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


TTX Driver

Table of Contents

Introduction
Public Interface

Driver Usage
Driver Relationship
References

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Introduction

The driver provides support for DVB services containing analog teletext and subtitling. The format of the transmitted packets should be according ETS 300 706 specification. In the MPEG transport stream, the teletext and subtitling packets are multiplexed together into a Packetized Elementary Stream (PES) in the format defined by the ETS 300 472. The driver handles re-insertion of teletext data into the VBI-lines of the analog signal output which is supported by the embedded hardware.
The TTX driver uses a predefined buffer and requires a free TSD channel on the same hardware block as the predefined buffer manager to run properly. After providing a PID the TTX driver can be started and stopped at any time.

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Public Interface

System Driver Interface

Driver initialization function

  • Linux:
    The TTX driver module is initialized by following command on target board.
     # modprobe fapex_fdlttx
  • RTOS:
    The TTX driver module is initialized by calling FAPEX_common_init().

Driver exit function

  • Linux:
    The TTX driver module is unregistered by following command on target board.
     # modprobe -rq fapex_fdlttx
  • RTOS:
    The TTX driver module is unregistered by calling FAPEX_common_exit().

Application Programming Interface

Functions and Macros

The driver provides the functions and macros listed below. For more information please follow the links to their detailed documentation.

Open Driver
FAPEX_TTX_Open()
Close Driver
FAPEX_TTX_Close()
I/O control of Driver
FAPEX_TTX_Ioctl()
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Driver Usage

Please refer to following sequence diagram for the usage of this driver.

inline_dotgraph_16.dot
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Driver Relationship

The TTX driver is related with the following drivers:

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References

  • MB86H61 Device Manual
    Chapter 20.Video Decoder
    Chapter 21.Video output (VO)
    Chapter 22.Analog Video Output


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