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#include <limits.h>
#include <unistd.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <gem.h>
#include "vaproto.h"
#include "gemtk.h"
#ifndef NDEBUG
# define DEBUG_PRINT(x) printf x
#else
# define DEBUG_PRINT(x)
#endif
/* Global memory, at least 1024 bytes large: */
static char *va_helpbuf;
/* Desktop's AES ID: */
static short av_shell_id = -1;
/* What AV commands can desktop do? */
static short av_shell_status = 0;
/* The application name used for AV/VA messages: */
static const char * av_clientname = "gemtk_av_app";
static short get_avserver(void)
{
short ret = -100;
const char * av_env = getenv("AVSERVER");
if (av_env) {
char av_envname[9];
strncpy(av_envname,av_env, 8);
av_envname[8] = '\0';
while (strlen (av_envname) < 8) {
strcat(av_envname, " ");
}
ret = appl_find (av_envname);
}
return ret;
}
/**
* initialitze the AV client API
* \param appname Name of the application passed to menu_register()
* \return returns 1 on success, otherwise an negative error code.
*
*/
int gemtk_av_init(const char *appname)
{
short mode = 0x0003 /* prefer TT ram */
| 0x0020; /* global accesible */
if(av_shell_id != -1) {
/* Already initialized */
return(1);
}
va_helpbuf = (char*)Mxalloc(1024, mode);
if(va_helpbuf == NULL){
gemtk_msg_box_show(GEMTK_MSG_BOX_ALERT, "Could not allocate AV memory!");
return(-1);
}
if(appname != NULL){
av_clientname = appname;
}
av_shell_id = get_avserver();
DEBUG_PRINT(("AV Server ID: %d", av_shell_id));
gemtk_av_send(AV_PROTOKOLL, NULL, NULL);
va_helpbuf[0] = '\0';
}
void gemtk_av_exit(void)
{
if(av_shell_id == -1) {
/* Nothing to do */
return;
}
if (av_shell_status & AA_EXIT) {
/* AV server knows AV_EXIT */
gemtk_av_send(AV_EXIT, NULL, NULL);
}
if(va_helpbuf != NULL){
free(va_helpbuf);
va_helpbuf = NULL;
}
av_shell_id = -1;
}
bool gemtk_av_send (short message, const char * data1, const char * data2)
{
short msg[8];
short to_ap_id = av_shell_id;
/* - 100 to ap id would be no AV server */
if (to_ap_id == -100){
return false;
}
msg[0] = message;
msg[1] = gl_apid;
msg[7] = msg[6] = msg[5] = msg[4] = msg[3] = msg[2] = 0;
switch (message)
{
case AV_EXIT:
msg[3] = gl_apid;
break;
case AV_PROTOKOLL:
msg[3] = VV_START | VV_ACC_QUOTING;
*(char **)(msg+6) = strcpy (va_helpbuf, av_clientname);
break;
case AV_STARTPROG:
DEBUG_PRINT(("AV_STARTPROG: %s (%s)\n", data1, data2));
*(char **)(msg+3) = strcpy(va_helpbuf, data1);
*(char **)(msg+5) = strcpy(va_helpbuf, data2);
break;
case AV_VIEW:
DEBUG_PRINT(("AV_VIEW: %s (%d)\n", data1, (short)data2));
*(char **)(msg+3) = strcpy(va_helpbuf, data1);
msg[5] = (short)data2;
break;
default:
return false; /* not supported */
}
return (appl_write (to_ap_id, 16, msg) > 0);
}
bool gemtk_av_dispatch (short msg[8])
{
if(av_shell_id == -1)
return(false);
switch (msg[0]) {
case VA_PROTOSTATUS :
DEBUG_PRINT(("AV STATUS: %d for %d\n", msg[3], msg[1]));
if (msg[1] == av_shell_id) {
av_shell_status = msg[3];
if(av_shell_status & AA_STARTPROG){
printf(" AA_STARTPROG\n");
}
}
break;
default:
DEBUG_PRINT(("Unknown AV message: %d", msg[0]));
break;
}
return(true);
}
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