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[media] coda: v4l2-compliance fix: implement try_decoder_cmd

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Implement try_decoder_cmd to let userspace determine available commands
and flags.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Philipp Zabel 2013-09-30 10:34:52 -03:00 committed by Mauro Carvalho Chehab
parent 5762559358
commit 64ba40accc
1 changed files with 20 additions and 8 deletions
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28
drivers/media/platform/coda.c
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@ -835,23 +835,34 @@ static int coda_streamoff(struct file *file, void *priv,
return ret;
}
static int coda_decoder_cmd(struct file *file, void *fh,
struct v4l2_decoder_cmd *dc)
static int coda_try_decoder_cmd(struct file *file, void *fh,
struct v4l2_decoder_cmd *dc)
{
struct coda_ctx *ctx = fh_to_ctx(fh);
if (dc->cmd != V4L2_DEC_CMD_STOP)
return -EINVAL;
if ((dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK) ||
(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY))
if (dc->flags & V4L2_DEC_CMD_STOP_TO_BLACK)
return -EINVAL;
if (dc->stop.pts != 0)
if (!(dc->flags & V4L2_DEC_CMD_STOP_IMMEDIATELY) && (dc->stop.pts != 0))
return -EINVAL;
return 0;
}
static int coda_decoder_cmd(struct file *file, void *fh,
struct v4l2_decoder_cmd *dc)
{
struct coda_ctx *ctx = fh_to_ctx(fh);
int ret;
ret = coda_try_decoder_cmd(file, fh, dc);
if (ret < 0)
return ret;
/* Ignore decoder stop command silently in encoder context */
if (ctx->inst_type != CODA_INST_DECODER)
return -EINVAL;
return 0;
/* Set the strem-end flag on this context */
ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
@ -894,6 +905,7 @@ static const struct v4l2_ioctl_ops coda_ioctl_ops = {
.vidioc_streamon = coda_streamon,
.vidioc_streamoff = coda_streamoff,
.vidioc_try_decoder_cmd = coda_try_decoder_cmd,
.vidioc_decoder_cmd = coda_decoder_cmd,
.vidioc_subscribe_event = coda_subscribe_event,