IOProfile.cpp revision 53615e29c99c5e9d2ca77aaefd7bf5c770513120 
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
24namespace android {
25
26IOProfile::IOProfile(const String8& name, audio_port_role_t role,
27                                         const sp<HwModule>& module)
28    : AudioPort(name, AUDIO_PORT_TYPE_MIX, role, module)
29{
30}
31
32IOProfile::~IOProfile()
33{
34}
35
36// checks if the IO profile is compatible with specified parameters.
37// Sampling rate, format and channel mask must be specified in order to
38// get a valid a match
39bool IOProfile::isCompatibleProfile(audio_devices_t device,
40                                    String8 address,
41                                    uint32_t samplingRate,
42                                    uint32_t *updatedSamplingRate,
43                                    audio_format_t format,
44                                    audio_channel_mask_t channelMask,
45                                    uint32_t flags) const
46{
47    const bool isPlaybackThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SOURCE;
48    const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK;
49    ALOG_ASSERT(isPlaybackThread != isRecordThread);
50
51
52    if (device != AUDIO_DEVICE_NONE) {
53        // just check types if multiple devices are selected
54        if (popcount(device & ~AUDIO_DEVICE_BIT_IN) > 1) {
55            if ((mSupportedDevices.types() & device) != device) {
56                return false;
57            }
58        } else if (mSupportedDevices.getDevice(device, address) == 0) {
59            return false;
60        }
61    }
62
63    if (samplingRate == 0) {
64         return false;
65    }
66    uint32_t myUpdatedSamplingRate = samplingRate;
67    if (isPlaybackThread && checkExactSamplingRate(samplingRate) != NO_ERROR) {
68         return false;
69    }
70    if (isRecordThread && checkCompatibleSamplingRate(samplingRate, &myUpdatedSamplingRate) !=
71            NO_ERROR) {
72         return false;
73    }
74
75    if (!audio_is_valid_format(format) || checkFormat(format) != NO_ERROR) {
76        return false;
77    }
78
79    if (isPlaybackThread && (!audio_is_output_channel(channelMask) ||
80            checkExactChannelMask(channelMask) != NO_ERROR)) {
81        return false;
82    }
83    if (isRecordThread && (!audio_is_input_channel(channelMask) ||
84            checkCompatibleChannelMask(channelMask) != NO_ERROR)) {
85        return false;
86    }
87
88    if (isPlaybackThread && (mFlags & flags) != flags) {
89        return false;
90    }
91    // The only input flag that is allowed to be different is the fast flag.
92    // An existing fast stream is compatible with a normal track request.
93    // An existing normal stream is compatible with a fast track request,
94    // but the fast request will be denied by AudioFlinger and converted to normal track.
95    if (isRecordThread && ((mFlags ^ flags) &
96            ~AUDIO_INPUT_FLAG_FAST)) {
97        return false;
98    }
99
100    if (updatedSamplingRate != NULL) {
101        *updatedSamplingRate = myUpdatedSamplingRate;
102    }
103    return true;
104}
105
106void IOProfile::dump(int fd)
107{
108    const size_t SIZE = 256;
109    char buffer[SIZE];
110    String8 result;
111
112    AudioPort::dump(fd, 4);
113
114    snprintf(buffer, SIZE, "    - flags: 0x%04x\n", mFlags);
115    result.append(buffer);
116    snprintf(buffer, SIZE, "    - devices:\n");
117    result.append(buffer);
118    write(fd, result.string(), result.size());
119    for (size_t i = 0; i < mSupportedDevices.size(); i++) {
120        mSupportedDevices[i]->dump(fd, 6, i);
121    }
122}
123
124void IOProfile::log()
125{
126    const size_t SIZE = 256;
127    char buffer[SIZE];
128    String8 result;
129
130    ALOGV("    - sampling rates: ");
131    for (size_t i = 0; i < mSamplingRates.size(); i++) {
132        ALOGV("  %d", mSamplingRates[i]);
133    }
134
135    ALOGV("    - channel masks: ");
136    for (size_t i = 0; i < mChannelMasks.size(); i++) {
137        ALOGV("  0x%04x", mChannelMasks[i]);
138    }
139
140    ALOGV("    - formats: ");
141    for (size_t i = 0; i < mFormats.size(); i++) {
142        ALOGV("  0x%08x", mFormats[i]);
143    }
144
145    ALOGV("    - devices: 0x%04x\n", mSupportedDevices.types());
146    ALOGV("    - flags: 0x%04x\n", mFlags);
147}
148
149}; // namespace android
150