Расширить общие API графиков и GAS обмена

c/set-protocol/include/set_plot.h

@@ -17,10 +17,11 @@ enum set_plot_operation {
     SET_PLOT_DRAG = 4,      /* initial,deltaPixels,length,low,high,inverted -> clamped value */
     SET_PLOT_TICK_STEP = 5, /* range,lengthPixels -> nice step */
     SET_PLOT_DELTA = 6,     /* A,B,multiplier -> (B-A)*multiplier */
-    SET_PLOT_DB_DELTA = 7   /* A,B -> 20*log10(abs(B/A)); zero is invalid */
+    SET_PLOT_DB_DELTA = 7,  /* A,B -> 20*log10(abs(B/A)); zero is invalid */
+    SET_PLOT_LIMITS = 8     /* xMin,xMax,yMin,yMax -> validated unchanged limits */
 };
 
-/** Version of this plot ABI, independently of the transport ABI. */
+/** Version of this plot ABI, independently of the transport ABI (currently 2). */
 PCAN_ABI_API uint32_t set_plot_abi_version(void);
 /** Evaluates one operation. Returns output count, or 0 for invalid arguments.
  * TRANSFORM rejects malformed viewports; invalid gesture values return the

c/set-protocol/include/set_spectrum.h

@@ -28,6 +28,15 @@ PCAN_ABI_API int set_spectrum_analyze(const double *times, const double *values,
     size_t max_size, int window, int filter, double low_hz, double high_hz, int remove_mean,
     double *amplitudes, size_t capacity, double *meta);
 
+/** Find the strongest non-DC local maximum above both the absolute floor and
+ * relative_threshold * median(non-DC amplitudes). The caller supplies scratch
+ * storage of at least count-1 doubles. peak = {frequency_hz, amplitude}.
+ * Returns 1 when found, 0 when no narrow-band peak exists, -1 on invalid input.
+ */
+PCAN_ABI_API int set_spectrum_dominant_peak(const double *amplitudes, size_t count,
+    double bin_hz, double relative_threshold, double absolute_floor,
+    double *scratch, size_t scratch_capacity, double *peak, size_t peak_capacity);
+
 #ifdef __cplusplus
 }
 #endif

c/set-protocol/include/set_trends.h

@@ -48,6 +48,13 @@ PCAN_ABI_API int set_trend_watch_ack(
 PCAN_ABI_API int set_trend_watch_values(
     const uint8_t *payload, size_t size, uint16_t *words, size_t capacity);
 
+/** Decode the complete GAS_WATCH_DATA payload including its device timestamp.
+ * This is the preferred ABI for GUI ports; the older values-only symbol remains
+ * available for binary compatibility.
+ */
+PCAN_ABI_API int set_trend_watch_decode(const uint8_t *payload, size_t size,
+    uint32_t *timestamp_ms, uint16_t *words, size_t capacity);
+
 #ifdef __cplusplus
 }
 #endif