Revert of Combine webrtc/api/java/android and webrtc/api/java/src.

webrtc/api/android/jni/native_handle_impl.cc

-/*
- *  Copyright 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 "webrtc/api/android/jni/native_handle_impl.h"
-
-#include <memory>
-
-#include "webrtc/api/android/jni/jni_helpers.h"
-#include "webrtc/base/bind.h"
-#include "webrtc/base/checks.h"
-#include "webrtc/base/keep_ref_until_done.h"
-#include "webrtc/base/logging.h"
-#include "webrtc/base/scoped_ref_ptr.h"
-
-using webrtc::NativeHandleBuffer;
-
-namespace webrtc_jni {
-
-Matrix::Matrix(JNIEnv* jni, jfloatArray a) {
-  RTC_CHECK_EQ(16, jni->GetArrayLength(a));
-  jfloat* ptr = jni->GetFloatArrayElements(a, nullptr);
-  for (int i = 0; i < 16; ++i) {
-    elem_[i] = ptr[i];
-  }
-  jni->ReleaseFloatArrayElements(a, ptr, 0);
-}
-
-jfloatArray Matrix::ToJava(JNIEnv* jni) {
-  jfloatArray matrix = jni->NewFloatArray(16);
-  jni->SetFloatArrayRegion(matrix, 0, 16, elem_);
-  return matrix;
-}
-
-void Matrix::Rotate(webrtc::VideoRotation rotation) {
-  // Texture coordinates are in the range 0 to 1. The transformation of the last
-  // row in each rotation matrix is needed for proper translation, e.g, to
-  // mirror x, we don't replace x by -x, but by 1-x.
-  switch (rotation) {
-    case webrtc::kVideoRotation_0:
-      break;
-    case webrtc::kVideoRotation_90: {
-      const float ROTATE_90[16] =
-          { elem_[4], elem_[5], elem_[6], elem_[7],
-            -elem_[0], -elem_[1], -elem_[2], -elem_[3],
-            elem_[8], elem_[9], elem_[10], elem_[11],
-            elem_[0] + elem_[12], elem_[1] + elem_[13],
-            elem_[2] + elem_[14], elem_[3] + elem_[15]};
-      memcpy(elem_, ROTATE_90, sizeof(elem_));
-    } break;
-    case webrtc::kVideoRotation_180: {
-      const float ROTATE_180[16] =
-          { -elem_[0], -elem_[1], -elem_[2], -elem_[3],
-            -elem_[4], -elem_[5], -elem_[6], -elem_[7],
-            elem_[8], elem_[9], elem_[10], elem_[11],
-            elem_[0] + elem_[4] + elem_[12], elem_[1] + elem_[5] + elem_[13],
-            elem_[2] + elem_[6] + elem_[14], elem_[3] + elem_[11]+ elem_[15]};
-        memcpy(elem_, ROTATE_180, sizeof(elem_));
-    } break;
-    case webrtc::kVideoRotation_270: {
-      const float ROTATE_270[16] =
-          { -elem_[4], -elem_[5], -elem_[6], -elem_[7],
-            elem_[0], elem_[1], elem_[2], elem_[3],
-            elem_[8], elem_[9], elem_[10], elem_[11],
-            elem_[4] + elem_[12], elem_[5] + elem_[13],
-            elem_[6] + elem_[14], elem_[7] + elem_[15]};
-      memcpy(elem_, ROTATE_270, sizeof(elem_));
-    } break;
-  }
-}
-
-// Calculates result = a * b, in column-major order.
-void Matrix::Multiply(const float a[16], const float b[16], float result[16]) {
-  for (int i = 0; i < 4; ++i) {
-    for (int j = 0; j < 4; ++j) {
-      float sum = 0;
-      for (int k = 0; k < 4; ++k) {
-        sum += a[k * 4 + j] * b[i * 4 + k];
-      }
-      result[i * 4 + j] = sum;
-    }
-  }
-}
-
-// Center crop by keeping xFraction of the width and yFraction of the height,
-// so e.g. cropping from 640x480 to 640x360 would use
-// xFraction=1, yFraction=360/480.
-void Matrix::Crop(float xFraction,
-                  float yFraction,
-                  float xOffset,
-                  float yOffset) {
-  const float crop_matrix[16] =
-      {xFraction, 0, 0, 0,
-       0, yFraction, 0, 0,
-       0, 0, 1, 0,
-       xOffset, yOffset, 0, 1};
-  const Matrix old = *this;
-  Multiply(crop_matrix, old.elem_, this->elem_);
-}
-
-// Aligning pointer to 64 bytes for improved performance, e.g. use SIMD.
-static const int kBufferAlignment = 64;
-
-NativeHandleImpl::NativeHandleImpl(int id, const Matrix& matrix)
-    : oes_texture_id(id), sampling_matrix(matrix) {}
-
-NativeHandleImpl::NativeHandleImpl(JNIEnv* jni,
-                                   jint j_oes_texture_id,
-                                   jfloatArray j_transform_matrix)
-    : oes_texture_id(j_oes_texture_id),
-      sampling_matrix(jni, j_transform_matrix) {}
-
-AndroidTextureBuffer::AndroidTextureBuffer(
-    int width,
-    int height,
-    const NativeHandleImpl& native_handle,
-    jobject surface_texture_helper,
-    const rtc::Callback0<void>& no_longer_used)
-    : webrtc::NativeHandleBuffer(&native_handle_, width, height),
-      native_handle_(native_handle),
-      surface_texture_helper_(surface_texture_helper),
-      no_longer_used_cb_(no_longer_used) {}
-
-AndroidTextureBuffer::~AndroidTextureBuffer() {
-  no_longer_used_cb_();
-}
-
-rtc::scoped_refptr<webrtc::VideoFrameBuffer>
-AndroidTextureBuffer::NativeToI420Buffer() {
-  int uv_width = (width()+7) / 8;
-  int stride = 8 * uv_width;
-  int uv_height = (height()+1)/2;
-  size_t size = stride * (height() + uv_height);
-  // The data is owned by the frame, and the normal case is that the
-  // data is deleted by the frame's destructor callback.
-  //
-  // TODO(nisse): Use an I420BufferPool. We then need to extend that
-  // class, and I420Buffer, to support our memory layout.
-  std::unique_ptr<uint8_t, webrtc::AlignedFreeDeleter> yuv_data(
-      static_cast<uint8_t*>(webrtc::AlignedMalloc(size, kBufferAlignment)));
-  // See SurfaceTextureHelper.java for the required layout.
-  uint8_t* y_data = yuv_data.get();
-  uint8_t* u_data = y_data + height() * stride;
-  uint8_t* v_data = u_data + stride/2;
-
-  rtc::scoped_refptr<webrtc::VideoFrameBuffer> copy =
-    new rtc::RefCountedObject<webrtc::WrappedI420Buffer>(
-        width(), height(),
-        y_data, stride,
-        u_data, stride,
-        v_data, stride,
-        rtc::Bind(&webrtc::AlignedFree, yuv_data.release()));
-
-  JNIEnv* jni = AttachCurrentThreadIfNeeded();
-  ScopedLocalRefFrame local_ref_frame(jni);
-
-  jmethodID transform_mid = GetMethodID(
-      jni,
-      GetObjectClass(jni, surface_texture_helper_),
-      "textureToYUV",
-      "(Ljava/nio/ByteBuffer;IIII[F)V");
-
-  jobject byte_buffer = jni->NewDirectByteBuffer(y_data, size);
-
-  jfloatArray sampling_matrix = native_handle_.sampling_matrix.ToJava(jni);
-  jni->CallVoidMethod(surface_texture_helper_,
-                      transform_mid,
-                      byte_buffer, width(), height(), stride,
-                      native_handle_.oes_texture_id, sampling_matrix);
-  CHECK_EXCEPTION(jni) << "textureToYUV throwed an exception";
-
-  return copy;
-}
-
-rtc::scoped_refptr<AndroidTextureBuffer>
-AndroidTextureBuffer::CropScaleAndRotate(int cropped_width,
-                                         int cropped_height,
-                                         int crop_x,
-                                         int crop_y,
-                                         int dst_width,
-                                         int dst_height,
-                                         webrtc::VideoRotation rotation) {
-  if (cropped_width == dst_width && cropped_height == dst_height &&
-      width() == dst_width && height() == dst_height &&
-      rotation == webrtc::kVideoRotation_0) {
-    return this;
-  }
-  int rotated_width = (rotation % 180 == 0) ? dst_width : dst_height;
-  int rotated_height = (rotation % 180 == 0) ? dst_height : dst_width;
-
-  // Here we use Bind magic to add a reference count to |this| until the newly
-  // created AndroidTextureBuffer is destructed
-  rtc::scoped_refptr<AndroidTextureBuffer> buffer(
-      new rtc::RefCountedObject<AndroidTextureBuffer>(
-          rotated_width, rotated_height, native_handle_,
-          surface_texture_helper_, rtc::KeepRefUntilDone(this)));
-
-  if (cropped_width != width() || cropped_height != height()) {
-    buffer->native_handle_.sampling_matrix.Crop(
-        cropped_width / static_cast<float>(width()),
-        cropped_height / static_cast<float>(height()),
-        crop_x / static_cast<float>(width()),
-        crop_y / static_cast<float>(height()));
-  }
-  buffer->native_handle_.sampling_matrix.Rotate(rotation);
-  return buffer;
-}
-
-}  // namespace webrtc_jni