From 053074276bdc0f75635d7b2ba6e0fe3b921c8ee3 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 15 Feb 2010 23:04:07 +0000 Subject: [PATCH] Drop compute_mb_neighbors() and move fill_decode_neighbors() up to take its role. Should be faster as this is a strict code removial. Originally committed as revision 21843 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/h264_cabac.c | 29 +---------------------------- 1 file changed, 1 insertion(+), 28 deletions(-) diff --git a/libavcodec/h264_cabac.c b/libavcodec/h264_cabac.c index 92dcf4d5f..615a3798c 100644 --- a/libavcodec/h264_cabac.c +++ b/libavcodec/h264_cabac.c @@ -1182,32 +1182,6 @@ static void decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int #endif } -static inline void compute_mb_neighbors(H264Context *h) -{ - MpegEncContext * const s = &h->s; - const int mb_xy = h->mb_xy; - h->top_mb_xy = mb_xy - s->mb_stride; - h->left_mb_xy[0] = mb_xy - 1; - if(FRAME_MBAFF){ - const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride; - const int top_pair_xy = pair_xy - s->mb_stride; - const int top_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]); - const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]); - const int curr_mb_field_flag = MB_FIELD; - const int bottom = (s->mb_y & 1); - - if (curr_mb_field_flag && (bottom || top_mb_field_flag)){ - h->top_mb_xy -= s->mb_stride; - } - if (!left_mb_field_flag == curr_mb_field_flag) { - h->left_mb_xy[0] = pair_xy - 1; - } - } else if (FIELD_PICTURE) { - h->top_mb_xy -= s->mb_stride; - } - return; -} - /** * decodes a macroblock * @returns 0 if OK, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed @@ -1257,7 +1231,7 @@ int ff_h264_decode_mb_cabac(H264Context *h) { h->prev_mb_skipped = 0; - compute_mb_neighbors(h); + fill_decode_neighbors(h, -(MB_FIELD)); if( h->slice_type_nos == FF_B_TYPE ) { const int mba_xy = h->left_mb_xy[0]; @@ -1365,7 +1339,6 @@ decode_intra_mb: h->ref_count[1] <<= 1; } - fill_decode_neighbors(h, mb_type); fill_decode_caches(h, mb_type); if( IS_INTRA( mb_type ) ) { -- 2.11.0