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1 /* | 1 /* |
2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2011 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 | 11 |
12 /* | 12 /* |
13 * A wrapper for resampling a numerous amount of sampling combinations. | 13 * A wrapper for resampling a numerous amount of sampling combinations. |
14 */ | 14 */ |
15 | 15 |
16 #ifndef WEBRTC_RESAMPLER_RESAMPLER_H_ | 16 #ifndef WEBRTC_RESAMPLER_RESAMPLER_H_ |
17 #define WEBRTC_RESAMPLER_RESAMPLER_H_ | 17 #define WEBRTC_RESAMPLER_RESAMPLER_H_ |
18 | 18 |
| 19 #include <stddef.h> |
| 20 |
19 #include "webrtc/typedefs.h" | 21 #include "webrtc/typedefs.h" |
20 | 22 |
21 namespace webrtc { | 23 namespace webrtc { |
22 | 24 |
23 // All methods return 0 on success and -1 on failure. | 25 // All methods return 0 on success and -1 on failure. |
24 class Resampler | 26 class Resampler |
25 { | 27 { |
26 | 28 |
27 public: | 29 public: |
28 Resampler(); | 30 Resampler(); |
29 Resampler(int inFreq, int outFreq, int num_channels); | 31 Resampler(int inFreq, int outFreq, int num_channels); |
30 ~Resampler(); | 32 ~Resampler(); |
31 | 33 |
32 // Reset all states | 34 // Reset all states |
33 int Reset(int inFreq, int outFreq, int num_channels); | 35 int Reset(int inFreq, int outFreq, int num_channels); |
34 | 36 |
35 // Reset all states if any parameter has changed | 37 // Reset all states if any parameter has changed |
36 int ResetIfNeeded(int inFreq, int outFreq, int num_channels); | 38 int ResetIfNeeded(int inFreq, int outFreq, int num_channels); |
37 | 39 |
38 // Resample samplesIn to samplesOut. | 40 // Resample samplesIn to samplesOut. |
39 int Push(const int16_t* samplesIn, int lengthIn, int16_t* samplesOut, | 41 int Push(const int16_t* samplesIn, size_t lengthIn, int16_t* samplesOut, |
40 int maxLen, int &outLen); | 42 size_t maxLen, size_t &outLen); |
41 | 43 |
42 private: | 44 private: |
43 enum ResamplerMode | 45 enum ResamplerMode |
44 { | 46 { |
45 kResamplerMode1To1, | 47 kResamplerMode1To1, |
46 kResamplerMode1To2, | 48 kResamplerMode1To2, |
47 kResamplerMode1To3, | 49 kResamplerMode1To3, |
48 kResamplerMode1To4, | 50 kResamplerMode1To4, |
49 kResamplerMode1To6, | 51 kResamplerMode1To6, |
50 kResamplerMode1To12, | 52 kResamplerMode1To12, |
(...skipping 15 matching lines...) Expand all Loading... |
66 }; | 68 }; |
67 | 69 |
68 // Generic pointers since we don't know what states we'll need | 70 // Generic pointers since we don't know what states we'll need |
69 void* state1_; | 71 void* state1_; |
70 void* state2_; | 72 void* state2_; |
71 void* state3_; | 73 void* state3_; |
72 | 74 |
73 // Storage if needed | 75 // Storage if needed |
74 int16_t* in_buffer_; | 76 int16_t* in_buffer_; |
75 int16_t* out_buffer_; | 77 int16_t* out_buffer_; |
76 int in_buffer_size_; | 78 size_t in_buffer_size_; |
77 int out_buffer_size_; | 79 size_t out_buffer_size_; |
78 int in_buffer_size_max_; | 80 size_t in_buffer_size_max_; |
79 int out_buffer_size_max_; | 81 size_t out_buffer_size_max_; |
80 | 82 |
81 int my_in_frequency_khz_; | 83 int my_in_frequency_khz_; |
82 int my_out_frequency_khz_; | 84 int my_out_frequency_khz_; |
83 ResamplerMode my_mode_; | 85 ResamplerMode my_mode_; |
84 int num_channels_; | 86 int num_channels_; |
85 | 87 |
86 // Extra instance for stereo | 88 // Extra instance for stereo |
87 Resampler* slave_left_; | 89 Resampler* slave_left_; |
88 Resampler* slave_right_; | 90 Resampler* slave_right_; |
89 }; | 91 }; |
90 | 92 |
91 } // namespace webrtc | 93 } // namespace webrtc |
92 | 94 |
93 #endif // WEBRTC_RESAMPLER_RESAMPLER_H_ | 95 #endif // WEBRTC_RESAMPLER_RESAMPLER_H_ |
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