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/*
* Copyright © 2016 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Kevin DuBois <kevin.dubois@canonical.com>
*
*/
#include <mir_toolkit/mir_connection.h>
#include <mir_toolkit/mir_buffer_stream.h>
#include <mir_toolkit/mir_surface.h>
#include <mir_toolkit/mir_presentation_chain.h>
#include <mir_toolkit/mir_buffer.h>
#include <mir_toolkit/version.h>
#include <sys/types.h>
#include <signal.h>
#include <string.h>
#include <pthread.h>
#include <math.h>
#include <stdlib.h>
#include <getopt.h>
#include <unistd.h>
#include <assert.h>
#define PALETTE_SIZE 5
void fill_buffer_diagonal_stripes(
MirBuffer* buffer, unsigned int fg, unsigned int bg)
{
MirGraphicsRegion region = mir_buffer_get_graphics_region(buffer, mir_read_write);
if ((!region.vaddr) || (region.pixel_format != mir_pixel_format_abgr_8888))
return;
unsigned char* vaddr = (unsigned char*) region.vaddr;
int const num_stripes = 10;
int const stripes_thickness = region.width / num_stripes;
for(int i = 0; i < region.height; i++)
{
unsigned int* pixel = (unsigned int*) vaddr;
for(int j = 0; j < region.width ; j++)
{
if ((((i + j) / stripes_thickness) % stripes_thickness) % 2)
pixel[j] = bg;
else
pixel[j] = fg;
}
vaddr += region.stride;
}
}
typedef struct SubmissionInfo
{
int available;
MirBuffer* buffer;
pthread_mutex_t lock;
pthread_cond_t cv;
} SubmissionInfo;
static void available_callback(MirBuffer* buffer, void* client_context)
{
SubmissionInfo* info = (SubmissionInfo*) client_context;
pthread_mutex_lock(&info->lock);
info->available = 1;
info->buffer = buffer;
pthread_cond_broadcast(&info->cv);
pthread_mutex_unlock(&info->lock);
}
volatile sig_atomic_t rendering = 1;
static void shutdown(int signum)
{
if ((signum == SIGTERM) || (signum == SIGINT))
rendering = 0;
}
int main(int argc, char** argv)
{
static char const *socket_file = NULL;
int arg = -1;
int width = 400;
int height = 400;
while ((arg = getopt (argc, argv, "m:s:h:")) != -1)
{
switch (arg)
{
case 'm':
socket_file = optarg;
break;
case 's':
{
unsigned int w, h;
if (sscanf(optarg, "%ux%u", &w, &h) == 2)
{
width = w;
height = h;
}
else
{
printf("Invalid size: %s, using default size\n", optarg);
}
break;
}
case 'h':
case '?':
default:
puts(argv[0]);
printf("Usage:\n");
printf(" -m <Mir server socket>\n");
printf(" -s WIDTHxHEIGHT of window\n");
printf(" -h help dialog\n");
return -1;
}
}
int const chain_width = width / 2;
int const chain_height = height / 2;
sigset_t signal_set;
sigemptyset(&signal_set);
sigaddset(&signal_set, SIGALRM);
sigprocmask(SIG_BLOCK, &signal_set, NULL);
struct sigaction action;
action.sa_handler = shutdown;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
sigaction(SIGINT, &action, NULL);
sigaction(SIGTERM, &action, NULL);
int displacement_x = 0;
int displacement_y = 0;
MirPixelFormat format = mir_pixel_format_abgr_8888;
MirConnection* connection = mir_connect_sync(socket_file, "prerendered_frames");
if (!mir_connection_is_valid(connection))
{
printf("could not connect to server file at: %s\n", socket_file);
return -1;
}
unsigned int const num_chains = 4;
unsigned int const num_buffers = num_chains + 1;
unsigned int const fg[PALETTE_SIZE] = {
0xFF14BEA0,
0xFF000000,
0xFF1111FF,
0xFFAAAAAA,
0xFFB00076
};
unsigned int const bg[PALETTE_SIZE] = {
0xFFDF2111,
0xFFFFFFFF,
0xFF11DDDD,
0xFF404040,
0xFFFFFF00
};
unsigned int spare_buffer = 0;
MirPresentationChain* chain[num_chains];
for(unsigned int i = 0u; i < num_chains; i++)
{
chain[i] = mir_connection_create_presentation_chain_sync(connection);
if (!mir_presentation_chain_is_valid(chain[i]))
{
printf("could not create MirPresentationChain\n");
// TODO this is a frig to pass smoke tests until we support NBS by default
#if (MIR_CLIENT_VERSION <= MIR_VERSION_NUMBER(3, 3, 0))
printf("This is currently an unreleased API - likely server support is switched off\n");
return 0;
#else
return -1;
#endif
}
}
//Arrange a 2x2 grid of chains within surface
MirSurfaceSpec* spec = mir_connection_create_spec_for_normal_surface(connection, width, height, format);
mir_surface_spec_add_presentation_chain(
spec, chain_width, chain_height, displacement_x, displacement_y, chain[0]);
mir_surface_spec_add_presentation_chain(
spec, chain_width, chain_height, chain_width, displacement_y, chain[1]);
mir_surface_spec_add_presentation_chain(
spec, chain_width, chain_height, displacement_x, chain_height, chain[2]);
mir_surface_spec_add_presentation_chain(
spec, chain_width, chain_height, chain_width, chain_height, chain[3]);
MirSurface* surface = mir_surface_create_sync(spec);
mir_surface_spec_release(spec);
MirBufferUsage usage = mir_buffer_usage_software;
SubmissionInfo buffer_available[num_buffers];
//prerender the frames
for (unsigned int i = 0u; i < num_buffers; i++)
{
pthread_cond_init(&buffer_available[i].cv, NULL);
pthread_mutex_init(&buffer_available[i].lock, NULL);
buffer_available[i].available = 0;
buffer_available[i].buffer = NULL;
mir_connection_allocate_buffer(
connection, width, height, format, usage, available_callback, &buffer_available[i]);
pthread_mutex_lock(&buffer_available[i].lock);
while(!buffer_available[i].buffer)
pthread_cond_wait(&buffer_available[i].cv, &buffer_available[i].lock);
fill_buffer_diagonal_stripes(buffer_available[i].buffer,
fg[i % PALETTE_SIZE], bg[i % PALETTE_SIZE]);
pthread_mutex_unlock(&buffer_available[i].lock);
}
while (rendering)
{
for(unsigned int i = 0u; i < num_chains; i++)
{
MirBuffer* b;
pthread_mutex_lock(&buffer_available[spare_buffer].lock);
while(!buffer_available[spare_buffer].available)
pthread_cond_wait(&buffer_available[spare_buffer].cv, &buffer_available[spare_buffer].lock);
buffer_available[spare_buffer].available = 0;
b = buffer_available[spare_buffer].buffer;
pthread_mutex_unlock(&buffer_available[spare_buffer].lock);
mir_presentation_chain_submit_buffer(chain[i], b);
//just looks like a blur if we don't slow things down
ualarm(500000, 0);
int sig;
sigwait(&signal_set, &sig);
if (!rendering) break;
if (++spare_buffer > num_chains)
spare_buffer = 0;
}
}
for (unsigned int i = 0u; i < num_buffers; i++)
mir_buffer_release(buffer_available[i].buffer);
for (unsigned int i = 0u; i < num_chains; i++)
mir_presentation_chain_release(chain[i]);
mir_surface_release_sync(surface);
mir_connection_release(connection);
return 0;
}
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