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avformat/aviobuf: check if read_packet() exist before read_packet_wrapper()

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without it, read_packet_wrapper() will return AVERROR(EINVAL) and avio_read
will be failed.

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2021-12-03 12:07:34 +08:00
parent b236ef0a59
commit 3c74ffb01a
1 changed files with 1 additions and 1 deletions
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2
libavformat/aviobuf.c
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@ -646,7 +646,7 @@ int avio_read(AVIOContext *s, unsigned char *buf, int size)
while (size > 0) {
len = FFMIN(s->buf_end - s->buf_ptr, size);
if (len == 0 || s->write_flag) {
if((s->direct || size > s->buffer_size) && !s->update_checksum) {
if((s->direct || size > s->buffer_size) && !s->update_checksum && s->read_packet) {
// bypass the buffer and read data directly into buf
len = read_packet_wrapper(s, buf, size);
if (len == AVERROR_EOF) {