swaroop: beginnings of DCP -> ecinema support.

[dcpomatic.git] / src / lib / ffmpeg_file_encoder.cc

diff --git a/src/lib/ffmpeg_file_encoder.cc b/src/lib/ffmpeg_file_encoder.cc
index 52977ad5bb6b12fd02cdc27eabd8c745d41267ab..af6066bfd4cfb524aefcd8ab240ea6d5b514a7a0 100644 (file)
--- a/src/lib/ffmpeg_file_encoder.cc
+++ b/src/lib/ffmpeg_file_encoder.cc
@@ -26,7 +26,6 @@
 #include "log.h"
 #include "image.h"
 #include "cross.h"
-#include "butler.h"
 #include "compose.hpp"
 #include <iostream>
 
@@ -39,25 +38,24 @@ using std::pair;
 using boost::shared_ptr;
 using boost::bind;
 using boost::weak_ptr;
+using boost::optional;
+using namespace dcpomatic;
 
 int FFmpegFileEncoder::_video_stream_index = 0;
 int FFmpegFileEncoder::_audio_stream_index = 1;
 
-static AVPixelFormat
-force_pixel_format (AVPixelFormat, AVPixelFormat out)
-{
-       return out;
-}
-
 FFmpegFileEncoder::FFmpegFileEncoder (
        dcp::Size video_frame_size,
        int video_frame_rate,
        int audio_frame_rate,
        int channels,
-       shared_ptr<Log> log,
        ExportFormat format,
        int x264_crf,
        boost::filesystem::path output
+#ifdef DCPOMATIC_VARIANT_SWAROOP
+       , optional<dcp::Key> key
+       , optional<string> id
+#endif
        )
        : _video_options (0)
        , _audio_channels (channels)
@@ -65,11 +63,11 @@ FFmpegFileEncoder::FFmpegFileEncoder (
        , _video_frame_size (video_frame_size)
        , _video_frame_rate (video_frame_rate)
        , _audio_frame_rate (audio_frame_rate)
-       , _log (log)
 {
+       _pixel_format = pixel_format (format);
+
        switch (format) {
        case EXPORT_FORMAT_PRORES:
-               _pixel_format = AV_PIX_FMT_YUV422P10;
                _sample_format = AV_SAMPLE_FMT_S16;
                _video_codec_name = "prores_ks";
                _audio_codec_name = "pcm_s16le";
@@ -77,7 +75,6 @@ FFmpegFileEncoder::FFmpegFileEncoder (
                av_dict_set (&_video_options, "threads", "auto", 0);
                break;
        case EXPORT_FORMAT_H264:
-               _pixel_format = AV_PIX_FMT_YUV420P;
                _sample_format = AV_SAMPLE_FMT_FLTP;
                _video_codec_name = "libx264";
                _audio_codec_name = "aac";
@@ -88,9 +85,13 @@ FFmpegFileEncoder::FFmpegFileEncoder (
        setup_video ();
        setup_audio ();
 
-       avformat_alloc_output_context2 (&_format_context, 0, 0, _output.string().c_str());
+#ifdef DCPOMATIC_VARIANT_SWAROOP
+       int r = avformat_alloc_output_context2 (&_format_context, av_guess_format("mp4", 0, 0), 0, 0);
+#else
+       int r = avformat_alloc_output_context2 (&_format_context, 0, 0, _output.string().c_str());
+#endif
        if (!_format_context) {
-               throw runtime_error ("could not allocate FFmpeg format context");
+               throw runtime_error (String::compose("could not allocate FFmpeg format context (%1)", r));
        }
 
        _video_stream = avformat_new_stream (_format_context, _video_codec);
@@ -113,7 +114,7 @@ FFmpegFileEncoder::FFmpegFileEncoder (
                throw runtime_error ("could not open FFmpeg video codec");
        }
 
-       int r = avcodec_open2 (_audio_codec_context, _audio_codec, 0);
+       r = avcodec_open2 (_audio_codec_context, _audio_codec, 0);
        if (r < 0) {
                char buffer[256];
                av_strerror (r, buffer, sizeof(buffer));
@@ -124,6 +125,22 @@ FFmpegFileEncoder::FFmpegFileEncoder (
                throw runtime_error ("could not open FFmpeg output file");
        }
 
+#ifdef DCPOMATIC_VARIANT_SWAROOP
+       if (key) {
+               AVDictionary* options = 0;
+               av_dict_set (&options, "encryption_key", key->hex().c_str(), 0);
+               /* XXX: is this OK? */
+               av_dict_set (&options, "encryption_kid", "00000000000000000000000000000000", 0);
+               av_dict_set (&options, "encryption_scheme", "cenc-aes-ctr", 0);
+       }
+
+       if (id) {
+               if (av_dict_set(&_format_context->metadata, SWAROOP_ID_TAG, id->c_str(), 0) < 0) {
+                       throw runtime_error ("Could not write ID to output");
+               }
+       }
+#endif
+
        if (avformat_write_header (_format_context, 0) < 0) {
                throw runtime_error ("could not write header to FFmpeg output file");
        }
@@ -131,6 +148,21 @@ FFmpegFileEncoder::FFmpegFileEncoder (
        _pending_audio.reset (new AudioBuffers(channels, 0));
 }
 
+AVPixelFormat
+FFmpegFileEncoder::pixel_format (ExportFormat format)
+{
+       switch (format) {
+       case EXPORT_FORMAT_PRORES:
+               return AV_PIX_FMT_YUV422P10;
+       case EXPORT_FORMAT_H264:
+               return AV_PIX_FMT_YUV420P;
+       default:
+               DCPOMATIC_ASSERT (false);
+       }
+
+       return AV_PIX_FMT_YUV422P10;
+}
+
 void
 FFmpegFileEncoder::setup_video ()
 {
@@ -230,7 +262,7 @@ void
 FFmpegFileEncoder::video (shared_ptr<PlayerVideo> video, DCPTime time)
 {
        shared_ptr<Image> image = video->image (
-               bind (&force_pixel_format, _1, _pixel_format),
+               bind (&PlayerVideo::force, _1, _pixel_format),
                true,
                false
                );