Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 232 insertions, 0 deletions

diff --git a/third_party/libwebrtc/api/video/i420_buffer.cc b/third_party/libwebrtc/api/video/i420_buffer.cc
new file mode 100644
index 0000000000..bf7fc06ee9
--- /dev/null
+++ b/third_party/libwebrtc/api/video/i420_buffer.cc
@@ -0,0 +1,232 @@
+/*
+ *  Copyright (c) 2015 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 "api/video/i420_buffer.h"
+
+#include <string.h>
+
+#include <algorithm>
+#include <utility>
+
+#include "api/make_ref_counted.h"
+#include "rtc_base/checks.h"
+#include "third_party/libyuv/include/libyuv/convert.h"
+#include "third_party/libyuv/include/libyuv/planar_functions.h"
+#include "third_party/libyuv/include/libyuv/scale.h"
+
+// Aligning pointer to 64 bytes for improved performance, e.g. use SIMD.
+static const int kBufferAlignment = 64;
+
+namespace webrtc {
+
+namespace {
+
+int I420DataSize(int height, int stride_y, int stride_u, int stride_v) {
+  return stride_y * height + (stride_u + stride_v) * ((height + 1) / 2);
+}
+
+}  // namespace
+
+I420Buffer::I420Buffer(int width, int height)
+    : I420Buffer(width, height, width, (width + 1) / 2, (width + 1) / 2) {}
+
+I420Buffer::I420Buffer(int width,
+                       int height,
+                       int stride_y,
+                       int stride_u,
+                       int stride_v)
+    : width_(width),
+      height_(height),
+      stride_y_(stride_y),
+      stride_u_(stride_u),
+      stride_v_(stride_v),
+      data_(static_cast<uint8_t*>(
+          AlignedMalloc(I420DataSize(height, stride_y, stride_u, stride_v),
+                        kBufferAlignment))) {
+  RTC_DCHECK_GT(width, 0);
+  RTC_DCHECK_GT(height, 0);
+  RTC_DCHECK_GE(stride_y, width);
+  RTC_DCHECK_GE(stride_u, (width + 1) / 2);
+  RTC_DCHECK_GE(stride_v, (width + 1) / 2);
+}
+
+I420Buffer::~I420Buffer() {}
+
+// static
+rtc::scoped_refptr<I420Buffer> I420Buffer::Create(int width, int height) {
+  return rtc::make_ref_counted<I420Buffer>(width, height);
+}
+
+// static
+rtc::scoped_refptr<I420Buffer> I420Buffer::Create(int width,
+                                                  int height,
+                                                  int stride_y,
+                                                  int stride_u,
+                                                  int stride_v) {
+  return rtc::make_ref_counted<I420Buffer>(width, height, stride_y, stride_u,
+                                           stride_v);
+}
+
+// static
+rtc::scoped_refptr<I420Buffer> I420Buffer::Copy(
+    const I420BufferInterface& source) {
+  return Copy(source.width(), source.height(), source.DataY(), source.StrideY(),
+              source.DataU(), source.StrideU(), source.DataV(),
+              source.StrideV());
+}
+
+// static
+rtc::scoped_refptr<I420Buffer> I420Buffer::Copy(int width,
+                                                int height,
+                                                const uint8_t* data_y,
+                                                int stride_y,
+                                                const uint8_t* data_u,
+                                                int stride_u,
+                                                const uint8_t* data_v,
+                                                int stride_v) {
+  // Note: May use different strides than the input data.
+  rtc::scoped_refptr<I420Buffer> buffer = Create(width, height);
+  RTC_CHECK_EQ(0, libyuv::I420Copy(data_y, stride_y, data_u, stride_u, data_v,
+                                   stride_v, buffer->MutableDataY(),
+                                   buffer->StrideY(), buffer->MutableDataU(),
+                                   buffer->StrideU(), buffer->MutableDataV(),
+                                   buffer->StrideV(), width, height));
+  return buffer;
+}
+
+// static
+rtc::scoped_refptr<I420Buffer> I420Buffer::Rotate(
+    const I420BufferInterface& src,
+    VideoRotation rotation) {
+  RTC_CHECK(src.DataY());
+  RTC_CHECK(src.DataU());
+  RTC_CHECK(src.DataV());
+
+  int rotated_width = src.width();
+  int rotated_height = src.height();
+  if (rotation == webrtc::kVideoRotation_90 ||
+      rotation == webrtc::kVideoRotation_270) {
+    std::swap(rotated_width, rotated_height);
+  }
+
+  rtc::scoped_refptr<webrtc::I420Buffer> buffer =
+      I420Buffer::Create(rotated_width, rotated_height);
+
+  RTC_CHECK_EQ(0,
+               libyuv::I420Rotate(
+                   src.DataY(), src.StrideY(), src.DataU(), src.StrideU(),
+                   src.DataV(), src.StrideV(), buffer->MutableDataY(),
+                   buffer->StrideY(), buffer->MutableDataU(), buffer->StrideU(),
+                   buffer->MutableDataV(), buffer->StrideV(), src.width(),
+                   src.height(), static_cast<libyuv::RotationMode>(rotation)));
+
+  return buffer;
+}
+
+void I420Buffer::InitializeData() {
+  memset(data_.get(), 0,
+         I420DataSize(height_, stride_y_, stride_u_, stride_v_));
+}
+
+int I420Buffer::width() const {
+  return width_;
+}
+
+int I420Buffer::height() const {
+  return height_;
+}
+
+const uint8_t* I420Buffer::DataY() const {
+  return data_.get();
+}
+const uint8_t* I420Buffer::DataU() const {
+  return data_.get() + stride_y_ * height_;
+}
+const uint8_t* I420Buffer::DataV() const {
+  return data_.get() + stride_y_ * height_ + stride_u_ * ((height_ + 1) / 2);
+}
+
+int I420Buffer::StrideY() const {
+  return stride_y_;
+}
+int I420Buffer::StrideU() const {
+  return stride_u_;
+}
+int I420Buffer::StrideV() const {
+  return stride_v_;
+}
+
+uint8_t* I420Buffer::MutableDataY() {
+  return const_cast<uint8_t*>(DataY());
+}
+uint8_t* I420Buffer::MutableDataU() {
+  return const_cast<uint8_t*>(DataU());
+}
+uint8_t* I420Buffer::MutableDataV() {
+  return const_cast<uint8_t*>(DataV());
+}
+
+// static
+void I420Buffer::SetBlack(I420Buffer* buffer) {
+  RTC_CHECK(libyuv::I420Rect(buffer->MutableDataY(), buffer->StrideY(),
+                             buffer->MutableDataU(), buffer->StrideU(),
+                             buffer->MutableDataV(), buffer->StrideV(), 0, 0,
+                             buffer->width(), buffer->height(), 0, 128,
+                             128) == 0);
+}
+
+void I420Buffer::CropAndScaleFrom(const I420BufferInterface& src,
+                                  int offset_x,
+                                  int offset_y,
+                                  int crop_width,
+                                  int crop_height) {
+  RTC_CHECK_LE(crop_width, src.width());
+  RTC_CHECK_LE(crop_height, src.height());
+  RTC_CHECK_LE(crop_width + offset_x, src.width());
+  RTC_CHECK_LE(crop_height + offset_y, src.height());
+  RTC_CHECK_GE(offset_x, 0);
+  RTC_CHECK_GE(offset_y, 0);
+
+  // Make sure offset is even so that u/v plane becomes aligned.
+  const int uv_offset_x = offset_x / 2;
+  const int uv_offset_y = offset_y / 2;
+  offset_x = uv_offset_x * 2;
+  offset_y = uv_offset_y * 2;
+
+  const uint8_t* y_plane = src.DataY() + src.StrideY() * offset_y + offset_x;
+  const uint8_t* u_plane =
+      src.DataU() + src.StrideU() * uv_offset_y + uv_offset_x;
+  const uint8_t* v_plane =
+      src.DataV() + src.StrideV() * uv_offset_y + uv_offset_x;
+  int res =
+      libyuv::I420Scale(y_plane, src.StrideY(), u_plane, src.StrideU(), v_plane,
+                        src.StrideV(), crop_width, crop_height, MutableDataY(),
+                        StrideY(), MutableDataU(), StrideU(), MutableDataV(),
+                        StrideV(), width(), height(), libyuv::kFilterBox);
+
+  RTC_DCHECK_EQ(res, 0);
+}
+
+void I420Buffer::CropAndScaleFrom(const I420BufferInterface& src) {
+  const int crop_width =
+      height() > 0 ? std::min(src.width(), width() * src.height() / height())
+                   : src.width();
+  const int crop_height =
+      width() > 0 ? std::min(src.height(), height() * src.width() / width())
+                  : src.height();
+
+  CropAndScaleFrom(src, (src.width() - crop_width) / 2,
+                   (src.height() - crop_height) / 2, crop_width, crop_height);
+}
+
+void I420Buffer::ScaleFrom(const I420BufferInterface& src) {
+  CropAndScaleFrom(src, 0, 0, src.width(), src.height());
+}
+
+}  // namespace webrtc