SDL::Mixer(3pm)

1SDL::Mixer(3)         User Contributed Perl Documentation        SDL::Mixer(3)
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NAME

6       SDL::Mixer - Sound and music functions
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CONSTANTS

12       The constants are exported by default. You can avoid this by doing:
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14        use SDL::Mixer ();
15
16       and access them directly:
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18        SDL::Mixer::MIX_DEFAULT_FREQUENCY;
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20       or by choosing the export tags below:
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22       Export tag: ':init'
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24        MIX_INIT_FLAC
25        MIX_INIT_MOD
26        MIX_INIT_MP3
27        MIX_INIT_OGG
28
29       Export tag: ':defaults'
30
31        MIX_CHANNELS
32        MIX_DEFAULT_FORMAT
33        MIX_DEFAULT_FREQUENCY
34        MIX_DEFAULT_CHANNELS
35        MIX_MAX_VOLUME
36        MIX_CHANNEL_POST
37
38       Export tag: ':fading'
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40        MIX_NO_FADING
41        MIX_FADING_OUT
42        MIX_FADING_IN
43
44       Export tag: ':type'
45
46        MUS_NONE
47        MUS_CMD
48        MUS_WAV
49        MUS_MOD
50        MUS_MID
51        MUS_OGG
52        MUS_MP3
53        MUS_MP3_MAD
54        MUS_MP3_FLAC
55
56       Export tag: ':format'
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58        AUDIO_U8
59        AUDIO_S8
60        AUDIO_U16LSB
61        AUDIO_S16LSB
62        AUDIO_U16MSB
63        AUDIO_S16MSB
64        AUDIO_U16
65        AUDIO_S16
66        AUDIO_U16SYS
67        AUDIO_S16SYS
68
69       Export tag: ':status'
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71        SDL_AUDIO_STOPPED
72        SDL_AUDIO_PLAYING
73        SDL_AUDIO_PAUSED
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DESCRIPTION

76       SDL::Mixer allows you to enable sound, alter music volume settings, and
77       lets you play, pause and resume, as well as fading the sound and music
78       in and out.
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80   Supported Formats
81       The SDL Mixer library is a multi-channel audio mixer. It supports 8
82       channels of 16 bit stereo audio, and a single channel for music.
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84       You can use the channels to load samples (i.e. sound effects) in the
85       following formats:
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87       ·   Microsoft WAVE files (WAV)
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89       ·   Creative Labs VOC files (VOC)
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91       ·   MIDI files (if compiled with Timidity)
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93       If you use MIDI, you should note that the process of mixing MIDI files
94       to wave output is very CPU-intensive, so if playing regular WAVE files
95       sound great, but playing MIDI files sound choppy, try using 8-bit
96       audio, mono audio, or lower frequencies.
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98       The music channel can play the following formats:
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100       ·   AIFF
101
102       ·   MOD (.mod .xm .s3m .669 .it .med and more - if compiled with
103           libmikmod)
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105       ·   OggVorbis (.ogg - if compiled with ogg/vorbis libraries)
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107       ·   MP3 (if compiled with SMPEG or MAD libraries)
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109       ·   FLAC (if compiled with FLAC library)
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METHODS

112   init
113        my $init_flags = SDL::Mixer::init( $flags );
114
115       Loads dynamic libraries and prepares them for use. Flags should be one
116       or more flags from init flags OR'd together.  It returns the flags
117       successfully initialized, or 0 on failure.
118
119       Example:
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121        use SDL::Mixer;
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123        my $init_flags = SDL::Mixer::init( MIX_INIT_MP3 | MIX_INIT_MOD | MIX_INIT_FLAC | MIX_INIT_OGG );
124
125        print("We have MP3 support!\n")  if $init_flags & MIX_INIT_MP3;
126        print("We have MOD support!\n")  if $init_flags & MIX_INIT_MOD;
127        print("We have FLAC support!\n") if $init_flags & MIX_INIT_FLAC;
128        print("We have OGG support!\n")  if $init_flags & MIX_INIT_OGG;
129
130       Flags:
131
132       ·   MIX_INIT_MP3
133
134       ·   MIX_INIT_MOD
135
136       ·   MIX_INIT_FLAC
137
138       ·   MIX_INIT_OGG
139
140       Note: Only available for SDL_mixer >= 1.2.10
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142   quit
143        SDL::Mixer::quit();
144
145       This function unloads the libraries previously loaded with init().
146
147       Note: Only available for SDL_mixer >= 1.2.10
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149   linked_version
150        $version = SDL::Mixer::linked_version();
151
152       "linked_version" gives you the major-, minor-, and patchlevel for
153       SDL_mixer. This way you can check if e.g. init() and quit() are
154       available.
155
156       Example:
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158        use SDL::Mixer;
159        use SDL::Version;
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161        my $version = SDL::Mixer::linked_version();
162
163        printf("%d.%d.%d\n", $version->major, $version->minor, $version->patch); # prints "1.2.8" for me
164
165   open_audio
166        my $audio_opened = SDL::Mixer::open_audio( $frequency, $format, $channels, $chunksize );
167
168       "open_audio" will initialize SDL_mixer if it is not yet initialized,
169       see note. SDL_mixer may not be able to provide the exact specifications
170       your provided, however it will automatically translate between the
171       expected format and the real one. You can retrieve the real format
172       using query_spec.
173
174       Returns 0 on success, -1 on error.
175
176       Note: You must not use "AUDIO_S16", "AUDIO_U16", "AUDIO_S16LSB", or
177       "AUDIO_U16LSB." They are not portable, and SDL will not return an error
178       code when they fail. The result will be a horrible staticy noise. You
179       can usually use "AUDIO_S16SYS", though not always. Future versions of
180       SDL should take this parameter only as a hint, then read back the value
181       that the OS (for example, OSS or ALSA) has chosen to use in case the
182       desired audio type is not supported.
183
184       Note: When already initialized, this function will not re-initialize
185       SDL_mixer, nor fail. It will merely increment the number of times
186       SDL::Mixer::close_audio must be called to actually get it to
187       uninitialize. This serves as a very simplistic method for multiple
188       application components to use SDL_mixer without necessitating a great
189       deal of inter-component awareness. Be warned however that in such a
190       situation, the latest components to initialize SDL_mixer will probably
191       not get the SDL_mixer settings they're expecting.
192
193       Example:
194
195        use SDL;
196        use SDL::Mixer;
197
198        printf("Error initializing SDL_mixer: %s\n", SDL::get_error()) unless SDL::Mixer::open_audio(44100, AUDIO_S16, 2, 1024) == 0;
199
200   close_audio
201        SDL::Mixer::close_audio();
202
203       Close the mixer and halting all playing audio. This function does not
204       return anything.
205
206   query_spec
207        my @query_spec = @{ SDL::Mixer::query_spec() };
208
209       Find out what the actual audio device parameters are.  This function
210       returns 1 as first array element (status) if the audio has been opened,
211       0 otherwise.
212
213       Example:
214
215        use SDL::Mixer;
216
217        my ($status, $freq, $format, $channels) = @{ SDL::Mixer::query_spec() };
218
219        printf("%s, %s, %s, %s\n", $status, $freq, $format, $channels);
220

AUTHORS

226       See "AUTHORS" in SDL.
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230perl v5.30.1                      2020-01-30                     SDL::Mixer(3)

NAME

CATEGORY

CONSTANTS

DESCRIPTION

METHODS

SEE ALSO

AUTHORS