root/trunk/libffado/src/libstreaming/amdtp-oxford/AmdtpOxfordReceiveStreamProcessor.h

Revision 2803, 2.7 kB (checked in by jwoithe, 3 years ago)

Cosmetic: capitalise "L" in "Linux".

"Linux" is a proper noun so it should start with a capital letter. These
changes are almost all within comments.

This patch was originally proposed by pander on the ffado-devel mailing
list. It has been expanded to cover all similar cases to maintain
consistency throughout the source tree.

Line 
1 /*
2  * Copyright (C) 2005-2009 by Pieter Palmers
3  *
4  * This file is part of FFADO
5  * FFADO = Free FireWire (pro-)audio drivers for Linux
6  *
7  * FFADO is based upon FreeBoB.
8  *
9  * This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation, either version 2 of the License, or
12  * (at your option) version 3 of the License.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  *
22  */
23
24 #ifndef __FFADO_AMDTPOXFORDRECEIVESTREAMPROCESSOR__
25 #define __FFADO_AMDTPOXFORDRECEIVESTREAMPROCESSOR__
26
27 /**
28  * This class implements IEC61883-6 / AM824 / AMDTP based streaming
29  *
30  * but with all quircks required to make the oxford FW-92x devices working
31  */
32
33 #include "debugmodule/debugmodule.h"
34
35 #include "../amdtp/AmdtpReceiveStreamProcessor.h"
36 #include "libutil/ringbuffer.h"
37
38 namespace Streaming {
39
40 /*!
41 \brief The Base Class for an Oxford AMDTP receive stream processor
42
43  This class implements a ReceiveStreamProcessor that demultiplexes
44  AMDTP streams into Ports. (Oxford style)
45
46 */
47 class AmdtpOxfordReceiveStreamProcessor
48     : public AmdtpReceiveStreamProcessor
49 {
50
51 public:
52     /**
53      * Create a Oxford AMDTP 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     AmdtpOxfordReceiveStreamProcessor(FFADODevice &parent, int dimension);
59     virtual ~AmdtpOxfordReceiveStreamProcessor();
60
61     virtual enum eChildReturnValue processPacketHeader(unsigned char *data, unsigned int length,
62                                                        unsigned char tag, unsigned char sy,
63                                                        uint32_t pkt_ctr);
64     virtual enum eChildReturnValue processPacketData(unsigned char *data, unsigned int length);
65
66     virtual bool prepareChild();
67
68 protected:
69     // packet start timestamp
70     uint64_t m_next_packet_timestamp;
71    
72     // this contains the payload data
73     ffado_ringbuffer_t *m_temp_buffer;
74    
75     unsigned int m_packet_size_bytes;
76     char *m_payload_buffer;
77    
78     // dll stuff
79     double m_dll_e2;
80     float m_dll_b;
81     float m_dll_c;
82     uint64_t m_expected_time_of_receive;
83     float m_nominal_ticks_per_frame;
84 };
85
86
87 } // end of namespace Streaming
88
89 #endif /* __FFADO_AMDTPOXFORDRECEIVESTREAMPROCESSOR__ */
90
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