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// 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 "content/browser/media/media_internals.h"
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "base/stringprintf.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_ui.h"
#include "media/base/media_log.h"
#include "media/base/media_log_event.h"
namespace content {
MediaInternals* MediaInternals::GetInstance() {
return Singleton<MediaInternals>::get();
}
MediaInternals::~MediaInternals() {}
void MediaInternals::OnDeleteAudioStream(void* host, int stream_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
std::string stream = base::StringPrintf("audio_streams.%p:%d",
host, stream_id);
DeleteItem(stream);
}
void MediaInternals::OnSetAudioStreamPlaying(
void* host, int stream_id, bool playing) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
UpdateAudioStream(host, stream_id,
"playing", Value::CreateBooleanValue(playing));
}
void MediaInternals::OnSetAudioStreamStatus(
void* host, int stream_id, const std::string& status) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
UpdateAudioStream(host, stream_id,
"status", Value::CreateStringValue(status));
}
void MediaInternals::OnSetAudioStreamVolume(
void* host, int stream_id, double volume) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
UpdateAudioStream(host, stream_id,
"volume", Value::CreateDoubleValue(volume));
}
void MediaInternals::OnMediaEvent(
int render_process_id, const media::MediaLogEvent& event) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// Notify observers that |event| has occured.
DictionaryValue dict;
dict.SetInteger("renderer", render_process_id);
dict.SetInteger("player", event.id);
dict.SetString("type", media::MediaLog::EventTypeToString(event.type));
dict.SetDouble("time", event.time.ToDoubleT());
dict.Set("params", event.params.DeepCopy());
SendUpdate("media.onMediaEvent", &dict);
}
void MediaInternals::AddUpdateCallback(const UpdateCallback& callback) {
update_callbacks_.push_back(callback);
}
void MediaInternals::RemoveUpdateCallback(const UpdateCallback& callback) {
for (size_t i = 0; i < update_callbacks_.size(); ++i) {
if (update_callbacks_[i].Equals(callback)) {
update_callbacks_.erase(update_callbacks_.begin() + i);
return;
}
}
NOTREACHED();
}
void MediaInternals::SendEverything() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
SendUpdate("media.onReceiveEverything", &data_);
}
MediaInternals::MediaInternals() {
}
void MediaInternals::UpdateAudioStream(
void* host, int stream_id, const std::string& property, Value* value) {
std::string stream = base::StringPrintf("audio_streams.%p:%d",
host, stream_id);
UpdateItem("media.addAudioStream", stream, property, value);
}
void MediaInternals::DeleteItem(const std::string& item) {
data_.Remove(item, NULL);
scoped_ptr<Value> value(Value::CreateStringValue(item));
SendUpdate("media.onItemDeleted", value.get());
}
void MediaInternals::UpdateItem(
const std::string& update_fn, const std::string& id,
const std::string& property, Value* value) {
DictionaryValue* item_properties;
if (!data_.GetDictionary(id, &item_properties)) {
item_properties = new DictionaryValue();
data_.Set(id, item_properties);
item_properties->SetString("id", id);
}
item_properties->Set(property, value);
SendUpdate(update_fn, item_properties);
}
void MediaInternals::SendUpdate(const std::string& function, Value* value) {
// Only bother serializing the update to JSON if someone is watching.
if (update_callbacks_.empty())
return;
std::vector<const Value*> args;
args.push_back(value);
string16 update = WebUI::GetJavascriptCall(function, args);
for (size_t i = 0; i < update_callbacks_.size(); i++)
update_callbacks_[i].Run(update);
}
} // namespace content
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