X-Git-Url: https://git.llucax.com/z.facultad/75.06/jacu.git/blobdiff_plain/9e5f9df91ca96fb4cf179841cea17c9b4fb0f99c..2ee6f95a8db79ede018e0f15124dd486451c4170:/src/jacu.c?ds=sidebyside

diff --git a/src/jacu.c b/src/jacu.c
index 8e74812..599d636 100644
--- a/src/jacu.c
+++ b/src/jacu.c
@@ -1,24 +1,34 @@
 
-#include "statichuff/statichuff.h"
+/* Jacu Team - GPL */
 #include "blocksorting/bs.h"
 #include "mtf/mtf.h"
+#include "zerogrouping/zerogrouping.h"
+#include "statichuff/statichuff.h"
 #include "vfile/vfile.h"
+#include "vfile/common.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
 
+long get_file_size(const char* filename);
+
 int main(int argc, char* argv[])
 {	
 	int cflag = 0;
 	int dflag = 0;
+	int zflag = 0;
 	int tflag = 0;
-	int pflag = 0;
+	int qflag = 0;
+	int sflag = 0;
+	int mflag = 0;
 	long int volumesize = 0;
 	size_t pagesize = 32768; /* 32KB */
 	int ch;
 	t_BlockSort *bs;
+	HUFF_STATE *shuff;
+	char *staticmodel = NULL;
 			
-	while ((ch = getopt(argc, argv, "cdt:p:")) != -1) { 
+	while ((ch = getopt(argc, argv, "scdzm:t:q:")) != -1) { 
 		 
 		switch (ch) { 
 			case 'c': cflag = 1; 
@@ -27,74 +37,220 @@ int main(int argc, char* argv[])
 			case 'd': dflag = 1; 
 					  break; 
 
-			case 't': tflag = 1; 
-					  volumesize = atol(optarg);
+			case 'z': zflag = 1; 
 					  break; 
-
-			case 'p': pflag = 1; 
-					  pagesize = atoi(optarg);
+			
+			case 'm': mflag = 1;
+					  staticmodel = optarg;
 					  break; 
+			
+			case 's': sflag = 1; 					  
+					  break;
+
+			case 't': tflag = 1; 
+				volumesize = atol(optarg);
+				break; 
+
+			case 'q': qflag = 1; 
+				switch (atoi(optarg))
+				{
+					case 0: pagesize = 1024; /* 1K */
+						break;
+					case 1: pagesize = 2048; /* 2K */
+						break;
+					case 2: pagesize = 4096; /* 4K */
+						break;
+					case 3: pagesize = 8192; /* 8K */
+						break;
+					case 4: pagesize = 16384; /* 16K */
+						break;
+					case 5: pagesize = 32768; /* 32K */
+						break;
+					case 6: pagesize = 65536; /* 64K */
+						break;
+					case 7: pagesize = 131072; /* 128K */
+						break;
+					case 8: pagesize = 262144; /* 256K */
+						break;
+					case 9: pagesize = 524288; /* 512K */
+						break;
+					default: pagesize = 0; /* error */
+				}
+				break; 
 
-			default: fprintf(stderr, "Usage: %s [-cdpt] sourcefile targetfile\n", argv[0]); 
+			default: fprintf(stderr, "Usage: %s [-cdzs][-q blksize][-t volsize][-m modeldumpfile] source target\n", argv[0]); 
 					 return(2);
 		}
 	}
 		
-	if ( (argc == 1) || (cflag & dflag) || !(cflag | dflag) || ((argc - optind) < 2) ) {
-		fprintf(stderr, "Usage: %s [-cdt] sourcefile targetfile\n", argv[0]); 
+	if ( (argc == 1) || (cflag & dflag) || !(cflag | dflag) || ((argc - optind) < 2) || (mflag & sflag)) {
+		fprintf(stderr, "Usage: %s [-cdzs][-q compressionquality][-t volsize][-m modeldumpfile] source target\n", argv[0]); 
 		return (3);
 	}
 	if ((tflag) && (volumesize <= 0l)) {
 		fprintf(stderr,"Error: The volume size must be a non-zero value\n");
 		return (4);
 	}
-	if ((pflag) && (pagesize <= 1u)) {
-		fprintf(stderr,"Error: El tamaño de página debe ser mayor a 1 byte.\n");
+	if ((qflag) && (pagesize <= 1u)) {
+		fprintf(stderr,"Error: El nivel de compresión debe ser entre 0 (menor) y 9 (mayor).\n");
 		return (5);
 	}
 		
 	if (cflag == 1) {
-		/* Comprimo */
-		/* No me gusta el tmpfile ... es para probar como anda todo junto */
-		FILE *fp, *fp_out;
-		unsigned long int i, j, total, k;
-		int *mtf;
-		char *salida, *data, c;
-		data = malloc(sizeof(char)*pagesize);
-		/* Reservo lugar tambien para guardar el k */
-		salida = malloc(sizeof(char)*(pagesize)+sizeof(unsigned long int)*2);
+		/* Comprimo */		
+		FILE *fp;
+		Uint32 i, j, total, k;
+		unsigned char *mtf;
+		unsigned char *salida, *data;
+		unsigned char *z;
+		int z_len;
+		
+		/* Preparo el compresor huffman */
+		if ((shuff = shuff_init_encoder_bychunk(argv[optind+1],volumesize*1024)) == NULL) return 1;
+		if (mflag == 1) shuff_loadmodel(shuff,staticmodel);
+		
+		/* Preparo el BS alocando mem para la Salida: V(vector) + K(colnum) */
+		data = malloc(sizeof(unsigned char)*pagesize);
+		salida = malloc(sizeof(unsigned char)*pagesize+sizeof(Uint32));
 		bs = bs_create(pagesize);
+
+		/* Abrimos el archivo a comprimir y encodeamos bloques */
 		fp = fopen(argv[optind], "rb");
-		fp_out = fopen("tmp.comp", "wb");
-		c = fgetc(fp);
+
+		/* Guardamos el pagesize como header (huffencoded) */
+		shuff_scanfreq_chunk(shuff,(char*)&pagesize,sizeof(size_t));
+
+		/* Guardamos cabecera para indicar si usamos ZG (huffencoded) */
+		if (zflag) shuff_scanfreq_chunk(shuff, "\001", 1);
+		else       shuff_scanfreq_chunk(shuff, "\000", 1);
+
 		total = 0;
 		while (!feof(fp)) {
 			i = 0;
 			while ((!feof(fp)) && (i < pagesize)) {
-				data[i++] = c;
-				c = fgetc(fp);
+				data[i++] = fgetc(fp);
 				total++;
 			}
-			/* Hago el BS */
+
+			/* Saco un EOF que lee de mas */
+			if (i<pagesize) i--;
+
+			/* Aplico BS guardando su resultado + el K en salida */
 			bs_solve(data, salida, bs, &k, i);
-			/* Le aplico el MTF */
-			mtf = jacu_mtf(salida, i+sizeof(unsigned long int)*2);
-			for(j=0; j<i; j++)
-				fputc(mtf[j], fp_out);
+
+			/* Le aplico el MTF a salida */
+			mtf = jacu_mtf(salida, i+sizeof(Uint32), &z, &z_len);
+
+			/* Guardo el z_len y el Z */
+			shuff_scanfreq_chunk(shuff,(char*)&z_len,sizeof(int));
+			shuff_scanfreq_chunk(shuff,z,z_len);
+			
+			/* Si me lo piden, aplico ZG. */
+			if (zflag) {
+				size_t len;
+				char buff[2];
+				Uint32 total_size = i + sizeof(Uint32);
+				ZG zg;
+				zg_init(&zg);
+				/* Guardo la salida del MTF con ceros agrupados (ZG) */
+				for (j = 0; j < total_size; ++j)
+					if ((len = zg_group(&zg, buff, mtf[j])))
+						shuff_scanfreq_chunk(shuff, buff, len);
+			} else {
+				/* Comprimo la salida del MTF */				
+				shuff_scanfreq_chunk(shuff,mtf,i+sizeof(Uint32));
+			}
+			free(mtf);
+			free(z);
 		}
-		fclose(fp);
-		fclose(fp_out);
+
+		/* Limpiando */
+		fclose(fp);		
 		bs_destroy(bs);
-		i = shuff_encode_file("tmp.comp",argv[optind+1], volumesize);
-		/* borro el temporal */
-		unlink("tmp.comp");
-		return i;
+
+		/* Comprimo con Huffman */		
+		shuff_encode_file(shuff);
+		if (sflag == 1) shuff_savemodel(shuff);
+		/* Shutdown Huffman */
+		shuff_deinit_encoder(shuff);
+		free(shuff);
+
+		/* Muestro bpb */
+		printf("Comprimido a %.04f bpb.\n", get_file_size(argv[optind+1])*8.0/get_file_size(argv[optind]));
+		return 0;
 	}
 	
 	if (dflag == 1) { 
 		/* Descomprimo */
-		return shuff_decode_file(argv[optind],argv[optind+1]);
-	}
+		FILE *fp_out;
+		/*FILE *fp_in;*/
+		Uint32 block_size = 0, k;
+		unsigned char *block, *mtf, *orig;
+		unsigned char *z;
+		int z_len,moredata = 0,decoded = 0;
+		char use_zg;
+
+		/* Inicializo el descompresor */
+		if ((shuff = shuff_init_decoder(argv[optind],NULL)) == NULL) return 1;
+				
+		/* Abrimos el archivo de salida */
+		fp_out = fopen(argv[optind+1], "wb");
+		
+		/* Descomprimo primero que nada el pagesize utilizado para comprimir */
+		if (!(moredata = shuff_decode_chunk(shuff,(char*)&block_size,sizeof(Uint32),&decoded))) return 1;
+
+		/* Descomprimo byte que indica si se usa ZG */
+		if (!(moredata = shuff_decode_chunk(shuff, &use_zg, 1, &decoded))) return 1;
+
+		/* Creo buffers */
+		block = malloc(block_size*sizeof(unsigned char)+sizeof(Uint32));
+		orig = malloc(block_size*sizeof(unsigned char));
+
+		/* Descomprimimos de a chunks segun convenga */
+		do {			
+			if (block_size > 0) {
+				/* Descomprimo el Zlen y el Z del MTF */
+				moredata = shuff_decode_chunk(shuff,(char*)&z_len,sizeof(int),&decoded);				
+				z = malloc(sizeof(unsigned char)*z_len);
+				moredata = shuff_decode_chunk(shuff,z,z_len,&decoded);
+				
+				/* Levanto una salida de MTF y le aplico MTF Inverso */
+				moredata = shuff_decode_chunk(shuff,block,block_size+sizeof(Uint32),&decoded);				
+				mtf = jacu_mtf_inv(z, block, decoded);
+
+				/* Ya tengo la salida del BS, tonces levanto su K */
+				memcpy(&k, mtf, sizeof(Uint32));
+
+				/* Obtengo el chunk original aplicando BS Inverso */
+				bs_restore(orig, mtf+sizeof(Uint32), k, decoded - sizeof(Uint32));
+
+				fwrite(orig, decoded - sizeof(Uint32), sizeof(unsigned char), fp_out);
+				free(mtf);
+				free(z);
+			}
+			else return 1;
+		} while (moredata);		
+		
+		/* Close up files and free mem */
+		fclose(fp_out);
+		free(block);
+		free(orig);
 		
+		/* Shutdown Huffman */
+		shuff_deinit_decoder(shuff);
+		free(shuff);
+	}
+
 	return 0;
 }
+
+long get_file_size(const char* filename)
+{
+	FILE* file;
+	long  file_size;
+
+	if (!(file = fopen(filename, "ab"))) return -1;
+	file_size = ftell(file);
+	fclose(file);
+	return file_size;
+}