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Check read_packet before using it. 

Originally committed as revision 10588 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benoit Fouet 2007-09-26 11:32:51 +00:00
parent 0d2caa37c5
commit 602dd8f6c4
1 changed files with 3 additions and 1 deletions
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4
libavformat/aviobuf.c
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@ -263,7 +263,7 @@ void put_tag(ByteIOContext *s, const char *tag)
static void fill_buffer(ByteIOContext *s)
{
int len;
int len=0;
/* no need to do anything if EOF already reached */
if (s->eof_reached)
@ -275,6 +275,7 @@ static void fill_buffer(ByteIOContext *s)
s->checksum_ptr= s->buffer;
}
if(s->read_packet)
len = s->read_packet(s->opaque, s->buffer, s->buffer_size);
if (len <= 0) {
/* do not modify buffer if EOF reached so that a seek back can
@ -341,6 +342,7 @@ int get_buffer(ByteIOContext *s, unsigned char *buf, int size)
len = size;
if (len == 0) {
if(size > s->buffer_size && !s->update_checksum){
if(s->read_packet)
len = s->read_packet(s->opaque, buf, size);
if (len <= 0) {
/* do not modify buffer if EOF reached so that a seek back can