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// Copyright 2014 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.
#ifndef MEDIA_CAST_NET_RTP_FRAMER_H_
#define MEDIA_CAST_NET_RTP_FRAMER_H_
#include <map>
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/tick_clock.h"
#include "base/time/time.h"
#include "media/cast/net/rtcp/rtcp.h"
#include "media/cast/net/rtp/cast_message_builder.h"
#include "media/cast/net/rtp/frame_buffer.h"
#include "media/cast/net/rtp/rtp_defines.h"
namespace media {
namespace cast {
typedef std::map<uint32_t, linked_ptr<FrameBuffer>> FrameList;
class Framer {
public:
Framer(base::TickClock* clock,
RtpPayloadFeedback* incoming_payload_feedback,
uint32_t ssrc,
bool decoder_faster_than_max_frame_rate,
int max_unacked_frames);
~Framer();
// Return true when receiving the last packet in a frame, creating a
// complete frame. If a duplicate packet for an already complete frame is
// received, the function returns false but sets |duplicate| to true.
bool InsertPacket(const uint8_t* payload_data,
size_t payload_size,
const RtpCastHeader& rtp_header,
bool* duplicate);
// Extracts a complete encoded frame - will only return a complete and
// decodable frame. Returns false if no such frames exist.
// |next_frame| will be set to true if the returned frame is the very
// next frame. |have_multiple_complete_frames| will be set to true
// if there are more decodadble frames available.
bool GetEncodedFrame(EncodedFrame* video_frame,
bool* next_frame,
bool* have_multiple_complete_frames);
// TODO(hubbe): Move this elsewhere.
void AckFrame(uint32_t frame_id);
void ReleaseFrame(uint32_t frame_id);
// Reset framer state to original state and flush all pending buffers.
void Reset();
bool TimeToSendNextCastMessage(base::TimeTicks* time_to_send);
void SendCastMessage();
bool Empty() const;
bool FrameExists(uint32_t frame_id) const;
uint32_t NewestFrameId() const;
void RemoveOldFrames(uint32_t frame_id);
// Identifies the next frame to be released (rendered).
bool NextContinuousFrame(uint32_t* frame_id) const;
uint32_t LastContinuousFrame() const;
bool NextFrameAllowingSkippingFrames(uint32_t* frame_id) const;
bool HaveMultipleDecodableFrames() const;
int NumberOfCompleteFrames() const;
void GetMissingPackets(uint32_t frame_id,
bool last_frame,
PacketIdSet* missing_packets) const;
private:
bool ContinuousFrame(FrameBuffer* frame) const;
bool DecodableFrame(FrameBuffer* frame) const;
const bool decoder_faster_than_max_frame_rate_;
FrameList frames_;
scoped_ptr<CastMessageBuilder> cast_msg_builder_;
bool waiting_for_key_;
uint32_t last_released_frame_;
uint32_t newest_frame_id_;
DISALLOW_COPY_AND_ASSIGN(Framer);
};
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_NET_RTP_FRAMER_H_
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