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swscale/ops: add type assertions to ff_sws_apply_op_q()

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Niklas Haas
2025-12-16 00:33:30 +01:00
committed by Niklas Haas
parent 258dbfdbc9
commit d1eaea1a03
1 changed files with 9 additions and 2 deletions
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11
libswscale/ops.c
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@@ -114,21 +114,24 @@ void ff_sws_apply_op_q(const SwsOp *op, AVRational x[4])
case SWS_OP_WRITE:
return;
case SWS_OP_UNPACK: {
unsigned val = x[0].num;
av_assert1(ff_sws_pixel_type_is_int(op->type));
ff_sws_pack_op_decode(op, mask, shift);
unsigned val = x[0].num;
for (int i = 0; i < 4; i++)
x[i] = Q((val >> shift[i]) & mask[i]);
return;
}
case SWS_OP_PACK: {
unsigned val = 0;
av_assert1(ff_sws_pixel_type_is_int(op->type));
ff_sws_pack_op_decode(op, mask, shift);
unsigned val = 0;
for (int i = 0; i < 4; i++)
val |= (x[i].num & mask[i]) << shift[i];
x[0] = Q(val);
return;
}
case SWS_OP_SWAP_BYTES:
av_assert1(ff_sws_pixel_type_is_int(op->type));
switch (ff_sws_pixel_type_size(op->type)) {
case 2:
for (int i = 0; i < 4; i++)
@@ -147,12 +150,14 @@ void ff_sws_apply_op_q(const SwsOp *op, AVRational x[4])
}
return;
case SWS_OP_LSHIFT: {
av_assert1(ff_sws_pixel_type_is_int(op->type));
AVRational mult = Q(1 << op->c.u);
for (int i = 0; i < 4; i++)
x[i] = x[i].den ? av_mul_q(x[i], mult) : x[i];
return;
}
case SWS_OP_RSHIFT: {
av_assert1(ff_sws_pixel_type_is_int(op->type));
AVRational mult = Q(1 << op->c.u);
for (int i = 0; i < 4; i++)
x[i] = x[i].den ? av_div_q(x[i], mult) : x[i];
@@ -175,6 +180,7 @@ void ff_sws_apply_op_q(const SwsOp *op, AVRational x[4])
}
return;
case SWS_OP_DITHER:
av_assert1(!ff_sws_pixel_type_is_int(op->type));
for (int i = 0; i < 4; i++)
x[i] = x[i].den ? av_add_q(x[i], av_make_q(1, 2)) : x[i];
return;
@@ -187,6 +193,7 @@ void ff_sws_apply_op_q(const SwsOp *op, AVRational x[4])
x[i] = av_max_q(x[i], op->c.q4[i]);
return;
case SWS_OP_LINEAR: {
av_assert1(!ff_sws_pixel_type_is_int(op->type));
const AVRational orig[4] = { x[0], x[1], x[2], x[3] };
for (int i = 0; i < 4; i++) {
AVRational sum = op->lin.m[i][4];