From: Adam Miartus <amiartus@de.adit-jv.com>
To: patch@alsa-project.org
Cc: alsa-devel@alsa-project.org
Subject: [PATCH - alsa-lib 0/4] Add pcm_file input file support for MMAP
Date: Tue, 21 May 2019 15:32:26 +0200 [thread overview]
Message-ID: <1558445546-11437-1-git-send-email-amiartus@de.adit-jv.com> (raw)
implement overwriting read buffer with input file in case of
RW_NONINTERLEAVED and MMAP access modes for alsa file plugin
first two patches introduce a helper function for copying data from
input file to readi and readn buffers for user. to facilitate this
snd_pcm_areas_from_buf and snd_pcm_areas_from_bufs with
snd_pcm_areas_copy is used. Previous readi behaviour in corner
case of input file EOF is changed (more in patch comment).
Patch 3,4 introduce new api callback mmap_begin to ease overwritting
mmaped buffer in case of MMAP access.
Adam Miartus (4):
pcm_file: add support for infile reading in non interleaved mode
pcm_file: use snd_pcm_file_areas_read_infile for readi
pcm: add mmap_begin callback to snd_pcm_fast_ops_t api
pcm_file: add infile read support for mmap mode
src/pcm/pcm.c | 6 +++
src/pcm/pcm_dmix.c | 1 +
src/pcm/pcm_dshare.c | 1 +
src/pcm/pcm_dsnoop.c | 1 +
src/pcm/pcm_file.c | 125 ++++++++++++++++++++++++++++++++++++++----------
src/pcm/pcm_generic.h | 1 -
src/pcm/pcm_hooks.c | 1 +
src/pcm/pcm_hw.c | 2 +
src/pcm/pcm_ioplug.c | 1 +
src/pcm/pcm_local.h | 1 +
src/pcm/pcm_meter.c | 1 +
src/pcm/pcm_mmap_emul.c | 1 +
src/pcm/pcm_multi.c | 1 +
src/pcm/pcm_null.c | 1 +
src/pcm/pcm_plugin.c | 1 +
src/pcm/pcm_rate.c | 1 +
src/pcm/pcm_share.c | 1 +
src/pcm/pcm_shm.c | 1 +
18 files changed, 122 insertions(+), 26 deletions(-)
--
2.7.4
next reply other threads:[~2019-05-21 13:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-21 13:32 Adam Miartus [this message]
2019-05-22 14:25 ` [ALSA patch] [PATCH - alsa-lib 0/4] Add pcm_file input file support for MMAP Takashi Iwai
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