void music_obj<audio_queue_driver>::buffer_callback(AudioQueueBufferRef buffer)
{
if (read_packets(buffer) == 0)
{
if(loop_)
{
packet_index_ = start_packet_index_;
read_packets(buffer);
}
}
}
void main() {
bzero(&serial_tio, sizeof(serial_tio));
port_fd = open(USB_PORT, O_RDWR | O_NOCTTY);
if (port_fd < 0) {
perror("Failed to open serial port");
return;
}
serial_tio.c_cflag = BAUDRATE | DATABITS | STOPBITS | PARITYON | PARITY | CLOCAL| CREAD;
serial_tio.c_iflag = IGNPAR;
serial_tio.c_lflag = ICANON;
serial_tio.c_cc[VMIN]= 1;
serial_tio.c_cc[VTIME] = 0;
tcflush(port_fd, TCIFLUSH);
tcsetattr (port_fd, TCSANOW, &serial_tio);
file = fopen("PacketLog.txt","w+");
if(file < 0) {
perror("Failed to open file for writing");
return;
}
read_packets();
}
void music_obj<audio_queue_driver>::prime()
{
UInt32 i;
for (i = 0; i < NUM_BUFFERS; ++i)
{
AudioQueueAllocateBuffer(queue_, BUFFER_SIZE_BYTES, &buffers_[i]);
if (read_packets(buffers_[i]) == 0)
{
break;
}
}
UInt32 frames_primed;
AudioQueuePrime(queue_, i, &frames_primed);
LOG("Primed %d frames", frames_primed);
}
int main(int argc, char *argv[])
{
int ret;
VC_RECT_T src_rect;
VC_RECT_T dst_rect;
DISPMANX_UPDATE_HANDLE_T update;
uint32_t vc_image_ptr;
bcm_host_init();
display = vc_dispmanx_display_open( 0 );
image = calloc( 1, PITCH * HEIGHT ); // buffer 0
assert(image);
// initialize image buffer with clock run in
int n, m, clock = 0x275555;
for (m=0; m<24; m++) {
for (n=0; n<HEIGHT; n++) {
ROW(n)[m] = clock&1;
}
clock = clock >> 1;
}
// fill up image with filler packets
// get_packet will return filler because we haven't loaded the fifo yet.
get_packet(ROW(0)+24);
for (n=1; n<HEIGHT; n++) {
memcpy(ROW(n)+24, ROW(0)+24, 336);
}
// set up some resources
vc_dispmanx_rect_set( &image_rect, 0, 0, WIDTH, HEIGHT);
for (n=0;n<3;n++) {
resource[n] = vc_dispmanx_resource_create( TYPE, WIDTH, HEIGHT, &vc_image_ptr );
assert( resource[n] );
ret = vc_dispmanx_resource_set_palette( resource[n], palette, 0, sizeof palette );
assert( ret == 0 );
ret = vc_dispmanx_resource_write_data( resource[n], TYPE, PITCH, image, &image_rect );
assert( ret == 0 );
}
vc_dispmanx_rect_set( &image_rect, OFFSET+24, 0, 336, HEIGHT); // from now on, only copy the parts that change
update = vc_dispmanx_update_start( 10 );
assert( update );
vc_dispmanx_rect_set( &src_rect, 0, 0, WIDTH << 16, HEIGHT << 16 );
vc_dispmanx_rect_set( &dst_rect, 0, 0, 720, HEIGHT );
element = vc_dispmanx_element_add( update, display, 2000,
&dst_rect, resource[2], &src_rect,
DISPMANX_PROTECTION_NONE,
NULL, NULL, VC_IMAGE_ROT0 );
ret = vc_dispmanx_update_submit_sync( update );
assert( ret == 0 );
// BUG: clear any existing callbacks, even to other apps.
// https://github.com/raspberrypi/userland/issues/218
vc_dispmanx_vsync_callback(display, NULL, NULL);
vc_dispmanx_vsync_callback(display, vsync, NULL);
if (argc == 2 && argv[1][0] == '-') {
while(read_packets()) {
;
}
} else {
demo();
}
vc_dispmanx_vsync_callback(display, NULL, NULL); // disable callback
update = vc_dispmanx_update_start( 10 );
assert( update );
ret = vc_dispmanx_element_remove( update, element );
assert( ret == 0 );
ret = vc_dispmanx_update_submit_sync( update );
assert( ret == 0 );
for (n=0; n<3; n++) {
ret = vc_dispmanx_resource_delete( resource[0] );
assert( ret == 0 );
}
ret = vc_dispmanx_display_close( display );
assert( ret == 0 );
return 0;
}
