[FFmpeg-devel] [PATCH 1/4] blowfish: add av_blowfish_alloc()

[James Almer]

Signed-off-by: James Almer <jamrial at gmail.com>
---
 doc/APIchanges       |  3 +++
 libavutil/blowfish.c | 15 +++++++++++++++
 libavutil/blowfish.h | 10 ++++++++++
 libavutil/version.h  |  5 ++++-
 4 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index 29e9da9..d222fc6 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil:     2014-08-09
 
 API changes, most recent first:
 
+2015-xx-xx - lavu 54.30.0
+  xxxxxxx -  Add av_blowfish_alloc().
+
 2015-xx-xx - lavc 56.35.0 - avcodec.h
   xxxxxxxxx - Rename CODEC_FLAG* defines to AV_CODEC_FLAG*.
   xxxxxxxxx - Rename CODEC_CAP_* defines to AV_CODEC_CAP_*.
diff --git a/libavutil/blowfish.c b/libavutil/blowfish.c
index 3821427..4f7e4df 100644
--- a/libavutil/blowfish.c
+++ b/libavutil/blowfish.c
@@ -24,8 +24,18 @@
 #include "avutil.h"
 #include "common.h"
 #include "intreadwrite.h"
+#include "mem.h"
 #include "blowfish.h"
 
+#if !FF_API_CRYPTO_CONTEXT
+#define AV_BF_ROUNDS 16
+
+struct AVBlowfish {
+    uint32_t p[AV_BF_ROUNDS + 2];
+    uint32_t s[4][256];
+};
+#endif
+
 static const uint32_t orig_p[AV_BF_ROUNDS + 2] = {
     0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344,
     0xA4093822, 0x299F31D0, 0x082EFA98, 0xEC4E6C89,
@@ -300,6 +310,11 @@ static const uint32_t orig_s[4][256] = {
            + ctx->s[3][ Xl        & 0xFF])\
            ^ P;
 
+AVBlowfish *av_blowfish_alloc(void)
+{
+    return av_mallocz(sizeof(struct AVBlowfish));
+}
+
 av_cold void av_blowfish_init(AVBlowfish *ctx, const uint8_t *key, int key_len)
 {
     uint32_t data, data_l, data_r;
diff --git a/libavutil/blowfish.h b/libavutil/blowfish.h
index 0b00453..d163fd3 100644
--- a/libavutil/blowfish.h
+++ b/libavutil/blowfish.h
@@ -23,6 +23,7 @@
 #define AVUTIL_BLOWFISH_H
 
 #include <stdint.h>
+#include "version.h"
 
 /**
  * @defgroup lavu_blowfish Blowfish
@@ -30,12 +31,21 @@
  * @{
  */
 
+#if FF_API_CRYPTO_CONTEXT
 #define AV_BF_ROUNDS 16
 
 typedef struct AVBlowfish {
     uint32_t p[AV_BF_ROUNDS + 2];
     uint32_t s[4][256];
 } AVBlowfish;
+#else
+typedef struct AVBlowfish AVBlowfish;
+#endif
+
+/**
+ * Allocate an AVBlowfish context.
+ */
+AVBlowfish *av_blowfish_alloc(void);
 
 /**
  * Initialize an AVBlowfish context.
diff --git a/libavutil/version.h b/libavutil/version.h
index b10f3e1..653f530 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -56,7 +56,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  54
-#define LIBAVUTIL_VERSION_MINOR  29
+#define LIBAVUTIL_VERSION_MINOR  30
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
@@ -125,6 +125,9 @@
 #ifndef FF_API_HMAC
 #define FF_API_HMAC                     (LIBAVUTIL_VERSION_MAJOR < 55)
 #endif
+#ifndef FF_API_CRYPTO_CONTEXT
+#define FF_API_CRYPTO_CONTEXT           (LIBAVUTIL_VERSION_MAJOR < 56)
+#endif
 
 #ifndef FF_CONST_AVUTIL55
 #if LIBAVUTIL_VERSION_MAJOR >= 55
-- 
2.5.0