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