2 * Copyright (c) 2003-2010 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
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.
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.
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
23 * H.264 DSP functions.
24 * @author Michael Niedermayer <michaelni@gmx.at>
27 #ifndef AVCODEC_H264DSP_H
28 #define AVCODEC_H264DSP_H
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);
40 * Context for storing H.264 DSP functions
42 typedef struct H264DSPContext {
44 h264_weight_func weight_h264_pixels_tab[4];
45 h264_biweight_func biweight_h264_pixels_tab[4];
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,
57 void (*h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride,
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,
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);
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);
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);
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);
111 * Search buf from the start for up to size bytes. Return the index
112 * of a zero byte, or >= size if not found. Ideally, use lookahead
113 * to filter out any zero bytes that are known to not be followed by
114 * one or more further zero bytes and a one byte. Better still, filter
115 * out any bytes that form the trailing_zero_8bits syntax element too.
117 int (*startcode_find_candidate)(const uint8_t *buf, int size);
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);
133 #endif /* AVCODEC_H264DSP_H */