diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/wmv2dec.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/wmv2dec.c | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/contrib/ffmpeg/libavcodec/wmv2dec.c b/contrib/ffmpeg/libavcodec/wmv2dec.c deleted file mode 100644 index cb3795512..000000000 --- a/contrib/ffmpeg/libavcodec/wmv2dec.c +++ /dev/null @@ -1,495 +0,0 @@ -/* - * Copyright (c) 2002 The FFmpeg Project. - * - * 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 2.1 of the License, or (at your option) any later version. - * - * 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "avcodec.h" -#include "dsputil.h" -#include "mpegvideo.h" -#include "msmpeg4.h" -#include "msmpeg4data.h" -#include "intrax8.h" -#include "wmv2.h" - - -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); - s->loop_filter = 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){ - av_log(s->avctx, AV_LOG_DEBUG, "fps:%d, br:%d, qpbit:%d, abt_flag:%d, j_type_bit:%d, tl_mv_flag:%d, mbrl_bit:%d, code:%d, loop_filter:%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, s->loop_filter, - 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_bits1(&s->gb) + 1; - if(s->pict_type == I_TYPE){ - code = get_bits(&s->gb, 7); - av_log(s->avctx, AV_LOG_DEBUG, "I7:%X/\n", code); - } - s->chroma_qscale= 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){ - av_log(s->avctx, AV_LOG_DEBUG, "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= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE); - s->no_rounding ^= 1; - - if(s->avctx->debug&FF_DEBUG_PICT_INFO){ - av_log(s->avctx, AV_LOG_DEBUG, "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){ - ff_intrax8_decode_picture(&w->x8, 2*s->qscale, (s->qscale-1)|1 ); - return 1; - } - - return 0; -} - -static inline int wmv2_decode_motion(Wmv2Context *w, int *mx_ptr, int *my_ptr){ - MpegEncContext * const s= &w->s; - int ret; - - ret= ff_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->b8_stride; - xy = s->block_index[0]; - - mot_val = s->current_picture.motion_val[0][xy]; - - A = s->current_picture.motion_val[0][xy - 1]; - B = s->current_picture.motion_val[0][xy - wrap]; - C = s->current_picture.motion_val[0][xy + 2 - wrap]; - - if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag) - diff= FFMAX(FFABS(A[0] - B[0]), FFABS(A[1] - B[1])); - else - diff=0; - - if(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 (ff_msmpeg4_decode_block(s, block, n, 1, scantable) < 0) - return -1; - } - - if(sub_cbp&2){ - if (ff_msmpeg4_decode_block(s, w->abt_block2[n], n, 1, scantable) < 0) - return -1; - } - s->block_last_index[n] = 63; - - return 0; - }else{ - return ff_msmpeg4_decode_block(s, block, n, 1, s->inter_scantable.permutated); - } -} - - -int ff_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_skipped = 1; - w->hshift=0; - return 0; - } - - code = get_vlc2(&s->gb, ff_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, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); - if (code < 0){ - av_log(s->avctx, AV_LOG_ERROR, "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 = ff_msmpeg4_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){ - s->dsp.clear_blocks(s->block[0]); - 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) - { - av_log(s->avctx, AV_LOG_ERROR, "\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, ff_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; - } - - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) - { - av_log(s->avctx, AV_LOG_ERROR, "\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(avctx->idct_algo==FF_IDCT_AUTO){ - avctx->idct_algo=FF_IDCT_WMV2; - } - - if(ff_h263_decode_init(avctx) < 0) - return -1; - - ff_wmv2_common_init(w); - - ff_intrax8_common_init(&w->x8,&w->s); - - return 0; -} - -static int wmv2_decode_end(AVCodecContext *avctx) -{ - Wmv2Context *w = avctx->priv_data; - - ff_intrax8_common_end(&w->x8); - return ff_h263_decode_end(avctx); -} - -AVCodec wmv2_decoder = { - "wmv2", - CODEC_TYPE_VIDEO, - CODEC_ID_WMV2, - sizeof(Wmv2Context), - wmv2_decode_init, - NULL, - wmv2_decode_end, - ff_h263_decode_frame, - CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, -}; |