using namespace libdcp;
SoundAsset::SoundAsset (
- vector<string> const & files, string directory, string mxf_name, boost::signals2::signal<void (float)>* progress, int fps, int length
+ vector<string> const & files, string directory, string mxf_name, boost::signals2::signal<void (float)>* progress, int fps, int length, int start_frame
)
: MXFAsset (directory, mxf_name, progress, fps, 0, length)
, _channels (files.size ())
, _sampling_rate (0)
+ , _start_frame (start_frame)
{
+ assert (_channels);
+
construct (boost::bind (&SoundAsset::path_from_channel, this, _1, files));
}
string directory,
string mxf_name,
boost::signals2::signal<void (float)>* progress,
- int fps, int length, int channels
+ int fps, int length, int start_frame, int channels
)
: MXFAsset (directory, mxf_name, progress, fps, 0, length)
, _channels (channels)
, _sampling_rate (0)
+ , _start_frame (start_frame)
{
+ assert (_channels);
+
construct (get_path);
}
SoundAsset::SoundAsset (string directory, string mxf_name, int fps, int entry_point, int length)
: MXFAsset (directory, mxf_name, 0, fps, entry_point, length)
, _channels (0)
+ , _start_frame (0)
{
ASDCP::PCM::MXFReader reader;
if (ASDCP_FAILURE (reader.OpenRead (path().string().c_str()))) {
SoundAsset::construct (boost::function<string (Channel)> get_path)
{
ASDCP::Rational asdcp_fps (_fps, 1);
-
+
ASDCP::PCM::WAVParser pcm_parser_channel[_channels];
if (pcm_parser_channel[0].OpenRead (get_path(LEFT).c_str(), asdcp_fps)) {
throw FileError ("could not open WAV file for reading", get_path(LEFT));
throw FileError ("could not open audio MXF for writing", path().string());
}
+ /* Skip through up to our _start_frame; this is pretty inefficient... */
+ for (int i = 0; i < _start_frame; ++i) {
+ for (int j = 0; j < _channels; ++j) {
+ if (ASDCP_FAILURE (pcm_parser_channel[j].ReadFrame (frame_buffer_channel[j]))) {
+ throw MiscError ("could not read audio frame");
+ }
+ }
+ }
+
for (int i = 0; i < _length; ++i) {
for (int j = 0; j < _channels; ++j) {