--- /dev/null
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <math.h>
+
+static const char usage[] =
+"Usage: %s filename [filename ...]\n"
+"\tCreate C code for codebook tables.\n";
+
+static const char format[] =
+"The table format must be:\n"
+"\tTwo integers describing the dimensions of the codebook.\n"
+"\tThen, enough numbers to fill the specified dimensions.\n";
+
+static const char header[] =
+"/* THIS IS A GENERATED FILE. Edit generate_codebook.c and its input */\n\n"
+"/*\n"
+" * This intermediary file and the files that used to create it are under \n"
+" * The LGPL. See the file COPYING.\n"
+" */\n\n"
+"#include \"defines.h\"\n\n";
+
+struct codebook {
+ unsigned int k;
+ unsigned int log2m;
+ unsigned int m;
+ float * cb;
+};
+
+static void
+dump_array(const struct codebook * b, int index)
+{
+ int limit = b->k * b->m;
+ int i;
+
+ printf("static const float codes%d[] = {\n", index);
+ for ( i = 0; i < limit; i++ ) {
+ printf(" %g", b->cb[i]);
+ if ( i < limit - 1 )
+ printf(",");
+ printf("\n");
+ }
+ printf("};\n");
+}
+
+static void
+dump_structure(const struct codebook * b, int index)
+{
+ printf(" {\n");
+ printf(" %d,\n", b->k);
+ printf(" %g,\n", log(b->m) / log(2));
+ printf(" %d,\n", b->m);
+ printf(" codes%d\n", index);
+ printf(" }");
+}
+
+float
+get_float(FILE * in, const char * name, char * * cursor, char * buffer,
+ int size)
+{
+ for ( ; ; ) {
+ char * s = *cursor;
+ char c;
+
+ while ( (c = *s) != '\0' && !isdigit(c) && c != '-' && c != '.' )
+ s++;
+
+ /* Comments start with "#" and continue to the end of the line. */
+ if ( c != '\0' && c != '#' ) {
+ char * end = 0;
+ float f = 0;
+
+ f = strtod(s, &end);
+
+ if ( end != s )
+ *cursor = end;
+ return f;
+ }
+
+ if ( fgets(buffer, size, in) == NULL ) {
+ fprintf(stderr, "%s: Format error. %s\n", name, format);
+ exit(1);
+ }
+ *cursor = buffer;
+ }
+}
+
+static struct codebook *
+load(FILE * file, const char * name)
+{
+ char line[1024];
+ char * cursor = line;
+ struct codebook * b = malloc(sizeof(struct codebook));
+ int i;
+ int size;
+
+ *cursor = '\0';
+
+ b->k = (int)get_float(file, name, &cursor, line, sizeof(line));
+ b->m = (int)get_float(file, name ,&cursor, line, sizeof(line));
+ size = b->k * b->m;
+
+ b->cb = (float *)malloc(size * sizeof(float));
+
+ for ( i = 0; i < size; i++ )
+ b->cb[i] = get_float(file, name, &cursor, line, sizeof(line));
+
+ return b;
+}
+
+int
+main(int argc, char * * argv)
+{
+ struct codebook * * cb = malloc(argc * sizeof(struct codebook *));
+ int i;
+
+ if ( argc < 2 ) {
+ fprintf(stderr, usage, argv[0]);
+ fprintf(stderr, format);
+ exit(1);
+ }
+
+ for ( i = 0; i < argc - 1; i++ ) {
+ FILE * in = fopen(argv[i + 1], "r");
+
+ if ( in == NULL ) {
+ perror(argv[i + 1]);
+ exit(1);
+ }
+
+ cb[i] = load(in, argv[i + 1]);
+
+ fclose(in);
+ }
+
+ printf(header);
+ for ( i = 0; i < argc - 1; i++ ) {
+ printf(" /* %s */\n", argv[i + 1]);
+ dump_array(cb[i], i);
+ }
+ printf("\nconst struct lsp_codebook lsp_cb[] = {\n");
+ for ( i = 0; i < argc - 1; i++ ) {
+ printf(" /* %s */\n", argv[i + 1]);
+ dump_structure(cb[i], i);
+ printf(",\n");
+ }
+ printf(" { 0, 0, 0, 0 }\n");
+ printf("};\n");
+
+ return 0;
+}
projects / freetel-svn-tracking.git / commitdiff