blob: a3ec7ed548cd0f1a8d46d37cddf7f447b4f23d4e [file] [log] [blame]
// 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 <sstream>
#include <string>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "media/base/media_export.h"
#include "media/base/media_log_event.h"
#include "media/base/pipeline_status.h"
namespace media {
// Indicates a string should be added to the log.
// First parameter - The string to add to the log.
typedef base::Callback<void(const std::string&)> LogCB;
// Helper class to make it easier to use log_cb like DVLOG().
class LogHelper {
LogHelper(const LogCB& Log_cb);
std::ostream& stream() { return stream_; }
LogCB log_cb_;
std::stringstream stream_;
#define MEDIA_LOG(log_cb) LogHelper(log_cb).stream()
class MEDIA_EXPORT MediaLog : public base::RefCountedThreadSafe<MediaLog> {
// Convert various enums to strings.
static const char* EventTypeToString(MediaLogEvent::Type type);
static const char* PipelineStatusToString(PipelineStatus);
// Add an event to this log. Overriden by inheritors to actually do something
// with it.
virtual void AddEvent(scoped_ptr<MediaLogEvent> event);
// Helper methods to create events and their parameters.
scoped_ptr<MediaLogEvent> CreateEvent(MediaLogEvent::Type type);
scoped_ptr<MediaLogEvent> CreateBooleanEvent(
MediaLogEvent::Type type, const char* property, bool value);
scoped_ptr<MediaLogEvent> CreateStringEvent(
MediaLogEvent::Type type, const char* property, const std::string& value);
scoped_ptr<MediaLogEvent> CreateTimeEvent(
MediaLogEvent::Type type, const char* property, base::TimeDelta value);
scoped_ptr<MediaLogEvent> CreateLoadEvent(const std::string& url);
scoped_ptr<MediaLogEvent> CreateSeekEvent(float seconds);
scoped_ptr<MediaLogEvent> CreatePipelineStateChangedEvent(
const std::string& state);
scoped_ptr<MediaLogEvent> CreatePipelineErrorEvent(PipelineStatus error);
scoped_ptr<MediaLogEvent> CreateVideoSizeSetEvent(
size_t width, size_t height);
scoped_ptr<MediaLogEvent> CreateBufferedExtentsChangedEvent(
size_t start, size_t current, size_t end);
scoped_ptr<MediaLogEvent> CreateMediaSourceErrorEvent(
const std::string& error);
friend class base::RefCountedThreadSafe<MediaLog>;
virtual ~MediaLog();
// A unique (to this process) id for this MediaLog.
int32 id_;
} // namespace media