libs-audiotoolbox/AudioQueue.h at master · gnustep/libs-audiotoolbox · GitHub

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/*
   AudioQueue.h

   Copyright (C) 2026 Free Software Foundation, Inc.

   Author: Gregory John Casamento <greg.casamento@gmail.com>
   Date: August 2026

   This file is part of the GNUstep AudioToolbox Library.

   This library 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 2.1 of the License, or (at your option) any later version.

   This library 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 this library; see the file COPYING.LIB.
   If not, see <http://www.gnu.org/licenses/> or write to the
   Free Software Foundation, 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#ifndef GNUSTEP_AUDIOTOOLBOX_AUDIOQUEUE_H
#define GNUSTEP_AUDIOTOOLBOX_AUDIOQUEUE_H

#include "AudioToolbox.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct OpaqueAudioQueue *AudioQueueRef;
typedef struct AudioQueueBuffer {
  const UInt32 mAudioDataBytesCapacity;
  void *const mAudioData;
  UInt32 mAudioDataByteSize;
  void *mUserData;
  UInt32 mPacketDescriptionCapacity;
  AudioStreamPacketDescription *mPacketDescriptions;
  UInt32 mPacketDescriptionCount;
} AudioQueueBuffer;
typedef AudioQueueBuffer *AudioQueueBufferRef;

typedef void (*AudioQueueOutputCallback)(void *inUserData,
                                         AudioQueueRef inAQ,
                                         AudioQueueBufferRef inBuffer);
typedef void (*AudioQueueInputCallback)(void *inUserData,
                                        AudioQueueRef inAQ,
                                        AudioQueueBufferRef inBuffer,
                                        const AudioTimeStamp *inStartTime,
                                        UInt32 inNumberPacketDescriptions,
                                        const AudioStreamPacketDescription *inPacketDescs);

OSStatus AudioQueueNewOutput(const AudioStreamBasicDescription *inFormat,
                             AudioQueueOutputCallback inCallbackProc,
                             void *inUserData,
                             CFRunLoopRef inCallbackRunLoop,
                             CFStringRef inCallbackRunLoopMode,
                             UInt32 inFlags,
                             AudioQueueRef *outAQ);
OSStatus AudioQueueNewInput(const AudioStreamBasicDescription *inFormat,
                            AudioQueueInputCallback inCallbackProc,
                            void *inUserData,
                            CFRunLoopRef inCallbackRunLoop,
                            CFStringRef inCallbackRunLoopMode,
                            UInt32 inFlags,
                            AudioQueueRef *outAQ);
OSStatus AudioQueueDispose(AudioQueueRef inAQ, Boolean inImmediate);
OSStatus AudioQueueAllocateBuffer(AudioQueueRef inAQ,
                                  UInt32 inBufferByteSize,
                                  AudioQueueBufferRef *outBuffer);
OSStatus AudioQueueFreeBuffer(AudioQueueRef inAQ, AudioQueueBufferRef inBuffer);
OSStatus AudioQueueEnqueueBuffer(AudioQueueRef inAQ,
                                 AudioQueueBufferRef inBuffer,
                                 UInt32 inNumPacketDescs,
                                 const AudioStreamPacketDescription *inPacketDescs);
OSStatus AudioQueueStart(AudioQueueRef inAQ, const AudioTimeStamp *inStartTime);
OSStatus AudioQueuePause(AudioQueueRef inAQ);
OSStatus AudioQueueStop(AudioQueueRef inAQ, Boolean inImmediate);
OSStatus AudioQueueFlush(AudioQueueRef inAQ);

#ifdef __cplusplus
}
#endif

#endif