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94 lines
2.8 KiB
94 lines
2.8 KiB
/* |
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* Ratecontrol |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* Copyright (c) 2002-2004 Michael Niedermayer |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_RATECONTROL_H |
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#define AVCODEC_RATECONTROL_H |
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/** |
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* @file |
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* ratecontrol header. |
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*/ |
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#include <stdio.h> |
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#include <stdint.h> |
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#include "libavutil/eval.h" |
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typedef struct Predictor{ |
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double coeff; |
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double count; |
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double decay; |
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} Predictor; |
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typedef struct RateControlEntry{ |
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int pict_type; |
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float qscale; |
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int mv_bits; |
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int i_tex_bits; |
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int p_tex_bits; |
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int misc_bits; |
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int header_bits; |
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uint64_t expected_bits; |
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int new_pict_type; |
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float new_qscale; |
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int mc_mb_var_sum; |
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int mb_var_sum; |
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int i_count; |
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int skip_count; |
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int f_code; |
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int b_code; |
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}RateControlEntry; |
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/** |
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* rate control context. |
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*/ |
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typedef struct RateControlContext{ |
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int num_entries; ///< number of RateControlEntries |
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RateControlEntry *entry; |
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double buffer_index; ///< amount of bits in the video/audio buffer |
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Predictor pred[5]; |
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double short_term_qsum; ///< sum of recent qscales |
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double short_term_qcount; ///< count of recent qscales |
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double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization |
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double pass1_wanted_bits; ///< bits which should have been output by the pass1 code (including complexity init) |
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double last_qscale; |
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double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff |
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int last_mc_mb_var_sum; |
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int last_mb_var_sum; |
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uint64_t i_cplx_sum[5]; |
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uint64_t p_cplx_sum[5]; |
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uint64_t mv_bits_sum[5]; |
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uint64_t qscale_sum[5]; |
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int frame_count[5]; |
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int last_non_b_pict_type; |
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AVExpr * rc_eq_eval; |
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}RateControlContext; |
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struct MpegEncContext; |
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/* rate control */ |
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int ff_rate_control_init(struct MpegEncContext *s); |
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float ff_rate_estimate_qscale(struct MpegEncContext *s, int dry_run); |
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void ff_rate_control_uninit(struct MpegEncContext *s); |
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int ff_vbv_update(struct MpegEncContext *s, int frame_size); |
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void ff_get_2pass_fcode(struct MpegEncContext *s); |
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#endif /* AVCODEC_RATECONTROL_H */
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