UINT8 *buf, int buf_size)
{
DVVideoDecodeContext *s = avctx->priv_data;
- int sct, dsf, apt, ds, nb_dif_segs, vs, size, width, height, i;
+ int sct, dsf, apt, ds, nb_dif_segs, vs, size, width, height, i, packet_size;
UINT8 *buf_ptr;
const UINT16 *mb_pos_ptr;
AVPicture *picture;
/* init size */
width = 720;
if (dsf) {
- if (buf_size != PAL_FRAME_SIZE)
- return -1;
+ packet_size = PAL_FRAME_SIZE;
height = 576;
nb_dif_segs = 12;
} else {
- if (buf_size != NTSC_FRAME_SIZE)
- return -1;
+ packet_size = NTSC_FRAME_SIZE;
height = 480;
nb_dif_segs = 10;
}
-
+ /* NOTE: we only accept several full frames */
+ if (buf_size < packet_size)
+ return -1;
+
/* XXX: is it correct to assume that 420 is always used in PAL
mode ? */
s->sampling_411 = !dsf;
picture->data[i] = s->current_picture[i];
picture->linesize[i] = s->linesize[i];
}
-
- return buf_size;
+ return packet_size;
}
static int dvvideo_decode_end(AVCodecContext *avctx)