| /* |
| * Copyright (c) 2013 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 "test/frame_generator.h" |
| |
| #include <string.h> |
| |
| #include <cstdint> |
| #include <cstdio> |
| #include <memory> |
| |
| #include "api/video/i010_buffer.h" |
| #include "api/video/video_rotation.h" |
| #include "common_video/include/video_frame_buffer.h" |
| #include "common_video/libyuv/include/webrtc_libyuv.h" |
| #include "rtc_base/bind.h" |
| #include "rtc_base/checks.h" |
| #include "rtc_base/keep_ref_until_done.h" |
| #include "test/frame_utils.h" |
| |
| namespace webrtc { |
| namespace test { |
| namespace { |
| |
| // Helper method for keeping a reference to passed pointers. |
| void KeepBufferRefs(rtc::scoped_refptr<webrtc::VideoFrameBuffer>, |
| rtc::scoped_refptr<webrtc::VideoFrameBuffer>) {} |
| |
| } // namespace |
| |
| SquareGenerator::SquareGenerator(int width, |
| int height, |
| OutputType type, |
| int num_squares) |
| : type_(type) { |
| ChangeResolution(width, height); |
| for (int i = 0; i < num_squares; ++i) { |
| squares_.emplace_back(new Square(width, height, i + 1)); |
| } |
| } |
| |
| void SquareGenerator::ChangeResolution(size_t width, size_t height) { |
| rtc::CritScope lock(&crit_); |
| width_ = static_cast<int>(width); |
| height_ = static_cast<int>(height); |
| RTC_CHECK(width_ > 0); |
| RTC_CHECK(height_ > 0); |
| } |
| |
| rtc::scoped_refptr<I420Buffer> SquareGenerator::CreateI420Buffer(int width, |
| int height) { |
| rtc::scoped_refptr<I420Buffer> buffer(I420Buffer::Create(width, height)); |
| memset(buffer->MutableDataY(), 127, height * buffer->StrideY()); |
| memset(buffer->MutableDataU(), 127, |
| buffer->ChromaHeight() * buffer->StrideU()); |
| memset(buffer->MutableDataV(), 127, |
| buffer->ChromaHeight() * buffer->StrideV()); |
| return buffer; |
| } |
| |
| FrameGeneratorInterface::VideoFrameData SquareGenerator::NextFrame() { |
| rtc::CritScope lock(&crit_); |
| |
| rtc::scoped_refptr<VideoFrameBuffer> buffer = nullptr; |
| switch (type_) { |
| case OutputType::kI420: |
| case OutputType::kI010: { |
| buffer = CreateI420Buffer(width_, height_); |
| break; |
| } |
| case OutputType::kI420A: { |
| rtc::scoped_refptr<I420Buffer> yuv_buffer = |
| CreateI420Buffer(width_, height_); |
| rtc::scoped_refptr<I420Buffer> axx_buffer = |
| CreateI420Buffer(width_, height_); |
| buffer = WrapI420ABuffer( |
| yuv_buffer->width(), yuv_buffer->height(), yuv_buffer->DataY(), |
| yuv_buffer->StrideY(), yuv_buffer->DataU(), yuv_buffer->StrideU(), |
| yuv_buffer->DataV(), yuv_buffer->StrideV(), axx_buffer->DataY(), |
| axx_buffer->StrideY(), |
| rtc::Bind(&KeepBufferRefs, yuv_buffer, axx_buffer)); |
| break; |
| } |
| default: |
| RTC_NOTREACHED() << "The given output format is not supported."; |
| } |
| |
| for (const auto& square : squares_) |
| square->Draw(buffer); |
| |
| if (type_ == OutputType::kI010) { |
| buffer = I010Buffer::Copy(*buffer->ToI420()); |
| } |
| |
| return VideoFrameData(buffer, absl::nullopt); |
| } |
| |
| SquareGenerator::Square::Square(int width, int height, int seed) |
| : random_generator_(seed), |
| x_(random_generator_.Rand(0, width)), |
| y_(random_generator_.Rand(0, height)), |
| length_(random_generator_.Rand(1, width > 4 ? width / 4 : 1)), |
| yuv_y_(random_generator_.Rand(0, 255)), |
| yuv_u_(random_generator_.Rand(0, 255)), |
| yuv_v_(random_generator_.Rand(0, 255)), |
| yuv_a_(random_generator_.Rand(0, 255)) {} |
| |
| void SquareGenerator::Square::Draw( |
| const rtc::scoped_refptr<VideoFrameBuffer>& frame_buffer) { |
| RTC_DCHECK(frame_buffer->type() == VideoFrameBuffer::Type::kI420 || |
| frame_buffer->type() == VideoFrameBuffer::Type::kI420A); |
| rtc::scoped_refptr<I420BufferInterface> buffer = frame_buffer->ToI420(); |
| int length_cap = std::min(buffer->height(), buffer->width()) / 4; |
| int length = std::min(length_, length_cap); |
| x_ = (x_ + random_generator_.Rand(0, 4)) % (buffer->width() - length); |
| y_ = (y_ + random_generator_.Rand(0, 4)) % (buffer->height() - length); |
| for (int y = y_; y < y_ + length; ++y) { |
| uint8_t* pos_y = |
| (const_cast<uint8_t*>(buffer->DataY()) + x_ + y * buffer->StrideY()); |
| memset(pos_y, yuv_y_, length); |
| } |
| |
| for (int y = y_; y < y_ + length; y = y + 2) { |
| uint8_t* pos_u = (const_cast<uint8_t*>(buffer->DataU()) + x_ / 2 + |
| y / 2 * buffer->StrideU()); |
| memset(pos_u, yuv_u_, length / 2); |
| uint8_t* pos_v = (const_cast<uint8_t*>(buffer->DataV()) + x_ / 2 + |
| y / 2 * buffer->StrideV()); |
| memset(pos_v, yuv_v_, length / 2); |
| } |
| |
| if (frame_buffer->type() == VideoFrameBuffer::Type::kI420) |
| return; |
| |
| // Optionally draw on alpha plane if given. |
| const webrtc::I420ABufferInterface* yuva_buffer = frame_buffer->GetI420A(); |
| for (int y = y_; y < y_ + length; ++y) { |
| uint8_t* pos_y = (const_cast<uint8_t*>(yuva_buffer->DataA()) + x_ + |
| y * yuva_buffer->StrideA()); |
| memset(pos_y, yuv_a_, length); |
| } |
| } |
| |
| YuvFileGenerator::YuvFileGenerator(std::vector<FILE*> files, |
| size_t width, |
| size_t height, |
| int frame_repeat_count) |
| : file_index_(0), |
| frame_index_(std::numeric_limits<size_t>::max()), |
| files_(files), |
| width_(width), |
| height_(height), |
| frame_size_(CalcBufferSize(VideoType::kI420, |
| static_cast<int>(width_), |
| static_cast<int>(height_))), |
| frame_buffer_(new uint8_t[frame_size_]), |
| frame_display_count_(frame_repeat_count), |
| current_display_count_(0) { |
| RTC_DCHECK_GT(width, 0); |
| RTC_DCHECK_GT(height, 0); |
| RTC_DCHECK_GT(frame_repeat_count, 0); |
| } |
| |
| YuvFileGenerator::~YuvFileGenerator() { |
| for (FILE* file : files_) |
| fclose(file); |
| } |
| |
| FrameGeneratorInterface::VideoFrameData YuvFileGenerator::NextFrame() { |
| // Empty update by default. |
| VideoFrame::UpdateRect update_rect{0, 0, 0, 0}; |
| if (current_display_count_ == 0) { |
| const bool got_new_frame = ReadNextFrame(); |
| // Full update on a new frame from file. |
| if (got_new_frame) { |
| update_rect = VideoFrame::UpdateRect{0, 0, static_cast<int>(width_), |
| static_cast<int>(height_)}; |
| } |
| } |
| if (++current_display_count_ >= frame_display_count_) |
| current_display_count_ = 0; |
| |
| return VideoFrameData(last_read_buffer_, update_rect); |
| } |
| |
| bool YuvFileGenerator::ReadNextFrame() { |
| size_t prev_frame_index = frame_index_; |
| size_t prev_file_index = file_index_; |
| last_read_buffer_ = test::ReadI420Buffer( |
| static_cast<int>(width_), static_cast<int>(height_), files_[file_index_]); |
| ++frame_index_; |
| if (!last_read_buffer_) { |
| // No more frames to read in this file, rewind and move to next file. |
| rewind(files_[file_index_]); |
| |
| frame_index_ = 0; |
| file_index_ = (file_index_ + 1) % files_.size(); |
| last_read_buffer_ = |
| test::ReadI420Buffer(static_cast<int>(width_), |
| static_cast<int>(height_), files_[file_index_]); |
| RTC_CHECK(last_read_buffer_); |
| } |
| return frame_index_ != prev_frame_index || file_index_ != prev_file_index; |
| } |
| |
| SlideGenerator::SlideGenerator(int width, int height, int frame_repeat_count) |
| : width_(width), |
| height_(height), |
| frame_display_count_(frame_repeat_count), |
| current_display_count_(0), |
| random_generator_(1234) { |
| RTC_DCHECK_GT(width, 0); |
| RTC_DCHECK_GT(height, 0); |
| RTC_DCHECK_GT(frame_repeat_count, 0); |
| } |
| |
| FrameGeneratorInterface::VideoFrameData SlideGenerator::NextFrame() { |
| if (current_display_count_ == 0) |
| GenerateNewFrame(); |
| if (++current_display_count_ >= frame_display_count_) |
| current_display_count_ = 0; |
| |
| return VideoFrameData(buffer_, absl::nullopt); |
| } |
| |
| void SlideGenerator::GenerateNewFrame() { |
| // The squares should have a varying order of magnitude in order |
| // to simulate variation in the slides' complexity. |
| const int kSquareNum = 1 << (4 + (random_generator_.Rand(0, 3) * 2)); |
| |
| buffer_ = I420Buffer::Create(width_, height_); |
| memset(buffer_->MutableDataY(), 127, height_ * buffer_->StrideY()); |
| memset(buffer_->MutableDataU(), 127, |
| buffer_->ChromaHeight() * buffer_->StrideU()); |
| memset(buffer_->MutableDataV(), 127, |
| buffer_->ChromaHeight() * buffer_->StrideV()); |
| |
| for (int i = 0; i < kSquareNum; ++i) { |
| int length = random_generator_.Rand(1, width_ > 4 ? width_ / 4 : 1); |
| // Limit the length of later squares so that they don't overwrite the |
| // previous ones too much. |
| length = (length * (kSquareNum - i)) / kSquareNum; |
| |
| int x = random_generator_.Rand(0, width_ - length); |
| int y = random_generator_.Rand(0, height_ - length); |
| uint8_t yuv_y = random_generator_.Rand(0, 255); |
| uint8_t yuv_u = random_generator_.Rand(0, 255); |
| uint8_t yuv_v = random_generator_.Rand(0, 255); |
| |
| for (int yy = y; yy < y + length; ++yy) { |
| uint8_t* pos_y = (buffer_->MutableDataY() + x + yy * buffer_->StrideY()); |
| memset(pos_y, yuv_y, length); |
| } |
| for (int yy = y; yy < y + length; yy += 2) { |
| uint8_t* pos_u = |
| (buffer_->MutableDataU() + x / 2 + yy / 2 * buffer_->StrideU()); |
| memset(pos_u, yuv_u, length / 2); |
| uint8_t* pos_v = |
| (buffer_->MutableDataV() + x / 2 + yy / 2 * buffer_->StrideV()); |
| memset(pos_v, yuv_v, length / 2); |
| } |
| } |
| } |
| |
| ScrollingImageFrameGenerator::ScrollingImageFrameGenerator( |
| Clock* clock, |
| const std::vector<FILE*>& files, |
| size_t source_width, |
| size_t source_height, |
| size_t target_width, |
| size_t target_height, |
| int64_t scroll_time_ms, |
| int64_t pause_time_ms) |
| : clock_(clock), |
| start_time_(clock->TimeInMilliseconds()), |
| scroll_time_(scroll_time_ms), |
| pause_time_(pause_time_ms), |
| num_frames_(files.size()), |
| target_width_(static_cast<int>(target_width)), |
| target_height_(static_cast<int>(target_height)), |
| current_frame_num_(num_frames_ - 1), |
| prev_frame_not_scrolled_(false), |
| current_source_frame_(nullptr, absl::nullopt), |
| current_frame_(nullptr, absl::nullopt), |
| file_generator_(files, source_width, source_height, 1) { |
| RTC_DCHECK(clock_ != nullptr); |
| RTC_DCHECK_GT(num_frames_, 0); |
| RTC_DCHECK_GE(source_height, target_height); |
| RTC_DCHECK_GE(source_width, target_width); |
| RTC_DCHECK_GE(scroll_time_ms, 0); |
| RTC_DCHECK_GE(pause_time_ms, 0); |
| RTC_DCHECK_GT(scroll_time_ms + pause_time_ms, 0); |
| } |
| |
| FrameGeneratorInterface::VideoFrameData |
| ScrollingImageFrameGenerator::NextFrame() { |
| const int64_t kFrameDisplayTime = scroll_time_ + pause_time_; |
| const int64_t now = clock_->TimeInMilliseconds(); |
| int64_t ms_since_start = now - start_time_; |
| |
| size_t frame_num = (ms_since_start / kFrameDisplayTime) % num_frames_; |
| UpdateSourceFrame(frame_num); |
| |
| bool cur_frame_not_scrolled; |
| |
| double scroll_factor; |
| int64_t time_into_frame = ms_since_start % kFrameDisplayTime; |
| if (time_into_frame < scroll_time_) { |
| scroll_factor = static_cast<double>(time_into_frame) / scroll_time_; |
| cur_frame_not_scrolled = false; |
| } else { |
| scroll_factor = 1.0; |
| cur_frame_not_scrolled = true; |
| } |
| CropSourceToScrolledImage(scroll_factor); |
| |
| bool same_scroll_position = |
| prev_frame_not_scrolled_ && cur_frame_not_scrolled; |
| if (!same_scroll_position) { |
| // If scrolling is not finished yet, force full frame update. |
| current_frame_.update_rect = |
| VideoFrame::UpdateRect{0, 0, target_width_, target_height_}; |
| } |
| prev_frame_not_scrolled_ = cur_frame_not_scrolled; |
| |
| return current_frame_; |
| } |
| |
| void ScrollingImageFrameGenerator::UpdateSourceFrame(size_t frame_num) { |
| VideoFrame::UpdateRect acc_update{0, 0, 0, 0}; |
| while (current_frame_num_ != frame_num) { |
| current_source_frame_ = file_generator_.NextFrame(); |
| if (current_source_frame_.update_rect) { |
| acc_update.Union(*current_source_frame_.update_rect); |
| } |
| current_frame_num_ = (current_frame_num_ + 1) % num_frames_; |
| } |
| current_source_frame_.update_rect = acc_update; |
| } |
| |
| void ScrollingImageFrameGenerator::CropSourceToScrolledImage( |
| double scroll_factor) { |
| int scroll_margin_x = current_source_frame_.buffer->width() - target_width_; |
| int pixels_scrolled_x = |
| static_cast<int>(scroll_margin_x * scroll_factor + 0.5); |
| int scroll_margin_y = current_source_frame_.buffer->height() - target_height_; |
| int pixels_scrolled_y = |
| static_cast<int>(scroll_margin_y * scroll_factor + 0.5); |
| |
| rtc::scoped_refptr<I420BufferInterface> i420_buffer = |
| current_source_frame_.buffer->ToI420(); |
| int offset_y = |
| (i420_buffer->StrideY() * pixels_scrolled_y) + pixels_scrolled_x; |
| int offset_u = (i420_buffer->StrideU() * (pixels_scrolled_y / 2)) + |
| (pixels_scrolled_x / 2); |
| int offset_v = (i420_buffer->StrideV() * (pixels_scrolled_y / 2)) + |
| (pixels_scrolled_x / 2); |
| |
| VideoFrame::UpdateRect update_rect = |
| current_source_frame_.update_rect->IsEmpty() |
| ? VideoFrame::UpdateRect{0, 0, 0, 0} |
| : VideoFrame::UpdateRect{0, 0, target_width_, target_height_}; |
| current_frame_ = VideoFrameData( |
| WrapI420Buffer(target_width_, target_height_, |
| &i420_buffer->DataY()[offset_y], i420_buffer->StrideY(), |
| &i420_buffer->DataU()[offset_u], i420_buffer->StrideU(), |
| &i420_buffer->DataV()[offset_v], i420_buffer->StrideV(), |
| KeepRefUntilDone(i420_buffer)), |
| update_rect); |
| } |
| |
| } // namespace test |
| } // namespace webrtc |
