| // Copyright 2019 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "starboard/audio_sink.h" |
| |
| #include "starboard/common/log.h" |
| |
| int SbAudioSinkGetMinBufferSizeInFrames(int channels, |
| SbMediaAudioSampleType sample_type, |
| int sampling_frequency_hz) { |
| if (channels <= 0 || channels > SbAudioSinkGetMaxChannels()) { |
| SB_LOG(ERROR) << "Not support channels count " << channels; |
| return -1; |
| } |
| if (sample_type != kSbMediaAudioSampleTypeInt16Deprecated && |
| sample_type != kSbMediaAudioSampleTypeFloat32) { |
| SB_LOG(ERROR) << "Not support sample type " << sample_type; |
| return -1; |
| } |
| if (sampling_frequency_hz <= 0) { |
| SB_LOG(ERROR) << "Not support sample frequency " << sampling_frequency_hz; |
| return -1; |
| } |
| // Larger buffer size would have more latency when changing playback rate. |
| if (sampling_frequency_hz < 24000) { |
| return 3 * 1024; |
| } |
| |
| return 5 * 1024; |
| } |