Mercurial > illumos > onarm
annotate usr/src/cmd/audio/utilities/AudioRawPipe.cc @ 4:1a15d5aaf794
synchronized with onnv_86 (6202) in onnv-gate
| author | Koji Uno <koji.uno@sun.com> |
|---|---|
| date | Mon, 31 Aug 2009 14:38:03 +0900 |
| parents | c9caec207d52 |
| children |
| rev | line source |
|---|---|
| 0 | 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 1991-2003 Sun Microsystems, Inc. All rights reserved. | |
| 24 * Use is subject to license terms. | |
| 25 */ | |
| 26 | |
|
4
1a15d5aaf794
synchronized with onnv_86 (6202) in onnv-gate
Koji Uno <koji.uno@sun.com>
parents:
0
diff
changeset
|
27 #pragma ident "%Z%%M% %I% %E% SMI" |
| 0 | 28 |
| 29 #include <stdlib.h> | |
| 30 #include <unistd.h> | |
| 31 #include <sys/stat.h> | |
| 32 | |
| 33 #include <AudioRawPipe.h> | |
| 34 #include <libaudio.h> | |
| 35 #include <audio_hdr.h> | |
| 36 | |
| 37 // class AudioPipe methods | |
| 38 | |
| 39 // Constructor with file descriptor, mode, and optional name | |
| 40 AudioRawPipe:: | |
| 41 AudioRawPipe( | |
| 42 const int desc, // file descriptor | |
| 43 const FileAccess acc, // access mode | |
| 44 const AudioHdr& hdr_local, // header | |
| 45 const char *name_local, // name | |
| 46 const off_t off // offset | |
| 47 ):AudioPipe(desc, acc, name_local), offset(off) | |
| 48 { | |
| 49 isopened = FALSE; | |
| 50 setfd(desc); | |
| 51 SetHeader(hdr_local); | |
| 52 } | |
| 53 | |
| 54 // The create routine for pipes writes a file header | |
| 55 AudioError AudioRawPipe:: | |
| 56 Create() | |
| 57 { | |
| 58 AudioError err; | |
| 59 | |
| 60 // Was the header properly set? | |
| 61 err = GetHeader().Validate(); | |
| 62 if (err != AUDIO_SUCCESS) | |
| 63 return (RaiseError(err)); | |
| 64 | |
| 65 // Open fd supplied by constructor | |
| 66 if (!isfdset() || opened()) { | |
| 67 return (RaiseError(AUDIO_ERR_NOEFFECT, Warning)); | |
| 68 } | |
| 69 | |
| 70 // set flag for opened() test | |
| 71 isopened = TRUE; | |
| 72 | |
| 73 // Set the actual output length to zero | |
| 74 setlength(0.); | |
| 75 | |
| 76 return (AUDIO_SUCCESS); | |
| 77 } | |
| 78 | |
| 79 // The open routine for raw pipes validates the header and | |
| 80 // init's the read pos to offset and sets the opened flag. | |
| 81 AudioError AudioRawPipe:: | |
| 82 Open() | |
| 83 { | |
| 84 AudioError err; | |
| 85 struct stat st; | |
| 86 | |
| 87 // The constructor should have supplied a valid fd | |
| 88 // If fd is not open, or file header already decoded, skip it | |
| 89 if (!isfdset() || opened()) | |
| 90 return (RaiseError(AUDIO_ERR_NOEFFECT, Warning)); | |
| 91 | |
| 92 // Stat the file, to see if it is a regular file | |
| 93 if (fstat(getfd(), &st) < 0) | |
| 94 return (RaiseError(AUDIO_UNIXERROR)); | |
| 95 | |
| 96 // check validity of file header | |
| 97 err = GetHeader().Validate(); | |
| 98 if (err != AUDIO_SUCCESS) { | |
| 99 (void) close(getfd()); | |
| 100 setfd(-1); | |
| 101 return (err); | |
| 102 } | |
| 103 | |
| 104 // Only trust the file size for regular files | |
| 105 if (S_ISREG(st.st_mode)) { | |
| 106 // for raw files - no hdr, so it's the whole file minus | |
| 107 // the offset. | |
| 108 setlength(GetHeader().Bytes_to_Time(st.st_size - offset)); | |
| 109 } else { | |
| 110 // don't know ... | |
| 111 setlength(AUDIO_UNKNOWN_TIME); | |
| 112 } | |
| 113 | |
| 114 // set flag for opened() test | |
| 115 isopened = TRUE; | |
| 116 | |
| 117 err = SetOffset(offset); | |
| 118 | |
| 119 // reset logical position to 0.0, since this is, in effect, | |
| 120 // the beginning of the file. | |
| 121 SetReadPosition(0.0, Absolute); | |
| 122 | |
| 123 return (err); | |
| 124 } | |
| 125 | |
| 126 Boolean AudioRawPipe:: | |
| 127 opened() const | |
| 128 { | |
| 129 return (isopened); | |
| 130 } | |
| 131 | |
| 132 AudioError AudioRawPipe:: | |
| 133 SetOffset(off_t val) | |
| 134 { | |
| 135 off_t setting = 0; | |
| 136 AudioError err; | |
| 137 | |
| 138 // only read only files for now | |
| 139 if (GetAccess().Writeable()) { | |
| 140 return (AUDIO_ERR_NOEFFECT); | |
| 141 } | |
| 142 | |
| 143 // only allow this if we haven't read anything yet (i.e. current | |
| 144 // position is 0). | |
| 145 if (ReadPosition() != 0.) { | |
| 146 return (AUDIO_ERR_NOEFFECT); | |
| 147 } | |
| 148 | |
| 149 if ((err = seekread(GetHeader().Bytes_to_Time(val), setting)) | |
| 150 != AUDIO_SUCCESS) { | |
| 151 return (err); | |
| 152 } | |
| 153 | |
| 154 // this should *never* happen 'cause seekread just sets setting | |
| 155 // to GetHeader().Time_to_Bytes.... | |
| 156 if (setting != val) { | |
| 157 // don't really know what error is apropos for this. | |
| 158 return (AUDIO_ERR_BADFRAME); | |
| 159 } | |
| 160 | |
| 161 offset = val; | |
| 162 return (AUDIO_SUCCESS); | |
| 163 } | |
| 164 | |
| 165 off_t AudioRawPipe:: | |
| 166 GetOffset() const | |
| 167 { | |
| 168 return (offset); | |
| 169 } |