X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Frc4.c;h=36b0de9f534e21d8a2591acce388c488c7699e56;hb=a86ef80494d759807a5ef8dd12838f0690092e37;hp=e6e7dc9e1a1f4c218cf57bdaadd2aee6989fc539;hpb=1a534c7f1e2cf672bbdd800e229cfe34eb089cc5;p=ffmpeg

diff --git a/libavutil/rc4.c b/libavutil/rc4.c
index e6e7dc9e1a1..36b0de9f534 100644
--- a/libavutil/rc4.c
+++ b/libavutil/rc4.c
@@ -4,27 +4,38 @@
  *
  * loosely based on LibTomCrypt by Tom St Denis
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include "avutil.h"
 #include "common.h"
+#include "mem.h"
 #include "rc4.h"
 
-typedef struct AVRC4 AVRC4;
+#if !FF_API_CRYPTO_CONTEXT
+struct AVRC4 {
+    uint8_t state[256];
+    int x, y;
+};
+#endif
+
+AVRC4 *av_rc4_alloc(void)
+{
+    return av_mallocz(sizeof(struct AVRC4));
+}
 
 int av_rc4_init(AVRC4 *r, const uint8_t *key, int key_bits, int decrypt) {
     int i, j;
@@ -59,11 +70,3 @@ void av_rc4_crypt(AVRC4 *r, uint8_t *dst, const uint8_t *src, int count, uint8_t
     }
     r->x = x; r->y = y;
 }
-
-#if LIBAVUTIL_VERSION_MAJOR < 50
-void ff_rc4_enc(const uint8_t *key, int keylen, uint8_t *data, int datalen) {
-    AVRC4 r;
-    av_rc4_init(&r, key, keylen * 8, 0);
-    av_rc4_crypt(&r, data, data, datalen, NULL, 0);
-}
-#endif