Copy vaapi structures to vaapi.h instead of depending on vaapi at compile time

include/vaapi.h

@@ -4,11 +4,21 @@
 #include <stdint.h>
 #include <stdbool.h>
 
+// To prevent hwcontext_vaapi.h from including va.h.. An ugly hack
+#define _VA_H_
+
+// These definitions are copied from va.h, which is licensed under MIT
+
 typedef void* VADisplay;
 typedef int VAStatus;
+
 typedef unsigned int VAGenericID;
+typedef VAGenericID VAConfigID;
+typedef VAGenericID VAContextID;
 typedef VAGenericID VASurfaceID;
 
+#define VA_STATUS_SUCCESS           0x00000000
+
 typedef struct {
     /** Pixel format fourcc of the whole surface (VA_FOURCC_*). */
     uint32_t fourcc;
@@ -46,6 +56,101 @@ typedef struct {
     } layers[4];
 } VADRMPRIMESurfaceDescriptor;
 
+#define VA_INVALID_ID       0xffffffff
+#define VA_INVALID_SURFACE  VA_INVALID_ID
+
+/** \brief Generic value types. */
+typedef enum  {
+    VAGenericValueTypeInteger = 1,      /**< 32-bit signed integer. */
+    VAGenericValueTypeFloat,            /**< 32-bit floating-point value. */
+    VAGenericValueTypePointer,          /**< Generic pointer type */
+    VAGenericValueTypeFunc              /**< Pointer to function */
+} VAGenericValueType;
+
+/** \brief Generic function type. */
+typedef void (*VAGenericFunc)(void);
+
+/** \brief Generic value. */
+typedef struct _VAGenericValue {
+    /** \brief Value type. See #VAGenericValueType. */
+    VAGenericValueType  type;
+    /** \brief Value holder. */
+    union {
+        /** \brief 32-bit signed integer. */
+        int32_t             i;
+        /** \brief 32-bit float. */
+        float           f;
+        /** \brief Generic pointer. */
+        void           *p;
+        /** \brief Pointer to function. */
+        VAGenericFunc   fn;
+    }                   value;
+} VAGenericValue;
+
+/** @name Surface attribute flags */
+/**@{*/
+/** \brief Surface attribute is not supported. */
+#define VA_SURFACE_ATTRIB_NOT_SUPPORTED 0x00000000
+/** \brief Surface attribute can be got through vaQuerySurfaceAttributes(). */
+#define VA_SURFACE_ATTRIB_GETTABLE      0x00000001
+/** \brief Surface attribute can be set through vaCreateSurfaces(). */
+#define VA_SURFACE_ATTRIB_SETTABLE      0x00000002
+/**@}*/
+
+/** \brief Surface attribute types. */
+typedef enum {
+    VASurfaceAttribNone = 0,
+    /**
+     * \brief Pixel format as a FOURCC (int, read/write).
+     *
+     * When vaQuerySurfaceAttributes() is called, the driver will return one
+     * PixelFormat attribute per supported pixel format.
+     *
+     * When provided as an input to vaCreateSurfaces(), the driver will
+     * allocate a surface with the provided pixel format.
+     */
+    VASurfaceAttribPixelFormat,
+    /** \brief Minimal width in pixels (int, read-only). */
+    VASurfaceAttribMinWidth,
+    /** \brief Maximal width in pixels (int, read-only). */
+    VASurfaceAttribMaxWidth,
+    /** \brief Minimal height in pixels (int, read-only). */
+    VASurfaceAttribMinHeight,
+    /** \brief Maximal height in pixels (int, read-only). */
+    VASurfaceAttribMaxHeight,
+    /** \brief Surface memory type expressed in bit fields (int, read/write). */
+    VASurfaceAttribMemoryType,
+    /** \brief External buffer descriptor (pointer, write).
+     *
+     * Refer to the documentation for the memory type being created to
+     * determine what descriptor structure to pass here.  If not otherwise
+     * stated, the common VASurfaceAttribExternalBuffers should be used.
+     */
+    VASurfaceAttribExternalBufferDescriptor,
+    /** \brief Surface usage hint, gives the driver a hint of intended usage
+     *  to optimize allocation (e.g. tiling) (int, read/write). */
+    VASurfaceAttribUsageHint,
+    /** \brief List of possible DRM format modifiers (pointer, write).
+     *
+     * The value must be a pointer to a VADRMFormatModifierList. This can only
+     * be used when allocating a new buffer, it's invalid to use this attribute
+     * when importing an existing buffer.
+     */
+    VASurfaceAttribDRMFormatModifiers,
+    /** \brief Number of surface attributes. */
+    VASurfaceAttribCount
+} VASurfaceAttribType;
+
+/** \brief Surface attribute. */
+typedef struct _VASurfaceAttrib {
+    /** \brief Type. */
+    VASurfaceAttribType type;
+    /** \brief Flags. See "Surface attribute flags". */
+    uint32_t        flags;
+    /** \brief Value. See "Surface attribute types" for the expected types. */
+    VAGenericValue      value;
+} VASurfaceAttrib;
+
 #define VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2      0x40000000
 #define VA_EXPORT_SURFACE_READ_WRITE                0x0003
 #define VA_EXPORT_SURFACE_SEPARATE_LAYERS           0x0004