blob: 5c685a13f5418724cbd85fc17711e4efbe48c8e8 [file] [log] [blame]
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "UDPPusher"
#include <utils/Log.h>
#include "UDPPusher.h"
#include <media/stagefright/foundation/ABuffer.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/AMessage.h>
#include <utils/ByteOrder.h>
#include <sys/socket.h>
namespace android {
UDPPusher::UDPPusher(const char *filename, unsigned port)
: mFile(fopen(filename, "rb")),
mFirstTimeMs(0),
mFirstTimeUs(0) {
CHECK(mFile != NULL);
mSocket = socket(AF_INET, SOCK_DGRAM, 0);
struct sockaddr_in addr;
memset(addr.sin_zero, 0, sizeof(addr.sin_zero));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_port = 0;
CHECK_EQ(0, bind(mSocket, (const struct sockaddr *)&addr, sizeof(addr)));
memset(mRemoteAddr.sin_zero, 0, sizeof(mRemoteAddr.sin_zero));
mRemoteAddr.sin_family = AF_INET;
mRemoteAddr.sin_addr.s_addr = INADDR_ANY;
mRemoteAddr.sin_port = htons(port);
}
UDPPusher::~UDPPusher() {
close(mSocket);
mSocket = -1;
fclose(mFile);
mFile = NULL;
}
void UDPPusher::start() {
uint32_t timeMs;
CHECK_EQ(fread(&timeMs, 1, sizeof(timeMs), mFile), sizeof(timeMs));
mFirstTimeMs = fromlel(timeMs);
mFirstTimeUs = ALooper::GetNowUs();
(new AMessage(kWhatPush, this))->post();
}
bool UDPPusher::onPush() {
uint32_t length;
if (fread(&length, 1, sizeof(length), mFile) < sizeof(length)) {
ALOGI("No more data to push.");
return false;
}
length = fromlel(length);
CHECK_GT(length, 0u);
sp<ABuffer> buffer = new ABuffer(length);
if (fread(buffer->data(), 1, length, mFile) < length) {
ALOGE("File truncated?.");
return false;
}
ssize_t n = sendto(
mSocket, buffer->data(), buffer->size(), 0,
(const struct sockaddr *)&mRemoteAddr, sizeof(mRemoteAddr));
CHECK_EQ(n, (ssize_t)buffer->size());
uint32_t timeMs;
if (fread(&timeMs, 1, sizeof(timeMs), mFile) < sizeof(timeMs)) {
ALOGI("No more data to push.");
return false;
}
timeMs = fromlel(timeMs);
CHECK_GE(timeMs, mFirstTimeMs);
timeMs -= mFirstTimeMs;
int64_t whenUs = mFirstTimeUs + timeMs * 1000ll;
int64_t nowUs = ALooper::GetNowUs();
(new AMessage(kWhatPush, this))->post(whenUs - nowUs);
return true;
}
void UDPPusher::onMessageReceived(const sp<AMessage> &msg) {
switch (msg->what()) {
case kWhatPush:
{
if (!onPush() && !(ntohs(mRemoteAddr.sin_port) & 1)) {
ALOGI("emulating BYE packet");
sp<ABuffer> buffer = new ABuffer(8);
uint8_t *data = buffer->data();
*data++ = (2 << 6) | 1;
*data++ = 203;
*data++ = 0;
*data++ = 1;
*data++ = 0x8f;
*data++ = 0x49;
*data++ = 0xc0;
*data++ = 0xd0;
buffer->setRange(0, 8);
struct sockaddr_in tmp = mRemoteAddr;
tmp.sin_port = htons(ntohs(mRemoteAddr.sin_port) | 1);
ssize_t n = sendto(
mSocket, buffer->data(), buffer->size(), 0,
(const struct sockaddr *)&tmp,
sizeof(tmp));
CHECK_EQ(n, (ssize_t)buffer->size());
}
break;
}
default:
TRESPASS();
break;
}
}
} // namespace android