#include <pbd/error.h>
#include <ardour/destructive_filesource.h>
+#include <ardour/utils.h>
#include "i18n.h"
gain_t* DestructiveFileSource::in_coefficient = 0;
jack_nframes_t DestructiveFileSource::xfade_frames = 64;
-DestructiveFileSource::DestructiveFileSource (string path, SampleFormat samp_format, HeaderFormat hdr_format, jack_nframes_t rate, Flag flags)
- : SndFileSource (path, samp_format, hdr_format, rate, flags)
+DestructiveFileSource::DestructiveFileSource (Session& s, string path, SampleFormat samp_format, HeaderFormat hdr_format, jack_nframes_t rate, Flag flags)
+ : SndFileSource (s, path, samp_format, hdr_format, rate, flags)
{
- xfade_buf = new Sample[xfade_frames];
+ init ();
+}
- _capture_start = false;
- _capture_end = false;
- file_pos = 0;
+
+DestructiveFileSource::DestructiveFileSource (Session& s, string path, Flag flags)
+ : SndFileSource (s, path, flags)
+{
+ init ();
+}
+
+DestructiveFileSource::DestructiveFileSource (Session& s, const XMLNode& node)
+ : SndFileSource (s, node)
+{
+ init ();
}
-DestructiveFileSource::DestructiveFileSource (const XMLNode& node)
- : SndFileSource (node)
+void
+DestructiveFileSource::init ()
{
xfade_buf = new Sample[xfade_frames];
_capture_start = false;
_capture_end = false;
file_pos = 0;
+
+ timeline_position = header_position_offset;
+ AudioFileSource::HeaderPositionOffsetChanged.connect (mem_fun (*this, &DestructiveFileSource::handle_header_position_change));
}
DestructiveFileSource::~DestructiveFileSource()
out_coefficient = new gain_t[xfade_frames];
in_coefficient = new gain_t[xfade_frames];
- for (jack_nframes_t n = 0; n < xfade_frames; ++n) {
-
- /* XXXX THIS IS NOT THE RIGHT XFADE CURVE: USE A PROPER VOLUMETRIC EQUAL POWER CURVE */
-
- in_coefficient[n] = n/(gain_t) (xfade_frames-1); /* 0 .. 1 */
- out_coefficient[n] = 1.0 - in_coefficient[n]; /* 1 .. 0 */
- }
+ compute_equal_power_fades (xfade_frames, in_coefficient, out_coefficient);
}
void
DestructiveFileSource::mark_capture_start (jack_nframes_t pos)
{
- _capture_start = true;
- capture_start_frame = pos;
+ if (pos < timeline_position) {
+ _capture_start = false;
+ } else {
+ _capture_start = true;
+ capture_start_frame = pos;
+ }
}
void
}
jack_nframes_t
-DestructiveFileSource::crossfade (Sample* data, jack_nframes_t cnt, int fade_in, char * workbuf)
+DestructiveFileSource::crossfade (Sample* data, jack_nframes_t cnt, int fade_in)
{
jack_nframes_t xfade = min (xfade_frames, cnt);
jack_nframes_t nofade = cnt - xfade;
}
if (file_cnt) {
- if ((retval = write_float (xfade_buf, fade_position, file_cnt)) != (ssize_t) 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 */
}
if (nofade && !fade_in) {
- if (write_float (data, file_pos, nofade) != nofade) {
+ if (write_float (data, file_pos - timeline_position, nofade) != nofade) {
error << string_compose(_("DestructiveFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
return 0;
}
} else if (xfade) {
+ gain_t in[xfade];
+ gain_t out[xfade];
+
/* short xfade, compute custom curve */
- /* XXX COMPUTE THE CURVE, DAMMIT! */
+ compute_equal_power_fades (xfade, in, out);
for (jack_nframes_t n = 0; n < xfade; ++n) {
- xfade_buf[n] = (xfade_buf[n] * out_coefficient[n]) + (fade_data[n] * in_coefficient[n]);
+ xfade_buf[n] = (xfade_buf[n] * out[n]) + (fade_data[n] * in[n]);
}
}
if (xfade) {
- if (write_float (xfade_buf, fade_position, xfade) != xfade) {
+ if (write_float (xfade_buf, fade_position - timeline_position, xfade) != xfade) {
error << string_compose(_("DestructiveFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
return 0;
}
}
if (fade_in && nofade) {
- if (write_float (data + xfade, file_pos + xfade, nofade) != nofade) {
+ if (write_float (data + xfade, file_pos + xfade - timeline_position, nofade) != nofade) {
error << string_compose(_("DestructiveFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
return 0;
}
}
jack_nframes_t
-DestructiveFileSource::write_unlocked (Sample* data, jack_nframes_t cnt, char * workbuf)
+DestructiveFileSource::write_unlocked (Sample* data, jack_nframes_t cnt)
{
jack_nframes_t old_file_pos;
}
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;
jack_nframes_t ofilepos = file_pos;
// fade in
- if (crossfade (data, subcnt, 1, workbuf) != subcnt) {
+ if (crossfade (data, subcnt, 1) != subcnt) {
return 0;
}
// fade out
subcnt = cnt - subcnt;
- if (crossfade (tmpdata, subcnt, 0, workbuf) != subcnt) {
+ if (crossfade (tmpdata, subcnt, 0) != subcnt) {
return 0;
}
file_pos = ofilepos; // adjusted below
- }
- else if (_capture_start) {
+
+ } 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;
- if (crossfade (data, cnt, 1, workbuf) != cnt) {
+ 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, workbuf) != cnt) {
+ if (crossfade (data, cnt, 0) != cnt) {
return 0;
}
} else {
- if (write_float (data, file_pos, cnt) != cnt) {
+ /* in the middle of recording */
+
+ if (write_float (data, file_pos - timeline_position, cnt) != cnt) {
return 0;
}
}
}
if (_build_peakfiles) {
- queue_for_peaks (*this);
+ queue_for_peaks (this);
}
return cnt;
return node;
}
+void
+DestructiveFileSource::handle_header_position_change ()
+{
+ 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
DestructiveFileSource::set_timeline_position (jack_nframes_t pos)
{
- /* destructive tracks always start at where our reference frame zero is */
- timeline_position = 0;
+ //destructive track timeline postion does not change except at instantion or when header_position_offset (session start) changes
}
projects / ardour.git / blobdiff