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#include <stdlib.h>
#include <glib.h>
#include <egg/egg-hack.h>
/* We ask for 1 frame per millisecond.
* Whenever this rate can't be achieved then the timeline
* will interpolate the number frames that should have
* passed between timeouts. */
#define TEST_TIMELINE_FPS 1000
#define TEST_TIMELINE_FRAME_COUNT 5000
/* We are at the mercy of the system scheduler so this
* may not be a very reliable tolerance. */
#define TEST_ERROR_TOLERANCE 20
typedef struct _TestState {
EggTimeline *timeline;
GTimeVal start_time;
guint new_frame_counter;
gint expected_frame;
gint completion_count;
gboolean passed;
}TestState;
static void
new_frame_cb (EggTimeline *timeline,
gint frame_num,
TestState *state)
{
GTimeVal current_time;
gint current_frame;
glong msec_diff;
gint loop_overflow = 0;
static gint step = 1;
g_get_current_time (¤t_time);
current_frame = egg_timeline_get_current_frame (state->timeline);
msec_diff = (current_time.tv_sec - state->start_time.tv_sec) * 1000;
msec_diff += (current_time.tv_usec - state->start_time.tv_usec)/1000;
/* If we expect to have interpolated past the end of the timeline
* we keep track of the overflow so we can determine when
* the next timeout will happen. We then clip expected_frames
* to TEST_TIMELINE_FRAME_COUNT since egg-timeline
* semantics guaranty this frame is always signaled before
* looping */
if (state->expected_frame > TEST_TIMELINE_FRAME_COUNT)
{
loop_overflow = state->expected_frame - TEST_TIMELINE_FRAME_COUNT;
state->expected_frame = TEST_TIMELINE_FRAME_COUNT;
}
if (current_frame >= (state->expected_frame-TEST_ERROR_TOLERANCE)
&& current_frame <= (state->expected_frame+TEST_ERROR_TOLERANCE))
{
g_print ("\nelapsed milliseconds=%-5li expected frame=%-4i actual frame=%-4i (OK)\n",
msec_diff,
state->expected_frame,
current_frame);
}
else
{
g_print ("\nelapsed milliseconds=%-5li expected frame=%-4i actual frame=%-4i (FAILED)\n",
msec_diff,
state->expected_frame,
current_frame);
state->passed = FALSE;
}
if (step>0)
{
state->expected_frame = current_frame + (TEST_TIMELINE_FPS / 4);
g_print ("Sleeping for 250ms so next frame should be (%i + %i) = %i\n",
current_frame, (TEST_TIMELINE_FPS / 4), state->expected_frame);
g_usleep (250000);
}
else
{
state->expected_frame = current_frame + TEST_TIMELINE_FPS;
g_print ("Sleeping for 1sec so next frame should be (%i + %i) = %i\n",
current_frame, TEST_TIMELINE_FPS, state->expected_frame);
g_usleep (1000000);
}
if (current_frame >= TEST_TIMELINE_FRAME_COUNT)
{
state->expected_frame += loop_overflow;
state->expected_frame -= TEST_TIMELINE_FRAME_COUNT;
g_print ("End of timeline reached: Wrapping expected frame too %i\n",
state->expected_frame);
}
state->new_frame_counter++;
step = -step;
}
static void
completed_cb (EggTimeline *timeline,
TestState *state)
{
state->completion_count++;
if (state->completion_count == 2)
{
if (state->passed)
{
g_print("Passed\n");
exit(EXIT_SUCCESS);
}
else
{
g_print("Failed\n");
exit(EXIT_FAILURE);
}
}
}
int
main (int argc, char **argv)
{
TestState state;
egg_init (&argc, &argv);
state.timeline =
egg_timeline_new (TEST_TIMELINE_FRAME_COUNT,
TEST_TIMELINE_FPS);
egg_timeline_set_loop (state.timeline, TRUE);
g_signal_connect (G_OBJECT(state.timeline),
"new-frame",
G_CALLBACK(new_frame_cb),
&state);
g_signal_connect (G_OBJECT(state.timeline),
"completed",
G_CALLBACK(completed_cb),
&state);
state.completion_count = 0;
state.new_frame_counter = 0;
state.passed = TRUE;
state.expected_frame = 0;
g_get_current_time (&state.start_time);
egg_timeline_start (state.timeline);
egg_main();
return EXIT_FAILURE;
}
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