--- decoder.c 2002/04/04 13:58:06 1.9 +++ decoder.c 2002/04/28 23:35:25 1.13 @@ -1,50 +1,53 @@ /************************************************************************** * - * XVID MPEG-4 VIDEO CODEC - * decoder main + * XVID MPEG-4 VIDEO CODEC + * - Decoder main module - * - * This program is an implementation of a part of one or more MPEG-4 - * Video tools as specified in ISO/IEC 14496-2 standard. Those intending - * to use this software module in hardware or software products are - * advised that its use may infringe existing patents or copyrights, and - * any such use would be at such party's own risk. The original - * developer of this software module and his/her company, and subsequent - * editors and their companies, will have no liability for use of this - * software or modifications or derivatives thereof. + * This program is an implementation of a part of one or more MPEG-4 + * Video tools as specified in ISO/IEC 14496-2 standard. Those intending + * to use this software module in hardware or software products are + * advised that its use may infringe existing patents or copyrights, and + * any such use would be at such party's own risk. The original + * developer of this software module and his/her company, and subsequent + * editors and their companies, will have no liability for use of this + * software or modifications or derivatives thereof. * - * This program is xvid_free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the xvid_free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. * - * This program 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 General Public License for more details. + * This program 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 General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the xvid_free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * *************************************************************************/ /************************************************************************** * - * History: + * History: * + * 22.04.2002 add some B-frame decode support; chenm001 * 29.03.2002 interlacing fix - compensated block wasn't being used when * reconstructing blocks, thus artifacts * interlacing speedup - used transfers to re-interlace * interlaced decoding should be as fast as progressive now * 26.03.2002 interlacing support - moved transfers outside decode loop - * 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block - * 22.12.2001 block based interpolation - * 01.12.2001 inital version; (c)2001 peter ross + * 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block + * 22.12.2001 lock based interpolation + * 01.12.2001 inital version; (c)2001 peter ross + * + * $Id: decoder.c,v 1.13 2002/04/28 23:35:25 edgomez Exp $ * *************************************************************************/ #include -#include // memset +#include #include "xvid.h" #include "portab.h" @@ -95,9 +98,18 @@ return XVID_ERR_MEMORY; } - if (image_create(&dec->refn, dec->edged_width, dec->edged_height)) + if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) + { + image_destroy(&dec->cur, dec->edged_width, dec->edged_height); + xvid_free(dec); + return XVID_ERR_MEMORY; + } + // add by chenm001 + // for support B-frame to reference last 2 frame + if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { image_destroy(&dec->cur, dec->edged_width, dec->edged_height); + image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); xvid_free(dec); return XVID_ERR_MEMORY; } @@ -119,7 +131,7 @@ int decoder_destroy(DECODER * dec) { xvid_free(dec->mbs); - image_destroy(&dec->refn, dec->edged_width, dec->edged_height); + image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); image_destroy(&dec->cur, dec->edged_width, dec->edged_height); xvid_free(dec); @@ -226,7 +238,7 @@ stop_idct_timer(); } - if (pMB->field_dct) + if (dec->interlacing && pMB->field_dct) { next_block = stride; stride *= 2; @@ -299,12 +311,12 @@ } start_timer(); - interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x_pos, 16*y_pos , pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); - interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); - interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x_pos, 16*y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); - interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x_pos + 8, 16*y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); - interpolate8x8_switch(dec->cur.u, dec->refn.u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); - interpolate8x8_switch(dec->cur.v, dec->refn.v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); + interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos , pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); + interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); + interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); + interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); + interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); + interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); stop_comp_timer(); for (i = 0; i < 6; i++) @@ -334,7 +346,7 @@ } } - if (pMB->field_dct) + if (dec->interlacing && pMB->field_dct) { next_block = stride; stride *= 2; @@ -425,7 +437,7 @@ int range = (64 * scale_fac); VECTOR pmv[4]; - uint32_t psad[4]; + int32_t psad[4]; int mv_x, mv_y; int pmv_x, pmv_y; @@ -471,10 +483,8 @@ uint32_t x, y; - image_swap(&dec->cur, &dec->refn); - start_timer(); - image_setedges(&dec->refn, dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); + image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); stop_edges_timer(); for (y = 0; y < dec->mb_height; y++) @@ -590,27 +600,27 @@ start_timer(); transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), - dec->refn.y + (16*y)*dec->edged_width + (16*x), + dec->refn[0].y + (16*y)*dec->edged_width + (16*x), dec->edged_width); transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), - dec->refn.y + (16*y)*dec->edged_width + (16*x+8), + dec->refn[0].y + (16*y)*dec->edged_width + (16*x+8), dec->edged_width); transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), - dec->refn.y + (16*y+8)*dec->edged_width + (16*x), + dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x), dec->edged_width); transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), - dec->refn.y + (16*y+8)*dec->edged_width + (16*x+8), + dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x+8), dec->edged_width); transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), - dec->refn.u + (8*y)*dec->edged_width/2 + (8*x), + dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), dec->edged_width/2); transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), - dec->refn.v + (8*y)*dec->edged_width/2 + (8*x), + dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), dec->edged_width/2); stop_transfer_timer(); @@ -627,12 +637,22 @@ uint32_t quant; uint32_t fcode; uint32_t intra_dc_threshold; + uint32_t vop_type; start_global_timer(); BitstreamInit(&bs, frame->bitstream, frame->length); - switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) + // add by chenm001 + // for support B-frame to reference last 2 frame + vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold); + + if (vop_type==I_VOP || vop_type==P_VOP){ + image_swap(&dec->refn[0], &dec->refn[1]); + image_swap(&dec->cur, &dec->refn[0]); + } + + switch (vop_type) { case P_VOP : decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold);