Fujitsu DTV/STB solution driver (FAPex driver) Documentation [V01L00R00]


abst_libvidec.c File Reference

abstraction library source file (Video Decoder driver). More...

Functions

FAPEXOPENRET_T FAPEX_VIDEC_Open (FAPEXOPENARG1_T id, FAPEXOPENARG2_T flags, FAPEXOPENARG3_T argptr)
 open method. This function is called with the systemcall "open".
FAPEXRELRET_T FAPEX_VIDEC_Close (FAPEXRELARG1_T id)
 release method. This function is called with the systemcall "close".
FAPEXIOCRET_T FAPEX_VIDEC_Ioctl (FAPEXIOCARG1_T id, FAPEXIOCARG2_T cmd, FAPEXIOCARG3_T pArg)
 ioctl method. This function is called with the systemcall "ioctl".
FAPEXMMPRET_T FAPEX_VIDEC_Mmap (FAPEXMMPARG1_T start, FAPEXMMPARG2_T length, FAPEXMMPARG3_T prot, FAPEXMMPARG4_T flags, FAPEXMMPARG5_T id, FAPEXMMPARG6_T offset)
 mmap method. This function is called with the systemcall "mmap".
FAPEXMUNMPRET_T FAPEX_VIDEC_Munmap (FAPEXMMPARG1_T start, FAPEXMMPARG2_T length)
 munmap method. This function is called with the systemcall "munmap".

Detailed Description

abstraction library source file (Video Decoder driver).

These function is executed in user space.

Attention:
This program is provided as is. You can redistribute it and/or modify it. Fujitsu Semiconductor Limited accepts no responsibility or liability for any errors or omissions.

Copyright (C) 2008-2010 Fujitsu Semiconductor Limited, All Rights Reserved.


Function Documentation

FAPEXOPENRET_T FAPEX_VIDEC_Open ( FAPEXOPENARG1_T  id,
FAPEXOPENARG2_T  flags,
FAPEXOPENARG3_T  argptr 
)

open method. This function is called with the systemcall "open".

Parameters:
idThe device identifier.
flagsThis parameter indicate a open mode (read only/write only/read-write).
This implementation supports only read-write mode.
argptrargument pointer (FAPEX_VIDEC_OpenParamStrT)
If descriptor for this 'id' has already been opened, this 'argptr' will be invalid.
Return values:
>=0process OK, new file descriptor is returned.
<0process fails, its value is set to errno.
FAPEXRELRET_T FAPEX_VIDEC_Close ( FAPEXRELARG1_T  id )

release method. This function is called with the systemcall "close".

Parameters:
idThe identifier for this descriptor.
Return values:
0process OK
<0process fails, its value is set to errno.
FAPEXIOCRET_T FAPEX_VIDEC_Ioctl ( FAPEXIOCARG1_T  id,
FAPEXIOCARG2_T  cmd,
FAPEXIOCARG3_T  pArg 
)

ioctl method. This function is called with the systemcall "ioctl".

Parameters:
idThe identifier for this descriptor.
cmdThe ioctl command.
pArgThe pointer to the argument of the ioctl command.
Return values:
0process OK
<0process fails, its value is set to errno.

ioctl command(cmd) type:

  • FAPEX_IOCCOM_VIDEC_SET_OUTPUT_DELAY
    set the delay for video display.
    Set value of delay in milliseconds to pArg.
    For Live stream the output delay can be set dynamically. For PVR playback the output delay should be set before starting the video and only positive delay is allowed under PVR environment. The delay is not applicable in the trick modes.

  • FAPEX_IOCCOM_VIDEC_SET_STREAMSEGMENTMODE
    set the video stream segment mode.
    Set video stream segment mode from pArg.
    FAPEX_VIDEC_STREAM_SEGMENT_MODE_FULL specifies the stream segment is normal. FAPEX_VIDEC_STREAM_SEGMENT_MODE_1 specifies the stream segment is of 1seg type as in ISDB-T in japan and Brazil.
FAPEXMMPRET_T FAPEX_VIDEC_Mmap ( FAPEXMMPARG1_T  start,
FAPEXMMPARG2_T  length,
FAPEXMMPARG3_T  prot,
FAPEXMMPARG4_T  flags,
FAPEXMMPARG5_T  id,
FAPEXMMPARG6_T  offset 
)

mmap method. This function is called with the systemcall "mmap".

This function supports accessing of the mapped area for decoded frame buffer.
The 'length' should be value returned by FAPEX_IOCCOM_VIDEC_GET_FRAME_BANK_SIZE command with FAPEX_VIDEC_Ioctl().
For accessing to frame buffer, you should use decodedWidth, decodedHeight, offset_y and offset_c of FAPEX_VIDEC_DecFrameInfoStrT.
This information of FAPEX_VIDEC_DecFrameInfoStrT is got by using FAPEX_IOCCOM_VIDEC_GET_DEC_FRAME_INFO command with FAPEX_VIDEC_Ioctl().

videc_DecFrameInfoStrT.png
Parameters:
startThe memory mapping start pointer.
lengthThe memory mapping size.
protThe desired memory protection.
flagsThe mapping option.
idThe identifier for this descriptor.
offsetThe memory mapping offset value.
Return values:
>0process OK, its value is the mapping address.
<0process fails, its value is set to errno.
FAPEXMUNMPRET_T FAPEX_VIDEC_Munmap ( FAPEXMMPARG1_T  start,
FAPEXMMPARG2_T  length 
)

munmap method. This function is called with the systemcall "munmap".

Parameters:
startThe memory mapping start pointer.
lengthThe memory mapping size.
Return values:
0process OK
<0process fails, its value is set to errno.


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Copyright © 2008-2010 by Fujitsu Semiconductor Limited

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