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@xxxxxxxxxxx>
---
drivers/media/platform/s5p-mfc/s5p_mfc_enc.c | 42 ++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
index 41f3b7f..b45cccc 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)
@@ -1640,8 +1650,40 @@ 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,
--
1.7.9.5
--
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