diff options
| -rw-r--r-- | libavformat/avio_internal.h | 7 | ||||
| -rw-r--r-- | libavformat/aviobuf.c | 8 |
2 files changed, 15 insertions, 0 deletions
diff --git a/libavformat/avio_internal.h b/libavformat/avio_internal.h index c8630ab66e..aff5564215 100644 --- a/libavformat/avio_internal.h +++ b/libavformat/avio_internal.h @@ -85,6 +85,13 @@ int ffio_rewind_with_probe_data(AVIOContext *s, unsigned char *buf, int buf_size uint64_t ffio_read_varlen(AVIOContext *bc); +/** + * Read size bytes from AVIOContext into buf. + * Check that exactly size bytes have been read. + * @return number of bytes read or AVERROR + */ +int ffio_read_size(AVIOContext *s, unsigned char *buf, int size); + /** @warning must be called before any I/O */ int ffio_set_buf_size(AVIOContext *s, int buf_size); diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c index 59f807cbd3..d3e3452954 100644 --- a/libavformat/aviobuf.c +++ b/libavformat/aviobuf.c @@ -496,6 +496,14 @@ int avio_read(AVIOContext *s, unsigned char *buf, int size) return size1 - size; } +int ffio_read_size(AVIOContext *s, unsigned char *buf, int size) +{ + int ret = avio_read(s, buf, size); + if (ret != size) + return AVERROR_INVALIDDATA; + return ret; +} + int ffio_read_indirect(AVIOContext *s, unsigned char *buf, int size, const unsigned char **data) { if (s->buf_end - s->buf_ptr >= size && !s->write_flag) { |