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encoder.rs
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// Copyright (c) 2018-2021, The rav1e contributors. All rights reserved
//
// This source code is subject to the terms of the BSD 2 Clause License and
// the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
// was not distributed with this source code in the LICENSE file, you can
// obtain it at www.aomedia.org/license/software. If the Alliance for Open
// Media Patent License 1.0 was not distributed with this source code in the
// PATENTS file, you can obtain it at www.aomedia.org/license/patent.
use crate::activity::*;
use crate::api::*;
use crate::cdef::*;
use crate::context::*;
use crate::deblock::*;
use crate::ec::*;
use crate::frame::*;
use crate::header::*;
use crate::lrf::*;
use crate::mc::{FilterMode, MotionVector};
use crate::me::*;
use crate::partition::PartitionType::*;
use crate::partition::RefType::*;
use crate::partition::*;
use crate::predict::{
AngleDelta, IntraEdgeFilterParameters, IntraParam, PredictionMode,
};
use crate::quantize::*;
use crate::rate::{
bexp64, q57, QuantizerParameters, FRAME_SUBTYPE_I, FRAME_SUBTYPE_P, QSCALE,
};
use crate::rdo::*;
use crate::segmentation::*;
use crate::serialize::{Deserialize, Serialize};
use crate::stats::EncoderStats;
use crate::tiling::*;
use crate::transform::*;
use crate::util::*;
use crate::wasm_bindgen::*;
use arg_enum_proc_macro::ArgEnum;
use arrayvec::*;
use bitstream_io::{BigEndian, BitWrite, BitWriter};
use std::collections::VecDeque;
use std::io::Write;
use std::mem::MaybeUninit;
use std::sync::Arc;
use std::{fmt, io, mem};
use crate::rayon::iter::*;
use rust_hawktracer::*;
#[allow(dead_code)]
#[derive(Debug, Clone, PartialEq)]
pub enum CDEFSearchMethod {
PickFromQ,
FastSearch,
FullSearch,
}
#[inline(always)]
fn poly2(q: f32, a: f32, b: f32, c: f32, max: i32) -> i32 {
clamp((q * q * a + q * b + c).round() as i32, 0, max)
}
pub static TEMPORAL_DELIMITER: [u8; 2] = [0x12, 0x00];
const MAX_NUM_TEMPORAL_LAYERS: usize = 8;
const MAX_NUM_SPATIAL_LAYERS: usize = 4;
const MAX_NUM_OPERATING_POINTS: usize =
MAX_NUM_TEMPORAL_LAYERS * MAX_NUM_SPATIAL_LAYERS;
/// Size of blocks for the importance computation, in pixels.
pub const IMPORTANCE_BLOCK_SIZE: usize =
1 << (IMPORTANCE_BLOCK_TO_BLOCK_SHIFT + BLOCK_TO_PLANE_SHIFT);
#[derive(Debug, Clone)]
pub struct ReferenceFrame<T: Pixel> {
pub order_hint: u32,
pub width: u32,
pub height: u32,
pub render_width: u32,
pub render_height: u32,
pub frame: Arc<Frame<T>>,
pub input_hres: Arc<Plane<T>>,
pub input_qres: Arc<Plane<T>>,
pub cdfs: CDFContext,
pub frame_me_stats: Arc<[FrameMEStats; REF_FRAMES as usize]>,
pub output_frameno: u64,
pub segmentation: SegmentationState,
}
#[derive(Debug, Clone, Default)]
pub struct ReferenceFramesSet<T: Pixel> {
pub frames: [Option<Arc<ReferenceFrame<T>>>; REF_FRAMES as usize],
pub deblock: [DeblockState; REF_FRAMES as usize],
}
impl<T: Pixel> ReferenceFramesSet<T> {
pub fn new() -> Self {
Self { frames: Default::default(), deblock: Default::default() }
}
}
#[wasm_bindgen]
#[derive(ArgEnum, Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
#[repr(C)]
pub enum Tune {
Psnr,
Psychovisual,
}
impl Default for Tune {
fn default() -> Self {
Tune::Psychovisual
}
}
const FRAME_ID_LENGTH: u32 = 15;
const DELTA_FRAME_ID_LENGTH: u32 = 14;
#[derive(Copy, Clone, Debug)]
pub struct Sequence {
// OBU Sequence header of AV1
pub profile: u8,
pub num_bits_width: u32,
pub num_bits_height: u32,
pub bit_depth: usize,
pub chroma_sampling: ChromaSampling,
pub chroma_sample_position: ChromaSamplePosition,
pub pixel_range: PixelRange,
pub color_description: Option<ColorDescription>,
pub mastering_display: Option<MasteringDisplay>,
pub content_light: Option<ContentLight>,
pub max_frame_width: u32,
pub max_frame_height: u32,
pub frame_id_numbers_present_flag: bool,
pub frame_id_length: u32,
pub delta_frame_id_length: u32,
pub use_128x128_superblock: bool,
pub order_hint_bits_minus_1: u32,
pub force_screen_content_tools: u32, // 0 - force off
// 1 - force on
// 2 - adaptive
pub force_integer_mv: u32, // 0 - Not to force. MV can be in 1/4 or 1/8
// 1 - force to integer
// 2 - adaptive
pub still_picture: bool, // Video is a single frame still picture
pub reduced_still_picture_hdr: bool, // Use reduced header for still picture
pub enable_filter_intra: bool, // enables/disables filter_intra
pub enable_intra_edge_filter: bool, // enables/disables corner/edge filtering and upsampling
pub enable_interintra_compound: bool, // enables/disables interintra_compound
pub enable_masked_compound: bool, // enables/disables masked compound
pub enable_dual_filter: bool, // 0 - disable dual interpolation filter
// 1 - enable vert/horiz filter selection
pub enable_order_hint: bool, // 0 - disable order hint, and related tools
// jnt_comp, ref_frame_mvs, frame_sign_bias
// if 0, enable_jnt_comp and
// enable_ref_frame_mvs must be set zs 0.
pub enable_jnt_comp: bool, // 0 - disable joint compound modes
// 1 - enable it
pub enable_ref_frame_mvs: bool, // 0 - disable ref frame mvs
// 1 - enable it
pub enable_warped_motion: bool, // 0 - disable warped motion for sequence
// 1 - enable it for the sequence
pub enable_superres: bool, // 0 - Disable superres for the sequence, and disable
// transmitting per-frame superres enabled flag.
// 1 - Enable superres for the sequence, and also
// enable per-frame flag to denote if superres is
// enabled for that frame.
pub enable_cdef: bool, // To turn on/off CDEF
pub enable_restoration: bool, // To turn on/off loop restoration
pub enable_large_lru: bool, // To turn on/off larger-than-superblock loop restoration units
pub enable_delayed_loopfilter_rdo: bool, // allow encoder to delay loop filter RDO/coding until after frame reconstruciton is complete
pub operating_points_cnt_minus_1: usize,
pub operating_point_idc: [u16; MAX_NUM_OPERATING_POINTS],
pub display_model_info_present_flag: bool,
pub decoder_model_info_present_flag: bool,
pub level: [[usize; 2]; MAX_NUM_OPERATING_POINTS], // minor, major
pub tier: [usize; MAX_NUM_OPERATING_POINTS], // seq_tier in the spec. One bit: 0
// or 1.
pub film_grain_params_present: bool,
pub timing_info_present: bool,
pub tiling: TilingInfo,
pub time_base: Rational,
}
impl Sequence {
pub fn new(config: &EncoderConfig) -> Sequence {
let width_bits = 32 - (config.width as u32).leading_zeros();
let height_bits = 32 - (config.height as u32).leading_zeros();
assert!(width_bits <= 16);
assert!(height_bits <= 16);
let profile = if config.bit_depth == 12
|| config.chroma_sampling == ChromaSampling::Cs422
{
2
} else if config.chroma_sampling == ChromaSampling::Cs444 {
1
} else {
0
};
let mut operating_point_idc: [u16; MAX_NUM_OPERATING_POINTS] =
[0; MAX_NUM_OPERATING_POINTS];
let mut level: [[usize; 2]; MAX_NUM_OPERATING_POINTS] =
[[1, 2]; MAX_NUM_OPERATING_POINTS];
let mut tier: [usize; MAX_NUM_OPERATING_POINTS] =
[0; MAX_NUM_OPERATING_POINTS];
for i in 0..MAX_NUM_OPERATING_POINTS {
operating_point_idc[i] = 0;
level[i][0] = 1; // minor
level[i][1] = 2; // major
tier[i] = 0;
}
// Restoration filters are not useful for very small frame sizes,
// so disable them in that case.
let enable_restoration_filters = config.width >= 32 && config.height >= 32;
let use_128x128_superblock = false;
let frame_rate = config.frame_rate();
let sb_size_log2 = Self::sb_size_log2(use_128x128_superblock);
let mut tiling = TilingInfo::from_target_tiles(
sb_size_log2,
config.width,
config.height,
frame_rate,
TilingInfo::tile_log2(1, config.tile_cols).unwrap(),
TilingInfo::tile_log2(1, config.tile_rows).unwrap(),
config.chroma_sampling == ChromaSampling::Cs422,
);
if config.tiles > 0 {
let mut tile_rows_log2 = 0;
let mut tile_cols_log2 = 0;
while (tile_rows_log2 < tiling.max_tile_rows_log2)
|| (tile_cols_log2 < tiling.max_tile_cols_log2)
{
tiling = TilingInfo::from_target_tiles(
sb_size_log2,
config.width,
config.height,
frame_rate,
tile_cols_log2,
tile_rows_log2,
config.chroma_sampling == ChromaSampling::Cs422,
);
if tiling.rows * tiling.cols >= config.tiles {
break;
};
if ((tiling.tile_height_sb >= tiling.tile_width_sb)
&& (tiling.tile_rows_log2 < tiling.max_tile_rows_log2))
|| (tile_cols_log2 >= tiling.max_tile_cols_log2)
{
tile_rows_log2 += 1;
} else {
tile_cols_log2 += 1;
}
}
}
Sequence {
tiling,
profile,
num_bits_width: width_bits,
num_bits_height: height_bits,
bit_depth: config.bit_depth,
chroma_sampling: config.chroma_sampling,
chroma_sample_position: config.chroma_sample_position,
pixel_range: config.pixel_range,
color_description: config.color_description,
mastering_display: config.mastering_display,
content_light: config.content_light,
max_frame_width: config.width as u32,
max_frame_height: config.height as u32,
frame_id_numbers_present_flag: false,
frame_id_length: FRAME_ID_LENGTH,
delta_frame_id_length: DELTA_FRAME_ID_LENGTH,
use_128x128_superblock,
order_hint_bits_minus_1: 5,
force_screen_content_tools: if config.still_picture { 2 } else { 0 },
force_integer_mv: 2,
still_picture: config.still_picture,
reduced_still_picture_hdr: config.still_picture,
enable_filter_intra: false,
enable_intra_edge_filter: true,
enable_interintra_compound: false,
enable_masked_compound: false,
enable_dual_filter: false,
enable_order_hint: !config.still_picture,
enable_jnt_comp: false,
enable_ref_frame_mvs: false,
enable_warped_motion: false,
enable_superres: false,
enable_cdef: config.speed_settings.cdef && enable_restoration_filters,
enable_restoration: config.speed_settings.lrf
&& enable_restoration_filters,
enable_large_lru: true,
enable_delayed_loopfilter_rdo: true,
operating_points_cnt_minus_1: 0,
operating_point_idc,
display_model_info_present_flag: false,
decoder_model_info_present_flag: false,
level,
tier,
film_grain_params_present: false,
timing_info_present: config.enable_timing_info,
time_base: config.time_base,
}
}
pub const fn get_relative_dist(&self, a: u32, b: u32) -> i32 {
let diff = a as i32 - b as i32;
let m = 1 << self.order_hint_bits_minus_1;
(diff & (m - 1)) - (diff & m)
}
pub fn get_skip_mode_allowed<T: Pixel>(
&self, fi: &FrameInvariants<T>, inter_cfg: &InterConfig,
reference_select: bool,
) -> bool {
if fi.intra_only || !reference_select || !self.enable_order_hint {
return false;
}
let mut forward_idx: isize = -1;
let mut backward_idx: isize = -1;
let mut forward_hint = 0;
let mut backward_hint = 0;
for i in inter_cfg.allowed_ref_frames().iter().map(|rf| rf.to_index()) {
if let Some(ref rec) = fi.rec_buffer.frames[fi.ref_frames[i] as usize] {
let ref_hint = rec.order_hint;
if self.get_relative_dist(ref_hint, fi.order_hint) < 0 {
if forward_idx < 0
|| self.get_relative_dist(ref_hint, forward_hint) > 0
{
forward_idx = i as isize;
forward_hint = ref_hint;
}
} else if self.get_relative_dist(ref_hint, fi.order_hint) > 0
&& (backward_idx < 0
|| self.get_relative_dist(ref_hint, backward_hint) > 0)
{
backward_idx = i as isize;
backward_hint = ref_hint;
}
}
}
if forward_idx < 0 {
false
} else if backward_idx >= 0 {
// set skip_mode_frame
true
} else {
let mut second_forward_idx: isize = -1;
let mut second_forward_hint = 0;
for i in inter_cfg.allowed_ref_frames().iter().map(|rf| rf.to_index()) {
if let Some(ref rec) = fi.rec_buffer.frames[fi.ref_frames[i] as usize]
{
let ref_hint = rec.order_hint;
if self.get_relative_dist(ref_hint, forward_hint) < 0
&& (second_forward_idx < 0
|| self.get_relative_dist(ref_hint, second_forward_hint) > 0)
{
second_forward_idx = i as isize;
second_forward_hint = ref_hint;
}
}
}
// TODO: Set skip_mode_frame, when second_forward_idx is not less than 0.
second_forward_idx >= 0
}
}
#[inline(always)]
const fn sb_size_log2(use_128x128_superblock: bool) -> usize {
6 + (use_128x128_superblock as usize)
}
}
#[derive(Debug, Clone)]
pub struct FrameState<T: Pixel> {
pub sb_size_log2: usize,
pub input: Arc<Frame<T>>,
pub input_hres: Arc<Plane<T>>, // half-resolution version of input luma
pub input_qres: Arc<Plane<T>>, // quarter-resolution version of input luma
pub rec: Arc<Frame<T>>,
pub cdfs: CDFContext,
pub context_update_tile_id: usize, // tile id used for the CDFontext
pub max_tile_size_bytes: u32,
pub deblock: DeblockState,
pub segmentation: SegmentationState,
pub restoration: RestorationState,
// Because we only reference these within a tile context,
// these are stored per-tile for easier access.
pub frame_me_stats: Arc<[FrameMEStats; REF_FRAMES as usize]>,
pub enc_stats: EncoderStats,
}
impl<T: Pixel> FrameState<T> {
pub fn new(fi: &FrameInvariants<T>) -> Self {
// TODO(negge): Use fi.cfg.chroma_sampling when we store VideoDetails in FrameInvariants
FrameState::new_with_frame(
fi,
Arc::new(Frame::new(fi.width, fi.height, fi.sequence.chroma_sampling)),
)
}
pub fn new_with_frame(
fi: &FrameInvariants<T>, frame: Arc<Frame<T>>,
) -> Self {
let rs = RestorationState::new(fi, &frame);
let luma_width = frame.planes[0].cfg.width;
let luma_height = frame.planes[0].cfg.height;
let hres = frame.planes[0].downsampled(fi.width, fi.height);
let qres = hres.downsampled(fi.width, fi.height);
Self {
sb_size_log2: fi.sb_size_log2(),
input: frame,
input_hres: Arc::new(hres),
input_qres: Arc::new(qres),
rec: Arc::new(Frame::new(
luma_width,
luma_height,
fi.sequence.chroma_sampling,
)),
cdfs: CDFContext::new(0),
context_update_tile_id: 0,
max_tile_size_bytes: 0,
deblock: Default::default(),
segmentation: Default::default(),
restoration: rs,
frame_me_stats: FrameMEStats::new_arc_array(fi.w_in_b, fi.h_in_b),
enc_stats: Default::default(),
}
}
#[inline(always)]
pub fn as_tile_state_mut(&mut self) -> TileStateMut<'_, T> {
let PlaneConfig { width, height, .. } = self.rec.planes[0].cfg;
let sbo_0 = PlaneSuperBlockOffset(SuperBlockOffset { x: 0, y: 0 });
TileStateMut::new(self, sbo_0, self.sb_size_log2, width, height)
}
}
#[derive(Copy, Clone, Debug)]
pub struct DeblockState {
pub levels: [u8; MAX_PLANES + 1], // Y vertical edges, Y horizontal, U, V
pub sharpness: u8,
pub deltas_enabled: bool,
pub delta_updates_enabled: bool,
pub ref_deltas: [i8; REF_FRAMES],
pub mode_deltas: [i8; 2],
pub block_deltas_enabled: bool,
pub block_delta_shift: u8,
pub block_delta_multi: bool,
}
impl Default for DeblockState {
fn default() -> Self {
DeblockState {
levels: [8, 8, 4, 4],
sharpness: 0,
deltas_enabled: false, // requires delta_q_enabled
delta_updates_enabled: false,
ref_deltas: [1, 0, 0, 0, 0, -1, -1, -1],
mode_deltas: [0, 0],
block_deltas_enabled: false,
block_delta_shift: 0,
block_delta_multi: false,
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct SegmentationState {
pub enabled: bool,
pub update_data: bool,
pub update_map: bool,
pub preskip: bool,
pub last_active_segid: u8,
pub features: [[bool; SegLvl::SEG_LVL_MAX as usize]; 8],
pub data: [[i16; SegLvl::SEG_LVL_MAX as usize]; 8],
}
impl Default for SegmentationState {
fn default() -> Self {
SegmentationState {
enabled: false,
update_data: false,
update_map: false,
preskip: false,
last_active_segid: 0,
features: [[false; SegLvl::SEG_LVL_MAX as usize]; 8],
data: [[0; SegLvl::SEG_LVL_MAX as usize]; 8],
}
}
}
// Frame Invariants are invariant inside a frame
#[allow(dead_code)]
#[derive(Debug, Clone)]
pub struct FrameInvariants<T: Pixel> {
pub sequence: Arc<Sequence>,
pub config: Arc<EncoderConfig>,
pub width: usize,
pub height: usize,
pub render_width: u32,
pub render_height: u32,
pub frame_size_override_flag: bool,
pub render_and_frame_size_different: bool,
pub sb_width: usize,
pub sb_height: usize,
pub w_in_b: usize,
pub h_in_b: usize,
pub input_frameno: u64,
pub order_hint: u32,
pub show_frame: bool,
pub showable_frame: bool,
pub error_resilient: bool,
pub intra_only: bool,
pub allow_high_precision_mv: bool,
pub frame_type: FrameType,
pub show_existing_frame: bool,
pub frame_to_show_map_idx: u32,
pub use_reduced_tx_set: bool,
pub reference_mode: ReferenceMode,
pub use_prev_frame_mvs: bool,
pub partition_range: PartitionRange,
pub globalmv_transformation_type: [GlobalMVMode; INTER_REFS_PER_FRAME],
pub num_tg: usize,
pub large_scale_tile: bool,
pub disable_cdf_update: bool,
pub allow_screen_content_tools: u32,
pub force_integer_mv: u32,
pub primary_ref_frame: u32,
pub refresh_frame_flags: u32, // a bitmask that specifies which
// reference frame slots will be updated with the current frame
// after it is decoded.
pub allow_intrabc: bool,
pub use_ref_frame_mvs: bool,
pub is_filter_switchable: bool,
pub is_motion_mode_switchable: bool,
pub disable_frame_end_update_cdf: bool,
pub allow_warped_motion: bool,
pub cdef_search_method: CDEFSearchMethod,
pub cdef_damping: u8,
pub cdef_bits: u8,
pub cdef_y_strengths: [u8; 8],
pub cdef_uv_strengths: [u8; 8],
pub delta_q_present: bool,
pub ref_frames: [u8; INTER_REFS_PER_FRAME],
pub ref_frame_sign_bias: [bool; INTER_REFS_PER_FRAME],
pub rec_buffer: ReferenceFramesSet<T>,
pub base_q_idx: u8,
pub dc_delta_q: [i8; 3],
pub ac_delta_q: [i8; 3],
pub lambda: f64,
pub me_lambda: f64,
pub dist_scale: [f64; 3],
pub me_range_scale: u8,
pub use_tx_domain_distortion: bool,
pub use_tx_domain_rate: bool,
pub idx_in_group_output: u64,
pub pyramid_level: u64,
pub enable_early_exit: bool,
pub tx_mode_select: bool,
pub enable_inter_txfm_split: bool,
pub default_filter: FilterMode,
/// If true, this `FrameInvariants` corresponds to an invalid frame and
/// should be ignored. Invalid frames occur when a subgop is prematurely
/// ended, for example, by a key frame or the end of the video.
pub invalid: bool,
/// Motion vectors to the _original_ reference frames (not reconstructed).
/// Used for lookahead purposes.
pub lookahead_me_stats: Arc<[FrameMEStats; REF_FRAMES as usize]>,
/// The lookahead version of `rec_buffer`, used for storing and propagating
/// the original reference frames (rather than reconstructed ones). The
/// lookahead uses both `rec_buffer` and `lookahead_rec_buffer`, where
/// `rec_buffer` contains the current frame's reference frames and
/// `lookahead_rec_buffer` contains the next frame's reference frames.
pub lookahead_rec_buffer: ReferenceFramesSet<T>,
/// Frame width in importance blocks.
pub w_in_imp_b: usize,
/// Frame height in importance blocks.
pub h_in_imp_b: usize,
/// Intra prediction cost estimations for each importance block.
pub lookahead_intra_costs: Box<[u32]>,
/// Future importance values for each importance block. That is, a value
/// indicating how much future frames depend on the block (for example, via
/// inter-prediction).
pub block_importances: Box<[f32]>,
/// Pre-computed distortion_scale.
pub distortion_scales: Box<[DistortionScale]>,
/// Pre-computed activity_scale.
pub activity_scales: Box<[DistortionScale]>,
/// Target CPU feature level.
pub cpu_feature_level: crate::cpu_features::CpuFeatureLevel,
pub activity_mask: ActivityMask,
pub enable_segmentation: bool,
}
pub(crate) const fn pos_to_lvl(pos: u64, pyramid_depth: u64) -> u64 {
// Derive level within pyramid for a frame with a given coding order position
// For example, with a pyramid of depth 2, the 2 least significant bits of the
// position determine the level:
// 00 -> 0
// 01 -> 2
// 10 -> 1
// 11 -> 2
pyramid_depth - (pos | (1 << pyramid_depth)).trailing_zeros() as u64
}
impl<T: Pixel> FrameInvariants<T> {
#[allow(clippy::erasing_op, clippy::identity_op)]
pub fn new(config: Arc<EncoderConfig>, sequence: Arc<Sequence>) -> Self {
assert!(
sequence.bit_depth <= mem::size_of::<T>() * 8,
"bit depth cannot fit into u8"
);
let (width, height) = (config.width, config.height);
let frame_size_override_flag = width as u32 != sequence.max_frame_width
|| height as u32 != sequence.max_frame_height;
let (render_width, render_height) = config.render_size();
let render_and_frame_size_different =
render_width != width || render_height != height;
let use_reduced_tx_set = config.speed_settings.reduced_tx_set;
let use_tx_domain_distortion =
config.tune == Tune::Psnr && config.speed_settings.tx_domain_distortion;
let use_tx_domain_rate = config.speed_settings.tx_domain_rate;
let w_in_b = 2 * config.width.align_power_of_two_and_shift(3); // MiCols, ((width+7)/8)<<3 >> MI_SIZE_LOG2
let h_in_b = 2 * config.height.align_power_of_two_and_shift(3); // MiRows, ((height+7)/8)<<3 >> MI_SIZE_LOG2
// Width and height are padded to 8×8 block size.
let w_in_imp_b = w_in_b / 2;
let h_in_imp_b = h_in_b / 2;
Self {
width,
height,
render_width: render_width as u32,
render_height: render_height as u32,
frame_size_override_flag,
render_and_frame_size_different,
sb_width: width.align_power_of_two_and_shift(6),
sb_height: height.align_power_of_two_and_shift(6),
w_in_b,
h_in_b,
input_frameno: 0,
order_hint: 0,
show_frame: true,
showable_frame: !sequence.reduced_still_picture_hdr,
error_resilient: false,
intra_only: true,
allow_high_precision_mv: false,
frame_type: FrameType::KEY,
show_existing_frame: false,
frame_to_show_map_idx: 0,
use_reduced_tx_set,
reference_mode: ReferenceMode::SINGLE,
use_prev_frame_mvs: false,
partition_range: config.speed_settings.partition_range,
globalmv_transformation_type: [GlobalMVMode::IDENTITY;
INTER_REFS_PER_FRAME],
num_tg: 1,
large_scale_tile: false,
disable_cdf_update: false,
allow_screen_content_tools: sequence.force_screen_content_tools,
force_integer_mv: 1,
primary_ref_frame: PRIMARY_REF_NONE,
refresh_frame_flags: ALL_REF_FRAMES_MASK,
allow_intrabc: false,
use_ref_frame_mvs: false,
is_filter_switchable: false,
is_motion_mode_switchable: false, // 0: only the SIMPLE motion mode will be used.
disable_frame_end_update_cdf: sequence.reduced_still_picture_hdr,
allow_warped_motion: false,
cdef_search_method: CDEFSearchMethod::PickFromQ,
cdef_damping: 3,
cdef_bits: 0,
cdef_y_strengths: [
0 * 4 + 0,
1 * 4 + 0,
2 * 4 + 1,
3 * 4 + 1,
5 * 4 + 2,
7 * 4 + 3,
10 * 4 + 3,
13 * 4 + 3,
],
cdef_uv_strengths: [
0 * 4 + 0,
1 * 4 + 0,
2 * 4 + 1,
3 * 4 + 1,
5 * 4 + 2,
7 * 4 + 3,
10 * 4 + 3,
13 * 4 + 3,
],
delta_q_present: false,
ref_frames: [0; INTER_REFS_PER_FRAME],
ref_frame_sign_bias: [false; INTER_REFS_PER_FRAME],
rec_buffer: ReferenceFramesSet::new(),
base_q_idx: config.quantizer as u8,
dc_delta_q: [0; 3],
ac_delta_q: [0; 3],
lambda: 0.0,
dist_scale: [1.0; 3],
me_lambda: 0.0,
me_range_scale: 1,
use_tx_domain_distortion,
use_tx_domain_rate,
idx_in_group_output: 0,
pyramid_level: 0,
enable_early_exit: true,
tx_mode_select: false,
default_filter: FilterMode::REGULAR,
invalid: false,
lookahead_me_stats: FrameMEStats::new_arc_array(w_in_b, h_in_b),
lookahead_rec_buffer: ReferenceFramesSet::new(),
w_in_imp_b,
h_in_imp_b,
// This is never used before it is assigned
lookahead_intra_costs: Box::new([]),
// dynamic allocation: once per frame
block_importances: vec![0.; w_in_imp_b * h_in_imp_b].into_boxed_slice(),
distortion_scales: vec![
DistortionScale::default();
w_in_imp_b * h_in_imp_b
]
.into_boxed_slice(),
activity_scales: vec![
DistortionScale::default();
w_in_imp_b * h_in_imp_b
]
.into_boxed_slice(),
cpu_feature_level: Default::default(),
activity_mask: Default::default(),
enable_segmentation: config.speed_settings.segmentation
!= SegmentationLevel::Disabled,
enable_inter_txfm_split: config.speed_settings.enable_inter_tx_split,
sequence,
config,
}
}
pub fn new_key_frame(
config: Arc<EncoderConfig>, sequence: Arc<Sequence>,
gop_input_frameno_start: u64,
) -> Self {
let tx_mode_select = config.speed_settings.rdo_tx_decision;
let mut fi = Self::new(config, sequence);
fi.input_frameno = gop_input_frameno_start;
fi.tx_mode_select = tx_mode_select;
fi
}
/// Returns the created FrameInvariants along with a bool indicating success.
/// This interface provides simpler usage, because we always need the produced
/// FrameInvariants regardless of success or failure.
pub(crate) fn new_inter_frame(
previous_fi: &Self, inter_cfg: &InterConfig, gop_input_frameno_start: u64,
output_frameno_in_gop: u64, next_keyframe_input_frameno: u64,
error_resilient: bool,
) -> Self {
let mut fi = previous_fi.clone();
fi.intra_only = false;
fi.force_integer_mv = 0; // note: should be 1 if fi.intra_only is true
fi.idx_in_group_output =
inter_cfg.get_idx_in_group_output(output_frameno_in_gop);
fi.tx_mode_select = fi.enable_inter_txfm_split;
fi.order_hint =
inter_cfg.get_order_hint(output_frameno_in_gop, fi.idx_in_group_output);
let input_frameno = inter_cfg
.get_input_frameno(output_frameno_in_gop, gop_input_frameno_start);
if input_frameno >= next_keyframe_input_frameno {
fi.frame_type = FrameType::INTER;
fi.show_existing_frame = false;
fi.show_frame = false;
fi.invalid = true;
return fi;
} else {
fi.invalid = false;
}
fi.pyramid_level = inter_cfg.get_level(fi.idx_in_group_output);
fi.frame_type = if (inter_cfg.switch_frame_interval > 0)
&& (output_frameno_in_gop % inter_cfg.switch_frame_interval == 0)
&& (fi.pyramid_level == 0)
{
FrameType::SWITCH
} else {
FrameType::INTER
};
fi.error_resilient =
if fi.frame_type == FrameType::SWITCH { true } else { error_resilient };
fi.frame_size_override_flag = if fi.frame_type == FrameType::SWITCH {
true
} else if fi.sequence.reduced_still_picture_hdr {
false
} else if fi.frame_type == FrameType::INTER
&& !fi.error_resilient
&& fi.render_and_frame_size_different
{
// force frame_size_with_refs() code path if render size != frame size
true
} else {
fi.width as u32 != fi.sequence.max_frame_width
|| fi.height as u32 != fi.sequence.max_frame_height
};
// this is the slot that the current frame is going to be saved into
let slot_idx = inter_cfg.get_slot_idx(fi.pyramid_level, fi.order_hint);
fi.show_frame = inter_cfg.get_show_frame(fi.idx_in_group_output);
fi.show_existing_frame =
inter_cfg.get_show_existing_frame(fi.idx_in_group_output);
fi.frame_to_show_map_idx = slot_idx;
fi.refresh_frame_flags = if fi.frame_type == FrameType::SWITCH {
ALL_REF_FRAMES_MASK
} else if fi.show_existing_frame {
0
} else {
1 << slot_idx
};
let second_ref_frame =
if fi.idx_in_group_output == 0 { LAST2_FRAME } else { ALTREF_FRAME };
let ref_in_previous_group = LAST3_FRAME;
// reuse probability estimates from previous frames only in top level frames
fi.primary_ref_frame = if fi.error_resilient || (fi.pyramid_level > 2) {
PRIMARY_REF_NONE
} else {
(ref_in_previous_group.to_index()) as u32
};
if fi.pyramid_level == 0 {
// level 0 has no forward references
// default to last P frame
fi.ref_frames = [
// calculations done relative to the slot_idx for this frame.
// the last four frames can be found by subtracting from the current slot_idx
// add 4 to prevent underflow
// TODO: maybe use order_hint here like in get_slot_idx?
// this is the previous P frame
(slot_idx + 4 - 1) as u8 % 4
; INTER_REFS_PER_FRAME];
if inter_cfg.multiref {
// use the second-previous p frame as a second reference frame
fi.ref_frames[second_ref_frame.to_index()] =
(slot_idx + 4 - 2) as u8 % 4;
}
} else {
debug_assert!(inter_cfg.multiref);
// fill in defaults
// default to backwards reference in lower level
fi.ref_frames = [{
let oh = fi.order_hint
- (inter_cfg.group_input_len as u32 >> fi.pyramid_level);
let lvl1 = pos_to_lvl(oh as u64, inter_cfg.pyramid_depth);
if lvl1 == 0 {
((oh >> inter_cfg.pyramid_depth) % 4) as u8
} else {
3 + lvl1 as u8
}
}; INTER_REFS_PER_FRAME];
// use forward reference in lower level as a second reference frame
fi.ref_frames[second_ref_frame.to_index()] = {
let oh = fi.order_hint
+ (inter_cfg.group_input_len as u32 >> fi.pyramid_level);
let lvl2 = pos_to_lvl(oh as u64, inter_cfg.pyramid_depth);
if lvl2 == 0 {
((oh >> inter_cfg.pyramid_depth) % 4) as u8
} else {
3 + lvl2 as u8
}
};
// use a reference to the previous frame in the same level
// (horizontally) as a third reference
fi.ref_frames[ref_in_previous_group.to_index()] = slot_idx as u8;
}
fi.set_ref_frame_sign_bias();
fi.reference_mode = if inter_cfg.multiref && fi.idx_in_group_output != 0 {
ReferenceMode::SELECT
} else {
ReferenceMode::SINGLE
};
fi.input_frameno = input_frameno;
fi.me_range_scale = (inter_cfg.group_input_len >> fi.pyramid_level) as u8;
fi
}
pub fn set_ref_frame_sign_bias(&mut self) {
for i in 0..INTER_REFS_PER_FRAME {
self.ref_frame_sign_bias[i] = if !self.sequence.enable_order_hint {
false
} else if let Some(ref rec) =
self.rec_buffer.frames[self.ref_frames[i] as usize]
{
let hint = rec.order_hint;
self.sequence.get_relative_dist(hint, self.order_hint) > 0
} else {
false
};
}
}
pub fn get_frame_subtype(&self) -> usize {
if self.frame_type == FrameType::KEY {
FRAME_SUBTYPE_I
} else {
FRAME_SUBTYPE_P + (self.pyramid_level as usize)
}
}
fn pick_strength_from_q(&mut self, qps: &QuantizerParameters) {
self.cdef_damping = 3 + (self.base_q_idx >> 6);
let q = bexp64(qps.log_target_q as i64 + q57(QSCALE)) as f32;
/* These coefficients were trained on libaom. */
let (y_f1, y_f2, uv_f1, uv_f2) = if !self.intra_only {
(
poly2(q, -0.0000023593946_f32, 0.0068615186_f32, 0.02709886_f32, 15),
poly2(q, -0.00000057629734_f32, 0.0013993345_f32, 0.03831067_f32, 3),
poly2(q, -0.0000007095069_f32, 0.0034628846_f32, 0.00887099_f32, 15),
poly2(q, 0.00000023874085_f32, 0.00028223585_f32, 0.05576307_f32, 3),
)
} else {
(
poly2(q, 0.0000033731974_f32, 0.008070594_f32, 0.0187634_f32, 15),
poly2(q, 0.0000029167343_f32, 0.0027798624_f32, 0.0079405_f32, 3),
poly2(q, -0.0000130790995_f32, 0.012892405_f32, -0.00748388_f32, 15),
poly2(q, 0.0000032651783_f32, 0.00035520183_f32, 0.00228092_f32, 3),
)
};
self.cdef_y_strengths[0] = (y_f1 * CDEF_SEC_STRENGTHS as i32 + y_f2) as u8;
self.cdef_uv_strengths[0] =
(uv_f1 * CDEF_SEC_STRENGTHS as i32 + uv_f2) as u8;
}
pub fn set_quantizers(&mut self, qps: &QuantizerParameters) {
self.base_q_idx = qps.ac_qi[0];
let base_q_idx = self.base_q_idx as i32;
for pi in 0..3 {
self.dc_delta_q[pi] = (qps.dc_qi[pi] as i32 - base_q_idx) as i8;
self.ac_delta_q[pi] = (qps.ac_qi[pi] as i32 - base_q_idx) as i8;
}
self.lambda =
qps.lambda * ((1 << (2 * (self.sequence.bit_depth - 8))) as f64);
self.me_lambda = self.lambda.sqrt();
self.dist_scale = qps.dist_scale;
match self.cdef_search_method {
CDEFSearchMethod::PickFromQ => {
self.pick_strength_from_q(qps);
}
// TODO: implement FastSearch and FullSearch
_ => unreachable!(),
}
}
#[inline(always)]
pub fn sb_size_log2(&self) -> usize {
self.sequence.tiling.sb_size_log2
}
}
impl<T: Pixel> fmt::Display for FrameInvariants<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Input Frame {} - {}", self.input_frameno, self.frame_type)
}
}
pub fn write_temporal_delimiter(packet: &mut dyn io::Write) -> io::Result<()> {
packet.write_all(&TEMPORAL_DELIMITER)?;