qemu-e2k/audio
Volker Rümelin 4218fdd77f audio: change mixing engine float range to [-1.f, 1.f]
Currently the internal float range of the mixing engine is
[-.5f, .5f]. PulseAudio, SDL2 and libasound use a [-1.f, 1.f]
range. This means with float samples the audio playback volume
is 6dB too low and audio recording signals will be clipped in
most cases.

To avoid another scaling factor in the conv_natural_float_* and
clip_natural_float_* functions with FLOAT_MIXENG defined this
patch changes the mixing engine float range to [-1.f, 1.f].

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200308193321.20668-4-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-03-16 10:18:07 +01:00
..
alsaaudio.c audio/alsaaudio: Remove superfluous semicolons 2020-02-18 20:20:49 +01:00
audio_int.h audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
audio_legacy.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
audio_template.h audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
audio_win_int.c audio: use qapi AudioFormat instead of audfmt_e 2019-03-11 10:29:26 +01:00
audio_win_int.h
audio.c audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
audio.h audio: support more than two channels in volume setting 2019-10-18 08:14:05 +02:00
coreaudio.c audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
dsound_template.h audio/dsound: fix invalid parameters error 2020-02-06 14:31:20 +01:00
dsoundaudio.c audio/dsound: fix invalid parameters error 2020-02-06 14:31:20 +01:00
Makefile.objs paaudio: port to the new audio backend api 2019-09-23 12:28:47 +02:00
mixeng_template.h audio: change mixing engine float range to [-1.f, 1.f] 2020-03-16 10:18:07 +01:00
mixeng.c audio: change mixing engine float range to [-1.f, 1.f] 2020-03-16 10:18:07 +01:00
mixeng.h audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
noaudio.c audio: fix bug 1858488 2020-01-31 08:48:03 +01:00
ossaudio.c ossaudio: disable poll mode can't be reached 2020-01-31 08:48:57 +01:00
paaudio.c audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
rate_template.h audio: use size_t where makes sense 2019-08-21 09:13:37 +02:00
sdlaudio.c audio: proper support for float samples in mixeng 2020-02-06 14:35:57 +01:00
spiceaudio.c audio: replace shift in audio_pcm_info with bytes_per_frame 2019-10-18 08:14:05 +02:00
trace-events trace-events: Shorten file names in comments 2019-03-22 16:18:07 +00:00
wavaudio.c audio: fix bug 1858488 2020-01-31 08:48:03 +01:00
wavcapture.c audio: basic support for multi backend audio 2019-08-21 09:13:37 +02:00