From f65b09547c1664aa887ae1f7187c217216c661ec Mon Sep 17 00:00:00 2001
From: Ke Gong<ke.gong@amlogic.com>
Date: Thu, 23  Nov  2017  01:03:30  +0000
Subject: Revert "caption: fixed caption decoder [1/1]"

This reverts commit c5d69bd0149f61ff4389007afab3a278609a1afd.
---
diff --git a/src/caption.c b/src/caption.c
index 040a658..3d7508c 100644
--- a/src/caption.c
+++ b/src/caption.c
@@ -908,7 +908,7 @@ erase_memory(struct caption *cc, cc_channel *ch, int page)
 {
 	vbi_page *pg = ch->pg + page;
 	vbi_char *acp = pg->text;
-	memset(pg->text, 0, sizeof(pg->text));
+	memset(pg->text, 0, 1056*sizeof(vbi_char));
 #if 0
 	//vbi_char c = cc->transp_space[ch >= &cc->channel[4]];
 	vbi_char c = {0};
@@ -980,7 +980,6 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 			set_cursor(ch, 1, row);
 
 		if (c2 & 0x10) {
-			/*
 			col = ch->col;
 
 			for (i = (c2 & 14) * 2; i > 0 && col < COLUMNS - 1; i--)
@@ -988,9 +987,6 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 
 			if (col > ch->col)
 				ch->col = ch->col1 = col;
-			*/
-
-			ch->col = (c2 & 14) * 2 + 1;
 
 			ch->attr.italic = FALSE;
 			ch->attr.foreground = VBI_WHITE;
@@ -1058,19 +1054,6 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 	case 2:		/* Optional Extended Characters	001 c01f  01x xxxx */
 	case 3:
 		/* Send specs to the maintainer of this code */
-		{
-			vbi_char c;
-
-			c = ch->attr;
-			c.unicode = vbi_caption_unicode((c1 << 8) | c2 | 0x1000, 0);
-
-			if (c.unicode) {
-				if (ch->col > 1)
-					ch->col --;
-
-				put_char(cc, ch, c);
-			}
-		}
 		return;
 
 	case 4:		/* Misc Control Codes		001 c10f  010 xxxx */
@@ -1160,10 +1143,8 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 // not verified
 			if (ch->mode) {
 				if (ch->col > 1) {
-					if (ch->line[ch->col - 1].unicode == 0)
-						return;
 					ch->col --;
-				} else if (ch->row > 0) {
+				} else if (ch->row > 1) {
 					vbi_char *acp;
 
 					ch->row --;
@@ -1172,9 +1153,9 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 					ch->col  = COLUMNS - 1;
 					acp = ch->line + COLUMNS - 1;
 
-					while (ch->col > 1) {
+					while (ch->col > 0) {
 						if (acp->unicode != 0)
-						      break;
+						break;
 
 						acp --;
 						ch->col --;
@@ -1213,12 +1194,13 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 				word_break(cc, ch, 1);
 				ch->update = 1;
 
-				if (ch->mode == MODE_ROLL_UP) {
-					memmove(acp, acp + COLUMNS, sizeof(*acp) * (ch->roll - 1) * COLUMNS);
-					for (i = 0; i <= COLUMNS; i++) {
-						memset(&ch->line[i], 0, sizeof(vbi_char));
-					}
-				}
+				if (ch->mode == MODE_ROLL_UP)
+                {
+                    memmove(acp, acp + COLUMNS, sizeof(*acp) * (ch->roll - 1) * COLUMNS);
+
+                    for (i = 0; i <= COLUMNS; i++)
+                        ch->line[i] = cc->transp_space[chan >> 2];
+                }
 
 				if (ch->mode != MODE_POP_ON) {
 					ch->update = 1;
@@ -1235,9 +1217,8 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 			if (!ch->mode)
 				return;
 
-			for (i = ch->col; i <= COLUMNS - 1; i++) {
-				memset(&ch->line[i], 0, sizeof(vbi_char));
-			}
+			for (i = ch->col; i <= COLUMNS - 1; i++)
+				ch->line[i] = cc->transp_space[chan >> 2];
 
 			word_break(cc, ch, 0);
 
@@ -1246,7 +1227,6 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 				render(ch->pg + (ch->hidden ^ 1), ch->row);
 			}
 
-			ch->update = 1;
 			return;
 
 		case 12:	/* Erase Displayed Memory	001 c10f  010 1100 */
@@ -1273,16 +1253,12 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 				clear(ch->pg + (ch->hidden ^ 1));
 			}
 
-			ch->update = 1;
 			return;
 		case 14:	/* Erase Non-Displayed Memory	001 c10f  010 1110 */
 // not verified
 			if (ch->mode == MODE_POP_ON)
 				erase_memory(cc, ch, ch->hidden);
 
-			erase_memory(cc, ch, ch->hidden ^ 1);
-
-			ch->update = 1;
 			return;
 		}
 
@@ -1297,18 +1273,13 @@ caption_command(vbi_decoder *vbi, struct caption *cc,
 		switch (c2) {
 		case 0x21 ... 0x23:	/* Misc Control Codes, Tabs	001 c111  010 00xx */
 // not verified
-			/*
 			col = ch->col;
 
 			for (i = c2 & 3; i > 0 && col < COLUMNS - 1; i--)
 				ch->line[col++] = cc->transp_space[chan >> 2];
 
 			if (col > ch->col)
-				ch->col = ch->col1 = col;*/
-
-			ch->col += (c2 & 3);
-			if (ch->col >= COLUMNS)
-				ch->col = COLUMNS - 1;
+				ch->col = ch->col1 = col;
 
 			return;
 
@@ -1420,15 +1391,15 @@ vbi_decode_caption(vbi_decoder *vbi, int line, uint8_t *buf)
 		vbi_char c;
 
 	case 0x01 ... 0x0F:
-		/*if (!field2)*/
+		if (!field2)
 			cc->last[0] = 0;
 		break; /* XDS field 1?? */
 
 	case 0x10 ... 0x1F:
 		//if ( (buf[1]) >= 0) {  // vbi_unpar8 (buf[1])
 		if ( vbi_unpar8 (buf[1]) >= 0) {
-			if (/*!field2
-			    &&*/ buf[0] == cc->last[0]
+			if (!field2
+			    && buf[0] == cc->last[0]
 			    && buf[1] == cc->last[1]) {
 				/* cmd repetition F1: already executed */
 				cc->last[0] = 0; /* one rep */
@@ -1437,11 +1408,11 @@ vbi_decode_caption(vbi_decoder *vbi, int line, uint8_t *buf)
 
 			caption_command(vbi, cc, c1, buf[1] & 0x7F, field2);
 
-			/*if (!field2)*/ {
+			if (!field2) {
 				cc->last[0] = buf[0];
 				cc->last[1] = buf[1];
 			}
-		} else /*if (!field2)*/
+		} else if (!field2)
 			cc->last[0] = 0;
 
 		break;
@@ -1469,7 +1440,7 @@ vbi_decode_caption(vbi_decoder *vbi, int line, uint8_t *buf)
 			break;
 		}
 
-		/*if (!field2)*/
+		if (!field2)
 			cc->last[0] = 0;
 
 		ch->nul_ct = 0;
--
cgit