Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

rtc_tools/frame_editing/frame_editing_lib.cc

@@ -0,0 +1,87 @@
+/*
+ *  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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <memory>
+#include <string>
+
+#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
+#include "webrtc/rtc_tools/frame_editing/frame_editing_lib.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+int EditFrames(const std::string& in_path, int width, int height,
+               int first_frame_to_process, int interval,
+               int last_frame_to_process, const std::string& out_path) {
+  if (last_frame_to_process < first_frame_to_process) {
+    fprintf(stderr, "The set of frames to cut is empty! (l < f)\n");
+    return -10;
+  }
+
+  FILE* in_fid = fopen(in_path.c_str() , "rb");
+  if (!in_fid) {
+    fprintf(stderr, "Could not read input file: %s.\n", in_path.c_str());
+    return -11;
+  }
+
+  // Frame size of I420.
+  size_t frame_length = CalcBufferSize(VideoType::kI420, width, height);
+
+  std::unique_ptr<uint8_t[]> temp_buffer(new uint8_t[frame_length]);
+
+  FILE* out_fid = fopen(out_path.c_str(), "wb");
+
+  if (!out_fid) {
+    fprintf(stderr, "Could not open output file: %s.\n", out_path.c_str());
+    fclose(in_fid);
+    return -12;
+  }
+
+  int num_frames_read = 0;
+  int num_frames_read_between = 0;
+  size_t num_bytes_read;
+
+  while ((num_bytes_read = fread(temp_buffer.get(), 1, frame_length, in_fid))
+      == frame_length) {
+    num_frames_read++;
+    if ((num_frames_read < first_frame_to_process) ||
+        (last_frame_to_process < num_frames_read)) {
+      fwrite(temp_buffer.get(), 1, frame_length, out_fid);
+    } else {
+      num_frames_read_between++;
+      if (interval <= 0) {
+        if (interval == -1) {
+          // Remove all frames.
+        } else {
+          if (((num_frames_read_between - 1) % interval) == 0) {
+            // Keep only every |interval| frame.
+            fwrite(temp_buffer.get(), 1, frame_length, out_fid);
+          }
+        }
+      } else if (interval > 0) {
+        for (int i = 1; i <= interval; ++i) {
+          fwrite(temp_buffer.get(), 1, frame_length, out_fid);
+        }
+      }
+    }
+  }
+  if (num_bytes_read > 0 && num_bytes_read < frame_length) {
+    printf("Frame to small! Last frame truncated.\n");
+  }
+  fclose(in_fid);
+  fclose(out_fid);
+
+  printf("Done editing!\n");
+  return 0;
+}
+}  // namespace webrtc