This series add the encoder controls for long term reference (LTR)
and support for the same in venus driver.
Dikshita Agarwal (2):
media: v4l2-ctrl: add controls for long term reference.
venus: venc: Add support for Long Term Reference (LTR) controls
Changes since v8:
- Update 2/2 patch to allow LTR MARK and USE control setting
only after stream on.
.../userspace-api/media/v4l/ext-ctrls-codec.rst | 18 +++++++
drivers/media/platform/qcom/venus/venc_ctrls.c | 55 +++++++++++++++++++++-
drivers/media/v4l2-core/v4l2-ctrls.c | 14 ++++++
include/uapi/linux/v4l2-controls.h | 3 ++
4 files changed, 89 insertions(+), 1 deletion(-)
--
2.7.4
Add support for below LTR controls in encoder:
- V4L2_CID_MPEG_VIDEO_LTR_COUNT
- V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX
- V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES
Signed-off-by: Dikshita Agarwal <[email protected]>
---
drivers/media/platform/qcom/venus/venc_ctrls.c | 55 +++++++++++++++++++++++++-
1 file changed, 54 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/qcom/venus/venc_ctrls.c b/drivers/media/platform/qcom/venus/venc_ctrls.c
index a52b800..bb4261b 100644
--- a/drivers/media/platform/qcom/venus/venc_ctrls.c
+++ b/drivers/media/platform/qcom/venus/venc_ctrls.c
@@ -20,6 +20,7 @@
#define INTRA_REFRESH_MBS_MAX 300
#define AT_SLICE_BOUNDARY \
V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY
+#define MAX_LTR_FRAME_COUNT 4
static int venc_calc_bpframes(u32 gop_size, u32 conseq_b, u32 *bf, u32 *pf)
{
@@ -72,6 +73,9 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
struct venc_controls *ctr = &inst->controls.enc;
struct hfi_enable en = { .enable = 1 };
struct hfi_bitrate brate;
+ struct hfi_ltr_use ltr_use;
+ struct hfi_ltr_mark ltr_mark;
+ struct hfi_ltr_mode ltr_mode;
u32 bframes;
u32 ptype;
int ret;
@@ -276,6 +280,43 @@ static int venc_op_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID:
ctr->base_priority_id = ctrl->val;
break;
+ case V4L2_CID_MPEG_VIDEO_LTR_COUNT:
+ ptype = HFI_PROPERTY_PARAM_VENC_LTRMODE;
+ ltr_mode.ltr_count = ctrl->val;
+ ltr_mode.ltr_mode = HFI_LTR_MODE_MANUAL;
+ ltr_mode.trust_mode = 1;
+ ret = hfi_session_set_property(inst, ptype, <r_mode);
+ if (ret)
+ return ret;
+ break;
+ case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:
+ mutex_lock(&inst->lock);
+ if (inst->streamon_out && inst->streamon_cap) {
+ ptype = HFI_PROPERTY_CONFIG_VENC_MARKLTRFRAME;
+ ltr_mark.mark_frame = ctrl->val;
+ ret = hfi_session_set_property(inst, ptype, <r_mark);
+ if (ret) {
+ mutex_unlock(&inst->lock);
+ return ret;
+ }
+ }
+ mutex_unlock(&inst->lock);
+ break;
+ case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:
+ mutex_lock(&inst->lock);
+ if (inst->streamon_out && inst->streamon_cap) {
+ ptype = HFI_PROPERTY_CONFIG_VENC_USELTRFRAME;
+ ltr_use.ref_ltr = ctrl->val;
+ ltr_use.use_constrnt = true;
+ ltr_use.frames = 0;
+ ret = hfi_session_set_property(inst, ptype, <r_use);
+ if (ret) {
+ mutex_unlock(&inst->lock);
+ return ret;
+ }
+ }
+ mutex_unlock(&inst->lock);
+ break;
default:
return -EINVAL;
}
@@ -291,7 +332,7 @@ int venc_ctrl_init(struct venus_inst *inst)
{
int ret;
- ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 51);
+ ret = v4l2_ctrl_handler_init(&inst->ctrl_handler, 54);
if (ret)
return ret;
@@ -498,6 +539,18 @@ int venc_ctrl_init(struct venus_inst *inst)
V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID, 0,
6, 1, 0);
+ v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES, 0,
+ (MAX_LTR_FRAME_COUNT - 1), 1, 0);
+
+ v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_LTR_COUNT, 0,
+ MAX_LTR_FRAME_COUNT, 1, 0);
+
+ v4l2_ctrl_new_std(&inst->ctrl_handler, &venc_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX, 0,
+ (MAX_LTR_FRAME_COUNT - 1), 1, 0);
+
ret = inst->ctrl_handler.error;
if (ret)
goto err;
--
2.7.4
Long Term Reference (LTR) frames are the frames that are encoded
sometime in the past and stored in the DPB buffer list to be used
as reference to encode future frames.
This change adds controls to enable this feature.
Signed-off-by: Dikshita Agarwal <[email protected]>
Reviewed-by: Hans Verkuil <[email protected]>
---
.../userspace-api/media/v4l/ext-ctrls-codec.rst | 18 ++++++++++++++++++
drivers/media/v4l2-core/v4l2-ctrls.c | 14 ++++++++++++++
include/uapi/linux/v4l2-controls.h | 3 +++
3 files changed, 35 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 00944e9..be81bd9 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -3646,3 +3646,21 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
so this has to come from client.
This is applicable to H264 and valid Range is from 0 to 63.
Source Rec. ITU-T H.264 (06/2019); G.7.4.1.1, G.8.8.1.
+
+``V4L2_CID_MPEG_VIDEO_LTR_COUNT (integer)``
+ Specifies the maximum number of Long Term Reference (LTR) frames at any
+ given time that the encoder can keep.
+ This is applicable to the H264 and HEVC encoders.
+
+``V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX (integer)``
+ After setting this control the frame that will be queued next
+ will be marked as a Long Term Reference (LTR) frame
+ and given this LTR index which ranges from 0 to LTR_COUNT-1.
+ This is applicable to the H264 and HEVC encoders.
+ Source Rec. ITU-T H.264 (06/2019); Table 7.9
+
+``V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES (bitmask)``
+ Specifies the Long Term Reference (LTR) frame(s) to be used for
+ encoding the next frame queued after setting this control.
+ This provides a bitmask which consists of bits [0, LTR_COUNT-1].
+ This is applicable to the H264 and HEVC encoders.
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 016cf62..4d444de 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -951,6 +951,9 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header";
case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame";
case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID: return "Base Layer Priority ID";
+ case V4L2_CID_MPEG_VIDEO_LTR_COUNT: return "LTR Count";
+ case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX: return "Frame LTR Index";
+ case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES: return "Use LTR Frames";
case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS: return "MPEG-2 Slice Parameters";
case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION: return "MPEG-2 Quantization Matrices";
case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value";
@@ -1278,6 +1281,17 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:
*type = V4L2_CTRL_TYPE_INTEGER;
break;
+ case V4L2_CID_MPEG_VIDEO_LTR_COUNT:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ break;
+ case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ break;
+ case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:
+ *type = V4L2_CTRL_TYPE_BITMASK;
+ *flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+ break;
case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
case V4L2_CID_PAN_RESET:
case V4L2_CID_TILT_RESET:
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 039c0d7..fedbb54 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -428,6 +428,9 @@ enum v4l2_mpeg_video_multi_slice_mode {
#define V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE (V4L2_CID_CODEC_BASE+228)
#define V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME (V4L2_CID_CODEC_BASE+229)
#define V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID (V4L2_CID_CODEC_BASE+230)
+#define V4L2_CID_MPEG_VIDEO_LTR_COUNT (V4L2_CID_CODEC_BASE+231)
+#define V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX (V4L2_CID_CODEC_BASE+232)
+#define V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES (V4L2_CID_CODEC_BASE+233)
/* CIDs for the MPEG-2 Part 2 (H.262) codec */
#define V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL (V4L2_CID_CODEC_BASE+270)
--
2.7.4