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[ibc] Add a hashmap implementation for IBC hash search

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This commit is contained in:
Marko Viitanen 2023-06-21 22:08:41 +03:00
parent 68382f9e25
commit 7252befc17
3 changed files with 206 additions and 1 deletions
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2
CMakeLists.txt
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@ -200,7 +200,7 @@ file(GLOB SOURCE_GROUP_CABAC RELATIVE ${PROJECT_SOURCE_DIR} "src/bitstream.*" "s
file(GLOB SOURCE_GROUP_COMPRESSION RELATIVE ${PROJECT_SOURCE_DIR} "src/search*" "src/rdo.*" "src/fast_coeff*")
file(GLOB SOURCE_GROUP_CONSTRAINT RELATIVE ${PROJECT_SOURCE_DIR} "src/constraint.*" "src/ml_*")
file(GLOB SOURCE_GROUP_CONTROL RELATIVE ${PROJECT_SOURCE_DIR} "src/cfg.*" "src/encoder.*" "src/encoder_state-c*" "src/encoder_state-g*" "src/encoderstate*" "src/gop.*" "src/input_frame_buffer.*" "src/uvg266*" "src/rate_control.*" "src/mip_data.h")
file(GLOB SOURCE_GROUP_DATA_STRUCTURES RELATIVE ${PROJECT_SOURCE_DIR} "src/cu.*" "src/image.*" "src/imagelist.*" "src/videoframe.*")
file(GLOB SOURCE_GROUP_DATA_STRUCTURES RELATIVE ${PROJECT_SOURCE_DIR} "src/cu.*" "src/image.*" "src/imagelist.*" "src/videoframe.*" "src/hashmap.*")
file(GLOB SOURCE_GROUP_EXTRAS RELATIVE ${PROJECT_SOURCE_DIR} "src/extras/*.h" "src/extras/*.c")
file(GLOB_RECURSE SOURCE_GROUP_STRATEGIES RELATIVE ${PROJECT_SOURCE_DIR} "src/strategies/*.h" "src/strategies/*.c")
file(GLOB SOURCE_GROUP_RECON RELATIVE ${PROJECT_SOURCE_DIR} "src/alf.*" "src/filter.*" "src/inter.*" "src/intra.*" "src/reshape.*" "src/sao.*" "src/scalinglist.*" "src/tables.*" "src/transform.*")

145
src/hashmap.c Normal file
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@ -0,0 +1,145 @@
/*****************************************************************************
* This file is part of uvg266 VVC encoder.
*
* Copyright (c) 2023, Tampere University, ITU/ISO/IEC, project contributors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* * Neither the name of the Tampere University or ITU/ISO/IEC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
****************************************************************************/
#include "hashmap.h"
/**
* \brief This function creates a node for the uvg_hashmap.
*
* \param key the key of the node to be created
* \param value the value of the node to be created
* \return uvg_hashmap_node a node with the given key and value
*/
uvg_hashmap_node* uvg_hashmap_create_node(uint32_t key, uint32_t value) {
uvg_hashmap_node* new_node = (uvg_hashmap_node*)malloc(sizeof(uvg_hashmap_node));
new_node->key = key;
new_node->value = value;
new_node->next = NULL;
return new_node;
}
/**
* \brief This function creates a new uvg_hashmap with a given bucket size.
*
* \param bucket_size the size of the hashmap bucket
* \return uvg_hashmap a new uvg_hashmap with the given bucket size
*/
uvg_hashmap* uvg_hashmap_create(uint32_t bucket_size)
{
uvg_hashmap* new_hashmap = (uvg_hashmap*)malloc(sizeof(uvg_hashmap));
new_hashmap->bucket_size = bucket_size;
new_hashmap->table = (uvg_hashmap_node**)malloc(sizeof(uvg_hashmap_node*) * bucket_size);
for (int i = 0; i < bucket_size; i++) {
new_hashmap->table[i] = NULL;
}
return new_hashmap;
}
/**
* \brief This function calculates the hash index for a given
* key and bucket size using the Jenkins hash function.
*
* \param key the key to be hashed
* \param bucket_size the size of the hashmap bucket
* \return the hashed index for the given key and bucket size.
*/
uint32_t uvg_hashmap_hash(uint32_t key, uint32_t bucket_size) {
key ^= (key >> 20) ^ (key >> 12);
return (key ^ (key >> 7) ^ (key >> 4) ^ 2654435769U) % bucket_size;
}
/**
* \brief This function inserts a new node into the hashmap.
*
* \param map the hashmap to insert the new node into
* \param key the key of the new node
* \param value the value of the new node
*/
void uvg_hashmap_insert(uvg_hashmap* map, uint32_t key, uint32_t value) {
uint32_t hash_index = uvg_hashmap_hash(key, map->bucket_size);
uvg_hashmap_node* new_node = uvg_hashmap_create_node(key, value);
new_node->next = map->table[hash_index];
map->table[hash_index] = new_node;
}
/**
* \brief This function searches the hashmap for the given key.
*
* \param map the hashmap to search in
* \param key the key to search for
* \return uvg_hashmap_node the node with the given key, NULL if not found.
*/
uvg_hashmap_node* uvg_hashmap_search(uvg_hashmap* map, uint32_t key) {
uint32_t hashIndex = uvg_hashmap_hash(key, map->bucket_size);
uvg_hashmap_node* temp = map->table[hashIndex];
uvg_hashmap_node* return_node = NULL;
// Search key in chain and return all of them
while (temp) {
if (temp->key == key) {
uvg_hashmap_node* new_node = uvg_hashmap_create_node(key, temp->value);
if (return_node != NULL) {
new_node->next = return_node;
}
return_node = new_node;
}
temp = temp->next;
}
return return_node;
}
/**
* \brief This function frees the memory of a given hashmap node.
*
* \param node the node to free the memory of.
*/
void uvg_hashmap_node_free(uvg_hashmap_node* node)
{
while (node) {
uvg_hashmap_node* to_delete = node;
node = node->next;
free(to_delete);
}
}
/**
* \brief This function frees the memory of a given hashmap.
*
* \param map the hashmap to free the memory of.
*/
void uvg_hashmap_free(uvg_hashmap* map) {
for (int i = 0; i < map->bucket_size; i++) {
uvg_hashmap_node* temp = map->table[i];
uvg_hashmap_node_free(temp);
}
free(map->table);
free(map);
}

60
src/hashmap.h Normal file
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@ -0,0 +1,60 @@
/*****************************************************************************
* This file is part of uvg266 VVC encoder.
*
* Copyright (c) 2023, Tampere University, ITU/ISO/IEC, project contributors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* * Neither the name of the Tampere University or ITU/ISO/IEC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
typedef struct uvg_hashmap_node {
uint32_t key;
uint32_t value;
struct uvg_hashmap_node* next;
} uvg_hashmap_node;
typedef struct uvg_hashmap {
uint32_t bucket_size;
uvg_hashmap_node** table;
} uvg_hashmap;
uvg_hashmap_node* uvg_hashmap_create_node(uint32_t key, uint32_t value);
uvg_hashmap* uvg_hashmap_create(uint32_t bucket_size);
uint32_t uvg_hashmap_hash(uint32_t key);
void uvg_hashmap_insert(uvg_hashmap* map, uint32_t key, uint32_t value);
uvg_hashmap_node* uvg_hashmap_search(uvg_hashmap* map, uint32_t key);
void uvg_hashmap_node_free(uvg_hashmap_node* node);
void uvg_hashmap_free(uvg_hashmap* map);