1 /* 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. 3 * 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. 9 * 10 */ 11 12 #ifndef MODULES_VIDEO_CODING_CODECS_H264_H264_ENCODER_IMPL_H_ 13 #define MODULES_VIDEO_CODING_CODECS_H264_H264_ENCODER_IMPL_H_ 14 15 // Everything declared in this header is only required when WebRTC is 16 // build with H264 support, please do not move anything out of the 17 // #ifdef unless needed and tested. 18 #ifdef WEBRTC_USE_H264 19 20 #if defined(WEBRTC_WIN) && !defined(__clang__) 21 #error "See: bugs.webrtc.org/9213#c13." 22 #endif 23 24 #include <memory> 25 #include <vector> 26 27 #include "api/video/i420_buffer.h" 28 #include "api/video_codecs/video_encoder.h" 29 #include "common_video/h264/h264_bitstream_parser.h" 30 #include "modules/video_coding/codecs/h264/include/h264.h" 31 #include "modules/video_coding/utility/quality_scaler.h" 32 #include "third_party/openh264/src/codec/api/svc/codec_app_def.h" 33 34 class ISVCEncoder; 35 36 namespace webrtc { 37 38 class H264EncoderImpl : public H264Encoder { 39 public: 40 struct LayerConfig { 41 int simulcast_idx = 0; 42 int width = -1; 43 int height = -1; 44 bool sending = true; 45 bool key_frame_request = false; 46 float max_frame_rate = 0; 47 uint32_t target_bps = 0; 48 uint32_t max_bps = 0; 49 bool frame_dropping_on = false; 50 int key_frame_interval = 0; 51 int num_temporal_layers = 1; 52 53 void SetStreamState(bool send_stream); 54 }; 55 56 public: 57 explicit H264EncoderImpl(const cricket::VideoCodec& codec); 58 ~H264EncoderImpl() override; 59 60 // |settings.max_payload_size| is ignored. 61 // The following members of |codec_settings| are used. The rest are ignored. 62 // - codecType (must be kVideoCodecH264) 63 // - targetBitrate 64 // - maxFramerate 65 // - width 66 // - height 67 int32_t InitEncode(const VideoCodec* codec_settings, 68 const VideoEncoder::Settings& settings) override; 69 int32_t Release() override; 70 71 int32_t RegisterEncodeCompleteCallback( 72 EncodedImageCallback* callback) override; 73 void SetRates(const RateControlParameters& parameters) override; 74 75 // The result of encoding - an EncodedImage and RTPFragmentationHeader - are 76 // passed to the encode complete callback. 77 int32_t Encode(const VideoFrame& frame, 78 const std::vector<VideoFrameType>* frame_types) override; 79 80 EncoderInfo GetEncoderInfo() const override; 81 82 // Exposed for testing. PacketizationModeForTesting()83 H264PacketizationMode PacketizationModeForTesting() const { 84 return packetization_mode_; 85 } 86 87 private: 88 SEncParamExt CreateEncoderParams(size_t i) const; 89 90 webrtc::H264BitstreamParser h264_bitstream_parser_; 91 // Reports statistics with histograms. 92 void ReportInit(); 93 void ReportError(); 94 95 std::vector<ISVCEncoder*> encoders_; 96 std::vector<SSourcePicture> pictures_; 97 std::vector<rtc::scoped_refptr<I420Buffer>> downscaled_buffers_; 98 std::vector<LayerConfig> configurations_; 99 std::vector<EncodedImage> encoded_images_; 100 101 VideoCodec codec_; 102 H264PacketizationMode packetization_mode_; 103 size_t max_payload_size_; 104 int32_t number_of_cores_; 105 EncodedImageCallback* encoded_image_callback_; 106 107 bool has_reported_init_; 108 bool has_reported_error_; 109 110 std::vector<uint8_t> tl0sync_limit_; 111 }; 112 113 } // namespace webrtc 114 115 #endif // WEBRTC_USE_H264 116 117 #endif // MODULES_VIDEO_CODING_CODECS_H264_H264_ENCODER_IMPL_H_ 118