X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154:/interpretor/lib/src/libsndfile-1.0.25/src/vox_adpcm.c..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/lib/src/libsndfile-1.0.25/src/static/git-logo.png diff --git a/interpretor/lib/src/libsndfile-1.0.25/src/vox_adpcm.c b/interpretor/lib/src/libsndfile-1.0.25/src/vox_adpcm.c deleted file mode 100644 index 579a5d0..0000000 --- a/interpretor/lib/src/libsndfile-1.0.25/src/vox_adpcm.c +++ /dev/null @@ -1,394 +0,0 @@ -/* -** Copyright (C) 2002-2011 Erik de Castro Lopo -** -** 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 is the OKI / Dialogic ADPCM encoder/decoder. It converts from -** 12 bit linear sample data to a 4 bit ADPCM. -*/ - -/* - * Note: some early Dialogic hardware does not always reset the ADPCM encoder - * at the start of each vox file. This can result in clipping and/or DC offset - * problems when it comes to decoding the audio. Whilst little can be done - * about the clipping, a DC offset can be removed by passing the decoded audio - * through a high-pass filter at e.g. 10Hz. - */ - -#include "sfconfig.h" - -#include -#include -#include -#include - -#include "sndfile.h" -#include "sfendian.h" -#include "common.h" -#include "ima_oki_adpcm.h" - - -static sf_count_t vox_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ; -static sf_count_t vox_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ; -static sf_count_t vox_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ; -static sf_count_t vox_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ; - -static sf_count_t vox_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ; -static sf_count_t vox_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ; -static sf_count_t vox_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ; -static sf_count_t vox_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ; - -static int vox_read_block (SF_PRIVATE *psf, IMA_OKI_ADPCM *pvox, short *ptr, int len) ; - -/*------------------------------------------------------------------------------ -*/ - -static int -codec_close (SF_PRIVATE * psf) -{ - IMA_OKI_ADPCM * p = (IMA_OKI_ADPCM *) psf->codec_data ; - - if (p->errors) - psf_log_printf (psf, "*** Warning : ADPCM state errors: %d\n", p->errors) ; - return p->errors ; -} /* code_close */ - -int -vox_adpcm_init (SF_PRIVATE *psf) -{ IMA_OKI_ADPCM *pvox = NULL ; - - if (psf->file.mode == SFM_RDWR) - return SFE_BAD_MODE_RW ; - - if (psf->file.mode == SFM_WRITE && psf->sf.channels != 1) - return SFE_CHANNEL_COUNT ; - - if ((pvox = malloc (sizeof (IMA_OKI_ADPCM))) == NULL) - return SFE_MALLOC_FAILED ; - - psf->codec_data = (void*) pvox ; - memset (pvox, 0, sizeof (IMA_OKI_ADPCM)) ; - - if (psf->file.mode == SFM_WRITE) - { psf->write_short = vox_write_s ; - psf->write_int = vox_write_i ; - psf->write_float = vox_write_f ; - psf->write_double = vox_write_d ; - } - else - { psf_log_printf (psf, "Header-less OKI Dialogic ADPCM encoded file.\n") ; - psf_log_printf (psf, "Setting up for 8kHz, mono, Vox ADPCM.\n") ; - - psf->read_short = vox_read_s ; - psf->read_int = vox_read_i ; - psf->read_float = vox_read_f ; - psf->read_double = vox_read_d ; - } ; - - /* Standard sample rate chennels etc. */ - if (psf->sf.samplerate < 1) - psf->sf.samplerate = 8000 ; - psf->sf.channels = 1 ; - - psf->sf.frames = psf->filelength * 2 ; - - psf->sf.seekable = SF_FALSE ; - psf->codec_close = codec_close ; - - /* Seek back to start of data. */ - if (psf_fseek (psf, 0 , SEEK_SET) == -1) - return SFE_BAD_SEEK ; - - ima_oki_adpcm_init (pvox, IMA_OKI_ADPCM_TYPE_OKI) ; - - return 0 ; -} /* vox_adpcm_init */ - -/*============================================================================== -*/ - -static int -vox_read_block (SF_PRIVATE *psf, IMA_OKI_ADPCM *pvox, short *ptr, int len) -{ int indx = 0, k ; - - while (indx < len) - { pvox->code_count = (len - indx > IMA_OKI_ADPCM_PCM_LEN) ? IMA_OKI_ADPCM_CODE_LEN : (len - indx + 1) / 2 ; - - if ((k = psf_fread (pvox->codes, 1, pvox->code_count, psf)) != pvox->code_count) - { if (psf_ftell (psf) != psf->filelength) - psf_log_printf (psf, "*** Warning : short read (%d != %d).\n", k, pvox->code_count) ; - if (k == 0) - break ; - } ; - - pvox->code_count = k ; - - ima_oki_adpcm_decode_block (pvox) ; - - memcpy (&(ptr [indx]), pvox->pcm, pvox->pcm_count * sizeof (short)) ; - indx += pvox->pcm_count ; - } ; - - return indx ; -} /* vox_read_block */ - - -static sf_count_t -vox_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - int readcount, count ; - sf_count_t total = 0 ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - while (len > 0) - { readcount = (len > 0x10000000) ? 0x10000000 : (int) len ; - - count = vox_read_block (psf, pvox, ptr, readcount) ; - - total += count ; - len -= count ; - if (count != readcount) - break ; - } ; - - return total ; -} /* vox_read_s */ - -static sf_count_t -vox_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - short *sptr ; - int k, bufferlen, readcount, count ; - sf_count_t total = 0 ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - sptr = psf->u.sbuf ; - bufferlen = ARRAY_LEN (psf->u.sbuf) ; - while (len > 0) - { readcount = (len >= bufferlen) ? bufferlen : (int) len ; - count = vox_read_block (psf, pvox, sptr, readcount) ; - for (k = 0 ; k < readcount ; k++) - ptr [total + k] = ((int) sptr [k]) << 16 ; - total += count ; - len -= readcount ; - if (count != readcount) - break ; - } ; - - return total ; -} /* vox_read_i */ - -static sf_count_t -vox_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - short *sptr ; - int k, bufferlen, readcount, count ; - sf_count_t total = 0 ; - float normfact ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x8000) : 1.0 ; - - sptr = psf->u.sbuf ; - bufferlen = ARRAY_LEN (psf->u.sbuf) ; - while (len > 0) - { readcount = (len >= bufferlen) ? bufferlen : (int) len ; - count = vox_read_block (psf, pvox, sptr, readcount) ; - for (k = 0 ; k < readcount ; k++) - ptr [total + k] = normfact * (float) (sptr [k]) ; - total += count ; - len -= readcount ; - if (count != readcount) - break ; - } ; - - return total ; -} /* vox_read_f */ - -static sf_count_t -vox_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - short *sptr ; - int k, bufferlen, readcount, count ; - sf_count_t total = 0 ; - double normfact ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - normfact = (psf->norm_double == SF_TRUE) ? 1.0 / ((double) 0x8000) : 1.0 ; - - sptr = psf->u.sbuf ; - bufferlen = ARRAY_LEN (psf->u.sbuf) ; - while (len > 0) - { readcount = (len >= bufferlen) ? bufferlen : (int) len ; - count = vox_read_block (psf, pvox, sptr, readcount) ; - for (k = 0 ; k < readcount ; k++) - ptr [total + k] = normfact * (double) (sptr [k]) ; - total += count ; - len -= readcount ; - if (count != readcount) - break ; - } ; - - return total ; -} /* vox_read_d */ - -/*------------------------------------------------------------------------------ -*/ - -static int -vox_write_block (SF_PRIVATE *psf, IMA_OKI_ADPCM *pvox, const short *ptr, int len) -{ int indx = 0, k ; - - while (indx < len) - { pvox->pcm_count = (len - indx > IMA_OKI_ADPCM_PCM_LEN) ? IMA_OKI_ADPCM_PCM_LEN : len - indx ; - - memcpy (pvox->pcm, &(ptr [indx]), pvox->pcm_count * sizeof (short)) ; - - ima_oki_adpcm_encode_block (pvox) ; - - if ((k = psf_fwrite (pvox->codes, 1, pvox->code_count, psf)) != pvox->code_count) - psf_log_printf (psf, "*** Warning : short write (%d != %d).\n", k, pvox->code_count) ; - - indx += pvox->pcm_count ; - } ; - - return indx ; -} /* vox_write_block */ - -static sf_count_t -vox_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - int writecount, count ; - sf_count_t total = 0 ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - while (len) - { writecount = (len > 0x10000000) ? 0x10000000 : (int) len ; - - count = vox_write_block (psf, pvox, ptr, writecount) ; - - total += count ; - len -= count ; - if (count != writecount) - break ; - } ; - - return total ; -} /* vox_write_s */ - -static sf_count_t -vox_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - short *sptr ; - int k, bufferlen, writecount, count ; - sf_count_t total = 0 ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - sptr = psf->u.sbuf ; - bufferlen = ARRAY_LEN (psf->u.sbuf) ; - while (len > 0) - { writecount = (len >= bufferlen) ? bufferlen : (int) len ; - for (k = 0 ; k < writecount ; k++) - sptr [k] = ptr [total + k] >> 16 ; - count = vox_write_block (psf, pvox, sptr, writecount) ; - total += count ; - len -= writecount ; - if (count != writecount) - break ; - } ; - - return total ; -} /* vox_write_i */ - -static sf_count_t -vox_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - short *sptr ; - int k, bufferlen, writecount, count ; - sf_count_t total = 0 ; - float normfact ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x7FFF) : 1.0 ; - - sptr = psf->u.sbuf ; - bufferlen = ARRAY_LEN (psf->u.sbuf) ; - while (len > 0) - { writecount = (len >= bufferlen) ? bufferlen : (int) len ; - for (k = 0 ; k < writecount ; k++) - sptr [k] = lrintf (normfact * ptr [total + k]) ; - count = vox_write_block (psf, pvox, sptr, writecount) ; - total += count ; - len -= writecount ; - if (count != writecount) - break ; - } ; - - return total ; -} /* vox_write_f */ - -static sf_count_t -vox_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) -{ IMA_OKI_ADPCM *pvox ; - short *sptr ; - int k, bufferlen, writecount, count ; - sf_count_t total = 0 ; - double normfact ; - - if (! psf->codec_data) - return 0 ; - pvox = (IMA_OKI_ADPCM*) psf->codec_data ; - - normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x7FFF) : 1.0 ; - - sptr = psf->u.sbuf ; - bufferlen = ARRAY_LEN (psf->u.sbuf) ; - while (len > 0) - { writecount = (len >= bufferlen) ? bufferlen : (int) len ; - for (k = 0 ; k < writecount ; k++) - sptr [k] = lrint (normfact * ptr [total + k]) ; - count = vox_write_block (psf, pvox, sptr, writecount) ; - total += count ; - len -= writecount ; - if (count != writecount) - break ; - } ; - - return total ; -} /* vox_write_d */ -