mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-03-29 00:59:39 +00:00
a745fc3757
added libraries: opus flac libsndfile updated: libvorbis libogg openal - Everything works as expected for now. Bare in mind libsndfile needed the check for whether or not it could find the xiph libraries removed in order for this to work.
107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/*
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** Copyright (C) 1999-2012 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "sfconfig.h"
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#include <stdio.h>
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#include <stdlib.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#else
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#include "sf_unistd.h"
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#endif
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#include <string.h>
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#include <errno.h>
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#include "common.h"
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typedef struct
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{ int le_float ;
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int be_float ;
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int le_int_24_32 ;
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int be_int_24_32 ;
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} VOTE ;
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static void vote_for_format (VOTE * vote, const unsigned char * data, int datalen) ;
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int
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audio_detect (SF_PRIVATE * psf, AUDIO_DETECT *ad, const unsigned char * data, int datalen)
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{ VOTE vote ;
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if (psf == NULL)
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return 0 ;
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if (ad == NULL || datalen < 256)
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return 0 ;
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vote_for_format (&vote, data, datalen) ;
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psf_log_printf (psf, "audio_detect :\n"
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" le_float : %d\n"
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" be_float : %d\n"
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" le_int_24_32 : %d\n"
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" be_int_24_32 : %d\n",
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vote.le_float, vote.be_float, vote.le_int_24_32, vote.be_int_24_32) ;
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if (0) puts (psf->parselog.buf) ;
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if (ad->endianness == SF_ENDIAN_LITTLE && vote.le_float > (3 * datalen) / 4)
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{ /* Almost certainly 32 bit floats. */
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return SF_FORMAT_FLOAT ;
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} ;
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if (ad->endianness == SF_ENDIAN_LITTLE && vote.le_int_24_32 > (3 * datalen) / 4)
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{ /* Almost certainly 24 bit data stored in 32 bit ints. */
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return SF_FORMAT_PCM_32 ;
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} ;
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return 0 ;
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} /* data_detect */
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static void
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vote_for_format (VOTE * vote, const unsigned char * data, int datalen)
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{
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int k ;
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memset (vote, 0, sizeof (VOTE)) ;
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datalen -= datalen % 4 ;
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for (k = 0 ; k < datalen ; k ++)
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{ if ((k % 4) == 0)
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{ if (data [k] == 0 && data [k + 1] != 0)
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vote->le_int_24_32 += 4 ;
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if (data [2] != 0 && data [3] == 0)
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vote->le_int_24_32 += 4 ;
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if (data [0] != 0 && data [3] > 0x43 && data [3] < 0x4B)
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vote->le_float += 4 ;
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if (data [3] != 0 && data [0] > 0x43 && data [0] < 0x4B)
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vote->be_float += 4 ;
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} ;
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} ;
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return ;
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} /* vote_for_format */
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