shithub: dav1d

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ref: 9e73bb8f42673674c6ddf1e87e72f2c7edaec52e
parent: 60cc1b8b9eab94545d9a41dca25b123da924442b
author: Derek Buitenhuis <[email protected]>
date: Tue Oct 2 09:30:32 EDT 2018

ref_mvs: Check malloc in av1_init_ref_mv_common and propagate error

Signed-off-by: Derek Buitenhuis <[email protected]>

--- a/src/decode.c
+++ b/src/decode.c
@@ -2405,13 +2405,14 @@
     if ((f->frame_hdr.frame_type & 1) || f->frame_hdr.allow_intrabc) {
         f->mvs = f->mvs_ref->data;
         const int order_hint_n_bits = f->seq_hdr.order_hint * f->seq_hdr.order_hint_n_bits;
-        av1_init_ref_mv_common(f->libaom_cm, f->bw >> 1, f->bh >> 1,
-                               f->b4_stride, f->seq_hdr.sb128,
-                               f->mvs, f->ref_mvs, f->cur.p.poc, f->refpoc,
-                               f->refrefpoc, f->frame_hdr.gmv,
-                               f->frame_hdr.hp, f->frame_hdr.force_integer_mv,
-                               f->frame_hdr.use_ref_frame_mvs,
-                               order_hint_n_bits);
+        const int ret = av1_init_ref_mv_common(f->libaom_cm, f->bw >> 1, f->bh >> 1,
+                                               f->b4_stride, f->seq_hdr.sb128,
+                                               f->mvs, f->ref_mvs, f->cur.p.poc, f->refpoc,
+                                               f->refrefpoc, f->frame_hdr.gmv,
+                                               f->frame_hdr.hp, f->frame_hdr.force_integer_mv,
+                                               f->frame_hdr.use_ref_frame_mvs,
+                                               order_hint_n_bits);
+        if (ret < 0) return -ENOMEM;
         if (c->n_fc == 1 && f->frame_hdr.use_ref_frame_mvs)
             av1_init_ref_mv_tile_row(f->libaom_cm, 0, f->bw, 0, f->bh);
     }
--- a/src/ref_mvs.c
+++ b/src/ref_mvs.c
@@ -48,6 +48,7 @@
 #include "config.h"
 
 #include <assert.h>
+#include <errno.h>
 #include <limits.h>
 #include <stddef.h>
 #include <stdint.h>
@@ -3468,25 +3469,26 @@
     }
 }
 
-void av1_init_ref_mv_common(AV1_COMMON *cm,
-                            const int w8, const int h8,
-                            const ptrdiff_t stride,
-                            const int allow_sb128,
-                            MV_REF *cur,
-                            MV_REF *ref_mvs[7],
-                            const unsigned cur_poc,
-                            const unsigned ref_poc[7],
-                            const unsigned ref_ref_poc[7][7],
-                            const WarpedMotionParams gmv[7],
-                            const int allow_hp,
-                            const int force_int_mv,
-                            const int allow_ref_frame_mvs,
-                            const int order_hint)
+int av1_init_ref_mv_common(AV1_COMMON *cm,
+                           const int w8, const int h8,
+                           const ptrdiff_t stride,
+                           const int allow_sb128,
+                           MV_REF *cur,
+                           MV_REF *ref_mvs[7],
+                           const unsigned cur_poc,
+                           const unsigned ref_poc[7],
+                           const unsigned ref_ref_poc[7][7],
+                           const WarpedMotionParams gmv[7],
+                           const int allow_hp,
+                           const int force_int_mv,
+                           const int allow_ref_frame_mvs,
+                           const int order_hint)
 {
     if (cm->mi_cols != (w8 << 1) || cm->mi_rows != (h8 << 1)) {
         const int align_h = (h8 + 15) & ~15;
         if (cm->tpl_mvs) free(cm->tpl_mvs);
         cm->tpl_mvs = malloc(sizeof(*cm->tpl_mvs) * (stride >> 1) * align_h);
+        if (!cm->tpl_mvs) return -ENOMEM;
         for (int i = 0; i < 7; i++)
             cm->frame_refs[i].idx = i;
         cm->mi_cols = w8 << 1;
@@ -3528,6 +3530,8 @@
         cm->ref_frame_sign_bias[1 + i] = get_relative_dist(cm, ref_poc, cur_poc) > 0;
     }
     av1_setup_motion_field(cm);
+
+    return 0;
 }
 
 void av1_init_ref_mv_tile_row(AV1_COMMON *cm,
--- a/src/ref_mvs.h
+++ b/src/ref_mvs.h
@@ -36,18 +36,18 @@
 void av1_free_ref_mv_common(AV1_COMMON *cm);
 
 // call once per frame
-void av1_init_ref_mv_common(AV1_COMMON *cm,
-                            int w8, int h8,
-                            ptrdiff_t stride,
-                            int allow_sb128,
-                            refmvs *cur,
-                            refmvs *ref_mvs[7],
-                            unsigned cur_poc,
-                            const unsigned ref_poc[7],
-                            const unsigned ref_ref_poc[7][7],
-                            const WarpedMotionParams gmv[7],
-                            int allow_hp, int force_int_mv,
-                            int allow_ref_frame_mvs, int order_hint);
+int av1_init_ref_mv_common(AV1_COMMON *cm,
+                           int w8, int h8,
+                           ptrdiff_t stride,
+                           int allow_sb128,
+                           refmvs *cur,
+                           refmvs *ref_mvs[7],
+                           unsigned cur_poc,
+                           const unsigned ref_poc[7],
+                           const unsigned ref_ref_poc[7][7],
+                           const WarpedMotionParams gmv[7],
+                           int allow_hp, int force_int_mv,
+                           int allow_ref_frame_mvs, int order_hint);
 
 // call for start of each sbrow per tile
 void av1_init_ref_mv_tile_row(AV1_COMMON *cm,