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add .gitattributes and standardize paths

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This commit is contained in:
Mark W. Kidd 2019-02-08 12:54:33 -05:00
parent 133ef799e0
commit d18e7f1d2c
105 changed files with 1297 additions and 1284 deletions
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14
.gitattributes vendored Normal file
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@ -0,0 +1,14 @@
# Set the default behavior, in case people don't have core.autocrlf set.
* text=auto
# Declare files that will always have LF Unix-style line endings on checkout.
*.c text eol=lf
*.h text eol=lf
*.in text eol=lf
# Denote all files that are truly binary and should not be modified.
*.png binary
*.jpg binary
*.zip binary
*.cfg binary
*.nv binary

35
Makefile.common
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@ -7,7 +7,7 @@ INCFLAGS := \
-I$(CORE_DIR)/cpu/m68000 \
-I$(CORE_DIR)/mame2003 \
-I$(LIBRETRO_COMM_DIR)/include \
-I$(CORE_DIR)/lib/libFLAC/include \
-I$(CORE_DIR)/libretro-deps/libFLAC/include \
-I$(CORE_DIR)/lib/mame-chd \
-I$(CORE_DIR)/lib/zlib
@ -2601,24 +2601,24 @@ endif
SOURCES_C += \
$(CORE_DIR)/lib/mame-chd/chd.c \
$(CORE_DIR)/lib/mame-chd/libchdr_sha1.c
$(CORE_DIR)/lib/mame-chd/mame_sha1.c
SOURCES_C += \
$(CORE_DIR)/lib/libFLAC/bitmath.c \
$(CORE_DIR)/lib/libFLAC/bitreader.c \
$(CORE_DIR)/lib/libFLAC/bitwriter.c \
$(CORE_DIR)/lib/libFLAC/cpu.c \
$(CORE_DIR)/lib/libFLAC/crc.c \
$(CORE_DIR)/lib/libFLAC/fixed.c \
$(CORE_DIR)/lib/libFLAC/float.c \
$(CORE_DIR)/lib/libFLAC/format.c \
$(CORE_DIR)/lib/libFLAC/lpc.c \
$(CORE_DIR)/lib/libFLAC/md5.c \
$(CORE_DIR)/lib/libFLAC/memory.c \
$(CORE_DIR)/lib/libFLAC/stream_decoder.c \
$(CORE_DIR)/lib/libFLAC/stream_encoder.c \
$(CORE_DIR)/lib/libFLAC/stream_encoder_framing.c \
$(CORE_DIR)/lib/libFLAC/window.c
$(CORE_DIR)/libretro-deps/libFLAC/bitmath.c \
$(CORE_DIR)/libretro-deps/libFLAC/bitreader.c \
$(CORE_DIR)/libretro-deps/libFLAC/bitwriter.c \
$(CORE_DIR)/libretro-deps/libFLAC/cpu.c \
$(CORE_DIR)/libretro-deps/libFLAC/crc.c \
$(CORE_DIR)/libretro-deps/libFLAC/fixed.c \
$(CORE_DIR)/libretro-deps/libFLAC/float.c \
$(CORE_DIR)/libretro-deps/libFLAC/format.c \
$(CORE_DIR)/libretro-deps/libFLAC/lpc.c \
$(CORE_DIR)/libretro-deps/libFLAC/md5.c \
$(CORE_DIR)/libretro-deps/libFLAC/memory.c \
$(CORE_DIR)/libretro-deps/libFLAC/stream_decoder.c \
$(CORE_DIR)/libretro-deps/libFLAC/stream_encoder.c \
$(CORE_DIR)/libretro-deps/libFLAC/stream_encoder_framing.c \
$(CORE_DIR)/libretro-deps/libFLAC/window.c
ifeq ($(STATIC_LINKING),1)
else
@ -2633,7 +2633,6 @@ SOURCES_C += \
$(LIBRETRO_COMM_DIR)/streams/file_stream.c \
$(LIBRETRO_COMM_DIR)/string/stdstring.c \
$(LIBRETRO_COMM_DIR)/utils/md5.c \
$(LIBRETRO_COMM_DIR)/utils/sha1.c \
$(LIBRETRO_COMM_DIR)/vfs/vfs_implementation.c \
$(CORE_DIR)/lib/zlib/adler32.c \
$(CORE_DIR)/lib/zlib/compress.c \

2
src/common.c
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@ -11,7 +11,7 @@
#include <stdarg.h>
#include <ctype.h>
#include <string/stdstring.h>
#include "lib/libFLAC/include/FLAC/all.h"
#include "libretro-deps/libFLAC/include/FLAC/all.h"
#include "log.h"
//#define LOG_LOAD

2
src/hash.c
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@ -131,7 +131,7 @@
#include <zlib.h>
#include "hash.h"
#include <utils/md5.h>
#include <utils/sha1.h>
#include "mame_sha1.h"
#include "osd_cpu.h"
#include "mame.h"
#include "common.h"

2
src/lib/mame-chd/chd.c
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@ -7,7 +7,7 @@
#include <chd.h>
#include <retro_inline.h>
#include <utils/md5.h>
#include <utils/sha1.h>
#include "mame_sha1.h"
#include <zlib.h>
#include <time.h>
#include <string.h>

772
src/lib/mame-chd/libchdr_sha1.c → src/lib/mame-chd/mame_sha1.c
View File

@ -1,386 +1,386 @@
/* sha1.h
*
* The sha1 hash function.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 Peter Gutmann, Andrew Kuchling, Niels M?ller
*
* The nettle library 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.
*
* The nettle library 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 the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include <utils/sha1.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
unsigned int READ_UINT32(const uint8_t* data)
{
return ((uint32_t)data[0] << 24) |
((uint32_t)data[1] << 16) |
((uint32_t)data[2] << 8) |
((uint32_t)data[3]);
}
void WRITE_UINT32(unsigned char* data, uint32_t val)
{
data[0] = (val >> 24) & 0xFF;
data[1] = (val >> 16) & 0xFF;
data[2] = (val >> 8) & 0xFF;
data[3] = (val >> 0) & 0xFF;
}
/* A block, treated as a sequence of 32-bit words. */
#define SHA1_DATA_LENGTH 16
/* The SHA f()-functions. The f1 and f3 functions can be optimized to
save one boolean operation each - thanks to Rich Schroeppel,
rcs@cs.arizona.edu for discovering this */
/* #define f1(x,y,z) ( ( x & y ) | ( ~x & z ) ) Rounds 0-19 */
#define f1(x,y,z) ( z ^ ( x & ( y ^ z ) ) ) /* Rounds 0-19 */
#define f2(x,y,z) ( x ^ y ^ z ) /* Rounds 20-39 */
/* #define f3(x,y,z) ( ( x & y ) | ( x & z ) | ( y & z ) ) Rounds 40-59 */
#define f3(x,y,z) ( ( x & y ) | ( z & ( x | y ) ) ) /* Rounds 40-59 */
#define f4(x,y,z) ( x ^ y ^ z ) /* Rounds 60-79 */
/* The SHA Mysterious Constants */
#define K1 0x5A827999L /* Rounds 0-19 */
#define K2 0x6ED9EBA1L /* Rounds 20-39 */
#define K3 0x8F1BBCDCL /* Rounds 40-59 */
#define K4 0xCA62C1D6L /* Rounds 60-79 */
/* SHA initial values */
#define h0init 0x67452301L
#define h1init 0xEFCDAB89L
#define h2init 0x98BADCFEL
#define h3init 0x10325476L
#define h4init 0xC3D2E1F0L
/* 32-bit rotate left - kludged with shifts */
#ifdef _MSC_VER
#define ROTL(n,X) _lrotl(X, n)
#else
#define ROTL(n,X) ( ( (X) << (n) ) | ( (X) >> ( 32 - (n) ) ) )
#endif
/* The initial expanding function. The hash function is defined over an
80-word expanded input array W, where the first 16 are copies of the input
data, and the remaining 64 are defined by
W[ i ] = W[ i - 16 ] ^ W[ i - 14 ] ^ W[ i - 8 ] ^ W[ i - 3 ]
This implementation generates these values on the fly in a circular
buffer - thanks to Colin Plumb, colin@nyx10.cs.du.edu for this
optimization.
The updated SHA changes the expanding function by adding a rotate of 1
bit. Thanks to Jim Gillogly, jim@rand.org, and an anonymous contributor
for this information */
#define expand(W,i) ( W[ i & 15 ] = \
ROTL( 1, ( W[ i & 15 ] ^ W[ (i - 14) & 15 ] ^ \
W[ (i - 8) & 15 ] ^ W[ (i - 3) & 15 ] ) ) )
/* The prototype SHA sub-round. The fundamental sub-round is:
a' = e + ROTL( 5, a ) + f( b, c, d ) + k + data;
b' = a;
c' = ROTL( 30, b );
d' = c;
e' = d;
but this is implemented by unrolling the loop 5 times and renaming the
variables ( e, a, b, c, d ) = ( a', b', c', d', e' ) each iteration.
This code is then replicated 20 times for each of the 4 functions, using
the next 20 values from the W[] array each time */
#define subRound(a, b, c, d, e, f, k, data) \
( e += ROTL( 5, a ) + f( b, c, d ) + k + data, b = ROTL( 30, b ) )
/* Initialize the SHA values */
void
sha1_init(struct sha1_ctx *ctx)
{
/* Set the h-vars to their initial values */
ctx->digest[ 0 ] = h0init;
ctx->digest[ 1 ] = h1init;
ctx->digest[ 2 ] = h2init;
ctx->digest[ 3 ] = h3init;
ctx->digest[ 4 ] = h4init;
/* Initialize bit count */
ctx->count_low = ctx->count_high = 0;
/* Initialize buffer */
ctx->index = 0;
}
/* Perform the SHA transformation. Note that this code, like MD5, seems to
break some optimizing compilers due to the complexity of the expressions
and the size of the basic block. It may be necessary to split it into
sections, e.g. based on the four subrounds
Note that this function destroys the data area */
static void
sha1_transform(uint32_t *state, uint32_t *data)
{
uint32_t A, B, C, D, E; /* Local vars */
/* Set up first buffer and local data buffer */
A = state[0];
B = state[1];
C = state[2];
D = state[3];
E = state[4];
/* Heavy mangling, in 4 sub-rounds of 20 interations each. */
subRound( A, B, C, D, E, f1, K1, data[ 0] );
subRound( E, A, B, C, D, f1, K1, data[ 1] );
subRound( D, E, A, B, C, f1, K1, data[ 2] );
subRound( C, D, E, A, B, f1, K1, data[ 3] );
subRound( B, C, D, E, A, f1, K1, data[ 4] );
subRound( A, B, C, D, E, f1, K1, data[ 5] );
subRound( E, A, B, C, D, f1, K1, data[ 6] );
subRound( D, E, A, B, C, f1, K1, data[ 7] );
subRound( C, D, E, A, B, f1, K1, data[ 8] );
subRound( B, C, D, E, A, f1, K1, data[ 9] );
subRound( A, B, C, D, E, f1, K1, data[10] );
subRound( E, A, B, C, D, f1, K1, data[11] );
subRound( D, E, A, B, C, f1, K1, data[12] );
subRound( C, D, E, A, B, f1, K1, data[13] );
subRound( B, C, D, E, A, f1, K1, data[14] );
subRound( A, B, C, D, E, f1, K1, data[15] );
subRound( E, A, B, C, D, f1, K1, expand( data, 16 ) );
subRound( D, E, A, B, C, f1, K1, expand( data, 17 ) );
subRound( C, D, E, A, B, f1, K1, expand( data, 18 ) );
subRound( B, C, D, E, A, f1, K1, expand( data, 19 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 20 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 21 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 22 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 23 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 24 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 25 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 26 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 27 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 28 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 29 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 30 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 31 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 32 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 33 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 34 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 35 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 36 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 37 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 38 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 39 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 40 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 41 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 42 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 43 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 44 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 45 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 46 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 47 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 48 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 49 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 50 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 51 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 52 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 53 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 54 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 55 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 56 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 57 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 58 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 59 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 60 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 61 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 62 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 63 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 64 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 65 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 66 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 67 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 68 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 69 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 70 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 71 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 72 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 73 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 74 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 75 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 76 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 77 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 78 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 79 ) );
/* Build message digest */
state[0] += A;
state[1] += B;
state[2] += C;
state[3] += D;
state[4] += E;
}
static void
sha1_block(struct sha1_ctx *ctx, const uint8_t *block)
{
uint32_t data[SHA1_DATA_LENGTH];
int i;
/* Update block count */
if (!++ctx->count_low)
++ctx->count_high;
/* Endian independent conversion */
for (i = 0; i<SHA1_DATA_LENGTH; i++, block += 4)
data[i] = READ_UINT32(block);
sha1_transform(ctx->digest, data);
}
void
sha1_update(struct sha1_ctx *ctx,
unsigned length, const uint8_t *buffer)
{
if (ctx->index)
{ /* Try to fill partial block */
unsigned left = SHA1_DATA_SIZE - ctx->index;
if (length < left)
{
memcpy(ctx->block + ctx->index, buffer, length);
ctx->index += length;
return; /* Finished */
}
else
{
memcpy(ctx->block + ctx->index, buffer, left);
sha1_block(ctx, ctx->block);
buffer += left;
length -= left;
}
}
while (length >= SHA1_DATA_SIZE)
{
sha1_block(ctx, buffer);
buffer += SHA1_DATA_SIZE;
length -= SHA1_DATA_SIZE;
}
if ((ctx->index = length)) /* This assignment is intended */
/* Buffer leftovers */
memcpy(ctx->block, buffer, length);
}
/* Final wrapup - pad to SHA1_DATA_SIZE-byte boundary with the bit pattern
1 0* (64-bit count of bits processed, MSB-first) */
void
sha1_final(struct sha1_ctx *ctx)
{
uint32_t data[SHA1_DATA_LENGTH];
int i;
int words;
i = ctx->index;
/* Set the first char of padding to 0x80. This is safe since there is
always at least one byte free */
assert(i < SHA1_DATA_SIZE);
ctx->block[i++] = 0x80;
/* Fill rest of word */
for( ; i & 3; i++)
ctx->block[i] = 0;
/* i is now a multiple of the word size 4 */
words = i >> 2;
for (i = 0; i < words; i++)
data[i] = READ_UINT32(ctx->block + 4*i);
if (words > (SHA1_DATA_LENGTH-2))
{ /* No room for length in this block. Process it and
* pad with another one */
for (i = words ; i < SHA1_DATA_LENGTH; i++)
data[i] = 0;
sha1_transform(ctx->digest, data);
for (i = 0; i < (SHA1_DATA_LENGTH-2); i++)
data[i] = 0;
}
else
for (i = words ; i < SHA1_DATA_LENGTH - 2; i++)
data[i] = 0;
/* There are 512 = 2^9 bits in one block */
data[SHA1_DATA_LENGTH-2] = (ctx->count_high << 9) | (ctx->count_low >> 23);
data[SHA1_DATA_LENGTH-1] = (ctx->count_low << 9) | (ctx->index << 3);
sha1_transform(ctx->digest, data);
}
void
sha1_digest(const struct sha1_ctx *ctx,
unsigned length,
uint8_t *digest)
{
unsigned i;
unsigned words;
unsigned leftover;
assert(length <= SHA1_DIGEST_SIZE);
words = length / 4;
leftover = length % 4;
for (i = 0; i < words; i++, digest += 4)
WRITE_UINT32(digest, ctx->digest[i]);
if (leftover)
{
uint32_t word;
unsigned j = leftover;
assert(i < _SHA1_DIGEST_LENGTH);
word = ctx->digest[i];
switch (leftover)
{
default:
abort();
case 3:
digest[--j] = (word >> 8) & 0xff;
/* Fall through */
case 2:
digest[--j] = (word >> 16) & 0xff;
/* Fall through */
case 1:
digest[--j] = (word >> 24) & 0xff;
}
}
}
/* sha1.h
*
* The sha1 hash function.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 Peter Gutmann, Andrew Kuchling, Niels M?ller
*
* The nettle library 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.
*
* The nettle library 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 the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include <mame_sha1.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
unsigned int READ_UINT32(const uint8_t* data)
{
return ((uint32_t)data[0] << 24) |
((uint32_t)data[1] << 16) |
((uint32_t)data[2] << 8) |
((uint32_t)data[3]);
}
void WRITE_UINT32(unsigned char* data, uint32_t val)
{
data[0] = (val >> 24) & 0xFF;
data[1] = (val >> 16) & 0xFF;
data[2] = (val >> 8) & 0xFF;
data[3] = (val >> 0) & 0xFF;
}
/* A block, treated as a sequence of 32-bit words. */
#define SHA1_DATA_LENGTH 16
/* The SHA f()-functions. The f1 and f3 functions can be optimized to
save one boolean operation each - thanks to Rich Schroeppel,
rcs@cs.arizona.edu for discovering this */
/* #define f1(x,y,z) ( ( x & y ) | ( ~x & z ) ) Rounds 0-19 */
#define f1(x,y,z) ( z ^ ( x & ( y ^ z ) ) ) /* Rounds 0-19 */
#define f2(x,y,z) ( x ^ y ^ z ) /* Rounds 20-39 */
/* #define f3(x,y,z) ( ( x & y ) | ( x & z ) | ( y & z ) ) Rounds 40-59 */
#define f3(x,y,z) ( ( x & y ) | ( z & ( x | y ) ) ) /* Rounds 40-59 */
#define f4(x,y,z) ( x ^ y ^ z ) /* Rounds 60-79 */
/* The SHA Mysterious Constants */
#define K1 0x5A827999L /* Rounds 0-19 */
#define K2 0x6ED9EBA1L /* Rounds 20-39 */
#define K3 0x8F1BBCDCL /* Rounds 40-59 */
#define K4 0xCA62C1D6L /* Rounds 60-79 */
/* SHA initial values */
#define h0init 0x67452301L
#define h1init 0xEFCDAB89L
#define h2init 0x98BADCFEL
#define h3init 0x10325476L
#define h4init 0xC3D2E1F0L
/* 32-bit rotate left - kludged with shifts */
#ifdef _MSC_VER
#define ROTL(n,X) _lrotl(X, n)
#else
#define ROTL(n,X) ( ( (X) << (n) ) | ( (X) >> ( 32 - (n) ) ) )
#endif
/* The initial expanding function. The hash function is defined over an
80-word expanded input array W, where the first 16 are copies of the input
data, and the remaining 64 are defined by
W[ i ] = W[ i - 16 ] ^ W[ i - 14 ] ^ W[ i - 8 ] ^ W[ i - 3 ]
This implementation generates these values on the fly in a circular
buffer - thanks to Colin Plumb, colin@nyx10.cs.du.edu for this
optimization.
The updated SHA changes the expanding function by adding a rotate of 1
bit. Thanks to Jim Gillogly, jim@rand.org, and an anonymous contributor
for this information */
#define expand(W,i) ( W[ i & 15 ] = \
ROTL( 1, ( W[ i & 15 ] ^ W[ (i - 14) & 15 ] ^ \
W[ (i - 8) & 15 ] ^ W[ (i - 3) & 15 ] ) ) )
/* The prototype SHA sub-round. The fundamental sub-round is:
a' = e + ROTL( 5, a ) + f( b, c, d ) + k + data;
b' = a;
c' = ROTL( 30, b );
d' = c;
e' = d;
but this is implemented by unrolling the loop 5 times and renaming the
variables ( e, a, b, c, d ) = ( a', b', c', d', e' ) each iteration.
This code is then replicated 20 times for each of the 4 functions, using
the next 20 values from the W[] array each time */
#define subRound(a, b, c, d, e, f, k, data) \
( e += ROTL( 5, a ) + f( b, c, d ) + k + data, b = ROTL( 30, b ) )
/* Initialize the SHA values */
void
sha1_init(struct sha1_ctx *ctx)
{
/* Set the h-vars to their initial values */
ctx->digest[ 0 ] = h0init;
ctx->digest[ 1 ] = h1init;
ctx->digest[ 2 ] = h2init;
ctx->digest[ 3 ] = h3init;
ctx->digest[ 4 ] = h4init;
/* Initialize bit count */
ctx->count_low = ctx->count_high = 0;
/* Initialize buffer */
ctx->index = 0;
}
/* Perform the SHA transformation. Note that this code, like MD5, seems to
break some optimizing compilers due to the complexity of the expressions
and the size of the basic block. It may be necessary to split it into
sections, e.g. based on the four subrounds
Note that this function destroys the data area */
static void
sha1_transform(uint32_t *state, uint32_t *data)
{
uint32_t A, B, C, D, E; /* Local vars */
/* Set up first buffer and local data buffer */
A = state[0];
B = state[1];
C = state[2];
D = state[3];
E = state[4];
/* Heavy mangling, in 4 sub-rounds of 20 interations each. */
subRound( A, B, C, D, E, f1, K1, data[ 0] );
subRound( E, A, B, C, D, f1, K1, data[ 1] );
subRound( D, E, A, B, C, f1, K1, data[ 2] );
subRound( C, D, E, A, B, f1, K1, data[ 3] );
subRound( B, C, D, E, A, f1, K1, data[ 4] );
subRound( A, B, C, D, E, f1, K1, data[ 5] );
subRound( E, A, B, C, D, f1, K1, data[ 6] );
subRound( D, E, A, B, C, f1, K1, data[ 7] );
subRound( C, D, E, A, B, f1, K1, data[ 8] );
subRound( B, C, D, E, A, f1, K1, data[ 9] );
subRound( A, B, C, D, E, f1, K1, data[10] );
subRound( E, A, B, C, D, f1, K1, data[11] );
subRound( D, E, A, B, C, f1, K1, data[12] );
subRound( C, D, E, A, B, f1, K1, data[13] );
subRound( B, C, D, E, A, f1, K1, data[14] );
subRound( A, B, C, D, E, f1, K1, data[15] );
subRound( E, A, B, C, D, f1, K1, expand( data, 16 ) );
subRound( D, E, A, B, C, f1, K1, expand( data, 17 ) );
subRound( C, D, E, A, B, f1, K1, expand( data, 18 ) );
subRound( B, C, D, E, A, f1, K1, expand( data, 19 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 20 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 21 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 22 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 23 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 24 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 25 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 26 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 27 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 28 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 29 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 30 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 31 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 32 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 33 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 34 ) );
subRound( A, B, C, D, E, f2, K2, expand( data, 35 ) );
subRound( E, A, B, C, D, f2, K2, expand( data, 36 ) );
subRound( D, E, A, B, C, f2, K2, expand( data, 37 ) );
subRound( C, D, E, A, B, f2, K2, expand( data, 38 ) );
subRound( B, C, D, E, A, f2, K2, expand( data, 39 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 40 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 41 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 42 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 43 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 44 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 45 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 46 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 47 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 48 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 49 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 50 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 51 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 52 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 53 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 54 ) );
subRound( A, B, C, D, E, f3, K3, expand( data, 55 ) );
subRound( E, A, B, C, D, f3, K3, expand( data, 56 ) );
subRound( D, E, A, B, C, f3, K3, expand( data, 57 ) );
subRound( C, D, E, A, B, f3, K3, expand( data, 58 ) );
subRound( B, C, D, E, A, f3, K3, expand( data, 59 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 60 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 61 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 62 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 63 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 64 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 65 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 66 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 67 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 68 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 69 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 70 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 71 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 72 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 73 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 74 ) );
subRound( A, B, C, D, E, f4, K4, expand( data, 75 ) );
subRound( E, A, B, C, D, f4, K4, expand( data, 76 ) );
subRound( D, E, A, B, C, f4, K4, expand( data, 77 ) );
subRound( C, D, E, A, B, f4, K4, expand( data, 78 ) );
subRound( B, C, D, E, A, f4, K4, expand( data, 79 ) );
/* Build message digest */
state[0] += A;
state[1] += B;
state[2] += C;
state[3] += D;
state[4] += E;
}
static void
sha1_block(struct sha1_ctx *ctx, const uint8_t *block)
{
uint32_t data[SHA1_DATA_LENGTH];
int i;
/* Update block count */
if (!++ctx->count_low)
++ctx->count_high;
/* Endian independent conversion */
for (i = 0; i<SHA1_DATA_LENGTH; i++, block += 4)
data[i] = READ_UINT32(block);
sha1_transform(ctx->digest, data);
}
void
sha1_update(struct sha1_ctx *ctx,
unsigned length, const uint8_t *buffer)
{
if (ctx->index)
{ /* Try to fill partial block */
unsigned left = SHA1_DATA_SIZE - ctx->index;
if (length < left)
{
memcpy(ctx->block + ctx->index, buffer, length);
ctx->index += length;
return; /* Finished */
}
else
{
memcpy(ctx->block + ctx->index, buffer, left);
sha1_block(ctx, ctx->block);
buffer += left;
length -= left;
}
}
while (length >= SHA1_DATA_SIZE)
{
sha1_block(ctx, buffer);
buffer += SHA1_DATA_SIZE;
length -= SHA1_DATA_SIZE;
}
if ((ctx->index = length)) /* This assignment is intended */
/* Buffer leftovers */
memcpy(ctx->block, buffer, length);
}
/* Final wrapup - pad to SHA1_DATA_SIZE-byte boundary with the bit pattern
1 0* (64-bit count of bits processed, MSB-first) */
void
sha1_final(struct sha1_ctx *ctx)
{
uint32_t data[SHA1_DATA_LENGTH];
int i;
int words;
i = ctx->index;
/* Set the first char of padding to 0x80. This is safe since there is
always at least one byte free */
assert(i < SHA1_DATA_SIZE);
ctx->block[i++] = 0x80;
/* Fill rest of word */
for( ; i & 3; i++)
ctx->block[i] = 0;
/* i is now a multiple of the word size 4 */
words = i >> 2;
for (i = 0; i < words; i++)
data[i] = READ_UINT32(ctx->block + 4*i);
if (words > (SHA1_DATA_LENGTH-2))
{ /* No room for length in this block. Process it and
* pad with another one */
for (i = words ; i < SHA1_DATA_LENGTH; i++)
data[i] = 0;
sha1_transform(ctx->digest, data);
for (i = 0; i < (SHA1_DATA_LENGTH-2); i++)
data[i] = 0;
}
else
for (i = words ; i < SHA1_DATA_LENGTH - 2; i++)
data[i] = 0;
/* There are 512 = 2^9 bits in one block */
data[SHA1_DATA_LENGTH-2] = (ctx->count_high << 9) | (ctx->count_low >> 23);
data[SHA1_DATA_LENGTH-1] = (ctx->count_low << 9) | (ctx->index << 3);
sha1_transform(ctx->digest, data);
}
void
sha1_digest(const struct sha1_ctx *ctx,
unsigned length,
uint8_t *digest)
{
unsigned i;
unsigned words;
unsigned leftover;
assert(length <= SHA1_DIGEST_SIZE);
words = length / 4;
leftover = length % 4;
for (i = 0; i < words; i++, digest += 4)
WRITE_UINT32(digest, ctx->digest[i]);
if (leftover)
{
uint32_t word;
unsigned j = leftover;
assert(i < _SHA1_DIGEST_LENGTH);
word = ctx->digest[i];
switch (leftover)
{
default:
abort();
case 3:
digest[--j] = (word >> 8) & 0xff;
/* Fall through */
case 2:
digest[--j] = (word >> 16) & 0xff;
/* Fall through */
case 1:
digest[--j] = (word >> 24) & 0xff;
}
}
}

122
src/libretro-common/include/utils/sha1.h → src/lib/mame-chd/mame_sha1.h
View File

@ -1,61 +1,61 @@
/* sha1.h
*
* The sha1 hash function.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 Niels Möller
*
* The nettle library 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.
*
* The nettle library 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 the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#ifndef NETTLE_SHA1_H_INCLUDED
#define NETTLE_SHA1_H_INCLUDED
#include <stdint.h>
#define SHA1_DIGEST_SIZE 20
#define SHA1_DATA_SIZE 64
/* Digest is kept internally as 4 32-bit words. */
#define _SHA1_DIGEST_LENGTH 5
struct sha1_ctx
{
uint32_t digest[_SHA1_DIGEST_LENGTH]; /* Message digest */
uint32_t count_low, count_high; /* 64-bit block count */
uint8_t block[SHA1_DATA_SIZE]; /* SHA1 data buffer */
unsigned int index; /* index into buffer */
};
void
sha1_init(struct sha1_ctx *ctx);
void
sha1_update(struct sha1_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha1_final(struct sha1_ctx *ctx);
void
sha1_digest(const struct sha1_ctx *ctx,
unsigned length,
uint8_t *digest);
#endif /* NETTLE_SHA1_H_INCLUDED */
/* sha1.h
*
* The sha1 hash function.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 Niels M<EFBFBD>ller
*
* The nettle library 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.
*
* The nettle library 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 the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#ifndef NETTLE_SHA1_H_INCLUDED
#define NETTLE_SHA1_H_INCLUDED
#include <stdint.h>
#define SHA1_DIGEST_SIZE 20
#define SHA1_DATA_SIZE 64
/* Digest is kept internally as 4 32-bit words. */
#define _SHA1_DIGEST_LENGTH 5
struct sha1_ctx
{
uint32_t digest[_SHA1_DIGEST_LENGTH]; /* Message digest */
uint32_t count_low, count_high; /* 64-bit block count */
uint8_t block[SHA1_DATA_SIZE]; /* SHA1 data buffer */
unsigned int index; /* index into buffer */
};
void
sha1_init(struct sha1_ctx *ctx);
void
sha1_update(struct sha1_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha1_final(struct sha1_ctx *ctx);
void
sha1_digest(const struct sha1_ctx *ctx,
unsigned length,
uint8_t *digest);
#endif /* NETTLE_SHA1_H_INCLUDED */

326
src/libretro-common/formats/libchdr/libchdr_flac_codec.c
View File

@ -1,163 +1,163 @@
/***************************************************************************
libchdr_flac_codec.c
MAME Compressed Hunks of Data file format
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libchdr/chd.h>
#include <libchdr/minmax.h>
#include <libchdr/cdrom.h>
#include <libchdr/flac.h>
#include <libchdr/huffman.h>
#include <zlib.h>
#include <retro_inline.h>
#include <streams/file_stream.h>
#define TRUE 1
#define FALSE 0
/***************************************************************************
* CD FLAC DECOMPRESSOR
***************************************************************************
*/
/*------------------------------------------------------
* cdfl_codec_blocksize - return the optimal block size
*------------------------------------------------------
*/
static uint32_t cdfl_codec_blocksize(uint32_t bytes)
{
/* determine FLAC block size, which must be 16-65535
* clamp to 2k since that's supposed to be the sweet spot */
uint32_t hunkbytes = bytes / 4;
while (hunkbytes > 2048)
hunkbytes /= 2;
return hunkbytes;
}
chd_error cdfl_codec_init(void *codec, uint32_t hunkbytes)
{
#ifdef WANT_SUBCODE
chd_error ret;
#endif
uint16_t native_endian = 0;
cdfl_codec_data *cdfl = (cdfl_codec_data*)codec;
/* make sure the CHD's hunk size is an even multiple of the frame size */
if (hunkbytes % CD_FRAME_SIZE != 0)
return CHDERR_CODEC_ERROR;
cdfl->buffer = (uint8_t*)malloc(sizeof(uint8_t) * hunkbytes);
if (cdfl->buffer == NULL)
return CHDERR_OUT_OF_MEMORY;
/* determine whether we want native or swapped samples */
*(uint8_t *)(&native_endian) = 1;
cdfl->swap_endian = (native_endian & 1);
#ifdef WANT_SUBCODE
/* init zlib inflater */
ret = zlib_codec_init(&cdfl->subcode_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#endif
/* flac decoder init */
flac_decoder_init(&cdfl->decoder);
if (cdfl->decoder.decoder == NULL)
return CHDERR_OUT_OF_MEMORY;
return CHDERR_NONE;
}
void cdfl_codec_free(void *codec)
{
cdfl_codec_data *cdfl = (cdfl_codec_data*)codec;
flac_decoder_free(&cdfl->decoder);
#ifdef WANT_SUBCODE
zlib_codec_free(&cdfl->subcode_decompressor);
#endif
if (cdfl->buffer)
free(cdfl->buffer);
}
chd_error cdfl_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
uint32_t framenum;
uint8_t *buffer;
#ifdef WANT_SUBCODE
uint32_t offset;
chd_error ret;
#endif
cdfl_codec_data *cdfl = (cdfl_codec_data*)codec;
/* reset and decode */
uint32_t frames = destlen / CD_FRAME_SIZE;
if (!flac_decoder_reset(&cdfl->decoder, 44100, 2, cdfl_codec_blocksize(frames * CD_MAX_SECTOR_DATA), src, complen))
return CHDERR_DECOMPRESSION_ERROR;
buffer = &cdfl->buffer[0];
if (!flac_decoder_decode_interleaved(&cdfl->decoder, (int16_t *)(buffer), frames * CD_MAX_SECTOR_DATA/4, cdfl->swap_endian))
return CHDERR_DECOMPRESSION_ERROR;
#ifdef WANT_SUBCODE
/* inflate the subcode data */
offset = flac_decoder_finish(&cdfl->decoder);
ret = zlib_codec_decompress(&cdfl->subcode_decompressor, src + offset, complen - offset, &cdfl->buffer[frames * CD_MAX_SECTOR_DATA], frames * CD_MAX_SUBCODE_DATA);
if (ret != CHDERR_NONE)
return ret;
#else
flac_decoder_finish(&cdfl->decoder);
#endif
/* reassemble the data */
for (framenum = 0; framenum < frames; framenum++)
{
memcpy(&dest[framenum * CD_FRAME_SIZE], &cdfl->buffer[framenum * CD_MAX_SECTOR_DATA], CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
memcpy(&dest[framenum * CD_FRAME_SIZE + CD_MAX_SECTOR_DATA], &cdfl->buffer[frames * CD_MAX_SECTOR_DATA + framenum * CD_MAX_SUBCODE_DATA], CD_MAX_SUBCODE_DATA);
#endif
}
return CHDERR_NONE;
}
/***************************************************************************
libchdr_flac_codec.c
MAME Compressed Hunks of Data file format
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libchdr/chd.h>
#include <libchdr/minmax.h>
#include <libchdr/cdrom.h>
#include <libchdr/flac.h>
#include <libchdr/huffman.h>
#include <zlib.h>
#include <retro_inline.h>
#include <streams/file_stream.h>
#define TRUE 1
#define FALSE 0
/***************************************************************************
* CD FLAC DECOMPRESSOR
***************************************************************************
*/
/*------------------------------------------------------
* cdfl_codec_blocksize - return the optimal block size
*------------------------------------------------------
*/
static uint32_t cdfl_codec_blocksize(uint32_t bytes)
{
/* determine FLAC block size, which must be 16-65535
* clamp to 2k since that's supposed to be the sweet spot */
uint32_t hunkbytes = bytes / 4;
while (hunkbytes > 2048)
hunkbytes /= 2;
return hunkbytes;
}
chd_error cdfl_codec_init(void *codec, uint32_t hunkbytes)
{
#ifdef WANT_SUBCODE
chd_error ret;
#endif
uint16_t native_endian = 0;
cdfl_codec_data *cdfl = (cdfl_codec_data*)codec;
/* make sure the CHD's hunk size is an even multiple of the frame size */
if (hunkbytes % CD_FRAME_SIZE != 0)
return CHDERR_CODEC_ERROR;
cdfl->buffer = (uint8_t*)malloc(sizeof(uint8_t) * hunkbytes);
if (cdfl->buffer == NULL)
return CHDERR_OUT_OF_MEMORY;
/* determine whether we want native or swapped samples */
*(uint8_t *)(&native_endian) = 1;
cdfl->swap_endian = (native_endian & 1);
#ifdef WANT_SUBCODE
/* init zlib inflater */
ret = zlib_codec_init(&cdfl->subcode_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#endif
/* flac decoder init */
flac_decoder_init(&cdfl->decoder);
if (cdfl->decoder.decoder == NULL)
return CHDERR_OUT_OF_MEMORY;
return CHDERR_NONE;
}
void cdfl_codec_free(void *codec)
{
cdfl_codec_data *cdfl = (cdfl_codec_data*)codec;
flac_decoder_free(&cdfl->decoder);
#ifdef WANT_SUBCODE
zlib_codec_free(&cdfl->subcode_decompressor);
#endif
if (cdfl->buffer)
free(cdfl->buffer);
}
chd_error cdfl_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
uint32_t framenum;
uint8_t *buffer;
#ifdef WANT_SUBCODE
uint32_t offset;
chd_error ret;
#endif
cdfl_codec_data *cdfl = (cdfl_codec_data*)codec;
/* reset and decode */
uint32_t frames = destlen / CD_FRAME_SIZE;
if (!flac_decoder_reset(&cdfl->decoder, 44100, 2, cdfl_codec_blocksize(frames * CD_MAX_SECTOR_DATA), src, complen))
return CHDERR_DECOMPRESSION_ERROR;
buffer = &cdfl->buffer[0];
if (!flac_decoder_decode_interleaved(&cdfl->decoder, (int16_t *)(buffer), frames * CD_MAX_SECTOR_DATA/4, cdfl->swap_endian))
return CHDERR_DECOMPRESSION_ERROR;
#ifdef WANT_SUBCODE
/* inflate the subcode data */
offset = flac_decoder_finish(&cdfl->decoder);
ret = zlib_codec_decompress(&cdfl->subcode_decompressor, src + offset, complen - offset, &cdfl->buffer[frames * CD_MAX_SECTOR_DATA], frames * CD_MAX_SUBCODE_DATA);
if (ret != CHDERR_NONE)
return ret;
#else
flac_decoder_finish(&cdfl->decoder);
#endif
/* reassemble the data */
for (framenum = 0; framenum < frames; framenum++)
{
memcpy(&dest[framenum * CD_FRAME_SIZE], &cdfl->buffer[framenum * CD_MAX_SECTOR_DATA], CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
memcpy(&dest[framenum * CD_FRAME_SIZE + CD_MAX_SECTOR_DATA], &cdfl->buffer[frames * CD_MAX_SECTOR_DATA + framenum * CD_MAX_SUBCODE_DATA], CD_MAX_SUBCODE_DATA);
#endif
}
return CHDERR_NONE;
}

710
src/libretro-common/formats/libchdr/libchdr_lzma.c
View File

@ -1,355 +1,355 @@
/***************************************************************************
libchdr_lzma_codec.c
MAME Compressed Hunks of Data file format
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libchdr/chd.h>
#include <libchdr/minmax.h>
#include <libchdr/cdrom.h>
#include <libchdr/lzma.h>
#include <libchdr/huffman.h>
#include <zlib.h>
#include <retro_inline.h>
#include <streams/file_stream.h>
#define TRUE 1
#define FALSE 0
/***************************************************************************
* LZMA ALLOCATOR HELPER
***************************************************************************
*/
/*-------------------------------------------------
* lzma_fast_alloc - fast malloc for lzma, which
* allocates and frees memory frequently
*-------------------------------------------------
*/
static void *lzma_fast_alloc(void *p, size_t size)
{
int scan;
uint32_t *addr = NULL;
lzma_allocator *codec = (lzma_allocator *)(p);
/* compute the size, rounding to the nearest 1k */
size = (size + 0x3ff) & ~0x3ff;
/* reuse a hunk if we can */
for (scan = 0; scan < MAX_LZMA_ALLOCS; scan++)
{
uint32_t *ptr = codec->allocptr[scan];
if (ptr != NULL && size == *ptr)
{
/* set the low bit of the size so we don't match next time */
*ptr |= 1;
return ptr + 1;
}
}
/* alloc a new one and put it into the list */
addr = (uint32_t *)malloc(sizeof(uint32_t) * (size + sizeof(uint32_t)));
if (!addr)
return NULL;
for (scan = 0; scan < MAX_LZMA_ALLOCS; scan++)
{
if (codec->allocptr[scan] == NULL)
{
codec->allocptr[scan] = addr;
break;
}
}
/* set the low bit of the size so we don't match next time */
*addr = size | 1;
return addr + 1;
}
/*-------------------------------------------------
* lzma_fast_free - fast free for lzma, which
* allocates and frees memory frequently
*-------------------------------------------------
*/
static void lzma_fast_free(void *p, void *address)
{
int scan;
uint32_t *ptr;
lzma_allocator *codec;
if (address == NULL)
return;
codec = (lzma_allocator *)(p);
/* find the hunk */
ptr = (uint32_t *)(address) - 1;
for (scan = 0; scan < MAX_LZMA_ALLOCS; scan++)
{
if (ptr == codec->allocptr[scan])
{
/* clear the low bit of the size to allow matches */
*ptr &= ~1;
return;
}
}
}
/*-------------------------------------------------
* lzma_allocator_init
*-------------------------------------------------
*/
void lzma_allocator_init(void* p)
{
lzma_allocator *codec = (lzma_allocator *)(p);
/* reset pointer list */
memset(codec->allocptr, 0, sizeof(codec->allocptr));
codec->Alloc = lzma_fast_alloc;
codec->Free = lzma_fast_free;
}
/*-------------------------------------------------
* lzma_allocator_free
*-------------------------------------------------
*/
void lzma_allocator_free(void* p )
{
lzma_allocator *codec = (lzma_allocator *)(p);
/* free our memory */
int i;
for (i = 0 ; i < MAX_LZMA_ALLOCS ; i++)
{
if (codec->allocptr[i] != NULL)
free(codec->allocptr[i]);
}
}
/***************************************************************************
* LZMA DECOMPRESSOR
***************************************************************************
*/
/*-------------------------------------------------
* lzma_codec_init - constructor
*-------------------------------------------------
*/
chd_error lzma_codec_init(void* codec, uint32_t hunkbytes)
{
CLzmaEncProps encoder_props;
CLzmaEncHandle enc;
uint8_t decoder_props[LZMA_PROPS_SIZE];
lzma_allocator* alloc;
size_t props_size;
lzma_codec_data* lzma_codec = (lzma_codec_data*) codec;
/* construct the decoder */
LzmaDec_Construct(&lzma_codec->decoder);
/* FIXME: this code is written in a way that makes it impossible to safely upgrade the LZMA SDK
* This code assumes that the current version of the encoder imposes the same requirements on the
* decoder as the encoder used to produce the file. This is not necessarily true. The format
* needs to be changed so the encoder properties are written to the file.
* configure the properties like the compressor did */
LzmaEncProps_Init(&encoder_props);
encoder_props.level = 9;
encoder_props.reduceSize = hunkbytes;
LzmaEncProps_Normalize(&encoder_props);
/* convert to decoder properties */
alloc = &lzma_codec->allocator;
lzma_allocator_init(alloc);
enc = LzmaEnc_Create((ISzAlloc*)alloc);
if (!enc)
return CHDERR_DECOMPRESSION_ERROR;
if (LzmaEnc_SetProps(enc, &encoder_props) != SZ_OK)
{
LzmaEnc_Destroy(enc, (ISzAlloc*)&alloc, (ISzAlloc*)&alloc);
return CHDERR_DECOMPRESSION_ERROR;
}
props_size = sizeof(decoder_props);
if (LzmaEnc_WriteProperties(enc, decoder_props, &props_size) != SZ_OK)
{
LzmaEnc_Destroy(enc, (ISzAlloc*)alloc, (ISzAlloc*)alloc);
return CHDERR_DECOMPRESSION_ERROR;
}
LzmaEnc_Destroy(enc, (ISzAlloc*)alloc, (ISzAlloc*)alloc);
/* do memory allocations */
if (LzmaDec_Allocate(&lzma_codec->decoder, decoder_props, LZMA_PROPS_SIZE, (ISzAlloc*)alloc) != SZ_OK)
return CHDERR_DECOMPRESSION_ERROR;
/* Okay */
return CHDERR_NONE;
}
/*-------------------------------------------------
* lzma_codec_free
*-------------------------------------------------
*/
void lzma_codec_free(void* codec)
{
lzma_codec_data* lzma_codec = (lzma_codec_data*) codec;
lzma_allocator* alloc = &lzma_codec->allocator;
/* free memory */
lzma_allocator_free(alloc);
LzmaDec_Free(&lzma_codec->decoder, (ISzAlloc*)&lzma_codec->allocator);
}
/*-------------------------------------------------
* decompress - decompress data using the LZMA
* codec
*-------------------------------------------------
*/
chd_error lzma_codec_decompress(void* codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
ELzmaStatus status;
SRes res;
size_t consumedlen, decodedlen;
/* initialize */
lzma_codec_data* lzma_codec = (lzma_codec_data*) codec;
LzmaDec_Init(&lzma_codec->decoder);
/* decode */
consumedlen = complen;
decodedlen = destlen;
res = LzmaDec_DecodeToBuf(&lzma_codec->decoder, dest, &decodedlen, src, &consumedlen, LZMA_FINISH_END, &status);
if ((res != SZ_OK && res != LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK) || consumedlen != complen || decodedlen != destlen)
return CHDERR_DECOMPRESSION_ERROR;
return CHDERR_NONE;
}
/* cdlz */
chd_error cdlz_codec_init(void* codec, uint32_t hunkbytes)
{
chd_error ret;
cdlz_codec_data* cdlz = (cdlz_codec_data*) codec;
/* allocate buffer */
cdlz->buffer = (uint8_t*)malloc(sizeof(uint8_t) * hunkbytes);
if (cdlz->buffer == NULL)
return CHDERR_OUT_OF_MEMORY;
ret = lzma_codec_init(&cdlz->base_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#ifdef WANT_SUBCODE
ret = zlib_codec_init(&cdlz->subcode_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#endif
return CHDERR_NONE;
}
void cdlz_codec_free(void* codec)
{
cdlz_codec_data* cdlz = (cdlz_codec_data*) codec;
lzma_codec_free(&cdlz->base_decompressor);
#ifdef WANT_SUBCODE
zlib_codec_free(&cdlz->subcode_decompressor);
#endif
if (cdlz->buffer)
free(cdlz->buffer);
}
chd_error cdlz_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
#ifdef WANT_RAW_DATA_SECTOR
uint8_t *sector;
#endif
uint32_t framenum;
cdlz_codec_data* cdlz = (cdlz_codec_data*)codec;
/* determine header bytes */
uint32_t frames = destlen / CD_FRAME_SIZE;
uint32_t complen_bytes = (destlen < 65536) ? 2 : 3;
uint32_t ecc_bytes = (frames + 7) / 8;
uint32_t header_bytes = ecc_bytes + complen_bytes;
/* extract compressed length of base */
uint32_t complen_base = (src[ecc_bytes + 0] << 8) | src[ecc_bytes + 1];
if (complen_bytes > 2)
complen_base = (complen_base << 8) | src[ecc_bytes + 2];
/* reset and decode */
lzma_codec_decompress(&cdlz->base_decompressor, &src[header_bytes], complen_base, &cdlz->buffer[0], frames * CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
if (header_bytes + complen_base >= complen)
return CHDERR_DECOMPRESSION_ERROR;
zlib_codec_decompress(&cdlz->subcode_decompressor, &src[header_bytes + complen_base], complen - complen_base - header_bytes, &cdlz->buffer[frames * CD_MAX_SECTOR_DATA], frames * CD_MAX_SUBCODE_DATA);
#endif
/* reassemble the data */
for (framenum = 0; framenum < frames; framenum++)
{
memcpy(&dest[framenum * CD_FRAME_SIZE], &cdlz->buffer[framenum * CD_MAX_SECTOR_DATA], CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
memcpy(&dest[framenum * CD_FRAME_SIZE + CD_MAX_SECTOR_DATA], &cdlz->buffer[frames * CD_MAX_SECTOR_DATA + framenum * CD_MAX_SUBCODE_DATA], CD_MAX_SUBCODE_DATA);
#endif
#ifdef WANT_RAW_DATA_SECTOR
/* reconstitute the ECC data and sync header */
sector = (uint8_t *)&dest[framenum * CD_FRAME_SIZE];
if ((src[framenum / 8] & (1 << (framenum % 8))) != 0)
{
memcpy(sector, s_cd_sync_header, sizeof(s_cd_sync_header));
ecc_generate(sector);
}
#endif
}
return CHDERR_NONE;
}
/***************************************************************************
libchdr_lzma_codec.c
MAME Compressed Hunks of Data file format
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libchdr/chd.h>
#include <libchdr/minmax.h>
#include <libchdr/cdrom.h>
#include <libchdr/lzma.h>
#include <libchdr/huffman.h>
#include <zlib.h>
#include <retro_inline.h>
#include <streams/file_stream.h>
#define TRUE 1
#define FALSE 0
/***************************************************************************
* LZMA ALLOCATOR HELPER
***************************************************************************
*/
/*-------------------------------------------------
* lzma_fast_alloc - fast malloc for lzma, which
* allocates and frees memory frequently
*-------------------------------------------------
*/
static void *lzma_fast_alloc(void *p, size_t size)
{
int scan;
uint32_t *addr = NULL;
lzma_allocator *codec = (lzma_allocator *)(p);
/* compute the size, rounding to the nearest 1k */
size = (size + 0x3ff) & ~0x3ff;
/* reuse a hunk if we can */
for (scan = 0; scan < MAX_LZMA_ALLOCS; scan++)
{
uint32_t *ptr = codec->allocptr[scan];
if (ptr != NULL && size == *ptr)
{
/* set the low bit of the size so we don't match next time */
*ptr |= 1;
return ptr + 1;
}
}
/* alloc a new one and put it into the list */
addr = (uint32_t *)malloc(sizeof(uint32_t) * (size + sizeof(uint32_t)));
if (!addr)
return NULL;
for (scan = 0; scan < MAX_LZMA_ALLOCS; scan++)
{
if (codec->allocptr[scan] == NULL)
{
codec->allocptr[scan] = addr;
break;
}
}
/* set the low bit of the size so we don't match next time */
*addr = size | 1;
return addr + 1;
}
/*-------------------------------------------------
* lzma_fast_free - fast free for lzma, which
* allocates and frees memory frequently
*-------------------------------------------------
*/
static void lzma_fast_free(void *p, void *address)
{
int scan;
uint32_t *ptr;
lzma_allocator *codec;
if (address == NULL)
return;
codec = (lzma_allocator *)(p);
/* find the hunk */
ptr = (uint32_t *)(address) - 1;
for (scan = 0; scan < MAX_LZMA_ALLOCS; scan++)
{
if (ptr == codec->allocptr[scan])
{
/* clear the low bit of the size to allow matches */
*ptr &= ~1;
return;
}
}
}
/*-------------------------------------------------
* lzma_allocator_init
*-------------------------------------------------
*/
void lzma_allocator_init(void* p)
{
lzma_allocator *codec = (lzma_allocator *)(p);
/* reset pointer list */
memset(codec->allocptr, 0, sizeof(codec->allocptr));
codec->Alloc = lzma_fast_alloc;
codec->Free = lzma_fast_free;
}
/*-------------------------------------------------
* lzma_allocator_free
*-------------------------------------------------
*/
void lzma_allocator_free(void* p )
{
lzma_allocator *codec = (lzma_allocator *)(p);
/* free our memory */
int i;
for (i = 0 ; i < MAX_LZMA_ALLOCS ; i++)
{
if (codec->allocptr[i] != NULL)
free(codec->allocptr[i]);
}
}
/***************************************************************************
* LZMA DECOMPRESSOR
***************************************************************************
*/
/*-------------------------------------------------
* lzma_codec_init - constructor
*-------------------------------------------------
*/
chd_error lzma_codec_init(void* codec, uint32_t hunkbytes)
{
CLzmaEncProps encoder_props;
CLzmaEncHandle enc;
uint8_t decoder_props[LZMA_PROPS_SIZE];
lzma_allocator* alloc;
size_t props_size;
lzma_codec_data* lzma_codec = (lzma_codec_data*) codec;
/* construct the decoder */
LzmaDec_Construct(&lzma_codec->decoder);
/* FIXME: this code is written in a way that makes it impossible to safely upgrade the LZMA SDK
* This code assumes that the current version of the encoder imposes the same requirements on the
* decoder as the encoder used to produce the file. This is not necessarily true. The format
* needs to be changed so the encoder properties are written to the file.
* configure the properties like the compressor did */
LzmaEncProps_Init(&encoder_props);
encoder_props.level = 9;
encoder_props.reduceSize = hunkbytes;
LzmaEncProps_Normalize(&encoder_props);
/* convert to decoder properties */
alloc = &lzma_codec->allocator;
lzma_allocator_init(alloc);
enc = LzmaEnc_Create((ISzAlloc*)alloc);
if (!enc)
return CHDERR_DECOMPRESSION_ERROR;
if (LzmaEnc_SetProps(enc, &encoder_props) != SZ_OK)
{
LzmaEnc_Destroy(enc, (ISzAlloc*)&alloc, (ISzAlloc*)&alloc);
return CHDERR_DECOMPRESSION_ERROR;
}
props_size = sizeof(decoder_props);
if (LzmaEnc_WriteProperties(enc, decoder_props, &props_size) != SZ_OK)
{
LzmaEnc_Destroy(enc, (ISzAlloc*)alloc, (ISzAlloc*)alloc);
return CHDERR_DECOMPRESSION_ERROR;
}
LzmaEnc_Destroy(enc, (ISzAlloc*)alloc, (ISzAlloc*)alloc);
/* do memory allocations */
if (LzmaDec_Allocate(&lzma_codec->decoder, decoder_props, LZMA_PROPS_SIZE, (ISzAlloc*)alloc) != SZ_OK)
return CHDERR_DECOMPRESSION_ERROR;
/* Okay */
return CHDERR_NONE;
}
/*-------------------------------------------------
* lzma_codec_free
*-------------------------------------------------
*/
void lzma_codec_free(void* codec)
{
lzma_codec_data* lzma_codec = (lzma_codec_data*) codec;
lzma_allocator* alloc = &lzma_codec->allocator;
/* free memory */
lzma_allocator_free(alloc);
LzmaDec_Free(&lzma_codec->decoder, (ISzAlloc*)&lzma_codec->allocator);
}
/*-------------------------------------------------
* decompress - decompress data using the LZMA
* codec
*-------------------------------------------------
*/
chd_error lzma_codec_decompress(void* codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
ELzmaStatus status;
SRes res;
size_t consumedlen, decodedlen;
/* initialize */
lzma_codec_data* lzma_codec = (lzma_codec_data*) codec;
LzmaDec_Init(&lzma_codec->decoder);
/* decode */
consumedlen = complen;
decodedlen = destlen;
res = LzmaDec_DecodeToBuf(&lzma_codec->decoder, dest, &decodedlen, src, &consumedlen, LZMA_FINISH_END, &status);
if ((res != SZ_OK && res != LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK) || consumedlen != complen || decodedlen != destlen)
return CHDERR_DECOMPRESSION_ERROR;
return CHDERR_NONE;
}
/* cdlz */
chd_error cdlz_codec_init(void* codec, uint32_t hunkbytes)
{
chd_error ret;
cdlz_codec_data* cdlz = (cdlz_codec_data*) codec;
/* allocate buffer */
cdlz->buffer = (uint8_t*)malloc(sizeof(uint8_t) * hunkbytes);
if (cdlz->buffer == NULL)
return CHDERR_OUT_OF_MEMORY;
ret = lzma_codec_init(&cdlz->base_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#ifdef WANT_SUBCODE
ret = zlib_codec_init(&cdlz->subcode_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#endif
return CHDERR_NONE;
}
void cdlz_codec_free(void* codec)
{
cdlz_codec_data* cdlz = (cdlz_codec_data*) codec;
lzma_codec_free(&cdlz->base_decompressor);
#ifdef WANT_SUBCODE
zlib_codec_free(&cdlz->subcode_decompressor);
#endif
if (cdlz->buffer)
free(cdlz->buffer);
}
chd_error cdlz_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
#ifdef WANT_RAW_DATA_SECTOR
uint8_t *sector;
#endif
uint32_t framenum;
cdlz_codec_data* cdlz = (cdlz_codec_data*)codec;
/* determine header bytes */
uint32_t frames = destlen / CD_FRAME_SIZE;
uint32_t complen_bytes = (destlen < 65536) ? 2 : 3;
uint32_t ecc_bytes = (frames + 7) / 8;
uint32_t header_bytes = ecc_bytes + complen_bytes;
/* extract compressed length of base */
uint32_t complen_base = (src[ecc_bytes + 0] << 8) | src[ecc_bytes + 1];
if (complen_bytes > 2)
complen_base = (complen_base << 8) | src[ecc_bytes + 2];
/* reset and decode */
lzma_codec_decompress(&cdlz->base_decompressor, &src[header_bytes], complen_base, &cdlz->buffer[0], frames * CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
if (header_bytes + complen_base >= complen)
return CHDERR_DECOMPRESSION_ERROR;
zlib_codec_decompress(&cdlz->subcode_decompressor, &src[header_bytes + complen_base], complen - complen_base - header_bytes, &cdlz->buffer[frames * CD_MAX_SECTOR_DATA], frames * CD_MAX_SUBCODE_DATA);
#endif
/* reassemble the data */
for (framenum = 0; framenum < frames; framenum++)
{
memcpy(&dest[framenum * CD_FRAME_SIZE], &cdlz->buffer[framenum * CD_MAX_SECTOR_DATA], CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
memcpy(&dest[framenum * CD_FRAME_SIZE + CD_MAX_SECTOR_DATA], &cdlz->buffer[frames * CD_MAX_SECTOR_DATA + framenum * CD_MAX_SUBCODE_DATA], CD_MAX_SUBCODE_DATA);
#endif
#ifdef WANT_RAW_DATA_SECTOR
/* reconstitute the ECC data and sync header */
sector = (uint8_t *)&dest[framenum * CD_FRAME_SIZE];
if ((src[framenum / 8] & (1 << (framenum % 8))) != 0)
{
memcpy(sector, s_cd_sync_header, sizeof(s_cd_sync_header));
ecc_generate(sector);
}
#endif
}
return CHDERR_NONE;
}

596
src/libretro-common/formats/libchdr/libchdr_zlib.c
View File

@ -1,298 +1,298 @@
/***************************************************************************
libchdr_zlib.c
MAME Compressed Hunks of Data file format
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libchdr/chd.h>
#include <libchdr/minmax.h>
#include <libchdr/cdrom.h>
#include <libchdr/huffman.h>
#include <libchdr/libchdr_zlib.h>
#include <zlib.h>
#include <retro_inline.h>
#include <streams/file_stream.h>
#define TRUE 1
#define FALSE 0
/* cdzl */
chd_error cdzl_codec_init(void *codec, uint32_t hunkbytes)
{
chd_error ret;
cdzl_codec_data* cdzl = (cdzl_codec_data*)codec;
/* make sure the CHD's hunk size is an even multiple of the frame size */
if (hunkbytes % CD_FRAME_SIZE != 0)
return CHDERR_CODEC_ERROR;
cdzl->buffer = (uint8_t*)malloc(sizeof(uint8_t) * hunkbytes);
if (cdzl->buffer == NULL)
return CHDERR_OUT_OF_MEMORY;
ret = zlib_codec_init(&cdzl->base_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#ifdef WANT_SUBCODE
ret = zlib_codec_init(&cdzl->subcode_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#endif
return CHDERR_NONE;
}
void cdzl_codec_free(void *codec)
{
cdzl_codec_data* cdzl = (cdzl_codec_data*)codec;
zlib_codec_free(&cdzl->base_decompressor);
#ifdef WANT_SUBCODE
zlib_codec_free(&cdzl->subcode_decompressor);
#endif
if (cdzl->buffer)
free(cdzl->buffer);
}
chd_error cdzl_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
#ifdef WANT_RAW_DATA_SECTOR
uint8_t *sector;
#endif
uint32_t framenum;
cdzl_codec_data* cdzl = (cdzl_codec_data*)codec;
/* determine header bytes */
uint32_t frames = destlen / CD_FRAME_SIZE;
uint32_t complen_bytes = (destlen < 65536) ? 2 : 3;
uint32_t ecc_bytes = (frames + 7) / 8;
uint32_t header_bytes = ecc_bytes + complen_bytes;
/* extract compressed length of base */
uint32_t complen_base = (src[ecc_bytes + 0] << 8) | src[ecc_bytes + 1];
if (complen_bytes > 2)
complen_base = (complen_base << 8) | src[ecc_bytes + 2];
/* reset and decode */
zlib_codec_decompress(&cdzl->base_decompressor, &src[header_bytes], complen_base, &cdzl->buffer[0], frames * CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
zlib_codec_decompress(&cdzl->subcode_decompressor, &src[header_bytes + complen_base], complen - complen_base - header_bytes, &cdzl->buffer[frames * CD_MAX_SECTOR_DATA], frames * CD_MAX_SUBCODE_DATA);
#endif
/* reassemble the data */
for (framenum = 0; framenum < frames; framenum++)
{
memcpy(&dest[framenum * CD_FRAME_SIZE], &cdzl->buffer[framenum * CD_MAX_SECTOR_DATA], CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
memcpy(&dest[framenum * CD_FRAME_SIZE + CD_MAX_SECTOR_DATA], &cdzl->buffer[frames * CD_MAX_SECTOR_DATA + framenum * CD_MAX_SUBCODE_DATA], CD_MAX_SUBCODE_DATA);
#endif
#ifdef WANT_RAW_DATA_SECTOR
/* reconstitute the ECC data and sync header */
sector = (uint8_t *)&dest[framenum * CD_FRAME_SIZE];
if ((src[framenum / 8] & (1 << (framenum % 8))) != 0)
{
memcpy(sector, s_cd_sync_header, sizeof(s_cd_sync_header));
ecc_generate(sector);
}
#endif
}
return CHDERR_NONE;
}
/***************************************************************************
ZLIB COMPRESSION CODEC
***************************************************************************/
/*-------------------------------------------------
zlib_codec_init - initialize the ZLIB codec
-------------------------------------------------*/
chd_error zlib_codec_init(void *codec, uint32_t hunkbytes)
{
int zerr;
chd_error err;
zlib_codec_data *data = (zlib_codec_data*)codec;
/* clear the buffers */
memset(data, 0, sizeof(zlib_codec_data));
/* init the inflater first */
data->inflater.next_in = (Bytef *)data; /* bogus, but that's ok */
data->inflater.avail_in = 0;
data->inflater.zalloc = zlib_fast_alloc;
data->inflater.zfree = zlib_fast_free;
data->inflater.opaque = &data->allocator;
zerr = inflateInit2(&data->inflater, -MAX_WBITS);
/* convert errors */
if (zerr == Z_MEM_ERROR)
err = CHDERR_OUT_OF_MEMORY;
else if (zerr != Z_OK)
err = CHDERR_CODEC_ERROR;
else
err = CHDERR_NONE;
return err;
}
/*-------------------------------------------------
zlib_codec_free - free data for the ZLIB
codec
-------------------------------------------------*/
void zlib_codec_free(void *codec)
{
zlib_codec_data *data = (zlib_codec_data *)codec;
/* deinit the streams */
if (data != NULL)
{
int i;
zlib_allocator alloc;
inflateEnd(&data->inflater);
/* free our fast memory */
alloc = data->allocator;
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
if (alloc.allocptr[i])
free(alloc.allocptr[i]);
}
}
/*-------------------------------------------------
zlib_codec_decompress - decomrpess data using
the ZLIB codec
-------------------------------------------------*/
chd_error zlib_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
zlib_codec_data *data = (zlib_codec_data *)codec;
int zerr;
/* reset the decompressor */
data->inflater.next_in = (Bytef *)src;
data->inflater.avail_in = complen;
data->inflater.total_in = 0;
data->inflater.next_out = (Bytef *)dest;
data->inflater.avail_out = destlen;
data->inflater.total_out = 0;
zerr = inflateReset(&data->inflater);
if (zerr != Z_OK)
return CHDERR_DECOMPRESSION_ERROR;
/* do it */
zerr = inflate(&data->inflater, Z_FINISH);
(void)zerr;
if (data->inflater.total_out != destlen)
return CHDERR_DECOMPRESSION_ERROR;
return CHDERR_NONE;
}
/*-------------------------------------------------
zlib_fast_alloc - fast malloc for ZLIB, which
allocates and frees memory frequently
-------------------------------------------------*/
voidpf zlib_fast_alloc(voidpf opaque, uInt items, uInt size)
{
zlib_allocator *alloc = (zlib_allocator *)opaque;
UINT32 *ptr;
int i;
/* compute the size, rounding to the nearest 1k */
size = (size * items + 0x3ff) & ~0x3ff;
/* reuse a hunk if we can */
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
{
ptr = alloc->allocptr[i];
if (ptr && size == *ptr)
{
/* set the low bit of the size so we don't match next time */
*ptr |= 1;
return ptr + 1;
}
}
/* alloc a new one */
ptr = (UINT32 *)malloc(size + sizeof(UINT32));
if (!ptr)
return NULL;
/* put it into the list */
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
if (!alloc->allocptr[i])
{
alloc->allocptr[i] = ptr;
break;
}
/* set the low bit of the size so we don't match next time */
*ptr = size | 1;
return ptr + 1;
}
/*-------------------------------------------------
zlib_fast_free - fast free for ZLIB, which
allocates and frees memory frequently
-------------------------------------------------*/
void zlib_fast_free(voidpf opaque, voidpf address)
{
zlib_allocator *alloc = (zlib_allocator *)opaque;
UINT32 *ptr = (UINT32 *)address - 1;
int i;
/* find the hunk */
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
if (ptr == alloc->allocptr[i])
{
/* clear the low bit of the size to allow matches */
*ptr &= ~1;
return;
}
}
/***************************************************************************
libchdr_zlib.c
MAME Compressed Hunks of Data file format
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <libchdr/chd.h>
#include <libchdr/minmax.h>
#include <libchdr/cdrom.h>
#include <libchdr/huffman.h>
#include <libchdr/libchdr_zlib.h>
#include <zlib.h>
#include <retro_inline.h>
#include <streams/file_stream.h>
#define TRUE 1
#define FALSE 0
/* cdzl */
chd_error cdzl_codec_init(void *codec, uint32_t hunkbytes)
{
chd_error ret;
cdzl_codec_data* cdzl = (cdzl_codec_data*)codec;
/* make sure the CHD's hunk size is an even multiple of the frame size */
if (hunkbytes % CD_FRAME_SIZE != 0)
return CHDERR_CODEC_ERROR;
cdzl->buffer = (uint8_t*)malloc(sizeof(uint8_t) * hunkbytes);
if (cdzl->buffer == NULL)
return CHDERR_OUT_OF_MEMORY;
ret = zlib_codec_init(&cdzl->base_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#ifdef WANT_SUBCODE
ret = zlib_codec_init(&cdzl->subcode_decompressor, (hunkbytes / CD_FRAME_SIZE) * CD_MAX_SECTOR_DATA);
if (ret != CHDERR_NONE)
return ret;
#endif
return CHDERR_NONE;
}
void cdzl_codec_free(void *codec)
{
cdzl_codec_data* cdzl = (cdzl_codec_data*)codec;
zlib_codec_free(&cdzl->base_decompressor);
#ifdef WANT_SUBCODE
zlib_codec_free(&cdzl->subcode_decompressor);
#endif
if (cdzl->buffer)
free(cdzl->buffer);
}
chd_error cdzl_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
#ifdef WANT_RAW_DATA_SECTOR
uint8_t *sector;
#endif
uint32_t framenum;
cdzl_codec_data* cdzl = (cdzl_codec_data*)codec;
/* determine header bytes */
uint32_t frames = destlen / CD_FRAME_SIZE;
uint32_t complen_bytes = (destlen < 65536) ? 2 : 3;
uint32_t ecc_bytes = (frames + 7) / 8;
uint32_t header_bytes = ecc_bytes + complen_bytes;
/* extract compressed length of base */
uint32_t complen_base = (src[ecc_bytes + 0] << 8) | src[ecc_bytes + 1];
if (complen_bytes > 2)
complen_base = (complen_base << 8) | src[ecc_bytes + 2];
/* reset and decode */
zlib_codec_decompress(&cdzl->base_decompressor, &src[header_bytes], complen_base, &cdzl->buffer[0], frames * CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
zlib_codec_decompress(&cdzl->subcode_decompressor, &src[header_bytes + complen_base], complen - complen_base - header_bytes, &cdzl->buffer[frames * CD_MAX_SECTOR_DATA], frames * CD_MAX_SUBCODE_DATA);
#endif
/* reassemble the data */
for (framenum = 0; framenum < frames; framenum++)
{
memcpy(&dest[framenum * CD_FRAME_SIZE], &cdzl->buffer[framenum * CD_MAX_SECTOR_DATA], CD_MAX_SECTOR_DATA);
#ifdef WANT_SUBCODE
memcpy(&dest[framenum * CD_FRAME_SIZE + CD_MAX_SECTOR_DATA], &cdzl->buffer[frames * CD_MAX_SECTOR_DATA + framenum * CD_MAX_SUBCODE_DATA], CD_MAX_SUBCODE_DATA);
#endif
#ifdef WANT_RAW_DATA_SECTOR
/* reconstitute the ECC data and sync header */
sector = (uint8_t *)&dest[framenum * CD_FRAME_SIZE];
if ((src[framenum / 8] & (1 << (framenum % 8))) != 0)
{
memcpy(sector, s_cd_sync_header, sizeof(s_cd_sync_header));
ecc_generate(sector);
}
#endif
}
return CHDERR_NONE;
}
/***************************************************************************
ZLIB COMPRESSION CODEC
***************************************************************************/
/*-------------------------------------------------
zlib_codec_init - initialize the ZLIB codec
-------------------------------------------------*/
chd_error zlib_codec_init(void *codec, uint32_t hunkbytes)
{
int zerr;
chd_error err;
zlib_codec_data *data = (zlib_codec_data*)codec;
/* clear the buffers */
memset(data, 0, sizeof(zlib_codec_data));
/* init the inflater first */
data->inflater.next_in = (Bytef *)data; /* bogus, but that's ok */
data->inflater.avail_in = 0;
data->inflater.zalloc = zlib_fast_alloc;
data->inflater.zfree = zlib_fast_free;
data->inflater.opaque = &data->allocator;
zerr = inflateInit2(&data->inflater, -MAX_WBITS);
/* convert errors */
if (zerr == Z_MEM_ERROR)
err = CHDERR_OUT_OF_MEMORY;
else if (zerr != Z_OK)
err = CHDERR_CODEC_ERROR;
else
err = CHDERR_NONE;
return err;
}
/*-------------------------------------------------
zlib_codec_free - free data for the ZLIB
codec
-------------------------------------------------*/
void zlib_codec_free(void *codec)
{
zlib_codec_data *data = (zlib_codec_data *)codec;
/* deinit the streams */
if (data != NULL)
{
int i;
zlib_allocator alloc;
inflateEnd(&data->inflater);
/* free our fast memory */
alloc = data->allocator;
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
if (alloc.allocptr[i])
free(alloc.allocptr[i]);
}
}
/*-------------------------------------------------
zlib_codec_decompress - decomrpess data using
the ZLIB codec
-------------------------------------------------*/
chd_error zlib_codec_decompress(void *codec, const uint8_t *src, uint32_t complen, uint8_t *dest, uint32_t destlen)
{
zlib_codec_data *data = (zlib_codec_data *)codec;
int zerr;
/* reset the decompressor */
data->inflater.next_in = (Bytef *)src;
data->inflater.avail_in = complen;
data->inflater.total_in = 0;
data->inflater.next_out = (Bytef *)dest;
data->inflater.avail_out = destlen;
data->inflater.total_out = 0;
zerr = inflateReset(&data->inflater);
if (zerr != Z_OK)
return CHDERR_DECOMPRESSION_ERROR;
/* do it */
zerr = inflate(&data->inflater, Z_FINISH);
(void)zerr;
if (data->inflater.total_out != destlen)
return CHDERR_DECOMPRESSION_ERROR;
return CHDERR_NONE;
}
/*-------------------------------------------------
zlib_fast_alloc - fast malloc for ZLIB, which
allocates and frees memory frequently
-------------------------------------------------*/
voidpf zlib_fast_alloc(voidpf opaque, uInt items, uInt size)
{
zlib_allocator *alloc = (zlib_allocator *)opaque;
UINT32 *ptr;
int i;
/* compute the size, rounding to the nearest 1k */
size = (size * items + 0x3ff) & ~0x3ff;
/* reuse a hunk if we can */
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
{
ptr = alloc->allocptr[i];
if (ptr && size == *ptr)
{
/* set the low bit of the size so we don't match next time */
*ptr |= 1;
return ptr + 1;
}
}
/* alloc a new one */
ptr = (UINT32 *)malloc(size + sizeof(UINT32));
if (!ptr)
return NULL;
/* put it into the list */
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
if (!alloc->allocptr[i])
{
alloc->allocptr[i] = ptr;
break;
}
/* set the low bit of the size so we don't match next time */
*ptr = size | 1;
return ptr + 1;
}
/*-------------------------------------------------
zlib_fast_free - fast free for ZLIB, which
allocates and frees memory frequently
-------------------------------------------------*/
void zlib_fast_free(voidpf opaque, voidpf address)
{
zlib_allocator *alloc = (zlib_allocator *)opaque;
UINT32 *ptr = (UINT32 *)address - 1;
int i;
/* find the hunk */
for (i = 0; i < MAX_ZLIB_ALLOCS; i++)
if (ptr == alloc->allocptr[i])
{
/* clear the low bit of the size to allow matches */
*ptr &= ~1;
return;
}
}

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