280 lines
7.4 KiB
C++
280 lines
7.4 KiB
C++
/*
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Copyright (C) 2000-2006 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_audio_diskstream_h__
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#define __ardour_audio_diskstream_h__
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#include <cmath>
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#include <string>
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#include <queue>
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#include <map>
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#include <vector>
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#include <time.h>
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#include "pbd/fastlog.h"
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#include "pbd/ringbufferNPT.h"
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#include "pbd/stateful.h"
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#include "pbd/rcu.h"
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#include "ardour/ardour.h"
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#include "ardour/utils.h"
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#include "ardour/diskstream.h"
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#include "ardour/audioplaylist.h"
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#include "ardour/port.h"
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#include "ardour/interpolation.h"
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struct tm;
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namespace ARDOUR {
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class AudioEngine;
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class Send;
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class Session;
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class AudioPlaylist;
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class AudioFileSource;
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class IO;
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class AudioDiskstream : public Diskstream
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{
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public:
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AudioDiskstream (Session &, const std::string& name, Diskstream::Flag f = Recordable);
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AudioDiskstream (Session &, const XMLNode&);
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~AudioDiskstream();
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float playback_buffer_load() const;
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float capture_buffer_load() const;
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std::string input_source (uint32_t n=0) const {
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boost::shared_ptr<ChannelList> c = channels.reader();
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if (n < c->size()) {
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return (*c)[n]->source ? (*c)[n]->source->name() : "";
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} else {
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return "";
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}
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}
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Port *input_source_port (uint32_t n=0) const {
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boost::shared_ptr<ChannelList> c = channels.reader();
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if (n < c->size()) return (*c)[n]->source; return 0;
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}
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void set_record_enabled (bool yn);
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int set_destructive (bool yn);
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int set_non_layered (bool yn);
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bool can_become_destructive (bool& requires_bounce) const;
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float peak_power(uint32_t n = 0) {
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boost::shared_ptr<ChannelList> c = channels.reader();
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ChannelInfo* chaninfo = (*c)[n];
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float x = chaninfo->peak_power;
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chaninfo->peak_power = 0.0f;
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if (x > 0.0f) {
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return 20.0f * fast_log10(x);
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} else {
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return minus_infinity();
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}
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}
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boost::shared_ptr<AudioPlaylist> audio_playlist () { return boost::dynamic_pointer_cast<AudioPlaylist>(_playlist); }
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int use_playlist (boost::shared_ptr<Playlist>);
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int use_new_playlist ();
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int use_copy_playlist ();
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Sample *playback_buffer (uint32_t n = 0) {
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boost::shared_ptr<ChannelList> c = channels.reader();
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if (n < c->size())
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return (*c)[n]->current_playback_buffer;
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return 0;
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}
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Sample *capture_buffer (uint32_t n = 0) {
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boost::shared_ptr<ChannelList> c = channels.reader();
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if (n < c->size())
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return (*c)[n]->current_capture_buffer;
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return 0;
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}
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boost::shared_ptr<AudioFileSource> write_source (uint32_t n=0) {
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boost::shared_ptr<ChannelList> c = channels.reader();
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if (n < c->size())
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return (*c)[n]->write_source;
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return boost::shared_ptr<AudioFileSource>();
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}
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int add_channel (uint32_t how_many);
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int remove_channel (uint32_t how_many);
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/* stateful */
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XMLNode& get_state(void);
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int set_state(const XMLNode& node, int version);
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void monitor_input (bool);
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static void swap_by_ptr (Sample *first, Sample *last) {
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while (first < last) {
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Sample tmp = *first;
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*first++ = *last;
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*last-- = tmp;
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}
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}
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static void swap_by_ptr (Sample *first, Sample *last, nframes_t n) {
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while (n--) {
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Sample tmp = *first;
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*first++ = *last;
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*last-- = tmp;
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}
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}
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CubicInterpolation interpolation;
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XMLNode* deprecated_io_node;
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protected:
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friend class Session;
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/* the Session is the only point of access for these
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because they require that the Session is "inactive"
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while they are called.
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*/
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void set_pending_overwrite(bool);
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int overwrite_existing_buffers ();
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void set_block_size (nframes_t);
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int internal_playback_seek (nframes_t distance);
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int can_internal_playback_seek (nframes_t distance);
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int rename_write_sources ();
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void reset_write_sources (bool, bool force = false);
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void non_realtime_input_change ();
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void non_realtime_locate (nframes_t location);
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protected:
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friend class Auditioner;
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int seek (nframes_t which_sample, bool complete_refill = false);
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protected:
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friend class AudioTrack;
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int process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input);
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bool commit (nframes_t nframes);
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private:
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struct ChannelInfo {
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ChannelInfo (nframes_t buffer_size, nframes_t speed_buffer_size, nframes_t wrap_buffer_size);
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~ChannelInfo ();
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Sample *playback_wrap_buffer;
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Sample *capture_wrap_buffer;
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Sample *speed_buffer;
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float peak_power;
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boost::shared_ptr<AudioFileSource> fades_source;
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boost::shared_ptr<AudioFileSource> write_source;
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/// the Port that our audio data comes from
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Port *source;
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Sample *current_capture_buffer;
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Sample *current_playback_buffer;
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RingBufferNPT<Sample> *playback_buf;
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RingBufferNPT<Sample> *capture_buf;
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Sample* scrub_buffer;
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Sample* scrub_forward_buffer;
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Sample* scrub_reverse_buffer;
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RingBufferNPT<Sample>::rw_vector playback_vector;
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RingBufferNPT<Sample>::rw_vector capture_vector;
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RingBufferNPT<CaptureTransition> * capture_transition_buf;
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// the following are used in the butler thread only
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nframes_t curr_capture_cnt;
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};
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typedef std::vector<ChannelInfo*> ChannelList;
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void process_varispeed_playback(nframes_t nframes, boost::shared_ptr<ChannelList> c);
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/* The two central butler operations */
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int do_flush (RunContext context, bool force = false);
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int do_refill () { return _do_refill(_mixdown_buffer, _gain_buffer); }
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int do_refill_with_alloc ();
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int read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer,
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nframes_t& start, nframes_t cnt,
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ChannelInfo* channel_info, int channel, bool reversed);
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void finish_capture (bool rec_monitors_input, boost::shared_ptr<ChannelList>);
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void transport_stopped (struct tm&, time_t, bool abort);
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void transport_looped (nframes_t transport_frame);
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void init (Diskstream::Flag);
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void init_channel (ChannelInfo &chan);
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void destroy_channel (ChannelInfo &chan);
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int use_new_write_source (uint32_t n=0);
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int find_and_use_playlist (const std::string &);
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void allocate_temporary_buffers ();
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int use_pending_capture_data (XMLNode& node);
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void get_input_sources ();
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void prepare_record_status(nframes_t capture_start_frame);
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void set_align_style_from_io();
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void setup_destructive_playlist ();
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void use_destructive_playlist ();
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void engage_record_enable ();
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void disengage_record_enable ();
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// Working buffers for do_refill (butler thread)
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static void allocate_working_buffers();
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static void free_working_buffers();
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static size_t _working_buffers_size;
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static Sample* _mixdown_buffer;
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static gain_t* _gain_buffer;
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std::vector<boost::shared_ptr<AudioFileSource> > capturing_sources;
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SerializedRCUManager<ChannelList> channels;
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/* really */
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private:
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int _do_refill (Sample *mixdown_buffer, float *gain_buffer);
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int add_channel_to (boost::shared_ptr<ChannelList>, uint32_t how_many);
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int remove_channel_from (boost::shared_ptr<ChannelList>, uint32_t how_many);
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};
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} // namespace ARDOUR
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#endif /* __ardour_audio_diskstream_h__ */
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