| /* |
| * Copyright 2017 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 "third_party/libyuv/include/libyuv/scale.h" |
| #include "webrtc/rtc_base/checks.h" |
| #include "webrtc/rtc_base/logging.h" |
| |
| namespace webrtc { |
| namespace jni { |
| |
| extern "C" JNIEXPORT void JNICALL |
| Java_org_webrtc_VideoFileRenderer_nativeI420Scale(JNIEnv* jni, |
| jclass, |
| jobject j_src_buffer_y, |
| jint j_src_stride_y, |
| jobject j_src_buffer_u, |
| jint j_src_stride_u, |
| jobject j_src_buffer_v, |
| jint j_src_stride_v, |
| jint width, |
| jint height, |
| jbyteArray j_dst_buffer, |
| jint dstWidth, |
| jint dstHeight) { |
| size_t src_size_y = jni->GetDirectBufferCapacity(j_src_buffer_y); |
| size_t src_size_u = jni->GetDirectBufferCapacity(j_src_buffer_u); |
| size_t src_size_v = jni->GetDirectBufferCapacity(j_src_buffer_v); |
| size_t dst_size = jni->GetDirectBufferCapacity(j_dst_buffer); |
| int dst_stride = dstWidth; |
| RTC_CHECK_GE(src_size_y, j_src_stride_y * height); |
| RTC_CHECK_GE(src_size_u, j_src_stride_u * height / 4); |
| RTC_CHECK_GE(src_size_v, j_src_stride_v * height / 4); |
| RTC_CHECK_GE(dst_size, dst_stride * dstHeight * 3 / 2); |
| uint8_t* src_y = |
| reinterpret_cast<uint8_t*>(jni->GetDirectBufferAddress(j_src_buffer_y)); |
| uint8_t* src_u = |
| reinterpret_cast<uint8_t*>(jni->GetDirectBufferAddress(j_src_buffer_u)); |
| uint8_t* src_v = |
| reinterpret_cast<uint8_t*>(jni->GetDirectBufferAddress(j_src_buffer_v)); |
| uint8_t* dst = |
| reinterpret_cast<uint8_t*>(jni->GetDirectBufferAddress(j_dst_buffer)); |
| |
| uint8_t* dst_y = dst; |
| size_t dst_stride_y = dst_stride; |
| uint8_t* dst_u = dst + dst_stride * dstHeight; |
| size_t dst_stride_u = dst_stride / 2; |
| uint8_t* dst_v = dst + dst_stride * dstHeight * 5 / 4; |
| size_t dst_stride_v = dst_stride / 2; |
| |
| int ret = libyuv::I420Scale( |
| src_y, j_src_stride_y, src_u, j_src_stride_u, src_v, j_src_stride_v, |
| width, height, dst_y, dst_stride_y, dst_u, dst_stride_u, dst_v, |
| dst_stride_v, dstWidth, dstHeight, libyuv::kFilterBilinear); |
| if (ret) { |
| LOG(LS_ERROR) << "Error scaling I420 frame: " << ret; |
| } |
| } |
| |
| extern "C" JNIEXPORT jobject JNICALL |
| Java_org_webrtc_VideoFileRenderer_nativeCreateNativeByteBuffer(JNIEnv* jni, |
| jclass, |
| jint size) { |
| void* new_data = ::operator new(size); |
| jobject byte_buffer = jni->NewDirectByteBuffer(new_data, size); |
| return byte_buffer; |
| } |
| |
| extern "C" JNIEXPORT void JNICALL |
| Java_org_webrtc_VideoFileRenderer_nativeFreeNativeByteBuffer( |
| JNIEnv* jni, |
| jclass, |
| jobject byte_buffer) { |
| void* data = jni->GetDirectBufferAddress(byte_buffer); |
| ::operator delete(data); |
| } |
| |
| } // namespace jni |
| } // namespace webrtc |