Hey Chris,
How did that actually work for you? When I try to run the same thing my
call to _control fails with the error "could not set PARAMS: 0x10c000".
I also was reading through the jpeg codec engine users guide (sprufe5c)
and it makes no mention of resizing dynParams (although their example
doesn't work for me either). Resizing dynParams using the addition of
the two sizes seems fundamentally wrong since IJPEGENC_DynamicParams
contains an IMGENC1_DynamicParams member which would already make the
size of extDynParams correct wouldn't it?
My confusion is rising...
I've attached my code is below, any ideas?
IMGENC1_DynamicParams dynParams;
IJPEGENC_DynamicParams extDynParams;
---- snip creating the engine ----
/* set the parameters for encoding */
dynParams.size = sizeof(IMGENC1_DynamicParams) +
sizeof(IJPEGENC_DynamicParams);
dynParams.numAU = XDM_DEFAULT;
dynParams.inputChromaFormat = CHROMAFORMAT;
dynParams.inputHeight = height;
dynParams.inputWidth = width;
dynParams.captureWidth = width;
dynParams.generateHeader = XDM_ENCODE_AU;
dynParams.qValue = QVALUE;
/* set the extended dynamic parameters */
extDynParams.imgencDynamicParams = dynParams;
extDynParams.rstInterval = XDM_DEFAULT;
extDynParams.disableEOI = XDM_DEFAULT;
extDynParams.rotation = 180;
extDynParams.customQ = NULL;
imgStatus.size = sizeof(imgStatus);
if
(IMGENC1_control(hVidEncode,XDM_SETPARAMS,(IMGENC1_DynamicParams*)&extDynParams,
(IMGENC1_Status*)&imgStatus) == XDM_EFAIL) {
fprintf(stderr, "%s: error: could not set PARAMS: 0x%x\n", "jpeg
encoder",
imgStatus.extendedError);
return FAILURE;
}
Chris Stillson wrote:
Hey Jeff,
I just got this working. I think what you forgot to do was
dynParams.size = sizeof(IMGENC1_DynamicParams) +
sizeof(IJPEGENC_DynamicParams);
It's the size change that cues the library that extended data is present.
good luck
Chris
On Wed, Jun 18, 2008 at 1:55 PM, Jeff Cooper <[EMAIL PROTECTED]> wrote:
I'm trying to use the JPEG codec to rotate an image but I'm not having any
luck with it and was wondering if anyone else has done it.
I'm setting up my dynamic parameters as follows:
IMGENC1_DynamicParams dynParams;
IJPEGENC_DynamicParams extDynParams;
/* set the parameters for encoding */
dynParams.size = sizeof(IMGENC1_DynamicParams);
dynParams.numAU = XDM_DEFAULT;
dynParams.inputChromaFormat = CHROMAFORMAT;
dynParams.inputHeight = VID_HEIGHT;
dynParams.inputWidth = VID_WIDTH;
dynParams.captureWidth = VID_WIDTH;
dynParams.generateHeader = XDM_ENCODE_AU;
dynParams.qValue = QVALUE;
/* set the extended parameters for encoding */
extDynParams.imgencDynamicParams = dynParams;
dynParams.size = sizeof(IJPEGENC_DynamicParams);
extDynParams.rstInterval = XDM_DEFAULT;
extDynParams.disableEOI = XDM_DEFAULT;
extDynParams.rotation = 180;
extDynParams.customQ = NULL;
Then I call:
imgStatus.size = sizeof(imgStatus);
if (IMGENC1_control(m_Private->enc, XDM_SETPARAMS, (IMGENC1_DynamicParams
*)&extDynParams, &imgStatus) ==
XDM_EFAIL) {
ERROR("Could not set PARAMS."
<< hparam("Error", imgStatus.extendedError));
return;
}
I don't have any warning when I compile and I don't get any runtime errors,
but my image doesn't rotate.
Does anyone see anything obvious that I'm doing wrong?
thanks,
Jeff
--
Jeff Cooper // senior embedded software engineer
LOGIC // engineering design services
411 Washington Ave. N. Suite 400
Minneapolis, MN 55401
T // 612.436.5176
F // 612.672.9489
[EMAIL PROTECTED]
www.logicpd.com
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