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https://github.com/signalwire/freeswitch.git
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a0e19e1c7f
This removes our in-tree version of portaudio-19 and migrates mod_portaudio and mod_portaudio_stream to use the system version of the library. Our detection of the system library relies on pkg-config.
133 lines
4.6 KiB
C
133 lines
4.6 KiB
C
#ifndef PORTAUDIO_PABLIO_H
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#define PORTAUDIO_PABLIO_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/*
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* $Id: pablio.h 1083 2006-08-23 07:30:49Z rossb $
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* PABLIO.h
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* Portable Audio Blocking read/write utility.
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*
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* Author: Phil Burk, http://www.softsynth.com/portaudio/
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*
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* Include file for PABLIO, the Portable Audio Blocking I/O Library.
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* PABLIO is built on top of PortAudio, the Portable Audio Library.
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* For more information see: http://www.portaudio.com
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* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <string.h>
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#include <portaudio.h>
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#include "pa_ringbuffer.h"
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/*! Maximum number of channels per stream */
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#define MAX_IO_CHANNELS 2
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/*! Maximum numer of milliseconds per packet */
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#define MAX_IO_MS 100
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/*! Maximum sampling rate (48Khz) */
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#define MAX_SAMPLING_RATE 48000
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/* Maximum size of a read */
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#define MAX_IO_BUFFER (((MAX_IO_MS * MAX_SAMPLING_RATE)/1000)*sizeof(int16_t))
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typedef struct {
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PaStream *istream;
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PaStream *ostream;
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PaStream *iostream;
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int bytesPerFrame;
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int do_dual;
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int has_in;
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int has_out;
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PaUtilRingBuffer inFIFOs[MAX_IO_CHANNELS];
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PaUtilRingBuffer outFIFOs[MAX_IO_CHANNELS];
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int channelCount;
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char iobuff[MAX_IO_BUFFER];
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} PABLIO_Stream;
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/* Values for flags for OpenAudioStream(). */
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#define PABLIO_READ (1<<0)
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#define PABLIO_WRITE (1<<1)
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#define PABLIO_READ_WRITE (PABLIO_READ|PABLIO_WRITE)
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#define PABLIO_MONO (1<<2)
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#define PABLIO_STEREO (1<<3)
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/************************************************************
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* Write data to ring buffer.
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* Will not return until all the data has been written.
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*/
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long WriteAudioStream(PABLIO_Stream * aStream, void *data, long numFrames, int chan, switch_timer_t *timer);
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/************************************************************
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* Read data from ring buffer.
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* Will not return until all the data has been read.
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*/
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long ReadAudioStream(PABLIO_Stream * aStream, void *data, long numFrames, int chan, switch_timer_t *timer);
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/************************************************************
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* Return the number of frames that could be written to the stream without
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* having to wait.
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*/
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long GetAudioStreamWriteable(PABLIO_Stream * aStream, int chan);
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/************************************************************
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* Return the number of frames that are available to be read from the
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* stream without having to wait.
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*/
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long GetAudioStreamReadable(PABLIO_Stream * aStream, int chan);
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/************************************************************
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* Opens a PortAudio stream with default characteristics.
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* Allocates PABLIO_Stream structure.
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*
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* flags parameter can be an ORed combination of:
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* PABLIO_READ, PABLIO_WRITE, or PABLIO_READ_WRITE,
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* and either PABLIO_MONO or PABLIO_STEREO
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*/
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PaError OpenAudioStream(PABLIO_Stream ** rwblPtr,
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const PaStreamParameters * inputParameters,
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const PaStreamParameters * outputParameters,
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double sampleRate, PaStreamCallbackFlags statusFlags, long samples_per_packet, int do_dual);
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PaError CloseAudioStream(PABLIO_Stream * aStream);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _PABLIO_H */
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