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-rw-r--r--src/lv2_evbuf.c201
1 files changed, 143 insertions, 58 deletions
diff --git a/src/lv2_evbuf.c b/src/lv2_evbuf.c
index 8426297..8fab7f5 100644
--- a/src/lv2_evbuf.c
+++ b/src/lv2_evbuf.c
@@ -18,7 +18,6 @@
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
-#include <assert.h>
#include "lv2/lv2plug.in/ns/ext/atom/atom-buffer.h"
#include "lv2/lv2plug.in/ns/ext/event/event.h"
@@ -28,7 +27,7 @@
struct LV2_Evbuf_Impl {
union {
LV2_Event_Buffer event;
- LV2_Atom_Buffer atom_event;
+ LV2_Atom_Buffer atom;
} buf;
LV2_Evbuf_Type type;
};
@@ -40,11 +39,17 @@ lv2_evbuf_pad_size(uint32_t size)
}
LV2_Evbuf*
-lv2_evbuf_new(uint32_t capacity)
+lv2_evbuf_new(uint32_t capacity, LV2_Evbuf_Type type)
{
LV2_Evbuf* evbuf = (LV2_Evbuf*)malloc(sizeof(LV2_Evbuf));
- evbuf->type = LV2_EVBUF_EVENT_BUFFER;
- evbuf->buf.event.capacity = capacity;
+ evbuf->type = type;
+ switch (type) {
+ case LV2_EVBUF_EVENT:
+ evbuf->buf.event.capacity = capacity;
+ break;
+ case LV2_EVBUF_ATOM:
+ evbuf->buf.atom.capacity = capacity;
+ }
lv2_evbuf_reset(evbuf);
return evbuf;
}
@@ -58,73 +63,127 @@ lv2_evbuf_free(LV2_Evbuf* evbuf)
void
lv2_evbuf_reset(LV2_Evbuf* evbuf)
{
- LV2_Event_Buffer* buf = &evbuf->buf.event;
- buf->header_size = sizeof(LV2_Event_Buffer);
- buf->stamp_type = LV2_EVENT_AUDIO_STAMP;
- buf->event_count = 0;
- buf->size = 0;
+ switch (evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ evbuf->buf.event.header_size = sizeof(LV2_Event_Buffer);
+ evbuf->buf.event.stamp_type = LV2_EVENT_AUDIO_STAMP;
+ evbuf->buf.event.event_count = 0;
+ evbuf->buf.event.size = 0;
+ break;
+ case LV2_EVBUF_ATOM:
+ evbuf->buf.atom.event_count = 0;
+ evbuf->buf.atom.size = 0;
+ }
+}
+
+uint32_t
+lv2_evbuf_get_size(LV2_Evbuf* evbuf)
+{
+ switch (evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ return evbuf->buf.event.size;
+ case LV2_EVBUF_ATOM:
+ return evbuf->buf.atom.size;
+ }
+ return 0;
}
uint32_t
lv2_evbuf_get_event_count(LV2_Evbuf* evbuf)
{
- return evbuf->buf.event.event_count;
+ switch (evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ return evbuf->buf.event.event_count;
+ case LV2_EVBUF_ATOM:
+ return evbuf->buf.atom.event_count;
+ }
+ return 0;
}
void*
lv2_evbuf_get_buffer(LV2_Evbuf* evbuf)
{
- return &evbuf->buf.event;
+ switch (evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ return &evbuf->buf.event;
+ case LV2_EVBUF_ATOM:
+ return &evbuf->buf.atom;
+ }
+ return NULL;
}
-bool
-lv2_evbuf_begin(LV2_Evbuf_Iterator* iter,
- LV2_Evbuf* evbuf)
+LV2_Evbuf_Iterator
+lv2_evbuf_begin(LV2_Evbuf* evbuf)
{
- LV2_Event_Buffer* buf = &evbuf->buf.event;
- iter->offset = 0;
- return buf->size > 0;
+ LV2_Evbuf_Iterator iter = { evbuf, 0 };
+ return iter;
}
bool
-lv2_evbuf_is_valid(LV2_Evbuf_Iterator* iter)
+lv2_evbuf_is_valid(LV2_Evbuf_Iterator iter)
{
- return iter->offset < iter->evbuf->buf.event.size;
+ return iter.offset < lv2_evbuf_get_size(iter.evbuf);
}
-bool
-lv2_evbuf_increment(LV2_Evbuf_Iterator* iter)
+LV2_Evbuf_Iterator
+lv2_evbuf_next(LV2_Evbuf_Iterator iter)
{
- assert(lv2_evbuf_is_valid(iter));
-
- LV2_Event* const ev = (LV2_Event*)(
- (uint8_t*)iter->evbuf->buf.event.data + iter->offset);
+ if (!lv2_evbuf_is_valid(iter)) {
+ return iter;
+ }
- iter->offset += lv2_evbuf_pad_size(sizeof(LV2_Event) + ev->size);
+ LV2_Evbuf* evbuf = iter.evbuf;
+ uint32_t size;
+ uint32_t offset = iter.offset;
+ switch (evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ size = ((LV2_Event*)(evbuf->buf.event.data + offset))->size;
+ break;
+ case LV2_EVBUF_ATOM:
+ size = ((LV2_Atom_Event*)(evbuf->buf.atom.data + offset))->body.size;
+ break;
+ }
- return true;
+ offset += lv2_evbuf_pad_size(sizeof(LV2_Atom_Event) + size);
+ LV2_Evbuf_Iterator next = { evbuf, offset };
+ return next;
}
bool
-lv2_evbuf_get(LV2_Evbuf_Iterator* iter,
- uint32_t* frames,
- uint32_t* subframes,
- uint32_t* type,
- uint32_t* size,
- uint8_t** data)
+lv2_evbuf_get(LV2_Evbuf_Iterator iter,
+ uint32_t* frames,
+ uint32_t* subframes,
+ uint32_t* type,
+ uint32_t* size,
+ uint8_t** data)
{
*frames = *subframes = *type = *size = 0;
*data = NULL;
- assert(lv2_evbuf_is_valid(iter));
- LV2_Event* const ev = (LV2_Event*)(
- (uint8_t*)iter->evbuf->buf.event.data + iter->offset);
+ if (!lv2_evbuf_is_valid(iter)) {
+ return false;
+ }
- *frames = ev->frames;
- *subframes = ev->subframes;
- *type = ev->type;
- *size = ev->size;
- *data = (uint8_t*)ev + sizeof(LV2_Event);
+ LV2_Event* ev;
+ LV2_Atom_Event* aev;
+ switch (iter.evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ ev = (LV2_Event*)(iter.evbuf->buf.event.data + iter.offset);
+ *frames = ev->frames;
+ *subframes = ev->subframes;
+ *type = ev->type;
+ *size = ev->size;
+ *data = (uint8_t*)ev + sizeof(LV2_Event);
+ break;
+ case LV2_EVBUF_ATOM:
+ aev = (LV2_Atom_Event*)(iter.evbuf->buf.atom.data + iter.offset);
+ *frames = aev->frames;
+ *subframes = aev->subframes;
+ *type = aev->body.type;
+ *size = aev->body.size;
+ *data = aev->body.body;
+ break;
+ }
return true;
}
@@ -137,23 +196,49 @@ lv2_evbuf_write(LV2_Evbuf_Iterator* iter,
uint32_t size,
const uint8_t* data)
{
- LV2_Event_Buffer* buf = &iter->evbuf->buf.event;
- if (buf->capacity - buf->size < sizeof(LV2_Event) + size) {
- return false;
+ LV2_Event_Buffer* ebuf;
+ LV2_Event* ev;
+ LV2_Atom_Buffer* abuf;
+ LV2_Atom_Event* aev;
+ switch (iter->evbuf->type) {
+ case LV2_EVBUF_EVENT:
+ ebuf = &iter->evbuf->buf.event;
+ if (ebuf->capacity - ebuf->size < sizeof(LV2_Event) + size) {
+ return false;
+ }
+
+ ev = (LV2_Event*)(ebuf->data + iter->offset);
+ ev->frames = frames;
+ ev->subframes = subframes;
+ ev->type = type;
+ ev->size = size;
+ memcpy((uint8_t*)ev + sizeof(LV2_Event), data, size);
+
+ size = lv2_evbuf_pad_size(sizeof(LV2_Event) + size);
+ ebuf->size += size;
+ ebuf->event_count += 1;
+ iter->offset += size;
+ break;
+ case LV2_EVBUF_ATOM:
+ abuf = &iter->evbuf->buf.atom;
+ if (abuf->capacity - abuf->size < sizeof(LV2_Atom_Event) + size) {
+ return false;
+ }
+
+ aev = (LV2_Atom_Event*)(abuf->data + iter->offset);
+ aev->frames = frames;
+ aev->subframes = subframes;
+ aev->body.type = type;
+ aev->body.size = size;
+ memcpy(aev->body.body, data, size);
+ ++abuf->event_count;
+
+ size = lv2_atom_pad_size(sizeof(LV2_Atom_Event) + size);
+ abuf->size += size;
+ abuf->event_count += 1;
+ iter->offset += size;
+ break;
}
- LV2_Event* const ev = (LV2_Event*)((uint8_t*)buf->data + iter->offset);
-
- ev->frames = frames;
- ev->subframes = subframes;
- ev->type = type;
- ev->size = size;
- memcpy((uint8_t*)ev + sizeof(LV2_Event), data, size);
- ++buf->event_count;
-
- size = lv2_evbuf_pad_size(sizeof(LV2_Event) + size);
- buf->size += size;
- iter->offset += size;
-
return true;
}