Support all sample rate available on GUI.

Before we could only use `44100`. Now we can use all available on GUI
for the supported codecs.

src/common/ffmpeg.cpp

@@ -106,15 +106,21 @@ recording::MediaRet recording::MediaRecorder::setup_audio_stream()
     aenc->sample_fmt = acodec->sample_fmts ? acodec->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
     aenc->bit_rate = 128000; // mp3
     aenc->sample_rate = sampleRate;
+    // this might be useful to check if the codec suports the
+    // sample rate, but it is not strictly needed for now
+    bool isSupported = false;
     if (acodec->supported_samplerates)
     {
-        aenc->sample_rate = acodec->supported_samplerates[0];
         for (int i = 0; acodec->supported_samplerates[i]; ++i)
         {
-            if (acodec->supported_samplerates[i] == 44100)
-                aenc->sample_rate = 44100;
+            if (acodec->supported_samplerates[i] == sampleRate)
+            {
+                isSupported = true;
+                break;
+            }
         }
     }
+    if (!isSupported) return MRET_ERR_NOCODEC;
     aenc->channels = av_get_channel_layout_nb_channels(aenc->channel_layout);
     aenc->channel_layout = AV_CH_LAYOUT_STEREO;
     if (acodec->channel_layouts)

src/wx/panel.cpp

@@ -2340,6 +2340,7 @@ void GameArea::StartVidRecording(const wxString& fname)
 {
     recording::MediaRet ret;
 
+    vid_rec.SetSampleRate(soundGetSampleRate());
     if ((ret = vid_rec.Record(fname.mb_str(), basic_width, basic_height,
              systemColorDepth))
         != recording::MRET_OK)
@@ -2370,6 +2371,7 @@ void GameArea::StartSoundRecording(const wxString& fname)
 {
     recording::MediaRet ret;
 
+    snd_rec.SetSampleRate(soundGetSampleRate());
     if ((ret = snd_rec.Record(fname.mb_str())) != recording::MRET_OK)
         wxLogError(_("Unable to begin recording to %s (%s)"), fname.mb_str(),
             media_err(ret));