root/trunk/libffado/src/libstreaming/motu/MotuReceiveStreamProcessor.h

Revision 742, 3.0 kB (checked in by ppalmers, 13 years ago)

- Remove some obsolete support files and dirs

- Clean up the license statements in the source files. Everything is

GPL version 3 now.

- Add license and copyright notices to scons scripts

- Clean up some other text files

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1 /*
2  * Copyright (C) 2005-2007 by Jonathan Woithe
3  * Copyright (C) 2005-2007 by Pieter Palmers
4  *
5  * This file is part of FFADO
6  * FFADO = Free Firewire (pro-)audio drivers for linux
7  *
8  * FFADO is based upon FreeBoB.
9  *
10  * This program is free software: you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation, either version 3 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
22  *
23  */
24
25 #ifndef __FFADO_MOTURECEIVESTREAMPROCESSOR__
26 #define __FFADO_MOTURECEIVESTREAMPROCESSOR__
27
28 /**
29  * This class implements MOTU streaming
30  */
31
32 #include "debugmodule/debugmodule.h"
33
34 #include "../generic/StreamProcessor.h"
35 #include "../util/cip.h"
36
37 namespace Streaming {
38
39 class MotuAudioPort;
40 /*!
41  * \brief The Base Class for a MOTU receive stream processor
42  *
43  * This class implements the outgoing stream processing for
44  * motu devices
45  *
46  */
47 class MotuReceiveStreamProcessor
48     : public StreamProcessor
49 {
50
51 public:
52     /**
53      * Create a MOTU receive StreamProcessor
54      * @param port 1394 port
55      * @param dimension number of substreams in the ISO stream
56      *                  (midi-muxed is only one stream)
57      */
58     MotuReceiveStreamProcessor(int port, unsigned int event_size);
59     virtual ~MotuReceiveStreamProcessor() {};
60
61     enum eChildReturnValue processPacketHeader(unsigned char *data, unsigned int length,
62                   unsigned char channel, unsigned char tag, unsigned char sy,
63                   unsigned int cycle, unsigned int dropped);
64     enum eChildReturnValue processPacketData(unsigned char *data, unsigned int length,
65                   unsigned char channel, unsigned char tag, unsigned char sy,
66                   unsigned int cycle, unsigned int dropped);
67
68     virtual bool prepareChild();
69
70 public:
71     virtual unsigned int getEventSize()
72                 {return m_event_size;};
73     virtual unsigned int getMaxPacketSize();
74     virtual unsigned int getEventsPerFrame()
75                     { return 1; }; // FIXME: check
76     virtual unsigned int getNominalFramesPerPacket();
77
78 protected:
79     bool processReadBlock(char *data, unsigned int nevents, unsigned int offset);
80
81 private:
82     bool decodePacketPorts(quadlet_t *data, unsigned int nevents, unsigned int dbc);
83
84     int decodeMotuEventsToPort(MotuAudioPort *, quadlet_t *data, unsigned int offset, unsigned int nevents);
85
86     /*
87      * An iso packet mostly consists of multiple events.  m_event_size
88      * is the size of a single 'event' in bytes.
89      */
90     unsigned int m_event_size;
91 };
92
93
94 } // end of namespace Streaming
95
96 #endif /* __FFADO_MOTURECEIVESTREAMPROCESSOR__ */
97
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