On Tue, 13 Dec 2016 00:06:56 +0100, Takashi Sakamoto wrote: > > Hi, > > On Dec 13 2016 06:36, Takashi Iwai wrote: > > On Sun, 11 Dec 2016 12:31:38 +0100, > > Takashi Sakamoto wrote: > >> > >> In a design of ALSA PCM interface, for PCM frame transmission to/from > >> kernel space, applications can select from two options; direct memory access > >> or ioctl(2). Available options are decided depending on device capacity and > >> machine architecture. Applications can get available options by the first > >> entry of 'struct snd_pcm_hw_params.masks'. > >> > >> When the mask includes 'SNDRV_PCM_ACCESS_MMAP_xxx', applications can use > >> direct memory access. For this use case, userspace library has two types > >> of PCM API. One is to expose a pointer over the memory to start > >> reading/writing PCM frames. Another is to copy PCM frames between the > >> memory and a given buffer. > >> > >> Current documentation includes wrong references to these APIs to describe > >> their advantages/disadvantages. This confuses application developers > >> because the references indicate PCM APIs to execute ioctl(2) operation to > >> read/write PCM frames. > >> > >> This commit fixes the bug. > >> > >> Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx> > > > > Applied, thanks. > > Thanks. > > Additionally, I'm pleased if you apply below patches to fix some > compiler warnings which topology features recently got. I guess Intel > developers are under their holidays. I leave these, as they are basically harmless. I'll take once when I get acks from Intel people. thanks, Takashi > [PATCH][alsa-lib] topology: fix sign-compare warning > introduced to set_link_hw_config() and tplg_add_link_object() > http://mailman.alsa-project.org/pipermail/alsa-devel/2016-November/115245.html > > [PATCH][alsa-lib] topology: fix unused-variable warnings > introduced to build_link() > http://mailman.alsa-project.org/pipermail/alsa-devel/2016-November/115246.html > > [PATCH][alsa-lib] topology: fix unused-const-variable warning > http://mailman.alsa-project.org/pipermail/alsa-devel/2016-November/115247.html > > > Regards > > Takashi Sakamoto > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
