dvdcontrol.c

基于linux的DVD播放器程序

/** 
 * @todo more return values.
 * @todo better description.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDTimeSearch(DVDNav_t *nav, DVDTimecode_t time)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlTimeSearch;
  ev.dvdctrl.cmd.timesearch.time = time;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/** 
 * @todo more return values.
 * @todo better description.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDTimePlay(DVDNav_t *nav, DVDTitle_t Title, DVDTimecode_t time)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlTimePlay;
  ev.dvdctrl.cmd.timeplay.title = Title;
  ev.dvdctrl.cmd.timeplay.time = time;
  
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}

/** 
 * Skip seconds forwards or backwards.
 * The dvd navigator might not be able to jump to the exact number
 * of seconds, but will do the best it can.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDTimeSkip(DVDNav_t *nav, int32_t seconds)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlTimeSkip;
  ev.dvdctrl.cmd.timeskip.seconds = seconds;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}

/** 
 * Pause playback.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDPauseOn(DVDNav_t *nav)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlPauseOn;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/** 
 * Resume playback if in pause mode.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDPauseOff(DVDNav_t *nav)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlPauseOff;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/** 
 * @todo Implement function.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDStop(DVDNav_t *nav)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlStop;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}



/**
 * Select the default menu language
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param Lang Specifies the language.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDDefaultMenuLanguageSelect(DVDNav_t *nav, DVDLangID_t Lang)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlDefaultMenuLanguageSelect;
  ev.dvdctrl.cmd.defaultmenulanguageselect.langid = Lang;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/** 
 * Change the audio stream
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param StreamNr Specifies which audio stream to decode
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDAudioStreamChange(DVDNav_t *nav, DVDAudioStream_t StreamNr)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlAudioStreamChange;
  ev.dvdctrl.cmd.audiostreamchange.streamnr = StreamNr;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}

/** 
 * Selects the default audio language.
 * @todo more return values
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param Lang Specifies the lanugage id.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_Unspecified.
 */
DVDResult_t DVDDefaultAudioLanguageSelect(DVDNav_t *nav, DVDLangID_t Lang)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlDefaultAudioLanguageSelect;
  ev.dvdctrl.cmd.defaultaudiolanguageselect.langid = Lang;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/** 
 * @todo Implement function.
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_NotImplemented The function is not implemented.
 */
DVDResult_t DVDKaraokeAudioPresentationMode(DVDNav_t *nav, DVDKaraokeDownmixMask_t DownmixMode)
{
  return DVD_E_NotImplemented;
}



/**
 * @todo Implement function
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDAngleChange(DVDNav_t *nav, DVDAngle_t AngleNr)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlAngleChange;
  ev.dvdctrl.cmd.anglechange.anglenr = AngleNr;
  
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/**
 * @todo Implement function
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_NotImplemented The function is not implemented.
 */
DVDResult_t DVDStillOff(DVDNav_t *nav)
{
  return DVD_E_NotImplemented;
}


/**
 * @todo Implement function
 *
 * @param nav Specifies the connection to the DVD navigator.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_NotImplemented The function is not implemented.
 */
DVDResult_t DVDVideoPresentationModeChange(DVDNav_t *nav,
					   DVDDisplayMode_t mode)
{
  return DVD_E_NotImplemented;
}


/**
 * Selects the default subpicture language.
 * @todo more return values
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param Lang Specifies the language id.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_Unspecified.
 */
DVDResult_t DVDDefaultSubpictureLanguageSelect(DVDNav_t *nav, DVDLangID_t Lang)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlDefaultSubpictureLanguageSelect;
  ev.dvdctrl.cmd.defaultsubpicturelanguageselect.langid = Lang;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/**
 * Change the subpicture stream.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param SubpictureNr Specifies which subpicture stream to change to.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDSubpictureStreamChange(DVDNav_t *nav,
				      DVDSubpictureStream_t SubpictureNr)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlSubpictureStreamChange;
  ev.dvdctrl.cmd.subpicturestreamchange.streamnr = SubpictureNr;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/**
 * Set the display of subpictures on or off.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param Display Specifies wheter to disaply or hide subpictures.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDSetSubpictureState(DVDNav_t *nav, DVDBool_t Display)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlSetSubpictureState;
  ev.dvdctrl.cmd.subpicturestate.display = Display;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/**
 * Select the country for parental check.
 * @todo more return values
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param country Specifies the country id.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDParentalCountrySelect(DVDNav_t *nav, DVDCountryID_t country)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlParentalCountrySelect;
  ev.dvdctrl.cmd.parentalcountryselect.countryid = country;
  
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/**
 * Selects the parental level.
 * @todo more return values
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param level Specifies the parental level.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDParentalLevelSelect(DVDNav_t *nav, DVDParentalLevel_t level)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  ev.dvdctrl.cmd.type = DVDCtrlParentalLevelSelect;
  ev.dvdctrl.cmd.parentallevelselect.level = level;
  
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  return DVD_E_Ok;
}


/**
 * Selects the region of the player.
 * @todo more return values
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param level Specifies the region.
 *
 * @return If successful DVD_E_Ok is returned. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request.
 */
DVDResult_t DVDPlayerRegionSelect(DVDNav_t *nav, DVDPlayerRegion_t region)
{
  MsgEvent_t ev;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETS