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Diffstat (limited to 'media/pocketsphinx/src/blkarray_list.c')
| -rw-r--r-- | media/pocketsphinx/src/blkarray_list.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/media/pocketsphinx/src/blkarray_list.c b/media/pocketsphinx/src/blkarray_list.c new file mode 100644 index 000000000..4b9eb67d8 --- /dev/null +++ b/media/pocketsphinx/src/blkarray_list.c @@ -0,0 +1,172 @@ +/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */ +/* ==================================================================== + * Copyright (c) 1999-2004 Carnegie Mellon University. All rights + * reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * + * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND + * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY + * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * ==================================================================== + * + */ + +/* + * blkarray_list.c -- block array-based list structure. + * + * HISTORY + * + * 18-Feb-2004 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon + * Started. + */ + +/* System headers. */ +#include <assert.h> + +/* SphinxBase headers. */ +#include <sphinxbase/prim_type.h> +#include <sphinxbase/err.h> +#include <sphinxbase/ckd_alloc.h> + +/* Local headers. */ +#include "blkarray_list.h" + + +#define BLKARRAY_DEFAULT_MAXBLKS 16380 +#define BLKARRAY_DEFAULT_BLKSIZE 16380 + + +blkarray_list_t * +_blkarray_list_init(int32 maxblks, int32 blksize) +{ + blkarray_list_t *bl; + + if ((maxblks <= 0) || (blksize <= 0)) { + E_ERROR("Cannot allocate %dx%d blkarray\n", maxblks, blksize); + return NULL; + } + + bl = (blkarray_list_t *) ckd_calloc(1, sizeof(blkarray_list_t)); + bl->ptr = (void ***) ckd_calloc(maxblks, sizeof(void **)); + bl->maxblks = maxblks; + bl->blksize = blksize; + bl->n_valid = 0; + bl->cur_row = -1; /* No row is allocated (dummy) */ + bl->cur_row_free = blksize; /* The dummy row is full */ + + return bl; +} + + +blkarray_list_t * +blkarray_list_init(void) +{ + return _blkarray_list_init(BLKARRAY_DEFAULT_MAXBLKS, + BLKARRAY_DEFAULT_BLKSIZE); +} + +void +blkarray_list_free(blkarray_list_t *bl) +{ + blkarray_list_reset(bl); + ckd_free(bl->ptr); + ckd_free(bl); +} + + +int32 +blkarray_list_append(blkarray_list_t * bl, void *data) +{ + int32 id; + + assert(bl); + + if (bl->cur_row_free >= bl->blksize) { + /* Previous row is filled; need to allocate a new row */ + bl->cur_row++; + + if (bl->cur_row >= bl->maxblks) { + E_ERROR("Block array (%dx%d) exhausted\n", + bl->maxblks, bl->blksize); + bl->cur_row--; + return -1; + } + + /* Allocate the new row */ + assert(bl->ptr[bl->cur_row] == NULL); + bl->ptr[bl->cur_row] = (void **) ckd_malloc(bl->blksize * + sizeof(void *)); + + bl->cur_row_free = 0; + } + + bl->ptr[bl->cur_row][bl->cur_row_free] = data; + (bl->cur_row_free)++; + + id = (bl->n_valid)++; + assert(id >= 0); + + return id; +} + + +void +blkarray_list_reset(blkarray_list_t * bl) +{ + int32 i, j; + + /* Free all the allocated elements as well as the blocks */ + for (i = 0; i < bl->cur_row; i++) { + for (j = 0; j < bl->blksize; j++) + ckd_free(bl->ptr[i][j]); + + ckd_free(bl->ptr[i]); + bl->ptr[i] = NULL; + } + if (i == bl->cur_row) { /* NEED THIS! (in case cur_row < 0) */ + for (j = 0; j < bl->cur_row_free; j++) + ckd_free(bl->ptr[i][j]); + + ckd_free(bl->ptr[i]); + bl->ptr[i] = NULL; + } + + bl->n_valid = 0; + bl->cur_row = -1; + bl->cur_row_free = bl->blksize; +} + +void * +blkarray_list_get(blkarray_list_t *list, int32 n) +{ + int32 r, c; + + if (n >= blkarray_list_n_valid(list)) + return NULL; + + r = n / blkarray_list_blksize(list); + c = n - (r * blkarray_list_blksize(list)); + + return blkarray_list_ptr(list, r, c); +} |