feat: Add dtvcc_rust field for storing rust Dtvcc struct

Author: IshanGrover2004

src/lib_ccx/ccx_decoders_common.c

@@ -232,6 +232,10 @@ int do_cb(struct lib_cc_decode *ctx, unsigned char *cc_block, struct cc_subtitle
 void dinit_cc_decode(struct lib_cc_decode **ctx)
 {
 	struct lib_cc_decode *lctx = *ctx;
+
+#ifndef DISABLE_RUST
+	ccxr_dtvcc_free(lctx->dtvcc_rust);
+#endif
 	dtvcc_free(&lctx->dtvcc);
 	dinit_avc(&lctx->avc_ctx);
 	ccx_decoder_608_dinit_library(&lctx->context_cc608_field_1);
@@ -261,6 +265,9 @@ struct lib_cc_decode *init_cc_decode(struct ccx_decoders_common_settings_t *sett
 	ctx->no_rollup = setting->no_rollup;
 	ctx->noscte20 = setting->noscte20;
 
+#ifndef DISABLE_RUST
+	ctx->dtvcc_rust = ccxr_dtvcc_init(setting->settings_dtvcc);
+#endif
 	ctx->dtvcc = dtvcc_init(setting->settings_dtvcc);
 	ctx->dtvcc->is_active = setting->settings_dtvcc->enabled;
 

src/lib_ccx/ccx_decoders_structs.h

@@ -208,6 +208,9 @@ struct lib_cc_decode
     int stat_divicom;
     int false_pict_header;
 
+	// For storing Dtvcc struct initialised in rust
+	void* dtvcc_rust;
+
 	dtvcc_ctx *dtvcc;
 	int current_field;
 	// Analyse/use the picture information