[vlc-devel] [PATCH] cc.c : Added basic features of CIA-708 to cc.c
greeshma
greeshmabalabadra at gmail.com
Tue Mar 24 11:14:45 CET 2015
>From 6260d6377da95f0dcc0e92e6342c4f9c540cc145 Mon Sep 17 00:00:00 2001
From: greeshmab <greeshmabalabadra at gmail.com>
Date: Tue, 24 Mar 2015 10:27:46 +0530
Subject: [PATCH] Added basic features of CIA-708 from wiki page
Signed-off-by: greeshma <greeshmabalabadra at gmail.com>
---
modules/codec/cc.c | 250
+++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 250 insertions(+)
diff --git a/modules/codec/cc.c b/modules/codec/cc.c
index 91e35ee..89754f6 100644
--- a/modules/codec/cc.c
+++ b/modules/codec/cc.c
@@ -1132,3 +1132,253 @@ static char *Eia608Text( eia608_t *h, bool b_html )
Eia608Strlcat( psz, "</text>", i_size );
return psz;
}
+
+
+//Based on the Eia708 Wikipedia page
+//For SetPenAttributes function, Code is based on CCExtractor code
+
+enum eia708_Caption_Commands{
+ ETX = 0x03, //EndOfText
+ CW0 = 0x80, //SetCurrentWindow0–7
+ CW1 = 0x81,
+ CW2 = 0x82,
+ CW3 = 0x83,
+ CW4 = 0x84,
+ CW5 = 0x85,
+ CW6 = 0x86,
+ CW7 = 0x87,
+ CLW = 0x88, //ClearWindows
+ DSW = 0x89, //DisplayWindows
+ HDW = 0x8A, //HideWindows
+ TGW = 0x8B, //ToggleWindows
+ DLW = 0x8C, //DeleteWindows
+ DLY = 0x8D, //Delay
+ DLC = 0x8E, //DelayCancel
+ RST = 0x8F, //Reset
+ SPA = 0x90, //SetPenAttributes
+ SPC = 0x91, //SetPenColor
+ SPL = 0x92, //SetPenLocation
+ SWA = 0x97,
+ DF0 = 0x98, //DefineWindow0–7
+ DF1 = 0x99,
+ DF2=0x9A,
+ DF3=0x9B,
+ DF4=0x9C,
+ DF5=0x9D,
+ DF6=0x9E,
+ DF7=0x9F // priority, anchor number, anchor vertical, anchor
horizontal, row count, column count, locked, visible, centered, style ID
+};
+
+/*The SetPenAttributes command specifies how certain attributes of
subsequent
+characters are to be rendered in the current window, until the next
SetPenAttributes command
+*/
+
+enum eia708_PenAttribs_Size{
+ penSize_Small = 0,
+ penSize_Standard = 1,
+ penSize_Large = 2,
+ penSize_IllegalVal = 3
+};
+
+enum eia708_PenAttribs_Offset{
+ PenOffset_Subscript = 0,
+ PenOffset_Normal = 1,
+ PenOffset_Superscript = 2,
+ PenOffset_IllegalVal = 3
+};
+
+enum eia708_PenAttribs_TextTag{
+ PenTextTag_Dialog=0,
+ PenTextTag_Source_or_speaker_id=1,
+ PenTextTag_Electronically_reproduced_voice=2,
+ PenTextTag_Dialog_in_other_language=3,
+ PenTextTag_Voiceover=4,
+ PenTextTag_Audible_translation=5,
+ PenTextTag_Subtitle_translation=6,
+ PenTextTag_Voice_quality_description=7,
+ PenTextTag_Song_lyrics=8,
+ PenTextTag_Sound_effect_description=9,
+ PenTextTag_Musical_score_description=10,
+ PenTextTag_Oath=11,
+ PenTextTag_Undefined_0=12,
+ PenTextTag_Undefined_1=13,
+ PenTextTag_Undefined_2=14,
+ PenTextTag_Invisible=15
+};
+
+enum eia708_PenAttribs_FontTag{
+ PenFontTag_Default=0,
+ PenFontTag_Monospaced_serif=1,
+ PenFontTag_Proportional_serif=2,
+ PenFontTag_Monospaced_sanserif=3,
+ PenFontTag_Proportional_sanserif=4,
+ PenFontTag_Casual=5,
+ PenFontTag_Cursive=6,
+ PenFontTag_Smallcaps=7
+};
+
+enum eia708_PenAttribs_EdgeType{
+ PenEdgeType_None=0,
+ PenEdgeType_Raised=1,
+ PenEdgeType_Depressed=2,
+ PenEdgeType_Uniform=3,
+ PenEdgeType_Left_drop_shadow=4,
+ PenEdgeType_Right_drop_shadow=5,
+ PenEdgeType_Illegal_val0=6,
+ PenEdgeType_Illegal_val1=7
+};
+
+enum eia708_PenAttribs_Underline{
+ PenUnderLine_No = 0,
+ PenUnderline_Yes = 1
+};
+
+enum eia708_PenAttribs_Italic{
+ PenItalic_No = 0,
+ PenItalic_Yes = 1
+};
+
+enum eia708_PenColor_Opacity{
+ PenOpacity_SOLID=0,
+ PenOpacity_FLASH=1,
+ PenOpacity_TRANSLUCENT=2,
+ PenOpacity_TRANSPARENT=3
+};
+
+typedef struct eia708_PenColor
+{
+ int fg_color;
+ int fg_opacity;
+ int bg_color;
+ int bg_opacity;
+ int edge_color;
+} eia708_PenColor;
+
+typedef struct eia708_PenAttribs
+{
+ int PenSize;
+ int Offset;
+ int TextTag;
+ int FontTag;
+ int EdgeType;
+ int UnderLine;
+ int Italic;
+} eia708_PenAttribs;
+
+enum eia708_WindowAttribs_Justify{
+ WindowJustify_LEFT=0,
+ WindowJustify_RIGHT=1,
+ WindowJustify_CENTER=2,
+ WindowJustify_FULL=3
+};
+
+enum eia708_WindowAttribs_AnchorID{
+ WindowAnchorID_UPPER_LEFT=0,
+ WindowAnchorID_UPPER_CENTER=1,
+ WindowAnchorID_UPPER_RIGHT=2,
+ WindowAnchorID_MIDDLE_LEFT=3,
+ WindowAnchorID_MIDDLE_CENTER=4,
+ WindowAnchorID_MIDDLE_RIGHT=5,
+ WindowAnchorID_LOWER_LEFT=6,
+ WindowAnchorID_LOWER_CENTER=7,
+ WindowAnchorID_LOWER_RIGHT=8
+};
+
+typedef struct eia708_WindowAttribs
+{
+ int fill_color;
+ int fill_opacity;
+ int border_color;
+ int border_type01;
+ int justify;
+ int scroll_dir;
+ int print_dir;
+ int word_wrap;
+ int border_type;
+ int display_eff;
+ int effect_dir;
+ int effect_speed;
+} eia708_WindowAttribs;
+
+
+typedef struct eia708_window
+{
+ int is_defined;
+ int number; // Handy, in case we only have a pointer to the window
+ int priority;
+ int col_lock;
+ int row_lock;
+ int visible;
+ int null;
+ int anchor_vertical;
+ int relative_pos;
+ int anchor_horizontal;
+ int row_count;
+ int anchor_ID;
+ int col_count;
+ int pen_style;
+ int win_style;
+ uint8_t Window_commands[8]; // Commands used to create this window
+ eia708_WindowAttribs attribs; // SetWindowAttributes,
SetPenAttributes, SetPenColor,
+ eia708_PenAttribs pen;
+ eia708_PenColor PenColor;
+ int pen_row; //Pen Location for SetPenLocation
+ int pen_column;
+} eia708_window;
+
+//Couldn't figure out the structure of eia708 service packet/block.
+
+typedef struct{
+ eia708_window windows[10];
+ int current_window;
+}eia708_t;
+
+static void eia708_SetPenAttributes (eia708_t *service, uint8_t *data)
+{
+ //based on ccextractor code
+ if (service->current_window==-1)
+ {
+ // Handle by creating window
+ return;
+ }
+
+ service->windows[service->current_window].pen.PenSize = (data[1]) &
0x3;
+ service->windows[service->current_window].pen.Offset = (data[1]>>2)
& 0x3;
+ service->windows[service->current_window].pen.TextTag = (data[1]>>4)
& 0xf;
+ service->windows[service->current_window].pen.FontTag = (data[2]) &
0x7;
+ service->windows[service->current_window].pen.EdgeType = (data[2]>>3)
& 0x7;
+ service->windows[service->current_window].pen.UnderLine = (data[2]>>4)
& 0x1;
+ service->windows[service->current_window].pen.Italic = (data[2]>>5)
& 0x1;
+}
+
+
+static void eia708_SetPenColor (eia708_t *service, uint8_t *data)
+{
+
+ if (service->current_window==-1)
+ {
+ // Handle by creating window
+ return;
+ }
+ service->windows[service->current_window].PenColor.fg_color =
(data[1]) & 0x3f;
+ service->windows[service->current_window].PenColor.fg_opacity =
(data[1]>>6) & 0x03;
+ service->windows[service->current_window].PenColor.bg_color =
(data[2] ) & 0x3f;
+ service->windows[service->current_window].PenColor.bg_opacity =
(data[2]>>6) & 0x03;
+ service->windows[service->current_window].PenColor.edge_color =
(data[3]>>6) & 0x3f;
+}
+
+static void eia708_SetPenLocation (eia708_t *service, uint8_t *data)
+{
+ if (service->current_window==-1)
+ {
+ // Handle by creating window
+ return;
+ }
+ service->windows[service->current_window].pen_row = data[1] & 0x0f;
+ service->windows[service->current_window].pen_column = data[2] & 0x3f;
+}
--
2.1.4
Greeshma
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.videolan.org/pipermail/vlc-devel/attachments/20150324/3ad01008/attachment.html>
More information about the vlc-devel
mailing list