Commit Graph

28 Commits

Author SHA1 Message Date
Kacper Michajłow ae230b1294 audio/chmap: support up to 64 channels
This fixes AAC 22.2 playback
2023-09-29 02:35:10 +00:00
Kacper Michajłow 0728e4778f chmap: add more channel layouts up to 22.2 2023-09-29 02:35:10 +00:00
Kacper Michajłow db59a1c1a7 audio/chmap: link string buffer size to MP_NUM_CHANNELS 2023-09-29 02:35:10 +00:00
Jan Ekström 8123adadbd audio/chmap: add mp_iterate_builtin_layouts
Mostly useful for unit tests in order to access the channel
layouts from chmap which have mapped channels.
2022-06-15 21:19:10 +03:00
wm4 c30aa23401 player: remove special-case for DL/DR speakers
Pointless anyway. With superficial checking I couldn't find any decoder
which actually outputs this, and AO chmap negotiation would properly
ignore them anyway in most cases.
2016-08-04 19:14:35 +02:00
wm4 8a9b64329c Relicense some non-MPlayer source files to LGPL 2.1 or later
This covers source files which were added in mplayer2 and mpv times
only, and where all code is covered by LGPL relicensing agreements.

There are probably more files to which this applies, but I'm being
conservative here.

A file named ao_sdl.c exists in MPlayer too, but the mpv one is a
complete rewrite, and was added some time after the original ao_sdl.c
was removed. The same applies to vo_sdl.c, for which the SDL2 API is
radically different in addition (MPlayer supports SDL 1.2 only).

common.c contains only code written by me. But common.h is a strange
case: although it originally was named mp_common.h and exists in MPlayer
too, by now it contains only definitions written by uau and me. The
exceptions are the CONTROL_ defines - thus not changing the license of
common.h yet.

codec_tags.c contained once large tables generated from MPlayer's
codecs.conf, but all of these tables were removed.

From demux_playlist.c I'm removing a code fragment from someone who was
not asked; this probably could be done later (see commit 15dccc37).

misc.c is a bit complicated to reason about (it was split off mplayer.c
and thus contains random functions out of this file), but actually all
functions have been added post-MPlayer. Except get_relative_time(),
which was written by uau, but looks similar to 3 different versions of
something similar in each of the Unix/win32/OSX timer source files. I'm
not sure what that means in regards to copyright, so I've just moved it
into another still-GPL source file for now.

screenshot.c once had some minor parts of MPlayer's vf_screenshot.c, but
they're all gone.
2016-01-19 18:36:06 +01:00
wm4 2dc18a2f82 chmap: remove MPlayer layouts
Unused; last uses removed with the previous two commits.
2015-11-07 15:22:30 +01:00
wm4 f3a003e550 audio: bump maximum number of channels to 16
The main reason is that ao_coreaudio_exclusive needs this for some OSX
devices. They want packed audio, and special-casing this in the
coreaudio code would be too much of a pain.

The maximum of channels we can support is 64 (because FFmpeg uses 64 bit
masks for channel layouts), but since struct mp_audio can get pretty
big (has static allocations of 2 pointers for each channel for planar
mode), it's less wasteful to stay lower for now.
2015-10-26 15:54:19 +01:00
wm4 5a3cdb8f1e audio: output human-readable channel layouts too
This gets you the "logical" channel layout, instead of the exact thing
we're sending to the AO. (Tired of the cryptic shit ALSA gives me.)
2015-06-25 19:10:24 +02:00
Marcin Kurczewski 797277a233 Various spelling fixes
Signed-off-by: wm4 <wm4@nowhere>
2015-06-18 19:36:58 +02:00
wm4 00130651da audio: simplify further
Drop mp_chmap_diff() (which is unused too now), and implement
mp_chmap_diffn() in a slightly simpler way. (Too bad there is no
standard function for counting set bits.)
2015-05-08 21:22:39 +02:00
wm4 8d5924f2c9 audio: remove mp_chmap_contains()
It's unsued now.
2015-05-08 21:14:23 +02:00
wm4 d32b71d52e audio: add chmap utility function 2015-05-08 19:33:08 +02:00
wm4 55e777f10b audio: remove UNKNOWN pseudo speakers
Reuse MP_SPEAKER_ID_NA for this. If all mp_chmap entries are set to NA,
the channel layout has special "unknown channel layout" semantics, which
are used to deal with some corner cases.
2015-05-07 23:20:06 +02:00
wm4 b91b4944bd audio: define only a single NA speaker ID
Remove the requirement from mp_chmap that speaker entries must be
unique. Use this to get rid of all the redundant NA speaker IDs.
2015-05-07 23:07:14 +02:00
wm4 06050aed99 audio: introduce support for padding channels
Some audio APIs explicitly require you to add dummy channels. These are
not rendered, and only exist for the sake of the audio API or hardware
strangeness. At least ALSA, Sndio, and CoreAudio seem to have them.

This commit is preparation for using them with ao_coreaudio.

The result is a bit messy. libavresample/libswresample don't have good
API for this; avresample_set_channel_mapping() is pretty useless.
Although in theory you can use it to add and remove channels, you
can't set the channel counts. So we do the ordering ourselves by making
sure the audio data is planar, and by swapping the plane pointers. This
requires lots of messiness to get the conversions in place. Also, the
input reordering is still done with the "old" method, and doesn't
support padded channels - hopefully this will never be needed. (I tried
to come up with cleaner solutions, but compared to my other attempts,
the final commit is not that bad.)
2015-05-05 01:11:16 +02:00
wm4 548cd826c2 audio: drop unused function 2015-05-04 23:54:53 +02:00
Stefano Pigozzi 54aea7d5de chmap_sel: add multichannel fallback heuristic
Instead of just failing during channel map selection, try to select a close
layout that makes most sense and upmix/downmix to that instead of failing AO
initialization. The heuristic is rather simple, and uses the following steps:

1) If mono is required always prefer stereo to a multichannel upmix.
2) Search for an upmix that is an exact superset of the required channel map.
3) Search for a downmix that is the exact subset of the required channel map.
4) Search for either an upmix or downmix that is the closest (minimum difference
   of channels) to the required channel map.
2014-12-29 17:56:53 +01:00
wm4 28b6ce39d3 audio: make mp_chmap_to_str() return a stack-allocated string
Simplifies memory management.
2014-11-24 19:56:01 +01:00
wm4 2228d47373 ao_alsa: try to use the channel map reported by ALSA
If ALSA reports a channel map, and it looks like it makes sense (i.e.
could be converted to mpv channel map, and the channel count matches),
then use that instead of the channel map we are assuming.

This is based on code written by lachs0r (alsa_ng branch).
2014-11-24 19:44:26 +01:00
wm4 68ff8a0484 Move compat/ and bstr/ directory contents somewhere else
bstr.c doesn't really deserve its own directory, and compat had just
a few files, most of which may as well be in osdep. There isn't really
any justification for these extra directories, so get rid of them.

The compat/libav.h was empty - just delete it. We changed our approach
to API compatibility, and will likely not need it anymore.
2014-08-29 12:31:52 +02:00
xylosper c6448d7a9b audio: add enum name for speaker id 2014-02-28 20:54:15 +01:00
wm4 d8d42b44fc m_option, m_config: mp_msg conversions
Always pass around mp_log contexts in the option parser code. This of
course affects all users of this API as well.

In stream.c, pass a mp_null_log, because we can't do it properly yet.
This will be fixed later.
2013-12-21 21:05:02 +01:00
wm4 0112143fda Split mpvcore/ into common/, misc/, bstr/ 2013-12-17 02:39:45 +01:00
Stefano Pigozzi 406241005e core: move contents to mpvcore (2/2)
Followup commit. Fixes all the files references.
2013-08-06 22:52:31 +02:00
wm4 ecc6e379b2 audio/out: channel map selection
Make all AOs use what has been introduced in the previous commit.

Note that even AOs which can handle all possible layouts (like ao_null)
use the new functions. This might be important if in the future
ao_select_champ() possibly honors global user options about downmixing
and so on.
2013-05-12 21:24:57 +02:00
wm4 ab8f28a672 audio: add channel map selection function
The point is selecting a minimal fallback. The AOs will call this
through the AO API, so it will be possible to add options affecting
the general channel layout selection.

It provides the following mechanism to AOs:
- forcing the correct channel order
- downmixing to stereo if no layout is available
- allow 5.1 <-> 5.1(side) fallback
- handling "unknown" channel layouts

This is quite weak and lots of code/complexity for little gain. All AOs
already made sure the channel order was correct, and the fallback is of
little value, and could perhaps be done in the frontend instead, like
stereo downmixing with --channels=2 is handled. But I'm not really sure
how this stuff should _really_ work, and the new code will hopefully
provides enough flexibility to make radical changes to channel layout
negotiation easier.
2013-05-12 21:24:57 +02:00
wm4 0042735d7a audio: add channel map API
Unused, will be used in the following commits.

Let chmap.h define the number of maximum channels, because that is most
convenient.
2013-05-12 21:24:54 +02:00