linux-kernel - [PATCH v2 0/9] ASoC: qdsp6: add gapless compressed audio support

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Date:   Tue, 21 Jul 2020 17:52:57 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org
Cc:     vkoul@...nel.org, perex@...ex.cz, tiwai@...e.com,
        lgirdwood@...il.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, ckeepax@...nsource.cirrus.com,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v2 0/9] ASoC: qdsp6: add gapless compressed audio support

This patchset adds gapless compressed audio support on q6asm.
Gapless on q6asm is implemented using 2 streams in a single q6asm session.

First few patches such as stream id per each command, gapless flags
and silence meta data are for preparedness for adding gapless support.
Last patch implements copy callback to allow finer control over buffer offsets,
specially in partial drain cases.

This patchset is tested on RB3 aka DB845c platform.

This patchset as it is will support gapless however QDSP can also
support switching decoders on a single stream. Patches to support such feature
are send in different patchset which involves adding generic interfaces.

Thanks,
srini

Changes since v1:
 - Fixed all the comments to use "q6asm" wording correctly.
 - dropped patches that are already applied

Srinivas Kandagatla (9):
  ASoC: q6asm: rename misleading session id variable
  ASoC: q6asm: make commands specific to streams
  ASoC: q6asm: use flags directly from q6asm-dai
  ASoC: q6asm: add length to write command token
  ASoC: q6asm: add support to remove intial and trailing silence
  ASoC: q6asm: add support to gapless flag in q6asm open
  ASoC: q6asm-dai: add next track metadata support
  ASoC: qdsp6-dai: add gapless support
  ASoC: q6asm-dai: add support to copy callback

 sound/soc/qcom/qdsp6/q6asm-dai.c | 413 +++++++++++++++++++++++--------
 sound/soc/qcom/qdsp6/q6asm.c     | 169 +++++++++----
 sound/soc/qcom/qdsp6/q6asm.h     |  48 ++--
 3 files changed, 467 insertions(+), 163 deletions(-)

-- 
2.21.0