/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
#include "video_decoder.h"
-#include "subtitle.h"
-#include "film.h"
#include "image.h"
-#include "ratio.h"
#include "i18n.h"
VideoDecoder::VideoDecoder (shared_ptr<const Film> f, shared_ptr<const VideoContent> c)
: Decoder (f)
- , _next_video (0)
, _video_content (c)
- , _frame_rate_conversion (c->video_frame_rate(), f->dcp_video_frame_rate())
- , _odd (false)
+ , _video_position (0)
{
}
-/** Called by subclasses when some video is ready.
- * @param image frame to emit.
- * @param same true if this frame is the same as the last one passed to this call.
- * @param t Time of the frame within the source.
- */
void
-VideoDecoder::video (shared_ptr<Image> image, bool same, Time t)
+VideoDecoder::video (shared_ptr<const ImageProxy> image, bool same, VideoContent::Frame frame)
{
- if (_frame_rate_conversion.skip && _odd) {
- _odd = !_odd;
- return;
+ switch (_video_content->video_frame_type ()) {
+ case VIDEO_FRAME_TYPE_2D:
+ Video (image, EYES_BOTH, PART_WHOLE, same, frame);
+ break;
+ case VIDEO_FRAME_TYPE_3D_ALTERNATE:
+ Video (image, (frame % 2) ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, same, frame / 2);
+ break;
+ case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
+ Video (image, EYES_LEFT, PART_LEFT_HALF, same, frame);
+ Video (image, EYES_RIGHT, PART_RIGHT_HALF, same, frame);
+ break;
+ case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
+ Video (image, EYES_LEFT, PART_TOP_HALF, same, frame);
+ Video (image, EYES_RIGHT, PART_BOTTOM_HALF, same, frame);
+ break;
+ case VIDEO_FRAME_TYPE_3D_LEFT:
+ Video (image, EYES_LEFT, PART_WHOLE, same, frame);
+ break;
+ case VIDEO_FRAME_TYPE_3D_RIGHT:
+ Video (image, EYES_RIGHT, PART_WHOLE, same, frame);
+ break;
}
-
- image->crop (_video_content->crop(), true);
-
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
-
- libdcp::Size const container_size = film->container()->size (film->full_frame ());
- libdcp::Size const image_size = _video_content->ratio()->size (container_size);
-
- shared_ptr<Image> out = image->scale_and_convert_to_rgb (image_size, film->scaler(), true);
-
- shared_ptr<Subtitle> sub;
- if (_timed_subtitle && _timed_subtitle->displayed_at (t)) {
- sub = _timed_subtitle->subtitle ();
- }
-
- if (sub) {
- Rect const tx = subtitle_transformed_area (
- float (image_size.width) / video_size().width,
- float (image_size.height) / video_size().height,
- sub->area(), film->subtitle_offset(), film->subtitle_scale()
- );
-
- shared_ptr<Image> im = sub->image()->scale (tx.size(), film->scaler(), true);
- out->alpha_blend (im, tx.position());
- }
-
- if (image_size != container_size) {
- assert (image_size.width <= container_size.width);
- assert (image_size.height <= container_size.height);
- shared_ptr<Image> im (new SimpleImage (PIX_FMT_RGB24, container_size, true));
- im->make_black ();
- im->copy (out, Position ((container_size.width - image_size.width) / 2, (container_size.height - image_size.height) / 2));
- out = im;
- }
-
- Video (out, same, t);
-
- if (_frame_rate_conversion.repeat) {
- Video (image, true, t + film->video_frames_to_time (1));
- _next_video = t + film->video_frames_to_time (2);
- } else {
- _next_video = t + film->video_frames_to_time (1);
- }
-
- _odd = !_odd;
-}
-
-/** Called by subclasses when a subtitle is ready.
- * s may be 0 to say that there is no current subtitle.
- * @param s New current subtitle, or 0.
- */
-void
-VideoDecoder::subtitle (shared_ptr<TimedSubtitle> s)
-{
- _timed_subtitle = s;
- if (_timed_subtitle) {
- Position const p = _timed_subtitle->subtitle()->position ();
- _timed_subtitle->subtitle()->set_position (Position (p.x - _video_content->crop().left, p.y - _video_content->crop().top));
- }
+ _video_position = frame + 1;
}
-bool
-VideoDecoder::video_done () const
-{
- shared_ptr<const Film> film = _film.lock ();
- assert (film);
-
- return (_video_content->length() - _next_video) < film->video_frames_to_time (1);
-}