projectm/src/projectM-jack/projectM-jack.cpp

/**
 * projectM -- Milkdrop-esque visualisation SDK
 * Copyright (C)2003-2004 projectM Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * See 'LICENSE.txt' included within this release
 *
 */
#include "video_init.h"
#include <fcntl.h>
#include <stdlib.h>
#include <math.h>
#include <SDL/SDL.h>
#include <projectM.hpp>
#include "sdltoprojectM.h"

#include "ConfigFile.h"
#include <string>
#include <iostream>
#include <stdio.h>
#include <unistd.h>

#include <jack/jack.h>

#define CONFIG_FILE "/share/projectM/config.inp"

std::string read_config();

jack_port_t *input_port;
jack_client_t *client;
jack_default_audio_sample_t out[1024*1000];

#ifdef DEBUG
FILE *debugFile = NULL;
#endif

volatile enum client_state_t {
	Init,
	Run,
	Exit
} client_state = Init;

SDL_Surface *screen;

projectM *globalPM = NULL;

int dumpFrame = 0;
int frameNumber = 0;


int texsize=512;
int gx=32,gy=24;
int wvw=512,wvh=512;
int fvw=1024,fvh=768;
int fps=30, fullscreen=0;




std::string read_config()
{

   int n;
   
   char num[512];
   FILE *in; 
   FILE *out;

   char* home;
   char projectM_home[1024];
   char projectM_config[1024];

   strcpy(projectM_config, PROJECTM_PREFIX);
   strcpy(projectM_config+strlen(PROJECTM_PREFIX), CONFIG_FILE);
   projectM_config[strlen(PROJECTM_PREFIX)+strlen(CONFIG_FILE)]='\0';
   printf("dir:%s \n",projectM_config);
   home=getenv("HOME");
   strcpy(projectM_home, home);
   strcpy(projectM_home+strlen(home), "/.projectM/config.inp");
   projectM_home[strlen(home)+strlen("/.projectM/config.inp")]='\0';

  
 if ((in = fopen(projectM_home, "r")) != 0) 
   {
     printf("reading ~/.projectM/config.inp \n");
     fclose(in);
     return std::string(projectM_home);
   }
 else
   {
     printf("trying to create ~/.projectM/config.inp \n");

     strcpy(projectM_home, home);
     strcpy(projectM_home+strlen(home), "/.projectM");
     projectM_home[strlen(home)+strlen("/.projectM")]='\0';
     mkdir(projectM_home,0755);

     strcpy(projectM_home, home);
     strcpy(projectM_home+strlen(home), "/.projectM/config.inp");
     projectM_home[strlen(home)+strlen("/.projectM/config.inp")]='\0';
     
     if((out = fopen(projectM_home,"w"))!=0)
       {
	
	 if ((in = fopen(projectM_config, "r")) != 0) 
	   {
	     
	     while(fgets(num,80,in)!=NULL)
	       {
		 fputs(num,out);
	       }
	     fclose(in);
	     fclose(out);
	    

	     if ((in = fopen(projectM_home, "r")) != 0) 
	       { 
		 printf("created ~/.projectM/config.inp successfully\n");  
		 fclose(in);
		 return std::string(projectM_home);
	       }
	     else{printf("This shouldn't happen, using implementation defualts\n");abort();}
	   }
	 else{printf("Cannot find projectM default config, using implementation defaults\n");abort();}
       }
     else
       {
	 printf("Cannot create ~/.projectM/config.inp, using default config file\n");
	 if ((in = fopen(projectM_config, "r")) != 0) 
	   { printf("Successfully opened default config file\n");
	     fclose(in);
	     return std::string(projectM_config);}
	 else{ printf("Using implementation defaults, your system is really messed up, I'm suprised we even got this far\n");  abort();}
	   
       }

   }


 abort();
} 

void renderLoop() {

    int i;
    int x, y;
    int index;
    short pcm_data[2][512];

    while ( 1 ) {
        projectMEvent evt;
        projectMKeycode key;
        projectMModifier mod;

        /** Process SDL events */
        SDL_Event event;
        while ( SDL_PollEvent( &event ) ) {
            /** Translate into projectM codes and process */
            evt = sdl2pmEvent( event );
            key = sdl2pmKeycode( event.key.keysym.sym );
            mod = sdl2pmModifier( event.key.keysym.mod );

	    if ( evt == PROJECTM_KEYDOWN ) {                 
     

                if(key == PROJECTM_K_f)
                {                       
		  if (++fullscreen%2)
		    {
		      resize_display(fvw, fvh, fullscreen%2);
		      globalPM->projectM_resetGL( fvw, fvh ); 
		    }
		  else
		    {
		      resize_display(wvw, wvh, fullscreen%2);
		      globalPM->projectM_resetGL( wvw, wvh ); 
		    }
                }
		else if(key == PROJECTM_K_q || key == PROJECTM_K_ESCAPE) {delete(globalPM); exit (1);}
                else  {globalPM->key_handler(evt,key,mod);}

            }
            else if ( evt == PROJECTM_VIDEORESIZE )
            {
                wvw=event.resize.w;
                wvh=event.resize.h;
                resize_display(wvw, wvh, fullscreen%2);
                globalPM->projectM_resetGL(  wvw, wvh ); 

            } 

          }



        /** Render the new frame */
        globalPM->renderFrame( );

      
        SDL_GL_SwapBuffers();
      }
	
  printf("Worker thread: Exiting\n");
  }
           
int
process (jack_nframes_t nframes, void *arg)
{
	jack_default_audio_sample_t *in;
	jack_transport_state_t ts = jack_transport_query(client, NULL);

	if (ts == JackTransportRolling) {

		if (client_state == Init)
			client_state = Run;

		in = (jack_default_audio_sample_t*)jack_port_get_buffer (input_port, nframes);
	       
		//memcpy (out, in,sizeof (jack_default_audio_sample_t) * nframes);	

		globalPM->pcm()->addPCMfloat(in,nframes);
		//printf("%x %f\n",nframes,in[128]);


	} else if (ts == JackTransportStopped) {

		if (client_state == Run)
			client_state = Exit;
	}

	return 0;      
}

void jack_shutdown (void *arg)
{
	exit (1);
}

int main( int argc, char **argv ) {
	const char **ports;
	const char *client_name;
	const char *server_name = NULL;
	jack_options_t options = JackNullOption;
	jack_status_t status;
	int i;
 char projectM_data[1024];


std::string config_file;
 config_file = read_config();

 ConfigFile config(config_file);

 wvw = config.read<int>( "Window Width", 512 );
 wvh = config.read<int>( "Window Height", 512 );
 int fullscreen = 0;
 if (config.read("Fullscreen", true)) fullscreen = 1;
      else fullscreen = 0;
 

#ifdef DEBUG
	int value;
	int rgb_size[3];
#endif

  const SDL_VideoInfo* info = NULL;
  int bpp = 0;
  /* Flags we will pass into SDL_SetVideoMode. */
  int flags = 0;

  //JACK INIT
  //----------------------------------------------
	if (argc >= 2) {		/* client name specified? */
		client_name = argv[1];
		if (argc >= 3) {	/* server name specified? */
			server_name = argv[2];
			//			options |= JackServerName;
		}
	} else {			/* use basename of argv[0] */
		client_name = strrchr(argv[0], '/');
		if (client_name == 0) {
			client_name = argv[0];
		} else {
			client_name++;
		}
	}

	/* open a client connection to the JACK server */

	client = jack_client_open (client_name, options, &status, server_name);
	if (client == NULL) {
		fprintf (stderr, "jack_client_open() failed, "
			 "status = 0x%2.0x\n", status);
		if (status & JackServerFailed) {
			fprintf (stderr, "Unable to connect to JACK server\n");
		}
		exit (1);
	}
	if (status & JackServerStarted) {
		fprintf (stderr, "JACK server started\n");
	}
	if (status & JackNameNotUnique) {
		client_name = jack_get_client_name(client);
		fprintf (stderr, "unique name `%s' assigned\n", client_name);
	}

	/* tell the JACK server to call `process()' whenever
	   there is work to be done.
	*/

	jack_set_process_callback (client, process, 0);

	/* tell the JACK server to call `jack_shutdown()' if
	   it ever shuts down, either entirely, or if it
	   just decides to stop calling us.
	*/

	jack_on_shutdown (client, jack_shutdown, 0);

	/* display the current sample rate. 
	 */

	printf ("engine sample rate: %d\n",
		jack_get_sample_rate (client));

	/* create two ports */

	input_port = jack_port_register (client, "input",
					 JACK_DEFAULT_AUDIO_TYPE,
					 JackPortIsInput, 0);

	if (input_port == NULL) {
		fprintf(stderr, "no more JACK ports available\n");
		exit (1);
	}

	/* Tell the JACK server that we are ready to roll.  Our
	 * process() callback will start running now. */



	//END JACK INIT ----------------------------------
  init_display(wvw,wvh,&fvw,&fvh,fullscreen);   
    /** Setup some window stuff */
    SDL_WM_SetCaption( PROJECTM_TITLE, NULL );
  globalPM = new projectM(config_file);
    /** Initialise projectM */
 



    //JACK BEGIN-----------------------------

	if (jack_activate (client)) {
		fprintf (stderr, "cannot activate client");
		exit (1);
	}

	/* Connect the ports.  You can't do this before the client is
	 * activated, because we can't make connections to clients
	 * that aren't running.  Note the confusing (but necessary)
	 * orientation of the driver backend ports: playback ports are
	 * "input" to the backend, and capture ports are "output" from
	 * it.
	 */

	ports = jack_get_ports (client, NULL, NULL, JackPortIsOutput);
	if (ports == NULL) {
		fprintf(stderr, "no physical capture ports\n");
		exit (1);
	}
      
	
        i=0;
        while (ports[i]!=NULL) 
	 { 
            printf("Connecting to Jack port %s\n",ports[i]);
	    if (jack_connect (client, ports[i], jack_port_name (input_port))) {
	      fprintf (stderr, "cannot connect input ports\n");
	    }
	      i++;
	     }
	     
	free (ports);

	//----------------------------------END


    /** Initialise the thread */
    renderLoop();

    return 1;
}