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
25 namespace 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
isCompatibleProfile(audio_devices_t device,const String8 & address,uint32_t samplingRate,uint32_t * updatedSamplingRate,audio_format_t format,audio_format_t * updatedFormat,audio_channel_mask_t channelMask,audio_channel_mask_t * updatedChannelMask,uint32_t flags,bool exactMatchRequiredForInputFlags) const30 bool IOProfile::isCompatibleProfile(audio_devices_t device,
31 const 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 // FIXME type punning here
39 uint32_t flags,
40 bool exactMatchRequiredForInputFlags) const
41 {
42 const bool isPlaybackThread =
43 getType() == AUDIO_PORT_TYPE_MIX && getRole() == AUDIO_PORT_ROLE_SOURCE;
44 const bool isRecordThread =
45 getType() == AUDIO_PORT_TYPE_MIX && getRole() == AUDIO_PORT_ROLE_SINK;
46 ALOG_ASSERT(isPlaybackThread != isRecordThread);
47
48
49 if (device != AUDIO_DEVICE_NONE) {
50 // just check types if multiple devices are selected
51 if (popcount(device & ~AUDIO_DEVICE_BIT_IN) > 1) {
52 if ((mSupportedDevices.types() & device) != device) {
53 return false;
54 }
55 } else if (mSupportedDevices.getDevice(device, address) == 0) {
56 return false;
57 }
58 }
59
60 if (!audio_is_valid_format(format) ||
61 (isPlaybackThread && (samplingRate == 0 || !audio_is_output_channel(channelMask))) ||
62 (isRecordThread && (!audio_is_input_channel(channelMask)))) {
63 return false;
64 }
65
66 audio_format_t myUpdatedFormat = format;
67 audio_channel_mask_t myUpdatedChannelMask = channelMask;
68 uint32_t myUpdatedSamplingRate = samplingRate;
69 if (isRecordThread)
70 {
71 if (checkCompatibleAudioProfile(
72 myUpdatedSamplingRate, myUpdatedChannelMask, myUpdatedFormat) != NO_ERROR) {
73 return false;
74 }
75 } else {
76 const struct audio_port_config config = {
77 .config_mask = AUDIO_PORT_CONFIG_ALL & ~AUDIO_PORT_CONFIG_GAIN,
78 .sample_rate = samplingRate,
79 .channel_mask = channelMask,
80 .format = format,
81 };
82 if (checkExactAudioProfile(&config) != NO_ERROR) {
83 return false;
84 }
85 }
86
87 if (isPlaybackThread && (getFlags() & flags) != flags) {
88 return false;
89 }
90 // The only input flag that is allowed to be different is the fast flag.
91 // An existing fast stream is compatible with a normal track request.
92 // An existing normal stream is compatible with a fast track request,
93 // but the fast request will be denied by AudioFlinger and converted to normal track.
94 if (isRecordThread && ((getFlags() ^ flags) &
95 ~(exactMatchRequiredForInputFlags ? AUDIO_INPUT_FLAG_NONE : AUDIO_INPUT_FLAG_FAST))) {
96 return false;
97 }
98
99 if (updatedSamplingRate != NULL) {
100 *updatedSamplingRate = myUpdatedSamplingRate;
101 }
102 if (updatedFormat != NULL) {
103 *updatedFormat = myUpdatedFormat;
104 }
105 if (updatedChannelMask != NULL) {
106 *updatedChannelMask = myUpdatedChannelMask;
107 }
108 return true;
109 }
110
dump(int fd)111 void IOProfile::dump(int fd)
112 {
113 const size_t SIZE = 256;
114 char buffer[SIZE];
115 String8 result;
116
117 AudioPort::dump(fd, 4);
118
119 snprintf(buffer, SIZE, " - flags: 0x%04x", getFlags());
120 result.append(buffer);
121 std::string flagsLiteral;
122 if (getRole() == AUDIO_PORT_ROLE_SINK) {
123 InputFlagConverter::maskToString(getFlags(), flagsLiteral);
124 } else if (getRole() == AUDIO_PORT_ROLE_SOURCE) {
125 OutputFlagConverter::maskToString(getFlags(), flagsLiteral);
126 }
127 if (!flagsLiteral.empty()) {
128 result.appendFormat(" (%s)", flagsLiteral.c_str());
129 }
130 result.append("\n");
131 write(fd, result.string(), result.size());
132 mSupportedDevices.dump(fd, String8("Supported"), 4, false);
133
134 result.clear();
135 snprintf(buffer, SIZE, "\n - maxOpenCount: %u - curOpenCount: %u\n",
136 maxOpenCount, curOpenCount);
137 result.append(buffer);
138 snprintf(buffer, SIZE, " - maxActiveCount: %u - curActiveCount: %u\n",
139 maxActiveCount, curActiveCount);
140 result.append(buffer);
141
142 write(fd, result.string(), result.size());
143 }
144
log()145 void IOProfile::log()
146 {
147 // @TODO: forward log to AudioPort
148 }
149
150 } // namespace android
151