[FFmpeg-cvslog] avfilter/vf_lut3d: lut1d: add support for commands

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Sat Feb  6 12:45:39 2021 +0100| [d8181cbbc48d262ed820ff2c4265f846be7fe6d1] | committer: Paul B Mahol

avfilter/vf_lut3d: lut1d: add support for commands

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=d8181cbbc48d262ed820ff2c4265f846be7fe6d1
---

 doc/filters.texi       |  4 ++++
 libavfilter/vf_lut3d.c | 34 +++++++++++++++++++++++++++-------
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/doc/filters.texi b/doc/filters.texi
index c91db8c346..c150c29114 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -13914,6 +13914,10 @@ Interpolate values using the spline interpolation.
 @end table
 @end table
 
+ at subsection Commands
+
+This filter supports the all above options as @ref{commands}.
+
 @anchor{lut3d}
 @section lut3d
 
diff --git a/libavfilter/vf_lut3d.c b/libavfilter/vf_lut3d.c
index fb33c93c34..ad559dbf10 100644
--- a/libavfilter/vf_lut3d.c
+++ b/libavfilter/vf_lut3d.c
@@ -100,6 +100,7 @@ typedef struct ThreadData {
 
 #define OFFSET(x) offsetof(LUT3DContext, x)
 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+#define TFLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
 #define COMMON_OPTIONS \
     { "interp", "select interpolation mode", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERPOLATE_TETRAHEDRAL}, 0, NB_INTERP_MODE-1, FLAGS, "interp_mode" }, \
         { "nearest",     "use values from the nearest defined points",            0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_NEAREST},     INT_MIN, INT_MAX, FLAGS, "interp_mode" }, \
@@ -1798,13 +1799,13 @@ try_again:
 }
 
 static const AVOption lut1d_options[] = {
-    { "file", "set 1D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
-    { "interp", "select interpolation mode", OFFSET(interpolation),    AV_OPT_TYPE_INT, {.i64=INTERPOLATE_1D_LINEAR}, 0, NB_INTERP_1D_MODE-1, FLAGS, "interp_mode" },
-        { "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_NEAREST},   INT_MIN, INT_MAX, FLAGS, "interp_mode" },
-        { "linear",  "use values from the linear interpolation",   0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_LINEAR},    INT_MIN, INT_MAX, FLAGS, "interp_mode" },
-        { "cosine",  "use values from the cosine interpolation",   0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_COSINE},    INT_MIN, INT_MAX, FLAGS, "interp_mode" },
-        { "cubic",   "use values from the cubic interpolation",    0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_CUBIC},     INT_MIN, INT_MAX, FLAGS, "interp_mode" },
-        { "spline",  "use values from the spline interpolation",   0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_SPLINE},    INT_MIN, INT_MAX, FLAGS, "interp_mode" },
+    { "file", "set 1D LUT file name", OFFSET(file), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = TFLAGS },
+    { "interp", "select interpolation mode", OFFSET(interpolation),    AV_OPT_TYPE_INT, {.i64=INTERPOLATE_1D_LINEAR}, 0, NB_INTERP_1D_MODE-1, TFLAGS, "interp_mode" },
+        { "nearest", "use values from the nearest defined points", 0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_NEAREST},   0, 0, TFLAGS, "interp_mode" },
+        { "linear",  "use values from the linear interpolation",   0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_LINEAR},    0, 0, TFLAGS, "interp_mode" },
+        { "cosine",  "use values from the cosine interpolation",   0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_COSINE},    0, 0, TFLAGS, "interp_mode" },
+        { "cubic",   "use values from the cubic interpolation",    0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_CUBIC},     0, 0, TFLAGS, "interp_mode" },
+        { "spline",  "use values from the spline interpolation",   0, AV_OPT_TYPE_CONST, {.i64=INTERPOLATE_1D_SPLINE},    0, 0, TFLAGS, "interp_mode" },
     { NULL }
 };
 
@@ -2234,6 +2235,24 @@ static int filter_frame_1d(AVFilterLink *inlink, AVFrame *in)
     return ff_filter_frame(outlink, out);
 }
 
+static int lut1d_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
+                           char *res, int res_len, int flags)
+{
+    LUT1DContext *lut1d = ctx->priv;
+    int ret;
+
+    ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
+    if (ret < 0)
+        return ret;
+
+    ret = lut1d_init(ctx);
+    if (ret < 0) {
+        set_identity_matrix_1d(lut1d, 32);
+        return ret;
+    }
+    return config_input_1d(ctx->inputs[0]);
+}
+
 static const AVFilterPad lut1d_inputs[] = {
     {
         .name         = "default",
@@ -2262,5 +2281,6 @@ AVFilter ff_vf_lut1d = {
     .outputs       = lut1d_outputs,
     .priv_class    = &lut1d_class,
     .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
+    .process_command = lut1d_process_command,
 };
 #endif