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/*
* 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_MEDIA_AUDIOFORMAT_H
#define ANDROID_MEDIA_AUDIOFORMAT_H
#include <system/audio.h>
// keep these values in sync with AudioFormat.java
#define ENCODING_PCM_16BIT 2
#define ENCODING_PCM_8BIT 3
#define ENCODING_PCM_FLOAT 4
#define ENCODING_AC3 5
#define ENCODING_E_AC3 6
#define ENCODING_DTS 7
#define ENCODING_DTS_HD 8
#define ENCODING_MP3 9
#define ENCODING_AAC_LC 10
#define ENCODING_AAC_HE_V1 11
#define ENCODING_AAC_HE_V2 12
#define ENCODING_IEC61937 13
#define ENCODING_INVALID 0
#define ENCODING_DEFAULT 1
#define CHANNEL_INVALID 0
#define CHANNEL_OUT_DEFAULT 1
static inline audio_format_t audioFormatToNative(int audioFormat)
{
switch (audioFormat) {
case ENCODING_PCM_16BIT:
return AUDIO_FORMAT_PCM_16_BIT;
case ENCODING_PCM_8BIT:
return AUDIO_FORMAT_PCM_8_BIT;
case ENCODING_PCM_FLOAT:
return AUDIO_FORMAT_PCM_FLOAT;
case ENCODING_AC3:
return AUDIO_FORMAT_AC3;
case ENCODING_E_AC3:
return AUDIO_FORMAT_E_AC3;
case ENCODING_DTS:
return AUDIO_FORMAT_DTS;
case ENCODING_DTS_HD:
return AUDIO_FORMAT_DTS_HD;
case ENCODING_MP3:
return AUDIO_FORMAT_MP3;
case ENCODING_AAC_LC:
return AUDIO_FORMAT_AAC_LC;
case ENCODING_AAC_HE_V1:
return AUDIO_FORMAT_AAC_HE_V1;
case ENCODING_AAC_HE_V2:
return AUDIO_FORMAT_AAC_HE_V2;
case ENCODING_IEC61937:
return AUDIO_FORMAT_IEC61937;
case ENCODING_DEFAULT:
return AUDIO_FORMAT_DEFAULT;
default:
return AUDIO_FORMAT_INVALID;
}
}
static inline int audioFormatFromNative(audio_format_t nativeFormat)
{
switch (nativeFormat) {
case AUDIO_FORMAT_PCM_16_BIT:
return ENCODING_PCM_16BIT;
case AUDIO_FORMAT_PCM_8_BIT:
return ENCODING_PCM_8BIT;
case AUDIO_FORMAT_PCM_FLOAT:
return ENCODING_PCM_FLOAT;
// map these to ENCODING_PCM_FLOAT
case AUDIO_FORMAT_PCM_8_24_BIT:
case AUDIO_FORMAT_PCM_24_BIT_PACKED:
case AUDIO_FORMAT_PCM_32_BIT:
return ENCODING_PCM_FLOAT;
case AUDIO_FORMAT_AC3:
return ENCODING_AC3;
case AUDIO_FORMAT_E_AC3:
return ENCODING_E_AC3;
case AUDIO_FORMAT_DTS:
return ENCODING_DTS;
case AUDIO_FORMAT_DTS_HD:
return ENCODING_DTS_HD;
case AUDIO_FORMAT_MP3:
return ENCODING_MP3;
case AUDIO_FORMAT_AAC_LC:
return ENCODING_AAC_LC;
case AUDIO_FORMAT_AAC_HE_V1:
return ENCODING_AAC_HE_V1;
case AUDIO_FORMAT_AAC_HE_V2:
return ENCODING_AAC_HE_V2;
case AUDIO_FORMAT_IEC61937:
return ENCODING_IEC61937;
case AUDIO_FORMAT_DEFAULT:
return ENCODING_DEFAULT;
default:
return ENCODING_INVALID;
}
}
static inline audio_channel_mask_t outChannelMaskToNative(int channelMask)
{
switch (channelMask) {
case CHANNEL_OUT_DEFAULT:
case CHANNEL_INVALID:
return AUDIO_CHANNEL_NONE;
default:
return (audio_channel_mask_t)(channelMask>>2);
}
}
static inline int outChannelMaskFromNative(audio_channel_mask_t nativeMask)
{
switch (nativeMask) {
case AUDIO_CHANNEL_NONE:
return CHANNEL_OUT_DEFAULT;
default:
return (int)nativeMask<<2;
}
}
static inline audio_channel_mask_t inChannelMaskToNative(int channelMask)
{
return (audio_channel_mask_t)channelMask;
}
static inline int inChannelMaskFromNative(audio_channel_mask_t nativeMask)
{
return (int)nativeMask;
}
#endif // ANDROID_MEDIA_AUDIOFORMAT_H
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