diff options
Diffstat (limited to 'gst/audiovisualizers/README')
| -rw-r--r-- | gst/audiovisualizers/README | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/gst/audiovisualizers/README b/gst/audiovisualizers/README index d1a8c05eb..be2491e06 100644 --- a/gst/audiovisualizers/README +++ b/gst/audiovisualizers/README @@ -3,9 +3,8 @@ 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. -Some effects could be enhanced by running geometrictransform elements -afterwards. A blur and/or videozoom element would be great (vertigotv looks -great but has some negotiation issues). +Some effects could be enhanced by running geometrictransform/effecttc elements +afterwards. = Feedback = * put 'Audio' to klass as well ? @@ -36,17 +35,35 @@ spectrascope - done spacescope - stereo wavescope - left->x, right->y - done - polar mapping -multiscope : -- like wave/space scope, but run the signal through two filters to split it into - bass, mid and high (200 Hz, 2000 Hz) -- draw 3 wave-scopes into red/gree/blue -- when drawing only draw that component to mix colors -- eventually use the spacescope-position to rotate/shift the wave +wavescope +- we could have a bouncing line as a base, like a quix: + - two dots moving on a linear path and getting a new random dx,dy when hitting + a border + - the abs(dx/dy) - speed of movement - could be scaled by the sound level + - we would need to rotate, stretch and clip the waveform drawing to fit the + line + - we could scratch the rotate part and just stretch/squeeze x and shift/clip y + +xxxscope +- have a matrix of source and drawing-functions + - sources: audio, spectrum, audio-low, audio-mid, audio-hi + - drawing: waves (style, color), space (style,color) +- have the usual shade and move operations +- have a way to draw each operator in one or more color-channels +- we could calculate the sound-level (like in level element) and modulate + colors/movements + - for filtered low/mid/hi audio we could use different peak-falloffs = TODO = - element maker template - test for baseclass +- we probably want a VisBin like the gnome video effects +- this way we can specify pipeline fragments +- VisBin can use a videomixer to switch effects based on time or song +- VisBin can e.g. control a text-overlay to render the title into the + visualisation for a while + = Test it = GST_DEBUG="*:2,*scope*:4" @@ -55,6 +72,7 @@ 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=$HOME/Music/1.mp3 ! decodebin2 ! audioconvert ! wavescope ! colorspace ! ximagesink +GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=$HOME/Music/1.mp3 ! decodebin2 ! audioconvert ! wavescope style=lines shade-amount=0x00080402 ! edgetv ! vertigotv ! ximagesink GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=$HOME/Music/1.mp3 ! decodebin2 ! audioconvert ! spacescope style=lines shade-amount=0x00080402 ! ximagesink GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=$HOME/Music/1.mp3 ! decodebin2 ! audioconvert ! spacescope style=lines shade-amount=0x00080402 ! vertigotv ! ximagesink |