Evolution-X-Tensor/device_google_akita
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audio: fix the noise of raw-playback in 16kB page mode

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To fix the noise of raw-playback in 16KB page mode,
we change to use non-mmaped mode.

Bug: 355285548
Flag: EXEMPT : bugfix
Test: Local test, ABTD
Change-Id: Ie5acab613906c1fd0f1de285ca13654421b7870b
This commit is contained in:
millerliang 2024-08-24 08:36:55 +00:00
parent 2d9369c23c
commit 41caed926d
1 changed files with 2 additions and 2 deletions
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4
audio/akita/config/audio_platform_configuration.xml
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@ -173,8 +173,8 @@
</input_backend_cfg_mic_mapping> </input_backend_cfg_mic_mapping>
<usecase_attr> <usecase_attr>
<!-- for output with AUDIO_OUTPUT_FLAG_RAW, 32 periods * 64 frames(around 1.3ms) * 2ch * 4(s32) = 16384 bytes --> <!-- for output with AUDIO_OUTPUT_FLAG_RAW, 40 periods * 48 frames/period * 2ch * 4(s32) = 15360 bytes -->
<usecase id="UC_RAW_PLAYBACK" dev1="23" dyn_path="true" dsp_vol="false" mmap="true" period="64" period_num="32"/> <usecase id="UC_RAW_PLAYBACK" dev1="23" dyn_path="true" dsp_vol="false" mmap="false" period="48" period_num="40"/>
<!-- for output with AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST, 4 * 10ms buffer --> <!-- for output with AUDIO_OUTPUT_FLAG_PRIMARY|AUDIO_OUTPUT_FLAG_FAST, 4 * 10ms buffer -->
<usecase id="UC_LOW_LATENCY_PLAYBACK" dev1="1" dyn_path="true" dsp_vol="false" mmap="false" period="10" period_num="4"/> <usecase id="UC_LOW_LATENCY_PLAYBACK" dev1="1" dyn_path="true" dsp_vol="false" mmap="false" period="10" period_num="4"/>
<!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 40 periods * 48 frames/period(=1ms w/ 48k sample rate) * 2ch *4(float) = 15360 bytes --> <!-- for output with AUDIO_OUTPUT_FLAG_MMAP_NOIRQ, 40 periods * 48 frames/period(=1ms w/ 48k sample rate) * 2ch *4(float) = 15360 bytes -->