Tim Mayberry
ee29fcacfb
git-svn-id: svn://localhost/ardour2/trunk@1997 d708f5d6-7413-0410-9779-e7cbd77b26cf
387 lines
9.5 KiB
C++
387 lines
9.5 KiB
C++
/*
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Copyright (C) 2000 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <cstdio>
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#include <cstdlib>
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#include <string>
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#include <climits>
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#include <cerrno>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <time.h>
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#include <sndfile.h>
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#include <samplerate.h>
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#include <glibmm.h>
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#include <pbd/basename.h>
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#include <ardour/ardour.h>
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#include <ardour/types.h>
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#include <ardour/session.h>
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#include <ardour/session_directory.h>
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#include <ardour/audio_diskstream.h>
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#include <ardour/sndfilesource.h>
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#include <ardour/sndfile_helpers.h>
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#include <ardour/audioregion.h>
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#include <ardour/region_factory.h>
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#include <ardour/source_factory.h>
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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#define BLOCKSIZE 4096U
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class ImportableSource {
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public:
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ImportableSource (SNDFILE* sf, SF_INFO* info) : in (sf), sf_info (info) {}
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virtual ~ImportableSource() {}
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virtual nframes_t read (Sample* buffer, nframes_t nframes) {
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nframes_t per_channel = nframes / sf_info->channels;
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per_channel = sf_readf_float (in, buffer, per_channel);
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return per_channel * sf_info->channels;
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}
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virtual float ratio() const { return 1.0f; }
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protected:
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SNDFILE* in;
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SF_INFO* sf_info;
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};
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class ResampledImportableSource : public ImportableSource {
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public:
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ResampledImportableSource (SNDFILE* sf, SF_INFO* info, nframes_t rate) : ImportableSource (sf, info) {
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int err;
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sf_seek (in, 0, SEEK_SET) ;
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/* Initialize the sample rate converter. */
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if ((src_state = src_new (SRC_SINC_BEST_QUALITY, sf_info->channels, &err)) == 0) {
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error << string_compose(_("Import: src_new() failed : %1"), src_strerror (err)) << endmsg ;
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throw failed_constructor ();
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}
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src_data.end_of_input = 0 ; /* Set this later. */
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/* Start with zero to force load in while loop. */
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src_data.input_frames = 0 ;
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src_data.data_in = input ;
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src_data.src_ratio = ((float) rate) / sf_info->samplerate ;
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}
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~ResampledImportableSource () {
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src_state = src_delete (src_state) ;
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}
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nframes_t read (Sample* buffer, nframes_t nframes);
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float ratio() const { return src_data.src_ratio; }
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private:
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float input[BLOCKSIZE];
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SRC_STATE* src_state;
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SRC_DATA src_data;
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};
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int
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Session::import_audiofile (import_status& status)
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{
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SNDFILE *in;
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vector<boost::shared_ptr<AudioFileSource> > newfiles;
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SourceList sources;
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SF_INFO info;
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float *data = 0;
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Sample **channel_data = 0;
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long nfiles = 0;
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string basepath;
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string sounds_dir;
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nframes_t so_far;
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char buf[PATH_MAX+1];
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int ret = -1;
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vector<string> new_paths;
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struct tm* now;
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ImportableSource* importable = 0;
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const nframes_t nframes = BLOCKSIZE;
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status.new_regions.clear ();
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if ((in = sf_open (status.paths.front().c_str(), SFM_READ, &info)) == 0) {
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error << string_compose(_("Import: cannot open input sound file \"%1\""), status.paths.front()) << endmsg;
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status.done = 1;
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status.cancel = 1;
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return -1;
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}
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if ((nframes_t) info.samplerate != frame_rate()) {
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importable = new ResampledImportableSource (in, &info, frame_rate());
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} else {
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importable = new ImportableSource (in, &info);
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}
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for (int n = 0; n < info.channels; ++n) {
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newfiles.push_back (boost::shared_ptr<AudioFileSource>());
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}
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SessionDirectory sdir(get_best_session_directory_for_new_source ());
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sounds_dir = sdir.sound_path().to_string();
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basepath = PBD::basename_nosuffix (status.paths.front());
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for (int n = 0; n < info.channels; ++n) {
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bool goodfile = false;
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do {
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if (info.channels == 2) {
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if (n == 0) {
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snprintf (buf, sizeof(buf), "%s/%s-L.wav", sounds_dir.c_str(), basepath.c_str());
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} else {
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snprintf (buf, sizeof(buf), "%s/%s-R.wav", sounds_dir.c_str(), basepath.c_str());
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}
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} else if (info.channels > 1) {
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snprintf (buf, sizeof(buf), "%s/%s-c%d.wav", sounds_dir.c_str(), basepath.c_str(), n+1);
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} else {
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snprintf (buf, sizeof(buf), "%s/%s.wav", sounds_dir.c_str(), basepath.c_str());
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}
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if (Glib::file_test (buf, Glib::FILE_TEST_EXISTS)) {
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/* if the file already exists, we must come up with
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* a new name for it. for now we just keep appending
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* _ to basepath
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*/
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basepath += "_";
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} else {
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goodfile = true;
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}
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} while ( !goodfile);
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try {
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newfiles[n] = boost::dynamic_pointer_cast<AudioFileSource> (
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SourceFactory::createWritable (DataType::AUDIO, *this, buf, false, frame_rate()));
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}
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catch (failed_constructor& err) {
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error << string_compose(_("Session::import_audiofile: cannot open new file source for channel %1"), n+1) << endmsg;
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goto out;
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}
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new_paths.push_back (buf);
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nfiles++;
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}
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data = new float[nframes * info.channels];
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channel_data = new Sample * [ info.channels ];
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for (int n = 0; n < info.channels; ++n) {
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channel_data[n] = new Sample[nframes];
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}
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so_far = 0;
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status.doing_what = _("converting audio");
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status.progress = 0.0;
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while (!status.cancel) {
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nframes_t nread, nfread;
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long x;
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long chn;
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if ((nread = importable->read (data, nframes)) == 0) {
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break;
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}
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nfread = nread / info.channels;
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/* de-interleave */
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for (chn = 0; chn < info.channels; ++chn) {
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nframes_t n;
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for (x = chn, n = 0; n < nfread; x += info.channels, ++n) {
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channel_data[chn][n] = (Sample) data[x];
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}
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}
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/* flush to disk */
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for (chn = 0; chn < info.channels; ++chn) {
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newfiles[chn]->write (channel_data[chn], nfread);
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}
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so_far += nread;
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status.progress = so_far / (importable->ratio () * info.frames * info.channels);
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}
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if (status.cancel) {
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goto out;
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}
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if (status.multichan) {
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status.doing_what = _("building region");
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} else {
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status.doing_what = _("building regions");
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}
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status.freeze = true;
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time_t xnow;
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time (&xnow);
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now = localtime (&xnow);
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if (status.multichan) {
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/* all sources are used in a single multichannel region */
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for (int n = 0; n < nfiles && !status.cancel; ++n) {
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/* flush the final length to the header */
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newfiles[n]->update_header(0, *now, xnow);
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sources.push_back(newfiles[n]);
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}
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bool strip_paired_suffixes = (newfiles.size() > 1);
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boost::shared_ptr<AudioRegion> r (boost::dynamic_pointer_cast<AudioRegion>
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(RegionFactory::create (sources, 0,
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newfiles[0]->length(),
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region_name_from_path (basepath, strip_paired_suffixes),
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0, AudioRegion::Flag (AudioRegion::DefaultFlags | AudioRegion::WholeFile))));
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status.new_regions.push_back (r);
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} else {
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for (int n = 0; n < nfiles && !status.cancel; ++n) {
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/* flush the final length to the header */
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newfiles[n]->update_header(0, *now, xnow);
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/* The sources had zero-length when created, which means that the Session
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did not bother to create whole-file AudioRegions for them. Do it now.
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Note: leave any trailing paired indicators from the file names as part
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of the region name.
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*/
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status.new_regions.push_back (boost::dynamic_pointer_cast<AudioRegion>
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(RegionFactory::create (boost::static_pointer_cast<Source> (newfiles[n]), 0, newfiles[n]->length(),
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region_name_from_path (newfiles[n]->name(), false),
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0, AudioRegion::Flag (AudioRegion::DefaultFlags | AudioRegion::WholeFile | AudioRegion::Import))));
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}
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}
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/* save state so that we don't lose these new Sources */
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if (!status.cancel) {
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save_state (_name);
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}
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ret = 0;
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out:
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if (data) {
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delete [] data;
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}
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if (channel_data) {
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for (int n = 0; n < info.channels; ++n) {
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delete [] channel_data[n];
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}
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delete [] channel_data;
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}
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if (status.cancel) {
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status.new_regions.clear ();
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for (vector<string>::iterator i = new_paths.begin(); i != new_paths.end(); ++i) {
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unlink ((*i).c_str());
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}
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}
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if (importable) {
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delete importable;
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}
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sf_close (in);
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status.done = true;
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return ret;
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}
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nframes_t
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ResampledImportableSource::read (Sample* output, nframes_t nframes)
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{
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int err;
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/* If the input buffer is empty, refill it. */
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if (src_data.input_frames == 0) {
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src_data.input_frames = ImportableSource::read (input, BLOCKSIZE);
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/* The last read will not be a full buffer, so set end_of_input. */
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if ((nframes_t) src_data.input_frames < BLOCKSIZE) {
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src_data.end_of_input = SF_TRUE ;
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}
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src_data.input_frames /= sf_info->channels;
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src_data.data_in = input ;
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}
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src_data.data_out = output;
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if (!src_data.end_of_input) {
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src_data.output_frames = nframes / sf_info->channels ;
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} else {
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src_data.output_frames = src_data.input_frames;
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}
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if ((err = src_process (src_state, &src_data))) {
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error << string_compose(_("Import: %1"), src_strerror (err)) << endmsg ;
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return 0 ;
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}
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/* Terminate if at end */
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if (src_data.end_of_input && src_data.output_frames_gen == 0) {
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return 0;
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}
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src_data.data_in += src_data.input_frames_used * sf_info->channels ;
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src_data.input_frames -= src_data.input_frames_used ;
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return src_data.output_frames_gen * sf_info->channels;
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}
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