diff options
Diffstat (limited to 'libavformat/rmenc.c')
| -rw-r--r-- | libavformat/rmenc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavformat/rmenc.c b/libavformat/rmenc.c index 6d8fa43467..5d8f001931 100644 --- a/libavformat/rmenc.c +++ b/libavformat/rmenc.c @@ -44,6 +44,10 @@ typedef struct RMMuxContext { /* in ms */ #define BUFFER_DURATION 0 +/* the header needs at most 7 + 4 + 12 B */ +#define MAX_HEADER_SIZE (7 + 4 + 12) +/* UINT16_MAX is the maximal chunk size */ +#define MAX_PACKET_SIZE (UINT16_MAX - MAX_HEADER_SIZE) static void put_str(AVIOContext *s, const char *tag) @@ -389,6 +393,10 @@ static int rm_write_video(AVFormatContext *s, const uint8_t *buf, int size, int /* Well, I spent some time finding the meaning of these bits. I am not sure I understood everything, but it works !! */ #if 1 + if (size > MAX_PACKET_SIZE) { + avpriv_report_missing_feature(s, "Muxing packets larger than 64 kB"); + return AVERROR(ENOSYS); + } write_packet_header(s, stream, size + 7 + (size >= 0x4000)*4, key_frame); /* bit 7: '1' if final packet of a frame converted in several packets */ avio_w8(pb, 0x81); |