media/base/media_posix.cc

   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
  16 using third_party_ffmpeg::kNumStubModules;
  17 using third_party_ffmpeg::kModuleFfmpegsumo;
  18 using third_party_ffmpeg::InitializeStubs;
  19 using third_party_ffmpeg::StubPathMap;
  20
  21 namespace media {
  22 namespace 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")
  38 static 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)
  42 static 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
  48 bool 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