File chromium-7.0.542.0-media-probe.patch of Package chromium

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File chromium-7.0.542.0-media-probe.patch of Package chromium (Revision f4e14889c44af83130b25ff06e9bc499)

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diff -up chromium-7.0.542.0/net/base/mime_util.cc.media-probe chromium-7.0.542.0/net/base/mime_util.cc
--- chromium-7.0.542.0/src/net/base/mime_util.cc.media-probe	2010-10-04 05:40:38.000000000 -0400
+++ chromium-7.0.542.0/src/net/base/mime_util.cc	2010-10-04 15:02:09.324499172 -0400
@@ -15,6 +15,15 @@
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 
+#include "base/path_service.h"
+
+#if ! defined(OS_MACOSX) && defined (OS_POSIX)
+#include <dlfcn.h>
+#define HAVE_DLFCN 1
+#else
+#define HAVE_DLFCN 0
+#endif
+
 using std::string;
 
 namespace net {
@@ -224,34 +233,36 @@
   "image/x-xbitmap"  // xbm
 };
 
-// A list of media types: http://en.wikipedia.org/wiki/Internet_media_type
-// A comprehensive mime type list: http://plugindoc.mozdev.org/winmime.php
-static const char* const supported_media_types[] = {
-#if defined(ENABLE_MEDIA_TYPE_OGG)
-  // Ogg.
-  "video/ogg",
-  "audio/ogg",
-  "application/ogg",
-#endif
+struct format_info {
+  const char* name;
+  const char* symbol;
+  const bool  fallback;
+};
 
-  // WebM.
-  "video/webm",
-  "audio/webm",
-  "audio/wav",
-  "audio/x-wav",
 
 #if defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
-  // MPEG-4.
-  "video/mp4",
-  "video/x-m4v",
-  "audio/mp4",
-  "audio/x-m4a",
-
-  // MP3.
-  "audio/mp3",
-  "audio/x-mp3",
-  "audio/mpeg",
+#define MPEG true
+#else
+#define MPEG false
 #endif
+
+// A list of media types: http://en.wikipedia.org/wiki/Internet_media_type
+// A comprehensive mime type list: http://plugindoc.mozdev.org/winmime.php
+static const format_info supported_media_types[] = {
+  { "video/ogg",       "ogg_demuxer",      true },
+  { "audio/ogg",       "ogg_demuxer",      true },
+  { "application/ogg",  "ogg_demuxer",      true },
+  { "video/webm",      "matroska_demuxer", true },
+  { "audio/webm",      "matroska_demuxer", true },
+  { "audio/wav",        "wav_demuxer",      true },
+  { "audio/x-wav",      "wav_demuxer",      true },
+  { "video/mp4",       "mov_demuxer",      MPEG },
+  { "video/x-m4v",      "mov_demuxer",      MPEG },
+  { "audio/mp4",       "mov_demuxer",      MPEG },
+  { "audio/x-m4a",      "mov_demuxer",      MPEG },
+  { "audio/mp3",       "mp3_demuxer",      MPEG },
+  { "audio/x-mp3",      "mp3_demuxer",      MPEG },
+  { "audio/mpeg",      "mp3_demuxer",      MPEG },
 };
 
 // List of supported codecs when passed in with <source type="...">.
@@ -261,17 +272,12 @@
 //
 // The codecs for WAV are integers as defined in Appendix A of RFC2361:
 // http://tools.ietf.org/html/rfc2361
-static const char* const supported_media_codecs[] = {
-#if defined(GOOGLE_CHROME_BUILD) || defined(USE_PROPRIETARY_CODECS)
-  "avc1",
-  "mp4a",
-#endif
-#if defined(ENABLE_MEDIA_CODEC_THEORA)
-  "theora",
-#endif
-  "vorbis",
-  "vp8",
-  "1"  // WAVE_FORMAT_PCM.
+static const format_info supported_media_codecs[] = {
+  { "avc1",   "aac_decoder",    MPEG },
+  { "mp4a",   "h264_decoder",   MPEG },
+  { "theora", "theora_decoder", true },
+  { "vorbis", "vorbis_decoder", true },
+  { "vp8",    "libvpx_decoder", true },
 };
 
 // Note: does not include javascript types list (see supported_javascript_types)
@@ -345,7 +351,47 @@
   { "audio/wav", "1" }
 };
 
+#if defined(OS_MACOSX)
+#define DSO_NAME(MODULE) ("lib" MODULE ".dylib")
+#elif defined(OS_POSIX)
+#define DSO_NAME(MODULE) ("lib" MODULE ".so")
+#else
+#define DSO_NAME(MODULE) (MODULE ".dll")
+#endif
+
+static void* GetHandle(const FilePath& module_dir, const char* library) {
+#if HAVE_DLFCN
+  FilePath path = module_dir.Append(library);
+  return dlopen(path.value().c_str(), RTLD_LAZY);
+#else
+  return NULL;
+#endif
+}
+
+static void DumpHandle(void* dlhandle) {
+#if HAVE_DLFCN
+  if (dlhandle)
+    dlclose(dlhandle);
+#endif
+}
+
+static bool ProbeFormat(void* dlhandle, const char* symbol, bool fallback) {
+#if HAVE_DLFCN
+  return dlhandle && dlsym(dlhandle, symbol);
+#else
+  return fallback;
+#endif
+}
+
 void MimeUtil::InitializeMimeTypeMaps() {
+  FilePath module_path;
+#if defined(OS_MACOSX)
+  module_path = mac_util::MainAppBundlePath().Append("Libraries");
+#else
+  PathService::Get(base::DIR_MODULE, &module_path);
+#endif
+  void* h_ffmpegsumo = GetHandle(module_path, DSO_NAME("ffmpegsumo"));
+
   for (size_t i = 0; i < arraysize(supported_image_types); ++i)
     image_map_.insert(supported_image_types[i]);
 
@@ -355,11 +401,15 @@
   for (size_t i = 0; i < arraysize(supported_javascript_types); ++i)
     non_image_map_.insert(supported_javascript_types[i]);
   for (size_t i = 0; i < arraysize(supported_media_types); ++i)
-    non_image_map_.insert(supported_media_types[i]);
+    if (ProbeFormat(h_ffmpegsumo, supported_media_types[i].symbol,
+                    supported_media_types[i].fallback))
+      non_image_map_.insert(supported_media_types[i].name);
 
   // Initialize the supported media types.
   for (size_t i = 0; i < arraysize(supported_media_types); ++i)
-    media_map_.insert(supported_media_types[i]);
+    if (ProbeFormat(h_ffmpegsumo, supported_media_types[i].symbol,
+                    supported_media_types[i].fallback))
+      media_map_.insert(supported_media_types[i].name);
 
   for (size_t i = 0; i < arraysize(supported_javascript_types); ++i)
     javascript_map_.insert(supported_javascript_types[i]);
@@ -368,7 +418,9 @@
     view_source_map_.insert(view_source_types[i]);
 
   for (size_t i = 0; i < arraysize(supported_media_codecs); ++i)
-    codecs_map_.insert(supported_media_codecs[i]);
+    if (ProbeFormat(h_ffmpegsumo, supported_media_codecs[i].symbol,
+                    supported_media_codecs[i].fallback))
+      codecs_map_.insert(supported_media_codecs[i].name);
 
   // Initialize the strict supported media types.
   for (size_t i = 0; i < arraysize(format_codec_mappings); ++i) {
@@ -382,6 +434,8 @@
       codecs.insert(mime_type_codecs[j]);
     strict_format_map_[format_codec_mappings[i].mime_type] = codecs;
   }
+
+  DumpHandle(h_ffmpegsumo);
 }
 
 bool MimeUtil::IsSupportedImageMimeType(const char* mime_type) const {

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File chromium-7.0.542.0-media-probe.patch of Package chromium (Revision f4e14889c44af83130b25ff06e9bc499)

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