blob: 71c7dc5e0ecd8d4fa80a079b191a78f423cfb421 [file] [log] [blame]
* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <stdint.h>
#include <memory>
#include <vector>
#include "api/array_view.h"
#include "common_types.h" // NOLINT(build/include)
#include "modules/include/module_common_types.h"
#include "modules/rtp_rtcp/source/rtp_video_header.h"
namespace webrtc {
class RtpPacketToSend;
class RtpPacketizer {
struct PayloadSizeLimits {
int max_payload_len = 1200;
int first_packet_reduction_len = 0;
int last_packet_reduction_len = 0;
// Reduction len for packet that is first & last at the same time.
int single_packet_reduction_len = 0;
static std::unique_ptr<RtpPacketizer> Create(
VideoCodecType type,
rtc::ArrayView<const uint8_t> payload,
PayloadSizeLimits limits,
// Codec-specific details.
const RTPVideoHeader& rtp_video_header,
FrameType frame_type,
const RTPFragmentationHeader* fragmentation);
virtual ~RtpPacketizer() = default;
// Returns number of remaining packets to produce by the packetizer.
virtual size_t NumPackets() const = 0;
// Get the next payload with payload header.
// Write payload and set marker bit of the |packet|.
// Returns true on success, false otherwise.
virtual bool NextPacket(RtpPacketToSend* packet) = 0;
// Split payload_len into sum of integers with respect to |limits|.
// Returns empty vector on failure.
static std::vector<int> SplitAboutEqually(int payload_len,
const PayloadSizeLimits& limits);
// TODO(sprang): Update the depacketizer to return a std::unqie_ptr with a copy
// of the parsed payload, rather than just a pointer into the incoming buffer.
// This way we can move some parsing out from the jitter buffer into here, and
// the jitter buffer can just store that pointer rather than doing a copy there.
class RtpDepacketizer {
struct ParsedPayload {
RTPVideoHeader& video_header() { return video; }
const RTPVideoHeader& video_header() const { return video; }
RTPVideoHeader video;
const uint8_t* payload;
size_t payload_length;
FrameType frame_type;
static RtpDepacketizer* Create(VideoCodecType type);
virtual ~RtpDepacketizer() {}
// Parses the RTP payload, parsed result will be saved in |parsed_payload|.
virtual bool Parse(ParsedPayload* parsed_payload,
const uint8_t* payload_data,
size_t payload_data_length) = 0;
} // namespace webrtc