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-rw-r--r--src/cachemanager.cc103
-rw-r--r--src/cachemanager.h6
2 files changed, 71 insertions, 38 deletions
diff --git a/src/cachemanager.cc b/src/cachemanager.cc
index 641d984..ca7fde1 100644
--- a/src/cachemanager.cc
+++ b/src/cachemanager.cc
@@ -28,15 +28,17 @@
#include <stdio.h>
-#define CHUNKSIZE 256
+#define FRAMESIZE 256
+#define CHUNKSIZE FRAMESIZE*8
-sample_t nodata[CHUNKSIZE];
+sample_t nodata[FRAMESIZE];
+
+static std::vector<size_t> localcachepos;
+static std::vector<sample_t*> localcache;
CacheManager::CacheManager()
{
- for(int i = 0; i < CHUNKSIZE; i++) {
- nodata[i] = 0;
- }
+
}
CacheManager::~CacheManager()
@@ -44,15 +46,26 @@ CacheManager::~CacheManager()
deinit();
}
-void CacheManager::init(int poolsize)
+void CacheManager::init(size_t poolsize)
{
+ for(size_t i = 0; i < FRAMESIZE; i++) {
+ nodata[i] = 0;
+ }
+
id2cache.resize(poolsize);
- for(int i = 0; i < poolsize; i++) {
+ for(size_t i = 0; i < poolsize; i++) {
availableids.push_back(i);
}
+ localcachepos.resize(poolsize);
+ for(size_t i = 0; i < poolsize; i++) {
+ localcachepos[i] = 0;
+ }
+
running = true;
run();
+
+ // TODO: Add semaphore
}
void CacheManager::deinit()
@@ -65,39 +78,41 @@ void CacheManager::deinit()
// Invariant: initial_samples_needed < preloaded audio data
sample_t *CacheManager::open(AudioFile *file, size_t initial_samples_needed, int channel, cacheid_t &id)
{
- m_ids.lock();
- if(availableids.empty()) {
- id = CACHE_DUMMYID;
- }
- else {
- id = availableids.front();
- availableids.pop_front();
+ {
+ MutexAutolock l(m_ids);
+ if(availableids.empty()) {
+ id = CACHE_DUMMYID;
+ } else {
+ id = availableids.front();
+ availableids.pop_front();
+ }
}
- m_ids.unlock();
if(id == CACHE_DUMMYID) {
return nodata;
}
- if(initial_samples_needed < file->size) {
- cache_t c;
- c.file = file;
- c.channel = channel;
- c.pos = initial_samples_needed;
-
- // Allocate buffers
- // Increase audio ref count
- {
+ cache_t c;
+ c.file = file;
+ c.channel = channel;
+ c.pos = initial_samples_needed;
+ c.front = file->data;
+ c.back = nodata;
+ // Allocate buffers
+ // Increase audio ref count
+
+ {
MutexAutolock l(m_ids);
id2cache[id] = c;
- }
-
+ }
+
+ if(initial_samples_needed < file->size) {
event_t e = createLoadNextEvent(id, c.pos, LOADNEXT);
pushEvent(e);
}
- return file->data;
+ return c.front;
}
void CacheManager::close(cacheid_t id)
@@ -128,29 +143,47 @@ const CacheManager::cache_t CacheManager::getNextCache(cacheid_t id)
sample_t *CacheManager::next(cacheid_t id, size_t &size)
{
- size = CHUNKSIZE;
+ size = FRAMESIZE;
if(id == CACHE_DUMMYID) {
return nodata;
}
+ size_t localpos = localcachepos[id];
+ sample_t* localbuf = localcache[id];
+ if(localpos < CHUNKSIZE) {
+ localcachepos[id] += FRAMESIZE;
+ return localbuf + FRAMESIZE;
+ }
+
+ localcachepos[id] = 0;
+
const cache_t c = getNextCache(id);
+
+ localcache[id] = c.front;
- // If more is left of file
if(c.pos < c.file->size) {
event_t e = createLoadNextEvent(id, c.pos + CHUNKSIZE, LOADNEXT);
pushEvent(e);
}
- sample_t *s = c.file->data + (c.pos - size);
- return s;
+// sample_t *s = c.file->data + (c.pos - size);
+ return c.front;
+// return s;
}
void CacheManager::loadNext(cacheid_t id)
{
- MutexAutolock l(m_caches);
+ m_caches.lock();
cache_t c = id2cache[id];
+ sample_t *tmp;
+ c.front = c.back;
+ c.back = tmp;
id2cache[id] = c;
+ m_caches.unlock();
+
+ // do work
+ tmp = tmp + CHUNKSIZE;
}
void CacheManager::thread_main()
@@ -165,14 +198,14 @@ void CacheManager::thread_main()
m_events.unlock();
// TODO: Skip event if e.pos < cache.pos
- if(!e.active) continue;
+// if(!e.active) continue;
switch(e.cmd) {
case LOADNEXT:
loadNext(e.id);
break;
- case CLEAN:
- break;
+// case CLEAN:
+// break;
}
}
else {
diff --git a/src/cachemanager.h b/src/cachemanager.h
index 264f644..6a60880 100644
--- a/src/cachemanager.h
+++ b/src/cachemanager.h
@@ -49,7 +49,7 @@ public:
CacheManager();
~CacheManager();
- void init(int poolsize);
+ void init(size_t poolsize);
void deinit();
void thread_main();
@@ -89,8 +89,8 @@ private:
AudioFile *file;
int channel;
size_t pos;
- void *a;
- void *b;
+ sample_t *front;
+ sample_t *back;
} cache_t;
enum cmd_t {