dvdcontrol.c

基于linux的DVD播放器程序

 * @retval DVD_E_Ok Success.
 * @retval DVD_E_NotImplemented The function is not implemented.
 */
DVDResult_t DVDGetDefaultAudioLanguage(DVDNav_t *nav,
				       DVDLangID_t *const Language,
				       DVDAudioLangExt_t *const AudioExtension)
{
  return DVD_E_NotImplemented;
}


/** 
 * Querry the currently selected angle.
 * @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 DVDGetCurrentAngle(DVDNav_t *nav, int *const AnglesAvailable,
			       DVDAngle_t *const CurrentAngle)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetCurrentAngle;

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

  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlCurrentAngle)) {
      *AnglesAvailable = ev.dvdctrl.cmd.currentangle.anglesavailable;
      *CurrentAngle = ev.dvdctrl.cmd.currentangle.anglenr;
      return DVD_E_Ok;
    }
  }
}

/**
 * Query the  current DVD volume information.
 * @param nav Specifies the connection to the DVD navigator.
 * @param VolumeInfo will get the Volume info of the DVD.
 *
 * @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 DVDGetDVDVolumeInfo(DVDNav_t *nav, 
				DVDVolumeInfo_t *const VolumeInfo)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetDVDVolumeInfo;
 
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }

  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlDVDVolumeInfo)) {
      *VolumeInfo = ev.dvdctrl.cmd.volumeinfo.volumeinfo;
      return DVD_E_Ok;
    }
  }
}

/** 
 * Query the number of Titel tracks on the DVD.
 * @param nav Specifies the connection to the DVD navigator.
 * @param TitlesAvailable Will contain the number of Title tracks.
 *
 * @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 DVDGetTitles(DVDNav_t *nav, int *const TitlesAvailable)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetTitles;

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

  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlTitles)) {
      *TitlesAvailable = ev.dvdctrl.cmd.titles.titles;
      return DVD_E_Ok;
    }
  }
}

/** 
 * Querry the current domain.
 * @param nav Specifies the connection to the DVD navigator.
 * @param Domain Will contain the current domain.
 *
 * @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 DVDGetCurrentDomain(DVDNav_t *nav, DVDDomain_t *const Domain)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetCurrentDomain;

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

  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlCurrentDomain)) {
      *Domain = ev.dvdctrl.cmd.domain.domain;
      return DVD_E_Ok;
    }
  }  
}

/** 
 * Get the current location information.
 * @param nav Specifies the connection to the DVD navigator.
 * @param Location Will contain the current location information.
 *
 * @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 DVDGetCurrentLocation(DVDNav_t *nav, DVDLocation_t *const Location)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetCurrentLocation;

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

  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlCurrentLocation)) {
      *Location = ev.dvdctrl.cmd.location.location;
      return DVD_E_Ok;
    }
  }  
}


/** 
 * Querry the number of Part's (Chapters) for a Title track.
 * @param nav Specifies the connection to the DVD navigator.
 * @param Title The Title track number.
 * @param PartsAvailable Will contain the number of Title tracks.
 *
 * @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 DVDGetNumberOfPTTs(DVDNav_t *nav, DVDTitle_t Title, 
			       int *const PartsAvailable)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetNumberOfPTTs;
  ev.dvdctrl.cmd.parts.title = Title;
  
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlNumberOfPTTs)) {
      *PartsAvailable = ev.dvdctrl.cmd.parts.ptts;
      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 DVDGetCurrentVideoAttributes(DVDNav_t *nav,
					 DVDVideoAttributes_t *const Attr)
{
  return DVD_E_NotImplemented;
}




/**
 * Get the number of available subpicture streams and the current one.
 * @todo handle more return events.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param StreamsAvailable Points to where the number of available 
 * streams will be written.
 * @param CurrentStream Points to where the current stream will be written.
 * @param Display Specifies if the subpicture display is on or off
 *
 * @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 DVDGetCurrentSubpicture(DVDNav_t *nav,
				    int *const StreamsAvailable,
				    DVDSubpictureStream_t *const CurrentStream,
				    DVDBool_t *const Display)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetCurrentSubpicture;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
    
  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlCurrentSubpicture)) {
      *StreamsAvailable = ev.dvdctrl.cmd.currentsubpicture.nrofstreams;
      *CurrentStream = ev.dvdctrl.cmd.currentsubpicture.currentstream;
      *Display = ev.dvdctrl.cmd.currentsubpicture.display;
      return DVD_E_Ok;
    }
  } 
}


/**
 * Checks if the specified subpicture stream is available.
 * @todo handle other return events
 * @todo more return values
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param StreamNr Specifies the subpicture stream to retrieve information
 * for.
 * @param Enabled Specifies if the subpicture stream is enabled or disabled.
 *
 * @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 DVDIsSubpictureStreamEnabled(DVDNav_t *nav,
					 DVDSubpictureStream_t StreamNr,
					 DVDBool_t *const Enabled)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlIsSubpictureStreamEnabled;
  ev.dvdctrl.cmd.subpicturestreamenabled.streamnr = StreamNr;
  
  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlSubpictureStreamEnabled)) {
      if(ev.dvdctrl.cmd.subpicturestreamenabled.streamnr == StreamNr) {
	*Enabled = ev.dvdctrl.cmd.subpicturestreamenabled.enabled;
	return DVD_E_Ok;
      }
    }
  } 
}

/**
 * Get the attributes of the specified subpicture stream.
 * @todo handle other return events.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param StreamNr Specifies which subpicture stream attributes
 * will be retrieved for.
 * @param Attr Points to where the attributes of the specified
 * subpicture stream will be written.
 *
 * @return If successful DVD_E_Ok is returned and the attributes
 * pointed to by Attr have been updated. Otherwise an error code
 * is returned.
 *
 * @retval DVD_E_Ok Success.
 * @retval DVD_E_FailedToSend Failed to send the request. 
 */
DVDResult_t DVDGetSubpictureAttributes(DVDNav_t *nav,
				       DVDSubpictureStream_t StreamNr,
				       DVDSubpictureAttributes_t *const Attr)
{
  MsgEvent_t ev;
  int32_t serial;
  ev.type = MsgEventQDVDCtrl;
  DVD_SETSERIAL(nav, ev.dvdctrl.cmd);
  serial = ev.dvdctrl.cmd.any.serial;
  ev.dvdctrl.cmd.type = DVDCtrlGetSubpictureAttributes;
  ev.dvdctrl.cmd.subpictureattributes.streamnr = StreamNr;

  if(MsgSendEvent(nav->msgq, nav->client, &ev, 0) == -1) {
    return DVD_E_FailedToSend;
  }
  
  while(1) {
    if(MsgNextEvent(nav->msgq, &ev) == -1) {
      return DVD_E_Unspecified;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlRetVal) &&
       (ev.dvdctrl.cmd.retval.serial == serial)) {
      return ev.dvdctrl.cmd.retval.val;
    }
    if((ev.type == MsgEventQDVDCtrl) &&
       (ev.dvdctrl.cmd.type == DVDCtrlSubpictureAttributes)) {
      if(ev.dvdctrl.cmd.subpictureattributes.streamnr == StreamNr) {
	memcpy((void *)Attr,
	       (void *)&(ev.dvdctrl.cmd.subpictureattributes.attr),
	       sizeof(DVDSubpictureAttributes_t));
	return DVD_E_Ok;
      }
    }
  } 
}


/** 
 * Get the language of an subpicture stream.
 * @todo Implement function.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param StreamNr Specifies the subpicture stream which laguage code
 * will be retrieved.
 * @param Language Points to where the language code of the
 * specified subpicture stream will be written.
 *
 * @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 DVDGetSubpictureLanguage(DVDNav_t *nav,
				     DVDSubpictureStream_t StreamNr,
				     DVDLangID_t *const Language)
{
  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 DVDGetDefaultSubpictureLanguage(DVDNav_t *nav,
					    DVDLangID_t *const Language,
					    DVDSubpictureLangExt_t *const SubpictureExtension)
{
  return DVD_E_NotImplemented;
}

/**
 * Get the state
 * @todo handle other return events.
 * @todo more return values.
 *
 * @param nav Specifies the connection to the DVD navigator.
 * @param state This will be set to point to the returned state.
 * Use free() when not needed any more. 
 *
 * @return If successful DVD_E_Ok is returned and the char pointer pointed
 * to by state will be updated. Otherwise an error code  is returned.
 *
 * @retval DVD_E_Ok Success.