Move talk/app/webrtc to webrtc/api

talk/app/webrtc/java/jni/native_handle_impl.cc

-/*
- * libjingle
- * Copyright 2015 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "talk/app/webrtc/java/jni/native_handle_impl.h"
-
-#include "talk/app/webrtc/java/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_ptr.h"
-#include "webrtc/base/scoped_ref_ptr.h"
-
-using webrtc::NativeHandleBuffer;
-
-namespace {
-
-void RotateMatrix(float a[16], 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] =
-          { a[4], a[5], a[6], a[7],
-            -a[0], -a[1], -a[2], -a[3],
-            a[8], a[9], a[10], a[11],
-            a[0] + a[12], a[1] + a[13], a[2] + a[14], a[3] + a[15]};
-      memcpy(a, ROTATE_90, sizeof(ROTATE_90));
-    } break;
-    case webrtc::kVideoRotation_180: {
-      const float ROTATE_180[16] =
-          { -a[0], -a[1], -a[2], -a[3],
-            -a[4], -a[5], -a[6], -a[7],
-            a[8], a[9], a[10], a[11],
-            a[0] + a[4] + a[12], a[1] +a[5] + a[13], a[2] + a[6] + a[14],
-            a[3] + a[11]+ a[15]};
-        memcpy(a, ROTATE_180, sizeof(ROTATE_180));
-      }
-      break;
-    case webrtc::kVideoRotation_270: {
-      const float ROTATE_270[16] =
-          { -a[4], -a[5], -a[6], -a[7],
-            a[0], a[1], a[2], a[3],
-            a[8], a[9], a[10], a[11],
-            a[4] + a[12], a[5] + a[13], a[6] + a[14], a[7] + a[15]};
-        memcpy(a, ROTATE_270, sizeof(ROTATE_270));
-    } break;
-  }
-}
-
-}  // anonymouse namespace
-
-namespace webrtc_jni {
-
-// Aligning pointer to 64 bytes for improved performance, e.g. use SIMD.
-static const int kBufferAlignment = 64;
-
-NativeHandleImpl::NativeHandleImpl(JNIEnv* jni,
-                                   jint j_oes_texture_id,
-                                   jfloatArray j_transform_matrix)
-  : oes_texture_id(j_oes_texture_id) {
-  RTC_CHECK_EQ(16, jni->GetArrayLength(j_transform_matrix));
-  jfloat* transform_matrix_ptr =
-      jni->GetFloatArrayElements(j_transform_matrix, nullptr);
-  for (int i = 0; i < 16; ++i) {
-    sampling_matrix[i] = transform_matrix_ptr[i];
-  }
-  jni->ReleaseFloatArrayElements(j_transform_matrix, transform_matrix_ptr, 0);
-}
-
-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.
-  rtc::scoped_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);
-
-  // TODO(nisse): Keep java transform matrix around.
-  jfloatArray sampling_matrix = jni->NewFloatArray(16);
-  jni->SetFloatArrayRegion(sampling_matrix, 0, 16,
-                           native_handle_.sampling_matrix);
-
-  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::ScaleAndRotate(int dst_widht,
-                                     int dst_height,
-                                     webrtc::VideoRotation rotation) {
-  if (width() == dst_widht && height() == dst_height &&
-      rotation == webrtc::kVideoRotation_0) {
-    return this;
-  }
-  int rotated_width = (rotation % 180 == 0) ? dst_widht : dst_height;
-  int rotated_height = (rotation % 180 == 0) ? dst_height : dst_widht;
-
-  // 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)));
-
-  RotateMatrix(buffer->native_handle_.sampling_matrix, rotation);
-  return buffer;
-}
-
-}  // namespace webrtc_jni