5 static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n, int height,
6 int y_offset, int list){
7 int raw_my= h->mv_cache[list][ scan8[n] ][1];
8 int filter_height= (raw_my&3) ? 2 : 0;
9 int full_my= (raw_my>>2) + y_offset;
10 int top = full_my - filter_height, bottom = full_my + height + filter_height;
12 return FFMAX(abs(top), bottom);
15 static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, int height,
16 int y_offset, int list0, int list1, int *nrefs){
17 MpegEncContext * const s = &h->s;
20 y_offset += 16*(s->mb_y >> MB_FIELD);
23 int ref_n = h->ref_cache[0][ scan8[n] ];
24 Picture *ref= &h->ref_list[0][ref_n];
26 // Error resilience puts the current picture in the ref list.
27 // Don't try to wait on these as it will cause a deadlock.
28 // Fields can wait on each other, though.
29 if(ref->thread_opaque != s->current_picture.thread_opaque ||
30 (ref->reference&3) != s->picture_structure) {
31 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
32 if (refs[0][ref_n] < 0) nrefs[0] += 1;
33 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
38 int ref_n = h->ref_cache[1][ scan8[n] ];
39 Picture *ref= &h->ref_list[1][ref_n];
41 if(ref->thread_opaque != s->current_picture.thread_opaque ||
42 (ref->reference&3) != s->picture_structure) {
43 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
44 if (refs[1][ref_n] < 0) nrefs[1] += 1;
45 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
51 * Wait until all reference frames are available for MC operations.
53 * @param h the H264 context
55 static void await_references(H264Context *h){
56 MpegEncContext * const s = &h->s;
57 const int mb_xy= h->mb_xy;
58 const int mb_type= s->current_picture.mb_type[mb_xy];
63 memset(refs, -1, sizeof(refs));
65 if(IS_16X16(mb_type)){
66 get_lowest_part_y(h, refs, 0, 16, 0,
67 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
68 }else if(IS_16X8(mb_type)){
69 get_lowest_part_y(h, refs, 0, 8, 0,
70 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
71 get_lowest_part_y(h, refs, 8, 8, 8,
72 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
73 }else if(IS_8X16(mb_type)){
74 get_lowest_part_y(h, refs, 0, 16, 0,
75 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
76 get_lowest_part_y(h, refs, 4, 16, 0,
77 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
81 assert(IS_8X8(mb_type));
84 const int sub_mb_type= h->sub_mb_type[i];
86 int y_offset= (i&2)<<2;
88 if(IS_SUB_8X8(sub_mb_type)){
89 get_lowest_part_y(h, refs, n , 8, y_offset,
90 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
91 }else if(IS_SUB_8X4(sub_mb_type)){
92 get_lowest_part_y(h, refs, n , 4, y_offset,
93 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
94 get_lowest_part_y(h, refs, n+2, 4, y_offset+4,
95 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
96 }else if(IS_SUB_4X8(sub_mb_type)){
97 get_lowest_part_y(h, refs, n , 8, y_offset,
98 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
99 get_lowest_part_y(h, refs, n+1, 8, y_offset,
100 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
103 assert(IS_SUB_4X4(sub_mb_type));
105 int sub_y_offset= y_offset + 2*(j&2);
106 get_lowest_part_y(h, refs, n+j, 4, sub_y_offset,
107 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
113 for(list=h->list_count-1; list>=0; list--){
114 for(ref=0; ref<48 && nrefs[list]; ref++){
115 int row = refs[list][ref];
117 Picture *ref_pic = &h->ref_list[list][ref];
118 int ref_field = ref_pic->reference - 1;
119 int ref_field_picture = ref_pic->field_picture;
120 int pic_height = 16*s->mb_height >> ref_field_picture;
125 if(!FIELD_PICTURE && ref_field_picture){ // frame referencing two fields
126 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) - !(row&1), pic_height-1), 1);
127 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) , pic_height-1), 0);
128 }else if(FIELD_PICTURE && !ref_field_picture){ // field referencing one field of a frame
129 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row*2 + ref_field , pic_height-1), 0);
130 }else if(FIELD_PICTURE){
131 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), ref_field);
133 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), 0);
140 #define FUNC(a) a ## _8
141 #define PIXEL_SHIFT 0
142 #include "h264_hl_motion.h"
146 #define FUNC(a) a ## _16
147 #define PIXEL_SHIFT 1
148 #include "h264_hl_motion.h"
150 void ff_hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
151 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
152 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
153 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
155 hl_motion_16(h, dest_y, dest_cb, dest_cr,
156 qpix_put, chroma_put,
157 qpix_avg, chroma_avg,
158 weight_op, weight_avg);
160 hl_motion_8(h, dest_y, dest_cb, dest_cr,
161 qpix_put, chroma_put,
162 qpix_avg, chroma_avg,
163 weight_op, weight_avg);