/*                                                     -*- linux-c -*-    Copyright (C) 2005 Tom Szilagyi    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., 675 Mass Ave, Cambridge, MA 02139, USA.    $Id: dec_sndfile.c,v 1.6 2006/09/16 16:06:27 peterszilagyi Exp $*/#include <config.h>#include <stdio.h>#include <stdlib.h>#include "dec_sndfile.h"#ifdef HAVE_SNDFILE/* list of accepted file extensions */char * valid_extensions_sndfile[] = {        "wav", "aiff", "au", "w64", "voc", "xi", "htk", "svx", NULL};decoder_t *sndfile_decoder_init(file_decoder_t * fdec) {        decoder_t * dec = NULL;        if ((dec = calloc(1, sizeof(decoder_t))) == NULL) {                fprintf(stderr, "dec_sndfile.c: sndfile_decoder_new() failed: calloc error\n");                return NULL;        }	dec->fdec = fdec;        if ((dec->pdata = calloc(1, sizeof(sndfile_pdata_t))) == NULL) {                fprintf(stderr, "dec_sndfile.c: sndfile_decoder_new() failed: calloc error\n");                return NULL;        }	dec->init = sndfile_decoder_init;	dec->destroy = sndfile_decoder_destroy;	dec->open = sndfile_decoder_open;	dec->close = sndfile_decoder_close;	dec->read = sndfile_decoder_read;	dec->seek = sndfile_decoder_seek;	return dec;}voidsndfile_decoder_destroy(decoder_t * dec) {	free(dec->pdata);	free(dec);}intsndfile_decoder_open(decoder_t * dec, char * filename) {	sndfile_pdata_t * pd = (sndfile_pdata_t *)dec->pdata;	file_decoder_t * fdec = dec->fdec;	pd->sf_info.format = 0;        if ((pd->sf = sf_open(filename, SFM_READ, &(pd->sf_info))) == NULL) {		return DECODER_OPEN_BADLIB;	}#ifdef HAVE_NEW_SNDFILE	/* XXX don't use the FLAC decoder in sndfile, seeking seems to be buggy */	/* the native FLAC decoder will catch the file instead. */	if ((pd->sf_info.format & SF_FORMAT_TYPEMASK) == SF_FORMAT_FLAC) {		sf_close(pd->sf);		return DECODER_OPEN_BADLIB;	}#endif	if ((pd->sf_info.channels != 1) && (pd->sf_info.channels != 2)) {		fprintf(stderr,			"sndfile_decoder_open: sndfile with %d channels is unsupported\n",			pd->sf_info.channels);		return DECODER_OPEN_FERROR;	}	fdec->channels = pd->sf_info.channels;	fdec->SR = pd->sf_info.samplerate;	fdec->file_lib = SNDFILE_LIB;		fdec->fileinfo.total_samples = pd->sf_info.frames;	fdec->fileinfo.format_major = pd->sf_info.format & SF_FORMAT_TYPEMASK;	fdec->fileinfo.format_minor = pd->sf_info.format & SF_FORMAT_SUBMASK;		switch (fdec->fileinfo.format_minor) {	case SF_FORMAT_PCM_S8:	case SF_FORMAT_PCM_U8:		fdec->fileinfo.bps = 8;		break;	case SF_FORMAT_PCM_16:		fdec->fileinfo.bps = 16;		break;	case SF_FORMAT_PCM_24:		fdec->fileinfo.bps = 24;		break;	case SF_FORMAT_PCM_32:	case SF_FORMAT_FLOAT:		fdec->fileinfo.bps = 32;		break;	case SF_FORMAT_DOUBLE:		fdec->fileinfo.bps = 64;		break;	default:		/* XXX libsndfile knows some more formats apart from the ones above,		   but i don't know their bits/sample... perhaps i'm stupid. --tszilagyi */		fdec->fileinfo.bps = 0;		break;	}	fdec->fileinfo.bps *= fdec->SR * fdec->channels;			return DECODER_OPEN_SUCCESS;}voidsndfile_decoder_close(decoder_t * dec) {	sndfile_pdata_t * pd = (sndfile_pdata_t *)dec->pdata;	sf_close(pd->sf);}unsigned intsndfile_decoder_read(decoder_t * dec, float * dest, int num) {	sndfile_pdata_t * pd = (sndfile_pdata_t *)dec->pdata;	file_decoder_t * fdec = dec->fdec;	int i;	unsigned int numread = 0;	numread = sf_readf_float(pd->sf, dest, num);	for (i = 0; i < numread; i++) {		dest[i] *= fdec->voladj_lin;	}	return numread;}voidsndfile_decoder_seek(decoder_t * dec, unsigned long long seek_to_pos) {		sndfile_pdata_t * pd = (sndfile_pdata_t *)dec->pdata;	file_decoder_t * fdec = dec->fdec;	if ((pd->nframes = sf_seek(pd->sf, seek_to_pos, SEEK_SET)) != -1) {		fdec->samples_left = fdec->fileinfo.total_samples - pd->nframes;	} else {		fprintf(stderr, "sndfile_decoder_seek: warning: sf_seek() failed\n");	}}#elsedecoder_t *sndfile_decoder_init(file_decoder_t * fdec) {	return NULL;}#endif /* HAVE_SNDFILE */// vim: shiftwidth=8:tabstop=8:softtabstop=8 :