Before, drawtext filter deliberately altered given text coordinates if
text didn't fully fit on the picture. This breaks the use case of
scrolling large text, e.g. movie closing credits.
Add 'fix_bounds', to make it usable in such cases (by setting its value to 0).
Default behavior is not changed, and non-fitting text coords are fixed.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
The code in the file is written by vitor in be19d752 (2008)
thus cannot have originated in libav which did not exist at that
time
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Sometimes the scan finds nothing that qualifies for addition to
the array and pos is zero after the loops. The code forces pos to
1 and the array is then processed as if it had one valid element in it,
producing some amusing but not very useful results.
I don't see the rationale for this. If pos is zero coming out of the
loops, the only appropriate thing to do is set t->angle to zero. The
attached patch does that. It's worked properly in several tests so far.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Variable totalangles was created and assigned, but never used.
Signed-off-by: Ray Simard <rhs.ffmpeg@sylvan-glade.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
Initialize Transform structs t and orig to zero.
Signed-off-by: Ray Simard <rhs.ffmpeg@sylvan-glade.com>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
Using the double variant causes several pointless conversions between
double and int.
Worse, one of the conversions is in an inner loop together with a
function using MMX, resulting in undefined behaviour.
Based on debugging by Ray Simard.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Tested-by: Ray Simard <rhs.ffmpeg@sylvan-glade.com>