encode_strategy.h
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/*
* Copyright (c) 2019, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#ifndef AOM_AV1_ENCODER_ENCODE_STRATEGY_H_
#define AOM_AV1_ENCODER_ENCODE_STRATEGY_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stdint.h>
#include "aom/aom_encoder.h"
#include "av1/encoder/encoder.h"
#include "av1/encoder/firstpass.h"
int av1_encode_strategy(AV1_COMP *const cpi, size_t *const size,
uint8_t *const dest, size_t dest_size,
unsigned int *frame_flags, int64_t *const time_stamp,
int64_t *const time_end,
const aom_rational64_t *const timestamp_ratio,
int *const pop_lookahead, int flush);
// Set individual buffer update flags based on frame reference type.
// force_refresh_all is used when we have a KEY_FRAME or S_FRAME. It forces all
// refresh_*_frame flags to be set, because we refresh all buffers in this case.
void av1_configure_buffer_updates(AV1_COMP *const cpi,
RefreshFrameInfo *const refresh_frame,
const FRAME_UPDATE_TYPE type,
const REFBUF_STATE refbuf_state,
int force_refresh_all);
int av1_get_refresh_frame_flags(
const AV1_COMP *const cpi, const EncodeFrameParams *const frame_params,
FRAME_UPDATE_TYPE frame_update_type, int gf_index, int cur_disp_order,
RefFrameMapPair ref_frame_map_pairs[REF_FRAMES]);
int av1_get_refresh_ref_frame_map(int refresh_frame_flags);
void av1_get_ref_frames(RefFrameMapPair ref_frame_map_pairs[REF_FRAMES],
int cur_frame_disp, const AV1_COMP *cpi, int gf_index,
int is_parallel_encode,
int remapped_ref_idx[REF_FRAMES]);
int is_forced_keyframe_pending(struct lookahead_ctx *lookahead,
const int up_to_index,
const COMPRESSOR_STAGE compressor_stage);
static inline int is_frame_droppable(
const RTC_REF *const rtc_ref,
const ExtRefreshFrameFlagsInfo *const ext_refresh_frame_flags) {
// Droppable frame is only used by external refresh flags. VoD setting won't
// trigger its use case.
if (rtc_ref->set_ref_frame_config)
return rtc_ref->non_reference_frame;
else if (ext_refresh_frame_flags->update_pending)
return !(ext_refresh_frame_flags->alt_ref_frame ||
ext_refresh_frame_flags->alt2_ref_frame ||
ext_refresh_frame_flags->bwd_ref_frame ||
ext_refresh_frame_flags->golden_frame ||
ext_refresh_frame_flags->last_frame);
else
return 0;
}
static inline int get_current_frame_ref_type(const AV1_COMP *const cpi) {
// We choose the reference "type" of this frame from the flags which indicate
// which reference frames will be refreshed by it. More than one of these
// flags may be set, so the order here implies an order of precedence. This is
// just used to choose the primary_ref_frame (as the most recent reference
// buffer of the same reference-type as the current frame).
switch (cpi->ppi->gf_group.layer_depth[cpi->gf_frame_index]) {
case 0: return 0;
case 1: return 1;
case MAX_ARF_LAYERS:
case MAX_ARF_LAYERS + 1: return 4;
default: return 7;
}
}
int av1_calc_refresh_idx_for_intnl_arf(
AV1_COMP *cpi, RefFrameMapPair ref_frame_map_pairs[REF_FRAMES],
int gf_index);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_ENCODE_STRATEGY_H_
aom_encoder.h
Describes the encoder algorithm interface to applications.
encoder.h
Declares top-level encoder structures and functions.
av1_encode_strategy
int av1_encode_strategy(AV1_COMP *const cpi, size_t *const size, uint8_t *const dest, size_t dest_size, unsigned int *frame_flags, int64_t *const time_stamp, int64_t *const time_end, const aom_rational64_t *const timestamp_ratio, int *const pop_lookahead, int flush)
Implement high-level encode strategy.
Definition encode_strategy.c:1250
AV1_COMP
Top level encoder structure.
Definition encoder.h:2897
AV1_COMP::gf_frame_index
unsigned char gf_frame_index
Definition encoder.h:3155
AV1_COMP::ppi
AV1_PRIMARY * ppi
Definition encoder.h:2901
AV1_PRIMARY::gf_group
GF_GROUP gf_group
Definition encoder.h:2710
EncodeFrameParams
contains per-frame encoding parameters decided upon by av1_encode_strategy() and passed down to av1_e...
Definition encoder.h:3747
ExtRefreshFrameFlagsInfo
Frame refresh flags set by the external interface.
Definition encoder.h:2274
ExtRefreshFrameFlagsInfo::golden_frame
bool golden_frame
Definition encoder.h:2276
ExtRefreshFrameFlagsInfo::bwd_ref_frame
bool bwd_ref_frame
Definition encoder.h:2277
ExtRefreshFrameFlagsInfo::update_pending
bool update_pending
Definition encoder.h:2283
ExtRefreshFrameFlagsInfo::last_frame
bool last_frame
Definition encoder.h:2275
ExtRefreshFrameFlagsInfo::alt_ref_frame
bool alt_ref_frame
Definition encoder.h:2279
ExtRefreshFrameFlagsInfo::alt2_ref_frame
bool alt2_ref_frame
Definition encoder.h:2278
RefreshFrameInfo
Refresh frame flags for different type of frames.
Definition encoder.h:2170