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Create fifo_initialize/fifo_deinitialize

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This commit is contained in:
twinaphex 2020-08-24 12:17:33 +02:00
parent 9caf3080b1
commit 64f8a5990c
2 changed files with 53 additions and 17 deletions
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10
libretro-common/include/queues/fifo_queue.h
View File

@ -29,6 +29,7 @@
#include <retro_common_api.h>
#include <retro_inline.h>
#include <boolean.h>
RETRO_BEGIN_DECLS
@ -54,14 +55,7 @@ void fifo_write(fifo_buffer_t *buffer, const void *in_buf, size_t size);
void fifo_read(fifo_buffer_t *buffer, void *in_buf, size_t size);
static INLINE void fifo_free(fifo_buffer_t *buffer)
{
if (!buffer)
return;
free(buffer->buffer);
free(buffer);
}
void fifo_free(fifo_buffer_t *buffer);
#define FIFO_READ_AVAIL(buffer) (((buffer)->end + (((buffer)->end < (buffer)->first) ? (buffer)->size : 0)) - (buffer)->first)

60
libretro-common/queues/fifo_queue.c
View File

@ -23,29 +23,71 @@
#include <stdlib.h>
#include <string.h>
#include <retro_common_api.h>
#include <retro_inline.h>
#include <boolean.h>
#include <queues/fifo_queue.h>
static bool fifo_initialize_internal(fifo_buffer_t *buf, size_t size)
{
uint8_t *buffer = (uint8_t*)calloc(1, size + 1);
if (!buffer)
return false;
buf->buffer = buffer;
buf->size = size + 1;
buf->first = 0;
buf->end = 0;
return true;
}
bool fifo_initialize(fifo_buffer_t *buf, size_t size)
{
if (!buf)
return false;
return fifo_initialize_internal(buf, size);
}
void fifo_free(fifo_buffer_t *buffer)
{
if (!buffer)
return;
free(buffer->buffer);
free(buffer);
}
bool fifo_deinitialize(fifo_buffer_t *buffer)
{
if (!buffer)
return false;
if (buffer->buffer)
free(buffer->buffer);
buffer->buffer = NULL;
buffer->size = 0;
buffer->first = 0;
buffer->end = 0;
return true;
}
fifo_buffer_t *fifo_new(size_t size)
{
uint8_t *buffer = NULL;
fifo_buffer_t *buf = (fifo_buffer_t*)malloc(sizeof(*buf));
if (!buf)
return NULL;
buf->first = 0;
buf->end = 0;
buffer = (uint8_t*)calloc(1, size + 1);
if (!buffer)
if (!fifo_initialize_internal(buf, size))
{
free(buf);
return NULL;
}
buf->buffer = buffer;
buf->size = size + 1;
return buf;
}