--- decoder.c 2002/03/26 11:16:08 1.5 +++ decoder.c 2004/01/24 14:14:15 1.49.2.29 @@ -1,660 +1,1561 @@ -/************************************************************************** +/***************************************************************************** * - * XVID MPEG-4 VIDEO CODEC - * decoder main + * XVID MPEG-4 VIDEO CODEC + * - Decoder 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 + * 2002-2003 Peter Ross * - * 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: - * - * 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 + * $Id: decoder.c,v 1.49.2.29 2004/01/24 14:14:15 syskin Exp $ * - *************************************************************************/ + ****************************************************************************/ +#include #include -#include // memset +#include + +#ifdef BFRAMES_DEC_DEBUG + #define BFRAMES_DEC +#endif #include "xvid.h" #include "portab.h" +#include "global.h" #include "decoder.h" #include "bitstream/bitstream.h" #include "bitstream/mbcoding.h" -#include "quant/quant_h263.h" -#include "quant/quant_mpeg4.h" +#include "quant/quant.h" +#include "quant/quant_matrix.h" #include "dct/idct.h" #include "dct/fdct.h" #include "utils/mem_transfer.h" #include "image/interpolate8x8.h" -#include "utils/mbfunctions.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 "motion/gmc.h" #include "image/image.h" #include "image/colorspace.h" +#include "image/postprocessing.h" #include "utils/mem_align.h" -int decoder_create(XVID_DEC_PARAM * param) +static int +decoder_resize(DECODER * dec) { - DECODER * dec; - - dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); - if (dec == NULL) - { - return XVID_ERR_MEMORY; - } - param->handle = dec; - - dec->width = param->width; - dec->height = param->height; + /* 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); + + image_destroy(&dec->gmc, dec->edged_width, dec->edged_height); + + if (dec->last_mbs) + xvid_free(dec->last_mbs); + if (dec->mbs) + xvid_free(dec->mbs); + /* realloc */ 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; - - if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) - { + + if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { xvid_free(dec); 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; } - dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); - if (dec->mbs == NULL) - { + /* 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)) { + 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); + xvid_free(dec); + 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; } + if (image_create(&dec->gmc, dec->edged_width, dec->edged_height)) { + image_destroy(&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); + if (dec->mbs == NULL) { + 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); + xvid_free(dec); + return XVID_ERR_MEMORY; + } + memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); + + /* For skip MB flag */ + dec->last_mbs = + xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, + CACHE_LINE); + if (dec->last_mbs == NULL) { + xvid_free(dec->mbs); + 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); + xvid_free(dec); + return XVID_ERR_MEMORY; + } + + memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); + + return 0; +} + + +int +decoder_create(xvid_dec_create_t * create) +{ + DECODER *dec; + + if (XVID_VERSION_MAJOR(create->version) != 1) /* v1.x.x */ + return XVID_ERR_VERSION; + + dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); + if (dec == NULL) { + return XVID_ERR_MEMORY; + } + + memset(dec, 0, sizeof(DECODER)); + + dec->mpeg_quant_matrices = xvid_malloc(sizeof(uint16_t) * 64 * 8, CACHE_LINE); + if (dec->mpeg_quant_matrices == NULL) { + xvid_free(dec); + return XVID_ERR_MEMORY; + } + + create->handle = dec; + + dec->width = create->width; + dec->height = create->height; + + image_null(&dec->cur); + image_null(&dec->refn[0]); + image_null(&dec->refn[1]); + image_null(&dec->tmp); + image_null(&dec->qtmp); + + /* image based GMC */ + image_null(&dec->gmc); + + + dec->mbs = NULL; + dec->last_mbs = NULL; + init_timer(); - create_vlc_tables(); + init_postproc(&dec->postproc); + init_mpeg_matrix(dec->mpeg_quant_matrices); + + /* For B-frame support (used to save reference frame's time */ + dec->frames = 0; + 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); - return XVID_ERR_OK; + if (dec->fixed_dimensions) + return decoder_resize(dec); + else + return 0; } -int decoder_destroy(DECODER * dec) +int +decoder_destroy(DECODER * dec) { + xvid_free(dec->last_mbs); xvid_free(dec->mbs); - image_destroy(&dec->refn, dec->edged_width, dec->edged_height); + + /* image based GMC */ + image_destroy(&dec->gmc, 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->cur, dec->edged_width, dec->edged_height); + xvid_free(dec->mpeg_quant_matrices); xvid_free(dec); - destroy_vlc_tables(); - write_timer(); - return XVID_ERR_OK; + return 0; } - - -static const int32_t dquant_table[4] = -{ +static const int32_t dquant_table[4] = { -1, -2, 1, 2 }; - -// decode an intra macroblock - -void decoder_mbintra(DECODER * dec, - MACROBLOCK * pMB, - const uint32_t x_pos, - const uint32_t y_pos, - const uint32_t acpred_flag, - const uint32_t cbp, - Bitstream * bs, - const uint32_t quant, - const uint32_t intra_dc_threshold) +/* decode an intra macroblock */ +static void +decoder_mbintra(DECODER * dec, + MACROBLOCK * pMB, + const uint32_t x_pos, + const uint32_t y_pos, + const uint32_t acpred_flag, + const uint32_t cbp, + Bitstream * bs, + const uint32_t quant, + const uint32_t intra_dc_threshold, + const unsigned int bound, + const int reduced_resolution) { - CACHE_ALIGN int16_t block[6][64]; - CACHE_ALIGN int16_t data[6][64]; - const uint32_t stride = dec->edged_width; + 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; - pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); - pU_Cur = dec->cur.u + (y_pos << 3) * (stride >> 1) + (x_pos << 3); - pV_Cur = dec->cur.v + (y_pos << 3) * (stride >> 1) + (x_pos << 3); + 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); + } - memset(block, 0, sizeof(block)); // clear + memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */ - for (i = 0; i < 6; i++) - { + for (i = 0; i < 6; i++) { uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); int16_t predictors[8]; int start_coeff; start_timer(); - predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, block[i], iQuant, iDcScaler, predictors); - if (!acpred_flag) - { + predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], + iQuant, iDcScaler, predictors, bound); + if (!acpred_flag) { pMB->acpred_directions[i] = 0; } stop_prediction_timer(); - if (quant < intra_dc_threshold) - { + if (quant < intra_dc_threshold) { int dc_size; int dc_dif; - dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); - dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; + dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); + dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; - if (dc_size > 8) - { - BitstreamSkip(bs, 1); // marker + if (dc_size > 8) { + BitstreamSkip(bs, 1); /* marker */ } - - block[i][0] = dc_dif; + + block[i * 64 + 0] = dc_dif; start_coeff = 1; - } - else - { + + DPRINTF(XVID_DEBUG_COEFF,"block[0] %i\n", dc_dif); + } else { start_coeff = 0; } start_timer(); - if (cbp & (1 << (5-i))) // coded + if (cbp & (1 << (5 - i))) /* coded */ { - get_intra_block(bs, block[i], pMB->acpred_directions[i], start_coeff); + int direction = dec->alternate_vertical_scan ? + 2 : pMB->acpred_directions[i]; + + get_intra_block(bs, &block[i * 64], direction, start_coeff); } stop_coding_timer(); start_timer(); - add_acdc(pMB, i, block[i], iDcScaler, predictors); + add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors); stop_prediction_timer(); start_timer(); - if (dec->quant_type == 0) - { - dequant_intra(data[i], block[i], iQuant, iDcScaler); - } - else - { - dequant4_intra(data[i], block[i], iQuant, iDcScaler); + if (dec->quant_type == 0) { + dequant_h263_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices); + } else { + dequant_mpeg_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler, dec->mpeg_quant_matrices); } stop_iquant_timer(); start_timer(); - idct(data[i]); + idct(&data[i * 64]); stop_idct_timer(); + } - start_timer(); - if (dec->interlacing && pMB->field_dct) - { - MBFieldToFrame(data); + if (dec->interlacing && pMB->field_dct) { + next_block = stride; + stride *= 2; } - stop_interlacing_timer(); start_timer(); - transfer_16to8copy(pY_Cur, data[0], stride); - transfer_16to8copy(pY_Cur + 8, data[1], stride); - transfer_16to8copy(pY_Cur + 8 * stride, data[2], stride); - transfer_16to8copy(pY_Cur + 8 + 8 * stride, data[3], stride); - transfer_16to8copy(pU_Cur, data[4], stride / 2); - transfer_16to8copy(pV_Cur, data[5], stride / 2); + + 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); + } stop_transfer_timer(); } +static void +decoder_mb_decode(DECODER * dec, + const uint32_t cbp, + Bitstream * bs, + uint8_t * pY_Cur, + uint8_t * pU_Cur, + uint8_t * pV_Cur, + const int reduced_resolution, + const MACROBLOCK * pMB) +{ + DECLARE_ALIGNED_MATRIX(block, 1, 64, int16_t, CACHE_LINE); + DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); + int stride = dec->edged_width; + int next_block = stride * (reduced_resolution ? 16 : 8); + const int stride2 = stride/2; + int i; + const uint32_t iQuant = pMB->quant; + const int direction = dec->alternate_vertical_scan ? 2 : 0; + const quant_interFuncPtr dequant = dec->quant_type == 0 ? dequant_h263_inter : dequant_mpeg_inter; + for (i = 0; i < 6; i++) { + if (cbp & (1 << (5 - i))) { /* coded */ -#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 - -void decoder_mbinter(DECODER * dec, - const MACROBLOCK * pMB, - const uint32_t x_pos, - const uint32_t y_pos, - const uint32_t acpred_flag, - const uint32_t cbp, - Bitstream * bs, - const uint32_t quant, - const uint32_t rounding) -{ - CACHE_ALIGN int16_t block[6][64]; - CACHE_ALIGN int16_t data[6][64]; - - const uint32_t stride = dec->edged_width; - const uint32_t stride2 = dec->edged_width / 2; - uint32_t i; - uint32_t iQuant = pMB->quant; - uint8_t *pY_Cur, *pU_Cur, *pV_Cur; - int uv_dx, uv_dy; + memset(block, 0, 64 * sizeof(int16_t)); /* clear */ - pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); - pU_Cur = dec->cur.u + (y_pos << 3) * (stride >> 1) + (x_pos << 3); - pV_Cur = dec->cur.v + (y_pos << 3) * (stride >> 1) + (x_pos << 3); + start_timer(); + get_inter_block(bs, block, direction); + stop_coding_timer(); - if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) - { - uv_dx = pMB->mvs[0].x; - uv_dy = pMB->mvs[0].y; + start_timer(); + dequant(&data[i * 64], block, iQuant, dec->mpeg_quant_matrices); + stop_iquant_timer(); - uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; - uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; + start_timer(); + idct(&data[i * 64]); + stop_idct_timer(); + } } - else - { - int sum; - sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; - uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); - sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; - uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); + if (dec->interlacing && pMB->field_dct) { + next_block = stride; + stride *= 2; } 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); - stop_comp_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); + } + stop_transfer_timer(); +} - for (i = 0; i < 6; i++) - { - if (cbp & (1 << (5-i))) // coded - { - memset(block[i], 0, 64 * sizeof(int16_t)); // clear +/* decode an inter macroblock */ +static void +decoder_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 rounding, + const int reduced_resolution, + const int ref) +{ + uint32_t stride = dec->edged_width; + uint32_t stride2 = stride / 2; + uint32_t i; - start_timer(); - get_inter_block(bs, block[i]); - stop_coding_timer(); + uint8_t *pY_Cur, *pU_Cur, *pV_Cur; - start_timer(); - if (dec->quant_type == 0) - { - dequant_inter(data[i], block[i], iQuant); - } - else - { - dequant4_inter(data[i], block[i], iQuant); - } - stop_iquant_timer(); + int uv_dx, uv_dy; + VECTOR mv[4]; /* local copy of mvs */ - start_timer(); - idct(data[i]); - stop_idct_timer(); + 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]; } start_timer(); - if (pMB->field_dct) - { - MBFieldToFrame(data); + + if (pMB->mode != MODE_INTER4V) { /* INTER, INTER_Q, NOT_CODED, FORWARD, BACKWARD */ + + 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]; + + 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); + else 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, + mv[0].x, mv[0].y, stride, rounding); + else + interpolate16x16_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos, + mv[0].x, mv[0].y, stride, rounding); + + } else { /* MODE_INTER4V */ + + if(dec->quarterpel) { + uv_dx = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2); + uv_dy = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2); + } else { + uv_dx = mv[0].x + mv[1].x + mv[2].x + mv[3].x; + uv_dy = mv[0].y + mv[1].y + mv[2].y + mv[3].y; + } + + uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf]; + uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf]; + + 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); + + } 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); + } } - stop_interlacing_timer(); + + /* chroma */ + if (reduced_resolution) { + 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 { + interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, + uv_dx, uv_dy, stride2, rounding); + interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, + uv_dx, uv_dy, stride2, rounding); + } + + stop_comp_timer(); + + if (cbp) + decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, + reduced_resolution, pMB); +} + +static void +decoder_mbgmc(DECODER * dec, + MACROBLOCK * const pMB, + const uint32_t x_pos, + const uint32_t y_pos, + const uint32_t fcode, + const uint32_t cbp, + Bitstream * bs, + const uint32_t rounding) +{ + const uint32_t stride = dec->edged_width; + const uint32_t stride2 = stride / 2; + + uint8_t *const pY_Cur=dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); + uint8_t *const pU_Cur=dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); + uint8_t *const pV_Cur=dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); + + NEW_GMC_DATA * gmc_data = &dec->new_gmc_data; + + pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv; start_timer(); - if (cbp & 32) - transfer_16to8add(pY_Cur, data[0], stride); - if (cbp & 16) - transfer_16to8add(pY_Cur + 8, data[1], stride); - if (cbp & 8) - transfer_16to8add(pY_Cur + 8 * stride, data[2], stride); - if (cbp & 4) - transfer_16to8add(pY_Cur + 8 + 8 * stride, data[3], stride); - if (cbp & 2) - transfer_16to8add(pU_Cur, data[4], stride / 2); - if (cbp & 1) - transfer_16to8add(pV_Cur, data[5], stride / 2); + +/* this is where the calculations are done */ + + gmc_data->predict_16x16(gmc_data, + dec->cur.y + y_pos*16*stride + x_pos*16, dec->refn[0].y, + stride, stride, x_pos, y_pos, rounding); + + gmc_data->predict_8x8(gmc_data, + dec->cur.u + y_pos*8*stride2 + x_pos*8, dec->refn[0].u, + dec->cur.v + y_pos*8*stride2 + x_pos*8, dec->refn[0].v, + stride2, stride2, x_pos, y_pos, rounding); + + gmc_data->get_average_mv(gmc_data, &pMB->amv, x_pos, y_pos, dec->quarterpel); + + pMB->amv.x = gmc_sanitize(pMB->amv.x, dec->quarterpel, fcode); + pMB->amv.y = gmc_sanitize(pMB->amv.y, dec->quarterpel, fcode); + + pMB->mvs[0] = pMB->mvs[1] = pMB->mvs[2] = pMB->mvs[3] = pMB->amv; + stop_transfer_timer(); + + if (cbp) + decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB); + } -void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) +static 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; - for (y = 0; y < dec->mb_height; y++) - { - for (x = 0; x < dec->mb_width; x++) - { - MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; + 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++) { + MACROBLOCK *mb; uint32_t mcbpc; uint32_t cbpc; uint32_t acpred_flag; uint32_t cbpy; uint32_t cbp; + while (BitstreamShowBits(bs, 9) == 1) + BitstreamSkip(bs, 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; + } + mb = &dec->mbs[y * dec->mb_width + x]; + + DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32)); + mcbpc = get_mcbpc_intra(bs); mb->mode = mcbpc & 7; cbpc = (mcbpc >> 4); acpred_flag = BitstreamGetBit(bs); - if (mb->mode == MODE_STUFFING) - { - DEBUG("-- STUFFING ?"); - continue; - } - cbpy = get_cbpy(bs, 1); cbp = (cbpy << 2) | cbpc; - if (mb->mode == MODE_INTRA_Q) - { - quant += dquant_table[BitstreamGetBits(bs,2)]; - if (quant > 31) - { + if (mb->mode == MODE_INTRA_Q) { + quant += dquant_table[BitstreamGetBits(bs, 2)]; + if (quant > 31) { quant = 31; - } - else if (quant < 1) - { + } else if (quant < 1) { quant = 1; } } mb->quant = quant; + mb->mvs[0].x = mb->mvs[0].y = + mb->mvs[1].x = mb->mvs[1].y = + mb->mvs[2].x = mb->mvs[2].y = + mb->mvs[3].x = mb->mvs[3].y =0; - if (dec->interlacing) - { + if (dec->interlacing) { mb->field_dct = BitstreamGetBit(bs); - DEBUG1("deci: field_dct: ", mb->field_dct); + DPRINTF(XVID_DEBUG_MB,"deci: field_dct: %i\n", mb->field_dct); } - decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); + decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, + intra_dc_threshold, bound, reduced_resolution); + } + if(dec->out_frm) + output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width); } + } -void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) +static void +get_motion_vector(DECODER * dec, + Bitstream * bs, + int x, + int y, + int k, + VECTOR * ret_mv, + int fcode, + const int bound) +{ + + const int scale_fac = 1 << (fcode - 1); + const int high = (32 * scale_fac) - 1; + const int low = ((-32) * scale_fac); + const int range = (64 * scale_fac); + + const VECTOR pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); + VECTOR mv; + + mv.x = get_mv(bs, fcode); + mv.y = get_mv(bs, fcode); + + DPRINTF(XVID_DEBUG_MV,"mv_diff (%i,%i) pred (%i,%i) result (%i,%i)\n", 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.y < low) { + mv.y += range; + } else if (mv.y > high) { + mv.y -= range; + } + + ret_mv->x = mv.x; + ret_mv->y = mv.y; +} + +/* for P_VOP set gmc_warp to NULL */ +static void +decoder_pframe(DECODER * dec, + Bitstream * bs, + int rounding, + int reduced_resolution, + int quant, + int fcode, + int intra_dc_threshold, + const WARPPOINTS *const gmc_warp) { - int scale_fac = 1 << (fcode - 1); - int high = (32 * scale_fac) - 1; - int low = ((-32) * scale_fac); - int range = (64 * scale_fac); + 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, + dec->width, dec->height); + stop_edges_timer(); + + if (gmc_warp) { + /* accuracy: 0==1/2, 1=1/4, 2=1/8, 3=1/16 */ + generate_GMCparameters( dec->sprite_warping_points, + dec->sprite_warping_accuracy, gmc_warp, + dec->width, dec->height, &dec->new_gmc_data); + + /* image warping is done block-based in decoder_mbgmc(), now */ + } + + bound = 0; + + for (y = 0; y < mb_height; y++) { + cp_mb = st_mb = 0; + for (x = 0; x < mb_width; x++) { + MACROBLOCK *mb; + + /* 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; + } + mb = &dec->mbs[y * dec->mb_width + x]; + + DPRINTF(XVID_DEBUG_MB, "macroblock (%i,%i) %08x\n", x, y, BitstreamShowBits(bs, 32)); + + if (!(BitstreamGetBit(bs))) { /* block _is_ coded */ + uint32_t mcbpc, cbpc, cbpy, cbp; + uint32_t intra, acpred_flag = 0; + int mcsel = 0; /* mcsel: '0'=local motion, '1'=GMC */ + + cp_mb++; + mcbpc = get_mcbpc_inter(bs); + mb->mode = mcbpc & 7; + cbpc = (mcbpc >> 4); + + DPRINTF(XVID_DEBUG_MB, "mode %i\n", mb->mode); + DPRINTF(XVID_DEBUG_MB, "cbpc %i\n", cbpc); + + intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); + + if (gmc_warp && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q)) + mcsel = BitstreamGetBit(bs); + else if (intra) + acpred_flag = BitstreamGetBit(bs); + + cbpy = get_cbpy(bs, intra); + DPRINTF(XVID_DEBUG_MB, "cbpy %i mcsel %i \n", cbpy,mcsel); + + cbp = (cbpy << 2) | cbpc; + + if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { + int dquant = dquant_table[BitstreamGetBits(bs, 2)]; + DPRINTF(XVID_DEBUG_MB, "dquant %i\n", dquant); + quant += dquant; + if (quant > 31) { + quant = 31; + } else if (quant < 1) { + quant = 1; + } + DPRINTF(XVID_DEBUG_MB, "quant %i\n", quant); + } + mb->quant = quant; + + if (dec->interlacing) { + if ((cbp || intra) && !mcsel) { + mb->field_dct = BitstreamGetBit(bs); + DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct); + } - VECTOR pmv[4]; - uint32_t psad[4]; + if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { + mb->field_pred = BitstreamGetBit(bs); + DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred); - int mv_x, mv_y; - int pmv_x, pmv_y; + if (mb->field_pred) { + mb->field_for_top = BitstreamGetBit(bs); + DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top); + mb->field_for_bot = BitstreamGetBit(bs); + DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot); + } + } + } + if (mcsel) { + decoder_mbgmc(dec, mb, x, y, fcode, cbp, bs, rounding); + continue; - get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); + } else if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { - pmv_x = pmv[0].x; - pmv_y = pmv[0].y; + 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], fcode, bound); + } else { + get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); + mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; + } + } else if (mb->mode == MODE_INTER4V ) { + get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); + 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 */ + 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); + continue; + } - mv_x = get_mv(bs, fcode); - mv_y = get_mv(bs, fcode); - - mv_x += pmv_x; - mv_y += pmv_y; + decoder_mbinter(dec, mb, x, y, cbp, bs, + rounding, reduced_resolution, 0); + + } else if (gmc_warp) { /* a not coded S(GMC)-VOP macroblock */ + mb->mode = MODE_NOT_CODED_GMC; + mb->quant = quant; + decoder_mbgmc(dec, mb, x, y, fcode, 0x00, bs, rounding); + + 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; + } + st_mb = x+1; + } else { /* not coded P_VOP macroblock */ + mb->mode = MODE_NOT_CODED; + mb->quant = quant; + + 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_mbinter(dec, mb, x, y, 0, bs, + rounding, reduced_resolution, 0); + + 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; + } + st_mb = x+1; + } + } + + if(dec->out_frm && cp_mb > 0) + output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); + } +} + + +/* decode B-frame motion vector */ +static void +get_b_motion_vector(Bitstream * bs, + VECTOR * mv, + int fcode, + const VECTOR pmv) +{ + const int scale_fac = 1 << (fcode - 1); + const int high = (32 * scale_fac) - 1; + const int low = ((-32) * scale_fac); + const int range = (64 * scale_fac); + + int mv_x = get_mv(bs, fcode); + int 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; +} + +/* decode an B-frame direct & interpolate macroblock */ +static 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, + const int direct) +{ + uint32_t stride = dec->edged_width; + uint32_t stride2 = stride / 2; + int uv_dx, uv_dy; + int b_uv_dx, b_uv_dy; + 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 (!direct) { + 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 { + if(dec->quarterpel) { + uv_dx = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2); + uv_dy = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2); + b_uv_dx = (pMB->b_mvs[0].x / 2) + (pMB->b_mvs[1].x / 2) + (pMB->b_mvs[2].x / 2) + (pMB->b_mvs[3].x / 2); + b_uv_dy = (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 { + uv_dx = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; + uv_dy = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; + b_uv_dx = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; + b_uv_dy = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; + } + + uv_dx = (uv_dx >> 3) + roundtab_76[uv_dx & 0xf]; + uv_dy = (uv_dy >> 3) + roundtab_76[uv_dy & 0xf]; + b_uv_dx = (b_uv_dx >> 3) + roundtab_76[b_uv_dx & 0xf]; + b_uv_dy = (b_uv_dy >> 3) + roundtab_76[b_uv_dy & 0xf]; + } + + start_timer(); + if(dec->quarterpel) { + if(!direct) { + 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(!direct) { + 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(); + + if (cbp) + decoder_mb_decode(dec, cbp, bs, pY_Cur, pU_Cur, pV_Cur, 0, pMB); +} + +/* for decode B-frame dbquant */ +static __inline int32_t +get_dbquant(Bitstream * bs) +{ + if (!BitstreamGetBit(bs)) /* '0' */ + return (0); + else if (!BitstreamGetBit(bs)) /* '10' */ + return (-2); + else /* '11' */ + return (2); } +/* + * decode B-frame mb_type + * bit ret_value + * 1 0 + * 01 1 + * 001 2 + * 0001 3 + */ +static int32_t __inline +get_mbtype(Bitstream * bs) +{ + int32_t mb_type; + + for (mb_type = 0; mb_type <= 3; mb_type++) + if (BitstreamGetBit(bs)) + return (mb_type); + + return -1; +} -void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) +static 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}; + const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; + int i; - 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); + image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, + dec->width, dec->height); stop_edges_timer(); - for (y = 0; y < dec->mb_height; y++) - { - for (x = 0; x < dec->mb_width; x++) - { - MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; + 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]; + const int fcode_max = (fcode_forward>fcode_backward) ? fcode_forward : fcode_backward; + uint32_t intra_dc_threshold; /* fake variable */ + + if (check_resync_marker(bs, fcode_max - 1)) { + int bound = read_video_packet_header(bs, dec, fcode_max - 1, &quant, + &fcode_forward, &fcode_backward, &intra_dc_threshold); + x = bound % dec->mb_width; + y = bound / dec->mb_width; + /* reset predicted macroblocks */ + dec->p_fmv = dec->p_bmv = zeromv; + } - if (!BitstreamGetBit(bs)) // not_coded - { - uint32_t mcbpc; - uint32_t cbpc; - uint32_t acpred_flag; - uint32_t cbpy; - uint32_t cbp; - uint32_t intra; + 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; + mb->quant = quant; - mcbpc = get_mcbpc_inter(bs); - mb->mode = mcbpc & 7; - cbpc = (mcbpc >> 4); - acpred_flag = 0; + /* + * skip if the co-located P_VOP macroblock is not coded + * if not codec in co-located S_VOP macroblock is _not_ + * automatically skipped + */ + + if (last_mb->mode == MODE_NOT_CODED) { + mb->cbp = 0; + mb->mode = MODE_FORWARD; + decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1); + continue; + } - intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); - - if (intra) - { - acpred_flag = BitstreamGetBit(bs); - } + if (!BitstreamGetBit(bs)) { /* modb=='0' */ + const uint8_t modb2 = BitstreamGetBit(bs); - if (mb->mode == MODE_STUFFING) - { - DEBUG("-- STUFFING ?"); - continue; - } + mb->mode = get_mbtype(bs); - cbpy = get_cbpy(bs, intra); - cbp = (cbpy << 2) | cbpc; + if (!modb2) /* modb=='00' */ + mb->cbp = BitstreamGetBits(bs, 6); + else + mb->cbp = 0; - if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) - { - quant += dquant_table[BitstreamGetBits(bs,2)]; + if (mb->mode && mb->cbp) { + quant += get_dbquant(bs); if (quant > 31) - { quant = 31; - } - else if (mb->quant < 1) - { + else if (quant < 1) quant = 1; - } } mb->quant = quant; - if (dec->interlacing) - { - mb->field_dct = BitstreamGetBit(bs); - DEBUG1("decp: field_dct: ", mb->field_dct); + if (dec->interlacing) { + if (mb->cbp) { + mb->field_dct = BitstreamGetBit(bs); + DPRINTF(XVID_DEBUG_MB,"decp: field_dct: %i\n", mb->field_dct); + } - if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) - { + if (mb->mode) { mb->field_pred = BitstreamGetBit(bs); - DEBUG1("decp: field_pred: ", mb->field_pred); + DPRINTF(XVID_DEBUG_MB, "decp: field_pred: %i\n", mb->field_pred); - if (mb->field_pred) - { + if (mb->field_pred) { mb->field_for_top = BitstreamGetBit(bs); - DEBUG1("decp: field_for_top: ", mb->field_for_top); + DPRINTF(XVID_DEBUG_MB,"decp: field_for_top: %i\n", mb->field_for_top); mb->field_for_bot = BitstreamGetBit(bs); - DEBUG1("decp: field_for_bot: ", mb->field_for_bot); + DPRINTF(XVID_DEBUG_MB,"decp: field_for_bot: %i\n", mb->field_for_bot); } } } - if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) - { - if (dec->interlacing && mb->field_pred) - { - get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); - get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); - } - else - { - get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); - 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; - } - } - else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) - { - get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); - get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); - get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); - get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); - } - 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); - continue; + } else { + mb->mode = MODE_DIRECT_NONE_MV; + mb->cbp = 0; + } + + switch (mb->mode) { + case MODE_DIRECT: + get_b_motion_vector(bs, &mv, 1, zeromv); + + case MODE_DIRECT_NONE_MV: + 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); } - decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); - } - else // not coded - { + decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], + mb, x, y, bs, 1); + break; - 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 + case MODE_INTERPOLATE: + get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv); + dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; - start_timer(); + get_b_motion_vector(bs, &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]; - transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), - dec->refn.y + (16*y)*dec->edged_width + (16*x), - dec->edged_width); + decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], + mb, x, y, bs, 0); + break; - 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->edged_width); + case MODE_BACKWARD: + get_b_motion_vector(bs, &mb->mvs[0], fcode_backward, dec->p_bmv); + dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; - 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->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->edged_width); + decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 0); + break; - 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->edged_width/2); + case MODE_FORWARD: + get_b_motion_vector(bs, &mb->mvs[0], fcode_forward, dec->p_fmv); + dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; - 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->edged_width/2); + decoder_mbinter(dec, mb, x, y, mb->cbp, bs, 0, 0, 1); + break; - stop_transfer_timer(); + default: + DPRINTF(XVID_DEBUG_ERROR,"Not supported B-frame mb_type = %i\n", mb->mode); } - } + } /* End of for */ + } +} + +/* perform post processing if necessary, and output the image */ +void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs, + xvid_dec_frame_t * frame, xvid_dec_stats_t * stats, + int coding_type, int quant) +{ + if (dec->cartoon_mode) + frame->general &= ~XVID_FILMEFFECT; + + if (frame->general & (XVID_DEBLOCKY|XVID_DEBLOCKUV|XVID_FILMEFFECT) && mbs != NULL) /* post process */ + { + /* note: image is stored to tmp */ + image_copy(&dec->tmp, img, dec->edged_width, dec->height); + image_postproc(&dec->postproc, &dec->tmp, dec->edged_width, + mbs, dec->mb_width, dec->mb_height, dec->mb_width, + frame->general, dec->frames, (coding_type == B_VOP)); + img = &dec->tmp; + } + + image_output(img, dec->width, dec->height, + dec->edged_width, (uint8_t**)frame->output.plane, frame->output.stride, + frame->output.csp, dec->interlacing); + + if (stats) { + stats->type = coding2type(coding_type); + stats->data.vop.time_base = (int)dec->time_base; + stats->data.vop.time_increment = 0; /* XXX: todo */ } } -int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) + +int +decoder_decode(DECODER * dec, + xvid_dec_frame_t * frame, xvid_dec_stats_t * stats) { + Bitstream bs; uint32_t rounding; + uint32_t reduced_resolution; uint32_t quant; - uint32_t fcode; + uint32_t fcode_forward; + uint32_t fcode_backward; uint32_t intra_dc_threshold; + WARPPOINTS gmc_warp; + int coding_type; + int success, output, seen_something; + + if (XVID_VERSION_MAJOR(frame->version) != 1 || (stats && XVID_VERSION_MAJOR(stats->version) != 1)) /* v1.x.x */ + return XVID_ERR_VERSION; start_global_timer(); - + + dec->low_delay_default = (frame->general & XVID_LOWDELAY); + if ((frame->general & XVID_DISCONTINUITY)) + dec->frames = 0; + dec->out_frm = (frame->output.csp == XVID_CSP_SLICE) ? &frame->output : NULL; + + if (frame->length < 0) { /* decoder flush */ + int ret; + /* 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->last_mbs, frame, stats, dec->last_coding_type, quant); + dec->frames = 0; + ret = 0; + } else { + if (stats) stats->type = XVID_TYPE_NOTHING; + ret = XVID_ERR_END; + } + + emms(); + stop_global_timer(); + return ret; + } + BitstreamInit(&bs, frame->bitstream, frame->length); - switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) + /* XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's */ + if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f) { - case P_VOP : - decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); - break; - - case I_VOP : - //DEBUG1("",intra_dc_threshold); - decoder_iframe(dec, &bs, quant, intra_dc_threshold); - break; - - case B_VOP : // ignore - break; - - case N_VOP : // vop not coded - break; + image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, + (uint8_t**)frame->output.plane, frame->output.stride, frame->output.csp, dec->interlacing); + if (stats) stats->type = XVID_TYPE_NOTHING; + emms(); + return 1; /* one byte consumed */ + } - default : - return XVID_ERR_FAIL; + success = 0; + output = 0; + seen_something = 0; + +repeat: + + coding_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution, + &quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, &gmc_warp); + + DPRINTF(XVID_DEBUG_HEADER, "coding_type=%i, packed=%i, time=%lli, time_pp=%i, time_bp=%i\n", + coding_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp); + + if (coding_type == -1) { /* nothing */ + if (success) goto done; + if (stats) stats->type = XVID_TYPE_NOTHING; + emms(); + return BitstreamPos(&bs)/8; } - frame->length = BitstreamPos(&bs) / 8; + if (coding_type == -2 || coding_type == -3) { /* vol and/or resize */ - start_timer(); - image_output(&dec->cur, dec->width, dec->height, dec->edged_width, - frame->image, frame->stride, frame->colorspace); - stop_conv_timer(); - - emms(); + if (coding_type == -3) + decoder_resize(dec); + + if (stats) { + stats->type = XVID_TYPE_VOL; + stats->data.vol.general = 0; + /*XXX: if (dec->interlacing) + stats->data.vol.general |= ++INTERLACING; */ + stats->data.vol.width = dec->width; + stats->data.vol.height = dec->height; + stats->data.vol.par = dec->aspect_ratio; + stats->data.vol.par_width = dec->par_width; + stats->data.vol.par_height = dec->par_height; + emms(); + return BitstreamPos(&bs)/8; /* number of bytes consumed */ + } + 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 && coding_type == N_VOP) { + if (dec->low_delay_default && dec->frames > 0) { + decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, stats, dec->last_coding_type, quant); + output = 1; + } + /* ignore otherwise */ + } else if (coding_type != B_VOP) { + switch(coding_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_warp); + break; + case N_VOP : + /* XXX: not_coded vops are not used for forward prediction */ + /* we should not swap(last_mbs,mbs) */ + image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); + SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); /* it will be swapped back */ + 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, 0); + } + + /* 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, stats, coding_type, quant); + 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, stats, dec->last_coding_type, quant); + output = 1; + } + } + + image_swap(&dec->refn[0], &dec->refn[1]); + image_swap(&dec->cur, &dec->refn[0]); + SWAP(MACROBLOCK *, dec->mbs, dec->last_mbs); + dec->last_reduced_resolution = reduced_resolution; + dec->last_coding_type = coding_type; + + dec->frames++; + seen_something = 1; + + } else { /* B_VOP */ + + if (dec->low_delay) { + DPRINTF(XVID_DEBUG_ERROR, "warning: bvop found in low_delay==1 stream\n"); + 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"); + stats->type = XVID_TYPE_NOTHING; + } 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); + stats->type = XVID_TYPE_NOTHING; + } else { + decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); + decoder_output(dec, &dec->cur, dec->mbs, frame, stats, coding_type, quant); + } + + 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; + } + +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, stats, dec->last_coding_type, quant); + } 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, stats, P_VOP, quant); + if (stats) stats->type = XVID_TYPE_NOTHING; + } + } + + emms(); stop_global_timer(); - return XVID_ERR_OK; + return BitstreamPos(&bs) / 8; /* number of bytes consumed */ }