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Handle more complex wav files

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2108 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-02-02 06:34:27 +00:00
parent 28d980de3d
commit 1e3c163233
1 changed files with 28 additions and 11 deletions
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39
formats/format_wav.c
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@@ -128,7 +128,7 @@ static int check_header(int fd)
ast_log(LOG_WARNING, "Read failed (formtype)\n");
return -1;
}
if (ltohl(hsize) != 16) {
if (ltohl(hsize) < 16) {
ast_log(LOG_WARNING, "Unexpected header size %d\n", ltohl(hsize));
return -1;
}
@@ -174,19 +174,36 @@ static int check_header(int fd)
ast_log(LOG_WARNING, "Read failed (Bits Per Sample): %d\n", ltohs(bisam));
return -1;
}
/* Begin data chunk */
if (read(fd, &data, 4) != 4) {
ast_log(LOG_WARNING, "Read failed (data)\n");
// Skip any additional header
if ( lseek(fd,ltohl(hsize)-16,SEEK_CUR) == -1 ) {
ast_log(LOG_WARNING, "Failed to skip remaining header bytes: %d\n", ltohl(hsize)-16 );
return -1;
}
if (memcmp(&data, "data", 4)) {
ast_log(LOG_WARNING, "Does not say data\n");
return -1;
}
/* Data has the actual length of data in it */
if (read(fd, &data, 4) != 4) {
// Skip any facts and get the first data block
for(;;)
{
char buf[4];
/* Begin data chunk */
if (read(fd, &buf, 4) != 4) {
ast_log(LOG_WARNING, "Read failed (data)\n");
return -1;
}
/* Data has the actual length of data in it */
if (read(fd, &data, 4) != 4) {
ast_log(LOG_WARNING, "Read failed (data)\n");
return -1;
}
data = ltohl(data);
if( memcmp(buf, "data", 4) == 0 ) break;
if( memcmp(buf, "fact", 4) != 0 ) {
ast_log(LOG_WARNING, "Unknown block - not fact or data\n");
return -1;
}
if ( lseek(fd,data,SEEK_CUR) == -1 ) {
ast_log(LOG_WARNING, "Failed to skip fact block: %d\n", data );
return -1;
}
}
#if 0
curpos = lseek(fd, 0, SEEK_CUR);
@@ -194,7 +211,7 @@ static int check_header(int fd)
lseek(fd, curpos, SEEK_SET);
truelength -= curpos;
#endif
return ltohl(data);
return data;
}
static int update_header(int fd)