export_profile_manager.cc

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/*
    Copyright (C) 2008 Paul Davis
    Author: Sakari Bergen

    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.

*/

#include <cassert>
#include <stdexcept>
#include <cerrno>

#include <glib.h>
#include <glib/gstdio.h>

#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>

#include "pbd/enumwriter.h"
#include "pbd/xml++.h"
#include "pbd/convert.h"

#include "ardour/export_profile_manager.h"
#include "ardour/export_format_specification.h"
#include "ardour/search_paths.h"
#include "ardour/export_timespan.h"
#include "ardour/export_channel_configuration.h"
#include "ardour/export_filename.h"
#include "ardour/export_preset.h"
#include "ardour/export_handler.h"
#include "ardour/export_failed.h"
#include "ardour/directory_names.h"
#include "ardour/filename_extensions.h"
#include "ardour/route.h"
#include "ardour/session.h"
#include "ardour/broadcast_info.h"

#include "i18n.h"

using namespace std;
using namespace Glib;
using namespace PBD;

namespace ARDOUR
{

ExportProfileManager::ExportProfileManager (Session & s, ExportType type)
  : type(type)
  , handler (s.get_export_handler())
  , session (s)

  , ranges (new LocationList ())
  , single_range_mode (false)

  , format_list (new FormatList ())
{
        switch(type) {
        case RegularExport:
                xml_node_name = X_("ExportProfile");
                break;
        case RangeExport:
                xml_node_name = X_("RangeExportProfile");
                break;
        case SelectionExport:
                xml_node_name = X_("SelectionExportProfile");
                break;
        case RegionExport:
                xml_node_name = X_("RegionExportProfile");
                break;
        case StemExport:
                xml_node_name = X_("StemExportProfile");
                break;
        }

        /* Initialize path variables */

        export_config_dir = Glib::build_filename (user_config_directory(), export_dir_name);

        search_path += export_formats_search_path();

        info << string_compose (_("Searching for export formats in %1"), search_path.to_string()) << endmsg;

        /* create export config directory if necessary */

        if (!Glib::file_test (export_config_dir, Glib::FILE_TEST_EXISTS)) {
                if (g_mkdir_with_parents (export_config_dir.c_str(), 0755) != 0) {
                        error << string_compose (_("Unable to create export format directory %1: %2"), export_config_dir, g_strerror(errno)) << endmsg;
                }
        }

        load_presets ();
        load_formats ();

        /* Initialize all lists with an empty config */

        XMLNodeList dummy;
        init_timespans (dummy);
        init_channel_configs (dummy);
        init_formats (dummy);
        init_filenames (dummy);
}

ExportProfileManager::~ExportProfileManager ()
{
        XMLNode * extra_xml (new XMLNode (xml_node_name));
        serialize_profile (*extra_xml);
        session.add_extra_xml (*extra_xml);
}

void
ExportProfileManager::load_profile ()
{
        XMLNode * extra_node = session.extra_xml (xml_node_name);
        /* Legacy sessions used Session instant.xml for this */
        if (!extra_node) {
                extra_node = session.instant_xml (xml_node_name);
        }

        if (extra_node) {
                set_state (*extra_node);
        } else {
                XMLNode empty_node (xml_node_name);
                set_state (empty_node);
        }
}

void
ExportProfileManager::prepare_for_export ()
{
        TimespanListPtr ts_list = timespans.front()->timespans;

        FormatStateList::const_iterator format_it;
        FilenameStateList::const_iterator filename_it;

        // For each timespan
        for (TimespanList::iterator ts_it = ts_list->begin(); ts_it != ts_list->end(); ++ts_it) {
                // ..., each format-filename pair
                for (format_it = formats.begin(), filename_it = filenames.begin();
                     format_it != formats.end() && filename_it != filenames.end();
                     ++format_it, ++filename_it) {

                        ExportFilenamePtr filename = (*filename_it)->filename;
//                      filename->include_timespan = (ts_list->size() > 1); Disabled for now...

                        boost::shared_ptr<BroadcastInfo> b;
                        if ((*format_it)->format->has_broadcast_info()) {
                                b.reset (new BroadcastInfo);
                                b->set_from_session (session, (*ts_it)->get_start());
                        }

                        // ...and each channel config
                        filename->include_channel_config = (type == StemExport) ||
                                                           (channel_configs.size() > 1);
                        for(ChannelConfigStateList::iterator cc_it = channel_configs.begin(); cc_it != channel_configs.end(); ++cc_it) {
                                handler->add_export_config (*ts_it, (*cc_it)->config, (*format_it)->format, filename, b);
                        }
                }
        }
}

bool
ExportProfileManager::load_preset (ExportPresetPtr preset)
{
        bool ok = true;

        current_preset = preset;
        if (!preset) { return false; }

        XMLNode const * state;
        if ((state = preset->get_local_state())) {
                set_local_state (*state);
        } else { ok = false; }

        if ((state = preset->get_global_state())) {
                if (!set_global_state (*state)) {
                        ok = false;
                }
        } else { ok = false; }

        return ok;
}

void
ExportProfileManager::load_presets ()
{
        vector<std::string> found = find_file (string_compose (X_("*%1"),export_preset_suffix));

        for (vector<std::string>::iterator it = found.begin(); it != found.end(); ++it) {
                load_preset_from_disk (*it);
        }
}

std::string
ExportProfileManager::preset_filename (std::string const & preset_name)
{
        string safe_name = legalize_for_path (preset_name);
        return Glib::build_filename (export_config_dir, safe_name + export_preset_suffix);
}

ExportPresetPtr
ExportProfileManager::new_preset (string const & name)
{
        // Generate new ID and do regular save
        string filename = preset_filename (name);
        current_preset.reset (new ExportPreset (filename, session));
        preset_list.push_back (current_preset);
        return save_preset (name);
}

ExportPresetPtr
ExportProfileManager::save_preset (string const & name)
{
        string filename = preset_filename (name);

        if (!current_preset) {
                current_preset.reset (new ExportPreset (filename, session));
                preset_list.push_back (current_preset);
        }

        XMLNode * global_preset = new XMLNode ("ExportPreset");
        XMLNode * local_preset = new XMLNode ("ExportPreset");

        serialize_global_profile (*global_preset);
        serialize_local_profile (*local_preset);

        current_preset->set_name (name);
        current_preset->set_global_state (*global_preset);
        current_preset->set_local_state (*local_preset);

        current_preset->save (filename);

        return current_preset;
}

void
ExportProfileManager::remove_preset ()
{
        if (!current_preset) { return; }

        for (PresetList::iterator it = preset_list.begin(); it != preset_list.end(); ++it) {
                if (*it == current_preset) {
                        preset_list.erase (it);
                        break;
                }
        }

        FileMap::iterator it = preset_file_map.find (current_preset->id());
        if (it != preset_file_map.end()) {
                if (g_remove (it->second.c_str()) != 0) {
                        error << string_compose (_("Unable to remove export preset %1: %2"), it->second, g_strerror(errno)) << endmsg;
                }
                preset_file_map.erase (it);
        }

        current_preset->remove_local();
        current_preset.reset();
}

void
ExportProfileManager::load_preset_from_disk (std::string const & path)
{
        ExportPresetPtr preset (new ExportPreset (path, session));

        /* Handle id to filename mapping and don't add duplicates to list */

        FilePair pair (preset->id(), path);
        if (preset_file_map.insert (pair).second) {
                preset_list.push_back (preset);
        }
}

bool
ExportProfileManager::set_state (XMLNode const & root)
{
        return set_global_state (root) & set_local_state (root);
}

bool
ExportProfileManager::set_global_state (XMLNode const & root)
{
        return init_filenames (root.children ("ExportFilename")) &
               init_formats (root.children ("ExportFormat"));
}

bool
ExportProfileManager::set_local_state (XMLNode const & root)
{
        return init_timespans (root.children ("ExportTimespan")) &
               init_channel_configs (root.children ("ExportChannelConfiguration"));
}

void
ExportProfileManager::serialize_profile (XMLNode & root)
{
        serialize_local_profile (root);
        serialize_global_profile (root);
}

void
ExportProfileManager::serialize_global_profile (XMLNode & root)
{
        for (FormatStateList::iterator it = formats.begin(); it != formats.end(); ++it) {
                root.add_child_nocopy (serialize_format (*it));
        }

        for (FilenameStateList::iterator it = filenames.begin(); it != filenames.end(); ++it) {
                root.add_child_nocopy ((*it)->filename->get_state());
        }
}

void
ExportProfileManager::serialize_local_profile (XMLNode & root)
{
        for (TimespanStateList::iterator it = timespans.begin(); it != timespans.end(); ++it) {
                root.add_child_nocopy (serialize_timespan (*it));
        }

        for (ChannelConfigStateList::iterator it = channel_configs.begin(); it != channel_configs.end(); ++it) {
                root.add_child_nocopy ((*it)->config->get_state());
        }
}

std::vector<std::string>
ExportProfileManager::find_file (std::string const & pattern)
{
        vector<std::string> found;

        find_files_matching_pattern (found, search_path, pattern);

        return found;
}

void
ExportProfileManager::set_selection_range (framepos_t start, framepos_t end)
{

        if (start || end) {
                selection_range.reset (new Location (session));
                selection_range->set_name (_("Selection"));
                selection_range->set (start, end);
        } else {
                selection_range.reset();
        }

        for (TimespanStateList::iterator it = timespans.begin(); it != timespans.end(); ++it) {
                (*it)->selection_range = selection_range;
        }
}

std::string
ExportProfileManager::set_single_range (framepos_t start, framepos_t end, string name)
{
        single_range_mode = true;

        single_range.reset (new Location (session));
        single_range->set_name (name);
        single_range->set (start, end);

        update_ranges ();

        return single_range->id().to_s();
}

bool
ExportProfileManager::init_timespans (XMLNodeList nodes)
{
        timespans.clear ();
        update_ranges ();

        bool ok = true;
        for (XMLNodeList::const_iterator it = nodes.begin(); it != nodes.end(); ++it) {
                TimespanStatePtr span = deserialize_timespan (**it);
                if (span) {
                        timespans.push_back (span);
                } else { ok = false; }
        }

        if (timespans.empty()) {
                TimespanStatePtr state (new TimespanState (selection_range, ranges));
                timespans.push_back (state);

                // Add session as default selection
                Location * session_range = session.locations()->session_range_location();
                if (!session_range) { return false; }

                ExportTimespanPtr timespan = handler->add_timespan();
                timespan->set_name (session_range->name());
                timespan->set_range_id (session_range->id().to_s());
                timespan->set_range (session_range->start(), session_range->end());
                state->timespans->push_back (timespan);
                return false;
        }

        return ok;
}

ExportProfileManager::TimespanStatePtr
ExportProfileManager::deserialize_timespan (XMLNode & root)
{
        TimespanStatePtr state (new TimespanState (selection_range, ranges));
        XMLProperty const * prop;

        XMLNodeList spans = root.children ("Range");
        for (XMLNodeList::iterator node_it = spans.begin(); node_it != spans.end(); ++node_it) {

                prop = (*node_it)->property ("id");
                if (!prop) { continue; }
                string id = prop->value();

                Location * location = 0;
                for (LocationList::iterator it = ranges->begin(); it != ranges->end(); ++it) {
                        if ((id == "selection" && *it == selection_range.get()) ||
                            (id == (*it)->id().to_s())) {
                                location = *it;
                                break;
                        }
                }

                if (!location) { continue; }

                ExportTimespanPtr timespan = handler->add_timespan();
                timespan->set_name (location->name());
                timespan->set_range_id (location->id().to_s());
                timespan->set_range (location->start(), location->end());
                state->timespans->push_back (timespan);
        }

        if ((prop = root.property ("format"))) {
                state->time_format = (TimeFormat) string_2_enum (prop->value(), TimeFormat);
        }

        if (state->timespans->empty()) {
                return TimespanStatePtr();
        }

        return state;
}

XMLNode &
ExportProfileManager::serialize_timespan (TimespanStatePtr state)
{
        XMLNode & root = *(new XMLNode ("ExportTimespan"));
        XMLNode * span;

        update_ranges ();
        for (TimespanList::iterator it = state->timespans->begin(); it != state->timespans->end(); ++it) {
                if ((span = root.add_child ("Range"))) {
                        span->add_property ("id", (*it)->range_id());
                }
        }

        root.add_property ("format", enum_2_string (state->time_format));

        return root;
}

void
ExportProfileManager::update_ranges () {
        ranges->clear();

        if (single_range_mode) {
                ranges->push_back (single_range.get());
                return;
        }

        /* Session */

        Location * session_range = session.locations()->session_range_location();
        if (session_range) {
                ranges->push_back (session_range);
        }

        /* Selection */

        if (selection_range) {
                ranges->push_back (selection_range.get());
        }

        /* ranges */

        LocationList const & list (session.locations()->list());
        for (LocationList::const_iterator it = list.begin(); it != list.end(); ++it) {
                if ((*it)->is_range_marker()) {
                        ranges->push_back (*it);
                }
        }
}

ExportProfileManager::ChannelConfigStatePtr
ExportProfileManager::add_channel_config ()
{
        ChannelConfigStatePtr ptr(new ChannelConfigState(handler->add_channel_config()));
        channel_configs.push_back(ptr);
        return ptr;
}

bool
ExportProfileManager::init_channel_configs (XMLNodeList nodes)
{
        channel_configs.clear();

        if (nodes.empty()) {
                ChannelConfigStatePtr config (new ChannelConfigState (handler->add_channel_config()));
                channel_configs.push_back (config);

                // Add master outs as default
                if (!session.master_out()) { return false; }

                IO* master_out = session.master_out()->output().get();
                if (!master_out) { return false; }

                for (uint32_t n = 0; n < master_out->n_ports().n_audio(); ++n) {
                        PortExportChannel * channel = new PortExportChannel ();
                        channel->add_port (master_out->audio (n));

                        ExportChannelPtr chan_ptr (channel);
                        config->config->register_channel (chan_ptr);
                }
                return false;
        }

        for (XMLNodeList::const_iterator it = nodes.begin(); it != nodes.end(); ++it) {
                ChannelConfigStatePtr config (new ChannelConfigState (handler->add_channel_config()));
                config->config->set_state (**it);
                channel_configs.push_back (config);
        }

        return true;
}

ExportProfileManager::FormatStatePtr
ExportProfileManager::duplicate_format_state (FormatStatePtr state)
{
        /* Note: The pointer in the new FormatState should point to the same format spec
                 as the original state's pointer. The spec itself should not be copied!   */

        FormatStatePtr format (new FormatState (format_list, state->format));
        formats.push_back (format);
        return format;
}

void
ExportProfileManager::remove_format_state (FormatStatePtr state)
{
        for (FormatStateList::iterator it = formats.begin(); it != formats.end(); ++it) {
                if (*it == state) {
                        formats.erase (it);
                        return;
                }
        }
}

std::string
ExportProfileManager::save_format_to_disk (ExportFormatSpecPtr format)
{
        // TODO filename character stripping

        /* Get filename for file */

        string new_name = format->name();
        new_name += export_format_suffix;

        /* make sure its legal for the filesystem */

        new_name = legalize_for_path (new_name);

        std::string new_path = Glib::build_filename (export_config_dir, new_name);

        /* Check if format is on disk already */
        FileMap::iterator it;
        if ((it = format_file_map.find (format->id())) != format_file_map.end()) {

                /* Check if config is not in user config dir */
                if (Glib::path_get_dirname (it->second) != export_config_dir) {

                        /* Write new file */

                        XMLTree tree (new_path);
                        tree.set_root (&format->get_state());
                        tree.write();

                } else {

                        /* Update file and rename if necessary */

                        XMLTree tree (it->second);
                        tree.set_root (&format->get_state());
                        tree.write();

                        if (new_name != Glib::path_get_basename (it->second)) {
                                if (g_rename (it->second.c_str(), new_path.c_str()) != 0) {
                                        error << string_compose (_("Unable to rename export format %1 to %2: %3"), it->second, new_path, g_strerror(errno)) << endmsg;
                                };
                        }
                }

                it->second = new_path;

        } else {
                /* Write new file */

                XMLTree tree (new_path);
                tree.set_root (&format->get_state());
                tree.write();
        }

        FormatListChanged ();
        return new_path;
}

void
ExportProfileManager::remove_format_profile (ExportFormatSpecPtr format)
{
        for (FormatList::iterator it = format_list->begin(); it != format_list->end(); ++it) {
                if (*it == format) {
                        format_list->erase (it);
                        break;
                }
        }

        FileMap::iterator it = format_file_map.find (format->id());
        if (it != format_file_map.end()) {
                if (g_remove (it->second.c_str()) != 0) {
                        error << string_compose (_("Unable to remove export profile %1: %2"), it->second, g_strerror(errno)) << endmsg;
                        return;
                }
                format_file_map.erase (it);
        }

        FormatListChanged ();
}

ExportFormatSpecPtr
ExportProfileManager::get_new_format (ExportFormatSpecPtr original)
{
        ExportFormatSpecPtr format;
        if (original) {
                format.reset (new ExportFormatSpecification (*original));
                std::cerr << "After new format created from original, format has id [" << format->id().to_s() << ']' << std::endl;
        } else {
                format = handler->add_format();
                format->set_name (_("empty format"));
        }

        std::string path = save_format_to_disk (format);
        FilePair pair (format->id(), path);
        format_file_map.insert (pair);

        format_list->push_back (format);
        FormatListChanged ();

        return format;
}

bool
ExportProfileManager::init_formats (XMLNodeList nodes)
{
        formats.clear();

        bool ok = true;
        for (XMLNodeList::const_iterator it = nodes.begin(); it != nodes.end(); ++it) {
                FormatStatePtr format = deserialize_format (**it);
                if (format) {
                        formats.push_back (format);
                } else { ok = false; }
        }

        if (formats.empty ()) {
                FormatStatePtr format (new FormatState (format_list, ExportFormatSpecPtr ()));
                formats.push_back (format);
                return false;
        }

        return ok;
}

ExportProfileManager::FormatStatePtr
ExportProfileManager::deserialize_format (XMLNode & root)
{
        XMLProperty * prop;
        PBD::UUID id;

        if ((prop = root.property ("id"))) {
                id = prop->value();
        }

        for (FormatList::iterator it = format_list->begin(); it != format_list->end(); ++it) {
                if ((*it)->id() == id) {
                        return FormatStatePtr (new FormatState (format_list, *it));
                }
        }

        return FormatStatePtr ();
}

XMLNode &
ExportProfileManager::serialize_format (FormatStatePtr state)
{
        XMLNode * root = new XMLNode ("ExportFormat");

        string id = state->format ? state->format->id().to_s() : "";
        root->add_property ("id", id);

        return *root;
}

void
ExportProfileManager::load_formats ()
{
        vector<std::string> found = find_file (string_compose ("*%1", export_format_suffix));

        for (vector<std::string>::iterator it = found.begin(); it != found.end(); ++it) {
                load_format_from_disk (*it);
        }
}

void
ExportProfileManager::load_format_from_disk (std::string const & path)
{
        XMLTree tree;

        if (!tree.read (path)) {
                error << string_compose (_("Cannot load export format from %1"), path) << endmsg;
                return;
        }

        XMLNode* root = tree.root();
        if (!root) {
                error << string_compose (_("Cannot export format read from %1"), path) << endmsg;
                return;
        }

        ExportFormatSpecPtr format = handler->add_format (*root);

        /* Handle id to filename mapping and don't add duplicates to list */

        FilePair pair (format->id(), path);
        if (format_file_map.insert (pair).second) {
                format_list->push_back (format);
        }

        FormatListChanged ();
}

ExportProfileManager::FilenameStatePtr
ExportProfileManager::duplicate_filename_state (FilenameStatePtr state)
{
        FilenameStatePtr filename (new FilenameState (handler->add_filename_copy (state->filename)));
        filenames.push_back (filename);
        return filename;
}

void
ExportProfileManager::remove_filename_state (FilenameStatePtr state)
{
        for (FilenameStateList::iterator it = filenames.begin(); it != filenames.end(); ++it) {
                if (*it == state) {
                        filenames.erase (it);
                        return;
                }
        }
}

std::string
ExportProfileManager::get_sample_filename_for_format (ExportFilenamePtr filename, ExportFormatSpecPtr format)
{
        assert (format);
        
        if (channel_configs.empty()) { return ""; }

        std::list<string> filenames;
        build_filenames (filenames, filename, timespans.front()->timespans,
                         channel_configs.front()->config, format);

        if (filenames.empty()) { return ""; }
        return filenames.front();
}

bool
ExportProfileManager::init_filenames (XMLNodeList nodes)
{
        filenames.clear ();

        for (XMLNodeList::const_iterator it = nodes.begin(); it != nodes.end(); ++it) {
                ExportFilenamePtr filename = handler->add_filename();
                filename->set_state (**it);
                filenames.push_back (FilenameStatePtr (new FilenameState (filename)));
        }

        if (filenames.empty()) {
                FilenameStatePtr filename (new FilenameState (handler->add_filename()));
                filenames.push_back (filename);
                return false;
        }

        return true;
}

boost::shared_ptr<ExportProfileManager::Warnings>
ExportProfileManager::get_warnings ()
{
        boost::shared_ptr<Warnings> warnings (new Warnings ());

        ChannelConfigStatePtr channel_config_state;
        if (!channel_configs.empty ()) {
                channel_config_state = channel_configs.front();
        }
        
        TimespanStatePtr timespan_state = timespans.front();

        /*** Check "global" config ***/

        TimespanListPtr timespans = timespan_state->timespans;

        ExportChannelConfigPtr channel_config;
        if (channel_config_state) {
                channel_config = channel_config_state->config;
        }

        /* Check Timespans are not empty */

        if (timespans->empty()) {
                warnings->errors.push_back (_("No timespan has been selected!"));
        }

        if (channel_config_state == 0) {
                warnings->errors.push_back (_("No channels have been selected!"));
        } else {
                /* Check channel config ports */
                if (!channel_config->all_channels_have_ports ()) {
                        warnings->warnings.push_back (_("Some channels are empty"));
                }
        }

        /*** Check files ***/

        if (channel_config_state) {
                FormatStateList::const_iterator format_it;
                FilenameStateList::const_iterator filename_it;
                for (format_it = formats.begin(), filename_it = filenames.begin();
                     format_it != formats.end() && filename_it != filenames.end();
                     ++format_it, ++filename_it) {
                        check_config (warnings, timespan_state, channel_config_state, *format_it, *filename_it);
                }
        }
        
        return warnings;
}

void
ExportProfileManager::check_config (boost::shared_ptr<Warnings> warnings,
                                    TimespanStatePtr timespan_state,
                                    ChannelConfigStatePtr channel_config_state,
                                    FormatStatePtr format_state,
                                    FilenameStatePtr filename_state)
{
        TimespanListPtr timespans = timespan_state->timespans;
        ExportChannelConfigPtr channel_config = channel_config_state->config;
        ExportFormatSpecPtr format = format_state->format;
        ExportFilenamePtr filename = filename_state->filename;

        /* Check format and maximum channel count */
        if (!format || !format->type()) {
                warnings->errors.push_back (_("No format selected!"));
        } else if (!channel_config->get_n_chans()) {
                warnings->errors.push_back (_("All channels are empty!"));
        } else if (!check_format (format, channel_config->get_n_chans())) {
                warnings->errors.push_back (_("One or more of the selected formats is not compatible with this system!"));
        } else if (format->channel_limit() < channel_config->get_n_chans()) {
                warnings->errors.push_back
                  (string_compose (_("%1 supports only %2 channels, but you have %3 channels in your channel configuration"),
                                     format->format_name(),
                                     format->channel_limit(),
                                     channel_config->get_n_chans()));
        }

        if (!warnings->errors.empty()) { return; }

        /* Check filenames */

//      filename->include_timespan = (timespans->size() > 1); Disabled for now...

        std::list<string> paths;
        build_filenames(paths, filename, timespans, channel_config, format);

        for (std::list<string>::const_iterator path_it = paths.begin(); path_it != paths.end(); ++path_it) {

                string path = *path_it;

                if (Glib::file_test (path, Glib::FILE_TEST_EXISTS)) {
                        warnings->conflicting_filenames.push_back (path);
                }

                if (format->with_toc()) {
                        string marker_file = handler->get_cd_marker_filename(path, CDMarkerTOC);
                        if (Glib::file_test (marker_file, Glib::FILE_TEST_EXISTS)) {
                                warnings->conflicting_filenames.push_back (marker_file);
                        }
                }

                if (format->with_cue()) {
                        string marker_file = handler->get_cd_marker_filename(path, CDMarkerCUE);
                        if (Glib::file_test (marker_file, Glib::FILE_TEST_EXISTS)) {
                                warnings->conflicting_filenames.push_back (marker_file);
                        }
                }
        }
}

bool
ExportProfileManager::check_format (ExportFormatSpecPtr format, uint32_t channels)
{
        switch (format->type()) {
          case ExportFormatBase::T_Sndfile:
                return check_sndfile_format (format, channels);

          default:
                throw ExportFailed (X_("Invalid format given for ExportFileFactory::check!"));
        }
}

bool
ExportProfileManager::check_sndfile_format (ExportFormatSpecPtr format, unsigned int channels)
{
        SF_INFO sf_info;
        sf_info.channels = channels;
        sf_info.samplerate = format->sample_rate ();
        sf_info.format = format->format_id () | format->sample_format ();

        return (sf_format_check (&sf_info) == SF_TRUE ? true : false);
}

void
ExportProfileManager::build_filenames(std::list<std::string> & result, ExportFilenamePtr filename,
                                      TimespanListPtr timespans, ExportChannelConfigPtr channel_config,
                                      ExportFormatSpecPtr format)
{
        for (std::list<ExportTimespanPtr>::iterator timespan_it = timespans->begin();
             timespan_it != timespans->end(); ++timespan_it) {
                filename->set_timespan (*timespan_it);

                if (channel_config->get_split()) {
                        filename->include_channel = true;

                        for (uint32_t chan = 1; chan <= channel_config->get_n_chans(); ++chan) {
                                filename->set_channel (chan);
                                result.push_back(filename->get_path (format));
                        }

                } else {
                        filename->include_channel = false;
                        result.push_back(filename->get_path (format));
                }
        }
}

}; // namespace ARDOUR