* EIA-608 Revision A: Closed Captioning [CC] (libzvbi)
*/
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
#include <assert.h>
#include <stdint.h>
#include <libzvbi.h>
#define TELX_LONGTEXT N_( "Output teletext subtitles as text " \
"instead of as RGBA" )
-static int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
-static const char *ppsz_pos_descriptions[] =
+// #define ZVBI_DEBUG
+
+static const int pi_pos_values[] = { 0, 1, 2, 4, 8, 5, 6, 9, 10 };
+static const char *const ppsz_pos_descriptions[] =
{ N_("Center"), N_("Left"), N_("Right"), N_("Top"), N_("Bottom"),
N_("Top-Left"), N_("Top-Right"), N_("Bottom-Left"), N_("Bottom-Right") };
vlc_module_begin();
- set_description( _("VBI and Teletext decoder") );
- set_shortname( "VBI & Teletext" );
+ set_description( N_("VBI and Teletext decoder") );
+ set_shortname( N_("VBI & Teletext") );
set_capability( "decoder", 51 );
set_category( CAT_INPUT );
set_subcategory( SUBCAT_INPUT_SCODEC );
set_callbacks( Open, Close );
add_integer( "vbi-page", 100, NULL,
- PAGE_TEXT, PAGE_LONGTEXT, VLC_FALSE );
- add_bool( "vbi-opaque", VLC_TRUE, NULL,
- OPAQUE_TEXT, OPAQUE_LONGTEXT, VLC_FALSE );
- add_integer( "vbi-position", 4, NULL, POS_TEXT, POS_LONGTEXT, VLC_FALSE );
+ PAGE_TEXT, PAGE_LONGTEXT, false );
+ add_bool( "vbi-opaque", true, NULL,
+ OPAQUE_TEXT, OPAQUE_LONGTEXT, false );
+ add_integer( "vbi-position", 4, NULL, POS_TEXT, POS_LONGTEXT, false );
change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
- add_bool( "vbi-text", VLC_FALSE, NULL,
- TELX_TEXT, TELX_LONGTEXT, VLC_FALSE );
+ add_bool( "vbi-text", false, NULL,
+ TELX_TEXT, TELX_LONGTEXT, false );
vlc_module_end();
/****************************************************************************
struct decoder_sys_t
{
- vbi_decoder * p_vbi_dec;
- vbi_dvb_demux * p_dvb_demux;
- unsigned int i_wanted_page;
- unsigned int i_last_page;
- vlc_bool_t b_update;
- vlc_bool_t b_opaque;
+ vbi_decoder * p_vbi_dec;
+ vbi_dvb_demux * p_dvb_demux;
+ unsigned int i_wanted_page;
+ unsigned int i_last_page;
+ bool b_update;
+ bool b_opaque;
/* Subtitles as text */
- vlc_bool_t b_text;
+ bool b_text;
/* Positioning of Teletext images */
- int i_align;
+ int i_align;
/* Misc */
-#ifdef HAVE_FFMPEG_SWSCALE_H
- image_handler_t *p_image;
+#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H) || defined(HAVE_LIBSWSCALE_TREE)
+ image_handler_t *p_image;
#endif
};
vlc_value_t oldval, vlc_value_t newval, void *p_data );
static int OpaquePage( decoder_t *p_dec, vbi_page p_page, video_format_t fmt,
picture_t **p_src );
+static int Opaque_32bpp( decoder_t *p_dec, vbi_page p_page, video_format_t fmt,
+ picture_t **p_src );
+static int Opaque_8bpp( decoder_t *p_dec, vbi_page p_page, video_format_t fmt,
+ picture_t **p_src );
static int Opaque( vlc_object_t *p_this, char const *psz_cmd,
vlc_value_t oldval, vlc_value_t newval, void *p_data );
decoder_sys_t *p_sys = NULL;
if( p_dec->fmt_in.i_codec != VLC_FOURCC('t','e','l','x') )
- {
return VLC_EGENERIC;
- }
p_dec->pf_decode_sub = Decode;
p_sys = p_dec->p_sys = malloc( sizeof(decoder_sys_t) );
if( p_sys == NULL )
- {
- msg_Err( p_dec, "out of memory" );
return VLC_ENOMEM;
- }
memset( p_sys, 0, sizeof(decoder_sys_t) );
-#ifdef HAVE_FFMPEG_SWSCALE_H
+#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H) || defined(HAVE_LIBSWSCALE_TREE)
p_sys->p_image = image_HandlerCreate( VLC_OBJECT(p_dec) );
if( !p_sys->p_image )
{
free( p_sys );
- msg_Err( p_dec, "out of memory" );
return VLC_ENOMEM;
}
#endif
+ p_sys->b_update = false;
p_sys->p_vbi_dec = vbi_decoder_new();
p_sys->p_dvb_demux = vbi_dvb_pes_demux_new( NULL, NULL );
event_handler, p_dec );
/* Create the var on vlc_global. */
- p_sys->i_wanted_page = var_CreateGetInteger( p_dec->p_libvlc, "vbi-page" );
- var_AddCallback( p_dec->p_libvlc, "vbi-page",
+ p_sys->i_wanted_page = var_CreateGetInteger( p_dec, "vbi-page" );
+ var_AddCallback( p_dec, "vbi-page",
RequestPage, p_sys );
p_sys->b_opaque = var_CreateGetBool( p_dec, "vbi-opaque" );
if( p_sys->b_text )
p_dec->fmt_out.video.i_chroma = VLC_FOURCC('T','E','X','T');
else
-#ifdef HAVE_FFMPEG_SWSCALE_H
+#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H) || defined(HAVE_LIBSWSCALE_TREE)
p_dec->fmt_out.video.i_chroma = VLC_FOURCC('Y','U','V','A');
#else
p_dec->fmt_out.video.i_chroma = VLC_FOURCC('R','G','B','A');
decoder_t *p_dec = (decoder_t*) p_this;
decoder_sys_t *p_sys = p_dec->p_sys;
-#ifdef HAVE_FFMPEG_SWSCALE_H
+ var_Destroy( p_dec, "vbi-opaque" );
+ var_Destroy( p_dec, "vbi-page" );
+ var_DelCallback( p_dec, "vbi-page", RequestPage, p_sys );
+ var_DelCallback( p_dec, "vbi-opaque", Opaque, p_sys );
+
+#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H) || defined(HAVE_LIBSWSCALE_TREE)
if( p_sys->p_image ) image_HandlerDelete( p_sys->p_image );
#endif
if( p_sys->p_vbi_dec ) vbi_decoder_delete( p_sys->p_vbi_dec );
block_t *p_block;
subpicture_t *p_spu = NULL;
video_format_t fmt;
- vlc_bool_t b_cached = VLC_FALSE;
+ bool b_cached = false;
vbi_page p_page;
const uint8_t *p_pos;
unsigned int i_left;
if( (pp_block == NULL) || (*pp_block == NULL) )
return NULL;
+
p_block = *pp_block;
*pp_block = NULL;
goto error;
if( ( p_sys->i_wanted_page == p_sys->i_last_page ) &&
- ( p_sys->b_update != VLC_TRUE ) )
+ ( p_sys->b_update != true ) )
goto error;
+ p_sys->b_update = false;
p_sys->i_last_page = p_sys->i_wanted_page;
- p_sys->b_update = VLC_FALSE;
-#if 0
+#ifdef ZVBI_DEBUG
msg_Dbg( p_dec, "we now have page: %d ready for display",
- p_sys->i_wanted_page );
+ p_sys->i_wanted_page );
#endif
/* If there is a page or sub to render, then we do that here */
/* Create the subpicture unit */
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = p_sys->b_text ? VLC_FOURCC('T','E','X','T') :
-#ifdef HAVE_FFMPEG_SWSCALE_H
+#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H) || defined(HAVE_LIBSWSCALE_TREE)
VLC_FOURCC('Y','U','V','A');
#else
VLC_FOURCC('R','G','B','A');
#endif
fmt.i_aspect = p_sys->b_text ? 0 : VOUT_ASPECT_FACTOR;
- fmt.i_sar_num = fmt.i_sar_den = 1;
- fmt.i_width = fmt.i_visible_width = p_page.columns * 12;
- fmt.i_height = fmt.i_visible_height = p_page.rows * 10;
+ if( !p_sys->b_text )
+ {
+ fmt.i_sar_num = fmt.i_sar_den = 1;
+ fmt.i_width = fmt.i_visible_width = p_page.columns * 12;
+ fmt.i_height = fmt.i_visible_height = p_page.rows * 10;
+ }
fmt.i_bits_per_pixel = p_sys->b_text ? 0 : 32;
fmt.i_x_offset = fmt.i_y_offset = 0;
p_spu->p_region->i_x = 0;
p_spu->p_region->i_y = 0;
- p_spu->p_region->i_align = SUBPICTURE_ALIGN_TOP;
+ p_spu->p_region->i_align = p_sys->i_align;
/* Normal text subs, easy markup */
- p_spu->i_flags = SUBPICTURE_ALIGN_TOP;
+ p_spu->i_flags = SUBPICTURE_ALIGN_BOTTOM;
p_spu->i_start = (mtime_t) p_block->i_pts;
p_spu->i_stop = (mtime_t) 0;
- p_spu->b_ephemer = VLC_TRUE;
- p_spu->b_absolute = VLC_FALSE;
- p_spu->b_pausable = VLC_TRUE;
- p_spu->i_width = fmt.i_width;
- p_spu->i_height = fmt.i_height;
- p_spu->i_original_picture_width = p_page.columns * 12;
- p_spu->i_original_picture_height = p_page.rows * 10;
+ p_spu->b_ephemer = true;
+ p_spu->b_absolute = false;
+ p_spu->b_pausable = true;
+ if( !p_sys->b_text )
+ {
+ p_spu->i_width = fmt.i_width;
+ p_spu->i_height = fmt.i_height;
+ p_spu->i_original_picture_width = p_page.columns * 12;
+ p_spu->i_original_picture_height = p_page.rows * 10;
+ }
#ifdef WORDS_BIGENDIAN
# define ZVBI_PIXFMT_RGBA32 VBI_PIXFMT_RGBA32_BE
if( i_total <= 40 ) goto error;
p_spu->p_region->psz_text = strdup( &p_text[8] );
- p_spu->p_region->fmt.i_height = p_spu->p_region->fmt.i_visible_height = p_page.rows + 1;
- msg_Dbg( p_dec, "page %x-%x(%d)\n%s", p_page.pgno, p_page.subno, i_total, p_text );
+#ifdef ZVBI_DEBUG
+ msg_Info( p_dec, "page %x-%x(%d)\n%s", p_page.pgno, p_page.subno, i_total, p_text );
+#endif
}
else
{
-#ifdef HAVE_FFMPEG_SWSCALE_H
+#if defined(HAVE_FFMPEG_SWSCALE_H) || defined(HAVE_LIBSWSCALE_SWSCALE_H) || defined(HAVE_LIBSWSCALE_TREE)
video_format_t fmt_in;
picture_t *p_pic, *p_dest;
p_pic = ( picture_t * ) malloc( sizeof( picture_t ) );
if( !p_pic )
- {
- msg_Err( p_dec, "out of memory" );
goto error;
- }
memset( &fmt_in, 0, sizeof( video_format_t ) );
memset( p_pic, 0, sizeof( picture_t ) );
- fmt_in = p_spu->p_region->fmt;
+ fmt_in = fmt;
fmt_in.i_chroma = VLC_FOURCC('R','G','B','A');
vout_AllocatePicture( VLC_OBJECT(p_dec), p_pic, fmt_in.i_chroma,
fmt_in.i_width, fmt_in.i_height, fmt_in.i_aspect );
-
if( !p_pic->i_planes )
{
free( p_pic->p_data_orig );
p_pic->p->i_lines = p_page.rows * 10;
p_pic->p->i_pitch = p_page.columns * 12 * 4;
- OpaquePage( p_dec, p_page, fmt_in, &p_pic );
-
-#if 0
+#ifdef ZVBI_DEBUG
msg_Dbg( p_dec, "page %x-%x(%d,%d)",
p_page.pgno, p_page.subno,
p_page.rows, p_page.columns );
msg_Err( p_dec, "chroma conversion failed" );
goto error;
}
-
- vout_CopyPicture( VLC_OBJECT(p_dec), &p_spu->p_region->picture,
+ OpaquePage( p_dec, p_page, p_spu->p_region->fmt, &p_dest );
+ vout_CopyPicture( VLC_OBJECT(p_dec), &(p_spu->p_region->picture),
p_dest );
free( p_pic->p_data_orig );
#endif
}
-#undef PIXFMT_RGBA32
+#undef ZVBI_PIXFMT_RGBA32
vbi_unref_page( &p_page );
block_Release( p_block );
if( ev->type == VBI_EVENT_TTX_PAGE )
{
- /* msg_Dbg( p_dec, "Page %03x.%02x ",
+#ifdef ZVBI_DEBUG
+ msg_Info( p_dec, "Page %03x.%02x ",
ev->ev.ttx_page.pgno,
ev->ev.ttx_page.subno & 0xFF);
- */
+#endif
if( p_sys->i_last_page == vbi_bcd2dec( ev->ev.ttx_page.pgno ) )
- p_sys->b_update = VLC_TRUE;
+ p_sys->b_update = true;
if( ev->ev.ttx_page.clock_update )
msg_Dbg( p_dec, "clock" );
+#ifdef ZVBI_DEBUG
if( ev->ev.ttx_page.header_update )
msg_Dbg( p_dec, "header" );
+#endif
}
else if( ev->type == VBI_EVENT_CAPTION )
msg_Dbg( p_dec, "Caption line: %x", ev->ev.caption.pgno );
static int OpaquePage( decoder_t *p_dec, vbi_page p_page,
video_format_t fmt, picture_t **p_src )
{
- decoder_sys_t *p_sys = (decoder_sys_t *) p_dec->p_sys;
- uint32_t *p_begin, *p_end;
- unsigned int x = 0, y = 0;
- vbi_opacity opacity;
+ int result = VLC_EGENERIC;
/* Kludge since zvbi doesn't provide an option to specify opacity. */
- if( ( fmt.i_chroma != VLC_FOURCC('R','G','B','A' ) ) &&
- ( fmt.i_chroma != VLC_FOURCC('Y','U','V','A' ) ) )
+ switch( fmt.i_chroma )
{
- msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
- return VLC_EGENERIC;
+ case VLC_FOURCC('R','G','B','A' ):
+ result = Opaque_32bpp( p_dec, p_page, fmt, p_src );
+ break;
+ case VLC_FOURCC('Y','U','V','A' ):
+ result = Opaque_8bpp( p_dec, p_page, fmt, p_src );
+ break;
+ default:
+ msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
+ return VLC_EGENERIC;
}
+ return result;
+}
+static int Opaque_32bpp( decoder_t *p_dec, vbi_page p_page,
+ video_format_t fmt, picture_t **p_src )
+{
+ decoder_sys_t *p_sys = (decoder_sys_t *) p_dec->p_sys;
+ uint32_t *p_begin, *p_end;
+ unsigned int x = 0, y = 0;
+ vbi_opacity opacity;
+
+ /* Kludge since zvbi doesn't provide an option to specify opacity. */
switch( fmt.i_chroma )
{
case VLC_FOURCC('R','G','B','A' ):
p_begin = (uint32_t *)(*p_src)->p->p_pixels;
- p_end = (uint32_t *)(*p_src)->p->p_pixels+(fmt.i_width * fmt.i_height);
- break;
- case VLC_FOURCC('Y','U','V','A' ):
- p_begin = (uint32_t *)(*p_src)->p[A_PLANE].p_pixels;
- p_end = (uint32_t *)(*p_src)->p[A_PLANE].p_pixels +
- ( (*p_src)->p[A_PLANE].i_lines * (*p_src)->p[A_PLANE].i_pitch );
+ p_end = (uint32_t *)(*p_src)->p->p_pixels +
+ ( fmt.i_width * fmt.i_height );
break;
default:
msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
*p_begin = 0;
break;
/* To make the boxed text "closed captioning" transparent
- * change VLC_TRUE to VLC_FALSE.
+ * change true to false.
*/
case VBI_OPAQUE:
if( p_sys->b_opaque )
break;
/* Full text transparency. only foreground color is show */
case VBI_TRANSPARENT_FULL:
+ *p_begin = 0;
+ break;
/* Transparency for boxed text */
case VBI_SEMI_TRANSPARENT:
- if( (*p_begin & 0xffffff00) == 0xff )
+ if( (*p_begin & 0xffffff00) == 0xff )
*p_begin = 0;
break;
+ }
+ x++;
+ if( x >= fmt.i_width )
+ {
+ x = 0;
+ y++;
+ }
+ }
+ /* end of kludge */
+ return VLC_SUCCESS;
+}
+
+static int Opaque_8bpp( decoder_t *p_dec, vbi_page p_page,
+ video_format_t fmt, picture_t **p_src )
+{
+ decoder_sys_t *p_sys = (decoder_sys_t *) p_dec->p_sys;
+ uint8_t *p_begin, *p_end;
+ uint32_t i_width = 0;
+ unsigned int x = 0, y = 0;
+ vbi_opacity opacity;
+
+ /* Kludge since zvbi doesn't provide an option to specify opacity. */
+ switch( fmt.i_chroma )
+ {
+ case VLC_FOURCC('Y','U','V','A' ):
+ p_begin = (uint8_t *)(*p_src)->p[A_PLANE].p_pixels;
+ p_end = (uint8_t *)(*p_src)->p[A_PLANE].p_pixels +
+ ( fmt.i_height * (*p_src)->p[A_PLANE].i_pitch );
+ i_width = (*p_src)->p[A_PLANE].i_pitch;
+ break;
default:
+ msg_Err( p_dec, "chroma not supported %4.4s", (char *)&fmt.i_chroma );
+ return VLC_EGENERIC;
+ }
+
+ for( ; p_begin < p_end; p_begin++ )
+ {
+ opacity = p_page.text[ y / 10 * p_page.columns + x / 12 ].opacity;
+ switch( opacity )
+ {
+ /* Show video instead of this character */
+ case VBI_TRANSPARENT_SPACE:
+ *p_begin = 0;
+ break;
+ /* To make the boxed text "closed captioning" transparent
+ * change true to false.
+ */
+ case VBI_OPAQUE:
+ if( p_sys->b_opaque )
+ break;
+ /* Full text transparency. only foreground color is show */
+ case VBI_TRANSPARENT_FULL:
+ *p_begin = 0;
+ break;
+ /* Transparency for boxed text */
+ case VBI_SEMI_TRANSPARENT:
+ if( (*p_begin & 0xffffff00) == 0xff )
+ *p_begin = 0;
break;
}
x++;
- if( x >= fmt.i_width )
+ if( x >= i_width )
{
x = 0;
y++;
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
decoder_sys_t *p_sys = p_data;
+ VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
if( (newval.i_int > 0) && (newval.i_int < 999) )
p_sys->i_wanted_page = newval.i_int;
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
decoder_sys_t *p_sys = p_data;
+ VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
if( p_sys )
p_sys->b_opaque = newval.b_bool;
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
decoder_sys_t *p_sys = p_data;
+ VLC_UNUSED(p_this); VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
if( p_sys )
p_sys->i_align = newval.i_int;
projects / vlc / blobdiff