3 * This file is part of the libCEC(R) library.
5 * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited. All rights reserved.
6 * libCEC(R) is an original work, containing original code.
8 * libCEC(R) is a trademark of Pulse-Eight Limited.
10 * This program is dual-licensed; 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 2 of the License, or
13 * (at your option) any later version.
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.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Alternatively, you can license this library under a commercial license,
26 * please contact Pulse-Eight Licensing for more information.
28 * For more information contact:
29 * Pulse-Eight Licensing <license@pulse-eight.com>
30 * http://www.pulse-eight.com/
31 * http://www.pulse-eight.net/
34 #include "lib/platform/threads/threads.h"
35 #include "lib/platform/util/buffer.h"
37 #include "USBCECAdapterMessage.h"
41 class CUSBCECAdapterCommunication
;
42 class CCECAdapterMessageQueue
;
43 class CCECAdapterMessage
;
45 class CCECAdapterMessageQueueEntry
48 CCECAdapterMessageQueueEntry(CCECAdapterMessageQueue
*queue
, CCECAdapterMessage
*message
);
49 virtual ~CCECAdapterMessageQueueEntry(void);
52 * @brief Signal waiting threads
57 * @brief Called when a message was received.
58 * @param message The message that was received.
59 * @return True when this message was handled by this entry, false otherwise.
61 bool MessageReceived(const CCECAdapterMessage
&message
);
64 * @brief Wait for a response to this command.
65 * @param iTimeout The timeout to use while waiting.
66 * @return True when a response was received before the timeout passed, false otherwise.
68 bool Wait(uint32_t iTimeout
);
71 * @return True while a thread is waiting for a signal or isn't waiting yet, false otherwise.
76 * @return The msgcode of the command that was sent.
78 cec_adapter_messagecode
MessageCode(void);
81 * @brief Check whether a message is a response to this command.
82 * @param msg The message to check.
83 * @return True when it's a response, false otherwise.
85 bool IsResponse(const CCECAdapterMessage
&msg
);
86 bool IsResponseOld(const CCECAdapterMessage
&msg
);
89 * @return The command that was sent in human readable form.
91 const char *ToString(void) const;
94 * @brief Called when a 'command accepted' message was received.
95 * @param message The message that was received.
96 * @return True when the message was handled, false otherwise.
98 bool MessageReceivedCommandAccepted(const CCECAdapterMessage
&message
);
101 * @brief Called when a 'transmit succeeded' message was received.
102 * @param message The message that was received.
103 * @return True when the message was handled, false otherwise.
105 bool MessageReceivedTransmitSucceeded(const CCECAdapterMessage
&message
);
108 * @brief Called when a message that's not a 'command accepted' or 'transmit succeeded' message was received.
109 * @param message The message that was received.
110 * @return True when the message was handled, false otherwise.
112 bool MessageReceivedResponse(const CCECAdapterMessage
&message
);
115 * @brief Signals the waiting thread.
119 bool ProvidesExtendedResponse(void);
121 CCECAdapterMessageQueue
* m_queue
;
122 CCECAdapterMessage
* m_message
; /**< the message that was sent */
123 uint8_t m_iPacketsLeft
; /**< the amount of acks that we're waiting on */
124 bool m_bSucceeded
; /**< true when the command received a response, false otherwise */
125 bool m_bWaiting
; /**< true while a thread is waiting or when it hasn't started waiting yet */
126 PLATFORM::CCondition
<bool> m_condition
; /**< the condition to wait on */
127 PLATFORM::CMutex m_mutex
; /**< mutex for changes to this class */
130 class CCECAdapterMessageQueue
: public PLATFORM::CThread
132 friend class CUSBCECAdapterCommunication
;
133 friend class CCECAdapterMessageQueueEntry
;
137 * @brief Create a new message queue.
138 * @param com The communication handler callback to use.
139 * @param iQueueSize The outgoing message queue size.
141 CCECAdapterMessageQueue(CUSBCECAdapterCommunication
*com
);
142 virtual ~CCECAdapterMessageQueue(void);
145 * @brief Signal and delete everything in the queue
150 * @brief Called when a message was received from the adapter.
151 * @param msg The message that was received.
153 void MessageReceived(const CCECAdapterMessage
&msg
);
156 * @brief Adds received data to the current frame.
157 * @param data The data to add.
158 * @param iLen The length of the data to add.
160 void AddData(uint8_t *data
, size_t iLen
);
163 * @brief Transmit a command to the adapter and wait for a response.
164 * @param msg The command to send.
165 * @return True when written, false otherwise.
167 bool Write(CCECAdapterMessage
*msg
);
169 bool ProvidesExtendedResponse(void);
171 virtual void *Process(void);
174 CUSBCECAdapterCommunication
* m_com
; /**< the communication handler */
175 PLATFORM::CMutex m_mutex
; /**< mutex for changes to this class */
176 std::map
<uint64_t, CCECAdapterMessageQueueEntry
*> m_messages
; /**< the outgoing message queue */
177 PLATFORM::SyncedBuffer
<CCECAdapterMessageQueueEntry
*> m_writeQueue
; /**< the queue for messages that are to be written */
178 uint64_t m_iNextMessage
; /**< the index of the next message */
179 CCECAdapterMessage
*m_incomingAdapterMessage
; /**< the current incoming message that's being assembled */
180 cec_command m_currentCECFrame
; /**< the current incoming CEC command that's being assembled */