diff options
Diffstat (limited to 'third_party/libwebrtc/modules/audio_device/android/opensles_common.cc')
-rw-r--r-- | third_party/libwebrtc/modules/audio_device/android/opensles_common.cc | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_device/android/opensles_common.cc b/third_party/libwebrtc/modules/audio_device/android/opensles_common.cc new file mode 100644 index 0000000000..019714dae4 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_device/android/opensles_common.cc @@ -0,0 +1,103 @@ +/* + * 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 "modules/audio_device/android/opensles_common.h" + +#include <SLES/OpenSLES.h> + +#include "rtc_base/arraysize.h" +#include "rtc_base/checks.h" + +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(size_t channels, + int sample_rate, + size_t bits_per_sample) { + RTC_CHECK_EQ(bits_per_sample, SL_PCMSAMPLEFORMAT_FIXED_16); + SLDataFormat_PCM format; + format.formatType = SL_DATAFORMAT_PCM; + format.numChannels = static_cast<SLuint32>(channels); + // Note that, the unit of sample rate is actually in milliHertz and not Hertz. + switch (sample_rate) { + case 8000: + format.samplesPerSec = SL_SAMPLINGRATE_8; + break; + case 16000: + format.samplesPerSec = SL_SAMPLINGRATE_16; + break; + case 22050: + format.samplesPerSec = SL_SAMPLINGRATE_22_05; + break; + case 32000: + format.samplesPerSec = SL_SAMPLINGRATE_32; + break; + case 44100: + format.samplesPerSec = SL_SAMPLINGRATE_44_1; + break; + case 48000: + format.samplesPerSec = SL_SAMPLINGRATE_48; + break; + case 64000: + format.samplesPerSec = SL_SAMPLINGRATE_64; + break; + case 88200: + format.samplesPerSec = SL_SAMPLINGRATE_88_2; + break; + case 96000: + format.samplesPerSec = SL_SAMPLINGRATE_96; + break; + default: + RTC_CHECK(false) << "Unsupported sample rate: " << sample_rate; + break; + } + format.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16; + format.containerSize = SL_PCMSAMPLEFORMAT_FIXED_16; + format.endianness = SL_BYTEORDER_LITTLEENDIAN; + if (format.numChannels == 1) { + format.channelMask = SL_SPEAKER_FRONT_CENTER; + } else if (format.numChannels == 2) { + format.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT; + } else { + RTC_CHECK(false) << "Unsupported number of channels: " + << format.numChannels; + } + return format; +} + +} // namespace webrtc |