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/*
* $Id: PlaybackNode.h,v 1.1.1.1 2002/01/22 00:52:08 phil Exp $
* PortAudio Portable Real-Time Audio Library
* Latest Version at: http://www.portaudio.com
* BeOS Media Kit Implementation by Joshua Haberman
*
* Copyright (c) 2001 Joshua Haberman <joshua@haberman.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
* they can be incorporated into the canonical version.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <be/media/MediaRoster.h>
#include <be/media/MediaEventLooper.h>
#include <be/media/BufferProducer.h>
#include "portaudio.h"
class PaPlaybackNode :
public BBufferProducer,
public BMediaEventLooper
{
public:
PaPlaybackNode( uint32 channels, float frame_rate, uint32 frames_per_buffer,
PortAudioCallback *callback, void *user_data );
~PaPlaybackNode();
/* Local methods ******************************************/
BBuffer *FillNextBuffer(bigtime_t time);
void SetSampleFormat(PaSampleFormat inFormat, PaSampleFormat outFormat);
bool IsRunning();
PaTimestamp GetStreamTime();
/* BMediaNode methods *************************************/
BMediaAddOn* AddOn( int32 * ) const;
status_t HandleMessage( int32 message, const void *data, size_t size );
/* BMediaEventLooper methods ******************************/
void HandleEvent( const media_timed_event *event, bigtime_t lateness,
bool realTimeEvent );
void NodeRegistered();
/* BBufferProducer methods ********************************/
status_t FormatSuggestionRequested( media_type type, int32 quality,
media_format* format );
status_t FormatProposal( const media_source& output, media_format* format );
status_t FormatChangeRequested( const media_source& source,
const media_destination& destination, media_format* io_format, int32* );
status_t GetNextOutput( int32* cookie, media_output* out_output );
status_t DisposeOutputCookie( int32 cookie );
void LateNoticeReceived( const media_source& what, bigtime_t how_much,
bigtime_t performance_time );
void EnableOutput( const media_source& what, bool enabled, int32* _deprecated_ );
status_t PrepareToConnect( const media_source& what,
const media_destination& where, media_format* format,
media_source* out_source, char* out_name );
void Connect(status_t error, const media_source& source,
const media_destination& destination, const media_format& format,
char* io_name);
void Disconnect(const media_source& what, const media_destination& where);
status_t SetBufferGroup(const media_source& for_source, BBufferGroup* newGroup);
bool mAborted;
private:
media_output mOutput;
media_format mPreferredFormat;
uint32 mOutputSampleWidth, mFramesPerBuffer;
BBufferGroup *mBufferGroup;
bigtime_t mDownstreamLatency, mInternalLatency, mStartTime;
uint64 mSamplesSent;
PortAudioCallback *mCallback;
void *mUserData;
bool mRunning;
};
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