ALSA driver--Asoc
https://blog.csdn.net/zyuanyun/article/details/59170418 https://blog.csdn.net/whshiyun/article/details/80889838 ALSA Asoc框架如下圖： Asoc分為machine ...
原文：ALSA driver--HW Buffer
當app在調用snd pcm writei時，alsa core將app傳來的數據搬到HW buffer 即DMA buffer 中，alsa driver從HW buffer中讀取數據傳輸到硬件播放。 ALSA buffer是采用ring buffer來實現的。ring buffer有多個HW buffer組成。 HW buffer一般是在alsa driver的hw params函數中分配的一 ...
2016-12-20 20:21 0 1861 推薦指數：
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https://www.kernel.org/doc/html/v4.11/sound/soc/dpcm.html Description Dynamic PCM allows an ALSA PCM device to digitally route its PCM audio ...
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ALSA driver--PCM實例創建框架
snd_mychip_playback_hw = { .info = (SNDRV_PCM_INFO_MMAP | ...
HW
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