X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdecoder.cc;h=0901f73b020027cc733ab325c2085f494db65d45;hb=1f8b45c7fd49714628009f5ed2161fbaa2b4d729;hp=2f66aff68b4fb63fc5c5804472fe76eb9c41169d;hpb=3d9b5186aa39150e53aef3bab09f4350f85cb885;p=dcpomatic.git diff --git a/src/lib/decoder.cc b/src/lib/decoder.cc index 2f66aff68..0901f73b0 100644 --- a/src/lib/decoder.cc +++ b/src/lib/decoder.cc @@ -21,240 +21,56 @@ * @brief Parent class for decoders of content. */ -#include -#include -#include -#include "film.h" -#include "format.h" -#include "job.h" -#include "options.h" -#include "exceptions.h" -#include "image.h" -#include "util.h" -#include "log.h" #include "decoder.h" -#include "delay_line.h" -#include "subtitle.h" -#include "filter_graph.h" +#include "decoded.h" -using std::string; -using std::stringstream; -using std::min; -using std::pair; -using std::list; -using boost::shared_ptr; -using boost::optional; - -/** @param f Film. - * @param o Options. - * @param j Job that we are running within, or 0 - * @param minimal true to do the bare minimum of work; just run through the content. Useful for acquiring - * accurate frame counts as quickly as possible. This generates no video or audio output. - */ -Decoder::Decoder (boost::shared_ptr f, boost::shared_ptr o, Job* j) - : _film (f) - , _opt (o) - , _job (j) - , _video_frame (0) - , _audio_frame (0) - , _delay_line (0) - , _delay_in_frames (0) -{ - -} +#include "i18n.h" -Decoder::~Decoder () -{ - delete _delay_line; -} +using std::cout; +using boost::shared_ptr; -/** Start off a decode processing run. This should only be called once on - * a given Decoder object. +/** @param o Decode options. */ -void -Decoder::process_begin () -{ - if (_audio_stream) { - _delay_in_frames = _film->audio_delay() * _audio_stream.get().sample_rate() / 1000; - _delay_line = new DelayLine (_audio_stream.get().channels(), _delay_in_frames); - } -} - -/** Finish off a decode processing run */ -void -Decoder::process_end () +Decoder::Decoder () + : _done (false) { - if (_delay_in_frames < 0 && _opt->decode_audio && _audio_stream) { - shared_ptr b (new AudioBuffers (_audio_stream.get().channels(), -_delay_in_frames)); - b->make_silent (); - emit_audio (b); - } - - if (_opt->decode_audio && _audio_stream) { - - /* Ensure that our video and audio emissions are the same length */ - - int64_t audio_short_by_frames = video_frames_to_audio_frames (_video_frame, _audio_stream.get().sample_rate(), frames_per_second()) - _audio_frame; - - _film->log()->log ( - String::compose ( - "Decoder has emitted %1 video frames (which equals %2 audio frames) and %3 audio frames", - _video_frame, - video_frames_to_audio_frames (_video_frame, _audio_stream.get().sample_rate(), frames_per_second()), - _audio_frame - ) - ); - - if (audio_short_by_frames < 0) { - - _film->log()->log (String::compose ("Emitted %1 too many audio frames", -audio_short_by_frames)); - - /* We have emitted more audio than video. Emit enough black video frames so that we reverse this */ - int const black_video_frames = ceil (-audio_short_by_frames * frames_per_second() / _audio_stream.get().sample_rate()); - - _film->log()->log (String::compose ("Emitting %1 frames of black video", black_video_frames)); - - shared_ptr black (new CompactImage (pixel_format(), native_size())); - black->make_black (); - for (int i = 0; i < black_video_frames; ++i) { - emit_video (black, shared_ptr ()); - } - - /* Now recompute our check value */ - audio_short_by_frames = video_frames_to_audio_frames (_video_frame, _audio_stream.get().sample_rate(), frames_per_second()) - _audio_frame; - } - - if (audio_short_by_frames > 0) { - _film->log()->log (String::compose ("Emitted %1 too few audio frames", audio_short_by_frames)); - shared_ptr b (new AudioBuffers (_audio_stream.get().channels(), audio_short_by_frames)); - b->make_silent (); - emit_audio (b); - } - } -} - -/** Start decoding */ -void -Decoder::go () -{ - process_begin (); - - if (_job && !_film->dcp_length()) { - _job->set_progress_unknown (); - } - while (pass () == false) { - if (_job && _film->dcp_length()) { - _job->set_progress (float (_video_frame) / _film->length().get()); - } - } - - process_end (); } -/** Called by subclasses to tell the world that some audio data is ready - * @param data Audio data, in Film::audio_sample_format. - * @param size Number of bytes of data. - */ -void -Decoder::process_audio (shared_ptr audio) +struct DecodedSorter { - /* Maybe apply gain */ - if (_film->audio_gain() != 0) { - float const linear_gain = pow (10, _film->audio_gain() / 20); - for (int i = 0; i < audio->channels(); ++i) { - for (int j = 0; j < audio->frames(); ++j) { - audio->data(i)[j] *= linear_gain; - } - } + bool operator() (shared_ptr a, shared_ptr b) + { + return a->dcp_time < b->dcp_time; } +}; - _delay_line->feed (audio); - emit_audio (audio); -} - -/** Called by subclasses to tell the world that some video data is ready. - * We do some post-processing / filtering then emit it for listeners. - * @param frame to decode; caller manages memory. - */ -void -Decoder::process_video (AVFrame* frame) +shared_ptr +Decoder::peek () { - shared_ptr graph; - - list >::iterator i = _filter_graphs.begin(); - while (i != _filter_graphs.end() && !(*i)->can_process (Size (frame->width, frame->height), (AVPixelFormat) frame->format)) { - ++i; + while (!_done && _pending.empty ()) { + _done = pass (); } - if (i == _filter_graphs.end ()) { - graph.reset (new FilterGraph (_film, this, _opt->apply_crop, Size (frame->width, frame->height), (AVPixelFormat) frame->format)); - _filter_graphs.push_back (graph); - _film->log()->log (String::compose ("New graph for %1x%2, pixel format %3", frame->width, frame->height, frame->format)); - } else { - graph = *i; + if (_done && _pending.empty ()) { + return shared_ptr (); } - list > images = graph->process (frame); - - for (list >::iterator i = images.begin(); i != images.end(); ++i) { - shared_ptr sub; - if (_timed_subtitle && _timed_subtitle->displayed_at (double (video_frame()) / _film->frames_per_second())) { - sub = _timed_subtitle->subtitle (); - } - - emit_video (*i, sub); - } + _pending.sort (DecodedSorter ()); + return _pending.front (); } void -Decoder::repeat_last_video () +Decoder::consume () { - if (!_last_image) { - _last_image.reset (new CompactImage (pixel_format(), native_size())); - _last_image->make_black (); + if (!_pending.empty ()) { + _pending.pop_front (); } - - emit_video (_last_image, _last_subtitle); -} - -void -Decoder::emit_video (shared_ptr image, shared_ptr sub) -{ - TIMING ("Decoder emits %1", _video_frame); - Video (image, _video_frame, sub); - ++_video_frame; - - _last_image = image; - _last_subtitle = sub; -} - -void -Decoder::emit_audio (shared_ptr audio) -{ - Audio (audio, _audio_frame); - _audio_frame += audio->frames (); -} - -void -Decoder::process_subtitle (shared_ptr s) -{ - _timed_subtitle = s; - - if (_timed_subtitle && _opt->apply_crop) { - Position const p = _timed_subtitle->subtitle()->position (); - _timed_subtitle->subtitle()->set_position (Position (p.x - _film->crop().left, p.y - _film->crop().top)); - } -} - -void -Decoder::set_audio_stream (optional s) -{ - _audio_stream = s; } void -Decoder::set_subtitle_stream (optional s) +Decoder::seek (ContentTime, bool) { - _subtitle_stream = s; + _pending.clear (); + _done = false; }