Oolite 1.91.0.7644-241112-7f5034b
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OOALStreamedSound.m
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1/*
2
3OOALStreamedSound.m
4
5
6OOALStreamedSound - OpenAL sound implementation for Oolite.
7Copyright (C) 2005-2013 Jens Ayton
8
9Permission is hereby granted, free of charge, to any person obtaining a copy
10of this software and associated documentation files (the "Software"), to deal
11in the Software without restriction, including without limitation the rights
12to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13copies of the Software, and to permit persons to whom the Software is
14furnished to do so, subject to the following conditions:
15
16The above copyright notice and this permission notice shall be included in all
17copies or substantial portions of the Software.
18
19THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25SOFTWARE.
26
27*/
28
29#import "OOALStreamedSound.h"
30#import "OOALSoundDecoder.h"
31
32@implementation OOALStreamedSound
33
34- (void)dealloc
35{
36 free(_buffer);
37 _buffer = NULL;
38 [decoder release];
39
40 [super dealloc];
41}
42
43- (NSString *)name
44{
45 return _name;
46}
47
48
49
50- (id)initWithDecoder:(OOALSoundDecoder *)inDecoder
51{
52 BOOL OK = YES;
53
54 [OOSound setUp];
55 if (![OOSound isSoundOK] || nil == inDecoder) OK = NO;
56
57 if (OK)
58 {
59 self = [super init];
60 if (nil == self) OK = NO;
61 }
62
63 if (OK)
64 {
65 _name = [[inDecoder name] copy];
66 _sampleRate = [inDecoder sampleRate];
67 _stereo = [inDecoder isStereo];
68 _reachedEnd = NO;
70 decoder = [inDecoder retain];
71 [self rewind];
72 }
73
74 if (!OK)
75 {
76 [self release];
77 self = nil;
78 }
79 return self;
80}
81
82
83- (void) rewind
84{
85 [decoder reset];
86 _reachedEnd = NO;
87}
88
89
90- (BOOL) soundIncomplete
91{
92 return !_reachedEnd;
93}
94
95
96- (ALuint) soundBuffer
97{
98 size_t transferred = [decoder streamToBuffer:_buffer];
99 if (transferred < OOAL_STREAM_CHUNK_SIZE)
100 {
101 // otherwise keep going
102 _reachedEnd = YES;
103 }
104
105 ALuint buffer;
106 ALint error;
107 OOAL(alGenBuffers(1,&buffer));
108 if ((error = alGetError()) != AL_NO_ERROR)
109 {
110 OOLog(kOOLogSoundLoadingError, @"%@", @"Could not create OpenAL buffer");
111 return 0;
112 }
113 else
114 {
115 if (!_stereo)
116 {
117 alBufferData(buffer, AL_FORMAT_MONO16, _buffer, (ALsizei)transferred, _sampleRate);
118 }
119 else
120 {
121 alBufferData(buffer, AL_FORMAT_STEREO16, _buffer, (ALsizei)transferred, _sampleRate);
122 }
123 return buffer;
124 }
125}
126
127@end
#define OOAL_STREAM_CHUNK_SIZE
#define OOLog(class, format,...)
Definition OOLogging.h:88
static NSString *const kOOLogSoundLoadingError
#define OOAL(cmd)
Definition OOOpenAL.h:40
return nil
OOALSoundDecoder * decoder
BOOL isSoundOK()
Definition OOALSound.m:156
BOOL setUp()
Definition OOALSound.m:46