diff options
Diffstat (limited to 'libavcodec/faxcompr.c')
| -rw-r--r-- | libavcodec/faxcompr.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/libavcodec/faxcompr.c b/libavcodec/faxcompr.c index 077e74030e..e7f9d00a11 100644 --- a/libavcodec/faxcompr.c +++ b/libavcodec/faxcompr.c @@ -2,20 +2,20 @@ * CCITT Fax Group 3 and 4 decompression * Copyright (c) 2008 Konstantin Shishkov * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -228,7 +228,7 @@ static int decode_group3_2d_line(AVCodecContext *avctx, GetBitContext *gb, mode = !mode; } //sync line pointers - while(run_off <= offs){ + while(offs < width && run_off <= offs){ run_off += *ref++; run_off += *ref++; } @@ -279,6 +279,7 @@ int ff_ccitt_unpack(AVCodecContext *avctx, int ret; int runsize= avctx->width + 2; int err = 0; + int has_eol; runs = av_malloc(runsize * sizeof(runs[0])); ref = av_malloc(runsize * sizeof(ref[0])); @@ -290,6 +291,8 @@ int ff_ccitt_unpack(AVCodecContext *avctx, ref[1] = 0; ref[2] = 0; init_get_bits(&gb, src, srcsize*8); + has_eol = show_bits(&gb, 12) == 1 || show_bits(&gb, 16) == 1; + for(j = 0; j < height; j++){ runend = runs + runsize; if(compr == TIFF_G4){ @@ -300,7 +303,7 @@ int ff_ccitt_unpack(AVCodecContext *avctx, } }else{ int g3d1 = (compr == TIFF_G3) && !(opts & 1); - if(compr!=TIFF_CCITT_RLE && find_group3_syncmarker(&gb, srcsize*8) < 0) + if(compr!=TIFF_CCITT_RLE && has_eol && find_group3_syncmarker(&gb, srcsize*8) < 0) break; if(compr==TIFF_CCITT_RLE || g3d1 || get_bits1(&gb)) ret = decode_group3_1d_line(avctx, &gb, avctx->width, runs, runend); |