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226 Commits

Author SHA1 Message Date
Rosen Penev
594dfe572b
clang-tidy: mark a bunch of variables constexpr 
Found with cppcoreguidelines-interfaces-global-init

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2021-01-16 18:35:31 -08:00
Max Kellermann
5348f8c9c8 copyright year 2021 2021-01-01 19:54:28 +01:00
Max Kellermann
38b41fc3fd filter/ffmpeg: detect the output sample format 
Some FFmpeg filters change the sample format, and since MPD assumes
this never happens, this results in loud noise instead of music.  This
commit finally implements the TODO comment by sending one frame of
silence to the filter and checking the output frame's format.

Closes https://github.com/MusicPlayerDaemon/MPD/issues/1009
 2020-11-16 09:39:34 +01:00
Max Kellermann
2da3cff1e8 filter/LoadChain: use the AutoConvertFilter 
This adds support for input samples other than 16 bit to the FFmpeg
filter plugin.
 2020-11-04 20:15:19 +01:00
Max Kellermann
0c965d0573 filter/AutoConvert: move the Filter class to TwoFilters.cxx 2020-11-04 20:15:19 +01:00
Max Kellermann
77c14692c9 filter/AutoConvert: eliminate AutoConvertFilter if possible 
If no conversion is necessary, return the child Filter as-is.  This
allows removing all nullptr checks from AutoConvertFilter.
 2020-11-04 20:15:19 +01:00
Max Kellermann
226eb26300 filter/ffmpeg: interleave the output AVFrame 
If the FFmpeg filter outputs planar data, interleave it, just like the
FFmpeg decoder plugin does.
 2020-11-04 20:15:19 +01:00
Max Kellermann
84f772357e filter/convert: convert_filter_new() returns std::unique_ptr 2020-11-04 16:47:11 +01:00
Max Kellermann
f2b9785a67 filter/chain: pass std::string_view to filter_chain_append() 2020-11-04 16:37:53 +01:00
Max Kellermann
eeaec99c59 filter/LoadChain: use IterableSplitString() 2020-11-04 16:36:11 +01:00
Max Kellermann
b0002e3b73 filter/chain: copy the child name 
filter_chain_parse() passes a temporary string pointer which results
in a use-after-free in the PreparedChainFilter::Child::Open() error
message.
 2020-11-04 16:34:38 +01:00
Max Kellermann
27c589da97 filter/chain: remove unused field ChainFilter::Child::name 2020-11-04 16:26:50 +01:00
Rosen Penev
97425d56e7
remove gcc_unused 
[[maybe_unused]] (introduced in C++17) is standard C++.

https://clang.llvm.org/docs/AttributeReference.html#maybe-unused-unused
says that this is equivalent to the GNU unused attribute.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-16 00:08:21 -07:00
Rosen Penev
a2f5a63bbc
replace stdint.h with cstdint 
The former is deprecated by C++14. The standard says they are the same:

The header defines all types and macros the same as the C standard library
header<stdint.h>.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-12 19:04:39 -07:00
Rosen Penev
ab9f5d2067
replace assert.h with cassert 
The former was deprecated with C++14.

According to the C++11 and C++17 standards, both files are identical.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-12 15:25:38 -07:00
Rosen Penev
f00f8b002a
[clang-tidy] use nodiscard 
Introduced in C++17. It replaces gcc's warn_unused_result.

Found with modernize-use-nodiscard.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-12 12:59:16 -07:00
Max Kellermann
bc6eca2115 *: add explicit 2020-02-01 14:02:43 +01:00
Max Kellermann
72ec641f0d *: use auto 2020-02-01 14:02:43 +01:00
Rosen Penev
b64fdae938
[clang-tidy] use override instead of virtual 
Found with modernize-use-override

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-01-31 21:27:26 -08:00
Max Kellermann
cd612c4eef AudioFormat: move to pcm/ 2020-01-18 20:24:59 +01:00
Max Kellermann
2817bf9e95 copyright year 2020 2020-01-18 19:23:49 +01:00
Jacob Vosmaer
940206d106 filter/plugins: add missing meson dependency 2019-12-09 23:49:35 +01:00
Max Kellermann
4c7154bd23 filter/Observer: add noexcept 2019-08-26 21:04:35 +02:00
Max Kellermann
4f5c3b349d filter/Filter: document that Flush() can throw 2019-08-26 21:03:25 +02:00
Max Kellermann
4fabfdabde filter/Filter: allow throwing any exception 2019-08-26 21:01:22 +02:00
Max Kellermann
2e9b5e4e78 filter/Registry: rename the source file 2019-08-26 20:54:52 +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
5fa7610264 pcm/Volume: Open() returns output sample format 
Prepare for a new mode which may convert to a different sample format
when applying volume, to reduce dithering.
 2019-07-05 19:03:00 +02:00
Max Kellermann
d663f81420 include cleanups (powered by iwyu) 2019-07-05 09:59:58 +02:00
Max Kellermann
e87f0ca771 pcm/Pcm*: drop more "Pcm" prefixes from source file names 2019-06-17 11:17:48 +02:00
Max Kellermann
a139279575 Copyright year 2019 2019-06-17 11:17:30 +02:00
Max Kellermann
e78d825059 pcm/PcmConvert: eliminate Open() and Close() 
Let the constructor and destructor do this.  This means that all users
have to be converted to allocate PcmConvert dynamically.
 2019-04-04 21:01:08 +02:00
Max Kellermann
00b04468dc filter/Convert: make in_audio_format const 2019-04-04 21:00:23 +02:00
Max Kellermann
ca4e53859d Merge branch 'v0.21.x' 2019-03-25 08:11:07 +01:00
Max Kellermann
8b327f1d9b filter/AutoConvert: implement Flush() 2019-03-24 22:42:06 +01:00
Max Kellermann
aef0507abb filter/Filter: fix typo in API doc 2019-03-24 22:34:11 +01:00
Max Kellermann
61120d2059 filter/ffmpeg: use only one AVFrame 
The two were never used at the same time, and merging them saves one allocation.
 2019-03-24 22:29:57 +01:00
Max Kellermann
cc1822810f filter/ffmpeg: use av_buffersrc_add_frame() instead of av_buffersrc_write_frame() 
This transfers ownership of the buffer instead of adding another reference.
 2019-03-24 22:28:40 +01:00
Max Kellermann
a21c6884f2 filter/ffmpeg: call av_frame_unref() before av_buffersink_get_frame() 
Fix another memory leak.

Closes https://github.com/MusicPlayerDaemon/MPD/issues/514
 2019-03-24 22:27:48 +01:00
Max Kellermann
2700eed08d filter/ffmpeg: remove unnecessary av_frame_make_writable() call 
A newly allocated buffer doesn't need this call; it only adds overhead
for copying the data.
 2019-03-24 22:26:09 +01:00
Max Kellermann
ec2badbedd filter/ffmpeg: call av_frame_unref() before av_frame_get_buffer() 
av_frame_get_buffer() leaks memory if buffers were already allocated.

Fixes one of the memory leaks of https://github.com/MusicPlayerDaemon/MPD/issues/514
 2019-03-24 22:24:54 +01:00
Max Kellermann
ec5be91ff6 filter/ffmpeg: new filter plugin 2019-03-18 18:56:06 +01:00
Max Kellermann
a7a9490a0c filter/hdcd: include cleanup 2019-03-18 18:55:25 +01:00
Max Kellermann
c0d6008781 filter/hdcd: move generic code to class FfmpegFilter 2019-03-18 18:35:23 +01:00
Max Kellermann
9f62824e98 filter/hdcd: fix typo 2019-03-18 18:32:20 +01:00
Max Kellermann
c673528cff filter/hdcd: new filter plugin based on FFmpeg's "af_hdcd" 2019-03-18 13:48:24 +01:00
Max Kellermann
321f01b95c filter/plugins/null: move code to src/filter/NullFilter.hxx 2019-03-18 13:48:24 +01:00
Max Kellermann
9acc6617d2 filter/registry: move extern lines to plugin headers 2019-03-12 12:26:12 +01:00
Max Kellermann
4f72f49216 filter/normalize: clean up forward declarations 2019-03-12 12:24:31 +01:00
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