Revert of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/Video/RTCI420TextureCache.mm

-/*
- *  Copyright 2017 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.
- */
-
-#import "RTCI420TextureCache.h"
-
-#import "RTCShader+Private.h"
-
-#include <vector>
-
-// Two sets of 3 textures are used here, one for each of the Y, U and V planes. Having two sets
-// alleviates CPU blockage in the event that the GPU is asked to render to a texture that is already
-// in use.
-static const GLsizei kNumTextureSets = 2;
-static const GLsizei kNumTexturesPerSet = 3;
-static const GLsizei kNumTextures = kNumTexturesPerSet * kNumTextureSets;
-
-@implementation RTCI420TextureCache {
-  BOOL _hasUnpackRowLength;
-  GLint _currentTextureSet;
-  // Handles for OpenGL constructs.
-  GLuint _textures[kNumTextures];
-  // Used to create a non-padded plane for GPU upload when we receive padded frames.
-  std::vector<uint8_t> _planeBuffer;
-}
-
-- (GLuint)yTexture {
-  return _textures[_currentTextureSet * kNumTexturesPerSet];
-}
-
-- (GLuint)uTexture {
-  return _textures[_currentTextureSet * kNumTexturesPerSet + 1];
-}
-
-- (GLuint)vTexture {
-  return _textures[_currentTextureSet * kNumTexturesPerSet + 2];
-}
-
-- (instancetype)initWithContext:(GlContextType *)context {
-  if (self = [super init]) {
-#if TARGET_OS_IPHONE
-    _hasUnpackRowLength = (context.API == kEAGLRenderingAPIOpenGLES3);
-#else
-    _hasUnpackRowLength = YES;
-#endif
-    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
-    [self setupTextures];
-  }
-  return self;
-}
-
-- (void)dealloc {
-  glDeleteTextures(kNumTextures, _textures);
-}
-
-- (void)setupTextures {
-  glGenTextures(kNumTextures, _textures);
-  // Set parameters for each of the textures we created.
-  for (GLsizei i = 0; i < kNumTextures; i++) {
-    glBindTexture(GL_TEXTURE_2D, _textures[i]);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-  }
-}
-
-- (void)uploadPlane:(const uint8_t *)plane
-            texture:(GLuint)texture
-              width:(size_t)width
-             height:(size_t)height
-             stride:(int32_t)stride {
-  glBindTexture(GL_TEXTURE_2D, texture);
-
-  const uint8_t *uploadPlane = plane;
-  if ((size_t)stride != width) {
-   if (_hasUnpackRowLength) {
-      // GLES3 allows us to specify stride.
-      glPixelStorei(GL_UNPACK_ROW_LENGTH, stride);
-      glTexImage2D(GL_TEXTURE_2D,
-                   0,
-                   RTC_PIXEL_FORMAT,
-                   static_cast<GLsizei>(width),
-                   static_cast<GLsizei>(height),
-                   0,
-                   RTC_PIXEL_FORMAT,
-                   GL_UNSIGNED_BYTE,
-                   uploadPlane);
-      glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
-      return;
-    } else {
-      // Make an unpadded copy and upload that instead. Quick profiling showed
-      // that this is faster than uploading row by row using glTexSubImage2D.
-      uint8_t *unpaddedPlane = _planeBuffer.data();
-      for (size_t y = 0; y < height; ++y) {
-        memcpy(unpaddedPlane + y * width, plane + y * stride, width);
-      }
-      uploadPlane = unpaddedPlane;
-    }
-  }
-  glTexImage2D(GL_TEXTURE_2D,
-               0,
-               RTC_PIXEL_FORMAT,
-               static_cast<GLsizei>(width),
-               static_cast<GLsizei>(height),
-               0,
-               RTC_PIXEL_FORMAT,
-               GL_UNSIGNED_BYTE,
-               uploadPlane);
-}
-
-- (void)uploadFrameToTextures:(RTCVideoFrame *)frame {
-  _currentTextureSet = (_currentTextureSet + 1) % kNumTextureSets;
-
-  const int chromaWidth = (frame.width + 1) / 2;
-  const int chromaHeight = (frame.height + 1) / 2;
-  if (frame.strideY != frame.width ||
-      frame.strideU != chromaWidth ||
-      frame.strideV != chromaWidth) {
-    _planeBuffer.resize(frame.width * frame.height);
-  }
-
-  [self uploadPlane:frame.dataY
-            texture:self.yTexture
-              width:frame.width
-             height:frame.height
-             stride:frame.strideY];
-
-  [self uploadPlane:frame.dataU
-            texture:self.uTexture
-              width:chromaWidth
-             height:chromaHeight
-             stride:frame.strideU];
-
-  [self uploadPlane:frame.dataV
-            texture:self.vTexture
-              width:chromaWidth
-             height:chromaHeight
-             stride:frame.strideV];
-}
-
-@end