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Merge changes Iedb5b6a3,Iaea98508,I36580cea,Ia0574320

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* changes:
  vp9_decodeframe.h: remove unused prototype
  vp9_decodeframe: move public funcs to end of file
  vp9_decodeframe: reorder some functions
  vp9_decodeframe: hide vp9_dec_build_inter_predictors_sb
This commit is contained in:
James Zern 2015-06-12 22:12:29 +00:00 committed by Gerrit Code Review
commit e21c1eab9d
2 changed files with 378 additions and 381 deletions
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745
vp9/decoder/vp9_decodeframe.c
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@ -346,6 +346,357 @@ static void reconstruct_inter_block(int plane, int block,
*args->eobtotal += eob;
}
static void build_mc_border(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
int x, int y, int b_w, int b_h, int w, int h) {
// Get a pointer to the start of the real data for this row.
const uint8_t *ref_row = src - x - y * src_stride;
if (y >= h)
ref_row += (h - 1) * src_stride;
else if (y > 0)
ref_row += y * src_stride;
do {
int right = 0, copy;
int left = x < 0 ? -x : 0;
if (left > b_w)
left = b_w;
if (x + b_w > w)
right = x + b_w - w;
if (right > b_w)
right = b_w;
copy = b_w - left - right;
if (left)
memset(dst, ref_row[0], left);
if (copy)
memcpy(dst + left, ref_row + x + left, copy);
if (right)
memset(dst + left + copy, ref_row[w - 1], right);
dst += dst_stride;
++y;
if (y > 0 && y < h)
ref_row += src_stride;
} while (--b_h);
}
#if CONFIG_VP9_HIGHBITDEPTH
static void high_build_mc_border(const uint8_t *src8, int src_stride,
uint16_t *dst, int dst_stride,
int x, int y, int b_w, int b_h,
int w, int h) {
// Get a pointer to the start of the real data for this row.
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
const uint16_t *ref_row = src - x - y * src_stride;
if (y >= h)
ref_row += (h - 1) * src_stride;
else if (y > 0)
ref_row += y * src_stride;
do {
int right = 0, copy;
int left = x < 0 ? -x : 0;
if (left > b_w)
left = b_w;
if (x + b_w > w)
right = x + b_w - w;
if (right > b_w)
right = b_w;
copy = b_w - left - right;
if (left)
vpx_memset16(dst, ref_row[0], left);
if (copy)
memcpy(dst + left, ref_row + x + left, copy * sizeof(uint16_t));
if (right)
vpx_memset16(dst + left + copy, ref_row[w - 1], right);
dst += dst_stride;
++y;
if (y > 0 && y < h)
ref_row += src_stride;
} while (--b_h);
}
#endif // CONFIG_VP9_HIGHBITDEPTH
#if CONFIG_VP9_HIGHBITDEPTH
static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride,
int x0, int y0, int b_w, int b_h,
int frame_width, int frame_height,
int border_offset,
uint8_t *const dst, int dst_buf_stride,
int subpel_x, int subpel_y,
const InterpKernel *kernel,
const struct scale_factors *sf,
MACROBLOCKD *xd,
int w, int h, int ref, int xs, int ys) {
DECLARE_ALIGNED(16, uint16_t, mc_buf_high[80 * 2 * 80 * 2]);
const uint8_t *buf_ptr;
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
high_build_mc_border(buf_ptr1, pre_buf_stride, mc_buf_high, b_w,
x0, y0, b_w, b_h, frame_width, frame_height);
buf_ptr = CONVERT_TO_BYTEPTR(mc_buf_high) + border_offset;
} else {
build_mc_border(buf_ptr1, pre_buf_stride, (uint8_t *)mc_buf_high, b_w,
x0, y0, b_w, b_h, frame_width, frame_height);
buf_ptr = ((uint8_t *)mc_buf_high) + border_offset;
}
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
high_inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd);
} else {
inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
}
}
#else
static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride,
int x0, int y0, int b_w, int b_h,
int frame_width, int frame_height,
int border_offset,
uint8_t *const dst, int dst_buf_stride,
int subpel_x, int subpel_y,
const InterpKernel *kernel,
const struct scale_factors *sf,
int w, int h, int ref, int xs, int ys) {
DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]);
const uint8_t *buf_ptr;
build_mc_border(buf_ptr1, pre_buf_stride, mc_buf, b_w,
x0, y0, b_w, b_h, frame_width, frame_height);
buf_ptr = mc_buf + border_offset;
inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
}
#endif // CONFIG_VP9_HIGHBITDEPTH
static void dec_build_inter_predictors(VP9Decoder *const pbi, MACROBLOCKD *xd,
int plane, int bw, int bh, int x,
int y, int w, int h, int mi_x, int mi_y,
const InterpKernel *kernel,
const struct scale_factors *sf,
struct buf_2d *pre_buf,
struct buf_2d *dst_buf, const MV* mv,
RefCntBuffer *ref_frame_buf,
int is_scaled, int ref) {
struct macroblockd_plane *const pd = &xd->plane[plane];
uint8_t *const dst = dst_buf->buf + dst_buf->stride * y + x;
MV32 scaled_mv;
int xs, ys, x0, y0, x0_16, y0_16, frame_width, frame_height,
buf_stride, subpel_x, subpel_y;
uint8_t *ref_frame, *buf_ptr;
// Get reference frame pointer, width and height.
if (plane == 0) {
frame_width = ref_frame_buf->buf.y_crop_width;
frame_height = ref_frame_buf->buf.y_crop_height;
ref_frame = ref_frame_buf->buf.y_buffer;
} else {
frame_width = ref_frame_buf->buf.uv_crop_width;
frame_height = ref_frame_buf->buf.uv_crop_height;
ref_frame = plane == 1 ? ref_frame_buf->buf.u_buffer
: ref_frame_buf->buf.v_buffer;
}
if (is_scaled) {
const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, mv, bw, bh,
pd->subsampling_x,
pd->subsampling_y);
// Co-ordinate of containing block to pixel precision.
int x_start = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x));
int y_start = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y));
// Co-ordinate of the block to 1/16th pixel precision.
x0_16 = (x_start + x) << SUBPEL_BITS;
y0_16 = (y_start + y) << SUBPEL_BITS;
// Co-ordinate of current block in reference frame
// to 1/16th pixel precision.
x0_16 = sf->scale_value_x(x0_16, sf);
y0_16 = sf->scale_value_y(y0_16, sf);
// Map the top left corner of the block into the reference frame.
x0 = sf->scale_value_x(x_start + x, sf);
y0 = sf->scale_value_y(y_start + y, sf);
// Scale the MV and incorporate the sub-pixel offset of the block
// in the reference frame.
scaled_mv = vp9_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf);
xs = sf->x_step_q4;
ys = sf->y_step_q4;
} else {
// Co-ordinate of containing block to pixel precision.
x0 = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)) + x;
y0 = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)) + y;
// Co-ordinate of the block to 1/16th pixel precision.
x0_16 = x0 << SUBPEL_BITS;
y0_16 = y0 << SUBPEL_BITS;
scaled_mv.row = mv->row * (1 << (1 - pd->subsampling_y));
scaled_mv.col = mv->col * (1 << (1 - pd->subsampling_x));
xs = ys = 16;
}
subpel_x = scaled_mv.col & SUBPEL_MASK;
subpel_y = scaled_mv.row & SUBPEL_MASK;
// Calculate the top left corner of the best matching block in the
// reference frame.
x0 += scaled_mv.col >> SUBPEL_BITS;
y0 += scaled_mv.row >> SUBPEL_BITS;
x0_16 += scaled_mv.col;
y0_16 += scaled_mv.row;
// Get reference block pointer.
buf_ptr = ref_frame + y0 * pre_buf->stride + x0;
buf_stride = pre_buf->stride;
// Do border extension if there is motion or the
// width/height is not a multiple of 8 pixels.
if (is_scaled || scaled_mv.col || scaled_mv.row ||
(frame_width & 0x7) || (frame_height & 0x7)) {
int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS;
// Get reference block bottom right horizontal coordinate.
int x1 = (x0_16 + (w - 1) * xs) >> SUBPEL_BITS;
int x_pad = 0, y_pad = 0;
if (subpel_x || (sf->x_step_q4 != SUBPEL_SHIFTS)) {
x0 -= VP9_INTERP_EXTEND - 1;
x1 += VP9_INTERP_EXTEND;
x_pad = 1;
}
if (subpel_y || (sf->y_step_q4 != SUBPEL_SHIFTS)) {
y0 -= VP9_INTERP_EXTEND - 1;
y1 += VP9_INTERP_EXTEND;
y_pad = 1;
}
// Wait until reference block is ready. Pad 7 more pixels as last 7
// pixels of each superblock row can be changed by next superblock row.
if (pbi->frame_parallel_decode)
vp9_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf,
MAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1));
// Skip border extension if block is inside the frame.
if (x0 < 0 || x0 > frame_width - 1 || x1 < 0 || x1 > frame_width - 1 ||
y0 < 0 || y0 > frame_height - 1 || y1 < 0 || y1 > frame_height - 1) {
// Extend the border.
const uint8_t *const buf_ptr1 = ref_frame + y0 * buf_stride + x0;
const int b_w = x1 - x0 + 1;
const int b_h = y1 - y0 + 1;
const int border_offset = y_pad * 3 * b_w + x_pad * 3;
extend_and_predict(buf_ptr1, buf_stride, x0, y0, b_w, b_h,
frame_width, frame_height, border_offset,
dst, dst_buf->stride,
subpel_x, subpel_y,
kernel, sf,
#if CONFIG_VP9_HIGHBITDEPTH
xd,
#endif
w, h, ref, xs, ys);
return;
}
} else {
// Wait until reference block is ready. Pad 7 more pixels as last 7
// pixels of each superblock row can be changed by next superblock row.
if (pbi->frame_parallel_decode) {
const int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS;
vp9_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf,
MAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1));
}
}
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
high_inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd);
} else {
inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
}
#else
inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
#endif // CONFIG_VP9_HIGHBITDEPTH
}
static void dec_build_inter_predictors_sb(VP9Decoder *const pbi,
MACROBLOCKD *xd,
int mi_row, int mi_col,
BLOCK_SIZE bsize) {
int plane;
const int mi_x = mi_col * MI_SIZE;
const int mi_y = mi_row * MI_SIZE;
const MODE_INFO *mi = xd->mi[0];
const InterpKernel *kernel = vp9_get_interp_kernel(mi->mbmi.interp_filter);
const BLOCK_SIZE sb_type = mi->mbmi.sb_type;
const int is_compound = has_second_ref(&mi->mbmi);
for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize,
&xd->plane[plane]);
struct macroblockd_plane *const pd = &xd->plane[plane];
struct buf_2d *const dst_buf = &pd->dst;
const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
const int bw = 4 * num_4x4_w;
const int bh = 4 * num_4x4_h;
int ref;
for (ref = 0; ref < 1 + is_compound; ++ref) {
const struct scale_factors *const sf = &xd->block_refs[ref]->sf;
struct buf_2d *const pre_buf = &pd->pre[ref];
const int idx = xd->block_refs[ref]->idx;
BufferPool *const pool = pbi->common.buffer_pool;
RefCntBuffer *const ref_frame_buf = &pool->frame_bufs[idx];
const int is_scaled = vp9_is_scaled(sf);
if (sb_type < BLOCK_8X8) {
int i = 0, x, y;
assert(bsize == BLOCK_8X8);
for (y = 0; y < num_4x4_h; ++y) {
for (x = 0; x < num_4x4_w; ++x) {
const MV mv = average_split_mvs(pd, mi, ref, i++);
dec_build_inter_predictors(pbi, xd, plane, bw, bh,
4 * x, 4 * y, 4, 4, mi_x, mi_y, kernel,
sf, pre_buf, dst_buf, &mv,
ref_frame_buf, is_scaled, ref);
}
}
} else {
const MV mv = mi->mbmi.mv[ref].as_mv;
dec_build_inter_predictors(pbi, xd, plane, bw, bh,
0, 0, bw, bh, mi_x, mi_y, kernel,
sf, pre_buf, dst_buf, &mv, ref_frame_buf,
is_scaled, ref);
}
}
}
}
static MB_MODE_INFO *set_offsets(VP9_COMMON *const cm, MACROBLOCKD *const xd,
const TileInfo *const tile,
BLOCK_SIZE bsize, int mi_row, int mi_col) {
@ -405,7 +756,7 @@ static void decode_block(VP9Decoder *const pbi, MACROBLOCKD *const xd,
predict_and_reconstruct_intra_block, &arg);
} else {
// Prediction
vp9_dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col, bsize);
dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col, bsize);
// Reconstruction
if (!mbmi->skip) {
@ -669,12 +1020,6 @@ static INTERP_FILTER read_interp_filter(struct vp9_read_bit_buffer *rb) {
: literal_to_filter[vp9_rb_read_literal(rb, 2)];
}
void vp9_read_frame_size(struct vp9_read_bit_buffer *rb,
int *width, int *height) {
*width = vp9_rb_read_literal(rb, 16) + 1;
*height = vp9_rb_read_literal(rb, 16) + 1;
}
static void setup_display_size(VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) {
cm->display_width = cm->width;
cm->display_height = cm->height;
@ -1253,20 +1598,6 @@ static void error_handler(void *data) {
vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME, "Truncated packet");
}
int vp9_read_sync_code(struct vp9_read_bit_buffer *const rb) {
return vp9_rb_read_literal(rb, 8) == VP9_SYNC_CODE_0 &&
vp9_rb_read_literal(rb, 8) == VP9_SYNC_CODE_1 &&
vp9_rb_read_literal(rb, 8) == VP9_SYNC_CODE_2;
}
BITSTREAM_PROFILE vp9_read_profile(struct vp9_read_bit_buffer *rb) {
int profile = vp9_rb_read_bit(rb);
profile |= vp9_rb_read_bit(rb) << 1;
if (profile > 2)
profile += vp9_rb_read_bit(rb);
return (BITSTREAM_PROFILE) profile;
}
static void read_bitdepth_colorspace_sampling(
VP9_COMMON *cm, struct vp9_read_bit_buffer *rb) {
if (cm->profile >= PROFILE_2) {
@ -1616,6 +1947,28 @@ static struct vp9_read_bit_buffer* init_read_bit_buffer(
return rb;
}
//------------------------------------------------------------------------------
int vp9_read_sync_code(struct vp9_read_bit_buffer *const rb) {
return vp9_rb_read_literal(rb, 8) == VP9_SYNC_CODE_0 &&
vp9_rb_read_literal(rb, 8) == VP9_SYNC_CODE_1 &&
vp9_rb_read_literal(rb, 8) == VP9_SYNC_CODE_2;
}
void vp9_read_frame_size(struct vp9_read_bit_buffer *rb,
int *width, int *height) {
*width = vp9_rb_read_literal(rb, 16) + 1;
*height = vp9_rb_read_literal(rb, 16) + 1;
}
BITSTREAM_PROFILE vp9_read_profile(struct vp9_read_bit_buffer *rb) {
int profile = vp9_rb_read_bit(rb);
profile |= vp9_rb_read_bit(rb) << 1;
if (profile > 2)
profile += vp9_rb_read_bit(rb);
return (BITSTREAM_PROFILE) profile;
}
void vp9_decode_frame(VP9Decoder *pbi,
const uint8_t *data, const uint8_t *data_end,
const uint8_t **p_data_end) {
@ -1725,353 +2078,3 @@ void vp9_decode_frame(VP9Decoder *pbi,
if (cm->refresh_frame_context && !context_updated)
cm->frame_contexts[cm->frame_context_idx] = *cm->fc;
}
static void build_mc_border(const uint8_t *src, int src_stride,
uint8_t *dst, int dst_stride,
int x, int y, int b_w, int b_h, int w, int h) {
// Get a pointer to the start of the real data for this row.
const uint8_t *ref_row = src - x - y * src_stride;
if (y >= h)
ref_row += (h - 1) * src_stride;
else if (y > 0)
ref_row += y * src_stride;
do {
int right = 0, copy;
int left = x < 0 ? -x : 0;
if (left > b_w)
left = b_w;
if (x + b_w > w)
right = x + b_w - w;
if (right > b_w)
right = b_w;
copy = b_w - left - right;
if (left)
memset(dst, ref_row[0], left);
if (copy)
memcpy(dst + left, ref_row + x + left, copy);
if (right)
memset(dst + left + copy, ref_row[w - 1], right);
dst += dst_stride;
++y;
if (y > 0 && y < h)
ref_row += src_stride;
} while (--b_h);
}
#if CONFIG_VP9_HIGHBITDEPTH
static void high_build_mc_border(const uint8_t *src8, int src_stride,
uint16_t *dst, int dst_stride,
int x, int y, int b_w, int b_h,
int w, int h) {
// Get a pointer to the start of the real data for this row.
const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
const uint16_t *ref_row = src - x - y * src_stride;
if (y >= h)
ref_row += (h - 1) * src_stride;
else if (y > 0)
ref_row += y * src_stride;
do {
int right = 0, copy;
int left = x < 0 ? -x : 0;
if (left > b_w)
left = b_w;
if (x + b_w > w)
right = x + b_w - w;
if (right > b_w)
right = b_w;
copy = b_w - left - right;
if (left)
vpx_memset16(dst, ref_row[0], left);
if (copy)
memcpy(dst + left, ref_row + x + left, copy * sizeof(uint16_t));
if (right)
vpx_memset16(dst + left + copy, ref_row[w - 1], right);
dst += dst_stride;
++y;
if (y > 0 && y < h)
ref_row += src_stride;
} while (--b_h);
}
#endif // CONFIG_VP9_HIGHBITDEPTH
#if CONFIG_VP9_HIGHBITDEPTH
static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride,
int x0, int y0, int b_w, int b_h,
int frame_width, int frame_height,
int border_offset,
uint8_t *const dst, int dst_buf_stride,
int subpel_x, int subpel_y,
const InterpKernel *kernel,
const struct scale_factors *sf,
MACROBLOCKD *xd,
int w, int h, int ref, int xs, int ys) {
DECLARE_ALIGNED(16, uint16_t, mc_buf_high[80 * 2 * 80 * 2]);
const uint8_t *buf_ptr;
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
high_build_mc_border(buf_ptr1, pre_buf_stride, mc_buf_high, b_w,
x0, y0, b_w, b_h, frame_width, frame_height);
buf_ptr = CONVERT_TO_BYTEPTR(mc_buf_high) + border_offset;
} else {
build_mc_border(buf_ptr1, pre_buf_stride, (uint8_t *)mc_buf_high, b_w,
x0, y0, b_w, b_h, frame_width, frame_height);
buf_ptr = ((uint8_t *)mc_buf_high) + border_offset;
}
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
high_inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd);
} else {
inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
}
}
#else
static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride,
int x0, int y0, int b_w, int b_h,
int frame_width, int frame_height,
int border_offset,
uint8_t *const dst, int dst_buf_stride,
int subpel_x, int subpel_y,
const InterpKernel *kernel,
const struct scale_factors *sf,
int w, int h, int ref, int xs, int ys) {
DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]);
const uint8_t *buf_ptr;
build_mc_border(buf_ptr1, pre_buf_stride, mc_buf, b_w,
x0, y0, b_w, b_h, frame_width, frame_height);
buf_ptr = mc_buf + border_offset;
inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
}
#endif // CONFIG_VP9_HIGHBITDEPTH
static void dec_build_inter_predictors(VP9Decoder *const pbi, MACROBLOCKD *xd,
int plane, int bw, int bh, int x,
int y, int w, int h, int mi_x, int mi_y,
const InterpKernel *kernel,
const struct scale_factors *sf,
struct buf_2d *pre_buf,
struct buf_2d *dst_buf, const MV* mv,
RefCntBuffer *ref_frame_buf,
int is_scaled, int ref) {
struct macroblockd_plane *const pd = &xd->plane[plane];
uint8_t *const dst = dst_buf->buf + dst_buf->stride * y + x;
MV32 scaled_mv;
int xs, ys, x0, y0, x0_16, y0_16, frame_width, frame_height,
buf_stride, subpel_x, subpel_y;
uint8_t *ref_frame, *buf_ptr;
// Get reference frame pointer, width and height.
if (plane == 0) {
frame_width = ref_frame_buf->buf.y_crop_width;
frame_height = ref_frame_buf->buf.y_crop_height;
ref_frame = ref_frame_buf->buf.y_buffer;
} else {
frame_width = ref_frame_buf->buf.uv_crop_width;
frame_height = ref_frame_buf->buf.uv_crop_height;
ref_frame = plane == 1 ? ref_frame_buf->buf.u_buffer
: ref_frame_buf->buf.v_buffer;
}
if (is_scaled) {
const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, mv, bw, bh,
pd->subsampling_x,
pd->subsampling_y);
// Co-ordinate of containing block to pixel precision.
int x_start = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x));
int y_start = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y));
// Co-ordinate of the block to 1/16th pixel precision.
x0_16 = (x_start + x) << SUBPEL_BITS;
y0_16 = (y_start + y) << SUBPEL_BITS;
// Co-ordinate of current block in reference frame
// to 1/16th pixel precision.
x0_16 = sf->scale_value_x(x0_16, sf);
y0_16 = sf->scale_value_y(y0_16, sf);
// Map the top left corner of the block into the reference frame.
x0 = sf->scale_value_x(x_start + x, sf);
y0 = sf->scale_value_y(y_start + y, sf);
// Scale the MV and incorporate the sub-pixel offset of the block
// in the reference frame.
scaled_mv = vp9_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf);
xs = sf->x_step_q4;
ys = sf->y_step_q4;
} else {
// Co-ordinate of containing block to pixel precision.
x0 = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)) + x;
y0 = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)) + y;
// Co-ordinate of the block to 1/16th pixel precision.
x0_16 = x0 << SUBPEL_BITS;
y0_16 = y0 << SUBPEL_BITS;
scaled_mv.row = mv->row * (1 << (1 - pd->subsampling_y));
scaled_mv.col = mv->col * (1 << (1 - pd->subsampling_x));
xs = ys = 16;
}
subpel_x = scaled_mv.col & SUBPEL_MASK;
subpel_y = scaled_mv.row & SUBPEL_MASK;
// Calculate the top left corner of the best matching block in the
// reference frame.
x0 += scaled_mv.col >> SUBPEL_BITS;
y0 += scaled_mv.row >> SUBPEL_BITS;
x0_16 += scaled_mv.col;
y0_16 += scaled_mv.row;
// Get reference block pointer.
buf_ptr = ref_frame + y0 * pre_buf->stride + x0;
buf_stride = pre_buf->stride;
// Do border extension if there is motion or the
// width/height is not a multiple of 8 pixels.
if (is_scaled || scaled_mv.col || scaled_mv.row ||
(frame_width & 0x7) || (frame_height & 0x7)) {
int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS;
// Get reference block bottom right horizontal coordinate.
int x1 = (x0_16 + (w - 1) * xs) >> SUBPEL_BITS;
int x_pad = 0, y_pad = 0;
if (subpel_x || (sf->x_step_q4 != SUBPEL_SHIFTS)) {
x0 -= VP9_INTERP_EXTEND - 1;
x1 += VP9_INTERP_EXTEND;
x_pad = 1;
}
if (subpel_y || (sf->y_step_q4 != SUBPEL_SHIFTS)) {
y0 -= VP9_INTERP_EXTEND - 1;
y1 += VP9_INTERP_EXTEND;
y_pad = 1;
}
// Wait until reference block is ready. Pad 7 more pixels as last 7
// pixels of each superblock row can be changed by next superblock row.
if (pbi->frame_parallel_decode)
vp9_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf,
MAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1));
// Skip border extension if block is inside the frame.
if (x0 < 0 || x0 > frame_width - 1 || x1 < 0 || x1 > frame_width - 1 ||
y0 < 0 || y0 > frame_height - 1 || y1 < 0 || y1 > frame_height - 1) {
// Extend the border.
const uint8_t *const buf_ptr1 = ref_frame + y0 * buf_stride + x0;
const int b_w = x1 - x0 + 1;
const int b_h = y1 - y0 + 1;
const int border_offset = y_pad * 3 * b_w + x_pad * 3;
extend_and_predict(buf_ptr1, buf_stride, x0, y0, b_w, b_h,
frame_width, frame_height, border_offset,
dst, dst_buf->stride,
subpel_x, subpel_y,
kernel, sf,
#if CONFIG_VP9_HIGHBITDEPTH
xd,
#endif
w, h, ref, xs, ys);
return;
}
} else {
// Wait until reference block is ready. Pad 7 more pixels as last 7
// pixels of each superblock row can be changed by next superblock row.
if (pbi->frame_parallel_decode) {
const int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS;
vp9_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf,
MAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1));
}
}
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
high_inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd);
} else {
inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
}
#else
inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
subpel_y, sf, w, h, ref, kernel, xs, ys);
#endif // CONFIG_VP9_HIGHBITDEPTH
}
void vp9_dec_build_inter_predictors_sb(VP9Decoder *const pbi, MACROBLOCKD *xd,
int mi_row, int mi_col,
BLOCK_SIZE bsize) {
int plane;
const int mi_x = mi_col * MI_SIZE;
const int mi_y = mi_row * MI_SIZE;
const MODE_INFO *mi = xd->mi[0];
const InterpKernel *kernel = vp9_get_interp_kernel(mi->mbmi.interp_filter);
const BLOCK_SIZE sb_type = mi->mbmi.sb_type;
const int is_compound = has_second_ref(&mi->mbmi);
for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize,
&xd->plane[plane]);
struct macroblockd_plane *const pd = &xd->plane[plane];
struct buf_2d *const dst_buf = &pd->dst;
const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
const int bw = 4 * num_4x4_w;
const int bh = 4 * num_4x4_h;
int ref;
for (ref = 0; ref < 1 + is_compound; ++ref) {
const struct scale_factors *const sf = &xd->block_refs[ref]->sf;
struct buf_2d *const pre_buf = &pd->pre[ref];
const int idx = xd->block_refs[ref]->idx;
BufferPool *const pool = pbi->common.buffer_pool;
RefCntBuffer *const ref_frame_buf = &pool->frame_bufs[idx];
const int is_scaled = vp9_is_scaled(sf);
if (sb_type < BLOCK_8X8) {
int i = 0, x, y;
assert(bsize == BLOCK_8X8);
for (y = 0; y < num_4x4_h; ++y) {
for (x = 0; x < num_4x4_w; ++x) {
const MV mv = average_split_mvs(pd, mi, ref, i++);
dec_build_inter_predictors(pbi, xd, plane, bw, bh,
4 * x, 4 * y, 4, 4, mi_x, mi_y, kernel,
sf, pre_buf, dst_buf, &mv,
ref_frame_buf, is_scaled, ref);
}
}
} else {
const MV mv = mi->mbmi.mv[ref].as_mv;
dec_build_inter_predictors(pbi, xd, plane, bw, bh,
0, 0, bw, bh, mi_x, mi_y, kernel,
sf, pre_buf, dst_buf, &mv, ref_frame_buf,
is_scaled, ref);
}
}
}
}

14
vp9/decoder/vp9_decodeframe.h
View File

@ -16,24 +16,18 @@
extern "C" {
#endif
struct VP9Common;
struct VP9Decoder;
struct vp9_read_bit_buffer;
void vp9_init_dequantizer(struct VP9Common *cm);
void vp9_decode_frame(struct VP9Decoder *pbi,
const uint8_t *data, const uint8_t *data_end,
const uint8_t **p_data_end);
int vp9_read_sync_code(struct vp9_read_bit_buffer *const rb);
void vp9_read_frame_size(struct vp9_read_bit_buffer *rb,
int *width, int *height);
BITSTREAM_PROFILE vp9_read_profile(struct vp9_read_bit_buffer *rb);
void vp9_dec_build_inter_predictors_sb(struct VP9Decoder *const pbi,
MACROBLOCKD *xd, int mi_row, int mi_col,
BLOCK_SIZE bsize);
void vp9_decode_frame(struct VP9Decoder *pbi,
const uint8_t *data, const uint8_t *data_end,
const uint8_t **p_data_end);
#ifdef __cplusplus
} // extern "C"
#endif