static void setup_token_decoder(VP8D_COMP *pbi,
const unsigned char* token_part_sizes)
{
vp8_reader *bool_decoder = &pbi->mbc[0];
unsigned int partition_idx;
unsigned int fragment_idx;
unsigned int num_token_partitions;
const unsigned char *first_fragment_end = pbi->fragments.ptrs[0] +
pbi->fragments.sizes[0];
TOKEN_PARTITION multi_token_partition =
(TOKEN_PARTITION)vp8_read_literal(&pbi->mbc[8], 2);
if (!vp8dx_bool_error(&pbi->mbc[8]))
pbi->common.multi_token_partition = multi_token_partition;
num_token_partitions = 1 << pbi->common.multi_token_partition;
/* Check for partitions within the fragments and unpack the fragments
* so that each fragment pointer points to its corresponding partition. */
for (fragment_idx = 0; fragment_idx < pbi->fragments.count; ++fragment_idx)
{
unsigned int fragment_size = pbi->fragments.sizes[fragment_idx];
const unsigned char *fragment_end = pbi->fragments.ptrs[fragment_idx] +
fragment_size;
/* Special case for handling the first partition since we have already
* read its size. */
if (fragment_idx == 0)
{
/* Size of first partition + token partition sizes element */
ptrdiff_t ext_first_part_size = token_part_sizes -
pbi->fragments.ptrs[0] + 3 * (num_token_partitions - 1);
fragment_size -= (unsigned int)ext_first_part_size;
if (fragment_size > 0)
{
pbi->fragments.sizes[0] = (unsigned int)ext_first_part_size;
/* The fragment contains an additional partition. Move to
* next. */
fragment_idx++;
pbi->fragments.ptrs[fragment_idx] = pbi->fragments.ptrs[0] +
pbi->fragments.sizes[0];
}
}
/* Split the chunk into partitions read from the bitstream */
while (fragment_size > 0)
{
ptrdiff_t partition_size = read_available_partition_size(
pbi,
token_part_sizes,
pbi->fragments.ptrs[fragment_idx],
first_fragment_end,
fragment_end,
fragment_idx - 1,
num_token_partitions);
pbi->fragments.sizes[fragment_idx] = (unsigned int)partition_size;
fragment_size -= (unsigned int)partition_size;
assert(fragment_idx <= num_token_partitions);
if (fragment_size > 0)
{
/* The fragment contains an additional partition.
* Move to next. */
fragment_idx++;
pbi->fragments.ptrs[fragment_idx] =
pbi->fragments.ptrs[fragment_idx - 1] + partition_size;
}
}
}
pbi->fragments.count = num_token_partitions + 1;
for (partition_idx = 1; partition_idx < pbi->fragments.count; ++partition_idx)
{
if (vp8dx_start_decode(bool_decoder,
pbi->fragments.ptrs[partition_idx],
pbi->fragments.sizes[partition_idx],
pbi->decrypt_cb, pbi->decrypt_state))
vpx_internal_error(&pbi->common.error, VPX_CODEC_MEM_ERROR,
"Failed to allocate bool decoder %d",
partition_idx);
bool_decoder++;
}
#if CONFIG_MULTITHREAD
/* Clamp number of decoder threads */
if (pbi->decoding_thread_count > num_token_partitions - 1)
pbi->decoding_thread_count = num_token_partitions - 1;
#endif
}
static void decode_macroblock(VP8D_COMP *pbi, MACROBLOCKD *xd,
unsigned int mb_idx)
{
MB_PREDICTION_MODE mode;
int i;
#if CONFIG_ERROR_CONCEALMENT
int corruption_detected = 0;
#endif
if (xd->mode_info_context->mbmi.mb_skip_coeff)
{
vp8_reset_mb_tokens_context(xd);
}
else if (!vp8dx_bool_error(xd->current_bc))
{
int eobtotal;
eobtotal = vp8_decode_mb_tokens(pbi, xd);
/* Special case: Force the loopfilter to skip when eobtotal is zero */
xd->mode_info_context->mbmi.mb_skip_coeff = (eobtotal==0);
}
mode = xd->mode_info_context->mbmi.mode;
if (xd->segmentation_enabled)
vp8_mb_init_dequantizer(pbi, xd);
#if CONFIG_ERROR_CONCEALMENT
if(pbi->ec_active)
{
int throw_residual;
/* When we have independent partitions we can apply residual even
* though other partitions within the frame are corrupt.
*/
throw_residual = (!pbi->independent_partitions &&
pbi->frame_corrupt_residual);
throw_residual = (throw_residual || vp8dx_bool_error(xd->current_bc));
if ((mb_idx >= pbi->mvs_corrupt_from_mb || throw_residual))
{
/* MB with corrupt residuals or corrupt mode/motion vectors.
* Better to use the predictor as reconstruction.
*/
pbi->frame_corrupt_residual = 1;
vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff));
vp8_conceal_corrupt_mb(xd);
corruption_detected = 1;
/* force idct to be skipped for B_PRED and use the
* prediction only for reconstruction
* */
vpx_memset(xd->eobs, 0, 25);
}
}
#endif
/* do prediction */
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
{
vp8_build_intra_predictors_mbuv_s(xd,
xd->recon_above[1],
xd->recon_above[2],
xd->recon_left[1],
xd->recon_left[2],
xd->recon_left_stride[1],
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.uv_stride);
if (mode != B_PRED)
{
vp8_build_intra_predictors_mby_s(xd,
xd->recon_above[0],
xd->recon_left[0],
xd->recon_left_stride[0],
xd->dst.y_buffer,
xd->dst.y_stride);
}
else
{
short *DQC = xd->dequant_y1;
int dst_stride = xd->dst.y_stride;
/* clear out residual eob info */
if(xd->mode_info_context->mbmi.mb_skip_coeff)
vpx_memset(xd->eobs, 0, 25);
intra_prediction_down_copy(xd, xd->recon_above[0] + 16);
for (i = 0; i < 16; i++)
{
BLOCKD *b = &xd->block[i];
unsigned char *dst = xd->dst.y_buffer + b->offset;
B_PREDICTION_MODE b_mode =
xd->mode_info_context->bmi[i].as_mode;
unsigned char *Above = dst - dst_stride;
unsigned char *yleft = dst - 1;
int left_stride = dst_stride;
unsigned char top_left = Above[-1];
vp8_intra4x4_predict(Above, yleft, left_stride, b_mode,
dst, dst_stride, top_left);
if (xd->eobs[i])
{
if (xd->eobs[i] > 1)
{
vp8_dequant_idct_add(b->qcoeff, DQC, dst, dst_stride);
}
else
{
vp8_dc_only_idct_add
(b->qcoeff[0] * DQC[0],
dst, dst_stride,
dst, dst_stride);
vpx_memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0]));
}
}
}
}
}
else
{
vp8_build_inter_predictors_mb(xd);
}
#if CONFIG_ERROR_CONCEALMENT
if (corruption_detected)
{
return;
}
#endif
if(!xd->mode_info_context->mbmi.mb_skip_coeff)
{
/* dequantization and idct */
if (mode != B_PRED)
{
short *DQC = xd->dequant_y1;
if (mode != SPLITMV)
{
BLOCKD *b = &xd->block[24];
/* do 2nd order transform on the dc block */
if (xd->eobs[24] > 1)
{
vp8_dequantize_b(b, xd->dequant_y2);
vp8_short_inv_walsh4x4(&b->dqcoeff[0],
xd->qcoeff);
vpx_memset(b->qcoeff, 0, 16 * sizeof(b->qcoeff[0]));
}
else
{
b->dqcoeff[0] = b->qcoeff[0] * xd->dequant_y2[0];
vp8_short_inv_walsh4x4_1(&b->dqcoeff[0],
xd->qcoeff);
vpx_memset(b->qcoeff, 0, 2 * sizeof(b->qcoeff[0]));
}
/* override the dc dequant constant in order to preserve the
* dc components
*/
DQC = xd->dequant_y1_dc;
}
vp8_dequant_idct_add_y_block
(xd->qcoeff, DQC,
xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs);
}
vp8_dequant_idct_add_uv_block
(xd->qcoeff+16*16, xd->dequant_uv,
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.uv_stride, xd->eobs+16);
}
}
static void decode_mb_rows(VP8D_COMP *pbi)
{
VP8_COMMON *const pc = & pbi->common;
MACROBLOCKD *const xd = & pbi->mb;
MODE_INFO *lf_mic = xd->mode_info_context;
int ibc = 0;
int num_part = 1 << pc->multi_token_partition;
int recon_yoffset, recon_uvoffset;
int mb_row, mb_col;
int mb_idx = 0;
YV12_BUFFER_CONFIG *yv12_fb_new = pbi->dec_fb_ref[INTRA_FRAME];
int recon_y_stride = yv12_fb_new->y_stride;
int recon_uv_stride = yv12_fb_new->uv_stride;
unsigned char *ref_buffer[MAX_REF_FRAMES][3];
unsigned char *dst_buffer[3];
unsigned char *lf_dst[3];
unsigned char *eb_dst[3];
int i;
int ref_fb_corrupted[MAX_REF_FRAMES];
ref_fb_corrupted[INTRA_FRAME] = 0;
for(i = 1; i < MAX_REF_FRAMES; i++)
{
YV12_BUFFER_CONFIG *this_fb = pbi->dec_fb_ref[i];
ref_buffer[i][0] = this_fb->y_buffer;
ref_buffer[i][1] = this_fb->u_buffer;
ref_buffer[i][2] = this_fb->v_buffer;
ref_fb_corrupted[i] = this_fb->corrupted;
}
/* Set up the buffer pointers */
eb_dst[0] = lf_dst[0] = dst_buffer[0] = yv12_fb_new->y_buffer;
eb_dst[1] = lf_dst[1] = dst_buffer[1] = yv12_fb_new->u_buffer;
eb_dst[2] = lf_dst[2] = dst_buffer[2] = yv12_fb_new->v_buffer;
xd->up_available = 0;
/* Initialize the loop filter for this frame. */
if(pc->filter_level)
vp8_loop_filter_frame_init(pc, xd, pc->filter_level);
vp8_setup_intra_recon_top_line(yv12_fb_new);
/* Decode the individual macro block */
for (mb_row = 0; mb_row < pc->mb_rows; mb_row++)
{
if (num_part > 1)
{
xd->current_bc = & pbi->mbc[ibc];
ibc++;
if (ibc == num_part)
ibc = 0;
}
recon_yoffset = mb_row * recon_y_stride * 16;
recon_uvoffset = mb_row * recon_uv_stride * 8;
/* reset contexts */
xd->above_context = pc->above_context;
vpx_memset(xd->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
xd->left_available = 0;
xd->mb_to_top_edge = -((mb_row * 16) << 3);
xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3;
xd->recon_above[0] = dst_buffer[0] + recon_yoffset;
xd->recon_above[1] = dst_buffer[1] + recon_uvoffset;
xd->recon_above[2] = dst_buffer[2] + recon_uvoffset;
xd->recon_left[0] = xd->recon_above[0] - 1;
xd->recon_left[1] = xd->recon_above[1] - 1;
xd->recon_left[2] = xd->recon_above[2] - 1;
xd->recon_above[0] -= xd->dst.y_stride;
xd->recon_above[1] -= xd->dst.uv_stride;
xd->recon_above[2] -= xd->dst.uv_stride;
/* TODO: move to outside row loop */
xd->recon_left_stride[0] = xd->dst.y_stride;
xd->recon_left_stride[1] = xd->dst.uv_stride;
setup_intra_recon_left(xd->recon_left[0], xd->recon_left[1],
xd->recon_left[2], xd->dst.y_stride,
xd->dst.uv_stride);
for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)
{
/* Distance of Mb to the various image edges.
* These are specified to 8th pel as they are always compared to values
* that are in 1/8th pel units
*/
xd->mb_to_left_edge = -((mb_col * 16) << 3);
xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3;
#if CONFIG_ERROR_CONCEALMENT
{
int corrupt_residual = (!pbi->independent_partitions &&
pbi->frame_corrupt_residual) ||
vp8dx_bool_error(xd->current_bc);
if (pbi->ec_active &&
xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME &&
corrupt_residual)
{
/* We have an intra block with corrupt coefficients, better to
* conceal with an inter block. Interpolate MVs from neighboring
* MBs.
*
* Note that for the first mb with corrupt residual in a frame,
* we might not discover that before decoding the residual. That
* happens after this check, and therefore no inter concealment
* will be done.
*/
vp8_interpolate_motion(xd,
mb_row, mb_col,
pc->mb_rows, pc->mb_cols,
pc->mode_info_stride);
}
}
#endif
xd->dst.y_buffer = dst_buffer[0] + recon_yoffset;
xd->dst.u_buffer = dst_buffer[1] + recon_uvoffset;
xd->dst.v_buffer = dst_buffer[2] + recon_uvoffset;
if (xd->mode_info_context->mbmi.ref_frame >= LAST_FRAME) {
MV_REFERENCE_FRAME ref = xd->mode_info_context->mbmi.ref_frame;
xd->pre.y_buffer = ref_buffer[ref][0] + recon_yoffset;
xd->pre.u_buffer = ref_buffer[ref][1] + recon_uvoffset;
xd->pre.v_buffer = ref_buffer[ref][2] + recon_uvoffset;
} else {
// ref_frame is INTRA_FRAME, pre buffer should not be used.
xd->pre.y_buffer = 0;
xd->pre.u_buffer = 0;
xd->pre.v_buffer = 0;
}
/* propagate errors from reference frames */
xd->corrupted |= ref_fb_corrupted[xd->mode_info_context->mbmi.ref_frame];
decode_macroblock(pbi, xd, mb_idx);
mb_idx++;
xd->left_available = 1;
/* check if the boolean decoder has suffered an error */
xd->corrupted |= vp8dx_bool_error(xd->current_bc);
xd->recon_above[0] += 16;
xd->recon_above[1] += 8;
xd->recon_above[2] += 8;
xd->recon_left[0] += 16;
xd->recon_left[1] += 8;
xd->recon_left[2] += 8;
recon_yoffset += 16;
recon_uvoffset += 8;
++xd->mode_info_context; /* next mb */
xd->above_context++;
}
/* adjust to the next row of mbs */
vp8_extend_mb_row(yv12_fb_new, xd->dst.y_buffer + 16,
xd->dst.u_buffer + 8, xd->dst.v_buffer + 8);
++xd->mode_info_context; /* skip prediction column */
xd->up_available = 1;
if(pc->filter_level)
{
if(mb_row > 0)
{
if (pc->filter_type == NORMAL_LOOPFILTER)
vp8_loop_filter_row_normal(pc, lf_mic, mb_row-1,
recon_y_stride, recon_uv_stride,
lf_dst[0], lf_dst[1], lf_dst[2]);
else
vp8_loop_filter_row_simple(pc, lf_mic, mb_row-1,
recon_y_stride, recon_uv_stride,
lf_dst[0], lf_dst[1], lf_dst[2]);
if(mb_row > 1)
{
yv12_extend_frame_left_right_c(yv12_fb_new,
eb_dst[0],
eb_dst[1],
eb_dst[2]);
eb_dst[0] += recon_y_stride * 16;
eb_dst[1] += recon_uv_stride * 8;
eb_dst[2] += recon_uv_stride * 8;
}
lf_dst[0] += recon_y_stride * 16;
lf_dst[1] += recon_uv_stride * 8;
lf_dst[2] += recon_uv_stride * 8;
lf_mic += pc->mb_cols;
lf_mic++; /* Skip border mb */
}
}
else
{
if(mb_row > 0)
{
/**/
yv12_extend_frame_left_right_c(yv12_fb_new,
eb_dst[0],
eb_dst[1],
eb_dst[2]);
eb_dst[0] += recon_y_stride * 16;
eb_dst[1] += recon_uv_stride * 8;
eb_dst[2] += recon_uv_stride * 8;
}
}
}
if(pc->filter_level)
{
if (pc->filter_type == NORMAL_LOOPFILTER)
vp8_loop_filter_row_normal(pc, lf_mic, mb_row-1, recon_y_stride,
recon_uv_stride, lf_dst[0], lf_dst[1],
lf_dst[2]);
else
vp8_loop_filter_row_simple(pc, lf_mic, mb_row-1, recon_y_stride,
recon_uv_stride, lf_dst[0], lf_dst[1],
lf_dst[2]);
yv12_extend_frame_left_right_c(yv12_fb_new,
eb_dst[0],
eb_dst[1],
eb_dst[2]);
eb_dst[0] += recon_y_stride * 16;
eb_dst[1] += recon_uv_stride * 8;
eb_dst[2] += recon_uv_stride * 8;
}
yv12_extend_frame_left_right_c(yv12_fb_new,
eb_dst[0],
eb_dst[1],
eb_dst[2]);
yv12_extend_frame_top_c(yv12_fb_new);
yv12_extend_frame_bottom_c(yv12_fb_new);
}
static void
decode_mb_row(VP8D_COMP *pbi, VP8_COMMON *pc, int mb_row, MACROBLOCKD *xd)
{
int recon_yoffset, recon_uvoffset;
int mb_col;
int ref_fb_idx = pc->lst_fb_idx;
int dst_fb_idx = pc->new_fb_idx;
int recon_y_stride = pc->yv12_fb[ref_fb_idx].y_stride;
int recon_uv_stride = pc->yv12_fb[ref_fb_idx].uv_stride;
vpx_memset(&pc->left_context, 0, sizeof(pc->left_context));
recon_yoffset = mb_row * recon_y_stride * 16;
recon_uvoffset = mb_row * recon_uv_stride * 8;
/* reset above block coeffs */
xd->above_context = pc->above_context;
xd->up_available = (mb_row != 0);
xd->mb_to_top_edge = -((mb_row * 16)) << 3;
xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3;
for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)
{
/* Distance of Mb to the various image edges.
* These are specified to 8th pel as they are always compared to values
* that are in 1/8th pel units
*/
xd->mb_to_left_edge = -((mb_col * 16) << 3);
xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3;
#if CONFIG_ERROR_CONCEALMENT
{
int corrupt_residual = (!pbi->independent_partitions &&
pbi->frame_corrupt_residual) ||
vp8dx_bool_error(xd->current_bc);
if (pbi->ec_active &&
xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME &&
corrupt_residual)
{
/* We have an intra block with corrupt coefficients, better to
* conceal with an inter block. Interpolate MVs from neighboring
* MBs.
*
* Note that for the first mb with corrupt residual in a frame,
* we might not discover that before decoding the residual. That
* happens after this check, and therefore no inter concealment
* will be done.
*/
vp8_interpolate_motion(xd,
mb_row, mb_col,
pc->mb_rows, pc->mb_cols,
pc->mode_info_stride);
}
}
#endif
xd->dst.y_buffer = pc->yv12_fb[dst_fb_idx].y_buffer + recon_yoffset;
xd->dst.u_buffer = pc->yv12_fb[dst_fb_idx].u_buffer + recon_uvoffset;
xd->dst.v_buffer = pc->yv12_fb[dst_fb_idx].v_buffer + recon_uvoffset;
xd->left_available = (mb_col != 0);
/* Select the appropriate reference frame for this MB */
if (xd->mode_info_context->mbmi.ref_frame == LAST_FRAME)
ref_fb_idx = pc->lst_fb_idx;
else if (xd->mode_info_context->mbmi.ref_frame == GOLDEN_FRAME)
ref_fb_idx = pc->gld_fb_idx;
else
ref_fb_idx = pc->alt_fb_idx;
xd->pre.y_buffer = pc->yv12_fb[ref_fb_idx].y_buffer + recon_yoffset;
xd->pre.u_buffer = pc->yv12_fb[ref_fb_idx].u_buffer + recon_uvoffset;
xd->pre.v_buffer = pc->yv12_fb[ref_fb_idx].v_buffer + recon_uvoffset;
if (xd->mode_info_context->mbmi.ref_frame != INTRA_FRAME)
{
/* propagate errors from reference frames */
xd->corrupted |= pc->yv12_fb[ref_fb_idx].corrupted;
}
decode_macroblock(pbi, xd, mb_row * pc->mb_cols + mb_col);
/* check if the boolean decoder has suffered an error */
xd->corrupted |= vp8dx_bool_error(xd->current_bc);
recon_yoffset += 16;
recon_uvoffset += 8;
++xd->mode_info_context; /* next mb */
xd->above_context++;
}
/* adjust to the next row of mbs */
vp8_extend_mb_row(
&pc->yv12_fb[dst_fb_idx],
xd->dst.y_buffer + 16, xd->dst.u_buffer + 8, xd->dst.v_buffer + 8
);
++xd->mode_info_context; /* skip prediction column */
}
static void decode_macroblock(VP8D_COMP *pbi, MACROBLOCKD *xd,
unsigned int mb_idx)
{
MB_PREDICTION_MODE mode;
int i;
int corruption_detected = 0;
int eobtotal;
if (xd->mode_info_context->mbmi.mb_skip_coeff)
{
vp8_reset_mb_tokens_context(xd);
}
else if (!vp8dx_bool_error(xd->current_bc))
{
eobtotal = vp8_decode_mb_tokens(pbi, xd);
/* Special case: Force the loopfilter to skip when eobtotal is zero */
xd->mode_info_context->mbmi.mb_skip_coeff = (eobtotal==0);
}
mode = xd->mode_info_context->mbmi.mode;
if (xd->segmentation_enabled)
mb_init_dequantizer(pbi, xd);
#if PROFILE_OUTPUT
if (xd->frame_type == KEY_FRAME)
printf("Intra-Coded MB\n");
else{
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME){
printf("Intra-Coded Inter-Frame MB\n");
} else {
printf("Inter-Coded MB\n");
}
}
#endif
#if CONFIG_OPENCL && (ENABLE_CL_IDCT_DEQUANT || ENABLE_CL_SUBPIXEL)
//If OpenCL is enabled and initialized, use CL-specific decoder for remains
//of MB decoding.
if (cl_initialized == CL_SUCCESS){
vp8_decode_macroblock_cl(pbi, xd, eobtotal);
return;
}
#endif
#if CONFIG_ERROR_CONCEALMENT
if(pbi->ec_active)
{
int throw_residual;
/* When we have independent partitions we can apply residual even
* though other partitions within the frame are corrupt.
*/
throw_residual = (!pbi->independent_partitions &&
pbi->frame_corrupt_residual);
throw_residual = (throw_residual || vp8dx_bool_error(xd->current_bc));
if ((mb_idx >= pbi->mvs_corrupt_from_mb || throw_residual))
{
/* MB with corrupt residuals or corrupt mode/motion vectors.
* Better to use the predictor as reconstruction.
*/
pbi->frame_corrupt_residual = 1;
vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff));
vp8_conceal_corrupt_mb(xd);
corruption_detected = 1;
/* force idct to be skipped for B_PRED and use the
* prediction only for reconstruction
* */
vpx_memset(xd->eobs, 0, 25);
}
}
#endif
/* do prediction */
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
{
vp8_build_intra_predictors_mbuv_s(xd);
if (mode != B_PRED)
{
vp8_build_intra_predictors_mby_s(xd);
}
else
{
short *DQC = xd->dequant_y1;
/* clear out residual eob info */
if(xd->mode_info_context->mbmi.mb_skip_coeff)
vpx_memset(xd->eobs, 0, 25);
vp8_intra_prediction_down_copy(xd);
for (i = 0; i < 16; i++)
{
BLOCKD *b = &xd->block[i];
int b_mode = xd->mode_info_context->bmi[i].as_mode;
vp8_intra4x4_predict
( *(b->base_dst) + b->dst, b->dst_stride, b_mode,
*(b->base_dst) + b->dst, b->dst_stride );
if (xd->eobs[i])
{
if (xd->eobs[i] > 1)
{
vp8_dequant_idct_add
(&b->qcoeff_base[b->qcoeff_offset], DQC,
*(b->base_dst) + b->dst, b->dst_stride);
}
else
{
vp8_dc_only_idct_add
(b->qcoeff_base[b->qcoeff_offset] * DQC[0],
*(b->base_dst) + b->dst, b->dst_stride,
*(b->base_dst) + b->dst, b->dst_stride);
((int *)&b->qcoeff_base[b->qcoeff_offset])[0] = 0;
}
}
}
}
}
else
{
vp8_build_inter_predictors_mb(xd);
}
#if CONFIG_ERROR_CONCEALMENT
if (corruption_detected)
{
return;
}
#endif
if(!xd->mode_info_context->mbmi.mb_skip_coeff)
{
/* dequantization and idct */
if (mode != B_PRED)
{
short *DQC = xd->dequant_y1;
if (mode != SPLITMV)
{
BLOCKD *b = &xd->block[24];
short *qcoeff = &b->qcoeff_base[b->qcoeff_offset];
/* do 2nd order transform on the dc block */
if (xd->eobs[24] > 1)
{
vp8_dequantize_b(b, xd->dequant_y2);
vp8_short_inv_walsh4x4(&b->dqcoeff_base[b->dqcoeff_offset],
xd->qcoeff);
((int *)qcoeff)[0] = 0;
((int *)qcoeff)[1] = 0;
((int *)qcoeff)[2] = 0;
((int *)qcoeff)[3] = 0;
((int *)qcoeff)[4] = 0;
((int *)qcoeff)[5] = 0;
((int *)qcoeff)[6] = 0;
((int *)qcoeff)[7] = 0;
}
else
{
b->dqcoeff_base[b->dqcoeff_offset] = qcoeff[0] * xd->dequant_y2[0];
vp8_short_inv_walsh4x4_1(&b->dqcoeff_base[b->dqcoeff_offset],
xd->qcoeff);
((int *)qcoeff)[0] = 0;
}
/* override the dc dequant constant in order to preserve the
* dc components
*/
DQC = xd->dequant_y1_dc;
}
vp8_dequant_idct_add_y_block
(xd->qcoeff, DQC,
xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs);
}
vp8_dequant_idct_add_uv_block
(xd->qcoeff+16*16, xd->dequant_uv,
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.uv_stride, xd->eobs+16);
}
}
static void decode_mb_rows(VP8D_COMP *pbi)
{
VP8_COMMON *const pc = & pbi->common;
MACROBLOCKD *const xd = & pbi->mb;
int ibc = 0;
int num_part = 1 << pc->multi_token_partition;
int recon_yoffset, recon_uvoffset;
int mb_row, mb_col;
int mb_idx = 0;
int dst_fb_idx = pc->new_fb_idx;
int recon_y_stride = pc->yv12_fb[dst_fb_idx].y_stride;
int recon_uv_stride = pc->yv12_fb[dst_fb_idx].uv_stride;
unsigned char *ref_buffer[MAX_REF_FRAMES][3];
unsigned char *dst_buffer[3];
int i;
int ref_fb_index[MAX_REF_FRAMES];
int ref_fb_corrupted[MAX_REF_FRAMES];
ref_fb_corrupted[INTRA_FRAME] = 0;
ref_fb_index[LAST_FRAME] = pc->lst_fb_idx;
ref_fb_index[GOLDEN_FRAME] = pc->gld_fb_idx;
ref_fb_index[ALTREF_FRAME] = pc->alt_fb_idx;
for(i = 1; i < MAX_REF_FRAMES; i++)
{
ref_buffer[i][0] = pc->yv12_fb[ref_fb_index[i]].y_buffer;
ref_buffer[i][1] = pc->yv12_fb[ref_fb_index[i]].u_buffer;
ref_buffer[i][2] = pc->yv12_fb[ref_fb_index[i]].v_buffer;
ref_fb_corrupted[i] = pc->yv12_fb[ref_fb_index[i]].corrupted;
}
dst_buffer[0] = pc->yv12_fb[dst_fb_idx].y_buffer;
dst_buffer[1] = pc->yv12_fb[dst_fb_idx].u_buffer;
dst_buffer[2] = pc->yv12_fb[dst_fb_idx].v_buffer;
xd->up_available = 0;
/* Decode the individual macro block */
for (mb_row = 0; mb_row < pc->mb_rows; mb_row++)
{
if (num_part > 1)
{
xd->current_bc = & pbi->mbc[ibc];
ibc++;
if (ibc == num_part)
ibc = 0;
}
recon_yoffset = mb_row * recon_y_stride * 16;
recon_uvoffset = mb_row * recon_uv_stride * 8;
/* reset contexts */
xd->above_context = pc->above_context;
vpx_memset(xd->left_context, 0, sizeof(ENTROPY_CONTEXT_PLANES));
xd->left_available = 0;
xd->mb_to_top_edge = -((mb_row * 16)) << 3;
xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3;
xd->recon_above[0] = dst_buffer[0] + recon_yoffset;
xd->recon_above[1] = dst_buffer[1] + recon_uvoffset;
xd->recon_above[2] = dst_buffer[2] + recon_uvoffset;
xd->recon_left[0] = xd->recon_above[0] - 1;
xd->recon_left[1] = xd->recon_above[1] - 1;
xd->recon_left[2] = xd->recon_above[2] - 1;
xd->recon_above[0] -= xd->dst.y_stride;
xd->recon_above[1] -= xd->dst.uv_stride;
xd->recon_above[2] -= xd->dst.uv_stride;
//TODO: move to outside row loop
xd->recon_left_stride[0] = xd->dst.y_stride;
xd->recon_left_stride[1] = xd->dst.uv_stride;
for (mb_col = 0; mb_col < pc->mb_cols; mb_col++)
{
/* Distance of Mb to the various image edges.
* These are specified to 8th pel as they are always compared to values
* that are in 1/8th pel units
*/
xd->mb_to_left_edge = -((mb_col * 16) << 3);
xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3;
#if CONFIG_ERROR_CONCEALMENT
{
int corrupt_residual = (!pbi->independent_partitions &&
pbi->frame_corrupt_residual) ||
vp8dx_bool_error(xd->current_bc);
if (pbi->ec_active &&
xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME &&
corrupt_residual)
{
/* We have an intra block with corrupt coefficients, better to
* conceal with an inter block. Interpolate MVs from neighboring
* MBs.
*
* Note that for the first mb with corrupt residual in a frame,
* we might not discover that before decoding the residual. That
* happens after this check, and therefore no inter concealment
* will be done.
*/
vp8_interpolate_motion(xd,
mb_row, mb_col,
pc->mb_rows, pc->mb_cols,
pc->mode_info_stride);
}
}
#endif
xd->dst.y_buffer = dst_buffer[0] + recon_yoffset;
xd->dst.u_buffer = dst_buffer[1] + recon_uvoffset;
xd->dst.v_buffer = dst_buffer[2] + recon_uvoffset;
xd->pre.y_buffer = ref_buffer[xd->mode_info_context->mbmi.ref_frame][0] + recon_yoffset;
xd->pre.u_buffer = ref_buffer[xd->mode_info_context->mbmi.ref_frame][1] + recon_uvoffset;
xd->pre.v_buffer = ref_buffer[xd->mode_info_context->mbmi.ref_frame][2] + recon_uvoffset;
/* propagate errors from reference frames */
xd->corrupted |= ref_fb_corrupted[xd->mode_info_context->mbmi.ref_frame];
decode_macroblock(pbi, xd, mb_idx);
mb_idx++;
xd->left_available = 1;
/* check if the boolean decoder has suffered an error */
xd->corrupted |= vp8dx_bool_error(xd->current_bc);
xd->recon_above[0] += 16;
xd->recon_above[1] += 8;
xd->recon_above[2] += 8;
xd->recon_left[0] += 16;
xd->recon_left[1] += 8;
xd->recon_left[2] += 8;
recon_yoffset += 16;
recon_uvoffset += 8;
++xd->mode_info_context; /* next mb */
xd->above_context++;
}
/* adjust to the next row of mbs */
vp8_extend_mb_row(
&pc->yv12_fb[dst_fb_idx],
xd->dst.y_buffer + 16, xd->dst.u_buffer + 8, xd->dst.v_buffer + 8
);
++xd->mode_info_context; /* skip prediction column */
xd->up_available = 1;
}
}
static void decode_macroblock(VP8D_COMP *pbi, MACROBLOCKD *xd,
unsigned int mb_idx)
{
int eobtotal = 0;
int throw_residual = 0;
MB_PREDICTION_MODE mode;
int i;
if (xd->mode_info_context->mbmi.mb_skip_coeff)
{
vp8_reset_mb_tokens_context(xd);
}
else if (!vp8dx_bool_error(xd->current_bc))
{
eobtotal = vp8_decode_mb_tokens(pbi, xd);
}
mode = xd->mode_info_context->mbmi.mode;
if (eobtotal == 0 && mode != B_PRED && mode != SPLITMV &&
!vp8dx_bool_error(xd->current_bc))
{
/* Special case: Force the loopfilter to skip when eobtotal and
* mb_skip_coeff are zero.
* */
xd->mode_info_context->mbmi.mb_skip_coeff = 1;
skip_recon_mb(pbi, xd);
return;
}
if (xd->segmentation_enabled)
mb_init_dequantizer(pbi, xd);
/* do prediction */
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
{
RECON_INVOKE(&pbi->common.rtcd.recon, build_intra_predictors_mbuv_s)(xd);
if (mode != B_PRED)
{
RECON_INVOKE(&pbi->common.rtcd.recon,
build_intra_predictors_mby_s)(xd);
} else {
vp8_intra_prediction_down_copy(xd);
}
}
else
{
vp8_build_inter_predictors_mb(xd);
}
/* When we have independent partitions we can apply residual even
* though other partitions within the frame are corrupt.
*/
throw_residual = (!pbi->independent_partitions &&
pbi->frame_corrupt_residual);
throw_residual = (throw_residual || vp8dx_bool_error(xd->current_bc));
#if CONFIG_ERROR_CONCEALMENT
if (pbi->ec_active &&
(mb_idx >= pbi->mvs_corrupt_from_mb || throw_residual))
{
/* MB with corrupt residuals or corrupt mode/motion vectors.
* Better to use the predictor as reconstruction.
*/
pbi->frame_corrupt_residual = 1;
vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff));
vp8_conceal_corrupt_mb(xd);
return;
}
#endif
/* dequantization and idct */
if (mode == B_PRED)
{
for (i = 0; i < 16; i++)
{
BLOCKD *b = &xd->block[i];
int b_mode = xd->mode_info_context->bmi[i].as_mode;
RECON_INVOKE(RTCD_VTABLE(recon), intra4x4_predict)
( *(b->base_dst) + b->dst, b->dst_stride, b_mode,
*(b->base_dst) + b->dst, b->dst_stride );
if (xd->eobs[i] )
{
if (xd->eobs[i] > 1)
{
DEQUANT_INVOKE(&pbi->dequant, idct_add)
(b->qcoeff, b->dequant,
*(b->base_dst) + b->dst, b->dst_stride);
}
else
{
IDCT_INVOKE(RTCD_VTABLE(idct), idct1_scalar_add)
(b->qcoeff[0] * b->dequant[0],
*(b->base_dst) + b->dst, b->dst_stride,
*(b->base_dst) + b->dst, b->dst_stride);
((int *)b->qcoeff)[0] = 0;
}
}
}
}
else
{
short *DQC = xd->block[0].dequant;
/* save the dc dequant constant in case it is overridden */
short dc_dequant_temp = DQC[0];
if (mode != SPLITMV)
{
BLOCKD *b = &xd->block[24];
/* do 2nd order transform on the dc block */
if (xd->eobs[24] > 1)
{
DEQUANT_INVOKE(&pbi->dequant, block)(b);
IDCT_INVOKE(RTCD_VTABLE(idct), iwalsh16)(&b->dqcoeff[0],
xd->qcoeff);
((int *)b->qcoeff)[0] = 0;
((int *)b->qcoeff)[1] = 0;
((int *)b->qcoeff)[2] = 0;
((int *)b->qcoeff)[3] = 0;
((int *)b->qcoeff)[4] = 0;
((int *)b->qcoeff)[5] = 0;
((int *)b->qcoeff)[6] = 0;
((int *)b->qcoeff)[7] = 0;
}
else
{
b->dqcoeff[0] = b->qcoeff[0] * b->dequant[0];
IDCT_INVOKE(RTCD_VTABLE(idct), iwalsh1)(&b->dqcoeff[0],
xd->qcoeff);
((int *)b->qcoeff)[0] = 0;
}
/* override the dc dequant constant */
DQC[0] = 1;
}
DEQUANT_INVOKE (&pbi->dequant, idct_add_y_block)
(xd->qcoeff, xd->block[0].dequant,
xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs);
/* restore the dc dequant constant */
DQC[0] = dc_dequant_temp;
}
DEQUANT_INVOKE (&pbi->dequant, idct_add_uv_block)
(xd->qcoeff+16*16, xd->block[16].dequant,
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.uv_stride, xd->eobs+16);
}
