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Merge pull request #3862 from leiradel/master

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Revert cheevos.c because of problems with some ROMs.
This commit is contained in:
Twinaphex 2016-10-26 23:06:02 +02:00 committed by GitHub
commit 5a70656746
1 changed files with 25 additions and 8 deletions
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33
cheevos.c
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@ -1812,14 +1812,21 @@ static INLINE unsigned cheevos_next_power_of_2(unsigned n)
static size_t cheevos_eval_md5(
const struct retro_game_info *info,
size_t offset,
size_t max_size,
MD5_CTX *ctx)
{
MD5_Init(ctx);
if (info->data)
{
MD5_Update(ctx, (void*)(uint8_t*)info->data + offset, info->size - offset);
return info->size - offset;
if (max_size == 0)
max_size = info->size;
if (info->size - offset < max_size)
max_size = info->size - offset;
MD5_Update(ctx, (void*)(uint8_t*)info->data + offset, max_size);
return max_size;
}
else
{
@ -1830,17 +1837,26 @@ static size_t cheevos_eval_md5(
if (!file)
return 0;
if (max_size == 0)
max_size = (size_t)-1;
for (;;)
{
uint8_t buffer[4096];
size_t to_read = sizeof(buffer);
if (to_read > max_size)
to_read = max_size;
ssize_t num_read = filestream_read(file,
(void*)buffer, sizeof(buffer));
(void*)buffer, to_read);
if (num_read <= 0)
break;
MD5_Update(ctx, (void*)buffer, num_read);
size += num_read;
max_size -= num_read;
}
filestream_close(file);
@ -1873,7 +1889,7 @@ static unsigned cheevos_find_game_id_generic(
MD5_CTX ctx;
retro_time_t to;
uint8_t hash[16];
size_t size = cheevos_eval_md5(info, 0, &ctx);
size_t size = cheevos_eval_md5(info, 0, 0, &ctx);
hash[0] = '\0';
@ -1892,7 +1908,7 @@ static unsigned cheevos_find_game_id_snes(
{
MD5_CTX ctx;
uint8_t hash[16];
size_t count = cheevos_eval_md5(info, 0, &ctx);
size_t count = cheevos_eval_md5(info, 0, 0, &ctx);
if (count == 0)
{
@ -1911,7 +1927,7 @@ static unsigned cheevos_find_game_id_genesis(
{
MD5_CTX ctx;
uint8_t hash[16];
size_t count = cheevos_eval_md5(info, 0, &ctx);
size_t count = cheevos_eval_md5(info, 0, 0, &ctx);
if (count == 0)
{
@ -2002,8 +2018,9 @@ static unsigned cheevos_find_game_id_nes(
offset = sizeof(header) + (header.rom_type & 4 ? sizeof(header) : 0);
MD5_Init(&ctx);
count = cheevos_eval_md5(info, offset, &ctx);
cheevos_fill_md5(0x4000 * bytes - count, 0xff, &ctx);
count = cheevos_eval_md5(info, offset, 0x4000 * bytes, &ctx);
count = 0x4000 * bytes - count;
cheevos_fill_md5(count, 0xff, &ctx);
MD5_Final(hash, &ctx);
return cheevos_get_game_id(hash, &timeout);