/*
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* Copyright 2020 Rockchip Electronics Co. LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define MODULE_TAG "iep2"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "mpp_common.h"
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#include "iep2_api.h"
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#include "iep2_gmv.h"
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static void iep2_sort(uint32_t bin[], int map[], int size)
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{
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int i, m, n;
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uint32_t *dat = malloc(size * sizeof(uint32_t));
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for (i = 0; i < size; ++i) {
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map[i] = i;
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dat[i] = bin[i];
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}
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for (m = 0; m < size; ++m) {
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int max = m;
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uint32_t temp;
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int p;
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for (n = m + 1; n < size; ++n) if (dat[n] > dat[max]) max = n;
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// Put found minimum element in its place
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temp = dat[m];
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p = map[m];
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map[m] = map[max];
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map[max] = p;
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dat[m] = dat[max];
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dat[max] = temp;
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}
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free(dat);
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}
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static int iep2_is_subt_mv(int mv, struct mv_list *mv_ls)
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{
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int i;
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for (i = 0; i < mv_ls->idx; ++i) {
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if (RKABS(mv_ls->mv[i] - (mv * 4)) < 3)
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return 1;
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}
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return 0;
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}
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void iep2_update_gmv(struct iep2_api_ctx *ctx, struct mv_list *mv_ls)
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{
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int rows = ctx->params.tile_rows;
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int cols = ctx->params.tile_cols;
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uint32_t *bin = ctx->output.mv_hist;
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int lbin = MPP_ARRAY_ELEMS(ctx->output.mv_hist);
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int i;
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int map[MPP_ARRAY_ELEMS(ctx->output.mv_hist)];
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uint32_t r = 6;
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// print mvc histogram of current motion estimation.
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for (i = 0; i < lbin; ++i) {
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if (bin[i] == 0)
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continue;
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iep_dbg_trace("mv(%d) %d\n", i - MVL, bin[i]);
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}
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bin[MVL] = 0; // disable 0 mv
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// update motion vector candidates
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iep2_sort(bin, map, lbin);
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iep_dbg_trace("sort map:\n");
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if (0) {
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for (i = 0; i < lbin; ++i) {
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fprintf(stderr, "%d ", map[i]);
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}
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fprintf(stderr, "\n");
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}
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memset(ctx->params.mv_tru_list, 0, sizeof(ctx->params.mv_tru_list));
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memset(ctx->params.mv_tru_vld, 0, sizeof(ctx->params.mv_tru_vld));
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// Get top 8 candidates of current motion estimation.
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for (i = 0; i < 8; ++i) {
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int8_t x = map[i] - MVL;
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if (bin[map[i]] > r * ((rows * cols) >> 7) ||
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iep2_is_subt_mv(x, mv_ls)) {
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// 1 bit at low endian for mv valid check
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ctx->params.mv_tru_list[i] = x;
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ctx->params.mv_tru_vld[i] = 1;
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} else {
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if (i == 0) {
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ctx->params.mv_tru_list[0] = 0;
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ctx->params.mv_tru_vld[0] = 1;
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}
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break;
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}
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}
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for (i = 0; i < 8; ++i)
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iep_dbg_trace("new mv candidates list[%d] (%d,%d)\n",
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i, ctx->params.mv_tru_list[i], 0);
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}
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