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| author | Niklas Haas <git@haasn.dev> | 2024-10-14 15:16:26 +0200 |
|---|---|---|
| committer | Niklas Haas <git@haasn.dev> | 2024-10-23 23:06:55 +0200 |
| commit | b03c758600f0767d54ae663dadc8f698b79cd1c4 (patch) | |
| tree | d6af910da7be33f57e5a9ad27ac87237ddd92bd4 | |
| parent | 5e50a56b9c4998838005ddaaed1422a9d717c50f (diff) | |
| download | ffmpeg-b03c758600f0767d54ae663dadc8f698b79cd1c4.tar.gz | |
swscale: add sws_is_noop()
Exactly what it says on the tin.
Sponsored-by: Sovereign Tech Fund
Signed-off-by: Niklas Haas <git@haasn.dev>
| -rw-r--r-- | doc/APIchanges | 3 | ||||
| -rw-r--r-- | libswscale/swscale.h | 6 | ||||
| -rw-r--r-- | libswscale/utils.c | 14 | ||||
| -rw-r--r-- | libswscale/version.h | 2 |
4 files changed, 24 insertions, 1 deletions
diff --git a/doc/APIchanges b/doc/APIchanges index 7d94b7bf97..eeb859b873 100644 --- a/doc/APIchanges +++ b/doc/APIchanges @@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07 API changes, most recent first: +2024-10-23 - xxxxxxxxxx - lsws 8.9.100 - swscale.h + Add sws_is_noop(). + 2024-10-23 - xxxxxxxxxx - lsws 8.8.100 - swscale.h Add frame property testing API: - sws_test_format() diff --git a/libswscale/swscale.h b/libswscale/swscale.h index e3362d5328..50c705ae06 100644 --- a/libswscale/swscale.h +++ b/libswscale/swscale.h @@ -140,6 +140,12 @@ int sws_test_transfer(enum AVColorTransferCharacteristic trc, int output); */ int sws_test_frame(const AVFrame *frame, int output); +/** + * Check if a given conversion is a noop. Returns a positive integer if + * no operation needs to be performed, 0 otherwise. + */ +int sws_is_noop(const AVFrame *dst, const AVFrame *src); + /* values for the flags, the stuff on the command line is different */ #define SWS_FAST_BILINEAR 1 #define SWS_BILINEAR 2 diff --git a/libswscale/utils.c b/libswscale/utils.c index c9c80fdb79..3008d4db4d 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -2777,3 +2777,17 @@ int sws_test_frame(const AVFrame *frame, int output) return 1; } + +int sws_is_noop(const AVFrame *dst, const AVFrame *src) +{ + for (int field = 0; field < 2; field++) { + SwsFormat dst_fmt = ff_fmt_from_frame(dst, field); + SwsFormat src_fmt = ff_fmt_from_frame(src, field); + if (!ff_fmt_equal(&dst_fmt, &src_fmt)) + return 0; + if (!dst_fmt.interlaced) + break; + } + + return 1; +} diff --git a/libswscale/version.h b/libswscale/version.h index c0610fec1e..109bb5cfd9 100644 --- a/libswscale/version.h +++ b/libswscale/version.h @@ -28,7 +28,7 @@ #include "version_major.h" -#define LIBSWSCALE_VERSION_MINOR 8 +#define LIBSWSCALE_VERSION_MINOR 9 #define LIBSWSCALE_VERSION_MICRO 100 #define LIBSWSCALE_VERSION_INT AV_VERSION_INT(LIBSWSCALE_VERSION_MAJOR, \ |