@@ -2063,6 +2063,9 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
* - __s32
- ``bottom_field_order_cnt``
-
+ * - enum :c:type:`v4l2_h264_dpb_reference`
+ - ``reference``
+ - Specifies how the DPB entry is referenced.
* - __u32
- ``flags``
- See :ref:`DPB Entry Flags <h264_dpb_flags>`
@@ -2080,29 +2083,16 @@ enum v4l2_mpeg_video_h264_hierarchical_coding_type -
* - ``V4L2_H264_DPB_ENTRY_FLAG_VALID``
- 0x00000001
- - The DPB entry is valid and should be considered
+ - The DPB entry is valid (non-empty) and should be considered.
* - ``V4L2_H264_DPB_ENTRY_FLAG_ACTIVE``
- 0x00000002
- - The DPB entry is currently being used as a reference frame
+ - The DPB entry is used for reference.
* - ``V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM``
- 0x00000004
- - The DPB entry is a long term reference frame
+ - The DPB entry is used for long-term reference.
* - ``V4L2_H264_DPB_ENTRY_FLAG_FIELD``
- 0x00000008
- - The DPB entry is a field reference, which means only one of the field
- will be used when decoding the new frame/field. When not set the DPB
- entry is a frame reference (both fields will be used). Note that this
- flag does not say anything about the number of fields contained in the
- reference frame, it just describes the one used to decode the new
- field/frame
- * - ``V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD``
- - 0x00000010
- - The DPB entry is a bottom field reference (only the bottom field of the
- reference frame is needed to decode the new frame/field). Only valid if
- V4L2_H264_DPB_ENTRY_FLAG_FIELD is set. When
- V4L2_H264_DPB_ENTRY_FLAG_FIELD is set but
- V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD is not, that means the
- DPB entry is a top field reference
+ - The DPB entry is a single field or a complementary field pair.
``V4L2_CID_MPEG_VIDEO_H264_DECODE_MODE (enum)``
Specifies the decoding mode to use. Currently exposes slice-based and
@@ -66,10 +66,10 @@ v4l2_h264_init_reflist_builder(struct v4l2_h264_reflist_builder *b,
else
b->refs[i].frame_num = dpb[i].frame_num;
- if (!(dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_FIELD))
+ if (dpb[i].reference == V4L2_H264_DPB_FRAME_REF)
pic_order_count = min(dpb[i].top_field_order_cnt,
dpb[i].bottom_field_order_cnt);
- else if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD)
+ else if (dpb[i].reference & V4L2_H264_DPB_BOTTOM_REF)
pic_order_count = dpb[i].bottom_field_order_cnt;
else
pic_order_count = dpb[i].top_field_order_cnt;
@@ -949,16 +949,17 @@ static void config_registers(struct rkvdec_ctx *ctx,
for (i = 0; i < ARRAY_SIZE(dec_params->dpb); i++) {
struct vb2_buffer *vb_buf = get_ref_buf(ctx, run, i);
- refer_addr = vb2_dma_contig_plane_dma_addr(vb_buf, 0) |
- RKVDEC_COLMV_USED_FLAG_REF;
+ refer_addr = vb2_dma_contig_plane_dma_addr(vb_buf, 0);
- if (!(dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_FIELD))
- refer_addr |= RKVDEC_TOPFIELD_USED_REF |
- RKVDEC_BOTFIELD_USED_REF;
- else if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD)
- refer_addr |= RKVDEC_BOTFIELD_USED_REF;
- else
+ if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_ACTIVE)
+ refer_addr |= RKVDEC_COLMV_USED_FLAG_REF;
+ if (dpb[i].flags & V4L2_H264_DPB_ENTRY_FLAG_FIELD)
+ refer_addr |= RKVDEC_FIELD_REF;
+
+ if (dpb[i].reference & V4L2_H264_DPB_TOP_REF)
refer_addr |= RKVDEC_TOPFIELD_USED_REF;
+ if (dpb[i].reference & V4L2_H264_DPB_BOTTOM_REF)
+ refer_addr |= RKVDEC_BOTFIELD_USED_REF;
writel_relaxed(dpb[i].top_field_order_cnt,
rkvdec->regs + poc_reg_tbl_top_field[i]);
@@ -205,7 +205,6 @@ struct v4l2_ctrl_h264_slice_params {
#define V4L2_H264_DPB_ENTRY_FLAG_ACTIVE 0x02
#define V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM 0x04
#define V4L2_H264_DPB_ENTRY_FLAG_FIELD 0x08
-#define V4L2_H264_DPB_ENTRY_FLAG_BOTTOM_FIELD 0x10
struct v4l2_h264_dpb_entry {
__u64 reference_ts;
@@ -214,6 +213,7 @@ struct v4l2_h264_dpb_entry {
/* Note that field is indicated by v4l2_buffer.field */
__s32 top_field_order_cnt;
__s32 bottom_field_order_cnt;
+ enum v4l2_h264_dpb_reference reference;
__u32 flags; /* V4L2_H264_DPB_ENTRY_FLAG_* */
};
As discussed recently, the current interface for the Decoded Picture Buffer is not enough to properly support field coding. This commit introduces enough semantics to support frame and field coding, and to signal how DPB entries are "used for reference". Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> --- v2: * Fix rkvdec usage of fields flags as noted by Jonas. --- .../media/v4l/ext-ctrls-codec.rst | 24 ++++++------------- drivers/media/v4l2-core/v4l2-h264.c | 4 ++-- drivers/staging/media/rkvdec/rkvdec-h264.c | 17 ++++++------- include/media/h264-ctrls.h | 2 +- 4 files changed, 19 insertions(+), 28 deletions(-)