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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