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-rw-r--r--src/modules/mixer/mixer.c137
1 files changed, 135 insertions, 2 deletions
diff --git a/src/modules/mixer/mixer.c b/src/modules/mixer/mixer.c
index c2181dd..7584a34 100644
--- a/src/modules/mixer/mixer.c
+++ b/src/modules/mixer/mixer.c
@@ -25,8 +25,14 @@ typedef enum mixer_style_t {
MIXER_STYLE_BLEND,
MIXER_STYLE_FLICKER,
MIXER_STYLE_INTERLACE,
+ MIXER_STYLE_PAINTROLLER,
} mixer_style_t;
+typedef enum mixer_orientation_t {
+ MIXER_ORIENTATION_HORIZONTAL,
+ MIXER_ORIENTATION_VERTICAL,
+} mixer_orientation_t;
+
typedef struct mixer_input_t {
til_module_context_t *module_ctxt;
/* XXX: it's expected that inputs will get more settable attributes to stick in here */
@@ -64,9 +70,13 @@ typedef struct mixer_setup_t {
mixer_style_t style;
mixer_setup_input_t inputs[2];
+ mixer_orientation_t orientation;
+ unsigned n_passes;
} mixer_setup_t;
-#define MIXER_DEFAULT_STYLE MIXER_STYLE_BLEND
+#define MIXER_DEFAULT_STYLE MIXER_STYLE_BLEND
+#define MIXER_DEFAULT_PASSES 8
+#define MIXER_DEFAULT_ORIENTATION MIXER_ORIENTATION_VERTICAL
static void mixer_update_taps(mixer_context_t *ctxt, til_stream_t *stream, unsigned ticks)
@@ -147,7 +157,7 @@ static void mixer_prepare_frame(til_module_context_t *context, til_stream_t *str
for (int i = 0; i < context->n_cpus; i++)
ctxt->seeds[i].state = rand_r(&context->seed);
/* fallthrough */
- {
+ case MIXER_STYLE_PAINTROLLER: {
float T = ctxt->vars.T;
/* INTERLACE and PAINTROLLER progressively overlay b_module output atop a_module,
* so we can render b_module into the fragment first. Only when (T < 1) do we
@@ -325,6 +335,68 @@ static void mixer_render_fragment(til_module_context_t *context, til_stream_t *s
break;
}
+ case MIXER_STYLE_PAINTROLLER: {
+ mixer_orientation_t orientation = ((mixer_setup_t *)context->setup)->orientation;
+ unsigned n_passes = ((mixer_setup_t *)context->setup)->n_passes;
+
+ til_fb_fragment_t *snapshot_b;
+ float T = ctxt->vars.T;
+ float div = 1.f / (float)n_passes;
+ unsigned iwhole = T * n_passes;
+ float frac = T * n_passes - iwhole;
+
+
+ if (T <= 0.001f || T >= .999f)
+ break;
+
+ assert(ctxt->snapshots[1]);
+
+ snapshot_b = ctxt->snapshots[1];
+
+ /* There are two rects to compute:
+ * 1. the whole "rolled" area already transitioned
+ * 2. the in-progress fractional area being rolled
+ *
+ * The simple thing to do is just compute those two in two steps,
+ * and clip their rects to the fragment rect and copy b->fragment
+ * clipped by the result, for each step. til_fb_fragment_copy()
+ * should clip to the dest fragment for us, so this is rather
+ * trivial.
+ */
+
+ switch (orientation) {
+ case MIXER_ORIENTATION_HORIZONTAL: {
+ float row_h = ((float)fragment->frame_height * div);
+ unsigned whole_w = fragment->frame_width;
+ unsigned whole_h = ceilf(row_h * (float)iwhole);
+ unsigned frac_w = ((float)fragment->frame_width * frac);
+ unsigned frac_h = row_h;
+
+ til_fb_fragment_copy(fragment, 0, 0, 0, whole_w, whole_h, snapshot_b);
+ til_fb_fragment_copy(fragment, 0, 0, whole_h, frac_w, frac_h, snapshot_b);
+ break;
+ }
+
+ case MIXER_ORIENTATION_VERTICAL: {
+ float col_w = ((float)fragment->frame_width * div);
+ unsigned whole_w = ceilf(col_w * (float)iwhole);
+ unsigned whole_h = fragment->frame_height;
+ unsigned frac_w = col_w;
+ unsigned frac_h = ((float)fragment->frame_height * frac);
+
+ til_fb_fragment_copy(fragment, 0, 0, 0, whole_w, whole_h, snapshot_b);
+ til_fb_fragment_copy(fragment, 0, whole_w, 0, frac_w, frac_h, snapshot_b);
+ break;
+ }
+
+ default:
+ assert(0);
+ }
+
+ /* progressively transition from a->b via incremental striping */
+ break;
+ }
+
default:
assert(0);
}
@@ -414,9 +486,29 @@ static int mixer_setup(const til_settings_t *settings, til_setting_t **res_setti
"blend",
"flicker",
"interlace",
+ "paintroller",
+ NULL
+ };
+ const char *passes_values[] = {
+ "2",
+ "4",
+ "6",
+ "8",
+ "10",
+ "12",
+ "16",
+ "18",
+ "20",
+ NULL
+ };
+ const char *orientation_values[] = {
+ "horizontal",
+ "vertical",
NULL
};
til_setting_t *style;
+ til_setting_t *passes;
+ til_setting_t *orientation;
const til_settings_t *inputs_settings[2];
til_setting_t *inputs[2];
int r;
@@ -435,6 +527,37 @@ static int mixer_setup(const til_settings_t *settings, til_setting_t **res_setti
if (r)
return r;
+ if (!strcasecmp(style->value, style_values[MIXER_STYLE_PAINTROLLER])) {
+
+ r = til_settings_get_and_describe_setting(settings,
+ &(til_setting_spec_t){
+ .name = "Mixer paint roller orientation",
+ .key = "orientation",
+ .values = orientation_values,
+ .preferred = orientation_values[MIXER_DEFAULT_ORIENTATION],
+ .annotations = NULL
+ },
+ &orientation,
+ res_setting,
+ res_desc);
+ if (r)
+ return r;
+
+ r = til_settings_get_and_describe_setting(settings,
+ &(til_setting_spec_t){
+ .name = "Mixer paint roller passes",
+ .key = "passes",
+ .values = passes_values,
+ .preferred = TIL_SETTINGS_STR(MIXER_DEFAULT_PASSES),
+ .annotations = NULL
+ },
+ &passes,
+ res_setting,
+ res_desc);
+ if (r)
+ return r;
+ }
+
for (int i = 0; i < 2; i++) {
r = til_settings_get_and_describe_setting(settings,
&(til_setting_spec_t){
@@ -477,6 +600,16 @@ static int mixer_setup(const til_settings_t *settings, til_setting_t **res_setti
if (r < 0)
return til_setup_free_with_failed_setting_ret_err(&setup->til_setup, style, res_setting, -EINVAL);
+ if (setup->style == MIXER_STYLE_PAINTROLLER) {
+
+ if (sscanf(passes->value, "%u", &setup->n_passes) != 1)
+ return til_setup_free_with_failed_setting_ret_err(&setup->til_setup, passes, res_setting, -EINVAL);
+
+ r = til_value_to_pos(orientation_values, orientation->value, (unsigned *)&setup->orientation);
+ if (r < 0)
+ return til_setup_free_with_failed_setting_ret_err(&setup->til_setup, orientation, res_setting, -EINVAL);
+ }
+
for (i = 0; i < 2; i++) {
r = til_module_setup_full(inputs_settings[i],
res_setting,
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