|
|
|
@ -19,6 +19,8 @@ |
|
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
|
|
|
*/ |
|
|
|
|
|
|
|
|
|
#include <inttypes.h> |
|
|
|
|
|
|
|
|
|
#include "avformat.h" |
|
|
|
|
#include "riff.h" |
|
|
|
|
|
|
|
|
@ -90,7 +92,7 @@ static int xwma_read_header(AVFormatContext *s, AVFormatParameters *ap) |
|
|
|
|
* codecs require extradata, so we provide our own fake extradata. |
|
|
|
|
* |
|
|
|
|
* First, check that there really was no extradata in the header. If |
|
|
|
|
* there was, then try to use, after asking the the user to provide a |
|
|
|
|
* there was, then try to use it, after asking the user to provide a |
|
|
|
|
* sample of this unusual file. |
|
|
|
|
*/ |
|
|
|
|
if (st->codec->extradata_size != 0) { |
|
|
|
@ -129,7 +131,7 @@ static int xwma_read_header(AVFormatContext *s, AVFormatParameters *ap) |
|
|
|
|
/* Quoting the MSDN xWMA docs on the dpds chunk: "Contains the
|
|
|
|
|
* decoded packet cumulative data size array, each element is the |
|
|
|
|
* number of bytes accumulated after the corresponding xWMA packet |
|
|
|
|
* is decoded in order" |
|
|
|
|
* is decoded in order." |
|
|
|
|
* |
|
|
|
|
* Each packet has size equal to st->codec->block_align, which in |
|
|
|
|
* all cases I saw so far was always 2230. Thus, we can use the |
|
|
|
@ -144,11 +146,13 @@ static int xwma_read_header(AVFormatContext *s, AVFormatParameters *ap) |
|
|
|
|
|
|
|
|
|
/* Compute the number of entries in the dpds chunk. */ |
|
|
|
|
if (size & 3) { /* Size should be divisible by four */ |
|
|
|
|
av_log(s, AV_LOG_WARNING, "dpds chunk size "PRId64" not divisible by 4\n", size); |
|
|
|
|
av_log(s, AV_LOG_WARNING, |
|
|
|
|
"dpds chunk size %"PRId64" not divisible by 4\n", size); |
|
|
|
|
} |
|
|
|
|
dpds_table_size = size / 4; |
|
|
|
|
if (dpds_table_size == 0 || dpds_table_size >= INT_MAX / 4) { |
|
|
|
|
av_log(s, AV_LOG_ERROR, "dpds chunk size "PRId64" invalid\n", size); |
|
|
|
|
av_log(s, AV_LOG_ERROR, |
|
|
|
|
"dpds chunk size %"PRId64" invalid\n", size); |
|
|
|
|
return -1; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|