IOProfile.cpp revision 322b4d25387a04c9afebe998326d005bbdf17ede 
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    : AudioPort(name, AUDIO_PORT_TYPE_MIX, role)
28{
29}
30
31IOProfile::~IOProfile()
32{
33}
34
35// checks if the IO profile is compatible with specified parameters.
36// Sampling rate, format and channel mask must be specified in order to
37// get a valid a match
38bool IOProfile::isCompatibleProfile(audio_devices_t device,
39                                    String8 address,
40                                    uint32_t samplingRate,
41                                    uint32_t *updatedSamplingRate,
42                                    audio_format_t format,
43                                    audio_channel_mask_t channelMask,
44                                    uint32_t flags) const
45{
46    const bool isPlaybackThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SOURCE;
47    const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK;
48    ALOG_ASSERT(isPlaybackThread != isRecordThread);
49
50
51    if (device != AUDIO_DEVICE_NONE) {
52        // just check types if multiple devices are selected
53        if (popcount(device & ~AUDIO_DEVICE_BIT_IN) > 1) {
54            if ((mSupportedDevices.types() & device) != device) {
55                return false;
56            }
57        } else if (mSupportedDevices.getDevice(device, address) == 0) {
58            return false;
59        }
60    }
61
62    if (samplingRate == 0) {
63         return false;
64    }
65    uint32_t myUpdatedSamplingRate = samplingRate;
66    if (isPlaybackThread && checkExactSamplingRate(samplingRate) != NO_ERROR) {
67         return false;
68    }
69    if (isRecordThread && checkCompatibleSamplingRate(samplingRate, &myUpdatedSamplingRate) !=
70            NO_ERROR) {
71         return false;
72    }
73
74    if (!audio_is_valid_format(format) || checkFormat(format) != NO_ERROR) {
75        return false;
76    }
77
78    if (isPlaybackThread && (!audio_is_output_channel(channelMask) ||
79            checkExactChannelMask(channelMask) != NO_ERROR)) {
80        return false;
81    }
82    if (isRecordThread && (!audio_is_input_channel(channelMask) ||
83            checkCompatibleChannelMask(channelMask) != NO_ERROR)) {
84        return false;
85    }
86
87    if (isPlaybackThread && (mFlags & 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 && ((mFlags ^ flags) &
95            ~AUDIO_INPUT_FLAG_FAST)) {
96        return false;
97    }
98
99    if (updatedSamplingRate != NULL) {
100        *updatedSamplingRate = myUpdatedSamplingRate;
101    }
102    return true;
103}
104
105void IOProfile::dump(int fd)
106{
107    const size_t SIZE = 256;
108    char buffer[SIZE];
109    String8 result;
110
111    AudioPort::dump(fd, 4);
112
113    snprintf(buffer, SIZE, "    - flags: 0x%04x\n", mFlags);
114    result.append(buffer);
115    snprintf(buffer, SIZE, "    - devices:\n");
116    result.append(buffer);
117    write(fd, result.string(), result.size());
118    for (size_t i = 0; i < mSupportedDevices.size(); i++) {
119        mSupportedDevices[i]->dump(fd, 6, i);
120    }
121}
122
123void IOProfile::log()
124{
125    const size_t SIZE = 256;
126    char buffer[SIZE];
127    String8 result;
128
129    ALOGV("    - sampling rates: ");
130    for (size_t i = 0; i < mSamplingRates.size(); i++) {
131        ALOGV("  %d", mSamplingRates[i]);
132    }
133
134    ALOGV("    - channel masks: ");
135    for (size_t i = 0; i < mChannelMasks.size(); i++) {
136        ALOGV("  0x%04x", mChannelMasks[i]);
137    }
138
139    ALOGV("    - formats: ");
140    for (size_t i = 0; i < mFormats.size(); i++) {
141        ALOGV("  0x%08x", mFormats[i]);
142    }
143
144    ALOGV("    - devices: 0x%04x\n", mSupportedDevices.types());
145    ALOGV("    - flags: 0x%04x\n", mFlags);
146}
147
148}; // namespace android
149