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/* SPDX-License-Identifier: GPL-2.0 */
/*
* These are the MPEG2 state controls for use with stateless MPEG-2
* codec drivers.
*
* It turns out that these structs are not stable yet and will undergo
* more changes. So keep them private until they are stable and ready to
* become part of the official public API.
*/
#ifndef _MPEG2_CTRLS_H_
#define _MPEG2_CTRLS_H_
#define V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS (V4L2_CID_CODEC_BASE+250)
#define V4L2_CID_MPEG_VIDEO_MPEG2_QUANTISATION (V4L2_CID_CODEC_BASE+251)
#define V4L2_CID_MPEG_VIDEO_MPEG2_SEQUENCE (V4L2_CID_CODEC_BASE+252)
#define V4L2_CID_MPEG_VIDEO_MPEG2_PICTURE (V4L2_CID_CODEC_BASE+253)
/* enum v4l2_ctrl_type type values */
#define V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS 0x0130
#define V4L2_CTRL_TYPE_MPEG2_QUANTISATION 0x0131
#define V4L2_CTRL_TYPE_MPEG2_SEQUENCE 0x0132
#define V4L2_CTRL_TYPE_MPEG2_PICTURE 0x0133
#define V4L2_MPEG2_SEQ_FLAG_PROGRESSIVE 0x01
/**
* struct v4l2_ctrl_mpeg2_sequence - MPEG-2 sequence header
*
* All the members on this structure match the sequence header and sequence
* extension syntaxes as specified by the MPEG-2 specification.
*
* Fields horizontal_size, vertical_size and vbv_buffer_size are a
* combination of respective _value and extension syntax elements,
* as described in section 6.3.3 "Sequence header".
*
* @horizontal_size: combination of elements horizontal_size_value and
* horizontal_size_extension.
* @vertical_size: combination of elements vertical_size_value and
* vertical_size_extension.
* @vbv_buffer_size: combination of elements vbv_buffer_size_value and
* vbv_buffer_size_extension.
* @profile_and_level_indication: see MPEG-2 specification.
* @chroma_format: see MPEG-2 specification.
* @flags: see V4L2_MPEG2_SEQ_FLAG_{}.
*/
struct v4l2_ctrl_mpeg2_sequence {
__u16 horizontal_size;
__u16 vertical_size;
__u32 vbv_buffer_size;
__u16 profile_and_level_indication;
__u8 chroma_format;
__u8 flags;
};
#define V4L2_MPEG2_PIC_CODING_TYPE_I 1
#define V4L2_MPEG2_PIC_CODING_TYPE_P 2
#define V4L2_MPEG2_PIC_CODING_TYPE_B 3
#define V4L2_MPEG2_PIC_CODING_TYPE_D 4
#define V4L2_MPEG2_PIC_TOP_FIELD 0x1
#define V4L2_MPEG2_PIC_BOTTOM_FIELD 0x2
#define V4L2_MPEG2_PIC_FRAME 0x3
#define V4L2_MPEG2_PIC_FLAG_TOP_FIELD_FIRST 0x0001
#define V4L2_MPEG2_PIC_FLAG_FRAME_PRED_DCT 0x0002
#define V4L2_MPEG2_PIC_FLAG_CONCEALMENT_MV 0x0004
#define V4L2_MPEG2_PIC_FLAG_Q_SCALE_TYPE 0x0008
#define V4L2_MPEG2_PIC_FLAG_INTRA_VLC 0x0010
#define V4L2_MPEG2_PIC_FLAG_ALT_SCAN 0x0020
#define V4L2_MPEG2_PIC_FLAG_REPEAT_FIRST 0x0040
#define V4L2_MPEG2_PIC_FLAG_PROGRESSIVE 0x0080
/**
* struct v4l2_ctrl_mpeg2_picture - MPEG-2 picture header
*
* All the members on this structure match the picture header and picture
* coding extension syntaxes as specified by the MPEG-2 specification.
*
* @backward_ref_ts: timestamp of the V4L2 capture buffer to use as
* reference for backward prediction.
* @forward_ref_ts: timestamp of the V4L2 capture buffer to use as
* reference for forward prediction. These timestamp refers to the
* timestamp field in struct v4l2_buffer. Use v4l2_timeval_to_ns()
* to convert the struct timeval to a __u64.
* @flags: see V4L2_MPEG2_PIC_FLAG_{}.
* @f_code[2][2]: see MPEG-2 specification.
* @picture_coding_type: see MPEG-2 specification.
* @picture_structure: see V4L2_MPEG2_PIC_{}_FIELD.
* @intra_dc_precision: see MPEG-2 specification.
* @reserved: padding field. Should be zeroed by applications.
*/
struct v4l2_ctrl_mpeg2_picture {
__u64 backward_ref_ts;
__u64 forward_ref_ts;
__u32 flags;
__u8 f_code[2][2];
__u8 picture_coding_type;
__u8 picture_structure;
__u8 intra_dc_precision;
__u8 reserved[5];
};
/**
* struct v4l2_ctrl_mpeg2_slice_params - MPEG-2 slice header
*
* @quantiser_scale_code: quantiser scale integer matching an
* homonymous syntax element.
* @reserved: padding field. Should be zeroed by applications.
*/
struct v4l2_ctrl_mpeg2_slice_params {
__u32 bit_size;
__u32 data_bit_offset;
__u32 quantiser_scale_code;
__u32 reserved;
};
/**
* struct v4l2_ctrl_mpeg2_quantisation - MPEG-2 quantisation
*
* Quantization matrices as specified by section 6.3.7
* "Quant matrix extension".
*
* @intra_quantiser_matrix: The quantisation matrix coefficients
* for intra-coded frames, in zigzag scanning order. It is relevant
* for both luma and chroma components, although it can be superseded
* by the chroma-specific matrix for non-4:2:0 YUV formats.
* @non_intra_quantiser_matrix: The quantisation matrix coefficients
* for non-intra-coded frames, in zigzag scanning order. It is relevant
* for both luma and chroma components, although it can be superseded
* by the chroma-specific matrix for non-4:2:0 YUV formats.
* @chroma_intra_quantiser_matrix: The quantisation matrix coefficients
* for the chominance component of intra-coded frames, in zigzag scanning
* order. Only relevant for 4:2:2 and 4:4:4 YUV formats.
* @chroma_non_intra_quantiser_matrix: The quantisation matrix coefficients
* for the chrominance component of non-intra-coded frames, in zigzag scanning
* order. Only relevant for 4:2:2 and 4:4:4 YUV formats.
*/
struct v4l2_ctrl_mpeg2_quantisation {
__u8 intra_quantiser_matrix[64];
__u8 non_intra_quantiser_matrix[64];
__u8 chroma_intra_quantiser_matrix[64];
__u8 chroma_non_intra_quantiser_matrix[64];
};
#endif
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