gstreamer/gst/vbidec/vbiscreen.c

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/**
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#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 <glib.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_set_verbose (vbiscreen_t * vs, int verbose)
{
vs->verbose = verbose;
}
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 (g_ascii_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++;
}
}
}
}