diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/vc1_parser.c')
-rw-r--r-- | contrib/ffmpeg/libavcodec/vc1_parser.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/contrib/ffmpeg/libavcodec/vc1_parser.c b/contrib/ffmpeg/libavcodec/vc1_parser.c deleted file mode 100644 index a76d14707..000000000 --- a/contrib/ffmpeg/libavcodec/vc1_parser.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * VC-1 and WMV3 parser - * Copyright (c) 2006-2007 Konstantin Shishkov - * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer - * - * 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 - */ - -/** - * @file vc1_parser.c - * VC-1 and WMV3 parser - */ - -#include "parser.h" -#include "vc1.h" - -/** - * finds the end of the current frame in the bitstream. - * @return the position of the first byte of the next frame, or -1 - */ -static int vc1_find_frame_end(ParseContext *pc, const uint8_t *buf, - int buf_size) { - int pic_found, i; - uint32_t state; - - pic_found= pc->frame_start_found; - state= pc->state; - - i=0; - if(!pic_found){ - for(i=0; i<buf_size; i++){ - state= (state<<8) | buf[i]; - if(state == VC1_CODE_FRAME || state == VC1_CODE_FIELD){ - i++; - pic_found=1; - break; - } - } - } - - if(pic_found){ - /* EOF considered as end of frame */ - if (buf_size == 0) - return 0; - for(; i<buf_size; i++){ - state= (state<<8) | buf[i]; - if(IS_MARKER(state) && state != VC1_CODE_FIELD && state != VC1_CODE_SLICE){ - pc->frame_start_found=0; - pc->state=-1; - return i-3; - } - } - } - pc->frame_start_found= pic_found; - pc->state= state; - return END_NOT_FOUND; -} - -static int vc1_parse(AVCodecParserContext *s, - AVCodecContext *avctx, - const uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - ParseContext *pc = s->priv_data; - int next; - - if(s->flags & PARSER_FLAG_COMPLETE_FRAMES){ - next= buf_size; - }else{ - next= vc1_find_frame_end(pc, buf, buf_size); - - if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) { - *poutbuf = NULL; - *poutbuf_size = 0; - return buf_size; - } - } - *poutbuf = buf; - *poutbuf_size = buf_size; - return next; -} - -static int vc1_split(AVCodecContext *avctx, - const uint8_t *buf, int buf_size) -{ - int i; - uint32_t state= -1; - - for(i=0; i<buf_size; i++){ - state= (state<<8) | buf[i]; - if(IS_MARKER(state) && state != VC1_CODE_SEQHDR && state != VC1_CODE_ENTRYPOINT) - return i-3; - } - return 0; -} - -AVCodecParser vc1_parser = { - { CODEC_ID_VC1 }, - sizeof(ParseContext1), - NULL, - vc1_parse, - ff_parse1_close, - vc1_split, -}; |