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/*
* Copyright (C) 2021 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2021 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-plugin-fw
* Created on: 20 нояб. 2021 г.
*
* lsp-plugin-fw is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-plugin-fw is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-plugin-fw. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_PLUG_FW_WRAP_LV2_EXECUTOR_H_
#define LSP_PLUG_IN_PLUG_FW_WRAP_LV2_EXECUTOR_H_
#include <lsp-plug.in/plug-fw/version.h>
#include <lsp-plug.in/ipc/IExecutor.h>
#include <lsp-plug.in/plug-fw/wrap/lv2/extensions.h>
namespace lsp
{
namespace lv2
{
/**
* Executor service used for running LV2 offline tasks
*/
class Executor: public ipc::IExecutor
{
private:
static const uint32_t magic =
(uint32_t('L') << 24) |
(uint32_t('V') << 16) |
(uint32_t('2') << 8) |
(uint32_t('E') << 0);
LV2_Worker_Schedule *sched;
typedef struct task_descriptor_t
{
uint32_t magic;
ipc::ITask *task;
} task_descriptor_t;
public:
Executor(LV2_Worker_Schedule *schedule)
{
sched = schedule;
}
~Executor()
{
sched = NULL;
}
public:
virtual bool submit(ipc::ITask *task)
{
// Check state of task
if (!task->idle())
return false;
// Try to submit task
task_descriptor_t descr = { magic, task };
change_task_state(task, ipc::ITask::TS_SUBMITTED);
if (sched->schedule_work(sched->handle, sizeof(task_descriptor_t), &descr) == LV2_WORKER_SUCCESS)
return true;
// Failed to submit task, return status back
change_task_state(task, ipc::ITask::TS_IDLE);
return false;
}
inline void run_job(
LV2_Worker_Respond_Handle handle,
LV2_Worker_Respond_Function respond,
uint32_t size,
const void* data
)
{
// Validate structure
if (size != sizeof(task_descriptor_t))
return;
const task_descriptor_t *descr = reinterpret_cast<const task_descriptor_t *>(data);
if (descr->magic != magic)
return;
// Run task
run_task(descr->task);
}
};
} /* namespace lv2 */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_PLUG_FW_WRAP_LV2_EXECUTOR_H_ */
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