along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
+#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/version.h>
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
-
-SndFileSource::SndFileSource (const XMLNode& node)
- : AudioFileSource (node)
+using Glib::ustring;
+
+gain_t* SndFileSource::out_coefficient = 0;
+gain_t* SndFileSource::in_coefficient = 0;
+nframes_t SndFileSource::xfade_frames = 64;
+const AudioFileSource::Flag SndFileSource::default_writable_flags = AudioFileSource::Flag (AudioFileSource::Writable|
+ AudioFileSource::Removable|
+ AudioFileSource::RemovableIfEmpty|
+ AudioFileSource::CanRename);
+
+SndFileSource::SndFileSource (Session& s, const XMLNode& node)
+ : AudioFileSource (s, node)
{
- init (_name);
+ init ();
if (open()) {
throw failed_constructor ();
}
-
- if (_build_peakfiles) {
- if (initialize_peakfile (false, _path)) {
- sf_close (sf);
- sf = 0;
- throw failed_constructor ();
- }
- }
-
- AudioSourceCreated (this); /* EMIT SIGNAL */
}
-SndFileSource::SndFileSource (string idstr, Flag flags)
- /* files created this way are never writable or removable */
- : AudioFileSource (idstr, Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
+SndFileSource::SndFileSource (Session& s, ustring path, int chn, Flag flags)
+ /* files created this way are never writable or removable */
+ : AudioFileSource (s, path, Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
{
- init (idstr);
+ _channel = chn;
+
+ init ();
if (open()) {
throw failed_constructor ();
}
-
- if (!(_flags & NoPeakFile) && _build_peakfiles) {
- if (initialize_peakfile (false, _path)) {
- sf_close (sf);
- sf = 0;
- throw failed_constructor ();
- }
- }
-
-
- AudioSourceCreated (this); /* EMIT SIGNAL */
}
-SndFileSource::SndFileSource (string idstr, SampleFormat sfmt, HeaderFormat hf, jack_nframes_t rate, Flag flags)
- : AudioFileSource(idstr, flags, sfmt, hf)
+SndFileSource::SndFileSource (Session& s, ustring path, SampleFormat sfmt, HeaderFormat hf, nframes_t rate, Flag flags)
+ : AudioFileSource (s, path, flags, sfmt, hf)
{
int fmt = 0;
- init (idstr);
+ init ();
+
+ /* this constructor is used to construct new files, not open
+ existing ones.
+ */
+
+ file_is_new = true;
switch (hf) {
case CAF:
case FormatInt24:
fmt |= SF_FORMAT_PCM_24;
break;
+
+ case FormatInt16:
+ fmt |= SF_FORMAT_PCM_16;
+ break;
}
_info.channels = 1;
if (writable() && (_flags & Broadcast)) {
- _broadcast_info = new SF_BROADCAST_INFO;
- memset (_broadcast_info, 0, sizeof (*_broadcast_info));
-
- snprintf (_broadcast_info->description, sizeof (_broadcast_info->description), "BWF %s", _name.c_str());
-
- struct utsname utsinfo;
-
- if (uname (&utsinfo)) {
- error << string_compose(_("FileSource: cannot get host information for BWF header (%1)"), strerror(errno)) << endmsg;
- return;
+ if (!_broadcast_info) {
+ _broadcast_info = new BroadcastInfo;
}
-
- snprintf (_broadcast_info->originator, sizeof (_broadcast_info->originator), "ardour:%s:%s:%s:%s:%s)",
- Glib::get_real_name().c_str(),
- utsinfo.nodename,
- utsinfo.sysname,
- utsinfo.release,
- utsinfo.version);
-
- _broadcast_info->version = 1;
- _broadcast_info->time_reference_low = 0;
- _broadcast_info->time_reference_high = 0;
-
- /* XXX do something about this field */
-
- snprintf (_broadcast_info->umid, sizeof (_broadcast_info->umid), "%s", "fnord");
-
- /* coding history is added by libsndfile */
- if (sf_command (sf, SFC_SET_BROADCAST_INFO, _broadcast_info, sizeof (_broadcast_info)) != SF_TRUE) {
- char errbuf[256];
- sf_error_str (0, errbuf, sizeof (errbuf) - 1);
- error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"), _path, errbuf) << endmsg;
+ _broadcast_info->set_from_session (s, 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;
}
-
- }
-
- if (!(_flags & NoPeakFile) && _build_peakfiles) {
- if (initialize_peakfile (true, _path)) {
- sf_close (sf);
- sf = 0;
- throw failed_constructor ();
- }
}
-
- AudioSourceCreated (this); /* EMIT SIGNAL */
-
}
void
-SndFileSource::init (const string& idstr)
+SndFileSource::init ()
{
- string::size_type pos;
- string file;
+ ustring file;
- interleave_buf = 0;
- interleave_bufsize = 0;
+ // lets try to keep the object initalizations here at the top
+ xfade_buf = 0;
sf = 0;
_broadcast_info = 0;
- if ((pos = idstr.find_last_of (':')) == string::npos) {
- channel = 0;
- _name = Glib::path_get_basename (idstr);
+ if (is_embedded()) {
+ _name = _path;
} else {
- channel = atoi (idstr.substr (pos+1).c_str());
- _name = Glib::path_get_basename (idstr.substr (0, pos));
+ _name = Glib::path_get_basename (_path);
}
/* although libsndfile says we don't need to set this,
*/
memset (&_info, 0, sizeof(_info));
+
+ _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 (mem_fun (*this, &SndFileSource::handle_header_position_change));
}
int
if ((sf = sf_open (_path.c_str(), (writable() ? SFM_RDWR : SFM_READ), &_info)) == 0) {
char errbuf[256];
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+#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.
+ */
+
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;
+ 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
sf_close (sf);
sf = 0;
return -1;
_length = _info.frames;
-
- _broadcast_info = (SF_BROADCAST_INFO*) calloc (1, sizeof (SF_BROADCAST_INFO));
-
- /* lookup broadcast info */
+ if (!_broadcast_info) {
+ _broadcast_info = new BroadcastInfo;
+ }
- if (sf_command (sf, SFC_GET_BROADCAST_INFO, _broadcast_info, sizeof (*_broadcast_info)) != SF_TRUE) {
-
- /* if the file has data but no broadcast info, then clearly, there is no broadcast info */
+ bool bwf_info_exists = _broadcast_info->load_from_file (sf);
- if (_length) {
- free (_broadcast_info);
- _broadcast_info = 0;
- _flags = Flag (_flags & ~Broadcast);
- }
-
- set_timeline_position (header_position_offset);
-
- } else {
-
- /* XXX 64 bit alert: when JACK switches to a 64 bit frame count, this needs to use the high bits
- of the time reference.
- */
+ set_timeline_position (bwf_info_exists ? _broadcast_info->get_time_reference() : header_position_offset);
- set_timeline_position ( _broadcast_info->time_reference_low );
+ if (_length != 0 && !bwf_info_exists) {
+ delete _broadcast_info;
+ _broadcast_info = 0;
+ _flags = Flag (_flags & ~Broadcast);
}
if (writable()) {
SndFileSource::~SndFileSource ()
{
- GoingAway (this); /* EMIT SIGNAL */
+ GoingAway (); /* EMIT SIGNAL */
if (sf) {
sf_close (sf);
sf = 0;
- }
- if (interleave_buf) {
- delete [] interleave_buf;
- }
+ /* 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.
+ */
- if (_broadcast_info) {
- delete _broadcast_info;
+ touch_peakfile ();
}
+
+ delete _broadcast_info;
+ delete [] xfade_buf;
}
float
return _info.samplerate;
}
-jack_nframes_t
-SndFileSource::read_unlocked (Sample *dst, jack_nframes_t start, jack_nframes_t cnt) const
+nframes_t
+SndFileSource::read_unlocked (Sample *dst, nframes_t start, nframes_t cnt) const
{
int32_t nread;
float *ptr;
uint32_t real_cnt;
- jack_nframes_t file_cnt;
+ nframes_t file_cnt;
if (start > _length) {
file_cnt = cnt;
}
+ if (file_cnt != cnt) {
+ nframes_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) {
}
if (_info.channels == 1) {
- jack_nframes_t ret = sf_read_float (sf, dst, file_cnt);
- _read_data_count = cnt * sizeof(float);
+ nframes_t ret = sf_read_float (sf, dst, file_cnt);
+ _read_data_count = ret * sizeof(float);
+ if (ret != file_cnt) {
+ char errbuf[256];
+ sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+ cerr << string_compose(_("SndFileSource: @ %1 could not read %2 within %3 (%4) (len = %5)"), start, file_cnt, _name.substr (1), errbuf, _length) << endl;
+ }
return ret;
}
}
- if (file_cnt != cnt) {
- jack_nframes_t delta = cnt - file_cnt;
- memset (dst+file_cnt, 0, sizeof (Sample) * delta);
- }
-
real_cnt = cnt * _info.channels;
- if (interleave_bufsize < real_cnt) {
-
- if (interleave_buf) {
- delete [] interleave_buf;
- }
- interleave_bufsize = real_cnt;
- interleave_buf = new float[interleave_bufsize];
- }
+ Sample* interleave_buf = get_interleave_buffer (real_cnt);
nread = sf_read_float (sf, interleave_buf, real_cnt);
- ptr = interleave_buf + channel;
+ ptr = interleave_buf + _channel;
nread /= _info.channels;
/* stride through the interleaved data */
return nread;
}
-jack_nframes_t
-SndFileSource::write_unlocked (Sample *data, jack_nframes_t cnt)
+nframes_t
+SndFileSource::write_unlocked (Sample *data, nframes_t cnt)
+{
+ if (destructive()) {
+ return destructive_write_unlocked (data, cnt);
+ } else {
+ return nondestructive_write_unlocked (data, cnt);
+ }
+}
+
+nframes_t
+SndFileSource::nondestructive_write_unlocked (Sample *data, nframes_t cnt)
{
if (!writable()) {
+ warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
return 0;
}
return 0;
}
- jack_nframes_t oldlen;
+ nframes_t oldlen;
int32_t frame_pos = _length;
-
+
if (write_float (data, frame_pos, cnt) != cnt) {
return 0;
}
update_length (oldlen, cnt);
if (_build_peakfiles) {
- PeakBuildRecord *pbr = 0;
+ compute_and_write_peaks (data, frame_pos, cnt, false, true);
+ }
+
+ _write_data_count = cnt;
+
+ return cnt;
+}
+
+nframes_t
+SndFileSource::destructive_write_unlocked (Sample* data, nframes_t cnt)
+{
+ nframes_t old_file_pos;
+
+ 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 (pending_peak_builds.size()) {
- pbr = pending_peak_builds.back();
- }
-
- if (pbr && pbr->frame + pbr->cnt == oldlen) {
-
- /* the last PBR extended to the start of the current write,
- so just extend it again.
- */
+ /* move to the correct location place */
+ file_pos = capture_start_frame - timeline_position;
+
+ // split cnt in half
+ nframes_t subcnt = cnt / 2;
+ nframes_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
- pbr->cnt += cnt;
- } else {
- pending_peak_builds.push_back (new PeakBuildRecord (oldlen, cnt));
- }
-
- _peaks_built = false;
+ } 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;
+ }
}
-
-
+
+ old_file_pos = file_pos;
+ update_length (file_pos, cnt);
+
if (_build_peakfiles) {
- queue_for_peaks (*this);
+ compute_and_write_peaks (data, file_pos, cnt, false, true);
}
- _write_data_count = cnt;
+ file_pos += cnt;
return cnt;
}
int
-SndFileSource::update_header (jack_nframes_t when, struct tm& now, time_t tnow)
+SndFileSource::update_header (nframes_t when, struct tm& now, time_t tnow)
{
set_timeline_position (when);
SndFileSource::flush_header ()
{
if (!writable() || (sf == 0)) {
+ warning << string_compose (_("attempt to flush a non-writable audio file source (%1)"), _path) << endmsg;
return -1;
}
-
return (sf_command (sf, SFC_UPDATE_HEADER_NOW, 0, 0) != SF_TRUE);
}
int
-SndFileSource::setup_broadcast_info (jack_nframes_t when, struct tm& now, time_t tnow)
+SndFileSource::setup_broadcast_info (nframes_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;
}
return 0;
}
- /* random code is 9 digits */
-
- int random_code = random() % 999999999;
-
- snprintf (_broadcast_info->originator_reference, sizeof (_broadcast_info->originator_reference), "%2s%3s%12s%02d%02d%02d%9d",
- bwf_country_code,
- bwf_organization_code,
- bwf_serial_number,
- now.tm_hour,
- now.tm_min,
- now.tm_sec,
- random_code);
+ _broadcast_info->set_originator_ref ();
+ _broadcast_info->set_origination_time (&now);
- snprintf (_broadcast_info->origination_date, sizeof (_broadcast_info->origination_date), "%4d-%02d-%02d",
- 1900 + now.tm_year,
- now.tm_mon,
- now.tm_mday);
-
- snprintf (_broadcast_info->origination_time, sizeof (_broadcast_info->origination_time), "%02d:%02d:%02d",
- now.tm_hour,
- now.tm_min,
- now.tm_sec);
-
/* now update header position taking header offset into account */
set_header_timeline_position ();
- if (sf_command (sf, SFC_SET_BROADCAST_INFO, _broadcast_info, sizeof (*_broadcast_info)) != SF_TRUE) {
- error << string_compose (_("cannot set broadcast info for audio file %1; Dropping broadcast info for this file"), _path) << endmsg;
+ 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);
- free (_broadcast_info);
+ delete _broadcast_info;
_broadcast_info = 0;
- return -1;
}
return 0;
return;
}
- _broadcast_info->time_reference_high = (timeline_position >> 32);
- _broadcast_info->time_reference_low = (timeline_position & 0xffffffff);
+ _broadcast_info->set_time_reference (timeline_position);
- if (sf_command (sf, SFC_SET_BROADCAST_INFO, _broadcast_info, sizeof (*_broadcast_info)) != SF_TRUE) {
- error << string_compose (_("cannot set broadcast info for audio file %1; Dropping broadcast info for this file"), _path) << endmsg;
+ 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);
- free (_broadcast_info);
+ delete _broadcast_info;
_broadcast_info = 0;
}
}
-jack_nframes_t
-SndFileSource::write_float (Sample* data, jack_nframes_t frame_pos, jack_nframes_t cnt)
+nframes_t
+SndFileSource::write_float (Sample* data, nframes_t frame_pos, nframes_t cnt)
{
- if (sf_seek (sf, frame_pos, SEEK_SET|SFM_WRITE) != frame_pos) {
- error << string_compose (_("%1: cannot seek to %2"), _path, frame_pos) << endmsg;
+ if (sf_seek (sf, frame_pos, SEEK_SET|SFM_WRITE) < 0) {
+ char errbuf[256];
+ sf_error_str (0, errbuf, sizeof (errbuf) - 1);
+ error << string_compose (_("%1: cannot seek to %2 (libsndfile error: %3"), _path, frame_pos, errbuf) << endmsg;
return 0;
}
return cnt;
}
-jack_nframes_t
+nframes_t
SndFileSource::natural_position() const
{
return timeline_position;
}
+
+bool
+SndFileSource::set_destructive (bool yn)
+{
+ if (yn) {
+ _flags = Flag (_flags | 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;
+}
+
+void
+SndFileSource::mark_capture_start (nframes_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;
+ }
+}
+
+nframes_t
+SndFileSource::crossfade (Sample* data, nframes_t cnt, int fade_in)
+{
+ nframes_t xfade = min (xfade_frames, cnt);
+ nframes_t nofade = cnt - xfade;
+ Sample* fade_data = 0;
+ nframes_t fade_position = 0; // in frames
+ ssize_t retval;
+ nframes_t file_cnt;
+
+ 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;
+ }
+ }
+ }
+
+ if (file_cnt != xfade) {
+ nframes_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;
+ }
+ }
+
+ if (xfade == xfade_frames) {
+
+ nframes_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 (nframes_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;
+}
+
+nframes_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 (nframes_t rate)
+{
+ /* This static method is assumed to have been called by the Session
+ before any DFS's are created.
+ */
+
+ xfade_frames = (nframes_t) floor ((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 (int64_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 ustring& 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;
+ info.format_name = string_compose("Format: %1, %2",
+ sndfile_major_format(sf_info.format),
+ sndfile_minor_format(sf_info.format));
+
+ 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;
+}
+
projects / ardour.git / blobdiff