#include "transcoder.h"
#include "log.h"
#include "film.h"
+#include "video_decoder.h"
using std::string;
using std::vector;
+using std::pair;
using boost::shared_ptr;
ExamineContentJob::ExamineContentJob (shared_ptr<Film> f, shared_ptr<Job> req)
void
ExamineContentJob::run ()
{
- /* Decode the content to get an accurate length */
-
- shared_ptr<Options> o (new Options ("", "", ""));
- o->out_size = Size (512, 512);
- o->apply_crop = false;
-
- descend (0.5);
-
- _decoder = decoder_factory (_film, o, this);
- _decoder->go ();
+ float progress_remaining = 1;
- _film->set_length (_decoder->video_frame());
+ /* Set the film's length to either
+ a) a length judged by running through the content or
+ b) the length from a decoder's header.
+ */
- _film->log()->log (String::compose ("Video length is %1 frames", _film->length()));
+ if (!_film->trust_content_header()) {
+ /* Decode the content to get an accurate length */
+
+ /* We don't want to use any existing length here, as progress
+ will be messed up.
+ */
+ _film->unset_length ();
+
+ shared_ptr<Options> o (new Options ("", "", ""));
+ o->out_size = Size (512, 512);
+ o->apply_crop = false;
+ o->decode_audio = false;
+
+ descend (0.5);
+
+ pair<shared_ptr<VideoDecoder>, shared_ptr<AudioDecoder> > decoders = decoder_factory (_film, o, this);
+
+ set_progress_unknown ();
+ while (!decoders.first->pass()) {
+ /* keep going */
+ }
+
+ _film->set_length (decoders.first->video_frame());
+
+ _film->log()->log (String::compose ("Video length examined as %1 frames", _film->length().get()));
+
+ ascend ();
+
+ progress_remaining -= 0.5;
+
+ } else {
- ascend ();
+ /* Get a quick decoder to get the content's length from its header.
+ It would have been nice to just use the thumbnail transcoder's decoder,
+ but that's a bit fiddly, and this isn't too expensive.
+ */
+
+ shared_ptr<Options> o (new Options ("", "", ""));
+ o->out_size = Size (1024, 1024);
+ pair<shared_ptr<VideoDecoder>, shared_ptr<AudioDecoder> > d = decoder_factory (_film, o, 0);
+ _film->set_length (d.first->length());
+
+ _film->log()->log (String::compose ("Video length obtained from header as %1 frames", _film->length().get()));
+ }
/* Now make thumbnails for it */
- descend (0.5);
+ descend (progress_remaining);
try {
- o.reset (new Options (_film->dir ("thumbs"), ".png", ""));
+ shared_ptr<Options> o (new Options (_film->dir ("thumbs"), ".png", ""));
o->out_size = _film->size ();
o->apply_crop = false;
o->decode_audio = false;
- if (_film->length() > 0) {
- o->decode_video_skip = _film->length().get() / 128;
- } else {
- o->decode_video_skip = 0;
- }
+ o->decode_video_skip = _film->length().get() / 128;
o->decode_subtitles = true;
shared_ptr<ImageMagickEncoder> e (new ImageMagickEncoder (_film, o));
Transcoder w (_film, o, this, e);
w.go ();
+
+ /* Now set the film's length from the transcoder's decoder, since we
+ went to all the trouble of going through the content.
+ */
+
+ _film->set_length (w.video_decoder()->video_frame());
} catch (std::exception& e) {