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| 1 /* | 1 /* |
| 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 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 |
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| 68 const T* const* channels() const { return channels(0); } | 68 const T* const* channels() const { return channels(0); } |
| 69 | 69 |
| 70 // Returns a pointer array to the channels for a specific band. | 70 // Returns a pointer array to the channels for a specific band. |
| 71 // Usage: | 71 // Usage: |
| 72 // channels(band)[channel][sample]. | 72 // channels(band)[channel][sample]. |
| 73 // Where: | 73 // Where: |
| 74 // 0 <= band < |num_bands_| | 74 // 0 <= band < |num_bands_| |
| 75 // 0 <= channel < |num_channels_| | 75 // 0 <= channel < |num_channels_| |
| 76 // 0 <= sample < |num_frames_per_band_| | 76 // 0 <= sample < |num_frames_per_band_| |
| 77 const T* const* channels(size_t band) const { | 77 const T* const* channels(size_t band) const { |
| 78 DCHECK_LT(band, num_bands_); | 78 RTC_DCHECK_LT(band, num_bands_); |
| 79 return &channels_[band * num_channels_]; | 79 return &channels_[band * num_channels_]; |
| 80 } | 80 } |
| 81 T* const* channels(size_t band) { | 81 T* const* channels(size_t band) { |
| 82 const ChannelBuffer<T>* t = this; | 82 const ChannelBuffer<T>* t = this; |
| 83 return const_cast<T* const*>(t->channels(band)); | 83 return const_cast<T* const*>(t->channels(band)); |
| 84 } | 84 } |
| 85 | 85 |
| 86 // Returns a pointer array to the bands for a specific channel. | 86 // Returns a pointer array to the bands for a specific channel. |
| 87 // Usage: | 87 // Usage: |
| 88 // bands(channel)[band][sample]. | 88 // bands(channel)[band][sample]. |
| 89 // Where: | 89 // Where: |
| 90 // 0 <= channel < |num_channels_| | 90 // 0 <= channel < |num_channels_| |
| 91 // 0 <= band < |num_bands_| | 91 // 0 <= band < |num_bands_| |
| 92 // 0 <= sample < |num_frames_per_band_| | 92 // 0 <= sample < |num_frames_per_band_| |
| 93 const T* const* bands(int channel) const { | 93 const T* const* bands(int channel) const { |
| 94 DCHECK_LT(channel, num_channels_); | 94 RTC_DCHECK_LT(channel, num_channels_); |
| 95 DCHECK_GE(channel, 0); | 95 RTC_DCHECK_GE(channel, 0); |
| 96 return &bands_[channel * num_bands_]; | 96 return &bands_[channel * num_bands_]; |
| 97 } | 97 } |
| 98 T* const* bands(int channel) { | 98 T* const* bands(int channel) { |
| 99 const ChannelBuffer<T>* t = this; | 99 const ChannelBuffer<T>* t = this; |
| 100 return const_cast<T* const*>(t->bands(channel)); | 100 return const_cast<T* const*>(t->bands(channel)); |
| 101 } | 101 } |
| 102 | 102 |
| 103 // Sets the |slice| pointers to the |start_frame| position for each channel. | 103 // Sets the |slice| pointers to the |start_frame| position for each channel. |
| 104 // Returns |slice| for convenience. | 104 // Returns |slice| for convenience. |
| 105 const T* const* Slice(T** slice, size_t start_frame) const { | 105 const T* const* Slice(T** slice, size_t start_frame) const { |
| 106 DCHECK_LT(start_frame, num_frames_); | 106 RTC_DCHECK_LT(start_frame, num_frames_); |
| 107 for (int i = 0; i < num_channels_; ++i) | 107 for (int i = 0; i < num_channels_; ++i) |
| 108 slice[i] = &channels_[i][start_frame]; | 108 slice[i] = &channels_[i][start_frame]; |
| 109 return slice; | 109 return slice; |
| 110 } | 110 } |
| 111 T** Slice(T** slice, size_t start_frame) { | 111 T** Slice(T** slice, size_t start_frame) { |
| 112 const ChannelBuffer<T>* t = this; | 112 const ChannelBuffer<T>* t = this; |
| 113 return const_cast<T**>(t->Slice(slice, start_frame)); | 113 return const_cast<T**>(t->Slice(slice, start_frame)); |
| 114 } | 114 } |
| 115 | 115 |
| 116 size_t num_frames() const { return num_frames_; } | 116 size_t num_frames() const { return num_frames_; } |
| 117 size_t num_frames_per_band() const { return num_frames_per_band_; } | 117 size_t num_frames_per_band() const { return num_frames_per_band_; } |
| 118 int num_channels() const { return num_channels_; } | 118 int num_channels() const { return num_channels_; } |
| 119 size_t num_bands() const { return num_bands_; } | 119 size_t num_bands() const { return num_bands_; } |
| 120 size_t size() const {return num_frames_ * num_channels_; } | 120 size_t size() const {return num_frames_ * num_channels_; } |
| 121 | 121 |
| 122 void SetDataForTesting(const T* data, size_t size) { | 122 void SetDataForTesting(const T* data, size_t size) { |
| 123 CHECK_EQ(size, this->size()); | 123 RTC_CHECK_EQ(size, this->size()); |
| 124 memcpy(data_.get(), data, size * sizeof(*data)); | 124 memcpy(data_.get(), data, size * sizeof(*data)); |
| 125 } | 125 } |
| 126 | 126 |
| 127 private: | 127 private: |
| 128 rtc::scoped_ptr<T[]> data_; | 128 rtc::scoped_ptr<T[]> data_; |
| 129 rtc::scoped_ptr<T* []> channels_; | 129 rtc::scoped_ptr<T* []> channels_; |
| 130 rtc::scoped_ptr<T* []> bands_; | 130 rtc::scoped_ptr<T* []> bands_; |
| 131 const size_t num_frames_; | 131 const size_t num_frames_; |
| 132 const size_t num_frames_per_band_; | 132 const size_t num_frames_per_band_; |
| 133 const int num_channels_; | 133 const int num_channels_; |
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| 160 | 160 |
| 161 mutable bool ivalid_; | 161 mutable bool ivalid_; |
| 162 mutable ChannelBuffer<int16_t> ibuf_; | 162 mutable ChannelBuffer<int16_t> ibuf_; |
| 163 mutable bool fvalid_; | 163 mutable bool fvalid_; |
| 164 mutable ChannelBuffer<float> fbuf_; | 164 mutable ChannelBuffer<float> fbuf_; |
| 165 }; | 165 }; |
| 166 | 166 |
| 167 } // namespace webrtc | 167 } // namespace webrtc |
| 168 | 168 |
| 169 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_CHANNEL_BUFFER_H_ | 169 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_CHANNEL_BUFFER_H_ |
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