiers for the differing kinds of G72x ADPCM codecs. -** The identifiers also define the number of encoded bits per sample. -*/ - -enum -{ G723_16_BITS_PER_SAMPLE = 2, - G723_24_BITS_PER_SAMPLE = 3, - G723_40_BITS_PER_SAMPLE = 5, - - G721_32_BITS_PER_SAMPLE = 4, - G721_40_BITS_PER_SAMPLE = 5, - - G723_16_SAMPLES_PER_BLOCK = G72x_BLOCK_SIZE, - G723_24_SAMPLES_PER_BLOCK = G723_24_BITS_PER_SAMPLE * (G72x_BLOCK_SIZE / G723_24_BITS_PER_SAMPLE), - G723_40_SAMPLES_PER_BLOCK = G723_40_BITS_PER_SAMPLE * (G72x_BLOCK_SIZE / G723_40_BITS_PER_SAMPLE), - - G721_32_SAMPLES_PER_BLOCK = G72x_BLOCK_SIZE, - G721_40_SAMPLES_PER_BLOCK = G721_40_BITS_PER_SAMPLE * (G72x_BLOCK_SIZE / G721_40_BITS_PER_SAMPLE), - - G723_16_BYTES_PER_BLOCK = (G723_16_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8, - G723_24_BYTES_PER_BLOCK = (G723_24_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8, - G723_40_BYTES_PER_BLOCK = (G723_40_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8, - - G721_32_BYTES_PER_BLOCK = (G721_32_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8, - G721_40_BYTES_PER_BLOCK = (G721_40_BITS_PER_SAMPLE * G72x_BLOCK_SIZE) / 8 -} ; - -/* Forward declaration of of g72x_state. */ - -struct g72x_state ; - -/* External function definitions. */ - -struct g72x_state * g72x_reader_init (int codec, int *blocksize, int *samplesperblock) ; -struct g72x_state * g72x_writer_init (int codec, int *blocksize, int *samplesperblock) ; -/* -** Initialize the ADPCM state table for the given codec. -** Return 0 on success, 1 on fail. -*/ - -int g72x_decode_block (struct g72x_state *pstate, const unsigned char *block, short *samples) ; -/* -** The caller fills data->block with data->bytes bytes before calling the -** function. The value data->bytes must be an integer multiple of -** data->blocksize and be <= data->max_bytes. -** When it returns, the caller can read out data->samples samples. -*/ - -int g72x_encode_block (struct g72x_state *pstate, short *samples, unsigned char *block) ; -/* -** The caller fills state->samples some integer multiple data->samples_per_block -** (up to G72x_BLOCK_SIZE) samples before calling the function. -** When it returns, the caller can read out bytes encoded bytes. -*/ - -#endif /* !G72X_HEADER_FILE */ - -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: 6ca84e5f-f932-4ba1-87ee-37056d921621 -*/ - diff --git a/libs/libsndfile/src/G72x/g72x_priv.h b/libs/libsndfile/src/G72x/g72x_priv.h deleted file mode 100644 index a88e96d0da..0000000000 --- a/libs/libsndfile/src/G72x/g72x_priv.h +++ /dev/null @@ -1,118 +0,0 @@ -/* - * 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 */ - -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: d9ad4da7-0fa3-471d-8020-720b5cfb5e5b -*/ - diff --git a/libs/libsndfile/src/G72x/g72x_test.c b/libs/libsndfile/src/G72x/g72x_test.c deleted file mode 100644 index caf58467b7..0000000000 --- a/libs/libsndfile/src/G72x/g72x_test.c +++ /dev/null @@ -1,222 +0,0 @@ -/* -** Copyright (C) 1999-2004 Erik de Castro Lopo <erikd@mega-nerd.com> -** -** This program is free software; you can redistribute it and/or modify -** it under the terms of the GNU General Public License as published by -** the Free Software Foundation; either version 2 of the License, or -** (at your option) any later version. -** -** This program 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 General Public License for more details. -** -** You should have received a copy of the GNU General Public License -** along with this program; if not, write to the Free Software -** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -*/ - -#include <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <math.h> - -#include "g72x.h" -#include "g72x_priv.h" - -#ifndef M_PI -#define M_PI 3.14159265358979323846264338 -#endif - -#define BUFFER_SIZE (1<<14) /* Should be (1<<14) */ -#define SAMPLE_RATE 11025 - - -static void g721_test (void) ; -static void g723_test (double margin) ; - -static void gen_signal_double (double *data, double scale, int datalen) ; -static int error_function (double data, double orig, double margin) ; - -static int oct_save_short (short *a, short *b, int len) ; - -int -main (int argc, char *argv []) -{ int bDoAll = 0 ; - int nTests = 0 ; - - if (argc != 2) - { printf ("Usage : %s <test>\n", argv [0]) ; - printf (" Where <test> is one of the following:\n") ; - printf (" g721 - test G721 encoder and decoder\n") ; - printf (" g723 - test G721 encoder and decoder\n") ; - printf (" all - perform all tests\n") ; - exit (1) ; - } ; - - bDoAll=!strcmp (argv [1], "all"); - - if (bDoAll || ! strcmp (argv [1], "g721")) - { g721_test () ; - nTests++ ; - } ; - - if (bDoAll || ! strcmp (argv [1], "g723")) - { g723_test (0.53) ; - nTests++ ; - } ; - - if (nTests == 0) - { printf ("Mono : ************************************\n") ; - printf ("Mono : * No '%s' test defined.\n", argv [1]) ; - printf ("Mono : ************************************\n") ; - return 1 ; - } ; - - return 0 ; -} /* main */ - -static void -g721_test (void) -{ - return ; -} /* g721_test */ - -static void -g723_test (double margin) -{ static double orig_buffer [BUFFER_SIZE] ; - static short orig [BUFFER_SIZE] ; - static short data [BUFFER_SIZE] ; - - G72x_STATE encoder_state, decoder_state ; - - long k ; - int code, position, max_err ; - - private_init_state (&encoder_state) ; - encoder_state.encoder = g723_24_encoder ; - encoder_state.codec_bits = 3 ; - - private_init_state (&decoder_state) ; - decoder_state.decoder = g723_24_decoder ; - decoder_state.codec_bits = 3 ; - - memset (data, 0, BUFFER_SIZE * sizeof (short)) ; - memset (orig, 0, BUFFER_SIZE * sizeof (short)) ; - - printf (" g723_test : ") ; - fflush (stdout) ; - - gen_signal_double (orig_buffer, 32000.0, BUFFER_SIZE) ; - for (k = 0 ; k < BUFFER_SIZE ; k++) - orig [k] = (short) orig_buffer [k] ; - - /* Write and read data here. */ - position = 0 ; - max_err = 0 ; - for (k = 0 ; k < BUFFER_SIZE ; k++) - { code = encoder_state.encoder (orig [k], &encoder_state) ; - data [k] = decoder_state.decoder (code, &decoder_state) ; - if (abs (orig [k] - data [k]) > max_err) - { position = k ; - max_err = abs (orig [k] - data [k]) ; - } ; - } ; - - printf ("\n\nMax error of %d at postion %d.\n", max_err, position) ; - - for (k = 0 ; k < BUFFER_SIZE ; k++) - { if (error_function (data [k], orig [k], margin)) - { printf ("Line %d: Incorrect sample A (#%ld : %d should be %d).\n", __LINE__, k, data [k], orig [k]) ; - oct_save_short (orig, data, BUFFER_SIZE) ; - exit (1) ; - } ; - } ; - - - printf ("ok\n") ; - - return ; -} /* g723_test */ - - -#define SIGNAL_MAXVAL 30000.0 -#define DECAY_COUNT 1000 - -static void -gen_signal_double (double *gendata, double scale, int gendatalen) -{ int k, ramplen ; - double amp = 0.0 ; - - ramplen = DECAY_COUNT ; - - for (k = 0 ; k < gendatalen ; k++) - { if (k <= ramplen) - amp = scale * k / ((double) ramplen) ; - else if (k > gendatalen - ramplen) - amp = scale * (gendatalen - k) / ((double) ramplen) ; - - gendata [k] = amp * (0.4 * sin (33.3 * 2.0 * M_PI * ((double) (k+1)) / ((double) SAMPLE_RATE)) - + 0.3 * cos (201.1 * 2.0 * M_PI * ((double) (k+1)) / ((double) SAMPLE_RATE))) ; - } ; - - return ; -} /* gen_signal_double */ - -static int -error_function (double data, double orig, double margin) -{ double error ; - - if (fabs (orig) <= 500.0) - error = fabs (fabs (data) - fabs(orig)) / 2000.0 ; - else if (fabs (orig) <= 1000.0) - error = fabs (data - orig) / 3000.0 ; - else - error = fabs (data - orig) / fabs (orig) ; - - if (error > margin) - { printf ("\n\n*******************\nError : %f\n", error) ; - return 1 ; - } ; - return 0 ; -} /* error_function */ - -static int -oct_save_short (short *a, short *b, int len) -{ FILE *file ; - int k ; - - if (! (file = fopen ("error.dat", "w"))) - return 1 ; - - fprintf (file, "# Not created by Octave\n") ; - - fprintf (file, "# name: a\n") ; - fprintf (file, "# type: matrix\n") ; - fprintf (file, "# rows: %d\n", len) ; - fprintf (file, "# columns: 1\n") ; - - for (k = 0 ; k < len ; k++) - fprintf (file, "% d\n", a [k]) ; - - fprintf (file, "# name: b\n") ; - fprintf (file, "# type: matrix\n") ; - fprintf (file, "# rows: %d\n", len) ; - fprintf (file, "# columns: 1\n") ; - - for (k = 0 ; k < len ; k++) - fprintf (file, "% d\n", b [k]) ; - - fclose (file) ; - return 0 ; -} /* oct_save_short */ - -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: 0597b442-a5b0-4abf-92a4-92f6c24e85a6 -*/ - |