From 8cbdb596ebf79587a432ed40583630b6cd39ed88 Mon Sep 17 00:00:00 2001
From: Steam Deck User <deck@arch.steamdeck>
Date: Thu, 16 Mar 2023 13:36:19 +0100
Subject: vaapi wip

---
 include/egl.h   |  3 +++
 include/vaapi.h | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 include/vaapi.h

(limited to 'include')

diff --git a/include/egl.h b/include/egl.h
index 6e8f763..f4c47ff 100644
--- a/include/egl.h
+++ b/include/egl.h
@@ -33,12 +33,14 @@ typedef void* EGLImageKHR;
 typedef void *GLeglImageOES;
 typedef void (*__eglMustCastToProperFunctionPointerType)(void);
 
+#define EGL_SUCCESS                             0x3000
 #define EGL_BUFFER_SIZE                         0x3020
 #define EGL_RENDERABLE_TYPE                     0x3040
 #define EGL_OPENGL_ES2_BIT                      0x0004
 #define EGL_NONE                                0x3038
 #define EGL_CONTEXT_CLIENT_VERSION              0x3098
 #define EGL_BACK_BUFFER                         0x3084
+#define EGL_GL_TEXTURE_2D                       0x30B1
 
 #define GL_TEXTURE_2D                           0x0DE1
 #define GL_RGB                                  0x1907
@@ -97,6 +99,7 @@ typedef struct {
     EGLContext egl_context;
     Window window;
 
+    int32_t (*eglGetError)(void);
     EGLDisplay (*eglGetDisplay)(EGLNativeDisplayType display_id);
     unsigned int (*eglInitialize)(EGLDisplay dpy, int32_t *major, int32_t *minor);
     unsigned int (*eglTerminate)(EGLDisplay dpy);
diff --git a/include/vaapi.h b/include/vaapi.h
new file mode 100644
index 0000000..7ec73b2
--- /dev/null
+++ b/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 */
-- 
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