1 files changed, 99 insertions, 0 deletions
diff --git a/va/va_tpi.c b/va/va_tpi.c
new file mode 100644
index 0000000..fccd089
--- /dev/null
+++ b/va/va_tpi.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2007 Intel Corporation. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#define _GNU_SOURCE 1
+#include "va.h"
+#include "va_backend.h"
+#include "va_backend_tpi.h"
+#include "config.h"
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <dlfcn.h>
+#include <unistd.h>
+
+#define CTX(dpy) (((VADisplayContextP)dpy)->pDriverContext)
+#define CHECK_DISPLAY(dpy) if( !vaDisplayIsValid(dpy) ) { return VA_STATUS_ERROR_INVALID_DISPLAY; }
+
+/* Wrap a CI (camera imaging) frame as a VA surface to share captured video between camear
+ * and VA encode. With frame_id, VA driver need to call CI interfaces to get the information
+ * of the frame, and to determine if the frame can be wrapped as a VA surface
+ *
+ * Application should make sure the frame is idle before the frame is passed into VA stack
+ * and also a vaSyncSurface should be called before application tries to access the frame
+ * from CI stack
+ */
+VAStatus vaCreateSurfaceFromCIFrame (
+    VADisplay dpy,
+    unsigned long frame_id,
+    VASurfaceID *surface	/* out */
+)
+{
+  VADriverContextP ctx;
+  struct VADriverVTableTPI *tpi;
+  CHECK_DISPLAY(dpy);
+  ctx = CTX(dpy);
+  
+  tpi = ( struct VADriverVTableTPI *)ctx->vtable_tpi;
+  if (tpi && tpi->vaCreateSurfaceFromCIFrame) {
+      return tpi->vaCreateSurfaceFromCIFrame( ctx, frame_id, surface );
+  } else
+      return VA_STATUS_ERROR_UNIMPLEMENTED;
+  
+}
+
+/* Wrap a V4L2 buffer as a VA surface, so that V4L2 camera, VA encode
+ * can share the data without copy
+ * The VA driver should query the camera device from v4l2_fd to see
+ * if camera device memory/buffer can be wrapped into a VA surface
+ * Buffer information is passed in by v4l2_fmt and v4l2_buf structure,
+ * VA driver also needs do further check if the buffer can meet encode
+ * hardware requirement, such as dimension, fourcc, stride, etc
+ *
+ * Application should make sure the buffer is idle before the frame into VA stack
+ * and also a vaSyncSurface should be called before application tries to access the frame
+ * from V4L2 stack
+ */
+VAStatus vaCreateSurfaceFromV4L2Buf(
+    VADisplay dpy,
+    int v4l2_fd,         /* file descriptor of V4L2 device */
+    struct v4l2_format *v4l2_fmt,       /* format of V4L2 */
+    struct v4l2_buffer *v4l2_buf,       /* V4L2 buffer */
+    VASurfaceID *surface	       /* out */
+)
+{
+  VADriverContextP ctx;
+  struct VADriverVTableTPI *tpi;
+  CHECK_DISPLAY(dpy);
+  ctx = CTX(dpy);
+  
+  tpi = ( struct VADriverVTableTPI *)ctx->vtable_tpi;
+  if (tpi && tpi->vaCreateSurfaceFromV4L2Buf) {
+      return tpi->vaCreateSurfaceFromV4L2Buf( ctx, v4l2_fd, v4l2_fmt, v4l2_buf, surface );
+  } else
+      return VA_STATUS_ERROR_UNIMPLEMENTED;
+}