#include "subtitle.h"
#include "film.h"
#include "image.h"
-#include "log.h"
-#include "options.h"
-#include "job.h"
+#include "ratio.h"
#include "i18n.h"
using std::cout;
using boost::shared_ptr;
-using boost::optional;
-VideoDecoder::VideoDecoder (shared_ptr<Film> f, DecodeOptions o)
- : Decoder (f, o)
- , _video_frame (0)
- , _last_source_time (0)
+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)
{
}
-/** Called by subclasses to tell the world that some video data is ready.
- * We find a subtitle then emit it for listeners.
+/** Called by subclasses when some video is ready.
* @param image frame to emit.
- * @param t Time of the frame within the source, in seconds.
+ * @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::emit_video (shared_ptr<Image> image, bool same, double t)
+VideoDecoder::video (shared_ptr<Image> image, bool same, Time t)
{
+ if (_frame_rate_conversion.skip && _odd) {
+ _odd = !_odd;
+ return;
+ }
+
+ 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 ();
}
- Video (image, same, sub, t);
- ++_video_frame;
-
- _last_source_time = t;
+ 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;
}
-/** Set up the current subtitle. This will be put onto frames that
- * fit within its time specification. s may be 0 to say that there
- * is no current subtitle.
+/** 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::emit_subtitle (shared_ptr<TimedSubtitle> s)
+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 - _film->crop().left, p.y - _film->crop().top));
+ _timed_subtitle->subtitle()->set_position (Position (p.x - _video_content->crop().left, p.y - _video_content->crop().top));
}
}
-/** Set which stream of subtitles we should use from our source.
- * @param s Stream to use.
- */
-void
-VideoDecoder::set_subtitle_stream (shared_ptr<SubtitleStream> s)
-{
- _subtitle_stream = s;
-}
-
-void
-VideoDecoder::set_progress (Job* j) const
+bool
+VideoDecoder::video_done () const
{
- assert (j);
+ shared_ptr<const Film> film = _film.lock ();
+ assert (film);
- if (_film->length()) {
- j->set_progress (float (_video_frame) / _film->length().get());
- }
+ return (_video_content->length() - _next_video) < film->video_frames_to_time (1);
}