| /* |
| * 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 |