Vincent,
Thanks for your help. I have another question I wanted to ask you or anyone
else who can help.
Let's say I want to typecast the input buffer to my dec codec as this:
// message format
struct MyMessage
{
unsigned char data1;
unsigned short data2;
unsigned int data3;
unsigned int data4;
unsigned char buf[105];
} __attribute__ ((packed));
In my ARM application, I allocated the input buffer from the CMEMK pool like
this:
inBuf = (XDAS_Int8 *)Memory_contigAlloc(sizeof(struct MyMessage),
Memory_DEFAULTALIGNMENT);
and set ((struct MyMessage *)inBuf)->buf with some values. When I called
SPHENC_process with
that buffer, my vendor specific function "MYDEC_TI_process" in my dec codec
doesn't see the
same values in (struct MyMessage *)inBufs->bufs[0])->buf:
XDAS_Int32 MYDEC_TI_process(ISPHDEC_Handle h, XDM_BufDesc *inBufs,
XDM_BufDesc *outBufs, ISPHDEC_InArgs
*inArgs, ISPHDEC_OutArgs *outArgs)
{
// do processing on ((struct AudioMessage *)inBufs->bufs[0])->buf;
return (ISPHDEC_EOK);
}
Is there a memory alignment, typecasting, or indianess issue? Also, I had to
comment out the
__attribute__ ((packed)) or else the DSP compiler won't compile correctly.
Please advise. Thanks!
Regards,
Andy
----- Original Message ----
From: "Wan, Vincent" <[EMAIL PROTECTED]>
To: Andy Ngo <[EMAIL PROTECTED]>
Cc: davinci-linux-open-source <[email protected]>
Sent: Friday, January 26, 2007 5:21:05 PM
Subject: RE: Linking/mapping data to IRAM or L1SDRAM on the DSP
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Hi Andy,
You can try this:
In package.bld, set the lopts (linker
options) in the addExecutable call:
….
if (targ.os == "Linux") {
libraries = "-lm";
}
else {
libraries = "";
}
Pkg.addExecutable(name,
targ, plat, {
cfgScript: cfg,
lopts: libraries,
….
Fyi, there is also something called copts
that allows you to set compiler flags.
Alternatively, if you are more comfortable
with makefiles, you can take a look at the video_copy/dualcpu example to see
how you can directly specify –lm, etc. next to the rule for app.out,
where –lphread is specified.
Best regards,
Vincent
From: Andy Ngo
[mailto:[EMAIL PROTECTED]
Sent: Thursday, January 25, 2007
2:16 PM
To: Wan, Vincent
Cc: davinci-linux-open-source
Subject: Re: Linking/mapping data
to IRAM or L1SDRAM on the DSP
Hi Vincent,
Thanks
for you help. I have another question that maybe you can help. I
want to add
a
library (i.e. mylib.a) to the ARM application but I couldn't figure it
out. I know I need
to
modify the package.bld file. For example, in the
dvevm_1_10/codec_engine_1_02/examples/apps/speech_copy folder, I see all the
source
files are added in package.bld via Pkg.addobjects). How do I add my
library
and
other system libraries (like -lm -lc -ldl -rt). Otherwise, I have to
manually modify
the
package.mak that automatically gets generated (my changes get wiped out if I
modify
package.bld again).
Thanks!
Regards,
Andy
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