joachim/openwebrx-clone
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FFT is somewhat better now

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This commit is contained in:
ha7ilm
2017-05-07 11:04:14 +02:00
parent 0357c8b3ed
commit 51904d2cca
2 changed files with 9 additions and 6 deletions
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10
htdocs/openwebrx.js
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@ -1721,7 +1721,7 @@ var canvas_phantom;
function add_canvas()
{
new_canvas = document.createElement("canvas");
var new_canvas = document.createElement("canvas");
new_canvas.width=fft_size;
new_canvas.height=canvas_default_height;
canvas_actual_line=canvas_default_height-1;
@ -2272,7 +2272,8 @@ function secondary_demod_canvases_update_top()
function secondary_demod_swap_canvases()
{
secondary_demod_canvases[0+!secondary_demod_current_canvas_index].style.openwebrx_top-=$(secondary_demod_canvas_container).height()*2;
console.log("swap");
secondary_demod_canvases[0+!secondary_demod_current_canvas_index].openwebrx_top-=$(secondary_demod_canvas_container).height()*2;
secondary_demod_current_canvas_index=0+!secondary_demod_current_canvas_index;
secondary_demod_current_canvas_context = secondary_demod_canvases[secondary_demod_current_canvas_index].getContext("2d");
secondary_demod_current_canvas_actual_line=$(secondary_demod_canvas_container).height()-1;
@ -2330,6 +2331,8 @@ function secondary_demod_close_window()
toggle_panel("openwebrx-panel-digimodes", false);
}
secondary_demod_fft_offset_db=30; //need to calculate that later
function secondary_demod_waterfall_add(data)
{
if(!secondary_demod) return;
@ -2339,12 +2342,11 @@ function secondary_demod_waterfall_add(data)
var oneline_image = secondary_demod_current_canvas_context.createImageData(w,1);
for(x=0;x<w;x++)
{
var color=waterfall_mkcolor(data[x]+30);
var color=waterfall_mkcolor(data[x]+secondary_demod_fft_offset_db);
for(i=0;i<4;i++) oneline_image.data[x*4+i] = ((color>>>0)>>((3-i)*8))&0xff;
}
//Draw image
console.log(oneline_image);
secondary_demod_current_canvas_context.putImageData(oneline_image, 0, secondary_demod_current_canvas_actual_line--);
secondary_demod_canvases.map((x)=>{x.openwebrx_top += 1;});
secondary_demod_canvases_update_top();