The latest patch is unrelated to the gamma stuff (which in hindsight
isn't accurately implemented, so never mind), it has a regression fix
for z8pf.dng and adds compatibility to the following:
https://www.camerafv5.com/pages/raw-samples.php
https://www.camerafv5.com/pages/nexus6-raw-samples.php
https://www.chris-juettner.de/projekte/raw-samples-comparison-download/dji-mavic-air
etc
>Do you plan to implement camera native RGB to CIE XYZ mapping as specified
in DNG Spec 1.4.0.0 Chapter 6 ?
Perhaps. I haven't looked at it much but it may be too much work for
the time I have left, I will talk with my mentor on whether to
prioritize it (a lot of images look fine without it).
Στις Τετ, 24 Ιουλ 2019 στις 1:06 μ.μ., ο/η <velocit...@gmail.com> έγραψε:
>
> From: Nick Renieris <velocit...@gmail.com>
>
> Used a technique similar to lavc/tdsc.c for invoking the MJPEG decoder.
>
> This commit adds support for:
> - DNG tiles
> - DNG tile huffman lossless JPEG decoding
> - DNG color scaling [1]
> - LinearizationTable tag
> - BlackLevel tag
>
> [1]: As specified in the DNG Specification - Chapter 5
>
> Signed-off-by: Nick Renieris <velocit...@gmail.com>
> ---
> libavcodec/tiff.c | 16 ----------------
> 1 file changed, 16 deletions(-)
>
> diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
> index 423eaf0647..4f6ba256c6 100644
> --- a/libavcodec/tiff.c
> +++ b/libavcodec/tiff.c
> @@ -280,19 +280,6 @@ static void av_always_inline horizontal_fill(TiffContext
> *s,
> int usePtr, const uint8_t *src,
> uint8_t c, int width, int
> offset)
> {
> - /* Handle DNG images with uncompressed strips (non-tiled) */
> - if (s->tiff_type == TIFF_TYPE_DNG || s->tiff_type ==
> TIFF_TYPE_CINEMADNG) {
> - dng_blit(s,
> - dst + offset,
> - width,
> - src,
> - width,
> - width,
> - 1,
> - 0);
> - return;
> - }
> -
> switch (bpp) {
> case 1:
> while (--width >= 0) {
> @@ -1799,9 +1786,6 @@ again:
> } else if (s->is_tiled) {
> av_log(avctx, AV_LOG_ERROR, "DNG uncompressed tiled images are
> not supported\n");
> return AVERROR_PATCHWELCOME;
> - } else if (s->bpp != 8) {
> - av_log(avctx, AV_LOG_ERROR, "DNG uncompressed non-tiled non-8bpp
> images are not supported\n");
> - return AVERROR_PATCHWELCOME;
> }
> }
>
> --
> 2.21.0.windows.1
>
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