[FFmpeg-devel] [PATCH] Add a gamma flag to exr loader to avoid banding

[Carl Eugen Hoyos]

Gonzalo Garramuno <ggarra13 <at> gmail.com> writes:

> I am puzzled how you get such a high checksum. Over 
> here all fate tests pass with my checksum.

I get this output on Linux with different gcc 
compilers for both ia32 and x64:

$ make -k SAMPLES=fate-suite/ fate-exr
TEST    exr-slice-raw
--- ./tests/ref/fate/exr-slice-raw      2014-05-01 22:07:04.915299853 +0200
+++ tests/data/fate/exr-slice-raw       2014-05-01 22:14:35.182290889 +0200
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,  3169800, 0x6a356d0d
+0,          0,          0,        1,  3169800, 0x1f656d7a
Test exr-slice-raw failed. Look at tests/data/fate/exr-slice-raw.err for
details.
make: *** [fate-exr-slice-raw] Error 1
TEST    exr-slice-rle
--- ./tests/ref/fate/exr-slice-rle      2014-05-01 22:07:04.915299853 +0200
+++ tests/data/fate/exr-slice-rle       2014-05-01 22:14:35.234290304 +0200
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,  3169800, 0x6a356d0d
+0,          0,          0,        1,  3169800, 0x1f656d7a
Test exr-slice-rle failed. Look at tests/data/fate/exr-slice-rle.err for
details.
make: *** [fate-exr-slice-rle] Error 1
TEST    exr-slice-zip1
--- ./tests/ref/fate/exr-slice-zip1     2014-05-01 22:07:04.915299853 +0200
+++ tests/data/fate/exr-slice-zip1      2014-05-01 22:14:35.320289336 +0200
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,  3169800, 0x6a356d0d
+0,          0,          0,        1,  3169800, 0x1f656d7a
Test exr-slice-zip1 failed. Look at tests/data/fate/exr-slice-zip1.err for
details.
make: *** [fate-exr-slice-zip1] Error 1
TEST    exr-slice-zip16
--- ./tests/ref/fate/exr-slice-zip16    2014-05-01 22:07:04.915299853 +0200
+++ tests/data/fate/exr-slice-zip16     2014-05-01 22:14:35.400288436 +0200
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,  3169800, 0x6a356d0d
+0,          0,          0,        1,  3169800, 0x1f656d7a
Test exr-slice-zip16 failed. Look at tests/data/fate/exr-slice-zip16.err for
details.
make: *** [fate-exr-slice-zip16] Error 1
TEST    exr-slice-pxr24
make: Target `fate-exr' not remade because of errors.

> Does the image you get looks okay

Yes.

Carl Eugen