* @brief Parent class for decoders of content.
*/
-#include <iostream>
-#include <stdint.h>
-#include <boost/lexical_cast.hpp>
#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"
-
-using std::string;
-using std::stringstream;
-using std::min;
-using std::pair;
-using std::list;
+#include "decoded.h"
+
+#include "i18n.h"
+
using boost::shared_ptr;
/** @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.
+ * @param o Decode options.
*/
-Decoder::Decoder (boost::shared_ptr<Film> f, boost::shared_ptr<const Options> o, Job* j)
+Decoder::Decoder (shared_ptr<const Film> f)
: _film (f)
- , _opt (o)
- , _job (j)
- , _video_frame (0)
- , _audio_frame (0)
- , _delay_line (0)
- , _delay_in_frames (0)
-{
-
-}
-
-Decoder::~Decoder ()
{
- delete _delay_line;
-}
-/** Start off a decode processing run. This should only be called once on
- * a given Decoder object.
- */
-void
-Decoder::process_begin ()
-{
- _delay_in_frames = _film->audio_delay() * audio_sample_rate() / 1000;
- _delay_line = new DelayLine (audio_channels(), _delay_in_frames);
}
-/** Finish off a decode processing run */
-void
-Decoder::process_end ()
+class DecodedSorter
{
- if (_delay_in_frames < 0 && _opt->decode_audio && audio_channels()) {
- shared_ptr<AudioBuffers> b (new AudioBuffers (audio_channels(), -_delay_in_frames));
- b->make_silent ();
- emit_audio (b);
- }
-
- if (_opt->decode_audio && audio_channels()) {
-
- /* 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_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_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_sample_rate());
-
- _film->log()->log (String::compose ("Emitting %1 frames of black video", black_video_frames));
-
- shared_ptr<Image> black (new CompactImage (pixel_format(), native_size()));
- black->make_black ();
- for (int i = 0; i < black_video_frames; ++i) {
- emit_video (black, shared_ptr<Subtitle> ());
- }
-
- /* Now recompute our check value */
- audio_short_by_frames = video_frames_to_audio_frames (_video_frame, audio_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<AudioBuffers> b (new AudioBuffers (audio_channels(), audio_short_by_frames));
- b->make_silent ();
- emit_audio (b);
- }
+public:
+ bool operator() (shared_ptr<Decoded> a, shared_ptr<Decoded> b)
+ {
+ return a->dcp_time < b->dcp_time;
}
-}
+};
-/** Start decoding */
-void
-Decoder::go ()
+shared_ptr<Decoded>
+Decoder::peek ()
{
- process_begin ();
-
- if (_job && !_film->dcp_length()) {
- _job->set_progress_unknown ();
- }
+ while (_pending.empty() && !pass ()) {}
- while (pass () == false) {
- if (_job && _film->dcp_length()) {
- _job->set_progress (float (_video_frame) / _film->length().get());
- }
+ if (_pending.empty ()) {
+ return shared_ptr<Decoded> ();
}
- process_end ();
+ return _pending.front ();
}
-/** 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<AudioBuffers> audio)
+Decoder::consume ()
{
- /* 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;
- }
- }
+ if (!_pending.empty ()) {
+ _pending.pop_front ();
}
-
- _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)
+Decoder::seek (ContentTime, bool)
{
- shared_ptr<FilterGraph> graph;
-
- list<shared_ptr<FilterGraph> >::iterator i = _filter_graphs.begin();
- while (i != _filter_graphs.end() && !(*i)->can_process (Size (frame->width, frame->height), (AVPixelFormat) frame->format)) {
- ++i;
- }
-
- 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;
- }
-
- list<shared_ptr<Image> > images = graph->process (frame);
-
- for (list<shared_ptr<Image> >::iterator i = images.begin(); i != images.end(); ++i) {
- shared_ptr<Subtitle> sub;
- if (_timed_subtitle && _timed_subtitle->displayed_at (double (video_frame()) / _film->frames_per_second())) {
- sub = _timed_subtitle->subtitle ();
- }
-
- emit_video (*i, sub);
- }
-}
-
-void
-Decoder::repeat_last_video ()
-{
- if (!_last_image) {
- _last_image.reset (new CompactImage (pixel_format(), native_size()));
- _last_image->make_black ();
- }
-
- emit_video (_last_image, _last_subtitle);
-}
-
-void
-Decoder::emit_video (shared_ptr<Image> image, shared_ptr<Subtitle> 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<AudioBuffers> audio)
-{
- Audio (audio, _audio_frame);
- _audio_frame += audio->frames ();
-}
-
-void
-Decoder::process_subtitle (shared_ptr<TimedSubtitle> 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));
- }
+ _pending.clear ();
}
projects / dcpomatic.git / blobdiff