71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/* FluidSynth - A Software Synthesizer
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*
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* Copyright (C) 2003 Peter Hanappe and others.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License
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* as published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307, USA
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*/
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#ifndef _FLUIDSYNTH_AUDIO_H
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#define _FLUIDSYNTH_AUDIO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @file audio.h
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* @brief Functions for audio driver output.
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*
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* Defines functions for creating audio driver output. Use
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* new_fluid_audio_driver() to create a new audio driver for a given synth
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* and configuration settings. The function new_fluid_audio_driver2() can be
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* used if custom audio processing is desired before the audio is sent to the
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* audio driver (although it is not as efficient).
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*/
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/**
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* Callback function type used with new_fluid_audio_driver2() to allow for
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* custom user audio processing before the audio is sent to the driver. This
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* function is responsible for rendering the audio to the buffers.
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* @param data The user data parameter as passed to new_fluid_audio_driver2().
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* @param len Length of the audio in frames.
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* @param nin Count of buffers in 'in'
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* @param in FIXME - Not used currently?
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* @param nout Count of arrays in 'out' (i.e., channel count)
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* @param out Output buffers, one for each channel
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* @return Should return 0 on success, non-zero if an error occured.
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*/
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typedef int (*fluid_audio_func_t)(void* data, int len,
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int nin, float** in,
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int nout, float** out);
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FLUIDSYNTH_API fluid_audio_driver_t* new_fluid_audio_driver(fluid_settings_t* settings,
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fluid_synth_t* synth);
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FLUIDSYNTH_API fluid_audio_driver_t* new_fluid_audio_driver2(fluid_settings_t* settings,
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fluid_audio_func_t func,
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void* data);
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FLUIDSYNTH_API void delete_fluid_audio_driver(fluid_audio_driver_t* driver);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _FLUIDSYNTH_AUDIO_H */
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