| 7a0bacaf9634d6bf0abbea9608fb15e94a675358 |
19-Jul-2012 |
Glenn Kasten <gkasten@google.com> |
Add mono <-> stereo upmix and downmix routines
Change-Id: I3d960fb27fd3440f903333903c0dbf2ab59d3b56
nclude/audio_utils/primitives.h
rimitives.c
|
| f06cdb511b2d093fed687fdff4153f7b6e088b62 |
30-Mar-2012 |
Eric Laurent <elaurent@google.com> |
Echo reference tuning and bug fixes
- Add some smoothing in the method used to detect and compensate for echo path
delay deviation: update the reference buffer only if a deviation in the same
direction is observed for more than N consecutive reads.
Also increase the threshold controlling the reference buffer update to avoid
excessive adjustments.
- Fix problem in get_next_buffer() when echo_reference_write() is called with
variable buffer sizes which happens when the echo reference is used after a
resampler in the audio HAL.
- Use the same resampler quality level in echo reference and audio HAL to help
the AEC by reducing the delay variation and filtering differences between the
capture and echo path.
- Take resampler delay into account when calculating echo reference delay.
Change-Id: I2f425154efddd9a28f1d035fde70d55104043606
cho_reference.c
|
| 67d46429d51999359504f00c9701a9348a361f7a |
14-Mar-2012 |
Glenn Kasten <gkasten@google.com> |
Prepare to move system/media
Change-Id: Iac6dcfb72753e53e9a42b5feeaa2d6523f2395a4
ndroid.mk
|
| c164cb8a9ee435c00d1a7daeaf5e6836d772eb40 |
17-Feb-2012 |
Eric Laurent <elaurent@google.com> |
echo reference: fix buffer overflow
commit 33e8f78b introduced a regression causing the input buffer
size to be underestimated when downsampling and doing stereo to mono
conversion.
Also a test in create_echo_reference() was not removed and prevented
write sampling rates lower than read sampling rates.
Change-Id: I2ce2e32748eb9d00f4d5b32e5db5149f177c8804
cho_reference.c
|
| bea20acc937e3be459416e07045d69b011e21ce8 |
14-Feb-2012 |
Glenn Kasten <gkasten@google.com> |
Fix memory leak
Change-Id: I6937d23aa5c8f1f85368f8a6909272cd9b0994dc
esampler.c
|
| 33e8f78bb282cbb7b1c55ce0c9d412458989bc9e |
06-Feb-2012 |
Eric Laurent <elaurent@google.com> |
audio utils: modify echo reference resampler
Modify echo reference resampler to accept upsampling.
This allows higher sampling rates in the capture path than
in the playback path.
Change-Id: Id7b5a11a53e8e09511dcb060bff8355bca3c1420
cho_reference.c
|
| ddb2e930bef3d1be1627c613fb8f3df848166ac7 |
16-Jan-2012 |
Glenn Kasten <gkasten@google.com> |
Move memcpy_to_i16_from_u8 from libmedia
Change-Id: I178b953767f11abcca721efcd7f255d0cb2f3bd0
nclude/audio_utils/primitives.h
rimitives.c
|
| a269f35b6247cb69e8815b84440bf1bfc938b87b |
16-Jan-2012 |
Glenn Kasten <gkasten@google.com> |
Move fixed FFT from frameworks/base/media/libmedia
Change-Id: I55a3706c329de471ac867f196f777c71c1306bcb
ndroid.mk
ixedfft.cpp
nclude/audio_utils/fixedfft.h
|
| d0e472977acbfd5c8d56d506f40039f451f84f8f |
06-Jan-2012 |
Steve Block <steveblock@google.com> |
Rename (IF_)LOGW(_IF) to (IF_)ALOGW(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/157065
Bug: 5449033
Change-Id: I270cbf7b920d5f2fbb5f345f3c88426697c4391d
cho_reference.c
esampler.c
|
| 632e0c016c9a518b36f09988b740b3bc1199c3e4 |
16-Dec-2011 |
Glenn Kasten <gkasten@google.com> |
Extract out audio DSP primitives from AudioFlinger
Change-Id: If7e8d934f773981e1f63c16aa57ada37dc8d3cd6
ndroid.mk
nclude/audio_utils/primitives.h
rimitives.c
|
| cdde1970f4f80034b9f2b23bf43a0b28372867a1 |
28-Nov-2011 |
Eric Laurent <elaurent@google.com> |
audio utils: fix resampler frame count calculation
The calculation of the number of input frames needed by
resampler_resample_from_provider() for a given number of output frames
is broken. The consequence is that we request too many frames when upsampling
causing unecessary buffering and delay and too few frames when downsampling causing
more calls to provider->get_next_buffer() than necessary.
Change-Id: I74b6a1708f347f45ca3c12312bf1b47320823742
esampler.c
|
| 473d4a5c5c66fd8a2e99791d61fa16076558ab54 |
26-Oct-2011 |
Steve Block <steveblock@google.com> |
Rename LOGV(_IF) to ALOGV(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/#/c/143865
Bug: 5449033
Change-Id: I4c0e3dc9da0a0cdf9aef8be4fae7b24da876dc17
cho_reference.c
esampler.c
|
| c9d5dff9789312449c936913a577fa799565bf1f |
01-Sep-2011 |
Eric Laurent <elaurent@google.com> |
clean up in echo reference code
Change-Id: Ie06ed382eee2f1d4d1289d9a49d8a93dcf103e4e
cho_reference.c
|
| b3184d71bc6cee9fcbb36343e379143329be00ce |
18-Aug-2011 |
Eric Laurent <elaurent@google.com> |
Converted libaudioutils implementation to C.
Converted libaudioutils implementation and interfaces from C++ to C
and removed dependencies from frameworks/base classes so that it can
be used by any audio HAL implementation.
Change-Id: I3f7ce541be8495d41864661451540971b067359b
ndroid.mk
choReference.cpp
eSampler.cpp
cho_reference.c
nclude/audio_utils/EchoReference.h
nclude/audio_utils/ReSampler.h
nclude/audio_utils/echo_reference.h
nclude/audio_utils/resampler.h
esampler.c
|
| c369e05b3d3e48b54f675434f5ee92efe016a6bc |
17-Aug-2011 |
Eric Laurent <elaurent@google.com> |
Created library for common audio HAL functions.
libaudioutils groups functions that can be used by any audio HAL
implementation.
Current functions are:
- a resampler based on speex resampler.
- an echo reference module providing resampling, buffering and
time stamp management of PCM data between an output stream and an
input stream for use as echo reference by an AEC module.
This commit is the first step consisting of moving code previously in
crespo audio HAL. This C++ code will the be converted to C and stripped from
dependencies to frameworks/base classes for use by all audio HALs.
Change-Id: Ifa51e0c6358c23122a379d7f5d9ce13a65ff0cf0
ndroid.mk
choReference.cpp
eSampler.cpp
nclude/audio_utils/EchoReference.h
nclude/audio_utils/ReSampler.h
|