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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.
*/
/*!\file
* \brief Declares frame encoding functions.
*/
#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"
/*!\brief Implement high-level encode strategy
*
* \ingroup high_level_algo
* \callgraph
* \callergraph
* This function will implement high-level encode strategy, choosing frame type,
* frame placement, etc. It populates an EncodeFrameParams struct with the
* results of these decisions and then encodes the frame. The caller should use
* the output parameters *time_stamp and *time_end only when this function
* returns AOM_CODEC_OK.
*
* \param[in] cpi Top-level encoder structure
* \param[in] size Bitstream size
* \param[in] dest Bitstream output
* \param[in] frame_flags Flags to decide how to encoding the frame
* \param[out] time_stamp Time stamp of the frame
* \param[out] time_end Time end
* \param[in] timestamp_ratio Time base
* \param[in] flush Decide to encode one frame or the rest of frames
*
* \return Returns a value to indicate if the encoding is done successfully.
* \retval #AOM_CODEC_OK
* \retval -1
* \retval #AOM_CODEC_ERROR
*/
int av1_encode_strategy(AV1_COMP *const cpi, size_t *const size,
uint8_t *const dest, unsigned int *frame_flags,
int64_t *const time_stamp, int64_t *const time_end,
const aom_rational64_t *const timestamp_ratio,
int flush);
/*!\cond */
// 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, RefreshFrameFlagsInfo *const refresh_frame_flags,
const FRAME_UPDATE_TYPE type, const FRAME_TYPE frame_type,
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,
#if CONFIG_FRAME_PARALLEL_ENCODE
int cur_disp_order,
RefFrameMapPair ref_frame_map_pairs[REF_FRAMES],
#endif // CONFIG_FRAME_PARALLEL_ENCODE
const RefBufferStack *const ref_buffer_stack);
int av1_get_refresh_ref_frame_map(int refresh_frame_flags);
void av1_update_ref_frame_map(AV1_COMP *cpi,
FRAME_UPDATE_TYPE frame_update_type,
FRAME_TYPE frame_type, int show_existing_frame,
int ref_map_index,
RefBufferStack *ref_buffer_stack);
/*!\brief Obtain indices of reference frames from reference frame buffer stacks
*
* \callgraph
* \callergraph
*
* \param[in] ref_buffer_stack Data structure for reference frame buffer
* stacks.
* \param[out] remapped_ref_idx An array for storing indices of reference
* frames. The index is used to retrieve a
* reference frame buffer from ref_frame_map
* in AV1Common.
*/
void av1_get_ref_frames(const RefBufferStack *ref_buffer_stack,
#if CONFIG_FRAME_PARALLEL_ENCODE
AV1_COMP *cpi,
RefFrameMapPair ref_frame_map_pairs[REF_FRAMES],
int cur_frame_disp,
#endif // CONFIG_FRAME_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);
/*!\endcond */
#ifdef __cplusplus
} // extern "C"
#endif
#endif // AOM_AV1_ENCODER_ENCODE_STRATEGY_H_
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