diff options
Diffstat (limited to 'vp8/common/extend.c')
| -rw-r--r-- | vp8/common/extend.c | 53 |
1 files changed, 34 insertions, 19 deletions
diff --git a/vp8/common/extend.c b/vp8/common/extend.c index f4dbce2cd..b52e9fe93 100644 --- a/vp8/common/extend.c +++ b/vp8/common/extend.c @@ -11,30 +11,40 @@ #include "extend.h" #include "vpx_mem/vpx_mem.h" -static void copy_and_extend_plane(unsigned char *s, /* source */ - int sp, /* source pitch */ - unsigned char *d, /* destination */ - int dp, /* destination pitch */ - int h, /* height */ - int w, /* width */ - int et, /* extend top border */ - int el, /* extend left border */ - int eb, /* extend bottom border */ - int er) { /* extend right border */ - int i; +static void copy_and_extend_plane( + unsigned char *s, /* source */ + int sp, /* source pitch */ + unsigned char *d, /* destination */ + int dp, /* destination pitch */ + int h, /* height */ + int w, /* width */ + int et, /* extend top border */ + int el, /* extend left border */ + int eb, /* extend bottom border */ + int er, /* extend right border */ + int interleave_step) { /* step between pixels of the current plane */ + int i, j; unsigned char *src_ptr1, *src_ptr2; unsigned char *dest_ptr1, *dest_ptr2; int linesize; + if (interleave_step < 1) interleave_step = 1; + /* copy the left and right most columns out */ src_ptr1 = s; - src_ptr2 = s + w - 1; + src_ptr2 = s + (w - 1) * interleave_step; dest_ptr1 = d - el; dest_ptr2 = d + w; for (i = 0; i < h; ++i) { memset(dest_ptr1, src_ptr1[0], el); - memcpy(dest_ptr1 + el, src_ptr1, w); + if (interleave_step == 1) { + memcpy(dest_ptr1 + el, src_ptr1, w); + } else { + for (j = 0; j < w; j++) { + dest_ptr1[el + j] = src_ptr1[interleave_step * j]; + } + } memset(dest_ptr2, src_ptr2[0], er); src_ptr1 += sp; src_ptr2 += sp; @@ -69,9 +79,12 @@ void vp8_copy_and_extend_frame(YV12_BUFFER_CONFIG *src, int eb = dst->border + dst->y_height - src->y_height; int er = dst->border + dst->y_width - src->y_width; + // detect nv12 colorspace + int chroma_step = src->v_buffer - src->u_buffer == 1 ? 2 : 1; + copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, src->y_height, src->y_width, et, el, eb, - er); + er, 1); et = dst->border >> 1; el = dst->border >> 1; @@ -80,11 +93,11 @@ void vp8_copy_and_extend_frame(YV12_BUFFER_CONFIG *src, copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride, src->uv_height, src->uv_width, et, el, - eb, er); + eb, er, chroma_step); copy_and_extend_plane(src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride, src->uv_height, src->uv_width, et, el, - eb, er); + eb, er, chroma_step); } void vp8_copy_and_extend_frame_with_rect(YV12_BUFFER_CONFIG *src, @@ -98,6 +111,8 @@ void vp8_copy_and_extend_frame_with_rect(YV12_BUFFER_CONFIG *src, int dst_y_offset = srcy * dst->y_stride + srcx; int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1); int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1); + // detect nv12 colorspace + int chroma_step = src->v_buffer - src->u_buffer == 1 ? 2 : 1; /* If the side is not touching the bounder then don't extend. */ if (srcy) et = 0; @@ -107,7 +122,7 @@ void vp8_copy_and_extend_frame_with_rect(YV12_BUFFER_CONFIG *src, copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride, dst->y_buffer + dst_y_offset, dst->y_stride, srch, srcw, - et, el, eb, er); + et, el, eb, er, 1); et = (et + 1) >> 1; el = (el + 1) >> 1; @@ -118,11 +133,11 @@ void vp8_copy_and_extend_frame_with_rect(YV12_BUFFER_CONFIG *src, copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride, dst->u_buffer + dst_uv_offset, dst->uv_stride, srch, - srcw, et, el, eb, er); + srcw, et, el, eb, er, chroma_step); copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride, dst->v_buffer + dst_uv_offset, dst->uv_stride, srch, - srcw, et, el, eb, er); + srcw, et, el, eb, er, chroma_step); } /* note the extension is only for the last row, for intra prediction purpose */ |