--- decoder.c 2003/01/03 16:25:14 1.37.2.25 +++ decoder.c 2003/02/11 21:56:31 1.46 @@ -3,17 +3,13 @@ * 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. + * Copyright(C) 2002 MinChen + * 2002 Peter Ross * - * 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 + * This file is part of XviD, a free MPEG-4 video encoder/decoder + * + * XviD 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. * @@ -26,36 +22,36 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * - *************************************************************************/ - -/************************************************************************** + * Under section 8 of the GNU General Public License, the copyright + * holders of XVID explicitly forbid distribution in the following + * countries: + * + * - Japan + * - United States of America * - * History: + * Linking XviD statically or dynamically with other modules is making a + * combined work based on XviD. Thus, the terms and conditions of the + * GNU General Public License cover the whole combination. * - * 15.07.2002 fix a bug in B-frame decode at DIRECT mode - * MinChen - * 10.07.2002 added BFRAMES_DEC_DEBUG support - * Fix a little bug for low_delay flage - * MinChen - * 28.06.2002 added basic resync support to iframe/pframe_decode() - * 22.06.2002 added primative N_VOP support - * #define BFRAMES_DEC now enables Minchen's bframe decoder - * 08.05.2002 add low_delay support for B_VOP decode - * MinChen - * 05.05.2002 fix some B-frame decode problem - * 02.05.2002 add B-frame decode support(have some problem); - * MinChen - * 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 lock based interpolation - * 01.12.2001 inital version; (c)2001 peter ross + * As a special exception, the copyright holders of XviD give you + * permission to link XviD with independent modules that communicate with + * XviD solely through the VFW1.1 and DShow interfaces, regardless of the + * license terms of these independent modules, and to copy and distribute + * the resulting combined work under terms of your choice, provided that + * every copy of the combined work is accompanied by a complete copy of + * the source code of XviD (the version of XviD used to produce the + * combined work), being distributed under the terms of the GNU General + * Public License plus this exception. An independent module is a module + * which is not derived from or based on XviD. * - * $Id: decoder.c,v 1.37.2.25 2003/01/03 16:25:14 suxen_drol Exp $ + * Note that people who make modified versions of XviD are not obligated + * to grant this special exception for their modified versions; it is + * their choice whether to do so. The GNU General Public License gives + * permission to release a modified version without this exception; this + * exception also makes it possible to release a modified version which + * carries forward this exception. + * + * $Id: decoder.c,v 1.46 2003/02/11 21:56:31 edgomez Exp $ * *************************************************************************/ @@ -79,42 +75,36 @@ #include "dct/fdct.h" #include "utils/mem_transfer.h" #include "image/interpolate8x8.h" -#include "image/reduced.h" -#include "image/font.h" #include "bitstream/mbcoding.h" #include "prediction/mbprediction.h" #include "utils/timer.h" #include "utils/emms.h" -#include "motion/motion.h" #include "image/image.h" #include "image/colorspace.h" #include "utils/mem_align.h" int -decoder_resize(DECODER * dec) +decoder_create(XVID_DEC_PARAM * param) { - /* free existing */ - - image_destroy(&dec->cur, dec->edged_width, dec->edged_height); - image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); - image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); - image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); - image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); + DECODER *dec; - if (dec->last_mbs) - xvid_free(dec->last_mbs); - if (dec->mbs) - xvid_free(dec->mbs); + dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); + if (dec == NULL) { + return XVID_ERR_MEMORY; + } + param->handle = dec; - /* realloc */ + dec->width = param->width; + dec->height = param->height; dec->mb_width = (dec->width + 15) / 16; dec->mb_height = (dec->height + 15) / 16; dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; + dec->low_delay = 0; if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { xvid_free(dec); @@ -126,16 +116,15 @@ xvid_free(dec); return XVID_ERR_MEMORY; } - - // add by chenm001 - // for support B-frame to reference last 2 frame + /* 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; } - if (image_create(&dec->tmp, dec->edged_width, dec->edged_height)) { + if (image_create(&dec->refn[2], 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); image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); @@ -143,15 +132,6 @@ return XVID_ERR_MEMORY; } - if (image_create(&dec->qtmp, 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); - image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); - image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); - xvid_free(dec); - return XVID_ERR_MEMORY; - } - dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); @@ -159,15 +139,15 @@ image_destroy(&dec->cur, dec->edged_width, dec->edged_height); image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); - image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); - image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); + image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); xvid_free(dec); return XVID_ERR_MEMORY; } + memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); - // add by chenm001 - // for skip MB flag + /* add by chenm001 */ + /* for skip MB flag */ dec->last_mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); @@ -176,58 +156,21 @@ image_destroy(&dec->cur, dec->edged_width, dec->edged_height); image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); - image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); - image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); + image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); xvid_free(dec); return XVID_ERR_MEMORY; } memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); - return XVID_ERR_OK; -} - - -int -decoder_create(XVID_DEC_PARAM * param) -{ - DECODER *dec; - - dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); - if (dec == NULL) { - return XVID_ERR_MEMORY; - } - memset(dec, 0, sizeof(DECODER)); - - param->handle = dec; - - dec->width = param->width; - dec->height = param->height; - - image_null(&dec->cur); - image_null(&dec->refn[0]); - image_null(&dec->refn[1]); - image_null(&dec->tmp); - image_null(&dec->qtmp); - - dec->mbs = NULL; - dec->last_mbs = NULL; - init_timer(); - // add by chenm001 - // for support B-frame to save reference frame's time - dec->frames = 0; + /* add by chenm001 */ + /* for support B-frame to save reference frame's time */ + dec->frames = -1; dec->time = dec->time_base = dec->last_time_base = 0; - dec->low_delay = 0; - dec->packed_mode = 0; - dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); - - if (dec->fixed_dimensions) - return decoder_resize(dec); - else - return XVID_ERR_OK; + return XVID_ERR_OK; } @@ -238,8 +181,7 @@ xvid_free(dec->mbs); image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); - image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); - image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); + image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); image_destroy(&dec->cur, dec->edged_width, dec->edged_height); xvid_free(dec); @@ -256,7 +198,7 @@ -// decode an intra macroblock +/* decode an intra macroblock */ void decoder_mbintra(DECODER * dec, @@ -268,8 +210,7 @@ Bitstream * bs, const uint32_t quant, const uint32_t intra_dc_threshold, - const unsigned int bound, - const int reduced_resolution) + const unsigned int bound) { DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); @@ -282,17 +223,11 @@ uint32_t iQuant = pMB->quant; uint8_t *pY_Cur, *pU_Cur, *pV_Cur; - if (reduced_resolution) { - pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5); - pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4); - pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4); - }else{ - pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); - pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); - pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); - } + pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); + pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); + pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); - memset(block, 0, 6 * 64 * sizeof(int16_t)); // clear + memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */ for (i = 0; i < 6; i++) { uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); @@ -315,7 +250,7 @@ dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; if (dc_size > 8) { - BitstreamSkip(bs, 1); // marker + BitstreamSkip(bs, 1); /* marker */ } block[i * 64 + 0] = dc_dif; @@ -327,12 +262,10 @@ } start_timer(); - if (cbp & (1 << (5 - i))) // coded + if (cbp & (1 << (5 - i))) /* coded */ { - int direction = dec->alternate_vertical_scan ? - 2 : pMB->acpred_directions[i]; - - get_intra_block(bs, &block[i * 64], direction, start_coeff); + get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], + start_coeff); } stop_coding_timer(); @@ -351,7 +284,6 @@ start_timer(); idct(&data[i * 64]); stop_idct_timer(); - } if (dec->interlacing && pMB->field_dct) { @@ -360,24 +292,12 @@ } start_timer(); - - if (reduced_resolution) - { - next_block*=2; - copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); - copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); - copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); - copy_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride); - copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); - copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); - }else{ - transfer_16to8copy(pY_Cur, &data[0 * 64], stride); - transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); - transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); - transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); - transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); - transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); - } + transfer_16to8copy(pY_Cur, &data[0 * 64], stride); + transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); + transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); + transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); + transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); + transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); stop_transfer_timer(); } @@ -387,8 +307,11 @@ #define SIGN(X) (((X)>0)?1:-1) #define ABS(X) (((X)>0)?(X):-(X)) +static const uint32_t roundtab[16] = + { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }; + -// decode an inter macroblock +/* decode an inter macroblock */ void decoder_mbinter(DECODER * dec, @@ -399,8 +322,7 @@ const uint32_t cbp, Bitstream * bs, const uint32_t quant, - const uint32_t rounding, - const int reduced_resolution) + const uint32_t rounding) { DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); @@ -408,152 +330,55 @@ uint32_t stride = dec->edged_width; uint32_t stride2 = stride / 2; - uint32_t next_block = stride * (reduced_resolution ? 16 : 8); + uint32_t next_block = stride * 8; uint32_t i; uint32_t iQuant = pMB->quant; uint8_t *pY_Cur, *pU_Cur, *pV_Cur; - int uv_dx, uv_dy; - VECTOR mv[4]; /* local copy of mvs */ - if (reduced_resolution) { - pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5); - pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4); - pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4); - for (i = 0; i < 4; i++) { - mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x); - mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y); - } - }else{ - pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); - pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); - pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); - for (i = 0; i < 4; i++) - mv[i] = pMB->mvs[i]; - } + pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); + pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); + pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { - uv_dx = mv[0].x; - uv_dy = mv[0].y; - - if (dec->quarterpel) - { - uv_dx /= 2; - uv_dy /= 2; - } - - uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; - uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; - - start_timer(); - if (reduced_resolution) - { - interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos, - mv[0].x, mv[0].y, stride, rounding); - interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos, - uv_dx, uv_dy, stride2, rounding); - interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos, - uv_dx, uv_dy, stride2, rounding); - - } - else - { - if(dec->quarterpel) { - interpolate16x16_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - mv[0].x, mv[0].y, stride, rounding); - } - else { - interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, - mv[0].x, mv[0].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(); + uv_dx = pMB->mvs[0].x; + uv_dy = pMB->mvs[0].y; - } else { /* MODE_INTER4V */ + uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; + uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; + } else { int sum; - - if(dec->quarterpel) - sum = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2); - else - sum = mv[0].x + mv[1].x + mv[2].x + mv[3].x; - - uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; - - if(dec->quarterpel) - sum = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2); - else - sum = mv[0].y + mv[1].y + mv[2].y + mv[3].y; + sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; - uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; + uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); - start_timer(); - if (reduced_resolution) - { - interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos, - mv[0].x, mv[0].y, stride, rounding); - interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos + 16, 32*y_pos, - mv[1].x, mv[1].y, stride, rounding); - interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos + 16, - mv[2].x, mv[2].y, stride, rounding); - interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos + 16, 32*y_pos + 16, - mv[3].x, mv[3].y, stride, rounding); - interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos, - uv_dx, uv_dy, stride2, rounding); - interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos, - uv_dx, uv_dy, stride2, rounding); - - // set_block(pY_Cur, stride, 32, 32, 127); - } - else - { - if(dec->quarterpel) { - interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - mv[0].x, mv[0].y, stride, rounding); - interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, - mv[1].x, mv[1].y, stride, rounding); - interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, - mv[2].x, mv[2].y, stride, rounding); - interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, - mv[3].x, mv[3].y, stride, rounding); - } - else { - interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, - mv[0].x, mv[0].y, stride, rounding); - interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, - mv[1].x, mv[1].y, stride, rounding); - interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, - mv[2].x, mv[2].y, stride, rounding); - interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, - mv[3].x, mv[3].y, stride, rounding); - } + sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; - 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(); + uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); } - for (i = 0; i < 6; i++) { - int direction = dec->alternate_vertical_scan ? 2 : 0; + start_timer(); + 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(); - if (cbp & (1 << (5 - i))) // coded + for (i = 0; i < 6; i++) { + if (cbp & (1 << (5 - i))) /* coded */ { - memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear + memset(&block[i * 64], 0, 64 * sizeof(int16_t)); /* clear */ start_timer(); - get_inter_block(bs, &block[i * 64], direction); + get_inter_block(bs, &block[i * 64]); stop_coding_timer(); start_timer(); @@ -576,36 +401,18 @@ } start_timer(); - if (reduced_resolution) - { - if (cbp & 32) - add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); - if (cbp & 16) - add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); - if (cbp & 8) - add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); - if (cbp & 4) - add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride); - if (cbp & 2) - add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); - if (cbp & 1) - add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); - } - else - { - if (cbp & 32) - transfer_16to8add(pY_Cur, &data[0 * 64], stride); - if (cbp & 16) - transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); - if (cbp & 8) - transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); - if (cbp & 4) - transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); - if (cbp & 2) - transfer_16to8add(pU_Cur, &data[4 * 64], stride2); - if (cbp & 1) - transfer_16to8add(pV_Cur, &data[5 * 64], stride2); - } + if (cbp & 32) + transfer_16to8add(pY_Cur, &data[0 * 64], stride); + if (cbp & 16) + transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); + if (cbp & 8) + transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); + if (cbp & 4) + transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); + if (cbp & 2) + transfer_16to8add(pU_Cur, &data[4 * 64], stride2); + if (cbp & 1) + transfer_16to8add(pV_Cur, &data[5 * 64], stride2); stop_transfer_timer(); } @@ -613,25 +420,16 @@ void decoder_iframe(DECODER * dec, Bitstream * bs, - int reduced_resolution, int quant, int intra_dc_threshold) { uint32_t bound; uint32_t x, y; - uint32_t mb_width = dec->mb_width; - uint32_t mb_height = dec->mb_height; - - if (reduced_resolution) - { - mb_width = (dec->width + 31) / 32; - mb_height = (dec->height + 31) / 32; - } bound = 0; - for (y = 0; y < mb_height; y++) { - for (x = 0; x < mb_width; x++) { + for (y = 0; y < dec->mb_height; y++) { + for (x = 0; x < dec->mb_width; x++) { MACROBLOCK *mb; uint32_t mcbpc; uint32_t cbpc; @@ -644,10 +442,9 @@ if (check_resync_marker(bs, 0)) { - bound = read_video_packet_header(bs, dec, 0, - &quant, NULL, NULL, &intra_dc_threshold); - x = bound % mb_width; - y = bound / mb_width; + bound = read_video_packet_header(bs, 0, &quant); + x = bound % dec->mb_width; + y = bound / dec->mb_width; } mb = &dec->mbs[y * dec->mb_width + x]; @@ -678,15 +475,15 @@ if (dec->interlacing) { mb->field_dct = BitstreamGetBit(bs); - DPRINTF(DPRINTF_MB,"deci: field_dct: %i", mb->field_dct); + DPRINTF(DPRINTF_DEBUG, "deci: field_dct: %d", mb->field_dct); } decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, - intra_dc_threshold, bound, reduced_resolution); - + intra_dc_threshold, bound); } if(dec->out_frm) - output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width); + output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,dec->mb_width); + } } @@ -698,7 +495,7 @@ int x, int y, int k, - VECTOR * ret_mv, + VECTOR * mv, int fcode, const int bound) { @@ -709,73 +506,48 @@ int range = (64 * scale_fac); VECTOR pmv; - VECTOR mv; + int mv_x, mv_y; pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); - mv.x = get_mv(bs, fcode); - mv.y = get_mv(bs, fcode); + mv_x = get_mv(bs, fcode); + mv_y = get_mv(bs, fcode); - DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv.x, mv.y, pmv.x, pmv.y); + DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv.x, pmv.y); - mv.x += pmv.x; - mv.y += pmv.y; + mv_x += pmv.x; + mv_y += pmv.y; - if (mv.x < low) { - mv.x += range; - } else if (mv.x > high) { - mv.x -= range; + if (mv_x < low) { + mv_x += range; + } else if (mv_x > high) { + mv_x -= range; } - if (mv.y < low) { - mv.y += range; - } else if (mv.y > high) { - mv.y -= range; + if (mv_y < low) { + mv_y += range; + } else if (mv_y > high) { + mv_y -= range; } - ret_mv->x = mv.x; - ret_mv->y = mv.y; -} - - - -static __inline int gmc_sanitize(int value, int quarterpel, int fcode) -{ - int length = 1 << (fcode+4); - - if (quarterpel) value *= 2; + mv->x = mv_x; + mv->y = mv_y; - if (value < -length) - return -length; - else if (value >= length) - return length-1; - else return value; } -/* for P_VOP set gmc_mv to NULL */ void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, - int reduced_resolution, int quant, int fcode, - int intra_dc_threshold, - VECTOR * gmc_mv) + int intra_dc_threshold) { uint32_t x, y; uint32_t bound; int cp_mb, st_mb; - uint32_t mb_width = dec->mb_width; - uint32_t mb_height = dec->mb_height; - - if (reduced_resolution) - { - mb_width = (dec->width + 31) / 32; - mb_height = (dec->height + 31) / 32; - } start_timer(); image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, @@ -784,28 +556,27 @@ bound = 0; - for (y = 0; y < mb_height; y++) { + for (y = 0; y < dec->mb_height; y++) { cp_mb = st_mb = 0; - for (x = 0; x < mb_width; x++) { + for (x = 0; x < dec->mb_width; x++) { MACROBLOCK *mb; - // skip stuffing + /* skip stuffing */ while (BitstreamShowBits(bs, 10) == 1) BitstreamSkip(bs, 10); if (check_resync_marker(bs, fcode - 1)) { - bound = read_video_packet_header(bs, dec, fcode - 1, - &quant, &fcode, NULL, &intra_dc_threshold); - x = bound % mb_width; - y = bound / mb_width; + bound = read_video_packet_header(bs, fcode - 1, &quant); + x = bound % dec->mb_width; + y = bound / dec->mb_width; } mb = &dec->mbs[y * dec->mb_width + x]; DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); - //if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded - if (!(BitstreamGetBit(bs))) // not_coded + /*if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) not_coded */ + if (!(BitstreamGetBit(bs))) /* not_coded */ { uint32_t mcbpc; uint32_t cbpc; @@ -813,7 +584,6 @@ uint32_t cbpy; uint32_t cbp; uint32_t intra; - int mcsel = 0; // mcsel: '0'=local motion, '1'=GMC cp_mb++; mcbpc = get_mcbpc_inter(bs); @@ -830,11 +600,6 @@ acpred_flag = BitstreamGetBit(bs); } - if (gmc_mv && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q)) - { - mcsel = BitstreamGetBit(bs); - } - cbpy = get_cbpy(bs, intra); DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); @@ -856,30 +621,24 @@ if (dec->interlacing) { if (cbp || intra) { mb->field_dct = BitstreamGetBit(bs); - DPRINTF(DPRINTF_MB,"decp: field_dct: %i", mb->field_dct); + DPRINTF(DPRINTF_DEBUG, "decp: field_dct: %d", mb->field_dct); } if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { mb->field_pred = BitstreamGetBit(bs); - DPRINTF(DPRINTF_MB, "decp: field_pred: %i", mb->field_pred); + DPRINTF(DPRINTF_DEBUG, "decp: field_pred: %d", mb->field_pred); if (mb->field_pred) { mb->field_for_top = BitstreamGetBit(bs); - DPRINTF(DPRINTF_MB,"decp: field_for_top: %i", mb->field_for_top); + DPRINTF(DPRINTF_DEBUG, "decp: field_for_top: %d", mb->field_for_top); mb->field_for_bot = BitstreamGetBit(bs); - DPRINTF(DPRINTF_MB,"decp: field_for_bot: %i", mb->field_for_bot); + DPRINTF(DPRINTF_DEBUG, "decp: field_for_bot: %d", mb->field_for_bot); } } } if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { - - if (mcsel) - { - mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = gmc_sanitize(gmc_mv[0].x, dec->quarterpel, fcode); - mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = gmc_sanitize(gmc_mv[0].y, dec->quarterpel, fcode); - - } else if (dec->interlacing && mb->field_pred) { + if (dec->interlacing && mb->field_pred) { get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], @@ -898,69 +657,65 @@ get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); - } else // MODE_INTRA, MODE_INTRA_Q + } else /* MODE_INTRA, MODE_INTRA_Q */ { mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, - intra_dc_threshold, bound, reduced_resolution); + intra_dc_threshold, bound); continue; } decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, - rounding, reduced_resolution); - - } - else if (gmc_mv) /* not coded S_VOP macroblock */ - { - mb->mode = MODE_NOT_CODED_GMC; - mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = gmc_sanitize(gmc_mv[0].x, dec->quarterpel, fcode); - mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = gmc_sanitize(gmc_mv[0].y, dec->quarterpel, fcode); - decoder_mbinter(dec, mb, x, y, 0, 0, bs, quant, rounding, reduced_resolution); - } - else /* not coded P_VOP macroblock */ + rounding); + } else /* not coded */ { - mb->mode = MODE_NOT_CODED; + DPRINTF(DPRINTF_DEBUG, "P-frame MB at (X,Y)=(%d,%d)", x, y); + mb->mode = MODE_NOT_CODED; mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; - // copy macroblock directly from ref to cur + + /* copy macroblock directly from ref to cur */ start_timer(); - if (reduced_resolution) - { - transfer32x32_copy(dec->cur.y + (32*y)*dec->edged_width + (32*x), - dec->refn[0].y + (32*y)*dec->edged_width + (32*x), - dec->edged_width); - - transfer16x16_copy(dec->cur.u + (16*y)*dec->edged_width/2 + (16*x), - dec->refn[0].u + (16*y)*dec->edged_width/2 + (16*x), - dec->edged_width/2); - - transfer16x16_copy(dec->cur.v + (16*y)*dec->edged_width/2 + (16*x), - dec->refn[0].v + (16*y)*dec->edged_width/2 + (16*x), - dec->edged_width/2); - } - else - { - transfer16x16_copy(dec->cur.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.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[0].v + (8*y)*dec->edged_width/2 + (8*x), - dec->edged_width/2); - } - + transfer8x8_copy(dec->cur.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[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[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[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[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[0].v + + (8 * y) * dec->edged_width / 2 + (8 * x), + dec->edged_width / 2); stop_transfer_timer(); - if(dec->out_frm && cp_mb > 0) { output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); cp_mb = 0; @@ -973,631 +728,7 @@ } } - -// add by MinChen -// decode B-frame motion vector -void -get_b_motion_vector(DECODER * dec, - Bitstream * bs, - int x, - int y, - VECTOR * mv, - int fcode, - const VECTOR pmv) -{ - int scale_fac = 1 << (fcode - 1); - int high = (32 * scale_fac) - 1; - int low = ((-32) * scale_fac); - int range = (64 * scale_fac); - - int mv_x, mv_y; - int pmv_x, pmv_y; - - pmv_x = pmv.x; - pmv_y = pmv.y; - - mv_x = get_mv(bs, fcode); - mv_y = get_mv(bs, fcode); - - mv_x += pmv_x; - mv_y += pmv_y; - - if (mv_x < low) { - mv_x += range; - } else if (mv_x > high) { - mv_x -= range; - } - - if (mv_y < low) { - mv_y += range; - } else if (mv_y > high) { - mv_y -= range; - } - - mv->x = mv_x; - mv->y = mv_y; -} - - -// add by MinChen -// decode an B-frame forward & backward inter macroblock -void -decoder_bf_mbinter(DECODER * dec, - const MACROBLOCK * pMB, - const uint32_t x_pos, - const uint32_t y_pos, - const uint32_t cbp, - Bitstream * bs, - const uint32_t quant, - const uint8_t ref) -{ - - DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); - DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); - - uint32_t stride = dec->edged_width; - uint32_t stride2 = stride / 2; - uint32_t next_block = stride * 8; - uint32_t i; - uint32_t iQuant = pMB->quant; - uint8_t *pY_Cur, *pU_Cur, *pV_Cur; - int uv_dx, uv_dy; - - pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); - pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); - pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); - - - if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { - uv_dx = pMB->mvs[0].x; - uv_dy = pMB->mvs[0].y; - - if (dec->quarterpel) - { - uv_dx /= 2; - uv_dy /= 2; - } - - uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; - uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; - } else { - int sum; - - if(dec->quarterpel) - sum = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2); - else - sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; - - uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; - - if(dec->quarterpel) - sum = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2); - else - sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; - - uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; - } - - start_timer(); - if(dec->quarterpel) { - interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); - } - else { - interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos, - pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); - interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos + 8, 16*y_pos, - pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); - interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos + 8, - pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); - interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos + 8, 16*y_pos + 8, - pMB->mvs[3].x, pMB->mvs[3].y, stride, 0); - } - - interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, - uv_dx, uv_dy, stride2, 0); - interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, - uv_dx, uv_dy, stride2, 0); - stop_comp_timer(); - - for (i = 0; i < 6; i++) { - int direction = dec->alternate_vertical_scan ? 2 : 0; - - if (cbp & (1 << (5 - i))) // coded - { - memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear - - start_timer(); - get_inter_block(bs, &block[i * 64], direction); - stop_coding_timer(); - - start_timer(); - if (dec->quant_type == 0) { - dequant_inter(&data[i * 64], &block[i * 64], iQuant); - } else { - dequant4_inter(&data[i * 64], &block[i * 64], iQuant); - } - stop_iquant_timer(); - - start_timer(); - idct(&data[i * 64]); - stop_idct_timer(); - } - } - - if (dec->interlacing && pMB->field_dct) { - next_block = stride; - stride *= 2; - } - - start_timer(); - if (cbp & 32) - transfer_16to8add(pY_Cur, &data[0 * 64], stride); - if (cbp & 16) - transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); - if (cbp & 8) - transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); - if (cbp & 4) - transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); - if (cbp & 2) - transfer_16to8add(pU_Cur, &data[4 * 64], stride2); - if (cbp & 1) - transfer_16to8add(pV_Cur, &data[5 * 64], stride2); - stop_transfer_timer(); -} - -// add by MinChen -// decode an B-frame direct & inter macroblock -void -decoder_bf_interpolate_mbinter(DECODER * dec, - IMAGE forward, - IMAGE backward, - const MACROBLOCK * pMB, - const uint32_t x_pos, - const uint32_t y_pos, - Bitstream * bs) -{ - - DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); - DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); - - uint32_t stride = dec->edged_width; - uint32_t stride2 = stride / 2; - uint32_t next_block = stride * 8; - uint32_t iQuant = pMB->quant; - int uv_dx, uv_dy; - int b_uv_dx, b_uv_dy; - uint32_t i; - uint8_t *pY_Cur, *pU_Cur, *pV_Cur; - const uint32_t cbp = pMB->cbp; - - pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); - pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); - pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); - - - if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { - uv_dx = pMB->mvs[0].x; - uv_dy = pMB->mvs[0].y; - - b_uv_dx = pMB->b_mvs[0].x; - b_uv_dy = pMB->b_mvs[0].y; - - if (dec->quarterpel) - { - uv_dx /= 2; - uv_dy /= 2; - - b_uv_dx /= 2; - b_uv_dy /= 2; - } - - uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; - uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; - - b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3]; - b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3]; - } else { - int sum; - - if(dec->quarterpel) - sum = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2); - else - sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; - - uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; - - if(dec->quarterpel) - sum = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2); - else - sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; - - uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; - - - if(dec->quarterpel) - sum = (pMB->b_mvs[0].x / 2) + (pMB->b_mvs[1].x / 2) + (pMB->b_mvs[2].x / 2) + (pMB->b_mvs[3].x / 2); - else - sum = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; - - b_uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; - - if(dec->quarterpel) - sum = (pMB->b_mvs[0].y / 2) + (pMB->b_mvs[1].y / 2) + (pMB->b_mvs[2].y / 2) + (pMB->b_mvs[3].y / 2); - else - sum = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; - - b_uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; - } - - - start_timer(); - if(dec->quarterpel) { - if((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) - interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); - else { - interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); - interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, - pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); - interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, - pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); - interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, - pMB->mvs[3].x, pMB->mvs[3].y, stride, 0); - } - } - else { - interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, - pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); - interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, - pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); - interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, - pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); - interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, - 16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, - 0); - } - - interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, - uv_dy, stride2, 0); - interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, - uv_dy, stride2, 0); - - - if(dec->quarterpel) { - if((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) - interpolate16x16_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); - else { - interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos, - pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); - interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, - pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0); - interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, - pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0); - interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, - dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, - pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0); - } - } - else { - interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, 16 * y_pos, - pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); - interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8, - 16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, - 0); - interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, - 16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, - stride, 0); - interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8, - 16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, - stride, 0); - } - - interpolate8x8_switch(dec->tmp.u, backward.u, 8 * x_pos, 8 * y_pos, - b_uv_dx, b_uv_dy, stride2, 0); - interpolate8x8_switch(dec->tmp.v, backward.v, 8 * x_pos, 8 * y_pos, - b_uv_dx, b_uv_dy, stride2, 0); - - interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos, - dec->cur.y + (16 * y_pos * stride) + 16 * x_pos, - dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos, - stride, 1, 8); - - interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8, - dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8, - dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos + 8, - stride, 1, 8); - - interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos, - dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos, - dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos, - stride, 1, 8); - - interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8, - dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8, - dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8, - stride, 1, 8); - - interpolate8x8_avg2(dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos, - dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos, - dec->tmp.u + (8 * y_pos * stride2) + 8 * x_pos, - stride2, 1, 8); - - interpolate8x8_avg2(dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos, - dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos, - dec->tmp.v + (8 * y_pos * stride2) + 8 * x_pos, - stride2, 1, 8); - - stop_comp_timer(); - - for (i = 0; i < 6; i++) { - int direction = dec->alternate_vertical_scan ? 2 : 0; - - if (cbp & (1 << (5 - i))) // coded - { - memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear - - start_timer(); - get_inter_block(bs, &block[i * 64], direction); - stop_coding_timer(); - - start_timer(); - if (dec->quant_type == 0) { - dequant_inter(&data[i * 64], &block[i * 64], iQuant); - } else { - dequant4_inter(&data[i * 64], &block[i * 64], iQuant); - } - stop_iquant_timer(); - - start_timer(); - idct(&data[i * 64]); - stop_idct_timer(); - } - } - - if (dec->interlacing && pMB->field_dct) { - next_block = stride; - stride *= 2; - } - - start_timer(); - if (cbp & 32) - transfer_16to8add(pY_Cur, &data[0 * 64], stride); - if (cbp & 16) - transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); - if (cbp & 8) - transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); - if (cbp & 4) - transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); - if (cbp & 2) - transfer_16to8add(pU_Cur, &data[4 * 64], stride2); - if (cbp & 1) - transfer_16to8add(pV_Cur, &data[5 * 64], stride2); - stop_transfer_timer(); -} - - -// add by MinChen -// for decode B-frame dbquant -int32_t __inline -get_dbquant(Bitstream * bs) -{ - if (!BitstreamGetBit(bs)) // '0' - return (0); - else if (!BitstreamGetBit(bs)) // '10' - return (-2); - else - return (2); // '11' -} - -// add by MinChen -// for decode B-frame mb_type -// bit ret_value -// 1 0 -// 01 1 -// 001 2 -// 0001 3 -int32_t __inline -get_mbtype(Bitstream * bs) -{ - int32_t mb_type; - - for (mb_type = 0; mb_type <= 3; mb_type++) { - if (BitstreamGetBit(bs)) - break; - } - - if (mb_type <= 3) - return (mb_type); - else - return (-1); -} - -void -decoder_bframe(DECODER * dec, - Bitstream * bs, - int quant, - int fcode_forward, - int fcode_backward) -{ - uint32_t x, y; - VECTOR mv; - const VECTOR zeromv = {0,0}; -#ifdef BFRAMES_DEC_DEBUG - FILE *fp; - static char first=0; -#define BFRAME_DEBUG if (!first && fp){ \ - fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ - } -#endif - - start_timer(); - image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, - dec->width, dec->height); - image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, - dec->width, dec->height); - stop_edges_timer(); - -#ifdef BFRAMES_DEC_DEBUG - if (!first){ - fp=fopen("C:\\XVIDDBG.TXT","w"); - } -#endif - - for (y = 0; y < dec->mb_height; y++) { - // Initialize Pred Motion Vector - dec->p_fmv = dec->p_bmv = zeromv; - for (x = 0; x < dec->mb_width; x++) { - MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; - MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; - - mv = - mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = - mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; - - // skip if the co-located P_VOP macroblock is not coded - // note: gmc+not_coded isn't skipped - - if (last_mb->mode == MODE_NOT_CODED) { - //DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); - mb->cbp = 0; -#ifdef BFRAMES_DEC_DEBUG - mb->mb_type = MODE_NOT_CODED; - BFRAME_DEBUG -#endif - mb->mb_type = MODE_FORWARD; - mb->quant = last_mb->quant; - //mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; - //mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; - - decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, mb->quant, 1); - continue; - } - - if (!BitstreamGetBit(bs)) { // modb=='0' - const uint8_t modb2 = BitstreamGetBit(bs); - - mb->mb_type = get_mbtype(bs); - - if (!modb2) { // modb=='00' - mb->cbp = BitstreamGetBits(bs, 6); - } else { - mb->cbp = 0; - } - if (mb->mb_type && mb->cbp) { - quant += get_dbquant(bs); - - if (quant > 31) { - quant = 31; - } else if (quant < 1) { - quant = 1; - } - } - } else { - mb->mb_type = MODE_DIRECT_NONE_MV; - mb->cbp = 0; - } - - mb->quant = quant; - mb->mode = MODE_INTER4V; - //DEBUG1("Switch bm_type=",mb->mb_type); - -#ifdef BFRAMES_DEC_DEBUG - BFRAME_DEBUG -#endif - - switch (mb->mb_type) { - case MODE_DIRECT: - get_b_motion_vector(dec, bs, x, y, &mv, 1, zeromv); - - case MODE_DIRECT_NONE_MV: - { - const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; - int i; - - for (i = 0; i < 4; i++) { - mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) - / TRD + mv.x); - mb->b_mvs[i].x = (int32_t) ((mv.x == 0) - ? ((TRB - TRD) * last_mb->mvs[i].x) - / TRD - : mb->mvs[i].x - last_mb->mvs[i].x); - mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) - / TRD + mv.y); - mb->b_mvs[i].y = (int32_t) ((mv.y == 0) - ? ((TRB - TRD) * last_mb->mvs[i].y) - / TRD - : mb->mvs[i].y - last_mb->mvs[i].y); - } - //DEBUG("B-frame Direct!\n"); - } - decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], - mb, x, y, bs); - break; - - case MODE_INTERPOLATE: - get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, - dec->p_fmv); - dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; - - get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], - fcode_backward, dec->p_bmv); - dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = - mb->b_mvs[3] = mb->b_mvs[0]; - - decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], - mb, x, y, bs); - //DEBUG("B-frame Bidir!\n"); - break; - - case MODE_BACKWARD: - get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, - dec->p_bmv); - dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; - - mb->mode = MODE_INTER; - decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); - //DEBUG("B-frame Backward!\n"); - break; - - case MODE_FORWARD: - get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, - dec->p_fmv); - dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; - - mb->mode = MODE_INTER; - decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); - //DEBUG("B-frame Forward!\n"); - break; - - default: - DPRINTF(DPRINTF_ERROR,"Not support B-frame mb_type = %i", mb->mb_type); - } - - } // end of FOR - } -#ifdef BFRAMES_DEC_DEBUG - if (!first){ - first=1; - if (fp) - fclose(fp); - } -#endif -} - -// swap two MACROBLOCK array +/* swap two MACROBLOCK array */ void mb_swap(MACROBLOCK ** mb1, MACROBLOCK ** mb2) @@ -1608,263 +739,76 @@ *mb2 = temp; } - -/* perform post processing if necessary, and output the image */ -void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs, - const XVID_DEC_FRAME * frame, int pp_disable) -{ - - if ((frame->general & (XVID_DEC_DEBLOCKY|XVID_DEC_DEBLOCKUV)) && !pp_disable) /* post process */ - { - /* note: image is stored to tmp */ - image_copy(&dec->tmp, img, dec->edged_width, dec->height); - image_deblock_rrv(&dec->tmp, dec->edged_width, - mbs, dec->mb_width, dec->mb_height, dec->mb_width, - 8, frame->general); - img = &dec->tmp; - } - - image_output(img, dec->width, dec->height, - dec->edged_width, frame->image, frame->stride, - frame->colorspace, dec->interlacing); -} - - int decoder_decode(DECODER * dec, - XVID_DEC_FRAME * frame, XVID_DEC_STATS * stats) + XVID_DEC_FRAME * frame) { Bitstream bs; uint32_t rounding; - uint32_t reduced_resolution; uint32_t quant; uint32_t fcode_forward; uint32_t fcode_backward; uint32_t intra_dc_threshold; - VECTOR gmc_mv[5]; uint32_t vop_type; - int success = 0; - int output = 0; - int seen_something = 0; start_global_timer(); - dec->low_delay_default = (frame->general & XVID_DEC_LOWDELAY); dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; - if ((frame->general & XVID_DEC_DISCONTINUITY)) - dec->frames = 0; - - if (frame->length < 0) /* decoder flush */ - { - /* if not decoding "low_delay/packed", and this isn't low_delay and - we have a reference frame, then outout the reference frame */ - if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) - { - decoder_output(dec, &dec->refn[0], dec->mbs, frame, dec->last_reduced_resolution); - output = 1; - } - - frame->length = 0; - if (stats) - { - stats->notify = output ? XVID_DEC_VOP : XVID_DEC_NOTHING; - stats->data.vop.time_base = (int)dec->time_base; - stats->data.vop.time_increment = 0; //XXX: todo - } - - emms(); - - stop_global_timer(); - return XVID_ERR_OK; - } - BitstreamInit(&bs, frame->bitstream, frame->length); - // XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's - if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f) - { - if (stats) - stats->notify = XVID_DEC_VOP; - frame->length = 1; - image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, - frame->image, frame->stride, frame->colorspace, dec->interlacing); - emms(); - return XVID_ERR_OK; - } + /* add by chenm001 */ + /* for support B-frame to reference last 2 frame */ + dec->frames++; + vop_type = + BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, + &fcode_backward, &intra_dc_threshold); + + dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; /* init pred vector to 0 */ + + switch (vop_type) { + case P_VOP: + decoder_pframe(dec, &bs, rounding, quant, fcode_forward, + intra_dc_threshold); + break; + + case I_VOP: + decoder_iframe(dec, &bs, quant, intra_dc_threshold); + break; + case B_VOP: + image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); + break; + case N_VOP: + /* when low_delay==0, N_VOP's should interpolate between the past and future frames */ + image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); + break; -repeat: - - vop_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution, - &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, gmc_mv); - - DPRINTF(DPRINTF_HEADER, "vop_type=%i, packed=%i, time=%i, time_pp=%i, time_bp=%i", - vop_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp); - - if (vop_type == - 1) - { - if (success) goto done; - emms(); + default: return XVID_ERR_FAIL; } - if (vop_type == -2 || vop_type == -3) - { - if (vop_type == -3) - decoder_resize(dec); - - if (stats) - { - stats->notify = XVID_DEC_VOL; - stats->data.vol.general = 0; - if (dec->interlacing) - stats->data.vol.general |= XVID_INTERLACING; - stats->data.vol.width = dec->width; - stats->data.vol.height = dec->height; - stats->data.vol.aspect_ratio = dec->aspect_ratio; - stats->data.vol.par_width = dec->par_width; - stats->data.vol.par_height = dec->par_height; - frame->length = BitstreamPos(&bs) / 8; - emms(); - return XVID_ERR_OK; - } - goto repeat; - } - - dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; // init pred vector to 0 - - - /* packed_mode: special-N_VOP treament */ - if (dec->packed_mode && vop_type == N_VOP) - { - if (dec->low_delay_default && dec->frames > 0) - { - decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, dec->last_reduced_resolution); - output = 1; - } - /* ignore otherwise */ - } - else if (vop_type != B_VOP) - { - switch(vop_type) - { - case I_VOP : - decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold); - break; - case P_VOP : - decoder_pframe(dec, &bs, rounding, reduced_resolution, quant, - fcode_forward, intra_dc_threshold, NULL); - break; - case S_VOP : - decoder_pframe(dec, &bs, rounding, reduced_resolution, quant, - fcode_forward, intra_dc_threshold, gmc_mv); - break; - case N_VOP : - image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); - break; - } - - if (reduced_resolution) - { - image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs, - (dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width, - 16, XVID_DEC_DEBLOCKY|XVID_DEC_DEBLOCKUV); - } + frame->length = BitstreamPos(&bs) / 8; - /* note: for packed_mode, output is performed when the special-N_VOP is decoded */ - if (!(dec->low_delay_default && dec->packed_mode)) - { - if (dec->low_delay) - { - decoder_output(dec, &dec->cur, dec->mbs, frame, reduced_resolution); - output = 1; - } - else if (dec->frames > 0) /* is the reference frame valid? */ - { - /* output the reference frame */ - decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, dec->last_reduced_resolution); - output = 1; - } - } + image_output(&dec->cur, dec->width, dec->height, dec->edged_width, + frame->image, frame->stride, frame->colorspace); + if (vop_type == I_VOP || vop_type == P_VOP) { image_swap(&dec->refn[0], &dec->refn[1]); image_swap(&dec->cur, &dec->refn[0]); - mb_swap(&dec->mbs, &dec->last_mbs); - dec->last_reduced_resolution = reduced_resolution; - - dec->frames++; - seen_something = 1; - - }else{ /* B_VOP */ - - if (dec->low_delay) - { - DPRINTF(DPRINTF_ERROR, "warning: bvop found in low_delay==1 stream"); - dec->low_delay = 1; - } - - if (dec->frames < 2) - { - /* attemping to decode a bvop without atleast 2 reference frames */ - image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, - "broken b-frame, mising ref frames"); - }else if (dec->time_pp <= dec->time_bp) { - /* this occurs when dx50_bvop_compatibility==0 sequences are - decoded in vfw. */ - image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, - "broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp); - }else{ - decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); - } - - decoder_output(dec, &dec->cur, dec->mbs, frame, reduced_resolution); - output = 1; - dec->frames++; - } - - BitstreamByteAlign(&bs); - /* low_delay_default mode: repeat in packed_mode */ - if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) - { - success = 1; - goto repeat; + /* swap MACROBLOCK */ + /* the Divx will not set the low_delay flage some times */ + /* so follow code will wrong to not swap at that time */ + /* this will broken bitstream! so I'm change it, */ + /* But that is not the best way! can anyone tell me how */ + /* to do another way? */ + /* 18-07-2002 MinChen */ + /*if (!dec->low_delay && vop_type == P_VOP) */ + if (vop_type == P_VOP) + mb_swap(&dec->mbs, &dec->last_mbs); } -done : - - /* low_delay_default mode: if we've gotten here without outputting anything, - then output the recently decoded frame, or print an error message */ - if (dec->low_delay_default && output == 0) - { - if (dec->packed_mode && seen_something) - { - /* output the recently decoded frame */ - decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, dec->last_reduced_resolution); - output = 1; - } - else - { - image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128); - image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, - "warning: nothing to output"); - image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64, - "bframe decoder lag"); - - decoder_output(dec, &dec->cur, NULL, frame, 1 /*disable pp*/); - } - } - - frame->length = BitstreamPos(&bs) / 8; - - if (stats) - { - stats->notify = output ? XVID_DEC_VOP : XVID_DEC_NOTHING; - stats->data.vop.time_base = (int)dec->time_base; - stats->data.vop.time_increment = 0; //XXX: todo - } - emms(); stop_global_timer();