+++ /dev/null
-/*
- * Copyright (c) 2002 The FFmpeg Project.
- *
- * This library 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.
- *
- * This library 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-/**
- * @file wmv2.c
- * wmv2 codec.
- */
-
-#include "simple_idct.h"
-
-#define SKIP_TYPE_NONE 0
-#define SKIP_TYPE_MPEG 1
-#define SKIP_TYPE_ROW 2
-#define SKIP_TYPE_COL 3
-
-
-typedef struct Wmv2Context{
- MpegEncContext s;
- int j_type_bit;
- int j_type;
- int flag3;
- int flag63;
- int abt_flag;
- int abt_type;
- int abt_type_table[6];
- int per_mb_abt;
- int per_block_abt;
- int mspel_bit;
- int cbp_table_index;
- int top_left_mv_flag;
- int per_mb_rl_bit;
- int skip_type;
- int hshift;
-
- ScanTable abt_scantable[2];
- DCTELEM abt_block2[6][64] __align8;
-}Wmv2Context;
-
-static void wmv2_common_init(Wmv2Context * w){
- MpegEncContext * const s= &w->s;
-
- ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[0], wmv2_scantableA);
- ff_init_scantable(s->dsp.idct_permutation, &w->abt_scantable[1], wmv2_scantableB);
-}
-
-static int encode_ext_header(Wmv2Context *w){
- MpegEncContext * const s= &w->s;
- PutBitContext pb;
- int code;
-
- init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size, NULL, NULL);
-
- put_bits(&pb, 5, s->avctx->frame_rate / s->avctx->frame_rate_base); //yes 29.97 -> 29
- put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
-
- put_bits(&pb, 1, w->mspel_bit=1);
- put_bits(&pb, 1, w->flag3=1);
- put_bits(&pb, 1, w->abt_flag=1);
- put_bits(&pb, 1, w->j_type_bit=1);
- put_bits(&pb, 1, w->top_left_mv_flag=0);
- put_bits(&pb, 1, w->per_mb_rl_bit=1);
- put_bits(&pb, 3, code=1);
-
- flush_put_bits(&pb);
-
- s->slice_height = s->mb_height / code;
-
- return 0;
-}
-
-#ifdef CONFIG_ENCODERS
-static int wmv2_encode_init(AVCodecContext *avctx){
- Wmv2Context * const w= avctx->priv_data;
-
- if(MPV_encode_init(avctx) < 0)
- return -1;
-
- wmv2_common_init(w);
-
- avctx->extradata_size= 4;
- avctx->extradata= av_mallocz(avctx->extradata_size + 10);
- encode_ext_header(w);
-
- return 0;
-}
-
-static int wmv2_encode_end(AVCodecContext *avctx){
-
- if(MPV_encode_end(avctx) < 0)
- return -1;
-
- avctx->extradata_size= 0;
- av_freep(&avctx->extradata);
-
- return 0;
-}
-
-int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
-{
- Wmv2Context * const w= (Wmv2Context*)s;
-
- put_bits(&s->pb, 1, s->pict_type - 1);
- if(s->pict_type == I_TYPE){
- put_bits(&s->pb, 7, 0);
- }
- put_bits(&s->pb, 5, s->qscale);
-
- s->dc_table_index = 1;
- s->mv_table_index = 1; /* only if P frame */
-// s->use_skip_mb_code = 1; /* only if P frame */
- s->per_mb_rl_table = 0;
- s->mspel= 0;
- w->per_mb_abt=0;
- w->abt_type=0;
- w->j_type=0;
-
- assert(s->flipflop_rounding);
-
- if (s->pict_type == I_TYPE) {
- assert(s->no_rounding==1);
- if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
-
- if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
-
- if(!s->per_mb_rl_table){
- code012(&s->pb, s->rl_chroma_table_index);
- code012(&s->pb, s->rl_table_index);
- }
-
- put_bits(&s->pb, 1, s->dc_table_index);
-
- s->inter_intra_pred= 0;
- }else{
- int cbp_index;
-
- put_bits(&s->pb, 2, SKIP_TYPE_NONE);
-
- code012(&s->pb, cbp_index=0);
- if(s->qscale <= 10){
- int map[3]= {0,2,1};
- w->cbp_table_index= map[cbp_index];
- }else if(s->qscale <= 20){
- int map[3]= {1,0,2};
- w->cbp_table_index= map[cbp_index];
- }else{
- int map[3]= {2,1,0};
- w->cbp_table_index= map[cbp_index];
- }
-
- if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
-
- if(w->abt_flag){
- put_bits(&s->pb, 1, w->per_mb_abt^1);
- if(!w->per_mb_abt){
- code012(&s->pb, w->abt_type);
- }
- }
-
- if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
-
- if(!s->per_mb_rl_table){
- code012(&s->pb, s->rl_table_index);
- s->rl_chroma_table_index = s->rl_table_index;
- }
- put_bits(&s->pb, 1, s->dc_table_index);
- put_bits(&s->pb, 1, s->mv_table_index);
-
- s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
- }
- s->esc3_level_length= 0;
- s->esc3_run_length= 0;
-
- return 0;
-}
-
-// nearly idential to wmv1 but thats just because we dont use the useless M$ crap features
-// its duplicated here in case someone wants to add support for these carp features
-void ff_wmv2_encode_mb(MpegEncContext * s,
- DCTELEM block[6][64],
- int motion_x, int motion_y)
-{
- Wmv2Context * const w= (Wmv2Context*)s;
- int cbp, coded_cbp, i;
- int pred_x, pred_y;
- uint8_t *coded_block;
-
- handle_slices(s);
-
- if (!s->mb_intra) {
- /* compute cbp */
- set_stat(ST_INTER_MB);
- cbp = 0;
- for (i = 0; i < 6; i++) {
- if (s->block_last_index[i] >= 0)
- cbp |= 1 << (5 - i);
- }
-
- put_bits(&s->pb,
- wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
- wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
-
- /* motion vector */
- h263_pred_motion(s, 0, &pred_x, &pred_y);
- msmpeg4_encode_motion(s, motion_x - pred_x,
- motion_y - pred_y);
- } else {
- /* compute cbp */
- cbp = 0;
- coded_cbp = 0;
- for (i = 0; i < 6; i++) {
- int val, pred;
- val = (s->block_last_index[i] >= 1);
- cbp |= val << (5 - i);
- if (i < 4) {
- /* predict value for close blocks only for luma */
- pred = coded_block_pred(s, i, &coded_block);
- *coded_block = val;
- val = val ^ pred;
- }
- coded_cbp |= val << (5 - i);
- }
-#if 0
- if (coded_cbp)
- printf("cbp=%x %x\n", cbp, coded_cbp);
-#endif
-
- if (s->pict_type == I_TYPE) {
- set_stat(ST_INTRA_MB);
- put_bits(&s->pb,
- table_mb_intra[coded_cbp][1], table_mb_intra[coded_cbp][0]);
- } else {
- put_bits(&s->pb,
- wmv2_inter_table[w->cbp_table_index][cbp][1],
- wmv2_inter_table[w->cbp_table_index][cbp][0]);
- }
- set_stat(ST_INTRA_MB);
- put_bits(&s->pb, 1, 0); /* no AC prediction yet */
- if(s->inter_intra_pred){
- s->h263_aic_dir=0;
- put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
- }
- }
-
- for (i = 0; i < 6; i++) {
- msmpeg4_encode_block(s, block[i], i);
- }
-}
-#endif //CONFIG_ENCODERS
-
-static void parse_mb_skip(Wmv2Context * w){
- int mb_x, mb_y;
- MpegEncContext * const s= &w->s;
- uint32_t * const mb_type= s->current_picture_ptr->mb_type;
-
- w->skip_type= get_bits(&s->gb, 2);
- switch(w->skip_type){
- case SKIP_TYPE_NONE:
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_16x16 | MB_TYPE_L0;
- }
- }
- break;
- case SKIP_TYPE_MPEG:
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
- }
- }
- break;
- case SKIP_TYPE_ROW:
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- if(get_bits1(&s->gb)){
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
- }
- }else{
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
- }
- }
- }
- break;
- case SKIP_TYPE_COL:
- for(mb_x=0; mb_x<s->mb_width; mb_x++){
- if(get_bits1(&s->gb)){
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- mb_type[mb_y*s->mb_stride + mb_x]= MB_TYPE_SKIP | MB_TYPE_16x16 | MB_TYPE_L0;
- }
- }else{
- for(mb_y=0; mb_y<s->mb_height; mb_y++){
- mb_type[mb_y*s->mb_stride + mb_x]= (get_bits1(&s->gb) ? MB_TYPE_SKIP : 0) | MB_TYPE_16x16 | MB_TYPE_L0;
- }
- }
- }
- break;
- }
-}
-
-static int decode_ext_header(Wmv2Context *w){
- MpegEncContext * const s= &w->s;
- GetBitContext gb;
- int fps;
- int code;
-
- if(s->avctx->extradata_size<4) return -1;
-
- init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
-
- fps = get_bits(&gb, 5);
- s->bit_rate = get_bits(&gb, 11)*1024;
- w->mspel_bit = get_bits1(&gb);
- w->flag3 = get_bits1(&gb);
- w->abt_flag = get_bits1(&gb);
- w->j_type_bit = get_bits1(&gb);
- w->top_left_mv_flag= get_bits1(&gb);
- w->per_mb_rl_bit = get_bits1(&gb);
- code = get_bits(&gb, 3);
-
- if(code==0) return -1;
-
- s->slice_height = s->mb_height / code;
-
- if(s->avctx->debug&FF_DEBUG_PICT_INFO){
- printf("fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, flag3:%d, slices:%d\n",
- fps, s->bit_rate, w->mspel_bit, w->abt_flag, w->j_type_bit, w->top_left_mv_flag, w->per_mb_rl_bit, code, w->flag3,
- code);
- }
- return 0;
-}
-
-int ff_wmv2_decode_picture_header(MpegEncContext * s)
-{
- Wmv2Context * const w= (Wmv2Context*)s;
- int code;
-
-#if 0
-{
-int i;
-for(i=0; i<s->gb.size*8; i++)
- printf("%d", get_bits1(&s->gb));
-// get_bits1(&s->gb);
-printf("END\n");
-return -1;
-}
-#endif
- if(s->picture_number==0)
- decode_ext_header(w);
-
- s->pict_type = get_bits(&s->gb, 1) + 1;
- if(s->pict_type == I_TYPE){
- code = get_bits(&s->gb, 7);
- printf("I7:%X/\n", code);
- }
- s->qscale = get_bits(&s->gb, 5);
- if(s->qscale < 0)
- return -1;
-
- return 0;
-}
-
-int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s)
-{
- Wmv2Context * const w= (Wmv2Context*)s;
-
- if (s->pict_type == I_TYPE) {
- if(w->j_type_bit) w->j_type= get_bits1(&s->gb);
- else w->j_type= 0; //FIXME check
-
- if(!w->j_type){
- if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
- else s->per_mb_rl_table= 0;
-
- if(!s->per_mb_rl_table){
- s->rl_chroma_table_index = decode012(&s->gb);
- s->rl_table_index = decode012(&s->gb);
- }
-
- s->dc_table_index = get_bits1(&s->gb);
- }
- s->inter_intra_pred= 0;
- s->no_rounding = 1;
- if(s->avctx->debug&FF_DEBUG_PICT_INFO){
- printf("qscale:%d rlc:%d rl:%d dc:%d mbrl:%d j_type:%d \n",
- s->qscale,
- s->rl_chroma_table_index,
- s->rl_table_index,
- s->dc_table_index,
- s->per_mb_rl_table,
- w->j_type);
- }
- }else{
- int cbp_index;
- w->j_type=0;
-
- parse_mb_skip(w);
- cbp_index= decode012(&s->gb);
- if(s->qscale <= 10){
- int map[3]= {0,2,1};
- w->cbp_table_index= map[cbp_index];
- }else if(s->qscale <= 20){
- int map[3]= {1,0,2};
- w->cbp_table_index= map[cbp_index];
- }else{
- int map[3]= {2,1,0};
- w->cbp_table_index= map[cbp_index];
- }
-
- if(w->mspel_bit) s->mspel= get_bits1(&s->gb);
- else s->mspel= 0; //FIXME check
-
- if(w->abt_flag){
- w->per_mb_abt= get_bits1(&s->gb)^1;
- if(!w->per_mb_abt){
- w->abt_type= decode012(&s->gb);
- }
- }
-
- if(w->per_mb_rl_bit) s->per_mb_rl_table= get_bits1(&s->gb);
- else s->per_mb_rl_table= 0;
-
- if(!s->per_mb_rl_table){
- s->rl_table_index = decode012(&s->gb);
- s->rl_chroma_table_index = s->rl_table_index;
- }
-
- s->dc_table_index = get_bits1(&s->gb);
- s->mv_table_index = get_bits1(&s->gb);
-
- s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
- s->no_rounding ^= 1;
-
- if(s->avctx->debug&FF_DEBUG_PICT_INFO){
- printf("rl:%d rlc:%d dc:%d mv:%d mbrl:%d qp:%d mspel:%d per_mb_abt:%d abt_type:%d cbp:%d ii:%d\n",
- s->rl_table_index,
- s->rl_chroma_table_index,
- s->dc_table_index,
- s->mv_table_index,
- s->per_mb_rl_table,
- s->qscale,
- s->mspel,
- w->per_mb_abt,
- w->abt_type,
- w->cbp_table_index,
- s->inter_intra_pred);
- }
- }
- s->esc3_level_length= 0;
- s->esc3_run_length= 0;
-
-s->picture_number++; //FIXME ?
-
-
-// if(w->j_type)
-// return wmv2_decode_j_picture(w); //FIXME
-
- if(w->j_type){
- printf("J-type picture isnt supported\n");
- return -1;
- }
-
- return 0;
-}
-
-static void ff_wmv2_decode_init(MpegEncContext *s){
-}
-
-static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){
- MpegEncContext * const s= &w->s;
- int ret;
-
- ret= msmpeg4_decode_motion(s, mx_ptr, my_ptr);
-
- if(ret<0) return -1;
-
- if((((*mx_ptr)|(*my_ptr)) & 1) && s->mspel)
- w->hshift= get_bits1(&s->gb);
- else
- w->hshift= 0;
-
-//printf("%d %d ", *mx_ptr, *my_ptr);
-
- return 0;
-}
-
-static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
- MpegEncContext * const s= &w->s;
- int xy, wrap, diff, type;
- int16_t *A, *B, *C, *mot_val;
-
- wrap = s->block_wrap[0];
- xy = s->block_index[0];
-
- mot_val = s->motion_val[xy];
-
- A = s->motion_val[xy - 1];
- B = s->motion_val[xy - wrap];
- C = s->motion_val[xy + 2 - wrap];
-
- diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
-
- if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag && diff >= 8)
- type= get_bits1(&s->gb);
- else
- type= 2;
-
- if(type == 0){
- *px= A[0];
- *py= A[1];
- }else if(type == 1){
- *px= B[0];
- *py= B[1];
- }else{
- /* special case for first (slice) line */
- if (s->first_slice_line) {
- *px = A[0];
- *py = A[1];
- } else {
- *px = mid_pred(A[0], B[0], C[0]);
- *py = mid_pred(A[1], B[1], C[1]);
- }
- }
-
- return mot_val;
-}
-
-static inline int wmv2_decode_inter_block(Wmv2Context *w, DCTELEM *block, int n, int cbp){
- MpegEncContext * const s= &w->s;
- static const int sub_cbp_table[3]= {2,3,1};
- int sub_cbp;
-
- if(!cbp){
- s->block_last_index[n] = -1;
-
- return 0;
- }
-
- if(w->per_block_abt)
- w->abt_type= decode012(&s->gb);
-#if 0
- if(w->per_block_abt)
- printf("B%d", w->abt_type);
-#endif
- w->abt_type_table[n]= w->abt_type;
-
- if(w->abt_type){
-// const uint8_t *scantable= w->abt_scantable[w->abt_type-1].permutated;
- const uint8_t *scantable= w->abt_scantable[w->abt_type-1].scantable;
-// const uint8_t *scantable= w->abt_type-1 ? w->abt_scantable[1].permutated : w->abt_scantable[0].scantable;
-
- sub_cbp= sub_cbp_table[ decode012(&s->gb) ];
-// printf("S%d", sub_cbp);
-
- if(sub_cbp&1){
- if (msmpeg4_decode_block(s, block, n, 1, scantable) < 0)
- return -1;
- }
-
- if(sub_cbp&2){
- if (msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0)
- return -1;
- }
- s->block_last_index[n] = 63;
-
- return 0;
- }else{
- return msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated);
- }
-}
-
-static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
- MpegEncContext * const s= &w->s;
-
- switch(w->abt_type_table[n]){
- case 0:
- if (s->block_last_index[n] >= 0) {
- s->dsp.idct_add (dst, stride, block1);
- }
- break;
- case 1:
- simple_idct84_add(dst , stride, block1);
- simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
- memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
- break;
- case 2:
- simple_idct48_add(dst , stride, block1);
- simple_idct48_add(dst + 4 , stride, w->abt_block2[n]);
- memset(w->abt_block2[n], 0, 64*sizeof(DCTELEM));
- break;
- default:
- fprintf(stderr, "internal error in WMV2 abt\n");
- }
-}
-
-void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block1[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr){
- Wmv2Context * const w= (Wmv2Context*)s;
-
- wmv2_add_block(w, block1[0], dest_y , s->linesize, 0);
- wmv2_add_block(w, block1[1], dest_y + 8 , s->linesize, 1);
- wmv2_add_block(w, block1[2], dest_y + 8*s->linesize, s->linesize, 2);
- wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);
-
- if(s->flags&CODEC_FLAG_GRAY) return;
-
- wmv2_add_block(w, block1[4], dest_cb , s->uvlinesize, 4);
- wmv2_add_block(w, block1[5], dest_cr , s->uvlinesize, 5);
-}
-
-void ff_mspel_motion(MpegEncContext *s,
- uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
- uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
- int motion_x, int motion_y, int h)
-{
- Wmv2Context * const w= (Wmv2Context*)s;
- uint8_t *ptr;
- int dxy, offset, mx, my, src_x, src_y, v_edge_pos, linesize, uvlinesize;
- int emu=0;
-
- dxy = ((motion_y & 1) << 1) | (motion_x & 1);
- dxy = 2*dxy + w->hshift;
- src_x = s->mb_x * 16 + (motion_x >> 1);
- src_y = s->mb_y * 16 + (motion_y >> 1);
-
- /* WARNING: do no forget half pels */
- v_edge_pos = s->v_edge_pos;
- src_x = clip(src_x, -16, s->width);
- src_y = clip(src_y, -16, s->height);
- linesize = s->linesize;
- uvlinesize = s->uvlinesize;
- ptr = ref_picture[0] + (src_y * linesize) + src_x;
-
- if(s->flags&CODEC_FLAG_EMU_EDGE){
- if(src_x<1 || src_y<1 || src_x + 17 >= s->h_edge_pos
- || src_y + h+1 >= v_edge_pos){
- ff_emulated_edge_mc(s->edge_emu_buffer, ptr - 1 - s->linesize, s->linesize, 19, 19,
- src_x-1, src_y-1, s->h_edge_pos, s->v_edge_pos);
- ptr= s->edge_emu_buffer + 1 + s->linesize;
- emu=1;
- }
- }
-
- s->dsp.put_mspel_pixels_tab[dxy](dest_y , ptr , linesize);
- s->dsp.put_mspel_pixels_tab[dxy](dest_y+8 , ptr+8 , linesize);
- s->dsp.put_mspel_pixels_tab[dxy](dest_y +8*linesize, ptr +8*linesize, linesize);
- s->dsp.put_mspel_pixels_tab[dxy](dest_y+8+8*linesize, ptr+8+8*linesize, linesize);
-
- if(s->flags&CODEC_FLAG_GRAY) return;
-
- if (s->out_format == FMT_H263) {
- dxy = 0;
- if ((motion_x & 3) != 0)
- dxy |= 1;
- if ((motion_y & 3) != 0)
- dxy |= 2;
- mx = motion_x >> 2;
- my = motion_y >> 2;
- } else {
- mx = motion_x / 2;
- my = motion_y / 2;
- dxy = ((my & 1) << 1) | (mx & 1);
- mx >>= 1;
- my >>= 1;
- }
-
- src_x = s->mb_x * 8 + mx;
- src_y = s->mb_y * 8 + my;
- src_x = clip(src_x, -8, s->width >> 1);
- if (src_x == (s->width >> 1))
- dxy &= ~1;
- src_y = clip(src_y, -8, s->height >> 1);
- if (src_y == (s->height >> 1))
- dxy &= ~2;
- offset = (src_y * uvlinesize) + src_x;
- ptr = ref_picture[1] + offset;
- if(emu){
- ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9,
- src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
- ptr= s->edge_emu_buffer;
- }
- pix_op[1][dxy](dest_cb, ptr, uvlinesize, h >> 1);
-
- ptr = ref_picture[2] + offset;
- if(emu){
- ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9,
- src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
- ptr= s->edge_emu_buffer;
- }
- pix_op[1][dxy](dest_cr, ptr, uvlinesize, h >> 1);
-}
-
-
-static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64])
-{
- Wmv2Context * const w= (Wmv2Context*)s;
- int cbp, code, i;
- uint8_t *coded_val;
-
- if(w->j_type) return 0;
-
- if (s->pict_type == P_TYPE) {
- if(IS_SKIP(s->current_picture.mb_type[s->mb_y * s->mb_stride + s->mb_x])){
- /* skip mb */
- s->mb_intra = 0;
- for(i=0;i<6;i++)
- s->block_last_index[i] = -1;
- s->mv_dir = MV_DIR_FORWARD;
- s->mv_type = MV_TYPE_16X16;
- s->mv[0][0][0] = 0;
- s->mv[0][0][1] = 0;
- s->mb_skiped = 1;
- w->hshift=0;
- return 0;
- }
-
- code = get_vlc2(&s->gb, mb_non_intra_vlc[w->cbp_table_index].table, MB_NON_INTRA_VLC_BITS, 3);
- if (code < 0)
- return -1;
- s->mb_intra = (~code & 0x40) >> 6;
-
- cbp = code & 0x3f;
- } else {
- s->mb_intra = 1;
- code = get_vlc2(&s->gb, mb_intra_vlc.table, MB_INTRA_VLC_BITS, 2);
- if (code < 0){
- fprintf(stderr, "II-cbp illegal at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
- /* predict coded block pattern */
- cbp = 0;
- for(i=0;i<6;i++) {
- int val = ((code >> (5 - i)) & 1);
- if (i < 4) {
- int pred = coded_block_pred(s, i, &coded_val);
- val = val ^ pred;
- *coded_val = val;
- }
- cbp |= val << (5 - i);
- }
- }
-
- if (!s->mb_intra) {
- int mx, my;
-//printf("P at %d %d\n", s->mb_x, s->mb_y);
- wmv2_pred_motion(w, &mx, &my);
-
- if(cbp){
- if(s->per_mb_rl_table){
- s->rl_table_index = decode012(&s->gb);
- s->rl_chroma_table_index = s->rl_table_index;
- }
-
- if(w->abt_flag && w->per_mb_abt){
- w->per_block_abt= get_bits1(&s->gb);
- if(!w->per_block_abt)
- w->abt_type= decode012(&s->gb);
- }else
- w->per_block_abt=0;
- }
-
- if (wmv2_decode_motion(w, &mx, &my) < 0)
- return -1;
-
- s->mv_dir = MV_DIR_FORWARD;
- s->mv_type = MV_TYPE_16X16;
- s->mv[0][0][0] = mx;
- s->mv[0][0][1] = my;
-
- for (i = 0; i < 6; i++) {
- if (wmv2_decode_inter_block(w, block[i], i, (cbp >> (5 - i)) & 1) < 0)
- {
- fprintf(stderr,"\nerror while decoding inter block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
- return -1;
- }
- }
- } else {
-//if(s->pict_type==P_TYPE)
-// printf("%d%d ", s->inter_intra_pred, cbp);
-//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24));
- s->ac_pred = get_bits1(&s->gb);
- if(s->inter_intra_pred){
- s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
-// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
- }
- if(s->per_mb_rl_table && cbp){
- s->rl_table_index = decode012(&s->gb);
- s->rl_chroma_table_index = s->rl_table_index;
- }
-
- for (i = 0; i < 6; i++) {
- if (msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0)
- {
- fprintf(stderr,"\nerror while decoding intra block: %d x %d (%d)\n", s->mb_x, s->mb_y, i);
- return -1;
- }
- }
- }
-
- return 0;
-}
-
-static int wmv2_decode_init(AVCodecContext *avctx){
- Wmv2Context * const w= avctx->priv_data;
-
- if(ff_h263_decode_init(avctx) < 0)
- return -1;
-
- wmv2_common_init(w);
-
- return 0;
-}
-
-AVCodec wmv2_decoder = {
- "wmv2",
- CODEC_TYPE_VIDEO,
- CODEC_ID_WMV2,
- sizeof(Wmv2Context),
- wmv2_decode_init,
- NULL,
- ff_h263_decode_end,
- ff_h263_decode_frame,
- CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
-};
-
-#ifdef CONFIG_ENCODERS
-AVCodec wmv2_encoder = {
- "wmv2",
- CODEC_TYPE_VIDEO,
- CODEC_ID_WMV2,
- sizeof(Wmv2Context),
- wmv2_encode_init,
- MPV_encode_picture,
- MPV_encode_end,
-};
-#endif
projects / synfig.git / blobdiff