[PATCH v5 05/13] media: hevc: Add decode params control
From: Benjamin Gaignard
Date: Wed Mar 17 2021 - 13:33:39 EST
Add decode params control and it associated structure to regroup
all the information that are needed to decode a reference frame as
it is describe in ITU-T Rec. H.265 section "8.3.2 Decoding process
for reference picture set".
Adapt Cedrus driver to these changes.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxxxxx>
---
.../media/v4l/ext-ctrls-codec.rst | 94 +++++++++++++++----
.../media/v4l/vidioc-queryctrl.rst | 6 ++
drivers/media/v4l2-core/v4l2-ctrls.c | 26 +++--
drivers/staging/media/sunxi/cedrus/cedrus.c | 6 ++
drivers/staging/media/sunxi/cedrus/cedrus.h | 1 +
.../staging/media/sunxi/cedrus/cedrus_dec.c | 2 +
.../staging/media/sunxi/cedrus/cedrus_h265.c | 6 +-
include/media/hevc-ctrls.h | 29 ++++--
8 files changed, 134 insertions(+), 36 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index d62e8e423f3b..8a6d45cb437e 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -3436,9 +3436,6 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
* - __u8
- ``pic_struct``
-
- * - __u8
- - ``num_active_dpb_entries``
- - The number of entries in ``dpb``.
* - __u8
- ``ref_idx_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- The list of L0 reference elements as indices in the DPB.
@@ -3446,22 +3443,8 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
- ``ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- The list of L1 reference elements as indices in the DPB.
* - __u8
- - ``num_rps_poc_st_curr_before``
- - The number of reference pictures in the short-term set that come before
- the current frame.
- * - __u8
- - ``num_rps_poc_st_curr_after``
- - The number of reference pictures in the short-term set that come after
- the current frame.
- * - __u8
- - ``num_rps_poc_lt_curr``
- - The number of reference pictures in the long-term set.
- * - __u8
- - ``padding[7]``
+ - ``padding``
- Applications and drivers must set this to zero.
- * - struct :c:type:`v4l2_hevc_dpb_entry`
- - ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
- - The decoded picture buffer, for meta-data about reference frames.
* - struct :c:type:`v4l2_hevc_pred_weight_table`
- ``pred_weight_table``
- The prediction weight coefficients for inter-picture prediction.
@@ -3660,3 +3643,78 @@ 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_HEVC_DECODE_PARAMS (struct)``
+ Specifies various decode parameters, especially the references picture order
+ count (POC) for all the lists (short, long, before, current, after) and the
+ number of entries for each of them.
+ These parameters are defined according to :ref:`hevc`.
+ They are described in section 8.3 "Slice decoding process" of the
+ specification.
+
+.. c:type:: v4l2_ctrl_hevc_decode_params
+
+.. cssclass:: longtable
+
+.. flat-table:: struct v4l2_ctrl_hevc_decode_params
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - __s32
+ - ``pic_order_cnt_val``
+ - PicOrderCntVal as described in section 8.3.1 "Decoding process
+ for picture order count" of the specification.
+ * - __u8
+ - ``num_active_dpb_entries``
+ - The number of entries in ``dpb``.
+ * - struct :c:type:`v4l2_hevc_dpb_entry`
+ - ``dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
+ - The decoded picture buffer, for meta-data about reference frames.
+ * - __u8
+ - ``num_poc_st_curr_before``
+ - The number of reference pictures in the short-term set that come before
+ the current frame.
+ * - __u8
+ - ``num_poc_st_curr_after``
+ - The number of reference pictures in the short-term set that come after
+ the current frame.
+ * - __u8
+ - ``num_poc_lt_curr``
+ - The number of reference pictures in the long-term set.
+ * - __u8
+ - ``poc_st_curr_before[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
+ - PocStCurrBefore as described in section 8.3.2 "Decoding process for reference
+ picture set.
+ * - __u8
+ - ``poc_st_curr_after[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
+ - PocStCurrAfter as described in section 8.3.2 "Decoding process for reference
+ picture set.
+ * - __u8
+ - ``poc_lt_curr[V4L2_HEVC_DPB_ENTRIES_NUM_MAX]``
+ - PocLtCurr as described in section 8.3.2 "Decoding process for reference
+ picture set.
+ * - __u64
+ - ``flags``
+ - See :ref:`Decode Parameters Flags <hevc_decode_params_flags>`
+
+.. _hevc_decode_params_flags:
+
+``Decode Parameters Flags``
+
+.. cssclass:: longtable
+
+.. flat-table::
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - ``V4L2_HEVC_DECODE_PARAM_FLAG_IRAP_PIC``
+ - 0x00000001
+ -
+ * - ``V4L2_HEVC_DECODE_PARAM_FLAG_IDR_PIC``
+ - 0x00000002
+ -
+ * - ``V4L2_HEVC_DECODE_PARAM_FLAG_NO_OUTPUT_OF_PRIOR``
+ - 0x00000004
+ -
diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
index 82f61f1e2fb8..d84ae255bc79 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
@@ -486,6 +486,12 @@ See also the examples in :ref:`control`.
- n/a
- A struct :c:type:`v4l2_ctrl_hevc_slice_params`, containing HEVC
slice parameters for stateless video decoders.
+ * - ``V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS``
+ - n/a
+ - n/a
+ - n/a
+ - A struct :c:type:`v4l2_ctrl_hevc_decode_params`, containing HEVC
+ decoding parameters for stateless video decoders.
.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 016cf6204cbb..4060b5bcc3c0 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1028,6 +1028,7 @@ const char *v4l2_ctrl_get_name(u32 id)
case V4L2_CID_MPEG_VIDEO_HEVC_SPS: return "HEVC Sequence Parameter Set";
case V4L2_CID_MPEG_VIDEO_HEVC_PPS: return "HEVC Picture Parameter Set";
case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters";
+ case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS: return "HEVC Decode Parameters";
case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: return "HEVC Decode Mode";
case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code";
@@ -1482,6 +1483,9 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
break;
+ case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS:
+ *type = V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS;
+ break;
case V4L2_CID_UNIT_CELL_SIZE:
*type = V4L2_CTRL_TYPE_AREA;
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
@@ -1833,6 +1837,7 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
struct v4l2_ctrl_hevc_sps *p_hevc_sps;
struct v4l2_ctrl_hevc_pps *p_hevc_pps;
struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
+ struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
struct v4l2_area *area;
void *p = ptr.p + idx * ctrl->elem_size;
unsigned int i;
@@ -2108,23 +2113,27 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
zero_padding(*p_hevc_pps);
break;
- case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
- p_hevc_slice_params = p;
+ case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS:
+ p_hevc_decode_params = p;
- if (p_hevc_slice_params->num_active_dpb_entries >
+ if (p_hevc_decode_params->num_active_dpb_entries >
V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
return -EINVAL;
- zero_padding(p_hevc_slice_params->pred_weight_table);
-
- for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries;
+ for (i = 0; i < p_hevc_decode_params->num_active_dpb_entries;
i++) {
struct v4l2_hevc_dpb_entry *dpb_entry =
- &p_hevc_slice_params->dpb[i];
+ &p_hevc_decode_params->dpb[i];
zero_padding(*dpb_entry);
}
+ break;
+
+ case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
+ p_hevc_slice_params = p;
+
+ zero_padding(p_hevc_slice_params->pred_weight_table);
zero_padding(*p_hevc_slice_params);
break;
@@ -2821,6 +2830,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
break;
+ case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS:
+ elem_size = sizeof(struct v4l2_ctrl_hevc_decode_params);
+ break;
case V4L2_CTRL_TYPE_AREA:
elem_size = sizeof(struct v4l2_area);
break;
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
index 7bd9291c8d5f..4cd3cab1a257 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -151,6 +151,12 @@ static const struct cedrus_control cedrus_controls[] = {
},
.codec = CEDRUS_CODEC_VP8,
},
+ {
+ .cfg = {
+ .id = V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS,
+ },
+ .codec = CEDRUS_CODEC_H265,
+ },
};
#define CEDRUS_CONTROLS_COUNT ARRAY_SIZE(cedrus_controls)
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.h b/drivers/staging/media/sunxi/cedrus/cedrus.h
index 251a6a660351..2ca33ac38b9a 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.h
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
@@ -76,6 +76,7 @@ struct cedrus_h265_run {
const struct v4l2_ctrl_hevc_sps *sps;
const struct v4l2_ctrl_hevc_pps *pps;
const struct v4l2_ctrl_hevc_slice_params *slice_params;
+ const struct v4l2_ctrl_hevc_decode_params *decode_params;
};
struct cedrus_vp8_run {
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
index a9090daf626a..cd821f417a14 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
@@ -68,6 +68,8 @@ void cedrus_device_run(void *priv)
V4L2_CID_MPEG_VIDEO_HEVC_PPS);
run.h265.slice_params = cedrus_find_control_data(ctx,
V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS);
+ run.h265.decode_params = cedrus_find_control_data(ctx,
+ V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS);
break;
case V4L2_PIX_FMT_VP8_FRAME:
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index ce497d0197df..dce5db6be13a 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -245,6 +245,7 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
const struct v4l2_ctrl_hevc_sps *sps;
const struct v4l2_ctrl_hevc_pps *pps;
const struct v4l2_ctrl_hevc_slice_params *slice_params;
+ const struct v4l2_ctrl_hevc_decode_params *decode_params;
const struct v4l2_hevc_pred_weight_table *pred_weight_table;
dma_addr_t src_buf_addr;
dma_addr_t src_buf_end_addr;
@@ -256,6 +257,7 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
sps = run->h265.sps;
pps = run->h265.pps;
slice_params = run->h265.slice_params;
+ decode_params = run->h265.decode_params;
pred_weight_table = &slice_params->pred_weight_table;
/* MV column buffer size and allocation. */
@@ -487,7 +489,7 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
reg = VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_TC_OFFSET_DIV2(slice_params->slice_tc_offset_div2) |
VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_BETA_OFFSET_DIV2(slice_params->slice_beta_offset_div2) |
- VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_POC_BIGEST_IN_RPS_ST(slice_params->num_rps_poc_st_curr_after == 0) |
+ VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_POC_BIGEST_IN_RPS_ST(decode_params->num_rps_poc_st_curr_after == 0) |
VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_CR_QP_OFFSET(slice_params->slice_cr_qp_offset) |
VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_CB_QP_OFFSET(slice_params->slice_cb_qp_offset) |
VE_DEC_H265_DEC_SLICE_HDR_INFO1_SLICE_QP_DELTA(slice_params->slice_qp_delta);
@@ -528,7 +530,7 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
/* Write decoded picture buffer in pic list. */
cedrus_h265_frame_info_write_dpb(ctx, slice_params->dpb,
- slice_params->num_active_dpb_entries);
+ decode_params->num_active_dpb_entries);
/* Output frame. */
diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h
index 003f819ecb26..8e0109eea454 100644
--- a/include/media/hevc-ctrls.h
+++ b/include/media/hevc-ctrls.h
@@ -19,6 +19,7 @@
#define V4L2_CID_MPEG_VIDEO_HEVC_SPS (V4L2_CID_CODEC_BASE + 1008)
#define V4L2_CID_MPEG_VIDEO_HEVC_PPS (V4L2_CID_CODEC_BASE + 1009)
#define V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS (V4L2_CID_CODEC_BASE + 1010)
+#define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_PARAMS (V4L2_CID_CODEC_BASE + 1012)
#define V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE (V4L2_CID_CODEC_BASE + 1015)
#define V4L2_CID_MPEG_VIDEO_HEVC_START_CODE (V4L2_CID_CODEC_BASE + 1016)
@@ -26,6 +27,7 @@
#define V4L2_CTRL_TYPE_HEVC_SPS 0x0120
#define V4L2_CTRL_TYPE_HEVC_PPS 0x0121
#define V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS 0x0122
+#define V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS 0x0124
enum v4l2_mpeg_video_hevc_decode_mode {
V4L2_MPEG_VIDEO_HEVC_DECODE_MODE_SLICE_BASED,
@@ -194,18 +196,10 @@ struct v4l2_ctrl_hevc_slice_params {
__u8 pic_struct;
/* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
- __u8 num_active_dpb_entries;
__u8 ref_idx_l0[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
__u8 ref_idx_l1[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
- __u8 num_rps_poc_st_curr_before;
- __u8 num_rps_poc_st_curr_after;
- __u8 num_rps_poc_lt_curr;
-
- __u8 padding;
-
- /* ISO/IEC 23008-2, ITU-T Rec. H.265: General slice segment header */
- struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ __u8 padding[5];
/* ISO/IEC 23008-2, ITU-T Rec. H.265: Weighted prediction parameter */
struct v4l2_hevc_pred_weight_table pred_weight_table;
@@ -213,4 +207,21 @@ struct v4l2_ctrl_hevc_slice_params {
__u64 flags;
};
+#define V4L2_HEVC_DECODE_PARAM_FLAG_IRAP_PIC 0x1
+#define V4L2_HEVC_DECODE_PARAM_FLAG_IDR_PIC 0x2
+#define V4L2_HEVC_DECODE_PARAM_FLAG_NO_OUTPUT_OF_PRIOR 0x4
+
+struct v4l2_ctrl_hevc_decode_params {
+ __s32 pic_order_cnt_val;
+ __u8 num_active_dpb_entries;
+ struct v4l2_hevc_dpb_entry dpb[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ __u8 num_poc_st_curr_before;
+ __u8 num_poc_st_curr_after;
+ __u8 num_poc_lt_curr;
+ __u8 poc_st_curr_before[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ __u8 poc_st_curr_after[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ __u8 poc_lt_curr[V4L2_HEVC_DPB_ENTRIES_NUM_MAX];
+ __u64 flags;
+};
+
#endif
--
2.25.1