84d8ae5df7
We currently use raw jobject in our code mixed with sporadic ScopedLocalRefFrame. This CL moves every jobject into a scoped object, either local, global, or a parameter. Also, this CL uses the JNI generation script to generate declaration stubs for the Java->C++ functions so that it no longer becomes possible to mistype them without getting compilation errors. TBR=brandt@webrtc.org Bug: webrtc:8278,webrtc:6969 Change-Id: Ic7bac74a89c11180177d65041086d7db1cdfb516 Reviewed-on: https://webrtc-review.googlesource.com/34655 Commit-Queue: Magnus Jedvert <magjed@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21387}
79 lines
3.3 KiB
C++
79 lines
3.3 KiB
C++
/*
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* Copyright 2017 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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#include <jni.h>
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#include <vector>
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#include "third_party/libyuv/include/libyuv/convert.h"
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#include "third_party/libyuv/include/libyuv/scale.h"
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#include "common_video/libyuv/include/webrtc_libyuv.h"
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#include "rtc_base/checks.h"
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#include "sdk/android/generated_video_jni/jni/NV21Buffer_jni.h"
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namespace webrtc {
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namespace jni {
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static void JNI_NV21Buffer_CropAndScale(JNIEnv* jni,
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const JavaParamRef<jclass>&,
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jint crop_x,
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jint crop_y,
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jint crop_width,
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jint crop_height,
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jint scale_width,
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jint scale_height,
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const JavaParamRef<jbyteArray>& j_src,
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jint src_width,
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jint src_height,
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const JavaParamRef<jobject>& j_dst_y,
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jint dst_stride_y,
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const JavaParamRef<jobject>& j_dst_u,
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jint dst_stride_u,
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const JavaParamRef<jobject>& j_dst_v,
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jint dst_stride_v) {
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const int src_stride_y = src_width;
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const int src_stride_uv = src_width;
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const int crop_chroma_x = crop_x / 2;
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const int crop_chroma_y = crop_y / 2;
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const int crop_chroma_width = (crop_width + 1) / 2;
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const int crop_chroma_height = (crop_height + 1) / 2;
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const int tmp_stride_u = crop_chroma_width;
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const int tmp_stride_v = crop_chroma_width;
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const int tmp_size = crop_chroma_height * (tmp_stride_u + tmp_stride_v);
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jboolean was_copy;
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jbyte* src_bytes = jni->GetByteArrayElements(j_src.obj(), &was_copy);
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RTC_DCHECK(!was_copy);
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uint8_t const* src_y = reinterpret_cast<uint8_t const*>(src_bytes);
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uint8_t const* src_uv = src_y + src_height * src_stride_y;
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uint8_t* dst_y =
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static_cast<uint8_t*>(jni->GetDirectBufferAddress(j_dst_y.obj()));
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uint8_t* dst_u =
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static_cast<uint8_t*>(jni->GetDirectBufferAddress(j_dst_u.obj()));
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uint8_t* dst_v =
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static_cast<uint8_t*>(jni->GetDirectBufferAddress(j_dst_v.obj()));
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// Crop using pointer arithmetic.
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src_y += crop_x + crop_y * src_stride_y;
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src_uv += crop_chroma_x + crop_chroma_y * src_stride_uv;
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NV12ToI420Scaler scaler;
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// U- and V-planes are swapped because this is NV21 not NV12.
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scaler.NV12ToI420Scale(src_y, src_stride_y, src_uv, src_stride_uv, crop_width,
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crop_height, dst_y, dst_stride_y, dst_v, dst_stride_v,
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dst_u, dst_stride_u, scale_width, scale_height);
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jni->ReleaseByteArrayElements(j_src.obj(), src_bytes, JNI_ABORT);
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}
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} // namespace jni
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} // namespace webrtc
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