2023-10-22 11:46:19 CST W43D0

avutil_aes_ctr.go

@@ -0,0 +1,60 @@
+package ffmpeg
+
+/*
+#include <libavutil/aes_ctr.h>
+*/
+import "C"
+
+const (
+	AES_CTR_KEY_SIZE = C.AES_CTR_KEY_SIZE
+	AES_CTR_IV_SIZE  = C.AES_CTR_IV_SIZE
+)
+
+// AVAESCTR
+type AVAESCTR C.struct_AVAESCTR
+
+// AvAesCtrAlloc allocates an AVAESCTR context.
+func AvAesCtrAlloc() *AVAESCTR {
+	return (*AVAESCTR)(C.av_aes_ctr_alloc())
+}
+
+// AvAesCtrInit initializes an AVAESCTR context.
+func AvAesCtrInit(a *AVAESCTR, key *uint8) int32 {
+	return (int32)(C.av_aes_ctr_init((*C.struct_AVAESCTR)(a), (*C.uint8_t)(key)))
+}
+
+// AvAesCtrFree releases an AVAESCTR context.
+func AvAesCtrFree(a *AVAESCTR) {
+	C.av_aes_ctr_free((*C.struct_AVAESCTR)(a))
+}
+
+// AvAesCtrCrypt processes a buffer using a previously initialized context.
+func AvAesCtrCrypt(a *AVAESCTR, dst, src *uint8, size int32) {
+	C.av_aes_ctr_crypt((*C.struct_AVAESCTR)(a),
+		(*C.uint8_t)(dst), (*C.uint8_t)(src), (C.int)(size))
+}
+
+// AvAesCtrGetIv gets the current iv.
+func AvAesCtrGetIv(a *AVAESCTR) *uint8 {
+	return (*uint8)(C.av_aes_ctr_get_iv((*C.struct_AVAESCTR)(a)))
+}
+
+// AvAesCtrSetRandomIv generates a random iv.
+func AvAesCtrSetRandomIv(a *AVAESCTR) {
+	C.av_aes_ctr_set_random_iv((*C.struct_AVAESCTR)(a))
+}
+
+// AvAesCtrSetIv changes the 8-byte iv.
+func AvAesCtrSetIv(a *AVAESCTR, iv *uint8) {
+	C.av_aes_ctr_set_iv((*C.struct_AVAESCTR)(a), (*C.uint8_t)(iv))
+}
+
+// AvAesCtrSetFullIv changes the "full" 16-byte iv, including the counter.
+func AvAesCtrSetFullIv(a *AVAESCTR, iv *uint8) {
+	C.av_aes_ctr_set_full_iv((*C.struct_AVAESCTR)(a), (*C.uint8_t)(iv))
+}
+
+// AvAesCtrIncrementIv increments the top 64 bit of the iv.
+func AvAesCtrIncrementIv(a *AVAESCTR) {
+	C.av_aes_ctr_increment_iv((*C.struct_AVAESCTR)(a))
+}