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Camera.lpr
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Camera.lpr
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program Camera;
{$mode delphi}{$H+}
{$define use_tftp} // if PI not connected to LAN and set for DHCP then remove this
uses
RaspberryPi3,
GlobalConfig,
GlobalConst,
GlobalTypes,
Platform,
Threads,
SysUtils,
Classes,
FrameBuffer,
{$ifdef use_tftp}
uTFTP, Winsock2,
{$endif}
Console, uLog, uIL_Client, uOMX, VC4,
Ultibo
{ Add additional units here };
(* based on hjimbens camera example
https://www.raspberrypi.org/forums/viewtopic.php?t=44852
pjde 2018 *)
const
kRendererInputPort = 90;
kClockOutputPort0 = 80;
kCameraCapturePort = 71;
kCameraClockPort = 73;
var
Console1, Console2, Console3 : TWindowHandle;
IPAddress : string;
ch : char;
DefFrameBuff : PFrameBufferDevice;
DefFrameProps : TFramebufferProperties;
procedure Log1 (s : string);
begin
ConsoleWindowWriteLn (Console1, s);
end;
procedure Log2 (s : string);
begin
ConsoleWindowWriteLn (Console2, s);
end;
procedure Log3 (s : string);
begin
ConsoleWindowWriteLn (Console3, s);
end;
procedure Msg2 (Sender : TObject; s : string);
begin
Log2 ('TFTP - ' + s);
end;
{$ifdef use_tftp}
function WaitForIPComplete : string;
var
TCP : TWinsock2TCPClient;
begin
TCP := TWinsock2TCPClient.Create;
Result := TCP.LocalAddress;
if (Result = '') or (Result = '0.0.0.0') or (Result = '255.255.255.255') then
begin
while (Result = '') or (Result = '0.0.0.0') or (Result = '255.255.255.255') do
begin
sleep (1000);
Result := TCP.LocalAddress;
end;
end;
TCP.Free;
end;
{$endif}
procedure WaitForSDDrive;
begin
while not DirectoryExists ('C:\') do sleep (500);
end;
procedure camera;
var
cstate : OMX_TIME_CONFIG_CLOCKSTATETYPE;
cameraport : OMX_CONFIG_PORTBOOLEANTYPE;
displayconfig : OMX_CONFIG_DISPLAYREGIONTYPE;
camera, video_render, clock : PCOMPONENT_T;
list : array [0..3] of PCOMPONENT_T;
tunnel : array [0..3] of TUNNEL_T;
client : PILCLIENT_T;
height, w, h, x, y, layer : integer;
begin
height := 600;
w := (4 * height) div 3;
h := height;
x := (DefFrameProps.PhysicalWidth - w) div 2;
y := (DefFrameProps.PhysicalHeight - h) div 2;
layer := 0;
list[0] := nil; // suppress hint
FillChar (list, SizeOf (list), 0);
tunnel[0].sink_port := 0; // suppress hint
FillChar (tunnel, SizeOf (tunnel), 0);
client := ilclient_init;
if client <> nil then
Log ('IL Client initialised OK.')
else
begin
Log ('IL Client failed to initialise.');
exit;
end;
if OMX_Init = OMX_ErrorNone then
Log ('OMX Initialised OK.')
else
begin
Log ('OMX failed to Initialise.');
exit;
end;
// create camera
if (ilclient_create_component (client, @camera, 'camera', ILCLIENT_DISABLE_ALL_PORTS) = 0) then
Log ('camera created ok')
else
exit;
list[0] := camera;
// create video_render
if (ilclient_create_component(client, @video_render, 'video_render', ILCLIENT_DISABLE_ALL_PORTS) = 0) then
Log ('Video Render created ok')
else
exit;
list[1] := video_render;
// create clock
if (ilclient_create_component(client, @clock, 'clock', ILCLIENT_DISABLE_ALL_PORTS) = 0) then
Log ('Clock created ok.')
else
exit;
list[2] := clock;
// enable the capture port of the camera
cameraport.nSize := 0; // suppress hint
FillChar (cameraport, sizeof (cameraport), 0);
cameraport.nSize := sizeof (cameraport);
cameraport.nVersion.nVersion := OMX_VERSION;
cameraport.nPortIndex := kCameraCapturePort;
cameraport.bEnabled := OMX_TRUE;
if (OMX_SetParameter (ilclient_get_handle (camera), OMX_IndexConfigPortCapturing, @cameraport) = OMX_ErrorNone) then
Log ('Capture port set ok.')
else
exit;
// configure the renderer to display the content in a 4:3 rectangle in the middle of a 1280x720 screen
displayconfig.nSize := 0; // suppress hint
FillChar (displayconfig, SizeOf (displayconfig), 0);
displayconfig.nSize := SizeOf (displayconfig);
displayconfig.nVersion.nVersion := OMX_VERSION;
displayconfig.set_ := OMX_DISPLAY_SET_FULLSCREEN or OMX_DISPLAY_SET_DEST_RECT or OMX_DISPLAY_SET_LAYER;
displayconfig.nPortIndex := kRendererInputPort;
if (w > 0) and (h > 0) then
displayconfig.fullscreen := OMX_FALSE
else
displayconfig.fullscreen := OMX_TRUE;
displayconfig.dest_rect.x_offset := x;
displayconfig.dest_rect.y_offset := y;
displayconfig.dest_rect.width := w;
displayconfig.dest_rect.height := h;
displayconfig.layer := layer;
Log (format ('dest_rect: %d,%d,%d,%d', [x, y, w, h]));
Log (format ('layer: %d', [displayconfig.layer]));
if (OMX_SetParameter (ilclient_get_handle (video_render), OMX_IndexConfigDisplayRegion, @displayconfig) = OMX_ErrorNone) then
Log ('Render Region set ok.')
else
exit;
// create a tunnel from the camera to the video_render component
set_tunnel (@tunnel[0], camera, kCameraCapturePort, video_render, kRendererInputPort);
// create a tunnel from the clock to the camera
set_tunnel (@tunnel[1], clock, kClockOutputPort0, camera, kCameraClockPort);
// setup both tunnels
if ilclient_setup_tunnel (@tunnel[0], 0, 0) = 0 then
Log ('First tunnel created ok.')
else
exit;
if ilclient_setup_tunnel (@tunnel[1], 0, 0) = 0 then
Log ('Second tunnel created ok.')
else
exit;
// change state of components to executing
ilclient_change_component_state (camera, OMX_StateExecuting);
ilclient_change_component_state (video_render, OMX_StateExecuting);
ilclient_change_component_state (clock, OMX_StateExecuting);
// start the camera by changing the clock state to running
cstate.nSize := 0; // suppress hint
FillChar (cstate, SizeOf (cstate), 0);
cstate.nSize := sizeOf (displayconfig);
cstate.nVersion.nVersion := OMX_VERSION;
cstate.eState := OMX_TIME_ClockStateRunning;
OMX_SetParameter (ilclient_get_handle (clock), OMX_IndexConfigTimeClockState, @cstate);
Log ('Press any key to exit.');
ch := #0;
ConsoleGetKey (ch, nil);
ilclient_disable_tunnel (@tunnel[0]);
ilclient_disable_tunnel (@tunnel[1]);
ilclient_teardown_tunnels (@tunnel[0]);
ilclient_state_transition (@list, OMX_StateIdle);
ilclient_state_transition (@list, OMX_StateLoaded);
ilclient_cleanup_components (@list);
OMX_Deinit;
ilclient_destroy (client);
end;
begin
Console1 := ConsoleWindowCreate (ConsoleDeviceGetDefault, CONSOLE_POSITION_LEFT, true);
Console2 := ConsoleWindowCreate (ConsoleDeviceGetDefault, CONSOLE_POSITION_TOPRIGHT, false);
Console3 := ConsoleWindowCreate (ConsoleDeviceGetDefault, CONSOLE_POSITION_BOTTOMRIGHT, false);
SetLogProc (@Log1);
Log3 ('Basic Camera Test.');
Log3 ('Based on hjimbens program https://www.raspberrypi.org/forums/viewtopic.php?t=44852');
WaitForSDDrive;
Log3 ('SD Drive ready.');
IPAddress := WaitForIPComplete;
Log3 ('Network ready. Local Address : ' + IPAddress + '.');
{$ifdef use_tftp}
Log2 ('TFTP - Syntax "tftp -i ' + IPAddress + ' put kernel7.img"');
SetOnMsg (@Msg2);
{$endif}
DefFrameBuff := FramebufferDeviceGetDefault;
FramebufferDeviceGetProperties (DefFrameBuff, @DefFrameProps);
BCMHostInit;
camera;
ThreadHalt (0);
end.