From 9042b4564de5477b18e680c7dce13b587a681dd9 Mon Sep 17 00:00:00 2001
From: Mathias Agopian <mathias@google.com>
Date: Mon, 26 Oct 2009 20:12:37 -0700
Subject:     fix [2143798] Need to figure out how to do video

    Use EGLImageKHR instead of copybit directly.
    We now have the basis to use streaming YUV textures (well, in fact
    we already are). When/if we use the GPU instead of the MDP we'll
    need to make sure it supports the appropriate YUV format.

    Also make sure we compile if EGL_ANDROID_image_native_buffer is not supported
---
 libs/surfaceflinger/LayerBase.cpp | 57 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'libs/surfaceflinger/LayerBase.cpp')

diff --git a/libs/surfaceflinger/LayerBase.cpp b/libs/surfaceflinger/LayerBase.cpp
index ecc78946bb93..8003d22daa8b 100644
--- a/libs/surfaceflinger/LayerBase.cpp
+++ b/libs/surfaceflinger/LayerBase.cpp
@@ -617,6 +617,63 @@ void LayerBase::loadTexture(Texture* texture,
     }
 }
 
+status_t LayerBase::initializeEglImage(
+        const sp<GraphicBuffer>& buffer, Texture* texture)
+{
+    status_t err = NO_ERROR;
+
+    // we need to recreate the texture
+    EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
+
+    // free the previous image
+    if (texture->image != EGL_NO_IMAGE_KHR) {
+        eglDestroyImageKHR(dpy, texture->image);
+        texture->image = EGL_NO_IMAGE_KHR;
+    }
+
+    // construct an EGL_NATIVE_BUFFER_ANDROID
+    android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
+
+    // create the new EGLImageKHR
+    const EGLint attrs[] = {
+            EGL_IMAGE_PRESERVED_KHR,    EGL_TRUE,
+            EGL_NONE,                   EGL_NONE
+    };
+    texture->image = eglCreateImageKHR(
+            dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+            (EGLClientBuffer)clientBuf, attrs);
+
+    LOGE_IF(texture->image == EGL_NO_IMAGE_KHR,
+            "eglCreateImageKHR() failed. err=0x%4x",
+            eglGetError());
+
+    if (texture->image != EGL_NO_IMAGE_KHR) {
+        glBindTexture(GL_TEXTURE_2D, texture->name);
+        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
+                (GLeglImageOES)texture->image);
+        GLint error = glGetError();
+        if (UNLIKELY(error != GL_NO_ERROR)) {
+            // this failed, for instance, because we don't support NPOT.
+            // FIXME: do something!
+            LOGE("layer=%p, glEGLImageTargetTexture2DOES(%p) "
+                 "failed err=0x%04x",
+                 this, texture->image, error);
+            mFlags &= ~DisplayHardware::DIRECT_TEXTURE;
+            err = INVALID_OPERATION;
+        } else {
+            // Everything went okay!
+            texture->NPOTAdjust = false;
+            texture->dirty  = false;
+            texture->width  = clientBuf->width;
+            texture->height = clientBuf->height;
+        }
+    } else {
+        err = INVALID_OPERATION;
+    }
+    return err;
+}
+
+
 // ---------------------------------------------------------------------------
 
 int32_t LayerBaseClient::sIdentity = 0;
-- 
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