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core: Add video dumper interface

The VideoFrame is rotated while copying, to put the pixels in their correct positions (OpenGL seems to return the image in reverted order by default)
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zhupengfei 2019-01-26 22:19:36 +08:00
parent 2f0ea48da4
commit 3f64aaabbd
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3 changed files with 87 additions and 0 deletions

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@ -36,6 +36,8 @@ add_library(core STATIC
core.h
core_timing.cpp
core_timing.h
dumping/backend.cpp
dumping/backend.h
file_sys/archive_backend.cpp
file_sys/archive_backend.h
file_sys/archive_extsavedata.cpp

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@ -0,0 +1,26 @@
// Copyright 2018 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstring>
#include "core/dumping/backend.h"
namespace VideoDumper {
VideoFrame::VideoFrame(std::size_t width_, std::size_t height_, u8* data_)
: width(width_), height(height_), stride(width * 4), data(width * height * 4) {
// While copying, rotate the image to put the pixels in correct order
// (As OpenGL returns pixel data starting from the lowest position)
for (std::size_t i = 0; i < height; i++) {
for (std::size_t j = 0; j < width; j++) {
for (std::size_t k = 0; k < 4; k++) {
data[i * stride + j * 4 + k] = data_[(height - i - 1) * stride + j * 4 + k];
}
}
}
}
Backend::~Backend() = default;
NullBackend::~NullBackend() = default;
} // namespace VideoDumper

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@ -0,0 +1,59 @@
// Copyright 2018 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <string>
#include <vector>
#include "audio_core/audio_types.h"
#include "common/common_types.h"
#include "core/frontend/framebuffer_layout.h"
namespace VideoDumper {
/**
* Frame dump data for a single screen
* data is in RGB888 format, left to right then top to bottom
*/
class VideoFrame {
public:
std::size_t width;
std::size_t height;
u32 stride;
std::vector<u8> data;
VideoFrame(std::size_t width_ = 0, std::size_t height_ = 0, u8* data_ = nullptr);
};
class Backend {
public:
virtual ~Backend();
virtual bool StartDumping(const std::string& path, const std::string& format,
const Layout::FramebufferLayout& layout) = 0;
virtual void AddVideoFrame(const VideoFrame& frame) = 0;
virtual void AddAudioFrame(const AudioCore::StereoFrame16& frame) = 0;
virtual void AddAudioSample(const std::array<s16, 2>& sample) = 0;
virtual void StopDumping() = 0;
virtual bool IsDumping() const = 0;
virtual Layout::FramebufferLayout GetLayout() const = 0;
};
class NullBackend : public Backend {
public:
~NullBackend() override;
bool StartDumping(const std::string& /*path*/, const std::string& /*format*/,
const Layout::FramebufferLayout& /*layout*/) override {
return false;
}
void AddVideoFrame(const VideoFrame& /*frame*/) override {}
void AddAudioFrame(const AudioCore::StereoFrame16& /*frame*/) override {}
void AddAudioSample(const std::array<s16, 2>& /*sample*/) override {}
void StopDumping() override {}
bool IsDumping() const override {
return false;
}
Layout::FramebufferLayout GetLayout() const override {
return Layout::FramebufferLayout{};
}
};
} // namespace VideoDumper