1826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev/*-------------------------------------------------------------------------- 2dd5743ee305c8db17facba3e0176a3d07adc7499Rom LemarchandCopyright (c) 2010-2012, Code Aurora Forum. All rights reserved. 3826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 4826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevRedistribution and use in source and binary forms, with or without 5826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchevmodification, are permitted provided that the following conditions are met: 6826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev * Redistributions of source code must retain the above copyright 7826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev notice, this list of conditions and the following disclaimer. 8826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev * Redistributions in binary form must reproduce the above copyright 9826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev notice, this list of conditions and the following disclaimer in the 10826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev documentation and/or other materials provided with the distribution. 11dd5743ee305c8db17facba3e0176a3d07adc7499Rom Lemarchand * Neither the name of Code Aurora nor 12826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev the names of its contributors may be used to endorse or promote 13826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev products derived from this software without specific prior written 14826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev permission. 15826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 16826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevTHIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevAND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevIMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevNON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 20826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevCONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 21826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevEXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevPROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 23826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevOR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevWHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 25826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevOTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 26826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev--------------------------------------------------------------------------*/ 28826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 29826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#include "DivXDrmDecrypt.h" 30826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#include <dlfcn.h> // for dlopen/dlclose 31826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 32826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev//#define LOG_NDEBUG 0 33826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#define LOG_TAG "DivXDrmDecrypt" 34826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#ifdef _ANDROID_ 35826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#include <utils/Log.h> 36826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#else 37826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#include <stdio.h> 38826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#define ALOGE(fmt, args...) fprintf(stderr, fmt, ##args) 39826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev#endif /* _ANDROID_ */ 40826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 41826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchevstatic const char* DIVX_DRM_SHIM_LIB = "libSHIMDivxDrm.so"; 42826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 43826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchevvoid* getDecryptHandle() { 44826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev static void* decryptLib = NULL; 45826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev static bool decryptLibOpened = false; 46826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 47826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if(decryptLibOpened) { 48826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return decryptLib; 49826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 50826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 51826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev decryptLib = ::dlopen(DIVX_DRM_SHIM_LIB, RTLD_NOW); 52826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev decryptLibOpened = true; 53826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 54826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if (decryptLib == NULL) { 55826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev ALOGE("Failed to open DIVX_DRM_SHIM_LIB \n"); 56826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 57826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 58826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return decryptLib; 59826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev} 60826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 61826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevDivXDrmDecryptFactory DrmDecryptFactoryFunction() { 62826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev static DivXDrmDecryptFactory drmDecryptFactoryFunction = NULL; 63826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev static bool alreadyTriedToFindFactoryFunction = false; 64826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 65826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if(alreadyTriedToFindFactoryFunction) { 66826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return drmDecryptFactoryFunction; 67826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 68826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 69826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev void *pDecryptLib = getDecryptHandle(); 70826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if (pDecryptLib == NULL) { 71826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return NULL; 72826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 73826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 74826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev drmDecryptFactoryFunction = (DivXDrmDecryptFactory) dlsym(pDecryptLib, MEDIA_CREATE_DIVX_DRM_DECRYPT); 75826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev alreadyTriedToFindFactoryFunction = true; 76826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 77826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if(!drmDecryptFactoryFunction) { 78826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev ALOGE(" dlsym for DrmDecrypt factory function failed \n"); 79826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 80826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 81826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return drmDecryptFactoryFunction; 82826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev} 83826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 84826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 85826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 86826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan MalchevDivXDrmDecrypt* DivXDrmDecrypt::Create() { 87826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev DivXDrmDecryptFactory drmCreateFunc = DrmDecryptFactoryFunction(); 88826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if( drmCreateFunc == NULL ) { 89826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return NULL; 90826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 91826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 92826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev DivXDrmDecrypt* decrypt = drmCreateFunc(); 93826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev if( decrypt == NULL ) { 94826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev ALOGE(" failed to instantiate DrmDecoder \n"); 95826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev } 96826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev return decrypt; 97826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev} 98826ececcbea342f7a0b92ec61847f1c95d384e05Iliyan Malchev 99