88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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* Copyright 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_API_JAVA_JNI_NATIVE_HANDLE_IMPL_H_
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#define WEBRTC_API_JAVA_JNI_NATIVE_HANDLE_IMPL_H_
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#include <jni.h>
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#include "webrtc/common_video/include/video_frame_buffer.h"
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#include "webrtc/common_video/rotation.h"
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namespace webrtc_jni {
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// Open gl texture matrix, in column-major order. Operations are
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// in-place.
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class Matrix {
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public:
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Matrix(JNIEnv* jni, jfloatArray a);
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jfloatArray ToJava(JNIEnv* jni);
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// Crop arguments are relative to original size.
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void Crop(float cropped_width,
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float cropped_height,
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float crop_x,
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float crop_y);
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void Rotate(webrtc::VideoRotation rotation);
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private:
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static void Multiply(const float a[16], const float b[16], float result[16]);
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float elem_[16];
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};
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// Wrapper for texture object.
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struct NativeHandleImpl {
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NativeHandleImpl(JNIEnv* jni,
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jint j_oes_texture_id,
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jfloatArray j_transform_matrix);
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NativeHandleImpl(int id, const Matrix& matrix);
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const int oes_texture_id;
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Matrix sampling_matrix;
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};
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class AndroidTextureBuffer : public webrtc::NativeHandleBuffer {
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public:
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AndroidTextureBuffer(int width,
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int height,
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const NativeHandleImpl& native_handle,
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jobject surface_texture_helper,
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const rtc::Callback0<void>& no_longer_used);
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~AndroidTextureBuffer();
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rtc::scoped_refptr<VideoFrameBuffer> NativeToI420Buffer() override;
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// First crop, then scale to dst resolution, and then rotate.
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rtc::scoped_refptr<AndroidTextureBuffer> CropScaleAndRotate(
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int cropped_width,
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int cropped_height,
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int crop_x,
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int crop_y,
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int dst_width,
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int dst_height,
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webrtc::VideoRotation rotation);
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private:
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NativeHandleImpl native_handle_;
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// Raw object pointer, relying on the caller, i.e.,
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// AndroidVideoCapturerJni or the C++ SurfaceTextureHelper, to keep
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// a global reference. TODO(nisse): Make this a reference to the C++
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// SurfaceTextureHelper instead, but that requires some refactoring
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// of AndroidVideoCapturerJni.
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jobject surface_texture_helper_;
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rtc::Callback0<void> no_longer_used_cb_;
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};
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} // namespace webrtc_jni
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#endif // WEBRTC_API_JAVA_JNI_NATIVE_HANDLE_IMPL_H_
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