OpenShot Library | libopenshot
0.2.2
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28 #include "../include/ImageReader.h"
58 image = std::shared_ptr<Magick::Image>(
new Magick::Image(path));
61 image->backgroundColor(Magick::Color(
"none"));
64 catch (Magick::Exception
e) {
66 throw InvalidFile(
"File could not be opened.", path);
120 throw ReaderClosed(
"The FFmpegReader is closed. Call Open() before calling this method.", path);
123 std::shared_ptr<Frame> image_frame(
new Frame(requested_frame, image->size().width(), image->size().height(),
"#000000", 0, 2));
126 image_frame->AddMagickImage(image);
144 root[
"type"] =
"ImageReader";
157 bool success = reader.parse( value, root );
160 throw InvalidJSON(
"JSON could not be parsed (or is invalid)",
"");
170 throw InvalidJSON(
"JSON is invalid (missing keys or invalid data types)",
"");
181 if (!root[
"path"].isNull())
182 path = root[
"path"].asString();
virtual void SetJsonValue(Json::Value root)=0
Load Json::JsonValue into this object.
This namespace is the default namespace for all code in the openshot library.
This class represents a fraction.
string Json()
Get and Set JSON methods.
Json::Value JsonValue()
Generate Json::JsonValue for this object.
float duration
Length of time (in seconds)
This class represents a single frame of video (i.e. image & audio data)
bool has_video
Determines if this file has a video stream.
Fraction display_ratio
The ratio of width to height of the video stream (i.e. 640x480 has a ratio of 4/3)
virtual Json::Value JsonValue()=0
Generate Json::JsonValue for this object.
int width
The width of the video (in pixesl)
ReaderInfo info
Information about the current media file.
int64_t video_length
The number of frames in the video stream.
int height
The height of the video (in pixels)
int num
Numerator for the fraction.
int den
Denominator for the fraction.
bool has_audio
Determines if this file has an audio stream.
Exception for invalid JSON.
int64_t file_size
Size of file (in bytes)
void Open()
Open File - which is called by the constructor automatically.
std::shared_ptr< Frame > GetFrame(int64_t requested_frame)
Fraction pixel_ratio
The pixel ratio of the video stream as a fraction (i.e. some pixels are not square)
bool has_single_image
Determines if this file only contains a single image.
void SetJsonValue(Json::Value root)
Load Json::JsonValue into this object.
Exception for files that can not be found or opened.
string vcodec
The name of the video codec used to encode / decode the video stream.
Exception when a reader is closed, and a frame is requested.
Fraction fps
Frames per second, as a fraction (i.e. 24/1 = 24 fps)
Fraction video_timebase
The video timebase determines how long each frame stays on the screen.
double ToDouble()
Return this fraction as a double (i.e. 1/2 = 0.5)
void SetJson(string value)
Load JSON string into this object.