1 files changed, 91 insertions, 0 deletions
diff --git a/third_party/libwebrtc/webrtc/test/frame_utils.cc b/third_party/libwebrtc/webrtc/test/frame_utils.cc
new file mode 100644
index 0000000000..1d5fe7c8f4
--- /dev/null
+++ b/third_party/libwebrtc/webrtc/test/frame_utils.cc
@@ -0,0 +1,91 @@
+/*
+ *  Copyright (c) 2013 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 <string.h>
+
+#include "api/video/i420_buffer.h"
+#include "api/video/video_frame.h"
+#include "test/frame_utils.h"
+
+namespace webrtc {
+namespace test {
+
+bool EqualPlane(const uint8_t* data1,
+                const uint8_t* data2,
+                int stride1,
+                int stride2,
+                int width,
+                int height) {
+  for (int y = 0; y < height; ++y) {
+    if (memcmp(data1, data2, width) != 0)
+      return false;
+    data1 += stride1;
+    data2 += stride2;
+  }
+  return true;
+}
+
+bool FramesEqual(const webrtc::VideoFrame& f1, const webrtc::VideoFrame& f2) {
+  if (f1.timestamp() != f2.timestamp() ||
+      f1.ntp_time_ms() != f2.ntp_time_ms() ||
+      f1.render_time_ms() != f2.render_time_ms()) {
+    return false;
+  }
+  return FrameBufsEqual(f1.video_frame_buffer(), f2.video_frame_buffer());
+}
+
+bool FrameBufsEqual(const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& f1,
+                    const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& f2) {
+  if (f1 == f2) {
+    return true;
+  }
+  // Exlude nullptr (except if both are nullptr, as above)
+  if (!f1 || !f2) {
+    return false;
+  }
+
+  if (f1->width() != f2->width() || f1->height() != f2->height() ||
+      f1->type() != f2->type()) {
+    return false;
+  }
+
+  rtc::scoped_refptr<webrtc::I420BufferInterface> f1_i420 = f1->ToI420();
+  rtc::scoped_refptr<webrtc::I420BufferInterface> f2_i420 = f2->ToI420();
+  return EqualPlane(f1_i420->DataY(), f2_i420->DataY(),
+                    f1_i420->StrideY(), f2_i420->StrideY(),
+                    f1_i420->width(), f1_i420->height()) &&
+         EqualPlane(f1_i420->DataU(), f2_i420->DataU(),
+                    f1_i420->StrideU(), f2_i420->StrideU(),
+                    f1_i420->ChromaWidth(), f1_i420->ChromaHeight()) &&
+         EqualPlane(f1_i420->DataV(), f2_i420->DataV(),
+                    f1_i420->StrideV(), f2_i420->StrideV(),
+                    f1_i420->ChromaWidth(), f1_i420->ChromaHeight());
+}
+
+rtc::scoped_refptr<I420Buffer> ReadI420Buffer(int width, int height, FILE *f) {
+  int half_width = (width + 1) / 2;
+  rtc::scoped_refptr<I420Buffer> buffer(
+      // Explicit stride, no padding between rows.
+      I420Buffer::Create(width, height, width, half_width, half_width));
+  size_t size_y = static_cast<size_t>(width) * height;
+  size_t size_uv = static_cast<size_t>(half_width) * ((height + 1) / 2);
+
+  if (fread(buffer->MutableDataY(), 1, size_y, f) < size_y)
+    return nullptr;
+  if (fread(buffer->MutableDataU(), 1, size_uv, f) < size_uv)
+    return nullptr;
+  if (fread(buffer->MutableDataV(), 1, size_uv, f) < size_uv)
+    return nullptr;
+  return buffer;
+}
+
+}  // namespace test
+}  // namespace webrtc