发布时间:2015-04-09 23:00:20
这里一直说ES9018是直解DSD的,俺今天认真了一把,查了一些资料。首先是ESS的官方文档,关于ES9018的:http://esstech.com/PDF/ES9018S%20PB%20v1.7%20140916.pdf里面那个结构图很有意思。左侧有一个模块叫做DSD/PCM Interface,听名字应该做的就是DSD/PCM的转换,这个模块和SPDIF并列位于OVERSAMPLING FILTER前端,.........【阅读全文】
发布时间:2015-02-14 02:45:27
/dev/snd/pcmC0D0c -->MultiMedia1-->msm-pcm-dsp-->msm-pcm-q6-v2.c PCM Record/dev/snd/pcmC0D0p -->MultiMedia1-->msm-pcm-dsp-->msm-pcm-q6-v2.c PCM PlayBack /dev/snd/pcmC0D2c -->CS-Voice-->msm-pcm-voice-->msm-pcm-q6-v2.c CS Voice TX/dev/snd/pcmC0D2p -->CS-Voice-->msm-pcm-voice-->msm-pcm-q6-v2.c .........【阅读全文】
发布时间:2015-01-05 00:34:31
AudioPolicyService/* * The audio_policy and audio_policy_service_ops structs define the * communication interfaces between the platform specific audio policy manager * and Android generic audio policy manager. * The platform specific audio policy manager must implement met.........【阅读全文】