ffmpeg-4/ffmpeg4_swscale_fix_altivec_vsx_recent_gcc.patch

From daniel at octaforge.org  Tue Aug  6 18:55:37 2019
From: daniel at octaforge.org (Daniel Kolesa)
Date: Tue,  6 Aug 2019 17:55:37 +0200
Subject: [FFmpeg-devel] [PATCH 2/2] swscale: Fix AltiVec/VSX build with
	recent GCC
In-Reply-To: <20190806155537.25535-1-daniel@octaforge.org>
References: <20190806155537.25535-1-daniel@octaforge.org>
Message-ID: <20190806155537.25535-3-daniel@octaforge.org>

The argument to vec_splat_u16 must be a literal. By making the
function always inline and marking the arguments const, gcc can
turn those into literals, and avoid build errors like:

swscale_vsx.c:165:53: error: argument 1 must be a 5-bit signed literal

Signed-off-by: Daniel Kolesa <daniel at octaforge.org>
---
 libswscale/ppc/swscale_vsx.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

Index: ffmpeg-4.2/libswscale/ppc/swscale_vsx.c
===================================================================
--- ffmpeg-4.2.orig/libswscale/ppc/swscale_vsx.c
+++ ffmpeg-4.2/libswscale/ppc/swscale_vsx.c
@@ -154,8 +154,10 @@ static void yuv2plane1_nbps_u(const int1
     }
 }
 
-static void yuv2plane1_nbps_vsx(const int16_t *src, uint16_t *dest, int dstW,
-                           int big_endian, int output_bits)
+static av_always_inline void yuv2plane1_nbps_vsx(const int16_t *src,
+                                                 uint16_t *dest, int dstW,
+                                                 const int big_endian,
+                                                 const int output_bits)
 {
     const int dst_u = -(uintptr_t)dest & 7;
     const int shift = 15 - output_bits;
@@ -273,8 +275,10 @@ static void yuv2plane1_16_u(const int32_
     }
 }
 
-static void yuv2plane1_16_vsx(const int32_t *src, uint16_t *dest, int dstW,
-                           int big_endian, int output_bits)
+static av_always_inline void yuv2plane1_16_vsx(const int32_t *src,
+                                               uint16_t *dest, int dstW,
+                                               const int big_endian,
+                                               int output_bits)
 {
     const int dst_u = -(uintptr_t)dest & 7;
     const int shift = 3;