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104 lines
2.9 KiB
104 lines
2.9 KiB
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef DATA_SOURCE_H_
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#define DATA_SOURCE_H_
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#include <sys/types.h>
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#include <android/IDataSource.h>
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#include <media/stagefright/MediaErrors.h>
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#include <media/stagefright/DataSourceBase.h>
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#include <media/MediaExtractorPluginApi.h>
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#include <utils/Errors.h>
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#include <utils/RefBase.h>
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#include <utils/threads.h>
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namespace android {
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class String8;
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class DataSource : public DataSourceBase, public virtual RefBase {
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public:
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DataSource() : mWrapper(NULL) {}
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// returns a pointer to IDataSource if it is wrapped.
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virtual sp<IDataSource> getIDataSource() const {
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return nullptr;
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}
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virtual String8 toString() {
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return String8("<unspecified>");
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}
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virtual status_t reconnectAtOffset(off64_t /*offset*/) {
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return ERROR_UNSUPPORTED;
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}
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////////////////////////////////////////////////////////////////////////////
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virtual String8 getUri() {
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return String8();
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}
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virtual bool getUri(char *uriString, size_t bufferSize) final {
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int ret = snprintf(uriString, bufferSize, "%s", getUri().c_str());
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return ret >= 0 && static_cast<size_t>(ret) < bufferSize;
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}
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virtual String8 getMIMEType() const {
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return String8("application/octet-stream");
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}
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CDataSource *wrap() {
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if (mWrapper) {
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return mWrapper;
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}
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mWrapper = new CDataSource();
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mWrapper->handle = this;
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mWrapper->readAt = [](void *handle, off64_t offset, void *data, size_t size) -> ssize_t {
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return ((DataSource*)handle)->readAt(offset, data, size);
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};
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mWrapper->getSize = [](void *handle, off64_t *size) -> status_t {
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return ((DataSource*)handle)->getSize(size);
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};
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mWrapper->flags = [](void *handle) -> uint32_t {
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return ((DataSource*)handle)->flags();
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};
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mWrapper->getUri = [](void *handle, char *uriString, size_t bufferSize) -> bool {
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return ((DataSource*)handle)->getUri(uriString, bufferSize);
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};
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return mWrapper;
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}
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protected:
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virtual ~DataSource() {
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delete mWrapper;
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}
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private:
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CDataSource *mWrapper;
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DataSource(const DataSource &);
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DataSource &operator=(const DataSource &);
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};
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} // namespace android
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#endif // DATA_SOURCE_H_
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