1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 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 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef AUDIO_REMIX_RESAMPLE_H_ 12 #define AUDIO_REMIX_RESAMPLE_H_ 13 14 #include "api/audio/audio_frame.h" 15 #include "common_audio/resampler/include/push_resampler.h" 16 17 namespace webrtc { 18 namespace voe { 19 20 // Upmix or downmix and resample the audio to `dst_frame`. Expects `dst_frame` 21 // to have its sample rate and channels members set to the desired values. 22 // Updates the `samples_per_channel_` member accordingly. 23 // 24 // This version has an AudioFrame `src_frame` as input and sets the output 25 // `timestamp_`, `elapsed_time_ms_` and `ntp_time_ms_` members equals to the 26 // input ones. 27 void RemixAndResample(const AudioFrame& src_frame, 28 PushResampler<int16_t>* resampler, 29 AudioFrame* dst_frame); 30 31 // This version has a pointer to the samples `src_data` as input and receives 32 // `samples_per_channel`, `num_channels` and `sample_rate_hz` of the data as 33 // parameters. 34 void RemixAndResample(const int16_t* src_data, 35 size_t samples_per_channel, 36 size_t num_channels, 37 int sample_rate_hz, 38 PushResampler<int16_t>* resampler, 39 AudioFrame* dst_frame); 40 41 } // namespace voe 42 } // namespace webrtc 43 44 #endif // AUDIO_REMIX_RESAMPLE_H_ 45