+
+ boost::shared_ptr<ChannelNameSet> find_channel_name_set(
+ std::string model,
+ std::string custom_device_mode,
+ uint8_t channel) {
+ boost::shared_ptr<MIDI::Name::MasterDeviceNames> master_device = master_device_by_model(model);
+
+ if (master_device != 0 && custom_device_mode != "") {
+ return master_device->channel_name_set_by_channel(custom_device_mode, channel);
+ } else {
+ return boost::shared_ptr<ChannelNameSet>();
+ }
+ }
+
+ boost::shared_ptr<Patch> find_patch(
+ std::string model,
+ std::string custom_device_mode,
+ uint8_t channel,
+ PatchPrimaryKey patch_key) {
+
+ boost::shared_ptr<ChannelNameSet> channel_name_set = find_channel_name_set(model, custom_device_mode, channel);
+
+ if (channel_name_set) {
+ return channel_name_set->find_patch(patch_key);
+ } else {
+ return boost::shared_ptr<Patch>();
+ }
+ }
+
+ boost::shared_ptr<Patch> previous_patch(
+ std::string model,
+ std::string custom_device_mode,
+ uint8_t channel,
+ PatchPrimaryKey patch_key) {
+
+ boost::shared_ptr<ChannelNameSet> channel_name_set = find_channel_name_set(model, custom_device_mode, channel);
+
+ if (channel_name_set) {
+ return channel_name_set->previous_patch(patch_key);
+ } else {
+ return boost::shared_ptr<Patch>();
+ }
+ }
+
+ boost::shared_ptr<Patch> next_patch(
+ std::string model,
+ std::string custom_device_mode,
+ uint8_t channel,
+ PatchPrimaryKey patch_key) {
+
+ boost::shared_ptr<ChannelNameSet> channel_name_set = find_channel_name_set(model, custom_device_mode, channel);
+
+ if (channel_name_set) {
+ return channel_name_set->next_patch(patch_key);
+ } else {
+ return boost::shared_ptr<Patch>();
+ }
+ }
+
+ std::list<std::string> custom_device_mode_names_by_model(std::string model_name) {
+ if (model_name != "") {
+ if (master_device_by_model(model_name)) {
+ return master_device_by_model(model_name)->custom_device_mode_names();
+ }
+ }
+ return std::list<std::string>();
+ }
+