OpenShot Library | libopenshot 0.2.7
CacheBase.cpp
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1/**
2 * @file
3 * @brief Source file for CacheBase class
4 * @author Jonathan Thomas <jonathan@openshot.org>
5 *
6 * @ref License
7 */
8
9/* LICENSE
10 *
11 * Copyright (c) 2008-2019 OpenShot Studios, LLC
12 * <http://www.openshotstudios.com/>. This file is part of
13 * OpenShot Library (libopenshot), an open-source project dedicated to
14 * delivering high quality video editing and animation solutions to the
15 * world. For more information visit <http://www.openshot.org/>.
16 *
17 * OpenShot Library (libopenshot) is free software: you can redistribute it
18 * and/or modify it under the terms of the GNU Lesser General Public License
19 * as published by the Free Software Foundation, either version 3 of the
20 * License, or (at your option) any later version.
21 *
22 * OpenShot Library (libopenshot) is distributed in the hope that it will be
23 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU Lesser General Public License for more details.
26 *
27 * You should have received a copy of the GNU Lesser General Public License
28 * along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
29 */
30
31#include "CacheBase.h"
32
33using namespace std;
34using namespace openshot;
35
36// Default constructor, no max frames
37CacheBase::CacheBase() : max_bytes(0) {
38 // Init the critical section
39 cacheCriticalSection = new CriticalSection();
40}
41
42// Constructor that sets the max frames to cache
43CacheBase::CacheBase(int64_t max_bytes) : max_bytes(max_bytes) {
44 // Init the critical section
45 cacheCriticalSection = new CriticalSection();
46}
47
48// Set maximum bytes to a different amount based on a ReaderInfo struct
49void CacheBase::SetMaxBytesFromInfo(int64_t number_of_frames, int width, int height, int sample_rate, int channels)
50{
51 // n frames X height X width X 4 colors of chars X audio channels X 4 byte floats
52 int64_t bytes = number_of_frames * (height * width * 4 + (sample_rate * channels * 4));
53 SetMaxBytes(bytes);
54}
55
56// Generate Json::Value for this object
57Json::Value CacheBase::JsonValue() {
58
59 // Create root json object
60 Json::Value root;
61 std::stringstream max_bytes_stream;
62 max_bytes_stream << max_bytes;
63 root["max_bytes"] = max_bytes_stream.str();
64
65 // return JsonValue
66 return root;
67}
68
69// Load Json::Value into this object
70void CacheBase::SetJsonValue(const Json::Value root) {
71
72 // Set data from Json (if key is found)
73 if (!root["max_bytes"].isNull())
74 max_bytes = std::stoll(root["max_bytes"].asString());
75}
Header file for CacheBase class.
CacheBase()
Default constructor, no max bytes.
Definition: CacheBase.cpp:37
virtual Json::Value JsonValue()=0
Generate Json::Value for this object.
Definition: CacheBase.cpp:57
virtual void SetJsonValue(const Json::Value root)=0
Load Json::Value into this object.
Definition: CacheBase.cpp:70
juce::CriticalSection * cacheCriticalSection
Section lock for multiple threads.
Definition: CacheBase.h:55
int64_t max_bytes
This is the max number of bytes to cache (0 = no limit)
Definition: CacheBase.h:52
void SetMaxBytesFromInfo(int64_t number_of_frames, int width, int height, int sample_rate, int channels)
Set maximum bytes to a different amount based on a ReaderInfo struct.
Definition: CacheBase.cpp:49
void SetMaxBytes(int64_t number_of_bytes)
Set maximum bytes to a different amount.
Definition: CacheBase.h:100
This namespace is the default namespace for all code in the openshot library.
Definition: Compressor.h:47