Hi,
I'm trying to run OMAP3 ISP previewer in oneshot mode, without much success.
My goal is to put a 6MB Bayer10 image (captured on the same OMAP3 EVM)
into RAM, run previewer and get its output in RAM. I use linux-2.6.29 kernel
with ISP driver from omap3camera git tree.
For testing purposes Bayer10 image is stored into a file. My driver
allocates
a 6MB buffer using iommu_vmalloc(), application maps this buffer using
driver's mmap() method, copies input file into a buffer and signals the
driver to
start a previewer. In PREV_DONE interrupt callback the driver wakes
application which stores previewer output from buffer into a file.
The following code runs previewer in oneshot mode (error checking
removed for simplicity)
int isppreview_set_image_size(int width, int height)
{
isp_obj.module.preview_input_height = height;
isp_obj.module.preview_input_width = width;
isp_obj.module.isp_pipeline = OMAP_ISP_PREVIEW;
isppreview_try_size(isp_obj.module.preview_input_width,
isp_obj.module.preview_input_height,
&isp_obj.module.preview_output_width,
&isp_obj.module.preview_output_height);
isppreview_config_inlineoffset(height * 2);
isppreview_config_size(isp_obj.module.preview_input_width,
isp_obj.module.preview_input_height,
isp_obj.module.preview_output_width,
isp_obj.module.preview_output_height);
}
int oneshot(int width, int height)
{
isppreview_request();
isp_set_callback(CBK_PREV_DONE, prev_done_cbk, NULL, NULL);
isppreview_config_datapath(PRV_RAW_MEM, PREVIEW_MEM);
isppreview_set_inaddr(prev_mem_mmu);
isppreview_set_outaddr(prev_mem_mmu);
isppreview_set_image_size(width, height);
isp_enable_interrupts(0);
isppreview_enable(1);
}
The PREV_DONE interrupt arrives, application saves resulting
image into a file, but it contains junk. The input file is known to
be good. The buffer mapping is good as well.
What am I doing wrong ?
Thanks a lot for your help.
Felix.
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