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af8f1928d1
vpx/vp8/decoder/decodframe.c
Jim Bankoski af8f1928d1 vp8 - config_featureupdates 
Added a bit to signify that the feature changed since
the last time we sent it, or not so that we don't need
to send all the databits for every feature change.

added config

Change-Id: I8d3064ce90d4500bf0d5c6b87c664e46138dfcac
2012-02-13 12:31:12 -08:00

1607 lines
53 KiB
C
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/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "onyxd_int.h"
#include "vp8/common/header.h"
#include "vp8/common/reconintra.h"
#include "vp8/common/reconintra4x4.h"
#include "vp8/common/recon.h"
#include "vp8/common/reconinter.h"
#include "dequantize.h"
#include "detokenize.h"
#include "vp8/common/invtrans.h"
#include "vp8/common/alloccommon.h"
#include "vp8/common/entropymode.h"
#include "vp8/common/quant_common.h"
#include "vpx_scale/vpxscale.h"
#include "vpx_scale/yv12extend.h"
#include "vp8/common/setupintrarecon.h"
#include "decodemv.h"
#include "vp8/common/extend.h"
#include "vp8/common/modecont.h"
#if CONFIG_ERROR_CONCEALMENT
#include "error_concealment.h"
#endif
#include "vpx_mem/vpx_mem.h"
#include "vp8/common/idct.h"
#include "dequantize.h"
#include "dboolhuff.h"
#include "vp8/common/seg_common.h"
#include <assert.h>
#include <stdio.h>
#ifdef DEC_DEBUG
int dec_debug = 0;
#endif
void vp8cx_init_de_quantizer(VP8D_COMP *pbi)
{
int i;
int Q;
VP8_COMMON *const pc = & pbi->common;
for (Q = 0; Q < QINDEX_RANGE; Q++)
{
pc->Y1dequant[Q][0] = (short)vp8_dc_quant(Q, pc->y1dc_delta_q);
pc->Y2dequant[Q][0] = (short)vp8_dc2quant(Q, pc->y2dc_delta_q);
pc->UVdequant[Q][0] = (short)vp8_dc_uv_quant(Q, pc->uvdc_delta_q);
/* all the ac values = ; */
for (i = 1; i < 16; i++)
{
int rc = vp8_default_zig_zag1d[i];
pc->Y1dequant[Q][rc] = (short)vp8_ac_yquant(Q);
pc->Y2dequant[Q][rc] = (short)vp8_ac2quant(Q, pc->y2ac_delta_q);
pc->UVdequant[Q][rc] = (short)vp8_ac_uv_quant(Q, pc->uvac_delta_q);
}
}
}
void mb_init_dequantizer(VP8D_COMP *pbi, MACROBLOCKD *xd)
{
int i;
int QIndex;
VP8_COMMON *const pc = & pbi->common;
int segment_id = xd->mode_info_context->mbmi.segment_id;
// Set the Q baseline allowing for any segment level adjustment
if ( segfeature_active( xd, segment_id, SEG_LVL_ALT_Q ) )
{
/* Abs Value */
if (xd->mb_segement_abs_delta == SEGMENT_ABSDATA)
QIndex = get_segdata( xd, segment_id, SEG_LVL_ALT_Q );
/* Delta Value */
else
{
QIndex = pc->base_qindex +
get_segdata( xd, segment_id, SEG_LVL_ALT_Q );
QIndex = (QIndex >= 0) ? ((QIndex <= MAXQ) ? QIndex : MAXQ) : 0; /* Clamp to valid range */
}
}
else
QIndex = pc->base_qindex;
/* Set up the block level dequant pointers */
for (i = 0; i < 16; i++)
{
xd->block[i].dequant = pc->Y1dequant[QIndex];
}
for (i = 16; i < 24; i++)
{
xd->block[i].dequant = pc->UVdequant[QIndex];
}
xd->block[24].dequant = pc->Y2dequant[QIndex];
}
#if CONFIG_RUNTIME_CPU_DETECT
#define RTCD_VTABLE(x) (&(pbi)->common.rtcd.x)
#else
#define RTCD_VTABLE(x) NULL
#endif
/* skip_recon_mb() is Modified: Instead of writing the result to predictor buffer and then copying it
* to dst buffer, we can write the result directly to dst buffer. This eliminates unnecessary copy.
*/
static void skip_recon_mb(VP8D_COMP *pbi, MACROBLOCKD *xd)
{
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
{
RECON_INVOKE(&pbi->common.rtcd.recon, build_intra_predictors_mbuv_s)(xd);
RECON_INVOKE(&pbi->common.rtcd.recon,
build_intra_predictors_mby_s)(xd);
}
else
{
vp8_build_inter16x16_predictors_mb(xd, xd->dst.y_buffer,
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.y_stride, xd->dst.uv_stride);
if (xd->mode_info_context->mbmi.second_ref_frame)
{
vp8_build_2nd_inter16x16_predictors_mb(xd, xd->dst.y_buffer,
xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.y_stride, xd->dst.uv_stride);
}
}
#ifdef DEC_DEBUG
if (dec_debug) {
int i, j;
printf("Generating predictors\n");
for (i=0;i<16;i++) {
for (j=0;j<16;j++) printf("%3d ", xd->dst.y_buffer[i*xd->dst.y_stride+j]);
printf("\n");
}
}
#endif
}
extern const int vp8_i8x8_block[4];
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 CONFIG_T8X8
int tx_type;
if( pbi->common.txfm_mode==ONLY_4X4 )
{
xd->mode_info_context->mbmi.txfm_size = TX_4X4;
}
else if( pbi->common.txfm_mode == ALLOW_8X8 )
{
if( xd->mode_info_context->mbmi.mode ==B_PRED
||xd->mode_info_context->mbmi.mode ==I8X8_PRED
||xd->mode_info_context->mbmi.mode ==SPLITMV)
xd->mode_info_context->mbmi.txfm_size = TX_4X4;
else
xd->mode_info_context->mbmi.txfm_size = TX_8X8;
}
tx_type = xd->mode_info_context->mbmi.txfm_size;
#endif
if (xd->mode_info_context->mbmi.mb_skip_coeff)
{
vp8_reset_mb_tokens_context(xd);
}
else if (!vp8dx_bool_error(xd->current_bc))
{
#if CONFIG_T8X8
for(i = 0; i < 25; i++)
{
xd->block[i].eob = 0;
xd->eobs[i] = 0;
}
if ( tx_type == TX_8X8 )
{
eobtotal = vp8_decode_mb_tokens_8x8(pbi, xd);
}
else
#endif
eobtotal = vp8_decode_mb_tokens(pbi, xd);
#ifdef DEC_DEBUG
if (dec_debug) {
printf("\nTokens (%d)\n", eobtotal);
for (i =0; i<400; i++) {
printf("%3d ", xd->qcoeff[i]);
if (i%16 == 15) printf("\n");
}
printf("\n");
}
#endif
}
mode = xd->mode_info_context->mbmi.mode;
if (eobtotal == 0 && mode != B_PRED && mode != SPLITMV
&& mode != I8X8_PRED
&&!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;
}
#ifdef DEC_DEBUG
if (dec_debug) {
int i, j;
printf("Generating predictors\n");
for (i=0;i<16;i++) {
for (j=0;j<16;j++) printf("%3d ", xd->dst.y_buffer[i*xd->dst.y_stride+j]);
printf("\n");
}
}
#endif
if (xd->segmentation_enabled)
mb_init_dequantizer(pbi, xd);
/* do prediction */
if (xd->mode_info_context->mbmi.ref_frame == INTRA_FRAME)
{
if(mode != I8X8_PRED)
{
RECON_INVOKE(&pbi->common.rtcd.recon, build_intra_predictors_mbuv)(xd);
if (mode != B_PRED)
{
RECON_INVOKE(&pbi->common.rtcd.recon,
build_intra_predictors_mby)(xd);
} else {
#if !CONFIG_SUPERBLOCKS
vp8_intra_prediction_down_copy(xd);
#endif
}
}
}
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 == I8X8_PRED)
{
for (i = 0; i < 4; i++)
{
int ib = vp8_i8x8_block[i];
const int iblock[4]={0,1,4,5};
int j;
int i8x8mode;
BLOCKD *b;
b = &xd->block[ib];
i8x8mode= b->bmi.as_mode;
RECON_INVOKE(RTCD_VTABLE(recon), intra8x8_predict)
(b, i8x8mode, b->predictor);
for(j = 0; j < 4; j++)
{
b = &xd->block[ib+iblock[j]];
if (xd->eobs[ib+iblock[j]] > 1)
{
DEQUANT_INVOKE(&pbi->dequant, idct_add)
(b->qcoeff, b->dequant, b->predictor,
*(b->base_dst) + b->dst, 16, b->dst_stride);
}
else
{
IDCT_INVOKE(RTCD_VTABLE(idct), idct1_scalar_add)
(b->qcoeff[0] * b->dequant[0], b->predictor,
*(b->base_dst) + b->dst, 16, b->dst_stride);
((int *)b->qcoeff)[0] = 0;
}
}
b = &xd->block[16+i];
RECON_INVOKE(RTCD_VTABLE(recon), intra_uv4x4_predict)
(b, i8x8mode, b->predictor);
DEQUANT_INVOKE(&pbi->dequant, idct_add)
(b->qcoeff, b->dequant, b->predictor,
*(b->base_dst) + b->dst, 8, b->dst_stride);
b = &xd->block[20+i];
RECON_INVOKE(RTCD_VTABLE(recon), intra_uv4x4_predict)
(b, i8x8mode, b->predictor);
DEQUANT_INVOKE(&pbi->dequant, idct_add)
(b->qcoeff, b->dequant, b->predictor,
*(b->base_dst) + b->dst, 8, b->dst_stride);
}
}
else 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, b_mode, b->predictor);
if (xd->eobs[i] > 1)
{
DEQUANT_INVOKE(&pbi->dequant, idct_add)
(b->qcoeff, b->dequant, b->predictor,
*(b->base_dst) + b->dst, 16, b->dst_stride);
}
else
{
IDCT_INVOKE(RTCD_VTABLE(idct), idct1_scalar_add)
(b->qcoeff[0] * b->dequant[0], b->predictor,
*(b->base_dst) + b->dst, 16, b->dst_stride);
((int *)b->qcoeff)[0] = 0;
}
}
}
else if (mode == SPLITMV)
{
DEQUANT_INVOKE (&pbi->dequant, idct_add_y_block)
(xd->qcoeff, xd->block[0].dequant,
xd->predictor, xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs);
}
else
{
BLOCKD *b = &xd->block[24];
#if CONFIG_T8X8
if( tx_type == TX_8X8 )
{
DEQUANT_INVOKE(&pbi->dequant, block_2x2)(b);
#ifdef DEC_DEBUG
if (dec_debug)
{
int j;
printf("DQcoeff Haar\n");
for (j=0;j<16;j++) {
printf("%d ", b->dqcoeff[j]);
}
printf("\n");
}
#endif
IDCT_INVOKE(RTCD_VTABLE(idct), ihaar2)(&b->dqcoeff[0], b->diff, 8);
((int *)b->qcoeff)[0] = 0;//2nd order block are set to 0 after inverse transform
((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;
DEQUANT_INVOKE (&pbi->dequant, dc_idct_add_y_block_8x8)
(xd->qcoeff, xd->block[0].dequant,
xd->predictor, xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs, xd->block[24].diff, xd);
}
else
#endif
{
DEQUANT_INVOKE(&pbi->dequant, block)(b);
if (xd->eobs[24] > 1)
{
IDCT_INVOKE(RTCD_VTABLE(idct), iwalsh16)(&b->dqcoeff[0], b->diff);
((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
{
IDCT_INVOKE(RTCD_VTABLE(idct), iwalsh1)(&b->dqcoeff[0], b->diff);
((int *)b->qcoeff)[0] = 0;
}
DEQUANT_INVOKE (&pbi->dequant, dc_idct_add_y_block)
(xd->qcoeff, xd->block[0].dequant,
xd->predictor, xd->dst.y_buffer,
xd->dst.y_stride, xd->eobs, xd->block[24].diff);
}
}
#if CONFIG_T8X8
if( tx_type == TX_8X8 )
{
DEQUANT_INVOKE (&pbi->dequant, idct_add_uv_block_8x8)//
(xd->qcoeff+16*16, xd->block[16].dequant,
xd->predictor+16*16, xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.uv_stride, xd->eobs+16, xd);//
}
else
#endif
if(xd->mode_info_context->mbmi.mode!=I8X8_PRED)
DEQUANT_INVOKE (&pbi->dequant, idct_add_uv_block)
(xd->qcoeff+16*16, xd->block[16].dequant,
xd->predictor+16*16, xd->dst.u_buffer, xd->dst.v_buffer,
xd->dst.uv_stride, xd->eobs+16);
}
static int get_delta_q(vp8_reader *bc, int prev, int *q_update)
{
int ret_val = 0;
if (vp8_read_bit(bc))
{
ret_val = vp8_read_literal(bc, 4);
if (vp8_read_bit(bc))
ret_val = -ret_val;
}
/* Trigger a quantizer update if the delta-q value has changed */
if (ret_val != prev)
*q_update = 1;
return ret_val;
}
#ifdef PACKET_TESTING
#include <stdio.h>
FILE *vpxlog = 0;
#endif
#if CONFIG_SUPERBLOCKS
static void
decode_sb_row(VP8D_COMP *pbi, VP8_COMMON *pc, int mbrow, MACROBLOCKD *xd)
{
int i;
int recon_yoffset, recon_uvoffset;
int mb_row, 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;
int sb_col;
int row_delta[4] = { 0, +1, 0, -1};
int col_delta[4] = {+1, -1, +1, +1};
int sb_cols = (pc->mb_cols + 1)>>1;
ENTROPY_CONTEXT_PLANES left_context[2];
vpx_memset(left_context, 0, sizeof(left_context));
mb_row = mbrow;
mb_col = 0;
for (sb_col=0; sb_col<sb_cols; sb_col++)
{
for ( i=0; i<4; i++ )
{
int dy = row_delta[i];
int dx = col_delta[i];
int offset_extended = dy * xd->mode_info_stride + dx;
if ((mb_row >= pc->mb_rows) || (mb_col >= pc->mb_cols))
{
// Skip on to the next MB
mb_row += dy;
mb_col += dx;
xd->mode_info_context += offset_extended;
continue;
}
// Copy in the appropriate left context
vpx_memcpy (&pc->left_context,
&left_context[(i>>1) & 0x1],
sizeof(ENTROPY_CONTEXT_PLANES));
// reset above block coeffs
xd->above_context = pc->above_context + 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_top_edge = -((mb_row * 16)) << 3;
xd->mb_to_bottom_edge = ((pc->mb_rows - 1 - mb_row) * 16) << 3;
xd->mb_to_left_edge = -((mb_col * 16) << 3);
xd->mb_to_right_edge = ((pc->mb_cols - 1 - mb_col) * 16) << 3;
xd->up_available = (mb_row != 0);
xd->left_available = (mb_col != 0);
#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
update_blockd_bmi(xd);
recon_yoffset = (mb_row * recon_y_stride * 16) + (mb_col * 16);
recon_uvoffset = (mb_row * recon_uv_stride * 8) + (mb_col * 8);
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;
/* 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.second_ref_frame)
{
int second_ref_fb_idx;
/* Select the appropriate reference frame for this MB */
if (xd->mode_info_context->mbmi.second_ref_frame == LAST_FRAME)
second_ref_fb_idx = pc->lst_fb_idx;
else if (xd->mode_info_context->mbmi.second_ref_frame ==
GOLDEN_FRAME)
second_ref_fb_idx = pc->gld_fb_idx;
else
second_ref_fb_idx = pc->alt_fb_idx;
xd->second_pre.y_buffer =
pc->yv12_fb[second_ref_fb_idx].y_buffer + recon_yoffset;
xd->second_pre.u_buffer =
pc->yv12_fb[second_ref_fb_idx].u_buffer + recon_uvoffset;
xd->second_pre.v_buffer =
pc->yv12_fb[second_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);
// Copy in the appropriate left context
vpx_memcpy (&left_context[(i>>1) & 0x1],
&pc->left_context,
sizeof(ENTROPY_CONTEXT_PLANES));
// skip to next MB
xd->mode_info_context += offset_extended;
mb_row += dy;
mb_col += dx;
}
}
/* skip prediction column */
xd->mode_info_context += 1 - (pc->mb_cols & 0x1) + xd->mode_info_stride;
}
#else
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
update_blockd_bmi(xd);
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.second_ref_frame)
{
int second_ref_fb_idx;
/* Select the appropriate reference frame for this MB */
if (xd->mode_info_context->mbmi.second_ref_frame == LAST_FRAME)
second_ref_fb_idx = pc->lst_fb_idx;
else if (xd->mode_info_context->mbmi.second_ref_frame == GOLDEN_FRAME)
second_ref_fb_idx = pc->gld_fb_idx;
else
second_ref_fb_idx = pc->alt_fb_idx;
xd->second_pre.y_buffer = pc->yv12_fb[second_ref_fb_idx].y_buffer + recon_yoffset;
xd->second_pre.u_buffer = pc->yv12_fb[second_ref_fb_idx].u_buffer + recon_uvoffset;
xd->second_pre.v_buffer = pc->yv12_fb[second_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;
}
#ifdef DEC_DEBUG
dec_debug = (pc->current_video_frame==1 && mb_row==4 && mb_col==0);
#endif
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 */
}
#endif // CONFIG_SUPERBLOCKS
static unsigned int read_partition_size(const unsigned char *cx_size)
{
const unsigned int size =
cx_size[0] + (cx_size[1] << 8) + (cx_size[2] << 16);
return size;
}
static void setup_token_decoder_partition_input(VP8D_COMP *pbi)
{
vp8_reader *bool_decoder = &pbi->bc2;
int part_idx = 1;
int num_token_partitions;
TOKEN_PARTITION multi_token_partition =
(TOKEN_PARTITION)vp8_read_literal(&pbi->bc, 2);
if (!vp8dx_bool_error(&pbi->bc))
pbi->common.multi_token_partition = multi_token_partition;
num_token_partitions = 1 << pbi->common.multi_token_partition;
if (num_token_partitions + 1 > pbi->num_partitions)
vpx_internal_error(&pbi->common.error, VPX_CODEC_CORRUPT_FRAME,
"Partitions missing");
assert(vp8dx_bool_error(&pbi->bc) ||
multi_token_partition == pbi->common.multi_token_partition);
if (pbi->num_partitions > 2)
{
CHECK_MEM_ERROR(pbi->mbc, vpx_malloc((pbi->num_partitions - 1) *
sizeof(vp8_reader)));
bool_decoder = pbi->mbc;
}
for (; part_idx < pbi->num_partitions; ++part_idx)
{
if (vp8dx_start_decode(bool_decoder,
pbi->partitions[part_idx],
pbi->partition_sizes[part_idx]))
vpx_internal_error(&pbi->common.error, VPX_CODEC_MEM_ERROR,
"Failed to allocate bool decoder %d",
part_idx);
bool_decoder++;
}
}
static int read_is_valid(const unsigned char *start,
size_t len,
const unsigned char *end)
{
return (start + len > start && start + len <= end);
}
static void setup_token_decoder(VP8D_COMP *pbi,
const unsigned char *cx_data)
{
int num_part;
int i;
VP8_COMMON *pc = &pbi->common;
const unsigned char *user_data_end = pbi->Source + pbi->source_sz;
vp8_reader *bool_decoder;
const unsigned char *partition;
/* Parse number of token partitions to use */
const TOKEN_PARTITION multi_token_partition =
(TOKEN_PARTITION)vp8_read_literal(&pbi->bc, 2);
/* Only update the multi_token_partition field if we are sure the value
* is correct. */
if (!pbi->ec_active || !vp8dx_bool_error(&pbi->bc))
pc->multi_token_partition = multi_token_partition;
num_part = 1 << pc->multi_token_partition;
/* Set up pointers to the first partition */
partition = cx_data;
bool_decoder = &pbi->bc2;
if (num_part > 1)
{
CHECK_MEM_ERROR(pbi->mbc, vpx_malloc(num_part * sizeof(vp8_reader)));
bool_decoder = pbi->mbc;
partition += 3 * (num_part - 1);
}
for (i = 0; i < num_part; i++)
{
const unsigned char *partition_size_ptr = cx_data + i * 3;
ptrdiff_t partition_size, bytes_left;
bytes_left = user_data_end - partition;
/* Calculate the length of this partition. The last partition
* size is implicit. If the partition size can't be read, then
* either use the remaining data in the buffer (for EC mode)
* or throw an error.
*/
if (i < num_part - 1)
{
if (read_is_valid(partition_size_ptr, 3, user_data_end))
partition_size = read_partition_size(partition_size_ptr);
else if (pbi->ec_active)
partition_size = bytes_left;
else
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
"Truncated partition size data");
}
else
partition_size = bytes_left;
/* Validate the calculated partition length. If the buffer
* described by the partition can't be fully read, then restrict
* it to the portion that can be (for EC mode) or throw an error.
*/
if (!read_is_valid(partition, partition_size, user_data_end))
{
if (pbi->ec_active)
partition_size = bytes_left;
else
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt partition "
"%d length", i + 1);
}
if (vp8dx_start_decode(bool_decoder, partition, partition_size))
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
"Failed to allocate bool decoder %d", i + 1);
/* Advance to the next partition */
partition += partition_size;
bool_decoder++;
}
}
static void stop_token_decoder(VP8D_COMP *pbi)
{
VP8_COMMON *pc = &pbi->common;
if (pc->multi_token_partition != ONE_PARTITION)
{
vpx_free(pbi->mbc);
pbi->mbc = NULL;
}
}
static void init_frame(VP8D_COMP *pbi)
{
VP8_COMMON *const pc = & pbi->common;
MACROBLOCKD *const xd = & pbi->mb;
if (pc->frame_type == KEY_FRAME)
{
/* Various keyframe initializations */
vpx_memcpy(pc->fc.mvc, vp8_default_mv_context, sizeof(vp8_default_mv_context));
vp8_init_mbmode_probs(pc);
vp8_default_coef_probs(pc);
vp8_kf_default_bmode_probs(pc->kf_bmode_prob);
// Reset the segment feature data to the default stats:
// Features disabled, 0, with delta coding (Default state).
clearall_segfeatures( xd );
xd->mb_segement_abs_delta = SEGMENT_DELTADATA;
/* reset the mode ref deltasa for loop filter */
vpx_memset(xd->ref_lf_deltas, 0, sizeof(xd->ref_lf_deltas));
vpx_memset(xd->mode_lf_deltas, 0, sizeof(xd->mode_lf_deltas));
/* All buffers are implicitly updated on key frames. */
pc->refresh_golden_frame = 1;
pc->refresh_alt_ref_frame = 1;
pc->copy_buffer_to_gf = 0;
pc->copy_buffer_to_arf = 0;
/* Note that Golden and Altref modes cannot be used on a key frame so
* ref_frame_sign_bias[] is undefined and meaningless
*/
pc->ref_frame_sign_bias[GOLDEN_FRAME] = 0;
pc->ref_frame_sign_bias[ALTREF_FRAME] = 0;
vpx_memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc));
vpx_memcpy(&pc->lfc_a, &pc->fc, sizeof(pc->fc));
vp8_init_mode_contexts(&pbi->common);
vpx_memcpy( pbi->common.vp8_mode_contexts,
pbi->common.mode_context,
sizeof(pbi->common.mode_context));
}
else
{
if (!pc->use_bilinear_mc_filter)
pc->mcomp_filter_type = SIXTAP;
else
pc->mcomp_filter_type = BILINEAR;
/* To enable choice of different interploation filters */
if (pc->mcomp_filter_type == SIXTAP)
{
xd->subpixel_predict = SUBPIX_INVOKE(RTCD_VTABLE(subpix), sixtap4x4);
xd->subpixel_predict8x4 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), sixtap8x4);
xd->subpixel_predict8x8 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), sixtap8x8);
xd->subpixel_predict16x16 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), sixtap16x16);
xd->subpixel_predict_avg8x8 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), sixtap_avg8x8);
xd->subpixel_predict_avg16x16 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), sixtap_avg16x16);
}
else
{
xd->subpixel_predict = SUBPIX_INVOKE(RTCD_VTABLE(subpix), bilinear4x4);
xd->subpixel_predict8x4 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), bilinear8x4);
xd->subpixel_predict8x8 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), bilinear8x8);
xd->subpixel_predict16x16 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), bilinear16x16);
xd->subpixel_predict_avg8x8 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), bilinear_avg8x8);
xd->subpixel_predict_avg16x16 = SUBPIX_INVOKE(RTCD_VTABLE(subpix), bilinear_avg16x16);
}
if (pbi->decoded_key_frame && pbi->ec_enabled && !pbi->ec_active)
pbi->ec_active = 1;
}
xd->left_context = &pc->left_context;
xd->mode_info_context = pc->mi;
xd->frame_type = pc->frame_type;
xd->mode_info_context->mbmi.mode = DC_PRED;
xd->mode_info_stride = pc->mode_info_stride;
xd->corrupted = 0; /* init without corruption */
xd->fullpixel_mask = 0xffffffff;
if(pc->full_pixel)
xd->fullpixel_mask = 0xfffffff8;
}
int vp8_decode_frame(VP8D_COMP *pbi)
{
vp8_reader *const bc = & pbi->bc;
VP8_COMMON *const pc = & pbi->common;
MACROBLOCKD *const xd = & pbi->mb;
const unsigned char *data = (const unsigned char *)pbi->Source;
const unsigned char *data_end = data + pbi->source_sz;
ptrdiff_t first_partition_length_in_bytes;
int mb_row;
int i, j, k, l;
int corrupt_tokens = 0;
int prev_independent_partitions = pbi->independent_partitions;
if (pbi->input_partition)
{
data = pbi->partitions[0];
data_end = data + pbi->partition_sizes[0];
}
/* start with no corruption of current frame */
xd->corrupted = 0;
pc->yv12_fb[pc->new_fb_idx].corrupted = 0;
if (data_end - data < 3)
{
if (pbi->ec_active)
{
/* Declare the missing frame as an inter frame since it will
be handled as an inter frame when we have estimated its
motion vectors. */
pc->frame_type = INTER_FRAME;
pc->version = 0;
pc->show_frame = 1;
first_partition_length_in_bytes = 0;
}
else
{
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
"Truncated packet");
}
}
else
{
pc->frame_type = (FRAME_TYPE)(data[0] & 1);
pc->version = (data[0] >> 1) & 7;
pc->show_frame = (data[0] >> 4) & 1;
first_partition_length_in_bytes =
(data[0] | (data[1] << 8) | (data[2] << 16)) >> 5;
if (!pbi->ec_active && (data + first_partition_length_in_bytes > data_end
|| data + first_partition_length_in_bytes < data))
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
"Truncated packet or corrupt partition 0 length");
data += 3;
vp8_setup_version(pc);
if (pc->frame_type == KEY_FRAME)
{
const int Width = pc->Width;
const int Height = pc->Height;
/* vet via sync code */
/* When error concealment is enabled we should only check the sync
* code if we have enough bits available
*/
if (!pbi->ec_active || data + 3 < data_end)
{
if (data[0] != 0x9d || data[1] != 0x01 || data[2] != 0x2a)
vpx_internal_error(&pc->error, VPX_CODEC_UNSUP_BITSTREAM,
"Invalid frame sync code");
}
/* If error concealment is enabled we should only parse the new size
* if we have enough data. Otherwise we will end up with the wrong
* size.
*/
if (!pbi->ec_active || data + 6 < data_end)
{
pc->Width = (data[3] | (data[4] << 8)) & 0x3fff;
pc->horiz_scale = data[4] >> 6;
pc->Height = (data[5] | (data[6] << 8)) & 0x3fff;
pc->vert_scale = data[6] >> 6;
}
data += 7;
if (Width != pc->Width || Height != pc->Height)
{
int prev_mb_rows = pc->mb_rows;
if (pc->Width <= 0)
{
pc->Width = Width;
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
"Invalid frame width");
}
if (pc->Height <= 0)
{
pc->Height = Height;
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
"Invalid frame height");
}
if (vp8_alloc_frame_buffers(pc, pc->Width, pc->Height))
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
"Failed to allocate frame buffers");
#if CONFIG_ERROR_CONCEALMENT
pbi->overlaps = NULL;
if (pbi->ec_enabled)
{
if (vp8_alloc_overlap_lists(pbi))
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
"Failed to allocate overlap lists "
"for error concealment");
}
#endif
}
}
}
if ((!pbi->decoded_key_frame && pc->frame_type != KEY_FRAME) ||
pc->Width == 0 || pc->Height == 0)
{
return -1;
}
init_frame(pbi);
if (vp8dx_start_decode(bc, data, data_end - data))
vpx_internal_error(&pc->error, VPX_CODEC_MEM_ERROR,
"Failed to allocate bool decoder 0");
if (pc->frame_type == KEY_FRAME) {
pc->clr_type = (YUV_TYPE)vp8_read_bit(bc);
pc->clamp_type = (CLAMP_TYPE)vp8_read_bit(bc);
}
/* Is segmentation enabled */
xd->segmentation_enabled = (unsigned char)vp8_read_bit(bc);
if (xd->segmentation_enabled)
{
// Read whether or not the segmentation map is being explicitly
// updated this frame.
xd->update_mb_segmentation_map = (unsigned char)vp8_read_bit(bc);
// If so what method will be used.
if ( xd->update_mb_segmentation_map )
pc->temporal_update = (unsigned char)vp8_read_bit(bc);
// Is the segment data being updated
xd->update_mb_segmentation_data = (unsigned char)vp8_read_bit(bc);
if (xd->update_mb_segmentation_data)
{
int data;
xd->mb_segement_abs_delta = (unsigned char)vp8_read_bit(bc);
clearall_segfeatures( xd );
// For each segmentation...
for (i = 0; i < MAX_MB_SEGMENTS; i++)
{
// For each of the segments features...
for (j = 0; j < SEG_LVL_MAX; j++)
{
#if CONFIG_FEATUREUPDATES
// feature updated?
if (vp8_read_bit(bc))
{
int active=1;
if ( segfeature_active( xd, i, j ))
active=vp8_read_bit(bc);
// Is the feature enabled
if (active)
{
// Update the feature data and mask
enable_segfeature(xd, i, j);
data = (signed char)vp8_read_literal(
bc, seg_feature_data_bits(j));
// Is the segment data signed..
if ( is_segfeature_signed(j) )
{
if (vp8_read_bit(bc))
data = - data;
}
}
else
data = 0;
set_segdata(xd, i, j, data);
}
#else
// Is the feature enabled
if (vp8_read_bit(bc))
{
// Update the feature data and mask
enable_segfeature(xd, i, j);
data = (signed char)vp8_read_literal(
bc, seg_feature_data_bits(j));
// Is the segment data signed..
if ( is_segfeature_signed(j) )
{
if (vp8_read_bit(bc))
data = - data;
}
}
else
data = 0;
set_segdata(xd, i, j, data);
#endif
}
}
}
if (xd->update_mb_segmentation_map)
{
// Which macro block level features are enabled
vpx_memset(xd->mb_segment_tree_probs, 255,
sizeof(xd->mb_segment_tree_probs));
vpx_memset(pc->segment_pred_probs, 255,
sizeof(pc->segment_pred_probs));
// Read the probs used to decode the segment id for each macro
// block.
for (i = 0; i < MB_FEATURE_TREE_PROBS; i++)
{
// If not explicitly set value is defaulted to 255 by
//memset above
if (vp8_read_bit(bc))
xd->mb_segment_tree_probs[i] =
(vp8_prob)vp8_read_literal(bc, 8);
}
// If predictive coding of segment map is enabled read the
// prediction probabilities.
if ( pc->temporal_update )
{
// Read the prediction probs needed to decode the segment id
// when predictive coding enabled
for (i = 0; i < PREDICTION_PROBS; i++)
{
// If not explicitly set value is defaulted to 255 by
// memset above
if (vp8_read_bit(bc))
pc->segment_pred_probs[i] =
(vp8_prob)vp8_read_literal(bc, 8);
}
}
}
}
// Read common prediction model status flag probability updates for the
// reference frame
if ( pc->frame_type == KEY_FRAME )
{
// Set the prediction probabilities to defaults
pc->ref_pred_probs[0] = 120;
pc->ref_pred_probs[1] = 80;
pc->ref_pred_probs[2] = 40;
}
else
{
for (i = 0; i < PREDICTION_PROBS; i++)
{
if ( vp8_read_bit(bc) )
pc->ref_pred_probs[i] = (vp8_prob)vp8_read_literal(bc, 8);
}
}
/* Read the loop filter level and type */
#if CONFIG_T8X8
pc->txfm_mode = (TXFM_MODE) vp8_read_bit(bc);
#endif
pc->filter_type = (LOOPFILTERTYPE) vp8_read_bit(bc);
pc->filter_level = vp8_read_literal(bc, 6);
pc->sharpness_level = vp8_read_literal(bc, 3);
/* Read in loop filter deltas applied at the MB level based on mode or ref frame. */
xd->mode_ref_lf_delta_update = 0;
xd->mode_ref_lf_delta_enabled = (unsigned char)vp8_read_bit(bc);
if (xd->mode_ref_lf_delta_enabled)
{
/* Do the deltas need to be updated */
xd->mode_ref_lf_delta_update = (unsigned char)vp8_read_bit(bc);
if (xd->mode_ref_lf_delta_update)
{
/* Send update */
for (i = 0; i < MAX_REF_LF_DELTAS; i++)
{
if (vp8_read_bit(bc))
{
/*sign = vp8_read_bit( bc );*/
xd->ref_lf_deltas[i] = (signed char)vp8_read_literal(bc, 6);
if (vp8_read_bit(bc)) /* Apply sign */
xd->ref_lf_deltas[i] = xd->ref_lf_deltas[i] * -1;
}
}
/* Send update */
for (i = 0; i < MAX_MODE_LF_DELTAS; i++)
{
if (vp8_read_bit(bc))
{
/*sign = vp8_read_bit( bc );*/
xd->mode_lf_deltas[i] = (signed char)vp8_read_literal(bc, 6);
if (vp8_read_bit(bc)) /* Apply sign */
xd->mode_lf_deltas[i] = xd->mode_lf_deltas[i] * -1;
}
}
}
}
if (pbi->input_partition)
{
setup_token_decoder_partition_input(pbi);
}
else
{
setup_token_decoder(pbi, data + first_partition_length_in_bytes);
}
xd->current_bc = &pbi->bc2;
/* Read the default quantizers. */
{
int Q, q_update;
Q = vp8_read_literal(bc, QINDEX_BITS); /* AC 1st order Q = default */
pc->base_qindex = Q;
q_update = 0;
pc->y1dc_delta_q = get_delta_q(bc, pc->y1dc_delta_q, &q_update);
pc->y2dc_delta_q = get_delta_q(bc, pc->y2dc_delta_q, &q_update);
pc->y2ac_delta_q = get_delta_q(bc, pc->y2ac_delta_q, &q_update);
pc->uvdc_delta_q = get_delta_q(bc, pc->uvdc_delta_q, &q_update);
pc->uvac_delta_q = get_delta_q(bc, pc->uvac_delta_q, &q_update);
if (q_update)
vp8cx_init_de_quantizer(pbi);
/* MB level dequantizer setup */
mb_init_dequantizer(pbi, &pbi->mb);
}
/* Determine if the golden frame or ARF buffer should be updated and how.
* For all non key frames the GF and ARF refresh flags and sign bias
* flags must be set explicitly.
*/
if (pc->frame_type != KEY_FRAME)
{
/* Should the GF or ARF be updated from the current frame */
pc->refresh_golden_frame = vp8_read_bit(bc);
#if CONFIG_ERROR_CONCEALMENT
/* Assume we shouldn't refresh golden if the bit is missing */
xd->corrupted |= vp8dx_bool_error(bc);
if (pbi->ec_active && xd->corrupted)
pc->refresh_golden_frame = 0;
#endif
pc->refresh_alt_ref_frame = vp8_read_bit(bc);
#if CONFIG_ERROR_CONCEALMENT
/* Assume we shouldn't refresh altref if the bit is missing */
xd->corrupted |= vp8dx_bool_error(bc);
if (pbi->ec_active && xd->corrupted)
pc->refresh_alt_ref_frame = 0;
#endif
if(pc->refresh_alt_ref_frame)
{
vpx_memcpy(&pc->fc, &pc->lfc_a, sizeof(pc->fc));
vpx_memcpy( pc->vp8_mode_contexts,
pc->mode_context_a,
sizeof(pc->vp8_mode_contexts));
}
else
{
vpx_memcpy(&pc->fc, &pc->lfc, sizeof(pc->fc));
vpx_memcpy( pc->vp8_mode_contexts,
pc->mode_context,
sizeof(pc->vp8_mode_contexts));
}
/* Buffer to buffer copy flags. */
pc->copy_buffer_to_gf = 0;
if (!pc->refresh_golden_frame)
pc->copy_buffer_to_gf = vp8_read_literal(bc, 2);
pc->copy_buffer_to_arf = 0;
if (!pc->refresh_alt_ref_frame)
pc->copy_buffer_to_arf = vp8_read_literal(bc, 2);
pc->ref_frame_sign_bias[GOLDEN_FRAME] = vp8_read_bit(bc);
pc->ref_frame_sign_bias[ALTREF_FRAME] = vp8_read_bit(bc);
}
pc->refresh_entropy_probs = vp8_read_bit(bc);
if (pc->refresh_entropy_probs == 0)
{
vpx_memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc));
}
pc->refresh_last_frame = pc->frame_type == KEY_FRAME || vp8_read_bit(bc);
#if CONFIG_ERROR_CONCEALMENT
/* Assume we should refresh the last frame if the bit is missing */
xd->corrupted |= vp8dx_bool_error(bc);
if (pbi->ec_active && xd->corrupted)
pc->refresh_last_frame = 1;
#endif
if (0)
{
FILE *z = fopen("decodestats.stt", "a");
fprintf(z, "%6d F:%d,G:%d,A:%d,L:%d,Q:%d\n",
pc->current_video_frame,
pc->frame_type,
pc->refresh_golden_frame,
pc->refresh_alt_ref_frame,
pc->refresh_last_frame,
pc->base_qindex);
fclose(z);
}
{
pbi->independent_partitions = 1;
if(vp8_read_bit(bc))
{
/* read coef probability tree */
for (i = 0; i < BLOCK_TYPES; i++)
for (j = 0; j < COEF_BANDS; j++)
for (k = 0; k < PREV_COEF_CONTEXTS; k++)
for (l = 0; l < ENTROPY_NODES; l++)
{
vp8_prob *const p = pc->fc.coef_probs [i][j][k] + l;
if (vp8_read(bc, vp8_coef_update_probs [i][j][k][l]))
{
*p = (vp8_prob)vp8_read_literal(bc, 8);
}
if (k > 0 && *p != pc->fc.coef_probs[i][j][k-1][l])
pbi->independent_partitions = 0;
}
}
}
#if CONFIG_T8X8
if(pbi->common.txfm_mode == ALLOW_8X8 && vp8_read_bit(bc))
{
// read coef probability tree
for (i = 0; i < BLOCK_TYPES; i++)
for (j = 0; j < COEF_BANDS; j++)
for (k = 0; k < PREV_COEF_CONTEXTS; k++)
for (l = 0; l < MAX_ENTROPY_TOKENS - 1; l++)
{
vp8_prob *const p = pc->fc.coef_probs_8x8 [i][j][k] + l;
if (vp8_read(bc, vp8_coef_update_probs_8x8 [i][j][k][l]))
{
*p = (vp8_prob)vp8_read_literal(bc, 8);
}
}
}
#endif
vpx_memcpy(&xd->pre, &pc->yv12_fb[pc->lst_fb_idx], sizeof(YV12_BUFFER_CONFIG));
vpx_memcpy(&xd->dst, &pc->yv12_fb[pc->new_fb_idx], sizeof(YV12_BUFFER_CONFIG));
// Create the segmentation map structure and set to 0
if (!pc->last_frame_seg_map)
CHECK_MEM_ERROR(pc->last_frame_seg_map,
vpx_calloc((pc->mb_rows * pc->mb_cols), 1));
/* set up frame new frame for intra coded blocks */
vp8_setup_intra_recon(&pc->yv12_fb[pc->new_fb_idx]);
vp8_setup_block_dptrs(xd);
vp8_build_block_doffsets(xd);
/* clear out the coeff buffer */
vpx_memset(xd->qcoeff, 0, sizeof(xd->qcoeff));
/* Read the mb_no_coeff_skip flag */
pc->mb_no_coeff_skip = (int)vp8_read_bit(bc);
vp8_decode_mode_mvs(pbi);
if(pbi->common.frame_type != KEY_FRAME)
{
vp8_update_mode_context(&pbi->common);
}
#if CONFIG_ERROR_CONCEALMENT
if (pbi->ec_active &&
pbi->mvs_corrupt_from_mb < (unsigned int)pc->mb_cols * pc->mb_rows)
{
/* Motion vectors are missing in this frame. We will try to estimate
* them and then continue decoding the frame as usual */
vp8_estimate_missing_mvs(pbi);
}
#endif
vpx_memset(pc->above_context, 0, sizeof(ENTROPY_CONTEXT_PLANES) * pc->mb_cols);
// Resset the macroblock mode info context to the start of the list
xd->mode_info_context = pc->mi;
{
int ibc = 0;
int num_part = 1 << pc->multi_token_partition;
pbi->frame_corrupt_residual = 0;
#if CONFIG_SUPERBLOCKS
/* Decode a row of super-blocks */
for (mb_row = 0; mb_row < pc->mb_rows; mb_row+=2)
{
if (num_part > 1)
{
xd->current_bc = & pbi->mbc[ibc];
ibc++;
if (ibc == num_part)
ibc = 0;
}
decode_sb_row(pbi, pc, mb_row, xd);
}
#else
/* Decode a row of macro blocks */
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;
}
decode_mb_row(pbi, pc, mb_row, xd);
}
#endif /* CONFIG_SUPERBLOCKS */
corrupt_tokens |= xd->corrupted;
}
stop_token_decoder(pbi);
/* Collect information about decoder corruption. */
/* 1. Check first boolean decoder for errors. */
pc->yv12_fb[pc->new_fb_idx].corrupted = vp8dx_bool_error(bc);
/* 2. Check the macroblock information */
pc->yv12_fb[pc->new_fb_idx].corrupted |= corrupt_tokens;
if (!pbi->decoded_key_frame)
{
if (pc->frame_type == KEY_FRAME &&
!pc->yv12_fb[pc->new_fb_idx].corrupted)
pbi->decoded_key_frame = 1;
else
vpx_internal_error(&pbi->common.error, VPX_CODEC_CORRUPT_FRAME,
"A stream must start with a complete key frame");
}
/* vpx_log("Decoder: Frame Decoded, Size Roughly:%d bytes \n",bc->pos+pbi->bc2.pos); */
/* If this was a kf or Gf note the Q used */
if ((pc->frame_type == KEY_FRAME) ||
pc->refresh_golden_frame || pc->refresh_alt_ref_frame)
{
pc->last_kf_gf_q = pc->base_qindex;
}
if(pc->refresh_entropy_probs)
{
if(pc->refresh_alt_ref_frame)
vpx_memcpy(&pc->lfc_a, &pc->fc, sizeof(pc->fc));
else
vpx_memcpy(&pc->lfc, &pc->fc, sizeof(pc->fc));
}
#ifdef PACKET_TESTING
{
FILE *f = fopen("decompressor.VP8", "ab");
unsigned int size = pbi->bc2.pos + pbi->bc.pos + 8;
fwrite((void *) &size, 4, 1, f);
fwrite((void *) pbi->Source, size, 1, f);
fclose(f);
}
#endif
//printf("Frame %d Done\n", frame_count++);
return 0;
}
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