1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "FFmpegRuntimeLinker.h"
#include "FFmpegLibWrapper.h"
#include "mozilla/ArrayUtils.h"
#include "FFmpegLog.h"
#include "prlink.h"
namespace mozilla
{
FFmpegRuntimeLinker::LinkStatus FFmpegRuntimeLinker::sLinkStatus =
LinkStatus_INIT;
const char* FFmpegRuntimeLinker::sLinkStatusLibraryName = "";
template <int V> class FFmpegDecoderModule
{
public:
static already_AddRefed<PlatformDecoderModule> Create(FFmpegLibWrapper*);
};
static FFmpegLibWrapper sLibAV;
static const char* sLibs[] = {
"libavcodec.so.59",
"libavcodec.so.58",
"libavcodec-ffmpeg.so.59",
"libavcodec-ffmpeg.so.58",
"libavcodec-ffmpeg.so.57",
"libavcodec-ffmpeg.so.56",
"libavcodec.so.57",
"libavcodec.so.56",
"libavcodec.so.55",
"libavcodec.so.54",
"libavcodec.so.53",
};
/* static */ bool
FFmpegRuntimeLinker::Init()
{
if (sLinkStatus != LinkStatus_INIT) {
return sLinkStatus == LinkStatus_SUCCEEDED;
}
// While going through all possible libs, this status will be updated with a
// more precise error if possible.
sLinkStatus = LinkStatus_NOT_FOUND;
for (size_t i = 0; i < ArrayLength(sLibs); i++) {
const char* lib = sLibs[i];
PRLibSpec lspec;
lspec.type = PR_LibSpec_Pathname;
lspec.value.pathname = lib;
sLibAV.mAVCodecLib = PR_LoadLibraryWithFlags(lspec, PR_LD_NOW | PR_LD_LOCAL);
if (sLibAV.mAVCodecLib) {
sLibAV.mAVUtilLib = sLibAV.mAVCodecLib;
switch (sLibAV.Link()) {
case FFmpegLibWrapper::LinkResult::Success:
sLinkStatus = LinkStatus_SUCCEEDED;
sLinkStatusLibraryName = lib;
return true;
case FFmpegLibWrapper::LinkResult::NoProvidedLib:
MOZ_ASSERT_UNREACHABLE("Incorrectly-setup sLibAV");
break;
case FFmpegLibWrapper::LinkResult::NoAVCodecVersion:
if (sLinkStatus > LinkStatus_INVALID_CANDIDATE) {
sLinkStatus = LinkStatus_INVALID_CANDIDATE;
sLinkStatusLibraryName = lib;
}
break;
case FFmpegLibWrapper::LinkResult::CannotUseLibAV57:
if (sLinkStatus > LinkStatus_UNUSABLE_LIBAV57) {
sLinkStatus = LinkStatus_UNUSABLE_LIBAV57;
sLinkStatusLibraryName = lib;
}
break;
case FFmpegLibWrapper::LinkResult::BlockedOldLibAVVersion:
if (sLinkStatus > LinkStatus_OBSOLETE_LIBAV) {
sLinkStatus = LinkStatus_OBSOLETE_LIBAV;
sLinkStatusLibraryName = lib;
}
break;
case FFmpegLibWrapper::LinkResult::UnknownFutureLibAVVersion:
case FFmpegLibWrapper::LinkResult::MissingLibAVFunction:
if (sLinkStatus > LinkStatus_INVALID_LIBAV_CANDIDATE) {
sLinkStatus = LinkStatus_INVALID_LIBAV_CANDIDATE;
sLinkStatusLibraryName = lib;
}
break;
case FFmpegLibWrapper::LinkResult::UnknownFutureFFMpegVersion:
case FFmpegLibWrapper::LinkResult::MissingFFMpegFunction:
if (sLinkStatus > LinkStatus_INVALID_FFMPEG_CANDIDATE) {
sLinkStatus = LinkStatus_INVALID_FFMPEG_CANDIDATE;
sLinkStatusLibraryName = lib;
}
break;
case FFmpegLibWrapper::LinkResult::UnknownOlderFFMpegVersion:
if (sLinkStatus > LinkStatus_OBSOLETE_FFMPEG) {
sLinkStatus = LinkStatus_OBSOLETE_FFMPEG;
sLinkStatusLibraryName = lib;
}
break;
}
}
}
FFMPEG_LOG("H264/AAC codecs unsupported without [");
for (size_t i = 0; i < ArrayLength(sLibs); i++) {
FFMPEG_LOG("%s %s", i ? "," : " ", sLibs[i]);
}
FFMPEG_LOG(" ]\n");
return false;
}
/* static */ already_AddRefed<PlatformDecoderModule>
FFmpegRuntimeLinker::CreateDecoderModule()
{
if (!Init()) {
return nullptr;
}
RefPtr<PlatformDecoderModule> module;
switch (sLibAV.mVersion) {
case 53: module = FFmpegDecoderModule<53>::Create(&sLibAV); break;
case 54: module = FFmpegDecoderModule<54>::Create(&sLibAV); break;
case 55:
case 56: module = FFmpegDecoderModule<55>::Create(&sLibAV); break;
case 57: module = FFmpegDecoderModule<57>::Create(&sLibAV); break;
case 58: module = FFmpegDecoderModule<58>::Create(&sLibAV); break;
case 59: module = FFmpegDecoderModule<59>::Create(&sLibAV); break;
default: module = nullptr;
}
return module.forget();
}
/* static */ const char*
FFmpegRuntimeLinker::LinkStatusString()
{
switch (sLinkStatus) {
case LinkStatus_INIT:
return "Libavcodec not initialized yet";
case LinkStatus_SUCCEEDED:
return "Libavcodec linking succeeded";
case LinkStatus_INVALID_FFMPEG_CANDIDATE:
return "Invalid FFMpeg libavcodec candidate";
case LinkStatus_UNUSABLE_LIBAV57:
return "Unusable LibAV's libavcodec 57";
case LinkStatus_INVALID_LIBAV_CANDIDATE:
return "Invalid LibAV libavcodec candidate";
case LinkStatus_OBSOLETE_FFMPEG:
return "Obsolete FFMpeg libavcodec candidate";
case LinkStatus_OBSOLETE_LIBAV:
return "Obsolete LibAV libavcodec candidate";
case LinkStatus_INVALID_CANDIDATE:
return "Invalid libavcodec candidate";
case LinkStatus_NOT_FOUND:
return "Libavcodec not found";
}
MOZ_ASSERT_UNREACHABLE("Unknown sLinkStatus value");
return "?";
}
} // namespace mozilla
|
