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weston/clients/content_protection.c
Ankit Nautiyal 8b40deaaaa clients: Add content-protection client app 
This patch adds a client app which can be used to show the
implementation of weston content-protection protocol. The app can
request for Type-0 and Type-1 content or request for disabling
content-protection to the content-protection server.
It listens for the content-protection status change event from the
server and accordingly display the required content.

The content Type-0, Type-1 and unprotected contents are prepared
using cairo surface, with different color and text to distinguish
between the contents.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
2019-07-05 14:13:30 +05:30

385 lines
12 KiB
C
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/*
* Copyright © 2018 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include <cairo.h>
#include <sys/time.h>
#include <linux/input.h>
#include <wayland-client.h>
#include "weston-content-protection-client-protocol.h"
#include "window.h"
#include <wayland-client-protocol.h>
#define WIDTH 500
#define HEIGHT 400
#define FRAME_H 18
#define FRAME_W 5
#define BUTTON_WIDTH 65
#define BUTTON_HEIGHT 20
enum protection_mode {
RELAXED,
ENFORCED
};
struct protected_content_player {
struct weston_content_protection *protection;
struct weston_protected_surface *psurface;
struct display *display;
struct window *window;
struct widget *widget;
struct button_t *b0, *b1, *off, *enforced, *relaxed;
int width, height, x, y;
enum weston_protected_surface_type protection_type;
enum protection_mode mode;
};
struct button_t {
struct window *window;
struct widget *widget;
struct protected_content_player *pc_player;
const char *name;
};
/**
* An event to tell the client that there is a change in protection status
*
* This event is sent whenever there is a change in content
* protection. The content protection status can be ON or OFF. ON
* in case of the desired protection type is accepted on all
* connectors, and Off in case of any of the connector
* content-protection property is changed from "enabled"
*/
static void
handle_status_changed(void *data, struct weston_protected_surface *psurface,
uint32_t status)
{
struct protected_content_player *pc_player = data;
enum weston_protected_surface_type event_status = status;
switch (event_status) {
case WESTON_PROTECTED_SURFACE_TYPE_HDCP_0:
pc_player->protection_type = WESTON_PROTECTED_SURFACE_TYPE_HDCP_0;
break;
case WESTON_PROTECTED_SURFACE_TYPE_HDCP_1:
pc_player->protection_type = WESTON_PROTECTED_SURFACE_TYPE_HDCP_1;
break;
case WESTON_PROTECTED_SURFACE_TYPE_UNPROTECTED:
default:
pc_player->protection_type = WESTON_PROTECTED_SURFACE_TYPE_UNPROTECTED;
}
window_schedule_redraw(pc_player->window);
}
static const struct weston_protected_surface_listener pc_player_listener = {
handle_status_changed,
};
static void
draw_content(cairo_surface_t *surface, int x, int y, int width, int height,
enum weston_protected_surface_type type, enum protection_mode mode)
{
cairo_t *cr;
cairo_text_extents_t extents;
const char *content_text;
const char *mode_text;
cr = cairo_create(surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_rectangle(cr, x, y, width, height);
if (type == WESTON_PROTECTED_SURFACE_TYPE_HDCP_0)
cairo_set_source_rgba(cr, 0, 1.0, 0, 1.0);
else if (type == WESTON_PROTECTED_SURFACE_TYPE_HDCP_1)
cairo_set_source_rgba(cr, 0, 0, 1.0, 1.0);
else
cairo_set_source_rgba(cr, 1.0, 0, 0, 1.0);
cairo_fill(cr);
cairo_set_source_rgba(cr, 0, 0, 0, 1.0);
cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size(cr, 15);
if (type == WESTON_PROTECTED_SURFACE_TYPE_HDCP_0)
content_text = "Content-Type : Type-0";
else if (type == WESTON_PROTECTED_SURFACE_TYPE_HDCP_1)
content_text = "Content-Type : Type-1";
else
content_text = "Content-Type : Unprotected";
cairo_text_extents(cr, content_text, &extents);
cairo_move_to(cr, width/2 - (extents.width/2),
height/2 - (extents.height/2));
cairo_show_text(cr, content_text);
if (mode == ENFORCED)
mode_text = "Mode : Enforced";
else
mode_text = "Mode : Relaxed";
cairo_text_extents(cr, mode_text, &extents);
cairo_move_to(cr, width / 2 - (extents.width / 2),
2 * height / 3 - (2 * extents.height / 3));
cairo_show_text(cr, mode_text);
cairo_fill(cr);
cairo_destroy(cr);
}
static void
redraw_handler(struct widget *widget, void *data)
{
struct protected_content_player *pc_player = data;
cairo_surface_t *surface;
struct rectangle rect;
widget_get_allocation(pc_player->widget, &rect);
surface = window_get_surface(pc_player->window);
if (surface == NULL ||
cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS) {
fprintf(stderr, "failed to create cairo egl surface\n");
return;
}
draw_content(surface, rect.x, rect.y, rect.width, rect.height,
pc_player->protection_type, pc_player->mode);
cairo_surface_destroy(surface);
}
static void
resize_handler(struct widget *widget, int32_t width, int32_t height, void *data)
{
struct rectangle allocation;
struct protected_content_player *pc_player = data;
widget_get_allocation(pc_player->widget, &allocation);
widget_set_allocation(pc_player->b0->widget,
allocation.x + 20, allocation.y + 30,
BUTTON_WIDTH, BUTTON_HEIGHT);
widget_set_allocation(pc_player->b1->widget,
allocation.x + 20 + BUTTON_WIDTH + 5,
allocation.y + 30,
BUTTON_WIDTH, BUTTON_HEIGHT);
widget_set_allocation(pc_player->off->widget,
allocation.x + 20 + 2 * (BUTTON_WIDTH + 5),
allocation.y + 30,
BUTTON_WIDTH, BUTTON_HEIGHT);
widget_set_allocation(pc_player->enforced->widget,
allocation.x + 20 + 3 * (BUTTON_WIDTH + 5),
allocation.y + 30,
BUTTON_WIDTH, BUTTON_HEIGHT);
widget_set_allocation(pc_player->relaxed->widget,
allocation.x + 20 + 4 * (BUTTON_WIDTH + 5),
allocation.y + 30,
BUTTON_WIDTH, BUTTON_HEIGHT);
}
static void
buttons_handler(struct widget *widget, struct input *input, uint32_t time,
uint32_t button, enum wl_pointer_button_state state, void *data)
{
struct button_t *b = data;
struct protected_content_player *pc_player = b->pc_player;
struct wl_surface *surface;
if (strcmp(b->name, "ENFORCED") == 0) {
weston_protected_surface_enforce(pc_player->psurface);
pc_player->mode = ENFORCED;
window_schedule_redraw(pc_player->window);
}
else if (strcmp(b->name, "RELAXED") == 0) {
weston_protected_surface_relax(pc_player->psurface);
pc_player->mode = RELAXED;
window_schedule_redraw(pc_player->window);
}
else if (strcmp(b->name, "TYPE-0") == 0)
weston_protected_surface_set_type(pc_player->psurface,
WESTON_PROTECTED_SURFACE_TYPE_HDCP_0);
else if (strcmp(b->name, "TYPE-1") == 0)
weston_protected_surface_set_type(pc_player->psurface,
WESTON_PROTECTED_SURFACE_TYPE_HDCP_1);
else
weston_protected_surface_set_type(pc_player->psurface,
WESTON_PROTECTED_SURFACE_TYPE_UNPROTECTED);
surface = window_get_wl_surface(pc_player->window);
wl_surface_commit(surface);
}
static void
handle_global(struct display *display, uint32_t name, const char *interface,
uint32_t version, void *data)
{
struct protected_content_player *pc_player = data;
if (strcmp(interface, "weston_content_protection") == 0) {
pc_player->protection = display_bind(display, name,
&weston_content_protection_interface,
1);
}
}
static void
buttons_redraw_handler(struct widget *widget, void *data)
{
struct button_t *b = data;
cairo_surface_t *surface;
struct rectangle allocation;
cairo_t *cr;
surface = window_get_surface(b->window);
widget_get_allocation(b->widget, &allocation);
cr = cairo_create(surface);
cairo_rectangle(cr, allocation.x, allocation.y, allocation.width,
allocation.height);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 1, 1, 1, 1);
cairo_fill(cr);
cairo_set_source_rgba(cr, 0, 0, 0, 1.0);
cairo_select_font_face(cr, "Sans", CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size(cr, 10);
cairo_move_to(cr, allocation.x + 5, allocation.y + 15);
cairo_show_text(cr, b->name);
cairo_fill(cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
}
static struct button_t*
create_button(struct protected_content_player *pc_player, const char *name)
{
struct button_t *b;
b = zalloc(sizeof(struct button_t));
if (b == NULL) {
fprintf(stderr, "Failed to allocate memory for button.\n");
exit(0);
}
b->widget = widget_add_widget(pc_player->widget, b);
b->window = pc_player->window;
b->pc_player = pc_player;
b->name = name;
widget_set_redraw_handler(b->widget, buttons_redraw_handler);
widget_set_button_handler(b->widget, buttons_handler);
return b;
}
static void
destroy_button(struct button_t *b)
{
if (!b)
return;
widget_destroy(b->widget);
free(b);
}
static void free_pc_player(struct protected_content_player *pc_player)
{
if (!pc_player)
return;
destroy_button(pc_player->b0);
destroy_button(pc_player->b1);
destroy_button(pc_player->off);
destroy_button(pc_player->enforced);
destroy_button(pc_player->relaxed);
widget_destroy(pc_player->widget);
window_destroy(pc_player->window);
free(pc_player);
}
int main(int argc, char *argv[])
{
struct protected_content_player *pc_player;
struct display *d;
static const char str_type_0[] = "TYPE-0";
static const char str_type_1[] = "TYPE-1";
static const char str_type_off[] = "OFF";
static const char str_type_enforced[] = "ENFORCED";
static const char str_type_relaxed[] = "RELAXED";
struct wl_surface *surface;
pc_player = zalloc(sizeof(struct protected_content_player));
if (pc_player == NULL) {
fprintf(stderr, "failed to allocate memory: %m\n");
return -1;
}
d = display_create(&argc, argv);
if (d == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return -1;
}
pc_player->protection_type = WESTON_PROTECTED_SURFACE_TYPE_UNPROTECTED;
pc_player->mode = RELAXED;
pc_player->width = WIDTH * 2.0/4.0;
pc_player->height = HEIGHT * 2.0/4.0;
pc_player->x = WIDTH * 1.0/4.0;
pc_player->y = HEIGHT * 1.0/4.0;
pc_player->window = window_create(d);
pc_player->widget = window_frame_create(pc_player->window, pc_player);
pc_player->display = d;
display_set_user_data(d, pc_player);
display_set_global_handler(d, handle_global);
surface = window_get_wl_surface(pc_player->window);
if (pc_player->protection == NULL) {
printf("The content-protection object is NULL\n");
return -1;
}
pc_player->psurface = weston_content_protection_get_protection(pc_player->protection,
surface);
weston_protected_surface_add_listener(pc_player->psurface,
&pc_player_listener,
pc_player);
pc_player->b0 = create_button(pc_player, str_type_0);
pc_player->b1 = create_button(pc_player, str_type_1);
pc_player->off = create_button(pc_player, str_type_off);
pc_player->enforced = create_button(pc_player, str_type_enforced);
pc_player->relaxed = create_button(pc_player, str_type_relaxed);
window_set_title(pc_player->window, "Player");
widget_set_redraw_handler(pc_player->widget, redraw_handler);
widget_set_resize_handler(pc_player->widget, resize_handler);
window_schedule_resize(pc_player->window, WIDTH, HEIGHT);
widget_schedule_redraw(pc_player->b0->widget);
widget_schedule_redraw(pc_player->b1->widget);
widget_schedule_redraw(pc_player->off->widget);
display_run(d);
weston_protected_surface_destroy(pc_player->psurface);
weston_content_protection_destroy(pc_player->protection);
free_pc_player(pc_player);
display_destroy(d);
return 0;
}
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