This is more natural, because said context is only used
for the duration of one call to svq1_encode_frame().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The encoder uses ff_svq1_inter_mean_vlc + 256 and setting
hidden visibility allows to bake this "+ 256" into the
general offset of ff_svq1_inter_mean_vlc and the code
accessing it.
For certain arches, this is also required for the compiler
to not produce overtly pessimistic code that can't be fixed
up by the linker lateron.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Currently, SVQ1EncContext is defined in a header that is also
included by the arch-specific code that initializes the one
and only dsp function that this encoder uses directly.
But the arch-specific functions to set this dsp function
do not need anything from SVQ1EncContext. This commit therefore
adds a small SVQ1EncDSPContext whose only member is said
function pointer and renames svq1enc.h to svq1encdsp.h
to avoid exposing unnecessary internals to these init
functions (and the whole mpegvideo with it).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Bayer sources are read in groups of 2 lines (e.g. for a
BGGR flavor, the first row contains only B and G samples,
while the second row contains only G and R samples). They
need to be read as a whole.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This fixes a regression from commit 36117968ad.
wrapped_url_read() used to be able to return positive number from
ffurl_read(). It relies on the result to check if EOF is reached in
async_buffer_task().
But FIFO callbacks must return 0 on success. This should be handled
in ring_write() instead.
Test case:
ffmpeg -f lavfi -i testsrc -t 1 test.mp4
ffmpeg -i async:test.mp4
Signed-off-by: Guangyu Sun <gsun@roblox.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This simplifies the code as there is no other place the error buffer
is needed, so the av_err2str helper macro can be used.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
av_err2str which is a wrapper for av_strerror already calls
strerror_r if available and if not has a fallback for the other
error codes that would be handled by that, so manually calling
strerror again if it fails is not necessary.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
av_err2str which is a wrapper for av_strerror already calls
strerror_r if available and if not has a fallback for the other
error codes that would be handled by that, so manually calling
strerror again if it fails is not necessary.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This filter currently keeps the input timebase, but produces CFR output.
It is thus simpler to use 1/output fps as the output timebase.
Also, set output frame durations.
Currently it would essentially change the find_stream_info setting for
the file it was specified for and all following files, which is unusual
and somewhat unexpected behaviour for a per-file option and not even
documented to behave like this.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
VSETVLI xd, x0, ...' has rather nonobvious semantics:
- If xd is x0, then it preserves the current vector length.
- If xd is not x0, it sets the vector length to the supported maximum.
Also somewhat confusingly, while VMV.X.S always does its thing
regardless of the selected vector length, VMV.S.X does _nothing_ if the
selected vector length is zero.
So the current code breaks fails to initialise the accumulator if we
are unlucky to have a selected vector length of zero on entry. Fix it
by forcing the vector length to one.
The binkaudio decoders don't need mdct or sinewin at all;
and binkaudio_dct doesn't need rdft directly (but nevertheless
uses it indirectly via dct).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
