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| author |   Kiran AVND <avnd.kiran@samsung.com> | 2014-10-21 08:06:55 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-10-28 15:41:47 -0200 |
| commit | c4b1ce051e1f5c1e82cf25f35e24460a9ece993c (patch) | |
| tree | d887b68304b1f6ae23de10772fcc366fc0968ce9 /drivers/media/platform/s5p-mfc | |
| parent | [media] coda: drop JPEG buffers not framed by SOI and EOI markers (diff) | |
| download | linux-dev-c4b1ce051e1f5c1e82cf25f35e24460a9ece993c.tar.xz linux-dev-c4b1ce051e1f5c1e82cf25f35e24460a9ece993c.zip | |
[media] s5p-mfc: support MIN_BUFFERS query for encoder
Add V4L2_CID_MIN_BUFFERS_FOR_OUTPUT query for encoder.
Once mfc encoder state is HEAD_PARSED, which is sequence
header produced, dpb_count is avaialable. Let user space
query this value.
Signed-off-by: Kiran AVND <avnd.kiran@samsung.com>
Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform/s5p-mfc')
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_enc.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c index a904a1c7bb21..4816f31acf68 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c @@ -690,6 +690,16 @@ static struct mfc_control controls[] = { .step = 1, .default_value = 0, }, + { + .id = V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Minimum number of output bufs", + .minimum = 1, + .maximum = 32, + .step = 1, + .default_value = 1, + .is_volatile = 1, + }, }; #define NUM_CTRLS ARRAY_SIZE(controls) @@ -1624,8 +1634,40 @@ static int s5p_mfc_enc_s_ctrl(struct v4l2_ctrl *ctrl) return ret; } +static int s5p_mfc_enc_g_v_ctrl(struct v4l2_ctrl *ctrl) +{ + struct s5p_mfc_ctx *ctx = ctrl_to_ctx(ctrl); + struct s5p_mfc_dev *dev = ctx->dev; + + switch (ctrl->id) { + case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: + if (ctx->state >= MFCINST_HEAD_PARSED && + ctx->state < MFCINST_ABORT) { + ctrl->val = ctx->pb_count; + break; + } else if (ctx->state != MFCINST_INIT) { + v4l2_err(&dev->v4l2_dev, "Encoding not initialised\n"); + return -EINVAL; + } + /* Should wait for the header to be produced */ + s5p_mfc_clean_ctx_int_flags(ctx); + s5p_mfc_wait_for_done_ctx(ctx, + S5P_MFC_R2H_CMD_SEQ_DONE_RET, 0); + if (ctx->state >= MFCINST_HEAD_PARSED && + ctx->state < MFCINST_ABORT) { + ctrl->val = ctx->pb_count; + } else { + v4l2_err(&dev->v4l2_dev, "Encoding not initialised\n"); + return -EINVAL; + } + break; + } + return 0; +} + static const struct v4l2_ctrl_ops s5p_mfc_enc_ctrl_ops = { .s_ctrl = s5p_mfc_enc_s_ctrl, + .g_volatile_ctrl = s5p_mfc_enc_g_v_ctrl, }; static int vidioc_s_parm(struct file *file, void *priv, |