+++ /dev/null
-/*
-** Copyright (C) 1999-2011 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.
-*/
-
-#include "sfconfig.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-#include "sndfile.h"
-#include "sfendian.h"
-#include "common.h"
-#include "G72x/g72x.h"
-
-/* This struct is private to the G72x code. */
-struct g72x_state ;
-typedef struct g72x_state G72x_STATE ;
-
-typedef struct
-{ /* Private data. Don't mess with it. */
- struct g72x_state * private ;
-
- /* Public data. Read only. */
- int blocksize, samplesperblock, bytesperblock ;
-
- /* Public data. Read and write. */
- int blocks_total, block_curr, sample_curr ;
- unsigned char block [G72x_BLOCK_SIZE] ;
- short samples [G72x_BLOCK_SIZE] ;
-} G72x_PRIVATE ;
-
-static int psf_g72x_decode_block (SF_PRIVATE *psf, G72x_PRIVATE *pg72x) ;
-static int psf_g72x_encode_block (SF_PRIVATE *psf, G72x_PRIVATE *pg72x) ;
-
-static sf_count_t g72x_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
-static sf_count_t g72x_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
-static sf_count_t g72x_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
-static sf_count_t g72x_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
-
-static sf_count_t g72x_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len) ;
-static sf_count_t g72x_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len) ;
-static sf_count_t g72x_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len) ;
-static sf_count_t g72x_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len) ;
-
-static sf_count_t g72x_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ;
-
-static int g72x_close (SF_PRIVATE *psf) ;
-
-
-/*============================================================================================
-** WAV G721 Reader initialisation function.
-*/
-
-int
-g72x_init (SF_PRIVATE * psf)
-{ G72x_PRIVATE *pg72x ;
- int bitspersample, bytesperblock, codec ;
-
- if (psf->codec_data != NULL)
- { psf_log_printf (psf, "*** psf->codec_data is not NULL.\n") ;
- return SFE_INTERNAL ;
- } ;
-
- psf->sf.seekable = SF_FALSE ;
-
- if (psf->sf.channels != 1)
- return SFE_G72X_NOT_MONO ;
-
- if ((pg72x = calloc (1, sizeof (G72x_PRIVATE))) == NULL)
- return SFE_MALLOC_FAILED ;
-
- psf->codec_data = (void*) pg72x ;
-
- pg72x->block_curr = 0 ;
- pg72x->sample_curr = 0 ;
-
- switch (SF_CODEC (psf->sf.format))
- { case SF_FORMAT_G721_32 :
- codec = G721_32_BITS_PER_SAMPLE ;
- bytesperblock = G721_32_BYTES_PER_BLOCK ;
- bitspersample = G721_32_BITS_PER_SAMPLE ;
- break ;
-
- case SF_FORMAT_G723_24:
- codec = G723_24_BITS_PER_SAMPLE ;
- bytesperblock = G723_24_BYTES_PER_BLOCK ;
- bitspersample = G723_24_BITS_PER_SAMPLE ;
- break ;
-
- case SF_FORMAT_G723_40:
- codec = G723_40_BITS_PER_SAMPLE ;
- bytesperblock = G723_40_BYTES_PER_BLOCK ;
- bitspersample = G723_40_BITS_PER_SAMPLE ;
- break ;
-
- default : return SFE_UNIMPLEMENTED ;
- } ;
-
- psf->blockwidth = psf->bytewidth = 1 ;
-
- psf->filelength = psf_get_filelen (psf) ;
- if (psf->filelength < psf->dataoffset)
- psf->filelength = psf->dataoffset ;
-
- psf->datalength = psf->filelength - psf->dataoffset ;
- if (psf->dataend > 0)
- psf->datalength -= psf->filelength - psf->dataend ;
-
- if (psf->file.mode == SFM_READ)
- { pg72x->private = g72x_reader_init (codec, &(pg72x->blocksize), &(pg72x->samplesperblock)) ;
- if (pg72x->private == NULL)
- return SFE_MALLOC_FAILED ;
-
- pg72x->bytesperblock = bytesperblock ;
-
- psf->read_short = g72x_read_s ;
- psf->read_int = g72x_read_i ;
- psf->read_float = g72x_read_f ;
- psf->read_double = g72x_read_d ;
-
- psf->seek = g72x_seek ;
-
- if (psf->datalength % pg72x->blocksize)
- { psf_log_printf (psf, "*** Odd psf->datalength (%D) should be a multiple of %d\n", psf->datalength, pg72x->blocksize) ;
- pg72x->blocks_total = (psf->datalength / pg72x->blocksize) + 1 ;
- }
- else
- pg72x->blocks_total = psf->datalength / pg72x->blocksize ;
-
- psf->sf.frames = pg72x->blocks_total * pg72x->samplesperblock ;
-
- psf_g72x_decode_block (psf, pg72x) ;
- }
- else if (psf->file.mode == SFM_WRITE)
- { pg72x->private = g72x_writer_init (codec, &(pg72x->blocksize), &(pg72x->samplesperblock)) ;
- if (pg72x->private == NULL)
- return SFE_MALLOC_FAILED ;
-
- pg72x->bytesperblock = bytesperblock ;
-
- psf->write_short = g72x_write_s ;
- psf->write_int = g72x_write_i ;
- psf->write_float = g72x_write_f ;
- psf->write_double = g72x_write_d ;
-
- if (psf->datalength % pg72x->blocksize)
- pg72x->blocks_total = (psf->datalength / pg72x->blocksize) + 1 ;
- else
- pg72x->blocks_total = psf->datalength / pg72x->blocksize ;
-
- if (psf->datalength > 0)
- psf->sf.frames = (8 * psf->datalength) / bitspersample ;
-
- if ((psf->sf.frames * bitspersample) / 8 != psf->datalength)
- psf_log_printf (psf, "*** Warning : weird psf->datalength.\n") ;
- } ;
-
- psf->codec_close = g72x_close ;
-
- return 0 ;
-} /* g72x_init */
-
-/*============================================================================================
-** G721 Read Functions.
-*/
-
-static int
-psf_g72x_decode_block (SF_PRIVATE *psf, G72x_PRIVATE *pg72x)
-{ int k ;
-
- pg72x->block_curr ++ ;
- pg72x->sample_curr = 0 ;
-
- if (pg72x->block_curr > pg72x->blocks_total)
- { memset (pg72x->samples, 0, G72x_BLOCK_SIZE * sizeof (short)) ;
- return 1 ;
- } ;
-
- if ((k = psf_fread (pg72x->block, 1, pg72x->bytesperblock, psf)) != pg72x->bytesperblock)
- psf_log_printf (psf, "*** Warning : short read (%d != %d).\n", k, pg72x->bytesperblock) ;
-
- pg72x->blocksize = k ;
- g72x_decode_block (pg72x->private, pg72x->block, pg72x->samples) ;
-
- return 1 ;
-} /* psf_g72x_decode_block */
-
-static int
-g72x_read_block (SF_PRIVATE *psf, G72x_PRIVATE *pg72x, short *ptr, int len)
-{ int count, total = 0, indx = 0 ;
-
- while (indx < len)
- { if (pg72x->block_curr > pg72x->blocks_total)
- { memset (&(ptr [indx]), 0, (len - indx) * sizeof (short)) ;
- return total ;
- } ;
-
- if (pg72x->sample_curr >= pg72x->samplesperblock)
- psf_g72x_decode_block (psf, pg72x) ;
-
- count = pg72x->samplesperblock - pg72x->sample_curr ;
- count = (len - indx > count) ? count : len - indx ;
-
- memcpy (&(ptr [indx]), &(pg72x->samples [pg72x->sample_curr]), count * sizeof (short)) ;
- indx += count ;
- pg72x->sample_curr += count ;
- total = indx ;
- } ;
-
- return total ;
-} /* g72x_read_block */
-
-static sf_count_t
-g72x_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- int readcount, count ;
- sf_count_t total = 0 ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- while (len > 0)
- { readcount = (len > 0x10000000) ? 0x10000000 : (int) len ;
-
- count = g72x_read_block (psf, pg72x, ptr, readcount) ;
-
- total += count ;
- len -= count ;
-
- if (count != readcount)
- break ;
- } ;
-
- return total ;
-} /* g72x_read_s */
-
-static sf_count_t
-g72x_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- short *sptr ;
- int k, bufferlen, readcount = 0, count ;
- sf_count_t total = 0 ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- sptr = psf->u.sbuf ;
- bufferlen = SF_BUFFER_LEN / sizeof (short) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = g72x_read_block (psf, pg72x, sptr, readcount) ;
-
- for (k = 0 ; k < readcount ; k++)
- ptr [total + k] = sptr [k] << 16 ;
-
- total += count ;
- len -= readcount ;
- if (count != readcount)
- break ;
- } ;
-
- return total ;
-} /* g72x_read_i */
-
-static sf_count_t
-g72x_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- short *sptr ;
- int k, bufferlen, readcount = 0, count ;
- sf_count_t total = 0 ;
- float normfact ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- normfact = (psf->norm_float == SF_TRUE) ? 1.0 / ((float) 0x8000) : 1.0 ;
-
- sptr = psf->u.sbuf ;
- bufferlen = SF_BUFFER_LEN / sizeof (short) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = g72x_read_block (psf, pg72x, sptr, readcount) ;
- for (k = 0 ; k < readcount ; k++)
- ptr [total + k] = normfact * sptr [k] ;
-
- total += count ;
- len -= readcount ;
- if (count != readcount)
- break ;
- } ;
-
- return total ;
-} /* g72x_read_f */
-
-static sf_count_t
-g72x_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- short *sptr ;
- int k, bufferlen, readcount = 0, count ;
- sf_count_t total = 0 ;
- double normfact ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- normfact = (psf->norm_double == SF_TRUE) ? 1.0 / ((double) 0x8000) : 1.0 ;
-
- sptr = psf->u.sbuf ;
- bufferlen = SF_BUFFER_LEN / sizeof (short) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = g72x_read_block (psf, pg72x, 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 ;
-} /* g72x_read_d */
-
-static sf_count_t
-g72x_seek (SF_PRIVATE *psf, int UNUSED (mode), sf_count_t UNUSED (offset))
-{
- psf_log_printf (psf, "seek unsupported\n") ;
-
- /* No simple solution. To do properly, would need to seek
- ** to start of file and decode everything up to seek position.
- ** Maybe implement SEEK_SET to 0 only?
- */
- return 0 ;
-
-/*
-** G72x_PRIVATE *pg72x ;
-** int newblock, newsample, sample_curr ;
-**
-** if (psf->codec_data == NULL)
-** return 0 ;
-** pg72x = (G72x_PRIVATE*) psf->codec_data ;
-**
-** if (! (psf->datalength && psf->dataoffset))
-** { psf->error = SFE_BAD_SEEK ;
-** return PSF_SEEK_ERROR ;
-** } ;
-**
-** sample_curr = (8 * psf->datalength) / G721_32_BITS_PER_SAMPLE ;
-**
-** switch (whence)
-** { case SEEK_SET :
-** if (offset < 0 || offset > sample_curr)
-** { psf->error = SFE_BAD_SEEK ;
-** return PSF_SEEK_ERROR ;
-** } ;
-** newblock = offset / pg72x->samplesperblock ;
-** newsample = offset % pg72x->samplesperblock ;
-** break ;
-**
-** case SEEK_CUR :
-** if (psf->current + offset < 0 || psf->current + offset > sample_curr)
-** { psf->error = SFE_BAD_SEEK ;
-** return PSF_SEEK_ERROR ;
-** } ;
-** newblock = (8 * (psf->current + offset)) / pg72x->samplesperblock ;
-** newsample = (8 * (psf->current + offset)) % pg72x->samplesperblock ;
-** break ;
-**
-** case SEEK_END :
-** if (offset > 0 || sample_curr + offset < 0)
-** { psf->error = SFE_BAD_SEEK ;
-** return PSF_SEEK_ERROR ;
-** } ;
-** newblock = (sample_curr + offset) / pg72x->samplesperblock ;
-** newsample = (sample_curr + offset) % pg72x->samplesperblock ;
-** break ;
-**
-** default :
-** psf->error = SFE_BAD_SEEK ;
-** return PSF_SEEK_ERROR ;
-** } ;
-**
-** if (psf->file.mode == SFM_READ)
-** { psf_fseek (psf, psf->dataoffset + newblock * pg72x->blocksize, SEEK_SET) ;
-** pg72x->block_curr = newblock ;
-** psf_g72x_decode_block (psf, pg72x) ;
-** pg72x->sample_curr = newsample ;
-** }
-** else
-** { /+* What to do about write??? *+/
-** psf->error = SFE_BAD_SEEK ;
-** return PSF_SEEK_ERROR ;
-** } ;
-**
-** psf->current = newblock * pg72x->samplesperblock + newsample ;
-** return psf->current ;
-**
-*/
-} /* g72x_seek */
-
-/*==========================================================================================
-** G72x Write Functions.
-*/
-
-static int
-psf_g72x_encode_block (SF_PRIVATE *psf, G72x_PRIVATE *pg72x)
-{ int k ;
-
- /* Encode the samples. */
- g72x_encode_block (pg72x->private, pg72x->samples, pg72x->block) ;
-
- /* Write the block to disk. */
- if ((k = psf_fwrite (pg72x->block, 1, pg72x->blocksize, psf)) != pg72x->blocksize)
- psf_log_printf (psf, "*** Warning : short write (%d != %d).\n", k, pg72x->blocksize) ;
-
- pg72x->sample_curr = 0 ;
- pg72x->block_curr ++ ;
-
- /* Set samples to zero for next block. */
- memset (pg72x->samples, 0, G72x_BLOCK_SIZE * sizeof (short)) ;
-
- return 1 ;
-} /* psf_g72x_encode_block */
-
-static int
-g72x_write_block (SF_PRIVATE *psf, G72x_PRIVATE *pg72x, const short *ptr, int len)
-{ int count, total = 0, indx = 0 ;
-
- while (indx < len)
- { count = pg72x->samplesperblock - pg72x->sample_curr ;
-
- if (count > len - indx)
- count = len - indx ;
-
- memcpy (&(pg72x->samples [pg72x->sample_curr]), &(ptr [indx]), count * sizeof (short)) ;
- indx += count ;
- pg72x->sample_curr += count ;
- total = indx ;
-
- if (pg72x->sample_curr >= pg72x->samplesperblock)
- psf_g72x_encode_block (psf, pg72x) ;
- } ;
-
- return total ;
-} /* g72x_write_block */
-
-static sf_count_t
-g72x_write_s (SF_PRIVATE *psf, const short *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- int writecount, count ;
- sf_count_t total = 0 ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- while (len > 0)
- { writecount = (len > 0x10000000) ? 0x10000000 : (int) len ;
-
- count = g72x_write_block (psf, pg72x, ptr, writecount) ;
-
- total += count ;
- len -= count ;
- if (count != writecount)
- break ;
- } ;
-
- return total ;
-} /* g72x_write_s */
-
-static sf_count_t
-g72x_write_i (SF_PRIVATE *psf, const int *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- short *sptr ;
- int k, bufferlen, writecount = 0, count ;
- sf_count_t total = 0 ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- sptr = psf->u.sbuf ;
- bufferlen = ((SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth) / sizeof (short) ;
- while (len > 0)
- { writecount = (len >= bufferlen) ? bufferlen : len ;
- for (k = 0 ; k < writecount ; k++)
- sptr [k] = ptr [total + k] >> 16 ;
- count = g72x_write_block (psf, pg72x, sptr, writecount) ;
-
- total += count ;
- len -= writecount ;
- if (count != writecount)
- break ;
- } ;
- return total ;
-} /* g72x_write_i */
-
-static sf_count_t
-g72x_write_f (SF_PRIVATE *psf, const float *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- short *sptr ;
- int k, bufferlen, writecount = 0, count ;
- sf_count_t total = 0 ;
- float normfact ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- normfact = (psf->norm_float == SF_TRUE) ? (1.0 * 0x8000) : 1.0 ;
-
- sptr = psf->u.sbuf ;
- bufferlen = ((SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth) / sizeof (short) ;
- while (len > 0)
- { writecount = (len >= bufferlen) ? bufferlen : len ;
- for (k = 0 ; k < writecount ; k++)
- sptr [k] = lrintf (normfact * ptr [total + k]) ;
- count = g72x_write_block (psf, pg72x, sptr, writecount) ;
-
- total += count ;
- len -= writecount ;
- if (count != writecount)
- break ;
- } ;
-
- return total ;
-} /* g72x_write_f */
-
-static sf_count_t
-g72x_write_d (SF_PRIVATE *psf, const double *ptr, sf_count_t len)
-{ G72x_PRIVATE *pg72x ;
- short *sptr ;
- int k, bufferlen, writecount = 0, count ;
- sf_count_t total = 0 ;
- double normfact ;
-
- if (psf->codec_data == NULL)
- return 0 ;
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- normfact = (psf->norm_double == SF_TRUE) ? (1.0 * 0x8000) : 1.0 ;
-
- sptr = psf->u.sbuf ;
- bufferlen = ((SF_BUFFER_LEN / psf->blockwidth) * psf->blockwidth) / sizeof (short) ;
- while (len > 0)
- { writecount = (len >= bufferlen) ? bufferlen : len ;
- for (k = 0 ; k < writecount ; k++)
- sptr [k] = lrint (normfact * ptr [total + k]) ;
- count = g72x_write_block (psf, pg72x, sptr, writecount) ;
-
- total += count ;
- len -= writecount ;
- if (count != writecount)
- break ;
- } ;
-
- return total ;
-} /* g72x_write_d */
-
-static int
-g72x_close (SF_PRIVATE *psf)
-{ G72x_PRIVATE *pg72x ;
-
- pg72x = (G72x_PRIVATE*) psf->codec_data ;
-
- if (psf->file.mode == SFM_WRITE)
- { /* If a block has been partially assembled, write it out
- ** as the final block.
- */
-
- if (pg72x->sample_curr && pg72x->sample_curr < G72x_BLOCK_SIZE)
- psf_g72x_encode_block (psf, pg72x) ;
-
- if (psf->write_header)
- psf->write_header (psf, SF_FALSE) ;
- } ;
-
- /* Only free the pointer allocated by g72x_(reader|writer)_init. */
- free (pg72x->private) ;
-
- return 0 ;
-} /* g72x_close */
-
projects / Faustine.git / blobdiff