rpi: register callback for HPD. re-read the physical address when we received VC_HDMI...

[deb_libcec.git] / src / lib / adapter / AdapterCommunication.h

#pragma once
/*
 * This file is part of the libCEC(R) library.
 *
 * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited.  All rights reserved.
 * libCEC(R) is an original work, containing original code.
 *
 * libCEC(R) is a trademark of Pulse-Eight Limited.
 *
 * This program is dual-licensed; 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.
 *
 *
 * Alternatively, you can license this library under a commercial license,
 * please contact Pulse-Eight Licensing for more information.
 *
 * For more information contact:
 * Pulse-Eight Licensing       <license@pulse-eight.com>
 *     http://www.pulse-eight.com/
 *     http://www.pulse-eight.net/
 */

#include <string>

namespace CEC
{
  class CLibCEC;

  typedef enum cec_adapter_message_state
  {
    ADAPTER_MESSAGE_STATE_UNKNOWN = 0,        /**< the initial state */
    ADAPTER_MESSAGE_STATE_WAITING_TO_BE_SENT, /**< waiting in the send queue of the adapter, or timed out */
    ADAPTER_MESSAGE_STATE_SENT,               /**< sent and waiting on an ACK */
    ADAPTER_MESSAGE_STATE_SENT_NOT_ACKED,     /**< sent, but failed to ACK */
    ADAPTER_MESSAGE_STATE_SENT_ACKED,         /**< sent, and ACK received */
    ADAPTER_MESSAGE_STATE_INCOMING,           /**< received from another device */
    ADAPTER_MESSAGE_STATE_ERROR               /**< an error occured */
  } cec_adapter_message_state;

  class IAdapterCommunicationCallback
  {
  public:
    IAdapterCommunicationCallback(void) {}
    virtual ~IAdapterCommunicationCallback(void) {}

    /*!
     * @brief Callback method for IAdapterCommunication, called when a new cec_command is received
     * @param command The command that has been received
     * @return True when it was handled by this listener, false otherwise.
     */
    virtual bool OnCommandReceived(const cec_command &command) = 0;

    /*!
     * @brief Callback method for IAdapterCommunication, called when a poll was received.
     * @param initiator The initiator that sent the poll.
     * @param destination The destination of the poll message.
     */
    virtual void HandlePoll(cec_logical_address initiator, cec_logical_address destination) = 0;

    /*!
     * @brief Callback method for IAdapterCommunication, called when a receive failed message was received.
     * @param initiator The initiator that sent the receive failed message.
     * @return True when this is an error, false otherwise.
     */
    virtual bool HandleReceiveFailed(cec_logical_address initiator) = 0;

    /*!
     * @brief Callback method for IAdapterCommunication, called when a logical address that libCEC uses was taken by another device.
     * @param oldAddress The logical address that was taken by another device.
     */
    virtual void HandleLogicalAddressLost(cec_logical_address oldAddress) = 0;

    /*!
     * @brief Callback method for IAdapterCommunication, called when the physical address changed.
     * @param iNewAddress The new physical address.
     */
    virtual void HandlePhysicalAddressChanged(uint16_t iNewAddress) = 0;

    virtual CLibCEC *GetLib(void) const = 0;
  };

  class IAdapterCommunication
  {
  public:
    /*!
     * @param callback The callback struct. if set to NULL, the Read() method has to be used to read commands. if set, OnCommandReceived() will be called for each command that was received
     */
    IAdapterCommunication(IAdapterCommunicationCallback *callback) :
      m_callback(callback) {}
    virtual ~IAdapterCommunication(void) {}

    /*!
     * @brief Open a connection to the CEC adapter
     * @param iTimeoutMs Connection timeout in ms
     * @param bSkipChecks Skips all initial checks of the adapter, and starts the reader/writer threads directly after connecting.
     * @param bStartListening Start a listener thread when true. False to just open a connection, read the device info, and close the connection.
     * @return True when connected, false otherwise
     */
    virtual bool Open(uint32_t iTimeoutMs = CEC_DEFAULT_CONNECT_TIMEOUT, bool bSkipChecks = false, bool bStartListening = true) = 0;

    /*!
     * @brief Close an open connection
     */
    virtual void Close(void) = 0;

    /*!
     * @return True when the connection is open, false otherwise
     */
    virtual bool IsOpen(void) = 0;

    /*!
     * @return The last error message, or an empty string if there was none
     */
    virtual std::string GetError(void) const = 0;

    /*!
     * @brief Write a cec_command to the adapter
     * @param data The command to write
     * @param bRetry The command can be retried
     * @param iLineTimeout The line timeout to be used
     * @param bIsReply True when this message is a reply, false otherwise
     * @return The last state of the transmitted command
     */
    virtual cec_adapter_message_state Write(const cec_command &data, bool &bRetry, uint8_t iLineTimeout, bool bIsReply) = 0;

    /*!
     * @brief Change the current line timeout on the CEC bus
     * @param iTimeout The new timeout
     * @return True when set, false otherwise
     */
    virtual bool SetLineTimeout(uint8_t iTimeout) = 0;

    /*!
     * @brief Put the device in bootloader mode (which will disrupt CEC communication when it succeeds)
     * @return True when the bootloader command has been sent, false otherwise.
     */
    virtual bool StartBootloader(void) = 0;

    virtual bool SetLogicalAddresses(const cec_logical_addresses &addresses) = 0;
    virtual cec_logical_addresses GetLogicalAddresses(void) = 0;

    /*!
     * @brief Check whether the CEC adapter responds
     * @return True when the ping was sent and acked, false otherwise.
     */
    virtual bool PingAdapter(void) = 0;

    /*!
     * @return The firmware version of this CEC adapter, or 0 if it's unknown.
     */
    virtual uint16_t GetFirmwareVersion(void) = 0;

    /*!
     * @return The build date in seconds since epoch, or 0 when no (valid) reply was received.
     */
    virtual uint32_t GetFirmwareBuildDate(void) = 0;

    /*!
     * @return True when this adapter is using the latest firmware build, or when the latest firmware build for this adapter type is unknown. False otherwise.
     */
    virtual bool IsRunningLatestFirmware(void) = 0;

    /*!
     * @return True when the control mode has been set, false otherwise.
     */
    virtual bool SetControlledMode(bool controlled) = 0;

    /*!
     * @brief Persist the given configuration in adapter (if supported)
     * @brief The configuration to store.
     * @return True when the configuration was persisted, false otherwise.
     */
    virtual bool PersistConfiguration(const libcec_configuration &configuration) = 0;

    /*!
     * @brief Get the persisted configuration from the adapter (if supported)
     * @param configuration The updated configuration.
     * @return True when the configuration was updated, false otherwise.
     */
    virtual bool GetConfiguration(libcec_configuration &configuration) = 0;

    /*!
     * @return The name of the port
     */
    virtual std::string GetPortName(void) = 0;

    /*!
     * @return The physical address, if the adapter supports this. 0 otherwise.
     */
    virtual uint16_t GetPhysicalAddress(void) = 0;

    /*!
     * @return The vendor id for this device
     */
    virtual cec_vendor_id GetVendorId(void) = 0;

    /*!
     * @brief Checks whether a logical address is supported by the adapter.
     * @param address The address to check.
     * @return True when supported, false otherwise.
     */
    virtual bool SupportsSourceLogicalAddress(const cec_logical_address address) = 0;

    /*!
     * @return The type of adapter that this instance is connected to.
     */
    virtual cec_adapter_type GetAdapterType(void) = 0;

    /*!
     * @return The (virtual) USB vendor id
     */
    virtual uint16_t GetAdapterVendorId(void) const = 0;

    /*!
     * @return The (virtual) USB product id
     */
    virtual uint16_t GetAdapterProductId(void) const = 0;

    /*!
     * @brief Marks the adapter as active or inactive source
     * @param bSetTo True to mark as active source, false to mark as inactive source
     * @param bClientUnregistered True when the client was unregistered, false when the device was explicitly marked as (in)active source
     */
    virtual void SetActiveSource(bool bSetTo, bool bClientUnregistered) = 0;

    IAdapterCommunicationCallback *m_callback;
  };
};