| /* |
| * 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 <SLES/OpenSLES.h> |
| |
| #include "webrtc/base/arraysize.h" |
| #include "webrtc/modules/audio_device/android/audio_common.h" |
| |
| using webrtc::kNumChannels; |
| |
| namespace webrtc { |
| |
| // Returns a string representation given an integer SL_RESULT_XXX code. |
| // The mapping can be found in <SLES/OpenSLES.h>. |
| const char* GetSLErrorString(size_t code) { |
| static const char* sl_error_strings[] = { |
| "SL_RESULT_SUCCESS", // 0 |
| "SL_RESULT_PRECONDITIONS_VIOLATED", // 1 |
| "SL_RESULT_PARAMETER_INVALID", // 2 |
| "SL_RESULT_MEMORY_FAILURE", // 3 |
| "SL_RESULT_RESOURCE_ERROR", // 4 |
| "SL_RESULT_RESOURCE_LOST", // 5 |
| "SL_RESULT_IO_ERROR", // 6 |
| "SL_RESULT_BUFFER_INSUFFICIENT", // 7 |
| "SL_RESULT_CONTENT_CORRUPTED", // 8 |
| "SL_RESULT_CONTENT_UNSUPPORTED", // 9 |
| "SL_RESULT_CONTENT_NOT_FOUND", // 10 |
| "SL_RESULT_PERMISSION_DENIED", // 11 |
| "SL_RESULT_FEATURE_UNSUPPORTED", // 12 |
| "SL_RESULT_INTERNAL_ERROR", // 13 |
| "SL_RESULT_UNKNOWN_ERROR", // 14 |
| "SL_RESULT_OPERATION_ABORTED", // 15 |
| "SL_RESULT_CONTROL_LOST", // 16 |
| }; |
| |
| if (code >= arraysize(sl_error_strings)) { |
| return "SL_RESULT_UNKNOWN_ERROR"; |
| } |
| return sl_error_strings[code]; |
| } |
| |
| 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 |