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7f1d18ae62
* Renamed audio driver components in caed(8). Signed-off-by: Fred Gleason <fredg@paravelsystems.com>
129 lines
4.5 KiB
C++
129 lines
4.5 KiB
C++
// driver_alsa.h
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//
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// caed(8) driver for Advanced Linux Audio Architecture devices
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//
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// (C) Copyright 2021 Fred Gleason <fredg@paravelsystems.com>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#ifndef DRIVER_ALSA_H
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#define DRIVER_ALSA_H
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#include <rdconfig.h>
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#include <rdwavefile.h>
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#include "driver.h"
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#ifdef ALSA
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#include <alsa/asoundlib.h>
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struct alsa_format {
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int card;
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pthread_t thread;
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snd_pcm_t *pcm;
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unsigned channels;
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unsigned capture_channels;
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snd_pcm_uframes_t buffer_size;
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snd_pcm_format_t format;
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unsigned sample_rate;
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char *card_buffer;
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char *passthrough_buffer;
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unsigned card_buffer_size;
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unsigned periods;
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bool exiting;
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};
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#endif // ALSA
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class DriverAlsa : public Driver
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{
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Q_OBJECT
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public:
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DriverAlsa(QObject *parent=0);
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~DriverAlsa();
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QString version() const;
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bool initialize(unsigned *next_cardnum);
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bool loadPlayback(int card,QString wavename,int *stream);
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bool unloadPlayback(int card,int stream);
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bool playbackPosition(int card,int stream,unsigned pos);
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bool play(int card,int stream,int length,int speed,bool pitch,
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bool rates);
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bool stopPlayback(int card,int stream);
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bool timescaleSupported(int card);
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bool loadRecord(int card,int port,int coding,int chans,int samprate,
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int bitrate,QString wavename);
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bool unloadRecord(int card,int port,unsigned *len);
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bool record(int card,int port,int length,int thres);
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bool stopRecord(int card,int port);
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bool setClockSource(int card,int src);
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bool setInputVolume(int card,int stream,int level);
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bool setOutputVolume(int card,int stream,int port,int level);
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bool fadeOutputVolume(int card,int stream,int port,int level,
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int length);
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bool setInputLevel(int card,int port,int level);
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bool setOutputLevel(int card,int port,int level);
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bool setInputMode(int card,int stream,int mode);
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bool setOutputMode(int card,int stream,int mode);
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bool setInputVoxLevel(int card,int stream,int level);
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bool setInputType(int card,int port,int type);
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bool getInputStatus(int card,int port);
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bool getInputMeters(int card,int port,short levels[2]);
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bool getOutputMeters(int card,int port,short levels[2]);
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bool getStreamOutputMeters(int card,int stream,short levels[2]);
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bool setPassthroughLevel(int card,int in_port,int out_port,
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int level);
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void getOutputPosition(int card,unsigned *pos);
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public slots:
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void processBuffers();
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private slots:
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void stopTimerData(int cardstream);
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void fadeTimerData(int cardstream);
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void recordTimerData(int cardport);
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private:
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#ifdef ALSA
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bool AlsaStartCaptureDevice(QString &dev,int card,snd_pcm_t *pcm);
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bool AlsaStartPlayDevice(QString &dev,int card,snd_pcm_t *pcm);
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void AlsaInitCallback();
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int GetAlsaOutputStream(int card);
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void FreeAlsaOutputStream(int card,int stream);
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void EmptyAlsaInputStream(int card,int stream);
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void WriteAlsaBuffer(int card,int stream,short *buffer,unsigned len);
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void FillAlsaOutputStream(int card,int stream);
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void AlsaClock();
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struct alsa_format alsa_play_format[RD_MAX_CARDS];
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struct alsa_format alsa_capture_format[RD_MAX_CARDS];
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short alsa_input_volume_db[RD_MAX_CARDS][RD_MAX_STREAMS];
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short alsa_output_volume_db[RD_MAX_CARDS][RD_MAX_PORTS][RD_MAX_STREAMS];
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short alsa_passthrough_volume_db[RD_MAX_CARDS][RD_MAX_PORTS][RD_MAX_PORTS];
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short *alsa_wave_buffer;
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uint8_t *alsa_wave24_buffer;
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RDWaveFile *alsa_record_wave[RD_MAX_CARDS][RD_MAX_STREAMS];
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RDWaveFile *alsa_play_wave[RD_MAX_CARDS][RD_MAX_STREAMS];
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int alsa_offset[RD_MAX_CARDS][RD_MAX_STREAMS];
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QTimer *alsa_fade_timer[RD_MAX_CARDS][RD_MAX_STREAMS];
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QTimer *alsa_stop_timer[RD_MAX_CARDS][RD_MAX_STREAMS];
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QTimer *alsa_record_timer[RD_MAX_CARDS][RD_MAX_PORTS];
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bool alsa_fade_up[RD_MAX_CARDS][RD_MAX_STREAMS];
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short alsa_fade_volume_db[RD_MAX_CARDS][RD_MAX_STREAMS];
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short alsa_fade_increment[RD_MAX_CARDS][RD_MAX_STREAMS];
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int alsa_fade_port[RD_MAX_CARDS][RD_MAX_STREAMS];
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unsigned alsa_samples_recorded[RD_MAX_CARDS][RD_MAX_STREAMS];
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#endif // ALSA
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};
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#endif // DRIVER_ALSA_H
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