Hi,
On Dec 14 2017 22:50, Maciej S. Szmigiero wrote:
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(-)
I reviewed all of these four patches.
Reviewed-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
I found some minor issues in current implementation of linear
interpolation in alsa-lib.
* 'src/pcm/plugin_ops.h' includes some unused macros:
* COPY_LABELS/COPY_END
* GETU_LABELS/GETU_END
* NORMS_LABELS/NORMS_END
* 'put32_labels' includes wrong comments for 18/20 bits formats.
* A reorder of entries in below tables may allow us to simplify
implementation of snd_pcm_linear_get_index() and
snd_pcm_linear_put_index().
* get16_labels
* put16_labels
* get32_labels
* put32_labels
Anyway, the above issues are irrelevant to your patchset. Your work
can be merged to alsa-lib independently.
Thanks
Takashi Sakamoto
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