videoconvert: actually use the input pixels
Operate on the provided pixels array instead of the temp array.
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38317e3f09
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620e3aad07
@ -332,15 +332,14 @@ static void
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videoconvert_dither_verterr (VideoConvert * convert, guint16 * pixels, int j)
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videoconvert_dither_verterr (VideoConvert * convert, guint16 * pixels, int j)
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{
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{
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int i;
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int i;
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guint16 *tmpline = convert->tmpline;
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guint16 *errline = convert->errline;
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guint16 *errline = convert->errline;
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unsigned int mask = 0xff;
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unsigned int mask = 0xff;
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for (i = 0; i < 4 * convert->width; i++) {
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for (i = 0; i < 4 * convert->width; i++) {
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int x = tmpline[i] + errline[i];
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int x = pixels[i] + errline[i];
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if (x > 65535)
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if (x > 65535)
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x = 65535;
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x = 65535;
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tmpline[i] = x;
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pixels[i] = x;
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errline[i] = x & mask;
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errline[i] = x & mask;
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}
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}
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}
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}
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@ -349,7 +348,6 @@ static void
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videoconvert_dither_halftone (VideoConvert * convert, guint16 * pixels, int j)
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videoconvert_dither_halftone (VideoConvert * convert, guint16 * pixels, int j)
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{
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{
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int i;
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int i;
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guint16 *tmpline = convert->tmpline;
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static guint16 halftone[8][8] = {
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static guint16 halftone[8][8] = {
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{0, 128, 32, 160, 8, 136, 40, 168},
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{0, 128, 32, 160, 8, 136, 40, 168},
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{192, 64, 224, 96, 200, 72, 232, 104},
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{192, 64, 224, 96, 200, 72, 232, 104},
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@ -363,10 +361,10 @@ videoconvert_dither_halftone (VideoConvert * convert, guint16 * pixels, int j)
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for (i = 0; i < convert->width * 4; i++) {
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for (i = 0; i < convert->width * 4; i++) {
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int x;
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int x;
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x = tmpline[i] + halftone[(i >> 2) & 7][j & 7];
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x = pixels[i] + halftone[(i >> 2) & 7][j & 7];
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if (x > 65535)
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if (x > 65535)
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x = 65535;
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x = 65535;
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tmpline[i] = x;
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pixels[i] = x;
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}
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}
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}
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}
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