libswscale: Relicense almost all x86 assembler optimizations as LGPL.

This is of course done with permissions from the authors. The only GPL
component left are MMX optimizations for YUV to RGB conversion.

Originally committed as revision 30965 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

5 files changed, 59 insertions, 74 deletions

diff --git a/libswscale/rgb2rgb.c b/libswscale/rgb2rgb.c
index 5230a777ac..7d1cefca3a 100644
--- a/libswscale/rgb2rgb.c
+++ b/libswscale/rgb2rgb.c
@@ -8,22 +8,19 @@
  *
  * This file is part of FFmpeg.
  *
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with FFmpeg; if not, write to the Free Software
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * The C code (not assembly, MMX, ...) of this file can be used
- * under the LGPL license.
  */
 #include <inttypes.h>
 #include "config.h"
@@ -101,7 +98,7 @@ void (*yuyvtoyuv422)(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t
                      long lumStride, long chromStride, long srcStride);
 
 
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
 DECLARE_ASM_CONST(8, uint64_t, mmx_null)     = 0x0000000000000000ULL;
 DECLARE_ASM_CONST(8, uint64_t, mmx_one)      = 0xFFFFFFFFFFFFFFFFULL;
 DECLARE_ASM_CONST(8, uint64_t, mask32b)      = 0x000000FF000000FFULL;
@@ -162,7 +159,7 @@ DECLARE_ASM_CONST(8, uint64_t, blue_15mask)  = 0x0000001f0000001fULL;
 #define RENAME(a) a ## _C
 #include "rgb2rgb_template.c"
 
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
 
 //MMX versions
 #undef RENAME
@@ -198,7 +195,7 @@ DECLARE_ASM_CONST(8, uint64_t, blue_15mask)  = 0x0000001f0000001fULL;
 
 void sws_rgb2rgb_init(int flags)
 {
-#if (HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX)  && CONFIG_GPL
+#if HAVE_MMX2 || HAVE_AMD3DNOW || HAVE_MMX
     if (flags & SWS_CPU_CAPS_MMX2)
         rgb2rgb_init_MMX2();
     else if (flags & SWS_CPU_CAPS_3DNOW)
diff --git a/libswscale/rgb2rgb_template.c b/libswscale/rgb2rgb_template.c
index 8d027c1d7a..6cbe42c2db 100644
--- a/libswscale/rgb2rgb_template.c
+++ b/libswscale/rgb2rgb_template.c
@@ -9,22 +9,19 @@
  *
  * This file is part of FFmpeg.
  *
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with FFmpeg; if not, write to the Free Software
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * The C code (not assembly, MMX, ...) of this file can be used
- * under the LGPL license.
  */
 
 #include <stddef.h>
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index e297ef4f58..2b02dd3dfd 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -3,22 +3,19 @@
  *
  * This file is part of FFmpeg.
  *
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with FFmpeg; if not, write to the Free Software
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * the C code (not assembly, mmx, ...) of this file can be used
- * under the LGPL license too
  */
 
 /*
@@ -130,7 +127,7 @@ add BGR4 output support
 write special BGR->BGR scaler
 */
 
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
 DECLARE_ASM_CONST(8, uint64_t, bF8)=       0xF8F8F8F8F8F8F8F8LL;
 DECLARE_ASM_CONST(8, uint64_t, bFC)=       0xFCFCFCFCFCFCFCFCLL;
 DECLARE_ASM_CONST(8, uint64_t, w10)=       0x0010001000100010LL;
@@ -185,7 +182,7 @@ DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV)[2][4] = {
 
 DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;
 
-#endif /* ARCH_X86 && CONFIG_GPL */
+#endif /* ARCH_X86 */
 
 DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4)[2][8]={
 {  1,   3,   1,   3,   1,   3,   1,   3, },
@@ -1154,7 +1151,7 @@ static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uin
 
 //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one
 //Plain C versions
-#if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT
+#if (!HAVE_MMX && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT
 #define COMPILE_C
 #endif
 
@@ -1166,15 +1163,15 @@ static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uin
 
 #if ARCH_X86
 
-#if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
+#if (HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT
 #define COMPILE_MMX
 #endif
 
-#if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
+#if HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT
 #define COMPILE_MMX2
 #endif
 
-#if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
+#if (HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT
 #define COMPILE_3DNOW
 #endif
 #endif //ARCH_X86
@@ -1245,7 +1242,7 @@ SwsFunc ff_getSwsFunc(SwsContext *c)
 #if CONFIG_RUNTIME_CPUDETECT
     int flags = c->flags;
 
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
     // ordered per speed fastest first
     if (flags & SWS_CPU_CAPS_MMX2) {
         sws_init_swScale_MMX2(c);
@@ -1273,7 +1270,7 @@ SwsFunc ff_getSwsFunc(SwsContext *c)
 #endif
     sws_init_swScale_C(c);
     return swScale_C;
-#endif /* ARCH_X86 && CONFIG_GPL */
+#endif /* ARCH_X86 */
 #else //CONFIG_RUNTIME_CPUDETECT
 #if   COMPILE_TEMPLATE_MMX2
     sws_init_swScale_MMX2(c);
diff --git a/libswscale/swscale_template.c b/libswscale/swscale_template.c
index e37837a53d..0d259ed1a0 100644
--- a/libswscale/swscale_template.c
+++ b/libswscale/swscale_template.c
@@ -3,22 +3,19 @@
  *
  * This file is part of FFmpeg.
  *
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with FFmpeg; if not, write to the Free Software
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * The C code (not assembly, MMX, ...) of this file can be used
- * under the LGPL license.
  */
 
 #undef REAL_MOVNTQ
@@ -2258,7 +2255,7 @@ static inline void RENAME(hyscale_fast)(SwsContext *c, int16_t *dst,
                                         long dstWidth, const uint8_t *src, int srcW,
                                         int xInc)
 {
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
 #if COMPILE_TEMPLATE_MMX2
     int32_t *filterPos = c->hLumFilterPos;
     int16_t *filter    = c->hLumFilter;
@@ -2407,7 +2404,7 @@ static inline void RENAME(hcscale_fast)(SwsContext *c, int16_t *dst,
                                         long dstWidth, const uint8_t *src1,
                                         const uint8_t *src2, int srcW, int xInc)
 {
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
 #if COMPILE_TEMPLATE_MMX2
     int32_t *filterPos = c->hChrFilterPos;
     int16_t *filter    = c->hChrFilter;
diff --git a/libswscale/utils.c b/libswscale/utils.c
index 804c01a71a..d7a6ea25b0 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -3,22 +3,19 @@
  *
  * This file is part of FFmpeg.
  *
- * FFmpeg is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with FFmpeg; if not, write to the Free Software
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * the C code (not assembly, mmx, ...) of this file can be used
- * under the LGPL license too
  */
 
 #define _SVID_SOURCE //needed for MAP_ANONYMOUS
@@ -508,7 +505,7 @@ fail:
     return ret;
 }
 
-#if ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
+#if ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT)
 static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)
 {
     uint8_t *fragmentA;
@@ -666,7 +663,7 @@ static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *fil
 
     return fragmentPos + 1;
 }
-#endif /* ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL */
+#endif /* ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) */
 
 static void getSubSampleFactors(int *h, int *v, enum PixelFormat format)
 {
@@ -951,7 +948,7 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat,
 
     /* precalculate horizontal scaler filter coefficients */
     {
-#if ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL
+#if ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT)
 // can't downscale !!!
         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR)) {
             c->lumMmx2FilterCodeSize = initMMX2HScaler(      dstW, c->lumXInc, NULL, NULL, NULL, 8);
@@ -983,7 +980,7 @@ SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat,
             mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ);
 #endif
         } else
-#endif /* ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL */
+#endif /* ARCH_X86 && (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) */
         {
             const int filterAlign=
                 (flags & SWS_CPU_CAPS_MMX) ? 4 :
@@ -1540,7 +1537,7 @@ void sws_freeContext(SwsContext *c)
     av_freep(&c->hLumFilterPos);
     av_freep(&c->hChrFilterPos);
 
-#if ARCH_X86 && CONFIG_GPL
+#if ARCH_X86
 #ifdef MAP_ANONYMOUS
     if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize);
     if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize);
@@ -1553,7 +1550,7 @@ void sws_freeContext(SwsContext *c)
 #endif
     c->lumMmx2FilterCode=NULL;
     c->chrMmx2FilterCode=NULL;
-#endif /* ARCH_X86 && CONFIG_GPL */
+#endif /* ARCH_X86 */
 
     av_freep(&c->yuvTable);