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| author | Paul B Mahol <onemda@gmail.com> | 2023-08-20 17:36:45 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2023-08-24 22:20:06 +0200 |
| commit | 52ebb15ec1a9c5c80548262750ba07bde816cdf2 (patch) | |
| tree | d617f7bc9085bc134793260a2ce666eb683f17d0 /libavfilter/af_afade.c | |
| parent | e41bd6e65e1485fd1b44540638d06638406be2f4 (diff) | |
| download | ffmpeg-52ebb15ec1a9c5c80548262750ba07bde816cdf2.tar.gz | |
avfilter/af_afade: add 4 more curves
Diffstat (limited to 'libavfilter/af_afade.c')
| -rw-r--r-- | libavfilter/af_afade.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/libavfilter/af_afade.c b/libavfilter/af_afade.c index 226b63c275..3de673f73f 100644 --- a/libavfilter/af_afade.c +++ b/libavfilter/af_afade.c @@ -58,7 +58,7 @@ typedef struct AudioFadeContext { int curve0, int curve1); } AudioFadeContext; -enum CurveType { NONE = -1, TRI, QSIN, ESIN, HSIN, LOG, IPAR, QUA, CUB, SQU, CBR, PAR, EXP, IQSIN, IHSIN, DESE, DESI, LOSI, SINC, ISINC, NB_CURVES }; +enum CurveType { NONE = -1, TRI, QSIN, ESIN, HSIN, LOG, IPAR, QUA, CUB, SQU, CBR, PAR, EXP, IQSIN, IHSIN, DESE, DESI, LOSI, SINC, ISINC, QUAT, QUATR, QSIN2, HSIN2, NB_CURVES }; #define OFFSET(x) offsetof(AudioFadeContext, x) #define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM @@ -142,6 +142,18 @@ static double fade_gain(int curve, int64_t index, int64_t range, double silence, case ISINC: gain = gain <= 0.0 ? 0.0 : 1.0 - sin(M_PI * gain) / (M_PI * gain); break; + case QUAT: + gain = gain * gain * gain * gain; + break; + case QUATR: + gain = pow(gain, 0.25); + break; + case QSIN2: + gain = sin(gain * M_PI / 2.0) * sin(gain * M_PI / 2.0); + break; + case HSIN2: + gain = pow((1.0 - cos(gain * M_PI)) / 2.0, 2.0); + break; case NONE: gain = 1.0; break; @@ -316,6 +328,10 @@ static const AVOption afade_options[] = { { "losi", "logistic sigmoid", 0, AV_OPT_TYPE_CONST, {.i64 = LOSI }, 0, 0, TFLAGS, "curve" }, { "sinc", "sine cardinal function", 0, AV_OPT_TYPE_CONST, {.i64 = SINC }, 0, 0, TFLAGS, "curve" }, { "isinc", "inverted sine cardinal function", 0, AV_OPT_TYPE_CONST, {.i64 = ISINC}, 0, 0, TFLAGS, "curve" }, + { "quat", "quartic", 0, AV_OPT_TYPE_CONST, {.i64 = QUAT }, 0, 0, TFLAGS, "curve" }, + { "quatr", "quartic root", 0, AV_OPT_TYPE_CONST, {.i64 = QUATR}, 0, 0, TFLAGS, "curve" }, + { "qsin2", "squared quarter of sine wave", 0, AV_OPT_TYPE_CONST, {.i64 = QSIN2}, 0, 0, TFLAGS, "curve" }, + { "hsin2", "squared half of sine wave", 0, AV_OPT_TYPE_CONST, {.i64 = HSIN2}, 0, 0, TFLAGS, "curve" }, { "silence", "set the silence gain", OFFSET(silence), AV_OPT_TYPE_DOUBLE, {.dbl = 0 }, 0, 1, TFLAGS }, { "unity", "set the unity gain", OFFSET(unity), AV_OPT_TYPE_DOUBLE, {.dbl = 1 }, 0, 1, TFLAGS }, { NULL } @@ -464,6 +480,10 @@ static const AVOption acrossfade_options[] = { { "losi", "logistic sigmoid", 0, AV_OPT_TYPE_CONST, {.i64 = LOSI }, 0, 0, FLAGS, "curve" }, { "sinc", "sine cardinal function", 0, AV_OPT_TYPE_CONST, {.i64 = SINC }, 0, 0, FLAGS, "curve" }, { "isinc", "inverted sine cardinal function", 0, AV_OPT_TYPE_CONST, {.i64 = ISINC}, 0, 0, FLAGS, "curve" }, + { "quat", "quartic", 0, AV_OPT_TYPE_CONST, {.i64 = QUAT }, 0, 0, FLAGS, "curve" }, + { "quatr", "quartic root", 0, AV_OPT_TYPE_CONST, {.i64 = QUATR}, 0, 0, FLAGS, "curve" }, + { "qsin2", "squared quarter of sine wave", 0, AV_OPT_TYPE_CONST, {.i64 = QSIN2}, 0, 0, FLAGS, "curve" }, + { "hsin2", "squared half of sine wave", 0, AV_OPT_TYPE_CONST, {.i64 = HSIN2}, 0, 0, FLAGS, "curve" }, { "curve2", "set fade curve type for 2nd stream", OFFSET(curve2), AV_OPT_TYPE_INT, {.i64 = TRI }, NONE, NB_CURVES - 1, FLAGS, "curve" }, { "c2", "set fade curve type for 2nd stream", OFFSET(curve2), AV_OPT_TYPE_INT, {.i64 = TRI }, NONE, NB_CURVES - 1, FLAGS, "curve" }, { NULL } |