Switch to linear filtering for video frames on Android.

content/common/gpu/media/avda_codec_image.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/media/avda_codec_image.h"
 
 #include <string.h>
 
 #include "base/metrics/histogram_macros.h"
 #include "content/common/gpu/media/avda_shared_state.h"
@@ skipping 166 matching lines @@
   texture_ = texture;
 }
 
 void AVDACodecImage::AttachSurfaceTextureToContext() {
   DCHECK(surface_texture_);
 
   // We assume that the currently bound texture is the intended one.
 
   // Attach the surface texture to the first context we're bound on, so that
   // no context switch is needed later.
-  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
   glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
   glTexParameteri(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
   // The surface texture is already detached, so just attach it.
   // We could do this earlier, but SurfaceTexture has context affinity, and we
   // don't want to require a context switch.
   surface_texture_->AttachToGLContext();
   shared_state_->DidAttachSurfaceTexture();
 }
 
@@ skipping 32 matching lines @@
   }
 
   memcpy(matrix, gl_matrix_, sizeof(gl_matrix_));
 }
 
 bool AVDACodecImage::IsCodecBufferOutstanding() const {
   return codec_buffer_index_ != kInvalidCodecBufferIndex && media_codec_;
 }
 
 }  // namespace content