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pass complete blocksize range to LV2 plugin. fixes #6498

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the buffersize may change anytime (split cycles),
also plugin analysis uses a 4096 sample window.
This commit is contained in:
Robin Gareus 2015-08-05 00:02:31 +02:00
parent 507006a9a6
commit 53e969e925
2 changed files with 8 additions and 4 deletions
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1
libs/ardour/ardour/lv2_plugin.h
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@ -240,7 +240,6 @@ class LIBARDOUR_API LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
LV2_Feature _def_state_feature;
// Options passed to plugin
int32_t _block_length;
int32_t _seq_size;
mutable unsigned _state_version;

11
libs/ardour/lv2_plugin.cc
View File

@ -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 }