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            = pMixChannelDestination->Buffer();
        this->uiBufferSize       = pMixChannelDestination->uiBufferSize;
        this->pMixChannel        = pMixChannelDestination;
        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	/***************************************************************************
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	#include <malloc.h>
25
26	namespace LinuxSampler {
27
28	/**
29	* Create real channel.
30	*
31	* @param ChannelNr - channel number of this new channel
32	* @param BufferSize - desired audio data buffer size
33	*/
34	AudioChannel::AudioChannel(uint ChannelNr, uint BufferSize) {
35	this->ChannelNr = ChannelNr;
36	this->pBuffer = (float ) memalign(16,BufferSizesizeof(float));
37	this->uiBufferSize = BufferSize;
38	this->pMixChannel = NULL;
39	this->UsesExternalBuffer = false;
40
41	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
42	Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);
43
44	Clear();
45	}
46
47	/**
48	* Create channel with external (already existing) audio buffer.
49	*
50	* @param ChannelNr - channel number of this new channel
51	* @param pBuffer - external audio buffer
52	* @param BufferSIze - size of the external buffer
53	*/
54	AudioChannel::AudioChannel(uint ChannelNr, float* pBuffer, uint BufferSize) {
55	this->ChannelNr = ChannelNr;
56	this->pBuffer = pBuffer;
57	this->uiBufferSize = BufferSize;
58	this->pMixChannel = NULL;
59	this->UsesExternalBuffer = true;
60
61	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
62	Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);
63
64	Clear();
65	}
66
67	/**
68	* Create mix channel.
69	*
70	* @param ChannelNr - channel number of this new channel
71	* @param pMixChannelDestination - a real audio channel this new mix
72	* channel refers to
73	*/
74	AudioChannel::AudioChannel(uint ChannelNr, AudioChannel* pMixChannelDestination) {
75	this->ChannelNr = ChannelNr;
76	this->pBuffer = pMixChannelDestination->Buffer();
77	this->uiBufferSize = pMixChannelDestination->uiBufferSize;
78	this->pMixChannel = pMixChannelDestination;
79	this->UsesExternalBuffer = true;
80
81	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
85	Clear();
86	}
87
88	/**
89	* Destructor
90	*/
91	AudioChannel::~AudioChannel() {
92	std::map<String,DeviceRuntimeParameter*>::iterator iter = Parameters.begin();
93	while (iter != Parameters.end()) { delete iter->second; iter++; }
94	if (!UsesExternalBuffer) free(pBuffer);
95	}
96
97	std::map<String,DeviceRuntimeParameter*> AudioChannel::ChannelParameters() {
98	return Parameters;
99	}
100	}