Commit Graph

79 Commits

Author SHA1 Message Date
Max Kellermann
f2c3d86612 output: use StringIsEqual() 2019-09-26 14:48:31 +02:00
Max Kellermann
af99f9fc90 pcm/Volume: convert S16 to S24 to preserve quality and reduce noise
Applying software volume to S16 samples means several bits of
precision are lost; at 25% volume, two bits are lost.  Additionally,
dithering adds some noise.

The problem gets worse when you apply the software volume code twice:
for the software mixer volume, and again for the replay gain.  This
loses some more precision and adds even more dithering noise, which
can become audible (see
https://github.com/MusicPlayerDaemon/MPD/issues/542).

By converting everything to 24 bit, we need to shift only two bits to
the right instead of ten, losing nearly no precision, and dithering is
not needed.  Even if the output device is unable to play S24 directly,
we can convert back to S16 with only one stage of dithering.

Closes https://github.com/MusicPlayerDaemon/MPD/issues/542
2019-07-30 20:03:37 +02:00
Max Kellermann
426891ab31 output/Init: pass MixerType to _load_mixer() 2019-07-12 17:11:14 +02:00
Max Kellermann
d663f81420 include cleanups (powered by iwyu) 2019-07-05 09:59:58 +02:00
Max Kellermann
a139279575 Copyright year 2019 2019-06-17 11:17:30 +02:00
Max Kellermann
ce49d99c2f check.h: remove obsolete header
Since we switched from autotools to Meson in commit
94592c1406, we don't need to include
`config.h` early to properly enable large file support.  Meson passes
the required macros on the compiler command line instead of defining
them in `config.h`.

This means we can include `config.h` at any time, whenever we want to
check its macros, and there are no ordering constraints.
2018-11-19 16:33:49 +01:00
Max Kellermann
f5c9071494 *: copyright year 2018 2018-10-31 17:54:59 +01:00
Max Kellermann
1a9659ef45 output/Init: pass global configuration in struct AudioOutputDefaults 2018-08-19 07:52:23 +02:00
Max Kellermann
aaa438e745 mixer/Type: mixer_type_parse() throws on error 2018-08-19 07:49:54 +02:00
Max Kellermann
4531e4cc55 filter/LoadChain: move code to class FilterFactory
Eliminate a use of GetGlobalConfig().
2018-08-18 20:57:02 +02:00
Max Kellermann
7b02c0224c filter/LoadChain: use struct ConfigData 2018-07-17 22:05:24 +02:00
Max Kellermann
816603fd9a config/Config*: rename files, drop "Config" prefix 2018-07-16 19:50:07 +02:00
Max Kellermann
97f670658f util/StringFormat: new utility library 2018-01-24 13:28:28 +01:00
Max Kellermann
a5b93008f5 output/Filtered: remove redundant nullptr assignments from Setup() 2018-01-04 10:32:10 +01:00
Max Kellermann
ef71df60f6 output/Multiple: use std::unique_ptr<FilteredAudioOutput> 2018-01-04 10:14:26 +01:00
Max Kellermann
f1ee4caddd output/Init: fix configuration option name in error message 2018-01-04 09:57:28 +01:00
Max Kellermann
5ede02aed8 filter/FilterConfig: rename to LoadChain.cxx 2018-01-02 23:09:36 +01:00
Max Kellermann
551ac56a33 Filter/Internal: split header 2018-01-01 18:48:34 +01:00
Max Kellermann
e2621d5e44 filter/Plugin: return std::unique_ptr<PreparedFilter> 2017-12-27 11:39:01 +01:00
Max Kellermann
914df18bf9 Main, ...: catch any exception, not just std::runtime_error 2017-12-19 10:56:23 +01:00
Max Kellermann
a257504ba4 mixer/Plugin: pass AudioOutput to init()
Fix breakage from commit bea5681fd8
2017-08-10 13:07:36 +02:00
Max Kellermann
31bad5f7af output/Interface: convert to abstract class
Yet another C-style vtable replaced with C++.
2017-08-10 09:01:41 +02:00
Max Kellermann
9c9a9ccd5c output/Interface: convert to class, make attributes private 2017-08-09 17:03:07 +02:00
Max Kellermann
bea5681fd8 output/Interface: define a new struct AudioOutput
Hide struct FilteredAudioOutput from the plugins, preparing for hiding
MPD's core internals.
2017-08-08 18:58:40 +02:00
Max Kellermann
e11229494e output/Filtered: add method NeedFullyDefinedAudioFormat()
Avoid accessing FilteredAudioFormat attributes directly.
2017-08-08 18:57:59 +02:00
Max Kellermann
5431fca99b output/Filtered: add attribute "log_name" 2017-08-08 14:02:58 +02:00
Max Kellermann
47c9d6ac64 output/Internal: rename source to Filtered.cxx 2017-08-07 21:50:13 +02:00
Max Kellermann
d0157af13e filter/Internal: rename struct AudioOutput to FilteredAudioOutput
Prepare to add an abstract class AudioOutput, to be implemented by
plugins, to get rid of the C-style vtable.
2017-08-07 18:47:39 +02:00
Max Kellermann
b8be7ec90e filter/Normalize: add normalize_filter_prepare() 2017-08-07 18:28:52 +02:00
Max Kellermann
a3d71f4b91 filter/Convert: add convert_filter_prepare() 2017-08-07 18:27:00 +02:00
Max Kellermann
9250819b75 filter/Volume: add volume_filter_prepare()
Circumvent filter_new() with a fake ConfigBlock.
2017-08-07 18:23:13 +02:00
Max Kellermann
ebecee3d85 output/Internal: move "client" to struct AudioOutputControl 2017-05-23 00:32:03 +02:00
Max Kellermann
5eef146871 output/Internal: move several flags to struct AudioOutputControl 2017-05-22 23:40:20 +02:00
Max Kellermann
4faef28cc5 release v0.20.7
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Merge tag 'v0.20.7'

release v0.20.7
2017-05-15 23:01:49 +02:00
Max Kellermann
71f0ed8b74 *: add "noexcept" to many, many function prototypes
This eliminates some overhead, because the compiler doesn't need to
consider these functions throwing.
2017-05-08 14:44:49 +02:00
Max Kellermann
89b900432e output/Internal: move thread-specific stuff to AudioOutputControl
The AudioOutput struct (which is exposed to all plugins) should not be
aware that it's being controlled by another thread.
2017-04-28 22:04:30 +02:00
Max Kellermann
781487c4dd thread/Thread: use BoundMethod 2017-02-10 22:46:09 +01:00
Max Kellermann
8fd9d91974 output/Plugin: pass EventLoop& to init()
Eliminate dependency on io_thread_get().
2017-01-25 22:54:41 +01:00
Max Kellermann
fead4bbfd9 output/Plugin: convert pointers to references 2017-01-25 09:48:59 +01:00
Max Kellermann
5900253b85 update copyright year 2017-01-03 20:48:59 +01:00
Max Kellermann
982d1bf662 output/Init: convert audio_output_setup() to method 2016-12-29 22:59:03 +01:00
Max Kellermann
8a407bfbb0 output/Thread: move code to new class AudioOutputSource 2016-12-26 13:35:19 +01:00
Max Kellermann
ccb45b6f6e output/Client: new interface to replace direct access to class PlayerControl 2016-12-14 20:29:15 +01:00
Max Kellermann
3000b9dcde filter/ReplayGain: add ReplayGainConfig copy
Remove dependency on ReplayGain global variables.
2016-12-03 12:51:02 +01:00
Max Kellermann
3b867462a3 filter/ReplayGain: remove FilterPlugin instance, add explicit constructor 2016-12-03 12:34:23 +01:00
Max Kellermann
bfb0897b54 filter/ReplayGain: convert pointers to references 2016-12-03 12:13:45 +01:00
Max Kellermann
d9cb85df83 output/Plugin: remove 'Error&' parameters, use C++ exceptions only 2016-11-09 12:36:21 +01:00
Max Kellermann
ac9ce0b3ad output/Init: migrate _setup() from class Error to C++ exceptions 2016-11-09 12:09:00 +01:00
Max Kellermann
cf2b814629 output/Init: migrate Configure() from class Error to C++ exceptions 2016-11-09 12:06:54 +01:00
Max Kellermann
bbe7a37359 output/Internal: hide Configure() and remove the non-configuring constructor 2016-11-09 12:06:06 +01:00