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| author | Leo Izen <leo.izen@gmail.com> | 2022-11-16 06:43:06 -0500 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2022-12-27 10:41:25 -0300 |
| commit | cd9dd0300639689630171893b3dfb6c9ba63a692 (patch) | |
| tree | 6bb3415330e46f9825f685781406f547efad7352 /tests/ref/lavf/gbrpf32le.pfm | |
| parent | 64007595dcb5bb3c5f7bfa74d0b0f2e378f6007e (diff) | |
| download | ffmpeg-cd9dd0300639689630171893b3dfb6c9ba63a692.tar.gz | |
avcodec/pnm: avoid mirroring PFM images vertically
PFM (aka Portable FloatMap) encodes its scanlines from bottom-to-top,
not from top-to-bottom, unlike other NetPBM formats. Without this
patch, FFmpeg ignores this exception and decodes/encodes PFM images
mirrored vertically from their proper orientation.
For reference, see the NetPBM tool pfmtopam, which encodes a .pam
from a .pfm, using the correct orientation (and which FFmpeg reads
correctly). Also compare ffplay to magick display, which shows the
correct orientation as well.
See: http://www.pauldebevec.com/Research/HDR/PFM/ and see:
https://netpbm.sourceforge.net/doc/pfm.html for descriptions of this
image format.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'tests/ref/lavf/gbrpf32le.pfm')
| -rw-r--r-- | tests/ref/lavf/gbrpf32le.pfm | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/ref/lavf/gbrpf32le.pfm b/tests/ref/lavf/gbrpf32le.pfm index b3947a9fcb..fb9f90e883 100644 --- a/tests/ref/lavf/gbrpf32le.pfm +++ b/tests/ref/lavf/gbrpf32le.pfm @@ -1,3 +1,3 @@ -892c5a05e1cbb3d2f7761d51e18b9c4c *tests/data/images/gbrpf32le.pfm/02.gbrpf32le.pfm +887bd04126ce36509578c51e692f3d62 *tests/data/images/gbrpf32le.pfm/02.gbrpf32le.pfm 1216533 tests/data/images/gbrpf32le.pfm/02.gbrpf32le.pfm tests/data/images/gbrpf32le.pfm/%02d.gbrpf32le.pfm CRC=0x95e1053f |