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Diffstat (limited to 'include/media/AudioResamplerPublic.h')
| -rw-r--r-- | include/media/AudioResamplerPublic.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/media/AudioResamplerPublic.h b/include/media/AudioResamplerPublic.h new file mode 100644 index 0000000..97847a0 --- /dev/null +++ b/include/media/AudioResamplerPublic.h @@ -0,0 +1,29 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * 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. + */ + +#ifndef ANDROID_AUDIO_RESAMPLER_PUBLIC_H +#define ANDROID_AUDIO_RESAMPLER_PUBLIC_H + +// AUDIO_RESAMPLER_DOWN_RATIO_MAX is the maximum ratio between the original +// audio sample rate and the target rate when downsampling, +// as permitted in the audio framework, e.g. AudioTrack and AudioFlinger. +// In practice, it is not recommended to downsample more than 6:1 +// for best audio quality, even though the audio framework permits a larger +// downsampling ratio. +// TODO: replace with an API +#define AUDIO_RESAMPLER_DOWN_RATIO_MAX 256 + +#endif // ANDROID_AUDIO_RESAMPLER_PUBLIC_H |