| /* |
| * 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_DOLBY_TRUEHD 14 |
| #define ENCODING_AAC_ELD 15 |
| #define ENCODING_AAC_XHE 16 |
| |
| #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_DOLBY_TRUEHD: |
| return AUDIO_FORMAT_DOLBY_TRUEHD; |
| case ENCODING_IEC61937: |
| return AUDIO_FORMAT_IEC61937; |
| case ENCODING_AAC_ELD: |
| return AUDIO_FORMAT_AAC_ELD; |
| case ENCODING_AAC_XHE: |
| return AUDIO_FORMAT_AAC; // FIXME temporary value, needs addition of xHE-AAC |
| 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_DOLBY_TRUEHD: |
| return ENCODING_DOLBY_TRUEHD; |
| case AUDIO_FORMAT_AAC_ELD: |
| return ENCODING_AAC_ELD; |
| // FIXME needs addition of AUDIO_FORMAT_AAC_XHE |
| //case AUDIO_FORMAT_AAC_XHE: |
| // return ENCODING_AAC_XHE; |
| case AUDIO_FORMAT_DEFAULT: |
| return ENCODING_DEFAULT; |
| default: |
| return ENCODING_INVALID; |
| } |
| } |
| |
| // This function converts Java channel masks to a native channel mask. |
| // validity should be checked with audio_is_output_channel(). |
| static inline audio_channel_mask_t nativeChannelMaskFromJavaChannelMasks( |
| jint channelPositionMask, jint channelIndexMask) |
| { |
| // 0 is the java android.media.AudioFormat.CHANNEL_INVALID value |
| if (channelIndexMask != 0) { // channel index mask takes priority |
| // To convert to a native channel mask, the Java channel index mask |
| // requires adding the index representation. |
| return audio_channel_mask_from_representation_and_bits( |
| AUDIO_CHANNEL_REPRESENTATION_INDEX, |
| channelIndexMask); |
| } |
| // To convert to a native channel mask, the Java channel position mask |
| // requires a shift by 2 to skip the two deprecated channel |
| // configurations "default" and "mono". |
| return (audio_channel_mask_t)((uint32_t)channelPositionMask >> 2); |
| } |
| |
| 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 |