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)
This commit is contained in:
zhupengfei 2019-01-26 22:19:36 +08:00
parent 2f0ea48da4
commit 3f64aaabbd
No known key found for this signature in database
GPG key ID: DD129E108BD09378
3 changed files with 87 additions and 0 deletions

View file

@ -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

View file

@ -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

View file

@ -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