| /* |
| * 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 "sdk/android/src/jni/videodecoderwrapper.h" |
| |
| #include "api/video/video_frame.h" |
| #include "modules/video_coding/include/video_codec_interface.h" |
| #include "modules/video_coding/utility/vp8_header_parser.h" |
| #include "modules/video_coding/utility/vp9_uncompressed_header_parser.h" |
| #include "rtc_base/logging.h" |
| #include "rtc_base/safe_conversions.h" |
| #include "rtc_base/timeutils.h" |
| #include "sdk/android/src/jni/classreferenceholder.h" |
| |
| namespace webrtc { |
| namespace jni { |
| |
| namespace { |
| template <typename Dst, typename Src> |
| inline rtc::Optional<Dst> cast_optional(const rtc::Optional<Src>& value) { |
| return value ? rtc::Optional<Dst>(rtc::dchecked_cast<Dst, Src>(*value)) |
| : rtc::nullopt; |
| } |
| } // namespace |
| |
| VideoDecoderWrapper::VideoDecoderWrapper(JNIEnv* jni, jobject decoder) |
| : decoder_(jni, decoder), |
| encoded_image_class_(jni, FindClass(jni, "org/webrtc/EncodedImage")), |
| frame_type_class_(jni, |
| FindClass(jni, "org/webrtc/EncodedImage$FrameType")), |
| settings_class_(jni, FindClass(jni, "org/webrtc/VideoDecoder$Settings")), |
| video_frame_class_(jni, FindClass(jni, "org/webrtc/VideoFrame")), |
| video_codec_status_class_(jni, |
| FindClass(jni, "org/webrtc/VideoCodecStatus")), |
| integer_class_(jni, jni->FindClass("java/lang/Integer")) { |
| encoded_image_constructor_ = |
| jni->GetMethodID(*encoded_image_class_, "<init>", |
| "(Ljava/nio/ByteBuffer;IIJLorg/webrtc/" |
| "EncodedImage$FrameType;IZLjava/lang/Integer;)V"); |
| settings_constructor_ = |
| jni->GetMethodID(*settings_class_, "<init>", "(III)V"); |
| |
| empty_frame_field_ = jni->GetStaticFieldID( |
| *frame_type_class_, "EmptyFrame", "Lorg/webrtc/EncodedImage$FrameType;"); |
| video_frame_key_field_ = |
| jni->GetStaticFieldID(*frame_type_class_, "VideoFrameKey", |
| "Lorg/webrtc/EncodedImage$FrameType;"); |
| video_frame_delta_field_ = |
| jni->GetStaticFieldID(*frame_type_class_, "VideoFrameDelta", |
| "Lorg/webrtc/EncodedImage$FrameType;"); |
| |
| video_frame_get_timestamp_ns_method_ = |
| jni->GetMethodID(*video_frame_class_, "getTimestampNs", "()J"); |
| |
| jclass decoder_class = jni->GetObjectClass(decoder); |
| init_decode_method_ = |
| jni->GetMethodID(decoder_class, "initDecode", |
| "(Lorg/webrtc/VideoDecoder$Settings;Lorg/webrtc/" |
| "VideoDecoder$Callback;)Lorg/webrtc/VideoCodecStatus;"); |
| release_method_ = jni->GetMethodID(decoder_class, "release", |
| "()Lorg/webrtc/VideoCodecStatus;"); |
| decode_method_ = jni->GetMethodID(decoder_class, "decode", |
| "(Lorg/webrtc/EncodedImage;Lorg/webrtc/" |
| "VideoDecoder$DecodeInfo;)Lorg/webrtc/" |
| "VideoCodecStatus;"); |
| get_prefers_late_decoding_method_ = |
| jni->GetMethodID(decoder_class, "getPrefersLateDecoding", "()Z"); |
| get_implementation_name_method_ = jni->GetMethodID( |
| decoder_class, "getImplementationName", "()Ljava/lang/String;"); |
| |
| get_number_method_ = |
| jni->GetMethodID(*video_codec_status_class_, "getNumber", "()I"); |
| |
| initialized_ = false; |
| // QP parsing starts enabled and we disable it if the decoder provides frames. |
| qp_parsing_enabled_ = true; |
| |
| implementation_name_ = GetImplementationName(jni); |
| } |
| |
| int32_t VideoDecoderWrapper::InitDecode(const VideoCodec* codec_settings, |
| int32_t number_of_cores) { |
| JNIEnv* jni = AttachCurrentThreadIfNeeded(); |
| ScopedLocalRefFrame local_ref_frame(jni); |
| |
| codec_settings_ = *codec_settings; |
| number_of_cores_ = number_of_cores; |
| return InitDecodeInternal(jni); |
| } |
| |
| int32_t VideoDecoderWrapper::InitDecodeInternal(JNIEnv* jni) { |
| jobject settings = |
| jni->NewObject(*settings_class_, settings_constructor_, number_of_cores_, |
| codec_settings_.width, codec_settings_.height); |
| |
| jclass callback_class = |
| FindClass(jni, "org/webrtc/VideoDecoderWrapperCallback"); |
| jmethodID callback_constructor = |
| jni->GetMethodID(callback_class, "<init>", "(J)V"); |
| jobject callback = jni->NewObject(callback_class, callback_constructor, |
| jlongFromPointer(this)); |
| |
| jobject ret = |
| jni->CallObjectMethod(*decoder_, init_decode_method_, settings, callback); |
| if (jni->CallIntMethod(ret, get_number_method_) == WEBRTC_VIDEO_CODEC_OK) { |
| initialized_ = true; |
| } |
| |
| // The decoder was reinitialized so re-enable the QP parsing in case it stops |
| // providing QP values. |
| qp_parsing_enabled_ = true; |
| |
| return HandleReturnCode(jni, ret); |
| } |
| |
| int32_t VideoDecoderWrapper::Decode( |
| const EncodedImage& input_image, |
| bool missing_frames, |
| const RTPFragmentationHeader* fragmentation, |
| const CodecSpecificInfo* codec_specific_info, |
| int64_t render_time_ms) { |
| if (!initialized_) { |
| // Most likely initializing the codec failed. |
| return WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE; |
| } |
| |
| JNIEnv* jni = AttachCurrentThreadIfNeeded(); |
| ScopedLocalRefFrame local_ref_frame(jni); |
| |
| FrameExtraInfo frame_extra_info; |
| frame_extra_info.capture_time_ns = |
| input_image.capture_time_ms_ * rtc::kNumNanosecsPerMillisec; |
| frame_extra_info.timestamp_rtp = input_image._timeStamp; |
| frame_extra_info.qp = |
| qp_parsing_enabled_ ? ParseQP(input_image) : rtc::nullopt; |
| frame_extra_infos_.push_back(frame_extra_info); |
| |
| jobject jinput_image = |
| ConvertEncodedImageToJavaEncodedImage(jni, input_image); |
| jobject ret = |
| jni->CallObjectMethod(*decoder_, decode_method_, jinput_image, nullptr); |
| return HandleReturnCode(jni, ret); |
| } |
| |
| int32_t VideoDecoderWrapper::RegisterDecodeCompleteCallback( |
| DecodedImageCallback* callback) { |
| callback_ = callback; |
| return WEBRTC_VIDEO_CODEC_OK; |
| } |
| |
| int32_t VideoDecoderWrapper::Release() { |
| JNIEnv* jni = AttachCurrentThreadIfNeeded(); |
| ScopedLocalRefFrame local_ref_frame(jni); |
| jobject ret = jni->CallObjectMethod(*decoder_, release_method_); |
| frame_extra_infos_.clear(); |
| initialized_ = false; |
| return HandleReturnCode(jni, ret); |
| } |
| |
| bool VideoDecoderWrapper::PrefersLateDecoding() const { |
| JNIEnv* jni = AttachCurrentThreadIfNeeded(); |
| return jni->CallBooleanMethod(*decoder_, get_prefers_late_decoding_method_); |
| } |
| |
| const char* VideoDecoderWrapper::ImplementationName() const { |
| return implementation_name_.c_str(); |
| } |
| |
| void VideoDecoderWrapper::OnDecodedFrame(JNIEnv* jni, |
| jobject jframe, |
| jobject jdecode_time_ms, |
| jobject jqp) { |
| const jlong capture_time_ns = |
| jni->CallLongMethod(jframe, video_frame_get_timestamp_ns_method_); |
| FrameExtraInfo frame_extra_info; |
| do { |
| if (frame_extra_infos_.empty()) { |
| RTC_LOG(LS_WARNING) << "Java decoder produced an unexpected frame."; |
| return; |
| } |
| |
| frame_extra_info = frame_extra_infos_.front(); |
| frame_extra_infos_.pop_front(); |
| // If the decoder might drop frames so iterate through the queue until we |
| // find a matching timestamp. |
| } while (frame_extra_info.capture_time_ns != capture_time_ns); |
| |
| VideoFrame frame = |
| JavaToNativeFrame(jni, jframe, frame_extra_info.timestamp_rtp); |
| |
| rtc::Optional<int32_t> decoding_time_ms = |
| JavaIntegerToOptionalInt(jni, jdecode_time_ms); |
| |
| rtc::Optional<uint8_t> decoder_qp = |
| cast_optional<uint8_t, int32_t>(JavaIntegerToOptionalInt(jni, jqp)); |
| // If the decoder provides QP values itself, no need to parse the bitstream. |
| // Enable QP parsing if decoder does not provide QP values itself. |
| qp_parsing_enabled_ = !decoder_qp.has_value(); |
| callback_->Decoded(frame, decoding_time_ms, |
| decoder_qp ? decoder_qp : frame_extra_info.qp); |
| } |
| |
| jobject VideoDecoderWrapper::ConvertEncodedImageToJavaEncodedImage( |
| JNIEnv* jni, |
| const EncodedImage& image) { |
| jobject buffer = jni->NewDirectByteBuffer(image._buffer, image._length); |
| jfieldID frame_type_field; |
| switch (image._frameType) { |
| case kEmptyFrame: |
| frame_type_field = empty_frame_field_; |
| break; |
| case kVideoFrameKey: |
| frame_type_field = video_frame_key_field_; |
| break; |
| case kVideoFrameDelta: |
| frame_type_field = video_frame_delta_field_; |
| break; |
| default: |
| RTC_NOTREACHED(); |
| return nullptr; |
| } |
| jobject frame_type = |
| jni->GetStaticObjectField(*frame_type_class_, frame_type_field); |
| jobject qp = nullptr; |
| if (image.qp_ != -1) { |
| qp = JavaIntegerFromInt(jni, image.qp_); |
| } |
| return jni->NewObject( |
| *encoded_image_class_, encoded_image_constructor_, buffer, |
| static_cast<jint>(image._encodedWidth), |
| static_cast<jint>(image._encodedHeight), |
| static_cast<jlong>(image.capture_time_ms_ * rtc::kNumNanosecsPerMillisec), |
| frame_type, static_cast<jint>(image.rotation_), image._completeFrame, qp); |
| } |
| |
| int32_t VideoDecoderWrapper::HandleReturnCode(JNIEnv* jni, jobject code) { |
| int32_t value = jni->CallIntMethod(code, get_number_method_); |
| if (value < 0) { // Any errors are represented by negative values. |
| // Reset the codec. |
| if (Release() == WEBRTC_VIDEO_CODEC_OK) { |
| InitDecodeInternal(jni); |
| } |
| |
| RTC_LOG(LS_WARNING) << "Falling back to software decoder."; |
| return WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE; |
| } else { |
| return value; |
| } |
| } |
| |
| rtc::Optional<uint8_t> VideoDecoderWrapper::ParseQP( |
| const EncodedImage& input_image) { |
| if (input_image.qp_ != -1) { |
| return input_image.qp_; |
| } |
| |
| rtc::Optional<uint8_t> qp; |
| switch (codec_settings_.codecType) { |
| case kVideoCodecVP8: { |
| int qp_int; |
| if (vp8::GetQp(input_image._buffer, input_image._length, &qp_int)) { |
| qp = qp_int; |
| } |
| break; |
| } |
| case kVideoCodecVP9: { |
| int qp_int; |
| if (vp9::GetQp(input_image._buffer, input_image._length, &qp_int)) { |
| qp = qp_int; |
| } |
| break; |
| } |
| case kVideoCodecH264: { |
| h264_bitstream_parser_.ParseBitstream(input_image._buffer, |
| input_image._length); |
| int qp_int; |
| if (h264_bitstream_parser_.GetLastSliceQp(&qp_int)) { |
| qp = qp_int; |
| } |
| break; |
| } |
| default: |
| break; // Default is to not provide QP. |
| } |
| return qp; |
| } |
| |
| std::string VideoDecoderWrapper::GetImplementationName(JNIEnv* jni) const { |
| jstring jname = reinterpret_cast<jstring>( |
| jni->CallObjectMethod(*decoder_, get_implementation_name_method_)); |
| return JavaToStdString(jni, jname); |
| } |
| |
| JNI_FUNCTION_DECLARATION(void, |
| VideoDecoderWrapperCallback_nativeOnDecodedFrame, |
| JNIEnv* jni, |
| jclass, |
| jlong jnative_decoder, |
| jobject jframe, |
| jobject jdecode_time_ms, |
| jobject jqp) { |
| VideoDecoderWrapper* native_decoder = |
| reinterpret_cast<VideoDecoderWrapper*>(jnative_decoder); |
| native_decoder->OnDecodedFrame(jni, jframe, jdecode_time_ms, jqp); |
| } |
| |
| } // namespace jni |
| } // namespace webrtc |
