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https://github.com/saitohirga/WSJT-X.git
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8d353a5b3b
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/trunk@189 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
/*
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* $Id$
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* PortAudio Portable Real-Time Audio Library
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* Latest Version at: http://www.portaudio.com
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* BeOS Media Kit Implementation by Joshua Haberman
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*
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* Copyright (c) 2001 Joshua Haberman <joshua@haberman.com>
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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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* 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.
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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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#include <be/media/MediaRoster.h>
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#include <be/media/MediaEventLooper.h>
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#include <be/media/BufferProducer.h>
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#include "portaudio.h"
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class PaPlaybackNode :
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public BBufferProducer,
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public BMediaEventLooper
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{
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public:
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PaPlaybackNode( uint32 channels, float frame_rate, uint32 frames_per_buffer,
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PortAudioCallback *callback, void *user_data );
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~PaPlaybackNode();
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/* Local methods ******************************************/
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BBuffer *FillNextBuffer(bigtime_t time);
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void SetSampleFormat(PaSampleFormat inFormat, PaSampleFormat outFormat);
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bool IsRunning();
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PaTimestamp GetStreamTime();
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/* BMediaNode methods *************************************/
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BMediaAddOn* AddOn( int32 * ) const;
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status_t HandleMessage( int32 message, const void *data, size_t size );
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/* BMediaEventLooper methods ******************************/
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void HandleEvent( const media_timed_event *event, bigtime_t lateness,
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bool realTimeEvent );
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void NodeRegistered();
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/* BBufferProducer methods ********************************/
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status_t FormatSuggestionRequested( media_type type, int32 quality,
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media_format* format );
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status_t FormatProposal( const media_source& output, media_format* format );
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status_t FormatChangeRequested( const media_source& source,
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const media_destination& destination, media_format* io_format, int32* );
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status_t GetNextOutput( int32* cookie, media_output* out_output );
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status_t DisposeOutputCookie( int32 cookie );
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void LateNoticeReceived( const media_source& what, bigtime_t how_much,
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bigtime_t performance_time );
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void EnableOutput( const media_source& what, bool enabled, int32* _deprecated_ );
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status_t PrepareToConnect( const media_source& what,
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const media_destination& where, media_format* format,
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media_source* out_source, char* out_name );
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void Connect(status_t error, const media_source& source,
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const media_destination& destination, const media_format& format,
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char* io_name);
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void Disconnect(const media_source& what, const media_destination& where);
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status_t SetBufferGroup(const media_source& for_source, BBufferGroup* newGroup);
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bool mAborted;
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private:
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media_output mOutput;
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media_format mPreferredFormat;
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uint32 mOutputSampleWidth, mFramesPerBuffer;
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BBufferGroup *mBufferGroup;
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bigtime_t mDownstreamLatency, mInternalLatency, mStartTime;
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uint64 mSamplesSent;
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PortAudioCallback *mCallback;
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void *mUserData;
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bool mRunning;
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};
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