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avfilter/vf_scale: simplify color matrix parsing logic

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No need to write a custom string parser when we can just use an integer
option with preset values. The various bits of fallback logic are wholly
redundant with equivalent logic already inside sws_getCoefficients.

Note: I disallowed setting 'out_color_matrix=auto', because this does
not do anything meaningful in the current code (just hard-codes
AVCOL_SPC_BT470BG fallback).
This commit is contained in:
Niklas Haas 2023-10-31 12:54:19 +01:00
parent ea9557043e
commit 5d5bb77af1
1 changed files with 22 additions and 44 deletions
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66
libavfilter/vf_scale.c
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@ -139,8 +139,8 @@ typedef struct ScaleContext {
char *flags_str;
char *in_color_matrix;
char *out_color_matrix;
int in_color_matrix;
int out_color_matrix;
int in_range;
int in_frame_range;
@ -410,30 +410,6 @@ static int query_formats(AVFilterContext *ctx)
return 0;
}
static const int *parse_yuv_type(const char *s, enum AVColorSpace colorspace)
{
if (!s)
s = "bt601";
if (s && strstr(s, "bt709")) {
colorspace = AVCOL_SPC_BT709;
} else if (s && strstr(s, "fcc")) {
colorspace = AVCOL_SPC_FCC;
} else if (s && strstr(s, "smpte240m")) {
colorspace = AVCOL_SPC_SMPTE240M;
} else if (s && (strstr(s, "bt601") || strstr(s, "bt470") || strstr(s, "smpte170m"))) {
colorspace = AVCOL_SPC_BT470BG;
} else if (s && strstr(s, "bt2020")) {
colorspace = AVCOL_SPC_BT2020_NCL;
}
if (colorspace < 1 || colorspace > 10 || colorspace == 8) {
colorspace = AVCOL_SPC_BT470BG;
}
return sws_getCoefficients(colorspace);
}
static int scale_eval_dimensions(AVFilterContext *ctx)
{
ScaleContext *scale = ctx->priv;
@ -554,7 +530,7 @@ static int config_props(AVFilterLink *outlink)
scale->isws[0] = scale->isws[1] = scale->sws = NULL;
if (inlink0->w == outlink->w &&
inlink0->h == outlink->h &&
!scale->out_color_matrix &&
scale->out_color_matrix == AVCOL_SPC_UNSPECIFIED &&
scale->in_range == scale->out_range &&
inlink0->format == outlink->format)
;
@ -840,8 +816,8 @@ scale:
in_range = in->color_range;
if ( scale->in_color_matrix
|| scale->out_color_matrix
if ( scale->in_color_matrix != AVCOL_SPC_UNSPECIFIED
|| scale->out_color_matrix != AVCOL_SPC_UNSPECIFIED
|| scale-> in_range != AVCOL_RANGE_UNSPECIFIED
|| in_range != AVCOL_RANGE_UNSPECIFIED
|| scale->out_range != AVCOL_RANGE_UNSPECIFIED) {
@ -852,11 +828,13 @@ scale:
(int **)&table, &out_full,
&brightness, &contrast, &saturation);
if (scale->in_color_matrix)
inv_table = parse_yuv_type(scale->in_color_matrix, in->colorspace);
if (scale->out_color_matrix)
table = parse_yuv_type(scale->out_color_matrix, AVCOL_SPC_UNSPECIFIED);
else if (scale->in_color_matrix)
if (scale->in_color_matrix == -1 /* auto */)
inv_table = sws_getCoefficients(in->colorspace);
else if (scale->in_color_matrix != AVCOL_SPC_UNSPECIFIED)
inv_table = sws_getCoefficients(scale->in_color_matrix);
if (scale->out_color_matrix != AVCOL_SPC_UNSPECIFIED)
table = sws_getCoefficients(scale->out_color_matrix);
else if (scale->in_color_matrix != AVCOL_SPC_UNSPECIFIED)
table = inv_table;
if (scale-> in_range != AVCOL_RANGE_UNSPECIFIED)
@ -1003,16 +981,16 @@ static const AVOption scale_options[] = {
{ "interl", "set interlacing", OFFSET(interlaced), AV_OPT_TYPE_BOOL, {.i64 = 0 }, -1, 1, FLAGS },
{ "size", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, FLAGS },
{ "s", "set video size", OFFSET(size_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, FLAGS },
{ "in_color_matrix", "set input YCbCr type", OFFSET(in_color_matrix), AV_OPT_TYPE_STRING, { .str = "auto" }, .flags = FLAGS, "color" },
{ "out_color_matrix", "set output YCbCr type", OFFSET(out_color_matrix), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS, "color"},
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .str = "auto" }, 0, 0, FLAGS, "color" },
{ "bt601", NULL, 0, AV_OPT_TYPE_CONST, { .str = "bt601" }, 0, 0, FLAGS, "color" },
{ "bt470", NULL, 0, AV_OPT_TYPE_CONST, { .str = "bt470" }, 0, 0, FLAGS, "color" },
{ "smpte170m", NULL, 0, AV_OPT_TYPE_CONST, { .str = "smpte170m" }, 0, 0, FLAGS, "color" },
{ "bt709", NULL, 0, AV_OPT_TYPE_CONST, { .str = "bt709" }, 0, 0, FLAGS, "color" },
{ "fcc", NULL, 0, AV_OPT_TYPE_CONST, { .str = "fcc" }, 0, 0, FLAGS, "color" },
{ "smpte240m", NULL, 0, AV_OPT_TYPE_CONST, { .str = "smpte240m" }, 0, 0, FLAGS, "color" },
{ "bt2020", NULL, 0, AV_OPT_TYPE_CONST, { .str = "bt2020" }, 0, 0, FLAGS, "color" },
{ "in_color_matrix", "set input YCbCr type", OFFSET(in_color_matrix), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, AVCOL_SPC_NB-1, .flags = FLAGS, "color" },
{ "out_color_matrix", "set output YCbCr type", OFFSET(out_color_matrix), AV_OPT_TYPE_INT, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, AVCOL_SPC_NB-1, .flags = FLAGS, "color"},
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, FLAGS, "color" },
{ "bt601", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, "color" },
{ "bt470", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, "color" },
{ "smpte170m", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, "color" },
{ "bt709", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT709 }, 0, 0, FLAGS, "color" },
{ "fcc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_FCC }, 0, 0, FLAGS, "color" },
{ "smpte240m", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE240M }, 0, 0, FLAGS, "color" },
{ "bt2020", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT2020_NCL }, 0, 0, FLAGS, "color" },
{ "in_range", "set input color range", OFFSET( in_range), AV_OPT_TYPE_INT, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, 2, FLAGS, "range" },
{ "out_range", "set output color range", OFFSET(out_range), AV_OPT_TYPE_INT, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, 2, FLAGS, "range" },
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVCOL_RANGE_UNSPECIFIED }, 0, 0, FLAGS, "range" },