[alsa-devel] [alsa-lib][PATCH v3 0/4] add SNDRV_PCM_FORMAT_{S, U}20

Maciej S. Szmigiero mail at maciej.szmigiero.name
Thu Dec 14 14:50:49 CET 2017


This format is similar to an existing 20-bit PCM format
SNDRV_PCM_FORMAT_{S,U}20_3, however it occupies 4 bytes instead of 3.

Changes from v1: Split the monolithic submission into separate
commits. (Note that v2 wasn't tagged as such.)

Changes from v2: Add commas at the end of two possible last entries of
the snd_pcm_format_t enum so diffs will be more readable when new PCM
formats are added in the future, remove asserts from
snd_pcm_linear_{get,put}_index().

Maciej S. Szmigiero (4):
  asound.h: add SNDRV_PCM_FORMAT_{S,U}20
  pcm: add and describe SND_PCM_FORMAT_{S,U}20
  pcm: linear, route: handle linear formats with 20-bit sample on 4
    bytes
  pcm: plug: add SND_PCM_FORMAT_{S,U}20 to linear_preferred_formats

 include/pcm.h          | 20 ++++++++++++++++++--
 include/sound/asound.h |  9 +++++++++
 src/pcm/pcm.c          | 10 ++++++++++
 src/pcm/pcm_linear.c   | 14 +++++++++++---
 src/pcm/pcm_local.h    |  4 ++++
 src/pcm/pcm_misc.c     | 41 ++++++++++++++++++++++++++++++++++++++---
 src/pcm/pcm_plug.c     | 11 +++++++++++
 src/pcm/pcm_route.c    |  6 ++++--
 src/pcm/plugin_ops.h   | 50 ++++++++++++++++++++++++++++++++++++++++++++++----
 9 files changed, 151 insertions(+), 14 deletions(-)


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