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

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Added WebRTC library
2016-06-21 20:13:05 +00:00
/*
* 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.
*/
// NOTICE: androidmediaencoder_jni.h must be included before
// androidmediacodeccommon.h to avoid build errors.
#include "webrtc/api/java/jni/androidmediaencoder_jni.h"
#include <algorithm>
#include <memory>
#include <list>
#include "third_party/libyuv/include/libyuv/convert.h"
#include "third_party/libyuv/include/libyuv/convert_from.h"
#include "third_party/libyuv/include/libyuv/video_common.h"
#include "webrtc/api/java/jni/androidmediacodeccommon.h"
#include "webrtc/api/java/jni/classreferenceholder.h"
#include "webrtc/api/java/jni/native_handle_impl.h"
#include "webrtc/base/bind.h"
#include "webrtc/base/checks.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/thread.h"
#include "webrtc/base/thread_checker.h"
#include "webrtc/base/timeutils.h"
#include "webrtc/common_types.h"
#include "webrtc/modules/video_coding/include/video_codec_interface.h"
#include "webrtc/modules/video_coding/utility/h264_bitstream_parser.h"
#include "webrtc/modules/video_coding/utility/quality_scaler.h"
#include "webrtc/modules/video_coding/utility/vp8_header_parser.h"
#include "webrtc/system_wrappers/include/field_trial.h"
#include "webrtc/system_wrappers/include/logcat_trace_context.h"
using rtc::Bind;
using rtc::Thread;
using rtc::ThreadManager;
using webrtc::CodecSpecificInfo;
using webrtc::EncodedImage;
using webrtc::VideoFrame;
using webrtc::RTPFragmentationHeader;
using webrtc::VideoCodec;
using webrtc::VideoCodecType;
using webrtc::kVideoCodecH264;
using webrtc::kVideoCodecVP8;
using webrtc::kVideoCodecVP9;
using webrtc::QualityScaler;
namespace webrtc_jni {
// H.264 start code length.
#define H264_SC_LENGTH 4
// Maximum allowed NALUs in one output frame.
#define MAX_NALUS_PERFRAME 32
// Maximum supported HW video encoder resolution.
#define MAX_VIDEO_WIDTH 1280
#define MAX_VIDEO_HEIGHT 1280
// Maximum supported HW video encoder fps.
#define MAX_VIDEO_FPS 30
// Maximum allowed fps value in SetRates() call.
#define MAX_ALLOWED_VIDEO_FPS 60
// Maximum allowed frames in encoder input queue.
#define MAX_ENCODER_Q_SIZE 2
// Maximum amount of dropped frames caused by full encoder queue - exceeding
// this threshold means that encoder probably got stuck and need to be reset.
#define ENCODER_STALL_FRAMEDROP_THRESHOLD 60
// Logging macros.
#define TAG_ENCODER "MediaCodecVideoEncoder"
#ifdef TRACK_BUFFER_TIMING
#define ALOGV(...)
__android_log_print(ANDROID_LOG_VERBOSE, TAG_ENCODER, __VA_ARGS__)
#else
#define ALOGV(...)
#endif
#define ALOGD LOG_TAG(rtc::LS_INFO, TAG_ENCODER)
#define ALOGW LOG_TAG(rtc::LS_WARNING, TAG_ENCODER)
#define ALOGE LOG_TAG(rtc::LS_ERROR, TAG_ENCODER)
namespace {
// Maximum time limit between incoming frames before requesting a key frame.
const size_t kFrameDiffThresholdMs = 1100;
const int kMinKeyFrameInterval = 2;
} // namespace
// MediaCodecVideoEncoder is a webrtc::VideoEncoder implementation that uses
// Android's MediaCodec SDK API behind the scenes to implement (hopefully)
// HW-backed video encode. This C++ class is implemented as a very thin shim,
// delegating all of the interesting work to org.webrtc.MediaCodecVideoEncoder.
// MediaCodecVideoEncoder is created, operated, and destroyed on a single
// thread, currently the libjingle Worker thread.
class MediaCodecVideoEncoder : public webrtc::VideoEncoder,
public rtc::MessageHandler {
public:
virtual ~MediaCodecVideoEncoder();
MediaCodecVideoEncoder(JNIEnv* jni,
VideoCodecType codecType,
jobject egl_context);
// webrtc::VideoEncoder implementation. Everything trampolines to
// |codec_thread_| for execution.
int32_t InitEncode(const webrtc::VideoCodec* codec_settings,
int32_t /* number_of_cores */,
size_t /* max_payload_size */) override;
int32_t Encode(const webrtc::VideoFrame& input_image,
const webrtc::CodecSpecificInfo* /* codec_specific_info */,
const std::vector<webrtc::FrameType>* frame_types) override;
int32_t RegisterEncodeCompleteCallback(
webrtc::EncodedImageCallback* callback) override;
int32_t Release() override;
int32_t SetChannelParameters(uint32_t /* packet_loss */,
int64_t /* rtt */) override;
int32_t SetRates(uint32_t new_bit_rate, uint32_t frame_rate) override;
// rtc::MessageHandler implementation.
void OnMessage(rtc::Message* msg) override;
void OnDroppedFrame() override;
bool SupportsNativeHandle() const override { return egl_context_ != nullptr; }
const char* ImplementationName() const override;
private:
// ResetCodecOnCodecThread() calls ReleaseOnCodecThread() and
// InitEncodeOnCodecThread() in an attempt to restore the codec to an
// operable state. Necessary after all manner of OMX-layer errors.
bool ResetCodecOnCodecThread();
// Implementation of webrtc::VideoEncoder methods above, all running on the
// codec thread exclusively.
//
// If width==0 then this is assumed to be a re-initialization and the
// previously-current values are reused instead of the passed parameters
// (makes it easier to reason about thread-safety).
int32_t InitEncodeOnCodecThread(int width, int height, int kbps, int fps,
bool use_surface);
// Reconfigure to match |frame| in width, height. Also reconfigures the
// encoder if |frame| is a texture/byte buffer and the encoder is initialized
// for byte buffer/texture. Returns false if reconfiguring fails.
bool MaybeReconfigureEncoderOnCodecThread(const webrtc::VideoFrame& frame);
int32_t EncodeOnCodecThread(
const webrtc::VideoFrame& input_image,
const std::vector<webrtc::FrameType>* frame_types,
const int64_t frame_input_time_ms);
bool EncodeByteBufferOnCodecThread(JNIEnv* jni,
bool key_frame, const webrtc::VideoFrame& frame, int input_buffer_index);
bool EncodeTextureOnCodecThread(JNIEnv* jni,
bool key_frame, const webrtc::VideoFrame& frame);
int32_t RegisterEncodeCompleteCallbackOnCodecThread(
webrtc::EncodedImageCallback* callback);
int32_t ReleaseOnCodecThread();
int32_t SetRatesOnCodecThread(uint32_t new_bit_rate, uint32_t frame_rate);
void OnDroppedFrameOnCodecThread();
// Helper accessors for MediaCodecVideoEncoder$OutputBufferInfo members.
int GetOutputBufferInfoIndex(JNIEnv* jni, jobject j_output_buffer_info);
jobject GetOutputBufferInfoBuffer(JNIEnv* jni, jobject j_output_buffer_info);
bool GetOutputBufferInfoIsKeyFrame(JNIEnv* jni, jobject j_output_buffer_info);
jlong GetOutputBufferInfoPresentationTimestampUs(
JNIEnv* jni, jobject j_output_buffer_info);
// Deliver any outputs pending in the MediaCodec to our |callback_| and return
// true on success.
bool DeliverPendingOutputs(JNIEnv* jni);
// Search for H.264 start codes.
int32_t NextNaluPosition(uint8_t *buffer, size_t buffer_size);
// Displays encoder statistics.
void LogStatistics(bool force_log);
// Type of video codec.
VideoCodecType codecType_;
// Valid all the time since RegisterEncodeCompleteCallback() Invoke()s to
// |codec_thread_| synchronously.
webrtc::EncodedImageCallback* callback_;
// State that is constant for the lifetime of this object once the ctor
// returns.
std::unique_ptr<Thread>
codec_thread_; // Thread on which to operate MediaCodec.
rtc::ThreadChecker codec_thread_checker_;
ScopedGlobalRef<jclass> j_media_codec_video_encoder_class_;
ScopedGlobalRef<jobject> j_media_codec_video_encoder_;
jmethodID j_init_encode_method_;
jmethodID j_get_input_buffers_method_;
jmethodID j_dequeue_input_buffer_method_;
jmethodID j_encode_buffer_method_;
jmethodID j_encode_texture_method_;
jmethodID j_release_method_;
jmethodID j_set_rates_method_;
jmethodID j_dequeue_output_buffer_method_;
jmethodID j_release_output_buffer_method_;
jfieldID j_color_format_field_;
jfieldID j_info_index_field_;
jfieldID j_info_buffer_field_;
jfieldID j_info_is_key_frame_field_;
jfieldID j_info_presentation_timestamp_us_field_;
// State that is valid only between InitEncode() and the next Release().
// Touched only on codec_thread_ so no explicit synchronization necessary.
int width_; // Frame width in pixels.
int height_; // Frame height in pixels.
bool inited_;
bool use_surface_;
uint16_t picture_id_;
enum libyuv::FourCC encoder_fourcc_; // Encoder color space format.
int last_set_bitrate_kbps_; // Last-requested bitrate in kbps.
int last_set_fps_; // Last-requested frame rate.
int64_t current_timestamp_us_; // Current frame timestamps in us.
int frames_received_; // Number of frames received by encoder.
int frames_encoded_; // Number of frames encoded by encoder.
int frames_dropped_media_encoder_; // Number of frames dropped by encoder.
// Number of dropped frames caused by full queue.
int consecutive_full_queue_frame_drops_;
int64_t stat_start_time_ms_; // Start time for statistics.
int current_frames_; // Number of frames in the current statistics interval.
int current_bytes_; // Encoded bytes in the current statistics interval.
int current_acc_qp_; // Accumulated QP in the current statistics interval.
int current_encoding_time_ms_; // Overall encoding time in the current second
int64_t last_input_timestamp_ms_; // Timestamp of last received yuv frame.
int64_t last_output_timestamp_ms_; // Timestamp of last encoded frame.
struct InputFrameInfo {
InputFrameInfo(int64_t encode_start_time,
int32_t frame_timestamp,
int64_t frame_render_time_ms,
webrtc::VideoRotation rotation)
: encode_start_time(encode_start_time),
frame_timestamp(frame_timestamp),
frame_render_time_ms(frame_render_time_ms),
rotation(rotation) {}
// Time when video frame is sent to encoder input.
const int64_t encode_start_time;
// Input frame information.
const int32_t frame_timestamp;
const int64_t frame_render_time_ms;
const webrtc::VideoRotation rotation;
};
std::list<InputFrameInfo> input_frame_infos_;
int32_t output_timestamp_; // Last output frame timestamp from
// |input_frame_infos_|.
int64_t output_render_time_ms_; // Last output frame render time from
// |input_frame_infos_|.
webrtc::VideoRotation output_rotation_; // Last output frame rotation from
// |input_frame_infos_|.
// Frame size in bytes fed to MediaCodec.
int yuv_size_;
// True only when between a callback_->Encoded() call return a positive value
// and the next Encode() call being ignored.
bool drop_next_input_frame_;
// Global references; must be deleted in Release().
std::vector<jobject> input_buffers_;
QualityScaler quality_scaler_;
// Dynamic resolution change, off by default.
bool scale_;
// H264 bitstream parser, used to extract QP from encoded bitstreams.
webrtc::H264BitstreamParser h264_bitstream_parser_;
// VP9 variables to populate codec specific structure.
webrtc::GofInfoVP9 gof_; // Contains each frame's temporal information for
// non-flexible VP9 mode.
uint8_t tl0_pic_idx_;
size_t gof_idx_;
// EGL context - owned by factory, should not be allocated/destroyed
// by MediaCodecVideoEncoder.
jobject egl_context_;
// Temporary fix for VP8.
// Sends a key frame if frames are largely spaced apart (possibly
// corresponding to a large image change).
int64_t last_frame_received_ms_;
int frames_received_since_last_key_;
webrtc::VideoCodecMode codec_mode_;
};
MediaCodecVideoEncoder::~MediaCodecVideoEncoder() {
// Call Release() to ensure no more callbacks to us after we are deleted.
Release();
}
MediaCodecVideoEncoder::MediaCodecVideoEncoder(
JNIEnv* jni, VideoCodecType codecType, jobject egl_context) :
codecType_(codecType),
callback_(NULL),
codec_thread_(new Thread()),
j_media_codec_video_encoder_class_(
jni,
FindClass(jni, "org/webrtc/MediaCodecVideoEncoder")),
j_media_codec_video_encoder_(
jni,
jni->NewObject(*j_media_codec_video_encoder_class_,
GetMethodID(jni,
*j_media_codec_video_encoder_class_,
"<init>",
"()V"))),
inited_(false),
use_surface_(false),
picture_id_(0),
egl_context_(egl_context) {
ScopedLocalRefFrame local_ref_frame(jni);
// It would be nice to avoid spinning up a new thread per MediaCodec, and
// instead re-use e.g. the PeerConnectionFactory's |worker_thread_|, but bug
// 2732 means that deadlocks abound. This class synchronously trampolines
// to |codec_thread_|, so if anything else can be coming to _us_ from
// |codec_thread_|, or from any thread holding the |_sendCritSect| described
// in the bug, we have a problem. For now work around that with a dedicated
// thread.
codec_thread_->SetName("MediaCodecVideoEncoder", NULL);
RTC_CHECK(codec_thread_->Start()) << "Failed to start MediaCodecVideoEncoder";
codec_thread_checker_.DetachFromThread();
jclass j_output_buffer_info_class =
FindClass(jni, "org/webrtc/MediaCodecVideoEncoder$OutputBufferInfo");
j_init_encode_method_ = GetMethodID(
jni,
*j_media_codec_video_encoder_class_,
"initEncode",
"(Lorg/webrtc/MediaCodecVideoEncoder$VideoCodecType;"
"IIIILorg/webrtc/EglBase14$Context;)Z");
j_get_input_buffers_method_ = GetMethodID(
jni,
*j_media_codec_video_encoder_class_,
"getInputBuffers",
"()[Ljava/nio/ByteBuffer;");
j_dequeue_input_buffer_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "dequeueInputBuffer", "()I");
j_encode_buffer_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "encodeBuffer", "(ZIIJ)Z");
j_encode_texture_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "encodeTexture",
"(ZI[FJ)Z");
j_release_method_ =
GetMethodID(jni, *j_media_codec_video_encoder_class_, "release", "()V");
j_set_rates_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "setRates", "(II)Z");
j_dequeue_output_buffer_method_ = GetMethodID(
jni,
*j_media_codec_video_encoder_class_,
"dequeueOutputBuffer",
"()Lorg/webrtc/MediaCodecVideoEncoder$OutputBufferInfo;");
j_release_output_buffer_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "releaseOutputBuffer", "(I)Z");
j_color_format_field_ =
GetFieldID(jni, *j_media_codec_video_encoder_class_, "colorFormat", "I");
j_info_index_field_ =
GetFieldID(jni, j_output_buffer_info_class, "index", "I");
j_info_buffer_field_ = GetFieldID(
jni, j_output_buffer_info_class, "buffer", "Ljava/nio/ByteBuffer;");
j_info_is_key_frame_field_ =
GetFieldID(jni, j_output_buffer_info_class, "isKeyFrame", "Z");
j_info_presentation_timestamp_us_field_ = GetFieldID(
jni, j_output_buffer_info_class, "presentationTimestampUs", "J");
CHECK_EXCEPTION(jni) << "MediaCodecVideoEncoder ctor failed";
srand(time(NULL));
AllowBlockingCalls();
}
int32_t MediaCodecVideoEncoder::InitEncode(
const webrtc::VideoCodec* codec_settings,
int32_t /* number_of_cores */,
size_t /* max_payload_size */) {
if (codec_settings == NULL) {
ALOGE << "NULL VideoCodec instance";
return WEBRTC_VIDEO_CODEC_ERR_PARAMETER;
}
// Factory should guard against other codecs being used with us.
RTC_CHECK(codec_settings->codecType == codecType_)
<< "Unsupported codec " << codec_settings->codecType << " for "
<< codecType_;
codec_mode_ = codec_settings->mode;
int init_width = codec_settings->width;
int init_height = codec_settings->height;
scale_ = codecType_ != kVideoCodecVP9;
ALOGD << "InitEncode request: " << init_width << " x " << init_height;
ALOGD << "Encoder automatic resize " << (scale_ ? "enabled" : "disabled");
if (scale_) {
if (codecType_ == kVideoCodecVP8) {
quality_scaler_.Init(
QualityScaler::kLowVp8QpThreshold, QualityScaler::kBadVp8QpThreshold,
codec_settings->startBitrate, codec_settings->width,
codec_settings->height, codec_settings->maxFramerate);
} else if (codecType_ == kVideoCodecH264) {
quality_scaler_.Init(QualityScaler::kLowH264QpThreshold,
QualityScaler::kBadH264QpThreshold,
codec_settings->startBitrate, codec_settings->width,
codec_settings->height,
codec_settings->maxFramerate);
} else {
// When adding codec support to additional hardware codecs, also configure
// their QP thresholds for scaling.
RTC_NOTREACHED() << "Unsupported codec without configured QP thresholds.";
scale_ = false;
}
QualityScaler::Resolution res = quality_scaler_.GetScaledResolution();
init_width = res.width;
init_height = res.height;
ALOGD << "Scaled resolution: " << init_width << " x " << init_height;
}
return codec_thread_->Invoke<int32_t>(
RTC_FROM_HERE,
Bind(&MediaCodecVideoEncoder::InitEncodeOnCodecThread, this, init_width,
init_height, codec_settings->startBitrate,
codec_settings->maxFramerate,
codec_settings->expect_encode_from_texture));
}
int32_t MediaCodecVideoEncoder::Encode(
const webrtc::VideoFrame& frame,
const webrtc::CodecSpecificInfo* /* codec_specific_info */,
const std::vector<webrtc::FrameType>* frame_types) {
return codec_thread_->Invoke<int32_t>(
RTC_FROM_HERE, Bind(&MediaCodecVideoEncoder::EncodeOnCodecThread, this,
frame, frame_types, rtc::TimeMillis()));
}
int32_t MediaCodecVideoEncoder::RegisterEncodeCompleteCallback(
webrtc::EncodedImageCallback* callback) {
return codec_thread_->Invoke<int32_t>(
RTC_FROM_HERE,
Bind(&MediaCodecVideoEncoder::RegisterEncodeCompleteCallbackOnCodecThread,
this, callback));
}
int32_t MediaCodecVideoEncoder::Release() {
ALOGD << "EncoderRelease request";
return codec_thread_->Invoke<int32_t>(
RTC_FROM_HERE, Bind(&MediaCodecVideoEncoder::ReleaseOnCodecThread, this));
}
int32_t MediaCodecVideoEncoder::SetChannelParameters(uint32_t /* packet_loss */,
int64_t /* rtt */) {
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::SetRates(uint32_t new_bit_rate,
uint32_t frame_rate) {
return codec_thread_->Invoke<int32_t>(
RTC_FROM_HERE, Bind(&MediaCodecVideoEncoder::SetRatesOnCodecThread, this,
new_bit_rate, frame_rate));
}
void MediaCodecVideoEncoder::OnMessage(rtc::Message* msg) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
// We only ever send one message to |this| directly (not through a Bind()'d
// functor), so expect no ID/data.
RTC_CHECK(!msg->message_id) << "Unexpected message!";
RTC_CHECK(!msg->pdata) << "Unexpected message!";
if (!inited_) {
return;
}
// It would be nice to recover from a failure here if one happened, but it's
// unclear how to signal such a failure to the app, so instead we stay silent
// about it and let the next app-called API method reveal the borkedness.
DeliverPendingOutputs(jni);
// If there aren't more frames to deliver, we can start polling at lower rate.
if (input_frame_infos_.empty()) {
codec_thread_->PostDelayed(RTC_FROM_HERE, kMediaCodecPollNoFramesMs, this);
} else {
codec_thread_->PostDelayed(RTC_FROM_HERE, kMediaCodecPollMs, this);
}
// Call log statistics here so it's called even if no frames are being
// delivered.
LogStatistics(false);
}
bool MediaCodecVideoEncoder::ResetCodecOnCodecThread() {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
ALOGE << "ResetOnCodecThread";
if (ReleaseOnCodecThread() != WEBRTC_VIDEO_CODEC_OK ||
InitEncodeOnCodecThread(width_, height_, 0, 0, false) !=
WEBRTC_VIDEO_CODEC_OK) {
// TODO(fischman): wouldn't it be nice if there was a way to gracefully
// degrade to a SW encoder at this point? There isn't one AFAICT :(
// https://code.google.com/p/webrtc/issues/detail?id=2920
return false;
}
return true;
}
int32_t MediaCodecVideoEncoder::InitEncodeOnCodecThread(
int width, int height, int kbps, int fps, bool use_surface) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
RTC_CHECK(!use_surface || egl_context_ != nullptr) << "EGL context not set.";
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
ALOGD << "InitEncodeOnCodecThread Type: " << (int)codecType_ << ", " <<
width << " x " << height << ". Bitrate: " << kbps <<
" kbps. Fps: " << fps;
if (kbps == 0) {
kbps = last_set_bitrate_kbps_;
}
if (fps == 0) {
fps = MAX_VIDEO_FPS;
}
width_ = width;
height_ = height;
last_set_bitrate_kbps_ = kbps;
last_set_fps_ = (fps < MAX_VIDEO_FPS) ? fps : MAX_VIDEO_FPS;
yuv_size_ = width_ * height_ * 3 / 2;
frames_received_ = 0;
frames_encoded_ = 0;
frames_dropped_media_encoder_ = 0;
consecutive_full_queue_frame_drops_ = 0;
current_timestamp_us_ = 0;
stat_start_time_ms_ = rtc::TimeMillis();
current_frames_ = 0;
current_bytes_ = 0;
current_acc_qp_ = 0;
current_encoding_time_ms_ = 0;
last_input_timestamp_ms_ = -1;
last_output_timestamp_ms_ = -1;
output_timestamp_ = 0;
output_render_time_ms_ = 0;
input_frame_infos_.clear();
drop_next_input_frame_ = false;
use_surface_ = use_surface;
picture_id_ = static_cast<uint16_t>(rand()) & 0x7FFF;
gof_.SetGofInfoVP9(webrtc::TemporalStructureMode::kTemporalStructureMode1);
tl0_pic_idx_ = static_cast<uint8_t>(rand());
gof_idx_ = 0;
last_frame_received_ms_ = -1;
frames_received_since_last_key_ = kMinKeyFrameInterval;
// We enforce no extra stride/padding in the format creation step.
jobject j_video_codec_enum = JavaEnumFromIndexAndClassName(
jni, "MediaCodecVideoEncoder$VideoCodecType", codecType_);
const bool encode_status = jni->CallBooleanMethod(
*j_media_codec_video_encoder_, j_init_encode_method_,
j_video_codec_enum, width, height, kbps, fps,
(use_surface ? egl_context_ : nullptr));
if (!encode_status) {
ALOGE << "Failed to configure encoder.";
return WEBRTC_VIDEO_CODEC_ERROR;
}
CHECK_EXCEPTION(jni);
if (!use_surface) {
jobjectArray input_buffers = reinterpret_cast<jobjectArray>(
jni->CallObjectMethod(*j_media_codec_video_encoder_,
j_get_input_buffers_method_));
CHECK_EXCEPTION(jni);
if (IsNull(jni, input_buffers)) {
return WEBRTC_VIDEO_CODEC_ERROR;
}
switch (GetIntField(jni, *j_media_codec_video_encoder_,
j_color_format_field_)) {
case COLOR_FormatYUV420Planar:
encoder_fourcc_ = libyuv::FOURCC_YU12;
break;
case COLOR_FormatYUV420SemiPlanar:
case COLOR_QCOM_FormatYUV420SemiPlanar:
case COLOR_QCOM_FORMATYUV420PackedSemiPlanar32m:
encoder_fourcc_ = libyuv::FOURCC_NV12;
break;
default:
LOG(LS_ERROR) << "Wrong color format.";
return WEBRTC_VIDEO_CODEC_ERROR;
}
size_t num_input_buffers = jni->GetArrayLength(input_buffers);
RTC_CHECK(input_buffers_.empty())
<< "Unexpected double InitEncode without Release";
input_buffers_.resize(num_input_buffers);
for (size_t i = 0; i < num_input_buffers; ++i) {
input_buffers_[i] =
jni->NewGlobalRef(jni->GetObjectArrayElement(input_buffers, i));
int64_t yuv_buffer_capacity =
jni->GetDirectBufferCapacity(input_buffers_[i]);
CHECK_EXCEPTION(jni);
RTC_CHECK(yuv_buffer_capacity >= yuv_size_) << "Insufficient capacity";
}
}
inited_ = true;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::EncodeOnCodecThread(
const webrtc::VideoFrame& frame,
const std::vector<webrtc::FrameType>* frame_types,
const int64_t frame_input_time_ms) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
if (!inited_) {
return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
}
bool send_key_frame = false;
if (codec_mode_ == webrtc::kRealtimeVideo) {
++frames_received_since_last_key_;
int64_t now_ms = rtc::TimeMillis();
if (last_frame_received_ms_ != -1 &&
(now_ms - last_frame_received_ms_) > kFrameDiffThresholdMs) {
// Add limit to prevent triggering a key for every frame for very low
// framerates (e.g. if frame diff > kFrameDiffThresholdMs).
if (frames_received_since_last_key_ > kMinKeyFrameInterval) {
ALOGD << "Send key, frame diff: " << (now_ms - last_frame_received_ms_);
send_key_frame = true;
}
frames_received_since_last_key_ = 0;
}
last_frame_received_ms_ = now_ms;
}
frames_received_++;
if (!DeliverPendingOutputs(jni)) {
if (!ResetCodecOnCodecThread())
return WEBRTC_VIDEO_CODEC_ERROR;
}
if (frames_encoded_ < kMaxEncodedLogFrames) {
ALOGD << "Encoder frame in # " << (frames_received_ - 1)
<< ". TS: " << (int)(current_timestamp_us_ / 1000)
<< ". Q: " << input_frame_infos_.size() << ". Fps: " << last_set_fps_
<< ". Kbps: " << last_set_bitrate_kbps_;
}
if (drop_next_input_frame_) {
ALOGW << "Encoder drop frame - failed callback.";
drop_next_input_frame_ = false;
current_timestamp_us_ += rtc::kNumMicrosecsPerSec / last_set_fps_;
frames_dropped_media_encoder_++;
OnDroppedFrameOnCodecThread();
return WEBRTC_VIDEO_CODEC_OK;
}
RTC_CHECK(frame_types->size() == 1) << "Unexpected stream count";
// Check if we accumulated too many frames in encoder input buffers and drop
// frame if so.
if (input_frame_infos_.size() > MAX_ENCODER_Q_SIZE) {
ALOGD << "Already " << input_frame_infos_.size()
<< " frames in the queue, dropping"
<< ". TS: " << (int)(current_timestamp_us_ / 1000)
<< ". Fps: " << last_set_fps_
<< ". Consecutive drops: " << consecutive_full_queue_frame_drops_;
current_timestamp_us_ += rtc::kNumMicrosecsPerSec / last_set_fps_;
consecutive_full_queue_frame_drops_++;
if (consecutive_full_queue_frame_drops_ >=
ENCODER_STALL_FRAMEDROP_THRESHOLD) {
ALOGE << "Encoder got stuck. Reset.";
ResetCodecOnCodecThread();
return WEBRTC_VIDEO_CODEC_ERROR;
}
frames_dropped_media_encoder_++;
OnDroppedFrameOnCodecThread();
return WEBRTC_VIDEO_CODEC_OK;
}
consecutive_full_queue_frame_drops_ = 0;
rtc::scoped_refptr<webrtc::VideoFrameBuffer> input_buffer(
frame.video_frame_buffer());
if (scale_) {
// Check framerate before spatial resolution change.
quality_scaler_.OnEncodeFrame(frame.width(), frame.height());
const webrtc::QualityScaler::Resolution scaled_resolution =
quality_scaler_.GetScaledResolution();
if (scaled_resolution.width != frame.width() ||
scaled_resolution.height != frame.height()) {
if (input_buffer->native_handle() != nullptr) {
input_buffer = static_cast<AndroidTextureBuffer*>(input_buffer.get())
->CropScaleAndRotate(frame.width(), frame.height(),
0, 0,
scaled_resolution.width,
scaled_resolution.height,
webrtc::kVideoRotation_0);
} else {
input_buffer = quality_scaler_.GetScaledBuffer(input_buffer);
}
}
}
VideoFrame input_frame(input_buffer, frame.timestamp(),
frame.render_time_ms(), frame.rotation());
if (!MaybeReconfigureEncoderOnCodecThread(input_frame)) {
ALOGE << "Failed to reconfigure encoder.";
return WEBRTC_VIDEO_CODEC_ERROR;
}
const bool key_frame =
frame_types->front() != webrtc::kVideoFrameDelta || send_key_frame;
bool encode_status = true;
if (!input_frame.video_frame_buffer()->native_handle()) {
int j_input_buffer_index = jni->CallIntMethod(*j_media_codec_video_encoder_,
j_dequeue_input_buffer_method_);
CHECK_EXCEPTION(jni);
if (j_input_buffer_index == -1) {
// Video codec falls behind - no input buffer available.
ALOGW << "Encoder drop frame - no input buffers available";
if (frames_received_ > 1) {
current_timestamp_us_ += rtc::kNumMicrosecsPerSec / last_set_fps_;
frames_dropped_media_encoder_++;
OnDroppedFrameOnCodecThread();
} else {
// Input buffers are not ready after codec initialization, HW is still
// allocating thme - this is expected and should not result in drop
// frame report.
frames_received_ = 0;
}
return WEBRTC_VIDEO_CODEC_OK; // TODO(fischman): see webrtc bug 2887.
} else if (j_input_buffer_index == -2) {
ResetCodecOnCodecThread();
return WEBRTC_VIDEO_CODEC_ERROR;
}
encode_status = EncodeByteBufferOnCodecThread(jni, key_frame, input_frame,
j_input_buffer_index);
} else {
encode_status = EncodeTextureOnCodecThread(jni, key_frame, input_frame);
}
if (!encode_status) {
ALOGE << "Failed encode frame with timestamp: " << input_frame.timestamp();
ResetCodecOnCodecThread();
return WEBRTC_VIDEO_CODEC_ERROR;
}
// Save input image timestamps for later output.
input_frame_infos_.emplace_back(
frame_input_time_ms, input_frame.timestamp(),
input_frame.render_time_ms(), input_frame.rotation());
last_input_timestamp_ms_ =
current_timestamp_us_ / rtc::kNumMicrosecsPerMillisec;
current_timestamp_us_ += rtc::kNumMicrosecsPerSec / last_set_fps_;
codec_thread_->Clear(this);
codec_thread_->PostDelayed(RTC_FROM_HERE, kMediaCodecPollMs, this);
if (!DeliverPendingOutputs(jni)) {
ALOGE << "Failed deliver pending outputs.";
ResetCodecOnCodecThread();
return WEBRTC_VIDEO_CODEC_ERROR;
}
return WEBRTC_VIDEO_CODEC_OK;
}
bool MediaCodecVideoEncoder::MaybeReconfigureEncoderOnCodecThread(
const webrtc::VideoFrame& frame) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
const bool is_texture_frame =
frame.video_frame_buffer()->native_handle() != nullptr;
const bool reconfigure_due_to_format = is_texture_frame != use_surface_;
const bool reconfigure_due_to_size =
frame.width() != width_ || frame.height() != height_;
if (reconfigure_due_to_format) {
ALOGD << "Reconfigure encoder due to format change. "
<< (use_surface_ ?
"Reconfiguring to encode from byte buffer." :
"Reconfiguring to encode from texture.");
LogStatistics(true);
}
if (reconfigure_due_to_size) {
ALOGW << "Reconfigure encoder due to frame resolution change from "
<< width_ << " x " << height_ << " to " << frame.width() << " x "
<< frame.height();
LogStatistics(true);
width_ = frame.width();
height_ = frame.height();
}
if (!reconfigure_due_to_format && !reconfigure_due_to_size)
return true;
ReleaseOnCodecThread();
return InitEncodeOnCodecThread(width_, height_, 0, 0 , is_texture_frame) ==
WEBRTC_VIDEO_CODEC_OK;
}
bool MediaCodecVideoEncoder::EncodeByteBufferOnCodecThread(JNIEnv* jni,
bool key_frame, const webrtc::VideoFrame& frame, int input_buffer_index) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
RTC_CHECK(!use_surface_);
jobject j_input_buffer = input_buffers_[input_buffer_index];
uint8_t* yuv_buffer =
reinterpret_cast<uint8_t*>(jni->GetDirectBufferAddress(j_input_buffer));
CHECK_EXCEPTION(jni);
RTC_CHECK(yuv_buffer) << "Indirect buffer??";
RTC_CHECK(!libyuv::ConvertFromI420(
frame.video_frame_buffer()->DataY(),
frame.video_frame_buffer()->StrideY(),
frame.video_frame_buffer()->DataU(),
frame.video_frame_buffer()->StrideU(),
frame.video_frame_buffer()->DataV(),
frame.video_frame_buffer()->StrideV(),
yuv_buffer, width_, width_, height_, encoder_fourcc_))
<< "ConvertFromI420 failed";
bool encode_status = jni->CallBooleanMethod(*j_media_codec_video_encoder_,
j_encode_buffer_method_,
key_frame,
input_buffer_index,
yuv_size_,
current_timestamp_us_);
CHECK_EXCEPTION(jni);
return encode_status;
}
bool MediaCodecVideoEncoder::EncodeTextureOnCodecThread(JNIEnv* jni,
bool key_frame, const webrtc::VideoFrame& frame) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
RTC_CHECK(use_surface_);
NativeHandleImpl* handle = static_cast<NativeHandleImpl*>(
frame.video_frame_buffer()->native_handle());
jfloatArray sampling_matrix = handle->sampling_matrix.ToJava(jni);
bool encode_status = jni->CallBooleanMethod(*j_media_codec_video_encoder_,
j_encode_texture_method_,
key_frame,
handle->oes_texture_id,
sampling_matrix,
current_timestamp_us_);
CHECK_EXCEPTION(jni);
return encode_status;
}
int32_t MediaCodecVideoEncoder::RegisterEncodeCompleteCallbackOnCodecThread(
webrtc::EncodedImageCallback* callback) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
callback_ = callback;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::ReleaseOnCodecThread() {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
if (!inited_) {
return WEBRTC_VIDEO_CODEC_OK;
}
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ALOGD << "EncoderReleaseOnCodecThread: Frames received: " <<
frames_received_ << ". Encoded: " << frames_encoded_ <<
". Dropped: " << frames_dropped_media_encoder_;
ScopedLocalRefFrame local_ref_frame(jni);
for (size_t i = 0; i < input_buffers_.size(); ++i)
jni->DeleteGlobalRef(input_buffers_[i]);
input_buffers_.clear();
jni->CallVoidMethod(*j_media_codec_video_encoder_, j_release_method_);
CHECK_EXCEPTION(jni);
rtc::MessageQueueManager::Clear(this);
inited_ = false;
use_surface_ = false;
ALOGD << "EncoderReleaseOnCodecThread done.";
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::SetRatesOnCodecThread(uint32_t new_bit_rate,
uint32_t frame_rate) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
frame_rate = (frame_rate < MAX_ALLOWED_VIDEO_FPS) ?
frame_rate : MAX_ALLOWED_VIDEO_FPS;
if (last_set_bitrate_kbps_ == new_bit_rate &&
last_set_fps_ == frame_rate) {
return WEBRTC_VIDEO_CODEC_OK;
}
if (scale_) {
quality_scaler_.ReportFramerate(frame_rate);
}
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
if (new_bit_rate > 0) {
last_set_bitrate_kbps_ = new_bit_rate;
}
if (frame_rate > 0) {
last_set_fps_ = frame_rate;
}
bool ret = jni->CallBooleanMethod(*j_media_codec_video_encoder_,
j_set_rates_method_,
last_set_bitrate_kbps_,
last_set_fps_);
CHECK_EXCEPTION(jni);
if (!ret) {
ResetCodecOnCodecThread();
return WEBRTC_VIDEO_CODEC_ERROR;
}
return WEBRTC_VIDEO_CODEC_OK;
}
int MediaCodecVideoEncoder::GetOutputBufferInfoIndex(
JNIEnv* jni,
jobject j_output_buffer_info) {
return GetIntField(jni, j_output_buffer_info, j_info_index_field_);
}
jobject MediaCodecVideoEncoder::GetOutputBufferInfoBuffer(
JNIEnv* jni,
jobject j_output_buffer_info) {
return GetObjectField(jni, j_output_buffer_info, j_info_buffer_field_);
}
bool MediaCodecVideoEncoder::GetOutputBufferInfoIsKeyFrame(
JNIEnv* jni,
jobject j_output_buffer_info) {
return GetBooleanField(jni, j_output_buffer_info, j_info_is_key_frame_field_);
}
jlong MediaCodecVideoEncoder::GetOutputBufferInfoPresentationTimestampUs(
JNIEnv* jni,
jobject j_output_buffer_info) {
return GetLongField(
jni, j_output_buffer_info, j_info_presentation_timestamp_us_field_);
}
bool MediaCodecVideoEncoder::DeliverPendingOutputs(JNIEnv* jni) {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
while (true) {
jobject j_output_buffer_info = jni->CallObjectMethod(
*j_media_codec_video_encoder_, j_dequeue_output_buffer_method_);
CHECK_EXCEPTION(jni);
if (IsNull(jni, j_output_buffer_info)) {
break;
}
int output_buffer_index =
GetOutputBufferInfoIndex(jni, j_output_buffer_info);
if (output_buffer_index == -1) {
ResetCodecOnCodecThread();
return false;
}
// Get key and config frame flags.
jobject j_output_buffer =
GetOutputBufferInfoBuffer(jni, j_output_buffer_info);
bool key_frame = GetOutputBufferInfoIsKeyFrame(jni, j_output_buffer_info);
// Get frame timestamps from a queue - for non config frames only.
int64_t encoding_start_time_ms = 0;
int64_t frame_encoding_time_ms = 0;
last_output_timestamp_ms_ =
GetOutputBufferInfoPresentationTimestampUs(jni, j_output_buffer_info) /
rtc::kNumMicrosecsPerMillisec;
if (!input_frame_infos_.empty()) {
const InputFrameInfo& frame_info = input_frame_infos_.front();
output_timestamp_ = frame_info.frame_timestamp;
output_render_time_ms_ = frame_info.frame_render_time_ms;
output_rotation_ = frame_info.rotation;
encoding_start_time_ms = frame_info.encode_start_time;
input_frame_infos_.pop_front();
}
// Extract payload.
size_t payload_size = jni->GetDirectBufferCapacity(j_output_buffer);
uint8_t* payload = reinterpret_cast<uint8_t*>(
jni->GetDirectBufferAddress(j_output_buffer));
CHECK_EXCEPTION(jni);
// Callback - return encoded frame.
int32_t callback_status = 0;
if (callback_) {
std::unique_ptr<webrtc::EncodedImage> image(
new webrtc::EncodedImage(payload, payload_size, payload_size));
image->_encodedWidth = width_;
image->_encodedHeight = height_;
image->_timeStamp = output_timestamp_;
image->capture_time_ms_ = output_render_time_ms_;
image->rotation_ = output_rotation_;
image->_frameType =
(key_frame ? webrtc::kVideoFrameKey : webrtc::kVideoFrameDelta);
image->_completeFrame = true;
image->adapt_reason_.quality_resolution_downscales =
scale_ ? quality_scaler_.downscale_shift() : -1;
webrtc::CodecSpecificInfo info;
memset(&info, 0, sizeof(info));
info.codecType = codecType_;
if (codecType_ == kVideoCodecVP8) {
info.codecSpecific.VP8.pictureId = picture_id_;
info.codecSpecific.VP8.nonReference = false;
info.codecSpecific.VP8.simulcastIdx = 0;
info.codecSpecific.VP8.temporalIdx = webrtc::kNoTemporalIdx;
info.codecSpecific.VP8.layerSync = false;
info.codecSpecific.VP8.tl0PicIdx = webrtc::kNoTl0PicIdx;
info.codecSpecific.VP8.keyIdx = webrtc::kNoKeyIdx;
} else if (codecType_ == kVideoCodecVP9) {
if (key_frame) {
gof_idx_ = 0;
}
info.codecSpecific.VP9.picture_id = picture_id_;
info.codecSpecific.VP9.inter_pic_predicted = key_frame ? false : true;
info.codecSpecific.VP9.flexible_mode = false;
info.codecSpecific.VP9.ss_data_available = key_frame ? true : false;
info.codecSpecific.VP9.tl0_pic_idx = tl0_pic_idx_++;
info.codecSpecific.VP9.temporal_idx = webrtc::kNoTemporalIdx;
info.codecSpecific.VP9.spatial_idx = webrtc::kNoSpatialIdx;
info.codecSpecific.VP9.temporal_up_switch = true;
info.codecSpecific.VP9.inter_layer_predicted = false;
info.codecSpecific.VP9.gof_idx =
static_cast<uint8_t>(gof_idx_++ % gof_.num_frames_in_gof);
info.codecSpecific.VP9.num_spatial_layers = 1;
info.codecSpecific.VP9.spatial_layer_resolution_present = false;
if (info.codecSpecific.VP9.ss_data_available) {
info.codecSpecific.VP9.spatial_layer_resolution_present = true;
info.codecSpecific.VP9.width[0] = width_;
info.codecSpecific.VP9.height[0] = height_;
info.codecSpecific.VP9.gof.CopyGofInfoVP9(gof_);
}
}
picture_id_ = (picture_id_ + 1) & 0x7FFF;
// Generate a header describing a single fragment.
webrtc::RTPFragmentationHeader header;
memset(&header, 0, sizeof(header));
if (codecType_ == kVideoCodecVP8 || codecType_ == kVideoCodecVP9) {
header.VerifyAndAllocateFragmentationHeader(1);
header.fragmentationOffset[0] = 0;
header.fragmentationLength[0] = image->_length;
header.fragmentationPlType[0] = 0;
header.fragmentationTimeDiff[0] = 0;
if (codecType_ == kVideoCodecVP8 && scale_) {
int qp;
if (webrtc::vp8::GetQp(payload, payload_size, &qp)) {
current_acc_qp_ += qp;
quality_scaler_.ReportQP(qp);
image->qp_ = qp;
}
}
} else if (codecType_ == kVideoCodecH264) {
if (scale_) {
h264_bitstream_parser_.ParseBitstream(payload, payload_size);
int qp;
if (h264_bitstream_parser_.GetLastSliceQp(&qp)) {
current_acc_qp_ += qp;
quality_scaler_.ReportQP(qp);
}
}
// For H.264 search for start codes.
int32_t scPositions[MAX_NALUS_PERFRAME + 1] = {};
int32_t scPositionsLength = 0;
int32_t scPosition = 0;
while (scPositionsLength < MAX_NALUS_PERFRAME) {
int32_t naluPosition = NextNaluPosition(
payload + scPosition, payload_size - scPosition);
if (naluPosition < 0) {
break;
}
scPosition += naluPosition;
scPositions[scPositionsLength++] = scPosition;
scPosition += H264_SC_LENGTH;
}
if (scPositionsLength == 0) {
ALOGE << "Start code is not found!";
ALOGE << "Data:" << image->_buffer[0] << " " << image->_buffer[1]
<< " " << image->_buffer[2] << " " << image->_buffer[3]
<< " " << image->_buffer[4] << " " << image->_buffer[5];
ResetCodecOnCodecThread();
return false;
}
scPositions[scPositionsLength] = payload_size;
header.VerifyAndAllocateFragmentationHeader(scPositionsLength);
for (size_t i = 0; i < scPositionsLength; i++) {
header.fragmentationOffset[i] = scPositions[i] + H264_SC_LENGTH;
header.fragmentationLength[i] =
scPositions[i + 1] - header.fragmentationOffset[i];
header.fragmentationPlType[i] = 0;
header.fragmentationTimeDiff[i] = 0;
}
}
callback_status = callback_->Encoded(*image, &info, &header);
}
// Return output buffer back to the encoder.
bool success = jni->CallBooleanMethod(*j_media_codec_video_encoder_,
j_release_output_buffer_method_,
output_buffer_index);
CHECK_EXCEPTION(jni);
if (!success) {
ResetCodecOnCodecThread();
return false;
}
// Print per frame statistics.
if (encoding_start_time_ms > 0) {
frame_encoding_time_ms = rtc::TimeMillis() - encoding_start_time_ms;
}
if (frames_encoded_ < kMaxEncodedLogFrames) {
int current_latency =
(int)(last_input_timestamp_ms_ - last_output_timestamp_ms_);
ALOGD << "Encoder frame out # " << frames_encoded_ <<
". Key: " << key_frame <<
". Size: " << payload_size <<
". TS: " << (int)last_output_timestamp_ms_ <<
". Latency: " << current_latency <<
". EncTime: " << frame_encoding_time_ms;
}
// Calculate and print encoding statistics - every 3 seconds.
frames_encoded_++;
current_frames_++;
current_bytes_ += payload_size;
current_encoding_time_ms_ += frame_encoding_time_ms;
LogStatistics(false);
if (callback_status > 0) {
drop_next_input_frame_ = true;
// Theoretically could handle callback_status<0 here, but unclear what
// that would mean for us.
}
}
return true;
}
void MediaCodecVideoEncoder::LogStatistics(bool force_log) {
int statistic_time_ms = rtc::TimeMillis() - stat_start_time_ms_;
if ((statistic_time_ms >= kMediaCodecStatisticsIntervalMs || force_log)
&& statistic_time_ms > 0) {
// Prevent division by zero.
int current_frames_divider = current_frames_ != 0 ? current_frames_ : 1;
int current_bitrate = current_bytes_ * 8 / statistic_time_ms;
int current_fps =
(current_frames_ * 1000 + statistic_time_ms / 2) / statistic_time_ms;
ALOGD << "Encoded frames: " << frames_encoded_ <<
". Bitrate: " << current_bitrate <<
", target: " << last_set_bitrate_kbps_ << " kbps" <<
", fps: " << current_fps <<
", encTime: " << (current_encoding_time_ms_ / current_frames_divider) <<
". QP: " << (current_acc_qp_ / current_frames_divider) <<
" for last " << statistic_time_ms << " ms.";
stat_start_time_ms_ = rtc::TimeMillis();
current_frames_ = 0;
current_bytes_ = 0;
current_acc_qp_ = 0;
current_encoding_time_ms_ = 0;
}
}
int32_t MediaCodecVideoEncoder::NextNaluPosition(
uint8_t *buffer, size_t buffer_size) {
if (buffer_size < H264_SC_LENGTH) {
return -1;
}
uint8_t *head = buffer;
// Set end buffer pointer to 4 bytes before actual buffer end so we can
// access head[1], head[2] and head[3] in a loop without buffer overrun.
uint8_t *end = buffer + buffer_size - H264_SC_LENGTH;
while (head < end) {
if (head[0]) {
head++;
continue;
}
if (head[1]) { // got 00xx
head += 2;
continue;
}
if (head[2]) { // got 0000xx
head += 3;
continue;
}
if (head[3] != 0x01) { // got 000000xx
head++; // xx != 1, continue searching.
continue;
}
return (int32_t)(head - buffer);
}
return -1;
}
void MediaCodecVideoEncoder::OnDroppedFrame() {
// Methods running on the codec thread should call OnDroppedFrameOnCodecThread
// directly.
RTC_DCHECK(!codec_thread_checker_.CalledOnValidThread());
codec_thread_->Invoke<void>(
RTC_FROM_HERE,
Bind(&MediaCodecVideoEncoder::OnDroppedFrameOnCodecThread, this));
}
void MediaCodecVideoEncoder::OnDroppedFrameOnCodecThread() {
RTC_DCHECK(codec_thread_checker_.CalledOnValidThread());
// Report dropped frame to quality_scaler_.
if (scale_)
quality_scaler_.ReportDroppedFrame();
}
const char* MediaCodecVideoEncoder::ImplementationName() const {
return "MediaCodec";
}
MediaCodecVideoEncoderFactory::MediaCodecVideoEncoderFactory()
: egl_context_(nullptr) {
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
jclass j_encoder_class = FindClass(jni, "org/webrtc/MediaCodecVideoEncoder");
supported_codecs_.clear();
bool is_vp8_hw_supported = jni->CallStaticBooleanMethod(
j_encoder_class,
GetStaticMethodID(jni, j_encoder_class, "isVp8HwSupported", "()Z"));
CHECK_EXCEPTION(jni);
if (is_vp8_hw_supported) {
ALOGD << "VP8 HW Encoder supported.";
supported_codecs_.push_back(VideoCodec(kVideoCodecVP8, "VP8",
MAX_VIDEO_WIDTH, MAX_VIDEO_HEIGHT, MAX_VIDEO_FPS));
}
bool is_vp9_hw_supported = jni->CallStaticBooleanMethod(
j_encoder_class,
GetStaticMethodID(jni, j_encoder_class, "isVp9HwSupported", "()Z"));
CHECK_EXCEPTION(jni);
if (is_vp9_hw_supported) {
ALOGD << "VP9 HW Encoder supported.";
supported_codecs_.push_back(VideoCodec(kVideoCodecVP9, "VP9",
MAX_VIDEO_WIDTH, MAX_VIDEO_HEIGHT, MAX_VIDEO_FPS));
}
bool is_h264_hw_supported = jni->CallStaticBooleanMethod(
j_encoder_class,
GetStaticMethodID(jni, j_encoder_class, "isH264HwSupported", "()Z"));
CHECK_EXCEPTION(jni);
if (is_h264_hw_supported) {
ALOGD << "H.264 HW Encoder supported.";
supported_codecs_.push_back(VideoCodec(kVideoCodecH264, "H264",
MAX_VIDEO_WIDTH, MAX_VIDEO_HEIGHT, MAX_VIDEO_FPS));
}
}
MediaCodecVideoEncoderFactory::~MediaCodecVideoEncoderFactory() {
ALOGD << "MediaCodecVideoEncoderFactory dtor";
if (egl_context_) {
JNIEnv* jni = AttachCurrentThreadIfNeeded();
jni->DeleteGlobalRef(egl_context_);
}
}
void MediaCodecVideoEncoderFactory::SetEGLContext(
JNIEnv* jni, jobject egl_context) {
ALOGD << "MediaCodecVideoEncoderFactory::SetEGLContext";
if (egl_context_) {
jni->DeleteGlobalRef(egl_context_);
egl_context_ = nullptr;
}
egl_context_ = jni->NewGlobalRef(egl_context);
if (CheckException(jni)) {
ALOGE << "error calling NewGlobalRef for EGL Context.";
}
}
webrtc::VideoEncoder* MediaCodecVideoEncoderFactory::CreateVideoEncoder(
VideoCodecType type) {
if (supported_codecs_.empty()) {
ALOGW << "No HW video encoder for type " << (int)type;
return nullptr;
}
for (std::vector<VideoCodec>::const_iterator it = supported_codecs_.begin();
it != supported_codecs_.end(); ++it) {
if (it->type == type) {
ALOGD << "Create HW video encoder for type " << (int)type <<
" (" << it->name << ").";
return new MediaCodecVideoEncoder(AttachCurrentThreadIfNeeded(), type,
egl_context_);
}
}
ALOGW << "Can not find HW video encoder for type " << (int)type;
return nullptr;
}
const std::vector<MediaCodecVideoEncoderFactory::VideoCodec>&
MediaCodecVideoEncoderFactory::codecs() const {
return supported_codecs_;
}
void MediaCodecVideoEncoderFactory::DestroyVideoEncoder(
webrtc::VideoEncoder* encoder) {
ALOGD << "Destroy video encoder.";
delete encoder;
}
} // namespace webrtc_jni