Add a control V4L2_CID_MPEG_VIDEO_AVERAGE_QP to report the average qp
value of current encoded frame. the value applies to the last dequeued
capture buffer.
Signed-off-by: Ming Qian <[email protected]>
---
v3
- document the valid range of the new ctrl
v2
- improve document description according Hans's comments
- drop volatile flag
.../userspace-api/media/v4l/ext-ctrls-codec.rst | 14 ++++++++++++++
drivers/media/v4l2-core/v4l2-ctrls-defs.c | 5 +++++
include/uapi/linux/v4l2-controls.h | 2 ++
3 files changed, 21 insertions(+)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 2a165ae063fb..4a379bd9e3fb 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -1653,6 +1653,20 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
Quantization parameter for a P frame for FWHT. Valid range: from 1
to 31.
+``V4L2_CID_MPEG_VIDEO_AVERAGE_QP (integer)``
+ This read-only control returns the average QP value of the currently
+ encoded frame. The value applies to the last dequeued capture buffer
+ (VIDIOC_DQBUF). Its valid range depends on the encoding format and parameters.
+ For H264, its valid range is from 0 to 51.
+ For HEVC, its valid range is from 0 to 51 for 8 bit and
+ from 0 to 63 for 10 bit.
+ For H263 and MPEG4, its valid range is from 1 to 31.
+ For VP8, its valid range is from 0 to 127.
+ For VP9, its valid range is from 0 to 255.
+ If the codec's MIN_QP and MAX_QP are set, then the QP will meet both requirements.
+ Codecs need to always use the specified range, rather then a HW custom range.
+ Applicable to encoders
+
.. raw:: latex
\normalsize
diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
index 8696eb1cdd61..1ea52011247a 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
@@ -970,6 +970,7 @@ const char *v4l2_ctrl_get_name(u32 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_AVERAGE_QP: return "Average QP Value";
case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value";
case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value";
@@ -1507,6 +1508,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
*max = 0xffffffffffffLL;
*step = 1;
break;
+ case V4L2_CID_MPEG_VIDEO_AVERAGE_QP:
+ *type = V4L2_CTRL_TYPE_INTEGER;
+ *flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ break;
case V4L2_CID_PIXEL_RATE:
*type = V4L2_CTRL_TYPE_INTEGER64;
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 99c3f5e99da7..974fd254e573 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -898,6 +898,8 @@ enum v4l2_mpeg_video_av1_level {
V4L2_MPEG_VIDEO_AV1_LEVEL_7_3 = 23
};
+#define V4L2_CID_MPEG_VIDEO_AVERAGE_QP (V4L2_CID_CODEC_BASE + 657)
+
/* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
#define V4L2_CID_CODEC_CX2341X_BASE (V4L2_CTRL_CLASS_CODEC | 0x1000)
#define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_CODEC_CX2341X_BASE+0)
--
2.43.0-rc1
Report the average QP value of current encoded frame via the control
V4L2_CID_MPEG_VIDEO_AVERAGE_QP, the value applies to the last dequeued
capture buffer.
Signed-off-by: Ming Qian <[email protected]>
---
v3
- adjust patch order
v2
- drop the volatile flag
drivers/media/platform/amphion/venc.c | 4 ++++
drivers/media/platform/amphion/vpu.h | 1 +
drivers/media/platform/amphion/vpu_defs.h | 1 +
drivers/media/platform/amphion/vpu_v4l2.c | 16 ++++++++++++++++
drivers/media/platform/amphion/vpu_v4l2.h | 1 +
drivers/media/platform/amphion/vpu_windsor.c | 2 ++
6 files changed, 25 insertions(+)
diff --git a/drivers/media/platform/amphion/venc.c b/drivers/media/platform/amphion/venc.c
index 16ed4d21519c..351b4edc8742 100644
--- a/drivers/media/platform/amphion/venc.c
+++ b/drivers/media/platform/amphion/venc.c
@@ -678,6 +678,9 @@ static int venc_ctrl_init(struct vpu_inst *inst)
~(1 << V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME),
V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
+ v4l2_ctrl_new_std(&inst->ctrl_handler, NULL,
+ V4L2_CID_MPEG_VIDEO_AVERAGE_QP, 0, 51, 1, 0);
+
if (inst->ctrl_handler.error) {
ret = inst->ctrl_handler.error;
v4l2_ctrl_handler_free(&inst->ctrl_handler);
@@ -817,6 +820,7 @@ static int venc_get_one_encoded_frame(struct vpu_inst *inst,
vbuf->field = inst->cap_format.field;
vbuf->flags |= frame->info.pic_type;
vpu_set_buffer_state(vbuf, VPU_BUF_STATE_IDLE);
+ vpu_set_buffer_average_qp(vbuf, frame->info.average_qp);
dev_dbg(inst->dev, "[%d][OUTPUT TS]%32lld\n", inst->id, vbuf->vb2_buf.timestamp);
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_DONE);
venc->ready_count++;
diff --git a/drivers/media/platform/amphion/vpu.h b/drivers/media/platform/amphion/vpu.h
index 0246cf0ac3a8..22f0da26ccec 100644
--- a/drivers/media/platform/amphion/vpu.h
+++ b/drivers/media/platform/amphion/vpu.h
@@ -306,6 +306,7 @@ struct vpu_vb2_buffer {
dma_addr_t chroma_v;
unsigned int state;
u32 tag;
+ u32 average_qp;
};
void vpu_writel(struct vpu_dev *vpu, u32 reg, u32 val);
diff --git a/drivers/media/platform/amphion/vpu_defs.h b/drivers/media/platform/amphion/vpu_defs.h
index 7320852668d6..428d988cf2f7 100644
--- a/drivers/media/platform/amphion/vpu_defs.h
+++ b/drivers/media/platform/amphion/vpu_defs.h
@@ -114,6 +114,7 @@ struct vpu_enc_pic_info {
u32 wptr;
u32 crc;
s64 timestamp;
+ u32 average_qp;
};
struct vpu_dec_codec_info {
diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index c88738e8fff7..83db57bc80b7 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -63,6 +63,13 @@ unsigned int vpu_get_buffer_state(struct vb2_v4l2_buffer *vbuf)
return vpu_buf->state;
}
+void vpu_set_buffer_average_qp(struct vb2_v4l2_buffer *vbuf, u32 qp)
+{
+ struct vpu_vb2_buffer *vpu_buf = to_vpu_vb2_buffer(vbuf);
+
+ vpu_buf->average_qp = qp;
+}
+
void vpu_v4l2_set_error(struct vpu_inst *inst)
{
vpu_inst_lock(inst);
@@ -539,6 +546,15 @@ static void vpu_vb2_buf_finish(struct vb2_buffer *vb)
struct vpu_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_queue *q = vb->vb2_queue;
+ if (V4L2_TYPE_IS_CAPTURE(vb->type)) {
+ struct vpu_vb2_buffer *vpu_buf = to_vpu_vb2_buffer(vbuf);
+ struct v4l2_ctrl *ctrl = v4l2_ctrl_find(&inst->ctrl_handler,
+ V4L2_CID_MPEG_VIDEO_AVERAGE_QP);
+
+ if (ctrl)
+ v4l2_ctrl_s_ctrl(ctrl, vpu_buf->average_qp);
+ }
+
if (vbuf->flags & V4L2_BUF_FLAG_LAST)
vpu_notify_eos(inst);
diff --git a/drivers/media/platform/amphion/vpu_v4l2.h b/drivers/media/platform/amphion/vpu_v4l2.h
index 60f43056a7a2..56f2939fa84d 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.h
+++ b/drivers/media/platform/amphion/vpu_v4l2.h
@@ -12,6 +12,7 @@ void vpu_inst_lock(struct vpu_inst *inst);
void vpu_inst_unlock(struct vpu_inst *inst);
void vpu_set_buffer_state(struct vb2_v4l2_buffer *vbuf, unsigned int state);
unsigned int vpu_get_buffer_state(struct vb2_v4l2_buffer *vbuf);
+void vpu_set_buffer_average_qp(struct vb2_v4l2_buffer *vbuf, u32 qp);
int vpu_v4l2_open(struct file *file, struct vpu_inst *inst);
int vpu_v4l2_close(struct file *file);
diff --git a/drivers/media/platform/amphion/vpu_windsor.c b/drivers/media/platform/amphion/vpu_windsor.c
index 5f1101d7cf9e..e7d37aa4b826 100644
--- a/drivers/media/platform/amphion/vpu_windsor.c
+++ b/drivers/media/platform/amphion/vpu_windsor.c
@@ -499,6 +499,7 @@ struct windsor_pic_info {
u32 proc_dacc_rng_wr_cnt;
s32 tv_s;
u32 tv_ns;
+ u32 average_qp;
};
u32 vpu_windsor_get_data_size(void)
@@ -734,6 +735,7 @@ static void vpu_windsor_unpack_pic_info(struct vpu_rpc_event *pkt, void *data)
info->wptr = get_ptr(windsor->str_buff_wptr);
info->crc = windsor->frame_crc;
info->timestamp = timespec64_to_ns(&ts);
+ info->average_qp = windsor->average_qp;
}
static void vpu_windsor_unpack_mem_req(struct vpu_rpc_event *pkt, void *data)
--
2.43.0-rc1
On 06/05/2024 10:49, Ming Qian wrote:
> Add a control V4L2_CID_MPEG_VIDEO_AVERAGE_QP to report the average qp
> value of current encoded frame. the value applies to the last dequeued
> capture buffer.
>
> Signed-off-by: Ming Qian <[email protected]>
Reviewed-by: Hans Verkuil <[email protected]>
Regards,
Hans
> ---
> v3
> - document the valid range of the new ctrl
>
> v2
> - improve document description according Hans's comments
> - drop volatile flag
>
> .../userspace-api/media/v4l/ext-ctrls-codec.rst | 14 ++++++++++++++
> drivers/media/v4l2-core/v4l2-ctrls-defs.c | 5 +++++
> include/uapi/linux/v4l2-controls.h | 2 ++
> 3 files changed, 21 insertions(+)
>
> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> index 2a165ae063fb..4a379bd9e3fb 100644
> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
> @@ -1653,6 +1653,20 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
> Quantization parameter for a P frame for FWHT. Valid range: from 1
> to 31.
>
> +``V4L2_CID_MPEG_VIDEO_AVERAGE_QP (integer)``
> + This read-only control returns the average QP value of the currently
> + encoded frame. The value applies to the last dequeued capture buffer
> + (VIDIOC_DQBUF). Its valid range depends on the encoding format and parameters.
> + For H264, its valid range is from 0 to 51.
> + For HEVC, its valid range is from 0 to 51 for 8 bit and
> + from 0 to 63 for 10 bit.
> + For H263 and MPEG4, its valid range is from 1 to 31.
> + For VP8, its valid range is from 0 to 127.
> + For VP9, its valid range is from 0 to 255.
> + If the codec's MIN_QP and MAX_QP are set, then the QP will meet both requirements.
> + Codecs need to always use the specified range, rather then a HW custom range.
> + Applicable to encoders
> +
> .. raw:: latex
>
> \normalsize
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
> index 8696eb1cdd61..1ea52011247a 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
> @@ -970,6 +970,7 @@ const char *v4l2_ctrl_get_name(u32 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_AVERAGE_QP: return "Average QP Value";
> case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value";
> case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value";
>
> @@ -1507,6 +1508,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
> *max = 0xffffffffffffLL;
> *step = 1;
> break;
> + case V4L2_CID_MPEG_VIDEO_AVERAGE_QP:
> + *type = V4L2_CTRL_TYPE_INTEGER;
> + *flags |= V4L2_CTRL_FLAG_READ_ONLY;
> + break;
> case V4L2_CID_PIXEL_RATE:
> *type = V4L2_CTRL_TYPE_INTEGER64;
> *flags |= V4L2_CTRL_FLAG_READ_ONLY;
> diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
> index 99c3f5e99da7..974fd254e573 100644
> --- a/include/uapi/linux/v4l2-controls.h
> +++ b/include/uapi/linux/v4l2-controls.h
> @@ -898,6 +898,8 @@ enum v4l2_mpeg_video_av1_level {
> V4L2_MPEG_VIDEO_AV1_LEVEL_7_3 = 23
> };
>
> +#define V4L2_CID_MPEG_VIDEO_AVERAGE_QP (V4L2_CID_CODEC_BASE + 657)
> +
> /* MPEG-class control IDs specific to the CX2341x driver as defined by V4L2 */
> #define V4L2_CID_CODEC_CX2341X_BASE (V4L2_CTRL_CLASS_CODEC | 0x1000)
> #define V4L2_CID_MPEG_CX2341X_VIDEO_SPATIAL_FILTER_MODE (V4L2_CID_CODEC_CX2341X_BASE+0)