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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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d6258153e0
Original commit message from CVS: * removal of //-style comments * don't link plugins to core libs -- the versioning is done internally to the plugins with the plugin_info struct, and symbol resolution is lazy, so we can always know if a plugin can be loaded by the plugin_info data. in theory.
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/*
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* lines.c
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* iTunesXPlugIn
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*
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* Created by guillaum on Tue Aug 14 2001.
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* Copyright (c) 2001 __CompanyName__. All rights reserved.
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*
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*/
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#include "lines.h"
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#include <math.h>
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extern unsigned int resolx,resoly;
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inline unsigned char lighten(unsigned char value,unsigned char power)
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{
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unsigned char i;
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for (i=0;i < power; i++) value += (255-value)/5;
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return value;
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}
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void goom_lines(gint16 data [2][512], unsigned int ID,unsigned int* p, guint32 power)
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{
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guint32 color1;
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guint32 color2;
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unsigned char * color = 1 + (unsigned char *) &color1;
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switch (ID)
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{
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case 0: /* Horizontal stereo lines */
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{
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color1 = 0x0000AA00;
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color2 = 0x00AA0000;
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break;
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}
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case 1: /* Stereo circles */
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{
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color1 = 0x00AA33DD;
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color2 = 0x00AA33DD;
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break;
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}
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}
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*color = lighten(*color,power);
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color++;
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* color = lighten(*color,power);
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color++;
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* color = lighten(*color,power);
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color = 1 + (unsigned char *) &color2;
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* color = lighten(*color,power);
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color++;
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* color = lighten(*color,power);
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color++;
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* color = lighten(*color,power);
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switch (ID)
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{
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case 0: /* Horizontal stereo lines */
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{
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unsigned int i;
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for (i=0;i<512;i++)
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{
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guint32 plot ;
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plot = i * resolx / 512 + (resoly / 4 + data[0][i] / 1600) * resolx;
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p[plot] = color1;
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p[plot+1] = color1;
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plot = i * resolx / 512 + (resoly * 3 / 4 - data[1][i] / 1600) * resolx;
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p[plot] = color2;
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p[plot+1] = color2;
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}
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break;
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}
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case 1: /* Stereo circles */
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{
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float z;
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unsigned int monX = resolx/2;
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float monY = resoly/4;
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float monY2 = resoly/2;
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for (z=0;z<6.2832f; z+=1.0f/monY)
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{
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/* float offset1 = 128+data[1][(unsigned int)(z*81.33f)])/200000; */
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p[ monX + (unsigned int)( (monY + ((float)resoly) * (128+data[1][(unsigned int)(z*81.33f)])/200000) * cos (z) + resolx * (unsigned int)( monY2 + (monY + ((float)resoly)*(128+data[1][(unsigned int)(z*81.33f)])/400000) * sin (z)))] = color1;
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p[ monX + (unsigned int)((monY - ((float)resoly) * (128+data[0][(unsigned int)(z*81.33f)])/200000) * cos (z) + resolx * (unsigned int)( monY2 + (monY - ((float)resoly)*(128+data[0][(unsigned int)(z*81.33f)])/400000) * sin (z)))] = color2;
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}
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break;
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}
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}
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}
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