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vsrc_testsrc: do not assume non-padded lines in test_fill_picture()
In particular, fix sliding color bar with padded data, for example with testsrc,pad=iw+200:ih.
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@ -283,7 +283,7 @@ static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
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}
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/* draw sliding color line */
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p = data + picref->linesize[0] * height * 3/4;
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p0 = p = data + picref->linesize[0] * height * 3/4;
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grad = (256 * test->nb_frame * test->time_base.num / test->time_base.den) %
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GRADIENT_SIZE;
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rgrad = 0;
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@ -311,8 +311,9 @@ static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
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if (grad >= GRADIENT_SIZE)
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grad -= GRADIENT_SIZE;
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}
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p = p0;
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for (y = height / 8; y > 0; y--) {
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memcpy(p, p - picref->linesize[0], 3 * width);
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memcpy(p+picref->linesize[0], p, 3 * width);
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p += picref->linesize[0];
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}
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