static int rv10_decode_packet(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int buf_size2) { MpegEncContext *s = avctx->priv_data; int mb_count, mb_pos, left, start_mb_x; init_get_bits(&s->gb, buf, buf_size*8); if(s->codec_id ==CODEC_ID_RV10) mb_count = rv10_decode_picture_header(s); else mb_count = rv20_decode_picture_header(s); if (mb_count < 0) { av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n"); } if (s->mb_x >= s->mb_width || s->mb_y >= s->mb_height) { av_log(s->avctx, AV_LOG_ERROR, "POS ERROR %d %d\n", s->mb_x, s->mb_y); } mb_pos = s->mb_y * s->mb_width + s->mb_x; left = s->mb_width * s->mb_height - mb_pos; if (mb_count > left) { av_log(s->avctx, AV_LOG_ERROR, "COUNT ERROR\n"); } if ((s->mb_x == 0 && s->mb_y == 0) || s->current_picture_ptr==NULL) { if(s->current_picture_ptr){ //FIXME write parser so we always have complete frames? ff_er_frame_end(s); MPV_frame_end(s); s->mb_x= s->mb_y = s->resync_mb_x = s->resync_mb_y= 0; } if(MPV_frame_start(s, avctx) < 0) ff_er_frame_start(s); } av_dlog(avctx, "qscale=%d\n", s->qscale); /* default quantization values */ if(s->codec_id== CODEC_ID_RV10){ if(s->mb_y==0) s->first_slice_line=1; }else{ s->first_slice_line=1; s->resync_mb_x= s->mb_x; } start_mb_x= s->mb_x; s->resync_mb_y= s->mb_y; if(s->h263_aic){ s->y_dc_scale_table= s->c_dc_scale_table= ff_aic_dc_scale_table; }else{ s->y_dc_scale_table= s->c_dc_scale_table= ff_mpeg1_dc_scale_table; } if(s->modified_quant) s->chroma_qscale_table= ff_h263_chroma_qscale_table; ff_set_qscale(s, s->qscale); s->rv10_first_dc_coded[0] = 0; s->rv10_first_dc_coded[1] = 0; s->rv10_first_dc_coded[2] = 0; s->block_wrap[0]= s->block_wrap[1]= s->block_wrap[2]= s->block_wrap[3]= s->b8_stride; s->block_wrap[4]= s->block_wrap[5]= s->mb_stride; ff_init_block_index(s); /* decode each macroblock */ for(s->mb_num_left= mb_count; s->mb_num_left>0; s->mb_num_left--) { int ret; ff_update_block_index(s); av_dlog(avctx, "**mb x=%d y=%d\n", s->mb_x, s->mb_y); s->mv_dir = MV_DIR_FORWARD; s->mv_type = MV_TYPE_16X16; ret=ff_h263_decode_mb(s, s->block); if (ret != SLICE_ERROR && s->gb.size_in_bits < get_bits_count(&s->gb) && 8*buf_size2 >= get_bits_count(&s->gb)){ av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", s->gb.size_in_bits, 8*buf_size2); s->gb.size_in_bits= 8*buf_size2; ret= SLICE_OK; } if (ret == SLICE_ERROR || s->gb.size_in_bits < get_bits_count(&s->gb)) { av_log(s->avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", s->mb_x, s->mb_y); } if(s->pict_type != AV_PICTURE_TYPE_B) ff_h263_update_motion_val(s); MPV_decode_mb(s, s->block); if(s->loop_filter) ff_h263_loop_filter(s); if (++s->mb_x == s->mb_width) { s->mb_x = 0; s->mb_y++; ff_init_block_index(s); } if(s->mb_x == s->resync_mb_x) s->first_slice_line=0; if(ret == SLICE_END) break; } ff_er_add_slice(s, start_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END); return s->gb.size_in_bits; }