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