1/*
2 * libjingle
3 * Copyright 2004 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef TALK_MEDIA_BASE_VOICEPROCESSOR_H_
29#define TALK_MEDIA_BASE_VOICEPROCESSOR_H_
30
31#include "talk/media/base/audioframe.h"
32#include "webrtc/base/basictypes.h"
33#include "webrtc/base/sigslot.h"
34
35namespace cricket {
36
37enum MediaProcessorDirection {
38    MPD_INVALID = 0,
39    MPD_RX = 1 << 0,
40    MPD_TX = 1 << 1,
41    MPD_RX_AND_TX = MPD_RX | MPD_TX,
42};
43
44class VoiceProcessor : public sigslot::has_slots<> {
45 public:
46  virtual ~VoiceProcessor() {}
47  // Contents of frame may be manipulated by the processor.
48  // The processed data is expected to be the same size as the
49  // original data.
50  virtual void OnFrame(uint32 ssrc,
51                       MediaProcessorDirection direction,
52                       AudioFrame* frame) = 0;
53};
54
55}  // namespace cricket
56#endif  // TALK_MEDIA_BASE_VOICEPROCESSOR_H_
57