diff options
| author | Vittorio Giovara <vittorio.giovara@gmail.com> | 2014-06-18 18:08:20 -0400 |
|---|---|---|
| committer | Vittorio Giovara <vittorio.giovara@gmail.com> | 2014-07-09 10:14:12 -0400 |
| commit | a54f03bf07da964a1b04b03b85bc39deba76efa4 (patch) | |
| tree | bc25fa712a44e0bb1afca2ce48edd99a88048110 | |
| parent | 33a7b453a8e1f090c694ea4f36769dc837be88f0 (diff) | |
display: add matrix flip api
| -rw-r--r-- | doc/APIchanges | 3 | ||||
| -rw-r--r-- | libavutil/display.c | 10 | ||||
| -rw-r--r-- | libavutil/display.h | 9 | ||||
| -rw-r--r-- | libavutil/version.h | 4 |
4 files changed, 24 insertions, 2 deletions
diff --git a/doc/APIchanges b/doc/APIchanges index 91bc290019..9535b88914 100644 --- a/doc/APIchanges +++ b/doc/APIchanges @@ -13,6 +13,9 @@ libavutil: 2013-12-xx API changes, most recent first: +2014-07-xx - xxxxxxx - lavu 53.18.0 - display.h + Add av_display_matrix_flip() to flip the transformation matrix. + 2014-07-xx - xxxxxxx - lavc 55.56.0 - dv_profile.h Add a public API for DV profile handling. diff --git a/libavutil/display.c b/libavutil/display.c index b2b98329a0..74aceb2847 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 ea762a4249..7e37627637 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 ef38404e05..a2625b5ee5 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -54,8 +54,8 @@ */ #define LIBAVUTIL_VERSION_MAJOR 53 -#define LIBAVUTIL_VERSION_MINOR 17 -#define LIBAVUTIL_VERSION_MICRO 1 +#define LIBAVUTIL_VERSION_MINOR 18 +#define LIBAVUTIL_VERSION_MICRO 0 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ LIBAVUTIL_VERSION_MINOR, \ |