Revert of Add optional visualization file writers to VideoProcessor tests.

webrtc/test/testsupport/frame_reader.cc

+/*
+ *  Copyright (c) 2011 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.
+ */
+
+#include "webrtc/test/testsupport/frame_reader.h"
+
+#include <assert.h>
+
+#include "webrtc/api/video/i420_buffer.h"
+#include "webrtc/test/frame_utils.h"
+#include "webrtc/test/testsupport/fileutils.h"
+
+namespace webrtc {
+namespace test {
+
+FrameReaderImpl::FrameReaderImpl(std::string input_filename,
+                                 int width, int height)
+    : input_filename_(input_filename),
+      width_(width), height_(height),
+      input_file_(NULL) {
+}
+
+FrameReaderImpl::~FrameReaderImpl() {
+  Close();
+}
+
+bool FrameReaderImpl::Init() {
+  if (width_ <= 0 || height_ <= 0) {
+    fprintf(stderr, "Frame width and height must be >0, was %d x %d\n",
+            width_, height_);
+    return false;
+  }
+  frame_length_in_bytes_ =
+      width_ * height_ + 2 * ((width_ + 1) / 2) * ((height_ + 1) / 2);
+
+  input_file_ = fopen(input_filename_.c_str(), "rb");
+  if (input_file_ == NULL) {
+    fprintf(stderr, "Couldn't open input file for reading: %s\n",
+            input_filename_.c_str());
+    return false;
+  }
+  // Calculate total number of frames.
+  size_t source_file_size = GetFileSize(input_filename_);
+  if (source_file_size <= 0u) {
+    fprintf(stderr, "Found empty file: %s\n", input_filename_.c_str());
+    return false;
+  }
+  number_of_frames_ = static_cast<int>(source_file_size /
+                                       frame_length_in_bytes_);
+  return true;
+}
+
+void FrameReaderImpl::Close() {
+  if (input_file_ != NULL) {
+    fclose(input_file_);
+    input_file_ = NULL;
+  }
+}
+
+rtc::scoped_refptr<I420Buffer> FrameReaderImpl::ReadFrame() {
+  if (input_file_ == NULL) {
+    fprintf(stderr, "FrameReader is not initialized (input file is NULL)\n");
+    return nullptr;
+  }
+  rtc::scoped_refptr<I420Buffer> buffer(
+      ReadI420Buffer(width_, height_, input_file_));
+  if (!buffer && ferror(input_file_)) {
+    fprintf(stderr, "Error reading from input file: %s\n",
+            input_filename_.c_str());
+  }
+  return buffer;
+}
+
+size_t FrameReaderImpl::FrameLength() { return frame_length_in_bytes_; }
+int FrameReaderImpl::NumberOfFrames() { return number_of_frames_; }
+
+}  // namespace test
+}  // namespace webrtc