FFmpeg
h264dsp.h
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1 /*
2  * Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
27 #ifndef AVCODEC_H264DSP_H
28 #define AVCODEC_H264DSP_H
29 
30 #include <stdint.h>
31 #include <stddef.h>
32 
33 typedef void (*h264_weight_func)(uint8_t *block, ptrdiff_t stride, int height,
34  int log2_denom, int weight, int offset);
35 typedef void (*h264_biweight_func)(uint8_t *dst, uint8_t *src,
36  ptrdiff_t stride, int height, int log2_denom,
37  int weightd, int weights, int offset);
38 
42 typedef struct H264DSPContext {
43  /* weighted MC */
44  h264_weight_func weight_h264_pixels_tab[4];
45  h264_biweight_func biweight_h264_pixels_tab[4];
46 
47  /* loop filter */
48  void (*h264_v_loop_filter_luma)(uint8_t *pix /*align 16*/, int stride,
49  int alpha, int beta, int8_t *tc0);
50  void (*h264_h_loop_filter_luma)(uint8_t *pix /*align 4 */, int stride,
51  int alpha, int beta, int8_t *tc0);
52  void (*h264_h_loop_filter_luma_mbaff)(uint8_t *pix /*align 16*/, int stride,
53  int alpha, int beta, int8_t *tc0);
54  /* v/h_loop_filter_luma_intra: align 16 */
55  void (*h264_v_loop_filter_luma_intra)(uint8_t *pix, int stride,
56  int alpha, int beta);
57  void (*h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride,
58  int alpha, int beta);
59  void (*h264_h_loop_filter_luma_mbaff_intra)(uint8_t *pix /*align 16*/,
60  int stride, int alpha, int beta);
61  void (*h264_v_loop_filter_chroma)(uint8_t *pix /*align 8*/, int stride,
62  int alpha, int beta, int8_t *tc0);
63  void (*h264_h_loop_filter_chroma)(uint8_t *pix /*align 4*/, int stride,
64  int alpha, int beta, int8_t *tc0);
65  void (*h264_h_loop_filter_chroma_mbaff)(uint8_t *pix /*align 8*/,
66  int stride, int alpha, int beta,
67  int8_t *tc0);
68  void (*h264_v_loop_filter_chroma_intra)(uint8_t *pix /*align 8*/,
69  int stride, int alpha, int beta);
70  void (*h264_h_loop_filter_chroma_intra)(uint8_t *pix /*align 8*/,
71  int stride, int alpha, int beta);
72  void (*h264_h_loop_filter_chroma_mbaff_intra)(uint8_t *pix /*align 8*/,
73  int stride, int alpha, int beta);
74  // h264_loop_filter_strength: simd only. the C version is inlined in h264_loopfilter.c
75  void (*h264_loop_filter_strength)(int16_t bS[2][4][4], uint8_t nnz[40],
76  int8_t ref[2][40], int16_t mv[2][40][2],
77  int bidir, int edges, int step,
78  int mask_mv0, int mask_mv1, int field);
79 
80  /* IDCT */
81  void (*h264_idct_add)(uint8_t *dst /*align 4*/,
82  int16_t *block /*align 16*/, int stride);
83  void (*h264_idct8_add)(uint8_t *dst /*align 8*/,
84  int16_t *block /*align 16*/, int stride);
85  void (*h264_idct_dc_add)(uint8_t *dst /*align 4*/,
86  int16_t *block /*align 16*/, int stride);
87  void (*h264_idct8_dc_add)(uint8_t *dst /*align 8*/,
88  int16_t *block /*align 16*/, int stride);
89 
90  void (*h264_idct_add16)(uint8_t *dst /*align 16*/, const int *blockoffset,
91  int16_t *block /*align 16*/, int stride,
92  const uint8_t nnzc[15 * 8]);
93  void (*h264_idct8_add4)(uint8_t *dst /*align 16*/, const int *blockoffset,
94  int16_t *block /*align 16*/, int stride,
95  const uint8_t nnzc[15 * 8]);
96  void (*h264_idct_add8)(uint8_t **dst /*align 16*/, const int *blockoffset,
97  int16_t *block /*align 16*/, int stride,
98  const uint8_t nnzc[15 * 8]);
99  void (*h264_idct_add16intra)(uint8_t *dst /*align 16*/, const int *blockoffset,
100  int16_t *block /*align 16*/,
101  int stride, const uint8_t nnzc[15 * 8]);
102  void (*h264_luma_dc_dequant_idct)(int16_t *output,
103  int16_t *input /*align 16*/, int qmul);
104  void (*h264_chroma_dc_dequant_idct)(int16_t *block, int qmul);
105 
106  /* bypass-transform */
107  void (*h264_add_pixels8_clear)(uint8_t *dst, int16_t *block, int stride);
108  void (*h264_add_pixels4_clear)(uint8_t *dst, int16_t *block, int stride);
109 
117  int (*startcode_find_candidate)(const uint8_t *buf, int size);
118 } H264DSPContext;
119 
120 void ff_h264dsp_init(H264DSPContext *c, const int bit_depth,
121  const int chroma_format_idc);
122 void ff_h264dsp_init_aarch64(H264DSPContext *c, const int bit_depth,
123  const int chroma_format_idc);
124 void ff_h264dsp_init_arm(H264DSPContext *c, const int bit_depth,
125  const int chroma_format_idc);
126 void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth,
127  const int chroma_format_idc);
128 void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth,
129  const int chroma_format_idc);
130 void ff_h264dsp_init_mips(H264DSPContext *c, const int bit_depth,
131  const int chroma_format_idc);
132 
133 #endif /* AVCODEC_H264DSP_H */
H264DSPContext::startcode_find_candidate
int(* startcode_find_candidate)(const uint8_t *buf, int size)
Search buf from the start for up to size bytes.
Definition: h264dsp.h:117
H264DSPContext
Context for storing H.264 DSP functions.
Definition: h264dsp.h:42
H264DSPContext
struct H264DSPContext H264DSPContext
Context for storing H.264 DSP functions.
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