hardware-libaudio

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select_card: only open PCM devices with the same type as requested

Let select_card() only open /dev/snd/pcmCxp for playback and /dev/snd/pcmCxc
for capture device. This way select_card won't try to open a device twice.

In some cases the second query on a playback device(even though
select_card is searching for a capture device) will block inside the
kernel causing audio to stop working.

audio_hw: select HDMI audio if notified by the framework

audio_hw: allow to select HDMI audio manually

Before we can select HDMI audio automatically, let the user
do it manually by setting hal.audio.primary.hdmi=1.

audio_hw: cache HDMI audio interface

Now we cache the HDMI audio interface as well to avoid misusing them.

We are near to fully support HDMI audio. What missed is the events
to trigger the switching between primary speaker and HDMI.

Add IntelHDMI audio HAL

audio_route: avoid an unnecessary error

The change tries to remove the error message:

07-27 16:25:15.129 1249 1249 E audio_hw_primary: Unable to open the mixer, aborting.

However, audio_route still doesn't work properly unless
we put an appropriate mixer_paths.xml.

audio_hw: search sound card more properly

Scan /dev/snd/ to find the appropriate sound card.
Ignore IntelHDMI since it's handled by another HAL.

audio_hw: add parameters to match new audio HAL

audio_hw: fix unused parameter warnings

audio_hw: deprecate audio_stream_frame_size()

audio_policy.conf: make the headset microphone work

include the header for string functions prototypes

Also fixes the warning of unused parameter 'tag_name'.

fallback to sampling rates 44100 if possible

Merge remote-tracking branch 'x86/kitkat-x86' into lollipop-x86

change the default sampling rates to 48000

The baytrail platform only supports 48000.
It won't affect others since all sound cards
I tested so far support 48000 as well.

enable multiarch builds

Convert LOCAL_MODULE_PATH to LOCAL_MODULE_RELATIVE_PATH
to support 64-bit targets.

Also add audio.r_submix.default.

audio_route: fix mediaserver crash

The segfault is because a null audio_route param is passed into
function reset_mixer_state.

Issue: 1209

Fix bad sleep time

The bad sleep time occurs when pcm_get_htimestamp() fails, leaving
kernel_frames uninitialized and causing out->cur_write_threshold to be
set to a very large value. The following patch ensures kernel_frames is
initialized to a sane value, it should fix most of the "limiting sleep
time" warnings and stuttering audio caused by sleeping too much.

add audio.usb.default

Suggested by Masaki Muranaka <monaka@monami-ya.jp>.

detect pcm card automatically

audio hal for jb-x86

Import from device/asus/grouper/audio of AOSP.

initial import