codec engine 编译

来自http://code.google.com/p/opencv-dsp-acceleration/wiki/GettingStarted1

Introduction

Installing DSP/BIOS Link, Code Generation Tools, DSP BIOS, XDC Tools, LPM, CMEM and Codec Engine.

The following tools were used for this project. The download link is also provided.

DSP/BIOS Link 1.64 [DSPLink]

cgt_c6000_7.0.1 [Code Generation Tools]

DSP/BIOS 5.41.00.06 [DSP/BIOS]

XDC tools 3.16.00.18 [XDC Tools]

Codec Engine 2.25.02.11 [Codec Engine with cetools]

All the tools were saved on my Desktop at /home/jars/Desktop. Which will be called<Base_Download_Dir>.

Install DSP/BIOS Link

First untar the DSP/BIOS Link (DSP Link) inside a folder in your working directory. In my case it is /home/jars/Dsp_gsoc, which I will name '<work>' for quick reference.

 # mkdir -p <work>/dsplink # cd <work>/dsplink # tar -xvzf <Base_Download_Dir>/dsplink_linux_1_64.tar.gz

Before we can proceed further, we need to install Code Generation Tools, DSP/BIOS and XDC Tools. These comes in binary form and can be directly installed after making them executable.

 # chmod +x <Base_Download_Dir>/ti_cgt_c6000_7.0.1_setup_linux_x86.bin # chmod +x <Base_Download_Dir>/bios_setuplinux_5_41_00_06.bin # chmod +x <Base_Download_Dir>/xdctools_setuplinux_3_16_00_18.bin

After making them executable, we can start installing by executing the binaries.

Installing Code Generation Tools

 # <Base_Download_Dir>/ti_cgt_c6000_7.0.1_setup_linux_x86.bin

It is simple afterward as graphical installation wizard starts and you just have to confirm with certain settings and select your installation directory. In my case the installation directory was selected to be 'work/code_gen'.

Installing DSP/BIOS

 # <Base_Download_Dir>/bios_setuplinux_5_41_00_06.bin

It is simple afterward as graphical installation wizard starts and you just have to confirm with certain settings and select your installation directory. In my case the installation directory was selected to be 'work/bios'.

Installing XDC Tools

 # <Base_Download_Dir>/xdctools_setuplinux_3_16_00_18.bin

It is simple afterward as graphical installation wizard starts and you just have to confirm with certain settings and select your installation directory. In my case the installation directory was selected to be 'work/xdctools'.

Continue with DSPLink

After installing all the dependencies, we can now proceed further to install DSP Link. To start with, export the base dsplink path.

 # export DSPLINK /home/jars/Dsp_gsoc/dsplink/dsplink_linux_1_64/dsplink

First, we-need to run DSPLink configuration

 # cd <DSPLink_Base_Dir>/dsplink/config/bin #  perl dsplinkcfg.pl --platform=OMAP3530 --nodsp=1  --dspcfg_0=OMAP3530SHMEM     --dspos_0=DSPBIOS5XX --gppos=OMAPLSP --comps=ponslrmc --DspTskMode=1 Note: We can also give seperate destination for build libraries and executables by providing options '--gpp_temp=<path_of_dir_our_choice> --dsp0_temp=<path_of_dir_of_our_choice>'. But this  can give trouble later when building codec-engine-server examples. The error is shown in the build procedure for codec-engine examples. Successful configuration will give message like this at the end. =========================================================Configuration done successfully!!Generating CURRENTCFG.MK file...Generating multimake script...Generating CFG_system.c File...Generating GPP RTSC xdc file...Generating DSP RTSC xdc file...=========================================================Please edit the following files for toolchains, kernel sources, etc changes.GPP side distribution file: $DSPLINK/make/Linux/omap3530_2.6.mkGPP side distribution file: $DSPLINK/gpp/src/Rules.mkDSP side distribution file: $DSPLINK/make/DspBios/c64xxp_5.xx_linux.mk==========================================================Users consuming DSPLINK as XDC package, Need to do the following.cd into the $(DSPLINK)/dsp directory and run:  $(XDC_INSTALL_DIR)/xdc clean  $(XDC_INSTALL_DIR)/xdc .interfaces cd into the $(DSPLINK)/gpp directory and run:  $(XDC_INSTALL_DIR)/xdc clean  $(XDC_INSTALL_DIR)/xdc .interfaces ==========================================================

As said in the message if you are using DSPLink for XDC package. Execute those four instruction.

Next, we need to edit three make files as shown in the message to provide path of various tools. I will mention only necessary changes to be done on the make files. Rest can be left untouched. Please find the respective line in the make file mentioned below.

1) Find omap3530_2.6.mk in the directory $DSPLINK/make/Linux/ by typing # cd $DSPLINK/make/Linux/. Edit this file using VI or Gedit.

 .......... .......... BASE_BUILDOS    := <Base_OE_Dir>/build/tmp-angstrom_2008_1/sysroots/beagleboard-angstrom-linux-gnueabi/kernel ........... ........... BASE_TOOLCHAIN  := <Base_OE_Dir>/build/tmp-angstrom_2008_1/cross/armv7a ........... ........... OSINC_PLATFORM  := $(BASE_TOOLCHAIN)/lib/gcc/arm-angstrom-linux-gnueabi/4.3.3/include ........... ........... COMPILER        := $(BASE_CGTOOLS)/arm-angstrom-linux-gnueabi-gcc .......... .......... LD              := $(BASE_CGTOOLS)/arm-angstrom-linux-gnueabi-ld .......... .......... CROSS_COMPILE   := arm-angstrom-linux-gnueabi- .......... .......... ARCHIVER        := $(BASE_CGTOOLS)/arm-angstrom-linux-gnueabi-ar ..........  .......... LINKER      := $(BASE_CGTOOLS)/arm-angstrom-linux-gnueabi-gcc ......... ......... 

Don't forget to save the changes at the end.

2) Find Rules.mk in the directory $DSPLINK/gpp/src/ by typing # cd $DSPLINK/gpp/src/. Edit this file using VI or Gedit.

 ......... ......... KERNEL_DIR    := <Base_OE_Dir>/build/tmp-angstrom_2008_1/sysroots/beagleboard-angstrom-linux-gnueabi/kernel ......... ......... TOOL_PATH     := <Base_OE_Dir>/build/tmp-angstrom_2008_1/cross/armv7a/bin ......... ......... CG_PREFIX = arm-angstrom-linux-gnueabi- ......... ......... MAKE_OPTS = ARCH=arm CROSS_COMPILE=$(TOOL_PATH)/arm-angstrom-linux-gnueabi- ......... .........

Again, don't forget to save the changes.

3) Find c64xxp_5.xx_linux.mk in the directory $DSPLINK/make/DspBios/ by typing # cd $DSPLINK/make/DspBios/. Edit this file using VI or Gedit.

 ........... ........... BASE_INSTALL    := <work> ........... ........... BASE_SABIOS     := $(BASE_INSTALL)/bios/bios_5_41_00_06 ........... ........... XDCTOOLS_DIR    := $(BASE_INSTALL)/xdctools_3_16_00_18 ............ ............ BASE_CGTOOLS    := $(BASE_INSTALL)/code_gen ............ ............  

That's all. You are done with editing and its time to make it work. But, before that make sure that you have saved all the changes.

Now, goto $DSPLINK/gpp/src/api/ and execute following commands.

 # cd $DSPLINK/gpp/src/api/ # make -s clean # make -s debug # make -s release Or you can do 'make -s' to build both debug and release version.

Next, goto $DSPLINK/gpp/src/ and execute following commands which builds OMAP3530 loadable module. The module 'dsplinkk.ko' will be save at '$DSPLINK/gpp/export/BIN/Linux/OMAP3530/<RELEASE & DEBUG>/

 # cd $DSPLINK/gpp/src/ # make -s clean # make -s debug # make -s release Or you can do 'make -s' to build both debug and release version.

Next, goto $DSPLINK/gpp/src/samples/ and execute following commands to build GPP side sample examples. The all GPP side executables will be save at '$DSPLINK/gpp/export/BIN/Linux/OMAP3530/<RELEASE & DEBUG>/

 # cd $DSPLINK/gpp/src/samples/ # make -s clean # make -s debug # make -s release Or you can do 'make -s' to build both debug and release version. 

Next, goto $DSPLINK/dsp/src/ and execute following commands to build dsp libraries.

 # cd $DSPLINK/dsp/src/ # make -s clean # make -s debug # make -s release Or you can do 'make -s' to build both debug and release version. 

Next, goto $DSPLINK/dsp/src/samples/ and execute following commands to build dsp side sample examples. Examples will be save at '$DSPLINK/dsp/export/BIN/DspBios/OMAP3530/OMAP3530_0/<RELEASE & DEBUG>/ with .out extension.

 # cd $DSPLINK/dsp/src/ # make -s clean # make -s debug # make -s release Or you can do 'make -s' to build both debug and release version. 

Missing something! LPM??

If everything goes well, you are good to test some sample examples. But before that it is suggested to build LPM modules if you are using DSPLink outside the codec-engine. You need LPM module to power-cycle the DSP while switching between different applications. It is not required to run the LPM for the first time. Before running different application you need to power off & then on the DSP using lpmOFF.x470uC. and lpmONx470uC. If you don't, the DSP does not function properly. LPM package can be downloaded athttp://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/lpm/1_24_02_09/. Save the file 'local_power_manager_linux_1_24_02_09.tar.gz' and untar it to the destination directory.

 # cd <Base_LPM_Dir> # tar -xvzf <Base_Download_Dir>/local_power_manager_linux_1_24_02_09.tar.gz

You need to edit Makefile inside the folder after you do '# cd' as mentioned below before start building the LPM module. I will mention only necessary changes. Rest of the file can be left untouched.

 # cd  <Base_Dir_LPM>/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/modules/omap3530/lpm #gedit Makefile     Note: You can also use vi editer to edit Makefile by typing '#vi Makefile'

Following changes are to be done inside Makefile.

 ................... ................... LINUXKERNEL_INSTALL_DIR = <Base_OE_Dir>/build/tmp-angstrom_2008_1/sysroots/beagleboard-angstrom-linux-gnueabi/kernel MVTOOL_PREFIX = <Base_OE_Dir>/build/tmp-angstrom_2008_1/cross/armv7a/bin/arm-angstrom-linux-gnueabi- DSPLINK_REPO = <work>/dsplink/dsplink_linux_1_64 ................... ...................

Finally the LPM module is ready to build. To build, you need to be in the same directory where the Makefile is.

 # make 

LPM module is now built and you can see it in the same path from where you invoked make command. The binary file needed for LpmOff and LpmOn are provided at

 <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/utils/bin/ti_platforms_evm3530/linux/<debug & release>

Copying Modules and sample application to beagleboard

Now the time has come to test your work. Make a folder called 'dsp' inside '/lib/modules/2.6.32/kernel/drivers/' of your target beagleboard by typing following in your target board command prompt.

 $ mkdir /lib/modules/2.6.32/kernel/drivers/dsp

First copy your dsplinkk.ko and lpm_omap3530.ko modules to your target board. If your board is NFS mount, it is just matter of copying these files from respective path to the<Board_Target_Mount>/lib/modules/2.6.32/kernel/drivers/dsp/. If not, you can copy these in the particular folder mentioned above in your mmc card.

 # cp <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/modules/omap3530/lpm/lpm_omap3530.ko <Board_Target_Dir>/lib/modules/2.6.32/kernel/drivers/dsp/ # cp $DSPLINK/gpp/export/BIN/Linux/OMAP3530/<DEBUG or RELEASE>/dsplinkk.ko <Board_Target_Mount>/lib/modules/2.6.32/kernel/drivers/dsp/

Copy LPM binaries that is already provided for us at <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/utils/bin/ti_platforms_evm3530/linux/ to<Board_Target_Mount>/usr/bin.

 # cp <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/utils/bin/ti_platforms_evm3530/linux/lpmOFF.x470uC <Board_Target_Mount>/usr/bin # cp <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/utils/bin/ti_platforms_evm3530/linux/lpmON.x470uC <Board_Target_Mount>/usr/bin

To make things easy, script to load and unload these recently built modules is already provided to us at<work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/modules/omap3530/. First create a folder in your target beagleboard filesystem where you want to preserve all your work related to DSPLink. Let's name this folder as<Target_work>. Now there is a little editing you need to do in file 'loadmodule.sh' before you copy them. Specify the correct path of your modules by editing the lines in the file loadmodule.sh as hown below.

 #!/bin/sh ........... ........... insmod /lib/modules/2.6.32/kernel/drivers/dsp/dsplinkk.ko ........... ........... insmod /lib/modules/2.6.32/kernel/drivers/dsp/lpm_omap3530.ko

Also, you need to change the first line of unloadmodules.sh

 #!/bin/sh ........... ...........

Now copy these files inside your target work folder in beagleboard.

 # cp <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/modules/omap3530/loadmodules.sh <Board_Target_Mount>/<Target_work>/ cp <work>/lpm/local_power_manager_linux_1_24_02_09/packages/ti/bios/power/modules/omap3530/unloadmodules.sh <Board_Target_Mount>/<Target_work>/

Now copy the sample examples to the board files system. You can copy as many samples as you want to test but I will mention here about only one.

 # cp $DSPLINK/gpp/export/BIN/Linux/OMAP3530/<DEBUG or RELEASE>/loopgpp <Board_Target_Mount>/<Target_work> # cp $DSPLINK/dsp/export/BIN/DspBios/OMAP3530/OMAP3530_0/<DEBUG or RELEASE>/loop.out <Board_Target_Mount>/<Target_work>

Running DSPLink Sample application

Switch to your target platform(Beagleboard) and in the command prompt type following

 $ cd <target_work> $ ./loadmodules.sh $ ./loopgpp loop.out 256 5

That is all will DSPLink. If you did not have any build error in-between you should be able to see output similar to the one shown below. Also, if you want to test some other examples, don't forget to run commands below before you start executing.

 $ lpmOFF.x470uC $ lpmON.x470uC            root@beagleboard:/media/pramod/dsplink# ./loopgpp loop.out 256 5=============== Sample Application : LOOP ============== Executing sample for DSP processor Id 0 ====Entered LOOP_Create ()Leaving LOOP_Create ()Entered LOOP_Execute ()Leaving LOOP_Execute ()Entered LOOP_Delete ()Leaving LOOP_Delete ()====================================================root@beagleboard:/media/pramod/dsplink#      

For more information you can also refer to,

1 http://processors.wiki.ti.com/index.php/Building_DSPLink 2 http://ossie.wireless.vt.edu/trac/wiki/BeagleBoard_DSPLink

Building CMEM module

CMEM module is used to assign continious memroy from the user space.

CMEM package comes along with Codec-Engine and tools. You can find it at <work>/codec_engine_n_tools/codec_engine_2_25_02_11/cetools/packages/ti/sdo/linuxutils/cmem. If you are not using codec-engine then you can download it fromhttp://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/linuxutils/index.html.CMEM comes inside Linux-Utils package.Save it and untar it to your<work> folder.

 # cd <work> # mkdir linux_util # cd linux_util # tar -xvzf <Base_Download_Dir>/linuxutils_2_25_02_08.tar.gz

If using codec-engine

 # cd <work>/codec_engine_n_tools/codec_engine_2_25_02_11/cetools/packages/ti/sdo/linuxutils/cmem/

Else,

 # cd <work>/linux_util/linuxutils_2_25_02_08/packages/ti/sdo/linuxutils/cmem

Now, edit the Rules.make file. The only necessary changes to be done is shown below.

 ........... ........... #If you are using codec-engine un-comment the line below and comment out the line next to it. #EXEC_DIR=<work>/codec_engine_n_tools/codec_engine_2_25_02_11/cetools/packages/ti/sdo/linuxutils/cmem EXEC_DIR=<work>/linux_util/linuxutils_2_25_02_08/packages/ti/sdo/linuxutils/cmem ........... ........... MVTOOL_PREFIX=<OE_Base_Dir>/build/tmp-angstrom_2008_1/cross/armv7a/bin/arm-angstrom-linux-gnueabi- ........... ........... #You need to comment the line below #UCTOOL_PREFIX=/db/toolsrc/library/vendors2005/opensource/buildroot/10122007/build_arm/staging_dir/usr/bin/arm-linux- ........... ........... LINUXKERNEL_INSTALL_DIR=<OE_Base_Dir>/build/tmp-angstrom_2008_1/sysroots/beagleboard-angstrom-linux-gnueabi/kernel ........... ...........

Run the following commands

 # make  # make install

The freshly built module cmemk.ko will be present at the folder <work>/linux_util/linuxutils_2_25_02_08/packages/ti/sdo/linuxutils/cmem/. Copy it to the folder<Board_Target_Mount>/lib/modules/2.6.32/kernel/drivers/dsp/ and test it using following command

 # cp cmemk.ko <Board_Target_Mount>/lib/modules/2.6.32/kernel/drivers/dsp/} # insmod /lib/modules/2.6.32/kernel/drivers/dsp/cmemk.ko pools=1x1000000 phys_start=0x85000000 phys_end=0x86000000

If you see no error message, you have successfully tested it.

Building Codec-Engine and Examples

To start building codec-engine examples you need to edit xdcpaths.mak file found in folder<work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples. The necessary changes is shown below. The xdcpaths.mak file is well commented and modification is very easy.

 ........ ........ DEVICES  := OMAP3530 ....... ....... GPPOS := LINUX_GCC ....... ....... PROGRAMS := APP_CLIENT DSP_SERVER ....... ....... CE_INSTALL_DIR        := <work>/codec_engine_n_tools/codec_engine_2_25_02_11 XDC_INSTALL_DIR       := <work>/xdctools_3_16_00_18 BIOS_INSTALL_DIR      := <work>/bios/bios_5_41_00_06 DSPLINK_INSTALL_DIR   := <work>/dsplink/dsplink_linux_1_64 ....... ....... CGTOOLS_V5T := <OE_Base_Dir>/build/tmp-angstrom_2008_1/cross/armv7a CC_V5T := bin/arm-angstrom-linux-gnueabi-gcc #You can leave the line below as it is in the xdcpaths.mak file. CGTARGET := gnu.targets.arm.GCArmv5T ....... ....... CGTOOLS_C64P := /home/jars/Dsp_gsoc/code_gen ....... .......

Goto <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/codecs/ and type the following commands to build codec examples.

 # cd <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/codecs/ # make clean # make

Goto <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/extensions/ and type the following commands to build extensions examples.

 # cd <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/extensions/ # make clean # make

Goto <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/ and type the following commands to build dsp server examples.

 # cd <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/ # make clean # make

Note: This is the place I had mentioned earlier while configuring DSPLink. If you had given--gpp_temp=<path_of_dir_our_choice> --dsp0_temp=<path_of_dir_of_our_choice> while configuring DSPLink, you may get error similar as shown below. There should be way to way to rectify it, but I did not bother much and rather opted easier path.

 Error while building codec-engine server if you have specified some other destination directory directory while building dsplink.js: "/home/jars/Dsp_gsoc/xdctools_3_16_00_18/packages/xdc/cfg/Main.xs", line 40: XDC runtime error: can't find the library 'export/BIN/DspBios/OMAP3530/OMAP3530_0/RELEASE/dsplink.lib' specified by package dsplink.dsp. It wasn't found along the path '/home/jars/Dsp_gsoc/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/all_codecs/../../../../../..;/home/jars/Dsp_gsoc/codec_engine_n_tools/codec_engine_2_25_02_11/cetools/packages;/home/jars/Dsp_gsoc/codec_engine_n_tools/codec_engine_2_25_02_11/packages;/home/jars/Dsp_gsoc/bios/bios_5_41_00_06/packages;/home/jars/Dsp_gsoc/dsplink/dsplink_linux_1_64;/home/jars/Dsp_gsoc/xdctools_3_16_00_18/packages;../../../../../..;'.gmake[1]: *** [package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c] Error 1gmake[1]: *** Deleting file `package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c'gmake[1]: *** [package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c] Deleting file `package/cfg/bin/ti_platforms_evm3530/all_x64P.xdl'gmake[1]: *** [package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c] Deleting file `package/cfg/bin/ti_platforms_evm3530/all_x64P.h'gmake[1]: *** [package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c] Deleting file `package/cfg/bin/ti_platforms_evm3530/all_x64P.c'gmake[1]: *** [package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c] Deleting file `package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg.cmd'gmake[1]: *** [package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg_c.c] Deleting file `package/cfg/bin/ti_platforms_evm3530/all_x64Pcfg.s62'gmake: *** [/home/jars/Dsp_gsoc/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/all_codecs,.executables] Error 2make[1]: *** [all] Error 2make[1]: Leaving directory `/home/jars/Dsp_gsoc/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/all_codecs'make: *** [all] Error 2

处理这个错误需要更改编译平台选项，把buildutils/platform.xs内的平台更改成目标平台只有3730，其他的注释掉。

var allDevices = new Array();
/*allDevices['DM6446']   = {platform: 'ti.platforms.evmDM6446',   GPP:true,  DSP:'C64P'};
allDevices['DM6467']   = {platform: 'ti.platforms.evmDM6467',   GPP:true,  DSP:'C64P'};
allDevices['DM6467T']   = {platform: 'ti.platforms.evmDM6467T', GPP:true,  DSP:'C64P'};
allDevices['DM6437']   = {platform: 'ti.platforms.evmDM6437',   GPP:false, DSP:'C64P'};
allDevices['DM648']    = {platform: 'ti.platforms.evmDM648',    GPP:false, DSP:'C64P'};
allDevices['DM355']    = {platform: 'ti.platforms.evmDM355',    GPP:true             };
allDevices['DM357']    = {platform: 'ti.platforms.evmDM357',    GPP:true             };
allDevices['DM365']    = {platform: 'ti.platforms.evmDM365',    GPP:true             };*/
allDevices['OMAP3530'] = {platform: 'ti.platforms.evm3530',     GPP:true,  DSP:'C64P'};
/*allDevices['OMAP2530'] = {platform: 'ti.platforms.evm2530',     GPP:true,  DSP:'C64P'};
allDevices['OMAPL137'] = {platform: 'ti.platforms.evmOMAPL137', GPP:true,  DSP:'C674'};
allDevices['OMAPL138'] = {platform: 'ti.platforms.evmOMAPL138', GPP:true,  DSP:'C674'};
allDevices['X86']      = {platform: 'host.platforms.PC',        GPP:true             };*/

examples文件夹内的xdcpaths.mak内的内平台也改成只有3730

DEVICES  := OMAP3530

Goto <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/apps/ and type the following commands to build gpp application.

 # cd <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/apps/ # make clean # make

Done with the building! Its time to test. Goto <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/apps/audio_copy/bin/ti_platforms_evm3530 and copy app_remote.xv5T to your work folder in target board file-system.

 # cd <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/apps/audio_copy/bin/ti_platforms_evm3530/ # cp app_remote.xv5T <Board_Target_Mount>/<Target_work>

Copy the input file in.dat from <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/apps/audio_copy/ to your target directory in your Beagleboard.

 # cp <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/apps/audio_copy/in.dat <Board_Target_Mount>/<Target_work>

Now copy the codec-server from <work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/all_codecs/bin/ti_platforms_evm3530/ to your target directory in beagleboard.

 # cp /home/jars/Dsp_gsoc/codec_engine_n_tools/codec_engine_2_25_02_11/examples/ti/sdo/ce/examples/servers/all_codecs/bin/ti_platforms_evm3530/all.x64P <Board_Target_Mount>/<Target_work>

Befor starting to execute, we need to make sure that all the modules wh have built so far is loaded in Beagleboard. To make this easy, there is loadmodules.sh and unloadmodules.sh script files provided at<work>/codec_engine_n_tools/codec_engine_2_25_02_11/examples/apps/system_files/OMAP3530/. Edit loadmodules.sh to provide the correct path of the respective modules. Copy these files to the target directory in the Beagleboard. Type the following commands to test your examples.

Note: Few things should be noted and take care of before executing the examples. 1) you should pass mem=120 or less for the linux kernel in the u-boot argument. 2) run loadmodules.sh befor us start and confirm all the modules are loaded by '$ lsmod'.You can visually inspect the loaded modules. The necessary modules are dsplinkk.ko, lpm_omap3530.ko and cmemk.ko.

 $ cd <Target_work> $./loadmodules.sh $./app_remote.xv5T 

If everything goes well, you will be able to see following results at your screen.

 @0x000c5a79:[T:0x4001df90] ZZ - main> Welcome to app's main().@0x000c63c5:[T:0x4001df90] ZZ - App-> Application started.@0x000d052e:[T:0x4001df90] ZZ - App-> Processing frame 0...@0x000d067e:[T:0x4001df90] ZZ - App-> Encoder frame 0 process returned - 0x0)@0x000d0753:[T:0x4001df90] ZZ - App-> Decoder frame 0 process returned - 0x0)@0x000d0847:[T:0x4001df90] ZZ - App-> Processing frame 1...@0x000d093b:[T:0x4001df90] ZZ - App-> Encoder frame 1 process returned - 0x0)@0x000d0a11:[T:0x4001df90] ZZ - App-> Decoder frame 1 process returned - 0x0)........................................................................................................................................................@0x0031faf1:[T:0x4001df90] ZZ - App-> Processing frame 127...@0x0031fbe5:[T:0x4001df90] ZZ - App-> Encoder frame 127 process returned - 0x0)@0x0031fcd9:[T:0x4001df90] ZZ - App-> Decoder frame 127 process returned - 0x0)@0x0031fd71:[T:0x4001df90] ZZ - 128 frames encoded/decoded@0x003274a7:[T:0x4001df90] ZZ - app done.root@beagleboard:/media/pramod/dsplink#

编译文件照着下面改

首先要说明的是，那几个文件里要配置的路径其实基本上都在

/home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/codec-engine_2_26_02_11这个目录里的Rules.make文件中。

并且在Rules.make这个文件中也有很详细的说明。

现在来看一下

/home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/codec-engine_2_26_02_11/examples中的xdcpaths.mak

这个文件，这个文件有点重要，因为不光是路径问题，

还配置了你在build的时候的目标板型号，操作系统类型，

以及程序运行在哪个处理器的分配方式（说不太请了，，）。

先从里面的内容看起抛去注释，第一行应该是

DEVICES  := DM6446 DM6467 DM6437 DM355 DM365 OMAP2530 OMAP3530 OMAPL137 OMAPL138 X86

这个是选择你用的处理器的构架，你用哪个处理器就留下哪个，把其他的删掉。

当然你也可以都不删。就是到时候build codec的时候会用很久时间罢了。这里我用OMAPL138

所以删掉其他的之后变成

DEVICES  :=OMAPL138

接着GPPOS := LINUX_GCC LINUX_UCLIBC WINCE

我们arm运行的是linux，所以WINCE可以删掉。而剩下的两个linux，只能留其中的一个。

所以我选择的是LINUX_GCC.

GPPOS := LINUX_GCC

然后是PROGRAMS := APP_CLIENT DSP_SERVER APP_LOCAL

这个注释里写的也很明白

# APP_CLIENT -- ARM client for codecs running on the DSP, on dual-CPU systems
# DSP_SERVER -- DSP server with the codecs, running on the DSP, on dual-CPUs
# APP_LOCAL  -- Client+codecs in a single program, whether ARM only or DSP only

我们用的omapl138，是arm+dsp，而且我想要使用dps运行我的算法，所以我选择了

PROGRAMS := APP_CLIENT  DSP_SERVER

当然，如果要是不想用dsp的话，选择APP_LOCAL也行，不过经过测试，arm运行算法的效率比dsp差太多了。。。

以上配置好了，之后，再往下就是各种路径了。

我就把我配置好的路径贴上来了。

CE_INSTALL_DIR        := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/codec-engine_2_26_02_11     
XDC_INSTALL_DIR       := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/xdctools_3_16_03_36
BIOS_INSTALL_DIR      := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/dspbios_5_41_03_17
DSPLINK_INSTALL_DIR   := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/dsplink_1_65_01_05_eng

这一眼就能看出是什么路径了，，condec engine，XDC工具，BIOS，DSPLINK

经过一段注释之后又是一堆路径

XDAIS_INSTALL_DIR     := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/xdais_6_26_01_03
FC_INSTALL_DIR        := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/framework-components_2_26_00_01
CMEM_INSTALL_DIR      := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/linuxutils_2_26_02_05
WINCEUTILS_INSTALL_DIR:= /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/winceutils_1_01_00_01
BIOSUTILS_INSTALL_DIR := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/biosutils_1_02_02
EDMA3_LLD_INSTALL_DIR := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/edma3lld_01_11_02_05
LPM_INSTALL_DIR       := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/local_power_manager_1_24_02_09

要说明的是，WINCEUTILS_INSTALL_DIR和LPM_INSTALL_DIR这两个路径，

因为我的DVSDK包里是没有wince和lpm的。。所以我就随便写了。因为本身我也用不到wince。。

只要前面配置GPPOS := LINUX_GCC LINUX_UCLIBC WINCE的时候，

没有选择WINCE就不会使用WINCEUTILS_INSTALL_DIR这个路径。

再往下都是编译器的路径了，下面这个是arm交叉编译链。

CGTOOLS_V5T := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/linux-devkit
CC_V5T := bin/arm-arago-linux-gnueabi-gcc
CGTARGET := gnu.targets.arm.GCArmv5T

下面这个依然是交叉编译链，如果在 GPPOS := LINUX_GCC LINUX_UCLIBC WINCE

中选择了LINUX_UCLIBC，就会使用这个，不选择的话就  不会  使用这个路径。

我的包里没有arm-linux-gcc，这也是我一开始选择LINUX_GCC的原因。

CGTOOLS_UCARM9 := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/linux-devkit
CC_UCARM9 := bin/arm-linux-gcc

再往下，看到WINCE了，就直接pass吧。

WINCE_ROOTDIR := C:/WINCE600
WINCE_PROJECTROOT := $(WINCE_ROOTDIR)/_your_ProjectRoot_/Wince600/TI_EVM_3530_ARMV4I

接着是dsp的交叉编译工具，两种核c64p和c674.

CGTOOLS_C64P := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/cgt6x_6_1_14

CGTOOLS_C674 := /home/yr/ti-dvsdk_omapl138-evm_04_03_00_06/cgt6x_6_1_14

最后一个是

CGTOOLS_LINUX86 := /usr

即x86构架下的编译工具，其实就是gcc吧。。。

再往下会有这么一段注释：

 # Most users have no need to modify anything below this line.

我很听话，再往下的的东西我就没去看了。