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patch.c - don't rely on HAVE_ZLIB anymore

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This commit is contained in:
twinaphex 2016-09-19 01:54:34 +02:00
parent 147bac9800
commit 11e574b4d0
1 changed files with 9 additions and 50 deletions
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59
patch.c
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@ -29,9 +29,7 @@
#include <retro_stat.h>
#include <string/stdstring.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <encodings/crc32.h>
#include "msg_hash.h"
#include "patch.h"
@ -88,12 +86,8 @@ typedef enum patch_error (*patch_func_t)(const uint8_t*, size_t,
static uint8_t bps_read(struct bps_data *bps)
{
uint8_t data = bps->modify_data[bps->modify_offset++];
#ifdef HAVE_ZLIB
const struct file_archive_file_backend *stream_backend =
file_archive_get_zlib_file_backend();
bps->modify_checksum = ~stream_backend->stream_crc_calculate(
~bps->modify_checksum, &data, 1);
#endif
bps->modify_checksum = ~(encoding_crc32(
~bps->modify_checksum, &data, 1));
return data;
}
@ -116,17 +110,11 @@ static uint64_t bps_decode(struct bps_data *bps)
static void bps_write(struct bps_data *bps, uint8_t data)
{
#ifdef HAVE_ZLIB
const struct file_archive_file_backend *stream_backend =
file_archive_get_zlib_file_backend();
#endif
if (!bps)
return;
bps->target_data[bps->output_offset++] = data;
#ifdef HAVE_ZLIB
bps->target_checksum = ~stream_backend->stream_crc_calculate(~bps->target_checksum, &data, 1);
#endif
bps->target_checksum = ~(encoding_crc32(~bps->target_checksum, &data, 1));
}
static enum patch_error bps_apply_patch(
@ -140,10 +128,6 @@ static enum patch_error bps_apply_patch(
struct bps_data bps = {0};
uint32_t modify_source_checksum = 0, modify_target_checksum = 0,
modify_modify_checksum = 0, checksum;
#ifdef HAVE_ZLIB
const struct file_archive_file_backend *stream_backend =
file_archive_get_zlib_file_backend();
#endif
if (modify_length < 19)
return PATCH_PATCH_TOO_SMALL;
@ -229,13 +213,8 @@ static enum patch_error bps_apply_patch(
for (i = 0; i < 32; i += 8)
modify_modify_checksum |= bps_read(&bps) << i;
#ifdef HAVE_ZLIB
bps.source_checksum = stream_backend->stream_crc_calculate(0,
bps.source_checksum = encoding_crc32(0,
bps.source_data, bps.source_length);
#else
return PATCH_PATCH_CHECKSUM_INVALID;
#endif
bps.target_checksum = ~bps.target_checksum;
if (bps.source_checksum != modify_source_checksum)
@ -252,18 +231,11 @@ static enum patch_error bps_apply_patch(
static uint8_t ups_patch_read(struct ups_data *data)
{
#ifdef HAVE_ZLIB
const struct file_archive_file_backend *stream_backend =
file_archive_get_zlib_file_backend();
#endif
if (data && data->patch_offset < data->patch_length)
{
uint8_t n = data->patch_data[data->patch_offset++];
#ifdef HAVE_ZLIB
data->patch_checksum =
~stream_backend->stream_crc_calculate(~data->patch_checksum, &n, 1);
#endif
~(encoding_crc32(~data->patch_checksum, &n, 1));
return n;
}
return 0x00;
@ -271,18 +243,11 @@ static uint8_t ups_patch_read(struct ups_data *data)
static uint8_t ups_source_read(struct ups_data *data)
{
#ifdef HAVE_ZLIB
const struct file_archive_file_backend *stream_backend =
file_archive_get_zlib_file_backend();
#endif
if (data && data->source_offset < data->source_length)
{
uint8_t n = data->source_data[data->source_offset++];
#ifdef HAVE_ZLIB
data->source_checksum =
~stream_backend->stream_crc_calculate(~data->source_checksum, &n, 1);
#endif
data->source_checksum =
~(encoding_crc32(~data->source_checksum, &n, 1));
return n;
}
return 0x00;
@ -290,18 +255,12 @@ static uint8_t ups_source_read(struct ups_data *data)
static void ups_target_write(struct ups_data *data, uint8_t n)
{
#ifdef HAVE_ZLIB
const struct file_archive_file_backend *stream_backend =
file_archive_get_zlib_file_backend();
#endif
if (data && data->target_offset < data->target_length)
{
data->target_data[data->target_offset] = n;
#ifdef HAVE_ZLIB
data->target_checksum =
~stream_backend->stream_crc_calculate(~data->target_checksum, &n, 1);
#endif
~(encoding_crc32(~data->target_checksum, &n, 1));
}
if (data)