diff options
Diffstat (limited to 'trunk/formats/format_sln16.c')
-rw-r--r-- | trunk/formats/format_sln16.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/trunk/formats/format_sln16.c b/trunk/formats/format_sln16.c deleted file mode 100644 index 50349f2dd..000000000 --- a/trunk/formats/format_sln16.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * Asterisk -- An open source telephony toolkit. - * - * Copyright (C) 1999 - 2008, Anthony Minessale and Digium, Inc. - * Anthony Minessale (anthmct@yahoo.com) - * Kevin P. Fleming <kpfleming@digium.com> - * - * See http://www.asterisk.org for more information about - * the Asterisk project. Please do not directly contact - * any of the maintainers of this project for assistance; - * the project provides a web site, mailing lists and IRC - * channels for your use. - * - * This program is free software, distributed under the terms of - * the GNU General Public License Version 2. See the LICENSE file - * at the top of the source tree. - */ - -/*! \file - * - * \brief RAW SLINEAR 16 Format - * \arg File name extensions: sln16 - * \ingroup formats - */ - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include "asterisk/mod_format.h" -#include "asterisk/module.h" -#include "asterisk/endian.h" - -#define BUF_SIZE 640 /* 640 bytes, 320 samples */ -#define SLIN_SAMPLES 320 - -static struct ast_frame *slinear_read(struct ast_filestream *s, int *whennext) -{ - int res; - /* Send a frame from the file to the appropriate channel */ - - s->fr.frametype = AST_FRAME_VOICE; - s->fr.subclass = AST_FORMAT_SLINEAR16; - s->fr.mallocd = 0; - AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE); - if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) < 1) { - if (res) - ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno)); - return NULL; - } - *whennext = s->fr.samples = res/2; - s->fr.datalen = res; - return &s->fr; -} - -static int slinear_write(struct ast_filestream *fs, struct ast_frame *f) -{ - int res; - - if (f->frametype != AST_FRAME_VOICE) { - ast_log(LOG_WARNING, "Asked to write non-voice frame!\n"); - return -1; - } - if (f->subclass != AST_FORMAT_SLINEAR16) { - ast_log(LOG_WARNING, "Asked to write non-slinear16 frame (%d)!\n", f->subclass); - return -1; - } - if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) { - ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno)); - return -1; - } - return 0; -} - -static int slinear_seek(struct ast_filestream *fs, off_t sample_offset, int whence) -{ - off_t offset = 0, min = 0, cur, max; - - sample_offset <<= 1; - - cur = ftello(fs->f); - - fseeko(fs->f, 0, SEEK_END); - - max = ftello(fs->f); - - if (whence == SEEK_SET) - offset = sample_offset; - else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) - offset = sample_offset + cur; - else if (whence == SEEK_END) - offset = max - sample_offset; - - if (whence != SEEK_FORCECUR) - offset = (offset > max) ? max : offset; - - /* always protect against seeking past begining. */ - offset = (offset < min) ? min : offset; - - return fseeko(fs->f, offset, SEEK_SET); -} - -static int slinear_trunc(struct ast_filestream *fs) -{ - return ftruncate(fileno(fs->f), ftello(fs->f)); -} - -static off_t slinear_tell(struct ast_filestream *fs) -{ - return ftello(fs->f) / 2; -} - -static const struct ast_format slin_f = { - .name = "sln16", - .exts = "sln16", - .format = AST_FORMAT_SLINEAR16, - .write = slinear_write, - .seek = slinear_seek, - .trunc = slinear_trunc, - .tell = slinear_tell, - .read = slinear_read, - .buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET, -}; - -static int load_module(void) -{ - if (ast_format_register(&slin_f)) - return AST_MODULE_LOAD_FAILURE; - - return AST_MODULE_LOAD_SUCCESS; -} - -static int unload_module(void) -{ - return ast_format_unregister(slin_f.name); -} - -AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Raw Signed Linear 16KHz Audio support (SLN16)"); |