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 */ 45 AudioEndpointParcelable::AudioEndpointParcelable() {} 46 47 AudioEndpointParcelable::~AudioEndpointParcelable() {} 48 49 /** 50 * Add the file descriptor to the table. 51 * @return index in table or negative error 52 */ 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 */ 66 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 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 } 116 117 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 } 129 130 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 } 138 139 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 } 146 147 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