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148 lines
3.7 KiB
148 lines
3.7 KiB
/*
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* H.265 video codec.
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* Copyright (c) 2013-2014 struktur AG, Dirk Farin <farin@struktur.de>
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*
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* This file is part of libde265.
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*
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* libde265 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* libde265 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with libde265. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef DE265_THREADS_H
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#define DE265_THREADS_H
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#include "libde265/de265.h"
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_STDBOOL_H
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#include <stdbool.h>
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#endif
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#include <deque>
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#include <string>
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#include <atomic>
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#ifndef _WIN32
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#include <pthread.h>
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typedef pthread_t de265_thread;
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typedef pthread_mutex_t de265_mutex;
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typedef pthread_cond_t de265_cond;
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#else // _WIN32
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#if !defined(NOMINMAX)
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#define NOMINMAX 1
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#endif
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#include <windows.h>
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#include "../extra/win32cond.h"
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#if _MSC_VER > 1310
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#include <intrin.h>
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#endif
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typedef HANDLE de265_thread;
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typedef HANDLE de265_mutex;
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typedef win32_cond_t de265_cond;
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#endif // _WIN32
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#ifndef _WIN32
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int de265_thread_create(de265_thread* t, void *(*start_routine) (void *), void *arg);
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#else
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int de265_thread_create(de265_thread* t, LPTHREAD_START_ROUTINE start_routine, void *arg);
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#endif
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void de265_thread_join(de265_thread t);
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void de265_thread_destroy(de265_thread* t);
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void de265_mutex_init(de265_mutex* m);
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void de265_mutex_destroy(de265_mutex* m);
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void de265_mutex_lock(de265_mutex* m);
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void de265_mutex_unlock(de265_mutex* m);
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void de265_cond_init(de265_cond* c);
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void de265_cond_destroy(de265_cond* c);
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void de265_cond_broadcast(de265_cond* c, de265_mutex* m);
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void de265_cond_wait(de265_cond* c,de265_mutex* m);
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void de265_cond_signal(de265_cond* c);
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class de265_progress_lock
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{
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public:
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de265_progress_lock();
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~de265_progress_lock();
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void wait_for_progress(int progress);
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void set_progress(int progress);
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void increase_progress(int progress);
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int get_progress() const;
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void reset(int value=0) { mProgress=value; }
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private:
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int mProgress;
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// private data
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de265_mutex mutex;
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de265_cond cond;
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};
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class thread_task
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{
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public:
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thread_task() : state(Queued) { }
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virtual ~thread_task() { }
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enum { Queued, Running, Blocked, Finished } state;
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virtual void work() = 0;
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virtual std::string name() const { return "noname"; }
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};
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#define MAX_THREADS 32
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/* TODO NOTE: When unblocking a task, we have to check first
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if there are threads waiting because of the run-count limit.
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If there are higher-priority tasks, those should be run instead
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of the just unblocked task.
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*/
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class thread_pool
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{
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public:
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bool stopped;
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std::deque<thread_task*> tasks; // we are not the owner
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de265_thread thread[MAX_THREADS];
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int num_threads;
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int num_threads_working;
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int ctbx[MAX_THREADS]; // the CTB the thread is working on
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int ctby[MAX_THREADS];
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de265_mutex mutex;
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de265_cond cond_var;
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};
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de265_error start_thread_pool(thread_pool* pool, int num_threads);
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void stop_thread_pool(thread_pool* pool); // do not process remaining tasks
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void add_task(thread_pool* pool, thread_task* task); // TOCO: can make thread_task const
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#endif
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