The Tor Browser / file comparison
comparison: content/media/fmp4/ffmpeg/FFmpegRuntimeLinker.cpp
content/media/fmp4/ffmpeg/FFmpegRuntimeLinker.cpp
- branch
- TOR_BUG_9701
- changeset 9
- a63d609f5ebe
equal
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replaced
| -1:000000000000 | 0:9b3ab0ea7f99 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include <dlfcn.h> | |
| 8 | |
| 9 #include "nsDebug.h" | |
| 10 | |
| 11 #include "FFmpegRuntimeLinker.h" | |
| 12 | |
| 13 // For FFMPEG_LOG | |
| 14 #include "FFmpegDecoderModule.h" | |
| 15 | |
| 16 #define NUM_ELEMENTS(X) (sizeof(X) / sizeof((X)[0])) | |
| 17 | |
| 18 #define LIBAVCODEC 0 | |
| 19 #define LIBAVFORMAT 1 | |
| 20 #define LIBAVUTIL 2 | |
| 21 | |
| 22 namespace mozilla | |
| 23 { | |
| 24 | |
| 25 FFmpegRuntimeLinker::LinkStatus FFmpegRuntimeLinker::sLinkStatus = | |
| 26 LinkStatus_INIT; | |
| 27 | |
| 28 static const char * const sLibNames[] = { | |
| 29 "libavcodec.so.53", "libavformat.so.53", "libavutil.so.51", | |
| 30 }; | |
| 31 | |
| 32 void* FFmpegRuntimeLinker::sLinkedLibs[NUM_ELEMENTS(sLibNames)] = { | |
| 33 nullptr, nullptr, nullptr | |
| 34 }; | |
| 35 | |
| 36 #define AV_FUNC(lib, func) typeof(func) func; | |
| 37 #include "FFmpegFunctionList.h" | |
| 38 #undef AV_FUNC | |
| 39 | |
| 40 /* static */ bool | |
| 41 FFmpegRuntimeLinker::Link() | |
| 42 { | |
| 43 if (sLinkStatus) { | |
| 44 return sLinkStatus == LinkStatus_SUCCEEDED; | |
| 45 } | |
| 46 | |
| 47 for (uint32_t i = 0; i < NUM_ELEMENTS(sLinkedLibs); i++) { | |
| 48 if (!(sLinkedLibs[i] = dlopen(sLibNames[i], RTLD_NOW | RTLD_LOCAL))) { | |
| 49 NS_WARNING("Couldn't link ffmpeg libraries."); | |
| 50 goto fail; | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 #define AV_FUNC(lib, func) \ | |
| 55 func = (typeof(func))dlsym(sLinkedLibs[lib], #func); \ | |
| 56 if (!func) { \ | |
| 57 NS_WARNING("Couldn't load FFmpeg function " #func "."); \ | |
| 58 goto fail; \ | |
| 59 } | |
| 60 #include "FFmpegFunctionList.h" | |
| 61 #undef AV_FUNC | |
| 62 | |
| 63 sLinkStatus = LinkStatus_SUCCEEDED; | |
| 64 return true; | |
| 65 | |
| 66 fail: | |
| 67 Unlink(); | |
| 68 | |
| 69 sLinkStatus = LinkStatus_FAILED; | |
| 70 return false; | |
| 71 } | |
| 72 | |
| 73 /* static */ void | |
| 74 FFmpegRuntimeLinker::Unlink() | |
| 75 { | |
| 76 FFMPEG_LOG("Unlinking ffmpeg libraries."); | |
| 77 for (uint32_t i = 0; i < NUM_ELEMENTS(sLinkedLibs); i++) { | |
| 78 if (sLinkedLibs[i]) { | |
| 79 dlclose(sLinkedLibs[i]); | |
| 80 sLinkedLibs[i] = nullptr; | |
| 81 } | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 } // namespace mozilla |
