backends: Enhance to add multipage capabilities.

DNP ds40/ds80 and Sony UP-DR150/200 backends do NOT support this yet.

Next up is to commit the core.

backend_canonselphy.c

@@ -321,6 +321,8 @@ static void *canonselphy_init(void)
 	/* Static initialization */
 	setup_paper_codes();
 
+	ctx->buffer = malloc(MAX_HEADER);
+
 	return ctx;
 }
 
@@ -352,6 +354,7 @@ static void canonselphy_teardown(void *vctx) {
 		free(ctx->plane_c);
 	if (ctx->footer)
 		free(ctx->footer);
+
 	if (ctx->buffer)
 		free(ctx->buffer);
 
@@ -363,7 +366,8 @@ static int canonselphy_early_parse(void *vctx, int data_fd)
 	struct canonselphy_ctx *ctx = vctx;
 	int printer_type, i;
 
-	ctx->buffer = malloc(MAX_HEADER);
+	if (!ctx)
+		return 1;
 
 	/* Figure out printer this file is intended for */
 	i = read(data_fd, ctx->buffer, MAX_HEADER);
@@ -374,7 +378,6 @@ static int canonselphy_early_parse(void *vctx, int data_fd)
 		return i;
 	}
 
-
 	printer_type = parse_printjob(ctx->buffer, &ctx->bw_mode, &ctx->plane_len);
 	for (i = 0; selphy_printers[i].type != -1; i++) {
 		if (selphy_printers[i].type == printer_type) {
@@ -403,6 +406,20 @@ static int canonselphy_read_parse(void *vctx, int data_fd)
 	struct canonselphy_ctx *ctx = vctx;
 	int i, remain;
 
+	if (!ctx)
+		return 1;
+
+	if (ctx->header)
+		free(ctx->header);
+	if (ctx->plane_y)
+		free(ctx->plane_y);
+	if (ctx->plane_m)
+		free(ctx->plane_m);
+	if (ctx->plane_c)
+		free(ctx->plane_c);
+	if (ctx->footer)
+		free(ctx->footer);
+
 	/* Set up buffers */
 	ctx->plane_y = malloc(ctx->plane_len);
 	ctx->plane_m = malloc(ctx->plane_len);
@@ -637,7 +654,8 @@ top:
 
 struct dyesub_backend canonselphy_backend = {
 	.name = "Canon SELPHY CP/ES",
-	.version = "0.63",
+	.version = "0.64",
+	.multipage_capable = 1,
 	.uri_prefix = "canonselphy",
 	.init = canonselphy_init,
 	.attach = canonselphy_attach,

backend_kodak1400.c

@@ -297,6 +297,12 @@ static int kodak1400_read_parse(void *vctx, int data_fd) {
 	if (!ctx)
 		return 1;
 
+	if (ctx->plane_r)
+		free(ctx->plane_r);
+	if (ctx->plane_g)
+		free(ctx->plane_g);
+	if (ctx->plane_b)
+		free(ctx->plane_b);
 
 	/* Read in then validate header */
 	ret = read(data_fd, &ctx->hdr, sizeof(ctx->hdr));
@@ -560,8 +566,9 @@ top:
 
 struct dyesub_backend kodak1400_backend = {
 	.name = "Kodak 1400/805",
-	.version = "0.26",
+	.version = "0.27",
 	.uri_prefix = "kodak1400",
+	.multipage_capable = 1,
 	.cmdline_usage = kodak1400_cmdline,
 	.cmdline_arg = kodak1400_cmdline_arg,
 	.init = kodak1400_init,

backend_kodak605.c

@@ -124,6 +124,9 @@ static int kodak605_read_parse(void *vctx, int data_fd) {
 	if (!ctx)
 		return 1;
 
+	if (ctx->databuf)
+		free(ctx->databuf);
+
 	/* Read in then validate header */
 	ret = read(data_fd, &ctx->hdr, sizeof(ctx->hdr));
 	if (ret < 0 || ret != sizeof(ctx->hdr)) {
@@ -488,8 +491,9 @@ static int kodak605_cmdline_arg(void *vctx, int run, char *arg1, char *arg2)
 /* Exported */
 struct dyesub_backend kodak605_backend = {
 	.name = "Kodak 605",
-	.version = "0.13",
+	.version = "0.14",
 	.uri_prefix = "kodak605",
+	.multipage_capable = 1,
 	.cmdline_usage = kodak605_cmdline,
 	.cmdline_arg = kodak605_cmdline_arg,
 	.init = kodak605_init,

backend_kodak6800.c

@@ -350,6 +350,9 @@ static int kodak6800_read_parse(void *vctx, int data_fd) {
 	if (!ctx)
 		return 1;
 
+	if (ctx->databuf)
+		free(ctx->databuf);
+
 	/* Read in then validate header */
 	ret = read(data_fd, &ctx->hdr, sizeof(ctx->hdr));
 	if (ret < 0 || ret != sizeof(ctx->hdr)) {
@@ -601,8 +604,9 @@ skip_query:
 /* Exported */
 struct dyesub_backend kodak6800_backend = {
 	.name = "Kodak 6800/6850",
-	.version = "0.27",
+	.version = "0.28",
 	.uri_prefix = "kodak6800",
+	.multipage_capable = 1,
 	.cmdline_usage = kodak6800_cmdline,
 	.cmdline_arg = kodak6800_cmdline_arg,
 	.init = kodak6800_init,

backend_shinkos2145.c

@@ -1408,6 +1408,9 @@ static int shinkos2145_read_parse(void *vctx, int data_fd) {
 	if (!ctx)
 		return 1;
 
+	if (ctx->databuf)
+		free(ctx->databuf);
+
 	if (getenv("FAST_RETURN"))
 		ctx->fast_return = 1;
 
@@ -1658,7 +1661,8 @@ static int shinkos2145_query_serno(struct libusb_device_handle *dev, uint8_t end
 
 struct dyesub_backend shinkos2145_backend = {
 	.name = "Shinko/Sinfonia CHC-S2145 (S2)",
-	.version = "0.26",
+	.version = "0.27",
+	.multipage_capable = 1,
 	.uri_prefix = "shinkos2145",
 	.cmdline_usage = shinkos2145_cmdline,
 	.cmdline_arg = shinkos2145_cmdline_arg,