Add WebMediaPlayer::timelineOffset() support to WebMediaPlayerImpl.

media/ffmpeg/ffmpeg_common.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/ffmpeg/ffmpeg_common.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/video_frame.h"
 #include "media/base/video_util.h"
 
 namespace media {
 
 // Why FF_INPUT_BUFFER_PADDING_SIZE? FFmpeg assumes all input buffers are
 // padded. Check here to ensure FFmpeg only receives data padded to its
 // specifications.
 COMPILE_ASSERT(DecoderBuffer::kPaddingSize >= FF_INPUT_BUFFER_PADDING_SIZE,
@@ skipping 522 matching lines @@
     case VideoFrame::YV12J:
       return PIX_FMT_YUVJ420P;
     case VideoFrame::YV12A:
       return PIX_FMT_YUVA420P;
     default:
       DVLOG(1) << "Unsupported VideoFrame::Format: " << video_format;
   }
   return PIX_FMT_NONE;
 }
 
+bool FFmpegUTCDateToTime(const char* date_utc,
+                         base::Time* out) {
+  DCHECK(date_utc);
+  DCHECK(out);
+
+  std::vector<std::string> fields;
+  std::vector<std::string> date_fields;
+  std::vector<std::string> time_fields;
+  base::Time::Exploded exploded;
+  exploded.millisecond = 0;
+
+  // TODO(acolwell): Update this parsing code when FFmpeg returns sub-second
+  // information.
+  if ((Tokenize(date_utc, " ", &fields) == 2) &&
+      (Tokenize(fields[0], "-", &date_fields) == 3) &&
+      (Tokenize(fields[1], ":", &time_fields) == 3) &&
+      base::StringToInt(date_fields[0], &exploded.year) &&
+      base::StringToInt(date_fields[1], &exploded.month) &&
+      base::StringToInt(date_fields[2], &exploded.day_of_month) &&
+      base::StringToInt(time_fields[0], &exploded.hour) &&
+      base::StringToInt(time_fields[1], &exploded.minute) &&
+      base::StringToInt(time_fields[2], &exploded.second)) {
+    base::Time parsed_time = base::Time::FromUTCExploded(exploded);
+    if (parsed_time.is_null())
+      return false;
+
+    *out = parsed_time;
+    return true;
+  }
+
+  return false;
+}
+
 }  // namespace media