On 1/18/24 11:59, Sachin Kumar Garg wrote:
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>
---
drivers/media/platform/qcom/venus/hfi_cmds.c | 38 +++++++++++++------
.../media/platform/qcom/venus/hfi_helper.h | 1 +
drivers/media/platform/qcom/venus/venc.c | 2 +
.../media/platform/qcom/venus/venc_ctrls.c | 5 ++-
4 files changed, 33 insertions(+), 13 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/hfi_cmds.c b/drivers/media/platform/qcom/venus/hfi_cmds.c
index 3418d2dd9371..95fc27e0dc7d 100644
--- a/drivers/media/platform/qcom/venus/hfi_cmds.c
+++ b/drivers/media/platform/qcom/venus/hfi_cmds.c
@@ -645,17 +645,33 @@ static int pkt_session_set_property_1x(struct hfi_session_set_property_pkt *pkt,
case HFI_PROPERTY_PARAM_VENC_RATE_CONTROL: {
u32 *in = pdata;
- switch (*in) {
- case HFI_RATE_CONTROL_OFF:
- case HFI_RATE_CONTROL_CBR_CFR:
- case HFI_RATE_CONTROL_CBR_VFR:
- case HFI_RATE_CONTROL_VBR_CFR:
- case HFI_RATE_CONTROL_VBR_VFR:
- case HFI_RATE_CONTROL_CQ:
- break;
- default:
- ret = -EINVAL;
- break;
+ if (hfi_ver == HFI_VERSION_4XX) {
So, only sdm845/sc7180 and friends support it, but the newer
SoCs (like 8250 don't)?
[...]
--- 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,
Is this okay, since you're claiming only v4 supports it?
Konrad
