Texas Instruments TMS320DM6446 DVEVM v2.0 manual Software Components, Dmai

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Software Overview

4.1.2Software Components

The following figure shows the software components used for application development with the DVEVM kit:

I/O

I/O

I/O

Operating System

Adaptation Layer

(OSAL)

Application

DMAI

VISA API

Codec Engine

VID	IMG
SPH	AUD

Engine

Server

VISA API

Video-Node -Task

xDM Video API Codec

S-Node Speech-Task

xDM Speech

API

Image-Node -Task

xDM Imaging API Codec

A-Node Audio-Task

xDM Audio API Codec

User Space

Kernel Space

xDMAPI SpeechCodec

LinuxAPIs

Codec

Framework	Codec
Components

	CMEM			USB 2.0				EMAC
	Driver			Driver				Driver

	File			MMC/SD				SPI
	(ATA)			Driver				Driver

	GP			Watchdg				I2C
	GP			Watchdg				I2C
	TimerI/O			TimerI/O			DriverI/O

	Video		Audio
	Driver		Driver

	Link		UART
	Driver		Driver

			DSP/BIOS™Link

DMAN3	ACPY3	Engine
		Remote
		Remote
DSKT2	RMAN	Server
		Server

DSP/BIOS™

ARMSubsystem

Transport

DSP Subsystem + Co-Processor

In the previous figure, your application runs on the ARM subsystem. It handles I/O and application processing. To process video, image, speech, and audio signals it uses the VISA APIs provided by the Codec Engine. The Codec Engine, in turn, uses services such as DSP/BIOS Link and protocols such as xDAIS and xDM to communicate with a pre- configured Codec Engine Remote Server on the DSP subsystem. The DSP handles signal processing and the results are available to the ARM subsystem in shared memory. For more information, see the Codec Engine Application Developer's Guide (SPRUE67).

In addition, Linux running on the ARM makes a large number of APIs available to your application, including drivers and timers.

4-4

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Contents TMS320DM6446 Dvevm Getting Started Guide Important Notice Evaluation BOARD/KIT Important Notice FCC Warning Preface About This GuideNotational Conventions Contents Contents Dvevm Overview Welcome What’s in this Kit? EVM Hardware Block Diagram What’s on the Board?What’s Next? Page EVM Hardware Setup Setting Up the Hardware EVM Hardware Setup Setting Up the Hardware Setting Up the Hardware Connecting to a Console Window Running the Demonstration Software Default Boot Configuration Starting the Standalone DemosStarting the Standalone Demos Running the Standalone Demos Shutting Down the Demos About the Encode + Decode Demo IR Remote Buttons for Encode + Decode DemoAbout the Encode Demo IR Remote Buttons for Encode DemoAbout the Decode Demo Running the Demos from the Command Line About the Third Party MenuTarget $ cd /opt/dvsdk/dm6446 Running the Network Demo Page Dvevm Software Setup Software Overview Command Prompts in This Guide Software Components DmaiPreparing to Install Installing the SoftwareInstalling the Target Linux Software Installing the Dvsdk Software Installing the A/V Demo Files Installing the SoC Analyzer Exporting a Shared File System for Target AccessVerify that the server firewall is turned off Testing the Shared File System EVM # setenv nfshost ip address of nfs hostConfiguring the Boot Setup for PAL Video Users Setting Up the Build/Development Environment Writing a Simple Program and Running it on the EVMBuilding a New Linux Kernel Enable Linux Trace Toolkit Support as built-in Rebuilding the Dvevm Software for the Target Booting the New Linux Kernel EVM # setenv serverip tftp server ip addressTesting the Build Environment Using the Digital Video Test Bench DvtbRelease Notes User Guide Running The SoC Analyzer Documentation for DSP-Side Development Documentation for Dvsdk ComponentsXDAIS-DM Digital Additional Procedures Using S-Video Input Changing the Video Input/Output MethodsUsing S-Video Output OUTUsing Component Video Output Pr PbPutting Demo Applications in the Third-Party Menu File filename.tar.gz Setting Up a Tftp Server You should see the following outputAlternate Boot Methods Booting from Flash Using the EVM’s Hard Drive File SystemBooting via Tftp Using the EVM’s Hard Drive File System Booting from Flash Using NFS File System Booting via Tftp Using NFS File SystemRebuilding DSP/BIOS Link System Setup Restoring and Updating the EVM Hard Disk DriveConfigure EVM for NFS Root Mount Restore the EVM Hard Disk Drive Restoring From Target EVM HDD PartitionRestoring From Host Linux Workstation File System Go to the /restore directory Index Index--2 Index--3 Index--4 Page Spectrum Digital, Inc 508168-0001C