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/*
Sound audio library
Copyright (c) 1999 Pascal Hofstee & Alain Kalker
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id: info.c,v 1.8 1999/10/16 20:06:43 daeron Exp $
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <audiofile.h>
#include "wsound.h"
#include <assert.h>
SAudioFileInfo*
SGetAudioFileInfo(char *file)
{
SAudioFileInfo *afInfo;
AFfilehandle inFile;
char *path;
assert(file != NULL);
/* open audio file */
inFile = afOpenFile(file, "r", NULL);
if (!inFile) {
SErrorCode = SERR_AFOPEN;
return NULL;
}
/* duplicate path for internal storage */
path = strdup(file);
if (!path) {
SErrorCode = SERR_NOMEMORY;
return NULL;
}
/* aquire memory to store file info */
afInfo = malloc(sizeof(struct SAudioFileInfo));
if (!afInfo) {
afCloseFile(inFile);
SErrorCode = SERR_NOMEMORY;
return NULL;
}
afInfo->FileHandle = inFile;
afInfo->Path = path;
afInfo->FileFormat = afGetFileFormat(inFile, &afInfo->Version);
afGetSampleFormat(inFile, AF_DEFAULT_TRACK, &afInfo->SampleFormat, &afInfo->SampleWidth);
afInfo->SampleRate = afGetRate(inFile, AF_DEFAULT_TRACK);
afInfo->ByteOrder = afGetByteOrder(inFile, AF_DEFAULT_TRACK);
afInfo->Channels = afGetChannels(inFile, AF_DEFAULT_TRACK);
afInfo->FrameCount = afGetFrameCount(inFile, AF_DEFAULT_TRACK);
afInfo->TrackBytes = afGetTrackBytes(inFile, AF_DEFAULT_TRACK);
afInfo->DataOffset = afGetDataOffset(inFile, AF_DEFAULT_TRACK);
return afInfo;
}
void
SPrintAudioFileInfo(SAudioFileInfo *afInfo)
{
assert(afInfo != NULL);
fprintf(stderr, "AudioFile Information for %s\n", afInfo->Path);
fprintf(stderr, "File Format ");
switch (afInfo->FileFormat) {
case AF_FILE_AIFFC:
fprintf(stderr, "Audio Interchange File Format AIFF-C (aifc)");
break;
case AF_FILE_AIFF:
fprintf(stderr, "Audio Interchange File Format (aiff)");
break;
case AF_FILE_NEXTSND:
fprintf(stderr, "NeXT .snd/Sun .au Format (next)");
break;
case AF_FILE_WAVE:
fprintf(stderr, "MS RIFF WAVE Format (wave)");
break;
default:
fprintf(stderr, "Unknown file");
}
fprintf(stderr, "\n");
fprintf(stderr, "Data Format ");
switch (afInfo->SampleFormat) {
case AF_SAMPFMT_TWOSCOMP:
fprintf(stderr, "%d-bit integer (2's complement, %s)\n", afInfo->SampleWidth,
afInfo->ByteOrder == AF_BYTEORDER_BIGENDIAN ?
"big endian" : "little endian");
break;
case AF_SAMPFMT_UNSIGNED:
fprintf(stderr, "%d-bit integer (unsigned, %s)\n", afInfo->SampleWidth,
afInfo->ByteOrder == AF_BYTEORDER_BIGENDIAN ?
"big endian" : "little endian");
break;
case AF_SAMPFMT_FLOAT:
case AF_SAMPFMT_DOUBLE:
default:
fprintf(stderr, "Unsupported (%d)\n", afInfo->SampleFormat);
break;
}
fprintf(stderr, "Audio Data %ld bytes begins at offset %ld (%lx hex)\n",
afInfo->TrackBytes,
afInfo->DataOffset,
afInfo->DataOffset);
fprintf(stderr, " %d channel%s, %ld frames\n",
afInfo->Channels,
afInfo->Channels > 1 ? "s" : "",
afInfo->FrameCount);
fprintf(stderr, "Sampling Rate %.2f Hz\n", afInfo->SampleRate);
fprintf(stderr, "Duration %.2f seconds\n",
afInfo->FrameCount /
afInfo->SampleRate);
}
void
SDestroyAudioFileInfo(SAudioFileInfo *afInfo)
{
assert(afInfo != NULL);
afCloseFile(afInfo->FileHandle);
if (afInfo->Path)
free(afInfo->Path);
free(afInfo);
}
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