flutter-plugins/packages/embedder_texture/aurora/embedder_texture_plugin.cpp

/**
 * SPDX-FileCopyrightText: Copyright 2023 Open Mobile Platform LLC <community@omp.ru>
 * SPDX-License-Identifier: BSD-3-Clause
 */
#include <embedder_texture/embedder_texture_plugin.h>
#include <flutter/method-channel.h>
#include <flutter/platform-methods.h>

void EmbedderTexturePlugin::RegisterWithRegistrar(PluginRegistrar &registrar)
{
    TextureRegistrar *plugin = registrar.GetRegisterTexture();

    registrar.RegisterMethodChannel("embedder_texture",
                                    MethodCodecType::Standard,
                                    [this, plugin](const MethodCall &call) { this->onMethodCall(call, plugin); });
}

FlutterPixelBuffer EmbedderTexturePlugin::getBuffer() {
    uint8_t pixels[] =
    {
        1, 0, 0,
        0, 1, 0,
        0, 0, 1,
    };
    return FlutterPixelBuffer { pixels };
}

void EmbedderTexturePlugin::onMethodCall(const MethodCall &call, TextureRegistrar *plugin) {
    const auto &method = call.GetMethod();

    if (method == "create") {
        onCreate(call, plugin);
        return;
    }
    
    if (method == "remove") {
        onRemove(call, plugin);
        return;
    }

    unimplemented(call);
}

void EmbedderTexturePlugin::onCreate(const MethodCall &call, TextureRegistrar *plugin)
{
    auto textureId = plugin->RegisterTexture(TextureType::Pixels,
                              [this](size_t width, size_t height) {
                                  return TextureVariant(this->getBuffer());
                              });

    call.SendSuccessResponse(textureId);
}

void EmbedderTexturePlugin::onRemove(const MethodCall &call, TextureRegistrar *plugin)
{
    auto textureId = call.GetArgument<Encodable::Int>("textureId");

    plugin->UnregisterTexture(textureId);

    call.SendSuccessResponse(true);
}

void EmbedderTexturePlugin::unimplemented(const MethodCall &call)
{
    call.SendSuccessResponse(nullptr);
}