godot/thirdparty/libwebp/src/utils/thread_utils.h

// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Multi-threaded worker
//
// Author: Skal ([email protected])

#ifndef WEBP_UTILS_THREAD_UTILS_H_
#define WEBP_UTILS_THREAD_UTILS_H_

#ifdef HAVE_CONFIG_H
#include "src/webp/config.h"
#endif

#include "src/webp/types.h"

#ifdef __cplusplus
extern "C" {
#endif

// State of the worker thread object
WebPWorkerStatus;

// Function to be called by the worker thread. Takes two opaque pointers as
// arguments (data1 and data2), and should return false in case of error.
WebPWorkerHook;

// Synchronization object used to launch job in the worker thread
WebPWorker;

// The interface for all thread-worker related functions. All these functions
// must be implemented.
WebPWorkerInterface;

// Install a new set of threading functions, overriding the defaults. This
// should be done before any workers are started, i.e., before any encoding or
// decoding takes place. The contents of the interface struct are copied, it
// is safe to free the corresponding memory after this call. This function is
// not thread-safe. Return false in case of invalid pointer or methods.
WEBP_EXTERN int WebPSetWorkerInterface(
    const WebPWorkerInterface* const winterface);

// Retrieve the currently set thread worker interface.
WEBP_EXTERN const WebPWorkerInterface* WebPGetWorkerInterface(void);

//------------------------------------------------------------------------------

#ifdef __cplusplus
}    // extern "C"
#endif

#endif  // WEBP_UTILS_THREAD_UTILS_H_