[PATCH v13 2/9] media: hevc: Add decode params control
Benjamin Gaignard
benjamin.gaignard at collabora.com
Mon Aug 23 01:27:58 PDT 2021
Le 17/08/2021 à 16:22, Nicolas Dufresne a écrit :
> Le lundi 09 août 2021 à 15:29 +0100, John Cox a écrit :
>> Hi
>>
>>> Add decode params control and the associated structure to group
>>> all the information that are needed to decode a reference frame as
>>> is described in ITU-T Rec. H.265 section "8.3.2 Decoding process
>>> for reference picture set".
>> I'm sorry I'm commenting late but I've only just got round to
>> implementing code based on this.
>>
>>> Adapt Cedrus driver to these changes.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard at collabora.com>
>>> Reviewed-by: Ezequiel Garcia <ezequiel at collabora.com>
>>> ---
>>> version 11:
>>> - Split what was done in v4l2-ctrls.c in v4l2-ctrls-core.c and v4l2-ctrls-defs.c
>>>
>>> .../media/v4l/ext-ctrls-codec.rst | 94 +++++++++++++++----
>>> .../media/v4l/vidioc-queryctrl.rst | 6 ++
>>> drivers/media/v4l2-core/v4l2-ctrls-core.c | 21 +++--
>>> drivers/media/v4l2-core/v4l2-ctrls-defs.c | 4 +
>>> 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 | 12 ++-
>>> include/media/hevc-ctrls.h | 29 ++++--
>>> 9 files changed, 136 insertions(+), 39 deletions(-)
>>>
>>> diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
>>> index 9cfb471fc6be..9120c5bcaf90 100644
>>> --- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
>>> +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
>>> @@ -2997,9 +2997,6 @@ 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.
>>> @@ -3007,22 +3004,8 @@ 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.
>>> @@ -3278,3 +3261,78 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
>>> 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.
>>> +
>>> +``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.
>> Two things here
>>
>> 1) By my understanding poc_st_curr_before/after & poc_lt_curr attempt to
>> hold a POC (as per 8.3.2). That is a 32bit signed value not U8. You can
>> get away with U16 if you mask & sign extend your comparisions but U8 I'm
>> pretty sure is too small.
I will send a patch to change the type of these lists.
Benjamin
>>
>> 2) I think you can calculate these list from the info in the DPB
>> structure. Certainly v4l2_hevc_dpb_entry.rps contains which list every
>> entry is in.
> Putting my userspace guy hat, we calculate these lists separately in userspace,
> because we need them, we do some extra effort to mark them into the DPB entry
> flags. I believe there is a redundancy issue in the uAPI too with this version.
> But it would be nice if we didn't have to translate twice.
>
>> Regards
>>
>> John Cox
>>
>>
>>> + * - __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 07e54029e1e9..f9ecf6276129 100644
>>> --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
>>> @@ -501,6 +501,12 @@ See also the examples in :ref:`control`.
>>> - n/a
>>> - A struct :c:type:`v4l2_ctrl_vp8_frame`, containing VP8
>>> frame 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.
>>>
>>> .. raw:: latex
>>>
>>> diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
>>> index 081439224357..c4b5082849b6 100644
>>> --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
>>> +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
>>> @@ -337,6 +337,7 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
>>> struct v4l2_ctrl_hevc_pps *p_hevc_pps;
>>> struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
>>> struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
>>> + 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;
>>> @@ -616,23 +617,26 @@ 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;
>>>
>>> @@ -1236,6 +1240,9 @@ 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_HDR10_CLL_INFO:
>>> elem_size = sizeof(struct v4l2_ctrl_hdr10_cll_info);
>>> break;
>>> diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
>>> index 7963c7b43450..b6344bbf1e00 100644
>>> --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c
>>> +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c
>>> @@ -996,6 +996,7 @@ 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";
>>>
>>> @@ -1487,6 +1488,9 @@ 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;
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c b/drivers/staging/media/sunxi/cedrus/cedrus.c
>>> index fa348c09f844..c0d005dafc6c 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
>>> @@ -157,6 +157,12 @@ 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 bbcdcd0787cf..88afba17b78b 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus.h
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus.h
>>> @@ -77,6 +77,7 @@ 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 97e410d92506..40e8c4123f76 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c
>>> @@ -70,6 +70,8 @@ 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 10744fab7cea..6821e3d05d34 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_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);
>>> @@ -527,8 +529,8 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
>>> cedrus_write(dev, VE_DEC_H265_NEIGHBOR_INFO_ADDR, reg);
>>>
>>> /* Write decoded picture buffer in pic list. */
>>> - cedrus_h265_frame_info_write_dpb(ctx, slice_params->dpb,
>>> - slice_params->num_active_dpb_entries);
>>> + cedrus_h265_frame_info_write_dpb(ctx, decode_params->dpb,
>>> + decode_params->num_active_dpb_entries);
>>>
>>> /* Output frame. */
>>>
>>> @@ -545,7 +547,7 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
>>>
>>> /* Reference picture list 0 (for P/B frames). */
>>> if (slice_params->slice_type != V4L2_HEVC_SLICE_TYPE_I) {
>>> - cedrus_h265_ref_pic_list_write(dev, slice_params->dpb,
>>> + cedrus_h265_ref_pic_list_write(dev, decode_params->dpb,
>>> slice_params->ref_idx_l0,
>>> slice_params->num_ref_idx_l0_active_minus1 + 1,
>>> VE_DEC_H265_SRAM_OFFSET_REF_PIC_LIST0);
>>> @@ -564,7 +566,7 @@ static void cedrus_h265_setup(struct cedrus_ctx *ctx,
>>>
>>> /* Reference picture list 1 (for B frames). */
>>> if (slice_params->slice_type == V4L2_HEVC_SLICE_TYPE_B) {
>>> - cedrus_h265_ref_pic_list_write(dev, slice_params->dpb,
>>> + cedrus_h265_ref_pic_list_write(dev, decode_params->dpb,
>>> slice_params->ref_idx_l1,
>>> slice_params->num_ref_idx_l1_active_minus1 + 1,
>>> VE_DEC_H265_SRAM_OFFSET_REF_PIC_LIST1);
>>> diff --git a/include/media/hevc-ctrls.h b/include/media/hevc-ctrls.h
>>> index 245052c15864..e53666a1127f 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,
>>> @@ -195,18 +197,10 @@ 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;
>>> @@ -214,4 +208,21 @@ 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
>
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