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[common] Update framebuffer metadata + references

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This commit is contained in:
matthewjmc
2022-05-16 16:32:45 +07:00
committed by Geoffrey McRae
parent 78d2b76313
commit 53c843d9dd
5 changed files with 14 additions and 21 deletions
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17
common/include/common/framebuffer.h
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@@ -24,16 +24,21 @@
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdatomic.h>
typedef struct stFrameBuffer FrameBuffer;
#define FB_CHUNK_SIZE 1048576 // 1MB
#define FB_SPIN_LIMIT 10000 // 10ms
#define FB_WP_TYPE atomic_uint_least32_t
#define FB_WP_SIZE sizeof(FB_WP_TYPE)
typedef struct stFrameBuffer
{
FB_WP_TYPE wp;
uint8_t data[0];
} FrameBuffer;
typedef bool (*FrameBufferReadFn)(void * opaque, const void * src, size_t size);
/**
* The size of the FrameBuffer struct
*/
extern const size_t FrameBufferStructSize;
/**
* Wait for the framebuffer to fill to the specified size
*/

12
common/src/framebuffer.c
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@@ -27,22 +27,10 @@
#endif
#include <string.h>
#include <stdatomic.h>
#include <emmintrin.h>
#include <smmintrin.h>
#include <unistd.h>
#define FB_CHUNK_SIZE 1048576 // 1MB
#define FB_SPIN_LIMIT 10000 // 10ms
struct stFrameBuffer
{
atomic_uint_least32_t wp;
uint8_t data[0];
};
const size_t FrameBufferStructSize = sizeof(FrameBuffer);
bool framebuffer_wait(const FrameBuffer * frame, size_t size)
{
while(atomic_load_explicit(&frame->wp, memory_order_acquire) < size)