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aomedia/aom/178146264b7553436cd9e93571cc853dcb771eee/./av1/encoder/firstpass.c
blob: 194e80ec227be86ba71db482ca86591ed6182550 [file]
/*
* Copyright (c) 2016, Alliance for Open Media. 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.
*/
#include <limits.h>
#include <math.h>
#include <stdio.h>
#include "config/aom_dsp_rtcd.h"
#include "config/aom_scale_rtcd.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/variance.h"
#include "aom_mem/aom_mem.h"
#include "aom_ports/mem.h"
#include "aom_ports/system_state.h"
#include "aom_scale/aom_scale.h"
#include "aom_scale/yv12config.h"
#include "av1/common/entropymv.h"
#include "av1/common/quant_common.h"
#include "av1/common/reconinter.h" // av1_setup_dst_planes()
#include "av1/common/txb_common.h"
#include "av1/encoder/aq_variance.h"
#include "av1/encoder/av1_quantize.h"
#include "av1/encoder/block.h"
#include "av1/encoder/dwt.h"
#include "av1/encoder/encodeframe.h"
#include "av1/encoder/encodemb.h"
#include "av1/encoder/encodemv.h"
#include "av1/encoder/encoder.h"
#include "av1/encoder/encode_strategy.h"
#include "av1/encoder/extend.h"
#include "av1/encoder/firstpass.h"
#include "av1/encoder/mcomp.h"
#include "av1/encoder/rd.h"
#include "av1/encoder/reconinter_enc.h"
#define OUTPUT_FPF 0
#define FIRST_PASS_Q 10.0
#define INTRA_MODE_PENALTY 1024
#define NEW_MV_MODE_PENALTY 32
#define DARK_THRESH 64
#define NCOUNT_INTRA_THRESH 8192
#define NCOUNT_INTRA_FACTOR 3
static AOM_INLINE void output_stats(FIRSTPASS_STATS *stats,
struct aom_codec_pkt_list *pktlist) {
struct aom_codec_cx_pkt pkt;
pkt.kind = AOM_CODEC_STATS_PKT;
pkt.data.twopass_stats.buf = stats;
pkt.data.twopass_stats.sz = sizeof(FIRSTPASS_STATS);
if (pktlist != NULL) aom_codec_pkt_list_add(pktlist, &pkt);
// TEMP debug code
#if OUTPUT_FPF
{
FILE *fpfile;
fpfile = fopen("firstpass.stt", "a");
fprintf(fpfile,
"%12.0lf %12.4lf %12.0lf %12.0lf %12.0lf %12.4lf %12.4lf"
"%12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf %12.4lf"
"%12.4lf %12.4lf %12.0lf %12.0lf %12.0lf %12.4lf %12.4lf\n",
stats->frame, stats->weight, stats->intra_error, stats->coded_error,
stats->sr_coded_error, stats->pcnt_inter, stats->pcnt_motion,
stats->pcnt_second_ref, stats->pcnt_neutral, stats->intra_skip_pct,
stats->inactive_zone_rows, stats->inactive_zone_cols, stats->MVr,
stats->mvr_abs, stats->MVc, stats->mvc_abs, stats->MVrv,
stats->MVcv, stats->mv_in_out_count, stats->new_mv_count,
stats->count, stats->duration);
fclose(fpfile);
}
#endif
}
void av1_twopass_zero_stats(FIRSTPASS_STATS *section) {
section->frame = 0.0;
section->weight = 0.0;
section->intra_error = 0.0;
section->frame_avg_wavelet_energy = 0.0;
section->coded_error = 0.0;
section->sr_coded_error = 0.0;
section->pcnt_inter = 0.0;
section->pcnt_motion = 0.0;
section->pcnt_second_ref = 0.0;
section->pcnt_neutral = 0.0;
section->intra_skip_pct = 0.0;
section->inactive_zone_rows = 0.0;
section->inactive_zone_cols = 0.0;
section->MVr = 0.0;
section->mvr_abs = 0.0;
section->MVc = 0.0;
section->mvc_abs = 0.0;
section->MVrv = 0.0;
section->MVcv = 0.0;
section->mv_in_out_count = 0.0;
section->new_mv_count = 0.0;
section->count = 0.0;
section->duration = 1.0;
}
static AOM_INLINE void accumulate_stats(FIRSTPASS_STATS *section,
const FIRSTPASS_STATS *frame) {
section->frame += frame->frame;
section->weight += frame->weight;
section->intra_error += frame->intra_error;
section->frame_avg_wavelet_energy += frame->frame_avg_wavelet_energy;
section->coded_error += frame->coded_error;
section->sr_coded_error += frame->sr_coded_error;
section->pcnt_inter += frame->pcnt_inter;
section->pcnt_motion += frame->pcnt_motion;
section->pcnt_second_ref += frame->pcnt_second_ref;
section->pcnt_neutral += frame->pcnt_neutral;
section->intra_skip_pct += frame->intra_skip_pct;
section->inactive_zone_rows += frame->inactive_zone_rows;
section->inactive_zone_cols += frame->inactive_zone_cols;
section->MVr += frame->MVr;
section->mvr_abs += frame->mvr_abs;
section->MVc += frame->MVc;
section->mvc_abs += frame->mvc_abs;
section->MVrv += frame->MVrv;
section->MVcv += frame->MVcv;
section->mv_in_out_count += frame->mv_in_out_count;
section->new_mv_count += frame->new_mv_count;
section->count += frame->count;
section->duration += frame->duration;
}
void av1_init_first_pass(AV1_COMP *cpi) {
if (!cpi->lap_enabled) {
cpi->twopass.total_stats = aom_calloc(1, sizeof(FIRSTPASS_STATS));
av1_twopass_zero_stats(cpi->twopass.total_stats);
}
}
void av1_end_first_pass(AV1_COMP *cpi) {
if (cpi->twopass.total_stats)
output_stats(cpi->twopass.total_stats, cpi->output_pkt_list);
}
static aom_variance_fn_t get_block_variance_fn(BLOCK_SIZE bsize) {
switch (bsize) {
case BLOCK_8X8: return aom_mse8x8;
case BLOCK_16X8: return aom_mse16x8;
case BLOCK_8X16: return aom_mse8x16;
default: return aom_mse16x16;
}
}
static unsigned int get_prediction_error(BLOCK_SIZE bsize,
const struct buf_2d *src,
const struct buf_2d *ref) {
unsigned int sse;
const aom_variance_fn_t fn = get_block_variance_fn(bsize);
fn(src->buf, src->stride, ref->buf, ref->stride, &sse);
return sse;
}
#if CONFIG_AV1_HIGHBITDEPTH
static aom_variance_fn_t highbd_get_block_variance_fn(BLOCK_SIZE bsize,
int bd) {
switch (bd) {
default:
switch (bsize) {
case BLOCK_8X8: return aom_highbd_8_mse8x8;
case BLOCK_16X8: return aom_highbd_8_mse16x8;
case BLOCK_8X16: return aom_highbd_8_mse8x16;
default: return aom_highbd_8_mse16x16;
}
break;
case 10:
switch (bsize) {
case BLOCK_8X8: return aom_highbd_10_mse8x8;
case BLOCK_16X8: return aom_highbd_10_mse16x8;
case BLOCK_8X16: return aom_highbd_10_mse8x16;
default: return aom_highbd_10_mse16x16;
}
break;
case 12:
switch (bsize) {
case BLOCK_8X8: return aom_highbd_12_mse8x8;
case BLOCK_16X8: return aom_highbd_12_mse16x8;
case BLOCK_8X16: return aom_highbd_12_mse8x16;
default: return aom_highbd_12_mse16x16;
}
break;
}
}
static unsigned int highbd_get_prediction_error(BLOCK_SIZE bsize,
const struct buf_2d *src,
const struct buf_2d *ref,
int bd) {
unsigned int sse;
const aom_variance_fn_t fn = highbd_get_block_variance_fn(bsize, bd);
fn(src->buf, src->stride, ref->buf, ref->stride, &sse);
return sse;
}
#endif // CONFIG_AV1_HIGHBITDEPTH
// Refine the motion search range according to the frame dimension
// for first pass test.
static int get_search_range(const AV1_COMP *cpi) {
int sr = 0;
const int dim = AOMMIN(cpi->initial_width, cpi->initial_height);
while ((dim << sr) < MAX_FULL_PEL_VAL) ++sr;
return sr;
}
static AOM_INLINE void first_pass_motion_search(AV1_COMP *cpi, MACROBLOCK *x,
const MV *ref_mv,
FULLPEL_MV *best_mv,
int *best_motion_err) {
MACROBLOCKD *const xd = &x->e_mbd;
FULLPEL_MV start_mv = get_fullmv_from_mv(ref_mv);
int tmp_err;
const BLOCK_SIZE bsize = xd->mi[0]->sb_type;
aom_variance_fn_ptr_t v_fn_ptr = cpi->fn_ptr[bsize];
const int new_mv_mode_penalty = NEW_MV_MODE_PENALTY;
const int sr = get_search_range(cpi);
const int step_param = 3 + sr;
int cost_list[5];
const search_site_config *first_pass_search_sites = &cpi->ss_cfg[SS_CFG_FPF];
FULLPEL_MOTION_SEARCH_PARAMS ms_params;
av1_make_default_fullpel_ms_params(&ms_params, cpi, x, bsize, ref_mv,
first_pass_search_sites);
ms_params.search_method = NSTEP;
tmp_err = av1_full_pixel_search(start_mv, &ms_params, step_param, cost_list,
&x->best_mv.as_fullmv, NULL);
if (tmp_err < INT_MAX) {
tmp_err = av1_get_mvpred_sse(x, &x->best_mv.as_fullmv, ref_mv, &v_fn_ptr) +
new_mv_mode_penalty;
}
if (tmp_err < *best_motion_err) {
*best_motion_err = tmp_err;
*best_mv = x->best_mv.as_fullmv;
}
}
static BLOCK_SIZE get_bsize(const CommonModeInfoParams *const mi_params,
int mb_row, int mb_col) {
if (mi_size_wide[BLOCK_16X16] * mb_col + mi_size_wide[BLOCK_8X8] <
mi_params->mi_cols) {
return mi_size_wide[BLOCK_16X16] * mb_row + mi_size_wide[BLOCK_8X8] <
mi_params->mi_rows
? BLOCK_16X16
: BLOCK_16X8;
} else {
return mi_size_wide[BLOCK_16X16] * mb_row + mi_size_wide[BLOCK_8X8] <
mi_params->mi_rows
? BLOCK_8X16
: BLOCK_8X8;
}
}
static int find_fp_qindex(aom_bit_depth_t bit_depth) {
return av1_find_qindex(FIRST_PASS_Q, bit_depth, 0, QINDEX_RANGE - 1);
}
static double raw_motion_error_stdev(int *raw_motion_err_list,
int raw_motion_err_counts) {
int64_t sum_raw_err = 0;
double raw_err_avg = 0;
double raw_err_stdev = 0;
if (raw_motion_err_counts == 0) return 0;
int i;
for (i = 0; i < raw_motion_err_counts; i++) {
sum_raw_err += raw_motion_err_list[i];
}
raw_err_avg = (double)sum_raw_err / raw_motion_err_counts;
for (i = 0; i < raw_motion_err_counts; i++) {
raw_err_stdev += (raw_motion_err_list[i] - raw_err_avg) *
(raw_motion_err_list[i] - raw_err_avg);
}
// Calculate the standard deviation for the motion error of all the inter
// blocks of the 0,0 motion using the last source
// frame as the reference.
raw_err_stdev = sqrt(raw_err_stdev / raw_motion_err_counts);
return raw_err_stdev;
}
// This structure contains several key parameters to be accumulate for this
// frame.
typedef struct {
// Intra prediction error.
int64_t intra_error;
// Average wavelet energy computed using Discrete Wavelet Transform (DWT).
int64_t frame_avg_wavelet_energy;
// Best of intra pred error and inter pred error using last frame as ref.
int64_t coded_error;
// Best of intra pred error and inter pred error using golden frame as ref.
int64_t sr_coded_error;
// Best of intra pred error and inter pred error using altref frame as ref.
int64_t tr_coded_error;
// Count of motion vector.
int mv_count;
// Count of blocks that pick inter prediction (inter pred error is smaller
// than intra pred error).
int inter_count;
// Count of blocks that pick second ref (golden frame).
int second_ref_count;
// Count of blocks that pick third ref (altref frame).
int third_ref_count;
// Count of blocks where the inter and intra are very close and very low.
double neutral_count;
// Count of blocks where intra error is very small.
int intra_skip_count;
// Start row.
int image_data_start_row;
// Count of unique non-zero motion vectors.
int new_mv_count;
// Sum of inward motion vectors.
int sum_in_vectors;
// Sum of motion vector row.
int sum_mvr;
// Sum of motion vector column.
int sum_mvc;
// Sum of absolute value of motion vector row.
int sum_mvr_abs;
// Sum of absolute value of motion vector column.
int sum_mvc_abs;
// Sum of the square of motion vector row.
int64_t sum_mvrs;
// Sum of the square of motion vector column.
int64_t sum_mvcs;
// A factor calculated using intra pred error.
double intra_factor;
// A factor that measures brightness.
double brightness_factor;
} FRAME_STATS;
#define UL_INTRA_THRESH 50
#define INVALID_ROW -1
// Computes and returns the intra pred error of a block.
// intra pred error: sum of squared error of the intra predicted residual.
// Inputs:
// cpi: the encoder setting. Only a few params in it will be used.
// this_frame: the current frame buffer.
// tile: tile information (not used in first pass, already init to zero)
// mb_row: row index in the unit of first pass block size.
// mb_col: column index in the unit of first pass block size.
// y_offset: the offset of y frame buffer, indicating the starting point of
// the current block.
// uv_offset: the offset of u and v frame buffer, indicating the starting
// point of the current block.
// fp_block_size: first pass block size.
// qindex: quantization step size to encode the frame.
// stats: frame encoding stats.
// Modifies:
// stats->intra_skip_count
// stats->image_data_start_row
// stats->intra_factor
// stats->brightness_factor
// stats->intra_error
// stats->frame_avg_wavelet_energy
// Returns:
// this_intra_error.
static int firstpass_intra_prediction(
AV1_COMP *cpi, YV12_BUFFER_CONFIG *const this_frame,
const TileInfo *const tile, const int mb_row, const int mb_col,
const int y_offset, const int uv_offset, const BLOCK_SIZE fp_block_size,
const int qindex, FRAME_STATS *const stats) {
const AV1_COMMON *const cm = &cpi->common;
const CommonModeInfoParams *const mi_params = &cm->mi_params;
const SequenceHeader *const seq_params = &cm->seq_params;
MACROBLOCK *const x = &cpi->td.mb;
MACROBLOCKD *const xd = &x->e_mbd;
const int mb_scale = mi_size_wide[fp_block_size];
const int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row);
const int num_planes = av1_num_planes(cm);
const BLOCK_SIZE bsize = get_bsize(mi_params, mb_row, mb_col);
aom_clear_system_state();
set_mi_offsets(mi_params, xd, mb_row * mb_scale, mb_col * mb_scale);
xd->plane[0].dst.buf = this_frame->y_buffer + y_offset;
xd->plane[1].dst.buf = this_frame->u_buffer + uv_offset;
xd->plane[2].dst.buf = this_frame->v_buffer + uv_offset;
xd->left_available = (mb_col != 0);
xd->mi[0]->sb_type = bsize;
xd->mi[0]->ref_frame[0] = INTRA_FRAME;
set_mi_row_col(xd, tile, mb_row * mb_scale, mi_size_high[bsize],
mb_col * mb_scale, mi_size_wide[bsize], mi_params->mi_rows,
mi_params->mi_cols);
set_plane_n4(xd, mi_size_wide[bsize], mi_size_high[bsize], num_planes);
xd->mi[0]->segment_id = 0;
xd->lossless[xd->mi[0]->segment_id] = (qindex == 0);
xd->mi[0]->mode = DC_PRED;
xd->mi[0]->tx_size =
use_dc_pred ? (bsize >= fp_block_size ? TX_16X16 : TX_8X8) : TX_4X4;
av1_encode_intra_block_plane(cpi, x, bsize, 0, DRY_RUN_NORMAL, 0);
int this_intra_error = aom_get_mb_ss(x->plane[0].src_diff);
if (this_intra_error < UL_INTRA_THRESH) {
++stats->intra_skip_count;
} else if ((mb_col > 0) && (stats->image_data_start_row == INVALID_ROW)) {
stats->image_data_start_row = mb_row;
}
if (seq_params->use_highbitdepth) {
switch (seq_params->bit_depth) {
case AOM_BITS_8: break;
case AOM_BITS_10: this_intra_error >>= 4; break;
case AOM_BITS_12: this_intra_error >>= 8; break;
default:
assert(0 &&
"seq_params->bit_depth should be AOM_BITS_8, "
"AOM_BITS_10 or AOM_BITS_12");
return -1;
}
}
aom_clear_system_state();
double log_intra = log(this_intra_error + 1.0);
if (log_intra < 10.0) {
stats->intra_factor += 1.0 + ((10.0 - log_intra) * 0.05);
} else {
stats->intra_factor += 1.0;
}
int level_sample;
if (seq_params->use_highbitdepth) {
level_sample = CONVERT_TO_SHORTPTR(x->plane[0].src.buf)[0];
} else {
level_sample = x->plane[0].src.buf[0];
}
if ((level_sample < DARK_THRESH) && (log_intra < 9.0)) {
stats->brightness_factor += 1.0 + (0.01 * (DARK_THRESH - level_sample));
} else {
stats->brightness_factor += 1.0;
}
// Intrapenalty below deals with situations where the intra and inter
// error scores are very low (e.g. a plain black frame).
// We do not have special cases in first pass for 0,0 and nearest etc so
// all inter modes carry an overhead cost estimate for the mv.
// When the error score is very low this causes us to pick all or lots of
// INTRA modes and throw lots of key frames.
// This penalty adds a cost matching that of a 0,0 mv to the intra case.
this_intra_error += INTRA_MODE_PENALTY;
// Accumulate the intra error.
stats->intra_error += (int64_t)this_intra_error;
const int hbd = is_cur_buf_hbd(xd);
const int stride = x->plane[0].src.stride;
uint8_t *buf = x->plane[0].src.buf;
for (int r8 = 0; r8 < 2; ++r8) {
for (int c8 = 0; c8 < 2; ++c8) {
stats->frame_avg_wavelet_energy += av1_haar_ac_sad_8x8_uint8_input(
buf + c8 * 8 + r8 * 8 * stride, stride, hbd);
}
}
return this_intra_error;
}
// Updates the first pass stats of this frame.
// Input:
// cpi: the encoder setting. Only a few params in it will be used.
// stats: stats accumulated for this frame.
// raw_err_stdev: the statndard deviation for the motion error of all the
// inter blocks of the (0,0) motion using the last source
// frame as the reference.
// frame_number: current frame number.
// ts_duration: Duration of the frame / collection of frames.
// Updates:
// twopass->total_stats: the accumulated stats.
// twopass->stats_buf_ctx->stats_in_end: the pointer to the current stats,
// update its value and its position
// in the buffer.
static void update_firstpass_stats(AV1_COMP *cpi,
const FRAME_STATS *const stats,
const double raw_err_stdev,
const int frame_number,
const int64_t ts_duration) {
TWO_PASS *twopass = &cpi->twopass;
AV1_COMMON *const cm = &cpi->common;
const CommonModeInfoParams *const mi_params = &cm->mi_params;
FIRSTPASS_STATS *this_frame_stats = twopass->stats_buf_ctx->stats_in_end;
FIRSTPASS_STATS fps;
// The minimum error here insures some bit allocation to frames even
// in static regions. The allocation per MB declines for larger formats
// where the typical "real" energy per MB also falls.
// Initial estimate here uses sqrt(mbs) to define the min_err, where the
// number of mbs is proportional to the image area.
const int num_mbs = (cpi->oxcf.resize_mode != RESIZE_NONE) ? cpi->initial_mbs
: mi_params->MBs;
const double min_err = 200 * sqrt(num_mbs);
fps.weight = stats->intra_factor * stats->brightness_factor;
fps.frame = frame_number;
fps.coded_error = (double)(stats->coded_error >> 8) + min_err;
fps.sr_coded_error = (double)(stats->sr_coded_error >> 8) + min_err;
fps.tr_coded_error = (double)(stats->tr_coded_error >> 8) + min_err;
fps.intra_error = (double)(stats->intra_error >> 8) + min_err;
fps.frame_avg_wavelet_energy = (double)stats->frame_avg_wavelet_energy;
fps.count = 1.0;
fps.pcnt_inter = (double)stats->inter_count / num_mbs;
fps.pcnt_second_ref = (double)stats->second_ref_count / num_mbs;
fps.pcnt_third_ref = (double)stats->third_ref_count / num_mbs;
fps.pcnt_neutral = (double)stats->neutral_count / num_mbs;
fps.intra_skip_pct = (double)stats->intra_skip_count / num_mbs;
fps.inactive_zone_rows = (double)stats->image_data_start_row;
fps.inactive_zone_cols = (double)0; // TODO(paulwilkins): fix
fps.raw_error_stdev = raw_err_stdev;
if (stats->mv_count > 0) {
fps.MVr = (double)stats->sum_mvr / stats->mv_count;
fps.mvr_abs = (double)stats->sum_mvr_abs / stats->mv_count;
fps.MVc = (double)stats->sum_mvc / stats->mv_count;
fps.mvc_abs = (double)stats->sum_mvc_abs / stats->mv_count;
fps.MVrv = ((double)stats->sum_mvrs -
((double)stats->sum_mvr * stats->sum_mvr / stats->mv_count)) /
stats->mv_count;
fps.MVcv = ((double)stats->sum_mvcs -
((double)stats->sum_mvc * stats->sum_mvc / stats->mv_count)) /
stats->mv_count;
fps.mv_in_out_count = (double)stats->sum_in_vectors / (stats->mv_count * 2);
fps.new_mv_count = stats->new_mv_count;
fps.pcnt_motion = (double)stats->mv_count / num_mbs;
} else {
fps.MVr = 0.0;
fps.mvr_abs = 0.0;
fps.MVc = 0.0;
fps.mvc_abs = 0.0;
fps.MVrv = 0.0;
fps.MVcv = 0.0;
fps.mv_in_out_count = 0.0;
fps.new_mv_count = 0.0;
fps.pcnt_motion = 0.0;
}
// TODO(paulwilkins): Handle the case when duration is set to 0, or
// something less than the full time between subsequent values of
// cpi->source_time_stamp.
fps.duration = (double)ts_duration;
// We will store the stats inside the persistent twopass struct (and NOT the
// local variable 'fps'), and then cpi->output_pkt_list will point to it.
*this_frame_stats = fps;
output_stats(this_frame_stats, cpi->output_pkt_list);
if (twopass->total_stats != NULL) {
accumulate_stats(twopass->total_stats, &fps);
}
/*In the case of two pass, first pass uses it as a circular buffer,
* when LAP is enabled it is used as a linear buffer*/
twopass->stats_buf_ctx->stats_in_end++;
if ((cpi->oxcf.pass == 1) && (twopass->stats_buf_ctx->stats_in_end >=
twopass->stats_buf_ctx->stats_in_buf_end)) {
twopass->stats_buf_ctx->stats_in_end =
twopass->stats_buf_ctx->stats_in_start;
}
}
static void print_reconstruction_frame(
const YV12_BUFFER_CONFIG *const last_frame, int frame_number,
int do_print) {
if (!do_print) return;
char filename[512];
FILE *recon_file;
snprintf(filename, sizeof(filename), "enc%04d.yuv", frame_number);
if (frame_number == 0) {
recon_file = fopen(filename, "wb");
} else {
recon_file = fopen(filename, "ab");
}
fwrite(last_frame->buffer_alloc, last_frame->frame_size, 1, recon_file);
fclose(recon_file);
}
#define FIRST_PASS_ALT_REF_DISTANCE 16
void av1_first_pass(AV1_COMP *cpi, const int64_t ts_duration) {
MACROBLOCK *const x = &cpi->td.mb;
AV1_COMMON *const cm = &cpi->common;
const CommonModeInfoParams *const mi_params = &cm->mi_params;
CurrentFrame *const current_frame = &cm->current_frame;
const SequenceHeader *const seq_params = &cm->seq_params;
const int num_planes = av1_num_planes(cm);
MACROBLOCKD *const xd = &x->e_mbd;
const PICK_MODE_CONTEXT *ctx =
&cpi->td.pc_root[MAX_MIB_SIZE_LOG2 - MIN_MIB_SIZE_LOG2]->none;
MV lastmv = kZeroMv;
const int qindex = find_fp_qindex(seq_params->bit_depth);
// First pass coding proceeds in raster scan order with unit size of 16x16.
const BLOCK_SIZE fp_block_size = BLOCK_16X16;
const int fp_block_size_width = block_size_high[fp_block_size];
const int fp_block_size_height = block_size_wide[fp_block_size];
const int mb_scale = mi_size_wide[fp_block_size];
int *raw_motion_err_list;
int raw_motion_err_counts = 0;
CHECK_MEM_ERROR(cm, raw_motion_err_list,
aom_calloc(mi_params->mb_rows * mi_params->mb_cols,
sizeof(*raw_motion_err_list)));
// Tiling is ignored in the first pass.
TileInfo tile;
av1_tile_init(&tile, cm, 0, 0);
FRAME_STATS stats = { 0 };
stats.image_data_start_row = INVALID_ROW;
const YV12_BUFFER_CONFIG *const last_frame =
get_ref_frame_yv12_buf(cm, LAST_FRAME);
const YV12_BUFFER_CONFIG *golden_frame =
get_ref_frame_yv12_buf(cm, GOLDEN_FRAME);
const YV12_BUFFER_CONFIG *alt_ref_frame = NULL;
const int alt_ref_offset =
FIRST_PASS_ALT_REF_DISTANCE -
(current_frame->frame_number % FIRST_PASS_ALT_REF_DISTANCE);
if (alt_ref_offset < FIRST_PASS_ALT_REF_DISTANCE) {
const struct lookahead_entry *const alt_ref_frame_buffer =
av1_lookahead_peek(cpi->lookahead, alt_ref_offset,
cpi->compressor_stage);
if (alt_ref_frame_buffer != NULL) {
alt_ref_frame = &alt_ref_frame_buffer->img;
}
}
YV12_BUFFER_CONFIG *const this_frame = &cm->cur_frame->buf;
// First pass code requires valid last and new frame buffers.
assert(this_frame != NULL);
assert(frame_is_intra_only(cm) || (last_frame != NULL));
av1_setup_frame_size(cpi);
aom_clear_system_state();
set_mi_offsets(mi_params, xd, 0, 0);
xd->mi[0]->sb_type = fp_block_size;
// Do not use periodic key frames.
cpi->rc.frames_to_key = INT_MAX;
av1_set_quantizer(cpi, qindex);
av1_setup_block_planes(xd, seq_params->subsampling_x,
seq_params->subsampling_y, num_planes);
av1_setup_src_planes(x, cpi->source, 0, 0, num_planes, fp_block_size);
av1_setup_dst_planes(xd->plane, seq_params->sb_size, this_frame, 0, 0, 0,
num_planes);
if (!frame_is_intra_only(cm)) {
av1_setup_pre_planes(xd, 0, last_frame, 0, 0, NULL, num_planes);
}
set_mi_offsets(mi_params, xd, 0, 0);
// Don't store luma on the fist pass since chroma is not computed
xd->cfl.store_y = 0;
av1_frame_init_quantizer(cpi);
for (int i = 0; i < num_planes; ++i) {
x->plane[i].coeff = ctx->coeff[i];
x->plane[i].qcoeff = ctx->qcoeff[i];
x->plane[i].eobs = ctx->eobs[i];
x->plane[i].txb_entropy_ctx = ctx->txb_entropy_ctx[i];
xd->plane[i].dqcoeff = ctx->dqcoeff[i];
}
av1_init_mv_probs(cm);
av1_initialize_rd_consts(cpi);
const int src_y_stride = cpi->source->y_stride;
const int recon_y_stride = this_frame->y_stride;
const int recon_uv_stride = this_frame->uv_stride;
const int uv_mb_height =
fp_block_size_height >> (this_frame->y_height > this_frame->uv_height);
for (int mb_row = 0; mb_row < mi_params->mb_rows; ++mb_row) {
MV best_ref_mv = kZeroMv;
// Reset above block coeffs.
xd->up_available = (mb_row != 0);
int recon_yoffset = (mb_row * recon_y_stride * fp_block_size_height);
int src_yoffset = (mb_row * src_y_stride * fp_block_size_height);
int recon_uvoffset = (mb_row * recon_uv_stride * uv_mb_height);
int alt_ref_frame_yoffset =
(alt_ref_frame != NULL)
? mb_row * alt_ref_frame->y_stride * fp_block_size_height
: -1;
// Set up limit values for motion vectors to prevent them extending
// outside the UMV borders.
av1_set_mv_row_limits(mi_params, &x->mv_limits, (mb_row << 2),
(fp_block_size_height >> MI_SIZE_LOG2),
cpi->oxcf.border_in_pixels);
for (int mb_col = 0; mb_col < mi_params->mb_cols; ++mb_col) {
const BLOCK_SIZE bsize = get_bsize(mi_params, mb_row, mb_col);
int this_intra_error = firstpass_intra_prediction(
cpi, this_frame, &tile, mb_row, mb_col, recon_yoffset, recon_uvoffset,
fp_block_size, qindex, &stats);
// Set up limit values for motion vectors to prevent them extending
// outside the UMV borders.
av1_set_mv_col_limits(mi_params, &x->mv_limits, (mb_col << 2),
(fp_block_size_height >> MI_SIZE_LOG2),
cpi->oxcf.border_in_pixels);
if (!frame_is_intra_only(cm)) { // Do a motion search
int tmp_err, motion_error, raw_motion_error;
// Assume 0,0 motion with no mv overhead.
FULLPEL_MV mv = kZeroFullMv, tmp_mv = kZeroFullMv;
struct buf_2d unscaled_last_source_buf_2d;
xd->plane[0].pre[0].buf = last_frame->y_buffer + recon_yoffset;
#if CONFIG_AV1_HIGHBITDEPTH
if (is_cur_buf_hbd(xd)) {
motion_error = highbd_get_prediction_error(
bsize, &x->plane[0].src, &xd->plane[0].pre[0], xd->bd);
} else {
motion_error = get_prediction_error(bsize, &x->plane[0].src,
&xd->plane[0].pre[0]);
}
#else
motion_error =
get_prediction_error(bsize, &x->plane[0].src, &xd->plane[0].pre[0]);
#endif
// Compute the motion error of the 0,0 motion using the last source
// frame as the reference. Skip the further motion search on
// reconstructed frame if this error is small.
unscaled_last_source_buf_2d.buf =
cpi->unscaled_last_source->y_buffer + src_yoffset;
unscaled_last_source_buf_2d.stride =
cpi->unscaled_last_source->y_stride;
#if CONFIG_AV1_HIGHBITDEPTH
if (is_cur_buf_hbd(xd)) {
raw_motion_error = highbd_get_prediction_error(
bsize, &x->plane[0].src, &unscaled_last_source_buf_2d, xd->bd);
} else {
raw_motion_error = get_prediction_error(bsize, &x->plane[0].src,
&unscaled_last_source_buf_2d);
}
#else
raw_motion_error = get_prediction_error(bsize, &x->plane[0].src,
&unscaled_last_source_buf_2d);
#endif
// TODO(pengchong): Replace the hard-coded threshold
if (raw_motion_error > 25) {
// Test last reference frame using the previous best mv as the
// starting point (best reference) for the search.
first_pass_motion_search(cpi, x, &best_ref_mv, &mv, &motion_error);
// If the current best reference mv is not centered on 0,0 then do a
// 0,0 based search as well.
if (!is_zero_mv(&best_ref_mv)) {
tmp_err = INT_MAX;
first_pass_motion_search(cpi, x, &kZeroMv, &tmp_mv, &tmp_err);
if (tmp_err < motion_error) {
motion_error = tmp_err;
mv = tmp_mv;
}
}
// Motion search in 2nd reference frame.
int gf_motion_error;
if ((current_frame->frame_number > 1) && golden_frame != NULL) {
// Assume 0,0 motion with no mv overhead.
xd->plane[0].pre[0].buf = golden_frame->y_buffer + recon_yoffset;
#if CONFIG_AV1_HIGHBITDEPTH
if (is_cur_buf_hbd(xd)) {
gf_motion_error = highbd_get_prediction_error(
bsize, &x->plane[0].src, &xd->plane[0].pre[0], xd->bd);
} else {
gf_motion_error = get_prediction_error(bsize, &x->plane[0].src,
&xd->plane[0].pre[0]);
}
#else
gf_motion_error = get_prediction_error(bsize, &x->plane[0].src,
&xd->plane[0].pre[0]);
#endif
first_pass_motion_search(cpi, x, &kZeroMv, &tmp_mv,
&gf_motion_error);
if (gf_motion_error < motion_error &&
gf_motion_error < this_intra_error)
++stats.second_ref_count;
// Reset to last frame as reference buffer.
xd->plane[0].pre[0].buf = last_frame->y_buffer + recon_yoffset;
xd->plane[1].pre[0].buf = last_frame->u_buffer + recon_uvoffset;
xd->plane[2].pre[0].buf = last_frame->v_buffer + recon_uvoffset;
// In accumulating a score for the 2nd reference frame take the
// best of the motion predicted score and the intra coded error
// (just as will be done for) accumulation of "coded_error" for
// the last frame.
if (gf_motion_error < this_intra_error)
stats.sr_coded_error += gf_motion_error;
else
stats.sr_coded_error += this_intra_error;
} else {
gf_motion_error = motion_error;
stats.sr_coded_error += motion_error;
}
// Motion search in 3rd reference frame.
if (alt_ref_frame != NULL) {
xd->plane[0].pre[0].buf =
alt_ref_frame->y_buffer + alt_ref_frame_yoffset;
xd->plane[0].pre[0].stride = alt_ref_frame->y_stride;
int alt_motion_error;
#if CONFIG_AV1_HIGHBITDEPTH
if (is_cur_buf_hbd(xd)) {
alt_motion_error = highbd_get_prediction_error(
bsize, &x->plane[0].src, &xd->plane[0].pre[0], xd->bd);
} else {
alt_motion_error = get_prediction_error(bsize, &x->plane[0].src,
&xd->plane[0].pre[0]);
}
#else
alt_motion_error = get_prediction_error(bsize, &x->plane[0].src,
&xd->plane[0].pre[0]);
#endif
first_pass_motion_search(cpi, x, &kZeroMv, &tmp_mv,
&alt_motion_error);
if (alt_motion_error < motion_error &&
alt_motion_error < gf_motion_error &&
alt_motion_error < this_intra_error)
++stats.third_ref_count;
// Reset to last frame as reference buffer.
xd->plane[0].pre[0].buf = last_frame->y_buffer + recon_yoffset;
xd->plane[0].pre[0].stride = last_frame->y_stride;
// In accumulating a score for the 3rd reference frame take the
// best of the motion predicted score and the intra coded error
// (just as will be done for) accumulation of "coded_error" for
// the last frame.
stats.tr_coded_error += AOMMIN(alt_motion_error, this_intra_error);
} else {
stats.tr_coded_error += motion_error;
}
} else {
stats.sr_coded_error += motion_error;
stats.tr_coded_error += motion_error;
}
// Start by assuming that intra mode is best.
best_ref_mv.row = 0;
best_ref_mv.col = 0;
if (motion_error <= this_intra_error) {
aom_clear_system_state();
// Keep a count of cases where the inter and intra were very close
// and very low. This helps with scene cut detection for example in
// cropped clips with black bars at the sides or top and bottom.
if (((this_intra_error - INTRA_MODE_PENALTY) * 9 <=
motion_error * 10) &&
(this_intra_error < (2 * INTRA_MODE_PENALTY))) {
stats.neutral_count += 1.0;
// Also track cases where the intra is not much worse than the inter
// and use this in limiting the GF/arf group length.
} else if ((this_intra_error > NCOUNT_INTRA_THRESH) &&
(this_intra_error <
(NCOUNT_INTRA_FACTOR * motion_error))) {
stats.neutral_count +=
(double)motion_error /
DOUBLE_DIVIDE_CHECK((double)this_intra_error);
}
MV best_mv = get_mv_from_fullmv(&mv);
this_intra_error = motion_error;
xd->mi[0]->mode = NEWMV;
xd->mi[0]->mv[0].as_mv = best_mv;
xd->mi[0]->tx_size = TX_4X4;
xd->mi[0]->ref_frame[0] = LAST_FRAME;
xd->mi[0]->ref_frame[1] = NONE_FRAME;
av1_enc_build_inter_predictor(cm, xd, mb_row * mb_scale,
mb_col * mb_scale, NULL, bsize,
AOM_PLANE_Y, AOM_PLANE_Y);
av1_encode_sby_pass1(cpi, x, bsize);
stats.sum_mvr += best_mv.row;
stats.sum_mvr_abs += abs(best_mv.row);
stats.sum_mvc += best_mv.col;
stats.sum_mvc_abs += abs(best_mv.col);
stats.sum_mvrs += best_mv.row * best_mv.row;
stats.sum_mvcs += best_mv.col * best_mv.col;
++stats.inter_count;
best_ref_mv = best_mv;
if (!is_zero_mv(&best_mv)) {
++stats.mv_count;
// Non-zero vector, was it different from the last non zero vector?
if (!is_equal_mv(&best_mv, &lastmv)) ++stats.new_mv_count;
lastmv = best_mv;
// Does the row vector point inwards or outwards?
if (mb_row < mi_params->mb_rows / 2) {
if (mv.row > 0)
--stats.sum_in_vectors;
else if (mv.row < 0)
++stats.sum_in_vectors;
} else if (mb_row > mi_params->mb_rows / 2) {
if (mv.row > 0)
++stats.sum_in_vectors;
else if (mv.row < 0)
--stats.sum_in_vectors;
}
// Does the col vector point inwards or outwards?
if (mb_col < mi_params->mb_cols / 2) {
if (mv.col > 0)
--stats.sum_in_vectors;
else if (mv.col < 0)
++stats.sum_in_vectors;
} else if (mb_col > mi_params->mb_cols / 2) {
if (mv.col > 0)
++stats.sum_in_vectors;
else if (mv.col < 0)
--stats.sum_in_vectors;
}
}
}
raw_motion_err_list[raw_motion_err_counts++] = raw_motion_error;
} else {
stats.sr_coded_error += (int64_t)this_intra_error;
stats.tr_coded_error += (int64_t)this_intra_error;
}
stats.coded_error += (int64_t)this_intra_error;
// Adjust to the next column of MBs.
x->plane[0].src.buf += fp_block_size_width;
x->plane[1].src.buf += uv_mb_height;
x->plane[2].src.buf += uv_mb_height;
recon_yoffset += fp_block_size_width;
src_yoffset += fp_block_size_width;
recon_uvoffset += uv_mb_height;
alt_ref_frame_yoffset += fp_block_size_width;
}
// Adjust to the next row of MBs.
x->plane[0].src.buf += fp_block_size_height * x->plane[0].src.stride -
fp_block_size_width * mi_params->mb_cols;
x->plane[1].src.buf += uv_mb_height * x->plane[1].src.stride -
uv_mb_height * mi_params->mb_cols;
x->plane[2].src.buf += uv_mb_height * x->plane[1].src.stride -
uv_mb_height * mi_params->mb_cols;
aom_clear_system_state();
}
const double raw_err_stdev =
raw_motion_error_stdev(raw_motion_err_list, raw_motion_err_counts);
aom_free(raw_motion_err_list);
// Clamp the image start to rows/2. This number of rows is discarded top
// and bottom as dead data so rows / 2 means the frame is blank.
if ((stats.image_data_start_row > mi_params->mb_rows / 2) ||
(stats.image_data_start_row == INVALID_ROW)) {
stats.image_data_start_row = mi_params->mb_rows / 2;
}
// Exclude any image dead zone
if (stats.image_data_start_row > 0) {
stats.intra_skip_count =
AOMMAX(0, stats.intra_skip_count -
(stats.image_data_start_row * mi_params->mb_cols * 2));
}
TWO_PASS *twopass = &cpi->twopass;
const int num_mbs = (cpi->oxcf.resize_mode != RESIZE_NONE) ? cpi->initial_mbs
: mi_params->MBs;
stats.intra_factor = stats.intra_factor / (double)num_mbs;
stats.brightness_factor = stats.brightness_factor / (double)num_mbs;
FIRSTPASS_STATS *this_frame_stats = twopass->stats_buf_ctx->stats_in_end;
update_firstpass_stats(cpi, &stats, raw_err_stdev,
current_frame->frame_number, ts_duration);
// Copy the previous Last Frame back into gf buffer if the prediction is good
// enough... but also don't allow it to lag too far.
if ((twopass->sr_update_lag > 3) ||
((current_frame->frame_number > 0) &&
(this_frame_stats->pcnt_inter > 0.20) &&
((this_frame_stats->intra_error /
DOUBLE_DIVIDE_CHECK(this_frame_stats->coded_error)) > 2.0))) {
if (golden_frame != NULL) {
assign_frame_buffer_p(
&cm->ref_frame_map[get_ref_frame_map_idx(cm, GOLDEN_FRAME)],
cm->ref_frame_map[get_ref_frame_map_idx(cm, LAST_FRAME)]);
}
twopass->sr_update_lag = 1;
} else {
++twopass->sr_update_lag;
}
aom_extend_frame_borders(this_frame, num_planes);
// The frame we just compressed now becomes the last frame.
assign_frame_buffer_p(
&cm->ref_frame_map[get_ref_frame_map_idx(cm, LAST_FRAME)], cm->cur_frame);
// Special case for the first frame. Copy into the GF buffer as a second
// reference.
if (current_frame->frame_number == 0 &&
get_ref_frame_map_idx(cm, GOLDEN_FRAME) != INVALID_IDX) {
assign_frame_buffer_p(
&cm->ref_frame_map[get_ref_frame_map_idx(cm, GOLDEN_FRAME)],
cm->ref_frame_map[get_ref_frame_map_idx(cm, LAST_FRAME)]);
}
print_reconstruction_frame(last_frame, current_frame->frame_number,
/*do_print=*/0);
++current_frame->frame_number;
}