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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_NORMAL_H_ | 11 #ifndef WEBRTC_MODULES_AUDIO_CODING_NETEQ_NORMAL_H_ |
12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_NORMAL_H_ | 12 #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_NORMAL_H_ |
13 | 13 |
14 #include <string.h> // Access to size_t. | 14 #include <string.h> // Access to size_t. |
15 | 15 |
16 #include <vector> | 16 #include <vector> |
17 | 17 |
| 18 #include "webrtc/base/checks.h" |
18 #include "webrtc/base/constructormagic.h" | 19 #include "webrtc/base/constructormagic.h" |
| 20 #include "webrtc/base/safe_conversions.h" |
19 #include "webrtc/modules/audio_coding/neteq/audio_multi_vector.h" | 21 #include "webrtc/modules/audio_coding/neteq/audio_multi_vector.h" |
20 #include "webrtc/modules/audio_coding/neteq/defines.h" | 22 #include "webrtc/modules/audio_coding/neteq/defines.h" |
21 #include "webrtc/typedefs.h" | 23 #include "webrtc/typedefs.h" |
22 | 24 |
23 namespace webrtc { | 25 namespace webrtc { |
24 | 26 |
25 // Forward declarations. | 27 // Forward declarations. |
26 class BackgroundNoise; | 28 class BackgroundNoise; |
27 class DecoderDatabase; | 29 class DecoderDatabase; |
28 class Expand; | 30 class Expand; |
29 | 31 |
30 // This class provides the "Normal" DSP operation, that is performed when | 32 // This class provides the "Normal" DSP operation, that is performed when |
31 // there is no data loss, no need to stretch the timing of the signal, and | 33 // there is no data loss, no need to stretch the timing of the signal, and |
32 // no other "special circumstances" are at hand. | 34 // no other "special circumstances" are at hand. |
33 class Normal { | 35 class Normal { |
34 public: | 36 public: |
35 Normal(int fs_hz, DecoderDatabase* decoder_database, | 37 Normal(int fs_hz, |
| 38 DecoderDatabase* decoder_database, |
36 const BackgroundNoise& background_noise, | 39 const BackgroundNoise& background_noise, |
37 Expand* expand) | 40 Expand* expand) |
38 : fs_hz_(fs_hz), | 41 : fs_hz_(fs_hz), |
39 decoder_database_(decoder_database), | 42 decoder_database_(decoder_database), |
40 background_noise_(background_noise), | 43 background_noise_(background_noise), |
41 expand_(expand) { | 44 expand_(expand), |
42 } | 45 samples_per_ms_(rtc::CheckedDivExact(fs_hz_, 1000)), |
| 46 default_win_slope_Q14_( |
| 47 rtc::dchecked_cast<uint16_t>((1 << 14) / samples_per_ms_)) {} |
43 | 48 |
44 virtual ~Normal() {} | 49 virtual ~Normal() {} |
45 | 50 |
46 // Performs the "Normal" operation. The decoder data is supplied in |input|, | 51 // Performs the "Normal" operation. The decoder data is supplied in |input|, |
47 // having |length| samples in total for all channels (interleaved). The | 52 // having |length| samples in total for all channels (interleaved). The |
48 // result is written to |output|. The number of channels allocated in | 53 // result is written to |output|. The number of channels allocated in |
49 // |output| defines the number of channels that will be used when | 54 // |output| defines the number of channels that will be used when |
50 // de-interleaving |input|. |last_mode| contains the mode used in the previous | 55 // de-interleaving |input|. |last_mode| contains the mode used in the previous |
51 // GetAudio call (i.e., not the current one), and |external_mute_factor| is | 56 // GetAudio call (i.e., not the current one), and |external_mute_factor| is |
52 // a pointer to the mute factor in the NetEqImpl class. | 57 // a pointer to the mute factor in the NetEqImpl class. |
53 int Process(const int16_t* input, size_t length, | 58 int Process(const int16_t* input, size_t length, |
54 Modes last_mode, | 59 Modes last_mode, |
55 int16_t* external_mute_factor_array, | 60 int16_t* external_mute_factor_array, |
56 AudioMultiVector* output); | 61 AudioMultiVector* output); |
57 | 62 |
58 private: | 63 private: |
59 int fs_hz_; | 64 int fs_hz_; |
60 DecoderDatabase* decoder_database_; | 65 DecoderDatabase* decoder_database_; |
61 const BackgroundNoise& background_noise_; | 66 const BackgroundNoise& background_noise_; |
62 Expand* expand_; | 67 Expand* expand_; |
| 68 const size_t samples_per_ms_; |
| 69 const int16_t default_win_slope_Q14_; |
63 | 70 |
64 RTC_DISALLOW_COPY_AND_ASSIGN(Normal); | 71 RTC_DISALLOW_COPY_AND_ASSIGN(Normal); |
65 }; | 72 }; |
66 | 73 |
67 } // namespace webrtc | 74 } // namespace webrtc |
68 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_NORMAL_H_ | 75 #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_NORMAL_H_ |
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