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"

#if defined(__APPLE__)
# include <stdlib.h>
#else
# include <malloc.h>
#endif


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;
        #if defined(__APPLE__)
        this->pBuffer            = (float *) malloc(BufferSize*sizeof(float));
        #else
        this->pBuffer            = (float *) memalign(16,BufferSize*sizeof(float));
        #endif
        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
25	#if defined(__APPLE__)
26	# include <stdlib.h>
27	#else
28	# include <malloc.h>
29	#endif
30
31
32	namespace LinuxSampler {
33
34	/**
35	* Create real channel.
36	*
37	* @param ChannelNr - channel number of this new channel
38	* @param BufferSize - desired audio data buffer size
39	*/
40	AudioChannel::AudioChannel(uint ChannelNr, uint BufferSize) {
41	this->ChannelNr = ChannelNr;
42	#if defined(__APPLE__)
43	this->pBuffer = (float ) malloc(BufferSizesizeof(float));
44	#else
45	this->pBuffer = (float ) memalign(16,BufferSizesizeof(float));
46	#endif
47	this->uiBufferSize = BufferSize;
48	this->pMixChannel = NULL;
49	this->UsesExternalBuffer = false;
50
51	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
52	Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);
53
54	Clear();
55	}
56
57	/**
58	* Create channel with external (already existing) audio buffer.
59	*
60	* @param ChannelNr - channel number of this new channel
61	* @param pBuffer - external audio buffer
62	* @param BufferSIze - size of the external buffer
63	*/
64	AudioChannel::AudioChannel(uint ChannelNr, float* pBuffer, uint BufferSize) {
65	this->ChannelNr = ChannelNr;
66	this->pBuffer = pBuffer;
67	this->uiBufferSize = BufferSize;
68	this->pMixChannel = NULL;
69	this->UsesExternalBuffer = true;
70
71	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
72	Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(false);
73
74	Clear();
75	}
76
77	/**
78	* Create mix channel.
79	*
80	* @param ChannelNr - channel number of this new channel
81	* @param pMixChannelDestination - a real audio channel this new mix
82	* channel refers to
83	*/
84	AudioChannel::AudioChannel(uint ChannelNr, AudioChannel* pMixChannelDestination) {
85	this->ChannelNr = ChannelNr;
86	this->pBuffer = pMixChannelDestination->Buffer();
87	this->uiBufferSize = pMixChannelDestination->uiBufferSize;
88	this->pMixChannel = pMixChannelDestination;
89	this->UsesExternalBuffer = true;
90
91	Parameters["NAME"] = new ParameterName("Channel " + ToString(ChannelNr));
92	Parameters["IS_MIX_CHANNEL"] = new ParameterIsMixChannel(true);
93	//TODO: Parameters["MIX_CHANNEL_DESTINATION"] = new ParameterMixChannelDestination(dest_chan);
94
95	Clear();
96	}
97
98	/**
99	* Destructor
100	*/
101	AudioChannel::~AudioChannel() {
102	std::map<String,DeviceRuntimeParameter*>::iterator iter = Parameters.begin();
103	while (iter != Parameters.end()) { delete iter->second; iter++; }
104	if (!UsesExternalBuffer) free(pBuffer);
105	}
106
107	std::map<String,DeviceRuntimeParameter*> AudioChannel::ChannelParameters() {
108	return Parameters;
109	}
110	}