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update to libvpx b46243d from repo https://chromium.googlesource.com/webm/libvpx

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This commit is contained in:
Mike Jerris
2016-09-26 14:31:51 -04:00
parent 2b1f0da5c4
commit 8c5f0301f3
1008 changed files with 110177 additions and 201326 deletions
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44
libs/libvpx/md5_utils.c
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@@ -20,19 +20,17 @@
* Still in the public domain.
*/
#include <string.h> /* for memcpy() */
#include <string.h> /* for memcpy() */
#include "md5_utils.h"
static void
byteSwap(UWORD32 *buf, unsigned words) {
static void byteSwap(UWORD32 *buf, unsigned words) {
md5byte *p;
/* Only swap bytes for big endian machines */
int i = 1;
if (*(char *)&i == 1)
return;
if (*(char *)&i == 1) return;
p = (md5byte *)buf;
@@ -47,8 +45,7 @@ byteSwap(UWORD32 *buf, unsigned words) {
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
* initialization constants.
*/
void
MD5Init(struct MD5Context *ctx) {
void MD5Init(struct MD5Context *ctx) {
ctx->buf[0] = 0x67452301;
ctx->buf[1] = 0xefcdab89;
ctx->buf[2] = 0x98badcfe;
@@ -62,8 +59,7 @@ MD5Init(struct MD5Context *ctx) {
* Update context to reflect the concatenation of another buffer full
* of bytes.
*/
void
MD5Update(struct MD5Context *ctx, md5byte const *buf, unsigned len) {
void MD5Update(struct MD5Context *ctx, md5byte const *buf, unsigned len) {
UWORD32 t;
/* Update byte count */
@@ -71,9 +67,9 @@ MD5Update(struct MD5Context *ctx, md5byte const *buf, unsigned len) {
t = ctx->bytes[0];
if ((ctx->bytes[0] = t + len) < t)
ctx->bytes[1]++; /* Carry from low to high */
ctx->bytes[1]++; /* Carry from low to high */
t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */
t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */
if (t > len) {
memcpy((md5byte *)ctx->in + 64 - t, buf, len);
@@ -104,8 +100,7 @@ MD5Update(struct MD5Context *ctx, md5byte const *buf, unsigned len) {
* Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
void
MD5Final(md5byte digest[16], struct MD5Context *ctx) {
void MD5Final(md5byte digest[16], struct MD5Context *ctx) {
int count = ctx->bytes[0] & 0x3f; /* Number of bytes in ctx->in */
md5byte *p = (md5byte *)ctx->in + count;
@@ -115,7 +110,7 @@ MD5Final(md5byte digest[16], struct MD5Context *ctx) {
/* Bytes of padding needed to make 56 bytes (-8..55) */
count = 56 - 1 - count;
if (count < 0) { /* Padding forces an extra block */
if (count < 0) { /* Padding forces an extra block */
memset(p, 0, count + 8);
byteSwap(ctx->in, 16);
MD5Transform(ctx->buf, ctx->in);
@@ -147,16 +142,27 @@ MD5Final(md5byte digest[16], struct MD5Context *ctx) {
#define F4(x, y, z) (y ^ (x | ~z))
/* This is the central step in the MD5 algorithm. */
#define MD5STEP(f,w,x,y,z,in,s) \
(w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x)
#define MD5STEP(f, w, x, y, z, in, s) \
(w += f(x, y, z) + in, w = (w << s | w >> (32 - s)) + x)
#if defined(__clang__) && defined(__has_attribute)
#if __has_attribute(no_sanitize)
#define VPX_NO_UNSIGNED_OVERFLOW_CHECK \
__attribute__((no_sanitize("unsigned-integer-overflow")))
#endif
#endif
#ifndef VPX_NO_UNSIGNED_OVERFLOW_CHECK
#define VPX_NO_UNSIGNED_OVERFLOW_CHECK
#endif
/*
* The core of the MD5 algorithm, this alters an existing MD5 hash to
* reflect the addition of 16 longwords of new data. MD5Update blocks
* the data and converts bytes into longwords for this routine.
*/
void
MD5Transform(UWORD32 buf[4], UWORD32 const in[16]) {
VPX_NO_UNSIGNED_OVERFLOW_CHECK void MD5Transform(UWORD32 buf[4],
UWORD32 const in[16]) {
register UWORD32 a, b, c, d;
a = buf[0];
@@ -238,4 +244,6 @@ MD5Transform(UWORD32 buf[4], UWORD32 const in[16]) {
buf[3] += d;
}
#undef VPX_NO_UNSIGNED_OVERFLOW_CHECK
#endif