| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "webrtc/modules/audio_device/android/opensles_common.h" |
| |
| #include <assert.h> |
| |
| #include "webrtc/modules/audio_device/android/audio_common.h" |
| |
| using webrtc::kNumChannels; |
| |
| namespace webrtc { |
| |
| SLDataFormat_PCM CreatePcmConfiguration(int sample_rate) { |
| SLDataFormat_PCM configuration; |
| configuration.formatType = SL_DATAFORMAT_PCM; |
| configuration.numChannels = kNumChannels; |
| // According to the opensles documentation in the ndk: |
| // samplesPerSec is actually in units of milliHz, despite the misleading name. |
| // It further recommends using constants. However, this would lead to a lot |
| // of boilerplate code so it is not done here. |
| configuration.samplesPerSec = sample_rate * 1000; |
| configuration.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16; |
| configuration.containerSize = SL_PCMSAMPLEFORMAT_FIXED_16; |
| configuration.channelMask = SL_SPEAKER_FRONT_CENTER; |
| if (2 == configuration.numChannels) { |
| configuration.channelMask = |
| SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT; |
| } |
| configuration.endianness = SL_BYTEORDER_LITTLEENDIAN; |
| return configuration; |
| } |
| |
| } // namespace webrtc_opensl |