#include "video_decoder.h"
#include "image.h"
+#include "content_video.h"
#include "i18n.h"
using std::cout;
+using std::list;
using boost::shared_ptr;
+using boost::optional;
-VideoDecoder::VideoDecoder (shared_ptr<const Film> f, shared_ptr<const VideoContent> c)
- : Decoder (f)
+VideoDecoder::VideoDecoder (shared_ptr<const VideoContent> c)
+#ifdef DCPOMATIC_DEBUG
+ : test_gaps (0)
, _video_content (c)
- , _video_position (0)
+#else
+ : _video_content (c)
+#endif
{
}
+list<ContentVideo>
+VideoDecoder::decoded_video (VideoFrame frame)
+{
+ list<ContentVideo> output;
+
+ for (list<ContentVideo>::const_iterator i = _decoded_video.begin(); i != _decoded_video.end(); ++i) {
+ if (i->frame == frame) {
+ output.push_back (*i);
+ }
+ }
+
+ return output;
+}
+
+/** Get all frames which exist in the content at a given frame index.
+ * @param frame Frame index.
+ * @param accurate true to try hard to return frames at the precise time that was requested, otherwise frames nearby may be returned.
+ * @return Frames; there may be none (if there is no video there), 1 for 2D or 2 for 3D.
+ */
+list<ContentVideo>
+VideoDecoder::get_video (VideoFrame frame, bool accurate)
+{
+ if (_decoded_video.empty() || (frame < _decoded_video.front().frame || frame > (_decoded_video.back().frame + 1))) {
+ /* Either we have no decoded data, or what we do have is a long way from what we want: seek */
+ seek (ContentTime::from_frames (frame, _video_content->video_frame_rate()), accurate);
+ }
+
+ list<ContentVideo> dec;
+
+ /* Now enough pass() calls should either:
+ * (a) give us what we want, or
+ * (b) hit the end of the decoder.
+ */
+ if (accurate) {
+ /* We are being accurate, so we want the right frame.
+ * This could all be one statement but it's split up for clarity.
+ */
+ while (true) {
+ if (!decoded_video(frame).empty ()) {
+ /* We got what we want */
+ break;
+ }
+
+ if (pass ()) {
+ /* The decoder has nothing more for us */
+ break;
+ }
+
+ if (!_decoded_video.empty() && _decoded_video.front().frame > frame) {
+ /* We're never going to get the frame we want. Perhaps the caller is asking
+ * for a video frame before the content's video starts (if its audio
+ * begins before its video, for example).
+ */
+ break;
+ }
+ }
+
+ dec = decoded_video (frame);
+ } else {
+ /* Any frame will do: use the first one that comes out of pass() */
+ while (_decoded_video.empty() && !pass ()) {}
+ if (!_decoded_video.empty ()) {
+ dec.push_back (_decoded_video.front ());
+ }
+ }
+
+ /* Clean up decoded_video */
+ while (!_decoded_video.empty() && _decoded_video.front().frame < (frame - 1)) {
+ _decoded_video.pop_front ();
+ }
+
+ return dec;
+}
+
+
+/** Called by subclasses when they have a video frame ready */
void
-VideoDecoder::video (shared_ptr<const ImageProxy> image, bool same, VideoContent::Frame frame)
+VideoDecoder::video (shared_ptr<const ImageProxy> image, VideoFrame frame)
{
+ /* We should not receive the same thing twice */
+ assert (_decoded_video.empty() || frame != _decoded_video.back().frame);
+
+ /* Fill in gaps */
+ /* XXX: 3D */
+
+ while (!_decoded_video.empty () && (_decoded_video.back().frame + 1) < frame) {
+#ifdef DCPOMATIC_DEBUG
+ test_gaps++;
+#endif
+ _decoded_video.push_back (
+ ContentVideo (
+ _decoded_video.back().image,
+ _decoded_video.back().eyes,
+ _decoded_video.back().part,
+ _decoded_video.back().frame + 1
+ )
+ );
+ }
+
switch (_video_content->video_frame_type ()) {
case VIDEO_FRAME_TYPE_2D:
- Video (image, EYES_BOTH, PART_WHOLE, same, frame);
+ _decoded_video.push_back (ContentVideo (image, EYES_BOTH, PART_WHOLE, frame));
break;
case VIDEO_FRAME_TYPE_3D_ALTERNATE:
- Video (image, (frame % 2) ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, same, frame / 2);
+ _decoded_video.push_back (ContentVideo (image, (frame % 2) ? EYES_RIGHT : EYES_LEFT, PART_WHOLE, frame));
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);
+ _decoded_video.push_back (ContentVideo (image, EYES_LEFT, PART_LEFT_HALF, frame));
+ _decoded_video.push_back (ContentVideo (image, EYES_RIGHT, PART_RIGHT_HALF, 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);
+ _decoded_video.push_back (ContentVideo (image, EYES_LEFT, PART_TOP_HALF, frame));
+ _decoded_video.push_back (ContentVideo (image, EYES_RIGHT, PART_BOTTOM_HALF, frame));
break;
case VIDEO_FRAME_TYPE_3D_LEFT:
- Video (image, EYES_LEFT, PART_WHOLE, same, frame);
+ _decoded_video.push_back (ContentVideo (image, EYES_LEFT, PART_WHOLE, frame));
break;
case VIDEO_FRAME_TYPE_3D_RIGHT:
- Video (image, EYES_RIGHT, PART_WHOLE, same, frame);
+ _decoded_video.push_back (ContentVideo (image, EYES_RIGHT, PART_WHOLE, frame));
break;
+ default:
+ assert (false);
}
-
- _video_position = frame + 1;
+}
+
+void
+VideoDecoder::seek (ContentTime, bool)
+{
+ _decoded_video.clear ();
}
projects / dcpomatic.git / blobdiff