diff options
Diffstat (limited to 'ffmpeg1/libavformat/mpegvideodec.c')
| -rw-r--r-- | ffmpeg1/libavformat/mpegvideodec.c | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/ffmpeg1/libavformat/mpegvideodec.c b/ffmpeg1/libavformat/mpegvideodec.c deleted file mode 100644 index 471d2f4..0000000 --- a/ffmpeg1/libavformat/mpegvideodec.c +++ /dev/null @@ -1,72 +0,0 @@ -/* - * RAW MPEG video demuxer - * Copyright (c) 2002-2003 Fabrice Bellard - * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "avformat.h" -#include "rawdec.h" - -#define SEQ_START_CODE 0x000001b3 -#define GOP_START_CODE 0x000001b8 -#define PICTURE_START_CODE 0x00000100 -#define SLICE_START_CODE 0x00000101 -#define PACK_START_CODE 0x000001ba -#define VIDEO_ID 0x000001e0 -#define AUDIO_ID 0x000001c0 - -static int mpegvideo_probe(AVProbeData *p) -{ - uint32_t code= -1; - int pic=0, seq=0, slice=0, pspack=0, vpes=0, apes=0, res=0, sicle=0; - int i; - uint32_t last = 0; - - for(i=0; i<p->buf_size; i++){ - code = (code<<8) + p->buf[i]; - if ((code & 0xffffff00) == 0x100) { - switch(code){ - case SEQ_START_CODE: seq++; break; - case PICTURE_START_CODE: pic++; break; - case PACK_START_CODE: pspack++; break; - case 0x1b6: - res++; break; - } - if (code >= SLICE_START_CODE && code <= 0x1af) { - if (last >= SLICE_START_CODE && last <= 0x1af) { - if (code >= last) slice++; - else sicle++; - }else{ - if (code == SLICE_START_CODE) slice++; - else sicle++; - } - } - if ((code & 0x1f0) == VIDEO_ID) vpes++; - else if((code & 0x1e0) == AUDIO_ID) apes++; - last = code; - } - } - if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !apes && !res && slice > sicle) { - if(vpes) return AVPROBE_SCORE_MAX/8; - else return pic>1 ? AVPROBE_SCORE_MAX/2+1 : AVPROBE_SCORE_MAX/4; // +1 for .mpg - } - return 0; -} - -FF_DEF_RAWVIDEO_DEMUXER(mpegvideo, "raw MPEG video", mpegvideo_probe, NULL, AV_CODEC_ID_MPEG1VIDEO) |