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-rw-r--r--third_party/aom/av1/encoder/picklpf.c263
1 files changed, 0 insertions, 263 deletions
diff --git a/third_party/aom/av1/encoder/picklpf.c b/third_party/aom/av1/encoder/picklpf.c
deleted file mode 100644
index c5508e25c..000000000
--- a/third_party/aom/av1/encoder/picklpf.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * 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 <assert.h>
-#include <limits.h>
-
-#include "config/aom_scale_rtcd.h"
-
-#include "aom_dsp/aom_dsp_common.h"
-#include "aom_dsp/psnr.h"
-#include "aom_mem/aom_mem.h"
-#include "aom_ports/mem.h"
-
-#include "av1/common/av1_loopfilter.h"
-#include "av1/common/onyxc_int.h"
-#include "av1/common/quant_common.h"
-
-#include "av1/encoder/av1_quantize.h"
-#include "av1/encoder/encoder.h"
-#include "av1/encoder/picklpf.h"
-
-static void yv12_copy_plane(const YV12_BUFFER_CONFIG *src_bc,
- YV12_BUFFER_CONFIG *dst_bc, int plane) {
- switch (plane) {
- case 0: aom_yv12_copy_y(src_bc, dst_bc); break;
- case 1: aom_yv12_copy_u(src_bc, dst_bc); break;
- case 2: aom_yv12_copy_v(src_bc, dst_bc); break;
- default: assert(plane >= 0 && plane <= 2); break;
- }
-}
-
-int av1_get_max_filter_level(const AV1_COMP *cpi) {
- if (cpi->oxcf.pass == 2) {
- return cpi->twopass.section_intra_rating > 8 ? MAX_LOOP_FILTER * 3 / 4
- : MAX_LOOP_FILTER;
- } else {
- return MAX_LOOP_FILTER;
- }
-}
-
-static int64_t try_filter_frame(const YV12_BUFFER_CONFIG *sd,
- AV1_COMP *const cpi, int filt_level,
- int partial_frame, int plane, int dir) {
- AV1_COMMON *const cm = &cpi->common;
- int64_t filt_err;
-
- assert(plane >= 0 && plane <= 2);
- int filter_level[2] = { filt_level, filt_level };
- if (plane == 0 && dir == 0) filter_level[1] = cm->lf.filter_level[1];
- if (plane == 0 && dir == 1) filter_level[0] = cm->lf.filter_level[0];
-
- // set base filters for use of get_filter_level when in DELTA_Q_LF mode
- switch (plane) {
- case 0:
- cm->lf.filter_level[0] = filter_level[0];
- cm->lf.filter_level[1] = filter_level[1];
- break;
- case 1: cm->lf.filter_level_u = filter_level[0]; break;
- case 2: cm->lf.filter_level_v = filter_level[0]; break;
- }
-
- // TODO(any): please enable multi-thread and remove the flag when loop
- // filter mask is compatible with multi-thread.
-#if LOOP_FILTER_BITMASK
- av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, 0, plane,
- plane + 1, partial_frame);
-#else
- if (cpi->num_workers > 1)
- av1_loop_filter_frame_mt(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, plane,
- plane + 1, partial_frame, cpi->workers,
- cpi->num_workers, &cpi->lf_row_sync);
- else
- av1_loop_filter_frame(cm->frame_to_show, cm, &cpi->td.mb.e_mbd, plane,
- plane + 1, partial_frame);
-#endif
-
- filt_err = aom_get_sse_plane(sd, cm->frame_to_show, plane,
- cm->seq_params.use_highbitdepth);
-
- // Re-instate the unfiltered frame
- yv12_copy_plane(&cpi->last_frame_uf, cm->frame_to_show, plane);
-
- return filt_err;
-}
-
-static int search_filter_level(const YV12_BUFFER_CONFIG *sd, AV1_COMP *cpi,
- int partial_frame,
- const int *last_frame_filter_level,
- double *best_cost_ret, int plane, int dir) {
- const AV1_COMMON *const cm = &cpi->common;
- const int min_filter_level = 0;
- const int max_filter_level = av1_get_max_filter_level(cpi);
- int filt_direction = 0;
- int64_t best_err;
- int filt_best;
- MACROBLOCK *x = &cpi->td.mb;
-
- // Start the search at the previous frame filter level unless it is now out of
- // range.
- int lvl;
- switch (plane) {
- case 0: lvl = last_frame_filter_level[dir]; break;
- case 1: lvl = last_frame_filter_level[2]; break;
- case 2: lvl = last_frame_filter_level[3]; break;
- default: assert(plane >= 0 && plane <= 2); return 0;
- }
- int filt_mid = clamp(lvl, min_filter_level, max_filter_level);
- int filter_step = filt_mid < 16 ? 4 : filt_mid / 4;
- // Sum squared error at each filter level
- int64_t ss_err[MAX_LOOP_FILTER + 1];
-
- // Set each entry to -1
- memset(ss_err, 0xFF, sizeof(ss_err));
- yv12_copy_plane(cm->frame_to_show, &cpi->last_frame_uf, plane);
- best_err = try_filter_frame(sd, cpi, filt_mid, partial_frame, plane, dir);
- filt_best = filt_mid;
- ss_err[filt_mid] = best_err;
-
- while (filter_step > 0) {
- const int filt_high = AOMMIN(filt_mid + filter_step, max_filter_level);
- const int filt_low = AOMMAX(filt_mid - filter_step, min_filter_level);
-
- // Bias against raising loop filter in favor of lowering it.
- int64_t bias = (best_err >> (15 - (filt_mid / 8))) * filter_step;
-
- if ((cpi->oxcf.pass == 2) && (cpi->twopass.section_intra_rating < 20))
- bias = (bias * cpi->twopass.section_intra_rating) / 20;
-
- // yx, bias less for large block size
- if (cm->tx_mode != ONLY_4X4) bias >>= 1;
-
- if (filt_direction <= 0 && filt_low != filt_mid) {
- // Get Low filter error score
- if (ss_err[filt_low] < 0) {
- ss_err[filt_low] =
- try_filter_frame(sd, cpi, filt_low, partial_frame, plane, dir);
- }
- // If value is close to the best so far then bias towards a lower loop
- // filter value.
- if (ss_err[filt_low] < (best_err + bias)) {
- // Was it actually better than the previous best?
- if (ss_err[filt_low] < best_err) {
- best_err = ss_err[filt_low];
- }
- filt_best = filt_low;
- }
- }
-
- // Now look at filt_high
- if (filt_direction >= 0 && filt_high != filt_mid) {
- if (ss_err[filt_high] < 0) {
- ss_err[filt_high] =
- try_filter_frame(sd, cpi, filt_high, partial_frame, plane, dir);
- }
- // If value is significantly better than previous best, bias added against
- // raising filter value
- if (ss_err[filt_high] < (best_err - bias)) {
- best_err = ss_err[filt_high];
- filt_best = filt_high;
- }
- }
-
- // Half the step distance if the best filter value was the same as last time
- if (filt_best == filt_mid) {
- filter_step /= 2;
- filt_direction = 0;
- } else {
- filt_direction = (filt_best < filt_mid) ? -1 : 1;
- filt_mid = filt_best;
- }
- }
-
- // Update best error
- best_err = ss_err[filt_best];
-
- if (best_cost_ret) *best_cost_ret = RDCOST_DBL(x->rdmult, 0, best_err);
- return filt_best;
-}
-
-void av1_pick_filter_level(const YV12_BUFFER_CONFIG *sd, AV1_COMP *cpi,
- LPF_PICK_METHOD method) {
- AV1_COMMON *const cm = &cpi->common;
- const int num_planes = av1_num_planes(cm);
- struct loopfilter *const lf = &cm->lf;
- (void)sd;
-
- lf->sharpness_level = 0;
- cpi->td.mb.rdmult = cpi->rd.RDMULT;
-
- if (method == LPF_PICK_MINIMAL_LPF) {
- lf->filter_level[0] = 0;
- lf->filter_level[1] = 0;
- } else if (method >= LPF_PICK_FROM_Q) {
- const int min_filter_level = 0;
- const int max_filter_level = av1_get_max_filter_level(cpi);
- const int q = av1_ac_quant_Q3(cm->base_qindex, 0, cm->seq_params.bit_depth);
- // These values were determined by linear fitting the result of the
- // searched level for 8 bit depth:
- // Keyframes: filt_guess = q * 0.06699 - 1.60817
- // Other frames: filt_guess = q * 0.02295 + 2.48225
- //
- // And high bit depth separately:
- // filt_guess = q * 0.316206 + 3.87252
- int filt_guess;
- switch (cm->seq_params.bit_depth) {
- case AOM_BITS_8:
- filt_guess = (cm->frame_type == KEY_FRAME)
- ? ROUND_POWER_OF_TWO(q * 17563 - 421574, 18)
- : ROUND_POWER_OF_TWO(q * 6017 + 650707, 18);
- break;
- case AOM_BITS_10:
- filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 4060632, 20);
- break;
- case AOM_BITS_12:
- filt_guess = ROUND_POWER_OF_TWO(q * 20723 + 16242526, 22);
- break;
- default:
- assert(0 &&
- "bit_depth should be AOM_BITS_8, AOM_BITS_10 "
- "or AOM_BITS_12");
- return;
- }
- if (cm->seq_params.bit_depth != AOM_BITS_8 && cm->frame_type == KEY_FRAME)
- filt_guess -= 4;
- // TODO(chengchen): retrain the model for Y, U, V filter levels
- lf->filter_level[0] = clamp(filt_guess, min_filter_level, max_filter_level);
- lf->filter_level[1] = clamp(filt_guess, min_filter_level, max_filter_level);
- lf->filter_level_u = clamp(filt_guess, min_filter_level, max_filter_level);
- lf->filter_level_v = clamp(filt_guess, min_filter_level, max_filter_level);
- } else {
- const int last_frame_filter_level[4] = { lf->filter_level[0],
- lf->filter_level[1],
- lf->filter_level_u,
- lf->filter_level_v };
-
- lf->filter_level[0] = lf->filter_level[1] =
- search_filter_level(sd, cpi, method == LPF_PICK_FROM_SUBIMAGE,
- last_frame_filter_level, NULL, 0, 2);
- lf->filter_level[0] =
- search_filter_level(sd, cpi, method == LPF_PICK_FROM_SUBIMAGE,
- last_frame_filter_level, NULL, 0, 0);
- lf->filter_level[1] =
- search_filter_level(sd, cpi, method == LPF_PICK_FROM_SUBIMAGE,
- last_frame_filter_level, NULL, 0, 1);
-
- if (num_planes > 1) {
- lf->filter_level_u =
- search_filter_level(sd, cpi, method == LPF_PICK_FROM_SUBIMAGE,
- last_frame_filter_level, NULL, 1, 0);
- lf->filter_level_v =
- search_filter_level(sd, cpi, method == LPF_PICK_FROM_SUBIMAGE,
- last_frame_filter_level, NULL, 2, 0);
- }
- }
-}
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