content/media/fmp4/ffmpeg/FFmpegRuntimeLinker.cpp@a63d609f5ebe (annotated)
content/media/fmp4/ffmpeg/FFmpegRuntimeLinker.cpp
Thu, 15 Jan 2015 15:55:04 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:55:04 +0100
- branch
- TOR_BUG_9701
- changeset 9
- a63d609f5ebe
- permissions
- -rw-r--r--
Back out 97036ab72558 which inappropriately compared turds to third parties.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include <dlfcn.h> |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsDebug.h" |
| michael@0 | 10 | |
| michael@0 | 11 | #include "FFmpegRuntimeLinker.h" |
| michael@0 | 12 | |
| michael@0 | 13 | // For FFMPEG_LOG |
| michael@0 | 14 | #include "FFmpegDecoderModule.h" |
| michael@0 | 15 | |
| michael@0 | 16 | #define NUM_ELEMENTS(X) (sizeof(X) / sizeof((X)[0])) |
| michael@0 | 17 | |
| michael@0 | 18 | #define LIBAVCODEC 0 |
| michael@0 | 19 | #define LIBAVFORMAT 1 |
| michael@0 | 20 | #define LIBAVUTIL 2 |
| michael@0 | 21 | |
| michael@0 | 22 | namespace mozilla |
| michael@0 | 23 | { |
| michael@0 | 24 | |
| michael@0 | 25 | FFmpegRuntimeLinker::LinkStatus FFmpegRuntimeLinker::sLinkStatus = |
| michael@0 | 26 | LinkStatus_INIT; |
| michael@0 | 27 | |
| michael@0 | 28 | static const char * const sLibNames[] = { |
| michael@0 | 29 | "libavcodec.so.53", "libavformat.so.53", "libavutil.so.51", |
| michael@0 | 30 | }; |
| michael@0 | 31 | |
| michael@0 | 32 | void* FFmpegRuntimeLinker::sLinkedLibs[NUM_ELEMENTS(sLibNames)] = { |
| michael@0 | 33 | nullptr, nullptr, nullptr |
| michael@0 | 34 | }; |
| michael@0 | 35 | |
| michael@0 | 36 | #define AV_FUNC(lib, func) typeof(func) func; |
| michael@0 | 37 | #include "FFmpegFunctionList.h" |
| michael@0 | 38 | #undef AV_FUNC |
| michael@0 | 39 | |
| michael@0 | 40 | /* static */ bool |
| michael@0 | 41 | FFmpegRuntimeLinker::Link() |
| michael@0 | 42 | { |
| michael@0 | 43 | if (sLinkStatus) { |
| michael@0 | 44 | return sLinkStatus == LinkStatus_SUCCEEDED; |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | for (uint32_t i = 0; i < NUM_ELEMENTS(sLinkedLibs); i++) { |
| michael@0 | 48 | if (!(sLinkedLibs[i] = dlopen(sLibNames[i], RTLD_NOW | RTLD_LOCAL))) { |
| michael@0 | 49 | NS_WARNING("Couldn't link ffmpeg libraries."); |
| michael@0 | 50 | goto fail; |
| michael@0 | 51 | } |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | #define AV_FUNC(lib, func) \ |
| michael@0 | 55 | func = (typeof(func))dlsym(sLinkedLibs[lib], #func); \ |
| michael@0 | 56 | if (!func) { \ |
| michael@0 | 57 | NS_WARNING("Couldn't load FFmpeg function " #func "."); \ |
| michael@0 | 58 | goto fail; \ |
| michael@0 | 59 | } |
| michael@0 | 60 | #include "FFmpegFunctionList.h" |
| michael@0 | 61 | #undef AV_FUNC |
| michael@0 | 62 | |
| michael@0 | 63 | sLinkStatus = LinkStatus_SUCCEEDED; |
| michael@0 | 64 | return true; |
| michael@0 | 65 | |
| michael@0 | 66 | fail: |
| michael@0 | 67 | Unlink(); |
| michael@0 | 68 | |
| michael@0 | 69 | sLinkStatus = LinkStatus_FAILED; |
| michael@0 | 70 | return false; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | /* static */ void |
| michael@0 | 74 | FFmpegRuntimeLinker::Unlink() |
| michael@0 | 75 | { |
| michael@0 | 76 | FFMPEG_LOG("Unlinking ffmpeg libraries."); |
| michael@0 | 77 | for (uint32_t i = 0; i < NUM_ELEMENTS(sLinkedLibs); i++) { |
| michael@0 | 78 | if (sLinkedLibs[i]) { |
| michael@0 | 79 | dlclose(sLinkedLibs[i]); |
| michael@0 | 80 | sLinkedLibs[i] = nullptr; |
| michael@0 | 81 | } |
| michael@0 | 82 | } |
| michael@0 | 83 | } |
| michael@0 | 84 | |
| michael@0 | 85 | } // namespace mozilla |
