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

1 files changed, 14 insertions, 17 deletions

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);