39 init_effect_details();
46 init_effect_details();
50 void Noise::init_effect_details()
58 info.
description =
"Random signal having equal intensity at different frequencies.";
65 std::shared_ptr<openshot::Frame>
Noise::GetFrame(std::shared_ptr<openshot::Frame> frame, int64_t frame_number)
71 for (
int channel = 0; channel < frame->audio->getNumChannels(); channel++)
73 auto *buffer = frame->audio->getWritePointer(channel);
75 for (
auto sample = 0; sample < frame->audio->getNumSamples(); ++sample)
77 buffer[sample] = buffer[sample]*(1 - (1+(float)noise)/100) + buffer[sample]*0.0001*(rand()%100+1)*noise;
115 catch (
const std::exception& e)
118 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)");
129 if (!root[
"level"].isNull())
138 root[
"id"] =
add_property_json(
"ID", 0.0,
"string",
Id(), NULL, -1, -1,
true, requested_frame);
140 root[
"start"] =
add_property_json(
"Start",
Start(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
141 root[
"end"] =
add_property_json(
"End",
End(),
"float",
"", NULL, 0, 1000 * 60 * 30,
false, requested_frame);
142 root[
"duration"] =
add_property_json(
"Duration",
Duration(),
"float",
"", NULL, 0, 1000 * 60 * 30,
true, requested_frame);
148 return root.toStyledString();
std::shared_ptr< openshot::Frame > GetFrame(int64_t frame_number) override
This method is required for all derived classes of ClipBase, and returns a new openshot::Frame object...
void SetJsonValue(const Json::Value root) override
Load Json::Value into this object.
Json::Value JsonValue() const override
Generate Json::Value for this object.
Keyframe level
Noise level keyframe. The amount of noise inserted on the audio.
std::string Id() const
Get the Id of this clip object.
float Start() const
Get start position (in seconds) of clip (trim start of video)
virtual void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
const Json::Value stringToJson(const std::string value)
virtual Json::Value JsonValue() const
Generate Json::Value for this object.
bool has_audio
Determines if this effect manipulates the audio of a frame.
Noise()
Blank constructor, useful when using Json to load the effect properties.
Header file for all Exception classes.
std::string PropertiesJSON(int64_t requested_frame) const override
std::string class_name
The class name of the effect.
std::string name
The name of the effect.
Header file for Noise audio effect class.
float Duration() const
Get the length of this clip (in seconds)
void SetJsonValue(const Json::Value root)
Load Json::Value into this object.
This namespace is the default namespace for all code in the openshot library.
Json::Value JsonValue() const
Generate Json::Value for this object.
std::string description
The description of this effect and what it does.
bool has_video
Determines if this effect manipulates the image of a frame.
Exception for invalid JSON.
void SetJson(const std::string value) override
Load JSON string into this object.
double GetValue(int64_t index) const
Get the value at a specific index.
std::string Json() const override
Generate JSON string of this object.
float End() const
Get end position (in seconds) of clip (trim end of video)
A Keyframe is a collection of Point instances, which is used to vary a number or property over time...
Json::Value add_property_json(std::string name, float value, std::string type, std::string memo, const Keyframe *keyframe, float min_value, float max_value, bool readonly, int64_t requested_frame) const
Generate JSON for a property.
int Layer() const
Get layer of clip on timeline (lower number is covered by higher numbers)
EffectInfoStruct info
Information about the current effect.