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swscale: Replace illegal vector keyword usage in altivec code

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While this technically compiles in current ffmpeg, this is only
because ffmpeg is compiled in strict ISO C mode, which disables
the builtin 'vector' keyword for AltiVec/VSX. Instead this gets
replaced with a macro inside altivec.h, which defines vector to
be actually __vector, which accepts random types.

Normally, the vector keyword should be used only with plain
scalar non-typedef types, such as unsigned int. But we have the
vec_(s|u)(8|16|32) macros, which can be used in a portable manner,
in util_altivec.h in libavutil.

This is also consistent with other AltiVec/VSX code elsewhere in
the tree.

Fixes #7861.

Signed-off-by: Daniel Kolesa <daniel@octaforge.org>
Signed-off-by: Lauri Kasanen <cand@gmx.com>
This commit is contained in:
Daniel Kolesa 2019-08-07 19:39:06 +02:00 committed by Lauri Kasanen
parent 581419ea39
commit 1bdb47b734
2 changed files with 459 additions and 459 deletions
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36
libswscale/ppc/swscale_altivec.c
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@ -153,13 +153,13 @@ static void yuv2plane1_float_altivec(const int32_t *src, float *dest, int dstW)
const int add = (1 << (shift - 1));
const int clip = (1 << 16) - 1;
const float fmult = 1.0f / 65535.0f;
const vector uint32_t vadd = (vector uint32_t) {add, add, add, add};
const vector uint32_t vshift = (vector uint32_t) vec_splat_u32(shift);
const vector uint32_t vlargest = (vector uint32_t) {clip, clip, clip, clip};
const vector float vmul = (vector float) {fmult, fmult, fmult, fmult};
const vector float vzero = (vector float) {0, 0, 0, 0};
vector uint32_t v;
vector float vd;
const vec_u32 vadd = (vec_u32) {add, add, add, add};
const vec_u32 vshift = (vec_u32) vec_splat_u32(shift);
const vec_u32 vlargest = (vec_u32) {clip, clip, clip, clip};
const vec_f vmul = (vec_f) {fmult, fmult, fmult, fmult};
const vec_f vzero = (vec_f) {0, 0, 0, 0};
vec_u32 v;
vec_f vd;
int i;
yuv2plane1_float_u(src, dest, dst_u, 0);
@ -186,15 +186,15 @@ static void yuv2plane1_float_bswap_altivec(const int32_t *src, uint32_t *dest, i
const int add = (1 << (shift - 1));
const int clip = (1 << 16) - 1;
const float fmult = 1.0f / 65535.0f;
const vector uint32_t vadd = (vector uint32_t) {add, add, add, add};
const vector uint32_t vshift = (vector uint32_t) vec_splat_u32(shift);
const vector uint32_t vlargest = (vector uint32_t) {clip, clip, clip, clip};
const vector float vmul = (vector float) {fmult, fmult, fmult, fmult};
const vector float vzero = (vector float) {0, 0, 0, 0};
const vector uint32_t vswapbig = (vector uint32_t) {16, 16, 16, 16};
const vector uint16_t vswapsmall = vec_splat_u16(8);
vector uint32_t v;
vector float vd;
const vec_u32 vadd = (vec_u32) {add, add, add, add};
const vec_u32 vshift = (vec_u32) vec_splat_u32(shift);
const vec_u32 vlargest = (vec_u32) {clip, clip, clip, clip};
const vec_f vmul = (vec_f) {fmult, fmult, fmult, fmult};
const vec_f vzero = (vec_f) {0, 0, 0, 0};
const vec_u32 vswapbig = (vec_u32) {16, 16, 16, 16};
const vec_u16 vswapsmall = vec_splat_u16(8);
vec_u32 v;
vec_f vd;
int i;
yuv2plane1_float_bswap_u(src, dest, dst_u, 0);
@ -208,8 +208,8 @@ static void yuv2plane1_float_bswap_altivec(const int32_t *src, uint32_t *dest, i
vd = vec_ctf(v, 0);
vd = vec_madd(vd, vmul, vzero);
vd = (vector float) vec_rl((vector uint32_t) vd, vswapbig);
vd = (vector float) vec_rl((vector uint16_t) vd, vswapsmall);
vd = (vec_f) vec_rl((vec_u32) vd, vswapbig);
vd = (vec_f) vec_rl((vec_u16) vd, vswapsmall);
vec_st(vd, 0, (float *) &dest[i]);
}

620
libswscale/ppc/swscale_vsx.c
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