/*
- Copyright (C) 2000 Paul Davis
+ Copyright (C) 2000 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: source.cc 404 2006-03-17 17:39:21Z pauld $
*/
-#include <sys/stat.h>
+#ifdef COMPILER_MSVC
+#include <sys/utime.h>
+#else
#include <unistd.h>
+#include <utime.h>
+#endif
+#include <sys/stat.h>
#include <fcntl.h>
-#include <poll.h>
#include <float.h>
-#include <utime.h>
#include <cerrno>
#include <ctime>
#include <cmath>
#include <algorithm>
#include <vector>
-#include <pbd/xml++.h>
-#include <pbd/pthread_utils.h>
+#ifdef PLATFORM_WINDOWS
+#include <windows.h>
+
+#else
+#include <sys/mman.h>
+
+#endif
+
+#include <glib.h>
+#include "pbd/gstdio_compat.h"
+
+#include <boost/scoped_ptr.hpp>
+
+#include <glibmm/fileutils.h>
+#include <glibmm/miscutils.h>
+
+#include "pbd/file_utils.h"
+#include "pbd/scoped_file_descriptor.h"
+#include "pbd/xml++.h"
-#include <ardour/audiosource.h>
+#include "ardour/audiosource.h"
+#include "ardour/rc_configuration.h"
+#include "ardour/runtime_functions.h"
+#include "ardour/session.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
+
+#include "ardour/debug.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
-pthread_t AudioSource::peak_thread;
-bool AudioSource::have_peak_thread = false;
-vector<AudioSource*> AudioSource::pending_peak_sources;
-Glib::Mutex* AudioSource::pending_peak_sources_lock = 0;
-int AudioSource::peak_request_pipe[2];
-
+Glib::Threads::Mutex AudioSource::_level_buffer_lock;
+vector<boost::shared_array<Sample> > AudioSource::_mixdown_buffers;
+vector<boost::shared_array<gain_t> > AudioSource::_gain_buffers;
bool AudioSource::_build_missing_peakfiles = false;
+
+/** true if we want peakfiles (e.g. if we are displaying a GUI) */
bool AudioSource::_build_peakfiles = false;
-AudioSource::AudioSource (Session& s, string name)
- : Source (s, name)
+#define _FPP 256
+
+AudioSource::AudioSource (Session& s, const string& name)
+ : Source (s, DataType::AUDIO, name)
+ , _length (0)
+ , _peak_byte_max (0)
+ , _peaks_built (false)
+ , _peakfile_fd (-1)
+ , peak_leftover_cnt (0)
+ , peak_leftover_size (0)
+ , peak_leftovers (0)
+ , _first_run (true)
+ , _last_scale (0.0)
+ , _last_map_off (0)
+ , _last_raw_map_length (0)
{
- if (pending_peak_sources_lock == 0) {
- pending_peak_sources_lock = new Glib::Mutex;
- }
-
- _peaks_built = false;
- next_peak_clear_should_notify = true;
- _read_data_count = 0;
- _write_data_count = 0;
}
-AudioSource::AudioSource (Session& s, const XMLNode& node)
+AudioSource::AudioSource (Session& s, const XMLNode& node)
: Source (s, node)
+ , _length (0)
+ , _peak_byte_max (0)
+ , _peaks_built (false)
+ , _peakfile_fd (-1)
+ , peak_leftover_cnt (0)
+ , peak_leftover_size (0)
+ , peak_leftovers (0)
+ , _first_run (true)
+ , _last_scale (0.0)
+ , _last_map_off (0)
+ , _last_raw_map_length (0)
{
- if (pending_peak_sources_lock == 0) {
- pending_peak_sources_lock = new Glib::Mutex;
- }
-
- _peaks_built = false;
- next_peak_clear_should_notify = true;
- _read_data_count = 0;
- _write_data_count = 0;
-
- if (set_state (node)) {
+ if (set_state (node, Stateful::loading_state_version)) {
throw failed_constructor();
}
}
AudioSource::~AudioSource ()
{
+ /* shouldn't happen but make sure we don't leak file descriptors anyway */
+
+ if (peak_leftover_cnt) {
+ cerr << "AudioSource destroyed with leftover peak data pending" << endl;
+ }
+
+ if ((-1) != _peakfile_fd) {
+ close (_peakfile_fd);
+ _peakfile_fd = -1;
+ }
+
+ delete [] peak_leftovers;
}
XMLNode&
XMLNode& node (Source::get_state());
if (_captured_for.length()) {
- node.add_property ("captured-for", _captured_for);
+ node.set_property ("captured-for", _captured_for);
}
return node;
}
int
-AudioSource::set_state (const XMLNode& node)
+AudioSource::set_state (const XMLNode& node, int /*version*/)
{
- const XMLProperty* prop;
-
- Source::set_state (node);
-
- if ((prop = node.property ("captured-for")) != 0) {
- _captured_for = prop->value();
- }
-
+ node.get_property ("captured-for", _captured_for);
return 0;
}
-/***********************************************************************
- PEAK FILE STUFF
- ***********************************************************************/
-
-void*
-AudioSource::peak_thread_work (void* arg)
+bool
+AudioSource::empty () const
{
- PBD::ThreadCreated (pthread_self(), X_("Peak"));
- struct pollfd pfd[1];
-
- if (pending_peak_sources_lock == 0) {
- pending_peak_sources_lock = new Glib::Mutex;
- }
-
- Glib::Mutex::Lock lm (*pending_peak_sources_lock);
-
- while (true) {
-
- pfd[0].fd = peak_request_pipe[0];
- pfd[0].events = POLLIN|POLLERR|POLLHUP;
-
- pending_peak_sources_lock->unlock ();
-
- if (poll (pfd, 1, -1) < 0) {
-
- if (errno == EINTR) {
- pending_peak_sources_lock->lock ();
- continue;
- }
-
- error << string_compose (_("poll on peak request pipe failed (%1)"),
- strerror (errno))
- << endmsg;
- break;
- }
-
- if (pfd[0].revents & ~POLLIN) {
- error << _("Error on peak thread request pipe") << endmsg;
- break;
- }
-
- if (pfd[0].revents & POLLIN) {
-
- char req;
-
- /* empty the pipe of all current requests */
-
- while (1) {
- size_t nread = ::read (peak_request_pipe[0], &req, sizeof (req));
-
- if (nread == 1) {
- switch ((PeakRequest::Type) req) {
-
- case PeakRequest::Build:
- break;
-
- case PeakRequest::Quit:
- pthread_exit_pbd (0);
- /*NOTREACHED*/
- break;
-
- default:
- break;
- }
-
- } else if (nread == 0) {
- break;
- } else if (errno == EAGAIN) {
- break;
- } else {
- fatal << _("Error reading from peak request pipe") << endmsg;
- /*NOTREACHED*/
- }
- }
- }
-
- pending_peak_sources_lock->lock ();
-
- while (!pending_peak_sources.empty()) {
-
- AudioSource* s = pending_peak_sources.front();
- pending_peak_sources.erase (pending_peak_sources.begin());
-
- pending_peak_sources_lock->unlock ();
- s->build_peaks();
- pending_peak_sources_lock->lock ();
- }
- }
-
- pthread_exit_pbd (0);
- /*NOTREACHED*/
- return 0;
+ return _length == 0;
}
-int
-AudioSource::start_peak_thread ()
+samplecnt_t
+AudioSource::length (samplepos_t /*pos*/) const
{
- if (!_build_peakfiles) {
- return 0;
- }
-
- if (pipe (peak_request_pipe)) {
- error << string_compose(_("Cannot create transport request signal pipe (%1)"), strerror (errno)) << endmsg;
- return -1;
- }
-
- if (fcntl (peak_request_pipe[0], F_SETFL, O_NONBLOCK)) {
- error << string_compose(_("UI: cannot set O_NONBLOCK on peak request pipe (%1)"), strerror (errno)) << endmsg;
- return -1;
- }
-
- if (fcntl (peak_request_pipe[1], F_SETFL, O_NONBLOCK)) {
- error << string_compose(_("UI: cannot set O_NONBLOCK on peak request pipe (%1)"), strerror (errno)) << endmsg;
- return -1;
- }
-
- if (pthread_create_and_store ("peak file builder", &peak_thread, 0, peak_thread_work, 0)) {
- error << _("AudioSource: could not create peak thread") << endmsg;
- return -1;
- }
-
- have_peak_thread = true;
- return 0;
+ return _length;
}
void
-AudioSource::stop_peak_thread ()
+AudioSource::update_length (samplecnt_t len)
{
- if (!have_peak_thread) {
- return;
+ if (len > _length) {
+ _length = len;
}
-
- void* status;
-
- char c = (char) PeakRequest::Quit;
- ::write (peak_request_pipe[1], &c, 1);
- pthread_join (peak_thread, &status);
}
-void
-AudioSource::queue_for_peaks (AudioSource* source)
-{
- if (have_peak_thread) {
-
- Glib::Mutex::Lock lm (*pending_peak_sources_lock);
-
- source->next_peak_clear_should_notify = true;
-
- if (find (pending_peak_sources.begin(),
- pending_peak_sources.end(),
- source) == pending_peak_sources.end()) {
- pending_peak_sources.push_back (source);
- }
-
- char c = (char) PeakRequest::Build;
- ::write (peak_request_pipe[1], &c, 1);
- }
-}
-
-void AudioSource::clear_queue_for_peaks ()
-{
- /* this is done to cancel a group of running peak builds */
- if (have_peak_thread) {
- Glib::Mutex::Lock lm (*pending_peak_sources_lock);
- pending_peak_sources.clear ();
- }
-}
+/***********************************************************************
+ PEAK FILE STUFF
+ ***********************************************************************/
+/** Checks to see if peaks are ready. If so, we return true. If not, we return false, and
+ * things are set up so that doThisWhenReady is called when the peaks are ready.
+ * A new PBD::ScopedConnection is created for the associated connection and written to
+ * *connect_here_if_not.
+ *
+ * @param doThisWhenReady Function to call when peaks are ready (if they are not already).
+ * @param connect_here_if_not Address to write new ScopedConnection to.
+ * @param event_loop Event loop for doThisWhenReady to be called in.
+ */
bool
-AudioSource::peaks_ready (sigc::slot<void> the_slot, sigc::connection& conn) const
+AudioSource::peaks_ready (boost::function<void()> doThisWhenReady, ScopedConnection** connect_here_if_not, EventLoop* event_loop) const
{
bool ret;
- Glib::Mutex::Lock lm (_lock);
-
- /* check to see if the peak data is ready. if not
- connect the slot while still holding the lock.
- */
+ Glib::Threads::Mutex::Lock lm (_peaks_ready_lock);
if (!(ret = _peaks_built)) {
- conn = PeaksReady.connect (the_slot);
+ *connect_here_if_not = new ScopedConnection;
+ PeaksReady.connect (**connect_here_if_not, MISSING_INVALIDATOR, doThisWhenReady, event_loop);
}
return ret;
void
AudioSource::touch_peakfile ()
{
- struct stat statbuf;
+ GStatBuf statbuf;
- if (stat (peakpath.c_str(), &statbuf) != 0 || statbuf.st_size == 0) {
+ if (g_stat (_peakpath.c_str(), &statbuf) != 0 || statbuf.st_size == 0) {
return;
}
-
+
struct utimbuf tbuf;
-
+
tbuf.actime = statbuf.st_atime;
- tbuf.modtime = time ((time_t) 0);
-
- utime (peakpath.c_str(), &tbuf);
+ tbuf.modtime = time ((time_t*) 0);
+
+ g_utime (_peakpath.c_str(), &tbuf);
}
int
{
/* caller must hold _lock */
- string oldpath = peakpath;
+ string oldpath = _peakpath;
- if (access (oldpath.c_str(), F_OK) == 0) {
- if (rename (oldpath.c_str(), newpath.c_str()) != 0) {
+ if (Glib::file_test (oldpath, Glib::FILE_TEST_EXISTS)) {
+ if (g_rename (oldpath.c_str(), newpath.c_str()) != 0) {
error << string_compose (_("cannot rename peakfile for %1 from %2 to %3 (%4)"), _name, oldpath, newpath, strerror (errno)) << endmsg;
return -1;
}
}
- peakpath = newpath;
+ _peakpath = newpath;
return 0;
}
int
-AudioSource::initialize_peakfile (bool newfile, string audio_path)
+AudioSource::initialize_peakfile (const string& audio_path, const bool in_session)
{
- struct stat statbuf;
-
- peakpath = peak_path (audio_path);
-
- /* Nasty band-aid for older sessions that were created before we
- used libsndfile for all audio files.
- */
-
- if (!newfile && access (peakpath.c_str(), R_OK) != 0) {
- string str = old_peak_path (audio_path);
- if (access (str.c_str(), R_OK) == 0) {
- peakpath = str;
+ Glib::Threads::Mutex::Lock lm (_initialize_peaks_lock);
+ GStatBuf statbuf;
+
+ _peakpath = construct_peak_filepath (audio_path, in_session);
+
+ if (!empty() && !Glib::file_test (_peakpath.c_str(), Glib::FILE_TEST_EXISTS)) {
+ string oldpeak = construct_peak_filepath (audio_path, in_session, true);
+ DEBUG_TRACE(DEBUG::Peaks, string_compose ("Looking for old peak file %1 for Audio file %2\n", oldpeak, audio_path));
+ if (Glib::file_test (oldpeak.c_str(), Glib::FILE_TEST_EXISTS)) {
+ // TODO use hard-link if possible
+ DEBUG_TRACE(DEBUG::Peaks, string_compose ("Copy old peakfile %1 to %2\n", oldpeak, _peakpath));
+ PBD::copy_file (oldpeak, _peakpath);
}
}
- if (newfile) {
+ DEBUG_TRACE(DEBUG::Peaks, string_compose ("Initialize Peakfile %1 for Audio file %2\n", _peakpath, audio_path));
- if (!_build_peakfiles) {
- return 0;
+ if (g_stat (_peakpath.c_str(), &statbuf)) {
+ if (errno != ENOENT) {
+ /* it exists in the peaks dir, but there is some kind of error */
+
+ error << string_compose(_("AudioSource: cannot stat peakfile \"%1\""), _peakpath) << endmsg;
+ return -1;
}
+ DEBUG_TRACE(DEBUG::Peaks, string_compose("Peakfile %1 does not exist\n", _peakpath));
+
_peaks_built = false;
} else {
- if (stat (peakpath.c_str(), &statbuf)) {
- if (errno != ENOENT) {
- /* it exists in the peaks dir, but there is some kind of error */
-
- error << string_compose(_("AudioSource: cannot stat peakfile \"%1\""), peakpath) << endmsg;
- return -1;
- }
- } else {
-
- /* we found it in the peaks dir */
- }
-
- if (statbuf.st_size == 0) {
+ /* we found it in the peaks dir, so check it out */
+
+ if (statbuf.st_size == 0 || (statbuf.st_size < (off_t) ((length(_timeline_position) / _FPP) * sizeof (PeakData)))) {
+ DEBUG_TRACE(DEBUG::Peaks, string_compose("Peakfile %1 is empty\n", _peakpath));
_peaks_built = false;
} else {
// Check if the audio file has changed since the peakfile was built.
- struct stat stat_file;
- int err = stat (audio_path.c_str(), &stat_file);
-
- if (!err && stat_file.st_mtime > statbuf.st_mtime){
- _peaks_built = false;
- } else {
+ GStatBuf stat_file;
+ int err = g_stat (audio_path.c_str(), &stat_file);
+
+ if (err) {
+
+ /* no audio path - nested source or we can't
+ read it or ... whatever, use the peakfile as-is.
+ */
+ DEBUG_TRACE(DEBUG::Peaks, string_compose("Error when calling stat on Peakfile %1\n", _peakpath));
+
_peaks_built = true;
+ _peak_byte_max = statbuf.st_size;
+
+ } else {
+
+ /* allow 6 seconds slop on checking peak vs. file times because of various
+ disk action "races"
+ */
+
+ if (stat_file.st_mtime > statbuf.st_mtime && (stat_file.st_mtime - statbuf.st_mtime > 6)) {
+ _peaks_built = false;
+ _peak_byte_max = 0;
+ } else {
+ _peaks_built = true;
+ _peak_byte_max = statbuf.st_size;
+ }
}
}
}
- if (!newfile && !_peaks_built && _build_missing_peakfiles && _build_peakfiles) {
+ if (!empty() && !_peaks_built && _build_missing_peakfiles && _build_peakfiles) {
build_peaks_from_scratch ();
- }
+ }
return 0;
}
-nframes_t
-AudioSource::read (Sample *dst, nframes_t start, nframes_t cnt) const
+samplecnt_t
+AudioSource::read (Sample *dst, samplepos_t start, samplecnt_t cnt, int /*channel*/) const
{
- Glib::Mutex::Lock lm (_lock);
+ assert (cnt >= 0);
+
+ Glib::Threads::Mutex::Lock lm (_lock);
return read_unlocked (dst, start, cnt);
}
-nframes_t
-AudioSource::write (Sample *dst, nframes_t cnt)
+samplecnt_t
+AudioSource::write (Sample *dst, samplecnt_t cnt)
{
- Glib::Mutex::Lock lm (_lock);
+ Glib::Threads::Mutex::Lock lm (_lock);
+ /* any write makes the file not removable */
+ _flags = Flag (_flags & ~Removable);
return write_unlocked (dst, cnt);
}
-int
-AudioSource::read_peaks (PeakData *peaks, nframes_t npeaks, nframes_t start, nframes_t cnt, double samples_per_visual_peak) const
+int
+AudioSource::read_peaks (PeakData *peaks, samplecnt_t npeaks, samplepos_t start, samplecnt_t cnt, double samples_per_visual_peak) const
+{
+ return read_peaks_with_fpp (peaks, npeaks, start, cnt, samples_per_visual_peak, _FPP);
+}
+
+/** @param peaks Buffer to write peak data.
+ * @param npeaks Number of peaks to write.
+ */
+
+int
+AudioSource::read_peaks_with_fpp (PeakData *peaks, samplecnt_t npeaks, samplepos_t start, samplecnt_t cnt,
+ double samples_per_visual_peak, samplecnt_t samples_per_file_peak) const
{
- Glib::Mutex::Lock lm (_lock);
+ Glib::Threads::Mutex::Lock lm (_lock);
double scale;
double expected_peaks;
PeakData::PeakDatum xmax;
PeakData::PeakDatum xmin;
int32_t to_read;
- uint32_t nread;
- nframes_t zero_fill = 0;
- int ret = -1;
- PeakData* staging = 0;
- Sample* raw_staging = 0;
- int peakfile = -1;
+#ifdef PLATFORM_WINDOWS
+ SYSTEM_INFO system_info;
+ GetSystemInfo (&system_info);
+ const int bufsize = system_info.dwAllocationGranularity;;
+#else
+ const int bufsize = sysconf(_SC_PAGESIZE);
+#endif
+ samplecnt_t read_npeaks = npeaks;
+ samplecnt_t zero_fill = 0;
+
+ GStatBuf statbuf;
+
+ expected_peaks = (cnt / (double) samples_per_file_peak);
+ if (g_stat (_peakpath.c_str(), &statbuf) != 0) {
+ error << string_compose (_("Cannot open peakfile @ %1 for size check (%2)"), _peakpath, strerror (errno)) << endmsg;
+ return -1;
+ }
+
+ if (!_captured_for.empty()) {
+
+ /* _captured_for is only set after a capture pass is
+ * complete. so we know that capturing is finished for this
+ * file, and now we can check actual size of the peakfile is at
+ * least large enough for all the data in the audio file. if it
+ * is too short, assume that a crash or other error truncated
+ * it, and rebuild it from scratch.
+ *
+ * XXX this may not work for destructive recording, but we
+ * might decided to get rid of that anyway.
+ *
+ */
+
+ const off_t expected_file_size = (_length / (double) samples_per_file_peak) * sizeof (PeakData);
+
+ if (statbuf.st_size < expected_file_size) {
+ warning << string_compose (_("peak file %1 is truncated from %2 to %3"), _peakpath, expected_file_size, statbuf.st_size) << endmsg;
+ lm.release(); // build_peaks_from_scratch() takes _lock
+ const_cast<AudioSource*>(this)->build_peaks_from_scratch ();
+ lm.acquire ();
+ if (g_stat (_peakpath.c_str(), &statbuf) != 0) {
+ error << string_compose (_("Cannot open peakfile @ %1 for size check (%2) after rebuild"), _peakpath, strerror (errno)) << endmsg;
+ }
+ if (statbuf.st_size < expected_file_size) {
+ fatal << "peak file is still truncated after rebuild" << endmsg;
+ /*NOTREACHED*/
+ }
+ }
+ }
+
+ ScopedFileDescriptor sfd (g_open (_peakpath.c_str(), O_RDONLY, 0444));
+
+ if (sfd < 0) {
+ error << string_compose (_("Cannot open peakfile @ %1 for reading (%2)"), _peakpath, strerror (errno)) << endmsg;
+ return -1;
+ }
- expected_peaks = (cnt / (double) frames_per_peak);
scale = npeaks/expected_peaks;
-#if 0
- cerr << "======>RP: npeaks = " << npeaks
- << " start = " << start
- << " cnt = " << cnt
- << " len = " << _length
- << " samples_per_visual_peak =" << samples_per_visual_peak
- << " expected was " << expected_peaks << " ... scale = " << scale
- << " PD ptr = " << peaks
- <<endl;
-
-#endif
+
+ DEBUG_TRACE (DEBUG::Peaks, string_compose (" ======>RP: npeaks = %1 start = %2 cnt = %3 len = %4 samples_per_visual_peak = %5 expected was %6 ... scale = %7 PD ptr = %8\n"
+ , npeaks, start, cnt, _length, samples_per_visual_peak, expected_peaks, scale, peaks));
/* fix for near-end-of-file conditions */
- if (cnt > _length - start) {
- // cerr << "too close to end @ " << _length << " given " << start << " + " << cnt << endl;
- cnt = _length - start;
- nframes_t old = npeaks;
- npeaks = min ((nframes_t) floor (cnt / samples_per_visual_peak), npeaks);
- zero_fill = old - npeaks;
+ if (cnt + start > _length) {
+ // cerr << "too close to end @ " << _length << " given " << start << " + " << cnt << " (" << _length - start << ")" << endl;
+ cnt = std::max ((samplecnt_t)0, _length - start);
+ read_npeaks = min ((samplecnt_t) floor (cnt / samples_per_visual_peak), npeaks);
+ zero_fill = npeaks - read_npeaks;
+ expected_peaks = (cnt / (double) samples_per_file_peak);
+ scale = npeaks/expected_peaks;
}
- // cerr << "actual npeaks = " << npeaks << " zf = " << zero_fill << endl;
-
+ assert (cnt >= 0);
+
+ // cerr << "actual npeaks = " << read_npeaks << " zf = " << zero_fill << endl;
+
if (npeaks == cnt) {
- cerr << "RAW DATA\n";
-
+ DEBUG_TRACE (DEBUG::Peaks, "RAW DATA\n");
+
/* no scaling at all, just get the sample data and duplicate it for
both max and min peak values.
*/
- Sample* raw_staging = new Sample[cnt];
-
- if (read_unlocked (raw_staging, start, cnt) != cnt) {
+ boost::scoped_array<Sample> raw_staging(new Sample[cnt]);
+
+ if (read_unlocked (raw_staging.get(), start, cnt) != cnt) {
error << _("cannot read sample data for unscaled peak computation") << endmsg;
return -1;
}
- for (nframes_t i = 0; i < npeaks; ++i) {
+ for (samplecnt_t i = 0; i < npeaks; ++i) {
peaks[i].max = raw_staging[i];
peaks[i].min = raw_staging[i];
}
- delete [] raw_staging;
return 0;
}
if (scale == 1.0) {
+ off_t first_peak_byte = (start / samples_per_file_peak) * sizeof (PeakData);
+ size_t bytes_to_read = sizeof (PeakData) * read_npeaks;
+ /* open, read, close */
- off_t first_peak_byte = (start / frames_per_peak) * sizeof (PeakData);
+ DEBUG_TRACE (DEBUG::Peaks, "DIRECT PEAKS\n");
+
+ off_t map_off = first_peak_byte;
+ off_t read_map_off = map_off & ~(bufsize - 1);
+ off_t map_delta = map_off - read_map_off;
+ size_t map_length = bytes_to_read + map_delta;
+
+ if (_first_run || (_last_scale != samples_per_visual_peak) || (_last_map_off != map_off) || (_last_raw_map_length < bytes_to_read)) {
+ peak_cache.reset (new PeakData[npeaks]);
+ char* addr;
+#ifdef PLATFORM_WINDOWS
+ HANDLE file_handle = (HANDLE) _get_osfhandle(int(sfd));
+ HANDLE map_handle;
+ LPVOID view_handle;
+ bool err_flag;
+
+ map_handle = CreateFileMapping(file_handle, NULL, PAGE_READONLY, 0, 0, NULL);
+ if (map_handle == NULL) {
+ error << string_compose (_("map failed - could not create file mapping for peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
- /* open, read, close */
+ view_handle = MapViewOfFile(map_handle, FILE_MAP_READ, 0, read_map_off, map_length);
+ if (view_handle == NULL) {
+ error << string_compose (_("map failed - could not map peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
- if ((peakfile = ::open (peakpath.c_str(), O_RDWR|O_CREAT, 0664)) < 0) {
- error << string_compose(_("AudioSource: cannot open peakpath \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
- return -1;
- }
+ addr = (char*) view_handle;
- // cerr << "DIRECT PEAKS\n";
-
- nread = ::pread (peakfile, peaks, sizeof (PeakData)* npeaks, first_peak_byte);
- close (peakfile);
-
- if (nread != sizeof (PeakData) * npeaks) {
- cerr << "AudioSource["
- << _name
- << "]: cannot read peaks from peakfile! (read only "
- << nread
- << " not "
- << npeaks
- << "at sample "
- << start
- << " = byte "
- << first_peak_byte
- << ')'
- << endl;
- return -1;
- }
+ memcpy ((void*)peak_cache.get(), (void*)(addr + map_delta), bytes_to_read);
- if (zero_fill) {
- memset (&peaks[npeaks], 0, sizeof (PeakData) * zero_fill);
+ err_flag = UnmapViewOfFile (view_handle);
+ err_flag = CloseHandle(map_handle);
+ if(!err_flag) {
+ error << string_compose (_("unmap failed - could not unmap peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
+#else
+ addr = (char*) mmap (0, map_length, PROT_READ, MAP_PRIVATE, sfd, read_map_off);
+ if (addr == MAP_FAILED) {
+ error << string_compose (_("map failed - could not mmap peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
+
+ memcpy ((void*)peak_cache.get(), (void*)(addr + map_delta), bytes_to_read);
+ munmap (addr, map_length);
+#endif
+ if (zero_fill) {
+ memset (&peak_cache[read_npeaks], 0, sizeof (PeakData) * zero_fill);
+ }
+
+ _first_run = false;
+ _last_scale = samples_per_visual_peak;
+ _last_map_off = map_off;
+ _last_raw_map_length = bytes_to_read;
}
+ memcpy ((void*)peaks, (void*)peak_cache.get(), npeaks * sizeof(PeakData));
+
return 0;
}
-
- nframes_t tnp;
-
if (scale < 1.0) {
- // cerr << "DOWNSAMPLE\n";
+ DEBUG_TRACE (DEBUG::Peaks, "DOWNSAMPLE\n");
/* the caller wants:
- - more frames-per-peak (lower resolution) than the peakfile, or to put it another way,
+ - more samples-per-peak (lower resolution) than the peakfile, or to put it another way,
- less peaks than the peakfile holds for the same range
So, read a block into a staging area, and then downsample from there.
- to avoid confusion, I'll refer to the requested peaks as visual_peaks and the peakfile peaks as stored_peaks
+ to avoid confusion, I'll refer to the requested peaks as visual_peaks and the peakfile peaks as stored_peaks
*/
- const uint32_t chunksize = (uint32_t) min (expected_peaks, 4096.0);
-
- staging = new PeakData[chunksize];
-
- /* compute the rounded up frame position */
-
- nframes_t current_frame = start;
- nframes_t current_stored_peak = (nframes_t) ceil (current_frame / (double) frames_per_peak);
- uint32_t next_visual_peak = (uint32_t) ceil (current_frame / samples_per_visual_peak);
- double next_visual_peak_frame = next_visual_peak * samples_per_visual_peak;
- uint32_t stored_peak_before_next_visual_peak = (nframes_t) next_visual_peak_frame / frames_per_peak;
- uint32_t nvisual_peaks = 0;
- uint32_t stored_peaks_read = 0;
- uint32_t i = 0;
+ const samplecnt_t chunksize = (samplecnt_t) expected_peaks; // we read all the peaks we need in one hit.
+
+ /* compute the rounded up sample position */
+
+ samplepos_t current_stored_peak = (samplepos_t) ceil (start / (double) samples_per_file_peak);
+ samplepos_t next_visual_peak = (samplepos_t) ceil (start / samples_per_visual_peak);
+ double next_visual_peak_sample = next_visual_peak * samples_per_visual_peak;
+ samplepos_t stored_peak_before_next_visual_peak = (samplepos_t) next_visual_peak_sample / samples_per_file_peak;
+ samplecnt_t nvisual_peaks = 0;
+ uint32_t i = 0;
/* handle the case where the initial visual peak is on a pixel boundary */
/* open ... close during out: handling */
- if ((peakfile = ::open (peakpath.c_str(), O_RDWR|O_CREAT, 0664)) < 0) {
- error << string_compose(_("AudioSource: cannot open peakpath \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
- return 0;
- }
+ off_t map_off = (uint32_t) (ceil (start / (double) samples_per_file_peak)) * sizeof(PeakData);
+ off_t read_map_off = map_off & ~(bufsize - 1);
+ off_t map_delta = map_off - read_map_off;
+ size_t raw_map_length = chunksize * sizeof(PeakData);
+ size_t map_length = (chunksize * sizeof(PeakData)) + map_delta;
+
+ if (_first_run || (_last_scale != samples_per_visual_peak) || (_last_map_off != map_off) || (_last_raw_map_length < raw_map_length)) {
+ peak_cache.reset (new PeakData[npeaks]);
+ boost::scoped_array<PeakData> staging (new PeakData[chunksize]);
+
+ char* addr;
+#ifdef PLATFORM_WINDOWS
+ HANDLE file_handle = (HANDLE) _get_osfhandle(int(sfd));
+ HANDLE map_handle;
+ LPVOID view_handle;
+ bool err_flag;
+
+ map_handle = CreateFileMapping(file_handle, NULL, PAGE_READONLY, 0, 0, NULL);
+ if (map_handle == NULL) {
+ error << string_compose (_("map failed - could not create file mapping for peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
- while (nvisual_peaks < npeaks) {
-
- if (i == stored_peaks_read) {
-
- uint32_t start_byte = current_stored_peak * sizeof(PeakData);
- tnp = min ((_length/frames_per_peak - current_stored_peak), (nframes_t) expected_peaks);
- to_read = min (chunksize, tnp);
-
- off_t fend = lseek (peakfile, 0, SEEK_END);
-
- if ((nread = ::pread (peakfile, staging, sizeof (PeakData) * to_read, start_byte))
- != sizeof (PeakData) * to_read) {
- cerr << "AudioSource["
- << _name
- << "]: cannot read peak data from peakfile ("
- << (nread / sizeof(PeakData))
- << " peaks instead of "
- << to_read
- << ") ("
- << strerror (errno)
- << ')'
- << " at start_byte = " << start_byte
- << " _length = " << _length << " versus len = " << fend
- << " expected maxpeaks = " << (_length - current_frame)/frames_per_peak
- << " npeaks was " << npeaks
- << endl;
- goto out;
- }
+ view_handle = MapViewOfFile(map_handle, FILE_MAP_READ, 0, read_map_off, map_length);
+ if (view_handle == NULL) {
+ error << string_compose (_("map failed - could not map peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
- i = 0;
- stored_peaks_read = nread / sizeof(PeakData);
+ addr = (char *) view_handle;
+
+ memcpy ((void*)staging.get(), (void*)(addr + map_delta), raw_map_length);
+
+ err_flag = UnmapViewOfFile (view_handle);
+ err_flag = CloseHandle(map_handle);
+ if(!err_flag) {
+ error << string_compose (_("unmap failed - could not unmap peakfile %1."), _peakpath) << endmsg;
+ return -1;
+ }
+#else
+ addr = (char*) mmap (0, map_length, PROT_READ, MAP_PRIVATE, sfd, read_map_off);
+ if (addr == MAP_FAILED) {
+ error << string_compose (_("map failed - could not mmap peakfile %1."), _peakpath) << endmsg;
+ return -1;
}
- xmax = -1.0;
- xmin = 1.0;
+ memcpy ((void*)staging.get(), (void*)(addr + map_delta), raw_map_length);
+ munmap (addr, map_length);
+#endif
+ while (nvisual_peaks < read_npeaks) {
- while ((i < stored_peaks_read) && (current_stored_peak <= stored_peak_before_next_visual_peak)) {
+ xmax = -1.0;
+ xmin = 1.0;
+
+ while ((current_stored_peak <= stored_peak_before_next_visual_peak) && (i < chunksize)) {
- xmax = max (xmax, staging[i].max);
- xmin = min (xmin, staging[i].min);
- ++i;
- ++current_stored_peak;
- --expected_peaks;
+ xmax = max (xmax, staging[i].max);
+ xmin = min (xmin, staging[i].min);
+ ++i;
+ ++current_stored_peak;
+ }
+
+ peak_cache[nvisual_peaks].max = xmax;
+ peak_cache[nvisual_peaks].min = xmin;
+ ++nvisual_peaks;
+ next_visual_peak_sample = min ((double) start + cnt, (next_visual_peak_sample + samples_per_visual_peak));
+ stored_peak_before_next_visual_peak = (uint32_t) next_visual_peak_sample / samples_per_file_peak;
}
- peaks[nvisual_peaks].max = xmax;
- peaks[nvisual_peaks].min = xmin;
- ++nvisual_peaks;
- ++next_visual_peak;
+ if (zero_fill) {
+ cerr << "Zero fill end of peaks (@ " << read_npeaks << " with " << zero_fill << ")" << endl;
+ memset (&peak_cache[read_npeaks], 0, sizeof (PeakData) * zero_fill);
+ }
- //next_visual_peak_frame = min ((next_visual_peak * samples_per_visual_peak), (next_visual_peak_frame+samples_per_visual_peak) );
- next_visual_peak_frame = min ((double) start+cnt, (next_visual_peak_frame+samples_per_visual_peak) );
- stored_peak_before_next_visual_peak = (uint32_t) next_visual_peak_frame / frames_per_peak;
+ _first_run = false;
+ _last_scale = samples_per_visual_peak;
+ _last_map_off = map_off;
+ _last_raw_map_length = raw_map_length;
}
- if (zero_fill) {
- memset (&peaks[npeaks], 0, sizeof (PeakData) * zero_fill);
- }
-
- ret = 0;
+ memcpy ((void*)peaks, (void*)peak_cache.get(), npeaks * sizeof(PeakData));
} else {
-
- // cerr << "UPSAMPLE\n";
+ DEBUG_TRACE (DEBUG::Peaks, "UPSAMPLE\n");
- /* the caller wants
+ /* the caller wants
- - less frames-per-peak (more resolution)
+ - less samples-per-peak (more resolution)
- more peaks than stored in the Peakfile
So, fetch data from the raw source, and generate peak
data on the fly.
*/
- nframes_t frames_read = 0;
- nframes_t current_frame = start;
- nframes_t i = 0;
- nframes_t nvisual_peaks = 0;
- nframes_t chunksize = (nframes_t) min (cnt, (nframes_t) 4096);
- raw_staging = new Sample[chunksize];
-
- nframes_t frame_pos = start;
- double pixel_pos = floor (frame_pos / samples_per_visual_peak);
- double next_pixel_pos = ceil (frame_pos / samples_per_visual_peak);
- double pixels_per_frame = 1.0 / samples_per_visual_peak;
+ samplecnt_t samples_read = 0;
+ samplepos_t current_sample = start;
+ samplecnt_t i = 0;
+ samplecnt_t nvisual_peaks = 0;
+ samplecnt_t chunksize = (samplecnt_t) min (cnt, (samplecnt_t) 4096);
+ boost::scoped_array<Sample> raw_staging(new Sample[chunksize]);
+
+ samplepos_t sample_pos = start;
+ double pixel_pos = floor (sample_pos / samples_per_visual_peak);
+ double next_pixel_pos = ceil (sample_pos / samples_per_visual_peak);
+ double pixels_per_sample = 1.0 / samples_per_visual_peak;
xmin = 1.0;
xmax = -1.0;
- while (nvisual_peaks < npeaks) {
+ while (nvisual_peaks < read_npeaks) {
- if (i == frames_read) {
-
- to_read = min (chunksize, (_length - current_frame));
+ if (i == samples_read) {
- if ((frames_read = read_unlocked (raw_staging, current_frame, to_read)) == 0) {
- error << string_compose(_("AudioSource[%1]: peak read - cannot read %2 samples at offset %3")
- , _name, to_read, current_frame)
- << endmsg;
- goto out;
- }
+ to_read = min (chunksize, (samplecnt_t)(_length - current_sample));
+
+ if (current_sample >= _length) {
+
+ /* hmm, error condition - we've reached the end of the file
+ without generating all the peak data. cook up a zero-filled
+ data buffer and then use it. this is simpler than
+ adjusting zero_fill and read_npeaks and then breaking out of
+ this loop early
+ */
+
+ memset (raw_staging.get(), 0, sizeof (Sample) * chunksize);
+
+ } else {
+
+ to_read = min (chunksize, (_length - current_sample));
+
+
+ if ((samples_read = read_unlocked (raw_staging.get(), current_sample, to_read)) == 0) {
+ error << string_compose(_("AudioSource[%1]: peak read - cannot read %2 samples at offset %3 of %4 (%5)"),
+ _name, to_read, current_sample, _length, strerror (errno))
+ << endmsg;
+ return -1;
+ }
+ }
i = 0;
}
-
+
xmax = max (xmax, raw_staging[i]);
xmin = min (xmin, raw_staging[i]);
++i;
- ++current_frame;
- pixel_pos += pixels_per_frame;
+ ++current_sample;
+ pixel_pos += pixels_per_sample;
if (pixel_pos >= next_pixel_pos) {
next_pixel_pos = ceil (pixel_pos + 0.5);
}
}
-
+
if (zero_fill) {
- memset (&peaks[npeaks], 0, sizeof (PeakData) * zero_fill);
+ memset (&peaks[read_npeaks], 0, sizeof (PeakData) * zero_fill);
}
-
- ret = 0;
}
- out:
- if (peakfile >= 0) {
- close (peakfile);
- }
+ DEBUG_TRACE (DEBUG::Peaks, "READPEAKS DONE\n");
+ return 0;
+}
- if (staging) {
- delete [] staging;
- }
+int
+AudioSource::build_peaks_from_scratch ()
+{
+ const samplecnt_t bufsize = 65536; // 256kB per disk read for mono data is about ideal
+
+ DEBUG_TRACE (DEBUG::Peaks, "Building peaks from scratch\n");
+
+ int ret = -1;
+
+ {
+ /* hold lock while building peaks */
+
+ Glib::Threads::Mutex::Lock lp (_lock);
+
+ if (prepare_for_peakfile_writes ()) {
+ goto out;
+ }
- if (raw_staging) {
- delete [] raw_staging;
+ samplecnt_t current_sample = 0;
+ samplecnt_t cnt = _length;
+
+ _peaks_built = false;
+ boost::scoped_array<Sample> buf(new Sample[bufsize]);
+
+ while (cnt) {
+
+ samplecnt_t samples_to_read = min (bufsize, cnt);
+ samplecnt_t samples_read;
+
+ if ((samples_read = read_unlocked (buf.get(), current_sample, samples_to_read)) != samples_to_read) {
+ error << string_compose(_("%1: could not write read raw data for peak computation (%2)"), _name, strerror (errno)) << endmsg;
+ done_with_peakfile_writes (false);
+ goto out;
+ }
+
+ lp.release(); // allow butler to refill buffers
+
+ if (_session.deletion_in_progress() || _session.peaks_cleanup_in_progres()) {
+ cerr << "peak file creation interrupted: " << _name << endmsg;
+ lp.acquire();
+ done_with_peakfile_writes (false);
+ goto out;
+ }
+
+ if (compute_and_write_peaks (buf.get(), current_sample, samples_read, true, false, _FPP)) {
+ break;
+ }
+
+ current_sample += samples_read;
+ cnt -= samples_read;
+
+ lp.acquire();
+ }
+
+ if (cnt == 0) {
+ /* success */
+ truncate_peakfile();
+ }
+
+ done_with_peakfile_writes ((cnt == 0));
+ if (cnt == 0) {
+ ret = 0;
+ }
+ }
+
+ out:
+ if (ret) {
+ DEBUG_TRACE (DEBUG::Peaks, string_compose("Could not write peak data, attempting to remove peakfile %1\n", _peakpath));
+ ::g_unlink (_peakpath.c_str());
}
return ret;
}
-#undef DEBUG_PEAK_BUILD
-
int
-AudioSource::build_peaks ()
+AudioSource::close_peakfile ()
{
- vector<PeakBuildRecord*> built;
- int status = -1;
- bool pr_signal = false;
- list<PeakBuildRecord*> copy;
+ Glib::Threads::Mutex::Lock lp (_lock);
+ if (_peakfile_fd >= 0) {
+ close (_peakfile_fd);
+ _peakfile_fd = -1;
+ }
+ if (!_peakpath.empty()) {
+ ::g_unlink (_peakpath.c_str());
+ }
+ _peaks_built = false;
+ return 0;
+}
- {
- Glib::Mutex::Lock lm (_lock);
- copy = pending_peak_builds;
- pending_peak_builds.clear ();
- }
-
-#ifdef DEBUG_PEAK_BUILD
- cerr << "build peaks with " << copy.size() << " requests pending\n";
-#endif
-
- for (list<PeakBuildRecord *>::iterator i = copy.begin(); i != copy.end(); ++i) {
-
- if ((status = do_build_peak ((*i)->frame, (*i)->cnt)) != 0) {
- unlink (peakpath.c_str());
- break;
- }
- built.push_back (new PeakBuildRecord (*(*i)));
- delete *i;
+int
+AudioSource::prepare_for_peakfile_writes ()
+{
+ if (_session.deletion_in_progress() || _session.peaks_cleanup_in_progres()) {
+ return -1;
}
- {
- Glib::Mutex::Lock lm (_lock);
+ if ((_peakfile_fd = g_open (_peakpath.c_str(), O_CREAT|O_RDWR, 0664)) < 0) {
+ error << string_compose(_("AudioSource: cannot open _peakpath (c) \"%1\" (%2)"), _peakpath, strerror (errno)) << endmsg;
+ return -1;
+ }
+ return 0;
+}
- if (status == 0) {
- _peaks_built = true;
-
- if (next_peak_clear_should_notify) {
- next_peak_clear_should_notify = false;
- pr_signal = true;
- }
+void
+AudioSource::done_with_peakfile_writes (bool done)
+{
+ if (_session.deletion_in_progress() || _session.peaks_cleanup_in_progres()) {
+ if (_peakfile_fd) {
+ close (_peakfile_fd);
+ _peakfile_fd = -1;
}
+ return;
}
- if (status == 0) {
- for (vector<PeakBuildRecord *>::iterator i = built.begin(); i != built.end(); ++i) {
- PeakRangeReady ((*i)->frame, (*i)->cnt); /* EMIT SIGNAL */
- delete *i;
- }
+ if (peak_leftover_cnt) {
+ compute_and_write_peaks (0, 0, 0, true, false, _FPP);
+ }
- if (pr_signal) {
- PeaksReady (); /* EMIT SIGNAL */
- }
+ if (done) {
+ Glib::Threads::Mutex::Lock lm (_peaks_ready_lock);
+ _peaks_built = true;
+ PeaksReady (); /* EMIT SIGNAL */
}
- return status;
+ close (_peakfile_fd);
+ _peakfile_fd = -1;
}
+/** @param first_sample Offset from the source start of the first sample to
+ * process. _lock MUST be held by caller.
+*/
int
-AudioSource::do_build_peak (nframes_t first_frame, nframes_t cnt)
+AudioSource::compute_and_write_peaks (Sample* buf, samplecnt_t first_sample, samplecnt_t cnt,
+ bool force, bool intermediate_peaks_ready)
{
- nframes_t current_frame;
- Sample buf[frames_per_peak];
- Sample xmin, xmax;
- uint32_t peaki;
- PeakData* peakbuf;
- nframes_t frames_read;
- nframes_t frames_to_read;
+ return compute_and_write_peaks (buf, first_sample, cnt, force, intermediate_peaks_ready, _FPP);
+}
+
+int
+AudioSource::compute_and_write_peaks (Sample* buf, samplecnt_t first_sample, samplecnt_t cnt,
+ bool force, bool intermediate_peaks_ready, samplecnt_t fpp)
+{
+ samplecnt_t to_do;
+ uint32_t peaks_computed;
+ samplepos_t current_sample;
+ samplecnt_t samples_done;
+ const size_t blocksize = (128 * 1024);
off_t first_peak_byte;
- int peakfile = -1;
- int ret = -1;
+ boost::scoped_array<Sample> buf2;
-#ifdef DEBUG_PEAK_BUILD
- cerr << pthread_self() << ": " << _name << ": building peaks for " << first_frame << " to " << first_frame + cnt - 1 << endl;
-#endif
+ if (_peakfile_fd < 0) {
+ if (prepare_for_peakfile_writes ()) {
+ return -1;
+ }
+ }
- first_peak_byte = (first_frame / frames_per_peak) * sizeof (PeakData);
+ restart:
+ if (peak_leftover_cnt) {
-#ifdef DEBUG_PEAK_BUILD
- cerr << "seeking to " << first_peak_byte << " before writing new peak data\n";
-#endif
+ if (first_sample != peak_leftover_sample + peak_leftover_cnt) {
- current_frame = first_frame;
- peakbuf = new PeakData[(cnt/frames_per_peak)+1];
- peaki = 0;
+ /* uh-oh, ::seek() since the last ::compute_and_write_peaks(),
+ and we have leftovers. flush a single peak (since the leftovers
+ never represent more than that, and restart.
+ */
- if ((peakfile = ::open (peakpath.c_str(), O_RDWR|O_CREAT, 0664)) < 0) {
- error << string_compose(_("AudioSource: cannot open peakpath \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
- return -1;
+ PeakData x;
+
+ x.min = peak_leftovers[0];
+ x.max = peak_leftovers[0];
+
+ off_t byte = (peak_leftover_sample / fpp) * sizeof (PeakData);
+
+ off_t offset = lseek (_peakfile_fd, byte, SEEK_SET);
+
+ if (offset != byte) {
+ error << string_compose(_("%1: could not seek in peak file data (%2)"), _name, strerror (errno)) << endmsg;
+ return -1;
+ }
+
+ if (::write (_peakfile_fd, &x, sizeof (PeakData)) != sizeof (PeakData)) {
+ error << string_compose(_("%1: could not write peak file data (%2)"), _name, strerror (errno)) << endmsg;
+ return -1;
+ }
+
+ _peak_byte_max = max (_peak_byte_max, (off_t) (byte + sizeof(PeakData)));
+
+ {
+ Glib::Threads::Mutex::Lock lm (_peaks_ready_lock);
+ PeakRangeReady (peak_leftover_sample, peak_leftover_cnt); /* EMIT SIGNAL */
+ if (intermediate_peaks_ready) {
+ PeaksReady (); /* EMIT SIGNAL */
+ }
+ }
+
+ /* left overs are done */
+
+ peak_leftover_cnt = 0;
+ goto restart;
+ }
+
+ /* else ... had leftovers, but they immediately preceed the new data, so just
+ merge them and compute.
+ */
+
+ /* make a new contiguous buffer containing leftovers and the new stuff */
+
+ to_do = cnt + peak_leftover_cnt;
+ buf2.reset(new Sample[to_do]);
+
+ /* the remnants */
+ memcpy (buf2.get(), peak_leftovers, peak_leftover_cnt * sizeof (Sample));
+
+ /* the new stuff */
+ if (buf && cnt > 0) {
+ memcpy (buf2.get()+peak_leftover_cnt, buf, cnt * sizeof (Sample));
+ }
+
+ /* no more leftovers */
+ peak_leftover_cnt = 0;
+
+ /* use the temporary buffer */
+ buf = buf2.get();
+
+ /* make sure that when we write into the peakfile, we startup where we left off */
+
+ first_sample = peak_leftover_sample;
+
+ } else {
+ to_do = cnt;
}
-
- while (cnt) {
- frames_to_read = min (frames_per_peak, cnt);
+ boost::scoped_array<PeakData> peakbuf(new PeakData[(to_do/fpp)+1]);
+ peaks_computed = 0;
+ current_sample = first_sample;
+ samples_done = 0;
- /* lock for every read */
+ while (to_do) {
- if ((frames_read = read (buf, current_frame, frames_to_read)) != frames_to_read) {
- error << string_compose(_("%1: could not write read raw data for peak computation (%2)"), _name, strerror (errno)) << endmsg;
- goto out;
+ /* if some samples were passed in (i.e. we're not flushing leftovers)
+ and there are less than fpp to do, save them till
+ next time
+ */
+
+ if (force && (to_do < fpp)) {
+ /* keep the left overs around for next time */
+
+ if (peak_leftover_size < to_do) {
+ delete [] peak_leftovers;
+ peak_leftovers = new Sample[to_do];
+ peak_leftover_size = to_do;
+ }
+ memcpy (peak_leftovers, buf, to_do * sizeof (Sample));
+ peak_leftover_cnt = to_do;
+ peak_leftover_sample = current_sample;
+
+ /* done for now */
+
+ break;
}
- xmin = buf[0];
- xmax = buf[0];
+ samplecnt_t this_time = min (fpp, to_do);
+
+ peakbuf[peaks_computed].max = buf[0];
+ peakbuf[peaks_computed].min = buf[0];
+
+ ARDOUR::find_peaks (buf+1, this_time-1, &peakbuf[peaks_computed].min, &peakbuf[peaks_computed].max);
+
+ peaks_computed++;
+ buf += this_time;
+ to_do -= this_time;
+ samples_done += this_time;
+ current_sample += this_time;
+ }
- for (nframes_t n = 1; n < frames_read; ++n) {
- xmax = max (xmax, buf[n]);
- xmin = min (xmin, buf[n]);
+ first_peak_byte = (first_sample / fpp) * sizeof (PeakData);
-// if (current_frame < frames_read) {
-// cerr << "sample = " << buf[n] << " max = " << xmax << " min = " << xmin << " max of 2 = " << max (xmax, buf[n]) << endl;
-// }
+ if (can_truncate_peaks()) {
+
+ /* on some filesystems (ext3, at least) this helps to reduce fragmentation of
+ the peakfiles. its not guaranteed to do so, and even on ext3 (as of december 2006)
+ it does not cause single-extent allocation even for peakfiles of
+ less than BLOCKSIZE bytes. only call ftruncate if we'll make the file larger.
+ */
+
+ off_t endpos = lseek (_peakfile_fd, 0, SEEK_END);
+ off_t target_length = blocksize * ((first_peak_byte + blocksize + 1) / blocksize);
+
+ if (endpos < target_length) {
+ DEBUG_TRACE(DEBUG::Peaks, string_compose ("Truncating Peakfile %1\n", _peakpath));
+ if (ftruncate (_peakfile_fd, target_length)) {
+ /* error doesn't actually matter so continue on without testing */
+ }
}
+ }
+
- peakbuf[peaki].max = xmax;
- peakbuf[peaki].min = xmin;
- peaki++;
+ off_t offset = lseek(_peakfile_fd, first_peak_byte, SEEK_SET);
- current_frame += frames_read;
- cnt -= frames_read;
+ if (offset != first_peak_byte) {
+ error << string_compose(_("%1: could not seek in peak file data (%2)"), _name, strerror (errno)) << endmsg;
+ return -1;
}
- if (::pwrite (peakfile, peakbuf, sizeof (PeakData) * peaki, first_peak_byte) != (ssize_t) (sizeof (PeakData) * peaki)) {
+ ssize_t bytes_to_write = sizeof (PeakData) * peaks_computed;
+
+ ssize_t bytes_written = ::write (_peakfile_fd, peakbuf.get(), bytes_to_write);
+
+ if (bytes_written != bytes_to_write) {
error << string_compose(_("%1: could not write peak file data (%2)"), _name, strerror (errno)) << endmsg;
- goto out;
+ return -1;
}
- ret = 0;
+ _peak_byte_max = max (_peak_byte_max, (off_t) (first_peak_byte + bytes_to_write));
- out:
- delete [] peakbuf;
- if (peakfile >= 0) {
- close (peakfile);
+ if (samples_done) {
+ Glib::Threads::Mutex::Lock lm (_peaks_ready_lock);
+ PeakRangeReady (first_sample, samples_done); /* EMIT SIGNAL */
+ if (intermediate_peaks_ready) {
+ PeaksReady (); /* EMIT SIGNAL */
+ }
}
- return ret;
+
+ return 0;
}
void
-AudioSource::build_peaks_from_scratch ()
+AudioSource::truncate_peakfile ()
{
- Glib::Mutex::Lock lp (_lock);
+ if (_peakfile_fd < 0) {
+ error << string_compose (_("programming error: %1"), "AudioSource::truncate_peakfile() called without open peakfile descriptor")
+ << endmsg;
+ return;
+ }
- next_peak_clear_should_notify = true;
- pending_peak_builds.push_back (new PeakBuildRecord (0, _length));
- queue_for_peaks (this);
-}
+ /* truncate the peakfile down to its natural length if necessary */
-bool
-AudioSource::file_changed (string path)
-{
- struct stat stat_file;
- struct stat stat_peak;
-
- int e1 = stat (path.c_str(), &stat_file);
- int e2 = stat (peak_path(path).c_str(), &stat_peak);
-
- if (!e1 && !e2 && stat_file.st_mtime > stat_peak.st_mtime){
- return true;
- } else {
- return false;
+ off_t end = lseek (_peakfile_fd, 0, SEEK_END);
+
+ if (end > _peak_byte_max) {
+ DEBUG_TRACE(DEBUG::Peaks, string_compose ("Truncating Peakfile %1\n", _peakpath));
+ if (ftruncate (_peakfile_fd, _peak_byte_max)) {
+ error << string_compose (_("could not truncate peakfile %1 to %2 (error: %3)"),
+ _peakpath, _peak_byte_max, errno) << endmsg;
+ }
}
}
-nframes_t
+samplecnt_t
AudioSource::available_peaks (double zoom_factor) const
{
- int peakfile;
- off_t end;
+ if (zoom_factor < _FPP) {
+ return length(_timeline_position); // peak data will come from the audio file
+ }
+
+ /* peak data comes from peakfile, but the filesize might not represent
+ the valid data due to ftruncate optimizations, so use _peak_byte_max state.
+ XXX - there might be some atomicity issues here, we should probably add a lock,
+ but _peak_byte_max only monotonically increases after initialization.
+ */
- if (zoom_factor < frames_per_peak) {
- return length(); // peak data will come from the audio file
- }
-
- /* peak data comes from peakfile */
+ off_t end = _peak_byte_max;
- if ((peakfile = ::open (peakpath.c_str(), O_RDONLY)) < 0) {
- error << string_compose(_("AudioSource: cannot open peakpath \"%1\" (%2)"), peakpath, strerror (errno)) << endmsg;
- return 0;
- }
+ return (end/sizeof(PeakData)) * _FPP;
+}
+
+void
+AudioSource::mark_streaming_write_completed (const Lock& lock)
+{
+ Glib::Threads::Mutex::Lock lm (_peaks_ready_lock);
- {
- Glib::Mutex::Lock lm (_lock);
- end = lseek (peakfile, 0, SEEK_END);
+ if (_peaks_built) {
+ PeaksReady (); /* EMIT SIGNAL */
}
+}
+
+void
+AudioSource::allocate_working_buffers (samplecnt_t framerate)
+{
+ Glib::Threads::Mutex::Lock lm (_level_buffer_lock);
- close (peakfile);
- return (end/sizeof(PeakData)) * frames_per_peak;
+ /* Note: we don't need any buffers allocated until
+ a level 1 audiosource is created, at which
+ time we'll call ::ensure_buffers_for_level()
+ with the right value and do the right thing.
+ */
+
+ if (!_mixdown_buffers.empty()) {
+ ensure_buffers_for_level_locked ( _mixdown_buffers.size(), framerate);
+ }
}
void
-AudioSource::update_length (nframes_t pos, nframes_t cnt)
+AudioSource::ensure_buffers_for_level (uint32_t level, samplecnt_t sample_rate)
{
- if (pos + cnt > _length) {
- _length = pos+cnt;
- }
+ Glib::Threads::Mutex::Lock lm (_level_buffer_lock);
+ ensure_buffers_for_level_locked (level, sample_rate);
}
+void
+AudioSource::ensure_buffers_for_level_locked (uint32_t level, samplecnt_t sample_rate)
+{
+ samplecnt_t nframes = (samplecnt_t) floor (Config->get_audio_playback_buffer_seconds() * sample_rate);
+
+ /* this may be called because either "level" or "sample_rate" have
+ * changed. and it may be called with "level" smaller than the current
+ * number of buffers, because a new compound region has been created at
+ * a more shallow level than the deepest one we currently have.
+ */
+
+ uint32_t limit = max ((size_t) level, _mixdown_buffers.size());
+
+ _mixdown_buffers.clear ();
+ _gain_buffers.clear ();
+
+ for (uint32_t n = 0; n < limit; ++n) {
+ _mixdown_buffers.push_back (boost::shared_array<Sample> (new Sample[nframes]));
+ _gain_buffers.push_back (boost::shared_array<gain_t> (new gain_t[nframes]));
+ }
+}
projects / ardour.git / blobdiff