ref: 76d0b2b421323224cfbeb232375c3b69ff5f9ed3
dir: /frontend/main.c/
/*
* FAAC - Freeware Advanced Audio Coder
* Copyright (C) 2001 Menno Bakker
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: main.c,v 1.21 2001/06/09 14:33:26 menno Exp $
*/
#ifdef _WIN32
#include <windows.h>
#endif
#ifdef __unix__
#define min(a,b) ( (a) < (b) ? (a) : (b) )
#include <sys/time.h>
#include <sys/resource.h>
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sndfile.h>
#include <getopt.h>
#include <faac.h>
/* globals */
char* progName;
int main(int argc, char *argv[])
{
int i, frames, currentFrame;
faacEncHandle hEncoder;
SNDFILE *infile;
SF_INFO sfinfo;
unsigned int sr, chan;
unsigned long samplesInput, maxBytesOutput;
faacEncConfigurationPtr myFormat;
unsigned int mpegVersion = MPEG2;
unsigned int objectType = LOW;
unsigned int useMidSide = 1;
unsigned int useTns = 0;
unsigned int cutOff = 18000;
unsigned long bitRate = 64000;
char *audioFileName;
char *aacFileName;
char percent[200];
short *pcmbuf;
unsigned char *bitbuf;
int bytesInput = 0;
FILE *outfile;
#ifdef __unix__
struct rusage usage;
#endif
#ifdef _WIN32
long begin, end;
int nTotSecs, nSecs;
int nMins;
#else
float totalSecs;
int mins;
#endif
fprintf(stderr, "FAAC - command line demo of %s\n", __DATE__);
fprintf(stderr, "Uses FAACLIB version: %.1f %s\n\n", FAACENC_VERSION, (FAACENC_VERSIONB)?"beta":"");
/* begin process command line */
progName = argv[0];
while (1) {
int c = -1;
int option_index = 0;
static struct option long_options[] = {
{ "mpeg", 0, 0, 'm' },
{ "objecttype", 0, 0, 'o' },
{ "nomidside", 0, 0, 'n' },
{ "usetns", 0, 0, 't' },
{ "cutoff", 1, 0, 'c' },
{ "bitrate", 1, 0, 'b' }
};
c = getopt_long(argc, argv, "m:o:ntc:b:",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'm': {
unsigned int i;
if (optarg) {
if (sscanf(optarg, "%u", &i) < 1) {
mpegVersion = MPEG2;
} else {
if (i == 2)
mpegVersion = MPEG2;
else
mpegVersion = MPEG4;
}
} else {
mpegVersion = MPEG2;
}
break;
}
case 'o': {
unsigned char i[10];
if (optarg) {
if (sscanf(optarg, "%s", i) < 1) {
objectType = LOW;
} else {
if (strcmpi(i, "MAIN") == 0)
objectType = MAIN;
else if (strcmpi(i, "LTP") == 0)
objectType = LTP;
else
objectType = LOW;
}
} else {
objectType = LOW;
}
break;
}
case 'n': {
useMidSide = 0;
break;
}
case 't': {
useTns = 1;
break;
}
case 'c': {
unsigned int i;
if (sscanf(optarg, "%u", &i) < 1) {
cutOff = 18000;
} else {
cutOff = i;
}
break;
}
case 'b': {
unsigned int i;
if (sscanf(optarg, "%u", &i) < 1) {
bitRate = 64000;
} else {
bitRate = i;
}
break;
}
case '?':
break;
default:
fprintf(stderr, "%s: unknown option specified, ignoring: %c\n",
progName, c);
}
}
/* check that we have at least two non-option arguments */
if ((argc - optind) < 2)
{
fprintf(stderr, "USAGE: %s -options infile outfile\n", progName);
fprintf(stderr, "Options:\n");
fprintf(stderr, " -m X AAC MPEG version, X can be 2 or 4.\n");
fprintf(stderr, " -o X AAC object type, X can be LC, MAIN or LTP.\n");
fprintf(stderr, " -n Don\'t use mid/side coding.\n");
fprintf(stderr, " -t Use TNS coding.\n");
fprintf(stderr, " -c X Set the bandwidth, X in Hz.\n");
fprintf(stderr, " -b X Set the bitrate per channel, X in bps.\n\n");
return 1;
}
/* point to the specified file names */
audioFileName = argv[optind++];
aacFileName = argv[optind++];
/* open the audio input file */
infile = sf_open_read(audioFileName, &sfinfo);
if (infile == NULL)
{
fprintf(stderr, "Couldn't open input file %s\n", audioFileName);
return 1;
}
/* open the aac output file */
outfile = fopen(aacFileName, "wb");
if (!outfile)
{
fprintf(stderr, "Couldn't create output file %s\n", aacFileName);
return 1;
}
/* determine input file parameters */
sr = sfinfo.samplerate;
chan = sfinfo.channels;
/* open the encoder library */
hEncoder = faacEncOpen(sr, chan, &samplesInput, &maxBytesOutput);
pcmbuf = (short*)malloc(samplesInput*sizeof(short));
bitbuf = (unsigned char*)malloc(maxBytesOutput*sizeof(unsigned char));
/* put the options in the configuration struct */
myFormat = faacEncGetCurrentConfiguration(hEncoder);
myFormat->aacObjectType = objectType;
myFormat->mpegVersion = mpegVersion;
myFormat->useTns = useTns;
myFormat->allowMidside = useMidSide;
myFormat->bitRate = bitRate;
myFormat->bandWidth = cutOff;
if (!faacEncSetConfiguration(hEncoder, myFormat)) {
fprintf(stderr, "Unsupported output format!\n");
return 1;
}
if (outfile)
{
#ifdef _WIN32
begin = GetTickCount();
#endif
frames = (int)(sfinfo.samples/1024+0.5);
currentFrame = 0;
/* encoding loop */
for ( ;; )
{
int bytesWritten;
currentFrame++;
bytesInput = sf_read_short(infile, pcmbuf, samplesInput) * sizeof(short);
/* call the actual encoding routine */
bytesWritten = faacEncEncode(hEncoder,
pcmbuf,
bytesInput/2,
bitbuf,
maxBytesOutput);
#ifndef _DEBUG
sprintf(percent, "%.2f encoding %s.",
min((double)(currentFrame*100)/frames,100), audioFileName);
fprintf(stderr, "%s\r", percent);
#endif
#ifdef _WIN32
SetConsoleTitle(percent);
#endif
/* all done, bail out */
if (!bytesInput && !bytesWritten)
break ;
if (bytesWritten < 0)
{
fprintf(stderr, "faacEncEncode() failed\n");
break ;
}
/* write bitstream to aac file */
fwrite(bitbuf, 1, bytesWritten, outfile);
}
/* clean up */
fclose(outfile);
#ifdef _WIN32
end = GetTickCount();
nTotSecs = (end-begin)/1000;
nMins = nTotSecs / 60;
nSecs = nTotSecs - (60*nMins);
fprintf(stderr, "Encoding %s took:\t%d:%.2d\t\n", audioFileName, nMins, nSecs);
#else
#ifdef __unix__
if (getrusage(RUSAGE_SELF, &usage) == 0) {
totalSecs=usage.ru_utime.tv_sec;
mins = totalSecs/60;
fprintf(stderr, "Encoding %s took: %i min, %.2f sec. of cpu-time\n",
audioFileName, mins, totalSecs - (60 * mins));
}
#else
totalSecs = (float)(clock())/(float)CLOCKS_PER_SEC;
mins = totalSecs/60;
fprintf(stderr, "Encoding %s took: %i min, %.2f sec.\n",
audioFileName, mins, totalSecs - (60 * mins));
#endif
#endif
}
faacEncClose(hEncoder);
sf_close(infile);
if (pcmbuf) free(pcmbuf);
if (bitbuf) free(bitbuf);
return 0;
}