upnp_tv_device.c

Upnp开发包文件

    if( TvDeviceSetServiceTableVar( TV_SERVICE_CONTROL,
                                    TV_CONTROL_CHANNEL, value ) ) {
        if( UpnpAddToActionResponse( out, "SetChannel",
                                     TvServiceType[TV_SERVICE_CONTROL],
                                     "NewChannel",
                                     value ) != UPNP_E_SUCCESS ) {
            ( *out ) = NULL;
            ( *errorString ) = "Internal Error";
            free( value );
            return UPNP_E_INTERNAL_ERROR;
        }
        free( value );
        return UPNP_E_SUCCESS;
    } else {
        free( value );
        ( *errorString ) = "Internal Error";
        return UPNP_E_INTERNAL_ERROR;
    }

}

/******************************************************************************
 * IncrementChannel
 *
 * Description: 
 *       Increment the channel.  Read the current channel from the state
 *       table, add the increment, and then change the channel.
 *
 * Parameters:
 *   incr -- The increment by which to change the channel.
 *      
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *****************************************************************************/
int
IncrementChannel( IN int incr,
                  IN IXML_Document * in,
                  OUT IXML_Document ** out,
                  OUT char **errorString )
{
    int curchannel,
      newchannel;

    char *actionName = NULL;
    char value[TV_MAX_VAL_LEN];

    if( incr > 0 ) {
        actionName = "IncreaseChannel";
    } else {
        actionName = "DecreaseChannel";
    }

    ithread_mutex_lock( &TVDevMutex );
    curchannel = atoi( tv_service_table[TV_SERVICE_CONTROL].
                       VariableStrVal[TV_CONTROL_CHANNEL] );
    ithread_mutex_unlock( &TVDevMutex );

    newchannel = curchannel + incr;

    if( newchannel < MIN_CHANNEL || newchannel > MAX_CHANNEL ) {
        SampleUtil_Print( "error: can't change to channel %d\n",
                          newchannel );
        ( *errorString ) = "Invalid Channel";
        return UPNP_E_INVALID_PARAM;
    }

    /*
       Vendor-specific code to set the channel goes here 
     */

    sprintf( value, "%d", newchannel );

    if( TvDeviceSetServiceTableVar( TV_SERVICE_CONTROL,
                                    TV_CONTROL_CHANNEL, value ) ) {
        if( UpnpAddToActionResponse( out, actionName,
                                     TvServiceType[TV_SERVICE_CONTROL],
                                     "Channel", value ) != UPNP_E_SUCCESS )
        {
            ( *out ) = NULL;
            ( *errorString ) = "Internal Error";
            return UPNP_E_INTERNAL_ERROR;
        }
        return UPNP_E_SUCCESS;
    } else {
        ( *errorString ) = "Internal Error";
        return UPNP_E_INTERNAL_ERROR;
    }
}

/******************************************************************************
 * TvDeviceDecreaseChannel
 *
 * Description: 
 *       Decrease the channel.  
 *
 * Parameters:
 *   
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *
 *****************************************************************************/
int
TvDeviceDecreaseChannel( IN IXML_Document * in,
                         OUT IXML_Document ** out,
                         OUT char **errorString )
{
    return IncrementChannel( -1, in, out, errorString );

}

/******************************************************************************
 * TvDeviceIncreaseChannel
 *
 * Description: 
 *       Increase the channel.  
 *
 * Parameters:
 *   
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *
 *****************************************************************************/
int
TvDeviceIncreaseChannel( IN IXML_Document * in,
                         OUT IXML_Document ** out,
                         OUT char **errorString )
{
    return IncrementChannel( 1, in, out, errorString );

}

/******************************************************************************
 * TvDeviceSetVolume
 *
 * Description: 
 *       Change the volume, update the TvDevice control service
 *       state table, and notify all subscribed control points of the
 *       updated state.
 *
 * Parameters:
 *  
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *
 *****************************************************************************/
int
TvDeviceSetVolume( IN IXML_Document * in,
                   OUT IXML_Document ** out,
                   OUT char **errorString )
{

    char *value = NULL;

    int volume = 0;

    ( *out ) = NULL;
    ( *errorString ) = NULL;

    if( !( value = SampleUtil_GetFirstDocumentItem( in, "Volume" ) ) ) {
        ( *errorString ) = "Invalid Volume";
        return UPNP_E_INVALID_PARAM;
    }

    volume = atoi( value );

    if( volume < MIN_VOLUME || volume > MAX_VOLUME ) {
        SampleUtil_Print( "error: can't change to volume %d\n", volume );
        ( *errorString ) = "Invalid Volume";
        return UPNP_E_INVALID_PARAM;
    }

    /*
       Vendor-specific code to set the volume goes here 
     */

    if( TvDeviceSetServiceTableVar( TV_SERVICE_CONTROL,
                                    TV_CONTROL_VOLUME, value ) ) {
        if( UpnpAddToActionResponse( out, "SetVolume",
                                     TvServiceType[TV_SERVICE_CONTROL],
                                     "NewVolume",
                                     value ) != UPNP_E_SUCCESS ) {
            ( *out ) = NULL;
            ( *errorString ) = "Internal Error";
            free( value );
            return UPNP_E_INTERNAL_ERROR;
        }
        free( value );
        return UPNP_E_SUCCESS;
    } else {
        free( value );
        ( *errorString ) = "Internal Error";
        return UPNP_E_INTERNAL_ERROR;
    }

}

/******************************************************************************
 * IncrementVolume
 *
 * Description: 
 *       Increment the volume.  Read the current volume from the state
 *       table, add the increment, and then change the volume.
 *
 * Parameters:
 *   incr -- The increment by which to change the volume.
 *      
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *
 *****************************************************************************/
int
IncrementVolume( IN int incr,
                 IN IXML_Document * in,
                 OUT IXML_Document ** out,
                 OUT char **errorString )
{
    int curvolume,
      newvolume;
    char *actionName = NULL;
    char value[TV_MAX_VAL_LEN];

    if( incr > 0 ) {
        actionName = "IncreaseVolume";
    } else {
        actionName = "DecreaseVolume";
    }

    ithread_mutex_lock( &TVDevMutex );
    curvolume = atoi( tv_service_table[TV_SERVICE_CONTROL].
                      VariableStrVal[TV_CONTROL_VOLUME] );
    ithread_mutex_unlock( &TVDevMutex );

    newvolume = curvolume + incr;

    if( newvolume < MIN_VOLUME || newvolume > MAX_VOLUME ) {
        SampleUtil_Print( "error: can't change to volume %d\n",
                          newvolume );
        ( *errorString ) = "Invalid Volume";
        return UPNP_E_INVALID_PARAM;
    }

    /*
       Vendor-specific code to set the channel goes here 
     */

    sprintf( value, "%d", newvolume );

    if( TvDeviceSetServiceTableVar( TV_SERVICE_CONTROL,
                                    TV_CONTROL_VOLUME, value ) ) {
        if( UpnpAddToActionResponse( out, actionName,
                                     TvServiceType[TV_SERVICE_CONTROL],
                                     "Volume", value ) != UPNP_E_SUCCESS )
        {
            ( *out ) = NULL;
            ( *errorString ) = "Internal Error";
            return UPNP_E_INTERNAL_ERROR;
        }
        return UPNP_E_SUCCESS;
    } else {
        ( *errorString ) = "Internal Error";
        return UPNP_E_INTERNAL_ERROR;
    }

}

/******************************************************************************
 * TvDeviceIncrVolume
 *
 * Description: 
 *       Increase the volume. 
 *
 * Parameters:
 *   
 *
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *****************************************************************************/
int
TvDeviceIncreaseVolume( IN IXML_Document * in,
                        OUT IXML_Document ** out,
                        OUT char **errorString )
{

    return IncrementVolume( 1, in, out, errorString );

}

/******************************************************************************
 * TvDeviceDecreaseVolume
 *
 * Description: 
 *       Decrease the volume.
 *
 * Parameters:
 *   
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *
 *****************************************************************************/
int
TvDeviceDecreaseVolume( IN IXML_Document * in,
                        OUT IXML_Document ** out,
                        OUT char **errorString )
{

    return IncrementVolume( -1, in, out, errorString );

}

/******************************************************************************
 * TvDeviceSetColor
 *
 * Description: 
 *       Change the color, update the TvDevice picture service
 *       state table, and notify all subscribed control points of the
 *       updated state.
 *
 * Parameters:
 *   
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *
 *****************************************************************************/
int
TvDeviceSetColor( IN IXML_Document * in,
                  OUT IXML_Document ** out,
                  OUT char **errorString )
{

    char *value = NULL;

    int color = 0;

    ( *out ) = NULL;
    ( *errorString ) = NULL;
    if( !( value = SampleUtil_GetFirstDocumentItem( in, "Color" ) ) ) {
        ( *errorString ) = "Invalid Color";
        return UPNP_E_INVALID_PARAM;
    }

    color = atoi( value );

    if( color < MIN_COLOR || color > MAX_COLOR ) {
        SampleUtil_Print( "error: can't change to color %d\n", color );
        ( *errorString ) = "Invalid Color";
        return UPNP_E_INVALID_PARAM;
    }

    /*
       Vendor-specific code to set the volume goes here 
     */

    if( TvDeviceSetServiceTableVar( TV_SERVICE_PICTURE,
                                    TV_PICTURE_COLOR, value ) ) {
        if( UpnpAddToActionResponse( out, "SetColor",
                                     TvServiceType[TV_SERVICE_PICTURE],
                                     "NewColor",
                                     value ) != UPNP_E_SUCCESS ) {
            ( *out ) = NULL;
            ( *errorString ) = "Internal Error";
            free( value );
            return UPNP_E_INTERNAL_ERROR;
        }
        free( value );
        return UPNP_E_SUCCESS;
    } else {
        free( value );
        ( *errorString ) = "Internal Error";
        return UPNP_E_INTERNAL_ERROR;
    }

}

/******************************************************************************
 * IncrementColor
 *
 * Description: 
 *       Increment the color.  Read the current color from the state
 *       table, add the increment, and then change the color.
 *
 * Parameters:
 *   incr -- The increment by which to change the color.
 *   
 *    IXML_Document * in -  action request document
 *    IXML_Document **out - action result document
 *    char **errorString - errorString (in case action was unsuccessful)
 *****************************************************************************/

int
IncrementColor( IN int incr,
                IN IXML_Document * in,
                OUT IXML_Document ** out,
                OUT char **errorString )
{
    int curcolor,
      newcolor;

    char *actionName;
    char value[TV_MAX_VAL_LEN];