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Diffstat (limited to 'libs/ardour/diskstream.cc')
| -rw-r--r-- | libs/ardour/diskstream.cc | 2338 |
1 files changed, 2338 insertions, 0 deletions
diff --git a/libs/ardour/diskstream.cc b/libs/ardour/diskstream.cc new file mode 100644 index 0000000000..476c77cbec --- /dev/null +++ b/libs/ardour/diskstream.cc @@ -0,0 +1,2338 @@ +/* + Copyright (C) 2000-2003 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. + + $Id$ +*/ + +#include <fstream> +#include <cstdio> +#include <unistd.h> +#include <cmath> +#include <cerrno> +#include <string> +#include <climits> +#include <fcntl.h> +#include <cstdlib> +#include <ctime> +#include <sys/stat.h> +#include <sys/mman.h> + +#include <pbd/error.h> +#include <pbd/basename.h> +#include <pbd/lockmonitor.h> +#include <pbd/xml++.h> + +#include <ardour/ardour.h> +#include <ardour/audioengine.h> +#include <ardour/diskstream.h> +#include <ardour/utils.h> +#include <ardour/configuration.h> +#include <ardour/filesource.h> +#include <ardour/send.h> +#include <ardour/audioplaylist.h> +#include <ardour/cycle_timer.h> +#include <ardour/audioregion.h> + +#include "i18n.h" +#include <locale.h> + +using namespace std; +using namespace ARDOUR; + +jack_nframes_t DiskStream::disk_io_chunk_frames; + +sigc::signal<void,DiskStream*> DiskStream::DiskStreamCreated; +sigc::signal<void,DiskStream*> DiskStream::CannotRecordNoInput; +sigc::signal<void,list<Source*>*> DiskStream::DeleteSources; +sigc::signal<void> DiskStream::DiskOverrun; +sigc::signal<void> DiskStream::DiskUnderrun; + +DiskStream::DiskStream (Session &sess, const string &name, Flag flag) + : _name (name), + _session (sess) +{ + /* prevent any write sources from being created */ + + in_set_state = true; + init (flag); + use_new_playlist (); + in_set_state = false; + + DiskStreamCreated (this); /* EMIT SIGNAL */ +} + +DiskStream::DiskStream (Session& sess, const XMLNode& node) + : _session (sess) + +{ + in_set_state = true; + init (Recordable); + + if (set_state (node)) { + in_set_state = false; + throw failed_constructor(); + } + + in_set_state = false; + + DiskStreamCreated (this); /* EMIT SIGNAL */ +} + +void +DiskStream::init_channel (ChannelInfo &chan) +{ + chan.playback_wrap_buffer = 0; + chan.capture_wrap_buffer = 0; + chan.speed_buffer = 0; + chan.peak_power = 0.0f; + chan.fades_source = 0; + chan.write_source = 0; + chan.source = 0; + chan.current_capture_buffer = 0; + chan.current_playback_buffer = 0; + + chan.playback_buf = new RingBufferNPT<Sample> (_session.diskstream_buffer_size()); + chan.capture_buf = new RingBufferNPT<Sample> (_session.diskstream_buffer_size()); + + /* touch the ringbuffer buffers, which will cause + them to be mapped into locked physical RAM if + we're running with mlockall(). this doesn't do + much if we're not. + */ + memset (chan.playback_buf->buffer(), 0, sizeof (Sample) * chan.playback_buf->bufsize()); + memset (chan.capture_buf->buffer(), 0, sizeof (Sample) * chan.capture_buf->bufsize()); +} + + +void +DiskStream::init (Flag f) +{ + _id = new_id(); + _refcnt = 0; + _flags = f; + _io = 0; + _alignment_style = ExistingMaterial; + _persistent_alignment_style = ExistingMaterial; + first_input_change = true; + rec_monitoring_off_for_roll = false; + _playlist = 0; + i_am_the_modifier = 0; + atomic_set (&_record_enabled, 0); + was_recording = false; + capture_start_frame = 0; + capture_captured = 0; + _visible_speed = 1.0f; + _actual_speed = 1.0f; + _buffer_reallocation_required = false; + _seek_required = false; + first_recordable_frame = max_frames; + last_recordable_frame = max_frames; + _roll_delay = 0; + _capture_offset = 0; + _processed = false; + _slaved = false; + adjust_capture_position = 0; + last_possibly_recording = 0; + loop_location = 0; + wrap_buffer_size = 0; + speed_buffer_size = 0; + last_phase = 0; + phi = (uint64_t) (0x1000000); + file_frame = 0; + playback_sample = 0; + playback_distance = 0; + _read_data_count = 0; + _write_data_count = 0; + deprecated_io_node = 0; + + /* there are no channels at this point, so these + two calls just get speed_buffer_size and wrap_buffer + size setup without duplicating their code. + */ + + set_block_size (_session.get_block_size()); + allocate_temporary_buffers (); + + pending_overwrite = false; + overwrite_frame = 0; + overwrite_queued = false; + input_change_pending = NoChange; + + add_channel (); + _n_channels = 1; +} + +void +DiskStream::destroy_channel (ChannelInfo &chan) +{ + if (chan.write_source) { + chan.write_source->release (); + chan.write_source = 0; + } + + if (chan.speed_buffer) { + delete [] chan.speed_buffer; + } + + if (chan.playback_wrap_buffer) { + delete [] chan.playback_wrap_buffer; + } + if (chan.capture_wrap_buffer) { + delete [] chan.capture_wrap_buffer; + } + + delete chan.playback_buf; + delete chan.capture_buf; + + chan.playback_buf = 0; + chan.capture_buf = 0; +} + +DiskStream::~DiskStream () +{ + LockMonitor lm (state_lock, __LINE__, __FILE__); + + if (_playlist) { + _playlist->unref (); + } + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + destroy_channel((*chan)); + } + + channels.clear(); +} + +void +DiskStream::handle_input_change (IOChange change, void *src) +{ + LockMonitor lm (state_lock, __LINE__, __FILE__); + + if (!(input_change_pending & change)) { + input_change_pending = IOChange (input_change_pending|change); + _session.request_input_change_handling (); + } +} + +void +DiskStream::non_realtime_input_change () +{ + { + LockMonitor lm (state_lock, __LINE__, __FILE__); + + if (input_change_pending == NoChange) { + return; + } + + if (input_change_pending & ConfigurationChanged) { + + if (_io->n_inputs() > _n_channels) { + + // we need to add new channel infos + + int diff = _io->n_inputs() - channels.size(); + + for (int i = 0; i < diff; ++i) { + add_channel (); + } + + } else if (_io->n_inputs() < _n_channels) { + + // we need to get rid of channels + + int diff = channels.size() - _io->n_inputs(); + + for (int i = 0; i < diff; ++i) { + remove_channel (); + } + } + } + + get_input_sources (); + set_capture_offset (); + + if (first_input_change) { + set_align_style (_persistent_alignment_style); + first_input_change = false; + } else { + set_align_style_from_io (); + } + + input_change_pending = NoChange; + } + + /* reset capture files */ + + reset_write_sources (false); + + /* now refill channel buffers */ + + if (speed() != 1.0f || speed() != -1.0f) { + seek ((jack_nframes_t) (_session.transport_frame() * (double) speed())); + } + else { + seek (_session.transport_frame()); + } +} + +void +DiskStream::get_input_sources () +{ + uint32_t ni = _io->n_inputs(); + + for (uint32_t n = 0; n < ni; ++n) { + + const char **connections = _io->input(n)->get_connections (); + ChannelInfo& chan = channels[n]; + + if (connections == 0 || connections[0] == 0) { + + if (chan.source) { + // _source->disable_metering (); + } + + chan.source = 0; + + } else { + chan.source = _session.engine().get_port_by_name (connections[0]); + } + + if (connections) { + free (connections); + } + } +} + +int +DiskStream::find_and_use_playlist (const string& name) +{ + Playlist* pl; + AudioPlaylist* playlist; + + if ((pl = _session.get_playlist (name)) == 0) { + error << compose(_("DiskStream: Session doesn't know about a Playlist called \"%1\""), name) << endmsg; + return -1; + } + + if ((playlist = dynamic_cast<AudioPlaylist*> (pl)) == 0) { + error << compose(_("DiskStream: Playlist \"%1\" isn't an audio playlist"), name) << endmsg; + return -1; + } + + return use_playlist (playlist); +} + +int +DiskStream::use_playlist (AudioPlaylist* playlist) +{ + { + LockMonitor lm (state_lock, __LINE__, __FILE__); + + if (playlist == _playlist) { + return 0; + } + + plstate_connection.disconnect(); + plmod_connection.disconnect (); + plgone_connection.disconnect (); + + if (_playlist) { + _playlist->unref(); + } + + _playlist = playlist; + _playlist->ref(); + + if (!in_set_state && recordable()) { + reset_write_sources (false); + } + + plstate_connection = _playlist->StateChanged.connect (mem_fun (*this, &DiskStream::playlist_changed)); + plmod_connection = _playlist->Modified.connect (mem_fun (*this, &DiskStream::playlist_modified)); + plgone_connection = _playlist->GoingAway.connect (mem_fun (*this, &DiskStream::playlist_deleted)); + } + + if (!overwrite_queued) { + _session.request_overwrite_buffer (this); + overwrite_queued = true; + } + + PlaylistChanged (); /* EMIT SIGNAL */ + _session.set_dirty (); + + return 0; +} + +void +DiskStream::playlist_deleted (Playlist* pl) +{ + /* this catches an ordering issue with session destruction. playlists + are destroyed before diskstreams. we have to invalidate any handles + we have to the playlist. + */ + + _playlist = 0; +} + +int +DiskStream::use_new_playlist () +{ + string newname; + AudioPlaylist* playlist; + + if (_playlist) { + newname = Playlist::bump_name (_playlist->name(), _session); + } else { + newname = Playlist::bump_name (_name, _session); + } + + if ((playlist = new AudioPlaylist (_session, newname, hidden())) != 0) { + playlist->set_orig_diskstream_id (id()); + return use_playlist (playlist); + } else { + return -1; + } +} + +int +DiskStream::use_copy_playlist () +{ + if (_playlist == 0) { + error << compose(_("DiskStream %1: there is no existing playlist to make a copy of!"), _name) << endmsg; + return -1; + } + + string newname; + AudioPlaylist* playlist; + + newname = Playlist::bump_name (_playlist->name(), _session); + + if ((playlist = new AudioPlaylist (*_playlist, newname)) != 0) { + playlist->set_orig_diskstream_id (id()); + return use_playlist (playlist); + } else { + return -1; + } +} + +void +DiskStream::set_io (IO& io) +{ + _io = &io; + set_align_style_from_io (); +} + +void +DiskStream::set_name (string str, void *src) +{ + if (str != _name) { + _playlist->set_name (str); + _name = str; + + if (!in_set_state && recordable()) { + + /* open new capture files so that they have the correct name */ + + reset_write_sources (false); + } + } +} + +void +DiskStream::set_speed (float sp) +{ + _session.request_diskstream_speed (*this, sp); + + /* to force a rebuffering at the right place */ + playlist_modified(); +} + +bool +DiskStream::realtime_set_speed (float sp, bool global) +{ + bool changed = false; + float new_speed = sp * _session.transport_speed(); + + if (_visible_speed != sp) { + _visible_speed = sp; + changed = true; + } + + if (new_speed != _actual_speed) { + + jack_nframes_t required_wrap_size = (jack_nframes_t) floor (_session.get_block_size() * + fabs (new_speed)) + 1; + + if (required_wrap_size > wrap_buffer_size) { + _buffer_reallocation_required = true; + } + + _actual_speed = new_speed; + phi = (uint64_t) (0x1000000 * fabs(_actual_speed)); + } + + if (changed) { + if (!global) { + _seek_required = true; + } + speed_changed (); /* EMIT SIGNAL */ + } + + return _buffer_reallocation_required || _seek_required; +} + +void +DiskStream::non_realtime_set_speed () +{ + if (_buffer_reallocation_required) + { + LockMonitor lm (state_lock, __LINE__, __FILE__); + allocate_temporary_buffers (); + + _buffer_reallocation_required = false; + } + + if (_seek_required) { + if (speed() != 1.0f || speed() != -1.0f) { + seek ((jack_nframes_t) (_session.transport_frame() * (double) speed()), true); + } + else { + seek (_session.transport_frame(), true); + } + + _seek_required = false; + } +} + +void +DiskStream::prepare () +{ + _processed = false; + playback_distance = 0; +} + +void +DiskStream::check_record_status (jack_nframes_t transport_frame, jack_nframes_t nframes, bool can_record) +{ + int possibly_recording; + int rolling; + int change; + const int transport_rolling = 0x4; + const int track_rec_enabled = 0x2; + const int global_rec_enabled = 0x1; + + /* merge together the 3 factors that affect record status, and compute + what has changed. + */ + + rolling = _session.transport_speed() != 0.0f; + possibly_recording = (rolling << 2) | (record_enabled() << 1) | can_record; + change = possibly_recording ^ last_possibly_recording; + + if (possibly_recording == last_possibly_recording) { + return; + } + + /* change state */ + + /* if per-track or global rec-enable turned on while the other was already on, we've started recording */ + + if ((change & track_rec_enabled) && record_enabled() && (!(change & global_rec_enabled) && can_record) || + ((change & global_rec_enabled) && can_record && (!(change & track_rec_enabled) && record_enabled()))) { + + /* starting to record: compute first+last frames */ + + first_recordable_frame = transport_frame + _capture_offset; + last_recordable_frame = max_frames; + capture_start_frame = transport_frame; + + if (!(last_possibly_recording & transport_rolling) && (possibly_recording & transport_rolling)) { + + /* was stopped, now rolling (and recording) */ + + if (_alignment_style == ExistingMaterial) { + first_recordable_frame += _session.worst_output_latency(); + } else { + first_recordable_frame += _roll_delay; + } + + } else { + + /* was rolling, but record state changed */ + + if (_alignment_style == ExistingMaterial) { + + + if (!_session.get_punch_in()) { + + /* manual punch in happens at the correct transport frame + because the user hit a button. but to get alignment correct + we have to back up the position of the new region to the + appropriate spot given the roll delay. + */ + + capture_start_frame -= _roll_delay; + + /* XXX paul notes (august 2005): i don't know why + this is needed. + */ + + first_recordable_frame += _capture_offset; + + } else { + + /* autopunch toggles recording at the precise + transport frame, and then the DS waits + to start recording for a time that depends + on the output latency. + */ + + first_recordable_frame += _session.worst_output_latency(); + } + + } else { + + if (_session.get_punch_in()) { + first_recordable_frame += _roll_delay; + } else { + capture_start_frame -= _roll_delay; + } + } + + } + + } else if (!record_enabled() || !can_record) { + + /* stop recording */ + + last_recordable_frame = transport_frame + _capture_offset; + + if (_alignment_style == ExistingMaterial) { + last_recordable_frame += _session.worst_output_latency(); + } else { + last_recordable_frame += _roll_delay; + } + } + + last_possibly_recording = possibly_recording; +} + +int +DiskStream::process (jack_nframes_t transport_frame, jack_nframes_t nframes, jack_nframes_t offset, bool can_record, bool rec_monitors_input) +{ + uint32_t n; + ChannelList::iterator c; + int ret = -1; + jack_nframes_t rec_offset = 0; + jack_nframes_t rec_nframes = 0; + bool nominally_recording; + bool re = record_enabled (); + bool collect_playback = false; + + /* if we've already processed the frames corresponding to this call, + just return. this allows multiple routes that are taking input + from this diskstream to call our ::process() method, but have + this stuff only happen once. more commonly, it allows both + the AudioTrack that is using this DiskStream *and* the Session + to call process() without problems. + */ + + if (_processed) { + return 0; + } + + check_record_status (transport_frame, nframes, can_record); + + nominally_recording = (can_record && re); + + if (nframes == 0) { + _processed = true; + return 0; + } + + /* This lock is held until the end of DiskStream::commit, so these two functions + must always be called as a pair. The only exception is if this function + returns a non-zero value, in which case, ::commit should not be called. + */ + + if (pthread_mutex_trylock (state_lock.mutex())) { + return 1; + } + + adjust_capture_position = 0; + + for (c = channels.begin(); c != channels.end(); ++c) { + (*c).current_capture_buffer = 0; + (*c).current_playback_buffer = 0; + } + + if (nominally_recording || (_session.get_record_enabled() && _session.get_punch_in())) { + OverlapType ot; + + ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes); + + switch (ot) { + case OverlapNone: + rec_nframes = 0; + break; + + case OverlapInternal: + /* ---------- recrange + |---| transrange + */ + rec_nframes = nframes; + rec_offset = 0; + break; + + case OverlapStart: + /* |--------| recrange + -----| transrange + */ + rec_nframes = transport_frame + nframes - first_recordable_frame; + if (rec_nframes) { + rec_offset = first_recordable_frame - transport_frame; + } + break; + + case OverlapEnd: + /* |--------| recrange + |-------- transrange + */ + rec_nframes = last_recordable_frame - transport_frame; + rec_offset = 0; + break; + + case OverlapExternal: + /* |--------| recrange + -------------- transrange + */ + rec_nframes = last_recordable_frame - last_recordable_frame; + rec_offset = first_recordable_frame - transport_frame; + break; + } + + if (rec_nframes && !was_recording) { + capture_captured = 0; + was_recording = true; + } + } + + + if (can_record && !_last_capture_regions.empty()) { + _last_capture_regions.clear (); + } + + if (rec_nframes) { + + if (Config->get_use_hardware_monitoring() && re && rec_monitoring_off_for_roll && rec_monitors_input) { + for (c = channels.begin(); c != channels.end(); ++c) { + (*c).source->ensure_monitor_input (true); + } + rec_monitoring_off_for_roll = false; + } + } + + if (nominally_recording || rec_nframes) { + + for (n = 0, c = channels.begin(); c != channels.end(); ++c, ++n) { + + ChannelInfo& chan (*c); + + chan.capture_buf->get_write_vector (&chan.capture_vector); + + if (rec_nframes <= chan.capture_vector.len[0]) { + + chan.current_capture_buffer = chan.capture_vector.buf[0]; + + /* note: grab the entire port buffer, but only copy what we were supposed to for recording, and use + rec_offset + */ + + memcpy (chan.current_capture_buffer, _io->input(n)->get_buffer (rec_nframes) + offset + rec_offset, sizeof (Sample) * rec_nframes); + + } else { + + jack_nframes_t total = chan.capture_vector.len[0] + chan.capture_vector.len[1]; + + if (rec_nframes > total) { + DiskOverrun (); + goto out; + } + + Sample* buf = _io->input (n)->get_buffer (nframes) + offset; + jack_nframes_t first = chan.capture_vector.len[0]; + + memcpy (chan.capture_wrap_buffer, buf, sizeof (Sample) * first); + memcpy (chan.capture_vector.buf[0], buf, sizeof (Sample) * first); + memcpy (chan.capture_wrap_buffer+first, buf + first, sizeof (Sample) * (rec_nframes - first)); + memcpy (chan.capture_vector.buf[1], buf + first, sizeof (Sample) * (rec_nframes - first)); + + chan.current_capture_buffer = chan.capture_wrap_buffer; + } + } + + } else { + + if (was_recording) { + finish_capture (rec_monitors_input); + } + + } + + if (rec_nframes) { + + /* data will be written to disk */ + + if (rec_nframes == nframes && rec_offset == 0) { + + for (c = channels.begin(); c != channels.end(); ++c) { + (*c).current_playback_buffer = (*c).current_capture_buffer; + } + + playback_distance = nframes; + + } else { + + /* we can't use the capture buffer as the playback buffer, because + we recorded only a part of the current process' cycle data + for capture. + */ + + collect_playback = true; + } + + adjust_capture_position = rec_nframes; + + } else if (nominally_recording) { + + /* can't do actual capture yet - waiting for latency effects to finish before we start*/ + + for (c = channels.begin(); c != channels.end(); ++c) { + (*c).current_playback_buffer = (*c).current_capture_buffer; + } + + playback_distance = nframes; + + } else { + + collect_playback = true; + } + + if (collect_playback) { + + /* we're doing playback */ + + jack_nframes_t necessary_samples; + + /* no varispeed playback if we're recording, because the output .... TBD */ + + if (rec_nframes == 0 && _actual_speed != 1.0f) { + necessary_samples = (jack_nframes_t) floor ((nframes * fabs (_actual_speed))) + 1; + } else { + necessary_samples = nframes; + } + + for (c = channels.begin(); c != channels.end(); ++c) { + (*c).playback_buf->get_read_vector (&(*c).playback_vector); + } + + n = 0; + + for (c = channels.begin(); c != channels.end(); ++c, ++n) { + + ChannelInfo& chan (*c); + + if (necessary_samples <= chan.playback_vector.len[0]) { + + chan.current_playback_buffer = chan.playback_vector.buf[0]; + + } else { + jack_nframes_t total = chan.playback_vector.len[0] + chan.playback_vector.len[1]; + + if (necessary_samples > total) { + DiskUnderrun (); + goto out; + + } else { + + memcpy ((char *) chan.playback_wrap_buffer, chan.playback_vector.buf[0], + chan.playback_vector.len[0] * sizeof (Sample)); + memcpy (chan.playback_wrap_buffer + chan.playback_vector.len[0], chan.playback_vector.buf[1], + (necessary_samples - chan.playback_vector.len[0]) * sizeof (Sample)); + + chan.current_playback_buffer = chan.playback_wrap_buffer; + } + } + } + + if (rec_nframes == 0 && _actual_speed != 1.0f && _actual_speed != -1.0f) { + + uint64_t phase = last_phase; + jack_nframes_t i = 0; + + // Linearly interpolate into the alt buffer + // using 40.24 fixp maths (swh) + + for (c = channels.begin(); c != channels.end(); ++c) { + + float fr; + ChannelInfo& chan (*c); + + i = 0; + phase = last_phase; + + for (jack_nframes_t outsample = 0; outsample < nframes; ++outsample) { + i = phase >> 24; + fr = (phase & 0xFFFFFF) / 16777216.0f; + chan.speed_buffer[outsample] = + chan.current_playback_buffer[i] * (1.0f - fr) + + chan.current_playback_buffer[i+1] * fr; + phase += phi; + } + + chan.current_playback_buffer = chan.speed_buffer; + } + + playback_distance = i + 1; + last_phase = (phase & 0xFFFFFF); + + } else { + playback_distance = nframes; + } + + } + + ret = 0; + + out: + _processed = true; + + if (ret) { + + /* we're exiting with failure, so ::commit will not + be called. unlock the state lock. + */ + + pthread_mutex_unlock (state_lock.mutex()); + } + + return ret; +} + +void +DiskStream::recover () +{ + pthread_mutex_unlock (state_lock.mutex()); + _processed = false; +} + +bool +DiskStream::commit (jack_nframes_t nframes) +{ + bool need_butler = false; + + if (_actual_speed < 0.0) { + playback_sample -= playback_distance; + } else { + playback_sample += playback_distance; + } + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + + (*chan).playback_buf->increment_read_ptr (playback_distance); + + if (adjust_capture_position) { + (*chan).capture_buf->increment_write_ptr (adjust_capture_position); + } + } + + if (adjust_capture_position != 0) { + capture_captured += adjust_capture_position; + adjust_capture_position = 0; + } + + if (_slaved) { + need_butler = channels[0].playback_buf->write_space() >= channels[0].playback_buf->bufsize() / 2; + } else { + need_butler = channels[0].playback_buf->write_space() >= disk_io_chunk_frames + || channels[0].capture_buf->read_space() >= disk_io_chunk_frames; + } + + pthread_mutex_unlock (state_lock.mutex()); + + _processed = false; + + return need_butler; +} + +void +DiskStream::set_pending_overwrite (bool yn) +{ + /* called from audio thread, so we can use the read ptr and playback sample as we wish */ + + pending_overwrite = yn; + + overwrite_frame = playback_sample; + overwrite_offset = channels.front().playback_buf->get_read_ptr(); +} + +int +DiskStream::overwrite_existing_buffers () +{ + Sample* mixdown_buffer; + float* gain_buffer; + int ret = -1; + bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f; + + overwrite_queued = false; + + /* assume all are the same size */ + jack_nframes_t size = channels[0].playback_buf->bufsize(); + + mixdown_buffer = new Sample[size]; + gain_buffer = new float[size]; + + /* reduce size so that we can fill the buffer correctly. */ + size--; + + uint32_t n=0; + jack_nframes_t start; + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan, ++n) { + + start = overwrite_frame; + jack_nframes_t cnt = size; + + /* to fill the buffer without resetting the playback sample, we need to + do it one or two chunks (normally two). + + |----------------------------------------------------------------------| + + ^ + overwrite_offset + |<- second chunk->||<----------------- first chunk ------------------>| + + */ + + jack_nframes_t to_read = size - overwrite_offset; + + if (read ((*chan).playback_buf->buffer() + overwrite_offset, mixdown_buffer, gain_buffer, + start, to_read, *chan, n, reversed)) { + error << compose(_("DiskStream %1: when refilling, cannot read %2 from playlist at frame %3"), + _id, size, playback_sample) << endmsg; + goto out; + } + + if (cnt > to_read) { + + cnt -= to_read; + + if (read ((*chan).playback_buf->buffer(), mixdown_buffer, gain_buffer, + start, cnt, *chan, n, reversed)) { + error << compose(_("DiskStream %1: when refilling, cannot read %2 from playlist at frame %3"), + _id, size, playback_sample) << endmsg; + goto out; + } + } + } + + ret = 0; + + out: + pending_overwrite = false; + delete [] gain_buffer; + delete [] mixdown_buffer; + return ret; +} + +int +DiskStream::seek (jack_nframes_t frame, bool complete_refill) +{ + LockMonitor lm (state_lock, __LINE__, __FILE__); + uint32_t n; + int ret; + ChannelList::iterator chan; + + for (n = 0, chan = channels.begin(); chan != channels.end(); ++chan, ++n) { + (*chan).playback_buf->reset (); + (*chan).capture_buf->reset (); + } + + playback_sample = frame; + file_frame = frame; + + if (complete_refill) { + while ((ret = do_refill (0, 0)) > 0); + } else { + ret = do_refill (0, 0); + } + + return ret; +} + +int +DiskStream::can_internal_playback_seek (jack_nframes_t distance) +{ + ChannelList::iterator chan; + + for (chan = channels.begin(); chan != channels.end(); ++chan) { + if ((*chan).playback_buf->read_space() < distance) { + return false; + } + } + return true; +} + +int +DiskStream::internal_playback_seek (jack_nframes_t distance) +{ + ChannelList::iterator chan; + + for (chan = channels.begin(); chan != channels.end(); ++chan) { + (*chan).playback_buf->increment_read_ptr (distance); + } + + first_recordable_frame += distance; + playback_sample += distance; + + return 0; +} + +int +DiskStream::read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer, jack_nframes_t& start, jack_nframes_t cnt, + + ChannelInfo& channel_info, int channel, bool reversed) +{ + jack_nframes_t this_read = 0; + bool reloop = false; + jack_nframes_t loop_end = 0; + jack_nframes_t loop_start = 0; + jack_nframes_t loop_length = 0; + jack_nframes_t offset = 0; + Location *loc = 0; + + if (!reversed) { + /* Make the use of a Location atomic for this read operation. + + Note: Locations don't get deleted, so all we care about + when I say "atomic" is that we are always pointing to + the same one and using a start/length values obtained + just once. + */ + + if ((loc = loop_location) != 0) { + loop_start = loc->start(); + loop_end = loc->end(); + loop_length = loop_end - loop_start; + } + + /* if we are looping, ensure that the first frame we read is at the correct + position within the loop. + */ + + if (loc && start >= loop_end) { + //cerr << "start adjusted from " << start; + start = loop_start + ((start - loop_start) % loop_length); + //cerr << "to " << start << endl; + } + //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl; + } + + while (cnt) { + + /* take any loop into account. we can't read past the end of the loop. */ + + if (loc && (loop_end - start < cnt)) { + this_read = loop_end - start; + //cerr << "reloop true: thisread: " << this_read << " cnt: " << cnt << endl; + reloop = true; + } else { + reloop = false; + this_read = cnt; + } + + if (this_read == 0) { + break; + } + + this_read = min(cnt,this_read); + + if (_playlist->read (buf+offset, mixdown_buffer, gain_buffer, start, this_read, channel) != this_read) { + error << compose(_("DiskStream %1: cannot read %2 from playlist at frame %3"), _id, this_read, + start) << endmsg; + return -1; + } + + _read_data_count = _playlist->read_data_count(); + + if (reversed) { + + /* don't adjust start, since caller has already done that + */ + + swap_by_ptr (buf, buf + this_read - 1); + + } else { + + /* if we read to the end of the loop, go back to the beginning */ + + if (reloop) { + start = loop_start; + } else { + start += this_read; + } + } + + cnt -= this_read; + offset += this_read; + } + + return 0; +} + +int +DiskStream::do_refill (Sample* mixdown_buffer, float* gain_buffer) +{ + int32_t ret = 0; + jack_nframes_t to_read; + RingBufferNPT<Sample>::rw_vector vector; + bool free_mixdown; + bool free_gain; + bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f; + jack_nframes_t total_space; + jack_nframes_t zero_fill; + uint32_t chan_n; + ChannelList::iterator i; + jack_nframes_t ts; + + channels.front().playback_buf->get_write_vector (&vector); + + if ((total_space = vector.len[0] + vector.len[1]) == 0) { + return 0; + } + + /* if there are 2+ chunks of disk i/o possible for + this track, let the caller know so that it can arrange + for us to be called again, ASAP. + */ + + if (total_space >= (_slaved?3:2) * disk_io_chunk_frames) { + ret = 1; + } + + /* if we're running close to normal speed and there isn't enough + space to do disk_io_chunk_frames of I/O, then don't bother. + + at higher speeds, just do it because the sync between butler + and audio thread may not be good enough. + */ + + if ((total_space < disk_io_chunk_frames) && fabs (_actual_speed) < 2.0f) { + return 0; + } + + /* when slaved, don't try to get too close to the read pointer. this + leaves space for the buffer reversal to have something useful to + work with. + */ + + if (_slaved && total_space < (channels.front().playback_buf->bufsize() / 2)) { + return 0; + } + + total_space = min (disk_io_chunk_frames, total_space); + + if (reversed) { + + if (file_frame == 0) { + + /* at start: nothing to do but fill with silence */ + + for (chan_n = 0, i = channels.begin(); i != channels.end(); ++i, ++chan_n) { + + ChannelInfo& chan (*i); + chan.playback_buf->get_write_vector (&vector); + memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]); + if (vector.len[1]) { + memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]); + } + chan.playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]); + } + return 0; + } + + if (file_frame < total_space) { + + /* too close to the start: read what we can, + and then zero fill the rest + */ + + zero_fill = total_space - file_frame; + total_space = file_frame; + file_frame = 0; + + } else { + + /* move read position backwards because we are going + to reverse the data. + */ + + file_frame -= total_space; + zero_fill = 0; + } + + } else { + + if (file_frame == max_frames) { + + /* at end: nothing to do but fill with silence */ + + for (chan_n = 0, i = channels.begin(); i != channels.end(); ++i, ++chan_n) { + + ChannelInfo& chan (*i); + chan.playback_buf->get_write_vector (&vector); + memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]); + if (vector.len[1]) { + memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]); + } + chan.playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]); + } + return 0; + } + + if (file_frame > max_frames - total_space) { + + /* to close to the end: read what we can, and zero fill the rest */ + + zero_fill = total_space - (max_frames - file_frame); + total_space = max_frames - file_frame; + + } else { + zero_fill = 0; + } + } + + /* Please note: the code to allocate buffers isn't run + during normal butler thread operation. Its there + for other times when we need to call do_refill() + from somewhere other than the butler thread. + */ + + if (mixdown_buffer == 0) { + mixdown_buffer = new Sample[disk_io_chunk_frames]; + free_mixdown = true; + } else { + free_mixdown = false; + } + + if (gain_buffer == 0) { + gain_buffer = new float[disk_io_chunk_frames]; + free_gain = true; + } else { + free_gain = false; + } + + jack_nframes_t file_frame_tmp = 0; + + for (chan_n = 0, i = channels.begin(); i != channels.end(); ++i, ++chan_n) { + + ChannelInfo& chan (*i); + Sample* buf1; + Sample* buf2; + jack_nframes_t len1, len2; + + chan.playback_buf->get_write_vector (&vector); + + ts = total_space; + file_frame_tmp = file_frame; + + if (reversed) { + buf1 = vector.buf[1]; + len1 = vector.len[1]; + buf2 = vector.buf[0]; + len2 = vector.len[0]; + } else { + buf1 = vector.buf[0]; + len1 = vector.len[0]; + buf2 = vector.buf[1]; + len2 = vector.len[1]; + } + + + to_read = min (ts, len1); + to_read = min (to_read, disk_io_chunk_frames); + + if (to_read) { + + if (read (buf1, mixdown_buffer, gain_buffer, file_frame_tmp, to_read, chan, chan_n, reversed)) { + ret = -1; + goto out; + } + + chan.playback_buf->increment_write_ptr (to_read); + ts -= to_read; + } + + to_read = min (ts, len2); + + if (to_read) { + + + /* we read all of vector.len[0], but it wasn't an entire disk_io_chunk_frames of data, + so read some or all of vector.len[1] as well. + */ + + if (read (buf2, mixdown_buffer, gain_buffer, file_frame_tmp, to_read, chan, chan_n, reversed)) { + ret = -1; + goto out; + } + + chan.playback_buf->increment_write_ptr (to_read); + } + + if (zero_fill) { + /* do something */ + } + + } + + file_frame = file_frame_tmp; + + out: + if (free_mixdown) { + delete [] mixdown_buffer; + } + if (free_gain) { + delete [] gain_buffer; + } + + return ret; +} + +int +DiskStream::do_flush (bool force_flush) +{ + uint32_t to_write; + int32_t ret = 0; + RingBufferNPT<Sample>::rw_vector vector; + jack_nframes_t total; + + /* important note: this function will write *AT MOST* + disk_io_chunk_frames of data to disk. it will never + write more than that. if its writes that much and there + is more than that waiting to be written, it will return 1, + otherwise 0 on success or -1 on failure. + + if there is less than disk_io_chunk_frames to be written, + no data will be written at all unless `force_flush' is true. + */ + + _write_data_count = 0; + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + + (*chan).capture_buf->get_read_vector (&vector); + + total = vector.len[0] + vector.len[1]; + + if (total == 0 || (total < disk_io_chunk_frames && !force_flush && was_recording)) { + goto out; + } + + /* if there are 2+ chunks of disk i/o possible for + this track, let the caller know so that it can arrange + for us to be called again, ASAP. + + if we are forcing a flush, then if there is* any* extra + work, let the caller know. + + if we are no longer recording and there is any extra work, + let the caller know too. + */ + + if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) { + ret = 1; + } + + to_write = min (disk_io_chunk_frames, (jack_nframes_t) vector.len[0]); + + if ((!(*chan).write_source) || (*chan).write_source->write (vector.buf[0], to_write) != to_write) { + error << compose(_("DiskStream %1: cannot write to disk"), _id) << endmsg; + return -1; + } + + (*chan).capture_buf->increment_read_ptr (to_write); + + if ((to_write == vector.len[0]) && (total > to_write) && (to_write < disk_io_chunk_frames)) { + + /* we wrote all of vector.len[0] but it wasn't an entire + disk_io_chunk_frames of data, so arrange for some part + of vector.len[1] to be flushed to disk as well. + */ + + to_write = min ((jack_nframes_t)(disk_io_chunk_frames - to_write), (jack_nframes_t) vector.len[1]); + + if ((*chan).write_source->write (vector.buf[1], to_write) != to_write) { + error << compose(_("DiskStream %1: cannot write to disk"), _id) << endmsg; + return -1; + } + + _write_data_count += (*chan).write_source->write_data_count(); + + (*chan).capture_buf->increment_read_ptr (to_write); + } + } + + out: + return ret; +} + +void +DiskStream::playlist_changed (Change ignored) +{ + playlist_modified (); +} + +void +DiskStream::playlist_modified () +{ + if (!i_am_the_modifier && !overwrite_queued) { + _session.request_overwrite_buffer (this); + overwrite_queued = true; + } +} + +void +DiskStream::transport_stopped (struct tm& when, time_t twhen, bool abort_capture) +{ + uint32_t buffer_position; + bool more_work = true; + int err = 0; + AudioRegion* region = 0; + jack_nframes_t total_capture; + AudioRegion::SourceList srcs; + AudioRegion::SourceList::iterator src; + ChannelList::iterator chan; + vector<CaptureInfo*>::iterator ci; + uint32_t n = 0; + list<Source*>* deletion_list; + bool mark_write_completed = false; + + finish_capture (true); + + /* butler is already stopped, but there may be work to do + to flush remaining data to disk. + */ + + while (more_work && !err) { + switch (do_flush (true)) { + case 0: + more_work = false; + break; + case 1: + break; + case -1: + error << compose(_("DiskStream \"%1\": cannot flush captured data to disk!"), _name) << endmsg; + err++; + } + } + + /* XXX is there anything we can do if err != 0 ? */ + LockMonitor lm (capture_info_lock, __LINE__, __FILE__); + + if (capture_info.empty()) { + return; + } + + if (abort_capture) { + + ChannelList::iterator chan; + + deletion_list = new list<Source*>; + + for ( chan = channels.begin(); chan != channels.end(); ++chan) { + + if ((*chan).write_source) { + + (*chan).write_source->mark_for_remove (); + (*chan).write_source->release (); + + deletion_list->push_back ((*chan).write_source); + + (*chan).write_source = 0; + } + + /* new source set up in "out" below */ + } + + if (!deletion_list->empty()) { + DeleteSources (deletion_list); + } else { + delete deletion_list; + } + + goto out; + } + + for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) { + total_capture += (*ci)->frames; + } + + /* figure out the name for this take */ + + for (n = 0, chan = channels.begin(); chan != channels.end(); ++chan, ++n) { + + Source* s = (*chan).write_source; + + if (s) { + + FileSource* fsrc; + + srcs.push_back (s); + + if ((fsrc = dynamic_cast<FileSource *>(s)) != 0) { + fsrc->update_header (capture_info.front()->start, when, twhen); + } + + s->set_captured_for (_name); + + } + } + + /* Register a new region with the Session that + describes the entire source. Do this first + so that any sub-regions will obviously be + children of this one (later!) + */ + + try { + region = new AudioRegion (srcs, 0, total_capture, + region_name_from_path (channels[0].write_source->name()), + 0, AudioRegion::Flag (AudioRegion::DefaultFlags|AudioRegion::Automatic|AudioRegion::WholeFile)); + + region->special_set_position (capture_info.front()->start); + } + + catch (failed_constructor& err) { + error << compose(_("%1: could not create region for complete audio file"), _name) << endmsg; + /* XXX what now? */ + } + + _last_capture_regions.push_back (region); + + // cerr << _name << ": there are " << capture_info.size() << " capture_info records\n"; + + _session.add_undo (_playlist->get_memento()); + _playlist->freeze (); + + for (buffer_position = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) { + + string region_name; + _session.region_name (region_name, _name, false); + + // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n"; + + try { + region = new AudioRegion (srcs, buffer_position, (*ci)->frames, region_name); + } + + catch (failed_constructor& err) { + error << _("DiskStream: could not create region for captured audio!") << endmsg; + continue; /* XXX is this OK? */ + } + + _last_capture_regions.push_back (region); + + // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl; + + i_am_the_modifier++; + _playlist->add_region (*region, (*ci)->start); + i_am_the_modifier--; + + buffer_position += (*ci)->frames; + } + + _playlist->thaw (); + _session.add_redo_no_execute (_playlist->get_memento()); + + mark_write_completed = true; + + reset_write_sources (mark_write_completed); + + out: + for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) { + delete *ci; + } + + capture_info.clear (); + capture_start_frame = 0; +} + +void +DiskStream::finish_capture (bool rec_monitors_input) +{ + if (Config->get_use_hardware_monitoring() && record_enabled()) { + if (rec_monitors_input) { + if (rec_monitoring_off_for_roll) { + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + (*chan).source->ensure_monitor_input (true); + } + rec_monitoring_off_for_roll = false; + } + } else { + if (!rec_monitoring_off_for_roll) { + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + (*chan).source->ensure_monitor_input (false); + } + rec_monitoring_off_for_roll = true; + } + } + } + + was_recording = false; + + if (capture_captured == 0) { + return; + } + + CaptureInfo* ci = new CaptureInfo; + + ci->start = capture_start_frame; + ci->frames = capture_captured; + + /* XXX theoretical race condition here. Need atomic exchange ? + However, the circumstances when this is called right + now (either on record-disable or transport_stopped) + mean that no actual race exists. I think ... + We now have a capture_info_lock, but it is only to be used + to synchronize in the transport_stop and the capture info + accessors, so that invalidation will not occur (both non-realtime). + */ + + // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl; + + capture_info.push_back (ci); + capture_captured = 0; +} + +void +DiskStream::set_record_enabled (bool yn, void* src) +{ + if (!recordable() || !_session.record_enabling_legal()) { + return; + } + + /* if we're turning on rec-enable, there needs to be an + input connection. + */ + + if (yn && channels[0].source == 0) { + + /* pick up connections not initiated *from* the IO object + we're associated with. + */ + + get_input_sources (); + + if (channels[0].source == 0) { + + if (yn) { + CannotRecordNoInput (this); /* emit signal */ + } + return; + } + } + + /* yes, i know that this not proof against race conditions, but its + good enough. i think. + */ + + if (record_enabled() != yn) { + if (yn) { + atomic_set (&_record_enabled, 1); + capturing_sources.clear (); + if (Config->get_use_hardware_monitoring()) { + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + if ((*chan).source) { + (*chan).source->request_monitor_input (true); + } + capturing_sources.push_back ((*chan).write_source); + } + } else { + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + capturing_sources.push_back ((*chan).write_source); + } + } + + } else { + atomic_set (&_record_enabled, 0); + if (Config->get_use_hardware_monitoring()) { + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + if ((*chan).source) { + (*chan).source->request_monitor_input (false); + } + } + } + capturing_sources.clear (); + } + + record_enable_changed (src); /* EMIT SIGNAL */ + } +} + +XMLNode& +DiskStream::get_state () +{ + XMLNode* node = new XMLNode ("DiskStream"); + char buf[64]; + LocaleGuard lg (X_("POSIX")); + + snprintf (buf, sizeof(buf), "%d", channels.size()); + node->add_property ("channels", buf); + + node->add_property ("playlist", _playlist->name()); + + snprintf (buf, sizeof(buf), "%f", _visible_speed); + node->add_property ("speed", buf); + + node->add_property("name", _name); + snprintf (buf, sizeof(buf), "%" PRIu64, id()); + node->add_property("id", buf); + + if (!capturing_sources.empty() && _session.get_record_enabled()) { + + XMLNode* cs_child = new XMLNode (X_("CapturingSources")); + XMLNode* cs_grandchild; + + for (vector<FileSource*>::iterator i = capturing_sources.begin(); i != capturing_sources.end(); ++i) { + cs_grandchild = new XMLNode (X_("file")); + cs_grandchild->add_property (X_("path"), (*i)->path()); + cs_child->add_child_nocopy (*cs_grandchild); + } + + /* store the location where capture will start */ + + Location* pi; + + if (_session.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) { + snprintf (buf, sizeof (buf), "%" PRIu32, pi->start()); + } else { + snprintf (buf, sizeof (buf), "%" PRIu32, _session.transport_frame()); + } + + cs_child->add_property (X_("at"), buf); + node->add_child_nocopy (*cs_child); + } + + if (_extra_xml) { + node->add_child_copy (*_extra_xml); + } + + return* node; +} + +int +DiskStream::set_state (const XMLNode& node) +{ + const XMLProperty* prop; + XMLNodeList nlist = node.children(); + XMLNodeIterator niter; + uint32_t nchans = 1; + XMLNode* capture_pending_node = 0; + LocaleGuard lg (X_("POSIX")); + + in_set_state = true; + + for (niter = nlist.begin(); niter != nlist.end(); ++niter) { + if ((*niter)->name() == IO::state_node_name) { + deprecated_io_node = new XMLNode (**niter); + } + + if ((*niter)->name() == X_("CapturingSources")) { + capture_pending_node = *niter; + } + } + + /* prevent write sources from being created */ + + in_set_state = true; + + if ((prop = node.property ("name")) != 0) { + _name = prop->value(); + } + + if (deprecated_io_node) { + if ((prop = deprecated_io_node->property ("id")) != 0) { + sscanf (prop->value().c_str(), "%llu", &_id); + } + } else { + if ((prop = node.property ("id")) != 0) { + sscanf (prop->value().c_str(), "%llu", &_id); + } + } + + if ((prop = node.property ("channels")) != 0) { + nchans = atoi (prop->value().c_str()); + } + + // create necessary extra channels + // we are always constructed with one + // and we always need one + + if (nchans > _n_channels) { + + // we need to add new channel infos + //LockMonitor lm (state_lock, __LINE__, __FILE__); + + int diff = nchans - channels.size(); + + for (int i=0; i < diff; ++i) { + add_channel (); + } + + } else if (nchans < _n_channels) { + + // we need to get rid of channels + //LockMonitor lm (state_lock, __LINE__, __FILE__); + + int diff = channels.size() - nchans; + + for (int i = 0; i < diff; ++i) { + remove_channel (); + } + } + + if ((prop = node.property ("playlist")) == 0) { + return -1; + } + + { + bool had_playlist = (_playlist != 0); + + if (find_and_use_playlist (prop->value())) { + return -1; + } + + if (!had_playlist) { + _playlist->set_orig_diskstream_id (_id); + } + + if (capture_pending_node) { + use_pending_capture_data (*capture_pending_node); + } + + } + + if ((prop = node.property ("speed")) != 0) { + float sp = atof (prop->value().c_str()); + + if (realtime_set_speed (sp, false)) { + non_realtime_set_speed (); + } + } + + _n_channels = channels.size(); + + in_set_state = false; + + /* now that we're all done with playlist+channel set up, + go ahead and create write sources. + */ + + + capturing_sources.clear (); + + if (recordable()) { + reset_write_sources (false); + } + + in_set_state = false; + + return 0; +} + +int +DiskStream::use_new_write_source (uint32_t n) +{ + if (!recordable()) { + return 1; + } + + if (n >= channels.size()) { + error << compose (_("DiskStream: channel %1 out of range"), n) << endmsg; + return -1; + } + + ChannelInfo &chan = channels[n]; + + if (chan.write_source) { + + if (FileSource::is_empty (chan.write_source->path())) { + chan.write_source->mark_for_remove (); + chan.write_source->release(); + delete chan.write_source; + } else { + chan.write_source->release(); + chan.write_source = 0; + } + } + + try { + if ((chan.write_source = _session.create_file_source (*this, n)) == 0) { + throw failed_constructor(); + } + } + + catch (failed_constructor &err) { + error << compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg; + chan.write_source = 0; + return -1; + } + + chan.write_source->use (); + + return 0; +} + +void +DiskStream::reset_write_sources (bool mark_write_complete) +{ + ChannelList::iterator chan; + uint32_t n; + + if (!recordable()) { + return; + } + + capturing_sources.clear (); + + for (chan = channels.begin(), n = 0; chan != channels.end(); ++chan, ++n) { + if (mark_write_complete) { + (*chan).write_source->mark_streaming_write_completed (); + } + use_new_write_source (n); + if (record_enabled()) { + capturing_sources.push_back ((*chan).write_source); + } + } +} + +void +DiskStream::set_block_size (jack_nframes_t nframes) +{ + if (_session.get_block_size() > speed_buffer_size) { + speed_buffer_size = _session.get_block_size(); + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + if ((*chan).speed_buffer) delete [] (*chan).speed_buffer; + (*chan).speed_buffer = new Sample[speed_buffer_size]; + } + } + allocate_temporary_buffers (); +} + +void +DiskStream::allocate_temporary_buffers () +{ + /* make sure the wrap buffer is at least large enough to deal + with the speeds up to 1.2, to allow for micro-variation + when slaving to MTC, SMPTE etc. + */ + + float sp = max (fabsf (_actual_speed), 1.2f); + jack_nframes_t required_wrap_size = (jack_nframes_t) floor (_session.get_block_size() * sp) + 1; + + if (required_wrap_size > wrap_buffer_size) { + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + if ((*chan).playback_wrap_buffer) delete [] (*chan).playback_wrap_buffer; + (*chan).playback_wrap_buffer = new Sample[required_wrap_size]; + if ((*chan).capture_wrap_buffer) delete [] (*chan).capture_wrap_buffer; + (*chan).capture_wrap_buffer = new Sample[required_wrap_size]; + } + + wrap_buffer_size = required_wrap_size; + } +} + +void +DiskStream::monitor_input (bool yn) +{ + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + + if ((*chan).source) { + (*chan).source->request_monitor_input (yn); + } + } +} + +void +DiskStream::set_capture_offset () +{ + if (_io == 0) { + /* can't capture, so forget it */ + return; + } + + _capture_offset = _io->input_latency(); +} + +void +DiskStream::set_persistent_align_style (AlignStyle a) +{ + _persistent_alignment_style = a; +} + +void +DiskStream::set_align_style_from_io () +{ + bool have_physical = false; + + if (_io == 0) { + return; + } + + get_input_sources (); + + for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) { + if ((*chan).source && (*chan).source->flags() & JackPortIsPhysical) { + have_physical = true; + break; + } + } + + if (have_physical) { + set_align_style (ExistingMaterial); + } else { + set_align_style (CaptureTime); + } +} + +void +DiskStream::set_align_style (AlignStyle a) +{ + if (record_enabled() && _session.actively_recording()) { + return; + } + + + if (a != _alignment_style) { + _alignment_style = a; + AlignmentStyleChanged (); + } +} + +int +DiskStream::add_channel () +{ + /* XXX need to take lock??? */ + + ChannelInfo chan; + + init_channel (chan); + + chan.speed_buffer = new Sample[speed_buffer_size]; + chan.playback_wrap_buffer = new Sample[wrap_buffer_size]; + chan.capture_wrap_buffer = new Sample[wrap_buffer_size]; + + channels.push_back (chan); + + _n_channels = channels.size(); + + return 0; +} + +int +DiskStream::remove_channel () +{ + if (channels.size() > 1) { + /* XXX need to take lock??? */ + ChannelInfo & chan = channels.back(); + destroy_channel (chan); + channels.pop_back(); + + _n_channels = channels.size(); + return 0; + } + + return -1; +} + +float +DiskStream::playback_buffer_load () const +{ + return (float) ((double) channels.front().playback_buf->read_space()/ + (double) channels.front().playback_buf->bufsize()); +} + +float +DiskStream::capture_buffer_load () const +{ + return (float) ((double) channels.front().capture_buf->write_space()/ + (double) channels.front().capture_buf->bufsize()); +} + +int +DiskStream::set_loop (Location *location) +{ + if (location) { + if (location->start() >= location->end()) { + error << compose(_("Location \"%1\" not valid for track loop (start >= end)"), location->name()) << endl; + return -1; + } + } + + loop_location = location; + + LoopSet (location); /* EMIT SIGNAL */ + return 0; +} + +jack_nframes_t +DiskStream::get_capture_start_frame (uint32_t n) +{ + LockMonitor lm (capture_info_lock, __LINE__, __FILE__); + + if (capture_info.size() > n) { + return capture_info[n]->start; + } + else { + return capture_start_frame; + } +} + +jack_nframes_t +DiskStream::get_captured_frames (uint32_t n) +{ + LockMonitor lm (capture_info_lock, __LINE__, __FILE__); + + if (capture_info.size() > n) { + return capture_info[n]->frames; + } + else { + return capture_captured; + } +} + +void +DiskStream::punch_in () +{ +} + +void +DiskStream::punch_out () +{ +} + +int +DiskStream::use_pending_capture_data (XMLNode& node) +{ + const XMLProperty* prop; + XMLNodeList nlist = node.children(); + XMLNodeIterator niter; + FileSource* fs; + FileSource* first_fs = 0; + AudioRegion::SourceList pending_sources; + jack_nframes_t position; + + if ((prop = node.property (X_("at"))) == 0) { + return -1; + } + + if (sscanf (prop->value().c_str(), "%" PRIu32, &position) != 1) { + return -1; + } + + for (niter = nlist.begin(); niter != nlist.end(); ++niter) { + if ((*niter)->name() == X_("file")) { + + if ((prop = (*niter)->property (X_("path"))) == 0) { + continue; + } + + try { + fs = new FileSource (prop->value(), _session.frame_rate(), true); + } + + catch (failed_constructor& err) { + error << compose (_("%1: cannot restore pending capture source file %2"), + _name, prop->value()) + << endmsg; + return -1; + } + + pending_sources.push_back (fs); + + if (first_fs == 0) { + first_fs = fs; + } + + fs->set_captured_for (_name); + } + } + + if (pending_sources.size() == 0) { + /* nothing can be done */ + return 1; + } + + if (pending_sources.size() != _n_channels) { + error << compose (_("%1: incorrect number of pending sources listed - ignoring them all"), _name) + << endmsg; + return -1; + } + + AudioRegion* region; + + try { + region = new AudioRegion (pending_sources, 0, first_fs->length(), + region_name_from_path (first_fs->name()), + 0, AudioRegion::Flag (AudioRegion::DefaultFlags|AudioRegion::Automatic|AudioRegion::WholeFile)); + + region->special_set_position (0); + } + + catch (failed_constructor& err) { + error << compose (_("%1: cannot create whole-file region from pending capture sources"), + _name) + << endmsg; + + return -1; + } + + try { + region = new AudioRegion (pending_sources, 0, first_fs->length(), region_name_from_path (first_fs->name())); + } + + catch (failed_constructor& err) { + error << compose (_("%1: cannot create region from pending capture sources"), + _name) + << endmsg; + + return -1; + } + + _playlist->add_region (*region, position); + + return 0; +} + +void +DiskStream::set_roll_delay (jack_nframes_t nframes) +{ + _roll_delay = nframes; +} |