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/*
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.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.
**
** Any non-GPL usage of this software or parts of this software is strictly
** forbidden.
**
** Commercial non-GPL licensing of this software is possible.
** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
**
** $Id: utils.c,v 1.3 2003/12/06 04:24:17 rjamorim Exp $
**/
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <mp4.h>
#include <faad.h>
#include "utils.h"
int StringComp(char const *str1, char const *str2, unsigned long len)
{
signed int c1 = 0, c2 = 0;
while (len--)
{
c1 = tolower(*str1++);
c2 = tolower(*str2++);
if (c1 == 0 || c1 != c2)
break;
}
return c1 - c2;
}
int GetAACTrack(MP4FileHandle infile)
{
/* find AAC track */
int i, rc;
int numTracks = MP4GetNumberOfTracks(infile, NULL, 0);
for (i = 0; i < numTracks; i++)
{
MP4TrackId trackId = MP4FindTrackId(infile, i, NULL, 0);
const char* trackType = MP4GetTrackType(infile, trackId);
if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE))
{
unsigned char *buff = NULL;
int buff_size = 0;
mp4AudioSpecificConfig mp4ASC;
MP4GetTrackESConfiguration(infile, trackId, &buff, &buff_size);
if (buff)
{
rc = AudioSpecificConfig(buff, buff_size, &mp4ASC);
free(buff);
if (rc < 0)
return -1;
return trackId;
}
}
}
/* can't decode this */
return -1;
}
int GetAudioTrack(MP4FileHandle infile)
{
/* find AAC track */
int i;
int numTracks = MP4GetNumberOfTracks(infile, NULL, 0);
for (i = 0; i < numTracks; i++)
{
MP4TrackId trackId = MP4FindTrackId(infile, i, NULL, 0);
const char* trackType = MP4GetTrackType(infile, trackId);
if (!strcmp(trackType, MP4_AUDIO_TRACK_TYPE))
{
return trackId;
}
}
/* can't decode this */
return -1;
}
int GetVideoTrack(MP4FileHandle infile)
{
/* find AAC track */
int i;
int numTracks = MP4GetNumberOfTracks(infile, NULL, 0);
for (i = 0; i < numTracks; i++)
{
MP4TrackId trackId = MP4FindTrackId(infile, i, NULL, 0);
const char* trackType = MP4GetTrackType(infile, trackId);
if (!strcmp(trackType, MP4_VIDEO_TRACK_TYPE))
{
return trackId;
}
}
/* can't decode this */
return -1;
}
LPTSTR PathFindFileName(LPCTSTR pPath)
{
LPCTSTR pT;
for (pT = pPath; *pPath; pPath = CharNext(pPath)) {
if ((pPath[0] == TEXT('\\') || pPath[0] == TEXT(':')) && pPath[1] && (pPath[1] != TEXT('\\')))
pT = pPath + 1;
}
return (LPTSTR)pT; // const -> non const
}
char *convert3in4to3in3(void *sample_buffer, int samples)
{
int i;
long *sample_buffer24 = (long*)sample_buffer;
char *data = malloc(samples*3*sizeof(char));
for (i = 0; i < samples; i++)
{
data[i*3] = sample_buffer24[i] & 0xFF;
data[i*3+1] = (sample_buffer24[i] >> 8) & 0xFF;
data[i*3+2] = (sample_buffer24[i] >> 16) & 0xFF;
}
return data;
}
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