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rhubarb-lip-sync/rhubarb/lib/webrtc-8d2248ff/webrtc/api/java/jni/androidvideocapturer_jni.cc

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/*
* 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 "webrtc/api/java/jni/androidvideocapturer_jni.h"
#include "webrtc/api/java/jni/classreferenceholder.h"
#include "webrtc/api/java/jni/native_handle_impl.h"
#include "webrtc/api/java/jni/surfacetexturehelper_jni.h"
#include "third_party/libyuv/include/libyuv/convert.h"
#include "webrtc/base/bind.h"
namespace webrtc_jni {
jobject AndroidVideoCapturerJni::application_context_ = nullptr;
// static
int AndroidVideoCapturerJni::SetAndroidObjects(JNIEnv* jni,
jobject appliction_context) {
if (application_context_) {
jni->DeleteGlobalRef(application_context_);
}
application_context_ = NewGlobalRef(jni, appliction_context);
return 0;
}
AndroidVideoCapturerJni::AndroidVideoCapturerJni(JNIEnv* jni,
jobject j_video_capturer,
jobject j_egl_context)
: j_video_capturer_(jni, j_video_capturer),
j_video_capturer_class_(jni, FindClass(jni, "org/webrtc/VideoCapturer")),
j_observer_class_(
jni,
FindClass(jni,
"org/webrtc/VideoCapturer$NativeObserver")),
surface_texture_helper_(SurfaceTextureHelper::create(
jni, "Camera SurfaceTextureHelper", j_egl_context)),
capturer_(nullptr) {
LOG(LS_INFO) << "AndroidVideoCapturerJni ctor";
thread_checker_.DetachFromThread();
}
AndroidVideoCapturerJni::~AndroidVideoCapturerJni() {
LOG(LS_INFO) << "AndroidVideoCapturerJni dtor";
jni()->CallVoidMethod(
*j_video_capturer_,
GetMethodID(jni(), *j_video_capturer_class_, "dispose", "()V"));
CHECK_EXCEPTION(jni()) << "error during VideoCapturer.dispose()";
}
void AndroidVideoCapturerJni::Start(int width, int height, int framerate,
webrtc::AndroidVideoCapturer* capturer) {
LOG(LS_INFO) << "AndroidVideoCapturerJni start";
RTC_DCHECK(thread_checker_.CalledOnValidThread());
{
rtc::CritScope cs(&capturer_lock_);
RTC_CHECK(capturer_ == nullptr);
RTC_CHECK(invoker_.get() == nullptr);
capturer_ = capturer;
invoker_.reset(new rtc::GuardedAsyncInvoker());
}
jobject j_frame_observer =
jni()->NewObject(*j_observer_class_,
GetMethodID(jni(), *j_observer_class_, "<init>", "(J)V"),
jlongFromPointer(this));
CHECK_EXCEPTION(jni()) << "error during NewObject";
jmethodID m = GetMethodID(
jni(), *j_video_capturer_class_, "startCapture",
"(IIILorg/webrtc/SurfaceTextureHelper;Landroid/content/Context;"
"Lorg/webrtc/VideoCapturer$CapturerObserver;)V");
jni()->CallVoidMethod(
*j_video_capturer_, m, width, height, framerate,
surface_texture_helper_
? surface_texture_helper_->GetJavaSurfaceTextureHelper()
: nullptr,
application_context_, j_frame_observer);
CHECK_EXCEPTION(jni()) << "error during VideoCapturer.startCapture";
}
void AndroidVideoCapturerJni::Stop() {
LOG(LS_INFO) << "AndroidVideoCapturerJni stop";
RTC_DCHECK(thread_checker_.CalledOnValidThread());
{
// TODO(nisse): Consider moving this block until *after* the call to
// stopCapturer. stopCapturer should ensure that we get no
// more frames, and then we shouldn't need the if (!capturer_)
// checks in OnMemoryBufferFrame and OnTextureFrame.
rtc::CritScope cs(&capturer_lock_);
// Destroying |invoker_| will cancel all pending calls to |capturer_|.
invoker_ = nullptr;
capturer_ = nullptr;
}
jmethodID m = GetMethodID(jni(), *j_video_capturer_class_,
"stopCapture", "()V");
jni()->CallVoidMethod(*j_video_capturer_, m);
CHECK_EXCEPTION(jni()) << "error during VideoCapturer.stopCapture";
LOG(LS_INFO) << "AndroidVideoCapturerJni stop done";
}
template <typename... Args>
void AndroidVideoCapturerJni::AsyncCapturerInvoke(
const rtc::Location& posted_from,
void (webrtc::AndroidVideoCapturer::*method)(Args...),
typename Identity<Args>::type... args) {
rtc::CritScope cs(&capturer_lock_);
if (!invoker_) {
LOG(LS_WARNING) << posted_from.function_name()
<< "() called for closed capturer.";
return;
}
invoker_->AsyncInvoke<void>(posted_from,
rtc::Bind(method, capturer_, args...));
}
std::vector<cricket::VideoFormat>
AndroidVideoCapturerJni::GetSupportedFormats() {
JNIEnv* jni = AttachCurrentThreadIfNeeded();
jobject j_list_of_formats = jni->CallObjectMethod(
*j_video_capturer_,
GetMethodID(jni, *j_video_capturer_class_, "getSupportedFormats",
"()Ljava/util/List;"));
CHECK_EXCEPTION(jni) << "error during getSupportedFormats";
// Extract Java List<CaptureFormat> to std::vector<cricket::VideoFormat>.
jclass j_list_class = jni->FindClass("java/util/List");
jclass j_format_class =
jni->FindClass("org/webrtc/CameraEnumerationAndroid$CaptureFormat");
jclass j_framerate_class = jni->FindClass(
"org/webrtc/CameraEnumerationAndroid$CaptureFormat$FramerateRange");
const int size = jni->CallIntMethod(
j_list_of_formats, GetMethodID(jni, j_list_class, "size", "()I"));
jmethodID j_get =
GetMethodID(jni, j_list_class, "get", "(I)Ljava/lang/Object;");
jfieldID j_framerate_field = GetFieldID(
jni, j_format_class, "framerate",
"Lorg/webrtc/CameraEnumerationAndroid$CaptureFormat$FramerateRange;");
jfieldID j_width_field = GetFieldID(jni, j_format_class, "width", "I");
jfieldID j_height_field = GetFieldID(jni, j_format_class, "height", "I");
jfieldID j_max_framerate_field =
GetFieldID(jni, j_framerate_class, "max", "I");
std::vector<cricket::VideoFormat> formats;
formats.reserve(size);
for (int i = 0; i < size; ++i) {
jobject j_format = jni->CallObjectMethod(j_list_of_formats, j_get, i);
jobject j_framerate = GetObjectField(jni, j_format, j_framerate_field);
const int frame_interval = cricket::VideoFormat::FpsToInterval(
(GetIntField(jni, j_framerate, j_max_framerate_field) + 999) / 1000);
formats.emplace_back(GetIntField(jni, j_format, j_width_field),
GetIntField(jni, j_format, j_height_field),
frame_interval, cricket::FOURCC_NV21);
}
CHECK_EXCEPTION(jni) << "error while extracting formats";
return formats;
}
void AndroidVideoCapturerJni::OnCapturerStarted(bool success) {
LOG(LS_INFO) << "AndroidVideoCapturerJni capture started: " << success;
AsyncCapturerInvoke(
RTC_FROM_HERE, &webrtc::AndroidVideoCapturer::OnCapturerStarted, success);
}
void AndroidVideoCapturerJni::OnMemoryBufferFrame(void* video_frame,
int length,
int width,
int height,
int rotation,
int64_t timestamp_ns) {
RTC_DCHECK(rotation == 0 || rotation == 90 || rotation == 180 ||
rotation == 270);
rtc::CritScope cs(&capturer_lock_);
if (!capturer_) {
LOG(LS_WARNING) << "OnMemoryBufferFrame() called for closed capturer.";
return;
}
int adapted_width;
int adapted_height;
int crop_width;
int crop_height;
int crop_x;
int crop_y;
if (!capturer_->AdaptFrame(width, height, timestamp_ns,
&adapted_width, &adapted_height,
&crop_width, &crop_height, &crop_x, &crop_y)) {
return;
}
int rotated_width = crop_width;
int rotated_height = crop_height;
if (capturer_->apply_rotation() && (rotation == 90 || rotation == 270)) {
std::swap(adapted_width, adapted_height);
std::swap(rotated_width, rotated_height);
}
rtc::scoped_refptr<webrtc::VideoFrameBuffer> buffer =
pre_scale_pool_.CreateBuffer(rotated_width, rotated_height);
const uint8_t* y_plane = static_cast<const uint8_t*>(video_frame);
const uint8_t* uv_plane = y_plane + width * height;
// Can only crop at even pixels.
crop_x &= ~1;
crop_y &= ~1;
int uv_width = (width + 1) / 2;
libyuv::NV12ToI420Rotate(
y_plane + width * crop_y + crop_x, width,
uv_plane + uv_width * crop_y + crop_x, width,
buffer->MutableDataY(), buffer->StrideY(),
// Swap U and V, since we have NV21, not NV12.
buffer->MutableDataV(), buffer->StrideV(),
buffer->MutableDataU(), buffer->StrideU(),
crop_width, crop_height, static_cast<libyuv::RotationMode>(
capturer_->apply_rotation() ? rotation : 0));
if (adapted_width != buffer->width() || adapted_height != buffer->height()) {
rtc::scoped_refptr<webrtc::I420Buffer> scaled_buffer(
post_scale_pool_.CreateBuffer(adapted_width, adapted_height));
scaled_buffer->ScaleFrom(buffer);
buffer = scaled_buffer;
}
// TODO(nisse): Use microsecond time instead.
capturer_->OnFrame(cricket::WebRtcVideoFrame(
buffer, timestamp_ns,
capturer_->apply_rotation()
? webrtc::kVideoRotation_0
: static_cast<webrtc::VideoRotation>(rotation)),
width, height);
}
void AndroidVideoCapturerJni::OnTextureFrame(int width,
int height,
int rotation,
int64_t timestamp_ns,
const NativeHandleImpl& handle) {
RTC_DCHECK(rotation == 0 || rotation == 90 || rotation == 180 ||
rotation == 270);
rtc::CritScope cs(&capturer_lock_);
if (!capturer_) {
LOG(LS_WARNING) << "OnTextureFrame() called for closed capturer.";
surface_texture_helper_->ReturnTextureFrame();
return;
}
int adapted_width;
int adapted_height;
int crop_width;
int crop_height;
int crop_x;
int crop_y;
if (!capturer_->AdaptFrame(width, height, timestamp_ns,
&adapted_width, &adapted_height,
&crop_width, &crop_height, &crop_x, &crop_y)) {
surface_texture_helper_->ReturnTextureFrame();
return;
}
Matrix matrix = handle.sampling_matrix;
matrix.Crop(crop_width / static_cast<float>(width),
crop_height / static_cast<float>(height),
crop_x / static_cast<float>(width),
crop_y / static_cast<float>(height));
if (capturer_->apply_rotation()) {
if (rotation == webrtc::kVideoRotation_90 ||
rotation == webrtc::kVideoRotation_270) {
std::swap(adapted_width, adapted_height);
}
matrix.Rotate(static_cast<webrtc::VideoRotation>(rotation));
}
// TODO(nisse): Use microsecond time instead.
capturer_->OnFrame(
cricket::WebRtcVideoFrame(
surface_texture_helper_->CreateTextureFrame(
adapted_width, adapted_height,
NativeHandleImpl(handle.oes_texture_id, matrix)),
timestamp_ns, capturer_->apply_rotation()
? webrtc::kVideoRotation_0
: static_cast<webrtc::VideoRotation>(rotation)),
width, height);
}
void AndroidVideoCapturerJni::OnOutputFormatRequest(int width,
int height,
int fps) {
AsyncCapturerInvoke(RTC_FROM_HERE,
&webrtc::AndroidVideoCapturer::OnOutputFormatRequest,
width, height, fps);
}
JNIEnv* AndroidVideoCapturerJni::jni() { return AttachCurrentThreadIfNeeded(); }
JOW(void,
VideoCapturer_00024NativeObserver_nativeOnByteBufferFrameCaptured)
(JNIEnv* jni, jclass, jlong j_capturer, jbyteArray j_frame, jint length,
jint width, jint height, jint rotation, jlong timestamp) {
jboolean is_copy = true;
jbyte* bytes = jni->GetByteArrayElements(j_frame, &is_copy);
reinterpret_cast<AndroidVideoCapturerJni*>(j_capturer)
->OnMemoryBufferFrame(bytes, length, width, height, rotation, timestamp);
jni->ReleaseByteArrayElements(j_frame, bytes, JNI_ABORT);
}
JOW(void, VideoCapturer_00024NativeObserver_nativeOnTextureFrameCaptured)
(JNIEnv* jni, jclass, jlong j_capturer, jint j_width, jint j_height,
jint j_oes_texture_id, jfloatArray j_transform_matrix,
jint j_rotation, jlong j_timestamp) {
reinterpret_cast<AndroidVideoCapturerJni*>(j_capturer)
->OnTextureFrame(j_width, j_height, j_rotation, j_timestamp,
NativeHandleImpl(jni, j_oes_texture_id,
j_transform_matrix));
}
JOW(void, VideoCapturer_00024NativeObserver_nativeCapturerStarted)
(JNIEnv* jni, jclass, jlong j_capturer, jboolean j_success) {
LOG(LS_INFO) << "NativeObserver_nativeCapturerStarted";
reinterpret_cast<AndroidVideoCapturerJni*>(j_capturer)->OnCapturerStarted(
j_success);
}
JOW(void, VideoCapturer_00024NativeObserver_nativeOnOutputFormatRequest)
(JNIEnv* jni, jclass, jlong j_capturer, jint j_width, jint j_height,
jint j_fps) {
LOG(LS_INFO) << "NativeObserver_nativeOnOutputFormatRequest";
reinterpret_cast<AndroidVideoCapturerJni*>(j_capturer)->OnOutputFormatRequest(
j_width, j_height, j_fps);
}
} // namespace webrtc_jni
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