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Use FILE * instead of fd for files to support buffering

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6801 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2005-10-16 16:12:51 +00:00
parent d2025ad2a1
commit d499a85f05
17 changed files with 406 additions and 366 deletions
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52
formats/format_pcm_alaw.c
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@@ -54,7 +54,7 @@ struct ast_filestream {
/* Believe it or not, we must decode/recode to account for the
weird MS format */
/* This is what a filestream means to us */
int fd; /* Descriptor */
FILE *f; /* Descriptor */
struct ast_frame fr; /* Frame information */
char waste[AST_FRIENDLY_OFFSET]; /* Buffer for sending frames, etc */
char empty; /* Empty character */
@@ -90,7 +90,7 @@ static unsigned long get_time(void)
}
#endif
static struct ast_filestream *pcm_open(int fd)
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
@@ -103,7 +103,7 @@ static struct ast_filestream *pcm_open(int fd)
free(tmp);
return NULL;
}
tmp->fd = fd;
tmp->f = f;
tmp->fr.data = tmp->buf;
tmp->fr.frametype = AST_FRAME_VOICE;
tmp->fr.subclass = AST_FORMAT_ALAW;
@@ -120,7 +120,7 @@ static struct ast_filestream *pcm_open(int fd)
return tmp;
}
static struct ast_filestream *pcm_rewrite(int fd, const char *comment)
static struct ast_filestream *pcm_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
@@ -133,7 +133,7 @@ static struct ast_filestream *pcm_rewrite(int fd, const char *comment)
free(tmp);
return NULL;
}
tmp->fd = fd;
tmp->f = f;
#ifdef REALTIME_WRITE
tmp->start_time = get_time();
#endif
@@ -154,7 +154,7 @@ static void pcm_close(struct ast_filestream *s)
glistcnt--;
ast_mutex_unlock(&pcm_lock);
ast_update_use_count();
close(s->fd);
fclose(s->f);
free(s);
s = NULL;
}
@@ -169,7 +169,7 @@ static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext)
s->fr.offset = AST_FRIENDLY_OFFSET;
s->fr.mallocd = 0;
s->fr.data = s->buf;
if ((res = read(s->fd, s->buf, BUF_SIZE)) < 1) {
if ((res = fread(s->buf, 1, BUF_SIZE, s->f)) < 1) {
if (res)
ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
return NULL;
@@ -204,46 +204,41 @@ static int pcm_write(struct ast_filestream *fs, struct ast_frame *f)
/* 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( fs->fd, &stat_buf );
if( stat_buf.st_size > fpos )
{
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 )
{
if (stat_buf.st_size < fpos) {
/* fill the gap with 0x55 rather than 0. */
char buf[ 512 ];
unsigned long cur, to_write;
cur = stat_buf.st_size;
if( lseek( fs->fd, cur, SEEK_SET ) < 0 )
{
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 )
{
memset(buf, 0x55, 512);
while (cur < fpos) {
to_write = fpos - cur;
if( to_write > 512 )
{
if (to_write > 512) {
to_write = 512;
}
write( fs->fd, buf, to_write );
fwrite(buf, 1, to_write, fs->f);
cur += to_write;
}
}
if( lseek( fs->fd, fpos, SEEK_SET ) < 0 )
{
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 = write(fs->fd, f->data, f->datalen)) != f->datalen) {
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;
}
@@ -255,8 +250,9 @@ static int pcm_seek(struct ast_filestream *fs, long sample_offset, int whence)
off_t offset=0,min,cur,max;
min = 0;
cur = lseek(fs->fd, 0, SEEK_CUR);
max = lseek(fs->fd, 0, SEEK_END);
cur = ftell(fs->f);
fseek(fs->f, 0, SEEK_END);
max = ftell(fs->f);
if (whence == SEEK_SET)
offset = sample_offset;
else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
@@ -268,18 +264,18 @@ static int pcm_seek(struct ast_filestream *fs, long sample_offset, int whence)
}
/* Always protect against seeking past begining */
offset = (offset < min)?min:offset;
return lseek(fs->fd, offset, SEEK_SET);
return fseek(fs->f, offset, SEEK_SET);
}
static int pcm_trunc(struct ast_filestream *fs)
{
return ftruncate(fs->fd, lseek(fs->fd,0,SEEK_CUR));
return ftruncate(fileno(fs->f), ftell(fs->f));
}
static long pcm_tell(struct ast_filestream *fs)
{
off_t offset;
offset = lseek(fs->fd, 0, SEEK_CUR);
offset = ftell(fs->f);
return offset;
}