format_ogg_vorbis: Clear ogg/vorbis data structures on close
[asterisk/asterisk.git] / formats / format_vox.c
old mode 100755 (executable)
new mode 100644 (file)
index 8753c3b..5a70c34
 /*
- * Asterisk -- A telephony toolkit for Linux.
+ * Asterisk -- An open source telephony toolkit.
  *
- * Flat, binary, ADPCM vox file format.
- * 
- * Copyright (C) 1999, Mark Spencer
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
  *
- * Mark Spencer <markster@linux-support.net>
+ * 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
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
  */
-#include "asterisk/lock.h"
-#include "asterisk/channel.h"
-#include "asterisk/file.h"
-#include "asterisk/logger.h"
-#include "asterisk/sched.h"
-#include "asterisk/module.h"
-#include "asterisk/endian.h"
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-
-#define BUF_SIZE 80            /* 160 samples */
-
-struct ast_filestream {
-       void *reserved[AST_RESERVED_POINTERS];
-       /* This is what a filestream means to us */
-       int fd; /* Descriptor */
-       struct ast_frame fr;                            /* Frame information */
-       char waste[AST_FRIENDLY_OFFSET];        /* Buffer for sending frames, etc */
-       char empty;                                                     /* Empty character */
-       unsigned char buf[BUF_SIZE];    /* Output Buffer */
-       int lasttimeout;
-       struct timeval last;
-       short signal;                                           /* Signal level (file side) */
-       short ssindex;                                          /* Signal ssindex (file side) */
-       unsigned char zero_count;                               /* counter of consecutive zero samples */
-       unsigned char next_flag;
-};
-
-
-AST_MUTEX_DEFINE_STATIC(vox_lock);
-static int glistcnt = 0;
 
-static char *name = "vox";
-static char *desc = "Dialogic VOX (ADPCM) File Format";
-static char *exts = "vox";
+/*! \file
+ *
+ * \brief Flat, binary, ADPCM vox file format.
+ * \arg File name extensions: vox
+ * 
+ * \ingroup formats
+ */
 
-static struct ast_filestream *vox_open(int fd)
-{
-       /* We don't have any header to read or anything really, but
-          if we did, it would go here.  We also might want to check
-          and be sure it's a valid file.  */
-       struct ast_filestream *tmp;
-       if ((tmp = malloc(sizeof(struct ast_filestream)))) {
-               memset(tmp, 0, sizeof(struct ast_filestream));
-               if (ast_mutex_lock(&vox_lock)) {
-                       ast_log(LOG_WARNING, "Unable to lock vox list\n");
-                       free(tmp);
-                       return NULL;
-               }
-               tmp->fd = fd;
-               tmp->fr.data = tmp->buf;
-               tmp->fr.frametype = AST_FRAME_VOICE;
-               tmp->fr.subclass = AST_FORMAT_ADPCM;
-               /* datalen will vary for each frame */
-               tmp->fr.src = name;
-               tmp->fr.mallocd = 0;
-               tmp->lasttimeout = -1;
-               glistcnt++;
-               ast_mutex_unlock(&vox_lock);
-               ast_update_use_count();
-       }
-       return tmp;
-}
+/*** MODULEINFO
+       <support_level>extended</support_level>
+ ***/
+#include "asterisk.h"
 
-static struct ast_filestream *vox_rewrite(int fd, const char *comment)
-{
-       /* We don't have any header to read or anything really, but
-          if we did, it would go here.  We also might want to check
-          and be sure it's a valid file.  */
-       struct ast_filestream *tmp;
-       if ((tmp = malloc(sizeof(struct ast_filestream)))) {
-               memset(tmp, 0, sizeof(struct ast_filestream));
-               if (ast_mutex_lock(&vox_lock)) {
-                       ast_log(LOG_WARNING, "Unable to lock vox list\n");
-                       free(tmp);
-                       return NULL;
-               }
-               tmp->fd = fd;
-               glistcnt++;
-               ast_mutex_unlock(&vox_lock);
-               ast_update_use_count();
-       } else
-               ast_log(LOG_WARNING, "Out of memory\n");
-       return tmp;
-}
+#include "asterisk/mod_format.h"
+#include "asterisk/module.h"
+#include "asterisk/endian.h"
+#include "asterisk/format_cache.h"
 
-static void vox_close(struct ast_filestream *s)
-{
-       if (ast_mutex_lock(&vox_lock)) {
-               ast_log(LOG_WARNING, "Unable to lock vox list\n");
-               return;
-       }
-       glistcnt--;
-       ast_mutex_unlock(&vox_lock);
-       ast_update_use_count();
-       close(s->fd);
-       free(s);
-       s = NULL;
-}
+#define BUF_SIZE       80              /* 80 bytes, 160 samples */
+#define VOX_SAMPLES    160
 
 static struct ast_frame *vox_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_ADPCM;
-       s->fr.offset = AST_FRIENDLY_OFFSET;
-       s->fr.mallocd = 0;
-       s->fr.data = s->buf;
-       if ((res = read(s->fd, s->buf, BUF_SIZE)) < 1) {
+       AST_FRAME_SET_BUFFER(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
+       if ((res = fread(s->fr.data.ptr, 1, s->fr.datalen, s->f)) < 1) {
                if (res)
                        ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
                return NULL;
        }
-       s->fr.samples = res * 2;
+       *whennext = s->fr.samples = res * 2;
        s->fr.datalen = res;
-       *whennext = s->fr.samples;
        return &s->fr;
 }
 
-static int vox_write(struct ast_filestream *fs, struct ast_frame *f)
+static int vox_write(struct ast_filestream *s, 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_ADPCM) {
-               ast_log(LOG_WARNING, "Asked to write non-ADPCM frame (%d)!\n", f->subclass);
-               return -1;
-       }
-       if ((res = write(fs->fd, f->data, f->datalen)) != f->datalen) {
+       if ((res = fwrite(f->data.ptr, 1, f->datalen, s->f)) != f->datalen) {
                        ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno));
                        return -1;
        }
        return 0;
 }
 
-static char *vox_getcomment(struct ast_filestream *s)
+static int vox_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
 {
-       return NULL;
-}
+       off_t offset = 0, min = 0, cur, max, distance;
 
-static int vox_seek(struct ast_filestream *fs, long sample_offset, int whence)
-{
-     off_t offset=0,min,cur,max,distance;
-       
-     min = 0;
-     cur = lseek(fs->fd, 0, SEEK_CUR);
-     max = lseek(fs->fd, 0, SEEK_END);
-     /* have to fudge to frame here, so not fully to sample */
-     distance = sample_offset/2;
-     if(whence == SEEK_SET)
-         offset = distance;
-     else if(whence == SEEK_CUR || whence == SEEK_FORCECUR)
-         offset = distance + cur;
-     else if(whence == SEEK_END)
-         offset = max - distance;
-     if (whence != SEEK_FORCECUR) {
-         offset = (offset > max)?max:offset;
-         offset = (offset < min)?min:offset;
-     }
-     return lseek(fs->fd, offset, SEEK_SET);
+       if ((cur = ftello(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine current position in g719 filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+
+       if (fseeko(fs->f, 0, SEEK_END) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to seek to end of g719 filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+
+       if ((max = ftello(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine max position in g719 filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+
+       /* have to fudge to frame here, so not fully to sample */
+       distance = sample_offset/2;
+       if (whence == SEEK_SET) {
+               offset = distance;
+       } else if (whence == SEEK_CUR || whence == SEEK_FORCECUR) {
+               offset = distance + cur;
+       } else if (whence == SEEK_END) {
+               offset = max - distance;
+       }
+       if (whence != SEEK_FORCECUR) {
+               offset = (offset > max)?max:offset;
+               offset = (offset < min)?min:offset;
+       }
+       return fseeko(fs->f, offset, SEEK_SET);
 }
 
 static int vox_trunc(struct ast_filestream *fs)
 {
-     return ftruncate(fs->fd, lseek(fs->fd,0,SEEK_CUR));
-}
+       int fd;
+       off_t cur;
+
+       if ((fd = fileno(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine file descriptor for vox filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+       if ((cur = ftello(fs->f)) < 0) {
+               ast_log(AST_LOG_WARNING, "Unable to determine current position in vox filestream %p: %s\n", fs, strerror(errno));
+               return -1;
+       }
+       /* Truncate file to current length */
+       return ftruncate(fd, cur);}
 
-static long vox_tell(struct ast_filestream *fs)
+static off_t vox_tell(struct ast_filestream *fs)
 {
      off_t offset;
-     offset = lseek(fs->fd, 0, SEEK_CUR);
+     offset = ftello(fs->f) << 1;
      return offset; 
 }
 
-int load_module()
-{
-       return ast_format_register(name, exts, AST_FORMAT_ADPCM,
-                                                               vox_open,
-                                                               vox_rewrite,
-                                                               vox_write,
-                                                               vox_seek,
-                                                               vox_trunc,
-                                                               vox_tell,
-                                                               vox_read,
-                                                               vox_close,
-                                                               vox_getcomment);
-                                                               
-                                                               
-}
-
-int unload_module()
-{
-       return ast_format_unregister(name);
-}      
+static struct ast_format_def vox_f = {
+       .name = "vox",
+       .exts = "vox",
+       .write = vox_write,
+       .seek = vox_seek,
+       .trunc = vox_trunc,
+       .tell = vox_tell,
+       .read = vox_read,
+       .buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
+};
 
-int usecount()
+static int load_module(void)
 {
-       int res;
-       if (ast_mutex_lock(&vox_lock)) {
-               ast_log(LOG_WARNING, "Unable to lock vox list\n");
-               return -1;
-       }
-       res = glistcnt;
-       ast_mutex_unlock(&vox_lock);
-       return res;
+       vox_f.format = ast_format_adpcm;
+       if (ast_format_def_register(&vox_f))
+               return AST_MODULE_LOAD_DECLINE;
+       return AST_MODULE_LOAD_SUCCESS;
 }
 
-char *description()
+static int unload_module(void)
 {
-       return desc;
+       return ast_format_def_unregister(vox_f.name);
 }
 
-
-char *key()
-{
-       return ASTERISK_GPL_KEY;
-}
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Dialogic VOX (ADPCM) File Format",
+       .support_level = AST_MODULE_SUPPORT_EXTENDED,
+       .load = load_module,
+       .unload = unload_module,
+       .load_pri = AST_MODPRI_APP_DEPEND
+);