Add a function to fill a MSEqualizerGain by parsing a string

include/mediastreamer2/msequalizer.h

@@ -28,6 +28,8 @@ typedef struct _MSEqualizerGain{
 	float width; ///< frequency band width around mid frequency for which the gain is applied, in Hz. Use 0 for the lowest frequency resolution.
 }MSEqualizerGain;
 
+MS2_PUBLIC MSList *ms_parse_equalizer_string(const char *str);
+
 #define MS_EQUALIZER_SET_GAIN		MS_FILTER_METHOD(MS_EQUALIZER_ID,0,MSEqualizerGain)
 #define MS_EQUALIZER_GET_GAIN		MS_FILTER_METHOD(MS_EQUALIZER_ID,1,MSEqualizerGain)
 #define MS_EQUALIZER_SET_ACTIVE		MS_FILTER_METHOD(MS_EQUALIZER_ID,2,int)

src/audiofilters/equalizer.c

@@ -382,4 +382,19 @@ MSFilterDesc ms_equalizer_desc={
 
 #endif
 
+MSList *ms_parse_equalizer_string(const char *str) {
+    MSList *eq_list = NULL;
+	do {
+		int bytes;
+		MSEqualizerGain g;
+		if (sscanf(str, "%f:%f:%f %n", &g.frequency, &g.gain, &g.width, &bytes) == 3) {
+			MSEqualizerGain *gain = ms_new(MSEqualizerGain, 1);
+			*gain = g;
+			eq_list = ms_list_append(eq_list, gain);
+			str += bytes;
+		} else break;
+	} while (1);
+	return eq_list;
+}
+
 MS_FILTER_DESC_EXPORT(ms_equalizer_desc)

src/voip/audiostream.c

@@ -1043,17 +1043,19 @@ int audio_stream_start_from_io(AudioStream *stream, RtpProfile *profile, const c
 		if (device && device->hacks) {
 			const char *gains = device->hacks->equalizer;
 			if (gains) {
+				MSList *gains_list;
 				stream->eq_loc = MSEqualizerMic;
 				ms_message("Found equalizer configuration in the devices table");
-				do {
-					int bytes;
-					MSEqualizerGain g;
-					if (sscanf(gains, "%f:%f:%f %n", &g.frequency, &g.gain, &g.width, &bytes) == 3) {
-						ms_message("Read equalizer gains: %f(~%f) --> %f", g.frequency, g.width, g.gain);
-						ms_filter_call_method(stream->equalizer, MS_EQUALIZER_SET_GAIN, &g);
-						gains += bytes;
-					} else break;
-				} while(1);
+				gains_list = ms_parse_equalizer_string(gains);
+				if (gains_list) {
+					MSList *it;
+					for (it=gains_list; it; it++) {
+						MSEqualizerGain *g = (MSEqualizerGain *)it->data;
+						ms_message("Read equalizer gains: %f(~%f) --> %f", g->frequency, g->width, g->gain);
+						ms_filter_call_method(stream->equalizer, MS_EQUALIZER_SET_GAIN, g);
+					}
+					ms_list_free_with_data(gains_list, ms_free);
+				}
 			}
 		}
 	}