audiostream.h 2.78 KB
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/*
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 *  Copyright (C) 2004-2012 Savoir-Faire Linux Inc.
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 *  Author: Emmanuel Milou <emmanuel.milou@savoirfairelinux.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  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 License
 *  along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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 *
 *  Additional permission under GNU GPL version 3 section 7:
 *
 *  If you modify this program, or any covered work, by linking or
 *  combining it with the OpenSSL project's OpenSSL library (or a
 *  modified version of that library), containing parts covered by the
 *  terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
 *  grants you additional permission to convey the resulting work.
 *  Corresponding Source for a non-source form of such a combination
 *  shall include the source code for the parts of OpenSSL used as well
 *  as that of the covered work.
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 */

#ifndef _AUDIO_STREAM_H
#define _AUDIO_STREAM_H

#include <pulse/pulseaudio.h>
#include <string>
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#include "noncopyable.h"
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/**
 * This data structure contains the different king of audio streams available
 */
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enum STREAM_TYPE {
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    PLAYBACK_STREAM, CAPTURE_STREAM, RINGTONE_STREAM
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};
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class AudioStream {
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    public:
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        /**
         * Constructor
         *
         * @param context pulseaudio's application context.
         * @param mainloop pulseaudio's main loop
         * @param description
         * @param types
         * @param audio sampling rate
         * @param device name
         */
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        AudioStream(pa_context *, pa_threaded_mainloop *, const char *, int, unsigned, const std::string&);
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        ~AudioStream();
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        /**
         * Accessor: Get the pulseaudio stream object
         * @return pa_stream* The stream
         */
        pa_stream* pulseStream() {
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            return audiostream_;
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        }
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        bool isReady();
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    private:
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        NON_COPYABLE(AudioStream);
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        /**
         * Mandatory asynchronous callback on the audio stream state
         */
        static void stream_state_callback(pa_stream* s, void* user_data);
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        /**
         * The pulse audio object
         */
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        pa_stream* audiostream_;
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        /**
         * A pointer to the opaque threaded main loop object
         */
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        pa_threaded_mainloop * mainloop_;
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};

#endif // _AUDIO_STREAM_H