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Diffstat (limited to 'media/libstagefright/http/MediaHTTP.cpp')
-rw-r--r-- | media/libstagefright/http/MediaHTTP.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/media/libstagefright/http/MediaHTTP.cpp b/media/libstagefright/http/MediaHTTP.cpp new file mode 100644 index 0000000..157d967 --- /dev/null +++ b/media/libstagefright/http/MediaHTTP.cpp @@ -0,0 +1,201 @@ +/* + * 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() { + 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 |