diff options
Diffstat (limited to 'libavformat/internal.h')
| -rw-r--r-- | libavformat/internal.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libavformat/internal.h b/libavformat/internal.h index 743ee981d8..be3fbb2b2f 100644 --- a/libavformat/internal.h +++ b/libavformat/internal.h @@ -40,4 +40,23 @@ void av_read_frame_flush(AVFormatContext *s); /** Gets the current time since NTP epoch in microseconds. */ uint64_t ff_ntp_time(void); +/** + * Probes a bytestream to determine the input format. Each time a probe returns + * with a score that is too low, the probe buffer size is increased and another + * attempt is made. When the maximum probe size is reached, the input format + * with the highest score is returned. + * + * @param pb the bytestream to probe, it may be closed and opened again + * @param fmt the input format is put here + * @param filename the filename of the stream + * @param logctx the log context + * @param offset the offset within the bytestream to probe from + * @param max_probe_size the maximum probe buffer size (zero for default) + * @return 0 in case of success, a negative value corresponding to an + * AVERROR code otherwise + */ +int ff_probe_input_buffer(ByteIOContext **pb, AVInputFormat **fmt, + const char *filename, void *logctx, + unsigned int offset, unsigned int max_probe_size); + #endif /* AVFORMAT_INTERNAL_H */ |