All the work previously has been more or less leading up to supporting
this function. The line op function will open a file and execute a
function pointer on each line of the file opened to modify the frame
buffer.
It now figures out the file type from the file extension. If no file
extension is given it just saves the file as BMP if its not a JPEG image
or JPEG if it's a JPEG image. If you specify an extension and the file is
not of that type then it will give you an error.
The new test_save.py should run until you reach the JPEG image part
where it quits due to lack of JPEG support natively on OV7725 boards.
Maybe JPEG mode should be supoorted by just compressing pictures?
There's not a lot of actual functionality changes from the last commit.
However, switching the basic wrapper library to just long_jump on
failure and moving all the state info to structs required changes to all
the base functions in the last commit. The rest of the changes are to
link in the new functionality and to get the code to compile (usbdbg.c
edits).
Next I'll work on a function which abstracts the problem of opening an
image up and executing a line by line function op on it. I already
worked the code out for that. But, it's not in this commit to keep
things streamlined.
* With the new integral moving window we can support face detection,
keypoints and template matching on QVGA frames. However, it was only
implemented and tested for face detection.
* Increasing the max integral frame now for easier testing.
Fimrware will now automatically detect the appropriate file type and read
in that file type correctly.
Working on tying on of this stuff togheter next. It's getting a little
bit too complicated to deal with error cases. Need to add error message
function layer.
RGB565 reading and writing is going to be slow. But, grayscale is going
to be going as fast as the system can go.
If Omnivision has just reversed the byte order of data sent to the
camera we wouldn't have this problem for RGB565.