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-rw-r--r-- | media/libvpx/libvpx/vp9/ratectrl_rtc.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/ratectrl_rtc.h b/media/libvpx/libvpx/vp9/ratectrl_rtc.h new file mode 100644 index 0000000000..7f3c900459 --- /dev/null +++ b/media/libvpx/libvpx/vp9/ratectrl_rtc.h @@ -0,0 +1,111 @@ +/* + * Copyright (c) 2020 The WebM 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. + */ + +#ifndef VPX_VP9_RATECTRL_RTC_H_ +#define VPX_VP9_RATECTRL_RTC_H_ + +#include <cstdint> +#include <memory> + +#include "vp9/common/vp9_entropymode.h" +#include "vp9/common/vp9_enums.h" +#include "vp9/common/vp9_onyxc_int.h" +#include "vp9/vp9_iface_common.h" +#include "vp9/encoder/vp9_aq_cyclicrefresh.h" +#include "vp9/encoder/vp9_firstpass.h" +#include "vp9/vp9_cx_iface.h" +#include "vpx/internal/vpx_ratectrl_rtc.h" +#include "vpx_mem/vpx_mem.h" + +struct VP9_COMP; + +namespace libvpx { +struct VP9RateControlRtcConfig : public VpxRateControlRtcConfig { + public: + VP9RateControlRtcConfig() { + ss_number_layers = 1; + vp9_zero(max_quantizers); + vp9_zero(min_quantizers); + vp9_zero(scaling_factor_den); + vp9_zero(scaling_factor_num); + vp9_zero(layer_target_bitrate); + vp9_zero(ts_rate_decimator); + scaling_factor_num[0] = 1; + scaling_factor_den[0] = 1; + max_quantizers[0] = max_quantizer; + min_quantizers[0] = min_quantizer; + } + + // Number of spatial layers + int ss_number_layers; + int max_quantizers[VPX_MAX_LAYERS]; + int min_quantizers[VPX_MAX_LAYERS]; + int scaling_factor_num[VPX_SS_MAX_LAYERS]; + int scaling_factor_den[VPX_SS_MAX_LAYERS]; +}; + +struct VP9FrameParamsQpRTC { + RcFrameType frame_type; + int spatial_layer_id; + int temporal_layer_id; +}; + +struct VP9SegmentationData { + const uint8_t *segmentation_map; + size_t segmentation_map_size; + const int *delta_q; + size_t delta_q_size; +}; + +// This interface allows using VP9 real-time rate control without initializing +// the encoder. To use this interface, you need to link with libvpxrc.a. +// +// #include "vp9/ratectrl_rtc.h" +// VP9RateControlRtcConfig cfg; +// VP9FrameParamsQpRTC frame_params; +// +// YourFunctionToInitializeConfig(cfg); +// std::unique_ptr<VP9RateControlRTC> rc_api = VP9RateControlRTC::Create(cfg); +// // start encoding +// while (frame_to_encode) { +// if (config_changed) +// rc_api->UpdateRateControl(cfg); +// YourFunctionToFillFrameParams(frame_params); +// rc_api->ComputeQP(frame_params); +// YourFunctionToUseQP(rc_api->GetQP()); +// YourFunctionToUseLoopfilter(rc_api->GetLoopfilterLevel()); +// // After encoding +// rc_api->PostEncode(encoded_frame_size, frame_params); +// } +class VP9RateControlRTC { + public: + static std::unique_ptr<VP9RateControlRTC> Create( + const VP9RateControlRtcConfig &cfg); + ~VP9RateControlRTC(); + + bool UpdateRateControl(const VP9RateControlRtcConfig &rc_cfg); + // GetQP() needs to be called after ComputeQP() to get the latest QP + int GetQP() const; + int GetLoopfilterLevel() const; + bool GetSegmentationData(VP9SegmentationData *segmentation_data) const; + void ComputeQP(const VP9FrameParamsQpRTC &frame_params); + // Feedback to rate control with the size of current encoded frame + void PostEncodeUpdate(uint64_t encoded_frame_size, + const VP9FrameParamsQpRTC &frame_params); + + private: + VP9RateControlRTC() {} + bool InitRateControl(const VP9RateControlRtcConfig &cfg); + struct VP9_COMP *cpi_; +}; + +} // namespace libvpx + +#endif // VPX_VP9_RATECTRL_RTC_H_ |