diff options
Diffstat (limited to 'libavcodec/txd.c')
| -rw-r--r-- | libavcodec/txd.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/libavcodec/txd.c b/libavcodec/txd.c index db1d954..8b20475 100644 --- a/libavcodec/txd.c +++ b/libavcodec/txd.c @@ -4,27 +4,27 @@ * * See also: http://wiki.multimedia.cx/index.php?title=TXD * - * 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 */ #include "libavutil/intreadwrite.h" #include "libavutil/imgutils.h" -#include "avcodec.h" #include "bytestream.h" +#include "avcodec.h" #include "internal.h" #include "texturedsp.h" @@ -75,10 +75,8 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, avctx->coded_width = FFALIGN(w, 4); avctx->coded_height = FFALIGN(h, 4); - if ((ret = ff_get_buffer(avctx, p, 0)) < 0) { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + if ((ret = ff_get_buffer(avctx, p, 0)) < 0) return ret; - } p->pict_type = AV_PICTURE_TYPE_I; @@ -91,6 +89,8 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, v = bytestream2_get_be32(&gb); pal[y] = (v >> 8) + (v << 24); } + if (bytestream2_get_bytes_left(&gb) < w * h) + return AVERROR_INVALIDDATA; bytestream2_skip(&gb, 4); for (y=0; y<h; y++) { bytestream2_get_buffer(&gb, ptr, w); @@ -103,6 +103,8 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, if (!(flags & 1)) goto unsupported; case TXD_DXT1: + if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 8) + return AVERROR_INVALIDDATA; for (j = 0; j < avctx->height; j += 4) { for (i = 0; i < avctx->width; i += 4) { uint8_t *p = ptr + i * 4 + j * stride; @@ -112,6 +114,8 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, } break; case TXD_DXT3: + if (bytestream2_get_bytes_left(&gb) < AV_CEIL_RSHIFT(w, 2) * AV_CEIL_RSHIFT(h, 2) * 16) + return AVERROR_INVALIDDATA; for (j = 0; j < avctx->height; j += 4) { for (i = 0; i < avctx->width; i += 4) { uint8_t *p = ptr + i * 4 + j * stride; @@ -127,6 +131,8 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, switch (d3d_format) { case 0x15: case 0x16: + if (bytestream2_get_bytes_left(&gb) < h * w * 4) + return AVERROR_INVALIDDATA; for (y=0; y<h; y++) { bytestream2_get_buffer(&gb, ptr, w * 4); ptr += stride; |
