{ "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
{ "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
{ "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
+ { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },\
{ "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
{ "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
{ "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
DEFINE_BLEND8(average, (A + B) / 2)
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(difference, FFABS(A - B))
DEFINE_BLEND8(difference128, av_clip_uint8(128 + A - B))
DEFINE_BLEND16(average, (A + B) / 2)
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(difference, FFABS(A - B))
DEFINE_BLEND16(difference128, av_clip_uint16(32768 + A - B))
case BLEND_LIGHTEN: param->blend = is_16bit ? blend_lighten_16bit : blend_lighten_8bit; break;
case BLEND_LINEARLIGHT:param->blend = is_16bit ? blend_linearlight_16bit: blend_linearlight_8bit;break;
case BLEND_MULTIPLY: param->blend = is_16bit ? blend_multiply_16bit : blend_multiply_8bit; break;
+ case BLEND_MULTIPLY128:param->blend = is_16bit ? blend_multiply128_16bit: blend_multiply128_8bit;break;
case BLEND_NEGATION: param->blend = is_16bit ? blend_negation_16bit : blend_negation_8bit; break;
case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_normal:
is_16bit ? blend_normal_16bit : blend_normal_8bit; break;