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Static and dynamic plugins now have the same interface. The standard --enable-static/--enable-shared toggle are sufficient. |
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.. | ||
gstdrawhelpers.h | ||
gstspacescope.c | ||
gstspacescope.h | ||
gstspectrascope.c | ||
gstspectrascope.h | ||
gstsynaescope.c | ||
gstsynaescope.h | ||
gstwavescope.c | ||
gstwavescope.h | ||
Makefile.am | ||
meson.build | ||
plugin.c | ||
README |
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. Some effects could be enhanced by running geometrictransform/effecttc elements afterwards. = Feedback = * put 'Audio' to klass as well ? = API = * we have a couple of drawing helpers in gstdrawhelpers.h (would be nice if we could use cairo) draw_point (x,y,color); draw_line (x1,x2,y1,y2,color); * some more we could add: 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 * 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 - we need to handle visualizer that don't draw with alpha: - add API to set can_mix and if so enable shaders - ev. do mixing ourself (needs extra buffer) = Elements to port = gst-plugins-ugly/gst/synaestesia -> synaescope gst-plugins-bad/gst/smoothwave -> wavescope gst-plugins-good/gst/monoscope -> blend into what we have in wavescope - it keeps an array of the values we just showed last[width] - each audio-buffer is 2*width - it uses convolution to finde the best match in current[2*width] compared to last[width] - then it shows current[match ... match+width] and copies it into last gst-plugins-base/ext/libvisual - done = Elements to add = spectrascope - done spacescope - stereo wavescope - left->x, right->y - done - polar mapping 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 - actors - we use the wave, filtered waves, balance and fft so far - we could have narrow filters over harmonic frequencies - we could use loudness like determined in level-meter - 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" GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-inspect scopes == 0.10 == 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 GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=$HOME/Music/1.mp3 ! decodebin2 ! audioconvert ! spectrascope ! colorspace ! ximagesink GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD gst-launch filesrc location=$HOME/Music/1.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=$HOME/Music/1.mp3 ! decodebin2 ! tee name=t ! queue ! audioconvert ! synaesthesia ! ximagesink t. ! queue ! synaescope shade-amount=0x00040404 ! colorspace ! ximagesink == 0.11/1.0 == gst-launch-1.0 audiotestsrc ! audioconvert ! wavescope ! videoconvert ! ximagesink gst-launch-1.0 filesrc location=$HOME/Music/1.mp3 ! decodebin ! audioconvert ! spectrascope ! videoconvert ! ximagesink gst-launch-1.0 filesrc location=$HOME/Music/1.mp3 ! decodebin ! tee name=t ! queue ! audioconvert ! wavescope style=color-lines shade-amount=0x00080402 ! alpha alpha=0.5 ! videomixer name=m background=black ! videoconvert ! vertigotv ! ximagesink t. ! queue ! audioconvert ! spacescope style=color-lines shade-amount=0x00080402 ! alpha alpha=0.5 ! m. t. ! queue ! autoaudiosink