1 /*****************************************************************************
2 * macroblock.h: h264 encoder library
3 *****************************************************************************
4 * Copyright (C) 2003 Laurent Aimar
5 * $Id: macroblock.h,v 1.1 2004/06/03 19:27:07 fenrir Exp $
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
25 #define _MACROBLOCK_H 1
27 enum macroblock_position_e
39 static const int x264_pred_i4x4_neighbors[12] =
41 MB_TOP, // I_PRED_4x4_V
42 MB_LEFT, // I_PRED_4x4_H
43 MB_LEFT | MB_TOP, // I_PRED_4x4_DC
44 MB_TOP | MB_TOPRIGHT, // I_PRED_4x4_DDL
45 MB_LEFT | MB_TOPLEFT | MB_TOP, // I_PRED_4x4_DDR
46 MB_LEFT | MB_TOPLEFT | MB_TOP, // I_PRED_4x4_VR
47 MB_LEFT | MB_TOPLEFT | MB_TOP, // I_PRED_4x4_HD
48 MB_TOP | MB_TOPRIGHT, // I_PRED_4x4_VL
49 MB_LEFT, // I_PRED_4x4_HU
50 MB_LEFT, // I_PRED_4x4_DC_LEFT
51 MB_TOP, // I_PRED_4x4_DC_TOP
52 0 // I_PRED_4x4_DC_128
56 /* XXX mb_type isn't the one written in the bitstream -> only internal usage */
57 #define IS_INTRA(type) ( (type) == I_4x4 || (type) == I_8x8 || (type) == I_16x16 )
58 #define IS_SKIP(type) ( (type) == P_SKIP || (type) == B_SKIP )
59 #define IS_DIRECT(type) ( (type) == B_DIRECT )
84 static const int x264_mb_type_fix[19] =
86 I_4x4, I_4x4, I_16x16, I_PCM,
88 B_DIRECT, B_L0_L0, B_L0_L1, B_L0_BI, B_L1_L0, B_L1_L1,
89 B_L1_BI, B_BI_L0, B_BI_L1, B_BI_BI, B_8x8, B_SKIP
91 static const int x264_mb_type_list0_table[19][2] =
93 {0,0}, {0,0}, {0,0}, {0,0}, /* INTRA */
98 {1,1}, {1,0}, {1,1}, /* B_L0_* */
99 {0,1}, {0,0}, {0,1}, /* B_L1_* */
100 {1,1}, {1,0}, {1,1}, /* B_BI_* */
104 static const int x264_mb_type_list1_table[19][2] =
106 {0,0}, {0,0}, {0,0}, {0,0}, /* INTRA */
110 {0,0}, /* B_DIRECT */
111 {0,0}, {0,1}, {0,1}, /* B_L0_* */
112 {1,0}, {1,1}, {1,1}, /* B_L1_* */
113 {1,0}, {1,1}, {1,1}, /* B_BI_* */
118 #define IS_SUB4x4(type) ( (type ==D_L0_4x4)||(type ==D_L1_4x4)||(type ==D_BI_4x4))
119 #define IS_SUB4x8(type) ( (type ==D_L0_4x8)||(type ==D_L1_4x8)||(type ==D_BI_4x8))
120 #define IS_SUB8x4(type) ( (type ==D_L0_8x4)||(type ==D_L1_8x4)||(type ==D_BI_8x4))
121 #define IS_SUB8x8(type) ( (type ==D_L0_8x8)||(type ==D_L1_8x8)||(type ==D_BI_8x8)||(type ==D_DIRECT_8x8))
124 /* sub partition type for P_8x8 and B_8x8 */
130 /* sub partition type for B_8x8 only */
149 static const int x264_mb_partition_listX_table[2][17] =
151 1, 1, 1, 1, /* D_L0_* */
152 0, 0, 0, 0, /* D_L1_* */
153 1, 1, 1, 1, /* D_BI_* */
154 0, /* D_DIRECT_8x8 */
155 0, 0, 0, 0 /* 8x8 .. 16x16 */
158 0, 0, 0, 0, /* D_L0_* */
159 1, 1, 1, 1, /* D_L1_* */
160 1, 1, 1, 1, /* D_BI_* */
161 0, /* D_DIRECT_8x8 */
162 0, 0, 0, 0 /* 8x8 .. 16x16 */
164 static const int x264_mb_partition_count_table[17] =
177 static const int x264_mb_partition_pixel_table[17] =
179 6, 4, 5, 3, 6, 4, 5, 3, 6, 4, 5, 3, 3, 3, 1, 2, 0
182 /* zigzags are transposed with respect to the tables in the standard */
183 static const int x264_zigzag_scan4[16] =
185 0, 4, 1, 2, 5, 8, 12, 9, 6, 3, 7, 10, 13, 14, 11, 15
187 static const int x264_zigzag_scan8[64] =
189 0, 8, 1, 2, 9, 16, 24, 17, 10, 3, 4, 11, 18, 25, 32, 40,
190 33, 26, 19, 12, 5, 6, 13, 20, 27, 34, 41, 48, 56, 49, 42, 35,
191 28, 21, 14, 7, 15, 22, 29, 36, 43, 50, 57, 58, 51, 44, 37, 30,
192 23, 31, 38, 45, 52, 59, 60, 53, 46, 39, 47, 54, 61, 62, 55, 63
195 static const uint8_t block_idx_x[16] =
197 0, 1, 0, 1, 2, 3, 2, 3, 0, 1, 0, 1, 2, 3, 2, 3
199 static const uint8_t block_idx_y[16] =
201 0, 0, 1, 1, 0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3
203 static const uint8_t block_idx_xy[4][4] =
211 static const int i_chroma_qp_table[52] =
213 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
214 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
215 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
216 29, 30, 31, 32, 32, 33, 34, 34, 35, 35,
217 36, 36, 37, 37, 37, 38, 38, 38, 39, 39,
221 enum cabac_ctx_block_cat_e
232 void x264_macroblock_cache_init( x264_t *h );
233 void x264_macroblock_slice_init( x264_t *h );
234 void x264_macroblock_cache_load( x264_t *h, int i_mb_x, int i_mb_y );
235 void x264_macroblock_cache_save( x264_t *h );
236 void x264_macroblock_cache_end( x264_t *h );
238 void x264_macroblock_bipred_init( x264_t *h );
240 /* x264_mb_predict_mv_16x16:
241 * set mvp with predicted mv for D_16x16 block
242 * h->mb. need only valid values from other blocks */
243 void x264_mb_predict_mv_16x16( x264_t *h, int i_list, int i_ref, int mvp[2] );
244 /* x264_mb_predict_mv_pskip:
245 * set mvp with predicted mv for P_SKIP
246 * h->mb. need only valid values from other blocks */
247 void x264_mb_predict_mv_pskip( x264_t *h, int mv[2] );
248 /* x264_mb_predict_mv:
249 * set mvp with predicted mv for all blocks except SKIP and DIRECT
250 * h->mb. need valid ref/partition/sub of current block to be valid
251 * and valid mv/ref from other blocks. */
252 void x264_mb_predict_mv( x264_t *h, int i_list, int idx, int i_width, int mvp[2] );
253 /* x264_mb_predict_mv_direct16x16:
254 * set h->mb.cache.mv and h->mb.cache.ref for B_SKIP or B_DIRECT
255 * h->mb. need only valid values from other blocks.
256 * return 1 on success, 0 on failure.
257 * if b_changed != NULL, set it to whether refs or mvs differ from
258 * before this functioncall. */
259 int x264_mb_predict_mv_direct16x16( x264_t *h, int *b_changed );
260 /* x264_mb_load_mv_direct8x8:
261 * set h->mb.cache.mv and h->mb.cache.ref for B_DIRECT
262 * must be called only after x264_mb_predict_mv_direct16x16 */
263 void x264_mb_load_mv_direct8x8( x264_t *h, int idx );
264 /* x264_mb_predict_mv_ref16x16:
265 * set mvc with D_16x16 prediction.
266 * uses all neighbors, even those that didn't end up using this ref.
267 * h->mb. need only valid values from other blocks */
268 void x264_mb_predict_mv_ref16x16( x264_t *h, int i_list, int i_ref, int mvc[8][2], int *i_mvc );
271 int x264_mb_predict_intra4x4_mode( x264_t *h, int idx );
272 int x264_mb_predict_non_zero_code( x264_t *h, int idx );
274 /* x264_mb_transform_8x8_allowed:
275 * check whether any partition is smaller than 8x8 (or at least
276 * might be, according to just partition type.)
277 * doesn't check for intra or cbp */
278 int x264_mb_transform_8x8_allowed( x264_t *h );
280 void x264_mb_encode_i4x4( x264_t *h, int idx, int i_qscale );
281 void x264_mb_encode_i8x8( x264_t *h, int idx, int i_qscale );
283 void x264_mb_mc( x264_t *h );
284 void x264_mb_mc_8x8( x264_t *h, int i8 );
287 static inline void x264_macroblock_cache_ref( x264_t *h, int x, int y, int width, int height, int i_list, int ref )
290 for( dy = 0; dy < height; dy++ )
292 for( dx = 0; dx < width; dx++ )
294 h->mb.cache.ref[i_list][X264_SCAN8_0+x+dx+8*(y+dy)] = ref;
298 static inline void x264_macroblock_cache_mv( x264_t *h, int x, int y, int width, int height, int i_list, int mvx, int mvy )
301 for( dy = 0; dy < height; dy++ )
303 for( dx = 0; dx < width; dx++ )
305 h->mb.cache.mv[i_list][X264_SCAN8_0+x+dx+8*(y+dy)][0] = mvx;
306 h->mb.cache.mv[i_list][X264_SCAN8_0+x+dx+8*(y+dy)][1] = mvy;
310 static inline void x264_macroblock_cache_mvd( x264_t *h, int x, int y, int width, int height, int i_list, int mdx, int mdy )
313 for( dy = 0; dy < height; dy++ )
315 for( dx = 0; dx < width; dx++ )
317 h->mb.cache.mvd[i_list][X264_SCAN8_0+x+dx+8*(y+dy)][0] = mdx;
318 h->mb.cache.mvd[i_list][X264_SCAN8_0+x+dx+8*(y+dy)][1] = mdy;
322 static inline void x264_macroblock_cache_skip( x264_t *h, int x, int y, int width, int height, int b_skip )
325 for( dy = 0; dy < height; dy++ )
327 for( dx = 0; dx < width; dx++ )
329 h->mb.cache.skip[X264_SCAN8_0+x+dx+8*(y+dy)] = b_skip;
333 static inline void x264_macroblock_cache_intra8x8_pred( x264_t *h, int x, int y, int i_mode )
335 int *cache = &h->mb.cache.intra4x4_pred_mode[X264_SCAN8_0+x+8*y];
336 cache[0] = cache[1] = cache[8] = cache[9] = i_mode;