X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_content.cc;h=c67a66ed8a00f669e768a32db5be27626524eb19;hb=aeb835a18c8df347e0ed68fb24631b320abeb611;hp=e38d9d265aefd723210845c877ac81e2ac8d54fc;hpb=0c66eaeac227d6aeb63a7a36e202ef87081dc222;p=dcpomatic.git diff --git a/src/lib/audio_content.cc b/src/lib/audio_content.cc index e38d9d265..c67a66ed8 100644 --- a/src/lib/audio_content.cc +++ b/src/lib/audio_content.cc @@ -1,7 +1,5 @@ -/* -*- c-basic-offset: 8; default-tab-width: 8; -*- */ - /* - Copyright (C) 2013 Carl Hetherington + Copyright (C) 2013-2015 Carl Hetherington This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -19,34 +17,278 @@ */ -#include #include "audio_content.h" +#include "film.h" +#include "exceptions.h" +#include "config.h" +#include "frame_rate_change.h" +#include "raw_convert.h" +#include "compose.hpp" +#include +#include +#include +#include +#include "i18n.h" + +using std::string; +using std::cout; +using std::vector; +using std::stringstream; +using std::fixed; +using std::setprecision; using boost::shared_ptr; +using boost::dynamic_pointer_cast; +using boost::optional; + +/** Something stream-related has changed */ +int const AudioContentProperty::AUDIO_STREAMS = 200; +int const AudioContentProperty::AUDIO_GAIN = 201; +int const AudioContentProperty::AUDIO_DELAY = 202; + +AudioContent::AudioContent (shared_ptr film) + : Content (film) + , _audio_gain (0) + , _audio_delay (Config::instance()->default_audio_delay ()) +{ + +} -int const AudioContentProperty::AUDIO_CHANNELS = 200; -int const AudioContentProperty::AUDIO_LENGTH = 201; -int const AudioContentProperty::AUDIO_FRAME_RATE = 202; +AudioContent::AudioContent (shared_ptr film, DCPTime s) + : Content (film, s) + , _audio_gain (0) + , _audio_delay (Config::instance()->default_audio_delay ()) +{ + +} -AudioContent::AudioContent (boost::filesystem::path f) - : Content (f) +AudioContent::AudioContent (shared_ptr film, boost::filesystem::path p) + : Content (film, p) + , _audio_gain (0) + , _audio_delay (Config::instance()->default_audio_delay ()) { } -AudioContent::AudioContent (shared_ptr node) - : Content (node) +AudioContent::AudioContent (shared_ptr film, cxml::ConstNodePtr node) + : Content (film, node) { + _audio_gain = node->number_child ("AudioGain"); + _audio_delay = node->number_child ("AudioDelay"); } -AudioContent::AudioContent (AudioContent const & o) - : Content (o) +AudioContent::AudioContent (shared_ptr film, vector > c) + : Content (film, c) { + shared_ptr ref = dynamic_pointer_cast (c[0]); + DCPOMATIC_ASSERT (ref); + + for (size_t i = 0; i < c.size(); ++i) { + shared_ptr ac = dynamic_pointer_cast (c[i]); + + if (ac->audio_gain() != ref->audio_gain()) { + throw JoinError (_("Content to be joined must have the same audio gain.")); + } + if (ac->audio_delay() != ref->audio_delay()) { + throw JoinError (_("Content to be joined must have the same audio delay.")); + } + } + + _audio_gain = ref->audio_gain (); + _audio_delay = ref->audio_delay (); } void AudioContent::as_xml (xmlpp::Node* node) const { - + boost::mutex::scoped_lock lm (_mutex); + node->add_child("AudioGain")->add_child_text (raw_convert (_audio_gain)); + node->add_child("AudioDelay")->add_child_text (raw_convert (_audio_delay)); +} + + +void +AudioContent::set_audio_gain (double g) +{ + { + boost::mutex::scoped_lock lm (_mutex); + _audio_gain = g; + } + + signal_changed (AudioContentProperty::AUDIO_GAIN); +} + +void +AudioContent::set_audio_delay (int d) +{ + { + boost::mutex::scoped_lock lm (_mutex); + _audio_delay = d; + } + + signal_changed (AudioContentProperty::AUDIO_DELAY); +} + +string +AudioContent::technical_summary () const +{ + string s = "audio :"; + BOOST_FOREACH (AudioStreamPtr i, audio_streams ()) { + s += String::compose ("stream channels %1 rate %2", i->channels(), i->frame_rate()); + } + + return s; +} + +void +AudioContent::set_audio_mapping (AudioMapping mapping) +{ + int c = 0; + BOOST_FOREACH (AudioStreamPtr i, audio_streams ()) { + AudioMapping stream_mapping (i->channels (), MAX_DCP_AUDIO_CHANNELS); + for (int j = 0; j < i->channels(); ++j) { + for (int k = 0; k < MAX_DCP_AUDIO_CHANNELS; ++k) { + stream_mapping.set (j, k, mapping.get (c, k)); + } + ++c; + } + i->set_mapping (stream_mapping); + } + + signal_changed (AudioContentProperty::AUDIO_STREAMS); +} + +AudioMapping +AudioContent::audio_mapping () const +{ + int channels = 0; + BOOST_FOREACH (AudioStreamPtr i, audio_streams ()) { + channels += i->channels (); + } + + AudioMapping merged (channels, MAX_DCP_AUDIO_CHANNELS); + + int c = 0; + int s = 0; + BOOST_FOREACH (AudioStreamPtr i, audio_streams ()) { + AudioMapping mapping = i->mapping (); + for (int j = 0; j < mapping.input_channels(); ++j) { + for (int k = 0; k < MAX_DCP_AUDIO_CHANNELS; ++k) { + merged.set (c, k, mapping.get (j, k)); + } + ++c; + } + ++s; + } + + return merged; +} + +/** @return the frame rate that this content should be resampled to in order + * that it is in sync with the active video content at its start time. + */ +int +AudioContent::resampled_audio_frame_rate () const +{ + shared_ptr film = _film.lock (); + DCPOMATIC_ASSERT (film); + + /* Resample to a DCI-approved sample rate */ + double t = has_rate_above_48k() ? 96000 : 48000; + + FrameRateChange frc = film->active_frame_rate_change (position ()); + + /* Compensate if the DCP is being run at a different frame rate + to the source; that is, if the video is run such that it will + look different in the DCP compared to the source (slower or faster). + */ + + if (frc.change_speed) { + t /= frc.speed_up; + } + + return lrint (t); +} + +string +AudioContent::processing_description () const +{ + vector streams = audio_streams (); + if (streams.empty ()) { + return ""; + } + + /* Possible answers are: + 1. all audio will be resampled from x to y. + 2. all audio will be resampled to y (from a variety of rates) + 3. some audio will be resampled to y (from a variety of rates) + 4. nothing will be resampled. + */ + + bool not_resampled = false; + bool resampled = false; + bool same = true; + + optional common_frame_rate; + BOOST_FOREACH (AudioStreamPtr i, streams) { + if (i->frame_rate() != resampled_audio_frame_rate()) { + resampled = true; + } else { + not_resampled = true; + } + + if (common_frame_rate && common_frame_rate != i->frame_rate ()) { + same = false; + } + common_frame_rate = i->frame_rate (); + } + + if (not_resampled && !resampled) { + return _("Audio will not be resampled"); + } + + if (not_resampled && resampled) { + return String::compose (_("Some audio will be resampled to %1kHz"), resampled_audio_frame_rate ()); + } + + if (!not_resampled && resampled) { + if (same) { + return String::compose (_("Audio will be resampled from %1kHz to %2kHz"), common_frame_rate.get(), resampled_audio_frame_rate ()); + } else { + return String::compose (_("Audio will be resampled to %1kHz"), resampled_audio_frame_rate ()); + } + } + + return ""; +} + +/** @return true if any stream in this content has a sampling rate of more than 48kHz */ +bool +AudioContent::has_rate_above_48k () const +{ + BOOST_FOREACH (AudioStreamPtr i, audio_streams ()) { + if (i->frame_rate() > 48000) { + return true; + } + } + + return false; +} + +/** @return User-visible names of each of our audio channels */ +vector +AudioContent::audio_channel_names () const +{ + vector n; + + int t = 1; + BOOST_FOREACH (AudioStreamPtr i, audio_streams ()) { + for (int j = 0; j < i->channels(); ++j) { + n.push_back (String::compose ("%1:%2", t, j + 1)); + } + ++t; + } + + return n; }