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Diffstat (limited to 'libs/ardour/lv2_plugin.cc')
-rw-r--r--libs/ardour/lv2_plugin.cc11
1 files changed, 8 insertions, 3 deletions
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index 4f3964eaa5..e5b8ffd91e 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -309,7 +309,6 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate)
_latency_control_port = 0;
_next_cycle_start = std::numeric_limits<framepos_t>::max();
_next_cycle_speed = 1.0;
- _block_length = _engine.samples_per_cycle();
_seq_size = _engine.raw_buffer_size(DataType::MIDI);
_state_version = 0;
_was_activated = false;
@@ -355,11 +354,17 @@ LV2Plugin::init(const void* c_plugin, framecnt_t rate)
#ifdef HAVE_LV2_1_2_0
LV2_URID atom_Int = _uri_map.uri_to_id(LV2_ATOM__Int);
+ static const int32_t _min_block_length = 1; // may happen during split-cycles
+ static const int32_t _max_block_length = 8192; // max possible (with all engines and during export)
+ /* @drobilla: Does it make sense to re-instantiate all plugins
+ * whenever the buffersize changes?
+ * Is there a way to find plugins that require the min/max blocksize option?
+ */
LV2_Options_Option options[] = {
{ LV2_OPTIONS_INSTANCE, 0, _uri_map.uri_to_id(LV2_BUF_SIZE__minBlockLength),
- sizeof(int32_t), atom_Int, &_block_length },
+ sizeof(int32_t), atom_Int, &_min_block_length },
{ LV2_OPTIONS_INSTANCE, 0, _uri_map.uri_to_id(LV2_BUF_SIZE__maxBlockLength),
- sizeof(int32_t), atom_Int, &_block_length },
+ 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, 0, 0, 0, NULL }