/*
- Copyright (C) 2006 Paul Davis
+ Copyright (C) 2006 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
-#include <ardour/sndfilesource.h>
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
+#include <cstring>
+#include <cerrno>
+#include <climits>
+#include <cstdarg>
+
+#include <pwd.h>
+#include <sys/utsname.h>
+#include <sys/stat.h>
+
+#include <glibmm/miscutils.h>
+
+#include "ardour/sndfilesource.h"
+#include "ardour/sndfile_helpers.h"
+#include "ardour/utils.h"
+#include "ardour/session.h"
#include "i18n.h"
+using namespace std;
using namespace ARDOUR;
+using namespace PBD;
+using std::string;
+
+gain_t* SndFileSource::out_coefficient = 0;
+gain_t* SndFileSource::in_coefficient = 0;
+framecnt_t SndFileSource::xfade_frames = 64;
+const Source::Flag SndFileSource::default_writable_flags = Source::Flag (
+ Source::Writable |
+ Source::Removable |
+ Source::RemovableIfEmpty |
+ Source::CanRename );
-SndFileSource::SndFileSource (const XMLNode& node)
- : ExternalSource (node)
+SndFileSource::SndFileSource (Session& s, const XMLNode& node)
+ : Source(s, node)
+ , AudioFileSource (s, node)
{
- init (_name, true);
- SourceCreated (this); /* EMIT SIGNAL */
+ init_sndfile ();
+
+ if (open()) {
+ throw failed_constructor ();
+ }
}
-SndFileSource::SndFileSource (const string& idstr, bool build_peak)
- : ExternalSource(idstr, build_peak)
+/** Files created this way are never writable or removable */
+SndFileSource::SndFileSource (Session& s, const string& path, int chn, Flag flags)
+ : Source(s, DataType::AUDIO, path, flags)
+ /* note that the origin of an external file is itself */
+ , AudioFileSource (s, path, Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
{
- init (idstr, build_peak);
+ _channel = chn;
+
+ init_sndfile ();
- if (build_peak) {
- SourceCreated (this); /* EMIT SIGNAL */
+ if (open()) {
+ throw failed_constructor ();
}
}
-void
-SndFileSource::init (const string& idstr, bool build_peak)
+/** This constructor is used to construct new files, not open existing ones. */
+SndFileSource::SndFileSource (Session& s, const string& path, const string& origin,
+ SampleFormat sfmt, HeaderFormat hf, framecnt_t rate, Flag flags)
+ : Source(s, DataType::AUDIO, path, flags)
+ , AudioFileSource (s, path, origin, flags, sfmt, hf)
{
- string::size_type pos;
- string file;
+ int fmt = 0;
+
+ init_sndfile ();
+
+ _file_is_new = true;
- tmpbuf = 0;
- tmpbufsize = 0;
- sf = 0;
+ switch (hf) {
+ case CAF:
+ fmt = SF_FORMAT_CAF;
+ _flags = Flag (_flags & ~Broadcast);
+ break;
- _name = idstr;
+ case AIFF:
+ fmt = SF_FORMAT_AIFF;
+ _flags = Flag (_flags & ~Broadcast);
+ break;
+
+ case BWF:
+ fmt = SF_FORMAT_WAV;
+ _flags = Flag (_flags | Broadcast);
+ break;
+
+ case WAVE:
+ fmt = SF_FORMAT_WAV;
+ _flags = Flag (_flags & ~Broadcast);
+ break;
+
+ case WAVE64:
+ fmt = SF_FORMAT_W64;
+ _flags = Flag (_flags & ~Broadcast);
+ break;
+
+ default:
+ fatal << string_compose (_("programming error: %1"), X_("unsupported audio header format requested")) << endmsg;
+ /*NOTREACHED*/
+ break;
+
+ }
+
+ switch (sfmt) {
+ case FormatFloat:
+ fmt |= SF_FORMAT_FLOAT;
+ break;
+
+ case FormatInt24:
+ fmt |= SF_FORMAT_PCM_24;
+ break;
+
+ case FormatInt16:
+ fmt |= SF_FORMAT_PCM_16;
+ break;
+ }
- if ((pos = idstr.find_last_of (':')) == string::npos) {
- channel = 0;
- file = idstr;
+ _info.channels = 1;
+ _info.samplerate = rate;
+ _info.format = fmt;
+
+ if (_flags & Destructive) {
+ if (open()) {
+ throw failed_constructor();
+ }
} else {
- channel = atoi (idstr.substr (pos+1).c_str());
- file = idstr.substr (0, pos);
+ /* normal mode: do not open the file here - do that in write_unlocked() as needed
+ */
}
+}
+
+void
+SndFileSource::init_sndfile ()
+{
+ string file;
+
+ _descriptor = 0;
+
+ // lets try to keep the object initalizations here at the top
+ xfade_buf = 0;
+ _broadcast_info = 0;
/* although libsndfile says we don't need to set this,
valgrind and source code shows us that we do.
memset (&_info, 0, sizeof(_info));
- /* note that we temporarily truncated _id at the colon */
-
- if ((sf = sf_open (file.c_str(), SFM_READ, &_info)) == 0) {
+ _capture_start = false;
+ _capture_end = false;
+ file_pos = 0;
+
+ if (destructive()) {
+ xfade_buf = new Sample[xfade_frames];
+ _timeline_position = header_position_offset;
+ }
+
+ AudioFileSource::HeaderPositionOffsetChanged.connect_same_thread (header_position_connection, boost::bind (&SndFileSource::handle_header_position_change, this));
+}
+
+int
+SndFileSource::open ()
+{
+ _descriptor = new SndFileDescriptor (_path, writable(), &_info);
+ _descriptor->Closed.connect_same_thread (file_manager_connection, boost::bind (&SndFileSource::file_closed, this));
+ SNDFILE* sf = _descriptor->allocate ();
+
+ if (sf == 0) {
char errbuf[256];
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
- error << string_compose(_("SndFileSource: cannot open file \"%1\" (%2)"), file, errbuf) << endmsg;
- throw failed_constructor();
+#ifndef HAVE_COREAUDIO
+ /* if we have CoreAudio, we will be falling back to that if libsndfile fails,
+ so we don't want to see this message.
+ */
+
+ cerr << "failed to open " << _path << " with name " << _name << endl;
+
+ error << string_compose(_("SndFileSource: cannot open file \"%1\" for %2 (%3)"),
+ _path, (writable() ? "read+write" : "reading"), errbuf) << endmsg;
+#endif
+ return -1;
}
- if (channel >= _info.channels) {
- error << string_compose(_("SndFileSource: file only contains %1 channels; %2 is invalid as a channel number"), _info.channels, channel) << endmsg;
- sf_close (sf);
- sf = 0;
- throw failed_constructor();
+ if (_channel >= _info.channels) {
+#ifndef HAVE_COREAUDIO
+ error << string_compose(_("SndFileSource: file only contains %1 channels; %2 is invalid as a channel number"), _info.channels, _channel) << endmsg;
+#endif
+ delete _descriptor;
+ _descriptor = 0;
+ return -1;
}
_length = _info.frames;
- _path = file;
- if (build_peak) {
- if (initialize_peakfile (false, file)) {
- sf_close (sf);
- sf = 0;
- throw failed_constructor ();
- }
+ if (!_broadcast_info) {
+ _broadcast_info = new BroadcastInfo;
}
+
+ bool bwf_info_exists = _broadcast_info->load_from_file (sf);
+
+ /* Set our timeline position to either the time reference from a BWF header or the current
+ start of the session.
+ */
+ set_timeline_position (bwf_info_exists ? _broadcast_info->get_time_reference() : header_position_offset);
+
+ if (_length != 0 && !bwf_info_exists) {
+ delete _broadcast_info;
+ _broadcast_info = 0;
+ _flags = Flag (_flags & ~Broadcast);
+ }
+
+ if (writable()) {
+ sf_command (sf, SFC_SET_UPDATE_HEADER_AUTO, 0, SF_FALSE);
+
+ if (_flags & Broadcast) {
+
+ if (!_broadcast_info) {
+ _broadcast_info = new BroadcastInfo;
+ }
+
+ _broadcast_info->set_from_session (_session, header_position_offset);
+ _broadcast_info->set_description (string_compose ("BWF %1", _name));
+
+ if (!_broadcast_info->write_to_file (sf)) {
+ error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
+ _path, _broadcast_info->get_error())
+ << endmsg;
+ _flags = Flag (_flags & ~Broadcast);
+ delete _broadcast_info;
+ _broadcast_info = 0;
+ }
+ }
+ }
+
+ _descriptor->release ();
+ _open = true;
+ return 0;
}
SndFileSource::~SndFileSource ()
+{
+ delete _descriptor;
+ delete _broadcast_info;
+ delete [] xfade_buf;
+}
+
+float
+SndFileSource::sample_rate () const
+{
+ return _info.samplerate;
+}
+framecnt_t
+SndFileSource::read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const
{
- GoingAway (this); /* EMIT SIGNAL */
+ assert (cnt >= 0);
+
+ int32_t nread;
+ float *ptr;
+ uint32_t real_cnt;
+ framepos_t file_cnt;
+
+ if (writable() && !_open) {
+ /* file has not been opened yet - nothing written to it */
+ memset (dst, 0, sizeof (Sample) * cnt);
+ return cnt;
+ }
- if (sf) {
- sf_close (sf);
+ SNDFILE* sf = _descriptor->allocate ();
+
+ if (sf == 0) {
+ error << string_compose (_("could not allocate file %1 for reading."), _path) << endmsg;
+ return 0;
+ }
+
+ if (start > _length) {
+
+ /* read starts beyond end of data, just memset to zero */
+
+ file_cnt = 0;
+
+ } else if (start + cnt > _length) {
+
+ /* read ends beyond end of data, read some, memset the rest */
+
+ file_cnt = _length - start;
+
+ } else {
+
+ /* read is entirely within data */
+
+ file_cnt = cnt;
}
- if (tmpbuf) {
- delete [] tmpbuf;
+ assert (file_cnt >= 0);
+
+ if (file_cnt != cnt) {
+ framepos_t delta = cnt - file_cnt;
+ memset (dst+file_cnt, 0, sizeof (Sample) * delta);
}
+
+ if (file_cnt) {
+
+ if (sf_seek (sf, (sf_count_t) start, SEEK_SET|SFM_READ) != (sf_count_t) start) {
+ char errbuf[256];
+ sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+ error << string_compose(_("SndFileSource: could not seek to frame %1 within %2 (%3)"), start, _name.val().substr (1), errbuf) << endmsg;
+ _descriptor->release ();
+ return 0;
+ }
+
+ if (_info.channels == 1) {
+ framecnt_t ret = sf_read_float (sf, dst, file_cnt);
+ if (ret != file_cnt) {
+ char errbuf[256];
+ sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+ error << string_compose(_("SndFileSource: @ %1 could not read %2 within %3 (%4) (len = %5, ret was %6)"), start, file_cnt, _name.val().substr (1), errbuf, _length, ret) << endl;
+ }
+ _descriptor->release ();
+ return ret;
+ }
+ }
+
+ real_cnt = cnt * _info.channels;
+
+ Sample* interleave_buf = get_interleave_buffer (real_cnt);
+
+ nread = sf_read_float (sf, interleave_buf, real_cnt);
+ ptr = interleave_buf + _channel;
+ nread /= _info.channels;
+
+ /* stride through the interleaved data */
+
+ for (int32_t n = 0; n < nread; ++n) {
+ dst[n] = *ptr;
+ ptr += _info.channels;
+ }
+
+ _descriptor->release ();
+ return nread;
}
-jack_nframes_t
-SndFileSource::read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const
+framecnt_t
+SndFileSource::write_unlocked (Sample *data, framecnt_t cnt)
{
- int32_t nread;
- float *ptr;
- uint32_t real_cnt;
+ if (!_open && open()) {
+ return 0; // failure
+ }
+
+ if (destructive()) {
+ return destructive_write_unlocked (data, cnt);
+ } else {
+ return nondestructive_write_unlocked (data, cnt);
+ }
+}
+
+framecnt_t
+SndFileSource::nondestructive_write_unlocked (Sample *data, framecnt_t cnt)
+{
+ if (!writable()) {
+ warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
+ return 0;
+ }
+
+ if (_info.channels != 1) {
+ fatal << string_compose (_("programming error: %1 %2"), X_("SndFileSource::write called on non-mono file"), _path) << endmsg;
+ /*NOTREACHED*/
+ return 0;
+ }
+
+ int32_t frame_pos = _length;
+
+ if (write_float (data, frame_pos, cnt) != cnt) {
+ return 0;
+ }
+
+ update_length (_length + cnt);
+
+ if (_build_peakfiles) {
+ compute_and_write_peaks (data, frame_pos, cnt, false, true);
+ }
+
+ return cnt;
+}
+
+framecnt_t
+SndFileSource::destructive_write_unlocked (Sample* data, framecnt_t cnt)
+{
+ if (!writable()) {
+ warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
+ return 0;
+ }
+
+ if (_capture_start && _capture_end) {
+
+ /* start and end of capture both occur within the data we are writing,
+ so do both crossfades.
+ */
+
+ _capture_start = false;
+ _capture_end = false;
- if (sf_seek (sf, (off_t) start, SEEK_SET) < 0) {
+ /* move to the correct location place */
+ file_pos = capture_start_frame - _timeline_position;
+
+ // split cnt in half
+ framecnt_t subcnt = cnt / 2;
+ framecnt_t ofilepos = file_pos;
+
+ // fade in
+ if (crossfade (data, subcnt, 1) != subcnt) {
+ return 0;
+ }
+
+ file_pos += subcnt;
+ Sample * tmpdata = data + subcnt;
+
+ // fade out
+ subcnt = cnt - subcnt;
+ if (crossfade (tmpdata, subcnt, 0) != subcnt) {
+ return 0;
+ }
+
+ file_pos = ofilepos; // adjusted below
+
+ } else if (_capture_start) {
+
+ /* start of capture both occur within the data we are writing,
+ so do the fade in
+ */
+
+ _capture_start = false;
+ _capture_end = false;
+
+ /* move to the correct location place */
+ file_pos = capture_start_frame - _timeline_position;
+
+ if (crossfade (data, cnt, 1) != cnt) {
+ return 0;
+ }
+
+ } else if (_capture_end) {
+
+ /* end of capture both occur within the data we are writing,
+ so do the fade out
+ */
+
+ _capture_start = false;
+ _capture_end = false;
+
+ if (crossfade (data, cnt, 0) != cnt) {
+ return 0;
+ }
+
+ } else {
+
+ /* in the middle of recording */
+
+ if (write_float (data, file_pos, cnt) != cnt) {
+ return 0;
+ }
+ }
+
+ update_length (file_pos + cnt);
+
+ if (_build_peakfiles) {
+ compute_and_write_peaks (data, file_pos, cnt, false, true);
+ }
+
+ file_pos += cnt;
+
+ return cnt;
+}
+
+int
+SndFileSource::update_header (framepos_t when, struct tm& now, time_t tnow)
+{
+ set_timeline_position (when);
+
+ if (_flags & Broadcast) {
+ if (setup_broadcast_info (when, now, tnow)) {
+ return -1;
+ }
+ }
+
+ return flush_header ();
+}
+
+int
+SndFileSource::flush_header ()
+{
+ if (!writable()) {
+ warning << string_compose (_("attempt to flush a non-writable audio file source (%1)"), _path) << endmsg;
+ return -1;
+ }
+
+ if (!_open) {
+ warning << string_compose (_("attempt to flush an un-opened audio file source (%1)"), _path) << endmsg;
+ return -1;
+ }
+
+ SNDFILE* sf = _descriptor->allocate ();
+ if (sf == 0) {
+ error << string_compose (_("could not allocate file %1 to write header"), _path) << endmsg;
+ return -1;
+ }
+
+ int const r = sf_command (sf, SFC_UPDATE_HEADER_NOW, 0, 0) != SF_TRUE;
+ _descriptor->release ();
+
+ return r;
+}
+
+int
+SndFileSource::setup_broadcast_info (framepos_t /*when*/, struct tm& now, time_t /*tnow*/)
+{
+ if (!writable()) {
+ warning << string_compose (_("attempt to store broadcast info in a non-writable audio file source (%1)"), _path) << endmsg;
+ return -1;
+ }
+
+ if (!_open) {
+ warning << string_compose (_("attempt to set BWF info for an un-opened audio file source (%1)"), _path) << endmsg;
+ return -1;
+ }
+
+ if (!(_flags & Broadcast)) {
+ return 0;
+ }
+
+ _broadcast_info->set_originator_ref_from_session (_session);
+ _broadcast_info->set_origination_time (&now);
+
+ /* now update header position taking header offset into account */
+
+ set_header_timeline_position ();
+
+ SNDFILE* sf = _descriptor->allocate ();
+
+ if (sf == 0 || !_broadcast_info->write_to_file (sf)) {
+ error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
+ _path, _broadcast_info->get_error())
+ << endmsg;
+ _flags = Flag (_flags & ~Broadcast);
+ delete _broadcast_info;
+ _broadcast_info = 0;
+ }
+
+ _descriptor->release ();
+ return 0;
+}
+
+void
+SndFileSource::set_header_timeline_position ()
+{
+ if (!(_flags & Broadcast)) {
+ return;
+ }
+
+ _broadcast_info->set_time_reference (_timeline_position);
+
+ SNDFILE* sf = _descriptor->allocate ();
+
+ if (sf == 0 || !_broadcast_info->write_to_file (sf)) {
+ error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
+ _path, _broadcast_info->get_error())
+ << endmsg;
+ _flags = Flag (_flags & ~Broadcast);
+ delete _broadcast_info;
+ _broadcast_info = 0;
+ }
+
+ _descriptor->release ();
+}
+
+framecnt_t
+SndFileSource::write_float (Sample* data, framepos_t frame_pos, framecnt_t cnt)
+{
+ SNDFILE* sf = _descriptor->allocate ();
+
+ if (sf == 0 || sf_seek (sf, frame_pos, SEEK_SET|SFM_WRITE) < 0) {
char errbuf[256];
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
- error << string_compose(_("SndFileSource: could not seek to frame %1 within %2 (%3)"), start, _name.substr (1), errbuf) << endmsg;
+ error << string_compose (_("%1: cannot seek to %2 (libsndfile error: %3"), _path, frame_pos, errbuf) << endmsg;
+ _descriptor->release ();
return 0;
}
- if (_info.channels == 1) {
- jack_nframes_t ret = sf_read_float (sf, dst, cnt);
- _read_data_count = cnt * sizeof(float);
- return ret;
+ if (sf_writef_float (sf, data, cnt) != (ssize_t) cnt) {
+ _descriptor->release ();
+ return 0;
}
- real_cnt = cnt * _info.channels;
+ _descriptor->release ();
+ return cnt;
+}
+
+framepos_t
+SndFileSource::natural_position() const
+{
+ return _timeline_position;
+}
+
+bool
+SndFileSource::set_destructive (bool yn)
+{
+ if (yn) {
+ _flags = Flag (_flags | Writable | Destructive);
+ if (!xfade_buf) {
+ xfade_buf = new Sample[xfade_frames];
+ }
+ clear_capture_marks ();
+ _timeline_position = header_position_offset;
+ } else {
+ _flags = Flag (_flags & ~Destructive);
+ _timeline_position = 0;
+ /* leave xfade buf alone in case we need it again later */
+ }
+
+ return true;
+}
+
+void
+SndFileSource::clear_capture_marks ()
+{
+ _capture_start = false;
+ _capture_end = false;
+}
+
+/** @param pos Capture start position in session frames */
+void
+SndFileSource::mark_capture_start (framepos_t pos)
+{
+ if (destructive()) {
+ if (pos < _timeline_position) {
+ _capture_start = false;
+ } else {
+ _capture_start = true;
+ capture_start_frame = pos;
+ }
+ }
+}
+
+void
+SndFileSource::mark_capture_end()
+{
+ if (destructive()) {
+ _capture_end = true;
+ }
+}
+
+framecnt_t
+SndFileSource::crossfade (Sample* data, framecnt_t cnt, int fade_in)
+{
+ framecnt_t xfade = min (xfade_frames, cnt);
+ framecnt_t nofade = cnt - xfade;
+ Sample* fade_data = 0;
+ framepos_t fade_position = 0; // in frames
+ ssize_t retval;
+ framecnt_t file_cnt;
- {
- LockMonitor lm (_tmpbuf_lock, __LINE__, __FILE__);
-
- if (tmpbufsize < real_cnt) {
-
- if (tmpbuf) {
- delete [] tmpbuf;
+ if (fade_in) {
+ fade_position = file_pos;
+ fade_data = data;
+ } else {
+ fade_position = file_pos + nofade;
+ fade_data = data + nofade;
+ }
+
+ if (fade_position > _length) {
+
+ /* read starts beyond end of data, just memset to zero */
+
+ file_cnt = 0;
+
+ } else if (fade_position + xfade > _length) {
+
+ /* read ends beyond end of data, read some, memset the rest */
+
+ file_cnt = _length - fade_position;
+
+ } else {
+
+ /* read is entirely within data */
+
+ file_cnt = xfade;
+ }
+
+ if (file_cnt) {
+
+ if ((retval = read_unlocked (xfade_buf, fade_position, file_cnt)) != (ssize_t) file_cnt) {
+ if (retval >= 0 && errno == EAGAIN) {
+ /* XXX - can we really trust that errno is meaningful here? yes POSIX, i'm talking to you.
+ * short or no data there */
+ memset (xfade_buf, 0, xfade * sizeof(Sample));
+ } else {
+ error << string_compose(_("SndFileSource: \"%1\" bad read retval: %2 of %5 (%3: %4)"), _path, retval, errno, strerror (errno), xfade) << endmsg;
+ return 0;
}
- tmpbufsize = real_cnt;
- tmpbuf = new float[tmpbufsize];
}
-
- nread = sf_read_float (sf, tmpbuf, real_cnt);
- ptr = tmpbuf + channel;
- nread /= _info.channels;
-
- /* stride through the interleaved data */
-
- for (int32_t n = 0; n < nread; ++n) {
- dst[n] = *ptr;
- ptr += _info.channels;
+ }
+
+ if (file_cnt != xfade) {
+ framecnt_t delta = xfade - file_cnt;
+ memset (xfade_buf+file_cnt, 0, sizeof (Sample) * delta);
+ }
+
+ if (nofade && !fade_in) {
+ if (write_float (data, file_pos, nofade) != nofade) {
+ error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
+ return 0;
}
}
- _read_data_count = cnt * sizeof(float);
-
- return nread;
+ if (xfade == xfade_frames) {
+
+ framecnt_t n;
+
+ /* use the standard xfade curve */
+
+ if (fade_in) {
+
+ /* fade new material in */
+
+ for (n = 0; n < xfade; ++n) {
+ xfade_buf[n] = (xfade_buf[n] * out_coefficient[n]) + (fade_data[n] * in_coefficient[n]);
+ }
+
+ } else {
+
+
+ /* fade new material out */
+
+ for (n = 0; n < xfade; ++n) {
+ xfade_buf[n] = (xfade_buf[n] * in_coefficient[n]) + (fade_data[n] * out_coefficient[n]);
+ }
+ }
+
+ } else if (xfade < xfade_frames) {
+
+ gain_t in[xfade];
+ gain_t out[xfade];
+
+ /* short xfade, compute custom curve */
+
+ compute_equal_power_fades (xfade, in, out);
+
+ for (framecnt_t n = 0; n < xfade; ++n) {
+ xfade_buf[n] = (xfade_buf[n] * out[n]) + (fade_data[n] * in[n]);
+ }
+
+ } else if (xfade) {
+
+ /* long xfade length, has to be computed across several calls */
+
+ }
+
+ if (xfade) {
+ if (write_float (xfade_buf, fade_position, xfade) != xfade) {
+ error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
+ return 0;
+ }
+ }
+
+ if (fade_in && nofade) {
+ if (write_float (data + xfade, file_pos + xfade, nofade) != nofade) {
+ error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
+ return 0;
+ }
+ }
+
+ return cnt;
+}
+
+framepos_t
+SndFileSource::last_capture_start_frame () const
+{
+ if (destructive()) {
+ return capture_start_frame;
+ } else {
+ return 0;
+ }
+}
+
+void
+SndFileSource::handle_header_position_change ()
+{
+ if (destructive()) {
+ if ( _length != 0 ) {
+ error << string_compose(_("Filesource: start time is already set for existing file (%1): Cannot change start time."), _path ) << endmsg;
+ //in the future, pop up a dialog here that allows user to regenerate file with new start offset
+ } else if (writable()) {
+ _timeline_position = header_position_offset;
+ set_header_timeline_position (); //this will get flushed if/when the file is recorded to
+ }
+ }
}
+void
+SndFileSource::setup_standard_crossfades (Session const & s, framecnt_t rate)
+{
+ /* This static method is assumed to have been called by the Session
+ before any DFS's are created.
+ */
+
+ xfade_frames = (framecnt_t) floor ((s.config.get_destructive_xfade_msecs () / 1000.0) * rate);
+
+ delete [] out_coefficient;
+ delete [] in_coefficient;
+
+ out_coefficient = new gain_t[xfade_frames];
+ in_coefficient = new gain_t[xfade_frames];
+
+ compute_equal_power_fades (xfade_frames, in_coefficient, out_coefficient);
+}
+
+void
+SndFileSource::set_timeline_position (framepos_t pos)
+{
+ // destructive track timeline postion does not change
+ // except at instantion or when header_position_offset
+ // (session start) changes
+
+ if (!destructive()) {
+ AudioFileSource::set_timeline_position (pos);
+ }
+}
+
+int
+SndFileSource::get_soundfile_info (const string& path, SoundFileInfo& info, string& error_msg)
+{
+ SNDFILE *sf;
+ SF_INFO sf_info;
+ BroadcastInfo binfo;
+
+ sf_info.format = 0; // libsndfile says to clear this before sf_open().
+
+ if ((sf = sf_open ((char*) path.c_str(), SFM_READ, &sf_info)) == 0) {
+ char errbuf[256];
+ error_msg = sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+ return false;
+ }
+
+ info.samplerate = sf_info.samplerate;
+ info.channels = sf_info.channels;
+ info.length = sf_info.frames;
+
+ string major = sndfile_major_format(sf_info.format);
+ string minor = sndfile_minor_format(sf_info.format);
+
+ if (major.length() + minor.length() < 16) { /* arbitrary */
+ info.format_name = string_compose("%1/%2", major, minor);
+ } else {
+ info.format_name = string_compose("%1\n%2", major, minor);
+ }
+
+ info.timecode = binfo.load_from_file (sf) ? binfo.get_time_reference() : 0;
+
+ sf_close (sf);
+
+ return true;
+}
+
+bool
+SndFileSource::one_of_several_channels () const
+{
+ return _info.channels > 1;
+}
+
+bool
+SndFileSource::clamped_at_unity () const
+{
+ int const type = _info.format & SF_FORMAT_TYPEMASK;
+ int const sub = _info.format & SF_FORMAT_SUBMASK;
+ /* XXX: this may not be the full list of formats that are unclamped */
+ return (sub != SF_FORMAT_FLOAT && sub != SF_FORMAT_DOUBLE && type != SF_FORMAT_OGG);
+}
+
+void
+SndFileSource::file_closed ()
+{
+ /* stupid libsndfile updated the headers on close,
+ so touch the peakfile if it exists and has data
+ to make sure its time is as new as the audio
+ file.
+ */
+
+ touch_peakfile ();
+}
+
+void
+SndFileSource::set_path (const string& p)
+{
+ FileSource::set_path (p);
+
+ if (_descriptor) {
+ _descriptor->set_path (_path);
+ }
+}
projects / ardour.git / blobdiff