Switch away from the many-constructor-arguments approach to a hopefully simpler API.

[libdcp.git] / src / sound_asset.cc

diff --git a/src/sound_asset.cc b/src/sound_asset.cc
index 6e29aadfe0f259b331617ff6806648ae4a071139..ec82752c290ea6f68efb912942f4d4e654169b94 100644 (file)
--- a/src/sound_asset.cc
+++ b/src/sound_asset.cc
@@ -25,6 +25,7 @@
 #include <stdexcept>
 #include <boost/filesystem.hpp>
 #include <boost/lexical_cast.hpp>
+#include <libxml++/nodes/element.h>
 #include "KM_fileio.h"
 #include "AS_DCP.h"
 #include "sound_asset.h"
@@ -41,41 +42,22 @@ using boost::shared_ptr;
 using boost::lexical_cast;
 using namespace libdcp;
 
-SoundAsset::SoundAsset (
-       vector<string> const & files,
-       string directory,
-       string mxf_name,
-       boost::signals2::signal<void (float)>* progress,
-       int fps, int intrinsic_duration
-       )
-       : MXFAsset (directory, mxf_name, progress, fps, intrinsic_duration)
-       , _channels (files.size ())
+SoundAsset::SoundAsset (boost::filesystem::path directory, string mxf_name)
+       : MXFAsset (directory, mxf_name)
+       , _channels (0)
        , _sampling_rate (0)
 {
-       assert (_channels);
-       
-       construct (boost::bind (&SoundAsset::path_from_channel, this, _1, files));
+
 }
 
-SoundAsset::SoundAsset (
-       boost::function<string (Channel)> get_path,
-       string directory,
-       string mxf_name,
-       boost::signals2::signal<void (float)>* progress,
-       int fps, int intrinsic_duration, int channels
-       )
-       : MXFAsset (directory, mxf_name, progress, fps, intrinsic_duration)
-       , _channels (channels)
-       , _sampling_rate (0)
+void
+SoundAsset::create (vector<boost::filesystem::path> const & files)
 {
-       assert (_channels);
-       
-       construct (get_path);
+       create (boost::bind (&SoundAsset::path_from_channel, this, _1, files));
 }
 
-SoundAsset::SoundAsset (string directory, string mxf_name)
-       : MXFAsset (directory, mxf_name)
-       , _channels (0)
+void
+SoundAsset::read ()
 {
        ASDCP::PCM::MXFReader reader;
        if (ASDCP_FAILURE (reader.OpenRead (path().string().c_str()))) {
@@ -94,16 +76,8 @@ SoundAsset::SoundAsset (string directory, string mxf_name)
        _intrinsic_duration = desc.ContainerDuration;
 }
 
-SoundAsset::SoundAsset (string directory, string mxf_name, int fps, int channels, int sampling_rate)
-       : MXFAsset (directory, mxf_name, 0, fps, 0)
-       , _channels (channels)
-       , _sampling_rate (sampling_rate)
-{
-
-}
-
-string
-SoundAsset::path_from_channel (Channel channel, vector<string> const & files)
+boost::filesystem::path
+SoundAsset::path_from_channel (Channel channel, vector<boost::filesystem::path> const & files)
 {
        unsigned int const c = int (channel);
        assert (c < files.size ());
@@ -111,10 +85,11 @@ SoundAsset::path_from_channel (Channel channel, vector<string> const & files)
 }
 
 void
-SoundAsset::construct (boost::function<string (Channel)> get_path)
+SoundAsset::create (boost::function<boost::filesystem::path (Channel)> get_path)
 {
        ASDCP::Rational asdcp_edit_rate (_edit_rate, 1);
 
+       assert (_channels > 0);
        ASDCP::PCM::WAVParser pcm_parser_channel[_channels];
        if (pcm_parser_channel[0].OpenRead (get_path(LEFT).c_str(), asdcp_edit_rate)) {
                boost::throw_exception (FileError ("could not open WAV file for reading", get_path(LEFT)));
@@ -146,7 +121,7 @@ SoundAsset::construct (boost::function<string (Channel)> get_path)
 
        for (int i = 0; i < _channels; ++i) {
 
-               string const path = get_path (channels[i]);
+               boost::filesystem::path const path = get_path (channels[i]);
                
                if (ASDCP_FAILURE (pcm_parser_channel[i].OpenRead (path.c_str(), asdcp_edit_rate))) {
                        boost::throw_exception (FileError ("could not open WAV file for reading", path));
@@ -164,7 +139,7 @@ SoundAsset::construct (boost::function<string (Channel)> get_path)
        frame_buffer.Size (ASDCP::PCM::CalcFrameBufferSize (audio_desc));
 
        ASDCP::WriterInfo writer_info;
-       MXFAsset::fill_writer_info (&writer_info, _uuid);
+       MXFAsset::fill_writer_info (&writer_info, _uuid, _interop, _metadata);
 
        ASDCP::PCM::MXFWriter mxf_writer;
        if (ASDCP_FAILURE (mxf_writer.OpenWrite (path().string().c_str(), writer_info, audio_desc))) {
@@ -194,7 +169,7 @@ SoundAsset::construct (boost::function<string (Channel)> get_path)
                        offset += sample_size;
                }
 
-               if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, 0, 0))) {
+               if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, _encryption_context, 0))) {
                        boost::throw_exception (MiscError ("could not write audio MXF frame"));
                }
 
@@ -208,17 +183,10 @@ SoundAsset::construct (boost::function<string (Channel)> get_path)
        }
 }
 
-void
-SoundAsset::write_to_cpl (ostream& s) const
+string
+SoundAsset::cpl_node_name () const
 {
-       s << "        <MainSound>\n"
-         << "          <Id>urn:uuid:" << _uuid << "</Id>\n"
-         << "          <AnnotationText>" << _file_name << "</AnnotationText>\n"
-         << "          <EditRate>" << _edit_rate << " 1</EditRate>\n"
-         << "          <IntrinsicDuration>" << _intrinsic_duration << "</IntrinsicDuration>\n"
-         << "          <EntryPoint>" << _entry_point << "</EntryPoint>\n"
-         << "          <Duration>" << _duration << "</Duration>\n"
-         << "        </MainSound>\n";
+       return "MainSound";
 }
 
 bool
@@ -299,7 +267,7 @@ shared_ptr<const SoundFrame>
 SoundAsset::get_frame (int n) const
 {
        /* XXX: should add on entry point here? */
-       return shared_ptr<const SoundFrame> (new SoundFrame (path().string(), n));
+       return shared_ptr<const SoundFrame> (new SoundFrame (path().string(), n, _decryption_context));
 }
 
 shared_ptr<SoundAssetWriter>
@@ -315,6 +283,7 @@ struct SoundAssetWriter::ASDCPState
        ASDCP::PCM::FrameBuffer frame_buffer;
        ASDCP::WriterInfo writer_info;
        ASDCP::PCM::AudioDescriptor audio_desc;
+       ASDCP::AESEncContext* encryption_context;
 };
 
 SoundAssetWriter::SoundAssetWriter (SoundAsset* a)
@@ -324,6 +293,8 @@ SoundAssetWriter::SoundAssetWriter (SoundAsset* a)
        , _frames_written (0)
        , _frame_buffer_offset (0)
 {
+       _state->encryption_context = a->encryption_context ();
+       
        /* Derived from ASDCP::Wav::SimpleWaveHeader::FillADesc */
        _state->audio_desc.EditRate = ASDCP::Rational (_asset->edit_rate(), 1);
        _state->audio_desc.AudioSamplingRate = ASDCP::Rational (_asset->sampling_rate(), 1);
@@ -339,7 +310,7 @@ SoundAssetWriter::SoundAssetWriter (SoundAsset* a)
        _state->frame_buffer.Size (ASDCP::PCM::CalcFrameBufferSize (_state->audio_desc));
        memset (_state->frame_buffer.Data(), 0, _state->frame_buffer.Capacity());
        
-       MXFAsset::fill_writer_info (&_state->writer_info, _asset->uuid ());
+       _asset->fill_writer_info (&_state->writer_info, _asset->uuid (), _asset->interop(), _asset->metadata());
        
        if (ASDCP_FAILURE (_state->mxf_writer.OpenWrite (_asset->path().string().c_str(), _state->writer_info, _state->audio_desc))) {
                boost::throw_exception (FileError ("could not open audio MXF for writing", _asset->path().string()));
@@ -376,7 +347,7 @@ SoundAssetWriter::write (float const * const * data, int frames)
 void
 SoundAssetWriter::write_current_frame ()
 {
-       if (ASDCP_FAILURE (_state->mxf_writer.WriteFrame (_state->frame_buffer, 0, 0))) {
+       if (ASDCP_FAILURE (_state->mxf_writer.WriteFrame (_state->frame_buffer, _state->encryption_context, 0))) {
                boost::throw_exception (MiscError ("could not write audio MXF frame"));
        }
 
@@ -399,7 +370,8 @@ SoundAssetWriter::finalize ()
        _asset->set_duration (_frames_written);
 }
 
-SoundAssetWriter::~SoundAssetWriter ()
+string
+SoundAsset::key_type () const
 {
-       assert (_finalized);
+       return "MDAK";
 }