Its function is analogous to that of the fps filter, so filtering is a
more appropriate place for this.
The main practical reason for this move is that it places the encoding
sync queue right at the boundary between filters and encoders. This will
be important when switching to threaded scheduling, as the sync queue
involves multiple streams and will thus need to do nontrivial
inter-thread synchronization.
In addition to framerate conversion, the closely-related
* encoder timebase selection
* applying the start_time offset
are also moved to filtering.
That field is used by the framerate code to track whether any output has
been generated for the last input frame(*). Its use in the last
invocation of print_report() is meant to account for the very last
filtered frame being dropped in the number of dropped frames printed in
the log. However, that is a highly inappropriate place to do so, as it
makes assumptions about vsync logic in completely unrelated code. Move
the increment to encoder flush instead.
(*) the name is misleading, as the input frame has not yet been dropped
and may still be output in the future
Always use the functionality of the latter, which makes more sense as it
avoids losing keyframes due to vsync code dropping frames.
Deprecate the 'source_no_drop' value, as it is now redundant.
Unlike the 'source' mode, which preserves source keyframe-marking as-is,
the 'source_no_drop' mode attempts to keep track of keyframes dropped by
framerate conversion and mark the next output frame as key in such
cases. However,
* c75be06148 broke this functionality entirely, and made it equivalent
to 'source'
* even before it would only work when the frame immediately following
the dropped keyframe is preserved and not dropped as well
Also, drop a redundant check for 'frame' in setting dropped_keyframe, as
it is redundant with the check on the above line.
ifilter_send_eof() will fail if the input has no real or fallback
parameters, so there is no need to handle the case of some inputs being
in EOF state yet having no parameters.
Since at least commit c954cf1e1b
(adding ff_encode_alloc_frame()), a large part of ff_alloc_picture()
is completely separate for the two callers. Move the caller-specific
parts out to the callers.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is unnecessary in case of user-supplied frames, because
it happens directly after a av_frame_ref() with the same
src and dst.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
ff_alloc_picture() performs two tasks: a) In most instances,
it allocates frame buffers and b) it allocates certain
auxiliary buffers.
The exception to a) is the case when the encoder can reuse
user-supplied frames. And for these frames the auxiliary buffers
are unused, because this frame will never be used as current_picture
(and therefore also not as next_picture or last_picture);
see select_input_picture().
This means that we can simply avoid calling ff_alloc_picture()
with user-supplied frames at all.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
None of the mpegvideo encoders support anything but coded frames;
and if this were to change, it is unclear whether they would need
the adjustment here. So remove it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Only entries 0..max_b_frames are ever used.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
In case "!direct" we are not reusing the input buffers
(due to e.g. insufficient alignment), but allocating
new ones. These of course do not alias with the ones
provided by the user, so these checks are always-false.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
mpegvideo_enc uses a fixed-size array of Pictures; a slot is
considered taken if the Picture's AVFrame is set.
When an error happens after a slot has been taken, this Picture
has typically not been reset and is therefore not usable for
future requests. The code aborts when one runs out of slots
and this can happen in case of allocation failures.
Fix this by always unreferencing a Picture in case of errors.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The custom-allocator logic has been completely defunct since a while,
since nothing depends on those targets, they never get used.
This updates jemalloc to pkg-config, adds the fallback option for
potential arbitrary allocators, and finally actually adds the libraries
to LDFLAGS.
The gather index vector is only used as double-length (due to register
pressure), so no need to initialise it for quad-length. Basically this
matches the multiplier in the prologue to the the multipler in the loop.
There is no need to parse the header twice; doing so does nothing.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
And stop setting picture_number which was only done to not parse
extradata multiple times.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Fixes: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_IO_DEMUXER_fuzzer-6112289464123392
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: -9223372036315799520 - 3873890816 cannot be represented in type 'long'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5009302746431488
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: 65312 * 524296 cannot be represented in type 'int'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_XWMA_fuzzer-6595971445555200
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: 9223372036630775808 + 1000000000 cannot be represented in type 'long'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_WEBM_DASH_MANIFEST_fuzzer-5406131992526848
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: signed integer overflow: 155 + 9223372036854775655 cannot be represented in type 'long'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_W64_fuzzer-5364032278495232
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
