[FFmpeg-trac] #7931(avcodec:open): exr conversion fails

[FFmpeg]

#7931: exr conversion fails
-------------------------------------+-----------------------------------
             Reporter:  p0las        |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  exr          |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  undetermined => avcodec
 * priority:  normal => wish
 * version:  4.1 => git-master
 * keywords:   => exr
 * type:  defect => enhancement


Comment:

 The following does not fix decoding:
 {{{
 diff --git a/libavcodec/exr.c b/libavcodec/exr.c
 index 0f8b0fda9f..9f7a068028 100644
 --- a/libavcodec/exr.c
 +++ b/libavcodec/exr.c
 @@ -134,8 +134,8 @@ typedef struct EXRContext {
      const AVPixFmtDescriptor *desc;

      int w, h;
 -    uint32_t xmax, xmin;
 -    uint32_t ymax, ymin;
 +    int32_t xmax, xmin;
 +    int32_t ymax, ymin;
      uint32_t xdelta, ydelta;

      int scan_lines_per_block;
 @@ -1735,8 +1735,8 @@ static int decode_frame(AVCodecContext *avctx, void
 *data,
      if (s->xmin > s->xmax                  ||
          s->ymin > s->ymax                  ||
          s->xdelta != s->xmax - s->xmin + 1 ||
 -        s->xmax >= s->w                    ||
 -        s->ymax >= s->h) {
 +        s->xmax > s->w                    ||
 +        s->ymax > s->h) {
          av_log(avctx, AV_LOG_ERROR, "Wrong or missing size
 information.\n");
          return AVERROR_INVALIDDATA;
      }

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7931#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker