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gxfenc: assert that the to be written data has not been truncated. 

Otherwise out of array reads would happen later

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-09-09 14:31:44 +02:00
parent eb336cb881
commit 07108cafc6
1 changed files with 2 additions and 0 deletions
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2
libavformat/gxfenc.c
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@ -19,6 +19,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
#include "libavutil/avassert.h"
#include "libavutil/intfloat.h" #include "libavutil/intfloat.h"
#include "libavutil/opt.h" #include "libavutil/opt.h"
#include "libavutil/mathematics.h" #include "libavutil/mathematics.h"
@ -210,6 +211,7 @@ static int gxf_write_mpeg_auxiliary(AVIOContext *pb, AVStream *st)
(float)st->codec->bit_rate, sc->p_per_gop, sc->b_per_i_or_p, (float)st->codec->bit_rate, sc->p_per_gop, sc->b_per_i_or_p,
st->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1, sc->first_gop_closed == 1, st->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1, sc->first_gop_closed == 1,
starting_line, (st->codec->height + 15) / 16); starting_line, (st->codec->height + 15) / 16);
av_assert0(size < sizeof(buffer));
avio_w8(pb, TRACK_MPG_AUX); avio_w8(pb, TRACK_MPG_AUX);
avio_w8(pb, size + 1); avio_w8(pb, size + 1);
avio_write(pb, (uint8_t *)buffer, size + 1); avio_write(pb, (uint8_t *)buffer, size + 1);