| 0,0 → 1,82 |
|---|
| /* |
| * 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. |
| */ |
| |
| /* |
| * Initial EGL backend, and subject to change |
| * |
| * Gstreamer gst-gltexture has a framework to support associating a buffer |
| * to a texture via EGL_KHR_image_base and GL_OES_EGL_image_external. |
| * |
| * EGL_KHR_image_base: |
| * EGLImageKHR eglCreateImageKHR( |
| * EGLDisplay dpy, |
| * EGLContext ctx, |
| * EGLenum target, |
| * EGLClientBuffer buffer, |
| * const EGLint *attrib_list) |
| * |
| * GL_OES_EGL_image_external: |
| * This extension provides a mechanism for creating EGLImage texture targets |
| * from EGLImages. This extension defines a new texture target TEXTURE_EXTERNAL_OES. |
| * This texture target can only be specified using an EGLImage. |
| * The first eglCreateImageKHR will create an EGLImage from an EGLClientBufferm, and with |
| * an EGLImage, gst-gltexture can use GL_OES_EGL_image_external extension to create textures. |
| * |
| * eglCreateImageKHR and GL_OES_EGL_image_external are all called directly from gst-gltexture, |
| * thus the simplest way to support gst-gltexture is defining a new API to pass EGLClientBuffer |
| * to gst-gltexture. |
| * |
| * EGLClientBuffer is gfx/video driver implementation specific (?). It means we need to pass up |
| * the low-level buffer ID (or handle) of the decoded surface to gst-gltexture, and gst-gltexture |
| * then pass down it to gfx driver. |
| * |
| * Bellow API vaGetEGLClientBufferFromSurface is for this purpose |
| */ |
| |
| #include "va.h" |
| #include "va_backend_egl.h" |
| #include "va_egl.h" |
| |
| #define CTX(dpy) (((VADisplayContextP)dpy)->pDriverContext) |
| #define CHECK_DISPLAY(dpy) if( !vaDisplayIsValid(dpy) ) { return VA_STATUS_ERROR_INVALID_DISPLAY; } |
| |
| VAStatus vaGetEGLClientBufferFromSurface ( |
| VADisplay dpy, |
| VASurfaceID surface, |
| EGLClientBuffer *buffer /* out*/ |
| ) |
| { |
| VADriverContextP ctx; |
| struct VADriverVTableEGL *va_egl; |
| CHECK_DISPLAY(dpy); |
| ctx = CTX(dpy); |
| |
| va_egl = (struct VADriverVTableEGL *)ctx->vtable_egl; |
| if (va_egl && va_egl->vaGetEGLClientBufferFromSurface) { |
| return va_egl->vaGetEGLClientBufferFromSurface(ctx, surface, buffer); |
| } else |
| return VA_STATUS_ERROR_UNIMPLEMENTED; |
| } |
| |
| |