00001 
00002 #define DVR_DEC_IOC_MAGIC   'H'
00003 
00004 /** 
00005  * \b ioctl(dec_fd, DVR_DEC_SET_CHANNEL_PARAM, &ch_param) 
00006  *
00007  * \arg explanation : get channel parameter from user space ,and set parameter to device driver
00008  * \arg parameter : 
00009  * \n \b \e pointer \b \e ch_param : argument from user space ioctl parameter, it means structure dvr_dec_channel_param
00010  *  
00011  */
00012 #define DVR_DEC_SET_CHANNEL_PARAM           _IOWR(DVR_DEC_IOC_MAGIC, 2, dvr_dec_channel_param) 
00013 
00014 /** 
00015  * \b ioctl(dec_fd, DVR_DEC_GET_CHANNEL_PARAM, &ch_param) 
00016  * 
00017  * \arg explanation : get channel parameter from user space
00018  * \arg parameter : 
00019  * \n \b \e pointer \b \e ch_param : argument from user space ioctl parameter, it means structure dvr_dec_channel_param     
00020  */
00021 #define DVR_DEC_GET_CHANNEL_PARAM           _IO(DVR_DEC_IOC_MAGIC, 3)
00022 
00023 /**
00024  * \b ioctl(dec_fd, DVR_DEC_QUEUE_GET, &data)
00025  *
00026  * \arg explanation : Get buffer to user space. It includes the buffer length, offset.
00027  * \arg parameter : 
00028  * \n \b \e pointer \b \e data : argument from user space ioctl parameter, it means structure dvr_dec_queue_get
00029  */
00030 #define DVR_DEC_QUEUE_GET                   _IOWR(DVR_DEC_IOC_MAGIC, 5, dvr_dec_queue_get)
00031 
00032 /**
00033  * \b ioctl(dec_fd, DVR_DEC_QUEUE_PUT, &data)
00034  *
00035  * \arg explanation : get buffer from user space, and release buffer at videograph layer
00036  * \arg parameter :
00037  * \n \b \e pointer \b \e data : argument from user space ioctl parameter, it means structure dvr_dec_queue_get
00038  */
00039 #define DVR_DEC_QUEUE_PUT                   _IOWR(DVR_DEC_IOC_MAGIC, 6, dvr_dec_queue_get)
00040 
00041 /**
00042  * \b ioctl(dec_fd, DVR_DEC_CONTROL, &dec_ctrl)
00043  *
00044  * \arg explanation : get decode contorl command from user space, and set command to videograph layer
00045  * \arg parameter :
00046  * \n  \b \e pointer \b \e dec_ctrl : argument from user space ioctl parameter, it means structure dvr_dec_control
00047  */
00048 #define DVR_DEC_CONTROL                     _IOW(DVR_DEC_IOC_MAGIC, 7, dvr_dec_control)
00049 
00050 /**
00051  * \b ioctl(dec_fd, DVR_DEC_QUERY_OUTPUT_BUFFER_SIZE, &dec_buf_size)
00052  * 
00053  * \arg explanation : get output buffer size for dvr decode to user space.                      
00054  * \arg parameter : 
00055  * \n \b \e pointer \b \e dec_buf_size : argument from user space ioctl parameter, it means request buffer size.
00056  */
00057 #define DVR_DEC_QUERY_OUTPUT_BUFFER_SIZE    _IOWR(DVR_DEC_IOC_MAGIC, 8, int)
00058 
00059 /**
00060  * \b ioctl(dec_fd, DVR_DEC_CLEAR_WIN, &dec_clear_param)
00061  * 
00062  * \arg explanation : to prevent lcd unexpected image, when stop playback, then start another playback, 
00063  * \n use flow : ioctl(dvr_fd,DVR_COMMON_APPLY,&data);   //stop current playback
00064  * \n            ................
00065  * \n            ioctl(dec_fd,DVR_DEC_CLEAR_WIN,&data);  //must after stop, and before start apply
00066  * \n            ioctl(dvr_fd,DVR_COMMON_APPLY,&data);   //start new playback
00067  * \arg parameter : 
00068  * \n \b \e pointer \b \e dec_clear_param : argument from user space ioctl parameter, it means structure dvr_dec_clear_param.
00069  * 
00070  */
00071 #define DVR_DEC_CLEAR_WIN                   _IOW(DVR_DEC_IOC_MAGIC, 18, dvr_dec_clear_param)
00072 
00073 /**
00074  * \b ioctl(dec_fd, DVR_DEC_CLEAR_WIN2, &dec_clear_param)
00075  * 
00076  * \arg explanation : to prevent lcd unexpected image, when update current playback
00077  * \n use flow :  dec_ctrl.command = DEC_UPDATE;
00078  * \n             ioctl(dec_fd, DVR_DEC_CONTROL, &dec_ctrl);
00079  * \n             ioctl(dec_fd, DVR_DEC_CLEAR_WIN2, &data); // tell VG to clear buffer after apply
00080  * \n             ioctl(dvr_fd, DVR_COMMON_APPLY, &data);
00081  * \arg parameter : 
00082  * \n \b \e pointer \b \e dec_clear_param : argument from user space ioctl parameter, it means structure dvr_dec_clear_param.
00083  * 
00084  */
00085 #define DVR_DEC_CLEAR_WIN2                  _IOW(DVR_DEC_IOC_MAGIC, 19, dvr_dec_clear_param)