st/va: delay calling begin_frame until we have all parameters

If begin_frame is called before setting intra_matrix and
non_intra_matrix it leads to segmentation faults when
vl_mpeg12_decoder.c is used.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92634
Signed-off-by: Nayan Deshmukh <nayan26deshmukh@gmail.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

diff --git a/src/gallium/state_trackers/va/picture.c b/src/gallium/state_trackers/va/picture.c
index b5b9a83..dc7121c 100644 (file)
--- a/src/gallium/state_trackers/va/picture.c
+++ b/src/gallium/state_trackers/va/picture.c
@@ -178,9 +178,6 @@ handlePictureParameterBuffer(vlVaDriver *drv, vlVaContext *context, vlVaBuffer *
 
       if (!context->decoder)
          return VA_STATUS_ERROR_ALLOCATION_FAILED;
-
-      context->decoder->begin_frame(context->decoder, context->target,
-         &context->desc.base);
    }
 
    return vaStatus;
@@ -310,6 +307,9 @@ handleVASliceDataBufferType(vlVaContext *context, vlVaBuffer *buf)
    buffers[num_buffers] = buf->data;
    sizes[num_buffers] = buf->size;
    ++num_buffers;
+
+   context->decoder->begin_frame(context->decoder, context->target,
+      &context->desc.base);
    context->decoder->decode_bitstream(context->decoder, context->target, &context->desc.base,
       num_buffers, (const void * const*)buffers, sizes);
 }