Aegisub/src/video_frame.cpp

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// Copyright (c) 2013, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
#include "config.h"
#include "video_frame.h"
#include <boost/gil/gil_all.hpp>
#include <wx/image.h>
VideoFrame::VideoFrame(const unsigned char *data, size_t width, size_t height, size_t pitch, bool flipped)
: data(data, data + width * height * 4)
, width(width)
, height(height)
, pitch(pitch)
, flipped(flipped)
{
}
namespace {
// We actually have bgr_, not bgra, so we need a custom converter which ignores the alpha channel
struct color_converter {
template <typename P1, typename P2>
void operator()(P1 const& src, P2& dst) const {
using namespace boost::gil;
dst = rgb8_pixel_t(
get_color(src, red_t()),
get_color(src, green_t()),
get_color(src, blue_t()));
}
};
}
wxImage GetImage(VideoFrame const& frame) {
using namespace boost::gil;
wxImage img(frame.width, frame.height);
auto src = interleaved_view(frame.width, frame.height, (bgra8_pixel_t*)frame.data.data(), frame.pitch);
auto dst = interleaved_view(frame.width, frame.height, (rgb8_pixel_t*)img.GetData(), 3 * frame.width);
if (frame.flipped)
src = flipped_up_down_view(src);
copy_and_convert_pixels(src, dst, color_converter());
return img;
}