diff options
Diffstat (limited to '3rdparty/libflac/src/libFLAC/md5.c')
-rw-r--r-- | 3rdparty/libflac/src/libFLAC/md5.c | 424 |
1 files changed, 0 insertions, 424 deletions
diff --git a/3rdparty/libflac/src/libFLAC/md5.c b/3rdparty/libflac/src/libFLAC/md5.c deleted file mode 100644 index af350e01d16..00000000000 --- a/3rdparty/libflac/src/libFLAC/md5.c +++ /dev/null @@ -1,424 +0,0 @@ -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <stdlib.h> /* for malloc() */ -#include <string.h> /* for memcpy() */ - -#include "private/md5.h" -#include "share/alloc.h" - -#ifndef FLaC__INLINE -#define FLaC__INLINE -#endif - -/* - * This code implements the MD5 message-digest algorithm. - * The algorithm is due to Ron Rivest. This code was - * written by Colin Plumb in 1993, no copyright is claimed. - * This code is in the public domain; do with it what you wish. - * - * Equivalent code is available from RSA Data Security, Inc. - * This code has been tested against that, and is equivalent, - * except that you don't need to include two pages of legalese - * with every copy. - * - * To compute the message digest of a chunk of bytes, declare an - * MD5Context structure, pass it to MD5Init, call MD5Update as - * needed on buffers full of bytes, and then call MD5Final, which - * will fill a supplied 16-byte array with the digest. - * - * Changed so as no longer to depend on Colin Plumb's `usual.h' header - * definitions; now uses stuff from dpkg's config.h. - * - Ian Jackson <ijackson@nyx.cs.du.edu>. - * Still in the public domain. - * - * Josh Coalson: made some changes to integrate with libFLAC. - * Still in the public domain. - */ - -/* The four core functions - F1 is optimized somewhat */ - -/* #define F1(x, y, z) (x & y | ~x & z) */ -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#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) - -/* - * 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. - */ -static void FLAC__MD5Transform(FLAC__uint32 buf[4], FLAC__uint32 const in[16]) -{ - register FLAC__uint32 a, b, c, d; - - a = buf[0]; - b = buf[1]; - c = buf[2]; - d = buf[3]; - - MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); - MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); - MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); - MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); - MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); - MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); - MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); - MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); - MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); - MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); - MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); - MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); - MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); - MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); - MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); - MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); - - MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); - MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); - MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); - MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); - MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); - MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); - MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); - MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); - MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); - MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); - MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); - MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); - MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); - MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); - MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); - MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); - - MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); - MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); - MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); - MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); - MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); - MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); - MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); - MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); - MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); - MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); - MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); - MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); - MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); - MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); - MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); - MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); - - MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); - MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); - MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); - MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); - MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); - MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); - MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); - MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); - MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); - MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); - MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); - MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); - MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); - MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); - MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); - MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - -#if WORDS_BIGENDIAN -//@@@@@@ OPT: use bswap/intrinsics -static void byteSwap(FLAC__uint32 *buf, unsigned words) -{ - register FLAC__uint32 x; - do { - x = *buf; - x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); - *buf++ = (x >> 16) | (x << 16); - } while (--words); -} -static void byteSwapX16(FLAC__uint32 *buf) -{ - register FLAC__uint32 x; - - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf++ = (x >> 16) | (x << 16); - x = *buf; x = ((x << 8) & 0xff00ff00) | ((x >> 8) & 0x00ff00ff); *buf = (x >> 16) | (x << 16); -} -#else -#define byteSwap(buf, words) -#define byteSwapX16(buf) -#endif - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -static void FLAC__MD5Update(FLAC__MD5Context *ctx, FLAC__byte const *buf, unsigned len) -{ - FLAC__uint32 t; - - /* Update byte count */ - - t = ctx->bytes[0]; - if ((ctx->bytes[0] = t + len) < t) - ctx->bytes[1]++; /* Carry from low to high */ - - t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */ - if (t > len) { - memcpy((FLAC__byte *)ctx->in + 64 - t, buf, len); - return; - } - /* First chunk is an odd size */ - memcpy((FLAC__byte *)ctx->in + 64 - t, buf, t); - byteSwapX16(ctx->in); - FLAC__MD5Transform(ctx->buf, ctx->in); - buf += t; - len -= t; - - /* Process data in 64-byte chunks */ - while (len >= 64) { - memcpy(ctx->in, buf, 64); - byteSwapX16(ctx->in); - FLAC__MD5Transform(ctx->buf, ctx->in); - buf += 64; - len -= 64; - } - - /* Handle any remaining bytes of data. */ - memcpy(ctx->in, buf, len); -} - -/* - * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious - * initialization constants. - */ -void FLAC__MD5Init(FLAC__MD5Context *ctx) -{ - ctx->buf[0] = 0x67452301; - ctx->buf[1] = 0xefcdab89; - ctx->buf[2] = 0x98badcfe; - ctx->buf[3] = 0x10325476; - - ctx->bytes[0] = 0; - ctx->bytes[1] = 0; - - ctx->internal_buf = 0; - ctx->capacity = 0; -} - -/* - * Final wrapup - pad to 64-byte boundary with the bit pattern - * 1 0* (64-bit count of bits processed, MSB-first) - */ -void FLAC__MD5Final(FLAC__byte digest[16], FLAC__MD5Context *ctx) -{ - int count = ctx->bytes[0] & 0x3f; /* Number of bytes in ctx->in */ - FLAC__byte *p = (FLAC__byte *)ctx->in + count; - - /* Set the first char of padding to 0x80. There is always room. */ - *p++ = 0x80; - - /* Bytes of padding needed to make 56 bytes (-8..55) */ - count = 56 - 1 - count; - - if (count < 0) { /* Padding forces an extra block */ - memset(p, 0, count + 8); - byteSwapX16(ctx->in); - FLAC__MD5Transform(ctx->buf, ctx->in); - p = (FLAC__byte *)ctx->in; - count = 56; - } - memset(p, 0, count); - byteSwap(ctx->in, 14); - - /* Append length in bits and transform */ - ctx->in[14] = ctx->bytes[0] << 3; - ctx->in[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29; - FLAC__MD5Transform(ctx->buf, ctx->in); - - byteSwap(ctx->buf, 4); - memcpy(digest, ctx->buf, 16); - if(0 != ctx->internal_buf) { - free(ctx->internal_buf); - ctx->internal_buf = 0; - ctx->capacity = 0; - } - memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */ -} - -/* - * Convert the incoming audio signal to a byte stream - */ -static void format_input_(FLAC__byte *buf, const FLAC__int32 * const signal[], unsigned channels, unsigned samples, unsigned bytes_per_sample) -{ - unsigned channel, sample; - register FLAC__int32 a_word; - register FLAC__byte *buf_ = buf; - -#if WORDS_BIGENDIAN -#else - if(channels == 2 && bytes_per_sample == 2) { - FLAC__int16 *buf1_ = ((FLAC__int16*)buf_) + 1; - memcpy(buf_, signal[0], sizeof(FLAC__int32) * samples); - for(sample = 0; sample < samples; sample++, buf1_+=2) - *buf1_ = (FLAC__int16)signal[1][sample]; - } - else if(channels == 1 && bytes_per_sample == 2) { - FLAC__int16 *buf1_ = (FLAC__int16*)buf_; - for(sample = 0; sample < samples; sample++) - *buf1_++ = (FLAC__int16)signal[0][sample]; - } - else -#endif - if(bytes_per_sample == 2) { - if(channels == 2) { - for(sample = 0; sample < samples; sample++) { - a_word = signal[0][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - a_word = signal[1][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - else if(channels == 1) { - for(sample = 0; sample < samples; sample++) { - a_word = signal[0][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - else { - for(sample = 0; sample < samples; sample++) { - for(channel = 0; channel < channels; channel++) { - a_word = signal[channel][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - } - } - else if(bytes_per_sample == 3) { - if(channels == 2) { - for(sample = 0; sample < samples; sample++) { - a_word = signal[0][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - a_word = signal[1][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - else if(channels == 1) { - for(sample = 0; sample < samples; sample++) { - a_word = signal[0][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - else { - for(sample = 0; sample < samples; sample++) { - for(channel = 0; channel < channels; channel++) { - a_word = signal[channel][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - } - } - else if(bytes_per_sample == 1) { - if(channels == 2) { - for(sample = 0; sample < samples; sample++) { - a_word = signal[0][sample]; - *buf_++ = (FLAC__byte)a_word; - a_word = signal[1][sample]; - *buf_++ = (FLAC__byte)a_word; - } - } - else if(channels == 1) { - for(sample = 0; sample < samples; sample++) { - a_word = signal[0][sample]; - *buf_++ = (FLAC__byte)a_word; - } - } - else { - for(sample = 0; sample < samples; sample++) { - for(channel = 0; channel < channels; channel++) { - a_word = signal[channel][sample]; - *buf_++ = (FLAC__byte)a_word; - } - } - } - } - else { /* bytes_per_sample == 4, maybe optimize more later */ - for(sample = 0; sample < samples; sample++) { - for(channel = 0; channel < channels; channel++) { - a_word = signal[channel][sample]; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; a_word >>= 8; - *buf_++ = (FLAC__byte)a_word; - } - } - } -} - -/* - * Convert the incoming audio signal to a byte stream and FLAC__MD5Update it. - */ -FLAC__bool FLAC__MD5Accumulate(FLAC__MD5Context *ctx, const FLAC__int32 * const signal[], unsigned channels, unsigned samples, unsigned bytes_per_sample) -{ - const size_t bytes_needed = (size_t)channels * (size_t)samples * (size_t)bytes_per_sample; - - /* overflow check */ - if((size_t)channels > SIZE_MAX / (size_t)bytes_per_sample) - return false; - if((size_t)channels * (size_t)bytes_per_sample > SIZE_MAX / (size_t)samples) - return false; - - if(ctx->capacity < bytes_needed) { - FLAC__byte *tmp = (FLAC__byte*)realloc(ctx->internal_buf, bytes_needed); - if(0 == tmp) { - free(ctx->internal_buf); - if(0 == (ctx->internal_buf = (FLAC__byte*)safe_malloc_(bytes_needed))) - return false; - } - ctx->internal_buf = tmp; - ctx->capacity = bytes_needed; - } - - format_input_(ctx->internal_buf, signal, channels, samples, bytes_per_sample); - - FLAC__MD5Update(ctx, ctx->internal_buf, bytes_needed); - - return true; -} |