usr/src/cmd/audio/utilities/AudioLib.cc

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1990-2001 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <Audio.h>
  30 #include <AudioFile.h>
  31 #include <AudioList.h>
  32 #include <AudioLib.h>
  33
  34 // Generic Audio functions
  35
  36
  37 // Open an audio file readonly, and return an AudioList referencing it.
  38 AudioError
  39 Audio_OpenInputFile(
  40         const char      *path,          // input filename
  41         Audio*&         ap)             // returned AudioList pointer
  42 {
  43         AudioFile*      inf;
  44         AudioList*      lp;
  45         AudioError      err;
  46
  47         // Open file and decode the header
  48         inf = new AudioFile(path, (FileAccess)ReadOnly);
  49         if (inf == 0)
  50                 return (AUDIO_UNIXERROR);
  51         err = inf->Open();
  52         if (err) {
  53                 delete inf;
  54                 return (err);
  55         }
  56
  57         // Create a list object and set it up to reference the file
  58         lp = new AudioList;
  59         if (lp == 0) {
  60                 delete inf;
  61                 return (AUDIO_UNIXERROR);
  62         }
  63         lp->Insert(inf);
  64         ap = lp;
  65         return (AUDIO_SUCCESS);
  66 }
  67
  68
  69 // Create an output file and copy an input stream to it.
  70 // If an error occurs during output, leave a partially written file.
  71 AudioError
  72 Audio_WriteOutputFile(
  73         const char      *path,          // output filename
  74         const AudioHdr& hdr,            // output data header
  75         Audio*          input)          // input data stream
  76 {
  77         AudioFile*      outf;
  78         AudioError      err;
  79
  80         // Create output file object
  81         outf = new AudioFile(path, (FileAccess)WriteOnly);
  82         if (outf == 0)
  83                 return (AUDIO_UNIXERROR);
  84
  85         // Set audio file header and create file
  86         if ((err = outf->SetHeader(hdr)) || (err = outf->Create())) {
  87                 delete outf;
  88                 return (err);
  89         }
  90
  91         // Copy data to file
  92         err = AudioCopy(input, outf);
  93
  94         // Close output file and clean up.  If error, leave partial file.
  95         delete outf;
  96         return (err);
  97 }