35 #ifdef USE_IMAGEMAGICK 37 #include "../include/ImageWriter.h" 42 path(path), cache_size(8), is_writing(false), write_video_count(0), image_quality(75), number_of_loops(1),
43 combine_frames(true), is_open(false)
52 int quality,
int loops,
bool combine)
59 image_quality = quality;
60 number_of_loops = loops;
61 combine_frames = combine;
85 ZmqLogger::Instance()->
AppendDebugMethod(
"ImageWriter::SetVideoOptions (" + format +
")",
"width", width,
"height", height,
"size.num", size.
num,
"size.den", size.
den,
"fps.num", fps.
num,
"fps.den", fps.
den);
99 throw WriterClosed(
"The ImageWriter is closed. Call Open() before calling this method.", path);
103 std::shared_ptr<Magick::Image> frame_image = frame->GetMagickImage();
105 frame_image->backgroundColor(Magick::Color(
"none"));
107 frame_image->quality(image_quality);
109 frame_image->animationIterations(number_of_loops);
113 int new_height =
info.
height * frame->GetPixelRatio().Reciprocal().ToDouble();
116 Magick::Geometry new_size(new_width, new_height);
117 new_size.aspect(
true);
118 frame_image->resize(new_size);
122 frames.push_back(*frame_image.get());
134 for (int64_t number = start; number <= length; number++)
137 std::shared_ptr<Frame> f = reader->
GetFrame(number);
148 Magick::writeImages(frames.begin(), frames.end(), path, combine_frames);
154 write_video_count = 0;
162 #endif //USE_IMAGEMAGICK int num
Numerator for the fraction.
WriterInfo info
Information about the current media file.
int video_bit_rate
The bit rate of the video stream (in bytes)
#define MAGICK_IMAGE_ALPHA(im, a)
float ToFloat()
Return this fraction as a float (i.e. 1/2 = 0.5)
void WriteFrame(std::shared_ptr< Frame > frame)
Add a frame to the stack waiting to be encoded.
openshot::Fraction display_ratio
The ratio of width to height of the video stream (i.e. 640x480 has a ratio of 4/3) ...
void Reduce()
Reduce this fraction (i.e. 640/480 = 4/3)
This abstract class is the base class, used by all readers in libopenshot.
int width
The width of the video (in pixels)
openshot::Fraction video_timebase
The video timebase determines how long each frame stays on the screen.
openshot::Fraction pixel_ratio
The pixel ratio of the video stream as a fraction (i.e. some pixels are not square) ...
void AppendDebugMethod(std::string method_name, std::string arg1_name="", float arg1_value=-1.0, std::string arg2_name="", float arg2_value=-1.0, std::string arg3_name="", float arg3_value=-1.0, std::string arg4_name="", float arg4_value=-1.0, std::string arg5_name="", float arg5_value=-1.0, std::string arg6_name="", float arg6_value=-1.0)
Append debug information.
void Close()
Close the writer and encode/output final image to the disk. This is a requirement of ImageMagick...
virtual std::shared_ptr< openshot::Frame > GetFrame(int64_t number)=0
This class represents a fraction.
ImageWriter(std::string path)
Constructor for ImageWriter. Throws one of the following exceptions.
bool has_video
Determines if this file has a video stream.
void SetVideoOptions(std::string format, Fraction fps, int width, int height, int quality, int loops, bool combine)
Set the video export options.
static ZmqLogger * Instance()
Create or get an instance of this logger singleton (invoke the class with this method) ...
This namespace is the default namespace for all code in the openshot library.
bool has_audio
Determines if this file has an audio stream.
std::string vcodec
The name of the video codec used to encode / decode the video stream.
Exception when a writer is closed, and a frame is requested.
int height
The height of the video (in pixels)
int den
Denominator for the fraction.
openshot::Fraction fps
Frames per second, as a fraction (i.e. 24/1 = 24 fps)