diff options
| author | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2019-05-29 09:45:59 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-06-05 15:50:13 +0300 |
| commit | ef732d5e2813ff5ef30cdb280b2d133e74213555 (patch) | |
| tree | f264fc4a5ba5d4b1ec51e2da9d78a2c2991692ab /drivers/media | |
| parent | ad2220aa4591f3a25705b2d44f8a518d19346433 (diff) | |
| download | linux-ef732d5e2813ff5ef30cdb280b2d133e74213555.tar.xz | |
media: v4l2-mem2mem: add try_en/decoder_cmd ioctl helpers
Most if not all codecs will need to implement these ioctls and
it is expected to be the same for all codecs. So add this to
the core v4l2-mem2mem framework so that this code can easily be
reused.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 3392833d9541..498044a0cb4e 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -1122,6 +1122,35 @@ int v4l2_m2m_ioctl_streamoff(struct file *file, void *priv, } EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_streamoff); +int v4l2_m2m_ioctl_try_encoder_cmd(struct file *file, void *fh, + struct v4l2_encoder_cmd *ec) +{ + if (ec->cmd != V4L2_ENC_CMD_STOP && ec->cmd != V4L2_ENC_CMD_START) + return -EINVAL; + + ec->flags = 0; + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_try_encoder_cmd); + +int v4l2_m2m_ioctl_try_decoder_cmd(struct file *file, void *fh, + struct v4l2_decoder_cmd *dc) +{ + if (dc->cmd != V4L2_DEC_CMD_STOP && dc->cmd != V4L2_DEC_CMD_START) + return -EINVAL; + + dc->flags = 0; + + if (dc->cmd == V4L2_DEC_CMD_STOP) { + dc->stop.pts = 0; + } else if (dc->cmd == V4L2_DEC_CMD_START) { + dc->start.speed = 0; + dc->start.format = V4L2_DEC_START_FMT_NONE; + } + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_try_decoder_cmd); + /* * v4l2_file_operations helpers. It is assumed here same lock is used * for the output and the capture buffer queue. |