| // 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_ |