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swscale/options: cosmetic changes
Reorganize the list, fix whitespace, make indentation consistent, and rename some descriptions for clarity, consistency or informativeness. Sponsored-by: Sovereign Tech Fund Signed-off-by: Niklas Haas <[email protected]>
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‎libswscale/options.c

Lines changed: 44 additions & 42 deletions
Original file line numberDiff line numberDiff line change
@@ -32,55 +32,57 @@ static const char *sws_context_to_name(void *ptr)
3232
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
3333

3434
static const AVOption swscale_options[] = {
35-
{ "sws_flags", "scaler flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = SWS_BICUBIC }, 0, UINT_MAX, VE, .unit = "sws_flags" },
36-
{ "fast_bilinear", "fast bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FAST_BILINEAR }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
37-
{ "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BILINEAR }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
38-
{ "bicubic", "bicubic", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBIC }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
39-
{ "experimental", "experimental", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_X }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
40-
{ "neighbor", "nearest neighbor", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_POINT }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
41-
{ "area", "averaging area", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_AREA }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
42-
{ "bicublin", "luma bicubic, chroma bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBLIN }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
43-
{ "gauss", "Gaussian", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_GAUSS }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
44-
{ "sinc", "sinc", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SINC }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
45-
{ "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_LANCZOS }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
46-
{ "spline", "natural bicubic spline", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SPLINE }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
47-
{ "print_info", "print info", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_PRINT_INFO }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
48-
{ "accurate_rnd", "accurate rounding", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ACCURATE_RND }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
49-
{ "full_chroma_int", "full chroma interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INT }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
50-
{ "full_chroma_inp", "full chroma input", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INP }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
51-
{ "bitexact", "", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BITEXACT }, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
52-
{ "error_diffusion", "error diffusion dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ERROR_DIFFUSION}, INT_MIN, INT_MAX, VE, .unit = "sws_flags" },
35+
{ "sws_flags", "swscale flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = SWS_BICUBIC }, .flags = VE, .unit = "sws_flags", .max = UINT_MAX },
36+
{ "fast_bilinear", "fast bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FAST_BILINEAR }, .flags = VE, .unit = "sws_flags" },
37+
{ "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BILINEAR }, .flags = VE, .unit = "sws_flags" },
38+
{ "bicubic", "bicubic", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBIC }, .flags = VE, .unit = "sws_flags" },
39+
{ "experimental", "experimental", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_X }, .flags = VE, .unit = "sws_flags" },
40+
{ "neighbor", "nearest neighbor", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_POINT }, .flags = VE, .unit = "sws_flags" },
41+
{ "area", "averaging area", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_AREA }, .flags = VE, .unit = "sws_flags" },
42+
{ "bicublin", "luma bicubic, chroma bilinear", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BICUBLIN }, .flags = VE, .unit = "sws_flags" },
43+
{ "gauss", "gaussian approximation", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_GAUSS }, .flags = VE, .unit = "sws_flags" },
44+
{ "sinc", "sinc", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SINC }, .flags = VE, .unit = "sws_flags" },
45+
{ "lanczos", "lanczos (sinc/sinc)", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_LANCZOS }, .flags = VE, .unit = "sws_flags" },
46+
{ "spline", "natural bicubic spline", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_SPLINE }, .flags = VE, .unit = "sws_flags" },
47+
{ "print_info", "print info", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_PRINT_INFO }, .flags = VE, .unit = "sws_flags" },
48+
{ "accurate_rnd", "accurate rounding", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ACCURATE_RND }, .flags = VE, .unit = "sws_flags" },
49+
{ "full_chroma_int", "full chroma interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INT }, .flags = VE, .unit = "sws_flags" },
50+
{ "full_chroma_inp", "full chroma input", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_FULL_CHR_H_INP }, .flags = VE, .unit = "sws_flags" },
51+
{ "bitexact", "bit-exact mode", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_BITEXACT }, .flags = VE, .unit = "sws_flags" },
52+
{ "error_diffusion", "error diffusion dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ERROR_DIFFUSION}, .flags = VE, .unit = "sws_flags" },
5353

54-
{ "srcw", "source width", OFFSET(srcW), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
55-
{ "srch", "source height", OFFSET(srcH), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
56-
{ "dstw", "destination width", OFFSET(dstW), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
57-
{ "dsth", "destination height", OFFSET(dstH), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
54+
{ "param0", "scaler param 0", OFFSET(param[0]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE },
55+
{ "param1", "scaler param 1", OFFSET(param[1]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE },
56+
57+
{ "srcw", "source width", OFFSET(srcW), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
58+
{ "srch", "source height", OFFSET(srcH), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
59+
{ "dstw", "destination width", OFFSET(dstW), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
60+
{ "dsth", "destination height", OFFSET(dstH), AV_OPT_TYPE_INT, { .i64 = 16 }, 1, INT_MAX, VE },
5861
{ "src_format", "source format", OFFSET(srcFormat), AV_OPT_TYPE_PIXEL_FMT,{ .i64 = DEFAULT }, 0, INT_MAX, VE },
5962
{ "dst_format", "destination format", OFFSET(dstFormat), AV_OPT_TYPE_PIXEL_FMT,{ .i64 = DEFAULT }, 0, INT_MAX, VE },
60-
{ "src_range", "source is full range", OFFSET(srcRange), AV_OPT_TYPE_BOOL, { .i64 = DEFAULT }, 0, 1, VE },
61-
{ "dst_range", "destination is full range", OFFSET(dstRange), AV_OPT_TYPE_BOOL, { .i64 = DEFAULT }, 0, 1, VE },
62-
{ "param0", "scaler param 0", OFFSET(param[0]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE },
63-
{ "param1", "scaler param 1", OFFSET(param[1]), AV_OPT_TYPE_DOUBLE, { .dbl = SWS_PARAM_DEFAULT }, INT_MIN, INT_MAX, VE },
63+
{ "src_range", "source is full range", OFFSET(srcRange), AV_OPT_TYPE_BOOL, { .i64 = DEFAULT }, 0, 1, VE },
64+
{ "dst_range", "destination is full range", OFFSET(dstRange), AV_OPT_TYPE_BOOL, { .i64 = DEFAULT }, 0, 1, VE },
65+
{ "gamma", "gamma correct scaling", OFFSET(gamma_flag),AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
66+
67+
{ "src_v_chr_pos", "source vertical chroma position in luma grid/256" , OFFSET(src_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
68+
{ "src_h_chr_pos", "source horizontal chroma position in luma grid/256", OFFSET(src_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
69+
{ "dst_v_chr_pos", "destination vertical chroma position in luma grid/256" , OFFSET(dst_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
70+
{ "dst_h_chr_pos", "destination horizontal chroma position in luma grid/256", OFFSET(dst_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
6471

65-
{ "src_v_chr_pos", "source vertical chroma position in luma grid/256" , OFFSET(src_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
66-
{ "src_h_chr_pos", "source horizontal chroma position in luma grid/256", OFFSET(src_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
67-
{ "dst_v_chr_pos", "destination vertical chroma position in luma grid/256" , OFFSET(dst_v_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
68-
{ "dst_h_chr_pos", "destination horizontal chroma position in luma grid/256", OFFSET(dst_h_chr_pos), AV_OPT_TYPE_INT, { .i64 = -513 }, -513, 1024, VE },
72+
{ "sws_dither", "set dithering algorithm", OFFSET(dither), AV_OPT_TYPE_INT, { .i64 = SWS_DITHER_AUTO }, .flags = VE, .unit = "sws_dither", .max = SWS_DITHER_NB - 1 },
73+
{ "auto", "automatic selection", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_AUTO }, .flags = VE, .unit = "sws_dither" },
74+
{ "bayer", "ordered matrix dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_BAYER }, .flags = VE, .unit = "sws_dither" },
75+
{ "ed", "full error diffusion", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_ED }, .flags = VE, .unit = "sws_dither" },
76+
{ "a_dither", "arithmetic addition dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_A_DITHER }, .flags = VE, .unit = "sws_dither" },
77+
{ "x_dither", "arithmetic xor dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_X_DITHER }, .flags = VE, .unit = "sws_dither" },
6978

70-
{ "sws_dither", "set dithering algorithm", OFFSET(dither), AV_OPT_TYPE_INT, { .i64 = SWS_DITHER_AUTO }, 0, SWS_DITHER_NB, VE, .unit = "sws_dither" },
71-
{ "auto", "leave choice to sws", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_AUTO }, INT_MIN, INT_MAX, VE, .unit = "sws_dither" },
72-
{ "bayer", "bayer dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_BAYER }, INT_MIN, INT_MAX, VE, .unit = "sws_dither" },
73-
{ "ed", "error diffusion", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_ED }, INT_MIN, INT_MAX, VE, .unit = "sws_dither" },
74-
{ "a_dither", "arithmetic addition dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_A_DITHER}, INT_MIN, INT_MAX, VE, .unit = "sws_dither" },
75-
{ "x_dither", "arithmetic xor dither", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_DITHER_X_DITHER}, INT_MIN, INT_MAX, VE, .unit = "sws_dither" },
76-
{ "gamma", "gamma correct scaling", OFFSET(gamma_flag),AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
77-
{ "alphablend", "mode for alpha -> non alpha", OFFSET(alphablend),AV_OPT_TYPE_INT, { .i64 = SWS_ALPHA_BLEND_NONE}, 0, SWS_ALPHA_BLEND_NB-1, VE, .unit = "alphablend" },
78-
{ "none", "ignore alpha", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_NONE}, INT_MIN, INT_MAX, VE, .unit = "alphablend" },
79-
{ "uniform_color", "blend onto a uniform color", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_UNIFORM},INT_MIN, INT_MAX, VE, .unit = "alphablend" },
80-
{ "checkerboard", "blend onto a checkerboard", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_CHECKERBOARD},INT_MIN, INT_MAX, VE, .unit = "alphablend" },
79+
{ "alphablend", "mode for alpha -> non alpha", OFFSET(alphablend), AV_OPT_TYPE_INT, { .i64 = SWS_ALPHA_BLEND_NONE}, .flags = VE, .unit = "alphablend", .max = SWS_ALPHA_BLEND_NB - 1 },
80+
{ "none", "ignore alpha", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_NONE}, .flags = VE, .unit = "alphablend" },
81+
{ "uniform_color", "blend onto a uniform color", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_UNIFORM}, .flags = VE, .unit = "alphablend" },
82+
{ "checkerboard", "blend onto a checkerboard", 0, AV_OPT_TYPE_CONST, { .i64 = SWS_ALPHA_BLEND_CHECKERBOARD}, .flags = VE, .unit = "alphablend" },
8183

8284
{ "threads", "number of threads", OFFSET(nb_threads), AV_OPT_TYPE_INT, {.i64 = 1 }, 0, INT_MAX, VE, .unit = "threads" },
83-
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, .flags = VE, .unit = "threads" },
85+
{ "auto", "automatic selection", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, .flags = VE, .unit = "threads" },
8486

8587
{ NULL }
8688
};

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