diff options
Diffstat (limited to 'libavcodec/h264_hl_motion.c')
| -rw-r--r-- | libavcodec/h264_hl_motion.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/libavcodec/h264_hl_motion.c b/libavcodec/h264_hl_motion.c new file mode 100644 index 0000000000..654b8b8444 --- /dev/null +++ b/libavcodec/h264_hl_motion.c @@ -0,0 +1,164 @@ + +#include "h264.h" +#include "thread.h" + +static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n, int height, + int y_offset, int list){ + int raw_my= h->mv_cache[list][ scan8[n] ][1]; + int filter_height= (raw_my&3) ? 2 : 0; + int full_my= (raw_my>>2) + y_offset; + int top = full_my - filter_height, bottom = full_my + height + filter_height; + + return FFMAX(abs(top), bottom); +} + +static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, int height, + int y_offset, int list0, int list1, int *nrefs){ + MpegEncContext * const s = &h->s; + int my; + + y_offset += 16*(s->mb_y >> MB_FIELD); + + if(list0){ + int ref_n = h->ref_cache[0][ scan8[n] ]; + Picture *ref= &h->ref_list[0][ref_n]; + + // Error resilience puts the current picture in the ref list. + // Don't try to wait on these as it will cause a deadlock. + // Fields can wait on each other, though. + if(ref->thread_opaque != s->current_picture.thread_opaque || + (ref->reference&3) != s->picture_structure) { + my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0); + if (refs[0][ref_n] < 0) nrefs[0] += 1; + refs[0][ref_n] = FFMAX(refs[0][ref_n], my); + } + } + + if(list1){ + int ref_n = h->ref_cache[1][ scan8[n] ]; + Picture *ref= &h->ref_list[1][ref_n]; + + if(ref->thread_opaque != s->current_picture.thread_opaque || + (ref->reference&3) != s->picture_structure) { + my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1); + if (refs[1][ref_n] < 0) nrefs[1] += 1; + refs[1][ref_n] = FFMAX(refs[1][ref_n], my); + } + } +} + +/** + * Wait until all reference frames are available for MC operations. + * + * @param h the H264 context + */ +static void await_references(H264Context *h){ + MpegEncContext * const s = &h->s; + const int mb_xy= h->mb_xy; + const int mb_type= s->current_picture.mb_type[mb_xy]; + int refs[2][48]; + int nrefs[2] = {0}; + int ref, list; + + memset(refs, -1, sizeof(refs)); + + if(IS_16X16(mb_type)){ + get_lowest_part_y(h, refs, 0, 16, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + }else if(IS_16X8(mb_type)){ + get_lowest_part_y(h, refs, 0, 8, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, 8, 8, 8, + IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs); + }else if(IS_8X16(mb_type)){ + get_lowest_part_y(h, refs, 0, 16, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, 4, 16, 0, + IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs); + }else{ + int i; + + assert(IS_8X8(mb_type)); + + for(i=0; i<4; i++){ + const int sub_mb_type= h->sub_mb_type[i]; + const int n= 4*i; + int y_offset= (i&2)<<2; + + if(IS_SUB_8X8(sub_mb_type)){ + get_lowest_part_y(h, refs, n , 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + }else if(IS_SUB_8X4(sub_mb_type)){ + get_lowest_part_y(h, refs, n , 4, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, n+2, 4, y_offset+4, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + }else if(IS_SUB_4X8(sub_mb_type)){ + get_lowest_part_y(h, refs, n , 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, n+1, 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + }else{ + int j; + assert(IS_SUB_4X4(sub_mb_type)); + for(j=0; j<4; j++){ + int sub_y_offset= y_offset + 2*(j&2); + get_lowest_part_y(h, refs, n+j, 4, sub_y_offset, + IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs); + } + } + } + } + + for(list=h->list_count-1; list>=0; list--){ + for(ref=0; ref<48 && nrefs[list]; ref++){ + int row = refs[list][ref]; + if(row >= 0){ + Picture *ref_pic = &h->ref_list[list][ref]; + int ref_field = ref_pic->reference - 1; + int ref_field_picture = ref_pic->field_picture; + int pic_height = 16*s->mb_height >> ref_field_picture; + + row <<= MB_MBAFF; + nrefs[list]--; + + if(!FIELD_PICTURE && ref_field_picture){ // frame referencing two fields + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) - !(row&1), pic_height-1), 1); + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) , pic_height-1), 0); + }else if(FIELD_PICTURE && !ref_field_picture){ // field referencing one field of a frame + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row*2 + ref_field , pic_height-1), 0); + }else if(FIELD_PICTURE){ + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), ref_field); + }else{ + ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), 0); + } + } + } + } +} + +#define FUNC(a) a ## _8 +#define PIXEL_SHIFT 0 +#include "h264_hl_motion.h" + +#undef PIXEL_SHIFT +#undef FUNC +#define FUNC(a) a ## _16 +#define PIXEL_SHIFT 1 +#include "h264_hl_motion.h" + +void ff_hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, + qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put), + qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg), + h264_weight_func *weight_op, h264_biweight_func *weight_avg){ + if(h->pixel_shift){ + hl_motion_16(h, dest_y, dest_cb, dest_cr, + qpix_put, chroma_put, + qpix_avg, chroma_avg, + weight_op, weight_avg); + }else + hl_motion_8(h, dest_y, dest_cb, dest_cr, + qpix_put, chroma_put, + qpix_avg, chroma_avg, + weight_op, weight_avg); +} |