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103 lines
2.9 KiB
103 lines
2.9 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef VOICE_SOUND_ENGINE_INTERFACE_H
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#define VOICE_SOUND_ENGINE_INTERFACE_H
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#pragma once
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/*! @defgroup VoiceSoundEngineInterface VoiceSoundEngineInterface
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Abstracts out the sound engine for the voice code.
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GoldSrc and Src each have a different implementation of this.
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@{
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*/
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//! Max number of receiving voice channels.
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#define VOICE_NUM_CHANNELS 5
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// ----------------------------------------------------------------------------- //
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// Functions for voice.cpp.
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// ----------------------------------------------------------------------------- //
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//! Initialize the sound engine interface.
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bool VoiceSE_Init();
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//! Shutdown the sound engine interface.
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void VoiceSE_Term();
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//! Called each frame.
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void VoiceSE_Idle(float frametime);
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//! Start audio playback on the specified voice channel.
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//! Voice_GetChannelAudio is called by the mixer for each active channel.
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int VoiceSE_StartChannel(
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//! Which channel to start.
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int iChannel,
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int iEntity,
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bool bProximity,
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int nViewEntityIndex
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);
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//! Stop audio playback on the specified voice channel.
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void VoiceSE_EndChannel(
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//! Which channel to stop.
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int iChannel,
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int iEntity
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);
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//! Starts the voice overdrive (lowers volume of all sounds other than voice).
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void VoiceSE_StartOverdrive();
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void VoiceSE_EndOverdrive();
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//! Control mouth movement for an entity.
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void VoiceSE_InitMouth(int entnum);
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void VoiceSE_CloseMouth(int entnum);
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void VoiceSE_MoveMouth(int entnum, short *pSamples, int nSamples);
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// ----------------------------------------------------------------------------- //
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// Functions for voice.cpp to implement.
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// ----------------------------------------------------------------------------- //
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//! This function is implemented in voice.cpp. Gives 16-bit signed mono samples to the mixer.
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//! \return Number of samples actually gotten.
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int Voice_GetOutputData(
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//! The voice channel it wants samples from.
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const int iChannel,
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//! The buffer to copy the samples into.
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char *copyBuf,
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//! Maximum size of copyBuf.
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const int copyBufSize,
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//! Which sample to start at.
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const int samplePosition,
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//! How many samples to get.
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const int sampleCount
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);
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// This is called when an audio source is deleted by the sound engine. The voice could
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// should detach whatever it needs to in order to free up the specified channel.
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void Voice_OnAudioSourceShutdown( int iChannel );
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// ----------------------------------------------------------------------------- //
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// Functions for the sound engine.
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// ----------------------------------------------------------------------------- //
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class CAudioSource;
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CAudioSource* Voice_SetupAudioSource( int soundsource, int entchannel );
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/*! @} End VoiceSoundEngineInterface group */
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#endif // VOICE_SOUND_ENGINE_INTERFACE_H
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