#include "exceptions.h"
#include "film.h"
#include "frame_rate_change.h"
+#include "maths_util.h"
+#include "video_content.h"
#include <dcp/raw_convert.h>
#include <libcxml/cxml.h>
#include <libxml++/libxml++.h>
int const AudioContentProperty::STREAMS = 200;
int const AudioContentProperty::GAIN = 201;
int const AudioContentProperty::DELAY = 202;
+int const AudioContentProperty::FADE_IN = 203;
+int const AudioContentProperty::FADE_OUT = 204;
+int const AudioContentProperty::USE_SAME_FADES_AS_VIDEO = 205;
AudioContent::AudioContent (Content* parent)
{
_gain = node->number_child<double> ("AudioGain");
_delay = node->number_child<int> ("AudioDelay");
+ _fade_in = ContentTime(node->optional_number_child<ContentTime::Type>("AudioFadeIn").get_value_or(0));
+ _fade_out = ContentTime(node->optional_number_child<ContentTime::Type>("AudioFadeOut").get_value_or(0));
+ _use_same_fades_as_video = node->optional_bool_child("AudioUseSameFadesAsVideo").get_value_or(false);
/* Backwards compatibility */
auto r = node->optional_number_child<double>("AudioVideoFrameRate");
}
-AudioContent::AudioContent (Content* parent, vector<shared_ptr<Content> > c)
+AudioContent::AudioContent (Content* parent, vector<shared_ptr<Content>> c)
: ContentPart (parent)
{
auto ref = c[0]->audio;
boost::mutex::scoped_lock lm (_mutex);
node->add_child("AudioGain")->add_child_text(raw_convert<string>(_gain));
node->add_child("AudioDelay")->add_child_text(raw_convert<string>(_delay));
+ node->add_child("AudioFadeIn")->add_child_text(raw_convert<string>(_fade_in.get()));
+ node->add_child("AudioFadeOut")->add_child_text(raw_convert<string>(_fade_out.get()));
+ node->add_child("AudioUseSameFadesAsVideo")->add_child_text(_use_same_fades_as_video ? "1" : "0");
}
{
set_gain (c->_gain);
set_delay (c->_delay);
+ set_fade_in (c->fade_in());
+ set_fade_out (c->fade_out());
size_t i = 0;
size_t j = 0;
/* XXX: we're in trouble if streams have different rates */
trim = trim.round (_streams.front()->frame_rate());
}
+
+
+ContentTime
+AudioContent::fade_in () const
+{
+ boost::mutex::scoped_lock lm (_mutex);
+ if (_use_same_fades_as_video && _parent->video) {
+ return dcpomatic::ContentTime::from_frames(_parent->video->fade_in(), _parent->video_frame_rate().get_value_or(24));
+ }
+
+ return _fade_in;
+}
+
+
+ContentTime
+AudioContent::fade_out () const
+{
+ boost::mutex::scoped_lock lm (_mutex);
+ if (_use_same_fades_as_video && _parent->video) {
+ return dcpomatic::ContentTime::from_frames(_parent->video->fade_out(), _parent->video_frame_rate().get_value_or(24));
+ }
+
+ return _fade_out;
+}
+
+
+void
+AudioContent::set_fade_in (ContentTime t)
+{
+ maybe_set (_fade_in, t, AudioContentProperty::FADE_IN);
+}
+
+
+void
+AudioContent::set_fade_out (ContentTime t)
+{
+ maybe_set (_fade_out, t, AudioContentProperty::FADE_OUT);
+}
+
+
+void
+AudioContent::set_use_same_fades_as_video (bool s)
+{
+ maybe_set (_use_same_fades_as_video, s, AudioContentProperty::USE_SAME_FADES_AS_VIDEO);
+}
+
+
+vector<float>
+AudioContent::fade (AudioStreamPtr stream, Frame frame, Frame length, int frame_rate) const
+{
+ auto const in = fade_in().frames_round(frame_rate);
+ auto const out = fade_out().frames_round(frame_rate);
+
+ /* Where the start trim ends, at frame_rate */
+ auto const trim_start = _parent->trim_start().frames_round(frame_rate);
+ /* Where the end trim starts within the whole length of the content, at frame_rate */
+ auto const trim_end = ContentTime(ContentTime::from_frames(stream->length(), stream->frame_rate()) - _parent->trim_end()).frames_round(frame_rate);
+
+ if (
+ (in == 0 || (frame >= (trim_start + in))) &&
+ (out == 0 || ((frame + length) < (trim_end - out)))
+ ) {
+ /* This section starts after the fade in and ends before the fade out */
+ return {};
+ }
+
+ /* Start position relative to the start of the fade in */
+ auto in_start = frame - trim_start;
+ /* Start position relative to the start of the fade out */
+ auto out_start = frame - (trim_end - out);
+
+ vector<float> coeffs(length);
+ for (auto coeff = 0; coeff < length; ++coeff) {
+ coeffs[coeff] = 1.0;
+ if (in) {
+ coeffs[coeff] *= logarithmic_fade_in_curve(static_cast<float>(in_start + coeff) / in);
+ }
+ if (out) {
+ coeffs[coeff] *= logarithmic_fade_out_curve(static_cast<float>(out_start + coeff) / out);
+ }
+ }
+
+ return coeffs;
+}
+