81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_ENCODER_VP9_RATECTRL_H_
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#define VP9_ENCODER_VP9_RATECTRL_H_
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#include "vp9/encoder/vp9_onyx_int.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define FRAME_OVERHEAD_BITS 200
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void vp9_save_coding_context(VP9_COMP *cpi);
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void vp9_restore_coding_context(VP9_COMP *cpi);
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void vp9_setup_key_frame(VP9_COMP *cpi);
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void vp9_setup_inter_frame(VP9_COMP *cpi);
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double vp9_convert_qindex_to_q(int qindex);
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// Updates rate correction factors
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void vp9_rc_update_rate_correction_factors(VP9_COMP *cpi, int damp_var);
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// initialize luts for minq
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void vp9_rc_init_minq_luts(void);
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// return of 0 means drop frame
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// Changes only rc.this_frame_target and rc.sb64_rate_target
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int vp9_rc_pick_frame_size_target(VP9_COMP *cpi);
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void vp9_rc_compute_frame_size_bounds(const VP9_COMP *cpi,
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int this_frame_target,
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int *frame_under_shoot_limit,
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int *frame_over_shoot_limit);
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// Picks q and q bounds given the target for bits
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int vp9_rc_pick_q_and_adjust_q_bounds(const VP9_COMP *cpi,
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int *bottom_index,
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int *top_index);
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// Estimates q to achieve a target bits per frame
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int vp9_rc_regulate_q(const VP9_COMP *cpi, int target_bits_per_frame,
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int active_best_quality, int active_worst_quality);
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// Post encode update of the rate control parameters based
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// on bytes used
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void vp9_rc_postencode_update(VP9_COMP *cpi,
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uint64_t bytes_used);
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// for dropped frames
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void vp9_rc_postencode_update_drop_frame(VP9_COMP *cpi);
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// estimates bits per mb for a given qindex and correction factor
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int vp9_rc_bits_per_mb(FRAME_TYPE frame_type, int qindex,
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double correction_factor);
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// Post encode update of the rate control parameters for 2-pass
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void vp9_twopass_postencode_update(VP9_COMP *cpi,
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uint64_t bytes_used);
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// Decide if we should drop this frame: For 1-pass CBR.
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int vp9_drop_frame(VP9_COMP *cpi);
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// Update the buffer level.
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void vp9_update_buffer_level(VP9_COMP *cpi, int encoded_frame_size);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_ENCODER_VP9_RATECTRL_H_
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