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-rw-r--r--gst/vbidec/vbiscreen.c730
1 files changed, 730 insertions, 0 deletions
diff --git a/gst/vbidec/vbiscreen.c b/gst/vbidec/vbiscreen.c
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+++ b/gst/vbidec/vbiscreen.c
@@ -0,0 +1,730 @@
+/**
+ * Copyright (c) 2002 Billy Biggs <vektor@dumbterm.net>.
+ * Copyright (c) 2002 Doug Bell <drbell@users.sourceforge.net>.
+ *
+ * Modified and adapted to GStreamer by
+ * David I. Lehn <dlehn@users.sourceforge.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+/*#include "osdtools.h"*/
+/*#include "speedy.h"*/
+#include "vbiscreen.h"
+#include "gstvbidec.h"
+
+#define ROLL_2 6
+#define ROLL_3 7
+#define ROLL_4 8
+#define POP_UP 9
+#define PAINT_ON 10
+
+
+#define NUM_LINES 15
+#define ROWS 15
+#define COLS 32
+#define FONT_SIZE 20
+
+typedef struct osd_string_s osd_string_t;
+struct osd_string_s {
+ int width;
+ int height;
+ int r, g, b;
+ int visible;
+ GstVBIDec *vbidec;
+};
+
+osd_string_t *osd_string_new(char *c, int s, int w, int h, int a, void *user_data) {
+ osd_string_t *os;
+ os = (osd_string_t *)malloc(sizeof(osd_string_t));
+ if (!os)
+ return NULL;
+ os->width = 0;
+ os->height = 0;
+ os->r = os->g = os->b = 0;
+ os->visible = 1;
+ os->vbidec = (GstVBIDec *)user_data;
+ return os;
+}
+void osd_string_show_text(osd_string_t *os, char *s, int len ) {
+ /* FIXME: just print data when it gets here */
+ if (len > 0) {
+ gst_vbidec_show_text(os->vbidec, s, len);
+ }
+}
+int osd_string_get_height(osd_string_t *os) {
+ return os->height;
+}
+int osd_string_get_width(osd_string_t *os) {
+ return os->width;
+}
+void osd_string_delete(osd_string_t *os) {
+ free(os);
+}
+void osd_string_set_colour_rgb(osd_string_t *os, int r, int g, int b) {
+ os->r = r;
+ os->g = g;
+ os->b = b;
+}
+void blit_colour_packed422_scanline( unsigned char *d, int w, int luma, int cb, int cr) {
+}
+int osd_string_visible(osd_string_t *os) {
+ return os->visible;
+}
+void osd_string_composite_packed422_scanline(osd_string_t *os, unsigned char *a, unsigned char *b, int w, int x, int y) {
+}
+
+struct vbiscreen_s {
+
+ osd_string_t *line[ ROWS ];
+
+ char buffers[ ROWS * COLS * 2 ];
+ char text[ 2 * ROWS * COLS ];
+ char hiddenbuf[ COLS ];
+ char paintbuf[ ROWS * COLS ];
+
+ unsigned int fgcolour;
+ unsigned int bgcolour;
+ int bg_luma, bg_cb, bg_cr;
+
+ int frame_width;
+ int frame_height;
+ int frame_aspect;
+
+ int x, y; /* where to draw console */
+ int width, height; /* the size box we have to draw in */
+ int rowheight, charwidth;
+
+ int curx, cury; /* cursor position */
+ int rows, cols; /* 32 cols 15 rows */
+ int captions, style; /* CC (1) or Text (0), RU2 RU3 RU4 POP_UP PAINT_ON */
+ int first_line; /* where to start drawing */
+ int curbuffer;
+ int top_of_screen; /* a pointer into line[] */
+ int indent;
+ int got_eoc;
+ int scroll;
+
+ char *fontfile;
+ int fontsize;
+ int verbose;
+
+ void *user_data;
+};
+
+vbiscreen_t *vbiscreen_new( int video_width, int video_height,
+ double video_aspect, int verbose, void *user_data )
+{
+ int i=0, fontsize = FONT_SIZE;
+ vbiscreen_t *vs = (vbiscreen_t *)malloc(sizeof(struct vbiscreen_s));
+
+ if( !vs ) {
+ return NULL;
+ }
+
+ vs->verbose = verbose;
+ vs->x = 0;
+ vs->y = 0;
+ vs->frame_width = video_width;
+ vs->frame_height = video_height;
+ vs->frame_aspect = video_aspect;
+ vs->curx = 0;
+ vs->cury = 0;
+ vs->fgcolour = 0xFFFFFFFFU; /* white */
+ vs->bgcolour = 0xFF000000U; /* black */
+ vs->bg_luma = 16;
+ vs->bg_cb = 128;
+ vs->bg_cr = 128;
+ vs->rows = ROWS;
+ vs->cols = COLS;
+ /*vs->fontfile = DATADIR "/FreeMonoBold.ttf";*/
+ vs->fontfile = NULL;
+ vs->fontsize = fontsize;
+ vs->width = video_width;
+ vs->height = video_height;
+ vs->first_line = 0;
+ vs->captions = 0;
+ vs->style = 0;
+ vs->curbuffer = 0;
+ vs->top_of_screen = 0;
+ vs->indent = 0;
+ memset( vs->buffers, 0, 2 * COLS * ROWS );
+ memset( vs->hiddenbuf, 0, COLS );
+ memset( vs->paintbuf, 0, ROWS * COLS );
+ vs->scroll = 0;
+
+ vs->user_data = user_data;
+
+ vs->line[0] = osd_string_new( vs->fontfile, fontsize, video_width,
+ video_height,
+ video_aspect,
+ user_data);
+
+ if( !vs->line[0] ) {
+ vs->fontfile = "./FreeMonoBold.ttf";
+
+ vs->line[0] = osd_string_new( vs->fontfile, fontsize,
+ video_width,
+ video_height,
+ video_aspect,
+ user_data);
+ }
+
+ if( !vs->line[0] ) {
+ fprintf( stderr, "vbiscreen: Could not find my font (%s)!\n",
+ vs->fontfile );
+ vbiscreen_delete( vs );
+ return NULL;
+ }
+
+ osd_string_show_text( vs->line[ 0 ], "W", 0 );
+ vs->rowheight = osd_string_get_height( vs->line[ 0 ] );
+ vs->charwidth = osd_string_get_width( vs->line[ 0 ] );
+ osd_string_delete( vs->line[ 0 ] );
+
+ for( i = 0; i < ROWS; i++ ) {
+ vs->line[ i ] = osd_string_new( vs->fontfile, fontsize,
+ video_width, video_height,
+ video_aspect,
+ user_data);
+ if( !vs->line[ i ] ) {
+ fprintf( stderr, "vbiscreen: Could not allocate a line.\n" );
+ vbiscreen_delete( vs );
+ return NULL;
+ }
+ osd_string_set_colour_rgb( vs->line[ i ],
+ (vs->fgcolour & 0xff0000) >> 16,
+ (vs->fgcolour & 0xff00) >> 8,
+ (vs->fgcolour & 0xff) );
+ osd_string_show_text( vs->line[ i ], " ", 0 );
+ }
+ memset( vs->text, 0, 2 * ROWS * COLS );
+ return vs;
+}
+
+void blank_screen( vbiscreen_t *vs )
+{
+ int i;
+
+ if( vs->verbose ) fprintf( stderr, "in blank\n");
+ for( i = 0; i < ROWS; i++ ) {
+ osd_string_show_text( vs->line[ i ], " ", 0 );
+ }
+}
+
+void clear_screen( vbiscreen_t *vs )
+{
+ int base, i;
+ if( !vs ) return;
+
+ base = vs->top_of_screen * COLS;
+ for( i = 0; i < ROWS * COLS; i++ ) {
+ vs->text[ base ] = 0;
+ base++;
+ base %= 2 * ROWS * COLS;
+ }
+ blank_screen( vs );
+}
+
+void clear_hidden_roll( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ memset( vs->hiddenbuf, 0, COLS );
+}
+
+void clear_hidden_pop( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ memset( vs->buffers + vs->curbuffer * COLS * ROWS , 0, COLS * ROWS );
+}
+
+void clear_hidden_paint( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ memset( vs->paintbuf , 0, COLS * ROWS );
+}
+
+void clear_displayed_pop( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ memset( vs->buffers + ( vs->curbuffer ^ 1 ) * COLS * ROWS , 0, COLS * ROWS );
+}
+
+void vbiscreen_dump_screen_text( vbiscreen_t *vs )
+{
+ int i, offset;
+
+ if( !vs ) return;
+ offset = vs->top_of_screen * COLS;
+
+ fprintf( stderr, "\n 0123456789abcdefghij012345678901" );
+ for( i = 0; i < ROWS * COLS; i++ ) {
+ if( !(i % COLS) )
+ fprintf( stderr, "\n%.2d ", i / COLS );
+ fprintf( stderr, "%c", vs->text[ offset ] ? vs->text[ offset ] : ' ' );
+ offset++;
+ offset %= 2 * ROWS * COLS;
+ }
+ fprintf( stderr, "\n 0123456789abcdefghij012345678901\n " );
+ for( i = 0; i < COLS; i++ ) {
+ fprintf( stderr, "%c", vs->text[ offset ] ? vs->text[ offset ] : ' ' );
+ offset++;
+ offset %= 2 * ROWS * COLS;
+ }
+ fprintf( stderr, "\n 0123456789abcdefghij012345678901\n" );
+}
+
+int update_row_x( vbiscreen_t *vs, int row )
+{
+ char text[ COLS + 1 ];
+ int i, j, haschars = 0, base;
+
+ if( !vs ) return 0;
+
+ text[ COLS ] = 0;
+ base = ( ( vs->top_of_screen + row ) % ( 2 * ROWS ) ) * COLS;
+ for( j = 0, i = base; i < base + COLS; i++, j++ ) {
+ if( vs->text[ i ] ) {
+ text[ j ] = vs->text[ i ];
+ haschars = 1;
+ } else {
+ text[ j ] = ' ';
+ }
+ }
+
+ osd_string_set_colour_rgb( vs->line[ row ],
+ ( vs->fgcolour & 0xff0000 ) >> 16,
+ ( vs->fgcolour & 0xff00 ) >> 8,
+ ( vs->fgcolour & 0xff ) );
+ if( !haschars )
+ osd_string_show_text( vs->line[ row ], " ", 0 );
+ else
+ osd_string_show_text( vs->line[ row ], text, 51 );
+
+ return haschars;
+}
+
+void update_row( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+
+ update_row_x( vs, vs->cury );
+ //vbiscreen_dump_screen_text( vs );
+}
+
+void update_all_rows( vbiscreen_t *vs )
+{
+ int row = 0;
+
+ if( !vs ) return;
+
+ for( row = 0; row < ROWS; row++ ) {
+ update_row_x( vs, row );
+ }
+ //vbiscreen_dump_screen_text( vs );
+}
+
+void vbiscreen_delete( vbiscreen_t *vs )
+{
+ free( vs );
+}
+
+void copy_row_to_screen( vbiscreen_t *vs, char *row )
+{
+ int base, i, j;
+
+ base = ( ( vs->top_of_screen + vs->cury ) % ( 2 * ROWS ) ) * COLS;
+ for( j = 0, i = base;
+ i < base + COLS;
+ j++, i++ ) {
+ vs->text[ i ] = row[ j ];
+ }
+ update_row( vs );
+}
+
+void scroll_screen( vbiscreen_t *vs )
+{
+ int start_row;
+
+ if( !vs || !vs->captions || !vs->style || vs->style > ROLL_4 )
+ return;
+
+ start_row = ( vs->first_line + vs->top_of_screen ) % ( 2 * ROWS );
+ if( vs->verbose )
+ fprintf ( stderr, "start row : %d first line %d\n ", start_row,
+ vs->first_line );
+
+ /* zero out top row */
+ memset( (char *)( vs->text + start_row * COLS ), 0, COLS );
+ vs->top_of_screen = ( vs->top_of_screen + 1 ) % ( 2 * ROWS );
+ vs->curx = vs->indent;
+ update_all_rows( vs );
+ copy_row_to_screen( vs, vs->hiddenbuf );
+ clear_hidden_roll( vs );
+ vs->scroll = 26;
+}
+
+void vbiscreen_new_caption( vbiscreen_t *vs, int indent, int ital,
+ unsigned int colour, int row )
+{
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "indent: %d, ital: %d, colour: 0x%x, row: %d\n", indent, ital, colour, row );
+
+ if( 0 && vs->captions && vs->style <= ROLL_4 && vs->style ) {
+ if( row != vs->cury+1 ) {
+ vs->cury = row - 1;
+ clear_hidden_roll( vs );
+ } else {
+// scroll_screen( vs );
+ }
+ }
+
+ if( vs->style > ROLL_4 ) {
+ vs->cury = ( ( row > 0 ) ? row - 1 : 0 );
+ }
+
+ vs->fgcolour = colour;
+ vs->indent = indent;
+ vs->curx = indent;
+}
+
+void vbiscreen_set_mode( vbiscreen_t *vs, int caption, int style )
+{
+ if( !vs ) return;
+ if( vs->verbose )
+ fprintf( stderr, "in set mode\n");
+
+ if( vs->verbose ) {
+ fprintf( stderr, "Caption: %d ", caption );
+ switch( style ) {
+ case ROLL_2:
+ fprintf( stderr, "ROLL 2\n");
+ break;
+ case ROLL_3:
+ fprintf( stderr, "ROLL 3\n" );
+ break;
+ case ROLL_4:
+ fprintf( stderr, "ROLL 4\n" );
+ break;
+ case POP_UP:
+ fprintf( stderr, "POP UP\n" );
+ break;
+ case PAINT_ON:
+ fprintf( stderr, "PAINT ON\n" );
+ break;
+ default:
+ break;
+ }
+ }
+ if( !caption ) {
+ /* text mode */
+ vs->cury = 0;
+ } else {
+ /* captioning mode */
+ /* styles: ru2 ru3 ru4 pop paint
+ */
+ if( style != POP_UP && vs->style == POP_UP && !vs->got_eoc ) {
+ /* stupid that sometimes they dont send a EOC */
+ vbiscreen_end_of_caption( vs );
+ }
+
+ switch( style ) {
+ case ROLL_2:
+ case ROLL_3:
+ case ROLL_4:
+ if( vs->style == style ) {
+ return;
+ }
+ vs->first_line = ROWS - (style - 4);
+
+ if( vs->verbose )
+ fprintf( stderr, "first_line %d\n", vs->first_line );
+
+ vs->cury = ROWS - 1;
+ break;
+ case POP_UP:
+ vs->got_eoc = 0;
+ break;
+ case PAINT_ON:
+ break;
+ }
+ }
+
+ vs->captions = caption;
+ vs->style = style;
+}
+
+void vbiscreen_tab( vbiscreen_t *vs, int cols )
+{
+ if( !vs ) return;
+ if( cols < 0 || cols > 3 ) return;
+ vs->curx += cols;
+ if( vs->curx > 31 ) vs->curx = 31;
+}
+
+void vbiscreen_set_colour( vbiscreen_t *vs, unsigned int col )
+{
+ if( !vs ) return;
+ vs->fgcolour = col;
+}
+
+void vbiscreen_clear_current_cell( vbiscreen_t *vs )
+{
+ vs->text[ ( ( vs->top_of_screen + vs->cury ) % ( 2 * ROWS ) ) * COLS
+ + vs->curx + vs->indent ] = 0;
+}
+
+void vbiscreen_set_current_cell( vbiscreen_t *vs, char text )
+{
+ int base;
+ if( !vs ) return;
+ base = ( ( vs->top_of_screen + vs->cury ) % ( 2 * ROWS ) ) * COLS;
+ if( isprint( text ) )
+ vs->text[ base + vs->curx + vs->indent ] = text;
+ else
+ vs->text[ base + vs->curx + vs->indent ] = ' ';
+}
+
+void vbiscreen_delete_to_end( vbiscreen_t *vs )
+{
+ int i;
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in del to end\n");
+ for( i = vs->curx; i < COLS; i++ ) {
+ vbiscreen_clear_current_cell( vs );
+ vs->curx++;
+ }
+ vs->curx = COLS-1; /* is this right ? */
+ if( vs->captions && vs->style && vs->style != POP_UP )
+ update_row( vs );
+}
+
+void vbiscreen_backspace( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in backspace\n");
+ if( !vs->curx ) return;
+ vs->curx--;
+ vbiscreen_clear_current_cell( vs );
+ update_row( vs );
+}
+
+void vbiscreen_erase_displayed( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in erase disp\n");
+
+ if( vs->captions && vs->style && vs->style <= ROLL_4 ) {
+ clear_hidden_roll( vs );
+ }
+
+ clear_displayed_pop( vs );
+ clear_screen( vs );
+}
+
+void vbiscreen_erase_non_displayed( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in erase non disp\n");
+
+ if( vs->captions && vs->style == POP_UP ) {
+ memset( vs->buffers + vs->curbuffer * COLS * ROWS + vs->cury * COLS, 0, COLS );
+// clear_hidden_pop( vs );
+ } else if( vs->captions && vs->style && vs->style <= ROLL_4 ) {
+ clear_hidden_roll( vs );
+ }
+}
+
+void vbiscreen_carriage_return( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in CR\n");
+ if( vs->style != POP_UP) {
+ /* not sure if this is right for text mode */
+ /* in text mode, perhaps a CR on last row clears screen and goes
+ * to (0,0) */
+ scroll_screen( vs );
+ }
+
+ /* keep cursor on bottom for rollup */
+ if( vs->captions && vs->style && vs->style <= ROLL_4 )
+ vs->cury--;
+
+ vs->cury++;
+ vs->curx = 0;
+}
+
+void copy_buf_to_screen( vbiscreen_t *vs, char *buf )
+{
+ int base, i, j;
+ if( !vs ) return;
+
+ base = vs->top_of_screen * COLS;
+ for( j = 0, i = 0; i < ROWS * COLS; i++, j++ ) {
+ vs->text[ base ] = buf[ j ];
+ base++;
+ base %= 2 * ROWS * COLS;
+ }
+ update_all_rows( vs );
+}
+
+void vbiscreen_end_of_caption( vbiscreen_t *vs )
+{
+ /*int i;*/
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in end of caption\n");
+
+ if( vs->style == PAINT_ON ) {
+ copy_buf_to_screen( vs, vs->paintbuf );
+ clear_hidden_paint( vs );
+ } else if( vs->style == POP_UP ) {
+ copy_buf_to_screen( vs, vs->buffers + vs->curbuffer * COLS * ROWS );
+ vs->curbuffer ^= 1;
+ }
+
+ /* to be safe? */
+ vs->curx = 0;
+ vs->cury = ROWS - 1;
+ vs->got_eoc = 1;
+}
+
+void vbiscreen_print( vbiscreen_t *vs, char c1, char c2 )
+{
+ if( !vs ) return;
+ if( vs->verbose ) fprintf( stderr, "in print (%d, %d)[%c %c]\n", vs->curx, vs->cury, c1, c2);
+ if( vs->captions && vs->style == POP_UP ) {
+ /* this all gets displayed at another time */
+ if( vs->curx != COLS-1 ) {
+ *(vs->buffers + vs->curx + vs->curbuffer * ROWS * COLS + vs->cury * COLS ) = c1;
+ vs->curx++;
+ }
+
+ if( vs->curx != COLS-1 && c2 ) {
+ *(vs->buffers + vs->curx + vs->curbuffer * ROWS * COLS + vs->cury * COLS ) = c2;
+ vs->curx++;
+ } else if( c2 ) {
+ *(vs->buffers + vs->curx + vs->curbuffer * ROWS * COLS + vs->cury * COLS ) = c2;
+ }
+ }
+
+ if( vs->captions && vs->style == PAINT_ON ) {
+ if( vs->curx != COLS-1 ) {
+ vs->paintbuf[ vs->curx + vs->cury * COLS ] = c1;
+ vs->curx++;
+ }
+
+ if( vs->curx != COLS-1 && c2 ) {
+ vs->paintbuf[ vs->curx + vs->cury * COLS ] = c2;
+ vs->curx++;
+ } else if( c2 ) {
+ vs->paintbuf[ vs->curx + vs->cury * COLS ] = c2;
+ }
+ }
+
+ if( vs->captions && vs->style && vs->style <= ROLL_4 ) {
+ if( vs->curx != COLS-1 ) {
+ vs->hiddenbuf[ vs->curx ] = c1;
+ vs->curx++;
+ } else {
+ vs->hiddenbuf[ vs->curx ] = c1;
+ }
+
+ if( vs->curx != COLS-1 && c2 ) {
+ vs->hiddenbuf[ vs->curx ] = c2;
+ vs->curx++;
+ } else if( c2 ) {
+ vs->hiddenbuf[ vs->curx ] = c2;
+ }
+ }
+}
+
+void vbiscreen_reset( vbiscreen_t *vs )
+{
+ if( !vs ) return;
+ clear_screen( vs );
+ clear_hidden_pop( vs );
+ clear_displayed_pop( vs );
+ clear_hidden_roll( vs );
+ vs->captions = 0;
+ vs->style = 0;
+}
+
+void vbiscreen_composite_packed422_scanline( vbiscreen_t *vs,
+ unsigned char *output,
+ int width, int xpos,
+ int scanline )
+{
+ int x=0, y=0, row=0, index=0;
+
+ if( !vs ) return;
+ if( !output ) return;
+ if( scanline >= vs->y && scanline < vs->y + vs->height ) {
+
+ if( 0 && !vs->captions )
+ blit_colour_packed422_scanline( output + (vs->x*2), vs->width,
+ vs->bg_luma, vs->bg_cb,
+ vs->bg_cr );
+
+ index = vs->top_of_screen * COLS;
+ x = ( vs->x + vs->charwidth) & ~1;
+ for( row = 0; row < ROWS; row++ ) {
+ y = vs->y + row * vs->rowheight + vs->rowheight;
+ if( osd_string_visible( vs->line[ row ] ) ) {
+ if( scanline >= y &&
+ scanline < y + vs->rowheight ) {
+
+ int startx;
+ int strx;
+
+ startx = x - xpos;
+ strx = 0;
+
+ if( startx < 0 ) {
+ strx = -startx;
+ startx = 0;
+ }
+
+
+ if( startx < width ) {
+
+ if( vs->captions )
+ blit_colour_packed422_scanline(
+ output + (startx*2),
+ osd_string_get_width( vs->line[ row ] ),
+ vs->bg_luma,
+ vs->bg_cb,
+ vs->bg_cr );
+
+ osd_string_composite_packed422_scanline(
+ vs->line[ row ],
+ output + (startx*2),
+ output + (startx*2),
+ width - startx,
+ strx,
+ scanline - y );
+ }
+ }
+ index++;
+ }
+ }
+ }
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-01 05:06:16 +0000