vp9 decode: defer loop filter allocation

wait until do_loopfilter_inline is true before committing the resources

Change-Id: I01661bd40599b47362bb3fb534668471f2a9d8d7

vp9/decoder/vp9_decodframe.c

diff --git a/vp9/decoder/vp9_decodframe.c b/vp9/decoder/vp9_decodframe.c
index 59eebb5..518a784 100644
--- a/vp9/decoder/vp9_decodframe.c
+++ b/vp9/decoder/vp9_decodframe.c
@@ -1118,6 +1118,15 @@
     vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
                        "Truncated packet or corrupt header length");
 
+  if (pbi->do_loopfilter_inline && pbi->lf_worker.data1 == NULL) {
+    CHECK_MEM_ERROR(cm, pbi->lf_worker.data1, vpx_malloc(sizeof(LFWorkerData)));
+    pbi->lf_worker.hook = (VP9WorkerHook)vp9_loop_filter_worker;
+    if (pbi->oxcf.max_threads > 1 && !vp9_worker_reset(&pbi->lf_worker)) {
+      vpx_internal_error(&cm->error, VPX_CODEC_ERROR,
+                         "Loop filter thread creation failed");
+    }
+  }
+
   setup_plane_dequants(cm, &pbi->mb, cm->base_qindex);
 
   xd->mi_8x8 = cm->mi_grid_visible;

vp9/decoder/vp9_onyxd_if.c

diff --git a/vp9/decoder/vp9_onyxd_if.c b/vp9/decoder/vp9_onyxd_if.c
index 03456b8..e206485 100644
--- a/vp9/decoder/vp9_onyxd_if.c
+++ b/vp9/decoder/vp9_onyxd_if.c
@@ -142,13 +142,6 @@
   pbi->decoded_key_frame = 0;
 
   vp9_worker_init(&pbi->lf_worker);
-  pbi->lf_worker.data1 = vpx_malloc(sizeof(LFWorkerData));
-  pbi->lf_worker.hook = (VP9WorkerHook)vp9_loop_filter_worker;
-  if (pbi->lf_worker.data1 == NULL ||
-      (pbi->oxcf.max_threads > 1 && !vp9_worker_reset(&pbi->lf_worker))) {
-    vp9_remove_decompressor(pbi);
-    return NULL;
-  }
 
   return pbi;
 }