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/* SPDX-License-Identifier: GPL-2.0 */
/*
* These are the VP8 state controls for use with stateless VP8
* 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 _VP8_CTRLS_H_
#define _VP8_CTRLS_H_
#include <linux/types.h>
#define V4L2_PIX_FMT_VP8_FRAME v4l2_fourcc('V', 'P', '8', 'F')
#define V4L2_CID_MPEG_VIDEO_VP8_FRAME (V4L2_CID_CODEC_BASE + 2000)
#define V4L2_CTRL_TYPE_VP8_FRAME 0x301
#define V4L2_VP8_SEGMENT_FLAG_ENABLED 0x01
#define V4L2_VP8_SEGMENT_FLAG_UPDATE_MAP 0x02
#define V4L2_VP8_SEGMENT_FLAG_UPDATE_FEATURE_DATA 0x04
#define V4L2_VP8_SEGMENT_FLAG_DELTA_VALUE_MODE 0x08
/**
* struct v4l2_vp8_segment - VP8 segment-based adjustments parameters
*
* @quant_update: update values for the segment quantizer.
* @lf_update: update values for the loop filter level.
* @segment_probs: branch probabilities of the segment_id decoding tree.
* @padding: padding field. Should be zeroed by applications.
* @flags: see V4L2_VP8_SEGMENT_FLAG_{}.
*
* This structure contains segment-based adjustments related parameters.
* See the 'update_segmentation()' part of the frame header syntax,
* and section '9.3. Segment-Based Adjustments' of the VP8 specification
* for more details.
*/
struct v4l2_vp8_segment {
__s8 quant_update[4];
__s8 lf_update[4];
__u8 segment_probs[3];
__u8 padding;
__u32 flags;
};
#define V4L2_VP8_LF_ADJ_ENABLE 0x01
#define V4L2_VP8_LF_DELTA_UPDATE 0x02
#define V4L2_VP8_LF_FILTER_TYPE_SIMPLE 0x04
/**
* struct v4l2_vp8_loop_filter - VP8 loop filter parameters
*
* @ref_frm_delta: Reference frame signed delta values.
* @mb_mode_delta: MB prediction mode signed delta values.
* @sharpness_level: matches sharpness_level syntax element.
* @level: matches loop_filter_level syntax element.
* @padding: padding field. Should be zeroed by applications.
* @flags: see V4L2_VP8_LF_FLAG_{}.
*
* This structure contains loop filter related parameters.
* See the 'mb_lf_adjustments()' part of the frame header syntax,
* and section '9.4. Loop Filter Type and Levels' of the VP8 specification
* for more details.
*/
struct v4l2_vp8_loop_filter {
__s8 ref_frm_delta[4];
__s8 mb_mode_delta[4];
__u8 sharpness_level;
__u8 level;
__u16 padding;
__u32 flags;
};
/**
* struct v4l2_vp8_quantization - VP8 quantizattion indices
*
* @y_ac_qi: luma AC coefficient table index.
* @y_dc_delta: luma DC delta vaue.
* @y2_dc_delta: y2 block DC delta value.
* @y2_ac_delta: y2 block AC delta value.
* @uv_dc_delta: chroma DC delta value.
* @uv_ac_delta: chroma AC delta value.
* @padding: padding field. Should be zeroed by applications.
* This structure contains the quantization indices present
* in 'quant_indices()' part of the frame header syntax.
* See section '9.6. Dequantization Indices' of the VP8 specification
* for more details.
*/
struct v4l2_vp8_quantization {
__u8 y_ac_qi;
__s8 y_dc_delta;
__s8 y2_dc_delta;
__s8 y2_ac_delta;
__s8 uv_dc_delta;
__s8 uv_ac_delta;
__u16 padding;
};
#define V4L2_VP8_COEFF_PROB_CNT 11
#define V4L2_VP8_MV_PROB_CNT 19
/**
* struct v4l2_vp8_entropy - VP8 update probabilities
*
* @coeff_probs: coefficient probability update values.
* @y_mode_probs: luma intra-prediction probabilities.
* @uv_mode_probs: chroma intra-prediction probabilities.
* @mv_probs: mv decoding probability.
* @padding: padding field. Should be zeroed by applications.
*
* This structure contains the update probabilities present in
* 'token_prob_update()' and 'mv_prob_update()' part of the frame header.
* See section '17.2. Probability Updates' of the VP8 specification
* for more details.
*/
struct v4l2_vp8_entropy {
__u8 coeff_probs[4][8][3][V4L2_VP8_COEFF_PROB_CNT];
__u8 y_mode_probs[4];
__u8 uv_mode_probs[3];
__u8 mv_probs[2][V4L2_VP8_MV_PROB_CNT];
__u8 padding[3];
};
/**
* struct v4l2_vp8_entropy_coder_state - VP8 boolean coder state
*
* @range: coder state value for "Range"
* @value: coder state value for "Value"
* @bit_count: number of bits left in range "Value".
* @padding: padding field. Should be zeroed by applications.
*
* This structure contains the state for the boolean coder, as
* explained in section '7. Boolean Entropy Decoder' of the VP8 specification.
*/
struct v4l2_vp8_entropy_coder_state {
__u8 range;
__u8 value;
__u8 bit_count;
__u8 padding;
};
#define V4L2_VP8_FRAME_FLAG_KEY_FRAME 0x01
#define V4L2_VP8_FRAME_FLAG_EXPERIMENTAL 0x02
#define V4L2_VP8_FRAME_FLAG_SHOW_FRAME 0x04
#define V4L2_VP8_FRAME_FLAG_MB_NO_SKIP_COEFF 0x08
#define V4L2_VP8_FRAME_FLAG_SIGN_BIAS_GOLDEN 0x10
#define V4L2_VP8_FRAME_FLAG_SIGN_BIAS_ALT 0x20
#define VP8_FRAME_IS_KEY_FRAME(hdr) \
(!!((hdr)->flags & V4L2_VP8_FRAME_FLAG_KEY_FRAME))
/**
* struct v4l2_vp8_frame - VP8 frame parameters
*
* @seg: segmentation parameters. See &v4l2_vp8_segment for more details
* @lf: loop filter parameters. See &v4l2_vp8_loop_filter for more details
* @quant: quantization parameters. See &v4l2_vp8_quantization for more details
* @probs: probabilities. See &v4l2_vp9_probabilities for more details
* @width: frame width.
* @height: frame height.
* @horizontal_scale: horizontal scaling factor.
* @vertical_scale: vertical scaling factor.
* @version: bitstream version.
* @prob_skip_false: frame header syntax element.
* @prob_intra: frame header syntax element.
* @prob_last: frame header syntax element.
* @prob_gf: frame header syntax element.
* @num_dct_parts: number of DCT coefficients partitions.
* @first_part_size: size of the first partition, i.e. the control partition.
* @first_part_header_bits: size in bits of the first partition header portion.
* @dct_part_sizes: DCT coefficients sizes.
* @last_frame_ts: "last" reference buffer timestamp.
* The timestamp refers to the timestamp field in struct v4l2_buffer.
* Use v4l2_timeval_to_ns() to convert the struct timeval to a __u64.
* @golden_frame_ts: "golden" reference buffer timestamp.
* @alt_frame_ts: "alt" reference buffer timestamp.
* @flags: see V4L2_VP8_FRAME_FLAG_{}.
*/
struct v4l2_ctrl_vp8_frame {
struct v4l2_vp8_segment segment;
struct v4l2_vp8_loop_filter lf;
struct v4l2_vp8_quantization quant;
struct v4l2_vp8_entropy entropy;
struct v4l2_vp8_entropy_coder_state coder_state;
__u16 width;
__u16 height;
__u8 horizontal_scale;
__u8 vertical_scale;
__u8 version;
__u8 prob_skip_false;
__u8 prob_intra;
__u8 prob_last;
__u8 prob_gf;
__u8 num_dct_parts;
__u32 first_part_size;
__u32 first_part_header_bits;
__u32 dct_part_sizes[8];
__u64 last_frame_ts;
__u64 golden_frame_ts;
__u64 alt_frame_ts;
__u64 flags;
};
#endif
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