Render inband text tracks in the media pipeline

media/base/text_buffer.cc

+// Copyright 2013 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/base/text_buffer.h"
+
+namespace media {
+
+TextBuffer::TextBuffer(const base::TimeDelta& timestamp,
+                       const base::TimeDelta& duration)
+    : timestamp_(timestamp),
+      duration_(duration) {
+}
+
+TextBuffer::~TextBuffer() {}
+
+void TextBuffer::set_string(
+    const uint8* buf,
+    int buflen,
+    std::string* str) {
+  if (buf == NULL || buflen <= 0) {

[fgalligan1, 2013/09/04 22:23:09]

Add DCHECK(str)

[Matthew Heaney (Chromium), 2013/09/13 19:51:54]

OBE

+    str->clear();
+  } else {
+    str->assign(buf, buf + buflen);
+  }
+}
+
+void TextBuffer::set_id(const uint8* id, int id_size) {
+  set_string(id, id_size, &id_);
+}
+
+void TextBuffer::set_settings(const uint8* settings, int settings_size) {
+  set_string(settings, settings_size, &settings_);
+}
+
+void TextBuffer::set_text(const uint8* text, int text_size) {
+  set_string(text, text_size, &text_);
+}
+
+}  // namespace media