1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "APM::IOProfile" 18//#define LOG_NDEBUG 0 19 20#include "IOProfile.h" 21#include "HwModule.h" 22#include "AudioGain.h" 23#include "TypeConverter.h" 24 25namespace android { 26 27// checks if the IO profile is compatible with specified parameters. 28// Sampling rate, format and channel mask must be specified in order to 29// get a valid a match 30bool IOProfile::isCompatibleProfile(audio_devices_t device, 31 String8 address, 32 uint32_t samplingRate, 33 uint32_t *updatedSamplingRate, 34 audio_format_t format, 35 audio_format_t *updatedFormat, 36 audio_channel_mask_t channelMask, 37 audio_channel_mask_t *updatedChannelMask, 38 uint32_t flags) const 39{ 40 const bool isPlaybackThread = 41 getType() == AUDIO_PORT_TYPE_MIX && getRole() == AUDIO_PORT_ROLE_SOURCE; 42 const bool isRecordThread = 43 getType() == AUDIO_PORT_TYPE_MIX && getRole() == AUDIO_PORT_ROLE_SINK; 44 ALOG_ASSERT(isPlaybackThread != isRecordThread); 45 46 47 if (device != AUDIO_DEVICE_NONE) { 48 // just check types if multiple devices are selected 49 if (popcount(device & ~AUDIO_DEVICE_BIT_IN) > 1) { 50 if ((mSupportedDevices.types() & device) != device) { 51 return false; 52 } 53 } else if (mSupportedDevices.getDevice(device, address) == 0) { 54 return false; 55 } 56 } 57 58 if (!audio_is_valid_format(format) || 59 (isPlaybackThread && (samplingRate == 0 || !audio_is_output_channel(channelMask))) || 60 (isRecordThread && (!audio_is_input_channel(channelMask)))) { 61 return false; 62 } 63 64 audio_format_t myUpdatedFormat = format; 65 audio_channel_mask_t myUpdatedChannelMask = channelMask; 66 uint32_t myUpdatedSamplingRate = samplingRate; 67 if (isRecordThread) 68 { 69 if (checkCompatibleAudioProfile( 70 myUpdatedSamplingRate, myUpdatedChannelMask, myUpdatedFormat) != NO_ERROR) { 71 return false; 72 } 73 } else { 74 if (checkExactAudioProfile(samplingRate, channelMask, format) != NO_ERROR) { 75 return false; 76 } 77 } 78 79 if (isPlaybackThread && (getFlags() & flags) != flags) { 80 return false; 81 } 82 // The only input flag that is allowed to be different is the fast flag. 83 // An existing fast stream is compatible with a normal track request. 84 // An existing normal stream is compatible with a fast track request, 85 // but the fast request will be denied by AudioFlinger and converted to normal track. 86 if (isRecordThread && ((getFlags() ^ flags) & 87 ~AUDIO_INPUT_FLAG_FAST)) { 88 return false; 89 } 90 91 if (updatedSamplingRate != NULL) { 92 *updatedSamplingRate = myUpdatedSamplingRate; 93 } 94 if (updatedFormat != NULL) { 95 *updatedFormat = myUpdatedFormat; 96 } 97 if (updatedChannelMask != NULL) { 98 *updatedChannelMask = myUpdatedChannelMask; 99 } 100 return true; 101} 102 103void IOProfile::dump(int fd) 104{ 105 const size_t SIZE = 256; 106 char buffer[SIZE]; 107 String8 result; 108 109 AudioPort::dump(fd, 4); 110 111 snprintf(buffer, SIZE, " - flags: 0x%04x\n", getFlags()); 112 result.append(buffer); 113 write(fd, result.string(), result.size()); 114 mSupportedDevices.dump(fd, String8("Supported"), 4, false); 115} 116 117void IOProfile::log() 118{ 119 // @TODO: forward log to AudioPort 120} 121 122}; // namespace android 123