#include <iostream>
#include <sndfile.h>
+#include "sndfile_content.h"
#include "sndfile_decoder.h"
#include "film.h"
#include "exceptions.h"
+#include "audio_buffers.h"
#include "i18n.h"
using std::vector;
using std::string;
-using std::stringstream;
using std::min;
using std::cout;
using boost::shared_ptr;
-using boost::optional;
-SndfileDecoder::SndfileDecoder (shared_ptr<Film> f, DecodeOptions o)
- : Decoder (f, o)
- , AudioDecoder (f, o)
- , _done (0)
- , _frames (0)
+SndfileDecoder::SndfileDecoder (shared_ptr<const Film> f, shared_ptr<const SndfileContent> c)
+ : Decoder (f)
+ , AudioDecoder (f, c)
+ , _sndfile_content (c)
+ , _deinterleave_buffer (0)
{
- _done = 0;
- _frames = 0;
-
- 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;
+ _sndfile = sf_open (_sndfile_content->file().string().c_str(), SFM_READ, &_info);
+ if (!_sndfile) {
+ throw DecodeError (_("could not open audio file for reading"));
}
- bool first = true;
-
- 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"));
- }
+ _done = 0;
+ _remaining = _info.frames;
+}
- 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"));
- }
- }
- }
- }
+SndfileDecoder::~SndfileDecoder ()
+{
+ sf_close (_sndfile);
+ delete[] _deinterleave_buffer;
}
-bool
+void
SndfileDecoder::pass ()
{
- if (_audio_streams.empty ()) {
- return true;
- }
-
/* 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;
- shared_ptr<AudioBuffers> audio (new AudioBuffers (_audio_stream->channels(), block));
- sf_count_t const this_time = min (block, _frames - _done);
- 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), this_time);
- }
- }
+ sf_count_t const block = _sndfile_content->content_audio_frame_rate() / 2;
+ sf_count_t const this_time = min (block, _remaining);
- audio->set_frames (this_time);
- Audio (audio, double(_done) / _audio_stream->sample_rate());
- _done += this_time;
-
- return (_done == _frames);
-}
-
-SndfileDecoder::~SndfileDecoder ()
-{
- for (size_t i = 0; i < _sndfiles.size(); ++i) {
- if (_sndfiles[i]) {
- sf_close (_sndfiles[i]);
+ int const channels = _sndfile_content->audio_channels ();
+
+ shared_ptr<AudioBuffers> data (new AudioBuffers (channels, this_time));
+
+ if (_sndfile_content->audio_channels() == 1) {
+ /* No de-interleaving required */
+ sf_read_float (_sndfile, data->data(0), this_time);
+ } else {
+ /* Deinterleave */
+ if (!_deinterleave_buffer) {
+ _deinterleave_buffer = new float[block * channels];
+ }
+ sf_readf_float (_sndfile, _deinterleave_buffer, this_time);
+ vector<float*> out_ptr (channels);
+ for (int i = 0; i < channels; ++i) {
+ out_ptr[i] = data->data(i);
+ }
+ float* in_ptr = _deinterleave_buffer;
+ for (int i = 0; i < this_time; ++i) {
+ for (int j = 0; j < channels; ++j) {
+ *out_ptr[j]++ = *in_ptr++;
+ }
}
}
+
+ data->set_frames (this_time);
+ audio (data, double(_done) / audio_frame_rate());
+ _done += this_time;
+ _remaining -= this_time;
}
-shared_ptr<SndfileStream>
-SndfileStream::create ()
-{
- return shared_ptr<SndfileStream> (new SndfileStream);
-}
-
-shared_ptr<SndfileStream>
-SndfileStream::create (string t, optional<int> v)
+int
+SndfileDecoder::audio_channels () const
{
- 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));
+ return _info.channels;
}
-SndfileStream::SndfileStream (string t, optional<int> v)
+ContentAudioFrame
+SndfileDecoder::audio_length () const
{
- assert (v);
-
- stringstream s (t);
- string type;
- s >> type >> _sample_rate >> _channel_layout;
+ return _info.frames;
}
-SndfileStream::SndfileStream ()
+int
+SndfileDecoder::audio_frame_rate () const
{
-
+ return _info.samplerate;
}
-string
-SndfileStream::to_string () const
+Time
+SndfileDecoder::next () const
{
- return String::compose (N_("external %1 %2"), _sample_rate, _channel_layout);
+ return _next_audio;
}
projects / dcpomatic.git / blobdiff