IOProfile.cpp revision f129b03fa583d4cc26fd9c9171b8fb3b0ed8d4f4 
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_format_t *updatedFormat,
44                                    audio_channel_mask_t channelMask,
45                                    audio_channel_mask_t *updatedChannelMask,
46                                    uint32_t flags) const
47{
48    const bool isPlaybackThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SOURCE;
49    const bool isRecordThread = mType == AUDIO_PORT_TYPE_MIX && mRole == AUDIO_PORT_ROLE_SINK;
50    ALOG_ASSERT(isPlaybackThread != isRecordThread);
51
52
53    if (device != AUDIO_DEVICE_NONE) {
54        // just check types if multiple devices are selected
55        if (popcount(device & ~AUDIO_DEVICE_BIT_IN) > 1) {
56            if ((mSupportedDevices.types() & device) != device) {
57                return false;
58            }
59        } else if (mSupportedDevices.getDevice(device, address) == 0) {
60            return false;
61        }
62    }
63
64    if (samplingRate == 0) {
65         return false;
66    }
67    uint32_t myUpdatedSamplingRate = samplingRate;
68    if (isPlaybackThread && checkExactSamplingRate(samplingRate) != NO_ERROR) {
69         return false;
70    }
71    if (isRecordThread && checkCompatibleSamplingRate(samplingRate, &myUpdatedSamplingRate) !=
72            NO_ERROR) {
73         return false;
74    }
75
76    if (!audio_is_valid_format(format)) {
77        return false;
78    }
79    if (isPlaybackThread && checkExactFormat(format) != NO_ERROR) {
80        return false;
81    }
82    audio_format_t myUpdatedFormat = format;
83    if (isRecordThread && checkCompatibleFormat(format, &myUpdatedFormat) != NO_ERROR) {
84        return false;
85    }
86
87    if (isPlaybackThread && (!audio_is_output_channel(channelMask) ||
88            checkExactChannelMask(channelMask) != NO_ERROR)) {
89        return false;
90    }
91    audio_channel_mask_t myUpdatedChannelMask = channelMask;
92    if (isRecordThread && (!audio_is_input_channel(channelMask) ||
93            checkCompatibleChannelMask(channelMask, &myUpdatedChannelMask) != NO_ERROR)) {
94        return false;
95    }
96
97    if (isPlaybackThread && (mFlags & flags) != flags) {
98        return false;
99    }
100    // The only input flag that is allowed to be different is the fast flag.
101    // An existing fast stream is compatible with a normal track request.
102    // An existing normal stream is compatible with a fast track request,
103    // but the fast request will be denied by AudioFlinger and converted to normal track.
104    if (isRecordThread && ((mFlags ^ flags) &
105            ~AUDIO_INPUT_FLAG_FAST)) {
106        return false;
107    }
108
109    if (updatedSamplingRate != NULL) {
110        *updatedSamplingRate = myUpdatedSamplingRate;
111    }
112    if (updatedFormat != NULL) {
113        *updatedFormat = myUpdatedFormat;
114    }
115    if (updatedChannelMask != NULL) {
116        *updatedChannelMask = myUpdatedChannelMask;
117    }
118    return true;
119}
120
121void IOProfile::dump(int fd)
122{
123    const size_t SIZE = 256;
124    char buffer[SIZE];
125    String8 result;
126
127    AudioPort::dump(fd, 4);
128
129    snprintf(buffer, SIZE, "    - flags: 0x%04x\n", mFlags);
130    result.append(buffer);
131    snprintf(buffer, SIZE, "    - devices:\n");
132    result.append(buffer);
133    write(fd, result.string(), result.size());
134    for (size_t i = 0; i < mSupportedDevices.size(); i++) {
135        mSupportedDevices[i]->dump(fd, 6, i);
136    }
137}
138
139void IOProfile::log()
140{
141    const size_t SIZE = 256;
142    char buffer[SIZE];
143    String8 result;
144
145    ALOGV("    - sampling rates: ");
146    for (size_t i = 0; i < mSamplingRates.size(); i++) {
147        ALOGV("  %d", mSamplingRates[i]);
148    }
149
150    ALOGV("    - channel masks: ");
151    for (size_t i = 0; i < mChannelMasks.size(); i++) {
152        ALOGV("  0x%04x", mChannelMasks[i]);
153    }
154
155    ALOGV("    - formats: ");
156    for (size_t i = 0; i < mFormats.size(); i++) {
157        ALOGV("  0x%08x", mFormats[i]);
158    }
159
160    ALOGV("    - devices: 0x%04x\n", mSupportedDevices.types());
161    ALOGV("    - flags: 0x%04x\n", mFlags);
162}
163
164}; // namespace android
165