# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1701284089 -7200
# Node ID 262395b86b7cacbb00e19bf291e9d190ec84cace
# Parent  4fc62ffe19691ecd7e9477e2070b4ac8c755d92e
Add support for unknown plain multicolor viewer format XX9.

diff -r 4fc62ffe1969 -r 262395b86b7c tools/lib64fmts.c
--- a/tools/lib64fmts.c	Wed Nov 29 20:54:04 2023 +0200
+++ b/tools/lib64fmts.c	Wed Nov 29 20:54:49 2023 +0200
@@ -179,6 +179,27 @@
 }
 
 
+static const Uint8 fmtFormatXX9_MagicID_1[] =
+{
+    0x01, 0x08, 0x0b, 0x08,  0xe0, 0x02, 0x9e, 0x32,
+    0x30, 0x36, 0x31, 0x00,  0x00, 0x00, 0xa2, 0x19,
+    0xb5, 0x02, 0x9d, 0x6f,  0x31, 0xca, 0x10, 0xf8,
+    0xa9, 0x0e, 0x20, 0xd2,  0xff, 0xa5, 0x01, 0x48,
+    0x29, 0xf8, 0x09, 0x06,  0x85, 0x01, 0x20, 0x65,
+    0x08, 0x68, 0x8d, 0x8e,  0x31, 0xba, 0x8e, 0x8d,
+};
+
+static int fmtProbeFormatXX9(const DMGrowBuf *buf, const DMC64ImageFormat *fmt)
+{
+    if (buf->len == fmt->size &&
+        DM_MEMCMP_SIZE(buf->data, fmtFormatXX9_MagicID_1) == 0
+        )
+        return DM_PROBE_SCORE_MAX;
+
+    return DM_PROBE_SCORE_FALSE;
+}
+
+
 // Basic probe, but return MAX score for this format
 static int fmtProbeGigapaintHires(const DMGrowBuf *buf, const DMC64ImageFormat *fmt)
 {
@@ -3682,6 +3703,30 @@
         NULL
     },
 
+    {
+        "xx9", "Unknown $0801 format (viewer) (unpacked)", 0x0801, 10608, 0, DM_FMT_RD,
+        fmtProbeFormatXX9,
+        NULL, NULL,
+        {
+            D64_FMT_MC,
+            D64_SCR_WIDTH / 2, D64_SCR_HEIGHT,
+            D64_SCR_CH_WIDTH , D64_SCR_CH_HEIGHT,
+            2, 1,
+            NULL, NULL,
+            NULL,
+            {
+                { DO_COPY      , DS_BITMAP_RAM  , 0x0a38 - 0x0801, 0,  0,   0, NULL, NULL, DF_NORMAL },
+                { DO_COPY      , DS_SCREEN_RAM  , 0x297a - 0x0801, 0,  0,   0, NULL, NULL, DF_NORMAL },
+                { DO_COPY      , DS_COLOR_RAM   , 0x2d62 - 0x0801, 0,  0,   0, NULL, NULL, DF_NORMAL },
+                { DO_SET_MEM_LO, DS_BGCOL       , 0x2979 - 0x0801, 0,  0,   0, NULL, NULL, DF_NORMAL },
+                { DO_SET_MEM_LO, DS_D020        , 0x2978 - 0x0801, 0,  0,   0, NULL, NULL, DF_NORMAL },
+                { DO_LAST      , 0              , 0              , 0,  0,   0, NULL, NULL, DF_NORMAL },
+            }
+         },
+        NULL
+    },
+
+
 };
 
 const int ndmC64ImageFormats = sizeof(dmC64ImageFormats) / sizeof(dmC64ImageFormats[0]);