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/*
* Copyright (C) 2013 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 "MediaHTTP"
#include <utils/Log.h>
#include <media/stagefright/MediaHTTP.h>
#include <binder/IServiceManager.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/ALooper.h>
#include <media/stagefright/Utils.h>
#include <media/IMediaHTTPConnection.h>
namespace android {
MediaHTTP::MediaHTTP(const sp<IMediaHTTPConnection> &conn)
: mInitCheck(NO_INIT),
mHTTPConnection(conn),
mCachedSizeValid(false),
mCachedSize(0ll),
mDrmManagerClient(NULL) {
mInitCheck = OK;
}
MediaHTTP::~MediaHTTP() {
clearDRMState_l();
}
status_t MediaHTTP::connect(
const char *uri,
const KeyedVector<String8, String8> *headers,
off64_t /* offset */) {
if (mInitCheck != OK) {
return mInitCheck;
}
KeyedVector<String8, String8> extHeaders;
if (headers != NULL) {
extHeaders = *headers;
}
extHeaders.add(String8("User-Agent"), String8(MakeUserAgent().c_str()));
bool success = mHTTPConnection->connect(uri, &extHeaders);
mLastHeaders = extHeaders;
mLastURI = uri;
mCachedSizeValid = false;
return success ? OK : UNKNOWN_ERROR;
}
void MediaHTTP::disconnect() {
if (mInitCheck != OK) {
return;
}
mHTTPConnection->disconnect();
}
status_t MediaHTTP::initCheck() const {
return mInitCheck;
}
ssize_t MediaHTTP::readAt(off64_t offset, void *data, size_t size) {
if (mInitCheck != OK) {
return mInitCheck;
}
int64_t startTimeUs = ALooper::GetNowUs();
size_t numBytesRead = 0;
while (numBytesRead < size) {
size_t copy = size - numBytesRead;
if (copy > 64 * 1024) {
// limit the buffer sizes transferred across binder boundaries
// to avoid spurious transaction failures.
copy = 64 * 1024;
}
ssize_t n = mHTTPConnection->readAt(
offset + numBytesRead, (uint8_t *)data + numBytesRead, copy);
if (n < 0) {
return n;
} else if (n == 0) {
break;
}
numBytesRead += n;
}
int64_t delayUs = ALooper::GetNowUs() - startTimeUs;
addBandwidthMeasurement(numBytesRead, delayUs);
return numBytesRead;
}
status_t MediaHTTP::getSize(off64_t *size) {
if (mInitCheck != OK) {
return mInitCheck;
}
// Caching the returned size so that it stays valid even after a
// disconnect. NuCachedSource2 relies on this.
if (!mCachedSizeValid) {
mCachedSize = mHTTPConnection->getSize();
mCachedSizeValid = true;
}
*size = mCachedSize;
return *size < 0 ? *size : OK;
}
uint32_t MediaHTTP::flags() {
return kWantsPrefetching | kIsHTTPBasedSource;
}
status_t MediaHTTP::reconnectAtOffset(off64_t offset) {
return connect(mLastURI.c_str(), &mLastHeaders, offset);
}
// DRM...
sp<DecryptHandle> MediaHTTP::DrmInitialization(const char* mime) {
if (mDrmManagerClient == NULL) {
mDrmManagerClient = new DrmManagerClient();
}
if (mDrmManagerClient == NULL) {
return NULL;
}
if (mDecryptHandle == NULL) {
mDecryptHandle = mDrmManagerClient->openDecryptSession(
String8(mLastURI.c_str()), mime);
}
if (mDecryptHandle == NULL) {
delete mDrmManagerClient;
mDrmManagerClient = NULL;
}
return mDecryptHandle;
}
void MediaHTTP::getDrmInfo(
sp<DecryptHandle> &handle, DrmManagerClient **client) {
handle = mDecryptHandle;
*client = mDrmManagerClient;
}
String8 MediaHTTP::getUri() {
String8 uri;
if (OK == mHTTPConnection->getUri(&uri)) {
return uri;
}
return String8(mLastURI.c_str());
}
String8 MediaHTTP::getMIMEType() const {
if (mInitCheck != OK) {
return String8("application/octet-stream");
}
String8 mimeType;
status_t err = mHTTPConnection->getMIMEType(&mimeType);
if (err != OK) {
return String8("application/octet-stream");
}
return mimeType;
}
void MediaHTTP::clearDRMState_l() {
if (mDecryptHandle != NULL) {
// To release mDecryptHandle
CHECK(mDrmManagerClient);
mDrmManagerClient->closeDecryptSession(mDecryptHandle);
mDecryptHandle = NULL;
}
}
} // namespace android
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