From 1478a9f83f2ccfcc58bb0bf0ce050bf4b40d1fb8 Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Mon, 13 Dec 2021 18:56:33 +0100
Subject: Add a tool to extract information from WebP

---
 tools/jpeginfo.c | 94 --------------------------------------------------------
 1 file changed, 94 deletions(-)

(limited to 'tools/jpeginfo.c')

diff --git a/tools/jpeginfo.c b/tools/jpeginfo.c
index d3d9b59..f1e614a 100644
--- a/tools/jpeginfo.c
+++ b/tools/jpeginfo.c
@@ -25,100 +25,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-// --- ICC profiles ------------------------------------------------------------
-// v2 https://www.color.org/ICC_Minor_Revision_for_Web.pdf
-// v4 https://www.color.org/specification/ICC1v43_2010-12.pdf
-
-static jv
-parse_icc_mluc(jv o, const uint8_t *tag, uint32_t tag_length)
-{
-	// v4 10.13
-	if (tag_length < 16)
-		return add_warning(o, "invalid ICC 'mluc' structure length");
-
-	uint32_t count = u32be(tag + 8);
-	if (count == 0)
-		return add_warning(o, "unnamed ICC profile");
-
-	// There is no particularly good reason for us to iterate, take the first.
-	const uint8_t *record = tag + 16 /* + i * u32be(tag + 12) */;
-	uint32_t len = u32be(&record[4]);
-	uint32_t off = u32be(&record[8]);
-
-	if (off + len > tag_length)
-		return add_warning(o, "invalid ICC 'mluc' structure record");
-
-	// Blindly assume simple ASCII, ensure NUL-termination.
-	char name[len], *p = name;
-	for (uint32_t i = 0; i < len / 2; i++)
-		*p++ = tag[off + i * 2 + 1];
-	*p++ = 0;
-	return jv_set(o, jv_string("ICC"),
-		JV_OBJECT(jv_string("name"), jv_string(name),
-			jv_string("version"), jv_number(4)));
-}
-
-static jv
-parse_icc_desc(jv o, const uint8_t *profile, size_t profile_len,
-	uint32_t tag_offset, uint32_t tag_length)
-{
-	const uint8_t *tag = profile + tag_offset;
-	if (tag_offset + tag_length > profile_len)
-		return add_warning(o, "unexpected end of ICC profile");
-	if (tag_length < 4)
-		return add_warning(o, "invalid ICC tag structure length");
-
-	// v2 6.5.17
-	uint32_t sig = u32be(tag);
-	if (sig == 0x6D6C7563 /* mluc */)
-		return parse_icc_mluc(o, profile + tag_offset, tag_length);
-	if (sig != 0x64657363 /* desc */)
-		return add_warning(o, "invalid ICC 'desc' structure signature");
-	if (tag_length < 12)
-		return add_warning(o, "invalid ICC 'desc' structure length");
-
-	uint32_t count = u32be(tag + 8);
-	if (tag_length < 12 + count)
-		return add_warning(o, "invalid ICC 'desc' structure length");
-
-	// Double-ensure a trailing NUL byte.
-	char name[count + 1];
-	memcpy(name, tag + 12, count);
-	name[count] = 0;
-	return jv_set(o, jv_string("ICC"),
-		JV_OBJECT(jv_string("name"), jv_string(name),
-			jv_string("version"), jv_number(2)));
-}
-
-static jv
-parse_icc(jv o, const uint8_t *profile, size_t profile_len)
-{
-	// v2 6, v4 7
-	if (profile_len < 132)
-		return add_warning(o, "ICC profile too short");
-	if (u32be(profile) != profile_len)
-		return add_warning(o, "ICC profile size mismatch");
-
-	// TODO(p): May decode more of the header fields, and validate them.
-	// Need to check both v2 and v4, this is all fairly annoying.
-	uint32_t count = u32be(profile + 128);
-	if (132 + count * 12 > profile_len)
-		return add_warning(o, "unexpected end of ICC profile");
-
-	for (uint32_t i = 0; i < count; i++) {
-		const uint8_t *entry = profile + 132 + i * 12;
-		uint32_t sig = u32be(&entry[0]);
-		uint32_t off = u32be(&entry[4]);
-		uint32_t len = u32be(&entry[8]);
-
-		// v2 6.4.32, v4 9.2.41
-		if (sig == 0x64657363 /* desc */)
-			return parse_icc_desc(o, profile, profile_len, off, len);
-	}
-	// The description is required, so this should be unreachable.
-	return jv_set(o, jv_string("ICC"), jv_bool(true));
-}
-
 // --- Multi-Picture Format ----------------------------------------------------
 
 enum {
-- 
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