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asterisk
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Largely simplify format handlers (for file copy etc.)

Browse Source 
collecting common functions in a single place and removing
them from the individual handlers.
The full description is on mantis,
http://bugs.digium.com/view.php?id=6375
and only the ogg_vorbis handler needs to be converted to
the new structure.

As a result of this change, format_au.c and format_pcm_alaw.c
should go away (in a separate commit) as their functionality
(trivial) has been merged in another file.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@17243 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.4
Luigi Rizzo 19 years ago
parent ec67c650ad
commit 4beb6deeaa
18 changed files with 1736 additions and 2778 deletions
Show Stats Download Patch File Download Diff File

1128
file.c
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File diff suppressed because it is too large Load Diff

5
formats/Makefile
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@ -13,6 +13,11 @@
MODS:=$(patsubst %.c,%.so,$(wildcard format_*.c))
MODS:=$(filter-out format_pcm_alaw.so,$(MODS))
MODS:=$(filter-out format_au.so,$(MODS))
# merged. format_pcm_alaw.so
# merged. format_au.so
#
# OGG/Vorbis format
#

154
formats/format_au.c
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@ -44,7 +44,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/endian.h"
#define BUF_SIZE 160
#define BUF_SIZE 160 /* samples and 1 byte per sample */
#define AU_HEADER_SIZE 24
#define AU_HEADER(var) u_int32_t var[6]
@ -58,26 +58,6 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#define AU_ENC_8BIT_ULAW 1
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_channel *owner;
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
short buf[BUF_SIZE];
};
AST_MUTEX_DEFINE_STATIC(au_lock);
static int localusecnt = 0;
static char *name = "au";
static char *desc = "Sun Microsystems AU format (signed linear)";
static char *exts = "au";
#define AU_MAGIC 0x2e736e64
#if __BYTE_ORDER == __BIG_ENDIAN
#define htoll(b) (b)
@ -130,7 +110,7 @@ static int check_header(FILE *f)
return -1;
}
sample_rate = ltohl(header[AU_HDR_SAMPLE_RATE_OFF]);
if (sample_rate != 8000) {
if (sample_rate != DEFAULT_SAMPLE_RATE) {
ast_log(LOG_WARNING, "Sample rate can only be 8000 not %d\n", sample_rate);
return -1;
}
@ -189,7 +169,7 @@ static int write_header(FILE *f)
header[AU_HDR_HDR_SIZE_OFF] = htoll(AU_HEADER_SIZE);
header[AU_HDR_DATA_SIZE_OFF] = 0;
header[AU_HDR_ENCODING_OFF] = htoll(AU_ENC_8BIT_ULAW);
header[AU_HDR_SAMPLE_RATE_OFF] = htoll(8000);
header[AU_HDR_SAMPLE_RATE_OFF] = htoll(DEFAULT_SAMPLE_RATE);
header[AU_HDR_CHANNELS_OFF] = htoll(1);
/* Write an au header, ignoring sizes which will be filled in later */
@ -201,97 +181,36 @@ static int write_header(FILE *f)
return 0;
}
static struct ast_filestream *au_open(FILE *f)
{
struct ast_filestream *tmp;
if (!(tmp = malloc(sizeof(struct ast_filestream)))) {
ast_log(LOG_ERROR, "Out of memory\n");
return NULL;
}
memset(tmp, 0, sizeof(struct ast_filestream));
if (check_header(f) < 0) {
free(tmp);
return NULL;
}
if (ast_mutex_lock(&au_lock)) {
ast_log(LOG_WARNING, "Unable to lock au count\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->buf;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_ULAW;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
localusecnt++;
ast_mutex_unlock(&au_lock);
ast_update_use_count();
return tmp;
}
static struct ast_filestream *au_rewrite(FILE *f, const char *comment)
static int au_open(struct ast_filestream *s)
{
struct ast_filestream *tmp;
if ((tmp = malloc(sizeof(struct ast_filestream))) == NULL) {
ast_log(LOG_ERROR, "Out of memory\n");
return NULL;
}
memset(tmp, 0, sizeof(struct ast_filestream));
if (write_header(f)) {
free(tmp);
return NULL;
}
if (ast_mutex_lock(&au_lock)) {
ast_log(LOG_WARNING, "Unable to lock au count\n");
free(tmp);
return NULL;
}
tmp->f = f;
localusecnt++;
ast_mutex_unlock(&au_lock);
ast_update_use_count();
return tmp;
if (check_header(s->f) < 0)
return -1;
return 0;
}
static void au_close(struct ast_filestream *s)
static int au_rewrite(struct ast_filestream *s, const char *comment)
{
if (ast_mutex_lock(&au_lock)) {
ast_log(LOG_WARNING, "Unable to lock au count\n");
return;
}
localusecnt--;
ast_mutex_unlock(&au_lock);
ast_update_use_count();
fclose(s->f);
free(s);
if (write_header(s->f))
return -1;
return 0;
}
static struct ast_frame *au_read(struct ast_filestream *s, int *whennext)
{
int res;
int delay;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_ULAW;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.mallocd = 0;
s->fr.data = s->buf;
if ((res = fread(s->buf, 1, BUF_SIZE, s->f)) < 1) {
FR_SET_BUF(&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;
}
s->fr.samples = res;
*whennext = s->fr.samples = res;
s->fr.datalen = res;
delay = s->fr.samples;
*whennext = delay;
return &s->fr;
}
@ -308,8 +227,8 @@ static int au_write(struct ast_filestream *fs, struct ast_frame *f)
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;
ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n", res, f->datalen, strerror(errno));
return -1;
}
update_header(fs->f);
return 0;
@ -348,44 +267,45 @@ static int au_trunc(struct ast_filestream *fs)
static off_t au_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
off_t offset = ftello(fs->f);
return offset - AU_HEADER_SIZE;
}
static char *au_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format au_f = {
.name = "au",
.exts = "au",
.format = AST_FORMAT_ULAW,
.open = au_open,
.rewrite = au_rewrite,
.write = au_write,
.seek = au_seek,
.trunc = au_trunc,
.tell = au_tell,
.read = au_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET, /* this many shorts */
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_ULAW,
au_open,
au_rewrite,
au_write,
au_seek,
au_trunc,
au_tell,
au_read,
au_close,
au_getcomment);
return ast_format_register(&au_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(au_f.name);
}
int usecount()
{
return localusecnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Sun Microsystems AU format (signed linear)";
}
char *key()

160
formats/format_g723.c
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@ -47,81 +47,13 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#define G723_MAX_SIZE 1024
struct ast_filestream {
/* First entry MUST be reserved for the channel type */
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_filestream *next;
struct ast_frame *fr; /* Frame representation of buf */
struct timeval orig; /* Original frame time */
char buf[G723_MAX_SIZE + AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
};
AST_MUTEX_DEFINE_STATIC(g723_lock);
static int glistcnt = 0;
static char *name = "g723sf";
static char *desc = "G.723.1 Simple Timestamp File Format";
static char *exts = "g723|g723sf";
static struct ast_filestream *g723_open(FILE *f)
{
/* 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(&g723_lock)) {
ast_log(LOG_WARNING, "Unable to lock g723 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr = (struct ast_frame *)tmp->buf;
tmp->fr->data = tmp->buf + sizeof(struct ast_frame);
tmp->fr->frametype = AST_FRAME_VOICE;
tmp->fr->subclass = AST_FORMAT_G723_1;
/* datalen will vary for each frame */
tmp->fr->src = name;
tmp->fr->mallocd = 0;
glistcnt++;
ast_mutex_unlock(&g723_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *g723_rewrite(FILE *f, 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(&g723_lock)) {
ast_log(LOG_WARNING, "Unable to lock g723 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&g723_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static struct ast_frame *g723_read(struct ast_filestream *s, int *whennext)
{
unsigned short size;
int res;
int delay;
/* Read the delay for the next packet, and schedule again if necessary */
/* XXX is this ignored ? */
if (fread(&delay, 1, 4, s->f) == 4)
delay = ntohl(delay);
else
@ -133,7 +65,7 @@ static struct ast_frame *g723_read(struct ast_filestream *s, int *whennext)
}
/* Looks like we have a frame to read from here */
size = ntohs(size);
if (size > G723_MAX_SIZE - sizeof(struct ast_frame)) {
if (size > G723_MAX_SIZE) {
ast_log(LOG_WARNING, "Size %d is invalid\n", size);
/* The file is apparently no longer any good, as we
shouldn't ever get frames even close to this
@ -141,50 +73,24 @@ static struct ast_frame *g723_read(struct ast_filestream *s, int *whennext)
return NULL;
}
/* Read the data into the buffer */
s->fr->offset = AST_FRIENDLY_OFFSET;
s->fr->datalen = size;
s->fr->data = s->buf + sizeof(struct ast_frame) + AST_FRIENDLY_OFFSET;
if ((res = fread(s->fr->data, 1, size, s->f)) != size) {
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_G723_1;
s->fr.mallocd = 0;
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, size);
if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != size) {
ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size, strerror(errno));
return NULL;
}
#if 0
/* Average out frames <= 50 ms */
if (delay < 50)
s->fr->timelen = 30;
else
s->fr->timelen = delay;
#else
s->fr->samples = 240;
#endif
*whennext = s->fr->samples;
return s->fr;
*whennext = s->fr.samples = 240;
return &s->fr;
}
static void g723_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&g723_lock)) {
ast_log(LOG_WARNING, "Unable to lock g723 list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&g723_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
}
static int g723_write(struct ast_filestream *fs, struct ast_frame *f)
static int g723_write(struct ast_filestream *s, struct ast_frame *f)
{
u_int32_t delay;
u_int16_t size;
int res;
if (fs->fr) {
ast_log(LOG_WARNING, "Asked to write on a read stream??\n");
return -1;
}
/* XXX there used to be a check s->fr means a read stream */
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
@ -198,16 +104,16 @@ static int g723_write(struct ast_filestream *fs, struct ast_frame *f)
ast_log(LOG_WARNING, "Short frame ignored (%d bytes long?)\n", f->datalen);
return 0;
}
if ((res = fwrite(&delay, 1, 4, fs->f)) != 4) {
if ((res = fwrite(&delay, 1, 4, s->f)) != 4) {
ast_log(LOG_WARNING, "Unable to write delay: res=%d (%s)\n", res, strerror(errno));
return -1;
}
size = htons(f->datalen);
if ((res = fwrite(&size, 1, 2, fs->f)) != 2) {
if ((res = fwrite(&size, 1, 2, s->f)) != 2) {
ast_log(LOG_WARNING, "Unable to write size: res=%d (%s)\n", res, strerror(errno));
return -1;
}
if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) {
if ((res = fwrite(f->data, 1, f->datalen, s->f)) != f->datalen) {
ast_log(LOG_WARNING, "Unable to write frame: res=%d (%s)\n", res, strerror(errno));
return -1;
}
@ -232,43 +138,41 @@ static off_t g723_tell(struct ast_filestream *fs)
return -1;
}
static char *g723_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format g723_1_f = {
.name = "g723sf",
.exts = "g723|g723sf",
.format = AST_FORMAT_G723_1,
.write = g723_write,
.seek = g723_seek,
.trunc = g723_trunc,
.tell = g723_tell,
.read = g723_read,
.buf_size = G723_MAX_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_G723_1,
g723_open,
g723_rewrite,
g723_write,
g723_seek,
g723_trunc,
g723_tell,
g723_read,
g723_close,
g723_getcomment);
return ast_format_register(&g723_1_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(g723_1_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "G.723.1 Simple Timestamp File Format";
}
char *key()
{
return ASTERISK_GPL_KEY;

456
formats/format_g726.c
Unescape View File

@ -58,6 +58,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* We can only read/write chunks of FRAME_TIME ms G.726 data */
#define FRAME_TIME 10 /* 10 ms size */
#define BUF_SIZE (5*FRAME_TIME) /* max frame size in bytes ? */
/* Frame sizes in bytes */
static int frame_size[4] = {
FRAME_TIME * 5,
@ -66,293 +67,79 @@ static int frame_size[4] = {
FRAME_TIME * 2
};
struct ast_filestream {
/* Do not place anything before "reserved" */
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* Open file descriptor */
int rate; /* RATE_* defines */
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char g726[FRAME_TIME * 5]; /* G.726 encoded voice */
struct g726_desc {
int rate; /* RATE_* defines */
};
AST_MUTEX_DEFINE_STATIC(g726_lock);
static int glistcnt = 0;
static char *desc = "Raw G.726 (16/24/32/40kbps) data";
static char *name40 = "g726-40";
static char *name32 = "g726-32";
static char *name24 = "g726-24";
static char *name16 = "g726-16";
static char *exts40 = "g726-40";
static char *exts32 = "g726-32";
static char *exts24 = "g726-24";
static char *exts16 = "g726-16";
/*
* Rate dependant format functions (open, rewrite)
*/
static struct ast_filestream *g726_40_open(FILE *f)
static int g726_open(struct ast_filestream *tmp, int rate)
{
/* 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_40;
tmp->fr.data = tmp->g726;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_G726;
/* datalen will vary for each frame */
tmp->fr.src = name40;
tmp->fr.mallocd = 0;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
}
return tmp;
struct g726_desc *s = (struct g726_desc *)tmp->private;
s->rate = rate;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - s->rate * 8);
return 0;
}
static struct ast_filestream *g726_32_open(FILE *f)
static int g726_40_open(struct ast_filestream *s)
{
/* 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_32;
tmp->fr.data = tmp->g726;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_G726;
/* datalen will vary for each frame */
tmp->fr.src = name32;
tmp->fr.mallocd = 0;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
}
return tmp;
return g726_open(s, RATE_40);
}
static struct ast_filestream *g726_24_open(FILE *f)
static int g726_32_open(struct ast_filestream *s)
{
/* 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_24;
tmp->fr.data = tmp->g726;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_G726;
/* datalen will vary for each frame */
tmp->fr.src = name24;
tmp->fr.mallocd = 0;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
}
return tmp;
return g726_open(s, RATE_32);
}
static struct ast_filestream *g726_16_open(FILE *f)
static int g726_24_open(struct ast_filestream *s)
{
/* 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_16;
tmp->fr.data = tmp->g726;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_G726;
/* datalen will vary for each frame */
tmp->fr.src = name16;
tmp->fr.mallocd = 0;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
}
return tmp;
return g726_open(s, RATE_24);
}
static struct ast_filestream *g726_40_rewrite(FILE *f, const char *comment)
static int g726_16_open(struct ast_filestream *s)
{
/* 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_40;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
return g726_open(s, RATE_16);
}
static struct ast_filestream *g726_32_rewrite(FILE *f, const char *comment)
static int g726_40_rewrite(struct ast_filestream *s, 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_32;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
return g726_open(s, RATE_40);
}
static struct ast_filestream *g726_24_rewrite(FILE *f, const char *comment)
static int g726_32_rewrite(struct ast_filestream *s, 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_24;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
return g726_open(s, RATE_32);
}
static struct ast_filestream *g726_16_rewrite(FILE *f, const char *comment)
static int g726_24_rewrite(struct ast_filestream *s, 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(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->rate = RATE_16;
glistcnt++;
if (option_debug)
ast_log(LOG_DEBUG, "Created filestream G.726-%dk.\n",
40 - tmp->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
return g726_open(s, RATE_24);
}
/*
* Rate independent format functions (close, read, write)
*/
static void g726_close(struct ast_filestream *s)
static int g726_16_rewrite(struct ast_filestream *s, const char *comment)
{
if (ast_mutex_lock(&g726_lock)) {
ast_log(LOG_WARNING, "Unable to lock g726 list.\n");
return;
}
glistcnt--;
if (option_debug)
ast_log(LOG_DEBUG, "Closed filestream G.726-%dk.\n", 40 - s->rate * 8);
ast_mutex_unlock(&g726_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
return g726_open(s, RATE_16);
}
/*
* Rate independent format functions (read, write)
*/
static struct ast_frame *g726_read(struct ast_filestream *s, int *whennext)
{
int res;
struct g726_desc *fs = (struct g726_desc *)s->private;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_G726;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.samples = 8 * FRAME_TIME;
s->fr.datalen = frame_size[s->rate];
s->fr.mallocd = 0;
s->fr.data = s->g726;
if ((res = fread(s->g726, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, frame_size[fs->rate]);
s->fr.samples = 8 * FRAME_TIME;
if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
@ -361,9 +148,11 @@ static struct ast_frame *g726_read(struct ast_filestream *s, int *whennext)
return &s->fr;
}
static int g726_write(struct ast_filestream *fs, struct ast_frame *f)
static int g726_write(struct ast_filestream *s, struct ast_frame *f)
{
int res;
struct g726_desc *fs = (struct g726_desc *)s->private;
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
@ -378,19 +167,14 @@ static int g726_write(struct ast_filestream *fs, struct ast_frame *f)
f->datalen, frame_size[fs->rate]);
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, frame_size[fs->rate], strerror(errno));
if ((res = fwrite(f->data, 1, f->datalen, s->f)) != f->datalen) {
ast_log(LOG_WARNING, "Bad write (%d/%d): %s\n",
res, frame_size[fs->rate], strerror(errno));
return -1;
}
return 0;
}
static char *g726_getcomment(struct ast_filestream *s)
{
return NULL;
}
static int g726_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
return -1;
@ -406,107 +190,107 @@ static off_t g726_tell(struct ast_filestream *fs)
return -1;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format f[] = {
{
.name = "g726-40",
.exts = "g726-40",
.format = AST_FORMAT_G726,
.open = g726_40_open,
.rewrite = g726_40_rewrite,
.write = g726_write,
.seek = g726_seek,
.trunc = g726_trunc,
.tell = g726_tell,
.read = g726_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct g726_desc),
.lockp = &me,
},
{
.name = "g726-32",
.exts = "g726-32",
.format = AST_FORMAT_G726,
.open = g726_32_open,
.rewrite = g726_32_rewrite,
.write = g726_write,
.seek = g726_seek,
.trunc = g726_trunc,
.tell = g726_tell,
.read = g726_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct g726_desc),
.lockp = &me,
},
{
.name = "g726-24",
.exts = "g726-24",
.format = AST_FORMAT_G726,
.open = g726_24_open,
.rewrite = g726_24_rewrite,
.write = g726_write,
.seek = g726_seek,
.trunc = g726_trunc,
.tell = g726_tell,
.read = g726_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct g726_desc),
.lockp = &me,
},
{
.name = "g726-16",
.exts = "g726-16",
.format = AST_FORMAT_G726,
.open = g726_16_open,
.rewrite = g726_16_rewrite,
.write = g726_write,
.seek = g726_seek,
.trunc = g726_trunc,
.tell = g726_tell,
.read = g726_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct g726_desc),
.lockp = &me,
},
{ .format = 0 } /* terminator */
};
/*
* Module interface (load_module, unload_module, usecount, description, key)
*/
int load_module()
{
int res;
int i;
res = ast_format_register(name40, exts40, AST_FORMAT_G726,
g726_40_open,
g726_40_rewrite,
g726_write,
g726_seek,
g726_trunc,
g726_tell,
g726_read,
g726_close,
g726_getcomment);
if (res) {
ast_log(LOG_WARNING, "Failed to register format %s.\n", name40);
return(-1);
}
res = ast_format_register(name32, exts32, AST_FORMAT_G726,
g726_32_open,
g726_32_rewrite,
g726_write,
g726_seek,
g726_trunc,
g726_tell,
g726_read,
g726_close,
g726_getcomment);
if (res) {
ast_log(LOG_WARNING, "Failed to register format %s.\n", name32);
return(-1);
}
res = ast_format_register(name24, exts24, AST_FORMAT_G726,
g726_24_open,
g726_24_rewrite,
g726_write,
g726_seek,
g726_trunc,
g726_tell,
g726_read,
g726_close,
g726_getcomment);
if (res) {
ast_log(LOG_WARNING, "Failed to register format %s.\n", name24);
return(-1);
}
res = ast_format_register(name16, exts16, AST_FORMAT_G726,
g726_16_open,
g726_16_rewrite,
g726_write,
g726_seek,
g726_trunc,
g726_tell,
g726_read,
g726_close,
g726_getcomment);
if (res) {
ast_log(LOG_WARNING, "Failed to register format %s.\n", name16);
return(-1);
for (i = 0; f[i].format ; i++) {
if (ast_format_register(&f[i])) { /* errors are fatal */
ast_log(LOG_WARNING, "Failed to register format %s.\n", f[i].name);
return -1;
}
}
return(0);
return 0;
}
int unload_module()
{
int res;
int i;
res = ast_format_unregister(name16);
if (res) {
ast_log(LOG_WARNING, "Failed to unregister format %s.\n", name16);
return(-1);
}
res = ast_format_unregister(name24);
if (res) {
ast_log(LOG_WARNING, "Failed to unregister format %s.\n", name24);
return(-1);
}
res = ast_format_unregister(name32);
if (res) {
ast_log(LOG_WARNING, "Failed to unregister format %s.\n", name32);
return(-1);
}
res = ast_format_unregister(name40);
if (res) {
ast_log(LOG_WARNING, "Failed to unregister format %s.\n", name40);
return(-1);
for (i = 0; f[i].format ; i++) {
if (ast_format_unregister(f[i].name))
ast_log(LOG_WARNING, "Failed to unregister format %s.\n", f[i].name);
}
return(0);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw G.726 (16/24/32/40kbps) data";
}
char *key()

141
formats/format_g729.c
Unescape View File

@ -51,88 +51,8 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Portions of the conversion code are by guido@sienanet.it */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char g729[20]; /* Two Real G729 Frames */
};
AST_MUTEX_DEFINE_STATIC(g729_lock);
static int glistcnt = 0;
static char *name = "g729";
static char *desc = "Raw G729 data";
static char *exts = "g729";
static struct ast_filestream *g729_open(FILE *f)
{
/* 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(&g729_lock)) {
ast_log(LOG_WARNING, "Unable to lock g729 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->g729;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_G729A;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&g729_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *g729_rewrite(FILE *f, 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(&g729_lock)) {
ast_log(LOG_WARNING, "Unable to lock g729 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&g729_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static void g729_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&g729_lock)) {
ast_log(LOG_WARNING, "Unable to lock g729 list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&g729_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
}
#define BUF_SIZE 20 /* two G729 frames */
#define G729A_SAMPLES 160
static struct ast_frame *g729_read(struct ast_filestream *s, int *whennext)
{
@ -140,13 +60,11 @@ static struct ast_frame *g729_read(struct ast_filestream *s, int *whennext)
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_G729A;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.samples = 160;
s->fr.datalen = 20;
s->fr.mallocd = 0;
s->fr.data = s->g729;
if ((res = fread(s->g729, 1, 20, s->f)) != 20) {
if (res && (res != 10))
s->fr.samples = G729A_SAMPLES;
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, BUF_SIZE);
if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
if (res && (res != 10)) /* XXX what for ? */
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
}
@ -176,11 +94,6 @@ static int g729_write(struct ast_filestream *fs, struct ast_frame *f)
return 0;
}
static char *g729_getcomment(struct ast_filestream *s)
{
return NULL;
}
static int g729_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
long bytes;
@ -190,7 +103,7 @@ static int g729_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
fseeko(fs->f, 0, SEEK_END);
max = ftello(fs->f);
bytes = 20 * (sample_offset / 160);
bytes = BUF_SIZE * (sample_offset / G729A_SAMPLES);
if (whence == SEEK_SET)
offset = bytes;
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
@ -217,43 +130,45 @@ static int g729_trunc(struct ast_filestream *fs)
static off_t g729_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
return (offset/20)*160;
off_t offset = ftello(fs->f);
return (offset/BUF_SIZE)*G729A_SAMPLES;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format g729_f = {
.name = "g729",
.exts = "g729",
.format = AST_FORMAT_G729A,
.write = g729_write,
.seek = g729_seek,
.trunc = g729_trunc,
.tell = g729_tell,
.read = g729_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_G729A,
g729_open,
g729_rewrite,
g729_write,
g729_seek,
g729_trunc,
g729_tell,
g729_read,
g729_close,
g729_getcomment);
return ast_format_register(&g729_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(g729_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw G729 data";
}
char *key()
{
return ASTERISK_GPL_KEY;

151
formats/format_gsm.c
Unescape View File

@ -50,6 +50,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Portions of the conversion code are by guido@sienanet.it */
#define GSM_FRAME_SIZE 33
#define GSM_SAMPLES 160
/* silent gsm frame */
/* begin binary data: */
char gsm_silence[] = /* 33 */
@ -58,111 +61,28 @@ char gsm_silence[] = /* 33 */
,0x92,0x49,0x24};
/* end binary data. size = 33 bytes */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char gsm[66]; /* Two Real GSM Frames */
};
AST_MUTEX_DEFINE_STATIC(gsm_lock);
static int glistcnt = 0;
static char *name = "gsm";
static char *desc = "Raw GSM data";
static char *exts = "gsm";
static struct ast_filestream *gsm_open(FILE *f)
{
/* 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(&gsm_lock)) {
ast_log(LOG_WARNING, "Unable to lock gsm list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->gsm;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_GSM;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&gsm_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *gsm_rewrite(FILE *f, 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(&gsm_lock)) {
ast_log(LOG_WARNING, "Unable to lock gsm list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&gsm_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static void gsm_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&gsm_lock)) {
ast_log(LOG_WARNING, "Unable to lock gsm list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&gsm_lock);
ast_update_use_count();
fclose(s->f);
free(s);
}
static struct ast_frame *gsm_read(struct ast_filestream *s, int *whennext)
{
int res;
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_GSM;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.samples = 160;
s->fr.datalen = 33;
FR_SET_BUF(&(s->fr), s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE)
s->fr.mallocd = 0;
s->fr.data = s->gsm;
if ((res = fread(s->gsm, 1, 33, s->f)) != 33) {
if ((res = fread(s->fr.data, 1, GSM_FRAME_SIZE, s->f)) != GSM_FRAME_SIZE) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
}
*whennext = 160;
*whennext = s->fr.samples = GSM_SAMPLES;
return &s->fr;
}
static int gsm_write(struct ast_filestream *fs, struct ast_frame *f)
{
int res;
unsigned char gsm[66];
unsigned char gsm[2*GSM_FRAME_SIZE];
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
@ -176,14 +96,14 @@ static int gsm_write(struct ast_filestream *fs, struct ast_frame *f)
int len=0;
while(len < f->datalen) {
conv65(f->data + len, gsm);
if ((res = fwrite(gsm, 1, 66, fs->f)) != 66) {
if ((res = fwrite(gsm, 1, 2*GSM_FRAME_SIZE, fs->f)) != 2*GSM_FRAME_SIZE) {
ast_log(LOG_WARNING, "Bad write (%d/66): %s\n", res, strerror(errno));
return -1;
}
len += 65;
}
} else {
if (f->datalen % 33) {
if (f->datalen % GSM_FRAME_SIZE) {
ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 33\n", f->datalen);
return -1;
}
@ -204,7 +124,7 @@ static int gsm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
fseeko(fs->f, 0, SEEK_END);
max = ftello(fs->f);
/* have to fudge to frame here, so not fully to sample */
distance = (sample_offset/160) * 33;
distance = (sample_offset/GSM_SAMPLES) * GSM_FRAME_SIZE;
if(whence == SEEK_SET)
offset = distance;
else if(whence == SEEK_CUR || whence == SEEK_FORCECUR)
@ -218,8 +138,8 @@ static int gsm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
} else if (offset > max) {
int i;
fseeko(fs->f, 0, SEEK_END);
for (i=0; i< (offset - max) / 33; i++) {
fwrite(gsm_silence, 1, 33, fs->f);
for (i=0; i< (offset - max) / GSM_FRAME_SIZE; i++) {
fwrite(gsm_silence, 1, GSM_FRAME_SIZE, fs->f);
}
}
return fseeko(fs->f, offset, SEEK_SET);
@ -232,48 +152,45 @@ static int gsm_trunc(struct ast_filestream *fs)
static off_t gsm_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
return (offset/33)*160;
off_t offset = ftello(fs->f);
return (offset/GSM_FRAME_SIZE)*GSM_SAMPLES;
}
static char *gsm_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format gsm_f = {
.name = "gsm",
.exts = "gsm",
.format = AST_FORMAT_GSM,
.write = gsm_write,
.seek = gsm_seek,
.trunc = gsm_trunc,
.tell = gsm_tell,
.read = gsm_read,
.buf_size = 2*GSM_FRAME_SIZE + AST_FRIENDLY_OFFSET, /* 2 gsm frames */
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_GSM,
gsm_open,
gsm_rewrite,
gsm_write,
gsm_seek,
gsm_trunc,
gsm_tell,
gsm_read,
gsm_close,
gsm_getcomment);
return ast_format_register(&gsm_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(gsm_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw GSM data";
}
char *key()
{
return ASTERISK_GPL_KEY;

167
formats/format_h263.c
Unescape View File

@ -48,133 +48,60 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Portions of the conversion code are by guido@sienanet.it */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
#define BUF_SIZE 4096 /* Two Real h263 Frames */
struct h263_desc {
unsigned int lastts;
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char h263[4096]; /* Two Real h263 Frames */
};
AST_MUTEX_DEFINE_STATIC(h263_lock);
static int glistcnt = 0;
static char *name = "h263";
static char *desc = "Raw h263 data";
static char *exts = "h263";
static struct ast_filestream *h263_open(FILE *f)
static int h263_open(struct ast_filestream *s)
{
/* 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;
unsigned int ts;
int res;
if ((res = fread(&ts, 1, sizeof(ts), f)) < sizeof(ts)) {
ast_log(LOG_WARNING, "Empty file!\n");
return NULL;
}
if ((tmp = malloc(sizeof(struct ast_filestream)))) {
memset(tmp, 0, sizeof(struct ast_filestream));
if (ast_mutex_lock(&h263_lock)) {
ast_log(LOG_WARNING, "Unable to lock h263 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->h263;
tmp->fr.frametype = AST_FRAME_VIDEO;
tmp->fr.subclass = AST_FORMAT_H263;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&h263_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *h263_rewrite(FILE *f, 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(&h263_lock)) {
ast_log(LOG_WARNING, "Unable to lock h263 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&h263_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static void h263_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&h263_lock)) {
ast_log(LOG_WARNING, "Unable to lock h263 list\n");
return;
if ((res = fread(&ts, 1, sizeof(ts), s->f)) < sizeof(ts)) {
ast_log(LOG_WARNING, "Empty file!\n");
return -1;
}
glistcnt--;
ast_mutex_unlock(&h263_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
return 0;
}
static struct ast_frame *h263_read(struct ast_filestream *s, int *whennext)
{
int res;
int mark=0;
int mark;
unsigned short len;
unsigned int ts;
struct h263_desc *fs = (struct h263_desc *)s->private;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VIDEO;
s->fr.subclass = AST_FORMAT_H263;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.mallocd = 0;
s->fr.data = s->h263;
if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) {
if ((res = fread(&len, 1, sizeof(len), s->f)) < 1)
return NULL;
}
len = ntohs(len);
if (len & 0x8000) {
mark = 1;
}
mark = (len & 0x8000) ? 1 : 0;
len &= 0x7fff;
if (len > sizeof(s->h263)) {
if (len > BUF_SIZE) {
ast_log(LOG_WARNING, "Length %d is too long\n", len);
len = BUF_SIZE; /* XXX truncate ? */
}
if ((res = fread(s->h263, 1, len, s->f)) != len) {
s->fr.frametype = AST_FRAME_VIDEO;
s->fr.subclass = AST_FORMAT_H263;
s->fr.mallocd = 0;
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len);
if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
}
s->fr.samples = s->lastts;
s->fr.samples = fs->lastts; /* XXX what ? */
s->fr.datalen = len;
s->fr.subclass |= mark;
s->fr.delivery.tv_sec = 0;
s->fr.delivery.tv_usec = 0;
if ((res = fread(&ts, 1, sizeof(ts), s->f)) == sizeof(ts)) {
s->lastts = ntohl(ts);
*whennext = s->lastts * 4/45;
fs->lastts = ntohl(ts);
*whennext = fs->lastts * 4/45;
} else
*whennext = 0;
return &s->fr;
@ -216,11 +143,6 @@ static int h263_write(struct ast_filestream *fs, struct ast_frame *f)
return 0;
}
static char *h263_getcomment(struct ast_filestream *s)
{
return NULL;
}
static int h263_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
/* No way Jose */
@ -237,44 +159,47 @@ static int h263_trunc(struct ast_filestream *fs)
static off_t h263_tell(struct ast_filestream *fs)
{
/* XXX This is totally bogus XXX */
off_t offset;
offset = ftello(fs->f);
return (offset/20)*160;
off_t offset = ftello(fs->f);
return offset; /* XXX totally bogus, needs fixing */
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format h263_f = {
.name = "h263",
.exts = "h264",
.format = AST_FORMAT_H263,
.open = h263_open,
.write = h263_write,
.seek = h263_seek,
.trunc = h263_trunc,
.tell = h263_tell,
.read = h263_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct h263_desc),
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_H263,
h263_open,
h263_rewrite,
h263_write,
h263_seek,
h263_trunc,
h263_tell,
h263_read,
h263_close,
h263_getcomment);
return ast_format_register(&h263_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(h263_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw h263 data";
}
char *key()
{
return ASTERISK_GPL_KEY;

196
formats/format_h264.c
Unescape View File

@ -47,96 +47,20 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Some Ideas for this code came from makeh264e.c by Jeffrey Chilton */
/* Portions of the conversion code are by guido@sienanet.it */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
#define BUF_SIZE 4096 /* Two Real h264 Frames */
struct h264_desc {
unsigned int lastts;
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char h264[4096]; /* Two Real h264 Frames */
};
AST_MUTEX_DEFINE_STATIC(h264_lock);
static int glistcnt = 0;
static char *name = "h264";
static char *desc = "Raw h264 data";
static char *exts = "h264";
static struct ast_filestream *h264_open(FILE *f)
static int h264_open(struct ast_filestream *s)
{
/* 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;
unsigned int ts;
int res;
if ((res = fread(&ts, 1, sizeof(ts), f)) < sizeof(ts)) {
if ((res = fread(&ts, 1, sizeof(ts), s->f)) < sizeof(ts)) {
ast_log(LOG_WARNING, "Empty file!\n");
return NULL;
}
if ((tmp = malloc(sizeof(struct ast_filestream)))) {
memset(tmp, 0, sizeof(struct ast_filestream));
if (ast_mutex_lock(&h264_lock)) {
ast_log(LOG_WARNING, "Unable to lock h264 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->h264;
tmp->fr.frametype = AST_FRAME_VIDEO;
tmp->fr.subclass = AST_FORMAT_H264;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&h264_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *h264_rewrite(FILE *f, 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(&h264_lock)) {
ast_log(LOG_WARNING, "Unable to lock h264 list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&h264_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static void h264_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&h264_lock)) {
ast_log(LOG_WARNING, "Unable to lock h264 list\n");
return;
return -1;
}
glistcnt--;
ast_mutex_unlock(&h264_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
return 0;
}
static struct ast_frame *h264_read(struct ast_filestream *s, int *whennext)
@ -145,82 +69,73 @@ static struct ast_frame *h264_read(struct ast_filestream *s, int *whennext)
int mark=0;
unsigned short len;
unsigned int ts;
struct h264_desc *fs = (struct h264_desc *)s->private;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VIDEO;
s->fr.subclass = AST_FORMAT_H264;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.mallocd = 0;
s->fr.data = s->h264;
if ((res = fread(&len, 1, sizeof(len), s->f)) < 1) {
if ((res = fread(&len, 1, sizeof(len), s->f)) < 1)
return NULL;
}
len = ntohs(len);
if (len & 0x8000) {
mark = 1;
}
mark = (len & 0x8000) ? 1 : 0;
len &= 0x7fff;
if (len > sizeof(s->h264)) {
if (len > BUF_SIZE) {
ast_log(LOG_WARNING, "Length %d is too long\n", len);
len = BUF_SIZE; /* XXX truncate */
}
if ((res = fread(s->h264, 1, len, s->f)) != len) {
s->fr.frametype = AST_FRAME_VIDEO;
s->fr.subclass = AST_FORMAT_H264;
s->fr.mallocd = 0;
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, len);
if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
if (res)
ast_log(LOG_WARNING, "Short read (%d of %d) (%s)!\n", res, len, strerror(errno));
return NULL;
}
s->fr.samples = s->lastts;
s->fr.samples = fs->lastts;
s->fr.datalen = len;
s->fr.subclass |= mark;
s->fr.delivery.tv_sec = 0;
s->fr.delivery.tv_usec = 0;
if ((res = fread(&ts, 1, sizeof(ts), s->f)) == sizeof(ts)) {
s->lastts = ntohl(ts);
*whennext = s->lastts * 4/45;
fs->lastts = ntohl(ts);
*whennext = fs->lastts * 4/45;
} else
*whennext = 0;
return &s->fr;
}
static int h264_write(struct ast_filestream *fs, struct ast_frame *f)
static int h264_write(struct ast_filestream *s, struct ast_frame *f)
{
int res;
unsigned int ts;
unsigned short len;
int subclass;
int mark=0;
int mark;
if (f->frametype != AST_FRAME_VIDEO) {
ast_log(LOG_WARNING, "Asked to write non-video frame!\n");
return -1;
}
subclass = f->subclass;
if (subclass & 0x1)
mark=0x8000;
subclass &= ~0x1;
if (subclass != AST_FORMAT_H264) {
mark = (f->subclass & 0x1) ? 0x8000 : 0;
if ((f->subclass & ~0x1) != AST_FORMAT_H264) {
ast_log(LOG_WARNING, "Asked to write non-h264 frame (%d)!\n", f->subclass);
return -1;
}
ts = htonl(f->samples);
if ((res = fwrite(&ts, 1, sizeof(ts), fs->f)) != sizeof(ts)) {
ast_log(LOG_WARNING, "Bad write (%d/4): %s\n", res, strerror(errno));
return -1;
if ((res = fwrite(&ts, 1, sizeof(ts), s->f)) != sizeof(ts)) {
ast_log(LOG_WARNING, "Bad write (%d/4): %s\n", res, strerror(errno));
return -1;
}
len = htons(f->datalen | mark);
if ((res = fwrite(&len, 1, sizeof(len), fs->f)) != sizeof(len)) {
ast_log(LOG_WARNING, "Bad write (%d/2): %s\n", res, strerror(errno));
return -1;
if ((res = fwrite(&len, 1, sizeof(len), s->f)) != sizeof(len)) {
ast_log(LOG_WARNING, "Bad write (%d/2): %s\n", res, strerror(errno));
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;
if ((res = fwrite(f->data, 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 *h264_getcomment(struct ast_filestream *s)
{
return NULL;
}
static int h264_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
/* No way Jose */
@ -237,44 +152,47 @@ static int h264_trunc(struct ast_filestream *fs)
static off_t h264_tell(struct ast_filestream *fs)
{
/* XXX This is totally bogus XXX */
off_t offset;
offset = ftell(fs->f);
return (offset/20)*160;
off_t offset = ftell(fs->f);
return offset; /* XXX totally bogus, needs fixing */
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format h264_f = {
.name = "h264",
.exts = "h264",
.format = AST_FORMAT_H264,
.open = h264_open,
.write = h264_write,
.seek = h264_seek,
.trunc = h264_trunc,
.tell = h264_tell,
.read = h264_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct h264_desc),
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_H264,
h264_open,
h264_rewrite,
h264_write,
h264_seek,
h264_trunc,
h264_tell,
h264_read,
h264_close,
h264_getcomment);
return ast_format_register(&h264_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(h264_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw h264 data";
}
char *key()
{
return ASTERISK_GPL_KEY;

141
formats/format_ilbc.c
Unescape View File

@ -50,88 +50,8 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Portions of the conversion code are by guido@sienanet.it */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char ilbc[50]; /* One Real iLBC Frame */
};
AST_MUTEX_DEFINE_STATIC(ilbc_lock);
static int glistcnt = 0;
static char *name = "iLBC";
static char *desc = "Raw iLBC data";
static char *exts = "ilbc";
static struct ast_filestream *ilbc_open(FILE *f)
{
/* 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(&ilbc_lock)) {
ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->ilbc;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_ILBC;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&ilbc_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *ilbc_rewrite(FILE *f, 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(&ilbc_lock)) {
ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&ilbc_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static void ilbc_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&ilbc_lock)) {
ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&ilbc_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
}
#define ILBC_BUF_SIZE 50 /* One Real iLBC Frame */
#define ILBC_SAMPLES 240
static struct ast_frame *ilbc_read(struct ast_filestream *s, int *whennext)
{
@ -139,17 +59,14 @@ static struct ast_frame *ilbc_read(struct ast_filestream *s, int *whennext)
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_ILBC;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.samples = 240;
s->fr.datalen = 50;
s->fr.mallocd = 0;
s->fr.data = s->ilbc;
if ((res = fread(s->ilbc, 1, 50, s->f)) != 50) {
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, ILBC_BUF_SIZE);
if ((res = fread(s->fr.data, 1, s->fr.datalen, s->f)) != s->fr.datalen) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
}
*whennext = s->fr.samples;
*whennext = s->fr.samples = ILBC_SAMPLES;
return &s->fr;
}
@ -175,11 +92,6 @@ static int ilbc_write(struct ast_filestream *fs, struct ast_frame *f)
return 0;
}
static char *ilbc_getcomment(struct ast_filestream *s)
{
return NULL;
}
static int ilbc_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
long bytes;
@ -189,7 +101,7 @@ static int ilbc_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
fseeko(fs->f, 0, SEEK_END);
max = ftello(fs->f);
bytes = 50 * (sample_offset / 240);
bytes = ILBC_BUF_SIZE * (sample_offset / ILBC_SAMPLES);
if (whence == SEEK_SET)
offset = bytes;
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
@ -216,43 +128,46 @@ static int ilbc_trunc(struct ast_filestream *fs)
static off_t ilbc_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
return (offset/50)*240;
off_t offset = ftello(fs->f);
return (offset/ILBC_BUF_SIZE)*ILBC_SAMPLES;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format ilbc_f = {
.name = "iLBC",
.exts = "ilbc",
.format = AST_FORMAT_ILBC,
.write = ilbc_write,
.seek = ilbc_seek,
.trunc = ilbc_trunc,
.tell = ilbc_tell,
.read = ilbc_read,
.buf_size = ILBC_BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_ILBC,
ilbc_open,
ilbc_rewrite,
ilbc_write,
ilbc_seek,
ilbc_trunc,
ilbc_tell,
ilbc_read,
ilbc_close,
ilbc_getcomment);
return ast_format_register(&ilbc_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(ilbc_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw iLBC data";
}
char *key()
{
return ASTERISK_GPL_KEY;

284
formats/format_ogg_vorbis.c
Unescape View File

@ -51,11 +51,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#define SAMPLES_MAX 160
#define BLOCK_SIZE 4096
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
FILE *f;
struct vorbis_desc {
/* structures for handling the Ogg container */
ogg_sync_state oy;
ogg_stream_state os;
@ -73,14 +69,6 @@ struct ast_filestream {
/*! \brief Indicates whether an End of Stream condition has been detected. */
int eos;
/*! \brief Buffer to hold audio data. */
short buffer[SAMPLES_MAX];
/*! \brief Asterisk frame object. */
struct ast_frame fr;
char waste[AST_FRIENDLY_OFFSET];
char empty;
};
AST_MUTEX_DEFINE_STATIC(ogg_vorbis_lock);
@ -96,176 +84,123 @@ static char *exts = "ogg";
* \param f File that points to on disk storage of the OGG/Vorbis data.
* \return The new filestream.
*/
static struct ast_filestream *ogg_vorbis_open(FILE * f)
static int ogg_vorbis_open(struct ast_filestream *s)
{
int i;
int bytes;
int result;
char **ptr;
char *buffer;
struct vorbis_desc *tmp = (struct vorbis_desc *)s->private;
struct ast_filestream *tmp;
tmp->writing = 0;
tmp->f = f;
if ((tmp = malloc(sizeof(struct ast_filestream)))) {
memset(tmp, 0, sizeof(struct ast_filestream));
ogg_sync_init(&tmp->oy);
tmp->writing = 0;
tmp->f = f;
ogg_sync_init(&tmp->oy);
buffer = ogg_sync_buffer(&tmp->oy, BLOCK_SIZE);
bytes = fread(buffer, 1, BLOCK_SIZE, f);
ogg_sync_wrote(&tmp->oy, bytes);
buffer = ogg_sync_buffer(&tmp->oy, BLOCK_SIZE);
bytes = fread(buffer, 1, BLOCK_SIZE, f);
ogg_sync_wrote(&tmp->oy, bytes);
result = ogg_sync_pageout(&tmp->oy, &tmp->og);
if (result != 1) {
if (bytes < BLOCK_SIZE) {
ast_log(LOG_ERROR, "Run out of data...\n");
} else {
ast_log(LOG_ERROR,
"Input does not appear to be an Ogg bitstream.\n");
}
fclose(f);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
result = ogg_sync_pageout(&tmp->oy, &tmp->og);
if (result != 1) {
if(bytes < BLOCK_SIZE) {
ast_log(LOG_ERROR, "Run out of data...\n");
} else {
ast_log(LOG_ERROR, "Input does not appear to be an Ogg bitstream.\n");
}
ogg_sync_clear(&tmp->oy);
return -1;
}
ogg_stream_init(&tmp->os, ogg_page_serialno(&tmp->og));
vorbis_info_init(&tmp->vi);
vorbis_comment_init(&tmp->vc);
if (ogg_stream_pagein(&tmp->os, &tmp->og) < 0) {
ast_log(LOG_ERROR,
"Error reading first page of Ogg bitstream data.\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
ogg_stream_init(&tmp->os, ogg_page_serialno(&tmp->og));
vorbis_info_init(&tmp->vi);
vorbis_comment_init(&tmp->vc);
if (ogg_stream_pagein(&tmp->os, &tmp->og) < 0) {
ast_log(LOG_ERROR, "Error reading first page of Ogg bitstream data.\n");
error:
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
return -1;
}
if (ogg_stream_packetout(&tmp->os, &tmp->op) != 1) {
ast_log(LOG_ERROR, "Error reading initial header packet.\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
if (ogg_stream_packetout(&tmp->os, &tmp->op) != 1) {
ast_log(LOG_ERROR, "Error reading initial header packet.\n");
goto error;
}
if (vorbis_synthesis_headerin(&tmp->vi, &tmp->vc, &tmp->op) < 0) {
ast_log(LOG_ERROR, "This Ogg bitstream does not contain Vorbis audio data.\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
if (vorbis_synthesis_headerin(&tmp->vi, &tmp->vc, &tmp->op) < 0) {
ast_log(LOG_ERROR, "This Ogg bitstream does not contain Vorbis audio data.\n");
goto error;
}
i = 0;
for (i = 0; i < 2 ; ) {
while (i < 2) {
while (i < 2) {
result = ogg_sync_pageout(&tmp->oy, &tmp->og);
if (result == 0)
break;
if (result == 1) {
ogg_stream_pagein(&tmp->os, &tmp->og);
while (i < 2) {
result = ogg_stream_packetout(&tmp->os, &tmp->op);
if (result == 0)
break;
if (result < 0) {
ast_log(LOG_ERROR, "Corrupt secondary header. Exiting.\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
vorbis_synthesis_headerin(&tmp->vi, &tmp->vc, &tmp->op);
i++;
result = ogg_sync_pageout(&tmp->oy, &tmp->og);
if (result == 0)
break;
if (result == 1) {
ogg_stream_pagein(&tmp->os, &tmp->og);
while(i < 2) {
result = ogg_stream_packetout(&tmp->os,&tmp->op);
if(result == 0)
break;
if(result < 0) {
ast_log(LOG_ERROR, "Corrupt secondary header. Exiting.\n");
goto error;
}
vorbis_synthesis_headerin(&tmp->vi, &tmp->vc, &tmp->op);
i++;
}
}
buffer = ogg_sync_buffer(&tmp->oy, BLOCK_SIZE);
bytes = fread(buffer, 1, BLOCK_SIZE, f);
if (bytes == 0 && i < 2) {
ast_log(LOG_ERROR, "End of file before finding all Vorbis headers!\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
ogg_sync_wrote(&tmp->oy, bytes);
}
ptr = tmp->vc.user_comments;
while (*ptr) {
ast_log(LOG_DEBUG, "OGG/Vorbis comment: %s\n", *ptr);
++ptr;
buffer = ogg_sync_buffer(&tmp->oy, BLOCK_SIZE);
bytes = fread(buffer, 1, BLOCK_SIZE, f);
if(bytes == 0 && i < 2) {
ast_log(LOG_ERROR, "End of file before finding all Vorbis headers!\n");
goto error;
}
ast_log(LOG_DEBUG, "OGG/Vorbis bitstream is %d channel, %ldHz\n",
tmp->vi.channels, tmp->vi.rate);
ast_log(LOG_DEBUG, "OGG/Vorbis file encoded by: %s\n",
tmp->vc.vendor);
ogg_sync_wrote(&tmp->oy, bytes);
}
if (tmp->vi.channels != 1) {
ast_log(LOG_ERROR, "Only monophonic OGG/Vorbis files are currently supported!\n");
ogg_stream_clear(&tmp->os);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
ptr = tmp->vc.user_comments;
while(*ptr){
ast_log(LOG_DEBUG, "OGG/Vorbis comment: %s\n", *ptr);
++ptr;
}
ast_log(LOG_DEBUG, "OGG/Vorbis bitstream is %d channel, %ldHz\n", tmp->vi.channels, tmp->vi.rate);
ast_log(LOG_DEBUG, "OGG/Vorbis file encoded by: %s\n", tmp->vc.vendor);
if (tmp->vi.rate != 8000) {
ast_log(LOG_ERROR, "Only 8000Hz OGG/Vorbis files are currently supported!\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_block_clear(&tmp->vb);
vorbis_dsp_clear(&tmp->vd);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
if(tmp->vi.channels != 1) {
ast_log(LOG_ERROR, "Only monophonic OGG/Vorbis files are currently supported!\n");
goto error;
}
vorbis_synthesis_init(&tmp->vd, &tmp->vi);
vorbis_block_init(&tmp->vd, &tmp->vb);
if (ast_mutex_lock(&ogg_vorbis_lock)) {
ast_log(LOG_WARNING, "Unable to lock ogg_vorbis list\n");
fclose(f);
ogg_stream_clear(&tmp->os);
vorbis_block_clear(&tmp->vb);
vorbis_dsp_clear(&tmp->vd);
vorbis_comment_clear(&tmp->vc);
vorbis_info_clear(&tmp->vi);
ogg_sync_clear(&tmp->oy);
free(tmp);
return NULL;
}
glistcnt++;
ast_mutex_unlock(&ogg_vorbis_lock);
ast_update_use_count();
if(tmp->vi.rate != DEFAULT_SAMPLE_RATE) {
ast_log(LOG_ERROR, "Only 8000Hz OGG/Vorbis files are currently supported!\n");
vorbis_block_clear(&tmp->vb);
vorbis_dsp_clear(&tmp->vd);
goto error;
}
return tmp;
vorbis_synthesis_init(&tmp->vd, &tmp->vi);
vorbis_block_init(&tmp->vd, &tmp->vb);
if(ast_mutex_lock(&ogg_vorbis_lock)) {
ast_log(LOG_WARNING, "Unable to lock ogg_vorbis list\n");
vorbis_block_clear(&tmp->vb);
vorbis_dsp_clear(&tmp->vd);
goto error;
}
glistcnt++;
ast_mutex_unlock(&ogg_vorbis_lock);
ast_update_use_count();
return 0;
}
/*!
@ -291,7 +226,7 @@ static struct ast_filestream *ogg_vorbis_rewrite(FILE * f,
vorbis_info_init(&tmp->vi);
if (vorbis_encode_init_vbr(&tmp->vi, 1, 8000, 0.4)) {
if (vorbis_encode_init_vbr(&tmp->vi, 1, DEFAULT_SAMPLE_RATE, 0.4)) {
ast_log(LOG_ERROR, "Unable to initialize Vorbis encoder!\n");
free(tmp);
return NULL;
@ -440,9 +375,6 @@ static void ogg_vorbis_close(struct ast_filestream *s)
if (s->writing) {
ogg_sync_clear(&s->oy);
}
fclose(s->f);
free(s);
}
/*!
@ -643,18 +575,28 @@ static char *ogg_vorbis_getcomment(struct ast_filestream *s)
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format vorbis_f = {
.name =
.ext =
.format = AST_FORMAT_SLINEAR,
.open = ogg_vorbis_open,
.rewrite = ogg_vorbis_rewrite,
.write = ogg_vorbis_write,
.seek = ogg_vorbis_seek,
.trunc = ogg_vorbis_trunc,
.tell = ogg_vorbis_tell,
.read = ogg_vorbis_read,
.close = ogg_vorbis_close,
.buf_sie = BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct vorbis_desc),
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_SLINEAR,
ogg_vorbis_open,
ogg_vorbis_rewrite,
ogg_vorbis_write,
ogg_vorbis_seek,
ogg_vorbis_trunc,
ogg_vorbis_tell,
ogg_vorbis_read,
ogg_vorbis_close,
ogg_vorbis_getcomment);
return ast_format_register(&vorbis_f);
}
int unload_module()
@ -664,7 +606,7 @@ int unload_module()
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()

459
formats/format_pcm.c
Unescape View File

@ -45,135 +45,67 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/endian.h"
#include "asterisk/ulaw.h"
#include "asterisk/alaw.h"
#define BUF_SIZE 160 /* 160 samples */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_channel *owner;
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 */
struct timeval last;
};
#define BUF_SIZE 160 /* 160 bytes, and same number of samples */
AST_MUTEX_DEFINE_STATIC(pcm_lock);
static int glistcnt = 0;
static char ulaw_silence[BUF_SIZE];
static char alaw_silence[BUF_SIZE];
static char *name = "pcm";
static char *desc = "Raw uLaw 8khz Audio support (PCM)";
static char *exts = "pcm|ulaw|ul|mu";
/* #define REALTIME_WRITE */ /* XXX does it work at all ? */
static char ulaw_silence[BUF_SIZE];
#ifdef REALTIME_WRITE
struct pcm_desc {
unsigned long start_time;
};
static struct ast_filestream *pcm_open(FILE *f)
/* Returns time in msec since system boot. */
static unsigned long get_time(void)
{
/* 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(&pcm_lock)) {
ast_log(LOG_WARNING, "Unable to lock pcm list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->buf;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_ULAW;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
struct tms buf;
clock_t cur;
cur = times( &buf );
if( cur < 0 ) {
ast_log( LOG_WARNING, "Cannot get current time\n" );
return 0;
}
return tmp;
return cur * 1000 / sysconf( _SC_CLK_TCK );
}
static struct ast_filestream *pcm_rewrite(FILE *f, const char *comment)
static int pcma_open(struct ast_filestream *s)
{
/* 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(&pcm_lock)) {
ast_log(LOG_WARNING, "Unable to lock pcm list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
if (s->fmt->format == AST_FORMAT_ALAW)
pd->starttime = get_time();
return 0;
}
static void pcm_close(struct ast_filestream *s)
static int pcma_rewrite(struct ast_filestream *s, const char *comment)
{
if (ast_mutex_lock(&pcm_lock)) {
ast_log(LOG_WARNING, "Unable to lock pcm list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
return pcma_open(s);
}
#endif
static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext)
{
int res;
int delay;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_ULAW;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.subclass = s->fmt->format;
s->fr.mallocd = 0;
s->fr.data = s->buf;
if ((res = fread(s->buf, 1, BUF_SIZE, s->f)) < 1) {
FR_SET_BUF(&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;
}
s->fr.samples = res;
s->fr.datalen = res;
delay = s->fr.samples;
*whennext = delay;
*whennext = s->fr.samples = res;
return &s->fr;
}
static int pcm_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_ULAW) {
ast_log(LOG_WARNING, "Asked to write non-ulaw 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 pcm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
off_t cur, max, offset = 0;
@ -204,13 +136,13 @@ static int pcm_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
}
if (whence == SEEK_FORCECUR && offset > max) { /* extend the file */
size_t left = offset - max;
const char *src = (fs->fmt->format == AST_FORMAT_ALAW) ? alaw_silence : ulaw_silence;
while (left) {
size_t written = fwrite(ulaw_silence, sizeof(ulaw_silence[0]),
(left > BUF_SIZE) ? BUF_SIZE : left, fs->f);
size_t written = fwrite(src, 1, (left > BUF_SIZE) ? BUF_SIZE : left, fs->f);
if (written == -1)
break; /* error */
left -= written * sizeof(ulaw_silence[0]);
left -= written;
}
ret = 0; /* successful */
} else {
@ -230,51 +162,336 @@ static int pcm_trunc(struct ast_filestream *fs)
static off_t pcm_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
return offset;
return ftello(fs->f);
}
static char *pcm_getcomment(struct ast_filestream *s)
static int pcm_write(struct ast_filestream *fs, struct ast_frame *f)
{
return NULL;
int res;
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
}
if (f->subclass != fs->fmt->format) {
ast_log(LOG_WARNING, "Asked to write incompatible format frame (%d)!\n", f->subclass);
return -1;
}
#ifdef REALTIME_WRITE
if (s->fmt->format == AST_FORMAT_ALAW) {
struct pcm_desc *pd = (struct pcm_desc *)fs->private;
struct stat stat_buf;
unsigned long cur_time = get_time();
unsigned long fpos = ( cur_time - pd->start_time ) * 8; /* 8 bytes per msec */
/* Check if we have written to this position yet. If we have, then increment pos by one frame
* for some degree of protection against receiving packets in the same clock tick.
*/
fstat(fileno(fs->f), &stat_buf );
if (stat_buf.st_size > fpos )
fpos += f->datalen; /* Incrementing with the size of this current frame */
if (stat_buf.st_size < fpos) {
/* fill the gap with 0x55 rather than 0. */
char buf[1024];
unsigned long cur, to_write;
cur = stat_buf.st_size;
if (fseek(fs->f, cur, SEEK_SET) < 0) {
ast_log( LOG_WARNING, "Cannot seek in file: %s\n", strerror(errno) );
return -1;
}
memset(buf, 0x55, 512);
while (cur < fpos) {
to_write = fpos - cur;
if (to_write > sizeof(buf))
to_write = sizeof(buf);
fwrite(buf, 1, to_write, fs->f);
cur += to_write;
}
}
if (fseek(s->f, fpos, SEEK_SET) < 0) {
ast_log( LOG_WARNING, "Cannot seek in file: %s\n", strerror(errno) );
return -1;
}
}
#endif /* REALTIME_WRITE */
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;
}
/* SUN .au support routines */
#define AU_HEADER_SIZE 24
#define AU_HEADER(var) u_int32_t var[6]
#define AU_HDR_MAGIC_OFF 0
#define AU_HDR_HDR_SIZE_OFF 1
#define AU_HDR_DATA_SIZE_OFF 2
#define AU_HDR_ENCODING_OFF 3
#define AU_HDR_SAMPLE_RATE_OFF 4
#define AU_HDR_CHANNELS_OFF 5
#define AU_ENC_8BIT_ULAW 1
#define AU_MAGIC 0x2e736e64
#if __BYTE_ORDER == __BIG_ENDIAN
#define htoll(b) (b)
#define htols(b) (b)
#define ltohl(b) (b)
#define ltohs(b) (b)
#else
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define htoll(b) \
(((((b) ) & 0xFF) << 24) | \
((((b) >> 8) & 0xFF) << 16) | \
((((b) >> 16) & 0xFF) << 8) | \
((((b) >> 24) & 0xFF) ))
#define htols(b) \
(((((b) ) & 0xFF) << 8) | \
((((b) >> 8) & 0xFF) ))
#define ltohl(b) htoll(b)
#define ltohs(b) htols(b)
#else
#error "Endianess not defined"
#endif
#endif
static int check_header(FILE *f)
{
AU_HEADER(header);
u_int32_t magic;
u_int32_t hdr_size;
u_int32_t data_size;
u_int32_t encoding;
u_int32_t sample_rate;
u_int32_t channels;
if (fread(header, 1, AU_HEADER_SIZE, f) != AU_HEADER_SIZE) {
ast_log(LOG_WARNING, "Read failed (header)\n");
return -1;
}
magic = ltohl(header[AU_HDR_MAGIC_OFF]);
if (magic != (u_int32_t) AU_MAGIC) {
ast_log(LOG_WARNING, "Bad magic: 0x%x\n", magic);
}
/* hdr_size = ltohl(header[AU_HDR_HDR_SIZE_OFF]);
if (hdr_size < AU_HEADER_SIZE)*/
hdr_size = AU_HEADER_SIZE;
/* data_size = ltohl(header[AU_HDR_DATA_SIZE_OFF]); */
encoding = ltohl(header[AU_HDR_ENCODING_OFF]);
if (encoding != AU_ENC_8BIT_ULAW) {
ast_log(LOG_WARNING, "Unexpected format: %d. Only 8bit ULAW allowed (%d)\n", encoding, AU_ENC_8BIT_ULAW);
return -1;
}
sample_rate = ltohl(header[AU_HDR_SAMPLE_RATE_OFF]);
if (sample_rate != DEFAULT_SAMPLE_RATE) {
ast_log(LOG_WARNING, "Sample rate can only be 8000 not %d\n", sample_rate);
return -1;
}
channels = ltohl(header[AU_HDR_CHANNELS_OFF]);
if (channels != 1) {
ast_log(LOG_WARNING, "Not in mono: channels=%d\n", channels);
return -1;
}
/* Skip to data */
fseek(f, 0, SEEK_END);
data_size = ftell(f) - hdr_size;
if (fseek(f, hdr_size, SEEK_SET) == -1 ) {
ast_log(LOG_WARNING, "Failed to skip to data: %d\n", hdr_size);
return -1;
}
return data_size;
}
static int update_header(FILE *f)
{
off_t cur, end;
u_int32_t datalen;
int bytes;
cur = ftell(f);
fseek(f, 0, SEEK_END);
end = ftell(f);
/* data starts 24 bytes in */
bytes = end - AU_HEADER_SIZE;
datalen = htoll(bytes);
if (cur < 0) {
ast_log(LOG_WARNING, "Unable to find our position\n");
return -1;
}
if (fseek(f, AU_HDR_DATA_SIZE_OFF * sizeof(u_int32_t), SEEK_SET)) {
ast_log(LOG_WARNING, "Unable to set our position\n");
return -1;
}
if (fwrite(&datalen, 1, sizeof(datalen), f) != sizeof(datalen)) {
ast_log(LOG_WARNING, "Unable to set write file size\n");
return -1;
}
if (fseek(f, cur, SEEK_SET)) {
ast_log(LOG_WARNING, "Unable to return to position\n");
return -1;
}
return 0;
}
static int write_header(FILE *f)
{
AU_HEADER(header);
header[AU_HDR_MAGIC_OFF] = htoll((u_int32_t) AU_MAGIC);
header[AU_HDR_HDR_SIZE_OFF] = htoll(AU_HEADER_SIZE);
header[AU_HDR_DATA_SIZE_OFF] = 0;
header[AU_HDR_ENCODING_OFF] = htoll(AU_ENC_8BIT_ULAW);
header[AU_HDR_SAMPLE_RATE_OFF] = htoll(DEFAULT_SAMPLE_RATE);
header[AU_HDR_CHANNELS_OFF] = htoll(1);
/* Write an au header, ignoring sizes which will be filled in later */
fseek(f, 0, SEEK_SET);
if (fwrite(header, 1, AU_HEADER_SIZE, f) != AU_HEADER_SIZE) {
ast_log(LOG_WARNING, "Unable to write header\n");
return -1;
}
return 0;
}
static int au_open(struct ast_filestream *s)
{
if (check_header(s->f) < 0)
return -1;
return 0;
}
static int au_rewrite(struct ast_filestream *s, const char *comment)
{
if (write_header(s->f))
return -1;
return 0;
}
/* XXX check this, probably incorrect */
static int au_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
off_t min, max, cur;
long offset = 0, samples;
samples = sample_offset;
min = AU_HEADER_SIZE;
cur = ftello(fs->f);
fseek(fs->f, 0, SEEK_END);
max = ftello(fs->f);
if (whence == SEEK_SET)
offset = samples + min;
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
offset = samples + cur;
else if (whence == SEEK_END)
offset = max - samples;
if (whence != SEEK_FORCECUR) {
offset = (offset > max) ? max : offset;
}
/* always protect the header space. */
offset = (offset < min) ? min : offset;
return fseeko(fs->f, offset, SEEK_SET);
}
static int au_trunc(struct ast_filestream *fs)
{
if (ftruncate(fileno(fs->f), ftell(fs->f)))
return -1;
return update_header(fs->f);
}
static off_t au_tell(struct ast_filestream *fs)
{
off_t offset = ftello(fs->f);
return offset - AU_HEADER_SIZE;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format alaw_f = {
.name = "alaw",
.exts = "alaw|al",
.format = AST_FORMAT_ALAW,
.write = pcm_write,
.seek = pcm_seek,
.trunc = pcm_trunc,
.tell = pcm_tell,
.read = pcm_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
#ifdef REALTIME_WRITE
.open = pcma_open,
.rewrite = pcma_rewrite,
.desc_size = sizeof(struct pcm_desc),
#endif
};
static const struct ast_format pcm_f = {
.name = "pcm",
.exts = "pcm|ulaw|ul|mu",
.format = AST_FORMAT_ULAW,
.write = pcm_write,
.seek = pcm_seek,
.trunc = pcm_trunc,
.tell = pcm_tell,
.read = pcm_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
};
static const struct ast_format au_f = {
.name = "au",
.exts = "au",
.format = AST_FORMAT_ULAW,
.open = au_open,
.rewrite = au_rewrite,
.write = pcm_write,
.seek = au_seek,
.trunc = au_trunc,
.tell = au_tell,
.read = pcm_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET, /* this many shorts */
.lockp = &me,
};
int load_module()
{
int index;
/* XXX better init ? */
for (index = 0; index < (sizeof(ulaw_silence) / sizeof(ulaw_silence[0])); index++)
ulaw_silence[index] = AST_LIN2MU(0);
for (index = 0; index < (sizeof(alaw_silence) / sizeof(alaw_silence[0])); index++)
alaw_silence[index] = AST_LIN2A(0);
return ast_format_register(name, exts, AST_FORMAT_ULAW,
pcm_open,
pcm_rewrite,
pcm_write,
pcm_seek,
pcm_trunc,
pcm_tell,
pcm_read,
pcm_close,
pcm_getcomment);
return ast_format_register(&pcm_f) || ast_format_register(&alaw_f)
|| ast_format_register(&au_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(pcm_f.name) || ast_format_unregister(alaw_f.name)
|| ast_format_unregister(au_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw/Sun uLaw/ALaw 8khz Audio support (PCM,PCMA,AU)";
}
char *key()
{
return ASTERISK_GPL_KEY;

161
formats/format_pcm_alaw.c
Unescape View File

@ -47,42 +47,25 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/endian.h"
#include "asterisk/alaw.h"
#define BUF_SIZE 160 /* 160 samples */
/* #define REALTIME_WRITE */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* 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 */
#define BUF_SIZE 160 /* 160 bytes, and same number of samples */
/* #define REALTIME_WRITE */ /* XXX does it work at all ? */
struct pcma_desc {
#ifdef REALTIME_WRITE
unsigned long start_time;
#endif
};
AST_MUTEX_DEFINE_STATIC(pcm_lock);
static int glistcnt = 0;
static char *name = "alaw";
static char *desc = "Raw aLaw 8khz PCM Audio support";
static char *exts = "alaw|al";
static char alaw_silence[BUF_SIZE];
#if 0
/* Returns time in msec since system boot. */
static unsigned long get_time(void)
static unsigned long get_time(struct ast_filestream *s)
{
struct tms buf;
clock_t cur;
unsigned long *res;
cur = times( &buf );
if( cur < 0 )
@ -90,77 +73,26 @@ static unsigned long get_time(void)
ast_log( LOG_WARNING, "Cannot get current time\n" );
return 0;
}
return cur * 1000 / sysconf( _SC_CLK_TCK );
}
#endif
static struct ast_filestream *pcm_open(FILE *f)
{
/* 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(&pcm_lock)) {
ast_log(LOG_WARNING, "Unable to lock pcm list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->buf;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_ALAW;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
#ifdef REALTIME_WRITE
tmp->start_time = get_time();
#endif
glistcnt++;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
res = cur * 1000 / sysconf( _SC_CLK_TCK );
if (s) {
struct pcma_desc *d = (struct pcma_filestream *)s->private;
d->start_time = res;
}
return tmp;
return res;
}
#endif
static struct ast_filestream *pcm_rewrite(FILE *f, const char *comment)
static int pcm_open(struct ast_filestream *s)
{
/* 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(&pcm_lock)) {
ast_log(LOG_WARNING, "Unable to lock pcm list\n");
free(tmp);
return NULL;
}
tmp->f = f;
#ifdef REALTIME_WRITE
tmp->start_time = get_time();
get_time(s);
#endif
glistcnt++;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
return 0;
}
static void pcm_close(struct ast_filestream *s)
static int pcm_rewrite(struct ast_filestream *s, const char *comment)
{
if (ast_mutex_lock(&pcm_lock)) {
ast_log(LOG_WARNING, "Unable to lock pcm list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
return pcm_open(s);
}
static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext)
@ -170,17 +102,15 @@ static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext)
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_ALAW;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.mallocd = 0;
s->fr.data = s->buf;
if ((res = fread(s->buf, 1, BUF_SIZE, s->f)) < 1) {
FR_SET_BUF(&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;
}
s->fr.samples = res;
s->fr.datalen = res;
*whennext = s->fr.samples;
*whennext = s->fr.samples = res;
return &s->fr;
}
@ -191,6 +121,7 @@ static int pcm_write(struct ast_filestream *fs, struct ast_frame *f)
unsigned long cur_time;
unsigned long fpos;
struct stat stat_buf;
struct pcma_filestream *s = (struct pcma_filestream *)fs->private;
#endif
if (f->frametype != AST_FRAME_VOICE) {
@ -204,7 +135,7 @@ static int pcm_write(struct ast_filestream *fs, struct ast_frame *f)
#ifdef REALTIME_WRITE
cur_time = get_time();
fpos = ( cur_time - fs->start_time ) * 8; /* 8 bytes per msec */
fpos = ( cur_time - s->start_time ) * 8; /* 8 bytes per msec */
/* Check if we have written to this position yet. If we have, then increment pos by one frame
* for some degree of protection against receiving packets in the same clock tick.
*/
@ -306,16 +237,28 @@ static int pcm_trunc(struct ast_filestream *fs)
static off_t pcm_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
return offset;
return ftello(fs->f);
}
static char *pcm_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format alaw_f = {
.name = "alaw",
.exts = "alaw|al",
.format = AST_FORMAT_ALAW,
.open = pcm_open,
.rewrite = pcm_rewrite,
.write = pcm_write,
.seek = pcm_seek,
.trunc = pcm_trunc,
.tell = pcm_tell,
.read = pcm_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
#ifdef REALTIME_WRITE
.desc_size = sizeof(struct pcma_desc),
#endif
};
int load_module()
{
@ -324,34 +267,24 @@ int load_module()
for (index = 0; index < (sizeof(alaw_silence) / sizeof(alaw_silence[0])); index++)
alaw_silence[index] = AST_LIN2A(0);
return ast_format_register(name, exts, AST_FORMAT_ALAW,
pcm_open,
pcm_rewrite,
pcm_write,
pcm_seek,
pcm_trunc,
pcm_tell,
pcm_read,
pcm_close,
pcm_getcomment);
return ast_format_register(&alaw_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(alaw_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw aLaw 8khz PCM Audio support";
}
char *key()
{
return ASTERISK_GPL_KEY;

137
formats/format_sln.c
Unescape View File

@ -43,111 +43,26 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/endian.h"
#define BUF_SIZE 320 /* 320 samples */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_channel *owner;
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 */
struct timeval last;
};
AST_MUTEX_DEFINE_STATIC(slinear_lock);
static int glistcnt = 0;
static char *name = "sln";
static char *desc = "Raw Signed Linear Audio support (SLN)";
static char *exts = "sln|raw";
static struct ast_filestream *slinear_open(FILE *f)
{
/* 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(&slinear_lock)) {
ast_log(LOG_WARNING, "Unable to lock slinear list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->buf;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_SLINEAR;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
glistcnt++;
ast_mutex_unlock(&slinear_lock);
ast_update_use_count();
}
return tmp;
}
static struct ast_filestream *slinear_rewrite(FILE *f, 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(&slinear_lock)) {
ast_log(LOG_WARNING, "Unable to lock slinear list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&slinear_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
static void slinear_close(struct ast_filestream *s)
{
if (ast_mutex_lock(&slinear_lock)) {
ast_log(LOG_WARNING, "Unable to lock slinear list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&slinear_lock);
ast_update_use_count();
fclose(s->f);
free(s);
s = NULL;
}
#define BUF_SIZE 320 /* 320 bytes, 160 samples */
#define SLIN_SAMPLES 160
static struct ast_frame *slinear_read(struct ast_filestream *s, int *whennext)
{
int res;
int delay;
/* Send a frame from the file to the appropriate channel */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_SLINEAR;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.mallocd = 0;
s->fr.data = s->buf;
if ((res = fread(s->buf, 1, BUF_SIZE, s->f)) < 1) {
FR_SET_BUF(&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;
}
s->fr.samples = res/2;
*whennext = s->fr.samples = res/2;
s->fr.datalen = res;
delay = s->fr.samples;
*whennext = delay;
return &s->fr;
}
@ -199,48 +114,44 @@ static int slinear_trunc(struct ast_filestream *fs)
static off_t slinear_tell(struct ast_filestream *fs)
{
off_t offset;
offset = ftello(fs->f);
return offset / 2;
return ftello(fs->f) / 2;
}
static char *slinear_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format slin_f = {
.name = "sln",
.exts = "sln|raw",
.format = AST_FORMAT_SLINEAR,
.write = slinear_write,
.seek = slinear_seek,
.trunc = slinear_trunc,
.tell = slinear_tell,
.read = slinear_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_SLINEAR,
slinear_open,
slinear_rewrite,
slinear_write,
slinear_seek,
slinear_trunc,
slinear_tell,
slinear_read,
slinear_close,
slinear_getcomment);
return ast_format_register(&slin_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(slin_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Raw Signed Linear Audio support (SLN)";
}
char *key()
{
return ASTERISK_GPL_KEY;

147
formats/format_vox.c
Unescape View File

@ -45,117 +45,29 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/module.h"
#include "asterisk/endian.h"
#define BUF_SIZE 80 /* 160 samples */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* 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";
static struct ast_filestream *vox_open(FILE *f)
{
/* 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->f = f;
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;
}
static struct ast_filestream *vox_rewrite(FILE *f, 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->f = f;
glistcnt++;
ast_mutex_unlock(&vox_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
}
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();
fclose(s->f);
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 = fread(s->buf, 1, BUF_SIZE, s->f)) < 1) {
FR_SET_BUF(&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;
}
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) {
@ -166,18 +78,13 @@ static int vox_write(struct ast_filestream *fs, struct ast_frame *f)
ast_log(LOG_WARNING, "Asked to write non-ADPCM frame (%d)!\n", f->subclass);
return -1;
}
if ((res = fwrite(f->data, 1, f->datalen, fs->f)) != f->datalen) {
if ((res = fwrite(f->data, 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)
{
return NULL;
}
static int vox_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
off_t offset=0,min,cur,max,distance;
@ -199,8 +106,7 @@ static int vox_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
offset = (offset > max)?max:offset;
offset = (offset < min)?min:offset;
}
fseeko(fs->f, offset, SEEK_SET);
return ftello(fs->f);
return fseeko(fs->f, offset, SEEK_SET);
}
static int vox_trunc(struct ast_filestream *fs)
@ -215,38 +121,41 @@ static off_t vox_tell(struct ast_filestream *fs)
return offset;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format vox_f = {
.name = "vox",
.exts = "vox",
.format = AST_FORMAT_ADPCM,
.write = vox_write,
.seek = vox_seek,
.trunc = vox_trunc,
.tell = vox_tell,
.read = vox_read,
.buf_size = BUF_SIZE + AST_FRIENDLY_OFFSET,
.lockp = &me,
};
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);
return ast_format_register(&vox_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(vox_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Dialogic VOX (ADPCM) File Format";
}
char *key()
{
return ASTERISK_GPL_KEY;

228
formats/format_wav.c
Unescape View File

@ -49,30 +49,16 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Portions of the conversion code are by guido@sienanet.it */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
#define WAV_BUF_SIZE 320
struct wav_desc { /* format-specific parameters */
int bytes;
int needsgain;
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
short buf[160];
int foffset;
int lasttimeout;
int maxlen;
struct timeval last;
};
AST_MUTEX_DEFINE_STATIC(wav_lock);
static int glistcnt = 0;
static char *name = "wav";
static char *desc = "Microsoft WAV format (8000hz Signed Linear)";
static char *exts = "wav";
#define BLOCKSIZE 160
#define GAIN 2 /* 2^GAIN is the multiple to increase the volume by */
@ -165,7 +151,7 @@ static int check_header(FILE *f)
ast_log(LOG_WARNING, "Read failed (freq)\n");
return -1;
}
if (ltohl(freq) != 8000) {
if (ltohl(freq) != DEFAULT_SAMPLE_RATE) {
ast_log(LOG_WARNING, "Unexpected freqency %d\n", ltohl(freq));
return -1;
}
@ -233,7 +219,6 @@ static int update_header(FILE *f)
off_t cur,end;
int datalen,filelen,bytes;
cur = ftello(f);
fseek(f, 0, SEEK_END);
end = ftello(f);
@ -333,135 +318,90 @@ static int write_header(FILE *f)
return 0;
}
static struct ast_filestream *wav_open(FILE *f)
static int wav_open(struct ast_filestream *s)
{
/* 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 ((tmp->maxlen = check_header(f)) < 0) {
free(tmp);
return NULL;
}
if (ast_mutex_lock(&wav_lock)) {
ast_log(LOG_WARNING, "Unable to lock wav list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->needsgain = 1;
tmp->fr.data = tmp->buf;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_SLINEAR;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
tmp->bytes = 0;
glistcnt++;
ast_mutex_unlock(&wav_lock);
ast_update_use_count();
}
return tmp;
struct wav_desc *tmp = (struct wav_desc *)s->private;
if ((tmp->maxlen = check_header(s->f)) < 0)
return -1;
return 0;
}
static struct ast_filestream *wav_rewrite(FILE *f, const char *comment)
static int wav_rewrite(struct ast_filestream *s, 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 (write_header(f)) {
free(tmp);
return NULL;
}
if (ast_mutex_lock(&wav_lock)) {
ast_log(LOG_WARNING, "Unable to lock wav list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&wav_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
if (write_header(s->f))
return -1;
return 0;
}
static void wav_close(struct ast_filestream *s)
{
char zero = 0;
if (ast_mutex_lock(&wav_lock)) {
ast_log(LOG_WARNING, "Unable to lock wav list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&wav_lock);
ast_update_use_count();
struct wav_desc *fs = (struct wav_desc *)s->private;
/* Pad to even length */
if (s->bytes & 0x1)
if (fs->bytes & 0x1)
fwrite(&zero, 1, 1, s->f);
fclose(s->f);
free(s);
s = NULL;
}
static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
{
int res;
int delay;
int samples; /* actual samples read */
int x;
short tmp[sizeof(s->buf) / 2];
int bytes = sizeof(tmp);
short *tmp;
int bytes = WAV_BUF_SIZE; /* in bytes */
off_t here;
/* Send a frame from the file to the appropriate channel */
struct wav_desc *fs = (struct wav_desc *)s->private;
here = ftello(s->f);
if ((s->maxlen - here) < bytes)
bytes = s->maxlen - here;
if (fs->maxlen - here < bytes) /* truncate if necessary */
bytes = fs->maxlen - here;
if (bytes < 0)
bytes = 0;
/* ast_log(LOG_DEBUG, "here: %d, maxlen: %d, bytes: %d\n", here, s->maxlen, bytes); */
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_SLINEAR;
s->fr.mallocd = 0;
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, bytes);
if ( (res = fread(tmp, 1, bytes, s->f)) <= 0 ) {
if (res) {
if ( (res = fread(s->fr.data, 1, s->fr.datalen, s->f)) <= 0 ) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
}
return NULL;
}
s->fr.datalen = res;
s->fr.samples = samples = res / 2;
tmp = (short *)(s->fr.data);
#if __BYTE_ORDER == __BIG_ENDIAN
for( x = 0; x < sizeof(tmp)/2; x++) tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
/* file format is little endian so we need to swap */
for( x = 0; x < samples; x++)
tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
#endif
if (s->needsgain) {
for (x=0;x<sizeof(tmp)/2;x++)
if (fs->needsgain) {
for (x=0; x < samples; x++) {
if (tmp[x] & ((1 << GAIN) - 1)) {
/* If it has data down low, then it's not something we've artificially increased gain
on, so we don't need to gain adjust it */
s->needsgain = 0;
fs->needsgain = 0;
break;
}
}
if (s->needsgain) {
for (x=0;x<sizeof(tmp)/2;x++) {
s->buf[x] = tmp[x] >> GAIN;
}
} else {
memcpy(s->buf, tmp, sizeof(s->buf));
if (fs->needsgain) {
for (x=0; x < samples; x++)
tmp[x] = tmp[x] >> GAIN;
}
}
delay = res / 2;
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_SLINEAR;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.datalen = res;
s->fr.data = s->buf;
s->fr.mallocd = 0;
s->fr.samples = delay;
*whennext = delay;
*whennext = samples;
return &s->fr;
}
@ -470,6 +410,9 @@ static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
int x;
short tmp[8000], *tmpi;
float tmpf;
struct wav_desc *s = (struct wav_desc *)fs->private;
int res;
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
@ -489,33 +432,28 @@ static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
printf("Data Length: %d\n", f->datalen);
#endif
if (fs->buf) {
tmpi = f->data;
/* Volume adjust here to accomodate */
for (x=0;x<f->datalen/2;x++) {
tmpf = ((float)tmpi[x]) * ((float)(1 << GAIN));
if (tmpf > 32767.0)
tmpf = 32767.0;
if (tmpf < -32768.0)
tmpf = -32768.0;
tmp[x] = tmpf;
tmp[x] &= ~((1 << GAIN) - 1);
tmpi = f->data;
/* Volume adjust here to accomodate */
for (x=0;x<f->datalen/2;x++) {
tmpf = ((float)tmpi[x]) * ((float)(1 << GAIN));
if (tmpf > 32767.0)
tmpf = 32767.0;
if (tmpf < -32768.0)
tmpf = -32768.0;
tmp[x] = tmpf;
tmp[x] &= ~((1 << GAIN) - 1);
#if __BYTE_ORDER == __BIG_ENDIAN
tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
tmp[x] = (tmp[x] << 8) | ((tmp[x] & 0xff00) >> 8);
#endif
}
if ((fwrite(tmp, 1, f->datalen, fs->f) != f->datalen) ) {
ast_log(LOG_WARNING, "Bad write (%d): %s\n", errno, strerror(errno));
return -1;
}
} else {
ast_log(LOG_WARNING, "Cannot write data to file.\n");
}
if ((res = fwrite(tmp, 1, f->datalen, fs->f)) != f->datalen ) {
ast_log(LOG_WARNING, "Bad write (%d): %s\n", res, strerror(errno));
return -1;
}
fs->bytes += f->datalen;
s->bytes += f->datalen;
update_header(fs->f);
return 0;
@ -560,43 +498,45 @@ static off_t wav_tell(struct ast_filestream *fs)
return (offset - 44)/2;
}
static char *wav_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format wav_f = {
.name = "wav",
.exts = "wav",
.format = AST_FORMAT_SLINEAR,
.open = wav_open,
.rewrite = wav_rewrite,
.write = wav_write,
.seek = wav_seek,
.trunc = wav_trunc,
.tell = wav_tell,
.read = wav_read,
.close = wav_close,
.buf_size = WAV_BUF_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct wav_desc),
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_SLINEAR,
wav_open,
wav_rewrite,
wav_write,
wav_seek,
wav_trunc,
wav_tell,
wav_read,
wav_close,
wav_getcomment);
return ast_format_register(&wav_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(wav_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Microsoft WAV format (8000hz Signed Linear)";
}
char *key()
{
return ASTERISK_GPL_KEY;

264
formats/format_wav_gsm.c
Unescape View File

@ -54,6 +54,12 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
/* Portions of the conversion code are by guido@sienanet.it */
#define GSM_FRAME_SIZE 33
#define MSGSM_FRAME_SIZE 65
#define MSGSM_DATA_OFS 60 /* offset of data bytes */
#define GSM_SAMPLES 160 /* samples in a GSM block */
#define MSGSM_SAMPLES (2*GSM_SAMPLES) /* samples in an MSGSM block */
/* begin binary data: */
char msgsm_silence[] = /* 65 */
{0x48,0x17,0xD6,0x84,0x02,0x80,0x24,0x49,0x92,0x24,0x89,0x02,0x80,0x24,0x49
@ -63,29 +69,12 @@ char msgsm_silence[] = /* 65 */
,0x92,0x24,0x49,0x92,0x00};
/* end binary data. size = 65 bytes */
struct ast_filestream {
void *reserved[AST_RESERVED_POINTERS];
struct wavg_desc {
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
FILE *f; /* Descriptor */
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
unsigned char gsm[66]; /* Two Real GSM Frames */
int foffset;
int secondhalf; /* Are we on the second half */
struct timeval last;
};
AST_MUTEX_DEFINE_STATIC(wav_lock);
static int glistcnt = 0;
static char *name = "wav49";
static char *desc = "Microsoft WAV format (Proprietary GSM)";
static char *exts = "WAV|wav49";
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define htoll(b) (b)
#define htols(b) (b)
@ -173,7 +162,7 @@ static int check_header(FILE *f)
ast_log(LOG_WARNING, "Read failed (freq)\n");
return -1;
}
if (ltohl(freq) != 8000) {
if (ltohl(freq) != DEFAULT_SAMPLE_RATE) {
ast_log(LOG_WARNING, "Unexpected freqency %d\n", ltohl(freq));
return -1;
}
@ -236,7 +225,7 @@ static int update_header(FILE *f)
fseek(f, 0, SEEK_END);
end = ftello(f);
/* in a gsm WAV, data starts 60 bytes in */
bytes = end - 60;
bytes = end - MSGSM_DATA_OFS;
datalen = htoll((bytes + 1) & ~0x1);
filelen = htoll(52 + ((bytes + 1) & ~0x1));
if (cur < 0) {
@ -268,7 +257,7 @@ static int update_header(FILE *f)
static int write_header(FILE *f)
{
unsigned int hz=htoll(8000);
unsigned int hz=htoll(DEFAULT_SAMPLE_RATE); /* XXX the following are relate to DEFAULT_SAMPLE_RATE ? */
unsigned int bhz = htoll(1625);
unsigned int hs = htoll(20);
unsigned short fmt = htols(49);
@ -347,119 +336,78 @@ static int write_header(FILE *f)
return 0;
}
static struct ast_filestream *wav_open(FILE *f)
static int wav_open(struct ast_filestream *s)
{
/* 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 (check_header(f)) {
free(tmp);
return NULL;
}
if (ast_mutex_lock(&wav_lock)) {
ast_log(LOG_WARNING, "Unable to lock wav list\n");
free(tmp);
return NULL;
}
tmp->f = f;
tmp->fr.data = tmp->gsm;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_GSM;
/* datalen will vary for each frame */
tmp->fr.src = name;
tmp->fr.mallocd = 0;
tmp->secondhalf = 0;
glistcnt++;
ast_mutex_unlock(&wav_lock);
ast_update_use_count();
}
return tmp;
struct wavg_desc *fs = (struct wavg_desc *)s->private;
if (check_header(s->f))
return -1;
fs->secondhalf = 0; /* not strictly necessary */
return 0;
}
static struct ast_filestream *wav_rewrite(FILE *f, const char *comment)
static int wav_rewrite(struct ast_filestream *s, 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 (write_header(f)) {
free(tmp);
return NULL;
}
if (ast_mutex_lock(&wav_lock)) {
ast_log(LOG_WARNING, "Unable to lock wav list\n");
free(tmp);
return NULL;
}
tmp->f = f;
glistcnt++;
ast_mutex_unlock(&wav_lock);
ast_update_use_count();
} else
ast_log(LOG_WARNING, "Out of memory\n");
return tmp;
if (write_header(s->f))
return -1;
return 0;
}
static void wav_close(struct ast_filestream *s)
{
char zero = 0;
if (ast_mutex_lock(&wav_lock)) {
ast_log(LOG_WARNING, "Unable to lock wav list\n");
return;
}
glistcnt--;
ast_mutex_unlock(&wav_lock);
ast_update_use_count();
/* Pad to even length */
fseek(s->f, 0, SEEK_END);
if (ftello(s->f) & 0x1)
fwrite(&zero, 1, 1, s->f);
fclose(s->f);
free(s);
s = NULL;
}
static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
{
int res;
char msdata[66];
/* Send a frame from the file to the appropriate channel */
struct wavg_desc *fs = (struct wavg_desc *)s->private;
s->fr.frametype = AST_FRAME_VOICE;
s->fr.subclass = AST_FORMAT_GSM;
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.samples = 160;
s->fr.datalen = 33;
s->fr.samples = GSM_SAMPLES;
s->fr.mallocd = 0;
if (s->secondhalf) {
FR_SET_BUF(&s->fr, s->buf, AST_FRIENDLY_OFFSET, GSM_FRAME_SIZE);
if (fs->secondhalf) {
/* Just return a frame based on the second GSM frame */
s->fr.data = s->gsm + 33;
s->fr.data = (char *)s->fr.data + GSM_FRAME_SIZE;
s->fr.offset += GSM_FRAME_SIZE;
} else {
if ((res = fread(msdata, 1, 65, s->f)) != 65) {
/* read and convert */
char msdata[MSGSM_FRAME_SIZE];
int res;
if ((res = fread(msdata, 1, MSGSM_FRAME_SIZE, s->f)) != MSGSM_FRAME_SIZE) {
if (res && (res != 1))
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
}
/* Convert from MS format to two real GSM frames */
conv65(msdata, s->gsm);
s->fr.data = s->gsm;
conv65(msdata, s->fr.data);
}
s->secondhalf = !s->secondhalf;
*whennext = 160;
fs->secondhalf = !fs->secondhalf;
*whennext = GSM_SAMPLES;
return &s->fr;
}
static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
static int wav_write(struct ast_filestream *s, struct ast_frame *f)
{
int res;
char msdata[66];
int len =0;
int alreadyms=0;
int len;
int size;
struct wavg_desc *fs = (struct wavg_desc *)s->private;
if (f->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
return -1;
@ -468,65 +416,70 @@ static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
ast_log(LOG_WARNING, "Asked to write non-GSM frame (%d)!\n", f->subclass);
return -1;
}
if (!(f->datalen % 65))
alreadyms = 1;
while(len < f->datalen) {
if (alreadyms) {
/* XXX this might fail... if the input is a multiple of MSGSM_FRAME_SIZE
* we assume it is already in the correct format.
*/
if (!(f->datalen % MSGSM_FRAME_SIZE)) {
size = MSGSM_FRAME_SIZE;
fs->secondhalf = 0;
} else {
size = GSM_FRAME_SIZE;
}
for (len = 0; len < f->datalen ; len += size) {
int res;
char *src, msdata[MSGSM_FRAME_SIZE];
if (fs->secondhalf) { /* second half of raw gsm to be converted */
memcpy(s->buf + GSM_FRAME_SIZE, f->data + len, GSM_FRAME_SIZE);
conv66(s->buf, msdata);
src = msdata;
fs->secondhalf = 0;
if ((res = fwrite(f->data + len, 1, 65, fs->f)) != 65) {
ast_log(LOG_WARNING, "Bad write (%d/65): %s\n", res, strerror(errno));
return -1;
}
update_header(fs->f);
len += 65;
} else {
if (fs->secondhalf) {
memcpy(fs->gsm + 33, f->data + len, 33);
conv66(fs->gsm, msdata);
if ((res = fwrite(msdata, 1, 65, fs->f)) != 65) {
ast_log(LOG_WARNING, "Bad write (%d/65): %s\n", res, strerror(errno));
return -1;
}
update_header(fs->f);
} else {
/* Copy the data and do nothing */
memcpy(fs->gsm, f->data + len, 33);
}
fs->secondhalf = !fs->secondhalf;
len += 33;
} else if (size == GSM_FRAME_SIZE) { /* first half of raw gsm */
memcpy(s->buf, f->data + len, GSM_FRAME_SIZE);
src = NULL; /* nothing to write */
fs->secondhalf = 1;
} else { /* raw msgsm data */
src = f->data + len;
}
if (src && (res = fwrite(src, 1, size, s->f)) != size) {
ast_log(LOG_WARNING, "Bad write (%d/65): %s\n", res, strerror(errno));
return -1;
}
update_header(s->f); /* XXX inefficient! */
}
return 0;
}
static int wav_seek(struct ast_filestream *fs, off_t sample_offset, int whence)
{
off_t offset=0,distance,cur,min,max;
min = 60;
cur = ftello(fs->f);
off_t offset=0, distance, max;
struct wavg_desc *s = (struct wavg_desc *)fs->private;
off_t min = MSGSM_DATA_OFS;
off_t cur = ftello(fs->f);
fseek(fs->f, 0, SEEK_END);
max = ftello(fs->f);
/* I'm getting sloppy here, I'm only going to go to even splits of the 2
* frames, if you want tighter cuts use format_gsm, format_pcm, or format_wav */
distance = (sample_offset/320) * 65;
if(whence == SEEK_SET)
max = ftello(fs->f); /* XXX ideally, should round correctly */
/* Compute the distance in bytes, rounded to the block size */
distance = (sample_offset/MSGSM_SAMPLES) * MSGSM_FRAME_SIZE;
if (whence == SEEK_SET)
offset = distance + min;
else if(whence == SEEK_CUR || whence == SEEK_FORCECUR)
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
offset = distance + cur;
else if(whence == SEEK_END)
else if (whence == SEEK_END)
offset = max - distance;
/* always protect against seeking past end of header */
offset = (offset < min)?min:offset;
if (offset < min)
offset = min;
if (whence != SEEK_FORCECUR) {
offset = (offset > max)?max:offset;
if (offset > max)
offset = max;
} else if (offset > max) {
int i;
fseek(fs->f, 0, SEEK_END);
for (i=0; i< (offset - max) / 65; i++) {
fwrite(msgsm_silence, 1, 65, fs->f);
for (i=0; i< (offset - max) / MSGSM_FRAME_SIZE; i++) {
fwrite(msgsm_silence, 1, MSGSM_FRAME_SIZE, fs->f);
}
}
fs->secondhalf = 0;
s->secondhalf = 0;
return fseeko(fs->f, offset, SEEK_SET);
}
@ -543,46 +496,49 @@ static off_t wav_tell(struct ast_filestream *fs)
offset = ftello(fs->f);
/* since this will most likely be used later in play or record, lets stick
* to that level of resolution, just even frames boundaries */
return (offset - 52)/65*320;
/* XXX why 52 ? */
return (offset - 52)/MSGSM_FRAME_SIZE*MSGSM_SAMPLES;
}
static char *wav_getcomment(struct ast_filestream *s)
{
return NULL;
}
static struct ast_format_lock me = { .usecnt = -1 };
static const struct ast_format wav49_f = {
.name = "wav49",
.exts = "WAV|wav49",
.format = AST_FORMAT_GSM,
.open = wav_open,
.rewrite = wav_rewrite,
.write = wav_write,
.seek = wav_seek,
.trunc = wav_trunc,
.tell = wav_tell,
.read = wav_read,
.close = wav_close,
.buf_size = 2*GSM_FRAME_SIZE + AST_FRIENDLY_OFFSET,
.desc_size = sizeof(struct wavg_desc),
.lockp = &me,
};
int load_module()
{
return ast_format_register(name, exts, AST_FORMAT_GSM,
wav_open,
wav_rewrite,
wav_write,
wav_seek,
wav_trunc,
wav_tell,
wav_read,
wav_close,
wav_getcomment);
return ast_format_register(&wav49_f);
}
int unload_module()
{
return ast_format_unregister(name);
return ast_format_unregister(wav49_f.name);
}
int usecount()
{
return glistcnt;
return me.usecnt;
}
char *description()
{
return desc;
return "Microsoft WAV format (Proprietary GSM)";
}
char *key()
{
return ASTERISK_GPL_KEY;

113
include/asterisk/file.h
Unescape View File

@ -40,27 +40,108 @@ extern "C" {
#define AST_DIGIT_ANY "0123456789#*ABCD"
#define AST_DIGIT_ANYNUM "0123456789"
#define SEEK_FORCECUR 10
/*! structure used for lock and refcount of format handlers.
* Should not be here, but this is a temporary workaround
* until we implement a more general mechanism.
* The format handler should include a pointer to
* this structure.
* As a trick, if usecnt is initialized with -1,
* ast_format_register will init the mutex for you.
*/
struct ast_format_lock {
ast_mutex_t lock;
int usecnt; /* number of active clients */
};
/*!
* Each supported file format is described by the following fields.
* Not all are necessary, the support routine implement default
* values for some of them.
* A handler typically fills a structure initializing the desired
* fields, and then calls ast_format_register() with the (readonly)
* structure as an argument.
*/
struct ast_format {
char name[80]; /*! Name of format */
char exts[80]; /*! Extensions (separated by | if more than one)
this format can read. First is assumed for writing (e.g. .mp3) */
int format; /*! Format of frames it uses/provides (one only) */
/*! Prepare an input stream for playback. Return 0 on success, -1 on error.
* The FILE is already open (in s->f) so this function only needs to perform
* any applicable validity checks on the file. If none is required, the
* function can be omitted.
*/
int (*open)(struct ast_filestream *s);
/*! Prepare a stream for output, and comment it appropriately if applicable.
* Return 0 on success, -1 on error. Same as the open, the FILE is already
* open so the function just needs to prepare any header and other fields,
* if any. The function can be omitted if nothing is needed.
*/
int (*rewrite)(struct ast_filestream *s, const char *comment);
/*! Write a frame to a channel */
int (*write)(struct ast_filestream *, struct ast_frame *);
/*! seek num samples into file, whence - like a normal seek but with offset in samples */
int (*seek)(struct ast_filestream *, off_t, int);
int (*trunc)(struct ast_filestream *fs); /*! trunc file to current position */
off_t (*tell)(struct ast_filestream *fs); /*! tell current position */
/*! Read the next frame from the filestream (if available) and report
* when to get next frame (in samples)
*/
struct ast_frame * (*read)(struct ast_filestream *, int *whennext);
/*! Do any closing actions, if any. The descriptor and structure are closed
* and destroyed by the generic routines, so they must not be done here. */
void (*close)(struct ast_filestream *);
char * (*getcomment)(struct ast_filestream *); /*! Retrieve file comment */
AST_LIST_ENTRY(ast_format) list; /*! Link */
/*!
* If the handler needs a buffer (for read, typically)
* and/or a private descriptor, put here the
* required size (in bytes) and the support routine will allocate them
* for you, pointed by s->buf and s->private, respectively.
* When allocating a buffer, remember to leave AST_FRIENDLY_OFFSET
* spare bytes at the bginning.
*/
int buf_size; /*! size of frame buffer, if any, aligned to 8 bytes. */
int desc_size; /*! size of private descriptor, if any */
struct ast_format_lock *lockp;
};
/* Defined by individual formats. First item MUST be a
pointer for use by the stream manager */
struct ast_filestream;
/*
* This structure is allocated by file.c in one chunk,
* together with buf_size and desc_size bytes of memory
* to be used for private purposes (e.g. buffers etc.)
*/
struct ast_filestream {
/*! Everybody reserves a block of AST_RESERVED_POINTERS pointers for us */
struct ast_format *fmt; /* need to write to the lock and usecnt */
int flags;
mode_t mode;
char *filename;
char *realfilename;
/*! Video file stream */
struct ast_filestream *vfs;
/*! Transparently translate from another format -- just once */
struct ast_trans_pvt *trans;
struct ast_tranlator_pvt *tr;
int lastwriteformat;
int lasttimeout;
struct ast_channel *owner;
FILE *f;
struct ast_frame fr; /* frame produced by read, typically */
char *buf; /* buffer pointed to by ast_frame; */
void *private; /* pointer to private buffer */
};
#define SEEK_FORCECUR 10
/*! Registers a new file format */
/*! Register a new file format capability
* Adds a format to asterisk's format abilities. Fill in the fields, and it will work. For examples, look at some of the various format code.
* Adds a format to asterisk's format abilities.
* returns 0 on success, -1 on failure
*/
int ast_format_register(const char *name, const char *exts, int format,
struct ast_filestream * (*open)(FILE *f),
struct ast_filestream * (*rewrite)(FILE *f, const char *comment),
int (*write)(struct ast_filestream *, struct ast_frame *),
int (*seek)(struct ast_filestream *, off_t offset, int whence),
int (*trunc)(struct ast_filestream *),
off_t (*tell)(struct ast_filestream *),
struct ast_frame * (*read)(struct ast_filestream *, int *timetonext),
void (*close)(struct ast_filestream *),
char * (*getcomment)(struct ast_filestream *));
int ast_format_register(const struct ast_format *f);
/*! Unregisters a file format */
/*!

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