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avfilter/vf_blend: add extremity blend mode

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2017-06-25 16:39:10 +02:00
parent 8a14374ab3
commit 22a03c2900
3 changed files with 6 additions and 0 deletions
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1
doc/filters.texi
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@ -4859,6 +4859,7 @@ Available values for component modes are:
@item dodge
@item freeze
@item exclusion
@item extremity
@item glow
@item hardlight
@item hardmix

1
libavfilter/blend.h
View File

@ -58,6 +58,7 @@ enum BlendMode {
BLEND_MULTIPLY128,
BLEND_HEAT,
BLEND_FREEZE,
BLEND_EXTREMITY,
BLEND_NB
};

4
libavfilter/vf_blend.c
View File

@ -76,6 +76,7 @@ typedef struct ThreadData {
{ "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
{ "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
{ "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
{ "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },\
{ "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },\
{ "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
{ "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
@ -241,6 +242,7 @@ DEFINE_BLEND8(subtract, FFMAX(0, A - B))
DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
DEFINE_BLEND8(extremity, FFABS(255 - A - B))
DEFINE_BLEND8(difference, FFABS(A - B))
DEFINE_BLEND8(difference128, av_clip_uint8(128 + A - B))
DEFINE_BLEND8(screen, SCREEN(1, A, B))
@ -283,6 +285,7 @@ DEFINE_BLEND16(subtract, FFMAX(0, A - B))
DEFINE_BLEND16(multiply, MULTIPLY(1, A, B))
DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768))
DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B))
DEFINE_BLEND16(extremity, FFABS(65535 - A - B))
DEFINE_BLEND16(difference, FFABS(A - B))
DEFINE_BLEND16(difference128, av_clip_uint16(32768 + A - B))
DEFINE_BLEND16(screen, SCREEN(1, A, B))
@ -457,6 +460,7 @@ void ff_blend_init(FilterParams *param, int is_16bit)
case BLEND_DIVIDE: param->blend = is_16bit ? blend_divide_16bit : blend_divide_8bit; break;
case BLEND_DODGE: param->blend = is_16bit ? blend_dodge_16bit : blend_dodge_8bit; break;
case BLEND_EXCLUSION: param->blend = is_16bit ? blend_exclusion_16bit : blend_exclusion_8bit; break;
case BLEND_EXTREMITY: param->blend = is_16bit ? blend_extremity_16bit : blend_extremity_8bit; break;
case BLEND_FREEZE: param->blend = is_16bit ? blend_freeze_16bit : blend_freeze_8bit; break;
case BLEND_GLOW: param->blend = is_16bit ? blend_glow_16bit : blend_glow_8bit; break;
case BLEND_HARDLIGHT: param->blend = is_16bit ? blend_hardlight_16bit : blend_hardlight_8bit; break;