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| author | Stefan Kost <ensonic@users.sf.net> | 2011-06-04 20:41:49 +0300 |
|---|---|---|
| committer | Stefan Kost <ensonic@users.sf.net> | 2011-06-06 15:25:14 +0300 |
| commit | 594134d1398a02029584524412fb58e04f26bbe1 (patch) | |
| tree | 631e8ef13b3874796f8b13e1239076438a43b270 /gst/audiovisualizers/README | |
| parent | 30e2575e43c2127c714d802faf963aecb49c17f6 (diff) | |
| download | gstreamer-plugins-bad-594134d1398a02029584524412fb58e04f26bbe1.tar.gz | |
audiovisualizers: add a README with comments and plans
Diffstat (limited to 'gst/audiovisualizers/README')
| -rw-r--r-- | gst/audiovisualizers/README | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gst/audiovisualizers/README b/gst/audiovisualizers/README new file mode 100644 index 000000000..0d0f08a24 --- /dev/null +++ b/gst/audiovisualizers/README @@ -0,0 +1,51 @@ +A basclass for audiovisualizers. Takes care of re-fitting the audio-rate to +video-rate. It receives audio-data at the sampling-rate. It needs to render +video-frames at frame-rate. The rendering needs n audio samples (depends on +subclass). The baseclass takes care of that. + += Feedback = +* put 'Audio' to klass as well ? + += API = + +* should we add some basic drawing helpers to the baseclass + draw_point (x,y,color); + draw_hline (x1,x2,y,color); + draw_vline (x,y1,y2,color); + draw_rect (x1,x2,y1,y2,color); + draw_box (x1,x2,y1,y2,color); // filled + - would be nice if we could use cairo +* shading effects + - would be nice to use a generic 3x3 matrix operation, we don't run inplace + anyway + - this way we could also blur the background + += Elements to port = +gst-plugin-ugly/gst/synaestesia -> synaescope +gst-plugin-good/gst/monoscope -> blend into what we have in wavescope + += Elements to add = +spectrascope - done +spacescope - stereo wavescope +- left->x, right->y - done +- polar mapping + += TODO = +- element maker template +- test for baseclass + += Test it = + +GST_DEBUG="*:2,*scope*:4" + +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-inspect scopes + +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch audiotestsrc ! audioconvert ! wavescope ! colorspace ! ximagesink +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/xotox-hypnocat.mp3 ! decodebin2 ! audioconvert ! wavescope ! colorspace ! ximagesink +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/xotox-hypnocat.mp3 ! decodebin2 ! audioconvert ! spectrascope ! colorspace ! ximagesink + +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/Gridlock/Trace/04\ Uh4.17.mp3 ! decodebin2 ! audioconvert ! spectrascope ! colorspace ! ximagesink +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/Gridlock/Trace/04\ Uh4.17.mp3 ! decodebin2 ! audioconvert ! spectrascope shader=fade-and-move-up shade-amount=0x00040302 ! colorspace ! ximagesink + +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/Gridlock/Trace/04\ Uh4.17.mp3 ! decodebin2 ! tee name=t ! queue ! audioconvert ! synaesthesia ! ximagesink t. ! queue ! synaescope shade-amount=0x00040404 ! colorspace ! ximagesink + |