When using an IP camera on a local network, we wanted to minimize
delay. In order to achieve minimum delay, we allowed Media Source to
set BufferingMB to 0, and when it is 0, also enable AVFMT_FLAG_NOBUFFER
in the AVFormatContext flags.
SIMDE was introduced for aarch64 support, however, the library itself
supports non-SIMD fallback, which allows us provide support to other
platforms without code changes.
There is another world beyond x86. So we can simply enable SIMDE for
processors without SSE2 support.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
This fixes an issue where local files were using the avformat interrupt
callback, which is only supposed to be use to prevent blocking on
network calls.
The interrupt callback is designed to prevent the media source from
blocking; FFmpeg will internally call it periodically to prevent FFmpeg
function calls from blocking too long, and allow the caller to determine
whether blocking should stop.
The problem with this however is that AVERROR_EXIT causes the thread to
completely exit. This fixes it so that it treats it as an EOF rather
than as an abnormal error.
The current scripting directory path given to Python on OSX is
`../data/obs-scripting`. This works when bin/ and data/ are in the same
folder like rundir after a compile and in the old .app bundles but the
new normal .app bundle structure is different.
For bundles move obspython.py and _obspython.so to the binary folder,
just like the Lua one, and pass that bin path to the Python interpreter
so it can find it.
The current working dir isn't guaranteed to be set with .app bundles
so look up binary path at runtime.
_obspython.so currently links directly against python as @rpath/Python
and has 3 common python install paths set as rpaths so it would only
work if a user had python installed at one of those hardcoded paths.
Don't link _obspython against python at all but instead link it with
"-undefined dynamic_lookup" so when it is imported by python all it's
undefined python symbols get resolved at runtime against the user
supplied python instance loaded into the process earlier.
The rpaths aren't needed anymore this way.
The libpython .dylib files on MacOS are in the python_path/lib
subdir. The user supplied python_path still needs to be to the actual
python root and not lib/ as the root path get's used as python home dir
so just add lib/ when loading the dylib.
Cuda appears to be a bit buggy and can result in corruption where as
it's not being seen with other hardware decoders. Remove cuda for now
as a hardware decoder to prevent the possibility of corruption.
Fixes a bug where hardware frames would not transfer to RAM for the last
few frames of a video. The 'ret' variable can be 0 even though there
are still frames ready.
The hardware accelerated decoder context needs to be explicitly unrefed
when it's no longer in use, otherwise it and many resources associated
with it will leak.
When hardware accelerated decoding is enabled, sometimes it can't
initialize for whatever reason, so it will fall back to software on its
own. When this occurs, it will not use the hardware pixel format on the
frame; instead it will defer to a standard format on the frame. So if
the frame format does not match the expected format, assume software
decoding. (This was also what the hw-decode.c FFmpeg example did if the
format did not match the expected format)
I40A -> RGBA, 1080p, CPU
swscale (MMX), Intel i7-6700: 1910 us -> 0 us
GPU measurements used Intel GPA with SetStablePowerState.
I40A -> RGBA, 1080p, GPU
Intel HD Graphics 530: 0 us -> 677 us
NVIDIA RTX 2080 Ti: 0 us -> 43 us
Code submissions have continually suffered from formatting
inconsistencies that constantly have to be addressed. Using
clang-format simplifies this by making code formatting more consistent,
and allows automation of the code formatting so that maintainers can
focus more on the code itself instead of code formatting.
Makes Visual C runtime libraries consistent across
Debug/MinSizeRel/Release/RelWithDebInfo, rather than just changing those
flags for RelWithDebInfo. Also adds /Zl for statically linked
libraries.
Closesobsproject/obs-studio#1421
obs-scripting CMakeList.txt expects SWIG, Python3 or Luajit to enable
scripting so in case of not finding just return and don't abort
the configuration
This adds build-time options for disabling the Lua and/or Python
scripting support in cases where users do not wish to build
it, but have the required libraries installed.
Makes it so that the scripting cmake variable ENABLE_SCRIPTING is a user
variable rather than a global internal cmake variable, and defers the
internal global cmake variable to SCRIPTING_ENABLED instead.
Lua uses 1-based index on table insertions, and lua_newtable has a bit
better performance than lua_createtable if initializing tables with an
unknown item count.
Uses the 'install' command in cmake to install scripting modules/files
(such as _obspython.so, obslua.so, and obspython.py), and changes the
install location of those files on all operating systems. If using a
non-unix structure install, those files will be installed in
data/obs-scripting/[32bit/64bit], otherwise with unix structure installs
those files will be installed to [/usr/local/lib]/obs-scripting.
(also obs, deps/media-playback, libobs/audio-monitoring, decklink,
linux-alsa, linux-pulseaudio, mac-capture, obs-ffmpeg, win-dshow,
win-wasapi)
Default channel layout for 4 channels is 4.0 in FFmpeg.
Replacing quad with 4.0 will improve compatibility since FFmpeg has
better support of its default channel layouts.
Some CMake checks were recently switched from UNIX to LINUX to get them
to not apply to macOS/OSX. Since LINUX doesn't seem to be defined,
switch these checks to UNIX AND NOT APPLE.
Fixes an issue where media-playback would not compile with older FFmpeg
versions due to the fact that the AV_PIX_FMT_VIDEOTOOLBOX was
unavailable until version 54.31.100 of libavutil (FFmpeg 2.8).
Fixes mantis issue 1045.
Closesjp9000/obs-studio#1089
(This commit also modifies the following modules: UI,
deps/media-playback, coreaudio-encoder, decklink, linux-alsa,
linux-pulseaudio, mac-capture, obs-ffmpeg, obs-filters, obs-libfdk,
obs-outputs, win-dshow, and win-wasapi)
Adds surround sound audio support to the core, core plugins, and user
interface.
Compatible streaming services: Twitch, FB 360 live
Compatible protocols: rtmp / mpeg-ts tcp udp
Compatible file formats: mkv mp4 ts (others untested)
Compatible codecs: ffmpeg aac, fdk_aac, CoreAudio aac,
opus, vorbis, pcm (others untested).
Tested streaming servers: wowza, nginx
HLS, mpeg-dash : surround passthrough
Html5 players tested with live surround:
videojs, mediaelement, viblast (hls+dash), hls.js
Decklink: on win32, swap channels order for 5.1 7.1
(due to different channel mapping on wav, mpeg, ffmpeg)
Audio filters: surround working.
Monitoring: surround working (win macOs linux (pulse-audio)).
VST: stereo plugins keep in general only the first two channels.
surround plugins should work (e.g. mcfx does).
OS: win, macOs, linux (alsa, pulse-audio).
Misc: larger audio bitrates unlocked to accommodate more channels
NB: mf-aac only supports mono and stereo + 5.1 on win 10
(not implemented due to lack of usefulness)
Closesjp9000/obs-studio#968
(This commit also modifies the deps/media-playback, obs-ffmpeg, and
win-dshow modules)
More fixes due to ffmpeg renaming some constants and deprecating
AVFMT_RAWPICTURE and AV_PIX_FMT_VDA_VLD.
Latter replaced by AV_PIX_FMT_VIDEOTOOLBOX per ffmpeg dev advice.
Closesjp9000/obs-studio#1061
If there is no network connection, OBS crashes after 5 minutes idling
with following crash:
*** longjmp causes uninitialized stack frame ***: obs terminated
======= Backtrace: =========
/lib64/libc.so.6(+0x6f1e3)[0x7f8f95f901e3]
/lib64/libc.so.6(__fortify_fail+0x37)[0x7f8f96018ba7]
/lib64/libc.so.6(+0xf7add)[0x7f8f96018add]
/lib64/libc.so.6(__longjmp_chk+0x29)[0x7f8f96018a39]
/usr/lib64/libcurl.so.4(+0xa5d5)[0x7f8f979b75d5]
/lib64/libpthread.so.0(+0x10e30)[0x7f8f962cae30]
/lib64/libc.so.6(__poll+0x2d)[0x7f8f95fff46d]
/usr/lib64/libglib-2.0.so.0(+0x4a64c)[0x7f8f91b5564c]
/usr/lib64/libglib-2.0.so.0(g_main_context_iteration+0x2c)[0x7f8f91b5575c]
/usr/lib64/libQt5Core.so.5(_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x5f)[0x7f8f9706c1ff]
/usr/lib64/libQt5Core.so.5(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0xfa)[0x7f8f9701defa]
/usr/lib64/libQt5Core.so.5(_ZN16QCoreApplication4execEv+0x9c)[0x7f8f970258fc]
obs(main+0x5ac)[0x4773dc]
/lib64/libc.so.6(__libc_start_main+0xf0)[0x7f8f95f41700]
obs(_start+0x29)[0x478389]
Internet search [1] revealed that this is a libcurl bug that can be worked
around by asking curl not to install signal handlers.
[1] https://stackoverflow.com/a/10755612
(This commit also modifies deps/media-playback)
Before, the media-playback library would detect whether something was
seekable by checking the filename for "://", which is unideal because
there are other cases where targets may not be seekable. So instead, an
explicit "seekable" property (off by default) is now in place in the
media source when not in "local file" mode. Seeking will only be
enabled if local file mode is on, or if "seekable" is explicitly checked
by the user.
Closesjp9000/obs-studio#1022
The recent changes in 88ae9af causes av_read_frame to check for
m->stopping, and fail with AVERROR_EXIT if true, which would happen
after each reset. Moving mp_media_prepare_frames to a line after
m->stopping is reset to false fixes the issue.
With certain media files (wmv in particular), the very last frame will
have a timestamp of AV_NOPTS_VALUE. This could cause the media to stick
on that frame indefinitely. Instead, use the estimated next timestamp
that was calculated in the previous frame.
Media files that have a very low framerate or very long interval between
frames would cause the media playback to stall indefinitely until the
next frame is played. This adds a 200ms timeout to ensure that the
media can be destroyed without being forced to wait indefinitely for the
next frame.
Certain functions such as avformat_open_input and av_read_frame can
block, causing the program to someone wait very long periods of time
when a network URL is used with the media source. The
interrupt_callback member variable in AVFormatContext allows safely
canceling IO operations when trying to shut down or stop the
media-playback interface.
