There is no limit on the maximum level of the bit rate with
the existing VBR rate control.
V4L2_MPEG_VIDEO_BITRATE_MODE_MBR rate control will limit the
frame maximum bit rate range to the +/- 10% of the configured
bit-rate value. Encoder will choose appropriate quantization
parameter and do the smart bit allocation to set the frame
maximum bitrate level.
Signed-off-by: Sachin Kumar Garg <quic_sachinku@xxxxxxxxxxx>
---
Changes since v1:
- Addressed comment related to code replication
- Addressed comment for handling of MBR RC for non supported SOCs
drivers/media/platform/qcom/venus/hfi_cmds.c | 7 +++++++
drivers/media/platform/qcom/venus/hfi_helper.h | 1 +
drivers/media/platform/qcom/venus/venc.c | 2 ++
drivers/media/platform/qcom/venus/venc_ctrls.c | 5 +++--
4 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.c b/drivers/media/platform/qcom/venus/hfi_cmds.c
index 3418d2dd9371..b6a9e8b54fe1 100644
--- a/drivers/media/platform/qcom/venus/hfi_cmds.c
+++ b/drivers/media/platform/qcom/venus/hfi_cmds.c
@@ -653,6 +653,13 @@ static int pkt_session_set_property_1x(struct hfi_session_set_property_pkt *pkt,
case HFI_RATE_CONTROL_VBR_VFR:
case HFI_RATE_CONTROL_CQ:
break;
+ case HFI_RATE_CONTROL_MBR_CFR:
+ if (hfi_ver == HFI_VERSION_4XX) {
+ break;
+ } else {
+ ret = -ENOTSUPP;
+ break;
+ }
default:
ret = -EINVAL;
break;
diff --git a/drivers/media/platform/qcom/venus/hfi_helper.h b/drivers/media/platform/qcom/venus/hfi_helper.h
index e4c05d62cfc7..a0fd857f5c4b 100644
--- a/drivers/media/platform/qcom/venus/hfi_helper.h
+++ b/drivers/media/platform/qcom/venus/hfi_helper.h
@@ -232,6 +232,7 @@
#define HFI_RATE_CONTROL_VBR_CFR 0x1000003
#define HFI_RATE_CONTROL_CBR_VFR 0x1000004
#define HFI_RATE_CONTROL_CBR_CFR 0x1000005
+#define HFI_RATE_CONTROL_MBR_CFR 0x1000006
#define HFI_RATE_CONTROL_CQ 0x1000008
#define HFI_VIDEO_CODEC_H264 0x00000002
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 3ec2fb8d9fab..8acbb05f6ce8 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -807,6 +807,8 @@ static int venc_set_properties(struct venus_inst *inst)
HFI_RATE_CONTROL_CBR_CFR;
else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_CQ)
rate_control = HFI_RATE_CONTROL_CQ;
+ else if (ctr->bitrate_mode == V4L2_MPEG_VIDEO_BITRATE_MODE_MBR)
+ rate_control = HFI_RATE_CONTROL_MBR_CFR;
ptype = HFI_PROPERTY_PARAM_VENC_RATE_CONTROL;
ret = hfi_session_set_property(inst, ptype, &rate_control);
diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
index d9d2a293f3ef..c9c3b1b45525 100644
--- a/drivers/media/platform/qcom/venus/venc_ctrls.c
+++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
@@ -387,10 +387,11 @@ int venc_ctrl_init(struct venus_inst *inst)
v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
- V4L2_MPEG_VIDEO_BITRATE_MODE_CBR,
+ V4L2_MPEG_VIDEO_BITRATE_MODE_MBR,
~((1 << V4L2_MPEG_VIDEO_BITRATE_MODE_VBR) |
(1 << V4L2_MPEG_VIDEO_BITRATE_MODE_CBR) |
- (1 << V4L2_MPEG_VIDEO_BITRATE_MODE_CQ)),
+ (1 << V4L2_MPEG_VIDEO_BITRATE_MODE_CQ) |
+ (1 << V4L2_MPEG_VIDEO_BITRATE_MODE_MBR)),
V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
v4l2_ctrl_new_std_menu(&inst->ctrl_handler, &venc_ctrl_ops,
--
2.34.1
