[FFmpeg-devel] [PATCH] libopenjpegdec: add pix fmt gbrp (9-14 bit)

[Michael Bradshaw]

On Wed, Jan 23, 2013 at 11:01 PM, Michaël Cinquin <mc at michaelcinquin.com>wrote:

> On 23 janv. 2013, at 22:05, Michael Bradshaw wrote:
>
> > On Wed, Jan 23, 2013 at 2:05 PM, Michael Bradshaw <mjbshaw at gmail.com>
> wrote:
> >
> >> Added support for decoding gbrp (9-14 bit) images. I didn't add 8 and 16
> >> bit because these should just be decoded as RGB 8 and 16 bit.
> >>
> >> Note that this hasn't been tested. I don't have any samples, and I can't
> >> figure out how to get image_to_j2k to output 9-14 bit rgb samples (and I
> >> couldn't generate any with FFmpeg since there's no rgb48 -> gbr
> converter).
>
> Here is a j2c in xyz colorspace :
> www.michaelcinquin.com/get/12bpc_xyz.j2c
> , and another j2c in rgb colorspace, both of them 12 bpc.
> www.michaelcinquin.com/get/12bpc_rgb.j2c


Thanks for the samples!

To devs: this patch may not even be needed, actually (and after testing, it
doesn't even work anyway). It looks like rgb48 pix fmt is selected and
avctx->bits_per_raw_sample is properly set to 12 bpc (tested with the
12bpc_rgb.j2c sample).

Thanks,

Michael