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* Copyright (c) 2013 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.
// TODO(pbos): Move Config from common.h to here.
#include <string>
#include <vector>
#include "webrtc/common_types.h"
#include "webrtc/typedefs.h"
namespace webrtc {
struct SsrcStats {
: sent_width(0),
max_delay_ms(0) {}
FrameCounts frame_counts;
int sent_width;
int sent_height;
// TODO(holmer): Move bitrate_bps out to the webrtc::Call layer.
int total_bitrate_bps;
int retransmit_bitrate_bps;
int avg_delay_ms;
int max_delay_ms;
StreamDataCounters rtp_stats;
RtcpStatistics rtcp_stats;
// Settings for NACK, see RFC 4585 for details.
struct NackConfig {
NackConfig() : rtp_history_ms(0) {}
// Send side: the time RTP packets are stored for retransmissions.
// Receive side: the time the receiver is prepared to wait for
// retransmissions.
// Set to '0' to disable.
int rtp_history_ms;
// Settings for forward error correction, see RFC 5109 for details. Set the
// payload types to '-1' to disable.
struct FecConfig {
FecConfig() : ulpfec_payload_type(-1), red_payload_type(-1) {}
std::string ToString() const;
// Payload type used for ULPFEC packets.
int ulpfec_payload_type;
// Payload type used for RED packets.
int red_payload_type;
// RTP header extension to use for the video stream, see RFC 5285.
struct RtpExtension {
RtpExtension(const std::string& name, int id) : name(name), id(id) {}
std::string ToString() const;
static bool IsSupported(const std::string& name);
static const char* kTOffset;
static const char* kAbsSendTime;
std::string name;
int id;
struct VideoStream {
: width(0),
max_qp(-1) {}
std::string ToString() const;
size_t width;
size_t height;
int max_framerate;
int min_bitrate_bps;
int target_bitrate_bps;
int max_bitrate_bps;
int max_qp;
// Bitrate thresholds for enabling additional temporal layers. Since these are
// thresholds in between layers, we have one additional layer. One threshold
// gives two temporal layers, one below the threshold and one above, two give
// three, and so on.
// The VideoEncoder may redistribute bitrates over the temporal layers so a
// bitrate threshold of 100k and an estimate of 105k does not imply that we
// get 100k in one temporal layer and 5k in the other, just that the bitrate
// in the first temporal layer should not exceed 100k.
// TODO(pbos): Apart from a special case for two-layer screencast these
// thresholds are not propagated to the VideoEncoder. To be implemented.
std::vector<int> temporal_layer_thresholds_bps;
struct VideoEncoderConfig {
enum ContentType {
: content_type(kRealtimeVideo),
min_transmit_bitrate_bps(0) {}
std::string ToString() const;
std::vector<VideoStream> streams;
ContentType content_type;
void* encoder_specific_settings;
// Padding will be used up to this bitrate regardless of the bitrate produced
// by the encoder. Padding above what's actually produced by the encoder helps
// maintaining a higher bitrate estimate. Padding will however not be sent
// unless the estimated bandwidth indicates that the link can handle it.
int min_transmit_bitrate_bps;
} // namespace webrtc
#endif // WEBRTC_CONFIG_H_