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61b4d518af7c2e4156056931d3512a49032b827d
platform-external-webrtc/talk/app/webrtc/java/jni/androidmediaencoder_jni.cc
jackychen 61b4d518af Dynamic resolution change for VP8 HW encode. 
Off by default for now.

BUG=
R=glaznev@webrtc.org, stefan@webrtc.org
TBR=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/45849004

Cr-Commit-Position: refs/heads/master@{#9045}
2015-04-21 22:29:53 +00:00

936 lines
35 KiB
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/*
* libjingle
* Copyright 2015 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "talk/app/webrtc/java/jni/androidmediaencoder_jni.h"
#include "talk/app/webrtc/java/jni/classreferenceholder.h"
#include "talk/app/webrtc/java/jni/androidmediacodeccommon.h"
#include "webrtc/base/bind.h"
#include "webrtc/base/checks.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/thread.h"
#include "webrtc/modules/video_coding/codecs/interface/video_codec_interface.h"
#include "webrtc/modules/video_coding/utility/include/quality_scaler.h"
#include "webrtc/system_wrappers/interface/logcat_trace_context.h"
#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"
using rtc::Bind;
using rtc::Thread;
using rtc::ThreadManager;
using rtc::scoped_ptr;
using webrtc::CodecSpecificInfo;
using webrtc::EncodedImage;
using webrtc::I420VideoFrame;
using webrtc::RTPFragmentationHeader;
using webrtc::VideoCodec;
using webrtc::VideoCodecType;
using webrtc::kVideoCodecH264;
using webrtc::kVideoCodecVP8;
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
// 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();
explicit MediaCodecVideoEncoder(JNIEnv* jni, VideoCodecType codecType);
// 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::I420VideoFrame& input_image,
const webrtc::CodecSpecificInfo* /* codec_specific_info */,
const std::vector<webrtc::VideoFrameType>* 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;
private:
// CHECK-fail if not running on |codec_thread_|.
void CheckOnCodecThread();
// Release() and InitEncode() in an attempt to restore the codec to an
// operable state. Necessary after all manner of OMX-layer errors.
void ResetCodec();
// 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);
int32_t EncodeOnCodecThread(
const webrtc::I420VideoFrame& input_image,
const std::vector<webrtc::VideoFrameType>* frame_types);
int32_t RegisterEncodeCompleteCallbackOnCodecThread(
webrtc::EncodedImageCallback* callback);
int32_t ReleaseOnCodecThread();
int32_t SetRatesOnCodecThread(uint32_t new_bit_rate, uint32_t frame_rate);
// 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);
// 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.
scoped_ptr<Thread> codec_thread_; // Thread on which to operate MediaCodec.
ScopedGlobalRef<jclass> j_media_codec_video_encoder_class_;
ScopedGlobalRef<jobject> j_media_codec_video_encoder_;
jmethodID j_init_encode_method_;
jmethodID j_dequeue_input_buffer_method_;
jmethodID j_encode_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_;
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_; // Number of frames dropped by encoder.
int frames_in_queue_; // Number of frames in encoder queue.
int64_t 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_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.
std::vector<int32_t> timestamps_; // Video frames timestamp queue.
std::vector<int64_t> render_times_ms_; // Video frames render time queue.
std::vector<int64_t> frame_rtc_times_ms_; // Time when video frame is sent to
// encoder input.
int32_t output_timestamp_; // Last output frame timestamp from timestamps_ Q.
int64_t output_render_time_ms_; // Last output frame render time from
// render_times_ms_ queue.
// 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_;
scoped_ptr<webrtc::QualityScaler> quality_scaler_;
// Target frame size in bytes.
int target_framesize_;
// Dynamic resolution change, off by default.
bool scale_;
};
MediaCodecVideoEncoder::~MediaCodecVideoEncoder() {
// Call Release() to ensure no more callbacks to us after we are deleted.
Release();
}
MediaCodecVideoEncoder::MediaCodecVideoEncoder(
JNIEnv* jni, VideoCodecType codecType) :
codecType_(codecType),
callback_(NULL),
inited_(false),
picture_id_(0),
codec_thread_(new Thread()),
quality_scaler_(new webrtc::QualityScaler()),
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"))) {
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);
CHECK(codec_thread_->Start()) << "Failed to start MediaCodecVideoEncoder";
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$VideoCodecType;IIII)"
"[Ljava/nio/ByteBuffer;");
j_dequeue_input_buffer_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "dequeueInputBuffer", "()I");
j_encode_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "encode", "(ZIIJ)Z");
j_release_method_ =
GetMethodID(jni, *j_media_codec_video_encoder_class_, "release", "()V");
j_set_rates_method_ = GetMethodID(
jni, *j_media_codec_video_encoder_class_, "setRates", "(II)Z");
j_dequeue_output_buffer_method_ = GetMethodID(
jni,
*j_media_codec_video_encoder_class_,
"dequeueOutputBuffer",
"()Lorg/webrtc/MediaCodecVideoEncoder$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";
AllowBlockingCalls();
}
int32_t MediaCodecVideoEncoder::InitEncode(
const webrtc::VideoCodec* codec_settings,
int32_t /* number_of_cores */,
size_t /* max_payload_size */) {
const int kMinWidth = 320;
const int kMinHeight = 180;
if (codec_settings == NULL) {
ALOGE("NULL VideoCodec instance");
return WEBRTC_VIDEO_CODEC_ERR_PARAMETER;
}
// Factory should guard against other codecs being used with us.
CHECK(codec_settings->codecType == codecType_) << "Unsupported codec " <<
codec_settings->codecType << " for " << codecType_;
ALOGD("InitEncode request");
scale_ = false;
quality_scaler_->Init(0);
quality_scaler_->SetMinResolution(kMinWidth, kMinHeight);
quality_scaler_->ReportFramerate(codec_settings->maxFramerate);
if (codec_settings->maxFramerate > 0) {
target_framesize_ = codec_settings->startBitrate * 1000 /
codec_settings->maxFramerate / 8;
} else {
target_framesize_ = 0;
}
return codec_thread_->Invoke<int32_t>(
Bind(&MediaCodecVideoEncoder::InitEncodeOnCodecThread,
this,
codec_settings->width,
codec_settings->height,
codec_settings->startBitrate,
codec_settings->maxFramerate));
}
int32_t MediaCodecVideoEncoder::Encode(
const webrtc::I420VideoFrame& frame,
const webrtc::CodecSpecificInfo* /* codec_specific_info */,
const std::vector<webrtc::VideoFrameType>* frame_types) {
return codec_thread_->Invoke<int32_t>(Bind(
&MediaCodecVideoEncoder::EncodeOnCodecThread, this, frame, frame_types));
}
int32_t MediaCodecVideoEncoder::RegisterEncodeCompleteCallback(
webrtc::EncodedImageCallback* callback) {
return codec_thread_->Invoke<int32_t>(
Bind(&MediaCodecVideoEncoder::RegisterEncodeCompleteCallbackOnCodecThread,
this,
callback));
}
int32_t MediaCodecVideoEncoder::Release() {
ALOGD("EncoderRelease request");
return codec_thread_->Invoke<int32_t>(
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) {
quality_scaler_->ReportFramerate(frame_rate);
if (frame_rate > 0) {
target_framesize_ = new_bit_rate * 1000 / frame_rate / 8;
} else {
target_framesize_ = 0;
}
return codec_thread_->Invoke<int32_t>(
Bind(&MediaCodecVideoEncoder::SetRatesOnCodecThread,
this,
new_bit_rate,
frame_rate));
}
void MediaCodecVideoEncoder::OnMessage(rtc::Message* msg) {
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.
CHECK(!msg->message_id) << "Unexpected message!";
CHECK(!msg->pdata) << "Unexpected message!";
CheckOnCodecThread();
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);
codec_thread_->PostDelayed(kMediaCodecPollMs, this);
}
void MediaCodecVideoEncoder::CheckOnCodecThread() {
CHECK(codec_thread_ == ThreadManager::Instance()->CurrentThread())
<< "Running on wrong thread!";
}
void MediaCodecVideoEncoder::ResetCodec() {
ALOGE("ResetCodec");
if (Release() != WEBRTC_VIDEO_CODEC_OK ||
codec_thread_->Invoke<int32_t>(Bind(
&MediaCodecVideoEncoder::InitEncodeOnCodecThread, this,
width_, height_, 0, 0)) != 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
}
}
int32_t MediaCodecVideoEncoder::InitEncodeOnCodecThread(
int width, int height, int kbps, int fps) {
CheckOnCodecThread();
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
ALOGD("InitEncodeOnCodecThread Type: %d. %d x %d. Bitrate: %d kbps. Fps: %d",
(int)codecType_, width, height, kbps, fps);
if (kbps == 0) {
kbps = last_set_bitrate_kbps_;
}
if (fps == 0) {
fps = last_set_fps_;
}
width_ = width;
height_ = height;
last_set_bitrate_kbps_ = kbps;
last_set_fps_ = fps;
yuv_size_ = width_ * height_ * 3 / 2;
frames_received_ = 0;
frames_encoded_ = 0;
frames_dropped_ = 0;
frames_in_queue_ = 0;
current_timestamp_us_ = 0;
start_time_ms_ = GetCurrentTimeMs();
current_frames_ = 0;
current_bytes_ = 0;
current_encoding_time_ms_ = 0;
last_input_timestamp_ms_ = -1;
last_output_timestamp_ms_ = -1;
output_timestamp_ = 0;
output_render_time_ms_ = 0;
timestamps_.clear();
render_times_ms_.clear();
frame_rtc_times_ms_.clear();
drop_next_input_frame_ = false;
picture_id_ = static_cast<uint16_t>(rand()) & 0x7FFF;
// We enforce no extra stride/padding in the format creation step.
jobject j_video_codec_enum = JavaEnumFromIndex(
jni, "MediaCodecVideoEncoder$VideoCodecType", codecType_);
jobjectArray input_buffers = reinterpret_cast<jobjectArray>(
jni->CallObjectMethod(*j_media_codec_video_encoder_,
j_init_encode_method_,
j_video_codec_enum,
width_,
height_,
kbps,
fps));
CHECK_EXCEPTION(jni);
if (IsNull(jni, input_buffers)) {
return WEBRTC_VIDEO_CODEC_ERROR;
}
inited_ = true;
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);
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 yuv_buffer_capacity =
jni->GetDirectBufferCapacity(input_buffers_[i]);
CHECK_EXCEPTION(jni);
CHECK(yuv_buffer_capacity >= yuv_size_) << "Insufficient capacity";
}
CHECK_EXCEPTION(jni);
codec_thread_->PostDelayed(kMediaCodecPollMs, this);
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::EncodeOnCodecThread(
const webrtc::I420VideoFrame& frame,
const std::vector<webrtc::VideoFrameType>* frame_types) {
CheckOnCodecThread();
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
if (!inited_) {
return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
}
frames_received_++;
if (!DeliverPendingOutputs(jni)) {
ResetCodec();
// Continue as if everything's fine.
}
if (drop_next_input_frame_) {
ALOGV("Encoder drop frame - failed callback.");
drop_next_input_frame_ = false;
return WEBRTC_VIDEO_CODEC_OK;
}
CHECK(frame_types->size() == 1) << "Unexpected stream count";
const I420VideoFrame& input_frame =
(scale_ && codecType_ == kVideoCodecVP8) ?
quality_scaler_->GetScaledFrame(frame) : frame;
if (input_frame.width() != width_ || input_frame.height() != height_) {
ALOGD("Frame resolution change from %d x %d to %d x %d",
width_, height_, input_frame.width(), input_frame.height());
width_ = input_frame.width();
height_ = input_frame.height();
ResetCodec();
return WEBRTC_VIDEO_CODEC_OK;
}
bool key_frame = frame_types->front() != webrtc::kDeltaFrame;
// Check if we accumulated too many frames in encoder input buffers
// or the encoder latency exceeds 70 ms and drop frame if so.
if (frames_in_queue_ > 0 && last_input_timestamp_ms_ >= 0) {
int encoder_latency_ms = last_input_timestamp_ms_ -
last_output_timestamp_ms_;
if (frames_in_queue_ > 2 || encoder_latency_ms > 70) {
ALOGD("Drop frame - encoder is behind by %d ms. Q size: %d",
encoder_latency_ms, frames_in_queue_);
frames_dropped_++;
// Report dropped frame to quality_scaler_.
OnDroppedFrame();
return WEBRTC_VIDEO_CODEC_OK;
}
}
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.
ALOGV("Encoder drop frame - no input buffers available");
frames_dropped_++;
// Report dropped frame to quality_scaler_.
OnDroppedFrame();
return WEBRTC_VIDEO_CODEC_OK; // TODO(fischman): see webrtc bug 2887.
}
if (j_input_buffer_index == -2) {
ResetCodec();
return WEBRTC_VIDEO_CODEC_ERROR;
}
ALOGV("Encoder frame in # %d. TS: %lld. Q: %d",
frames_received_ - 1, current_timestamp_us_ / 1000, frames_in_queue_);
jobject j_input_buffer = input_buffers_[j_input_buffer_index];
uint8* yuv_buffer =
reinterpret_cast<uint8*>(jni->GetDirectBufferAddress(j_input_buffer));
CHECK_EXCEPTION(jni);
CHECK(yuv_buffer) << "Indirect buffer??";
CHECK(!libyuv::ConvertFromI420(
input_frame.buffer(webrtc::kYPlane),
input_frame.stride(webrtc::kYPlane),
input_frame.buffer(webrtc::kUPlane),
input_frame.stride(webrtc::kUPlane),
input_frame.buffer(webrtc::kVPlane),
input_frame.stride(webrtc::kVPlane),
yuv_buffer, width_,
width_, height_,
encoder_fourcc_))
<< "ConvertFromI420 failed";
last_input_timestamp_ms_ = current_timestamp_us_ / 1000;
frames_in_queue_++;
// Save input image timestamps for later output
timestamps_.push_back(input_frame.timestamp());
render_times_ms_.push_back(input_frame.render_time_ms());
frame_rtc_times_ms_.push_back(GetCurrentTimeMs());
bool encode_status = jni->CallBooleanMethod(*j_media_codec_video_encoder_,
j_encode_method_,
key_frame,
j_input_buffer_index,
yuv_size_,
current_timestamp_us_);
CHECK_EXCEPTION(jni);
current_timestamp_us_ += 1000000 / last_set_fps_;
if (!encode_status || !DeliverPendingOutputs(jni)) {
ResetCodec();
return WEBRTC_VIDEO_CODEC_ERROR;
}
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::RegisterEncodeCompleteCallbackOnCodecThread(
webrtc::EncodedImageCallback* callback) {
CheckOnCodecThread();
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ScopedLocalRefFrame local_ref_frame(jni);
callback_ = callback;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::ReleaseOnCodecThread() {
if (!inited_) {
return WEBRTC_VIDEO_CODEC_OK;
}
CheckOnCodecThread();
JNIEnv* jni = AttachCurrentThreadIfNeeded();
ALOGD("EncoderReleaseOnCodecThread: Frames received: %d. Encoded: %d. "
"Dropped: %d.", frames_received_, frames_encoded_, frames_dropped_);
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;
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t MediaCodecVideoEncoder::SetRatesOnCodecThread(uint32_t new_bit_rate,
uint32_t frame_rate) {
CheckOnCodecThread();
if (last_set_bitrate_kbps_ == new_bit_rate &&
last_set_fps_ == frame_rate) {
return WEBRTC_VIDEO_CODEC_OK;
}
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) {
ResetCodec();
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) {
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) {
ResetCodec();
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 frame_encoding_time_ms = 0;
last_output_timestamp_ms_ =
GetOutputBufferInfoPresentationTimestampUs(jni, j_output_buffer_info) /
1000;
if (frames_in_queue_ > 0) {
output_timestamp_ = timestamps_.front();
timestamps_.erase(timestamps_.begin());
output_render_time_ms_ = render_times_ms_.front();
render_times_ms_.erase(render_times_ms_.begin());
frame_encoding_time_ms = GetCurrentTimeMs() - frame_rtc_times_ms_.front();
frame_rtc_times_ms_.erase(frame_rtc_times_ms_.begin());
frames_in_queue_--;
}
// Extract payload.
size_t payload_size = jni->GetDirectBufferCapacity(j_output_buffer);
uint8* payload = reinterpret_cast<uint8_t*>(
jni->GetDirectBufferAddress(j_output_buffer));
CHECK_EXCEPTION(jni);
ALOGV("Encoder frame out # %d. Key: %d. Size: %d. TS: %lld."
" Latency: %lld. EncTime: %lld",
frames_encoded_, key_frame, payload_size,
last_output_timestamp_ms_,
last_input_timestamp_ms_ - last_output_timestamp_ms_,
frame_encoding_time_ms);
if (payload_size) {
double framesize_deviation = 0.0;
if (target_framesize_ > 0) {
framesize_deviation =
(double)abs((int)payload_size - target_framesize_) /
target_framesize_;
}
quality_scaler_->ReportNormalizedFrameSizeFluctuation(
framesize_deviation);
}
// Calculate and print encoding statistics - every 3 seconds.
frames_encoded_++;
current_frames_++;
current_bytes_ += payload_size;
current_encoding_time_ms_ += frame_encoding_time_ms;
int statistic_time_ms = GetCurrentTimeMs() - start_time_ms_;
if (statistic_time_ms >= kMediaCodecStatisticsIntervalMs &&
current_frames_ > 0) {
ALOGD("Encoder bitrate: %d, target: %d kbps, fps: %d,"
" encTime: %d for last %d ms",
current_bytes_ * 8 / statistic_time_ms,
last_set_bitrate_kbps_,
(current_frames_ * 1000 + statistic_time_ms / 2) / statistic_time_ms,
current_encoding_time_ms_ / current_frames_, statistic_time_ms);
start_time_ms_ = GetCurrentTimeMs();
current_frames_ = 0;
current_bytes_ = 0;
current_encoding_time_ms_ = 0;
}
// Callback - return encoded frame.
int32_t callback_status = 0;
if (callback_) {
scoped_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->_frameType = (key_frame ? webrtc::kKeyFrame : webrtc::kDeltaFrame);
image->_completeFrame = true;
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;
picture_id_ = (picture_id_ + 1) & 0x7FFF;
}
// Generate a header describing a single fragment.
webrtc::RTPFragmentationHeader header;
memset(&header, 0, sizeof(header));
if (codecType_ == kVideoCodecVP8) {
header.VerifyAndAllocateFragmentationHeader(1);
header.fragmentationOffset[0] = 0;
header.fragmentationLength[0] = image->_length;
header.fragmentationPlType[0] = 0;
header.fragmentationTimeDiff[0] = 0;
} else if (codecType_ == kVideoCodecH264) {
// 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 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x",
image->_buffer[0], image->_buffer[1], image->_buffer[2],
image->_buffer[3], image->_buffer[4], image->_buffer[5]);
ResetCodec();
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) {
ResetCodec();
return 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;
}
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() {
quality_scaler_->ReportDroppedFrame();
}
MediaCodecVideoEncoderFactory::MediaCodecVideoEncoderFactory() {
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_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() {}
webrtc::VideoEncoder* MediaCodecVideoEncoderFactory::CreateVideoEncoder(
VideoCodecType type) {
if (supported_codecs_.empty()) {
return NULL;
}
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 %d (%s).",
(int)type, it->name.c_str());
return new MediaCodecVideoEncoder(AttachCurrentThreadIfNeeded(), type);
}
}
return NULL;
}
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
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