1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef AudioFileReaderMac_h
30#define AudioFileReaderMac_h
31
32#include <AudioToolbox/AudioFile.h>
33#include <AudioToolbox/ExtendedAudioFile.h>
34#include <wtf/PassRefPtr.h>
35
36namespace WebCore {
37
38class AudioBus;
39
40// Wrapper class for AudioFile and ExtAudioFile CoreAudio APIs for reading files and in-memory versions of them...
41
42class AudioFileReader {
43public:
44    AudioFileReader(const char* filePath);
45    AudioFileReader(const void* data, size_t dataSize);
46    ~AudioFileReader();
47
48    // Returns 0 if error
49    PassRefPtr<AudioBus> createBus(float sampleRate, bool mixToMono);
50
51    const void* data() const { return m_data; }
52    size_t dataSize() const { return m_dataSize; }
53
54private:
55    static OSStatus readProc(void* clientData, SInt64 position, UInt32 requestCount, void* buffer, UInt32* actualCount);
56    static SInt64 getSizeProc(void* clientData);
57
58    const void* m_data;
59    size_t m_dataSize;
60
61    AudioFileID m_audioFileID;
62    ExtAudioFileRef m_extAudioFileRef;
63
64    AudioStreamBasicDescription m_fileDataFormat;
65    AudioStreamBasicDescription m_clientDataFormat;
66};
67
68} // namespace WebCore
69
70#endif // AudioFileReaderMac_h
71