diff options
| author | Carl Hetherington <cth@carlh.net> | 2013-03-31 15:09:49 +0100 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2013-03-31 15:09:49 +0100 |
| commit | 127672223cca569986e35c91265e269ed5a6561c (patch) | |
| tree | 853793c1b929d4c38ebdf5456808e466083989b7 /src/lib/sndfile_decoder.cc | |
| parent | ed78fd3d138114185e43edf81ffe91db17377da0 (diff) | |
Runs.
Diffstat (limited to 'src/lib/sndfile_decoder.cc')
| -rw-r--r-- | src/lib/sndfile_decoder.cc | 142 |
1 files changed, 20 insertions, 122 deletions
diff --git a/src/lib/sndfile_decoder.cc b/src/lib/sndfile_decoder.cc index 0e3e5e234..8848ff4f8 100644 --- a/src/lib/sndfile_decoder.cc +++ b/src/lib/sndfile_decoder.cc @@ -19,6 +19,7 @@ #include <iostream> #include <sndfile.h> +#include "sndfile_content.h" #include "sndfile_decoder.h" #include "film.h" #include "exceptions.h" @@ -33,156 +34,53 @@ using std::cout; using boost::shared_ptr; using boost::optional; -SndfileDecoder::SndfileDecoder (shared_ptr<Film> f, DecodeOptions o) +/* XXX */ + +SndfileDecoder::SndfileDecoder (shared_ptr<const Film> f, shared_ptr<SndfileContent> c, DecodeOptions o) : Decoder (f, o) - , AudioDecoder (f, o) + , AudioDecoder (f, c, o) { sf_count_t frames; - vector<SNDFILE*> sf = open_files (frames); - close_files (sf); + SNDFILE* sf = open_file (frames); + sf_close (sf); } -vector<SNDFILE*> -SndfileDecoder::open_files (sf_count_t & frames) +SNDFILE* +SndfileDecoder::open_file (sf_count_t & frames) { - vector<string> const files = _film->external_audio (); - - int N = 0; - for (size_t i = 0; i < files.size(); ++i) { - if (!files[i].empty()) { - N = i + 1; - } - } - - if (N == 0) { - return vector<SNDFILE*> (); - } - - bool first = true; frames = 0; - vector<SNDFILE*> sndfiles; - for (size_t i = 0; i < (size_t) N; ++i) { - if (files[i].empty ()) { - sndfiles.push_back (0); - } else { - SF_INFO info; - SNDFILE* s = sf_open (files[i].c_str(), SFM_READ, &info); - if (!s) { - throw DecodeError (_("could not open external audio file for reading")); - } - - if (info.channels != 1) { - throw DecodeError (_("external audio files must be mono")); - } - - sndfiles.push_back (s); - - if (first) { - shared_ptr<SndfileStream> st ( - new SndfileStream ( - info.samplerate, av_get_default_channel_layout (N) - ) - ); - - _audio_streams.push_back (st); - _audio_stream = st; - frames = info.frames; - first = false; - } else { - if (info.frames != frames) { - throw DecodeError (_("external audio files have differing lengths")); - } - } - } + SF_INFO info; + SNDFILE* s = sf_open (_sndfile_content->file().string().c_str(), SFM_READ, &info); + if (!s) { + throw DecodeError (_("could not open external audio file for reading")); } - return sndfiles; + frames = info.frames; + return s; } bool SndfileDecoder::pass () { sf_count_t frames; - vector<SNDFILE*> sndfiles = open_files (frames); - if (sndfiles.empty()) { - return true; - } + SNDFILE* sndfile = open_file (frames); /* Do things in half second blocks as I think there may be limits to what FFmpeg (and in particular the resampler) can cope with. */ - sf_count_t const block = _audio_stream->sample_rate() / 2; + sf_count_t const block = _sndfile_content->audio_frame_rate() / 2; - shared_ptr<AudioBuffers> audio (new AudioBuffers (_audio_stream->channels(), block)); + shared_ptr<AudioBuffers> audio (new AudioBuffers (_sndfile_content->audio_channels(), block)); while (frames > 0) { sf_count_t const this_time = min (block, frames); - for (size_t i = 0; i < sndfiles.size(); ++i) { - if (!sndfiles[i]) { - audio->make_silent (i); - } else { - sf_read_float (sndfiles[i], audio->data(i), block); - } - } - + sf_read_float (sndfile, audio->data(0), this_time); audio->set_frames (this_time); Audio (audio); frames -= this_time; } - close_files (sndfiles); + sf_close (sndfile); return true; } - -void -SndfileDecoder::close_files (vector<SNDFILE*> const & sndfiles) -{ - for (size_t i = 0; i < sndfiles.size(); ++i) { - sf_close (sndfiles[i]); - } -} - -shared_ptr<SndfileStream> -SndfileStream::create () -{ - return shared_ptr<SndfileStream> (new SndfileStream); -} - -shared_ptr<SndfileStream> -SndfileStream::create (string t, optional<int> v) -{ - if (!v) { - /* version < 1; no type in the string, and there's only FFmpeg streams anyway */ - return shared_ptr<SndfileStream> (); - } - - stringstream s (t); - string type; - s >> type; - if (type != N_("external")) { - return shared_ptr<SndfileStream> (); - } - - return shared_ptr<SndfileStream> (new SndfileStream (t, v)); -} - -SndfileStream::SndfileStream (string t, optional<int> v) -{ - assert (v); - - stringstream s (t); - string type; - s >> type >> _sample_rate >> _channel_layout; -} - -SndfileStream::SndfileStream () -{ - -} - -string -SndfileStream::to_string () const -{ - return String::compose (N_("external %1 %2"), _sample_rate, _channel_layout); -} |
