lkml.org 
[lkml]   [2020]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC PATCH v2 0/6] ALSA: compress: add support to change codec profile in gapless playback
    On Tue, 21 Jul 2020 19:00:01 +0200,
    Srinivas Kandagatla wrote:
    >
    > For gapless playback it is possible that each track can have different
    > codec profile with same decoder, for example we have WMA album,
    > we may have different tracks as WMA v9, WMA v10 and so on
    > Or if DSP's like QDSP have abililty to switch decoders on single stream
    > for each track, then this call could be used to set new codec parameters.
    >
    > Existing code does not allow to change this profile while doing gapless
    > playback.
    >
    > This patchset adds new SNDRV_COMPRESS_SET_CODEC_PARAMS IOCTL along with
    > flags in capablity structure to allow userspace to set this new
    > parameters required which switching codec profile, either for gapless
    > or cross fade usecase.

    One idea that came up at the previous audio conference regarding this
    implementation was to just allow SET_PARAMS during the stream is
    running (only if the driver sets the capability) instead of
    introducing yet a new ioctl and an ops.
    Would it make sense?

    I have no big objection to add a new ioctl if other people agree,
    though.


    thanks,

    Takashi

    \
     
     \ /
      Last update: 2020-07-23 14:39    [W:3.165 / U:0.656 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site