added below code to audio_policy.conf and push same file to /system/etc and
ran "adb shell stop media and start" media.
Now I could see in dumpsys of media.audio_policy with COMPRESS_offload flag
got enabled.
However I could not see receiving compressed data to audio_hw.c file
,please help me to understand more on this with emulator build.
compress_offload {
sampling_rates 8000|11025|16000|22050|32000|44100|48000
channel_masks AUDIO_CHANNEL_OUT_MONO|AUDIO_CHANNEL_OUT_STEREO
formats AUDIO_FORMAT_MP3
devices AUDIO_DEVICE_OUT_SPEAKER|AUDIO_DEVICE_OUT_WIRED_HEADSET|
AUDIO_DEVICE_OUT_WIRED_HEADPHONE
flags AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD|
AUDIO_OUTPUT_FLAG_NON_BLOCKING
}
On Tuesday, September 29, 2015 at 12:02:42 PM UTC-7, NY wrote:
>
> Thanks ,Finally I found to enable offload audio on emulator.
>
> On Tuesday, September 29, 2015 at 9:20:39 AM UTC-7, NY wrote:
>>
>> Thanks for your reply,Please provide me pointer if you know someone in
>> Android Team at Google, who can help me on this?
>>
>> On Monday, September 28, 2015 at 2:42:58 PM UTC-7, Glenn Kasten wrote:
>>>
>>> Sorry, I don't know how to simulate a DSP on emulator.
>>>
>>> On Monday, September 28, 2015 at 12:49:15 PM UTC-7, NY wrote:
>>>>
>>>> I actually gone through your post before I post my Question and my
>>>> question is more about how can we do this in emulator?if so where can we
>>>> do
>>>> and collect the compressed data at kernel level.this will halp to simulate
>>>> the audio dsp on emulator.
>>>>
>>>>
>>>> On Monday, September 28, 2015 at 11:48:19 AM UTC-7, Glenn Kasten wrote:
>>>>>
>>>>> See post #4 of
>>>>> https://groups.google.com/forum/#!topic/android-porting/SBVinW-RHzU
>>>>> in particular the paragraph that begins "Offloaded tracks are new for
>>>>> Android 4.4 (KitKat)"
>>>>> and the next paragraph "To read more "
>>>>>
>>>>>
>>>>> On Monday, September 28, 2015 at 11:41:48 AM UTC-7, YADLA NIRANJAN
>>>>> wrote:
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> I have built x86_64 emulator from Google latest source code and as
>>>>>> well compiled goldfish kernel(3.10-m-dev) to generate
>>>>>> "./arch/x86_64/boot/bzImage"
>>>>>>
>>>>>> How to enable audio_offload?, want to enable
>>>>>> "AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD" flag in audio_policy.conf, however
>>>>>> I
>>>>>> could not find this file in /system/etc/
>>>>>> Assume somehow If we enable audio_offload on emulator build then I
>>>>>> want to know how to collect compressed audio data at kernel level(may be
>>>>>> at
>>>>>> compress_offload.c file ).
>>>>>>
>>>>>>
>>>>>> Build instructions:
>>>>>> Step1:Got the latest source code from
>>>>>> http://source.android.com/source/downloading.html
>>>>>> Built the emulator using below configuration on latest Android source
>>>>>> code
>>>>>>
>>>>>> ============================================
>>>>>> PLATFORM_VERSION_CODENAME=REL
>>>>>> PLATFORM_VERSION=5.1.51
>>>>>> TARGET_PRODUCT=aosp_x86_64
>>>>>> TARGET_BUILD_VARIANT=eng
>>>>>> TARGET_BUILD_TYPE=release
>>>>>> TARGET_BUILD_APPS=
>>>>>> TARGET_ARCH=x86_64
>>>>>> TARGET_ARCH_VARIANT=x86_64
>>>>>> TARGET_CPU_VARIANT=
>>>>>> TARGET_2ND_ARCH=x86
>>>>>> TARGET_2ND_ARCH_VARIANT=x86
>>>>>> TARGET_2ND_CPU_VARIANT=
>>>>>> HOST_ARCH=x86_64
>>>>>> HOST_OS=linux
>>>>>> HOST_OS_EXTRA=Linux-3.13.0-63-generic-x86_64-with-Ubuntu-14.04-trusty
>>>>>> HOST_CROSS_OS=windows
>>>>>> HOST_BUILD_TYPE=release
>>>>>> BUILD_ID=AOSP
>>>>>> OUT_DIR=out
>>>>>> ============================================
>>>>>> ran below command
>>>>>> $make -j8
>>>>>>
>>>>>>
>>>>>> Step2:Got kernel code using below command
>>>>>> git clone https://android.googlesource.com/kernel/goldfish.git
>>>>>> ran below cmds
>>>>>> $ make x86_64_emu_defconfig
>>>>>> $ make -j8
>>>>>>
>>>>>>
>>>>>>
>>>>>> Note:If we successfully be able to write compressed data to a file at
>>>>>> kernel level, this will allow us to achieve in simulating audio DSP on
>>>>>> emulator build.
>>>>>>
>>>>>> Thanks,
>>>>>> NY
>>>>>>
>>>>>
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