DataSource.h revision ec77122351b4e78c1fe5b60a208f76baf8c67591
120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber/* 220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Copyright (C) 2009 The Android Open Source Project 320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * you may not use this file except in compliance with the License. 620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * You may obtain a copy of the License at 720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * 1020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * Unless required by applicable law or agreed to in writing, software 1120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 1220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * See the License for the specific language governing permissions and 1420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber * limitations under the License. 1520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber */ 1620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 1720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#ifndef DATA_SOURCE_H_ 1820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 1920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#define DATA_SOURCE_H_ 2020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#include <sys/types.h> 2220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 230683eba6b35c396c21f10e926709f2f8fc05f090Andreas Huber#include <media/stagefright/MediaErrors.h> 2420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#include <utils/Errors.h> 255561ccf4a8db88a2e44eac1b3ed13b4ff53a7f20Andreas Huber#include <utils/KeyedVector.h> 2620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#include <utils/List.h> 27693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huber#include <utils/RefBase.h> 2820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#include <utils/threads.h> 29dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang#include <drm/DrmManagerClient.h> 3020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 3120111aa043c5f404472bc63b90bc5aad906b1101Andreas Hubernamespace android { 3220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 335a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huberstruct AMessage; 3420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberclass String8; 3520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 36693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huberclass DataSource : public RefBase { 3720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberpublic: 3866b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber enum Flags { 39acdd9d0f59c3d8bdc3de80664a609527ec3d21e2Andreas Huber kWantsPrefetching = 1, 40acdd9d0f59c3d8bdc3de80664a609527ec3d21e2Andreas Huber kStreamedFromLocalHost = 2, 41bff07d0b22a5ee2d9f044f6cb5e4be1532017ab0Andreas Huber kIsCachingDataSource = 4, 42b33d2ac90cfce0fe6db8c3e979e7ae2bbfc28163James Dong kIsHTTPBasedSource = 8, 4366b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber }; 4466b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber 455561ccf4a8db88a2e44eac1b3ed13b4ff53a7f20Andreas Huber static sp<DataSource> CreateFromURI( 465561ccf4a8db88a2e44eac1b3ed13b4ff53a7f20Andreas Huber const char *uri, 475561ccf4a8db88a2e44eac1b3ed13b4ff53a7f20Andreas Huber const KeyedVector<String8, String8> *headers = NULL); 48fc9ba09e3bb368f823d473f5e2bb9aa32dba6289Andreas Huber 4920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber DataSource() {} 5020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 5134769bc913e9f6bb138e666d94a9d685bf3da217Andreas Huber virtual status_t initCheck() const = 0; 5234769bc913e9f6bb138e666d94a9d685bf3da217Andreas Huber 53c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong virtual ssize_t readAt(off64_t offset, void *data, size_t size) = 0; 5420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 55693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huber // Convenience methods: 56c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong bool getUInt16(off64_t offset, uint16_t *x); 57ec77122351b4e78c1fe5b60a208f76baf8c67591Marco Nelissen bool getUInt24(off64_t offset, uint32_t *x); // 3 byte int, returned as a 32-bit int 5805f625c46b992ab66b8d1527a366fe2746b4e3c7Marco Nelissen bool getUInt32(off64_t offset, uint32_t *x); 5905f625c46b992ab66b8d1527a366fe2746b4e3c7Marco Nelissen bool getUInt64(off64_t offset, uint64_t *x); 60693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huber 6120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber // May return ERROR_UNSUPPORTED. 62c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong virtual status_t getSize(off64_t *size); 6320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 6466b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber virtual uint32_t flags() { 6566b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber return 0; 6666b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber } 6766b0a35c9a4136a84c3f73b1b25fcb5220138b95Andreas Huber 680683eba6b35c396c21f10e926709f2f8fc05f090Andreas Huber virtual status_t reconnectAtOffset(off64_t offset) { 690683eba6b35c396c21f10e926709f2f8fc05f090Andreas Huber return ERROR_UNSUPPORTED; 700683eba6b35c396c21f10e926709f2f8fc05f090Andreas Huber } 710683eba6b35c396c21f10e926709f2f8fc05f090Andreas Huber 7220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber //////////////////////////////////////////////////////////////////////////// 7320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 745a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber bool sniff(String8 *mimeType, float *confidence, sp<AMessage> *meta); 7520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 765a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber // The sniffer can optionally fill in "meta" with an AMessage containing 775a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber // a dictionary of values that helps the corresponding extractor initialize 785a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber // its state without duplicating effort already exerted by the sniffer. 7920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber typedef bool (*SnifferFunc)( 805a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber const sp<DataSource> &source, String8 *mimeType, 815a1c3529e4fa2f8a11054181294e0ce79fff8dd3Andreas Huber float *confidence, sp<AMessage> *meta); 8220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 8320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber static void RegisterSniffer(SnifferFunc func); 8420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber static void RegisterDefaultSniffers(); 8520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 86dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang // for DRM 879d2f386dd2885eaffa11fd494ae258bb09fe6397James Dong virtual sp<DecryptHandle> DrmInitialization(const char *mime = NULL) { 88dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return NULL; 89dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 90b5ce361d19e69fe156f7188c9ee0f4734b259874Gloria Wang virtual void getDrmInfo(sp<DecryptHandle> &handle, DrmManagerClient **client) {}; 91dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 92771b85d9245a24273497792a2515d88d31c99e1eGloria Wang virtual String8 getUri() { 93771b85d9245a24273497792a2515d88d31c99e1eGloria Wang return String8(); 94771b85d9245a24273497792a2515d88d31c99e1eGloria Wang } 95dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 966511c9755c3a3360ba869772600c7aae048a7ffcAndreas Huber virtual String8 getMIMEType() const; 976511c9755c3a3360ba869772600c7aae048a7ffcAndreas Huber 98693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huberprotected: 99693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huber virtual ~DataSource() {} 100693d271e62a3726689ff68f4505ba49228eb94b2Andreas Huber 10120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huberprivate: 10220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber static Mutex gSnifferMutex; 10320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber static List<SnifferFunc> gSniffers; 10420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 10520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber DataSource(const DataSource &); 10620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber DataSource &operator=(const DataSource &); 10720111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber}; 10820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 10920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} // namespace android 11020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 11120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber#endif // DATA_SOURCE_H_ 112