1 files changed, 160 insertions, 0 deletions
diff --git a/jni/feature_mos/src/mosaic_renderer/YVURenderer.cpp b/jni/feature_mos/src/mosaic_renderer/YVURenderer.cpp
new file mode 100755
index 000000000..f7dcf6f61
--- /dev/null
+++ b/jni/feature_mos/src/mosaic_renderer/YVURenderer.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "YVURenderer.h"
+
+#include <GLES2/gl2ext.h>
+
+const GLfloat g_vVertices[] = {
+    -1.f, 1.f, 0.0f, 1.0f,  // Position 0
+    0.0f,  1.0f,         // TexCoord 0
+     1.f, 1.f, 0.0f, 1.0f, // Position 1
+    1.0f,  1.0f,         // TexCoord 1
+    -1.f, -1.f, 0.0f, 1.0f, // Position 2
+    0.0f,  0.0f,         // TexCoord 2
+    1.f,  -1.f, 0.0f, 1.0f, // Position 3
+    1.0f,  0.0f          // TexCoord 3
+};
+
+const int VERTEX_STRIDE = 6 * sizeof(GLfloat);
+
+GLushort g_iIndices3[] = { 0, 1, 2, 3 };
+
+YVURenderer::YVURenderer() : Renderer()
+                   {
+}
+
+YVURenderer::~YVURenderer() {
+}
+
+bool YVURenderer::InitializeGLProgram()
+{
+    bool succeeded = false;
+    do {
+        GLuint glProgram;
+        glProgram = createProgram(VertexShaderSource(),
+                FragmentShaderSource());
+        if (!glProgram) {
+            break;
+        }
+
+        glUseProgram(glProgram);
+        if (!checkGlError("glUseProgram")) break;
+
+        // Get attribute locations
+        mPositionLoc     = glGetAttribLocation(glProgram, "a_Position");
+        mTexCoordLoc     = glGetAttribLocation(glProgram, "a_texCoord");
+
+        // Get sampler location
+        mSamplerLoc      = glGetUniformLocation(glProgram, "s_texture");
+
+        mGlProgram = glProgram;
+        succeeded = true;
+    } while (false);
+
+    if (!succeeded && (mGlProgram != 0))
+    {
+        glDeleteProgram(mGlProgram);
+        checkGlError("glDeleteProgram");
+        mGlProgram = 0;
+    }
+    return succeeded;
+}
+
+bool YVURenderer::DrawTexture()
+{
+    bool succeeded = false;
+    do {
+        bool rt = (mFrameBuffer == NULL)?
+                SetupGraphics(mSurfaceWidth, mSurfaceHeight) :
+                SetupGraphics(mFrameBuffer);
+
+        if(!rt)
+            break;
+
+        glDisable(GL_BLEND);
+
+        glActiveTexture(GL_TEXTURE0);
+        if (!checkGlError("glActiveTexture")) break;
+
+        const GLenum texture_type = InputTextureType();
+        glBindTexture(texture_type, mInputTextureName);
+        if (!checkGlError("glBindTexture")) break;
+
+        // Set the sampler texture unit to 0
+        glUniform1i(mSamplerLoc, 0);
+
+        // Load the vertex position
+        glVertexAttribPointer(mPositionLoc, 4, GL_FLOAT,
+                GL_FALSE, VERTEX_STRIDE, g_vVertices);
+
+        // Load the texture coordinate
+        glVertexAttribPointer(mTexCoordLoc, 2, GL_FLOAT,
+                GL_FALSE, VERTEX_STRIDE, &g_vVertices[4]);
+
+        glEnableVertexAttribArray(mPositionLoc);
+        glEnableVertexAttribArray(mTexCoordLoc);
+
+        // And, finally, execute the GL draw command.
+        glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_SHORT, g_iIndices3);
+
+        checkGlError("glDrawElements");
+
+        glBindFramebuffer(GL_FRAMEBUFFER, 0);
+        succeeded = true;
+    } while (false);
+    return succeeded;
+}
+
+const char* YVURenderer::VertexShaderSource() const
+{
+    // All this really does is copy the coordinates into
+    // variables for the fragment shader to pick up.
+    static const char gVertexShader[] =
+        "attribute vec4 a_Position;\n"
+        "attribute vec2 a_texCoord;\n"
+        "varying vec2 v_texCoord;\n"
+        "void main() {\n"
+        "  gl_Position = a_Position;\n"
+        "  v_texCoord = a_texCoord;\n"
+        "}\n";
+
+    return gVertexShader;
+}
+
+const char* YVURenderer::FragmentShaderSource() const
+{
+    static const char gFragmentShader[] =
+        "precision mediump float;\n"
+        "uniform sampler2D s_texture;\n"
+        "const vec4 coeff_y = vec4(0.257, 0.594, 0.098, 0.063);\n"
+        "const vec4 coeff_v = vec4(0.439, -0.368, -0.071, 0.500);\n"
+        "const vec4 coeff_u = vec4(-0.148, -0.291, 0.439, 0.500);\n"
+        "varying vec2 v_texCoord;\n"
+        "void main() {\n"
+        "  vec4 p;\n"
+        "  p = texture2D(s_texture, v_texCoord);\n"
+        "  gl_FragColor[0] = dot(p, coeff_y);\n"
+        "  p = texture2D(s_texture, v_texCoord);\n"
+        "  gl_FragColor[1] = dot(p, coeff_v);\n"
+        "  p = texture2D(s_texture, v_texCoord);\n"
+        "  gl_FragColor[2] = dot(p, coeff_u);\n"
+        "  p = texture2D(s_texture, v_texCoord);\n"
+        "  gl_FragColor[3] = dot(p, coeff_y);\n"
+        "}\n";
+
+    return gFragmentShader;
+}