* Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file cavs.c
+ * @file libavcodec/cavs.c
* Chinese AVS video (AVS1-P2, JiZhun profile) decoder
* @author Stefan Gehrer <stefan.gehrer@gmx.de>
*/
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
-#include "mpegvideo.h"
+#include "mathops.h"
+#include "cavs.h"
#include "cavsdata.h"
-typedef struct {
- MpegEncContext s;
- Picture picture; ///< currently decoded frame
- Picture DPB[2]; ///< reference frames
- int dist[2]; ///< temporal distances from current frame to ref frames
- int profile, level;
- int aspect_ratio;
- int mb_width, mb_height;
- int pic_type;
- int progressive;
- int pic_structure;
- int skip_mode_flag; ///< select between skip_count or one skip_flag per MB
- int loop_filter_disable;
- int alpha_offset, beta_offset;
- int ref_flag;
- int mbx, mby; ///< macroblock coordinates
- int flags; ///< availability flags of neighbouring macroblocks
- int stc; ///< last start code
- uint8_t *cy, *cu, *cv; ///< current MB sample pointers
- int left_qp;
- uint8_t *top_qp;
-
- /** mv motion vector cache
- 0: D3 B2 B3 C2
- 4: A1 X0 X1 -
- 8: A3 X2 X3 -
-
- X are the vectors in the current macroblock (5,6,9,10)
- A is the macroblock to the left (4,8)
- B is the macroblock to the top (1,2)
- C is the macroblock to the top-right (3)
- D is the macroblock to the top-left (0)
-
- the same is repeated for backward motion vectors */
- vector_t mv[2*4*3];
- vector_t *top_mv[2];
- vector_t *col_mv;
-
- /** luma pred mode cache
- 0: -- B2 B3
- 3: A1 X0 X1
- 6: A3 X2 X3 */
- int pred_mode_Y[3*3];
- int *top_pred_Y;
- int l_stride, c_stride;
- int luma_scan[4];
- int qp;
- int qp_fixed;
- int cbp;
-
- /** intra prediction is done with un-deblocked samples
- they are saved here before deblocking the MB */
- uint8_t *top_border_y, *top_border_u, *top_border_v;
- uint8_t left_border_y[16], left_border_u[10], left_border_v[10];
- uint8_t topleft_border_y, topleft_border_u, topleft_border_v;
-
- void (*intra_pred_l[8])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
- void (*intra_pred_c[7])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
- uint8_t *col_type_base;
- uint8_t *col_type;
-
- /* scaling factors for MV prediction */
- int sym_factor; ///< for scaling in symmetrical B block
- int direct_den[2]; ///< for scaling in direct B block
- int scale_den[2]; ///< for scaling neighbouring MVs
-
- int got_keyframe;
-} AVSContext;
-
/*****************************************************************************
*
* in-loop deblocking filter
*
****************************************************************************/
-static inline int get_bs(vector_t *mvP, vector_t *mvQ, int b) {
+static inline int get_bs(cavs_vector *mvP, cavs_vector *mvQ, int b) {
if((mvP->ref == REF_INTRA) || (mvQ->ref == REF_INTRA))
return 2;
if( (abs(mvP->x - mvQ->x) >= 4) || (abs(mvP->y - mvQ->y) >= 4) )
}
#define SET_PARAMS \
- alpha = alpha_tab[clip(qp_avg + h->alpha_offset,0,63)]; \
- beta = beta_tab[clip(qp_avg + h->beta_offset, 0,63)]; \
- tc = tc_tab[clip(qp_avg + h->alpha_offset,0,63)];
+ alpha = alpha_tab[av_clip(qp_avg + h->alpha_offset,0,63)]; \
+ beta = beta_tab[av_clip(qp_avg + h->beta_offset, 0,63)]; \
+ tc = tc_tab[av_clip(qp_avg + h->alpha_offset,0,63)];
/**
* in-loop deblocking filter for a single macroblock
* ---------
*
*/
-static void filter_mb(AVSContext *h, enum mb_t mb_type) {
+void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type) {
DECLARE_ALIGNED_8(uint8_t, bs[8]);
int qp_avg, alpha, beta, tc;
int i;
memcpy(&h->top_border_u[h->mbx*10+1], h->cu + 7* h->c_stride,8);
memcpy(&h->top_border_v[h->mbx*10+1], h->cv + 7* h->c_stride,8);
for(i=0;i<8;i++) {
- h->left_border_y[i*2+0] = *(h->cy + 15 + (i*2+0)*h->l_stride);
- h->left_border_y[i*2+1] = *(h->cy + 15 + (i*2+1)*h->l_stride);
+ h->left_border_y[i*2+1] = *(h->cy + 15 + (i*2+0)*h->l_stride);
+ h->left_border_y[i*2+2] = *(h->cy + 15 + (i*2+1)*h->l_stride);
h->left_border_u[i+1] = *(h->cu + 7 + i*h->c_stride);
h->left_border_v[i+1] = *(h->cv + 7 + i*h->c_stride);
}
*((uint64_t *)bs) = 0x0202020202020202ULL;
else{
*((uint64_t *)bs) = 0;
- if(partition_flags[mb_type] & SPLITV){
+ if(ff_cavs_partition_flags[mb_type] & SPLITV){
bs[2] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X1], mb_type > P_8X8);
bs[3] = get_bs(&h->mv[MV_FWD_X2], &h->mv[MV_FWD_X3], mb_type > P_8X8);
}
- if(partition_flags[mb_type] & SPLITH){
+ if(ff_cavs_partition_flags[mb_type] & SPLITH){
bs[6] = get_bs(&h->mv[MV_FWD_X0], &h->mv[MV_FWD_X2], mb_type > P_8X8);
bs[7] = get_bs(&h->mv[MV_FWD_X1], &h->mv[MV_FWD_X3], mb_type > P_8X8);
}
*
****************************************************************************/
-static inline void load_intra_pred_luma(AVSContext *h, uint8_t *top,
- uint8_t *left, int block) {
+void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top,
+ uint8_t **left, int block) {
int i;
switch(block) {
case 0:
- memcpy(&left[1],h->left_border_y,16);
- left[0] = left[1];
- left[17] = left[16];
+ *left = h->left_border_y;
+ h->left_border_y[0] = h->left_border_y[1];
+ memset(&h->left_border_y[17],h->left_border_y[16],9);
memcpy(&top[1],&h->top_border_y[h->mbx*16],16);
top[17] = top[16];
top[0] = top[1];
if((h->flags & A_AVAIL) && (h->flags & B_AVAIL))
- left[0] = top[0] = h->topleft_border_y;
+ h->left_border_y[0] = top[0] = h->topleft_border_y;
break;
case 1:
+ *left = h->intern_border_y;
for(i=0;i<8;i++)
- left[i+1] = *(h->cy + 7 + i*h->l_stride);
- memset(&left[9],left[8],9);
- left[0] = left[1];
+ h->intern_border_y[i+1] = *(h->cy + 7 + i*h->l_stride);
+ memset(&h->intern_border_y[9],h->intern_border_y[8],9);
+ h->intern_border_y[0] = h->intern_border_y[1];
memcpy(&top[1],&h->top_border_y[h->mbx*16+8],8);
if(h->flags & C_AVAIL)
memcpy(&top[9],&h->top_border_y[(h->mbx + 1)*16],8);
top[17] = top[16];
top[0] = top[1];
if(h->flags & B_AVAIL)
- left[0] = top[0] = h->top_border_y[h->mbx*16+7];
+ h->intern_border_y[0] = top[0] = h->top_border_y[h->mbx*16+7];
break;
case 2:
- memcpy(&left[1],&h->left_border_y[8],8);
- memset(&left[9],left[8],9);
+ *left = &h->left_border_y[8];
memcpy(&top[1],h->cy + 7*h->l_stride,16);
top[17] = top[16];
- left[0] = h->left_border_y[7];
top[0] = top[1];
if(h->flags & A_AVAIL)
- top[0] = left[0];
+ top[0] = h->left_border_y[8];
break;
case 3:
- for(i=0;i<9;i++)
- left[i] = *(h->cy + 7 + (i+7)*h->l_stride);
- memset(&left[9],left[8],9);
+ *left = &h->intern_border_y[8];
+ for(i=0;i<8;i++)
+ h->intern_border_y[i+9] = *(h->cy + 7 + (i+8)*h->l_stride);
+ memset(&h->intern_border_y[17],h->intern_border_y[16],9);
memcpy(&top[0],h->cy + 7 + 7*h->l_stride,9);
memset(&top[9],top[8],9);
break;
}
}
+void ff_cavs_load_intra_pred_chroma(AVSContext *h) {
+ /* extend borders by one pixel */
+ h->left_border_u[9] = h->left_border_u[8];
+ h->left_border_v[9] = h->left_border_v[8];
+ h->top_border_u[h->mbx*10+9] = h->top_border_u[h->mbx*10+8];
+ h->top_border_v[h->mbx*10+9] = h->top_border_v[h->mbx*10+8];
+ if(h->mbx && h->mby) {
+ h->top_border_u[h->mbx*10] = h->left_border_u[0] = h->topleft_border_u;
+ h->top_border_v[h->mbx*10] = h->left_border_v[0] = h->topleft_border_v;
+ } else {
+ h->left_border_u[0] = h->left_border_u[1];
+ h->left_border_v[0] = h->left_border_v[1];
+ h->top_border_u[h->mbx*10] = h->top_border_u[h->mbx*10+1];
+ h->top_border_v[h->mbx*10] = h->top_border_v[h->mbx*10+1];
+ }
+}
+
static void intra_pred_vert(uint8_t *d,uint8_t *top,uint8_t *left,int stride) {
int y;
- uint64_t a = unaligned64(&top[1]);
+ uint64_t a = AV_RN64(&top[1]);
for(y=0;y<8;y++) {
*((uint64_t *)(d+y*stride)) = a;
}
int x,y,ia;
int ih = 0;
int iv = 0;
- uint8_t *cm = cropTbl + MAX_NEG_CROP;
+ uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
for(x=0; x<4; x++) {
ih += (x+1)*(top[5+x]-top[3-x]);
#undef LOWPASS
-static inline void modify_pred(const int_fast8_t *mod_table, int *mode) {
- *mode = mod_table[*mode];
- if(*mode < 0) {
- av_log(NULL, AV_LOG_ERROR, "Illegal intra prediction mode\n");
- *mode = 0;
+void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv) {
+ /* save pred modes before they get modified */
+ h->pred_mode_Y[3] = h->pred_mode_Y[5];
+ h->pred_mode_Y[6] = h->pred_mode_Y[8];
+ h->top_pred_Y[h->mbx*2+0] = h->pred_mode_Y[7];
+ h->top_pred_Y[h->mbx*2+1] = h->pred_mode_Y[8];
+
+ /* modify pred modes according to availability of neighbour samples */
+ if(!(h->flags & A_AVAIL)) {
+ modify_pred(ff_left_modifier_l, &h->pred_mode_Y[4] );
+ modify_pred(ff_left_modifier_l, &h->pred_mode_Y[7] );
+ modify_pred(ff_left_modifier_c, pred_mode_uv );
+ }
+ if(!(h->flags & B_AVAIL)) {
+ modify_pred(ff_top_modifier_l, &h->pred_mode_Y[4] );
+ modify_pred(ff_top_modifier_l, &h->pred_mode_Y[5] );
+ modify_pred(ff_top_modifier_c, pred_mode_uv );
}
}
int chroma_height,int delta,int list,uint8_t *dest_y,
uint8_t *dest_cb,uint8_t *dest_cr,int src_x_offset,
int src_y_offset,qpel_mc_func *qpix_op,
- h264_chroma_mc_func chroma_op,vector_t *mv){
+ h264_chroma_mc_func chroma_op,cavs_vector *mv){
MpegEncContext * const s = &h->s;
const int mx= mv->x + src_x_offset*8;
const int my= mv->y + src_y_offset*8;
uint8_t *dest_y,uint8_t *dest_cb,uint8_t *dest_cr,
int x_offset, int y_offset,qpel_mc_func *qpix_put,
h264_chroma_mc_func chroma_put,qpel_mc_func *qpix_avg,
- h264_chroma_mc_func chroma_avg, vector_t *mv){
+ h264_chroma_mc_func chroma_avg, cavs_vector *mv){
qpel_mc_func *qpix_op= qpix_put;
h264_chroma_mc_func chroma_op= chroma_put;
}
}
-static void inter_pred(AVSContext *h, enum mb_t mb_type) {
- if(partition_flags[mb_type] == 0){ // 16x16
+void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type) {
+ if(ff_cavs_partition_flags[mb_type] == 0){ // 16x16
mc_part_std(h, 1, 8, 0, h->cy, h->cu, h->cv, 0, 0,
h->s.dsp.put_cavs_qpel_pixels_tab[0],
h->s.dsp.put_h264_chroma_pixels_tab[0],
h->s.dsp.avg_cavs_qpel_pixels_tab[1],
h->s.dsp.avg_h264_chroma_pixels_tab[1],&h->mv[MV_FWD_X3]);
}
- /* set intra prediction modes to default values */
- h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP;
- h->top_pred_Y[h->mbx*2+0] = h->top_pred_Y[h->mbx*2+1] = INTRA_L_LP;
}
/*****************************************************************************
*
****************************************************************************/
-static inline void set_mvs(vector_t *mv, enum block_t size) {
- switch(size) {
- case BLK_16X16:
- mv[MV_STRIDE ] = mv[0];
- mv[MV_STRIDE+1] = mv[0];
- case BLK_16X8:
- mv[1] = mv[0];
- break;
- case BLK_8X16:
- mv[MV_STRIDE] = mv[0];
- break;
- }
-}
-
-static inline void store_mvs(AVSContext *h) {
- h->col_mv[(h->mby*h->mb_width + h->mbx)*4 + 0] = h->mv[MV_FWD_X0];
- h->col_mv[(h->mby*h->mb_width + h->mbx)*4 + 1] = h->mv[MV_FWD_X1];
- h->col_mv[(h->mby*h->mb_width + h->mbx)*4 + 2] = h->mv[MV_FWD_X2];
- h->col_mv[(h->mby*h->mb_width + h->mbx)*4 + 3] = h->mv[MV_FWD_X3];
-}
-
-static inline void scale_mv(AVSContext *h, int *d_x, int *d_y, vector_t *src, int distp) {
+static inline void scale_mv(AVSContext *h, int *d_x, int *d_y, cavs_vector *src, int distp) {
int den = h->scale_den[src->ref];
*d_x = (src->x*distp*den + 256 + (src->x>>31)) >> 9;
*d_y = (src->y*distp*den + 256 + (src->y>>31)) >> 9;
}
-static inline void mv_pred_median(AVSContext *h, vector_t *mvP, vector_t *mvA, vector_t *mvB, vector_t *mvC) {
+static inline void mv_pred_median(AVSContext *h, cavs_vector *mvP,
+ cavs_vector *mvA, cavs_vector *mvB, cavs_vector *mvC) {
int ax, ay, bx, by, cx, cy;
int len_ab, len_bc, len_ca, len_mid;
}
}
-static inline void mv_pred_direct(AVSContext *h, vector_t *pmv_fw,
- vector_t *col_mv) {
- vector_t *pmv_bw = pmv_fw + MV_BWD_OFFS;
- int den = h->direct_den[col_mv->ref];
- int m = col_mv->x >> 31;
-
- pmv_fw->dist = h->dist[1];
- pmv_bw->dist = h->dist[0];
- pmv_fw->ref = 1;
- pmv_bw->ref = 0;
- /* scale the co-located motion vector according to its temporal span */
- pmv_fw->x = (((den+(den*col_mv->x*pmv_fw->dist^m)-m-1)>>14)^m)-m;
- pmv_bw->x = m-(((den+(den*col_mv->x*pmv_bw->dist^m)-m-1)>>14)^m);
- m = col_mv->y >> 31;
- pmv_fw->y = (((den+(den*col_mv->y*pmv_fw->dist^m)-m-1)>>14)^m)-m;
- pmv_bw->y = m-(((den+(den*col_mv->y*pmv_bw->dist^m)-m-1)>>14)^m);
-}
-
-static inline void mv_pred_sym(AVSContext *h, vector_t *src, enum block_t size) {
- vector_t *dst = src + MV_BWD_OFFS;
-
- /* backward mv is the scaled and negated forward mv */
- dst->x = -((src->x * h->sym_factor + 256) >> 9);
- dst->y = -((src->y * h->sym_factor + 256) >> 9);
- dst->ref = 0;
- dst->dist = h->dist[0];
- set_mvs(dst, size);
-}
-
-static void mv_pred(AVSContext *h, enum mv_loc_t nP, enum mv_loc_t nC,
- enum mv_pred_t mode, enum block_t size, int ref) {
- vector_t *mvP = &h->mv[nP];
- vector_t *mvA = &h->mv[nP-1];
- vector_t *mvB = &h->mv[nP-4];
- vector_t *mvC = &h->mv[nC];
+void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC,
+ enum cavs_mv_pred mode, enum cavs_block size, int ref) {
+ cavs_vector *mvP = &h->mv[nP];
+ cavs_vector *mvA = &h->mv[nP-1];
+ cavs_vector *mvB = &h->mv[nP-4];
+ cavs_vector *mvC = &h->mv[nC];
+ const cavs_vector *mvP2 = NULL;
mvP->ref = ref;
mvP->dist = h->dist[mvP->ref];
if(mvC->ref == NOT_AVAIL)
mvC = &h->mv[nP-5]; // set to top-left (mvD)
- if(mode == MV_PRED_PSKIP) {
- if((mvA->ref == NOT_AVAIL) || (mvB->ref == NOT_AVAIL) ||
+ if((mode == MV_PRED_PSKIP) &&
+ ((mvA->ref == NOT_AVAIL) || (mvB->ref == NOT_AVAIL) ||
((mvA->x | mvA->y | mvA->ref) == 0) ||
- ((mvB->x | mvB->y | mvB->ref) == 0) ) {
- mvP->x = mvP->y = 0;
- set_mvs(mvP,size);
- return;
- }
- }
+ ((mvB->x | mvB->y | mvB->ref) == 0) )) {
+ mvP2 = &ff_cavs_un_mv;
/* if there is only one suitable candidate, take it */
- if((mvA->ref >= 0) && (mvB->ref < 0) && (mvC->ref < 0)) {
- mvP->x = mvA->x;
- mvP->y = mvA->y;
+ } else if((mvA->ref >= 0) && (mvB->ref < 0) && (mvC->ref < 0)) {
+ mvP2= mvA;
} else if((mvA->ref < 0) && (mvB->ref >= 0) && (mvC->ref < 0)) {
- mvP->x = mvB->x;
- mvP->y = mvB->y;
+ mvP2= mvB;
} else if((mvA->ref < 0) && (mvB->ref < 0) && (mvC->ref >= 0)) {
- mvP->x = mvC->x;
- mvP->y = mvC->y;
- } else {
- switch(mode) {
- case MV_PRED_LEFT:
- if(mvA->ref == mvP->ref) {
- mvP->x = mvA->x;
- mvP->y = mvA->y;
- } else
- mv_pred_median(h, mvP, mvA, mvB, mvC);
- break;
- case MV_PRED_TOP:
- if(mvB->ref == mvP->ref) {
- mvP->x = mvB->x;
- mvP->y = mvB->y;
- } else
- mv_pred_median(h, mvP, mvA, mvB, mvC);
- break;
- case MV_PRED_TOPRIGHT:
- if(mvC->ref == mvP->ref) {
- mvP->x = mvC->x;
- mvP->y = mvC->y;
- } else
- mv_pred_median(h, mvP, mvA, mvB, mvC);
- break;
- default:
- mv_pred_median(h, mvP, mvA, mvB, mvC);
- break;
- }
- }
+ mvP2= mvC;
+ } else if(mode == MV_PRED_LEFT && mvA->ref == ref){
+ mvP2= mvA;
+ } else if(mode == MV_PRED_TOP && mvB->ref == ref){
+ mvP2= mvB;
+ } else if(mode == MV_PRED_TOPRIGHT && mvC->ref == ref){
+ mvP2= mvC;
+ }
+ if(mvP2){
+ mvP->x = mvP2->x;
+ mvP->y = mvP2->y;
+ }else
+ mv_pred_median(h, mvP, mvA, mvB, mvC);
+
if(mode < MV_PRED_PSKIP) {
mvP->x += get_se_golomb(&h->s.gb);
mvP->y += get_se_golomb(&h->s.gb);
set_mvs(mvP,size);
}
-/*****************************************************************************
- *
- * residual data decoding
- *
- ****************************************************************************/
-
-/** kth-order exponential golomb code */
-static inline int get_ue_code(GetBitContext *gb, int order) {
- if(order) {
- int ret = get_ue_golomb(gb) << order;
- return ret + get_bits(gb,order);
- }
- return get_ue_golomb(gb);
-}
-
-/**
- * decode coefficients from one 8x8 block, dequantize, inverse transform
- * and add them to sample block
- * @param r pointer to 2D VLC table
- * @param esc_golomb_order escape codes are k-golomb with this order k
- * @param qp quantizer
- * @param dst location of sample block
- * @param stride line stride in frame buffer
- */
-static int decode_residual_block(AVSContext *h, GetBitContext *gb,
- const residual_vlc_t *r, int esc_golomb_order,
- int qp, uint8_t *dst, int stride) {
- int i,pos = -1;
- int level_code, esc_code, level, run, mask;
- int level_buf[64];
- int run_buf[64];
- int dqm = dequant_mul[qp];
- int dqs = dequant_shift[qp];
- int dqa = 1 << (dqs - 1);
- const uint8_t *scantab = ff_zigzag_direct;
- DCTELEM block[64];
-
- memset(block,0,64*sizeof(DCTELEM));
- for(i=0;i<65;i++) {
- level_code = get_ue_code(gb,r->golomb_order);
- if(level_code >= ESCAPE_CODE) {
- run = (level_code - ESCAPE_CODE) >> 1;
- esc_code = get_ue_code(gb,esc_golomb_order);
- level = esc_code + (run > r->max_run ? 1 : r->level_add[run]);
- while(level > r->inc_limit)
- r++;
- mask = -(level_code & 1);
- level = (level^mask) - mask;
- } else {
- if(level_code < 0)
- return -1;
- level = r->rltab[level_code][0];
- if(!level) //end of block signal
- break;
- run = r->rltab[level_code][1];
- r += r->rltab[level_code][2];
- }
- level_buf[i] = level;
- run_buf[i] = run;
- }
- /* inverse scan and dequantization */
- while(--i >= 0){
- pos += 1 + run_buf[i];
- if(pos > 63) {
- av_log(h->s.avctx, AV_LOG_ERROR,
- "position out of block bounds at pic %d MB(%d,%d)\n",
- h->picture.poc, h->mbx, h->mby);
- return -1;
- }
- block[scantab[pos]] = (level_buf[i]*dqm + dqa) >> dqs;
- }
- h->s.dsp.cavs_idct8_add(dst,block,stride);
- return 0;
-}
-
-
-static inline void decode_residual_chroma(AVSContext *h) {
- if(h->cbp & (1<<4))
- decode_residual_block(h,&h->s.gb,chroma_2dvlc,0, chroma_qp[h->qp],
- h->cu,h->c_stride);
- if(h->cbp & (1<<5))
- decode_residual_block(h,&h->s.gb,chroma_2dvlc,0, chroma_qp[h->qp],
- h->cv,h->c_stride);
-}
-
-static inline int decode_residual_inter(AVSContext *h) {
- int block;
-
- /* get coded block pattern */
- int cbp= get_ue_golomb(&h->s.gb);
- if(cbp > 63){
- av_log(h->s.avctx, AV_LOG_ERROR, "illegal inter cbp\n");
- return -1;
- }
- h->cbp = cbp_tab[cbp][1];
-
- /* get quantizer */
- if(h->cbp && !h->qp_fixed)
- h->qp += get_se_golomb(&h->s.gb);
- for(block=0;block<4;block++)
- if(h->cbp & (1<<block))
- decode_residual_block(h,&h->s.gb,inter_2dvlc,0,h->qp,
- h->cy + h->luma_scan[block], h->l_stride);
- decode_residual_chroma(h);
-
- return 0;
-}
-
/*****************************************************************************
*
* macroblock level
/**
* initialise predictors for motion vectors and intra prediction
*/
-static inline void init_mb(AVSContext *h) {
+void ff_cavs_init_mb(AVSContext *h) {
int i;
/* copy predictors from top line (MB B and C) into cache */
h->pred_mode_Y[2] = h->top_pred_Y[h->mbx*2+1];
/* clear top predictors if MB B is not available */
if(!(h->flags & B_AVAIL)) {
- h->mv[MV_FWD_B2] = un_mv;
- h->mv[MV_FWD_B3] = un_mv;
- h->mv[MV_BWD_B2] = un_mv;
- h->mv[MV_BWD_B3] = un_mv;
+ h->mv[MV_FWD_B2] = ff_cavs_un_mv;
+ h->mv[MV_FWD_B3] = ff_cavs_un_mv;
+ h->mv[MV_BWD_B2] = ff_cavs_un_mv;
+ h->mv[MV_BWD_B3] = ff_cavs_un_mv;
h->pred_mode_Y[1] = h->pred_mode_Y[2] = NOT_AVAIL;
h->flags &= ~(C_AVAIL|D_AVAIL);
} else if(h->mbx) {
h->flags &= ~C_AVAIL;
/* clear top-right predictors if MB C is not available */
if(!(h->flags & C_AVAIL)) {
- h->mv[MV_FWD_C2] = un_mv;
- h->mv[MV_BWD_C2] = un_mv;
+ h->mv[MV_FWD_C2] = ff_cavs_un_mv;
+ h->mv[MV_BWD_C2] = ff_cavs_un_mv;
}
/* clear top-left predictors if MB D is not available */
if(!(h->flags & D_AVAIL)) {
- h->mv[MV_FWD_D3] = un_mv;
- h->mv[MV_BWD_D3] = un_mv;
+ h->mv[MV_FWD_D3] = ff_cavs_un_mv;
+ h->mv[MV_BWD_D3] = ff_cavs_un_mv;
}
- /* set pointer for co-located macroblock type */
- h->col_type = &h->col_type_base[h->mby*h->mb_width + h->mbx];
}
-static inline void check_for_slice(AVSContext *h);
-
/**
* save predictors for later macroblocks and increase
* macroblock address
* @returns 0 if end of frame is reached, 1 otherwise
*/
-static inline int next_mb(AVSContext *h) {
+int ff_cavs_next_mb(AVSContext *h) {
int i;
h->flags |= A_AVAIL;
h->top_mv[1][h->mbx*2+0] = h->mv[MV_BWD_X2];
h->top_mv[1][h->mbx*2+1] = h->mv[MV_BWD_X3];
/* next MB address */
+ h->mbidx++;
h->mbx++;
if(h->mbx == h->mb_width) { //new mb line
h->flags = B_AVAIL|C_AVAIL;
h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
/* clear left mv predictors */
for(i=0;i<=20;i+=4)
- h->mv[i] = un_mv;
+ h->mv[i] = ff_cavs_un_mv;
h->mbx = 0;
h->mby++;
/* re-calculate sample pointers */
h->cv = h->picture.data[2] + h->mby*8*h->c_stride;
if(h->mby == h->mb_height) { //frame end
return 0;
- } else {
- //check_for_slice(h);
}
}
return 1;
}
-static int decode_mb_i(AVSContext *h, int cbp_code) {
- GetBitContext *gb = &h->s.gb;
- int block, pred_mode_uv;
- uint8_t top[18];
- uint8_t left[18];
- uint8_t *d;
-
- init_mb(h);
-
- /* get intra prediction modes from stream */
- for(block=0;block<4;block++) {
- int nA,nB,predpred;
- int pos = scan3x3[block];
-
- nA = h->pred_mode_Y[pos-1];
- nB = h->pred_mode_Y[pos-3];
- predpred = FFMIN(nA,nB);
- if(predpred == NOT_AVAIL) // if either is not available
- predpred = INTRA_L_LP;
- if(!get_bits1(gb)){
- int rem_mode= get_bits(gb, 2);
- predpred = rem_mode + (rem_mode >= predpred);
- }
- h->pred_mode_Y[pos] = predpred;
- }
- pred_mode_uv = get_ue_golomb(gb);
- if(pred_mode_uv > 6) {
- av_log(h->s.avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n");
- return -1;
- }
-
- /* save pred modes before they get modified */
- h->pred_mode_Y[3] = h->pred_mode_Y[5];
- h->pred_mode_Y[6] = h->pred_mode_Y[8];
- h->top_pred_Y[h->mbx*2+0] = h->pred_mode_Y[7];
- h->top_pred_Y[h->mbx*2+1] = h->pred_mode_Y[8];
-
- /* modify pred modes according to availability of neighbour samples */
- if(!(h->flags & A_AVAIL)) {
- modify_pred(left_modifier_l, &h->pred_mode_Y[4] );
- modify_pred(left_modifier_l, &h->pred_mode_Y[7] );
- modify_pred(left_modifier_c, &pred_mode_uv );
- }
- if(!(h->flags & B_AVAIL)) {
- modify_pred(top_modifier_l, &h->pred_mode_Y[4] );
- modify_pred(top_modifier_l, &h->pred_mode_Y[5] );
- modify_pred(top_modifier_c, &pred_mode_uv );
- }
-
- /* get coded block pattern */
- if(h->pic_type == FF_I_TYPE)
- cbp_code = get_ue_golomb(gb);
- if(cbp_code > 63){
- av_log(h->s.avctx, AV_LOG_ERROR, "illegal intra cbp\n");
- return -1;
- }
- h->cbp = cbp_tab[cbp_code][0];
- if(h->cbp && !h->qp_fixed)
- h->qp += get_se_golomb(gb); //qp_delta
-
- /* luma intra prediction interleaved with residual decode/transform/add */
- for(block=0;block<4;block++) {
- d = h->cy + h->luma_scan[block];
- load_intra_pred_luma(h, top, left, block);
- h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]]
- (d, top, left, h->l_stride);
- if(h->cbp & (1<<block))
- decode_residual_block(h,gb,intra_2dvlc,1,h->qp,d,h->l_stride);
- }
-
- /* chroma intra prediction */
- /* extend borders by one pixel */
- h->left_border_u[9] = h->left_border_u[8];
- h->left_border_v[9] = h->left_border_v[8];
- h->top_border_u[h->mbx*10+9] = h->top_border_u[h->mbx*10+8];
- h->top_border_v[h->mbx*10+9] = h->top_border_v[h->mbx*10+8];
- if(h->mbx && h->mby) {
- h->top_border_u[h->mbx*10] = h->left_border_u[0] = h->topleft_border_u;
- h->top_border_v[h->mbx*10] = h->left_border_v[0] = h->topleft_border_v;
- } else {
- h->left_border_u[0] = h->left_border_u[1];
- h->left_border_v[0] = h->left_border_v[1];
- h->top_border_u[h->mbx*10] = h->top_border_u[h->mbx*10+1];
- h->top_border_v[h->mbx*10] = h->top_border_v[h->mbx*10+1];
- }
- h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx*10],
- h->left_border_u, h->c_stride);
- h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx*10],
- h->left_border_v, h->c_stride);
-
- decode_residual_chroma(h);
- filter_mb(h,I_8X8);
-
- /* mark motion vectors as intra */
- h->mv[MV_FWD_X0] = intra_mv;
- set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
- h->mv[MV_BWD_X0] = intra_mv;
- set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
- if(h->pic_type != FF_B_TYPE)
- *h->col_type = I_8X8;
-
- return 0;
-}
-
-static void decode_mb_p(AVSContext *h, enum mb_t mb_type) {
- GetBitContext *gb = &h->s.gb;
- int ref[4];
-
- init_mb(h);
- switch(mb_type) {
- case P_SKIP:
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_PSKIP, BLK_16X16, 0);
- break;
- case P_16X16:
- ref[0] = h->ref_flag ? 0 : get_bits1(gb);
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16,ref[0]);
- break;
- case P_16X8:
- ref[0] = h->ref_flag ? 0 : get_bits1(gb);
- ref[2] = h->ref_flag ? 0 : get_bits1(gb);
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, ref[0]);
- mv_pred(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, ref[2]);
- break;
- case P_8X16:
- ref[0] = h->ref_flag ? 0 : get_bits1(gb);
- ref[1] = h->ref_flag ? 0 : get_bits1(gb);
- mv_pred(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, ref[0]);
- mv_pred(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT, BLK_8X16, ref[1]);
- break;
- case P_8X8:
- ref[0] = h->ref_flag ? 0 : get_bits1(gb);
- ref[1] = h->ref_flag ? 0 : get_bits1(gb);
- ref[2] = h->ref_flag ? 0 : get_bits1(gb);
- ref[3] = h->ref_flag ? 0 : get_bits1(gb);
- mv_pred(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_MEDIAN, BLK_8X8, ref[0]);
- mv_pred(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_MEDIAN, BLK_8X8, ref[1]);
- mv_pred(h, MV_FWD_X2, MV_FWD_X1, MV_PRED_MEDIAN, BLK_8X8, ref[2]);
- mv_pred(h, MV_FWD_X3, MV_FWD_X0, MV_PRED_MEDIAN, BLK_8X8, ref[3]);
- }
- inter_pred(h, mb_type);
- store_mvs(h);
- if(mb_type != P_SKIP)
- decode_residual_inter(h);
- filter_mb(h,mb_type);
- *h->col_type = mb_type;
-}
-
-static void decode_mb_b(AVSContext *h, enum mb_t mb_type) {
- int block;
- enum sub_mb_t sub_type[4];
- int flags;
-
- init_mb(h);
-
- /* reset all MVs */
- h->mv[MV_FWD_X0] = dir_mv;
- set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
- h->mv[MV_BWD_X0] = dir_mv;
- set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
- switch(mb_type) {
- case B_SKIP:
- case B_DIRECT:
- if(!(*h->col_type)) {
- /* intra MB at co-location, do in-plane prediction */
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_BSKIP, BLK_16X16, 1);
- mv_pred(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_BSKIP, BLK_16X16, 0);
- } else
- /* direct prediction from co-located P MB, block-wise */
- for(block=0;block<4;block++)
- mv_pred_direct(h,&h->mv[mv_scan[block]],
- &h->col_mv[(h->mby*h->mb_width+h->mbx)*4 + block]);
- break;
- case B_FWD_16X16:
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1);
- break;
- case B_SYM_16X16:
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_MEDIAN, BLK_16X16, 1);
- mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X16);
- break;
- case B_BWD_16X16:
- mv_pred(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_MEDIAN, BLK_16X16, 0);
- break;
- case B_8X8:
- for(block=0;block<4;block++)
- sub_type[block] = get_bits(&h->s.gb,2);
- for(block=0;block<4;block++) {
- switch(sub_type[block]) {
- case B_SUB_DIRECT:
- if(!(*h->col_type)) {
- /* intra MB at co-location, do in-plane prediction */
- mv_pred(h, mv_scan[block], mv_scan[block]-3,
- MV_PRED_BSKIP, BLK_8X8, 1);
- mv_pred(h, mv_scan[block]+MV_BWD_OFFS,
- mv_scan[block]-3+MV_BWD_OFFS,
- MV_PRED_BSKIP, BLK_8X8, 0);
- } else
- mv_pred_direct(h,&h->mv[mv_scan[block]],
- &h->col_mv[(h->mby*h->mb_width + h->mbx)*4 + block]);
- break;
- case B_SUB_FWD:
- mv_pred(h, mv_scan[block], mv_scan[block]-3,
- MV_PRED_MEDIAN, BLK_8X8, 1);
- break;
- case B_SUB_SYM:
- mv_pred(h, mv_scan[block], mv_scan[block]-3,
- MV_PRED_MEDIAN, BLK_8X8, 1);
- mv_pred_sym(h, &h->mv[mv_scan[block]], BLK_8X8);
- break;
- }
- }
- for(block=0;block<4;block++) {
- if(sub_type[block] == B_SUB_BWD)
- mv_pred(h, mv_scan[block]+MV_BWD_OFFS,
- mv_scan[block]+MV_BWD_OFFS-3,
- MV_PRED_MEDIAN, BLK_8X8, 0);
- }
- break;
- default:
- assert((mb_type > B_SYM_16X16) && (mb_type < B_8X8));
- flags = partition_flags[mb_type];
- if(mb_type & 1) { /* 16x8 macroblock types */
- if(flags & FWD0)
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1);
- if(flags & SYM0) {
- mv_pred(h, MV_FWD_X0, MV_FWD_C2, MV_PRED_TOP, BLK_16X8, 1);
- mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_16X8);
- }
- if(flags & FWD1)
- mv_pred(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1);
- if(flags & SYM1) {
- mv_pred(h, MV_FWD_X2, MV_FWD_A1, MV_PRED_LEFT, BLK_16X8, 1);
- mv_pred_sym(h, &h->mv[9], BLK_16X8);
- }
- if(flags & BWD0)
- mv_pred(h, MV_BWD_X0, MV_BWD_C2, MV_PRED_TOP, BLK_16X8, 0);
- if(flags & BWD1)
- mv_pred(h, MV_BWD_X2, MV_BWD_A1, MV_PRED_LEFT, BLK_16X8, 0);
- } else { /* 8x16 macroblock types */
- if(flags & FWD0)
- mv_pred(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1);
- if(flags & SYM0) {
- mv_pred(h, MV_FWD_X0, MV_FWD_B3, MV_PRED_LEFT, BLK_8X16, 1);
- mv_pred_sym(h, &h->mv[MV_FWD_X0], BLK_8X16);
- }
- if(flags & FWD1)
- mv_pred(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT,BLK_8X16, 1);
- if(flags & SYM1) {
- mv_pred(h, MV_FWD_X1, MV_FWD_C2, MV_PRED_TOPRIGHT,BLK_8X16, 1);
- mv_pred_sym(h, &h->mv[6], BLK_8X16);
- }
- if(flags & BWD0)
- mv_pred(h, MV_BWD_X0, MV_BWD_B3, MV_PRED_LEFT, BLK_8X16, 0);
- if(flags & BWD1)
- mv_pred(h, MV_BWD_X1, MV_BWD_C2, MV_PRED_TOPRIGHT,BLK_8X16, 0);
- }
- }
- inter_pred(h, mb_type);
- if(mb_type != B_SKIP)
- decode_residual_inter(h);
- filter_mb(h,mb_type);
-}
-
-/*****************************************************************************
- *
- * slice level
- *
- ****************************************************************************/
-
-static inline int decode_slice_header(AVSContext *h, GetBitContext *gb) {
- if(h->stc > 0xAF)
- av_log(h->s.avctx, AV_LOG_ERROR, "unexpected start code 0x%02x\n", h->stc);
- h->mby = h->stc;
- if((h->mby == 0) && (!h->qp_fixed)){
- h->qp_fixed = get_bits1(gb);
- h->qp = get_bits(gb,6);
- }
- /* inter frame or second slice can have weighting params */
- if((h->pic_type != FF_I_TYPE) || (!h->pic_structure && h->mby >= h->mb_width/2))
- if(get_bits1(gb)) { //slice_weighting_flag
- av_log(h->s.avctx, AV_LOG_ERROR,
- "weighted prediction not yet supported\n");
- }
- return 0;
-}
-
-static inline void check_for_slice(AVSContext *h) {
- GetBitContext *gb = &h->s.gb;
- int align;
- align = (-get_bits_count(gb)) & 7;
- if((show_bits_long(gb,24+align) & 0xFFFFFF) == 0x000001) {
- get_bits_long(gb,24+align);
- h->stc = get_bits(gb,8);
- decode_slice_header(h,gb);
- }
-}
-
/*****************************************************************************
*
* frame level
*
****************************************************************************/
-static void init_pic(AVSContext *h) {
+void ff_cavs_init_pic(AVSContext *h) {
int i;
/* clear some predictors */
for(i=0;i<=20;i+=4)
- h->mv[i] = un_mv;
- h->mv[MV_BWD_X0] = dir_mv;
+ h->mv[i] = ff_cavs_un_mv;
+ h->mv[MV_BWD_X0] = ff_cavs_dir_mv;
set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
- h->mv[MV_FWD_X0] = dir_mv;
+ h->mv[MV_FWD_X0] = ff_cavs_dir_mv;
set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
h->pred_mode_Y[3] = h->pred_mode_Y[6] = NOT_AVAIL;
h->cy = h->picture.data[0];
h->c_stride = h->picture.linesize[1];
h->luma_scan[2] = 8*h->l_stride;
h->luma_scan[3] = 8*h->l_stride+8;
- h->mbx = h->mby = 0;
+ h->mbx = h->mby = h->mbidx = 0;
h->flags = 0;
}
-static int decode_pic(AVSContext *h) {
- MpegEncContext *s = &h->s;
- int skip_count;
- enum mb_t mb_type;
-
- if (!s->context_initialized) {
- if (MPV_common_init(s) < 0)
- return -1;
- }
- get_bits(&s->gb,16);//bbv_dwlay
- if(h->stc == PIC_PB_START_CODE) {
- h->pic_type = get_bits(&s->gb,2) + FF_I_TYPE;
- /* make sure we have the reference frames we need */
- if(!h->DPB[0].data[0] ||
- (!h->DPB[1].data[0] && h->pic_type == FF_B_TYPE))
- return -1;
- } else {
- h->pic_type = FF_I_TYPE;
- if(get_bits1(&s->gb))
- get_bits(&s->gb,16);//time_code
- }
- /* release last B frame */
- if(h->picture.data[0])
- s->avctx->release_buffer(s->avctx, (AVFrame *)&h->picture);
-
- s->avctx->get_buffer(s->avctx, (AVFrame *)&h->picture);
- init_pic(h);
- h->picture.poc = get_bits(&s->gb,8)*2;
-
- /* get temporal distances and MV scaling factors */
- if(h->pic_type != FF_B_TYPE) {
- h->dist[0] = (h->picture.poc - h->DPB[0].poc + 512) % 512;
- } else {
- h->dist[0] = (h->DPB[0].poc - h->picture.poc + 512) % 512;
- }
- h->dist[1] = (h->picture.poc - h->DPB[1].poc + 512) % 512;
- h->scale_den[0] = h->dist[0] ? 512/h->dist[0] : 0;
- h->scale_den[1] = h->dist[1] ? 512/h->dist[1] : 0;
- if(h->pic_type == FF_B_TYPE) {
- h->sym_factor = h->dist[0]*h->scale_den[1];
- } else {
- h->direct_den[0] = h->dist[0] ? 16384/h->dist[0] : 0;
- h->direct_den[1] = h->dist[1] ? 16384/h->dist[1] : 0;
- }
-
- if(s->low_delay)
- get_ue_golomb(&s->gb); //bbv_check_times
- h->progressive = get_bits1(&s->gb);
- if(h->progressive)
- h->pic_structure = 1;
- else if(!(h->pic_structure = get_bits1(&s->gb) && (h->stc == PIC_PB_START_CODE)) )
- get_bits1(&s->gb); //advanced_pred_mode_disable
- skip_bits1(&s->gb); //top_field_first
- skip_bits1(&s->gb); //repeat_first_field
- h->qp_fixed = get_bits1(&s->gb);
- h->qp = get_bits(&s->gb,6);
- if(h->pic_type == FF_I_TYPE) {
- if(!h->progressive && !h->pic_structure)
- skip_bits1(&s->gb);//what is this?
- skip_bits(&s->gb,4); //reserved bits
- } else {
- if(!(h->pic_type == FF_B_TYPE && h->pic_structure == 1))
- h->ref_flag = get_bits1(&s->gb);
- skip_bits(&s->gb,4); //reserved bits
- h->skip_mode_flag = get_bits1(&s->gb);
- }
- h->loop_filter_disable = get_bits1(&s->gb);
- if(!h->loop_filter_disable && get_bits1(&s->gb)) {
- h->alpha_offset = get_se_golomb(&s->gb);
- h->beta_offset = get_se_golomb(&s->gb);
- } else {
- h->alpha_offset = h->beta_offset = 0;
- }
- check_for_slice(h);
- if(h->pic_type == FF_I_TYPE) {
- do {
- decode_mb_i(h, 0);
- } while(next_mb(h));
- } else if(h->pic_type == FF_P_TYPE) {
- do {
- if(h->skip_mode_flag) {
- skip_count = get_ue_golomb(&s->gb);
- while(skip_count--) {
- decode_mb_p(h,P_SKIP);
- if(!next_mb(h))
- goto done;
- }
- mb_type = get_ue_golomb(&s->gb) + P_16X16;
- } else
- mb_type = get_ue_golomb(&s->gb) + P_SKIP;
- if(mb_type > P_8X8) {
- decode_mb_i(h, mb_type - P_8X8 - 1);
- } else
- decode_mb_p(h,mb_type);
- } while(next_mb(h));
- } else { /* FF_B_TYPE */
- do {
- if(h->skip_mode_flag) {
- skip_count = get_ue_golomb(&s->gb);
- while(skip_count--) {
- decode_mb_b(h,B_SKIP);
- if(!next_mb(h))
- goto done;
- }
- mb_type = get_ue_golomb(&s->gb) + B_DIRECT;
- } else
- mb_type = get_ue_golomb(&s->gb) + B_SKIP;
- if(mb_type > B_8X8) {
- decode_mb_i(h, mb_type - B_8X8 - 1);
- } else
- decode_mb_b(h,mb_type);
- } while(next_mb(h));
- }
- done:
- if(h->pic_type != FF_B_TYPE) {
- if(h->DPB[1].data[0])
- s->avctx->release_buffer(s->avctx, (AVFrame *)&h->DPB[1]);
- memcpy(&h->DPB[1], &h->DPB[0], sizeof(Picture));
- memcpy(&h->DPB[0], &h->picture, sizeof(Picture));
- memset(&h->picture,0,sizeof(Picture));
- }
- return 0;
-}
-
/*****************************************************************************
*
* headers and interface
* this data has to be stored for one complete row of macroblocks
* and this storage space is allocated here
*/
-static void init_top_lines(AVSContext *h) {
+void ff_cavs_init_top_lines(AVSContext *h) {
/* alloc top line of predictors */
h->top_qp = av_malloc( h->mb_width);
- h->top_mv[0] = av_malloc((h->mb_width*2+1)*sizeof(vector_t));
- h->top_mv[1] = av_malloc((h->mb_width*2+1)*sizeof(vector_t));
+ h->top_mv[0] = av_malloc((h->mb_width*2+1)*sizeof(cavs_vector));
+ h->top_mv[1] = av_malloc((h->mb_width*2+1)*sizeof(cavs_vector));
h->top_pred_Y = av_malloc( h->mb_width*2*sizeof(*h->top_pred_Y));
h->top_border_y = av_malloc((h->mb_width+1)*16);
h->top_border_u = av_malloc((h->mb_width)*10);
h->top_border_v = av_malloc((h->mb_width)*10);
/* alloc space for co-located MVs and types */
- h->col_mv = av_malloc( h->mb_width*h->mb_height*4*sizeof(vector_t));
+ h->col_mv = av_malloc( h->mb_width*h->mb_height*4*sizeof(cavs_vector));
h->col_type_base = av_malloc(h->mb_width*h->mb_height);
+ h->block = av_mallocz(64*sizeof(DCTELEM));
}
-static int decode_seq_header(AVSContext *h) {
- MpegEncContext *s = &h->s;
- extern const AVRational ff_frame_rate_tab[];
- int frame_rate_code;
-
- h->profile = get_bits(&s->gb,8);
- h->level = get_bits(&s->gb,8);
- skip_bits1(&s->gb); //progressive sequence
- s->width = get_bits(&s->gb,14);
- s->height = get_bits(&s->gb,14);
- skip_bits(&s->gb,2); //chroma format
- skip_bits(&s->gb,3); //sample_precision
- h->aspect_ratio = get_bits(&s->gb,4);
- frame_rate_code = get_bits(&s->gb,4);
- skip_bits(&s->gb,18);//bit_rate_lower
- skip_bits1(&s->gb); //marker_bit
- skip_bits(&s->gb,12);//bit_rate_upper
- s->low_delay = get_bits1(&s->gb);
- h->mb_width = (s->width + 15) >> 4;
- h->mb_height = (s->height + 15) >> 4;
- h->s.avctx->time_base.den = ff_frame_rate_tab[frame_rate_code].num;
- h->s.avctx->time_base.num = ff_frame_rate_tab[frame_rate_code].den;
- h->s.avctx->width = s->width;
- h->s.avctx->height = s->height;
- if(!h->top_qp)
- init_top_lines(h);
- return 0;
-}
-
-/**
- * finds the end of the current frame in the bitstream.
- * @return the position of the first byte of the next frame, or -1
- */
-int ff_cavs_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size) {
- int pic_found, i;
- uint32_t state;
-
- pic_found= pc->frame_start_found;
- state= pc->state;
-
- i=0;
- if(!pic_found){
- for(i=0; i<buf_size; i++){
- state= (state<<8) | buf[i];
- if(state == PIC_I_START_CODE || state == PIC_PB_START_CODE){
- i++;
- pic_found=1;
- break;
- }
- }
- }
-
- if(pic_found){
- /* EOF considered as end of frame */
- if (buf_size == 0)
- return 0;
- for(; i<buf_size; i++){
- state= (state<<8) | buf[i];
- if((state&0xFFFFFF00) == 0x100){
- if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){
- pc->frame_start_found=0;
- pc->state=-1;
- return i-3;
- }
- }
- }
- }
- pc->frame_start_found= pic_found;
- pc->state= state;
- return END_NOT_FOUND;
-}
-
-void ff_cavs_flush(AVCodecContext * avctx) {
- AVSContext *h = avctx->priv_data;
- h->got_keyframe = 0;
-}
-
-static int cavs_decode_frame(AVCodecContext * avctx,void *data, int *data_size,
- uint8_t * buf, int buf_size) {
- AVSContext *h = avctx->priv_data;
- MpegEncContext *s = &h->s;
- int input_size;
- const uint8_t *buf_end;
- const uint8_t *buf_ptr;
- AVFrame *picture = data;
- uint32_t stc;
-
- s->avctx = avctx;
-
- if (buf_size == 0) {
- if(!s->low_delay && h->DPB[0].data[0]) {
- *data_size = sizeof(AVPicture);
- *picture = *(AVFrame *) &h->DPB[0];
- }
- return 0;
- }
-
- buf_ptr = buf;
- buf_end = buf + buf_size;
- for(;;) {
- buf_ptr = ff_find_start_code(buf_ptr,buf_end, &stc);
- if(stc & 0xFFFFFE00)
- return FFMAX(0, buf_ptr - buf - s->parse_context.last_index);
- input_size = (buf_end - buf_ptr)*8;
- switch(stc) {
- case SEQ_START_CODE:
- init_get_bits(&s->gb, buf_ptr, input_size);
- decode_seq_header(h);
- break;
- case PIC_I_START_CODE:
- if(!h->got_keyframe) {
- if(h->DPB[0].data[0])
- avctx->release_buffer(avctx, (AVFrame *)&h->DPB[0]);
- if(h->DPB[1].data[0])
- avctx->release_buffer(avctx, (AVFrame *)&h->DPB[1]);
- h->got_keyframe = 1;
- }
- case PIC_PB_START_CODE:
- *data_size = 0;
- if(!h->got_keyframe)
- break;
- init_get_bits(&s->gb, buf_ptr, input_size);
- h->stc = stc;
- if(decode_pic(h))
- break;
- *data_size = sizeof(AVPicture);
- if(h->pic_type != FF_B_TYPE) {
- if(h->DPB[1].data[0]) {
- *picture = *(AVFrame *) &h->DPB[1];
- } else {
- *data_size = 0;
- }
- } else
- *picture = *(AVFrame *) &h->picture;
- break;
- case EXT_START_CODE:
- //mpeg_decode_extension(avctx,buf_ptr, input_size);
- break;
- case USER_START_CODE:
- //mpeg_decode_user_data(avctx,buf_ptr, input_size);
- break;
- default:
- if (stc >= SLICE_MIN_START_CODE &&
- stc <= SLICE_MAX_START_CODE) {
- init_get_bits(&s->gb, buf_ptr, input_size);
- decode_slice_header(h, &s->gb);
- }
- break;
- }
- }
-}
-
-static int cavs_decode_init(AVCodecContext * avctx) {
+av_cold int ff_cavs_init(AVCodecContext *avctx) {
AVSContext *h = avctx->priv_data;
MpegEncContext * const s = &h->s;
h->intra_pred_c[ INTRA_C_LP_LEFT] = intra_pred_lp_left;
h->intra_pred_c[ INTRA_C_LP_TOP] = intra_pred_lp_top;
h->intra_pred_c[ INTRA_C_DC_128] = intra_pred_dc_128;
- h->mv[ 7] = un_mv;
- h->mv[19] = un_mv;
+ h->mv[ 7] = ff_cavs_un_mv;
+ h->mv[19] = ff_cavs_un_mv;
return 0;
}
-static int cavs_decode_end(AVCodecContext * avctx) {
+av_cold int ff_cavs_end(AVCodecContext *avctx) {
AVSContext *h = avctx->priv_data;
av_free(h->top_qp);
av_free(h->top_border_v);
av_free(h->col_mv);
av_free(h->col_type_base);
+ av_free(h->block);
return 0;
}
-
-AVCodec cavs_decoder = {
- "cavs",
- CODEC_TYPE_VIDEO,
- CODEC_ID_CAVS,
- sizeof(AVSContext),
- cavs_decode_init,
- NULL,
- cavs_decode_end,
- cavs_decode_frame,
- CODEC_CAP_DR1 | CODEC_CAP_DELAY,
- .flush= ff_cavs_flush,
-};
projects / frescor / ffmpeg.git / blobdiff