diff options
Diffstat (limited to 'libs/ardour/lv2_plugin.cc')
| -rw-r--r-- | libs/ardour/lv2_plugin.cc | 55 |
1 files changed, 45 insertions, 10 deletions
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc index 62a22bb4dc..13241f2a8b 100644 --- a/libs/ardour/lv2_plugin.cc +++ b/libs/ardour/lv2_plugin.cc @@ -158,6 +158,7 @@ public: #ifdef HAVE_LV2_1_2_0 LilvNode* bufz_powerOf2BlockLength; LilvNode* bufz_fixedBlockLength; + LilvNode* bufz_nominalBlockLength; #endif private: @@ -238,7 +239,9 @@ log_printf(LV2_Log_Handle handle, struct LV2Plugin::Impl { Impl() : plugin(0), ui(0), ui_type(0), name(0), author(0), instance(0) , work_iface(0) + , opts_iface(0) , state(0) + , block_length(0) {} /** Find the LV2 input port with the given designation. @@ -246,16 +249,18 @@ struct LV2Plugin::Impl { */ const LilvPort* designated_input (const char* uri, void** bufptrs[], void** bufptr); - const LilvPlugin* plugin; - const LilvUI* ui; - const LilvNode* ui_type; - LilvNode* name; - LilvNode* author; - LilvInstance* instance; - const LV2_Worker_Interface* work_iface; - LilvState* state; - LV2_Atom_Forge forge; - LV2_Atom_Forge ui_forge; + const LilvPlugin* plugin; + const LilvUI* ui; + const LilvNode* ui_type; + LilvNode* name; + LilvNode* author; + LilvInstance* instance; + const LV2_Worker_Interface* work_iface; + const LV2_Options_Interface* opts_iface; + LilvState* state; + LV2_Atom_Forge forge; + LV2_Atom_Forge ui_forge; + int32_t block_length; }; LV2Plugin::LV2Plugin (AudioEngine& engine, @@ -317,6 +322,7 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate) _state_version = 0; _was_activated = false; _has_state_interface = false; + _impl->block_length = _session.get_block_size(); _instance_access_feature.URI = "http://lv2plug.in/ns/ext/instance-access"; _data_access_feature.URI = "http://lv2plug.in/ns/ext/data-access"; @@ -374,6 +380,8 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate) sizeof(int32_t), atom_Int, &_max_block_length }, { LV2_OPTIONS_INSTANCE, 0, _uri_map.uri_to_id(LV2_BUF_SIZE__sequenceSize), sizeof(int32_t), atom_Int, &_seq_size }, + { LV2_OPTIONS_INSTANCE, 0, _uri_map.uri_to_id("http://lv2plug.in/ns/ext/buf-size#nominalBlockLength"), + sizeof(int32_t), atom_Int, &_impl->block_length }, { LV2_OPTIONS_INSTANCE, 0, 0, 0, 0, NULL } }; @@ -427,6 +435,14 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate) } lilv_node_free(worker_iface_uri); + + LilvNode* options_iface_uri = lilv_new_uri(_world.world, LV2_OPTIONS__interface); + if (lilv_plugin_has_extension_data(plugin, options_iface_uri)) { + _impl->opts_iface = (const LV2_Options_Interface*)extension_data( + LV2_OPTIONS__interface); + } + lilv_node_free(options_iface_uri); + if (lilv_plugin_has_feature(plugin, _world.lv2_inPlaceBroken)) { error << string_compose( _("LV2: \"%1\" cannot be used, since it cannot do inplace processing."), @@ -636,6 +652,23 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate) latency_compute_run(); } +int +LV2Plugin::set_block_size (pframes_t nframes) +{ +#ifdef HAVE_LV2_1_2_0 + if (_impl->opts_iface) { + LV2_URID atom_Int = _uri_map.uri_to_id(LV2_ATOM__Int); + _impl->block_length = nframes; + LV2_Options_Option block_size_option = { + LV2_OPTIONS_INSTANCE, 0, _uri_map.uri_to_id ("http://lv2plug.in/ns/ext/buf-size#nominalBlockLength"), + sizeof(int32_t), atom_Int, (void*)&_impl->block_length + }; + _impl->opts_iface->set (_impl->instance->lv2_handle, &block_size_option); + } +#endif + return 0; +} + LV2Plugin::~LV2Plugin () { DEBUG_TRACE(DEBUG::LV2, string_compose("%1 destroy\n", name())); @@ -2395,6 +2428,7 @@ LV2World::LV2World() #ifdef HAVE_LV2_1_2_0 bufz_powerOf2BlockLength = lilv_new_uri(world, LV2_BUF_SIZE__powerOf2BlockLength); bufz_fixedBlockLength = lilv_new_uri(world, LV2_BUF_SIZE__fixedBlockLength); + bufz_nominalBlockLength = lilv_new_uri(world, "http://lv2plug.in/ns/ext/buf-size#nominalBlockLength"); #endif } @@ -2402,6 +2436,7 @@ LV2World::LV2World() LV2World::~LV2World() { #ifdef HAVE_LV2_1_2_0 + lilv_node_free(bufz_nominalBlockLength); lilv_node_free(bufz_fixedBlockLength); lilv_node_free(bufz_powerOf2BlockLength); #endif |