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Initial public release of the 2024A software.

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Joe Kearney 2025-01-25 14:04:42 -06:00
parent 7b9ad3edfd
commit 303e9e1dad
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managed_components/chmorgan__esp-libhelix-mp3/libhelix-mp3/testwrap/main.c Normal file
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/* ***** BEGIN LICENSE BLOCK *****
* Version: RCSL 1.0/RPSL 1.0
*
* Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
*
* The contents of this file, and the files included with this file, are
* subject to the current version of the RealNetworks Public Source License
* Version 1.0 (the "RPSL") available at
* http://www.helixcommunity.org/content/rpsl unless you have licensed
* the file under the RealNetworks Community Source License Version 1.0
* (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
* in which case the RCSL will apply. You may also obtain the license terms
* directly from RealNetworks. You may not use this file except in
* compliance with the RPSL or, if you have a valid RCSL with RealNetworks
* applicable to this file, the RCSL. Please see the applicable RPSL or
* RCSL for the rights, obligations and limitations governing use of the
* contents of the file.
*
* This file is part of the Helix DNA Technology. RealNetworks is the
* developer of the Original Code and owns the copyrights in the portions
* it created.
*
* This file, and the files included with this file, is distributed and made
* available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
*
* Technology Compatibility Kit Test Suite(s) Location:
* http://www.helixcommunity.org/content/tck
*
* Contributor(s):
*
* ***** END LICENSE BLOCK ***** */
/**************************************************************************************
* Fixed-point MP3 decoder
* Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com)
* June 2003
*
* main.c - command-line test app that uses C interface to MP3 decoder
**************************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "mp3dec.h"
#include "debug.h"
#include "timing.h"
#define READBUF_SIZE (1024*16) /* feel free to change this, but keep big enough for >= one frame at high bitrates */
#define MAX_ARM_FRAMES 100
#define ARMULATE_MUL_FACT 1
static int FillReadBuffer(unsigned char *readBuf, unsigned char *readPtr, int bufSize, int bytesLeft, FILE *infile)
{
int nRead;
/* move last, small chunk from end of buffer to start, then fill with new data */
memmove(readBuf, readPtr, bytesLeft);
nRead = fread(readBuf + bytesLeft, 1, bufSize - bytesLeft, infile);
/* zero-pad to avoid finding false sync word after last frame (from old data in readBuf) */
if (nRead < bufSize - bytesLeft)
memset(readBuf + bytesLeft + nRead, 0, bufSize - bytesLeft - nRead);
return nRead;
}
int main(int argc, char **argv)
{
int bytesLeft, nRead, err, offset, outOfData, eofReached;
unsigned char readBuf[READBUF_SIZE], *readPtr;
short outBuf[MAX_NCHAN * MAX_NGRAN * MAX_NSAMP];
FILE *infile, *outfile;
MP3FrameInfo mp3FrameInfo;
HMP3Decoder hMP3Decoder;
int startTime, endTime, diffTime, totalDecTime, nFrames;
#ifdef ARM_ADS
float audioSecs;
#endif
if (argc != 3) {
printf("usage: mp3dec infile.mp3 outfile.pcm\n");
return -1;
}
infile = fopen(argv[1], "rb");
if (!infile) {
printf("file open error\n");
return -1;
}
if (strcmp(argv[2], "nul")) {
outfile = fopen(argv[2], "wb");
if (!outfile) {
printf("file open error\n");
return -1;
}
} else {
outfile = 0; /* nul output */
}
DebugMemCheckInit();
InitTimer();
DebugMemCheckStartPoint();
if ( (hMP3Decoder = MP3InitDecoder()) == 0 )
return -2;
DebugMemCheckEndPoint();
bytesLeft = 0;
outOfData = 0;
eofReached = 0;
readPtr = readBuf;
nRead = 0;
totalDecTime = 0;
nFrames = 0;
do {
/* somewhat arbitrary trigger to refill buffer - should always be enough for a full frame */
if (bytesLeft < 2*MAINBUF_SIZE && !eofReached) {
nRead = FillReadBuffer(readBuf, readPtr, READBUF_SIZE, bytesLeft, infile);
bytesLeft += nRead;
readPtr = readBuf;
if (nRead == 0)
eofReached = 1;
}
/* find start of next MP3 frame - assume EOF if no sync found */
offset = MP3FindSyncWord(readPtr, bytesLeft);
if (offset < 0) {
outOfData = 1;
break;
}
readPtr += offset;
bytesLeft -= offset;
/* decode one MP3 frame - if offset < 0 then bytesLeft was less than a full frame */
startTime = ReadTimer();
err = MP3Decode(hMP3Decoder, &readPtr, &bytesLeft, outBuf, 0);
nFrames++;
endTime = ReadTimer();
diffTime = CalcTimeDifference(startTime, endTime);
totalDecTime += diffTime;
#if defined ARM_ADS && defined MAX_ARM_FRAMES
printf("frame %5d start = %10d, end = %10d elapsed = %10d ticks\r",
nFrames, startTime, endTime, diffTime);
fflush(stdout);
#endif
if (err) {
/* error occurred */
switch (err) {
case ERR_MP3_INDATA_UNDERFLOW:
outOfData = 1;
break;
case ERR_MP3_MAINDATA_UNDERFLOW:
/* do nothing - next call to decode will provide more mainData */
break;
case ERR_MP3_FREE_BITRATE_SYNC:
default:
outOfData = 1;
break;
}
} else {
/* no error */
MP3GetLastFrameInfo(hMP3Decoder, &mp3FrameInfo);
if (outfile)
fwrite(outBuf, mp3FrameInfo.bitsPerSample / 8, mp3FrameInfo.outputSamps, outfile);
}
#if defined ARM_ADS && defined MAX_ARM_FRAMES
if (nFrames >= MAX_ARM_FRAMES)
break;
#endif
} while (!outOfData);
#ifdef ARM_ADS
MP3GetLastFrameInfo(hMP3Decoder, &mp3FrameInfo);
audioSecs = ((float)nFrames * mp3FrameInfo.outputSamps) / ( (float)mp3FrameInfo.samprate * mp3FrameInfo.nChans);
printf("\nTotal clock ticks = %d, MHz usage = %.2f\n", totalDecTime, ARMULATE_MUL_FACT * (1.0f / audioSecs) * totalDecTime * GetClockDivFactor() / 1e6f);
printf("nFrames = %d, output samps = %d, sampRate = %d, nChans = %d\n", nFrames, mp3FrameInfo.outputSamps, mp3FrameInfo.samprate, mp3FrameInfo.nChans);
#endif
MP3FreeDecoder(hMP3Decoder);
fclose(infile);
if (outfile)
fclose(outfile);
FreeTimer();
DebugMemCheckFree();
return 0;
}