1 /*
2 * Copyright 2016 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 "AudioEndpointParcelable"
18 //#define LOG_NDEBUG 0
19 #include <utils/Log.h>
20
21 #include <stdint.h>
22
23 #include <binder/Parcel.h>
24 #include <binder/Parcelable.h>
25 #include <utility/AAudioUtilities.h>
26
27 #include "binding/AAudioServiceDefinitions.h"
28 #include "binding/RingBufferParcelable.h"
29 #include "binding/AudioEndpointParcelable.h"
30
31 using android::base::unique_fd;
32 using android::NO_ERROR;
33 using android::status_t;
34 using android::Parcel;
35 using android::Parcelable;
36
37 using namespace aaudio;
38
39 /**
40 * Container for information about the message queues plus
41 * general stream information needed by AAudio clients.
42 * It contains no addresses, just sizes, offsets and file descriptors for
43 * shared memory that can be passed through Binder.
44 */
AudioEndpointParcelable()45 AudioEndpointParcelable::AudioEndpointParcelable() {}
46
~AudioEndpointParcelable()47 AudioEndpointParcelable::~AudioEndpointParcelable() {}
48
49 /**
50 * Add the file descriptor to the table.
51 * @return index in table or negative error
52 */
addFileDescriptor(const unique_fd & fd,int32_t sizeInBytes)53 int32_t AudioEndpointParcelable::addFileDescriptor(const unique_fd& fd,
54 int32_t sizeInBytes) {
55 if (mNumSharedMemories >= MAX_SHARED_MEMORIES) {
56 return AAUDIO_ERROR_OUT_OF_RANGE;
57 }
58 int32_t index = mNumSharedMemories++;
59 mSharedMemories[index].setup(fd, sizeInBytes);
60 return index;
61 }
62
63 /**
64 * The read and write must be symmetric.
65 */
writeToParcel(Parcel * parcel) const66 status_t AudioEndpointParcelable::writeToParcel(Parcel* parcel) const {
67 status_t status = AAudioConvert_aaudioToAndroidStatus(validate());
68 if (status != NO_ERROR) goto error;
69
70 status = parcel->writeInt32(mNumSharedMemories);
71 if (status != NO_ERROR) goto error;
72
73 for (int i = 0; i < mNumSharedMemories; i++) {
74 status = mSharedMemories[i].writeToParcel(parcel);
75 if (status != NO_ERROR) goto error;
76 }
77 status = mUpMessageQueueParcelable.writeToParcel(parcel);
78 if (status != NO_ERROR) goto error;
79 status = mDownMessageQueueParcelable.writeToParcel(parcel);
80 if (status != NO_ERROR) goto error;
81 status = mUpDataQueueParcelable.writeToParcel(parcel);
82 if (status != NO_ERROR) goto error;
83 status = mDownDataQueueParcelable.writeToParcel(parcel);
84 if (status != NO_ERROR) goto error;
85
86 return NO_ERROR;
87
88 error:
89 ALOGE("%s returning %d", __func__, status);
90 return status;
91 }
92
readFromParcel(const Parcel * parcel)93 status_t AudioEndpointParcelable::readFromParcel(const Parcel* parcel) {
94 status_t status = parcel->readInt32(&mNumSharedMemories);
95 if (status != NO_ERROR) goto error;
96
97 for (int i = 0; i < mNumSharedMemories; i++) {
98 mSharedMemories[i].readFromParcel(parcel);
99 if (status != NO_ERROR) goto error;
100 }
101 status = mUpMessageQueueParcelable.readFromParcel(parcel);
102 if (status != NO_ERROR) goto error;
103 status = mDownMessageQueueParcelable.readFromParcel(parcel);
104 if (status != NO_ERROR) goto error;
105 status = mUpDataQueueParcelable.readFromParcel(parcel);
106 if (status != NO_ERROR) goto error;
107 status = mDownDataQueueParcelable.readFromParcel(parcel);
108 if (status != NO_ERROR) goto error;
109
110 return AAudioConvert_aaudioToAndroidStatus(validate());
111
112 error:
113 ALOGE("%s returning %d", __func__, status);
114 return status;
115 }
116
resolve(EndpointDescriptor * descriptor)117 aaudio_result_t AudioEndpointParcelable::resolve(EndpointDescriptor *descriptor) {
118 aaudio_result_t result = mUpMessageQueueParcelable.resolve(mSharedMemories,
119 &descriptor->upMessageQueueDescriptor);
120 if (result != AAUDIO_OK) return result;
121 result = mDownMessageQueueParcelable.resolve(mSharedMemories,
122 &descriptor->downMessageQueueDescriptor);
123 if (result != AAUDIO_OK) return result;
124
125 result = mDownDataQueueParcelable.resolve(mSharedMemories,
126 &descriptor->dataQueueDescriptor);
127 return result;
128 }
129
close()130 aaudio_result_t AudioEndpointParcelable::close() {
131 int err = 0;
132 for (int i = 0; i < mNumSharedMemories; i++) {
133 int lastErr = mSharedMemories[i].close();
134 if (lastErr < 0) err = lastErr;
135 }
136 return AAudioConvert_androidToAAudioResult(err);
137 }
138
validate() const139 aaudio_result_t AudioEndpointParcelable::validate() const {
140 if (mNumSharedMemories < 0 || mNumSharedMemories >= MAX_SHARED_MEMORIES) {
141 ALOGE("invalid mNumSharedMemories = %d", mNumSharedMemories);
142 return AAUDIO_ERROR_INTERNAL;
143 }
144 return AAUDIO_OK;
145 }
146
dump()147 void AudioEndpointParcelable::dump() {
148 ALOGD("======================================= BEGIN");
149 ALOGD("mNumSharedMemories = %d", mNumSharedMemories);
150 for (int i = 0; i < mNumSharedMemories; i++) {
151 mSharedMemories[i].dump();
152 }
153 ALOGD("mUpMessageQueueParcelable =========");
154 mUpMessageQueueParcelable.dump();
155 ALOGD("mDownMessageQueueParcelable =======");
156 mDownMessageQueueParcelable.dump();
157 ALOGD("mUpDataQueueParcelable ============");
158 mUpDataQueueParcelable.dump();
159 ALOGD("mDownDataQueueParcelable ==========");
160 mDownDataQueueParcelable.dump();
161 ALOGD("======================================= END");
162 }
163
164