From: Bastian Dehn <hhaalo@arcor.de>
Date: Sun, 26 Jan 2025 21:04:58 +0000 (+0100)
Subject: add tiff read and write pbm wrong
X-Git-Tag: v1.0.29^2~3^2~16
X-Git-Url: https://gitweb.hhaalo.de/?a=commitdiff_plain;h=61e0cb3833c7d0307bbd8289adc1a81863ba9de4;p=sane-kds-s2000w-net.git

add tiff read and write pbm wrong
---

diff --git a/src/kds_s2000w_image_converter_netpbm.c b/src/kds_s2000w_image_converter_netpbm.c
index 0d67d4f..30e662d 100644
--- a/src/kds_s2000w_image_converter_netpbm.c
+++ b/src/kds_s2000w_image_converter_netpbm.c
@@ -286,4 +286,51 @@ void kds_s2000w_image_converter_tiff_to_pnm(blobdata* in, blobdata* out)
 
 	if (!kds_s2000w_image_type_check_is_tiff(in))
 		return;
+
+	FILE* tiff_stream = fmemopen(in->data, in->size, "r");
+	TIFF* tiff = TIFFClientOpen("input.tiff", "r", tiff_stream,
+		_kds_s2000w_image_converter_tiff_read,
+		_kds_s2000w_image_converter_tiff_write,
+		_kds_s2000w_image_converter_tiff_seek,
+		_kds_s2000w_image_converter_tiff_close,
+		_kds_s2000w_image_converter_tiff_size,
+		NULL, NULL);
+
+	int width = 0;
+	int height = 0;
+	TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &width);
+	TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &height);
+
+	bit** bits = malloc(sizeof(bit*) * height);
+	for (int i = 0; i < height; i++) {
+		bits[i] = malloc(sizeof(bit) * width);
+	}
+
+	unsigned char* rowbuf = malloc(sizeof(unsigned char) * width);
+	for (int i = 0; i < height; i++) {
+		TIFFReadScanline(tiff, bits[i], i, 0);
+	}
+	free(rowbuf);
+	rowbuf = NULL;
+
+	char** outdata = malloc(sizeof(char*));
+	FILE* pnm_stream = open_memstream(outdata, &out->size);
+	pbm_writepbm(pnm_stream, bits, width, height, 0);
+	fclose(pnm_stream);
+	pnm_stream = NULL;
+
+	out->data = malloc(sizeof(char) * out->size);
+	memcpy(out->data, *outdata, out->size);
+
+	free(*outdata);
+	*outdata = NULL;
+	free(outdata);
+	outdata = NULL;
+	TIFFClose(tiff);
+	for (int i = 0; i < height; i++) {
+		free(bits[i]);
+		bits[i] = NULL;
+	}
+	free(bits);
+	bits = NULL;
 }