unsigned long easeout_to_frame(GCContext *context, unsigned long destination_frame, int seconds)
{
GCVDPAUContext *vdpau = &context->VDPAU_context;
Movie *movie = context->movie_context;
unsigned long frames = 0;
unsigned long sf = movie->frame_offset;
long df = 0;
int i = 0;
// GTimer *timer = g_timer_new();
df = destination_frame - sf;
frames = seconds * FPS;
// g_timer_start(timer);
for (i=0; i < frames; i++) {
float c = (float)df * (powf((float)i / (float)frames - 1, 3) + 1);
movie->frame_offset = sf + c;
movie->fract_frame_count = movie->frame_offset;
movie->pre_load_surface = display_surface(context, movie->pre_load_surface);
load_frame(context, movie->frame_offset, movie->pre_load_surface);
if (movie->new_frame)
break;
}
// g_message("Ease done in %f seconds, at frame %lu", g_timer_elapsed(timer, NULL), movie->frame_offset);
// g_timer_destroy(timer);
return movie->frame_offset;
}
/** Display gallium surface in X window */
static void
flush_frontbuffer(struct pipe_winsys *pws,
struct pipe_surface *psurf,
void *context_private)
{
struct xlib_egl_surface *xsurf = (struct xlib_egl_surface *) context_private;
display_surface(pws, psurf, xsurf);
}
gpointer display_thread(gpointer data)
{
GCContext *context = (GCContext*)data;
GCConfig *config = context->config;
GCVDPAUContext *vdpau = &context->VDPAU_context;
Movie *movie = context->movie_context;
gint64 timeout = 0;
int current_direction = DIRECTION_FORWARD;
if (!context)
g_error("Missing context\n");
movie->pre_load_surface = vdpau->surface_queue.next;
load_frame(context, movie->frame_offset, movie->pre_load_surface);
do {
movie->pre_load_surface = display_surface(context, movie->pre_load_surface);
timeout = g_get_monotonic_time() + config->seconds_per_frame * G_TIME_SPAN_SECOND;
g_mutex_lock(&movie->tick_lock);
if (movie->ease_to) {
movie->new_frame = FALSE;
easeout_to_frame(context, movie->ease_to_frame, config->easing_factor);
movie->ease_to = FALSE;
}
while (!movie->new_frame && !movie->ease_to && !context->exit) {
if (!g_cond_wait_until(&movie->tick_cond, &movie->tick_lock, timeout)) {
movie->frame_offset++;
movie->fract_frame_count++;
movie->play_direction = DIRECTION_FORWARD;
movie->new_frame = TRUE;
//g_message("tick: %lu", movie->frame_offset);
break;
}
}
movie->new_frame = FALSE;
g_mutex_unlock(&movie->tick_lock);
load_frame(context, movie->frame_offset, movie->pre_load_surface);
} while (!context->exit);
munmap(movie->planes, config->movie_size);
close(movie->fd_movie);
vdpau_exit(context);
x11_exit(context);
g_main_loop_quit(context->g_main_loop);
return NULL;
}
static EGLBoolean
xlib_eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
{
/* error checking step: */
if (!_eglSwapBuffers(drv, dpy, draw))
return EGL_FALSE;
{
struct xlib_egl_surface *xsurf = lookup_surface(draw);
struct pipe_winsys *pws = xsurf->winsys;
struct pipe_surface *psurf =
st_get_framebuffer_surface(xsurf->Framebuffer, ST_SURFACE_BACK_LEFT);
st_notify_swapbuffers(xsurf->Framebuffer);
display_surface(pws, psurf, xsurf);
check_and_update_buffer_size(xsurf);
}
return EGL_TRUE;
}
