1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "media/base/media.h"
6
7#include <string>
8
9#include "base/files/file_path.h"
10#include "base/logging.h"
11#include "base/path_service.h"
12#include "base/strings/stringize_macros.h"
13#include "media/ffmpeg/ffmpeg_common.h"
14#include "third_party/ffmpeg/ffmpeg_stubs.h"
15
16using third_party_ffmpeg::kNumStubModules;
17using third_party_ffmpeg::kModuleFfmpegsumo;
18using third_party_ffmpeg::InitializeStubs;
19using third_party_ffmpeg::StubPathMap;
20
21namespace media {
22namespace internal {
23
24// Handy to prevent shooting ourselves in the foot with macro wizardry.
25#if !defined(LIBAVCODEC_VERSION_MAJOR) || \
26    !defined(LIBAVFORMAT_VERSION_MAJOR) || \
27    !defined(LIBAVUTIL_VERSION_MAJOR)
28#error FFmpeg headers not included!
29#endif
30
31#define AVCODEC_VERSION STRINGIZE(LIBAVCODEC_VERSION_MAJOR)
32#define AVFORMAT_VERSION STRINGIZE(LIBAVFORMAT_VERSION_MAJOR)
33#define AVUTIL_VERSION STRINGIZE(LIBAVUTIL_VERSION_MAJOR)
34
35#if defined(OS_MACOSX)
36// TODO(evan): should be using .so like ffmepgsumo here.
37#define DSO_NAME(MODULE, VERSION) ("lib" MODULE "." VERSION ".dylib")
38static const base::FilePath::CharType kSumoLib[] =
39    FILE_PATH_LITERAL("ffmpegsumo.so");
40#elif defined(OS_POSIX)
41#define DSO_NAME(MODULE, VERSION) ("lib" MODULE ".so." VERSION)
42static const base::FilePath::CharType kSumoLib[] =
43    FILE_PATH_LITERAL("libffmpegsumo.so");
44#else
45#error "Do not know how to construct DSO name for this OS."
46#endif
47
48bool InitializeMediaLibraryInternal(const base::FilePath& module_dir) {
49  StubPathMap paths;
50
51  // First try to initialize with Chrome's sumo library.
52  DCHECK_EQ(kNumStubModules, 1);
53  paths[kModuleFfmpegsumo].push_back(module_dir.Append(kSumoLib).value());
54
55  // If that fails, see if any system libraries are available.
56  paths[kModuleFfmpegsumo].push_back(module_dir.Append(
57      FILE_PATH_LITERAL(DSO_NAME("avutil", AVUTIL_VERSION))).value());
58  paths[kModuleFfmpegsumo].push_back(module_dir.Append(
59      FILE_PATH_LITERAL(DSO_NAME("avcodec", AVCODEC_VERSION))).value());
60  paths[kModuleFfmpegsumo].push_back(module_dir.Append(
61      FILE_PATH_LITERAL(DSO_NAME("avformat", AVFORMAT_VERSION))).value());
62
63  return InitializeStubs(paths);
64}
65
66}  // namespace internal
67}  // namespace media
68