/usr/share/movit/ycbcr_422interleaved_input.frag is in libmovit5 1.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | // Implicit uniforms:
// uniform sampler2D PREFIX(tex_y);
// uniform sampler2D PREFIX(tex_cbcr);
vec4 FUNCNAME(vec2 tc) {
// OpenGL's origin is bottom-left, but most graphics software assumes
// a top-left origin. Thus, for inputs that come from the user,
// we flip the y coordinate.
tc.y = 1.0 - tc.y;
vec3 ycbcr;
ycbcr.x = tex2D(PREFIX(tex_y), tc).y;
#if CB_CR_OFFSETS_EQUAL
vec2 tc_cbcr = tc;
tc_cbcr.x += PREFIX(cb_offset_x);
ycbcr.yz = tex2D(PREFIX(tex_cbcr), tc_cbcr).xz;
#else
vec2 tc_cb = tc;
tc_cb.x += PREFIX(cb_offset_x);
ycbcr.y = tex2D(PREFIX(tex_cbcr), tc_cb).x;
vec2 tc_cr = tc;
tc_cr.x += PREFIX(cr_offset_x);
ycbcr.z = tex2D(PREFIX(tex_cbcr), tc_cr).z;
#endif
ycbcr -= PREFIX(offset);
vec4 rgba;
rgba.rgb = PREFIX(inv_ycbcr_matrix) * ycbcr;
rgba.a = 1.0;
return rgba;
}
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