Reland of Delete video_render module.

webrtc/modules/video_render/ios/open_gles20.mm

Index: webrtc/modules/video_render/ios/open_gles20.mm
diff --git a/webrtc/modules/video_render/ios/open_gles20.mm b/webrtc/modules/video_render/ios/open_gles20.mm
deleted file mode 100644
index d1735280f26e2a1ab4a8aa7641c3debdef127654..0000000000000000000000000000000000000000
--- a/webrtc/modules/video_render/ios/open_gles20.mm
+++ /dev/null
@@ -1,330 +0,0 @@
-/*
- *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-#error "This file requires ARC support."
-#endif
-
-// This files is mostly copied from
-// webrtc/modules/video_render/android/video_render_opengles20.h
-
-// TODO(sjlee): unify this copy with the android one.
-#include "webrtc/modules/video_render/ios/open_gles20.h"
-#include "webrtc/system_wrappers/include/trace.h"
-
-using namespace webrtc;
-
-const char OpenGles20::indices_[] = {0, 3, 2, 0, 2, 1};
-
-const char OpenGles20::vertext_shader_[] = {
-    "attribute vec4 aPosition;\n"
-    "attribute vec2 aTextureCoord;\n"
-    "varying vec2 vTextureCoord;\n"
-    "void main() {\n"
-    "  gl_Position = aPosition;\n"
-    "  vTextureCoord = aTextureCoord;\n"
-    "}\n"};
-
-// The fragment shader.
-// Do YUV to RGB565 conversion.
-const char OpenGles20::fragment_shader_[] = {
-    "precision mediump float;\n"
-    "uniform sampler2D Ytex;\n"
-    "uniform sampler2D Utex,Vtex;\n"
-    "varying vec2 vTextureCoord;\n"
-    "void main(void) {\n"
-    "  float nx,ny,r,g,b,y,u,v;\n"
-    "  mediump vec4 txl,ux,vx;"
-    "  nx=vTextureCoord[0];\n"
-    "  ny=vTextureCoord[1];\n"
-    "  y=texture2D(Ytex,vec2(nx,ny)).r;\n"
-    "  u=texture2D(Utex,vec2(nx,ny)).r;\n"
-    "  v=texture2D(Vtex,vec2(nx,ny)).r;\n"
-    "  y=1.1643*(y-0.0625);\n"
-    "  u=u-0.5;\n"
-    "  v=v-0.5;\n"
-    "  r=y+1.5958*v;\n"
-    "  g=y-0.39173*u-0.81290*v;\n"
-    "  b=y+2.017*u;\n"
-    "  gl_FragColor=vec4(r,g,b,1.0);\n"
-    "}\n"};
-
-OpenGles20::OpenGles20() : texture_width_(-1), texture_height_(-1) {
-  texture_ids_[0] = 0;
-  texture_ids_[1] = 0;
-  texture_ids_[2] = 0;
-
-  program_ = 0;
-
-  const GLfloat vertices[20] = {
-      // X, Y, Z, U, V
-      -1, -1, 0, 0, 1,   // Bottom Left
-      1,  -1, 0, 1, 1,   // Bottom Right
-      1,  1,  0, 1, 0,   // Top Right
-      -1, 1,  0, 0, 0};  // Top Left
-
-  memcpy(vertices_, vertices, sizeof(vertices_));
-}
-
-OpenGles20::~OpenGles20() {
-  if (program_) {
-    glDeleteTextures(3, texture_ids_);
-    glDeleteProgram(program_);
-  }
-}
-
-bool OpenGles20::Setup(int32_t width, int32_t height) {
-  program_ = CreateProgram(vertext_shader_, fragment_shader_);
-  if (!program_) {
-    return false;
-  }
-
-  int position_handle = glGetAttribLocation(program_, "aPosition");
-  int texture_handle = glGetAttribLocation(program_, "aTextureCoord");
-
-  // set the vertices array in the shader
-  // vertices_ contains 4 vertices with 5 coordinates.
-  // 3 for (xyz) for the vertices and 2 for the texture
-  glVertexAttribPointer(
-      position_handle, 3, GL_FLOAT, false, 5 * sizeof(GLfloat), vertices_);
-
-  glEnableVertexAttribArray(position_handle);
-
-  // set the texture coordinate array in the shader
-  // vertices_ contains 4 vertices with 5 coordinates.
-  // 3 for (xyz) for the vertices and 2 for the texture
-  glVertexAttribPointer(
-      texture_handle, 2, GL_FLOAT, false, 5 * sizeof(GLfloat), &vertices_[3]);
-  glEnableVertexAttribArray(texture_handle);
-
-  glUseProgram(program_);
-  int i = glGetUniformLocation(program_, "Ytex");
-  glUniform1i(i, 0); /* Bind Ytex to texture unit 0 */
-
-  i = glGetUniformLocation(program_, "Utex");
-  glUniform1i(i, 1); /* Bind Utex to texture unit 1 */
-
-  i = glGetUniformLocation(program_, "Vtex");
-  glUniform1i(i, 2); /* Bind Vtex to texture unit 2 */
-
-  glViewport(0, 0, width, height);
-  return true;
-}
-
-bool OpenGles20::SetCoordinates(const float z_order,
-                                const float left,
-                                const float top,
-                                const float right,
-                                const float bottom) {
-  if (top > 1 || top < 0 || right > 1 || right < 0 || bottom > 1 ||
-      bottom < 0 || left > 1 || left < 0) {
-    return false;
-  }
-
-  // Bottom Left
-  vertices_[0] = (left * 2) - 1;
-  vertices_[1] = -1 * (2 * bottom) + 1;
-  vertices_[2] = z_order;
-
-  // Bottom Right
-  vertices_[5] = (right * 2) - 1;
-  vertices_[6] = -1 * (2 * bottom) + 1;
-  vertices_[7] = z_order;
-
-  // Top Right
-  vertices_[10] = (right * 2) - 1;
-  vertices_[11] = -1 * (2 * top) + 1;
-  vertices_[12] = z_order;
-
-  // Top Left
-  vertices_[15] = (left * 2) - 1;
-  vertices_[16] = -1 * (2 * top) + 1;
-  vertices_[17] = z_order;
-
-  return true;
-}
-
-bool OpenGles20::Render(const VideoFrame& frame) {
-  if (texture_width_ != (GLsizei)frame.width() ||
-      texture_height_ != (GLsizei)frame.height()) {
-    SetupTextures(frame);
-  }
-  UpdateTextures(frame);
-
-  glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, indices_);
-
-  return true;
-}
-
-GLuint OpenGles20::LoadShader(GLenum shader_type, const char* shader_source) {
-  GLuint shader = glCreateShader(shader_type);
-  if (shader) {
-    glShaderSource(shader, 1, &shader_source, NULL);
-    glCompileShader(shader);
-
-    GLint compiled = 0;
-    glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
-    if (!compiled) {
-      GLint info_len = 0;
-      glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &info_len);
-      if (info_len) {
-        char* buf = (char*)malloc(info_len);
-        glGetShaderInfoLog(shader, info_len, NULL, buf);
-        WEBRTC_TRACE(kTraceError,
-                     kTraceVideoRenderer,
-                     0,
-                     "%s: Could not compile shader %d: %s",
-                     __FUNCTION__,
-                     shader_type,
-                     buf);
-        free(buf);
-      }
-      glDeleteShader(shader);
-      shader = 0;
-    }
-  }
-  return shader;
-}
-
-GLuint OpenGles20::CreateProgram(const char* vertex_source,
-                                 const char* fragment_source) {
-  GLuint vertex_shader = LoadShader(GL_VERTEX_SHADER, vertex_source);
-  if (!vertex_shader) {
-    return -1;
-  }
-
-  GLuint fragment_shader = LoadShader(GL_FRAGMENT_SHADER, fragment_source);
-  if (!fragment_shader) {
-    return -1;
-  }
-
-  GLuint program = glCreateProgram();
-  if (program) {
-    glAttachShader(program, vertex_shader);
-    glAttachShader(program, fragment_shader);
-    glLinkProgram(program);
-    GLint link_status = GL_FALSE;
-    glGetProgramiv(program, GL_LINK_STATUS, &link_status);
-    if (link_status != GL_TRUE) {
-      GLint info_len = 0;
-      glGetProgramiv(program, GL_INFO_LOG_LENGTH, &info_len);
-      if (info_len) {
-        char* buf = (char*)malloc(info_len);
-        glGetProgramInfoLog(program, info_len, NULL, buf);
-        WEBRTC_TRACE(kTraceError,
-                     kTraceVideoRenderer,
-                     0,
-                     "%s: Could not link program: %s",
-                     __FUNCTION__,
-                     buf);
-        free(buf);
-      }
-      glDeleteProgram(program);
-      program = 0;
-    }
-  }
-
-  if (vertex_shader) {
-    glDeleteShader(vertex_shader);
-  }
-
-  if (fragment_shader) {
-    glDeleteShader(fragment_shader);
-  }
-
-  return program;
-}
-
-static void InitializeTexture(int name, int id, int width, int height) {
-  glActiveTexture(name);
-  glBindTexture(GL_TEXTURE_2D, id);
-  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-  glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-  glTexImage2D(GL_TEXTURE_2D,
-               0,
-               GL_LUMINANCE,
-               width,
-               height,
-               0,
-               GL_LUMINANCE,
-               GL_UNSIGNED_BYTE,
-               NULL);
-}
-
-void OpenGles20::SetupTextures(const VideoFrame& frame) {
-  const GLsizei width = frame.width();
-  const GLsizei height = frame.height();
-
-  if (!texture_ids_[0]) {
-    glGenTextures(3, texture_ids_);  // Generate  the Y, U and V texture
-  }
-
-  InitializeTexture(GL_TEXTURE0, texture_ids_[0], width, height);
-  InitializeTexture(GL_TEXTURE1, texture_ids_[1], width / 2, height / 2);
-  InitializeTexture(GL_TEXTURE2, texture_ids_[2], width / 2, height / 2);
-
-  texture_width_ = width;
-  texture_height_ = height;
-}
-
-// Uploads a plane of pixel data, accounting for stride != width*bpp.
-static void GlTexSubImage2D(GLsizei width,
-                            GLsizei height,
-                            int stride,
-                            const uint8_t* plane) {
-  if (stride == width) {
-    // Yay!  We can upload the entire plane in a single GL call.
-    glTexSubImage2D(GL_TEXTURE_2D,
-                    0,
-                    0,
-                    0,
-                    width,
-                    height,
-                    GL_LUMINANCE,
-                    GL_UNSIGNED_BYTE,
-                    static_cast<const GLvoid*>(plane));
-  } else {
-    // Boo!  Since GLES2 doesn't have GL_UNPACK_ROW_LENGTH and iOS doesn't
-    // have GL_EXT_unpack_subimage we have to upload a row at a time.  Ick.
-    for (int row = 0; row < height; ++row) {
-      glTexSubImage2D(GL_TEXTURE_2D,
-                      0,
-                      0,
-                      row,
-                      width,
-                      1,
-                      GL_LUMINANCE,
-                      GL_UNSIGNED_BYTE,
-                      static_cast<const GLvoid*>(plane + (row * stride)));
-    }
-  }
-}
-
-void OpenGles20::UpdateTextures(const VideoFrame& frame) {
-  const GLsizei width = frame.width();
-  const GLsizei height = frame.height();
-
-  glActiveTexture(GL_TEXTURE0);
-  glBindTexture(GL_TEXTURE_2D, texture_ids_[0]);
-  GlTexSubImage2D(width, height, frame.stride(kYPlane), frame.buffer(kYPlane));
-
-  glActiveTexture(GL_TEXTURE1);
-  glBindTexture(GL_TEXTURE_2D, texture_ids_[1]);
-  GlTexSubImage2D(
-      width / 2, height / 2, frame.stride(kUPlane), frame.buffer(kUPlane));
-
-  glActiveTexture(GL_TEXTURE2);
-  glBindTexture(GL_TEXTURE_2D, texture_ids_[2]);
-  GlTexSubImage2D(
-      width / 2, height / 2, frame.stride(kVPlane), frame.buffer(kVPlane));
-}