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#include <cstdio>
#include <algorithm>
#include <chrono>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
#include "kms++.h"
#include "test.h"
using namespace std;
using namespace kms;
static void main_loop(Card& card);
class Flipper
{
public:
Flipper(Card& card, unsigned width, unsigned height)
: m_current(0), m_bar_xpos(0)
{
auto format = PixelFormat::XRGB8888;
m_fbs[0] = new DumbFramebuffer(card, width, height, format);
m_fbs[1] = new DumbFramebuffer(card, width, height, format);
}
~Flipper()
{
delete m_fbs[0];
delete m_fbs[1];
}
Framebuffer* get_next()
{
m_current ^= 1;
const int bar_width = 20;
const int bar_speed = 8;
auto fb = m_fbs[m_current];
int current_xpos = m_bar_xpos;
int old_xpos = (current_xpos + (fb->width() - bar_width - bar_speed)) % (fb->width() - bar_width);
int new_xpos = (current_xpos + bar_speed) % (fb->width() - bar_width);
draw_color_bar(*fb, old_xpos, new_xpos, bar_width);
m_bar_xpos = new_xpos;
return fb;
}
private:
DumbFramebuffer* m_fbs[2];
int m_current;
int m_bar_xpos;
};
class OutputFlipHandler : private PageFlipHandlerBase
{
public:
OutputFlipHandler(Connector* conn, Crtc* crtc, const Videomode& mode)
: m_connector(conn), m_crtc(crtc), m_mode(mode),
m_flipper(conn->card(), mode.hdisplay, mode.vdisplay)
{
}
OutputFlipHandler(const OutputFlipHandler& other) = delete;
OutputFlipHandler& operator=(const OutputFlipHandler& other) = delete;
void set_mode()
{
auto mode = m_connector->get_default_mode();
auto fb = m_flipper.get_next();
int r = m_crtc->set_mode(m_connector, *fb, mode);
ASSERT(r == 0);
}
void start_flipping()
{
m_t1 = std::chrono::steady_clock::now();
m_frame_num = 0;
queue_next();
}
private:
void handle_page_flip(uint32_t frame, double time)
{
++m_frame_num;
if (m_frame_num % 100 == 0) {
auto t2 = std::chrono::steady_clock::now();
std::chrono::duration<float> fsec = t2 - m_t1;
printf("Output %d: fps %f\n", m_connector->idx(), 100.0 / fsec.count());
m_t1 = t2;
}
queue_next();
}
void queue_next()
{
auto crtc = m_crtc;
auto& card = crtc->card();
auto fb = m_flipper.get_next();
if (card.has_atomic()) {
int r;
AtomicReq req(card);
req.add(m_crtc, "FB_ID", fb->id());
r = req.test();
ASSERT(r == 0);
r = req.commit(this);
ASSERT(r == 0);
} else {
int r = crtc->page_flip(*fb, this);
ASSERT(r == 0);
}
}
private:
Connector* m_connector;
Crtc* m_crtc;
Videomode m_mode;
int m_frame_num;
chrono::steady_clock::time_point m_t1;
Flipper m_flipper;
};
int main()
{
Card card;
if (card.master() == false)
printf("Not DRM master, modeset may fail\n");
//card.print_short();
vector<OutputFlipHandler*> outputs;
for (auto pipe : card.get_connected_pipelines())
{
auto conn = pipe.connector;
auto crtc = pipe.crtc;
auto mode = conn->get_default_mode();
auto output = new OutputFlipHandler(conn, crtc, mode);
outputs.push_back(output);
}
for(auto out : outputs)
out->set_mode();
for(auto out : outputs)
out->start_flipping();
main_loop(card);
for(auto out : outputs)
delete out;
}
static void main_loop(Card& card)
{
fd_set fds;
FD_ZERO(&fds);
int fd = card.fd();
printf("press enter to exit\n");
while (true) {
int r;
FD_SET(0, &fds);
FD_SET(fd, &fds);
r = select(fd + 1, &fds, NULL, NULL, NULL);
if (r < 0) {
fprintf(stderr, "select() failed with %d: %m\n", errno);
break;
} else if (FD_ISSET(0, &fds)) {
fprintf(stderr, "exit due to user-input\n");
break;
} else if (FD_ISSET(fd, &fds)) {
card.call_page_flip_handlers();
}
}
}
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