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fd71514068
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322 Commits

Author SHA1 Message Date
Max Kellermann
fd71514068 Merge remote-tracking branch 'neheb/h' 2020-03-16 17:29:05 +01:00
Rosen Penev
77c6c3fabf
remove unreachable code 
Found with -Wunreachable-code-break

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-16 00:14:13 -07:00
Rosen Penev
3ec9fcfc44
treewide: use boost::lround when std::round is unavailable 
This is the case with uClibc-ng currently.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-15 20:17:31 -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
2db8bcc353
replace stddef.h with cstddef 
The former is deprecated with C++14. The standard says both are the same:

The contents and meaning of the header<cstddef>are the same as the C
standard library header<stddef.h>,except that it does not declare the type
wchar_t, that it also declares the type byte and its associated
operations (21.2.5), and as noted in 21.2.3 and 21.2.4.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-03-12 19:04:38 -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
7b03f55cb4 util/bit_reverse: convert to C++ 2020-02-05 19:49:18 +01:00
Rosen Penev
dfed9546aa
[clang-tidy] replace std::bind with lambdas 
Found with modernize-avoid-bind

Signed-off-by: Rosen Penev <rosenp@gmail.com>
 2020-02-01 19:43:01 -08:00
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
Max Kellermann
bcc4e97c60 pcm/PcmFormat: use using instead of typedef 2020-02-01 13:38:19 +01:00
Max Kellermann
4968dd4faa pcm/Dither: use using instead of typedef 2020-02-01 13:38:00 +01:00
Max Kellermann
cd612c4eef AudioFormat: move to pcm/ 2020-01-18 20:24:59 +01:00
Max Kellermann
914ad261ed pcm/meson.build: split libpcm into two 
One basic library without dependencies, and one with heavy
dependencies like libsamplerate.
 2020-01-18 20:08:23 +01:00
Max Kellermann
2817bf9e95 copyright year 2020 2020-01-18 19:23:49 +01:00
Max Kellermann
a37d22de8a pcm/Convert: choose pcm2dsd float/integer according to dest_format 2020-01-17 19:15:44 +01:00
Max Kellermann
452e1c1a6f pcm/Convert: throw if !ENABLE_DSD 2020-01-17 19:15:28 +01:00
Max Kellermann
8db86e2820 Revert "pcm/Convert: add option to enable the integer-only dsd2pcm implementation" 
This reverts commit c84bae739a.  A
configuration option is not necessary, because the PcmConvert
constructor knows already whether integer or floating point is needed.
 2020-01-17 19:11:10 +01:00
Max Kellermann
c84bae739a pcm/Convert: add option to enable the integer-only dsd2pcm implementation 2020-01-17 16:37:09 +01:00
Max Kellermann
925b5954c3 pcm/Dsd2Pcm: add integer-only implementation 2020-01-17 16:17:32 +01:00
Max Kellermann
235b6980b8 pcm/Dsd2Pcm: add optimized stereo version 
This code path is 2% faster.
 2020-01-14 23:38:46 +01:00
Max Kellermann
ee46150329 pcm/Dsd2Pcm: add class MultiDsd2Pcm 2020-01-14 23:29:03 +01:00
Max Kellermann
79c585bf03 pcm/PcmDsd: use size_t 2020-01-14 23:28:34 +01:00
Max Kellermann
becd81f771 pcm/PcmDsd: manage Dsd2Pcm instances, not pointers 2020-01-14 23:26:34 +01:00
Max Kellermann
2073a2c1b0 pcm/Dsd2Pcm: remove unused "lsbf" flag 2020-01-14 23:20:45 +01:00
Max Kellermann
3f3104348e pcm/Dsd2Pcm: add "restrict" attribute 2020-01-14 23:20:36 +01:00
Max Kellermann
4038d8527f pcm/Dsd2Pcm: eliminate "& 0xff" 2020-01-14 22:56:28 +01:00
Max Kellermann
3565f0c8ce pcm/Dsd2Pcm: move code to TranslateSample() 
10% speedup.  Strange, huh?
 2020-01-14 22:51:20 +01:00
Max Kellermann
9647b2cb01 pcm/Dsd2Pcm: move code to ApplySample() 
For some reason, this speeds up the library by 2%.
 2020-01-14 22:43:11 +01:00
Max Kellermann
2d5bf53240 pcm/Dsd2Pcm: use sizet_t instead of int 2020-01-14 22:40:54 +01:00
Max Kellermann
a65f7b1006 pcm/Dsd2Pcm: use std::fill_n() 2020-01-14 22:39:54 +01:00
Max Kellermann
bc5b647053 pcm/Dsd2Pcm: use sizet_t instead of unsigned 2020-01-14 22:37:30 +01:00
Max Kellermann
1708ae3e3c pcm/Dsd2Pcm: use uint8_t instead of unsigned char 2020-01-14 22:36:50 +01:00
Max Kellermann
6bfbc5d320 pcm/Dsd2Pcm: move code to CalcOutputSample() 2020-01-14 22:25:54 +01:00
Max Kellermann
e7483bc5bc pcm/Dsd2Pcm: make variables more local 2020-01-14 22:21:32 +01:00
Max Kellermann
b911ec1a29 pcm/Dsd2Pcm: convert to class 2020-01-14 22:16:02 +01:00
Max Kellermann
ca2633bf26 pcm/Dsd2Pcm: remove unused function dsd2pcm_clone() 2020-01-14 22:15:05 +01:00
Max Kellermann
566ac171f5 pcm/Dsd2Pcm: generate ctables at compile time 2020-01-14 22:11:12 +01:00
Max Kellermann
4d95402e4e pcm/Dsd2Pcm: move formula to CalculateCtableValue() 2020-01-14 22:11:12 +01:00
Max Kellermann
4d102c4770 pcm/Dsd2Pcm: convert parameter to bool 2020-01-14 22:11:12 +01:00
Max Kellermann
91bc41ea20 pcm/Dsd2Pcm: add noexcept and remove extern 2020-01-14 22:11:12 +01:00
Max Kellermann
e565dcf18c pcm/dsd2pcm: convert to C++ 2020-01-14 22:05:58 +01:00
Max Kellermann
5a87fc7c26 pcm/dsd2pcm: remove unused sources 2020-01-14 22:05:27 +01:00
Max Kellermann
44d7a1d8d2 pcm/Traits: drop "_type" from type names 2020-01-03 16:01:44 +01:00
Max Kellermann
683d5848f4 release v0.21.17 
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Merge tag 'v0.21.17'

release v0.21.17
 2019-12-16 23:44:20 +01:00
Max Kellermann
dc3c0c8866 pcm/Convert, ...: add missing include for std::runtime_error 2019-12-16 22:52:50 +01:00
Max Kellermann
f357f743a3 pcm/Volume: use transform_n() 2019-08-10 12:05:37 +02:00
Max Kellermann
91e565d92e pcm/PcmFormat: use transform_n() 2019-08-10 12:05:35 +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