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author | David Robillard <d@drobilla.net> | 2011-10-03 05:22:14 +0000 |
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committer | David Robillard <d@drobilla.net> | 2011-10-03 05:22:14 +0000 |
commit | e550736dbb862d8333a4d7f2ede9804a3d48326c (patch) | |
tree | 185b6f0483cbfe2fae87bb61b0e123fb2353b5d5 /src/branch.c | |
download | blop.lv2-e550736dbb862d8333a4d7f2ede9804a3d48326c.tar.gz blop.lv2-e550736dbb862d8333a4d7f2ede9804a3d48326c.tar.bz2 blop.lv2-e550736dbb862d8333a4d7f2ede9804a3d48326c.zip |
Add 'blip', an LV2 port of the LADSPA 'blop' collection.
git-svn-id: http://svn.drobilla.net/lad/trunk/plugins/blip.lv2@3525 a436a847-0d15-0410-975c-d299462d15a1
Diffstat (limited to 'src/branch.c')
-rw-r--r-- | src/branch.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/branch.c b/src/branch.c new file mode 100644 index 0000000..70329a2 --- /dev/null +++ b/src/branch.c @@ -0,0 +1,133 @@ +/* + An LV2 plugin to split a signal into two. + Copyright 2011 David Robillard + + Copyright 2002 Mike Rawes + + This 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 3 of the License, or + (at your option) any later version. + + This software 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 software. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdlib.h> +#include "lv2/lv2plug.in/ns/lv2core/lv2.h" + +#define BRANCH_INPUT 0 +#define BRANCH_OUTPUT1 1 +#define BRANCH_OUTPUT2 2 + +typedef struct { + float* input; + float* output1; + float* output2; +} Branch; + +static void +cleanup(LV2_Handle instance) +{ + free(instance); +} + +static void +connect_port(LV2_Handle instance, + uint32_t port, + void* data) +{ + Branch* plugin = (Branch*)instance; + + switch (port) { + case BRANCH_INPUT: + plugin->input = data; + break; + case BRANCH_OUTPUT1: + plugin->output1 = data; + break; + case BRANCH_OUTPUT2: + plugin->output2 = data; + break; + } +} + +static LV2_Handle +instantiate(const LV2_Descriptor* descriptor, + double sample_rate, + const char* bundle_path, + const LV2_Feature* const* features) +{ + Branch* plugin = (Branch*)malloc(sizeof(Branch)); + + return (LV2_Handle)plugin; +} + +static void +runBranch_ia_oaoa(LV2_Handle instance, + uint32_t sample_count) +{ + Branch* plugin = (Branch*)instance; + + /* Input (array of floats of length sample_count) */ + float* input = plugin->input; + + /* First Output (array of floats of length sample_count) */ + float* output1 = plugin->output1; + + /* Second Output (array of floats of length sample_count) */ + float* output2 = plugin->output2; + + float in; + + for (uint32_t s = 0; s < sample_count; ++s) { + in = input[s]; + + output1[s] = in; + output2[s] = in; + } +} + +static void +runBranch_ic_ococ(LV2_Handle instance, + uint32_t sample_count) +{ + Branch* plugin = (Branch*)instance; + + /* Input (float value) */ + float input = *(plugin->input); + + /* First Output (pointer to float value) */ + float* output1 = plugin->output1; + + /* Second Output (pointer to float value) */ + float* output2 = plugin->output2; + + output1[0] = input; + output2[0] = input; +} + +static const LV2_Descriptor descriptor = { + "http://drobilla.net/plugins/blip/branch", + instantiate, + connect_port, + NULL, + runBranch_ic_ococ, + NULL, + cleanup, + NULL, +}; + +LV2_SYMBOL_EXPORT const LV2_Descriptor* +lv2_descriptor(uint32_t index) +{ + switch (index) { + case 0: return &descriptor; + default: return NULL; + } +} |