3/22/19, Carl Eugen Hoyos wrote:
> >>>> 2019-03-22 15:50 GMT+01:00, velocit...@gmail.com :
> >>>>> From: Nick Renieris
> >>>>>
> >>>>> Option "-page N" (page index N starts from 1) can now
> >>>>> be u
I haven't, is there a specific place that it's preferred I upload it to?
Στις Πέμ, 28 Μαρ 2019 στις 1:12 μ.μ., ο/η Paul B Mahol
έγραψε:
>
> On 3/28/19, Nick Renieris wrote:
> > Any news on this? Is there something I should do?
>
> Have you uploaded small tiff
When I made the patch I did ask you on IRC whether I should upload
something and got no answer.
Στις Πέμ, 28 Μαρ 2019 στις 2:58 μ.μ., ο/η Nick Renieris
έγραψε:
>
> I haven't, is there a specific place that it's preferred I upload it to?
>
> Στις Πέμ, 28 Μαρ 2019 στις 1:12
Ok, here's a multipage tif with 3 pages, the two first are blue and
the last one red:
https://0x0.st/zKdB.tif
Στις Πέμ, 28 Μαρ 2019 στις 4:35 μ.μ., ο/η Paul B Mahol
έγραψε:
>
> On 3/28/19, Nick Renieris wrote:
> > When I made the patch I did ask you on IRC whether I should upl
Huh? No I fixed that, it's AV_OPT_TYPE_INT now.
See the second email in this list (first was the initial patch, then
the corrected patch).
Στις Παρ, 29 Μαρ 2019 στις 12:51 π.μ., ο/η Paul B Mahol
έγραψε:
>
> On 3/28/19, Nick Renieris wrote:
> > Ok, here's a multipage tif
Στις Παρ, 29 Μαρ 2019 στις 11:05 π.μ., ο/η Paul B Mahol
έγραψε:
> You should also check max number of available pages.
> And issue warning if user requested more than available and than provide some
> page.
Yeah, I _would_ have done that, but the images I've seen don't
actually contain the max nu
Any consensus on using libdng?
Στις Τετ, 20 Μαρ 2019 στις 5:03 μ.μ., ο/η Nick Renieris
έγραψε:
>
> Στις Τετ, 20 Μαρ 2019 στις 4:17 μ.μ., ο/η Paul B Mahol
> έγραψε:
> > DNG I posted should be decodeable by default, without need for extra
> > option(s).
>
> The DNG
I don't mind either way, but I'm writing my GSoC proposal at the
moment and wanted an answer.
If there's no clear answer, is it something TBD that I don't need to
specify in the proposal?
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This was meant to be a reply to
http://ffmpeg.org/pipermail/ffmpeg-devel/2019-May/244744.html
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Do not review, I found some CinemaDNG images that do not work. I will
figure out a better solution.
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Please don't review this yet.
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Some sample working DNGs:
https://0x0.st/z8pf.dng (non-jpeg)
https://www.kenrockwell.com/leica/m9/sample-photos-3.htm (jpeg. these
are decoded as dark because there's no color space conversion
implemented)
A few others work too but I can't find the links to them anymore, I
can upload them if reques
Ready for review.
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I have a small patch for basic gamma correction, it makes the dark
images look much better.
Should I send it here (if so, just as a single email reply to this?)
or wait until this patchset is merged?
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h
Some example DNGs before/after the gamma correction:
https://i.imgur.com/m3Qgrwb.jpg
https://i.imgur.com/XgggT2h.jpg
These are not full size of course, just screenshots.
Colors are wrong and I'm pretty sure I know why, that's TODO.
Στις Τετ, 24 Ιουλ 2019 στις 12:04 μ.μ., ο/η Nic
, 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 έγραψε:
>
> From: Nick Renieris
>
> Used a technique similar to lavc/tdsc.c for invoking the MJPEG decoder.
>
> This commit adds support
Thanks for the review Moritz, pushed fixes.
"outputted" is a word actually :)
https://forum.wordreference.com/threads/is-outputted-a-word.2707379
Στις Πέμ, 25 Ιουλ 2019 στις 4:57 μ.μ., ο/η Moritz Barsnick
έγραψε:
>
> On Thu, Jul 25, 2019 at 15:12:53 +0300, velocit...@gmail.com wrote:
>
> Nit:
>
Στις Παρ, 26 Ιουλ 2019 στις 2:21 π.μ., ο/η Reimar Döffinger
έγραψε:
>
> On 25.07.2019, at 17:35, velocit...@gmail.com wrote:
>
> > +// Lookup table lookup
> > +if (lut)
> > +value = lut[value];
>
> As this function is in the innermost loop, doing the if here instead of
> having 2
Στις Κυρ, 28 Ιουλ 2019 στις 1:30 π.μ., ο/η Reimar Döffinger
έγραψε:
>
> Huh? Are you thinking of templates? always_inline can usually be used the
> same way.
> I haven't looked into the how or anything, it was just a comment in principle.
You're totally right (I checked on godbolt just to make s
's no guarantee this is happening with the actual version of
course (it could be slower, or even faster if it also optimizes it
through dng_blit).
I could check the actual disasm in FFmpeg, but I don't think it's
worth it at this point (my mentor agrees).
Στις Κυρ, 28 Ιουλ 2019 στις
Going to post a new patchset with my latest work. It includes these 2
commits (one slightly modified) and 11 more.
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Thanks for the review Michael, pushing fixes and a commit that makes
some more images compatible.
Στις Πέμ, 8 Αυγ 2019 στις 1:22 π.μ., ο/η Michael Niedermayer
έγραψε:
>
> On Wed, Aug 07, 2019 at 06:27:14PM +0300, velocit...@gmail.com wrote:
> > From: Nick Renieris
> >
>
From: Nick Renieris
Main image data in DNGs is usually comprised of tiles, each of which is a
Huffman-encoded lossless JPEG.
Tested for ljpeg regressions with:
`ffmpeg -f lavfi -i testsrc=d=1 -vcodec ljpeg test.avi`
`ffmpeg test.avi out.avi`
The modified code in ljpeg_decode_rgb_scan runs
From: Nick Renieris
This enables decoding of DNG images generated by the 'DJI Zenmuse X7'
digital camera
Samples: https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 +++
1 file c
From: Nick Renieris
Some JPEGs [1] have incorrect DHT entries that map 2 codes to
the same value.
The second (last) mapping does not ever actually appear in the
code stream, therefore ignoring any mappings after the first one
fixes this.
Without this, an "mjpeg_decode_dc: bad vlc: 0:0&q
From: Nick Renieris
In an image [1], the height was equal to the tile length (full-height
tile) and after `height % tile_length` was applied to them with the
current code, it resulted in the operating tile_length to be 0. This
commit makes this leftover logic only applies if it's nece
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 12
1 file changed, 12 insertions(+)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 174ca168c6..9d20763186 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1038,6 +1038,18 @@ static int
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 42 ++
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 37fda15162..174ca168c6 100644
--- a/libavcodec/tiff.c
+++ b
From: Nick Renieris
Samples:
- Embedded JPEG images in the DNG images here:
https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/mjpegdec.c | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/libavcodec/mjpegdec.c
From: Nick Renieris
Inited to (2^BitsPerSample)-1 as per the DNG Specification
This fixes decoding for "X7 CinemaDNG" samples here:
- https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 13 ++---
1 file changed, 10 insert
From: Nick Renieris
Sample file:
https://drive.google.com/open?id=0B4JyRT3Lth5HVndyOTVOdWktM3J4TFEydTk1MnY3RWlpSzVB
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 21 +
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec
From: Nick Renieris
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 8-bpp ("packed" as dcraw calls it) decoding
- DNG color scaling [1]
- LinearizationTable tag
- Blac
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 34 +++---
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index d5673abb19..a118c37c41 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec
From: Nick Renieris
Also, ensure no false positives when determining DNG bayer images, by
setting them in tiff.c instead of relying on a heuristic. There's no
way to determine this just from the JPEG data, so we have to pass this
information from outside the MJPEG decoder.
Signed-off-by:
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 25 -
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index a118c37c41..4620508d53 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
From: Nick Renieris
DNG samples here can now be decoded:
- https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 73 +++
1 file changed, 42 insertions(+), 31 deletions(-)
diff --git a
> Why do you put all this color space convertion code into the decoders ?
The color space conversion needs to happen, camera sensor data is
linear. If it's not done images looks really dark as result.
> Colorspace and pixel format convertion is generally done outside decoders.
> The specification
7:29:50PM +0300, Nick Renieris wrote:
> > From: Nick Renieris
> >
> > Some JPEGs [1] have incorrect DHT entries that map 2 codes to
> > the same value.
> >
> > The second (last) mapping does not ever actually appear in the
> > code stream, therefore ignoring any ma
The data the marker contains is only 2 bytes and they're 0x in the
samples above. I don't know what they're for.
Στις Σάβ, 10 Αυγ 2019 στις 3:16 μ.μ., ο/η Michael Niedermayer
έγραψε:
>
> On Fri, Aug 09, 2019 at 07:29:57PM +0300, Nick Renieris wrote:
> > From: Nic
first line outside.
3) It depends on mjpeg_decode_dc being called for the first-line case,
I'm not sure how I'd handle that either (even just to take it outside
the "component" loop).
Στις Σάβ, 10 Αυγ 2019 στις 3:30 μ.μ., ο/η Michael Niedermayer
έγραψε:
>
> On Fri, Aug
> after this commit the code dies when used with ffplay with floating point
> exceptions
I tried this on Ubuntu and I can't repro, it works fine.
Maybe something I changed locally fixed it, please re-test on the new
revision I'll send in a bit.
___
ffmpe
From: Nick Renieris
Main image data in DNGs is usually comprised of tiles, each of which is a
Huffman-encoded lossless JPEG.
Tested for ljpeg regressions with:
`ffmpeg -f lavfi -i testsrc=d=1 -vcodec ljpeg test.avi`
`ffmpeg test.avi out.avi`
The modified code in ljpeg_decode_rgb_scan runs
From: Nick Renieris
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 8-bpp ("packed" as dcraw calls it) decoding
- DNG color scaling [1]
- LinearizationTable tag
- Blac
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 34 +++---
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index d5673abb19..a118c37c41 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec
From: Nick Renieris
Some JPEGs [1] have incorrect DHT entries that map 2 codes to
the same value.
The second (last) mapping does not ever actually appear in the
code stream, therefore ignoring any mappings after the first one
fixes this.
Without this, an "mjpeg_decode_dc: bad vlc: 0:0&q
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 25 -
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index a118c37c41..4620508d53 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
From: Nick Renieris
In an image [1], the height was equal to the tile length (full-height
tile) and after `height % tile_length` was applied to them with the
current code, it resulted in the operating tile_length to be 0. This
commit makes this leftover logic only applies if it's nece
From: Nick Renieris
This enables decoding of DNG images generated by the 'DJI Zenmuse X7'
digital camera
Samples: https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 +++
1 file c
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 42 ++
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 37fda15162..174ca168c6 100644
--- a/libavcodec/tiff.c
+++ b
From: Nick Renieris
Also, ensure no false positives when determining DNG bayer images, by
setting them in tiff.c instead of relying on a heuristic. There's no
way to determine this just from the JPEG data, so we have to pass this
information from outside the MJPEG decoder.
Signed-off-by:
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 12
1 file changed, 12 insertions(+)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 174ca168c6..9d20763186 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1038,6 +1038,18 @@ static int
From: Nick Renieris
DNG samples here can now be decoded:
- https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 73 +++
1 file changed, 42 insertions(+), 31 deletions(-)
diff --git a
From: Nick Renieris
Samples:
- Embedded JPEG images in the DNG images here:
https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/mjpegdec.c | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/libavcodec/mjpegdec.c
From: Nick Renieris
Sample file:
https://drive.google.com/open?id=0B4JyRT3Lth5HVndyOTVOdWktM3J4TFEydTk1MnY3RWlpSzVB
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 21 +
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec
From: Nick Renieris
Initialized to `(2 ^ BitsPerSample) - 1` as per the DNG Specification.
Also make sure that `BlackLevel < WhiteLevel`.
This fixes decoding for "X7 CinemaDNG" samples here:
- https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
--
From: Nick Renieris
Main image data in DNGs is usually comprised of tiles, each of which is a
Huffman-encoded lossless JPEG.
Tested for ljpeg regressions with:
`ffmpeg -f lavfi -i testsrc=d=1 -vcodec ljpeg test.avi`
`ffmpeg test.avi out.avi`
The modified code in ljpeg_decode_rgb_scan runs
From: Nick Renieris
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 8-bpp ("packed" as dcraw calls it) decoding
- DNG color scaling [1]
- LinearizationTable tag
- Blac
From: Nick Renieris
In an image [1], the height was equal to the tile length (full-height
tile) and after `height % tile_length` was applied to them with the
current code, it resulted in the operating tile_length to be 0. This
commit makes this leftover logic only applies if it's nece
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 25 -
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index a2102f32b5..040e83ba7c 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 42 ++
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 14928ed3d5..ff9ac30b3f 100644
--- a/libavcodec/tiff.c
+++ b
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 34 +++---
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 4c6b835afe..a2102f32b5 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec
From: Nick Renieris
Also, ensure no false positives when determining DNG bayer images, by
setting them in tiff.c instead of relying on a heuristic. There's no
way to determine this just from the JPEG data, so we have to pass this
information from outside the MJPEG decoder.
Signed-off-by:
From: Nick Renieris
Sample file:
https://drive.google.com/open?id=0B4JyRT3Lth5HVndyOTVOdWktM3J4TFEydTk1MnY3RWlpSzVB
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 21 +
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec
From: Nick Renieris
This enables decoding of DNG images generated by the 'DJI Zenmuse X7'
digital camera
Samples: https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 +++
1 file c
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 12
1 file changed, 12 insertions(+)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index ff9ac30b3f..709bbfb301 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1038,6 +1038,18 @@ static int
From: Nick Renieris
Samples:
- Embedded JPEG images in the DNG images here:
https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/mjpegdec.c | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/libavcodec/mjpegdec.c
From: Nick Renieris
Some JPEGs [1] have incorrect DHT entries that map 2 codes to
the same value.
The second (last) mapping does not ever actually appear in the
code stream, therefore ignoring any mappings after the first one
fixes this.
Without this, an "mjpeg_decode_dc: bad vlc: 0:0&q
From: Nick Renieris
Initialized to `(2 ^ BitsPerSample) - 1` as per the DNG Specification.
Also make sure that `BlackLevel < WhiteLevel`.
This fixes decoding for "X7 CinemaDNG" samples here:
- https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
--
From: Nick Renieris
DNG samples here can now be decoded:
- https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 ---
1 file changed, 37 insertions(+), 24 deletions(-)
diff --git a
In an image [1], the height was equal to the tile length (full-height
tile) and after `height % tile_length` was applied to them with the
current code, it resulted in the operating tile_length to be 0. This
commit makes this leftover logic only applies if it's necessary.
Signed-off-by:
This enables decoding of DNG images generated by the 'DJI Zenmuse X7'
digital camera
Samples: https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 +++
1 file changed, 51 insertions(+), 10
10-bit sample: http://www.rawsamples.ch/raws/phones/RAW_ONEPLUS_ONE-A0001.DNG
14-bit sample:
https://drive.google.com/open?id=0B4JyRT3Lth5HVndyOTVOdWktM3J4TFEydTk1MnY3RWlpSzVB
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 23 +++
1 file changed, 15 insertions(+), 8
Samples:
- Embedded JPEG images in the DNG images here:
https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/mjpegdec.c | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/libavcodec/mjpegdec.c b/libavcodec
Initialized to `(2 ^ BitsPerSample) - 1` as per the DNG Specification.
Also make sure that `BlackLevel < WhiteLevel`.
This fixes decoding for "X7 CinemaDNG" samples here:
- https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcode
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 12
1 file changed, 12 insertions(+)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 1ca9a59dbf..d9750891d4 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1038,6 +1038,18 @@ static int init_image(TiffContext
amples.ch/raws/nikon/SCANNER_NIKON_LS5000.DNG
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 377662c897..3166a3e5c8 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1495,6 +
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 25 -
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index a2102f32b5..dd1295fad6 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -556,6 +556,7 @@ static
Also, ensure no false positives when determining DNG bayer images, by
setting them in tiff.c instead of relying on a heuristic. There's no
way to determine this just from the JPEG data, so we have to pass this
information from outside the MJPEG decoder.
Signed-off-by: Nick Ren
ecified in the DNG Specification - Chapter 5
Signed-off-by: Nick Renieris
---
configure | 1 +
libavcodec/Makefile | 2 +-
libavcodec/tiff.c | 313 +++-
libavcodec/tiff.h | 2 +
4 files changed, 310 insertions(+), 8 deletions(-)
di
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 42 ++
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 257230c386..1ca9a59dbf 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -1780,7
DNG samples here can now be decoded:
- https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 ---
1 file changed, 37 insertions(+), 24 deletions(-)
diff --git a/libavcodec/tiff.c b
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 34 +++---
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 4c6b835afe..a2102f32b5 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
@@ -731,14 +731,23
-off-by: Nick Renieris
---
libavcodec/mjpegdec.c | 52 +--
libavcodec/mjpegdec.h | 1 +
2 files changed, 46 insertions(+), 7 deletions(-)
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index a65bc8df15..6391107f78 100644
--- a/libavcodec
n.
In all known files, the 2 codes are mapped to symbol 0 so only
that case is checked.
---
[1]: Embedded JPEGs in "X7 RAW" and "X7 CinemaDNG" samples here:
https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/jpegtables.c | 17 +++
From: Nick Renieris
"LinearRaw" is a value that the PhotometricInterpretation tag can be set
to on DNG images that contain color information for all channels instead
of being bayer-encoded ("CFA" value).
The DNG decoder is complete enough that we can enable this
From: Nick Renieris
Initialized to `(2 ^ BitsPerSample) - 1` as per the DNG Specification.
Also make sure that `BlackLevel < WhiteLevel`.
This fixes decoding for "X7 CinemaDNG" samples here:
- https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
--
From: Nick Renieris
DNG samples here can now be decoded:
- https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 ---
1 file changed, 37 insertions(+), 24 deletions(-)
diff --git a
From: Nick Renieris
When the height is equal to the tile length (full-height tile)
after `height % tile_length` is applied with the current code,
it results in the operating tile_length to be 0. This commit
makes this leftover logic only applies if it's necessary.
Signed-off-by: Nick Ren
From: Nick Renieris
10-bit sample: http://www.rawsamples.ch/raws/phones/RAW_ONEPLUS_ONE-A0001.DNG
14-bit sample:
https://drive.google.com/open?id=0B4JyRT3Lth5HVndyOTVOdWktM3J4TFEydTk1MnY3RWlpSzVB
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 23 +++
1 file changed
From: Nick Renieris
This fixes "X7 RAW" and "X7 CinemaDNG" samples here:
- https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 12
1 file changed, 12 insertions(+)
diff --git a/libavcodec/tiff.c b/lib
From: Nick Renieris
Main image data in DNGs is usually comprised of tiles, each of which is a
Huffman-encoded lossless JPEG.
Tested for ljpeg regressions with:
`ffmpeg -f lavfi -i testsrc=d=1 -vcodec ljpeg test.avi`
`ffmpeg test.avi out.avi`
The modified code in ljpeg_decode_rgb_scan runs
From: Nick Renieris
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 8-bpp ("packed" as dcraw calls it) decoding
- DNG color scaling [1]
- LinearizationTable tag
- Blac
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 25 -
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index a2102f32b5..dd1295fad6 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec/tiff.c
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 42 ++
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 3bf2b3e557..28b8f42edd 100644
--- a/libavcodec/tiff.c
+++ b
From: Nick Renieris
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 34 +++---
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c
index 4c6b835afe..a2102f32b5 100644
--- a/libavcodec/tiff.c
+++ b/libavcodec
From: Nick Renieris
Some JPEGs [1] have incorrect DHT entries that map 2 codes to
the same value.
The second (last) mapping does not ever actually appear in the
code stream, therefore ignoring any mappings after the first one
fixes this.
Without this, an "mjpeg_decode_dc: bad vlc: 0:0&q
From: Nick Renieris
This enables decoding of DNG images generated by the 'DJI Zenmuse X7'
digital camera
Samples: https://www.dji.com/gr/zenmuse-x7/info#downloads
Signed-off-by: Nick Renieris
---
libavcodec/tiff.c | 61 +++
1 file c
From: Nick Renieris
Also, ensure no false positives when determining DNG bayer images, by
setting them in tiff.c instead of relying on a heuristic. There's no
way to determine this just from the JPEG data, so we have to pass this
information from outside the MJPEG decoder.
Signed-off-by:
From: Nick Renieris
Samples:
- Embedded JPEG images in the DNG images here:
https://www.photographyblog.com/previews/pentax_k1_photos
Signed-off-by: Nick Renieris
---
libavcodec/mjpegdec.c | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/libavcodec/mjpegdec.c
Στις Πέμ, 29 Αυγ 2019 στις 4:00 μ.μ., ο/η Michael Niedermayer
έγραψε:
> This looks unrelated
Messed up when rebasing, will fix in a bit.
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