Refactor the image allocation code, and expose part of it as helper
code. This aims towards allowing callers to easily allocate mp_image
references from custom-allocated linear buffers. This is exposing only
as much as what should be actually required.
Remove the feature of adding read-only frames to mp_image_pool_add().
This makes no sense, because an image pool is an allocator, and must
always return writable images. Also check these assumptions earlier.
In addition to using the new VAO mechanism introduced in the previous
commit, this tries to keep the OSD code self-contained. This doesn't
work all too well (because of the pass and CMS stuff), but it's still
better than before.
This removes VAO handling from video.c. Instead the shader cache will
create the VAO as needed. The consequence is that this creates a VAO
per shader, which might be a bit wasteful, but doesn't matter anyway.
Reduce this to 1 draw call per OSD pass. This removes the need for some
annoying special handling regarding 3D video support (we supported
duplicating the OSD/subtitles for side-by-side 3D output etc.).
Remove the unneeded texture sampler uniform thing.
Remove this code because it could be argued that it contains GPL-only
code (see commit 642e963c86 for details).
The remaining aspect methods appear to work just as well, are
potentially more compatible to other players, and the code becomes much
simpler.
These are apparently expensive on some drivers which are not smart
enough to turn x/42 into x*1.0/42. So, do it for them.
My great test framework says it's okay
Performance seems pretty much unchanged but I no longer get nasty spikes
on NUMA systems, probably because glBufferSubData runs in the driver or
something.
As a simplification of the code, we also just size the PBO to always
have the full size, even for cropped textures. This seems slower but not
by relevant amounts, and only affects e.g. --vf=crop. It also slightly
increases VRAM usage for textures with big strides.
This new code path is especially nice because it no longer depends on
GL_ARB_map_buffer_range, and no longer uses any functions that can
possibly fail, thus simplifying control flow and seemingly deprecating
the manpage's claim about possible image corruption.
In theory we could also reduce NUM_PBO_BUFFERS since it doesn't seem
like we're streaming uploads anyway, but leave it in there just in
case some drivers disagree...
This API isn't deprecated (yet?), but it's still inferior and harder to
use than avcodec_free_context().
Leave the call only in 1 case in af_lavcac3enc.c, where we apparently
seriously close and reopen the encoder for whatever reason.
STREAM is better than DYNAMIC because we're only using it once per
frame. As for COPY vs DRAW, that was pretty much incorrect to begin with
- but surprisngly, COPY is actually faster (sometimes significantly so,
e.g. on my NUMA system).
After testing, the best I can gather is that it has to do with the fact
that COPY requires fewer redundant memcpy()s, and also 3x reduce RAM
bandwidth (in theory).
Anyway, that bit shouldn't introduce any regressions, it's just a
documentation update. Maybe I'll change my mind about the comment again
the future, it's really hard to tell. Vulkan, please save us!
Instead of allocating three PBOs and cycling through them, we allocate
one PBO that's three times as large, and cycle through the subregion
offsets.
This results in arguably simpler code and faster initialization
performance. Especially for 4K textures, initializing PBOs can take
quite some time (e.g. 180ms -> 110ms). For 1080p, it's more like 66ms ->
52ms for me.
The alignment to 4096 is completely unnecessary by spec, but we do it
anyway just for peace of mind.
This is unnecessary to call from gl_video_resize, because the hooks only
(possibly) change when the actual vo_opengl options change. This used to
be required back when mpv still had prescaling built in, but since that
was all moved to user shaders and the code removed, this is a left-over
artifact.
The renderer code doesn't list a fixed set of supported formats, but
supports anything that is described by AVPixFmtDescriptor and follows a
number of constraints.
Plane order is not included in those constraints. This means the planes
could be in random order, rather than what the vo_opengl renderer
happens to assume. For example, it assumes that the 4th plane is alpha,
even though alpha could be on any plane. Likewise it assumes that plane
0 was always luma, and planes 2/3 chroma. (In earlier iterations of
format support, this was guaranteed by MP_IMGFLAG_YUV_P, but this is not
used anymore.)
Explicitly set the plane semantics (enum plane_type) by the component
descriptors and the used colorspace. The behavior should mostly not
change, but it's less likely to break when FFmpeg adds new pixel
formats.
With some newer ANGLE builds, mapping can fail with "Failed to create
EGL surface" during playback. The reason is unknown, and it might just
be an ANGLE bug. Probe whether it works at init time to avoid the
problem.
Commit d5702d3b95 messed up the order of destruction of the elements: it
destroyed the avctx before the hwaccel uninit, even though the hwaccel
uninit could access avctx. This could happen with some old hwaccels
only, such as D3D ones before the new libavcodec hwaccel API.
Fix this by making use of the fact that avcodec_flush_buffers() will
uninit the underlying hwaccel. Thus we can be sure avctx is not using
any hwaccel objects anymore, and it's safe to uninit the hwaccel.
Move the hwdec_dev dstruction code with it, because otherwise we would
in theory potentially create some dangling pointers in avctx.
In commit 6eb0bbe this was changed from xs[n] to use gl_format.chroma_w
indiscriminately, which broke chroma rendering when zooming/cropping.
The solution is to only use chroma_w for chroma planes.
Fixes#4592.
On optional hook points, we store to a temp FBO and then read from it
again to complete any operations that may still be left (e.g.
sigmoidization after MAIN/LINEAR).
In theory this mechanism should be reworked to avoid the temporary FBO
until the next time we actually need one - and also skip redundant
passes if we the next thing we need *is* a FBO - but both are those are
tricky. Anyway, in the meantime, at least we can label the
(semi-)redundant passes that get generated when using user shaders.
This just indicates a fixed linear coefficient to multiply into the
signal, similar to the old option --target-brightness (but the inverse
thereof). Good for testing purposes, which is why I added it. (This also
corresponds somewhat to what zimg does)
It's now possible to request non-dumb mode as a user, even when not
using any non-dumb features. This change is mostly intended for testing,
so I can easily switch between dumb and non-dumb mode on default
settings. The default behavior is unaffected.
This backend is selected if vaapi is available, but vaapi-over-EGL is
not. This causes various issues around the forced RGB conversion, which
is done with fixed, usually incorrect parameters.
It seems the existing auto probing check is too weak, and doesn't really
prevent it from getting loaded. Fix this by adding a flag to not ever
load this during auto probing.
I'm still not deleting it, because it's useful for testing on nvidia
machines.
See #4555.
The current algorithm blew up when the color was negative, such as the
case when downscaling with dscale=mitchell or other algorithms that
introduce negative ringing. The simplest solution is to just slightly
change the calculation to force both parameters to be in-range.
This is exposed so that bjin/mpv-prescalers can use textureGatherOffset
for performance.
Since there are now quite a lot of parameters where it isn't quite clear
why they're all defined, add a paragraph to the man page that explains
them a bit.
This helps prevent unnaturally, weirdly colorized blown out highlights
for direct images of the sunlit sky and other way-too-bright HDR
content. I was debating whether to set the default at 1.0 or 2.0, but
went with the more conservative option that preserves more detail/color.
This logic doesn't really make sense. copy_img_tex already binds the
texture, so why would we bind it a second time? Furthermore, nothing
actually uses this return value. Must have been some left-over artifact
of a previous iteration of this function. Anyway, it's harmless, just
nonsensical. So remove it.
This is more efficient on my machine (nvidia), but only when applied to
groups of exactly 4 texels. So we switch to the more efficient
textureGather for groups of 4. Some notes:
- textureGatherOffset seems to be faster than textureGather by a
non-negligible amount, but for some reason, textureOffset is still
slower than a straight-up texture
- textureGather* requires GLSL 400; and at least on nvidia, this
requires actually allocating a GL 4.0 context.
- the code in opengl/common.c that clamped the GLSL version to 330 is
deprecated, because the old user shader style has been removed
completely in the meantime
- To combat the growing complexity of the polar sampling code, we drop
the antiringing functionality from EWA shaders completely, since it
never really worked well for EWA to begin with. (Horrific artifacting)
Instead of PostMessage, use SendNotifyMessage from the SendMessage
family of functions to wake up the Win32 thread from the VO thread. When
a message is sent rather than posted between threads, it ends up in a
different queue which is processed before posted messages and can be
processed in more places. This prevents a playback glitch when clicking
on the titlebar, but not moving the window. With PostMessage-based
wakeups, VOCTRLs could be delayed for up to 500ms after the user clicks
on the titlebar, but with SendNotifyMessage, they still complete in
under a millisecond.
Also, instead of handling WM_USER, process the dispatch queue before
every message. This ensures the dispatch queue is processed as soon as
possible. WM_NULL is used to wake up the window procedure in case there
are no other messages being processed.
This sets AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH, which some hwaccels
using the new generic API respect. These do profile selection in
libavcodec, so it can be controlled only with an external flag, instead
of in mpv code like it used to be done.
They have been deprecated for a decade, yet you're forced to explicitly
deal with them at every step, or they will break your shit.
FFmpeg insists on keeping them, because libavfilter is too stupid to
deal with color ranges properly. Ridiculous.
- change asserts to silent exits
- check all pointers before use
- move the p->pass initialization code to the right place
This should hopefully cut down on the amount of crashing by making the
code fundamentally more robust, while also fixing a concrete issue where
opengl-cb failed to initialize p->pass.
This seems to reduce glitches when resizing a --wid program (or it could
be a placebo.) Since we don't need the WM_WINDOWPOSCHANGING handler in
--wid mode, it should be fine.
This allows filter functions to be prematurely cut off once their
contributions start becoming insignificant. This effectively prevents
wasted GPU time sampling from parts of the function that are essentially
reduced to zero by the window function, providing anywhere from a 10% to
20% speedup. (5700μs -> 4700μs for me)
Now it's sourced from the etc/ PNG files directly, instead of
preprocessing them with imagemagick.
Add some ad-hoc code to decode PNG files with libavcodec. At least we
can drop the zlib code in exchange.
wm4
Niklas Haas
Aman Gupta
James Ross-Gowan
Xu Zhao