drivers/audio/AudioChannel.cpp

/***************************************************************************
 *                                                                         *
 *   LinuxSampler - modular, streaming capable sampler                     *
 *                                                                         *
 *   Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck   *
 *                                                                         *
 *   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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   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.                          *
 *                                                                         *
 *   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., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 ***************************************************************************/

#include "AudioChannel.h"
#include <malloc.h>

namespace LinuxSampler {

    /**
     * Create real channel.
     *
     * @param ChannelNr  - channel number of this new channel
     * @param BufferSize - desired audio data buffer size
     */
    AudioChannel::AudioChannel(uint ChannelNr, uint BufferSize) {
        this->ChannelNr          = ChannelNr;
        this->pBuffer            = (float *) memalign(16,BufferSize*sizeof(float));
        this->uiBufferSize       = BufferSize;
        this->pMixChannel        = NULL;
        this->UsesExternalBuffer = false;

        Parameters["NAME"]           = new ParameterName("Channel " + ToString(ChannelNr));
        Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);

        Clear();
    }

    /**
     * Create channel with external (already existing) audio buffer.
     *
     * @param ChannelNr  - channel number of this new channel
     * @param pBuffer    - external audio buffer
     * @param BufferSIze - size of the external buffer
     */
    AudioChannel::AudioChannel(uint ChannelNr, float* pBuffer, uint BufferSize) {
        this->ChannelNr          = ChannelNr;
        this->pBuffer            = pBuffer;
        this->uiBufferSize       = BufferSize;
        this->pMixChannel        = NULL;
        this->UsesExternalBuffer = true;

        Parameters["NAME"]           = new ParameterName("Channel " + ToString(ChannelNr));
        Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);

        Clear();
    }

    /**
     * Create mix channel.
     *
     * @param ChannelNr              - channel number of this new channel
     * @param pMixChannelDestination - a real audio channel this new mix
     *                                 channel refers to
     */
    AudioChannel::AudioChannel(uint ChannelNr, AudioChannel* pMixChannelDestination) {
        this->ChannelNr          = ChannelNr;
        this->pBuffer            = pMixChannel->Buffer();
        this->uiBufferSize       = pMixChannel->uiBufferSize;
        this->pMixChannel        = pMixChannel;
        this->UsesExternalBuffer = true;

        Parameters["NAME"]           = new ParameterName("Channel " + ToString(ChannelNr));
        Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(true);
        //TODO: Parameters["MIX_CHANNEL_DESTINATION"] = new ParameterMixChannelDestination(dest_chan);

        Clear();
    }

    /**
     * Destructor
     */
    AudioChannel::~AudioChannel() {
        std::map<String,DeviceRuntimeParameter*>::iterator iter = Parameters.begin();
        while (iter != Parameters.end()) { delete iter->second; iter++; }
        if (!UsesExternalBuffer) free(pBuffer);
    }

    std::map<String,DeviceRuntimeParameter*> AudioChannel::ChannelParameters() {
        return Parameters;
    }
}
1	schoenebeck	200	/***************************************************************************
2			* *
3			* LinuxSampler - modular, streaming capable sampler *
4			* *
5			* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6			* *
7			* This program is free software; you can redistribute it and/or modify *
8			* it under the terms of the GNU General Public License as published by *
9			* the Free Software Foundation; either version 2 of the License, or *
10			* (at your option) any later version. *
11			* *
12			* This program is distributed in the hope that it will be useful, *
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of *
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15			* GNU General Public License for more details. *
16			* *
17			* You should have received a copy of the GNU General Public License *
18			* along with this program; if not, write to the Free Software *
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20			* MA 02111-1307 USA *
21			***************************************************************************/
22
23			#include "AudioChannel.h"
24	schoenebeck	319	#include <malloc.h>
25	schoenebeck	200
26			namespace LinuxSampler {
27
28			/**
29			* Create real channel.
30			*
31	schoenebeck	226	* @param ChannelNr - channel number of this new channel
32	schoenebeck	200	* @param BufferSize - desired audio data buffer size
33			*/
34	schoenebeck	226	AudioChannel::AudioChannel(uint ChannelNr, uint BufferSize) {
35			this->ChannelNr = ChannelNr;
36	schoenebeck	319	this->pBuffer = (float ) memalign(16,BufferSizesizeof(float));
37	schoenebeck	200	this->uiBufferSize = BufferSize;
38			this->pMixChannel = NULL;
39			this->UsesExternalBuffer = false;
40
41	schoenebeck	226	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
42			Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);
43	schoenebeck	200
44			Clear();
45			}
46
47			/**
48			* Create channel with external (already existing) audio buffer.
49			*
50	schoenebeck	226	* @param ChannelNr - channel number of this new channel
51	schoenebeck	200	* @param pBuffer - external audio buffer
52			* @param BufferSIze - size of the external buffer
53			*/
54	schoenebeck	226	AudioChannel::AudioChannel(uint ChannelNr, float* pBuffer, uint BufferSize) {
55			this->ChannelNr = ChannelNr;
56	schoenebeck	200	this->pBuffer = pBuffer;
57			this->uiBufferSize = BufferSize;
58			this->pMixChannel = NULL;
59			this->UsesExternalBuffer = true;
60
61	schoenebeck	226	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
62			Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);
63	schoenebeck	200
64			Clear();
65			}
66
67			/**
68			* Create mix channel.
69			*
70	schoenebeck	226	* @param ChannelNr - channel number of this new channel
71			* @param pMixChannelDestination - a real audio channel this new mix
72			* channel refers to
73	schoenebeck	200	*/
74	schoenebeck	226	AudioChannel::AudioChannel(uint ChannelNr, AudioChannel* pMixChannelDestination) {
75			this->ChannelNr = ChannelNr;
76	schoenebeck	200	this->pBuffer = pMixChannel->Buffer();
77			this->uiBufferSize = pMixChannel->uiBufferSize;
78			this->pMixChannel = pMixChannel;
79			this->UsesExternalBuffer = true;
80
81	schoenebeck	226	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
82			Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(true);
83			//TODO: Parameters["MIX_CHANNEL_DESTINATION"] = new ParameterMixChannelDestination(dest_chan);
84	schoenebeck	200
85			Clear();
86			}
87
88			/**
89			* Destructor
90			*/
91			AudioChannel::~AudioChannel() {
92	schoenebeck	226	std::map<String,DeviceRuntimeParameter*>::iterator iter = Parameters.begin();
93			while (iter != Parameters.end()) { delete iter->second; iter++; }
94	schoenebeck	319	if (!UsesExternalBuffer) free(pBuffer);
95	schoenebeck	200	}
96
97			std::map<String,DeviceRuntimeParameter*> AudioChannel::ChannelParameters() {
98	schoenebeck	226	return Parameters;
99	schoenebeck	200	}
100			}