/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_MEDIA_AUDIOFORMAT_H
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#define ANDROID_MEDIA_AUDIOFORMAT_H
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#include <system/audio.h>
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// keep these values in sync with AudioFormat.java
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#define ENCODING_PCM_16BIT 2
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#define ENCODING_PCM_8BIT 3
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#define ENCODING_PCM_FLOAT 4
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#define ENCODING_AC3 5
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#define ENCODING_E_AC3 6
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#define ENCODING_DTS 7
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#define ENCODING_DTS_HD 8
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#define ENCODING_MP3 9
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#define ENCODING_AAC_LC 10
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#define ENCODING_AAC_HE_V1 11
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#define ENCODING_AAC_HE_V2 12
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#define ENCODING_IEC61937 13
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#define ENCODING_DOLBY_TRUEHD 14
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#define ENCODING_AAC_ELD 15
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#define ENCODING_AAC_XHE 16
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#define ENCODING_AC4 17
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#define ENCODING_E_AC3_JOC 18
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#define ENCODING_DOLBY_MAT 19
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#define ENCODING_INVALID 0
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#define ENCODING_DEFAULT 1
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#define CHANNEL_INVALID 0
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#define CHANNEL_OUT_DEFAULT 1
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static inline audio_format_t audioFormatToNative(int audioFormat)
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{
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switch (audioFormat) {
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case ENCODING_PCM_16BIT:
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return AUDIO_FORMAT_PCM_16_BIT;
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case ENCODING_PCM_8BIT:
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return AUDIO_FORMAT_PCM_8_BIT;
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case ENCODING_PCM_FLOAT:
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return AUDIO_FORMAT_PCM_FLOAT;
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case ENCODING_AC3:
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return AUDIO_FORMAT_AC3;
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case ENCODING_E_AC3:
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return AUDIO_FORMAT_E_AC3;
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case ENCODING_DTS:
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return AUDIO_FORMAT_DTS;
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case ENCODING_DTS_HD:
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return AUDIO_FORMAT_DTS_HD;
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case ENCODING_MP3:
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return AUDIO_FORMAT_MP3;
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case ENCODING_AAC_LC:
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return AUDIO_FORMAT_AAC_LC;
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case ENCODING_AAC_HE_V1:
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return AUDIO_FORMAT_AAC_HE_V1;
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case ENCODING_AAC_HE_V2:
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return AUDIO_FORMAT_AAC_HE_V2;
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case ENCODING_IEC61937:
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return AUDIO_FORMAT_IEC61937;
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case ENCODING_DOLBY_TRUEHD:
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return AUDIO_FORMAT_DOLBY_TRUEHD;
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case ENCODING_AAC_ELD:
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return AUDIO_FORMAT_AAC_ELD;
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case ENCODING_AAC_XHE:
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return AUDIO_FORMAT_AAC_XHE;
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case ENCODING_AC4:
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return AUDIO_FORMAT_AC4;
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case ENCODING_E_AC3_JOC:
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return AUDIO_FORMAT_E_AC3_JOC;
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case ENCODING_DEFAULT:
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return AUDIO_FORMAT_DEFAULT;
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case ENCODING_DOLBY_MAT:
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return AUDIO_FORMAT_MAT;
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default:
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return AUDIO_FORMAT_INVALID;
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}
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}
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static inline int audioFormatFromNative(audio_format_t nativeFormat)
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{
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switch (nativeFormat) {
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case AUDIO_FORMAT_PCM_16_BIT:
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return ENCODING_PCM_16BIT;
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case AUDIO_FORMAT_PCM_8_BIT:
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return ENCODING_PCM_8BIT;
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case AUDIO_FORMAT_PCM_FLOAT:
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return ENCODING_PCM_FLOAT;
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// map these to ENCODING_PCM_FLOAT
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case AUDIO_FORMAT_PCM_8_24_BIT:
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case AUDIO_FORMAT_PCM_24_BIT_PACKED:
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case AUDIO_FORMAT_PCM_32_BIT:
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return ENCODING_PCM_FLOAT;
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case AUDIO_FORMAT_AC3:
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return ENCODING_AC3;
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case AUDIO_FORMAT_E_AC3:
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return ENCODING_E_AC3;
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case AUDIO_FORMAT_DTS:
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return ENCODING_DTS;
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case AUDIO_FORMAT_DTS_HD:
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return ENCODING_DTS_HD;
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case AUDIO_FORMAT_MP3:
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return ENCODING_MP3;
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case AUDIO_FORMAT_AAC_LC:
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return ENCODING_AAC_LC;
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case AUDIO_FORMAT_AAC_HE_V1:
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return ENCODING_AAC_HE_V1;
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case AUDIO_FORMAT_AAC_HE_V2:
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return ENCODING_AAC_HE_V2;
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case AUDIO_FORMAT_IEC61937:
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return ENCODING_IEC61937;
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case AUDIO_FORMAT_DOLBY_TRUEHD:
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return ENCODING_DOLBY_TRUEHD;
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case AUDIO_FORMAT_AAC_ELD:
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return ENCODING_AAC_ELD;
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case AUDIO_FORMAT_AAC_XHE:
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return ENCODING_AAC_XHE;
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case AUDIO_FORMAT_AC4:
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return ENCODING_AC4;
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case AUDIO_FORMAT_E_AC3_JOC:
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return ENCODING_E_AC3_JOC;
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case AUDIO_FORMAT_MAT:
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case AUDIO_FORMAT_MAT_1_0:
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case AUDIO_FORMAT_MAT_2_0:
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case AUDIO_FORMAT_MAT_2_1:
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return ENCODING_DOLBY_MAT;
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case AUDIO_FORMAT_DEFAULT:
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return ENCODING_DEFAULT;
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default:
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return ENCODING_INVALID;
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}
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}
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// This function converts Java channel masks to a native channel mask.
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// validity should be checked with audio_is_output_channel().
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static inline audio_channel_mask_t nativeChannelMaskFromJavaChannelMasks(
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jint channelPositionMask, jint channelIndexMask)
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{
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// 0 is the java android.media.AudioFormat.CHANNEL_INVALID value
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if (channelIndexMask != 0) { // channel index mask takes priority
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// To convert to a native channel mask, the Java channel index mask
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// requires adding the index representation.
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return audio_channel_mask_from_representation_and_bits(
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AUDIO_CHANNEL_REPRESENTATION_INDEX,
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channelIndexMask);
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}
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// To convert to a native channel mask, the Java channel position mask
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// requires a shift by 2 to skip the two deprecated channel
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// configurations "default" and "mono".
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return (audio_channel_mask_t)((uint32_t)channelPositionMask >> 2);
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}
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static inline audio_channel_mask_t outChannelMaskToNative(int channelMask)
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{
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switch (channelMask) {
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case CHANNEL_OUT_DEFAULT:
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case CHANNEL_INVALID:
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return AUDIO_CHANNEL_NONE;
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default:
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return (audio_channel_mask_t)(channelMask>>2);
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}
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}
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static inline int outChannelMaskFromNative(audio_channel_mask_t nativeMask)
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{
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switch (nativeMask) {
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case AUDIO_CHANNEL_NONE:
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return CHANNEL_OUT_DEFAULT;
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default:
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return (int)nativeMask<<2;
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}
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}
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static inline audio_channel_mask_t inChannelMaskToNative(int channelMask)
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{
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return (audio_channel_mask_t)channelMask;
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}
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static inline int inChannelMaskFromNative(audio_channel_mask_t nativeMask)
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{
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return (int)nativeMask;
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}
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#endif // ANDROID_MEDIA_AUDIOFORMAT_H
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