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Commit Graph

22 Commits

Author SHA1 Message Date
wm4
2a9534871d command: add property returning detected hwdec API
This is somewhat imperfect, because detection of hw decoding APIs is
mostly done on demand, and often avoided if not necessary. (For example,
we know very well that there are no hw decoders for certain codecs.)

This also requires every hwdec backend to identify itself (see hwdec.h
changes).
2015-02-02 22:43:13 +01:00
wm4
74581a6106 video: handle hwdec screenshots differently
Instead of converting the hw surface to an image in the VO, provide a
generic way to convet hw surfaces, and use this in the screenshot code.

It's all relatively straightforward, except vdpau is being terrible. It
needs a huge chunk of new code, because copying back is not simple.
2015-01-22 18:18:23 +01:00
wm4
aae9af348e video: have a generic context struct for hwdec backends
Before this commit, each hw backend had their own specific struct types
for context, and some, like VDA, had none at all. Add a context struct
(mp_hwdec_ctx) that provides a somewhat generic way to pass the hwdec
context around. Some things get slightly better, some slightly more
verbose.

mp_hwdec_info is still around; it's still needed, but is reduced to its
role of handling delayed loading of the hwdec backend.
2015-01-22 15:32:23 +01:00
wm4
b2149f7fe1 vaapi: minor simplification 2015-01-21 22:12:30 +01:00
wm4
f1e78306cb vaapi: try dealing with Intel's braindamaged shit drivers
So talking to a certain Intel dev, it sounded like modern VA-API drivers
are reasonable thread-safe. But apparently that is not the case. Not at
all. So add approximate locking around all vaapi API calls.

The problem appeared once we moved decoding and display to different
threads. That means the "vaapi-copy" mode was unaffected, but decoding
with vo_vaapi or vo_opengl lead to random crashes.

Untested on real Intel hardware. With the vdpau emulation, it seems to
work fine - but actually it worked fine even before this commit, because
vdpau was written and designed not by morons, but competent people
(vdpau is guaranteed to be fully thread-safe).

There is some probability that this commit doesn't fix things entirely.
One problem is that locking might not be complete. For one, libavcodec
_also_ accesses vaapi, so we have to rely on our own guesses how and
when lavc uses vaapi (since we disable multithreading when doing hw
decoding, our guess should be relatively good, but it's still a lavc
implementation detail). One other reason that this commit might not
help is Intel's amazing potential to fuckup anything that is good and
holy.
2014-08-21 22:45:58 +02:00
wm4
72aac9ae8a video: introduce failure path for image allocations
Until now, failure to allocate image data resulted in a crash (i.e.
abort() was called). This was intentional, because it's pretty silly to
degrade playback, and in almost all situations, the OOM will probably
kill you anyway. (And then there's the standard Linux overcommit
behavior, which also will kill you at some point.)

But I changed my opinion, so here we go. This change does not affect
_all_ memory allocations, just image data. Now in most failure cases,
the output will just be skipped. For video filters, this coincidentally
means that failure is treated as EOF (because the playback core assumes
EOF if nothing comes out of the video filter chain). In other
situations, output might be in some way degraded, like skipping frames,
not scaling OSD, and such.

Functions whose return values changed semantics:

  mp_image_alloc
  mp_image_new_copy
  mp_image_new_ref
  mp_image_make_writeable
  mp_image_setrefp
  mp_image_to_av_frame_and_unref
  mp_image_from_av_frame
  mp_image_new_external_ref
  mp_image_new_custom_ref
  mp_image_pool_make_writeable
  mp_image_pool_get
  mp_image_pool_new_copy
  mp_vdpau_mixed_frame_create
  vf_alloc_out_image
  vf_make_out_image_writeable
  glGetWindowScreenshot
2014-06-17 22:43:43 +02:00
wm4
d99f30d726 video: warn if an emulated hwdec API is used
mpv supports two hardware decoding APIs on Linux: vdpau and vaapi. Each
of these has emulation wrappers. The wrappers are usually slower and
have fewer features than their native opposites. In particular the libva
vdpau driver is practically unmaintained.

Check the vendor string and print a warning if emulation is detected.
Checking vendor strings is a very stupid thing to do, but I find the
thought of people using an emulated API for no reason worse.

Also, make --hwdec=auto never use an API that is detected as emulated.
This doesn't work quite right yet, because once one API is loaded,
vo_opengl doesn't unload it, so no hardware decoding will be used if the
first probed API (usually vdpau) is rejected. But good enough.
2014-05-28 02:08:45 +02:00
wm4
422af1b948 vaapi: solve potential problem with ambiguous image formats
VAAPI has some ambiguous image formats, like VA_FOURCC_I420,
VA_FOURCC_IYUV, VA_FOURCC_YV12 (the latter exactly the same as the first
two, just with swapped planes). There is potentially a problem when one
specific VAAPI format was picked, and converting it to a mpv format and
back to a VAAPI FourCC would result in a numerically different format
(even if it's actually the same). Then it could e.g. happen that
functions like va_surface_upload() reallocate the underlying VAImage,
which would be inefficient. Change the code so that this can't happen.

(Probably not a problem in practice with the current VAAPI usage.)
2014-03-17 18:23:24 +01:00
wm4
123c34a12e vaapi: simplify
Merge va_surface_priv into va_surface.
2014-03-17 18:22:48 +01:00
wm4
49d13f76ca vaapi: make struct va_surface private
It's not really needed to be public. Other code can just use mp_image.
The only disadvantage is that the other code needs to call an accessor
to get the VASurfaceID.
2014-03-17 18:22:35 +01:00
wm4
31fc5e8563 vaapi: replace image pool implementation with mp_image_pool
Although I at first thought it would be better to have a separate
implementation for hwaccels because the difference to software images
are too large, it turns out you can actually save some code with it.

Note that the old implementation had a small memory management bug. This
got painted over in commit 269c1e1, but is hereby solved properly.

Also note that I couldn't test vf_vavpp.c (due to lack of hardware), and
I hope I didn't accidentally break it.
2014-03-17 18:22:25 +01:00
wm4
6565ec8b41 vaapi: fix initialization error code path
"res" can be uninitialized in the error case.
2013-12-23 11:22:12 +01:00
wm4
70af7ab8e5 vaapi: mp_msg conversions
This ended up a little bit messy. In order to get a mp_log everywhere,
mostly make use of the fact that va_surface already references global
state anyway.
2013-12-21 20:50:11 +01:00
wm4
0112143fda Split mpvcore/ into common/, misc/, bstr/ 2013-12-17 02:39:45 +01:00
wm4
60cd300558 vaapi: remove unused hw image formats, simplify
PIX_FMT_VDA_VLD and PIX_FMT_VAAPI_VLD were never used anywhere. I'm not
sure why they were even added, and they sound like they are just for
compatibility with XvMC-style decoding, which sucks anyway.

Now that there's only a single vaapi format, remove the
IMGFMT_IS_VAAPI() macro. Also get rid of IMGFMT_IS_VDA(), which was
unused.
2013-11-29 14:19:29 +01:00
wm4
ed9295c250 video/out: always support redrawing VO window at any point
Before, a VO could easily refuse to respond to VOCTRL_REDRAW_FRAME,
which means the VO wouldn't redraw OSD and window contents, and the
player would appear frozen to the user. This was a bit stupid, and makes
dealing with some corner cases much harder (think of --keep-open, which
was hard to implement, because the VO gets into this state if there are
no new video frames after a seek reset).

Change this, and require VOs to always react to VOCTRL_REDRAW_FRAME.
There are two aspects of this: First, behavior after a (successful)
vo_reconfig() call, but before any video frame has been displayed.
Second, behavior after a vo_seek_reset().

For the first issue, we define that sending VOCTRL_REDRAW_FRAME after
vo_reconfig() should clear the window with black. This requires minor
changes to some VOs. In particular vaapi makes this horribly
complicated, because OSD rendering is bound to a video surface. We
create a black dummy surface for this purpose.

The second issue is much simpler and works already with most VOs: they
simply redraw whatever has been uploaded previously. The exception is
vdpau, which has a complicated mechanism to track and filter video
frames. The state associated with this mechanism is completely cleared
with vo_seek_reset(), so implementing this to work as expected is not
trivial. For now, we just clear the window with black.
2013-10-02 00:36:26 +02:00
wm4
4e1d65983a vaapi: fix inverted condition
How embarrassing. This could make --hwdec=vaapi-copy as well as
screenshots with vo_vaapi randomly fail. Regression since
commit b8382aa.
2013-09-29 13:45:15 +02:00
wm4
b8382aabb3 vaapi: make vaDeriveImage() less verbose
This can just be not supported, so making it look like a real error
doesn't make much sense.
2013-09-27 18:00:03 +02:00
wm4
0901fc8e0e vaapi: check image format in va_surface_upload()
Just for robustness. Also print a warning in vo_vaapi if this happens.
2013-09-27 18:00:03 +02:00
wm4
4d2f354da6 vaapi: potentially make reading surfaces back to system RAM faster
Don't allocate a VAImage and a mp_image every time. VAImage are cached
in the surfaces themselves, and for mp_image an explicit pool is
created. The retry loop runs only once for each surface now.

This also makes use of vaDeriveImage() if possible.
2013-09-27 17:59:44 +02:00
wm4
200fb7eceb vaapi: fix compilation with Libav
The code using FFSWAP was moved from vo_vaapi.c to vaapi.c, which didn't
include libavutil/common.h anymore, just libavutil/avutil.h. The header
avutil.h doesn't include common.h recursively in Libav, so it broke
there.

Add FFSWAP as MPSWAP in mp_common.h (copy pasted from ffmpeg) to make
sure this doesn't happen again. (This kind of stuff happens all too
often, so screw libavutil.)
2013-09-25 22:22:02 +02:00
xylosper
39d1ab82e5 vaapi: add vf_vavpp and use it for deinterlacing
Merged from pull request #246 by xylosper. Minor cosmetic changes, some
adjustments (compatibility with older libva versions), and manpage
additions by wm4.

Signed-off-by: wm4 <wm4@nowhere>
2013-09-25 13:53:42 +02:00