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root |
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=head1 NAME |
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DC::Audio - audio support for deliantra client |
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=head1 SYNOPSIS |
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use DC::Audio; |
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=head1 DESCRIPTION |
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=over 4 |
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=cut |
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package DC::Audio; |
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use common::sense; |
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use DC (); |
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our $SDL_MIXER; |
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sub init { |
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unless ($::SDL_MIXER) { |
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if (length $::CFG->{audio_driver}) { |
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local $ENV{SDL_AUDIODRIVER} = $::CFG->{audio_driver}; |
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DC::SDL_InitSubSystem DC::SDL_INIT_AUDIO |
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and die "SDL::Init failed!\n"; |
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} else { |
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DC::SDL_InitSubSystem DC::SDL_INIT_AUDIO |
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and die "SDL::Init failed!\n"; |
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} |
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$ENV{MIX_EFFECTSMAXSPEED} = 1; |
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$::SDL_MIXER = !DC::Mix_OpenAudio |
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$::CFG->{audio_hw_frequency}, |
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DC::MIX_DEFAULT_FORMAT, |
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$::CFG->{audio_hw_channels}, |
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$::CFG->{audio_hw_chunksize}; |
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DC::Mix_AllocateChannels $::CFG->{audio_mix_channels} |
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if $::SDL_MIXER; |
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} |
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} |
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sub _probe { |
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my $pid = fork; |
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return 1 unless defined $pid; |
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unless ($pid) { |
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eval { |
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DC::SDL_Init DC::SDL_INIT_NOPARACHUTE; |
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init; |
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}; |
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DC::_exit $@ ? 1 : 0; |
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} |
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waitpid $pid, 0 |
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and !$? |
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} |
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sub probe { |
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return unless $^O eq "linux"; |
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# on linux, both alsa and pulse (especially the latter) |
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# are prone to segfaults, while the other interfaces are |
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# simply unreliable. |
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# let's check whether the default config and a few others segfault, |
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# then decide |
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# user selected config |
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return if _probe; |
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# default sdl config |
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delete $ENV{SDL_AUDIODRIVER}; |
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$::CFG->{audio_driver} = ""; |
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return if _probe; |
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$::CFG->{audio_driver} = "pulse"; |
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return if _probe; |
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$::CFG->{audio_driver} = "alsa"; |
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return if _probe; |
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$::CFG->{audio_driver} = "dsp"; |
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return if _probe; |
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$::CFG->{audio_driver} = "none"; |
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} |
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root |
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1; |
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=back |
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=head1 AUTHOR |
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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=cut |
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