2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
11 #ifndef WEBRTC_VIDEO_ENGINE_VIE_ENCODER_H_
12 #define WEBRTC_VIDEO_ENGINE_VIE_ENCODER_H_
17 #include "webrtc/common_types.h"
18 #include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
19 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h"
20 #include "webrtc/modules/video_coding/main/interface/video_coding_defines.h"
21 #include "webrtc/modules/video_processing/main/interface/video_processing.h"
22 #include "webrtc/system_wrappers/interface/scoped_ptr.h"
23 #include "webrtc/typedefs.h"
24 #include "webrtc/frame_callback.h"
25 #include "webrtc/video_engine/vie_defines.h"
26 #include "webrtc/video_engine/vie_frame_provider_base.h"
31 class CriticalSectionWrapper;
32 class EncodedImageCallback;
35 class QMVideoSettingsCallback;
37 class ViEBitrateObserver;
38 class ViEEffectFilter;
39 class ViEEncoderObserver;
40 class VideoCodingModule;
41 class ViEPacedSenderCallback;
44 : public RtcpIntraFrameObserver,
45 public VCMPacketizationCallback,
46 public VCMProtectionCallback,
47 public VCMSendStatisticsCallback,
48 public ViEFrameCallback {
50 friend class ViEBitrateObserver;
51 friend class ViEPacedSenderCallback;
53 ViEEncoder(int32_t engine_id,
55 uint32_t number_of_cores,
57 ProcessThread& module_process_thread,
58 BitrateController* bitrate_controller);
63 void SetNetworkTransmissionState(bool is_transmitting);
65 // Returns the id of the owning channel.
68 // Drops incoming packets before they get to the encoder.
73 uint8_t NumberOfCodecs();
74 int32_t GetCodec(uint8_t list_index, VideoCodec* video_codec);
75 int32_t RegisterExternalEncoder(VideoEncoder* encoder,
77 bool internal_source);
78 int32_t DeRegisterExternalEncoder(uint8_t pl_type);
79 int32_t SetEncoder(const VideoCodec& video_codec);
80 int32_t GetEncoder(VideoCodec* video_codec);
82 int32_t GetCodecConfigParameters(
83 unsigned char config_parameters[kConfigParameterSize],
84 unsigned char& config_parameters_size);
86 PacedSender* GetPacedSender();
88 // Scale or crop/pad image.
89 int32_t ScaleInputImage(bool enable);
92 RtpRtcp* SendRtpRtcpModule();
94 // Implementing ViEFrameCallback.
95 virtual void DeliverFrame(int id,
96 I420VideoFrame* video_frame,
98 const uint32_t CSRC[kRtpCsrcSize] = NULL);
99 virtual void DelayChanged(int id, int frame_delay);
100 virtual int GetPreferedFrameSettings(int* width,
104 virtual void ProviderDestroyed(int id) {
108 int32_t SendKeyFrame();
109 int32_t SendCodecStatistics(uint32_t* num_key_frames,
110 uint32_t* num_delta_frames);
112 int32_t EstimatedSendBandwidth(
113 uint32_t* available_bandwidth) const;
115 int CodecTargetBitrate(uint32_t* bitrate) const;
117 int32_t UpdateProtectionMethod(bool enable_nack);
118 bool nack_enabled() const { return nack_enabled_; }
121 void SetSenderBufferingMode(int target_delay_ms);
123 // Implements VCMPacketizationCallback.
124 virtual int32_t SendData(
125 FrameType frame_type,
126 uint8_t payload_type,
128 int64_t capture_time_ms,
129 const uint8_t* payload_data,
130 uint32_t payload_size,
131 const RTPFragmentationHeader& fragmentation_header,
132 const RTPVideoHeader* rtp_video_hdr);
134 // Implements VideoProtectionCallback.
135 virtual int ProtectionRequest(
136 const FecProtectionParams* delta_fec_params,
137 const FecProtectionParams* key_fec_params,
138 uint32_t* sent_video_rate_bps,
139 uint32_t* sent_nack_rate_bps,
140 uint32_t* sent_fec_rate_bps);
142 // Implements VideoSendStatisticsCallback.
143 virtual int32_t SendStatistics(const uint32_t bit_rate,
144 const uint32_t frame_rate);
145 int32_t RegisterCodecObserver(ViEEncoderObserver* observer);
147 // Implements RtcpIntraFrameObserver.
148 virtual void OnReceivedIntraFrameRequest(uint32_t ssrc);
149 virtual void OnReceivedSLI(uint32_t ssrc, uint8_t picture_id);
150 virtual void OnReceivedRPSI(uint32_t ssrc, uint64_t picture_id);
151 virtual void OnLocalSsrcChanged(uint32_t old_ssrc, uint32_t new_ssrc);
153 // Sets SSRCs for all streams.
154 bool SetSsrcs(const std::list<unsigned int>& ssrcs);
157 int32_t RegisterEffectFilter(ViEEffectFilter* effect_filter);
159 // Enables recording of debugging information.
160 virtual int StartDebugRecording(const char* fileNameUTF8);
162 // Disables recording of debugging information.
163 virtual int StopDebugRecording();
165 // Lets the sender suspend video when the rate drops below
166 // |threshold_bps|, and turns back on when the rate goes back up above
167 // |threshold_bps| + |window_bps|.
168 virtual void SuspendBelowMinBitrate();
170 // New-style callbacks, used by VideoSendStream.
171 void RegisterPreEncodeCallback(I420FrameCallback* pre_encode_callback);
172 void DeRegisterPreEncodeCallback();
173 void RegisterPostEncodeImageCallback(
174 EncodedImageCallback* post_encode_callback);
175 void DeRegisterPostEncodeImageCallback();
177 int channel_id() const { return channel_id_; }
180 // Called by BitrateObserver.
181 void OnNetworkChanged(const uint32_t bitrate_bps,
182 const uint8_t fraction_lost,
183 const uint32_t round_trip_time_ms);
185 // Called by PacedSender.
186 bool TimeToSendPacket(uint32_t ssrc, uint16_t sequence_number,
187 int64_t capture_time_ms, bool retransmission);
188 int TimeToSendPadding(int bytes);
190 bool EncoderPaused() const;
193 const int channel_id_;
194 const uint32_t number_of_cores_;
196 VideoCodingModule& vcm_;
197 VideoProcessingModule& vpm_;
198 scoped_ptr<RtpRtcp> default_rtp_rtcp_;
199 scoped_ptr<CriticalSectionWrapper> callback_cs_;
200 scoped_ptr<CriticalSectionWrapper> data_cs_;
201 scoped_ptr<BitrateObserver> bitrate_observer_;
202 scoped_ptr<PacedSender> paced_sender_;
203 scoped_ptr<ViEPacedSenderCallback> pacing_callback_;
205 BitrateController* bitrate_controller_;
207 int64_t time_of_last_incoming_frame_ms_;
209 int target_delay_ms_;
210 bool network_is_transmitting_;
211 bool encoder_paused_;
212 bool encoder_paused_and_dropped_frame_;
213 std::map<unsigned int, int64_t> time_last_intra_request_ms_;
218 ViEEncoderObserver* codec_observer_;
219 ViEEffectFilter* effect_filter_;
220 ProcessThread& module_process_thread_;
222 bool has_received_sli_;
223 uint8_t picture_id_sli_;
224 bool has_received_rpsi_;
225 uint64_t picture_id_rpsi_;
226 std::map<unsigned int, int> ssrc_streams_;
228 // Quality modes callback
229 QMVideoSettingsCallback* qm_callback_;
230 bool video_suspended_;
231 I420FrameCallback* pre_encode_callback_;
234 } // namespace webrtc
236 #endif // WEBRTC_VIDEO_ENGINE_VIE_ENCODER_H_