Merge branch 'master' into release/0.96.4

Author: cfsmp3

docs/CHANGES.TXT

@@ -8,6 +8,7 @@
 - Fix: Prevent heap buffer overflow in Teletext processing (security fix)
 - Fix: Lazy OCR initialization - only initialize when first DVB subtitle is encountered
 - Build: Optimized Windows CI workflow for faster builds
+- Fix: Updated GUI with version 0.7.1. A blind attempt to fix a hang on start on some Windows.
 
 0.96.3 (2025-12-29)
 -------------------

src/lib_ccx/dvb_subtitle_decoder.c

@@ -182,6 +182,7 @@ typedef struct DVBSubContext
 	LLONG time_out;
 #ifdef ENABLE_OCR
 	void *ocr_ctx;
+	int ocr_initialized; // Flag to track if OCR has been lazily initialized
 #endif
 	DVBSubRegion *region_list;
 	DVBSubCLUT *clut_list;
@@ -442,7 +443,11 @@ void *dvbsub_init_decoder(struct dvb_config *cfg)
 	}
 
 #ifdef ENABLE_OCR
-	ctx->ocr_ctx = init_ocr(ctx->lang_index);
+	// Lazy OCR initialization: don't init here, wait until a bitmap actually needs OCR
+	// This avoids ~10 second Tesseract startup overhead for files that have DVB streams
+	// but don't actually produce any bitmap subtitles (e.g., files with CEA-608 captions)
+	ctx->ocr_ctx = NULL;
+	ctx->ocr_initialized = 0;
 #endif
 	ctx->version = -1;
 
@@ -1701,6 +1706,12 @@ static int write_dvb_sub(struct lib_cc_decode *dec_ctx, struct cc_subtitle *sub)
 	// Perform OCR
 #ifdef ENABLE_OCR
 	char *ocr_str = NULL;
+	// Lazy OCR initialization: only init when we actually have a bitmap to process
+	if (!ctx->ocr_initialized)
+	{
+		ctx->ocr_ctx = init_ocr(ctx->lang_index);
+		ctx->ocr_initialized = 1; // Mark as initialized even if init_ocr returns NULL
+	}
 	if (ctx->ocr_ctx)
 	{
 		int ret = ocr_rect(ctx->ocr_ctx, rect, &ocr_str, region->bgcolor, dec_ctx->ocr_quantmode);

src/lib_ccx/ts_functions.c

@@ -6,6 +6,7 @@
 #include "dvb_subtitle_decoder.h"
 #include "ccx_decoders_isdb.h"
 #include "file_buffer.h"
+#include <inttypes.h>
 
 #ifdef DEBUG_SAVE_TS_PACKETS
 #include <sys/types.h>
@@ -568,6 +569,13 @@ int copy_capbuf_demux_data(struct ccx_demuxer *ctx, struct demuxer_data **data,
 
 	if (cinfo->codec == CCX_CODEC_TELETEXT)
 	{
+		if (cinfo->capbuflen > BUFSIZE - ptr->len)
+		{
+			fatal(CCX_COMMON_EXIT_BUG_BUG,
+			      "Teletext packet (%" PRId64 ") larger than remaining buffer (%" PRId64 ").\n",
+			      cinfo->capbuflen, (int64_t)(BUFSIZE - ptr->len));
+		}
+
 		memcpy(ptr->buffer + ptr->len, cinfo->capbuf, cinfo->capbuflen);
 		ptr->len += cinfo->capbuflen;
 		return CCX_OK;

src/rust/lib_ccxr/src/common/constants.rs

@@ -147,7 +147,11 @@ pub const CCX_DECODER_608_SCREEN_WIDTH: usize = 32;
 pub const ONEPASS: usize = 120; // Bytes we can always look ahead without going out of limits
 pub const BUFSIZE: usize = 2048 * 1024 + ONEPASS; // 2 Mb plus the safety pass
 pub const MAX_CLOSED_CAPTION_DATA_PER_PICTURE: usize = 32;
-pub const EIA_708_BUFFER_LENGTH: usize = 2048; // TODO: Find out what the real limit is
+/// CEA-708 Service Input Buffer size.
+/// Specification minimum is 128 bytes per service, but we use 2048 bytes
+/// (16x the minimum) to provide a safety margin for buffer management.
+/// Reference: CEA-708-E Section 8.4.3 - Service Input Buffers
+pub const EIA_708_BUFFER_LENGTH: usize = 2048;
 pub const TS_PACKET_PAYLOAD_LENGTH: usize = 184; // From specs
 pub const SUBLINESIZE: usize = 2048; // Max. length of a .srt line - TODO: Get rid of this
 pub const STARTBYTESLENGTH: usize = 1024 * 1024;

src/rust/lib_ccxr/src/net/target.rs

@@ -82,7 +82,6 @@ impl<'a> SendTarget<'a> {
                 "Unable to connect, address passed is null\n"
             );
         }
-        info!("Target address: {}\n", config.target_addr); // TODO remove this
         info!("Target port: {}\n", config.port.unwrap_or(DEFAULT_TCP_PORT));
         let tcp_stream = TcpStream::connect((
             config.target_addr,