9add0eb571
1. Reverts 4e96eb77e0 (PR #1789) to bring the C++ OpenGL GPU Pipeline back.
2. Fixes the "initHybrid JNI not found" error by loading the native JNI/C++ library in `VideoPipeline.kt`.
This PR has two downsides:
1. `pixelFormat="yuv"` does not work on Android. OpenGL only works in RGB
2. OpenGL rendering is fast, but it has an overhead. I think for Camera -> Video Recording we shouldn't be using an entire OpenGL rendering pipeline.
The original plan was to use something similar to how it works on iOS by just passing GPU buffers around, but the android.media APIs just aren't as advanced yet. `ImageReader`/`ImageWriter` is way too buggy and doesn't really work with `MediaRecorder`/`MediaCodec`.
This sucks, I hope in the future we can use something like `AHardwareBuffer`s.
75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
//
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// Created by Marc Rousavy on 29.08.23.
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//
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#include "OpenGLRenderer.h"
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#include <EGL/egl.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <android/log.h>
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#include <android/native_window.h>
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#include <utility>
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#include "OpenGLError.h"
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namespace vision {
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std::unique_ptr<OpenGLRenderer> OpenGLRenderer::CreateWithWindowSurface(std::shared_ptr<OpenGLContext> context, ANativeWindow* surface) {
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return std::unique_ptr<OpenGLRenderer>(new OpenGLRenderer(std::move(context), surface));
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}
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OpenGLRenderer::OpenGLRenderer(std::shared_ptr<OpenGLContext> context, ANativeWindow* surface) {
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_context = std::move(context);
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_outputSurface = surface;
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_width = ANativeWindow_getWidth(surface);
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_height = ANativeWindow_getHeight(surface);
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}
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OpenGLRenderer::~OpenGLRenderer() {
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if (_outputSurface != nullptr) {
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ANativeWindow_release(_outputSurface);
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}
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destroy();
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}
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void OpenGLRenderer::destroy() {
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if (_context != nullptr && _surface != EGL_NO_DISPLAY) {
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__android_log_print(ANDROID_LOG_INFO, TAG, "Destroying OpenGL Surface...");
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eglDestroySurface(_context->display, _surface);
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_surface = EGL_NO_SURFACE;
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}
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}
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void OpenGLRenderer::renderTextureToSurface(const OpenGLTexture& texture, float* transformMatrix) {
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if (_surface == EGL_NO_SURFACE) {
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__android_log_print(ANDROID_LOG_INFO, TAG, "Creating Window Surface...");
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_context->use();
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_surface = eglCreateWindowSurface(_context->display, _context->config, _outputSurface, nullptr);
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}
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// 1. Activate the OpenGL context for this surface
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_context->use(_surface);
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// 2. Set the viewport for rendering
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glViewport(0, 0, _width, _height);
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glDisable(GL_BLEND);
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// 3. Bind the input texture
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glBindTexture(texture.target, texture.id);
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glTexParameteri(texture.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(texture.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri(texture.target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(texture.target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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// 4. Draw it using the pass-through shader which also applies transforms
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_passThroughShader.draw(texture, transformMatrix);
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// 5. Swap buffers to pass it to the window surface
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eglSwapBuffers(_context->display, _surface);
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}
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} // namespace vision
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