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Set frame size to video codec context size, nicer rgb to nv12

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dec05eba
2024-03-07 22:53:04 +01:00
parent 0d89378021
commit 3d9a706528
10 changed files with 46 additions and 22 deletions
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14
study/create_matrix.py
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@@ -9,6 +9,12 @@ def usage():
print(" create_matrix.py 0.2126 0.7152 0.0722 limited")
exit(1)
def a(v):
if v >= 0:
return " %f" % v
else:
return "%f" % v
def main(argv):
if len(argv) != 5:
usage()
@@ -34,9 +40,9 @@ def main(argv):
]
# Transform from row major to column major for glsl
print("%f, %f, %f, %f" % (matrix[0][0] * transform_range, matrix[1][0] * transform_range, matrix[2][0] * transform_range, 0.0))
print("%f, %f, %f, %f" % (matrix[0][1] * transform_range, matrix[1][1] * transform_range, matrix[2][1] * transform_range, 0.0))
print("%f, %f, %f, %f" % (matrix[0][2] * transform_range, matrix[1][2] * transform_range, matrix[2][2] * transform_range, 0.0))
print("%f, %f, %f, %f" % (matrix[3][0] + luma_offset, matrix[3][1], matrix[3][2], 1.0))
print("const mat4 RGBtoYUV = mat4(%f, %s, %s, %f," % (matrix[0][0] * transform_range, a(matrix[1][0] * transform_range), a(matrix[2][0] * transform_range), 0.0))
print(" %f, %s, %s, %f," % (matrix[0][1] * transform_range, a(matrix[1][1] * transform_range), a(matrix[2][1] * transform_range), 0.0))
print(" %f, %s, %s, %f," % (matrix[0][2] * transform_range, a(matrix[1][2] * transform_range), a(matrix[2][2] * transform_range), 0.0))
print(" %f, %s, %s, %f);" % (matrix[3][0] + luma_offset, a(matrix[3][1]), a(matrix[3][2]), 1.0))
main(sys.argv)