blob: 0d0153281eac1480a5dd07190cc117b6d976d5d1 [file] [log] [blame]
* 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 <jni.h>
#include "webrtc/common_video/include/video_frame_buffer.h"
#include "webrtc/common_video/rotation.h"
namespace webrtc_jni {
// Open gl texture matrix, in column-major order. Operations are
// in-place.
class Matrix {
Matrix(JNIEnv* jni, jfloatArray a);
jfloatArray ToJava(JNIEnv* jni);
// Crop arguments are relative to original size.
void Crop(float cropped_width,
float cropped_height,
float crop_x,
float crop_y);
void Rotate(webrtc::VideoRotation rotation);
static void Multiply(const float a[16], const float b[16], float result[16]);
float elem_[16];
// Wrapper for texture object.
struct NativeHandleImpl {
NativeHandleImpl(JNIEnv* jni,
jint j_oes_texture_id,
jfloatArray j_transform_matrix);
NativeHandleImpl(int id, const Matrix& matrix);
const int oes_texture_id;
Matrix sampling_matrix;
class AndroidTextureBuffer : public webrtc::NativeHandleBuffer {
AndroidTextureBuffer(int width,
int height,
const NativeHandleImpl& native_handle,
jobject surface_texture_helper,
const rtc::Callback0<void>& no_longer_used);
rtc::scoped_refptr<VideoFrameBuffer> NativeToI420Buffer() override;
// First crop, then scale to dst resolution, and then rotate.
rtc::scoped_refptr<AndroidTextureBuffer> CropScaleAndRotate(
int cropped_width,
int cropped_height,
int crop_x,
int crop_y,
int dst_width,
int dst_height,
webrtc::VideoRotation rotation);
NativeHandleImpl native_handle_;
// Raw object pointer, relying on the caller, i.e.,
// AndroidVideoCapturerJni or the C++ SurfaceTextureHelper, to keep
// a global reference. TODO(nisse): Make this a reference to the C++
// SurfaceTextureHelper instead, but that requires some refactoring
// of AndroidVideoCapturerJni.
jobject surface_texture_helper_;
rtc::Callback0<void> no_longer_used_cb_;
} // namespace webrtc_jni