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