Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 | |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 17 | //#define LOG_NDEBUG 0 |
| 18 | #define LOG_TAG "UDPPusher" |
| 19 | #include <utils/Log.h> |
| 20 | |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 21 | #include "UDPPusher.h" |
| 22 | |
| 23 | #include <media/stagefright/foundation/ABuffer.h> |
| 24 | #include <media/stagefright/foundation/ADebug.h> |
| 25 | #include <media/stagefright/foundation/AMessage.h> |
| 26 | #include <utils/ByteOrder.h> |
| 27 | |
| 28 | #include <sys/socket.h> |
| 29 | |
| 30 | namespace android { |
| 31 | |
| 32 | UDPPusher::UDPPusher(const char *filename, unsigned port) |
| 33 | : mFile(fopen(filename, "rb")), |
| 34 | mFirstTimeMs(0), |
| 35 | mFirstTimeUs(0) { |
| 36 | CHECK(mFile != NULL); |
| 37 | |
| 38 | mSocket = socket(AF_INET, SOCK_DGRAM, 0); |
| 39 | |
| 40 | struct sockaddr_in addr; |
| 41 | memset(addr.sin_zero, 0, sizeof(addr.sin_zero)); |
| 42 | addr.sin_family = AF_INET; |
| 43 | addr.sin_addr.s_addr = INADDR_ANY; |
| 44 | addr.sin_port = 0; |
| 45 | |
| 46 | CHECK_EQ(0, bind(mSocket, (const struct sockaddr *)&addr, sizeof(addr))); |
| 47 | |
| 48 | memset(mRemoteAddr.sin_zero, 0, sizeof(mRemoteAddr.sin_zero)); |
| 49 | mRemoteAddr.sin_family = AF_INET; |
| 50 | mRemoteAddr.sin_addr.s_addr = INADDR_ANY; |
| 51 | mRemoteAddr.sin_port = htons(port); |
| 52 | } |
| 53 | |
| 54 | UDPPusher::~UDPPusher() { |
| 55 | close(mSocket); |
| 56 | mSocket = -1; |
| 57 | |
| 58 | fclose(mFile); |
| 59 | mFile = NULL; |
| 60 | } |
| 61 | |
| 62 | void UDPPusher::start() { |
| 63 | uint32_t timeMs; |
| 64 | CHECK_EQ(fread(&timeMs, 1, sizeof(timeMs), mFile), sizeof(timeMs)); |
| 65 | mFirstTimeMs = fromlel(timeMs); |
| 66 | mFirstTimeUs = ALooper::GetNowUs(); |
| 67 | |
| 68 | (new AMessage(kWhatPush, id()))->post(); |
| 69 | } |
| 70 | |
| 71 | bool UDPPusher::onPush() { |
| 72 | uint32_t length; |
| 73 | if (fread(&length, 1, sizeof(length), mFile) < sizeof(length)) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 74 | LOGI("No more data to push."); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 75 | return false; |
| 76 | } |
| 77 | |
| 78 | length = fromlel(length); |
| 79 | |
| 80 | CHECK_GT(length, 0u); |
| 81 | |
| 82 | sp<ABuffer> buffer = new ABuffer(length); |
| 83 | if (fread(buffer->data(), 1, length, mFile) < length) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 84 | LOGE("File truncated?."); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 85 | return false; |
| 86 | } |
| 87 | |
| 88 | ssize_t n = sendto( |
| 89 | mSocket, buffer->data(), buffer->size(), 0, |
| 90 | (const struct sockaddr *)&mRemoteAddr, sizeof(mRemoteAddr)); |
| 91 | |
| 92 | CHECK_EQ(n, (ssize_t)buffer->size()); |
| 93 | |
| 94 | uint32_t timeMs; |
| 95 | if (fread(&timeMs, 1, sizeof(timeMs), mFile) < sizeof(timeMs)) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 96 | LOGI("No more data to push."); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 97 | return false; |
| 98 | } |
| 99 | |
| 100 | timeMs = fromlel(timeMs); |
| 101 | CHECK_GE(timeMs, mFirstTimeMs); |
| 102 | |
| 103 | timeMs -= mFirstTimeMs; |
| 104 | int64_t whenUs = mFirstTimeUs + timeMs * 1000ll; |
| 105 | int64_t nowUs = ALooper::GetNowUs(); |
| 106 | (new AMessage(kWhatPush, id()))->post(whenUs - nowUs); |
| 107 | |
| 108 | return true; |
| 109 | } |
| 110 | |
| 111 | void UDPPusher::onMessageReceived(const sp<AMessage> &msg) { |
| 112 | switch (msg->what()) { |
| 113 | case kWhatPush: |
| 114 | { |
| 115 | if (!onPush() && !(ntohs(mRemoteAddr.sin_port) & 1)) { |
Andreas Huber | 6e3fa44 | 2010-09-21 13:13:15 -0700 | [diff] [blame] | 116 | LOGI("emulating BYE packet"); |
Andreas Huber | 57648e4 | 2010-08-04 10:14:30 -0700 | [diff] [blame] | 117 | |
| 118 | sp<ABuffer> buffer = new ABuffer(8); |
| 119 | uint8_t *data = buffer->data(); |
| 120 | *data++ = (2 << 6) | 1; |
| 121 | *data++ = 203; |
| 122 | *data++ = 0; |
| 123 | *data++ = 1; |
| 124 | *data++ = 0x8f; |
| 125 | *data++ = 0x49; |
| 126 | *data++ = 0xc0; |
| 127 | *data++ = 0xd0; |
| 128 | buffer->setRange(0, 8); |
| 129 | |
| 130 | struct sockaddr_in tmp = mRemoteAddr; |
| 131 | tmp.sin_port = htons(ntohs(mRemoteAddr.sin_port) | 1); |
| 132 | |
| 133 | ssize_t n = sendto( |
| 134 | mSocket, buffer->data(), buffer->size(), 0, |
| 135 | (const struct sockaddr *)&tmp, |
| 136 | sizeof(tmp)); |
| 137 | |
| 138 | CHECK_EQ(n, (ssize_t)buffer->size()); |
| 139 | } |
| 140 | break; |
| 141 | } |
| 142 | |
| 143 | default: |
| 144 | TRESPASS(); |
| 145 | break; |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | } // namespace android |
| 150 | |