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Load_2GS() improvements

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Logs and error checking
This commit is contained in:
Thomas Bernard 2023-04-08 19:35:47 +02:00
parent e32f915a5c
commit 5b9f491d34
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GPG Key ID: DB511043A31ACAAF
1 changed files with 17 additions and 5 deletions
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22
src/2gsformats.c
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@ -144,21 +144,29 @@ void Load_2GS(T_IO_Context * context)
if (Config.Clear_palette)
memset(context->Palette, 0, sizeof(T_Palette));
for (palindex = 0; palindex < palcount; palindex++)
for (palindex = 0; palindex < palcount && palindex < 16; palindex++)
{
if (!Load_2GS_Palette(context->Palette + (palindex * 16), file))
goto error;
}
if (palindex < palcount)
{
GFX2_Log(GFX2_WARNING, "2GS %u palettes, skipping %u of them !\n",
(unsigned)palcount, (unsigned)(palcount - palindex));
fseek(file, 16*2*(palcount - palindex), SEEK_CUR);
}
if (!Read_word_le(file, &height))
goto error;
lineoffset = ftell(file);
dataoffset = lineoffset + 4 * (long)height;
GFX2_Log(GFX2_DEBUG, " mode %02x %ux%u %u palettes\n", mode, (unsigned)width, (unsigned)height, (unsigned)palcount);
GFX2_Log(GFX2_DEBUG, "2GS mode %02x %ux%u %u palette(s)\n", mode, (unsigned)width, (unsigned)height, (unsigned)palcount);
if (palcount > 16)
palcount = 16;
// read other chunks before decoding the picture
GFX2_Log(GFX2_DEBUG, "file_size : %06lx, chunksize : %06lx, current offset : %06lx\n", file_size, chunksize, dataoffset);
GFX2_Log(GFX2_DEBUG, "2GS file_size : %06lx, chunksize : %06lx, current offset : %06lx\n", file_size, chunksize, dataoffset);
offset = chunksize;
while (offset < (long)file_size)
while (chunksize > 0 && offset < (long)file_size)
{
char * p;
byte c;
@ -182,7 +190,9 @@ void Load_2GS(T_IO_Context * context)
{
fread(p, 1, len, file);
p[len] = '\0';
GFX2_Log(GFX2_DEBUG, "%s\n", p);
GFX2_Log(GFX2_DEBUG, " \"%s\"\n", p);
strncpy(context->Comment, p, COMMENT_SIZE);
context->Comment[COMMENT_SIZE] = '\0';
}
}
}
@ -203,6 +213,8 @@ void Load_2GS(T_IO_Context * context)
{
// all palettes are there...
multipaloffset = ftell(file);
GFX2_Log(GFX2_DEBUG, "2GS MULTIPAL count %u offset %06lx\n",
(unsigned)multipalcount, multipaloffset);
}
}
free(p);