bool RingBuffer_readbyte(RingBuffer *buffer, char* target){
if(RingBuffer_available_data(buffer) == 0)
return false;
*target = buffer->buffer[buffer->start];
RingBuffer_commit_read(buffer, 1);
if(buffer->end == buffer->start) {
buffer->start = buffer->end = 0;
}
return true;
}
bstring RingBuffer_gets(RingBuffer *buffer, int amount) {
check(amount > 0, "need more than 0 for gets, you gave: %d", amount);
check_debug(amount <= RingBuffer_available_data(buffer), "not enough in the buffer");
bstring result = blk2bstr(RingBuffer_starts_at(buffer), amount);
check(result != NULL, "failed to create result");
check(blength(result) == amount, "wrong result length");
RingBuffer_commit_read(buffer, amount);
assert(RingBuffer_available_data(buffer) >= 0 && "error in read_commit");
return result;
error:
return NULL;
}
int RingBuffer_read(RingBuffer *buffer, char *target, int amount) {
check_debug(amount <- RingBuffer_available_data(buffer),
"not enough in the buffer: has %d, needs %d",
RingBuffer_available_data(buffer), amount);
void *result = memcpy(target, RingBuffer_starts_at(buffer), amount);
check(result != NULL, "failed to write buffer into data");
RingBuffer_commit_read(buffer, amount);
if (buffer->end == buffer->start) {
buffer->start = buffer->end = 0;
}
return amount;
error:
return -1;
}
////--- Read buffer
int RingBuffer_read(RingBuffer *buffer, float *target, int amount){
if (amount > RingBuffer_available_data(buffer)) {
printf("Not enough in the buffer: has %d, needs %d", RingBuffer_available_data(buffer), amount);
return -1;
}
void *result = memcpy(target, RingBuffer_starts_at(buffer), amount*sizeof(float));
if (result==NULL) {
printf("Failed to write buffer into data.");
}
RingBuffer_commit_read(buffer, amount);
if(buffer->end == buffer->start) {
buffer->start = buffer->end = 0;
//printf("start=end=0 from read\n");
}
return amount;
}
int RingBuffer_read(RingBuffer *buffer, char *target, int amount)
{
if(amount > RingBuffer_available_data(buffer))
return -1;
unsigned int i;
int temp = buffer->start;
for(i = 0; i < amount; i++){
target[i] = buffer->buffer[temp];
temp++;
temp %= buffer->length;
}
RingBuffer_commit_read(buffer, amount);
if(buffer->end == buffer->start) {
buffer->start = buffer->end = 0;
}
return amount;
}
