mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-22 08:17:01 +00:00
52 lines
2.2 KiB
Text
52 lines
2.2 KiB
Text
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A basclass for audiovisualizers. Takes care of re-fitting the audio-rate to
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video-rate. It receives audio-data at the sampling-rate. It needs to render
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video-frames at frame-rate. The rendering needs n audio samples (depends on
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subclass). The baseclass takes care of that.
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= Feedback =
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* put 'Audio' to klass as well ?
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= API =
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* should we add some basic drawing helpers to the baseclass
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draw_point (x,y,color);
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draw_hline (x1,x2,y,color);
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draw_vline (x,y1,y2,color);
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draw_rect (x1,x2,y1,y2,color);
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draw_box (x1,x2,y1,y2,color); // filled
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- would be nice if we could use cairo
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* shading effects
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- would be nice to use a generic 3x3 matrix operation, we don't run inplace
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anyway
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- this way we could also blur the background
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= Elements to port =
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gst-plugin-ugly/gst/synaestesia -> synaescope
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gst-plugin-good/gst/monoscope -> blend into what we have in wavescope
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= Elements to add =
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spectrascope - done
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spacescope - stereo wavescope
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- left->x, right->y - done
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- polar mapping
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= TODO =
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- element maker template
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- test for baseclass
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= Test it =
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GST_DEBUG="*:2,*scope*:4"
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GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-inspect scopes
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GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch audiotestsrc ! audioconvert ! wavescope ! colorspace ! ximagesink
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GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/xotox-hypnocat.mp3 ! decodebin2 ! audioconvert ! wavescope ! colorspace ! ximagesink
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GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=/home/ensonic/Musik/xotox-hypnocat.mp3 ! decodebin2 ! audioconvert ! spectrascope ! colorspace ! ximagesink
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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
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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
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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
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