1 // Copyright (C) 2021 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "BusOutputStream.h"
16
17 #include <android-base/logging.h>
18 #include <system/audio.h>
19
20 namespace audio_proxy::service {
21
BusOutputStream(const std::string & address,const AidlAudioConfig & config,int32_t flags)22 BusOutputStream::BusOutputStream(const std::string& address,
23 const AidlAudioConfig& config, int32_t flags)
24 : mAddress(address), mConfig(config), mFlags(flags) {}
25 BusOutputStream::~BusOutputStream() = default;
26
getAddress() const27 const std::string& BusOutputStream::getAddress() const { return mAddress; }
getConfig() const28 const AidlAudioConfig& BusOutputStream::getConfig() const { return mConfig; }
getFlags() const29 int32_t BusOutputStream::getFlags() const { return mFlags; }
30
getFrameSize() const31 int BusOutputStream::getFrameSize() const {
32 audio_format_t format = static_cast<audio_format_t>(mConfig.format);
33
34 if (!audio_has_proportional_frames(format)) {
35 return sizeof(int8_t);
36 }
37
38 size_t channelSampleSize = audio_bytes_per_sample(format);
39 return audio_channel_count_from_out_mask(
40 static_cast<audio_channel_mask_t>(mConfig.channelMask)) *
41 channelSampleSize;
42 }
43
prepareForWriting(uint32_t frameSize,uint32_t frameCount)44 bool BusOutputStream::prepareForWriting(uint32_t frameSize,
45 uint32_t frameCount) {
46 DCHECK_EQ(mWritingFrameSize, 0);
47 DCHECK_EQ(mWritingFrameCount, 0);
48
49 if (!prepareForWritingImpl(frameSize, frameCount)) {
50 return false;
51 }
52
53 mWritingFrameSize = frameSize;
54 mWritingFrameCount = frameCount;
55 return true;
56 }
57
getWritingFrameSize() const58 uint32_t BusOutputStream::getWritingFrameSize() const {
59 return mWritingFrameSize;
60 }
61
getWritingFrameCount() const62 uint32_t BusOutputStream::getWritingFrameCount() const {
63 return mWritingFrameCount;
64 }
65
66 } // namespace audio_proxy::service