vaapi wip

include/vaapi.h

@@ -0,0 +1,63 @@
+#ifndef GSR_VAAPI_H
+#define GSR_VAAPI_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef void* VADisplay;
+typedef int VAStatus;
+typedef unsigned int VAGenericID;
+typedef VAGenericID VASurfaceID;
+
+typedef struct {
+    /** Pixel format fourcc of the whole surface (VA_FOURCC_*). */
+    uint32_t fourcc;
+    /** Width of the surface in pixels. */
+    uint32_t width;
+    /** Height of the surface in pixels. */
+    uint32_t height;
+    /** Number of distinct DRM objects making up the surface. */
+    uint32_t num_objects;
+    /** Description of each object. */
+    struct {
+        /** DRM PRIME file descriptor for this object. */
+        int fd;
+        /** Total size of this object (may include regions which are
+         *  not part of the surface). */
+        uint32_t size;
+        /** Format modifier applied to this object. */
+        uint64_t drm_format_modifier;
+    } objects[4];
+    /** Number of layers making up the surface. */
+    uint32_t num_layers;
+    /** Description of each layer in the surface. */
+    struct {
+        /** DRM format fourcc of this layer (DRM_FOURCC_*). */
+        uint32_t drm_format;
+        /** Number of planes in this layer. */
+        uint32_t num_planes;
+        /** Index in the objects array of the object containing each
+         *  plane. */
+        uint32_t object_index[4];
+        /** Offset within the object of each plane. */
+        uint32_t offset[4];
+        /** Pitch of each plane. */
+        uint32_t pitch[4];
+    } layers[4];
+} VADRMPRIMESurfaceDescriptor;
+
+#define VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2      0x40000000
+#define VA_EXPORT_SURFACE_READ_WRITE                0x0003
+#define VA_EXPORT_SURFACE_SEPARATE_LAYERS           0x0004
+
+typedef struct {
+    void *library;
+    
+    VAStatus (*vaExportSurfaceHandle)(VADisplay dpy, VASurfaceID surface_id, uint32_t mem_type, uint32_t flags, void *descriptor);
+    VAStatus (*vaSyncSurface)(VADisplay dpy, VASurfaceID render_target);
+} gsr_vaapi;
+
+bool gsr_vaapi_load(gsr_vaapi *self);
+void gsr_vaapi_unload(gsr_vaapi *self);
+
+#endif /* GSR_VAAPI_H */