[FFmpeg-devel] [PATCH v3] avcodec/v4l2_m2m: adapt to call close() on init fail

[Andriy Gelman]

On Sun, 19. Jul 15:49, Andriy Gelman wrote:
> On Sun, 19. Jul 15:36, Andriy Gelman wrote:
> > From: Andriy Gelman <andriy.gelman at gmail.com>
> > 
> > This fixes several mem leaks when init of encoder/decoder failed.
> > 
> > Fixes ticket #8285
> > 
> > Signed-off-by: Andriy Gelman <andriy.gelman at gmail.com>
> > ---
> > 
> > - Changes in v3
> > rebased and moved av_packet_unref(&s->buf_pkt) to v4l2_m2m_destroy_context()
> > to be consistent with another patch
> > 
> >  libavcodec/v4l2_m2m.c     |  6 ++++++
> >  libavcodec/v4l2_m2m_dec.c | 10 ++--------
> >  libavcodec/v4l2_m2m_enc.c |  1 +
> >  3 files changed, 9 insertions(+), 8 deletions(-)
> > 
> > diff --git a/libavcodec/v4l2_m2m.c b/libavcodec/v4l2_m2m.c
> > index d8d872ea09..944c1a2823 100644
> > --- a/libavcodec/v4l2_m2m.c
> > +++ b/libavcodec/v4l2_m2m.c
> > @@ -330,6 +330,7 @@ static void v4l2_m2m_destroy_context(void *opaque, uint8_t *context)
> >  
> >      close(s->fd);
> >      av_frame_free(&s->frame);
> > +    av_packet_unref(&s->buf_pkt);
> >  
> >      av_free(s);
> >  }
> > @@ -339,6 +340,10 @@ int ff_v4l2_m2m_codec_end(V4L2m2mPriv *priv)
> >      V4L2m2mContext *s = priv->context;
> >      int ret;
> >  
> > +    if (!s)
> > +        return 0;
> > +
> > +    if (s->fd >= 0) {
> >      ret = ff_v4l2_context_set_status(&s->output, VIDIOC_STREAMOFF);
> >      if (ret)
> >          av_log(s->avctx, AV_LOG_ERROR, "VIDIOC_STREAMOFF %s\n", s->output.name);
> > @@ -346,6 +351,7 @@ int ff_v4l2_m2m_codec_end(V4L2m2mPriv *priv)
> >      ret = ff_v4l2_context_set_status(&s->capture, VIDIOC_STREAMOFF);
> >      if (ret)
> >          av_log(s->avctx, AV_LOG_ERROR, "VIDIOC_STREAMOFF %s\n", s->capture.name);
> > +    }
> >  
> >      ff_v4l2_context_release(&s->output);
> >  
> > diff --git a/libavcodec/v4l2_m2m_dec.c b/libavcodec/v4l2_m2m_dec.c
> > index b038efed9c..ab07c0a24a 100644
> > --- a/libavcodec/v4l2_m2m_dec.c
> > +++ b/libavcodec/v4l2_m2m_dec.c
> > @@ -205,9 +205,6 @@ static av_cold int v4l2_decode_init(AVCodecContext *avctx)
> >      ret = ff_v4l2_m2m_codec_init(priv);
> >      if (ret) {
> >          av_log(avctx, AV_LOG_ERROR, "can't configure decoder\n");
> > -        s->self_ref = NULL;
> > -        av_buffer_unref(&priv->context_ref);
> > -
> >          return ret;
> >      }
> >  
> > @@ -216,10 +213,7 @@ static av_cold int v4l2_decode_init(AVCodecContext *avctx)
> >  
> >  static av_cold int v4l2_decode_close(AVCodecContext *avctx)
> >  {
> > -    V4L2m2mPriv *priv = avctx->priv_data;
> > -    V4L2m2mContext *s = priv->context;
> > -    av_packet_unref(&s->buf_pkt);
> > -    return ff_v4l2_m2m_codec_end(priv);
> > +    return ff_v4l2_m2m_codec_end(avctx->priv_data);
> >  }
> >  
> >  #define OFFSET(x) offsetof(V4L2m2mPriv, x)
> > @@ -254,7 +248,7 @@ static const AVOption options[] = {
> >          .close          = v4l2_decode_close, \
> >          .bsfs           = bsf_name, \
> >          .capabilities   = AV_CODEC_CAP_HARDWARE | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING, \
> > -        .caps_internal  = FF_CODEC_CAP_SETS_PKT_DTS, \
> > +        .caps_internal  = FF_CODEC_CAP_SETS_PKT_DTS | FF_CODEC_CAP_INIT_CLEANUP, \
> >          .wrapper_name   = "v4l2m2m", \
> >      }
> >  
> > diff --git a/libavcodec/v4l2_m2m_enc.c b/libavcodec/v4l2_m2m_enc.c
> > index 56df4286ad..af0ed1e306 100644
> > --- a/libavcodec/v4l2_m2m_enc.c
> > +++ b/libavcodec/v4l2_m2m_enc.c
> > @@ -429,6 +429,7 @@ static const AVCodecDefault v4l2_m2m_defaults[] = {
> >          .close          = v4l2_encode_close, \
> >          .defaults       = v4l2_m2m_defaults, \
> >          .capabilities   = AV_CODEC_CAP_HARDWARE | AV_CODEC_CAP_DELAY, \
> > +        .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP, \
> >          .wrapper_name   = "v4l2m2m", \
> >      }
> >  
> 
> Will apply this version soon if no one objects.
> 

Applied.

-- 
Andriy