Fix some translator comments.
[dcpomatic.git] / src / lib / ffmpeg_encoder.cc
index 61ca1ae008bc47fa99c92178ec5a863be0ef28be..00ad75526bb9e6a231c72032d7ade3badab685de 100644 (file)
 
 */
 
+
+#include "butler.h"
+#include "cross.h"
 #include "ffmpeg_encoder.h"
 #include "film.h"
+#include "image.h"
 #include "job.h"
+#include "log.h"
 #include "player.h"
 #include "player_video.h"
-#include "log.h"
-#include "image.h"
-#include "cross.h"
-#include "butler.h"
 #include "compose.hpp"
 #include <iostream>
 
 #include "i18n.h"
 
+
 using std::cout;
 using std::list;
 using std::make_shared;
-using std::map;
-using std::pair;
-using std::runtime_error;
 using std::shared_ptr;
 using std::string;
 using std::weak_ptr;
@@ -48,7 +47,7 @@ using namespace dcpomatic;
 using namespace boost::placeholders;
 #endif
 
-/** @param key Key to use to encrypt MP4 outputs */
+
 FFmpegEncoder::FFmpegEncoder (
        shared_ptr<const Film> film,
        weak_ptr<Job> job,
@@ -60,56 +59,71 @@ FFmpegEncoder::FFmpegEncoder (
        int x264_crf
        )
        : Encoder (film, job)
+       , _output_audio_channels(mixdown_to_stereo ? 2 : (_film->audio_channels() > 8 ? 16 : _film->audio_channels()))
        , _history (200)
        , _output (output)
        , _format (format)
        , _split_reels (split_reels)
        , _audio_stream_per_channel (audio_stream_per_channel)
        , _x264_crf (x264_crf)
+       , _butler(
+               _film,
+               _player,
+               mixdown_to_stereo ? stereo_map() : many_channel_map(),
+               _output_audio_channels,
+               boost::bind(&PlayerVideo::force, FFmpegFileEncoder::pixel_format(format)),
+               VideoRange::VIDEO,
+               Image::Alignment::PADDED,
+               false,
+               false,
+               Butler::Audio::ENABLED
+               )
 {
-       _player->set_always_burn_open_subtitles ();
-       _player->set_play_referenced ();
-
-       int const ch = film->audio_channels ();
-
-       AudioMapping map;
-       if (mixdown_to_stereo) {
-               _output_audio_channels = 2;
-               map = AudioMapping (ch, 2);
-               float const overall_gain = 2 / (4 + sqrt(2));
-               float const minus_3dB = 1 / sqrt(2);
-               if (ch == 2) {
-                       map.set (dcp::Channel::LEFT, 0, 1);
-                       map.set (dcp::Channel::RIGHT, 1, 1);
-               } else if (ch == 4) {
-                       map.set (dcp::Channel::LEFT,   0, overall_gain);
-                       map.set (dcp::Channel::RIGHT,  1, overall_gain);
-                       map.set (dcp::Channel::CENTRE, 0, overall_gain * minus_3dB);
-                       map.set (dcp::Channel::CENTRE, 1, overall_gain * minus_3dB);
-                       map.set (dcp::Channel::LS,     0, overall_gain);
-               } else if (ch >= 6) {
-                       map.set (dcp::Channel::LEFT,   0, overall_gain);
-                       map.set (dcp::Channel::RIGHT,  1, overall_gain);
-                       map.set (dcp::Channel::CENTRE, 0, overall_gain * minus_3dB);
-                       map.set (dcp::Channel::CENTRE, 1, overall_gain * minus_3dB);
-                       map.set (dcp::Channel::LS,     0, overall_gain);
-                       map.set (dcp::Channel::RS,     1, overall_gain);
-               }
-               /* XXX: maybe we should do something better for >6 channel DCPs */
-       } else {
-               /* Our encoders don't really want to encode any channel count between 9 and 15 inclusive,
-                * so let's just use 16 channel exports for any project with more than 8 channels.
-                */
-               _output_audio_channels = ch > 8 ? 16 : ch;
-               map = AudioMapping (ch, _output_audio_channels);
-               for (int i = 0; i < ch; ++i) {
-                       map.set (i, i, 1);
-               }
+       _player.set_always_burn_open_subtitles();
+       _player.set_play_referenced();
+}
+
+
+AudioMapping
+FFmpegEncoder::stereo_map() const
+{
+       auto map = AudioMapping(_film->audio_channels(), 2);
+       float const overall_gain = 2 / (4 + sqrt(2));
+       float const minus_3dB = 1 / sqrt(2);
+       switch (_film->audio_channels()) {
+       case 2:
+               map.set(dcp::Channel::LEFT, 0, 1);
+               map.set(dcp::Channel::RIGHT, 1, 1);
+               break;
+       case 4:
+               map.set(dcp::Channel::LEFT,   0, overall_gain);
+               map.set(dcp::Channel::RIGHT,  1, overall_gain);
+               map.set(dcp::Channel::CENTRE, 0, overall_gain * minus_3dB);
+               map.set(dcp::Channel::CENTRE, 1, overall_gain * minus_3dB);
+               map.set(dcp::Channel::LS,     0, overall_gain);
+               break;
+       case 6:
+               map.set(dcp::Channel::LEFT,   0, overall_gain);
+               map.set(dcp::Channel::RIGHT,  1, overall_gain);
+               map.set(dcp::Channel::CENTRE, 0, overall_gain * minus_3dB);
+               map.set(dcp::Channel::CENTRE, 1, overall_gain * minus_3dB);
+               map.set(dcp::Channel::LS,     0, overall_gain);
+               map.set(dcp::Channel::RS,     1, overall_gain);
+               break;
        }
+       /* XXX: maybe we should do something better for >6 channel DCPs */
+       return map;
+}
+
 
-       _butler = std::make_shared<Butler>(
-               _film, _player, map, _output_audio_channels, bind(&PlayerVideo::force, _1, FFmpegFileEncoder::pixel_format(format)), VideoRange::VIDEO, true, false
-               );
+AudioMapping
+FFmpegEncoder::many_channel_map() const
+{
+       auto map = AudioMapping(_film->audio_channels(), _output_audio_channels);
+       for (int i = 0; i < _film->audio_channels(); ++i) {
+               map.set(i, i, 1);
+       }
+       return map;
 }
 
 
@@ -161,12 +175,12 @@ FFmpegEncoder::go ()
 
        auto const video_frame = DCPTime::from_frames (1, _film->video_frame_rate ());
        int const audio_frames = video_frame.frames_round(_film->audio_frame_rate());
-       float* interleaved = new float[_output_audio_channels * audio_frames];
+       std::vector<float> interleaved(_output_audio_channels * audio_frames);
        auto deinterleaved = make_shared<AudioBuffers>(_output_audio_channels, audio_frames);
        int const gets_per_frame = _film->three_d() ? 2 : 1;
-       for (DCPTime i; i < _film->length(); i += video_frame) {
+       for (DCPTime time; time < _film->length(); time += video_frame) {
 
-               if (file_encoders.size() > 1 && !reel->contains(i)) {
+               if (file_encoders.size() > 1 && !reel->contains(time)) {
                        /* Next reel and file */
                        ++reel;
                        ++encoder;
@@ -176,14 +190,17 @@ FFmpegEncoder::go ()
 
                for (int j = 0; j < gets_per_frame; ++j) {
                        Butler::Error e;
-                       auto v = _butler->get_video (true, &e);
-                       _butler->rethrow ();
-                       if (!v.first) {
-                               throw DecodeError(String::compose("Error during decoding: %1", e.summary()));
-                       }
-                       auto fe = encoder->get (v.first->eyes());
-                       if (fe) {
-                               fe->video(v.first, v.second - reel->from);
+                       auto video = _butler.get_video(Butler::Behaviour::BLOCKING, &e);
+                       _butler.rethrow();
+                       if (video.first) {
+                               auto fe = encoder->get(video.first->eyes());
+                               if (fe) {
+                                       fe->video(video.first, video.second - reel->from);
+                               }
+                       } else {
+                               if (e.code != Butler::Error::Code::FINISHED) {
+                                       throw DecodeError(String::compose("Error during decoding: %1", e.summary()));
+                               }
                        }
                }
 
@@ -191,19 +208,19 @@ FFmpegEncoder::go ()
 
                {
                        boost::mutex::scoped_lock lm (_mutex);
-                       _last_time = i;
+                       _last_time = time;
                }
 
                auto job = _job.lock ();
                if (job) {
-                       job->set_progress (float(i.get()) / _film->length().get());
+                       job->set_progress(float(time.get()) / _film->length().get());
                }
 
                waker.nudge ();
 
-               _butler->get_audio (interleaved, audio_frames);
+               _butler.get_audio(Butler::Behaviour::BLOCKING, interleaved.data(), audio_frames);
                /* XXX: inefficient; butler interleaves and we deinterleave again */
-               float* p = interleaved;
+               float* p = interleaved.data();
                for (int j = 0; j < audio_frames; ++j) {
                        for (int k = 0; k < _output_audio_channels; ++k) {
                                deinterleaved->data(k)[j] = *p++;
@@ -211,7 +228,6 @@ FFmpegEncoder::go ()
                }
                encoder->audio (deinterleaved);
        }
-       delete[] interleaved;
 
        for (auto i: file_encoders) {
                i.flush ();
@@ -245,14 +261,14 @@ FFmpegEncoder::FileEncoderSet::FileEncoderSet (
        )
 {
        if (three_d) {
-               /// TRANSLATORS: L here is an abbreviation for "left", to indicate the left-eye part of a 3D export
                _encoders[Eyes::LEFT] = make_shared<FFmpegFileEncoder>(
                        video_frame_size, video_frame_rate, audio_frame_rate, channels, format,
+                       // TRANSLATORS: L here is an abbreviation for "left", to indicate the left-eye part of a 3D export
                        audio_stream_per_channel, x264_crf, String::compose("%1_%2%3", output.string(), _("L"), extension)
                        );
-               /// TRANSLATORS: R here is an abbreviation for "right", to indicate the right-eye part of a 3D export
                _encoders[Eyes::RIGHT] = make_shared<FFmpegFileEncoder>(
                        video_frame_size, video_frame_rate, audio_frame_rate, channels, format,
+                       // TRANSLATORS: R here is an abbreviation for "right", to indicate the right-eye part of a 3D export
                        audio_stream_per_channel, x264_crf, String::compose("%1_%2%3", output.string(), _("R"), extension)
                        );
        } else {