| /* |
| * 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 AUDIO_POLICY_HELPER_H_ |
| #define AUDIO_POLICY_HELPER_H_ |
| |
| #include <system/audio.h> |
| |
| static audio_stream_type_t audio_attributes_to_stream_type(const audio_attributes_t *attr) |
| { |
| // flags to stream type mapping |
| if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) { |
| return AUDIO_STREAM_ENFORCED_AUDIBLE; |
| } |
| if ((attr->flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) { |
| return AUDIO_STREAM_BLUETOOTH_SCO; |
| } |
| |
| // usage to stream type mapping |
| switch (attr->usage) { |
| case AUDIO_USAGE_MEDIA: |
| case AUDIO_USAGE_GAME: |
| case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY: |
| case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE: |
| return AUDIO_STREAM_MUSIC; |
| case AUDIO_USAGE_ASSISTANCE_SONIFICATION: |
| return AUDIO_STREAM_SYSTEM; |
| case AUDIO_USAGE_VOICE_COMMUNICATION: |
| return AUDIO_STREAM_VOICE_CALL; |
| |
| case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING: |
| return AUDIO_STREAM_DTMF; |
| |
| case AUDIO_USAGE_ALARM: |
| return AUDIO_STREAM_ALARM; |
| case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE: |
| return AUDIO_STREAM_RING; |
| |
| case AUDIO_USAGE_NOTIFICATION: |
| case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST: |
| case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT: |
| case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED: |
| case AUDIO_USAGE_NOTIFICATION_EVENT: |
| return AUDIO_STREAM_NOTIFICATION; |
| |
| case AUDIO_USAGE_UNKNOWN: |
| default: |
| return AUDIO_STREAM_MUSIC; |
| } |
| } |
| |
| static void stream_type_to_audio_attributes(audio_stream_type_t streamType, |
| audio_attributes_t *attr) { |
| memset(attr, 0, sizeof(audio_attributes_t)); |
| |
| switch (streamType) { |
| case AUDIO_STREAM_DEFAULT: |
| case AUDIO_STREAM_MUSIC: |
| attr->content_type = AUDIO_CONTENT_TYPE_MUSIC; |
| attr->usage = AUDIO_USAGE_MEDIA; |
| break; |
| case AUDIO_STREAM_VOICE_CALL: |
| attr->content_type = AUDIO_CONTENT_TYPE_SPEECH; |
| attr->usage = AUDIO_USAGE_VOICE_COMMUNICATION; |
| break; |
| case AUDIO_STREAM_ENFORCED_AUDIBLE: |
| attr->flags |= AUDIO_FLAG_AUDIBILITY_ENFORCED; |
| // intended fall through, attributes in common with STREAM_SYSTEM |
| case AUDIO_STREAM_SYSTEM: |
| attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION; |
| attr->usage = AUDIO_USAGE_ASSISTANCE_SONIFICATION; |
| break; |
| case AUDIO_STREAM_RING: |
| attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION; |
| attr->usage = AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE; |
| break; |
| case AUDIO_STREAM_ALARM: |
| attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION; |
| attr->usage = AUDIO_USAGE_ALARM; |
| break; |
| case AUDIO_STREAM_NOTIFICATION: |
| attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION; |
| attr->usage = AUDIO_USAGE_NOTIFICATION; |
| break; |
| case AUDIO_STREAM_BLUETOOTH_SCO: |
| attr->content_type = AUDIO_CONTENT_TYPE_SPEECH; |
| attr->usage = AUDIO_USAGE_VOICE_COMMUNICATION; |
| attr->flags |= AUDIO_FLAG_SCO; |
| break; |
| case AUDIO_STREAM_DTMF: |
| attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION; |
| attr->usage = AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING; |
| break; |
| case AUDIO_STREAM_TTS: |
| attr->content_type = AUDIO_CONTENT_TYPE_SPEECH; |
| attr->usage = AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY; |
| break; |
| default: |
| ALOGE("invalid stream type %d when converting to attributes", streamType); |
| } |
| } |
| |
| #endif //AUDIO_POLICY_HELPER_H_ |