On Wed, Jun 18, 2014 at 6:08 PM, Vittorio Giovara
<vittorio.giov...@gmail.com> wrote:
> ---
> doc/APIchanges | 3 +++
> libavutil/display.c | 10 ++++++++++
> libavutil/display.h | 9 +++++++++
> libavutil/version.h | 2 +-
> 4 files changed, 23 insertions(+), 1 deletion(-)
>
> diff --git a/doc/APIchanges b/doc/APIchanges
> index 51a2ff5..22acf95 100644
> --- a/doc/APIchanges
> +++ b/doc/APIchanges
> @@ -13,6 +13,9 @@ libavutil: 2013-12-xx
>
> API changes, most recent first:
>
> +2014-05-xx - xxxxxxx - lavu 53.17.0 - display.h
> + Add av_display_matrix_flip() to flip the transformation matrix.
> +
> 2014-xx-xx - xxxxxxx - lavf 55.20.0 - avformat.h
> The proper way for providing a hint about the desired timebase to the
> muxers
> is now setting AVStream.time_base, instead of AVStream.codec.time_base as
> was
> diff --git a/libavutil/display.c b/libavutil/display.c
> index b2b9832..74aceb2 100644
> --- a/libavutil/display.c
> +++ b/libavutil/display.c
> @@ -63,3 +63,13 @@ void av_display_rotation_set(int32_t matrix[9], double
> angle)
> matrix[4] = CONV_DB(c);
> matrix[8] = 1 << 30;
> }
> +
> +void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip)
> +{
> + int i;
> + const int flip[] = { 1 - 2 * (!!hflip), 1 - 2 * (!!vflip), 1 };
> +
> + if (hflip || vflip)
> + for (i = 0; i < 9; i++)
> + matrix[i] *= flip[i % 3];
> +}
> diff --git a/libavutil/display.h b/libavutil/display.h
> index ea762a4..7e37627 100644
> --- a/libavutil/display.h
> +++ b/libavutil/display.h
> @@ -74,4 +74,13 @@ double av_display_rotation_get(const int32_t matrix[9]);
> */
> void av_display_rotation_set(int32_t matrix[9], double angle);
>
> +/**
> + * Flip the input matrix horizontally and/or vertically.
> + *
> + * @param matrix an allocated transformation matrix
> + * @param hflip whether the matrix should be flipped horizontally
> + * @param vflip whether the matrix should be flipped vertically
> + */
> +void av_display_matrix_flip(int32_t matrix[9], int hflip, int vflip);
> +
> #endif /* AVUTIL_DISPLAY_H */
> diff --git a/libavutil/version.h b/libavutil/version.h
> index 427409f..a4384b3 100644
> --- a/libavutil/version.h
> +++ b/libavutil/version.h
> @@ -54,7 +54,7 @@
> */
>
> #define LIBAVUTIL_VERSION_MAJOR 53
> -#define LIBAVUTIL_VERSION_MINOR 16
> +#define LIBAVUTIL_VERSION_MINOR 17
> #define LIBAVUTIL_VERSION_MICRO 0
>
> #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
> --
> 1.8.3.2
>
Ping on the set.
--
Vittorio
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