FileSource.cpp revision c7fc37a3dab9bd1f96713649f351b5990e6316ff
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#include <media/stagefright/FileSource.h> 180c89199745bc1bf05b997fc7c342017807676b6fAndreas Huber#include <media/stagefright/MediaDebug.h> 19c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong#include <sys/types.h> 20c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong#include <unistd.h> 2120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2220111aa043c5f404472bc63b90bc5aad906b1101Andreas Hubernamespace android { 2320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 2420111aa043c5f404472bc63b90bc5aad906b1101Andreas HuberFileSource::FileSource(const char *filename) 2503475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber : mFile(fopen(filename, "rb")), 264e6572967da698d568a44d18797b751ec8ae5401Andreas Huber mFd(mFile == NULL ? -1 : fileno(mFile)), 2703475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber mOffset(0), 28dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mLength(-1), 29dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDecryptHandle(NULL), 30dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmManagerClient(NULL), 31dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBufOffset(0), 32dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBufSize(0), 33dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBuf(NULL){ 3403475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber} 3503475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber 3603475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas HuberFileSource::FileSource(int fd, int64_t offset, int64_t length) 3703475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber : mFile(fdopen(fd, "rb")), 38dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mFd(fd), 3903475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber mOffset(offset), 40dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mLength(length), 41dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDecryptHandle(NULL), 42dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmManagerClient(NULL), 43dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBufOffset(0), 44dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBufSize(0), 45dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBuf(NULL){ 4603475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber CHECK(offset >= 0); 4703475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber CHECK(length >= 0); 4820111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 4920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 5020111aa043c5f404472bc63b90bc5aad906b1101Andreas HuberFileSource::~FileSource() { 5120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber if (mFile != NULL) { 5220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber fclose(mFile); 5320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber mFile = NULL; 5420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber } 55dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 56dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDrmBuf != NULL) { 57dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang delete[] mDrmBuf; 58dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBuf = NULL; 59dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 6020111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 6120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 6234769bc913e9f6bb138e666d94a9d685bf3da217Andreas Huberstatus_t FileSource::initCheck() const { 6320111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber return mFile != NULL ? OK : NO_INIT; 6420111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 6520111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 66c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dongssize_t FileSource::readAt(off64_t offset, void *data, size_t size) { 673d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber if (mFile == NULL) { 683d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber return NO_INIT; 693d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber } 703d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber 7120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber Mutex::Autolock autoLock(mLock); 7220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 7303475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber if (mLength >= 0) { 7403475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber if (offset >= mLength) { 7503475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber return 0; // read beyond EOF. 7603475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber } 7703475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber int64_t numAvailable = mLength - offset; 7803475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber if ((int64_t)size > numAvailable) { 7903475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber size = numAvailable; 8003475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber } 8103475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber } 8203475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber 83dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDecryptHandle != NULL && DecryptApiType::CONTAINER_BASED 84dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang == mDecryptHandle->decryptApiType) { 85dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return readAtDRM(offset, data, size); 86dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } else { 87c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t result = lseek64(mFd, offset + mOffset, SEEK_SET); 88c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong if (result == -1) { 89dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang LOGE("seek to %lld failed", offset + mOffset); 90dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return UNKNOWN_ERROR; 91dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 9220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 93c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong return ::read(mFd, data, size); 94dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 9503475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber} 9603475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber 97c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dongstatus_t FileSource::getSize(off64_t *size) { 983d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber if (mFile == NULL) { 993d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber return NO_INIT; 1003d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber } 1013d8055ac96170de7a8c49b9ffbe83ed447ccddceAndreas Huber 10203475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber if (mLength >= 0) { 10303475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber *size = mLength; 10403475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber 10503475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber return OK; 10603475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber } 10703475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber 108c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong *size = lseek64(mFd, 0, SEEK_END); 10920111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 11003475f5af25e4aa32d46d41dd2ec756853d8dd9dAndreas Huber return OK; 11120111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} 11220111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber 113dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria WangDecryptHandle* FileSource::DrmInitialization(DrmManagerClient* client) { 114b371426ce4cf2fa6d8c3d1903b61322feb165d35Gloria Wang if (client == NULL) { 115b371426ce4cf2fa6d8c3d1903b61322feb165d35Gloria Wang return NULL; 116b371426ce4cf2fa6d8c3d1903b61322feb165d35Gloria Wang } 117dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmManagerClient = client; 118b371426ce4cf2fa6d8c3d1903b61322feb165d35Gloria Wang 119dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDecryptHandle == NULL) { 120dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDecryptHandle = mDrmManagerClient->openDecryptSession( 121dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mFd, mOffset, mLength); 122dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 123dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 124dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDecryptHandle == NULL) { 125dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmManagerClient = NULL; 126dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 127dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 128dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return mDecryptHandle; 129dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang} 130dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 131dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wangvoid FileSource::getDrmInfo(DecryptHandle **handle, DrmManagerClient **client) { 132dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang *handle = mDecryptHandle; 133dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 134dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang *client = mDrmManagerClient; 135dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang} 136dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 137c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dongssize_t FileSource::readAtDRM(off64_t offset, void *data, size_t size) { 138dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang size_t DRM_CACHE_SIZE = 1024; 139dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDrmBuf == NULL) { 140dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBuf = new unsigned char[DRM_CACHE_SIZE]; 141dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 142dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang 143dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDrmBuf != NULL && mDrmBufSize > 0 && (offset + mOffset) >= mDrmBufOffset 144dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang && (offset + mOffset + size) <= (mDrmBufOffset + mDrmBufSize)) { 145dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang /* Use buffered data */ 146dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang memcpy(data, (void*)(mDrmBuf+(offset+mOffset-mDrmBufOffset)), size); 147dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return size; 148dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } else if (size <= DRM_CACHE_SIZE) { 149dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang /* Buffer new data */ 150dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBufOffset = offset + mOffset; 151dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang mDrmBufSize = mDrmManagerClient->pread(mDecryptHandle, mDrmBuf, 152dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang DRM_CACHE_SIZE, offset + mOffset); 153dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang if (mDrmBufSize > 0) { 154dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang int64_t dataRead = 0; 155dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang dataRead = size > mDrmBufSize ? mDrmBufSize : size; 156dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang memcpy(data, (void*)mDrmBuf, dataRead); 157dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return dataRead; 158dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } else { 159dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return mDrmBufSize; 160dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 161dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } else { 162dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang /* Too big chunk to cache. Call DRM directly */ 163dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang return mDrmManagerClient->pread(mDecryptHandle, data, size, offset + mOffset); 164dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang } 165dcd25efb46c41c8d24a0a9cf61fb57f84149709eGloria Wang} 16620111aa043c5f404472bc63b90bc5aad906b1101Andreas Huber} // namespace android 167