Re: [Openexr-devel] usage of displayWindow produces invalid files

[Peter Hillman]

Seems like you aren't writing enough rows - shouldn't you be writing (height + displayHeightOffset) rows of data in the second case?
Or perhaps you mean to say dataWindow (V2i (0, 0 - displayHeightOffset), V2i (width - 1, height - 1 - displayHeightOffset));

On 18/03/14 08:48, Vincent Olivier wrote:

Hello,

This is probably very trivial, but I can seem to find a solution. This code works:

Header header (width, height);

RgbaOutputFile file(fileName, header, WRITE_RGB);

file.setFrameBuffer(pixels, 1, width);

file.writePixels(height);

This code doesn’t:

float DCI_SCOPE_RATIO = 858.0 / 1080.0;

int displayHeight = round(height * DCI_SCOPE_RATIO);

int displayHeightOffset = (height - displayHeight) / 2;

Box2i dataWindow (V2i (0, 0 - displayHeightOffset), V2i (width - 1, height - 1));

Box2i displayWindow (V2i (0, 0), V2i (width - 1, displayHeight - 1));

Header header (displayWindow, dataWindow);

RgbaOutputFile file(fileName, header, WRITE_RGB);

file.setFrameBuffer(pixels, 1, width);

file.writePixels(height);

It compiles and all, but it writes corrupted OpenEXR files that are unreadable and that exrheader reports as being “incomplete”. Is there an obvious problem somewhere?

Thanks!

Vincent

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