mirror of
https://github.com/ruby-opencv/ruby-opencv
synced 2023-03-27 23:22:12 -04:00
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
/************************************************************
|
|
|
|
cvvideowriter.cpp -
|
|
|
|
$Author: lsxi $
|
|
|
|
Copyright (C) 2005-2006 Masakazu Yonekura
|
|
|
|
************************************************************/
|
|
#include "cvvideowriter.h"
|
|
/*
|
|
* Document-class: OpenCV::CvVideoWriter
|
|
*
|
|
* Create video stream from images.
|
|
*
|
|
* C structure is "black box".
|
|
*/
|
|
__NAMESPACE_BEGIN_OPENCV
|
|
__NAMESPACE_BEGIN_CVVIDEOWRITER
|
|
|
|
VALUE rb_klass;
|
|
|
|
VALUE
|
|
rb_class()
|
|
{
|
|
return rb_klass;
|
|
}
|
|
|
|
void
|
|
define_ruby_class()
|
|
{
|
|
if(rb_klass)
|
|
return;
|
|
/*
|
|
* opencv = rb_define_module("OpenCV");
|
|
*
|
|
* note: this comment is used by rdoc.
|
|
*/
|
|
VALUE opencv = rb_module_opencv();
|
|
rb_klass = rb_define_class_under(opencv, "CvVideoWriter", rb_cObject);
|
|
rb_define_private_method(rb_klass, "initialize", RUBY_METHOD_FUNC(rb_initialize), -1);
|
|
rb_define_method(rb_klass, "write", RUBY_METHOD_FUNC(rb_write), 1);
|
|
rb_define_method(rb_klass, "close", RUBY_METHOD_FUNC(rb_close), 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* CvVideoWriter.new(<i>filanem, fourcc, fps, size</i>) -> cvvideowriter
|
|
* CvVideoWriter.new(<i>filanem, fourcc, fps, size</i>){|vw| ... } -> nil
|
|
*
|
|
* Open new video writer. If block given, writer is closed automatically when end of block.
|
|
*
|
|
* note: if <i>fourcc</i> is nil, popup codec select dialog (Windows only).
|
|
*/
|
|
VALUE
|
|
rb_initialize(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE filename, fourcc, fps, size;
|
|
rb_scan_args(argc, argv, "40", &filename, &fourcc, &fps, &size);
|
|
char codec[4] = {' ', ' ', ' ', ' '};
|
|
int codec_number;
|
|
Check_Type(filename, T_STRING);
|
|
if (RSTRING_LEN(filename) == 0)
|
|
rb_raise(rb_eArgError, "argument 1 (file name) dose not given");
|
|
if (NIL_P(fourcc))
|
|
codec_number = -1;
|
|
else {
|
|
Check_Type(fourcc, T_STRING);
|
|
if (RSTRING_LEN(fourcc) > 4)
|
|
rb_raise(rb_eStandardError, "argument 2 (fourcc) should be specific 4-character. (i.e \"PIM1\",\"MJPG\")");
|
|
else {
|
|
for (int i = 0; i < RSTRING_LEN(fourcc); i++)
|
|
codec[i] = RSTRING_PTR(fourcc)[i];
|
|
codec_number = CV_FOURCC(codec[0], codec[1], codec[2], codec[3]);
|
|
}
|
|
}
|
|
DATA_PTR(self) = cvCreateVideoWriter(StringValueCStr(filename), codec_number, FIX2INT(fps), VALUE_TO_CVSIZE(size));
|
|
if (rb_block_given_p()) {
|
|
rb_yield(self);
|
|
rb_close(self);
|
|
return Qnil;
|
|
} else {
|
|
return self;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* write(<i>frame</i>)
|
|
*
|
|
* Write image as frame of video stream.
|
|
* <i>frame</i> should be CvMat or subclass.
|
|
*/
|
|
VALUE
|
|
rb_write(VALUE self, VALUE frame)
|
|
{
|
|
if (!rb_obj_is_kind_of(frame, cCvMat::rb_class()))
|
|
rb_raise(rb_eTypeError, "argument 1 (frame) should be %s or subclass", rb_class2name(cCvMat::rb_class()));
|
|
cvWriteFrame(CVVIDEOWRITER(self), IPLIMAGE(frame));
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* Close vidoe writer.
|
|
*/
|
|
VALUE
|
|
rb_close(VALUE self)
|
|
{
|
|
CvVideoWriter *writer = CVVIDEOWRITER(self);
|
|
cvReleaseVideoWriter(&writer);
|
|
return Qnil;
|
|
}
|
|
|
|
|
|
__NAMESPACE_END_CVVIDEOWRITER
|
|
__NAMESPACE_END_OPENCV
|