• Takashi Iwai's avatar
    ALSA: PCM: channel mapping API implementation · 2d3391ec
    Takashi Iwai authored
    This patch implements the basic data types for the standard channel
    mapping API handling.
    - The definitions of the channel positions and the new TLV types are
      added in sound/asound.h and sound/tlv.h, so that they can be
      referred from user-space.
    - Introduced a new helper function snd_pcm_add_chmap_ctls() to create
      control elements representing the channel maps for each PCM
    - Some standard pre-defined channel maps are provided for
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>