[FFmpeg-devel] [PATCH 1/3] lavf: add read_flush function to AVInputFormat vtable

[James Almer]

On 2/18/2020 9:21 PM, rcombs wrote:
> ---
>  libavformat/avformat.h | 6 ++++++
>  libavformat/utils.c    | 4 ++++
>  libavformat/version.h  | 4 ++--
>  3 files changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/avformat.h b/libavformat/avformat.h
> index 9b9b634ec3..1412119342 100644
> --- a/libavformat/avformat.h
> +++ b/libavformat/avformat.h
> @@ -780,6 +780,12 @@ typedef struct AVInputFormat {
>       * @see avdevice_capabilities_free() for more details.
>       */
>      int (*free_device_capabilities)(struct AVFormatContext *s, struct AVDeviceCapabilitiesQuery *caps);
> +
> +    /**
> +     * Flush demuxer-internal buffers ahead of a discontinuity in the input byte stream.
> +     * @see avformat_flush() for more details.
> +     */
> +    void (*read_flush)(struct AVFormatContext *s);
>  } AVInputFormat;
>  /**
>   * @}
> diff --git a/libavformat/utils.c b/libavformat/utils.c
> index 123d67800b..c5fbe74c54 100644
> --- a/libavformat/utils.c
> +++ b/libavformat/utils.c
> @@ -2611,6 +2611,10 @@ int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
>  int avformat_flush(AVFormatContext *s)
>  {
>      ff_read_frame_flush(s);
> +
> +    if (s->iformat->read_flush)
> +        s->iformat->read_flush(s);
> +
>      return 0;
>  }
>  
> diff --git a/libavformat/version.h b/libavformat/version.h
> index 94fa57614d..741f2e30c5 100644
> --- a/libavformat/version.h
> +++ b/libavformat/version.h
> @@ -32,8 +32,8 @@
>  // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
>  // Also please add any ticket numbers that you believe might be affected here
>  #define LIBAVFORMAT_VERSION_MAJOR  58
> -#define LIBAVFORMAT_VERSION_MINOR  38
> -#define LIBAVFORMAT_VERSION_MICRO 101
> +#define LIBAVFORMAT_VERSION_MINOR  39
> +#define LIBAVFORMAT_VERSION_MICRO 100

You added a field in the non-public part of AVInputFormat, so no need to
bump lavf version.

>  
>  #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
>                                                 LIBAVFORMAT_VERSION_MINOR, \
>