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Working.lpr
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Working.lpr
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program Working;
{$mode delphi}{$H+}
{$define use_tftp} // if PI not connected to LAN and set for DHCP then remove this
// based on working.c
// for rasberry-pi-gpu-audio-video_master
// companion code to "Raspberry PI GPU Audio Video Progamming" by Jan Newmarch.
uses
RaspberryPi3,
GlobalConfig,
GlobalConst,
GlobalTypes,
Platform,
Threads,
SysUtils,
Classes,
Ultibo, VC4,
{$ifdef use_tftp}
uTFTP,
{$endif}
Console, Winsock2, uLog, uOMX, uIL_Client
{ Add additional units here };
const
ny : array [boolean] of string = ('NO', 'YES');
var
Console1, Console2, Console3 : TWindowHandle;
IPAddress : string;
err : OMX_ERRORTYPE;
handle : OMX_HANDLETYPE;
n : integer;
callbacks : OMX_CALLBACKTYPE;
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;
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;
procedure WaitForSDDrive;
begin
while not DirectoryExists ('C:\') do sleep (500);
end;
procedure printState (handle : OMX_HANDLETYPE);
var
state : OMX_STATETYPE;
err : OMX_ERRORTYPE;
begin
err := OMX_GetState (handle, @state);
if err <> OMX_ErrorNone then
begin
Log ('Error on getting state.');
exit;
end;
case state of
OMX_StateLoaded : Log ('StateLoaded');
OMX_StateIdle : Log ('StateIdle');
OMX_StateExecuting : Log ('StateExecuting');
OMX_StatePause : Log ('StatePause');
OMX_StateWaitForResources : Log ('StateWait');
OMX_StateInvalid : Log ('StateInvalid');
else Log ('State unknown');
end;
end;
function cEventHandler (hComponent : OMX_HANDLETYPE;
pAppData : OMX_PTR;
eEvent : OMX_EVENTTYPE;
Data1 : OMX_U32;
Data2 : OMX_U32;
pEventData : OMX_PTR) : OMX_ERRORTYPE; cdecl;
begin
Log ('Hi there, I am in the callback');
Log ('Event is ' + eEvent.ToString);
Log ('Param1 is ' + Data1.ToString);
Log ('Param2 is ' + Data2.ToString);
Result := OMX_ErrorNone;
end;
procedure disableSomePorts (handle : OMX_HANDLETYPE; indexType : OMX_INDEXTYPE);
var
param : OMX_PORT_PARAM_TYPE;
startPortNumber, endPortNumber : integer;
nPorts : integer;
n : integer;
err : OMX_ERRORTYPE;
begin
param.nSize := 0;
FillChar (param, sizeof (OMX_PORT_PARAM_TYPE), 0);
param.nSize := sizeof (OMX_PORT_PARAM_TYPE);
param.nVersion.nVersion := OMX_VERSION;
err := OMX_GetParameter (handle, indexType, @param);
if err <> OMX_ErrorNone then
begin
Log ('Error in getting image OMX_PORT_PARAM_TYPE parameter.');
exit;
end;
startPortNumber := param.nStartPortNumber;
nPorts := param.nPorts;
endPortNumber := startPortNumber + nPorts;
for n := startPortNumber to endPortNumber - 1 do
begin
OMX_SendCommand (handle, OMX_CommandPortDisable, n, nil);
end;
end;
procedure disableAllPorts (handle : OMX_HANDLETYPE);
begin
disableSomePorts (handle, OMX_IndexParamVideoInit);
disableSomePorts (handle, OMX_IndexParamImageInit);
disableSomePorts (handle, OMX_IndexParamAudioInit);
disableSomePorts (handle, OMX_IndexParamOtherInit);
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 ('OpenMAX IL Test.');
WaitForSDDrive;
Log3 ('SD Drive ready.');
IPAddress := WaitForIPComplete;
Log3 ('Network ready. Local Address : ' + IPAddress + '.');
{$ifdef use_tftp}
Log2 ('TFTP - Enabled.');
Log2 ('TFTP - Syntax "tftp -i ' + IPAddress + ' PUT kernel7.img"');
SetOnMsg (@Msg2);
{$endif}
callbacks.EventHandler := cEventHandler;
callbacks.EmptyBufferDone := nil;
callbacks.FillBufferDone := nil;
BCMHostInit;
err := OMX_Init;
if err <> OMX_ErrorNone then
begin
Log ('OMX_Init failed. Error Code ' + err.ToHexString (8));
ThreadHalt (0);
end;
// Ask the core for a handle to the component
err := OMX_GetHandle (@handle, 'OMX.broadcom.audio_render', nil, @callbacks);
if err<> OMX_ErrorNone then
begin
Log ('OMX_GetHandle failed. Error Code ' + err.ToHexString (8));
ThreadHalt (0);
end;
sleep (1);
// check our current state - should be Loaded
printState (handle);
disableAllPorts (handle);
// request a move to idle
OMX_SendCommand (handle, OMX_CommandStateSet, OMX_StateIdle, nil);
n := 0;
while n < 10 do
begin
sleep (1);
n := n + 1;
end;
// are we there yet?
printState (handle);
ThreadHalt (0);
end.