Check available size before writing in decode_frame()

[ffmpeg] / libavcodec / loco.c

diff --git a/libavcodec/loco.c b/libavcodec/loco.c
index 8b261cabc6924326e2dd887976a80f07a59260bd..ad5737ec5b625bfc36c03fae995669dc3d31b5ba 100644 (file)
--- a/libavcodec/loco.c
+++ b/libavcodec/loco.c
@@ -17,7 +17,6 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
  */
 
 /**
@@ -117,7 +116,7 @@ static inline int loco_predict(uint8_t* data, int stride, int step)
 }
 
 static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int height,
-                             int stride, uint8_t *buf, int buf_size, int step)
+                             int stride, const uint8_t *buf, int buf_size, int step)
 {
     RICEContext rc;
     int val;
@@ -153,12 +152,12 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh
         data += stride;
     }
 
-    return ((get_bits_count(&rc.gb) + 7) >> 3);
+    return (get_bits_count(&rc.gb) + 7) >> 3;
 }
 
 static int decode_frame(AVCodecContext *avctx,
                         void *data, int *data_size,
-                        uint8_t *buf, int buf_size)
+                        const uint8_t *buf, int buf_size)
 {
     LOCOContext * const l = avctx->priv_data;
     AVFrame * const p= (AVFrame*)&l->pic;
@@ -226,7 +225,7 @@ static int decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-static int decode_init(AVCodecContext *avctx){
+static av_cold int decode_init(AVCodecContext *avctx){
     LOCOContext * const l = avctx->priv_data;
     int version;
 
@@ -283,4 +282,5 @@ AVCodec loco_decoder = {
     NULL,
     decode_frame,
     CODEC_CAP_DR1,
+    .long_name = NULL_IF_CONFIG_SMALL("LOCO"),
 };