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libavcodec
h264dsp.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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/**
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* @file
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* H.264 DSP functions.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#ifndef AVCODEC_H264DSP_H
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#define AVCODEC_H264DSP_H
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#include <stdint.h>
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typedef
void
(*
h264_weight_func
)(
uint8_t
*
block
,
int
stride
,
int
height
,
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int
log2_denom,
int
weight
,
int
offset
);
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typedef
void
(*
h264_biweight_func
)(
uint8_t
*dst,
uint8_t
*
src
,
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int
stride
,
int
height
,
int
log2_denom,
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int
weightd,
int
weights,
int
offset
);
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/**
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* Context for storing H.264 DSP functions
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*/
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typedef
struct
H264DSPContext
{
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/* weighted MC */
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h264_weight_func
weight_h264_pixels_tab
[4];
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h264_biweight_func
biweight_h264_pixels_tab
[4];
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/* loop filter */
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void
(*
h264_v_loop_filter_luma
)(
uint8_t
*pix
/*align 16*/
,
int
stride
,
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int
alpha
,
int
beta, int8_t *tc0);
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void
(*
h264_h_loop_filter_luma
)(
uint8_t
*pix
/*align 4 */
,
int
stride
,
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int
alpha
,
int
beta, int8_t *tc0);
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void
(*
h264_h_loop_filter_luma_mbaff
)(
uint8_t
*pix
/*align 16*/
,
int
stride
,
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int
alpha
,
int
beta, int8_t *tc0);
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/* v/h_loop_filter_luma_intra: align 16 */
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void
(*
h264_v_loop_filter_luma_intra
)(
uint8_t
*pix,
int
stride
,
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int
alpha
,
int
beta);
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void
(*
h264_h_loop_filter_luma_intra
)(
uint8_t
*pix,
int
stride
,
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int
alpha
,
int
beta);
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void
(*
h264_h_loop_filter_luma_mbaff_intra
)(
uint8_t
*pix
/*align 16*/
,
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int
stride
,
int
alpha
,
int
beta);
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void
(*
h264_v_loop_filter_chroma
)(
uint8_t
*pix
/*align 8*/
,
int
stride
,
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int
alpha
,
int
beta, int8_t *tc0);
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void
(*
h264_h_loop_filter_chroma
)(
uint8_t
*pix
/*align 4*/
,
int
stride
,
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int
alpha
,
int
beta, int8_t *tc0);
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void
(*
h264_h_loop_filter_chroma_mbaff
)(
uint8_t
*pix
/*align 8*/
,
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int
stride
,
int
alpha
,
int
beta,
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int8_t *tc0);
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void
(*
h264_v_loop_filter_chroma_intra
)(
uint8_t
*pix
/*align 8*/
,
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int
stride
,
int
alpha
,
int
beta);
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void
(*
h264_h_loop_filter_chroma_intra
)(
uint8_t
*pix
/*align 8*/
,
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int
stride
,
int
alpha
,
int
beta);
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void
(*
h264_h_loop_filter_chroma_mbaff_intra
)(
uint8_t
*pix
/*align 8*/
,
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int
stride
,
int
alpha
,
int
beta);
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// h264_loop_filter_strength: simd only. the C version is inlined in h264.c
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void
(*
h264_loop_filter_strength
)(int16_t bS[2][4][4],
uint8_t
nnz[40],
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int8_t ref[2][40], int16_t
mv
[2][40][2],
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int
bidir,
int
edges,
int
step,
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int
mask_mv0,
int
mask_mv1,
int
field);
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/* IDCT */
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void
(*
h264_idct_add
)(
uint8_t
*dst
/*align 4*/
,
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int16_t *
block
/*align 16*/
,
int
stride
);
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void
(*
h264_idct8_add
)(
uint8_t
*dst
/*align 8*/
,
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int16_t *
block
/*align 16*/
,
int
stride
);
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void
(*
h264_idct_dc_add
)(
uint8_t
*dst
/*align 4*/
,
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int16_t *
block
/*align 16*/
,
int
stride
);
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void
(*
h264_idct8_dc_add
)(
uint8_t
*dst
/*align 8*/
,
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int16_t *
block
/*align 16*/
,
int
stride
);
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void
(*
h264_idct_add16
)(
uint8_t
*dst
/*align 16*/
,
const
int
*blockoffset,
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int16_t *
block
/*align 16*/
,
int
stride
,
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const
uint8_t
nnzc[15 * 8]);
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void
(*
h264_idct8_add4
)(
uint8_t
*dst
/*align 16*/
,
const
int
*blockoffset,
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int16_t *
block
/*align 16*/
,
int
stride
,
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const
uint8_t
nnzc[15 * 8]);
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void
(*
h264_idct_add8
)(
uint8_t
**dst
/*align 16*/
,
const
int
*blockoffset,
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int16_t *
block
/*align 16*/
,
int
stride
,
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const
uint8_t
nnzc[15 * 8]);
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void
(*
h264_idct_add16intra
)(
uint8_t
*dst
/*align 16*/
,
const
int
*blockoffset,
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int16_t *
block
/*align 16*/
,
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int
stride
,
const
uint8_t
nnzc[15 * 8]);
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void
(*
h264_luma_dc_dequant_idct
)(int16_t *output,
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int16_t *input
/*align 16*/
,
int
qmul);
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void
(*
h264_chroma_dc_dequant_idct
)(int16_t *
block
,
int
qmul);
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/* bypass-transform */
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void
(*
h264_add_pixels8_clear
)(
uint8_t
*dst, int16_t *
block
,
int
stride
);
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void
(*
h264_add_pixels4_clear
)(
uint8_t
*dst, int16_t *
block
,
int
stride
);
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/**
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* Search buf from the start for up to size bytes. Return the index
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* of a zero byte, or >= size if not found. Ideally, use lookahead
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* to filter out any zero bytes that are known to not be followed by
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* one or more further zero bytes and a one byte. Better still, filter
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* out any bytes that form the trailing_zero_8bits syntax element too.
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*/
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int (*
startcode_find_candidate
)(
const
uint8_t
*
buf
,
int
size
);
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}
H264DSPContext
;
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void
ff_h264dsp_init
(
H264DSPContext
*
c
,
const
int
bit_depth,
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const
int
chroma_format_idc);
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void
ff_h264dsp_init_aarch64
(
H264DSPContext
*
c
,
const
int
bit_depth,
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const
int
chroma_format_idc);
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void
ff_h264dsp_init_arm
(
H264DSPContext
*
c
,
const
int
bit_depth,
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const
int
chroma_format_idc);
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void
ff_h264dsp_init_ppc
(
H264DSPContext
*
c
,
const
int
bit_depth,
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const
int
chroma_format_idc);
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void
ff_h264dsp_init_x86
(
H264DSPContext
*
c
,
const
int
bit_depth,
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const
int
chroma_format_idc);
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#endif
/* AVCODEC_H264DSP_H */
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