2001-07-22 16:18:56 +02:00
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/*
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2003-03-06 12:32:04 +01:00
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* H.263 decoder
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2002-05-26 00:45:33 +02:00
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* Copyright (c) 2001 Fabrice Bellard.
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2004-01-10 17:04:55 +01:00
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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2001-07-22 16:18:56 +02:00
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*
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2002-05-26 00:45:33 +02:00
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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2001-07-22 16:18:56 +02:00
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*
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2002-05-26 00:45:33 +02:00
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* This library is distributed in the hope that it will be useful,
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2001-07-22 16:18:56 +02:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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2002-05-26 00:45:33 +02:00
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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2001-07-22 16:18:56 +02:00
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*
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2002-05-26 00:45:33 +02:00
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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2006-01-12 23:43:26 +01:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2001-07-22 16:18:56 +02:00
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*/
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2005-12-17 19:14:38 +01:00
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2003-03-06 12:32:04 +01:00
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/**
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* @file h263dec.c
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* H.263 decoder.
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*/
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2005-12-17 19:14:38 +01:00
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2001-07-22 16:18:56 +02:00
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#include "avcodec.h"
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2002-05-19 01:03:29 +02:00
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#include "dsputil.h"
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2001-07-22 16:18:56 +02:00
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#include "mpegvideo.h"
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//#define DEBUG
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2002-05-17 00:01:30 +02:00
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//#define PRINT_FRAME_TIME
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2001-07-22 16:18:56 +02:00
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2002-12-28 00:51:46 +01:00
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int ff_h263_decode_init(AVCodecContext *avctx)
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2001-07-22 16:18:56 +02:00
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{
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MpegEncContext *s = avctx->priv_data;
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2001-08-12 02:52:37 +02:00
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2001-08-15 15:09:47 +02:00
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s->avctx = avctx;
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2001-07-22 16:18:56 +02:00
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s->out_format = FMT_H263;
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2004-09-27 13:50:56 +02:00
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s->width = avctx->coded_width;
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s->height = avctx->coded_height;
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2002-05-22 01:13:57 +02:00
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s->workaround_bugs= avctx->workaround_bugs;
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2001-07-22 16:18:56 +02:00
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2002-10-13 15:16:04 +02:00
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// set defaults
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2004-03-16 17:11:29 +01:00
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MPV_decode_defaults(s);
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2002-10-13 15:16:04 +02:00
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s->quant_precision=5;
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s->decode_mb= ff_h263_decode_mb;
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2002-12-09 01:29:17 +01:00
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s->low_delay= 1;
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2002-12-29 23:20:03 +01:00
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avctx->pix_fmt= PIX_FMT_YUV420P;
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2003-10-17 20:56:01 +02:00
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s->unrestricted_mv= 1;
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2002-10-13 15:16:04 +02:00
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2001-07-22 16:18:56 +02:00
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/* select sub codec */
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switch(avctx->codec->id) {
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case CODEC_ID_H263:
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2003-11-30 15:35:35 +01:00
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s->unrestricted_mv= 0;
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2001-07-22 16:18:56 +02:00
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break;
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2001-08-15 15:09:47 +02:00
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case CODEC_ID_MPEG4:
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2003-12-03 02:16:35 +01:00
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s->decode_mb= ff_mpeg4_decode_mb;
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2001-07-22 16:18:56 +02:00
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s->time_increment_bits = 4; /* default value for broken headers */
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s->h263_pred = 1;
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2002-12-09 01:29:17 +01:00
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s->low_delay = 0; //default, might be overriden in the vol header during header parsing
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2001-07-22 16:18:56 +02:00
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break;
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2002-04-05 06:09:04 +02:00
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case CODEC_ID_MSMPEG4V1:
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2001-07-22 16:18:56 +02:00
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s->h263_msmpeg4 = 1;
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s->h263_pred = 1;
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2002-04-05 06:09:04 +02:00
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s->msmpeg4_version=1;
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break;
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case CODEC_ID_MSMPEG4V2:
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s->h263_msmpeg4 = 1;
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s->h263_pred = 1;
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s->msmpeg4_version=2;
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break;
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case CODEC_ID_MSMPEG4V3:
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s->h263_msmpeg4 = 1;
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s->h263_pred = 1;
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s->msmpeg4_version=3;
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2001-07-22 16:18:56 +02:00
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break;
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2002-04-07 00:29:37 +02:00
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case CODEC_ID_WMV1:
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s->h263_msmpeg4 = 1;
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s->h263_pred = 1;
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s->msmpeg4_version=4;
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break;
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2002-06-18 02:46:02 +02:00
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case CODEC_ID_WMV2:
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s->h263_msmpeg4 = 1;
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s->h263_pred = 1;
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s->msmpeg4_version=5;
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break;
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2006-06-29 13:17:50 +02:00
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case CODEC_ID_VC1:
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2005-01-30 17:34:57 +01:00
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case CODEC_ID_WMV3:
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s->h263_msmpeg4 = 1;
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s->h263_pred = 1;
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s->msmpeg4_version=6;
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break;
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2001-07-22 16:18:56 +02:00
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case CODEC_ID_H263I:
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break;
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2003-07-10 01:10:59 +02:00
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case CODEC_ID_FLV1:
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s->h263_flv = 1;
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break;
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2001-07-22 16:18:56 +02:00
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default:
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return -1;
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}
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2002-04-27 14:30:26 +02:00
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s->codec_id= avctx->codec->id;
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2002-07-14 20:37:35 +02:00
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2001-07-22 16:18:56 +02:00
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/* for h263, we allocate the images after having read the header */
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2002-03-19 04:51:36 +01:00
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if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4)
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2001-11-03 01:49:53 +01:00
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if (MPV_common_init(s) < 0)
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return -1;
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2001-07-22 16:18:56 +02:00
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if (s->h263_msmpeg4)
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2002-06-18 02:46:02 +02:00
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ff_msmpeg4_decode_init(s);
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2001-07-22 16:18:56 +02:00
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else
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h263_decode_init_vlc(s);
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2005-12-17 19:14:38 +01:00
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2001-07-22 16:18:56 +02:00
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return 0;
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}
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2002-12-28 00:51:46 +01:00
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int ff_h263_decode_end(AVCodecContext *avctx)
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2001-07-22 16:18:56 +02:00
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{
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MpegEncContext *s = avctx->priv_data;
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MPV_common_end(s);
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return 0;
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}
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2002-09-12 13:10:33 +02:00
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/**
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2005-06-17 17:02:53 +02:00
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* returns the number of bytes consumed for building the current frame
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2002-09-12 13:10:33 +02:00
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*/
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static int get_consumed_bytes(MpegEncContext *s, int buf_size){
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int pos= (get_bits_count(&s->gb)+7)>>3;
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2005-12-17 19:14:38 +01:00
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2003-03-20 18:52:30 +01:00
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if(s->divx_packed){
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2002-09-12 13:10:33 +02:00
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//we would have to scan through the whole buf to handle the weird reordering ...
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2005-12-17 19:14:38 +01:00
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return buf_size;
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2002-11-08 19:35:39 +01:00
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}else if(s->flags&CODEC_FLAG_TRUNCATED){
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pos -= s->parse_context.last_index;
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if(pos<0) pos=0; // padding is not really read so this might be -1
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return pos;
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2002-09-12 13:10:33 +02:00
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}else{
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if(pos==0) pos=1; //avoid infinite loops (i doubt thats needed but ...)
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2002-09-12 17:00:09 +02:00
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if(pos+10>buf_size) pos=buf_size; // oops ;)
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2002-09-12 13:10:33 +02:00
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return pos;
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}
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}
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2002-10-13 15:16:04 +02:00
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static int decode_slice(MpegEncContext *s){
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2003-03-20 02:00:57 +01:00
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const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
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2004-09-26 15:03:43 +02:00
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const int mb_size= 16>>s->avctx->lowres;
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2002-10-13 15:16:04 +02:00
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s->last_resync_gb= s->gb;
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s->first_slice_line= 1;
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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s->resync_mb_x= s->mb_x;
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s->resync_mb_y= s->mb_y;
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2003-12-03 17:47:17 +01:00
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ff_set_qscale(s, s->qscale);
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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if(s->partitioned_frame){
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const int qscale= s->qscale;
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if(s->codec_id==CODEC_ID_MPEG4){
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if(ff_mpeg4_decode_partitions(s) < 0)
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2005-12-17 19:14:38 +01:00
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return -1;
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2002-10-13 15:16:04 +02:00
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}
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2005-12-17 19:14:38 +01:00
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2003-08-28 15:30:03 +02:00
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/* restore variables which were modified */
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2002-10-13 15:16:04 +02:00
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s->first_slice_line=1;
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s->mb_x= s->resync_mb_x;
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s->mb_y= s->resync_mb_y;
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2003-12-03 17:47:17 +01:00
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ff_set_qscale(s, qscale);
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2002-10-13 15:16:04 +02:00
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}
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for(; s->mb_y < s->mb_height; s->mb_y++) {
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/* per-row end of slice checks */
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if(s->msmpeg4_version){
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if(s->resync_mb_y + s->slice_height == s->mb_y){
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2003-03-20 02:00:57 +01:00
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ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
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2002-10-13 15:16:04 +02:00
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return 0;
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}
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}
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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if(s->msmpeg4_version==1){
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s->last_dc[0]=
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s->last_dc[1]=
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s->last_dc[2]= 128;
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}
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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ff_init_block_index(s);
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for(; s->mb_x < s->mb_width; s->mb_x++) {
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int ret;
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ff_update_block_index(s);
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if(s->resync_mb_x == s->mb_x && s->resync_mb_y+1 == s->mb_y){
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2005-12-17 19:14:38 +01:00
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s->first_slice_line=0;
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2002-10-13 15:16:04 +02:00
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}
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/* DCT & quantize */
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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s->mv_dir = MV_DIR_FORWARD;
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s->mv_type = MV_TYPE_16X16;
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2005-04-24 19:21:11 +02:00
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// s->mb_skipped = 0;
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2002-10-13 15:16:04 +02:00
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//printf("%d %d %06X\n", ret, get_bits_count(&s->gb), show_bits(&s->gb, 24));
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ret= s->decode_mb(s, s->block);
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2003-07-29 04:09:12 +02:00
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if (s->pict_type!=B_TYPE)
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ff_h263_update_motion_val(s);
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2002-10-13 15:16:04 +02:00
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if(ret<0){
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2003-04-10 15:18:38 +02:00
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const int xy= s->mb_x + s->mb_y*s->mb_stride;
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2002-10-13 15:16:04 +02:00
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if(ret==SLICE_END){
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2003-07-04 00:35:39 +02:00
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MPV_decode_mb(s, s->block);
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2003-12-01 16:23:14 +01:00
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if(s->loop_filter)
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ff_h263_loop_filter(s);
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2003-07-04 00:35:39 +02:00
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2002-10-20 01:48:08 +02:00
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//printf("%d %d %d %06X\n", s->mb_x, s->mb_y, s->gb.size*8 - get_bits_count(&s->gb), show_bits(&s->gb, 24));
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2003-03-20 02:00:57 +01:00
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ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
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2002-10-14 21:53:04 +02:00
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s->padding_bug_score--;
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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if(++s->mb_x >= s->mb_width){
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s->mb_x=0;
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2004-09-26 15:03:43 +02:00
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ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
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2002-10-13 15:16:04 +02:00
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s->mb_y++;
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}
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2005-12-17 19:14:38 +01:00
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return 0;
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2002-10-13 15:16:04 +02:00
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}else if(ret==SLICE_NOEND){
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2003-11-03 14:26:22 +01:00
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av_log(s->avctx, AV_LOG_ERROR, "Slice mismatch at MB: %d\n", xy);
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2003-03-20 02:00:57 +01:00
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ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x+1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
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2002-10-13 15:16:04 +02:00
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return -1;
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}
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2003-11-03 14:26:22 +01:00
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av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy);
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2003-03-20 02:00:57 +01:00
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ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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return -1;
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}
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2003-07-04 00:35:39 +02:00
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MPV_decode_mb(s, s->block);
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2003-12-01 16:23:14 +01:00
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if(s->loop_filter)
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ff_h263_loop_filter(s);
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2002-10-13 15:16:04 +02:00
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}
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2005-12-17 19:14:38 +01:00
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2004-09-26 15:03:43 +02:00
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ff_draw_horiz_band(s, s->mb_y*mb_size, mb_size);
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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s->mb_x= 0;
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}
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2005-12-17 19:14:38 +01:00
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2002-10-13 15:16:04 +02:00
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assert(s->mb_x==0 && s->mb_y==s->mb_height);
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2002-10-14 21:53:04 +02:00
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/* try to detect the padding bug */
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if( s->codec_id==CODEC_ID_MPEG4
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2005-12-17 19:14:38 +01:00
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&& (s->workaround_bugs&FF_BUG_AUTODETECT)
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2003-01-21 18:34:12 +01:00
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&& s->gb.size_in_bits - get_bits_count(&s->gb) >=0
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&& s->gb.size_in_bits - get_bits_count(&s->gb) < 48
|
2002-12-11 09:56:28 +01:00
|
|
|
// && !s->resync_marker
|
2002-10-14 21:53:04 +02:00
|
|
|
&& !s->data_partitioning){
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-14 21:53:04 +02:00
|
|
|
const int bits_count= get_bits_count(&s->gb);
|
2003-01-21 18:34:12 +01:00
|
|
|
const int bits_left = s->gb.size_in_bits - bits_count;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-01-13 13:57:39 +01:00
|
|
|
if(bits_left==0){
|
|
|
|
s->padding_bug_score+=16;
|
2002-11-02 01:05:06 +01:00
|
|
|
} else if(bits_left != 1){
|
2002-10-14 21:53:04 +02:00
|
|
|
int v= show_bits(&s->gb, 8);
|
|
|
|
v|= 0x7F >> (7-(bits_count&7));
|
2002-11-02 01:05:06 +01:00
|
|
|
|
2004-11-13 02:05:12 +01:00
|
|
|
if(v==0x7F && bits_left<=8)
|
2002-10-14 21:53:04 +02:00
|
|
|
s->padding_bug_score--;
|
2004-11-13 02:05:12 +01:00
|
|
|
else if(v==0x7F && ((get_bits_count(&s->gb)+8)&8) && bits_left<=16)
|
|
|
|
s->padding_bug_score+= 4;
|
2002-10-14 21:53:04 +02:00
|
|
|
else
|
2005-12-17 19:14:38 +01:00
|
|
|
s->padding_bug_score++;
|
|
|
|
}
|
2002-10-14 21:53:04 +02:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-11-13 02:05:12 +01:00
|
|
|
if(s->workaround_bugs&FF_BUG_AUTODETECT){
|
2005-01-05 01:20:52 +01:00
|
|
|
if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version || !s->resync_marker)*/)
|
2004-11-13 02:05:12 +01:00
|
|
|
s->workaround_bugs |= FF_BUG_NO_PADDING;
|
|
|
|
else
|
|
|
|
s->workaround_bugs &= ~FF_BUG_NO_PADDING;
|
|
|
|
}
|
2002-10-14 21:53:04 +02:00
|
|
|
|
2005-06-17 17:02:53 +02:00
|
|
|
// handle formats which don't have unique end markers
|
2003-01-13 14:20:21 +01:00
|
|
|
if(s->msmpeg4_version || (s->workaround_bugs&FF_BUG_NO_PADDING)){ //FIXME perhaps solve this more cleanly
|
2003-01-21 18:34:12 +01:00
|
|
|
int left= s->gb.size_in_bits - get_bits_count(&s->gb);
|
2002-10-13 15:16:04 +02:00
|
|
|
int max_extra=7;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
/* no markers in M$ crap */
|
|
|
|
if(s->msmpeg4_version && s->pict_type==I_TYPE)
|
|
|
|
max_extra+= 17;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
/* buggy padding but the frame should still end approximately at the bitstream end */
|
2003-01-13 14:20:21 +01:00
|
|
|
if((s->workaround_bugs&FF_BUG_NO_PADDING) && s->error_resilience>=3)
|
2002-10-13 15:16:04 +02:00
|
|
|
max_extra+= 48;
|
2003-01-13 14:20:21 +01:00
|
|
|
else if((s->workaround_bugs&FF_BUG_NO_PADDING))
|
2002-10-13 15:16:04 +02:00
|
|
|
max_extra+= 256*256*256*64;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
if(left>max_extra){
|
2003-11-03 14:26:22 +01:00
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24));
|
2002-10-13 15:16:04 +02:00
|
|
|
}
|
|
|
|
else if(left<0){
|
2003-11-03 14:26:22 +01:00
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left);
|
2002-10-13 15:16:04 +02:00
|
|
|
}else
|
2003-03-20 02:00:57 +01:00
|
|
|
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, AC_END|DC_END|MV_END);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
return 0;
|
|
|
|
}
|
2002-10-14 21:53:04 +02:00
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
|
2003-01-21 18:34:12 +01:00
|
|
|
s->gb.size_in_bits - get_bits_count(&s->gb),
|
2003-08-25 14:50:15 +02:00
|
|
|
show_bits(&s->gb, 24), s->padding_bug_score);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-03-20 02:00:57 +01:00
|
|
|
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
|
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2002-11-08 19:35:39 +01:00
|
|
|
/**
|
|
|
|
* finds the end of the current frame in the bitstream.
|
|
|
|
* @return the position of the first byte of the next frame, or -1
|
|
|
|
*/
|
2004-04-29 16:21:33 +02:00
|
|
|
int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
|
2002-11-08 19:35:39 +01:00
|
|
|
int vop_found, i;
|
|
|
|
uint32_t state;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-11-08 19:35:39 +01:00
|
|
|
vop_found= pc->frame_start_found;
|
|
|
|
state= pc->state;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-11-08 19:35:39 +01:00
|
|
|
i=0;
|
|
|
|
if(!vop_found){
|
|
|
|
for(i=0; i<buf_size; i++){
|
|
|
|
state= (state<<8) | buf[i];
|
|
|
|
if(state == 0x1B6){
|
|
|
|
i++;
|
|
|
|
vop_found=1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2003-04-22 15:55:12 +02:00
|
|
|
|
2004-04-29 16:21:33 +02:00
|
|
|
if(vop_found){
|
|
|
|
/* EOF considered as end of frame */
|
|
|
|
if (buf_size == 0)
|
|
|
|
return 0;
|
|
|
|
for(; i<buf_size; i++){
|
|
|
|
state= (state<<8) | buf[i];
|
|
|
|
if((state&0xFFFFFF00) == 0x100){
|
|
|
|
pc->frame_start_found=0;
|
2005-12-17 19:14:38 +01:00
|
|
|
pc->state=-1;
|
2004-04-29 16:21:33 +02:00
|
|
|
return i-3;
|
|
|
|
}
|
2002-11-08 19:35:39 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
pc->frame_start_found= vop_found;
|
|
|
|
pc->state= state;
|
2003-04-27 03:33:39 +02:00
|
|
|
return END_NOT_FOUND;
|
2002-11-08 19:35:39 +01:00
|
|
|
}
|
|
|
|
|
2004-04-29 16:21:33 +02:00
|
|
|
static int h263_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
|
2003-05-22 16:12:22 +02:00
|
|
|
int vop_found, i;
|
|
|
|
uint32_t state;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-05-22 16:12:22 +02:00
|
|
|
vop_found= pc->frame_start_found;
|
|
|
|
state= pc->state;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-05-22 16:12:22 +02:00
|
|
|
i=0;
|
|
|
|
if(!vop_found){
|
|
|
|
for(i=0; i<buf_size; i++){
|
|
|
|
state= (state<<8) | buf[i];
|
|
|
|
if(state>>(32-22) == 0x20){
|
|
|
|
i++;
|
|
|
|
vop_found=1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
if(vop_found){
|
2003-05-22 16:12:22 +02:00
|
|
|
for(; i<buf_size; i++){
|
|
|
|
state= (state<<8) | buf[i];
|
|
|
|
if(state>>(32-22) == 0x20){
|
|
|
|
pc->frame_start_found=0;
|
2005-12-17 19:14:38 +01:00
|
|
|
pc->state=-1;
|
2003-05-22 16:12:22 +02:00
|
|
|
return i-3;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
pc->frame_start_found= vop_found;
|
|
|
|
pc->state= state;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-05-22 16:12:22 +02:00
|
|
|
return END_NOT_FOUND;
|
|
|
|
}
|
|
|
|
|
2004-04-29 16:21:33 +02:00
|
|
|
static int h263_parse(AVCodecParserContext *s,
|
|
|
|
AVCodecContext *avctx,
|
2005-12-17 19:14:38 +01:00
|
|
|
uint8_t **poutbuf, int *poutbuf_size,
|
2004-04-29 16:21:33 +02:00
|
|
|
const uint8_t *buf, int buf_size)
|
|
|
|
{
|
|
|
|
ParseContext *pc = s->priv_data;
|
|
|
|
int next;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-04-29 16:21:33 +02:00
|
|
|
next= h263_find_frame_end(pc, buf, buf_size);
|
|
|
|
|
|
|
|
if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {
|
|
|
|
*poutbuf = NULL;
|
|
|
|
*poutbuf_size = 0;
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
|
|
|
*poutbuf = (uint8_t *)buf;
|
|
|
|
*poutbuf_size = buf_size;
|
|
|
|
return next;
|
|
|
|
}
|
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
int ff_h263_decode_frame(AVCodecContext *avctx,
|
2001-07-22 16:18:56 +02:00
|
|
|
void *data, int *data_size,
|
2003-02-11 17:35:48 +01:00
|
|
|
uint8_t *buf, int buf_size)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
|
|
|
MpegEncContext *s = avctx->priv_data;
|
2003-09-10 00:50:44 +02:00
|
|
|
int ret;
|
2005-12-17 19:14:38 +01:00
|
|
|
AVFrame *pict = data;
|
|
|
|
|
2002-05-17 00:01:30 +02:00
|
|
|
#ifdef PRINT_FRAME_TIME
|
|
|
|
uint64_t time= rdtsc();
|
|
|
|
#endif
|
2001-07-22 16:18:56 +02:00
|
|
|
#ifdef DEBUG
|
|
|
|
printf("*****frame %d size=%d\n", avctx->frame_number, buf_size);
|
|
|
|
printf("bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
|
|
|
|
#endif
|
2002-06-09 15:35:56 +02:00
|
|
|
s->flags= avctx->flags;
|
2004-01-22 20:48:28 +01:00
|
|
|
s->flags2= avctx->flags2;
|
2002-06-02 14:16:28 +02:00
|
|
|
|
2003-07-23 11:58:02 +02:00
|
|
|
/* no supplementary picture */
|
2001-07-22 16:18:56 +02:00
|
|
|
if (buf_size == 0) {
|
2003-07-23 11:58:02 +02:00
|
|
|
/* special case for last picture */
|
|
|
|
if (s->low_delay==0 && s->next_picture_ptr) {
|
|
|
|
*pict= *(AVFrame*)s->next_picture_ptr;
|
|
|
|
s->next_picture_ptr= NULL;
|
|
|
|
|
|
|
|
*data_size = sizeof(AVFrame);
|
|
|
|
}
|
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
return 0;
|
|
|
|
}
|
2003-01-21 22:30:48 +01:00
|
|
|
|
2002-11-08 19:35:39 +01:00
|
|
|
if(s->flags&CODEC_FLAG_TRUNCATED){
|
|
|
|
int next;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-11-08 19:35:39 +01:00
|
|
|
if(s->codec_id==CODEC_ID_MPEG4){
|
2004-04-29 16:21:33 +02:00
|
|
|
next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size);
|
2003-05-22 16:12:22 +02:00
|
|
|
}else if(s->codec_id==CODEC_ID_H263){
|
2004-04-29 16:21:33 +02:00
|
|
|
next= h263_find_frame_end(&s->parse_context, buf, buf_size);
|
2002-11-08 19:35:39 +01:00
|
|
|
}else{
|
2005-04-24 19:21:11 +02:00
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "this codec does not support truncated bitstreams\n");
|
2002-11-08 19:35:39 +01:00
|
|
|
return -1;
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-04-29 16:21:33 +02:00
|
|
|
if( ff_combine_frame(&s->parse_context, next, &buf, &buf_size) < 0 )
|
2002-11-08 19:35:39 +01:00
|
|
|
return buf_size;
|
|
|
|
}
|
2001-07-22 16:18:56 +02:00
|
|
|
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-23 10:14:12 +02:00
|
|
|
retry:
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-01-15 02:29:26 +01:00
|
|
|
if(s->bitstream_buffer_size && (s->divx_packed || buf_size<20)){ //divx 5.01+/xvid frame reorder
|
2003-01-21 18:34:12 +01:00
|
|
|
init_get_bits(&s->gb, s->bitstream_buffer, s->bitstream_buffer_size*8);
|
2002-05-02 22:45:43 +02:00
|
|
|
}else
|
2003-01-21 18:34:12 +01:00
|
|
|
init_get_bits(&s->gb, buf, buf_size*8);
|
2002-06-03 00:08:04 +02:00
|
|
|
s->bitstream_buffer_size=0;
|
2001-07-22 16:18:56 +02:00
|
|
|
|
2002-10-03 00:56:58 +02:00
|
|
|
if (!s->context_initialized) {
|
2002-10-16 19:23:18 +02:00
|
|
|
if (MPV_common_init(s) < 0) //we need the idct permutaton for reading a custom matrix
|
2002-10-03 00:56:58 +02:00
|
|
|
return -1;
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-10-30 17:58:49 +01:00
|
|
|
//we need to set current_picture_ptr before reading the header, otherwise we cant store anyting im there
|
|
|
|
if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){
|
|
|
|
int i= ff_find_unused_picture(s, 0);
|
|
|
|
s->current_picture_ptr= &s->picture[i];
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
/* let's go :-) */
|
2002-12-28 00:51:46 +01:00
|
|
|
if (s->msmpeg4_version==5) {
|
|
|
|
ret= ff_wmv2_decode_picture_header(s);
|
|
|
|
} else if (s->msmpeg4_version) {
|
2001-07-22 16:18:56 +02:00
|
|
|
ret = msmpeg4_decode_picture_header(s);
|
|
|
|
} else if (s->h263_pred) {
|
2002-10-14 14:21:54 +02:00
|
|
|
if(s->avctx->extradata_size && s->picture_number==0){
|
|
|
|
GetBitContext gb;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-01-21 18:34:12 +01:00
|
|
|
init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
|
2002-10-14 14:21:54 +02:00
|
|
|
ret = ff_mpeg4_decode_picture_header(s, &gb);
|
|
|
|
}
|
|
|
|
ret = ff_mpeg4_decode_picture_header(s, &s->gb);
|
|
|
|
|
2002-11-02 19:47:51 +01:00
|
|
|
if(s->flags& CODEC_FLAG_LOW_DELAY)
|
|
|
|
s->low_delay=1;
|
2003-12-13 21:41:33 +01:00
|
|
|
} else if (s->codec_id == CODEC_ID_H263I) {
|
2001-07-22 16:18:56 +02:00
|
|
|
ret = intel_h263_decode_picture_header(s);
|
2003-07-10 01:10:59 +02:00
|
|
|
} else if (s->h263_flv) {
|
|
|
|
ret = flv_h263_decode_picture_header(s);
|
2001-07-22 16:18:56 +02:00
|
|
|
} else {
|
|
|
|
ret = h263_decode_picture_header(s);
|
2002-03-19 04:51:36 +01:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-04-24 19:21:11 +02:00
|
|
|
if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size);
|
2003-08-01 13:00:03 +02:00
|
|
|
|
|
|
|
/* skip if the header was thrashed */
|
|
|
|
if (ret < 0){
|
2003-11-03 14:26:22 +01:00
|
|
|
av_log(s->avctx, AV_LOG_ERROR, "header damaged\n");
|
2003-08-01 13:00:03 +02:00
|
|
|
return -1;
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-12-09 01:29:17 +01:00
|
|
|
avctx->has_b_frames= !s->low_delay;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-08-25 14:50:15 +02:00
|
|
|
if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
|
2005-12-17 19:14:38 +01:00
|
|
|
if(s->avctx->stream_codec_tag == ff_get_fourcc("XVID") ||
|
2006-02-19 11:20:27 +01:00
|
|
|
s->avctx->codec_tag == ff_get_fourcc("XVID") || s->avctx->codec_tag == ff_get_fourcc("XVIX") ||
|
|
|
|
s->avctx->codec_tag == ff_get_fourcc("RMP4"))
|
2003-08-25 14:50:15 +02:00
|
|
|
s->xvid_build= -1;
|
2003-09-11 01:40:55 +02:00
|
|
|
#if 0
|
2003-09-10 13:28:18 +02:00
|
|
|
if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==1
|
2005-12-17 19:14:38 +01:00
|
|
|
&& s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc
|
2003-09-10 13:28:18 +02:00
|
|
|
s->xvid_build= -1;
|
2003-09-11 01:40:55 +02:00
|
|
|
#endif
|
|
|
|
}
|
2003-08-25 14:50:15 +02:00
|
|
|
|
2003-09-11 01:40:55 +02:00
|
|
|
if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
|
2003-08-25 14:50:15 +02:00
|
|
|
if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==0)
|
|
|
|
s->divx_version= 400; //divx 4
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-10-15 13:48:50 +02:00
|
|
|
if(s->xvid_build && s->divx_version){
|
|
|
|
s->divx_version=
|
|
|
|
s->divx_build= 0;
|
|
|
|
}
|
2002-10-13 15:16:04 +02:00
|
|
|
|
|
|
|
if(s->workaround_bugs&FF_BUG_AUTODETECT){
|
2005-12-17 19:14:38 +01:00
|
|
|
if(s->avctx->codec_tag == ff_get_fourcc("XVIX"))
|
2002-10-13 15:16:04 +02:00
|
|
|
s->workaround_bugs|= FF_BUG_XVID_ILACE;
|
2003-08-25 14:50:15 +02:00
|
|
|
|
2003-03-08 02:40:52 +01:00
|
|
|
if(s->avctx->codec_tag == ff_get_fourcc("UMP4")){
|
2002-10-13 15:16:04 +02:00
|
|
|
s->workaround_bugs|= FF_BUG_UMP4;
|
|
|
|
}
|
2002-10-22 20:55:20 +02:00
|
|
|
|
2003-08-25 14:50:15 +02:00
|
|
|
if(s->divx_version>=500){
|
2002-10-22 20:55:20 +02:00
|
|
|
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
|
|
|
|
}
|
2002-10-22 21:48:52 +02:00
|
|
|
|
2003-02-03 00:34:30 +01:00
|
|
|
if(s->divx_version>502){
|
|
|
|
s->workaround_bugs|= FF_BUG_QPEL_CHROMA2;
|
|
|
|
}
|
|
|
|
|
2002-12-29 02:27:50 +01:00
|
|
|
if(s->xvid_build && s->xvid_build<=3)
|
|
|
|
s->padding_bug_score= 256*256*256*64;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-22 21:48:52 +02:00
|
|
|
if(s->xvid_build && s->xvid_build<=1)
|
|
|
|
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
|
|
|
|
|
2003-08-25 14:50:15 +02:00
|
|
|
if(s->xvid_build && s->xvid_build<=12)
|
|
|
|
s->workaround_bugs|= FF_BUG_EDGE;
|
|
|
|
|
2004-05-05 21:53:40 +02:00
|
|
|
if(s->xvid_build && s->xvid_build<=32)
|
|
|
|
s->workaround_bugs|= FF_BUG_DC_CLIP;
|
|
|
|
|
2003-01-09 21:42:37 +01:00
|
|
|
#define SET_QPEL_FUNC(postfix1, postfix2) \
|
|
|
|
s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\
|
|
|
|
s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\
|
|
|
|
s->dsp.avg_ ## postfix1 = ff_avg_ ## postfix2;
|
|
|
|
|
|
|
|
if(s->lavc_build && s->lavc_build<4653)
|
|
|
|
s->workaround_bugs|= FF_BUG_STD_QPEL;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-02-08 19:23:39 +01:00
|
|
|
if(s->lavc_build && s->lavc_build<4655)
|
|
|
|
s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
|
|
|
|
|
2003-10-05 01:59:14 +02:00
|
|
|
if(s->lavc_build && s->lavc_build<4670){
|
2003-07-16 20:12:14 +02:00
|
|
|
s->workaround_bugs|= FF_BUG_EDGE;
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-05-05 21:53:40 +02:00
|
|
|
if(s->lavc_build && s->lavc_build<=4712)
|
|
|
|
s->workaround_bugs|= FF_BUG_DC_CLIP;
|
2003-07-16 20:12:14 +02:00
|
|
|
|
2003-02-08 19:23:39 +01:00
|
|
|
if(s->divx_version)
|
|
|
|
s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE;
|
2002-10-14 21:53:04 +02:00
|
|
|
//printf("padding_bug_score: %d\n", s->padding_bug_score);
|
2003-02-28 02:59:56 +01:00
|
|
|
if(s->divx_version==501 && s->divx_build==20020416)
|
|
|
|
s->padding_bug_score= 256*256*256*64;
|
2003-03-15 21:47:09 +01:00
|
|
|
|
2003-07-16 20:12:14 +02:00
|
|
|
if(s->divx_version && s->divx_version<500){
|
2003-03-15 21:47:09 +01:00
|
|
|
s->workaround_bugs|= FF_BUG_EDGE;
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2004-04-02 21:54:33 +02:00
|
|
|
if(s->divx_version)
|
|
|
|
s->workaround_bugs|= FF_BUG_HPEL_CHROMA;
|
2002-10-14 21:53:04 +02:00
|
|
|
#if 0
|
2002-10-13 15:16:04 +02:00
|
|
|
if(s->divx_version==500)
|
2003-02-28 02:59:56 +01:00
|
|
|
s->padding_bug_score= 256*256*256*64;
|
2002-10-13 15:16:04 +02:00
|
|
|
|
|
|
|
/* very ugly XVID padding bug detection FIXME/XXX solve this differently
|
|
|
|
* lets hope this at least works
|
|
|
|
*/
|
|
|
|
if( s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==0
|
|
|
|
&& s->codec_id==CODEC_ID_MPEG4 && s->vo_type==0)
|
|
|
|
s->workaround_bugs|= FF_BUG_NO_PADDING;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
if(s->lavc_build && s->lavc_build<4609) //FIXME not sure about the version num but a 4609 file seems ok
|
|
|
|
s->workaround_bugs|= FF_BUG_NO_PADDING;
|
2002-10-14 21:53:04 +02:00
|
|
|
#endif
|
2002-10-13 15:16:04 +02:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-01-09 21:42:37 +01:00
|
|
|
if(s->workaround_bugs& FF_BUG_STD_QPEL){
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[0][ 5], qpel16_mc11_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[0][ 7], qpel16_mc31_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[0][ 9], qpel16_mc12_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[0][11], qpel16_mc32_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[0][13], qpel16_mc13_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[0][15], qpel16_mc33_old_c)
|
|
|
|
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[1][ 5], qpel8_mc11_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[1][ 7], qpel8_mc31_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[1][ 9], qpel8_mc12_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[1][11], qpel8_mc32_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[1][13], qpel8_mc13_old_c)
|
|
|
|
SET_QPEL_FUNC(qpel_pixels_tab[1][15], qpel8_mc33_old_c)
|
|
|
|
}
|
2002-10-13 15:16:04 +02:00
|
|
|
|
2003-09-10 13:28:18 +02:00
|
|
|
if(avctx->debug & FF_DEBUG_BUGS)
|
2005-12-17 19:14:38 +01:00
|
|
|
av_log(s->avctx, AV_LOG_DEBUG, "bugs: %X lavc_build:%d xvid_build:%d divx_version:%d divx_build:%d %s\n",
|
2003-09-10 13:28:18 +02:00
|
|
|
s->workaround_bugs, s->lavc_build, s->xvid_build, s->divx_version, s->divx_build,
|
|
|
|
s->divx_packed ? "p" : "");
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-07-27 16:48:44 +02:00
|
|
|
#if 0 // dump bits per frame / qp / complexity
|
|
|
|
{
|
|
|
|
static FILE *f=NULL;
|
|
|
|
if(!f) f=fopen("rate_qp_cplx.txt", "w");
|
2002-08-02 01:23:48 +02:00
|
|
|
fprintf(f, "%d %d %f\n", buf_size, s->qscale, buf_size*(double)s->qscale);
|
2002-07-27 16:48:44 +02:00
|
|
|
}
|
|
|
|
#endif
|
2004-06-26 11:52:16 +02:00
|
|
|
|
2005-09-10 19:09:54 +02:00
|
|
|
#if defined(HAVE_MMX) && defined(CONFIG_GPL)
|
2005-12-21 16:51:45 +01:00
|
|
|
if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build && avctx->idct_algo == FF_IDCT_AUTO && (mm_flags & MM_MMX)){
|
2005-09-10 19:09:54 +02:00
|
|
|
avctx->idct_algo= FF_IDCT_XVIDMMX;
|
2004-09-29 01:31:59 +02:00
|
|
|
avctx->coded_width= 0; // force reinit
|
2005-12-18 03:23:19 +01:00
|
|
|
// dsputil_init(&s->dsp, avctx);
|
|
|
|
s->picture_number=0;
|
2004-06-25 21:14:23 +02:00
|
|
|
}
|
2004-06-26 11:52:16 +02:00
|
|
|
#endif
|
|
|
|
|
2002-03-19 04:51:36 +01:00
|
|
|
/* After H263 & mpeg4 header decode we have the height, width,*/
|
2001-11-17 16:43:04 +01:00
|
|
|
/* and other parameters. So then we could init the picture */
|
|
|
|
/* FIXME: By the way H263 decoder is evolving it should have */
|
|
|
|
/* an H263EncContext */
|
2005-12-17 19:14:38 +01:00
|
|
|
|
|
|
|
if ( s->width != avctx->coded_width
|
2004-09-27 13:50:56 +02:00
|
|
|
|| s->height != avctx->coded_height) {
|
2002-07-14 20:37:35 +02:00
|
|
|
/* H.263 could change picture size any time */
|
2003-10-15 17:37:25 +02:00
|
|
|
ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat
|
|
|
|
s->parse_context.buffer=0;
|
2002-07-14 20:37:35 +02:00
|
|
|
MPV_common_end(s);
|
2003-10-15 17:37:25 +02:00
|
|
|
s->parse_context= pc;
|
2002-07-14 20:37:35 +02:00
|
|
|
}
|
2002-03-19 04:51:36 +01:00
|
|
|
if (!s->context_initialized) {
|
2004-09-27 13:50:56 +02:00
|
|
|
avcodec_set_dimensions(avctx, s->width, s->height);
|
2002-10-13 15:16:04 +02:00
|
|
|
|
2002-10-23 10:14:12 +02:00
|
|
|
goto retry;
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
2002-10-20 01:48:08 +02:00
|
|
|
|
|
|
|
if((s->codec_id==CODEC_ID_H263 || s->codec_id==CODEC_ID_H263P))
|
|
|
|
s->gob_index = ff_h263_get_gob_height(s);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-12-04 11:04:03 +01:00
|
|
|
// for hurry_up==5
|
|
|
|
s->current_picture.pict_type= s->pict_type;
|
|
|
|
s->current_picture.key_frame= s->pict_type == I_TYPE;
|
2002-11-10 11:54:07 +01:00
|
|
|
|
2005-06-17 17:02:53 +02:00
|
|
|
/* skip B-frames if we don't have reference frames */
|
2004-06-03 16:17:59 +02:00
|
|
|
if(s->last_picture_ptr==NULL && (s->pict_type==B_TYPE || s->dropable)) return get_consumed_bytes(s, buf_size);
|
2002-04-27 15:12:57 +02:00
|
|
|
/* skip b frames if we are in a hurry */
|
2002-11-23 10:12:57 +01:00
|
|
|
if(avctx->hurry_up && s->pict_type==B_TYPE) return get_consumed_bytes(s, buf_size);
|
2005-07-14 23:39:36 +02:00
|
|
|
if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==B_TYPE)
|
|
|
|
|| (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=I_TYPE)
|
2005-12-17 19:14:38 +01:00
|
|
|
|| avctx->skip_frame >= AVDISCARD_ALL)
|
2005-07-14 23:39:36 +02:00
|
|
|
return get_consumed_bytes(s, buf_size);
|
2002-11-10 11:54:07 +01:00
|
|
|
/* skip everything if we are in a hurry>=5 */
|
2002-11-23 10:12:57 +01:00
|
|
|
if(avctx->hurry_up>=5) return get_consumed_bytes(s, buf_size);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-06-02 14:16:28 +02:00
|
|
|
if(s->next_p_frame_damaged){
|
|
|
|
if(s->pict_type==B_TYPE)
|
2002-09-12 13:10:33 +02:00
|
|
|
return get_consumed_bytes(s, buf_size);
|
2002-06-02 14:16:28 +02:00
|
|
|
else
|
|
|
|
s->next_p_frame_damaged=0;
|
|
|
|
}
|
|
|
|
|
2002-10-27 02:02:23 +02:00
|
|
|
if(MPV_frame_start(s, avctx) < 0)
|
|
|
|
return -1;
|
2001-07-22 16:18:56 +02:00
|
|
|
|
|
|
|
#ifdef DEBUG
|
2006-03-08 12:43:10 +01:00
|
|
|
av_log(avctx, AV_LOG_DEBUG, "qscale=%d\n", s->qscale);
|
2001-07-22 16:18:56 +02:00
|
|
|
#endif
|
|
|
|
|
2003-03-20 02:00:57 +01:00
|
|
|
ff_er_frame_start(s);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-04-12 17:00:32 +02:00
|
|
|
//the second part of the wmv2 header contains the MB skip bits which are stored in current_picture->mb_type
|
|
|
|
//which isnt available before MPV_frame_start()
|
|
|
|
if (s->msmpeg4_version==5){
|
|
|
|
if(ff_wmv2_decode_secondary_picture_header(s) < 0)
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
/* decode each macroblock */
|
2005-12-17 19:14:38 +01:00
|
|
|
s->mb_x=0;
|
2002-10-13 15:16:04 +02:00
|
|
|
s->mb_y=0;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
decode_slice(s);
|
2003-04-12 17:00:32 +02:00
|
|
|
while(s->mb_y<s->mb_height){
|
2002-10-13 15:16:04 +02:00
|
|
|
if(s->msmpeg4_version){
|
2003-04-12 17:00:32 +02:00
|
|
|
if(s->mb_x!=0 || (s->mb_y%s->slice_height)!=0 || get_bits_count(&s->gb) > s->gb.size_in_bits)
|
2002-10-13 15:16:04 +02:00
|
|
|
break;
|
|
|
|
}else{
|
|
|
|
if(ff_h263_resync(s)<0)
|
|
|
|
break;
|
2002-06-02 14:16:28 +02:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2003-01-09 12:37:08 +01:00
|
|
|
if(s->msmpeg4_version<4 && s->h263_pred)
|
2002-10-13 15:16:04 +02:00
|
|
|
ff_mpeg4_clean_buffers(s);
|
2002-03-28 14:41:04 +01:00
|
|
|
|
2002-10-13 15:16:04 +02:00
|
|
|
decode_slice(s);
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
2002-10-19 03:31:26 +02:00
|
|
|
|
2002-04-07 00:29:37 +02:00
|
|
|
if (s->h263_msmpeg4 && s->msmpeg4_version<4 && s->pict_type==I_TYPE)
|
2002-12-04 11:04:03 +01:00
|
|
|
if(msmpeg4_decode_ext_header(s, buf_size) < 0){
|
|
|
|
s->error_status_table[s->mb_num-1]= AC_ERROR|DC_ERROR|MV_ERROR;
|
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2002-04-22 14:45:22 +02:00
|
|
|
/* divx 5.01+ bistream reorder stuff */
|
2003-03-20 18:52:30 +01:00
|
|
|
if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0 && s->divx_packed){
|
2002-06-02 14:16:28 +02:00
|
|
|
int current_pos= get_bits_count(&s->gb)>>3;
|
2004-01-15 02:29:26 +01:00
|
|
|
int startcode_found=0;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2005-01-12 01:16:25 +01:00
|
|
|
if(buf_size - current_pos > 5){
|
2002-06-02 14:16:28 +02:00
|
|
|
int i;
|
2002-09-12 13:10:33 +02:00
|
|
|
for(i=current_pos; i<buf_size-3; i++){
|
2002-06-02 14:16:28 +02:00
|
|
|
if(buf[i]==0 && buf[i+1]==0 && buf[i+2]==1 && buf[i+3]==0xB6){
|
|
|
|
startcode_found=1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2004-01-15 02:29:26 +01:00
|
|
|
}
|
|
|
|
if(s->gb.buffer == s->bitstream_buffer && buf_size>20){ //xvid style
|
|
|
|
startcode_found=1;
|
|
|
|
current_pos=0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(startcode_found){
|
2005-01-12 01:16:25 +01:00
|
|
|
s->bitstream_buffer= av_fast_realloc(
|
2005-12-17 19:14:38 +01:00
|
|
|
s->bitstream_buffer,
|
|
|
|
&s->allocated_bitstream_buffer_size,
|
2005-01-12 01:16:25 +01:00
|
|
|
buf_size - current_pos + FF_INPUT_BUFFER_PADDING_SIZE);
|
2004-01-15 02:29:26 +01:00
|
|
|
memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos);
|
|
|
|
s->bitstream_buffer_size= buf_size - current_pos;
|
2002-06-02 14:16:28 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-03-20 02:00:57 +01:00
|
|
|
ff_er_frame_end(s);
|
2002-10-13 15:16:04 +02:00
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
MPV_frame_end(s);
|
2003-01-09 21:42:37 +01:00
|
|
|
|
2003-05-27 14:31:03 +02:00
|
|
|
assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type);
|
|
|
|
assert(s->current_picture.pict_type == s->pict_type);
|
2006-03-10 21:40:52 +01:00
|
|
|
if (s->pict_type == B_TYPE || s->low_delay) {
|
|
|
|
*pict= *(AVFrame*)s->current_picture_ptr;
|
|
|
|
} else if (s->last_picture_ptr != NULL) {
|
|
|
|
*pict= *(AVFrame*)s->last_picture_ptr;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(s->last_picture_ptr || s->low_delay){
|
|
|
|
*data_size = sizeof(AVFrame);
|
2003-12-30 03:12:12 +01:00
|
|
|
ff_print_debug_info(s, pict);
|
2002-03-12 23:54:25 +01:00
|
|
|
}
|
2002-12-18 10:23:24 +01:00
|
|
|
|
2002-02-09 17:59:56 +01:00
|
|
|
/* Return the Picture timestamp as the frame number */
|
|
|
|
/* we substract 1 because it is added on utils.c */
|
|
|
|
avctx->frame_number = s->picture_number - 1;
|
|
|
|
|
2002-05-17 00:01:30 +02:00
|
|
|
#ifdef PRINT_FRAME_TIME
|
2006-03-08 12:43:10 +01:00
|
|
|
av_log(avctx, AV_LOG_DEBUG, "%Ld\n", rdtsc()-time);
|
2002-05-17 00:01:30 +02:00
|
|
|
#endif
|
2003-05-22 16:12:22 +02:00
|
|
|
|
2002-09-12 13:10:33 +02:00
|
|
|
return get_consumed_bytes(s, buf_size);
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
|
2001-08-15 15:09:47 +02:00
|
|
|
AVCodec mpeg4_decoder = {
|
|
|
|
"mpeg4",
|
2001-07-22 16:18:56 +02:00
|
|
|
CODEC_TYPE_VIDEO,
|
2001-08-15 15:09:47 +02:00
|
|
|
CODEC_ID_MPEG4,
|
2001-07-22 16:18:56 +02:00
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2001-07-22 16:18:56 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2005-01-23 19:09:06 +01:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
|
2003-07-17 14:29:07 +02:00
|
|
|
.flush= ff_mpeg_flush,
|
2001-07-22 16:18:56 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
AVCodec h263_decoder = {
|
|
|
|
"h263",
|
|
|
|
CODEC_TYPE_VIDEO,
|
|
|
|
CODEC_ID_H263,
|
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2001-07-22 16:18:56 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2005-01-23 19:09:06 +01:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
|
2003-07-17 14:29:07 +02:00
|
|
|
.flush= ff_mpeg_flush,
|
2001-07-22 16:18:56 +02:00
|
|
|
};
|
|
|
|
|
2002-04-05 06:09:04 +02:00
|
|
|
AVCodec msmpeg4v1_decoder = {
|
|
|
|
"msmpeg4v1",
|
|
|
|
CODEC_TYPE_VIDEO,
|
|
|
|
CODEC_ID_MSMPEG4V1,
|
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2002-04-05 06:09:04 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2002-07-14 20:37:35 +02:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
2002-04-05 06:09:04 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
AVCodec msmpeg4v2_decoder = {
|
|
|
|
"msmpeg4v2",
|
|
|
|
CODEC_TYPE_VIDEO,
|
|
|
|
CODEC_ID_MSMPEG4V2,
|
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2002-04-05 06:09:04 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2002-07-14 20:37:35 +02:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
2002-04-05 06:09:04 +02:00
|
|
|
};
|
|
|
|
|
|
|
|
AVCodec msmpeg4v3_decoder = {
|
2001-07-22 16:18:56 +02:00
|
|
|
"msmpeg4",
|
|
|
|
CODEC_TYPE_VIDEO,
|
2002-04-05 06:09:04 +02:00
|
|
|
CODEC_ID_MSMPEG4V3,
|
2001-07-22 16:18:56 +02:00
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2001-07-22 16:18:56 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2002-07-14 20:37:35 +02:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
2001-07-22 16:18:56 +02:00
|
|
|
};
|
|
|
|
|
2002-04-07 00:29:37 +02:00
|
|
|
AVCodec wmv1_decoder = {
|
|
|
|
"wmv1",
|
|
|
|
CODEC_TYPE_VIDEO,
|
|
|
|
CODEC_ID_WMV1,
|
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2002-06-18 02:46:02 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2002-07-14 20:37:35 +02:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
2002-06-18 02:46:02 +02:00
|
|
|
};
|
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
AVCodec h263i_decoder = {
|
|
|
|
"h263i",
|
|
|
|
CODEC_TYPE_VIDEO,
|
|
|
|
CODEC_ID_H263I,
|
|
|
|
sizeof(MpegEncContext),
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_init,
|
2001-07-22 16:18:56 +02:00
|
|
|
NULL,
|
2002-12-28 00:51:46 +01:00
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
2002-07-14 20:37:35 +02:00
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
|
2001-07-22 16:18:56 +02:00
|
|
|
};
|
|
|
|
|
2003-07-10 01:10:59 +02:00
|
|
|
AVCodec flv_decoder = {
|
|
|
|
"flv",
|
|
|
|
CODEC_TYPE_VIDEO,
|
|
|
|
CODEC_ID_FLV1,
|
|
|
|
sizeof(MpegEncContext),
|
|
|
|
ff_h263_decode_init,
|
|
|
|
NULL,
|
|
|
|
ff_h263_decode_end,
|
|
|
|
ff_h263_decode_frame,
|
|
|
|
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1
|
|
|
|
};
|
2004-04-29 16:21:33 +02:00
|
|
|
|
|
|
|
AVCodecParser h263_parser = {
|
|
|
|
{ CODEC_ID_H263 },
|
|
|
|
sizeof(ParseContext),
|
|
|
|
NULL,
|
|
|
|
h263_parse,
|
|
|
|
ff_parse_close,
|
|
|
|
};
|