Quoting Sebastian Hubbard (2020-02-20 22:43:53)
> Added id3v2_buf and id3v2_buf_size fields to AVProbeData. When an id3v2
> tag is found at the start of probed content, id3v2_buf is filled with
> a pointer to the start of the tag bytes, and id3v2_buf_size with the
> number of bytes in the tag.
>
> ac3_eac3_probe checks the tag when present for a private frame with an
> owner identifier of com.apple.streaming.audioDescription, which
> signals that the file is encrypted with an Apple DRM scheme. The CRC
> checksums for such files are for the content post-decryption, and with
> this change they are skipped when Apple DRM is detected. This enables
> ffprobe to detect the stream type, even though it will not be playable.
>
> Signed-off-by: Sebastian Hubbard <s...@google.com>
> ---
> diff --git a/libavformat/avformat.h b/libavformat/avformat.h
> index 9b9b634ec3..afd1b67b5c 100644
> --- a/libavformat/avformat.h
> +++ b/libavformat/avformat.h
> @@ -448,6 +448,8 @@ typedef struct AVProbeData {
> unsigned char *buf; /**< Buffer must have AVPROBE_PADDING_SIZE of extra
> allocated bytes filled with zero. */
> int buf_size; /**< Size of buf except extra allocated bytes */
> const char *mime_type; /**< mime_type, when known. */
> + unsigned char *id3v2_buf; /**< Bytes of id3v2 tag if one was found at
> start of file. */
> + int id3v2_buf_size; /**< Size of id3v2_buf */
You can't just add fields here, it's an ABI break.
--
Anton Khirnov
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