diff options
author | Sergeanur <s.anureev@yandex.ua> | 2020-05-11 20:07:12 +0200 |
---|---|---|
committer | Sergeanur <s.anureev@yandex.ua> | 2020-05-11 20:07:12 +0200 |
commit | 0aa7f13c32ea1991f4663f5eff1c37478fdf736f (patch) | |
tree | a994ac3a72f9b65dfe6648d3086d4415fe2b1234 /src/audio/oal/channel.cpp | |
parent | little fix for cam (diff) | |
parent | remove aps from premake (diff) | |
download | re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.tar re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.tar.gz re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.tar.bz2 re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.tar.lz re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.tar.xz re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.tar.zst re3-0aa7f13c32ea1991f4663f5eff1c37478fdf736f.zip |
Diffstat (limited to 'src/audio/oal/channel.cpp')
-rw-r--r-- | src/audio/oal/channel.cpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/audio/oal/channel.cpp b/src/audio/oal/channel.cpp new file mode 100644 index 00000000..7742a06a --- /dev/null +++ b/src/audio/oal/channel.cpp @@ -0,0 +1,210 @@ +#include "channel.h" + +#ifdef AUDIO_OAL +#include "common.h" +#include "sampman.h" + +extern bool IsFXSupported(); + +CChannel::CChannel() +{ + alSource = AL_NONE; + alFilter = AL_FILTER_NULL; + SetDefault(); +} + +void CChannel::SetDefault() +{ + alBuffer = AL_NONE; + + Pitch = 1.0f; + Gain = 1.0f; + Mix = 0.0f; + + Position[0] = 0.0f; Position[1] = 0.0f; Position[2] = 0.0f; + Distances[0] = 0.0f; Distances[1] = FLT_MAX; + LoopCount = 1; + LoopPoints[0] = 0; LoopPoints[1] = -1; + + Frequency = MAX_FREQ; +} + +void CChannel::Reset() +{ + ClearBuffer(); + SetDefault(); +} + +void CChannel::Init(bool Is2D) +{ + ASSERT(!HasSource()); + alGenSources(1, &alSource); + if ( HasSource() ) + { + alSourcei(alSource, AL_SOURCE_RELATIVE, AL_TRUE); + if ( IsFXSupported() ) + alSource3i(alSource, AL_AUXILIARY_SEND_FILTER, AL_EFFECTSLOT_NULL, 0, AL_FILTER_NULL); + + if ( Is2D ) + { + alSource3f(alSource, AL_POSITION, 0.0f, 0.0f, 0.0f); + alSourcef (alSource, AL_GAIN, 1.0f); + } + else + { + if ( IsFXSupported() ) + alGenFilters(1,&alFilter); + } + } +} + +void CChannel::Term() +{ + Stop(); + if ( HasSource() ) + { + if ( IsFXSupported() ) + { + alSource3i(alSource, AL_AUXILIARY_SEND_FILTER, AL_EFFECTSLOT_NULL, 0, AL_FILTER_NULL); + + if(alFilter != AL_FILTER_NULL) + alDeleteFilters(1,&alFilter); + } + + alDeleteSources(1, &alSource); + } + alSource = AL_NONE; + alFilter = AL_FILTER_NULL; +} + +void CChannel::Start() +{ + if ( !HasSource() ) return; + + if ( LoopPoints[0] != 0 && LoopPoints[0] != -1 ) + alBufferiv(alBuffer, AL_LOOP_POINTS_SOFT, LoopPoints); + alSourcei (alSource, AL_BUFFER, alBuffer); + alSourcePlay(alSource); +} + +void CChannel::Stop() +{ + if ( HasSource() ) + alSourceStop(alSource); + + Reset(); +} + +bool CChannel::HasSource() +{ + return alSource != AL_NONE; +} + +bool CChannel::IsUsed() +{ + if ( HasSource() ) + { + ALint sourceState; + alGetSourcei(alSource, AL_SOURCE_STATE, &sourceState); + return sourceState == AL_PLAYING; + } + return false; +} + +void CChannel::SetPitch(float pitch) +{ + if ( !HasSource() ) return; + alSourcef(alSource, AL_PITCH, pitch); +} + +void CChannel::SetGain(float gain) +{ + if ( !HasSource() ) return; + alSourcef(alSource, AL_GAIN, gain); +} + +void CChannel::SetVolume(int32 vol) +{ + SetGain(ALfloat(vol) / MAX_VOLUME); +} + +void CChannel::SetSampleID(uint32 nSfx) +{ + Sample = nSfx; +} + +void CChannel::SetFreq(int32 freq) +{ + Frequency = freq; +} + +void CChannel::SetCurrentFreq(uint32 freq) +{ + SetPitch(ALfloat(freq) / Frequency); +} + +void CChannel::SetLoopCount(int32 loopCount) // fake. TODO: +{ + if ( !HasSource() ) return; + alSourcei(alSource, AL_LOOPING, loopCount == 1 ? AL_FALSE : AL_TRUE); +} + +void CChannel::SetLoopPoints(ALint start, ALint end) +{ + LoopPoints[0] = start; + LoopPoints[1] = end; +} + +void CChannel::SetPosition(float x, float y, float z) +{ + if ( !HasSource() ) return; + alSource3f(alSource, AL_POSITION, x, y, z); +} + +void CChannel::SetDistances(float max, float min) +{ + if ( !HasSource() ) return; + alSourcef (alSource, AL_MAX_DISTANCE, max); + alSourcef (alSource, AL_REFERENCE_DISTANCE, min); + alSourcef (alSource, AL_MAX_GAIN, 1.0f); + alSourcef (alSource, AL_ROLLOFF_FACTOR, 1.0f); +} + +void CChannel::SetPan(uint32 pan) +{ + SetPosition((pan-63)/64.0f, 0.0f, Sqrt(1.0f-SQR((pan-63)/64.0f))); +} + +void CChannel::SetBuffer(ALuint buffer) +{ + alBuffer = buffer; +} + +void CChannel::ClearBuffer() +{ + if ( !HasSource() ) return; + SetBuffer(AL_NONE); + alSourcei(alSource, AL_BUFFER, AL_NONE); +} + +void CChannel::SetReverbMix(ALuint slot, float mix) +{ + if ( !IsFXSupported() ) return; + if ( !HasSource() ) return; + if ( alFilter == AL_FILTER_NULL ) return; + + Mix = mix; + EAX3_SetReverbMix(alFilter, mix); + alSource3i(alSource, AL_AUXILIARY_SEND_FILTER, slot, 0, alFilter); +} + +void CChannel::UpdateReverb(ALuint slot) +{ + if ( !IsFXSupported() ) return; + if ( !HasSource() ) return; + if ( alFilter == AL_FILTER_NULL ) return; + EAX3_SetReverbMix(alFilter, Mix); + alSource3i(alSource, AL_AUXILIARY_SEND_FILTER, slot, 0, alFilter); +} + +#endif
\ No newline at end of file |