+++ /dev/null
-/*
- 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
-*/
-
-#ifndef __ardour_destructive_file_source_h__
-#define __ardour_destructive_file_source_h__
-
-#include <string>
-
-#include <ardour/sndfilesource.h>
-
-struct tm;
-
-namespace ARDOUR {
-
-class DestructiveFileSource : public SndFileSource {
- public:
- DestructiveFileSource (Session&, std::string path, SampleFormat samp_format, HeaderFormat hdr_format, nframes_t rate,
- Flag flags = AudioFileSource::Flag (AudioFileSource::Writable));
-
- DestructiveFileSource (Session&, std::string path, Flag flags);
-
- DestructiveFileSource (Session&, const XMLNode&);
- ~DestructiveFileSource ();
-
- nframes_t last_capture_start_frame() const;
- void mark_capture_start (nframes_t);
- void mark_capture_end ();
- void clear_capture_marks();
-
- XMLNode& get_state ();
-
- static void setup_standard_crossfades (nframes_t sample_rate);
-
- int read_peaks (PeakData *peaks, nframes_t npeaks, nframes_t start, nframes_t cnt, double samples_per_unit) const;
-
- protected:
- nframes_t write_unlocked (Sample *src, nframes_t cnt);
-
- virtual void handle_header_position_change ();
-
- private:
- static nframes_t xfade_frames;
- static gain_t* out_coefficient;
- static gain_t* in_coefficient;
-
- bool _capture_start;
- bool _capture_end;
- nframes_t capture_start_frame;
- nframes_t file_pos; // unit is frames
- Sample* xfade_buf;
-
- void init ();
- nframes_t crossfade (Sample* data, nframes_t cnt, int dir);
- void set_timeline_position (int64_t);
-};
-
-}
-
-#endif /* __ardour_destructive_file_source_h__ */
+++ /dev/null
-/*
- 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id$
-*/
-
-/* This is is very hacky way to get pread and pwrite declarations.
- First, include <features.h> so that we can avoid its #undef __USE_UNIX98.
- Then define __USE_UNIX98, include <unistd.h>, and then undef it
- again. If #define _XOPEN_SOURCE actually worked, I'd use that, but
- despite claims in the header that it does, it doesn't.
-
- features.h isn't available on osx and it compiles fine without it.
-*/
-
-#ifdef HAVE_FEATURES_H
-#include <features.h>
-#endif
-
-#if __GNUC__ >= 3
-// #define _XOPEN_SOURCE 500
-#include <unistd.h>
-#else
-#define __USE_UNIX98
-#include <unistd.h>
-#undef __USE_UNIX98
-#endif
-
-// darwin supports 64 by default and doesn't provide wrapper functions.
-#if defined (__APPLE__)
-typedef off_t off64_t;
-#define open64 open
-#define close64 close
-#define lseek64 lseek
-#define pread64 pread
-#define pwrite64 pwrite
-#endif
-
-#include <errno.h>
-#include <cmath>
-#include <fcntl.h>
-
-#include <pbd/error.h>
-#include <pbd/stacktrace.h>
-#include <ardour/destructive_filesource.h>
-#include <ardour/utils.h>
-#include <ardour/session.h>
-
-#include "i18n.h"
-
-using namespace std;
-using namespace ARDOUR;
-using namespace PBD;
-
-gain_t* DestructiveFileSource::out_coefficient = 0;
-gain_t* DestructiveFileSource::in_coefficient = 0;
-nframes_t DestructiveFileSource::xfade_frames = 64;
-
-DestructiveFileSource::DestructiveFileSource (Session& s, string path, SampleFormat samp_format, HeaderFormat hdr_format, nframes_t rate, Flag flags)
- : SndFileSource (s, path, samp_format, hdr_format, rate, flags)
-{
- init ();
-}
-
-
-DestructiveFileSource::DestructiveFileSource (Session& s, string path, Flag flags)
- : SndFileSource (s, path, flags)
-{
- init ();
-}
-
-DestructiveFileSource::DestructiveFileSource (Session& s, const XMLNode& node)
- : SndFileSource (s, node)
-{
- init ();
-}
-
-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()
-{
- delete xfade_buf;
-}
-
-void
-DestructiveFileSource::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);
-
- if (out_coefficient) {
- delete [] out_coefficient;
- }
-
- if (in_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
-DestructiveFileSource::mark_capture_start (nframes_t pos)
-{
- if (pos < timeline_position) {
- _capture_start = false;
- } else {
- _capture_start = true;
- capture_start_frame = pos;
- }
-}
-
-void
-DestructiveFileSource::mark_capture_end()
-{
- _capture_end = true;
-}
-
-void
-DestructiveFileSource::clear_capture_marks ()
-{
- _capture_start = false;
- _capture_end = false;
-}
-
-nframes_t
-DestructiveFileSource::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(_("DestructiveFileSource: \"%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(_("DestructiveFileSource: \"%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) {
-
- 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]);
- }
- }
-
- if (xfade) {
- if (write_float (xfade_buf, fade_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) {
- error << string_compose(_("DestructiveFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
- return 0;
- }
- }
-
- return cnt;
-}
-
-nframes_t
-DestructiveFileSource::write_unlocked (Sample* data, nframes_t cnt)
-{
- nframes_t old_file_pos;
-
- if (!writable()) {
- 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;
-
- /* 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
-
- } 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);
- file_pos += cnt;
-
- if (_build_peakfiles) {
- PeakBuildRecord *pbr = 0;
-
- if (pending_peak_builds.size()) {
- pbr = pending_peak_builds.back();
- }
-
- if (pbr && pbr->frame + pbr->cnt == old_file_pos) {
-
- /* the last PBR extended to the start of the current write,
- so just extend it again.
- */
-
- pbr->cnt += cnt;
- } else {
- pending_peak_builds.push_back (new PeakBuildRecord (old_file_pos, cnt));
- }
-
- _peaks_built = false;
- }
-
- if (_build_peakfiles) {
- queue_for_peaks (shared_from_this ());
- }
-
- return cnt;
-}
-
-nframes_t
-DestructiveFileSource::last_capture_start_frame () const
-{
- return capture_start_frame;
-}
-
-XMLNode&
-DestructiveFileSource::get_state ()
-{
- XMLNode& node = AudioFileSource::get_state ();
- node.add_property (X_("destructive"), "true");
- 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 (int64_t pos)
-{
- //destructive track timeline postion does not change except at instantion or when header_position_offset (session start) changes
-}
-
-int
-DestructiveFileSource::read_peaks (PeakData *peaks, nframes_t npeaks, nframes_t start, nframes_t cnt, double samples_per_unit) const
-{
- // cerr << _name << " read peaks at " << start << " for " << cnt << " tpos = " << timeline_position << endl;
- return AudioFileSource::read_peaks (peaks, npeaks, start, cnt, samples_per_unit);
-}
-
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