Merge remote-tracking branch 'qatar/master'

* qatar/master:
  avutil: Make LZO decoder code configure-time selectable
  avutil: Move memcpy_backptr() to mem.c
  configure: detect parisc64 automatically
  configure: detect ppc64 automatically
  configure: detect mips64 automatically
  configure: generalise 64-bit test
  smoothstreamingenc: Don't assume streams start from timestamp 0

Conflicts:
	configure
	libavutil/Makefile
	libavutil/lzo.c
	libavutil/lzo.h
	libavutil/mem.c
	libavutil/mem.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>

5 files changed, 53 insertions, 56 deletions

diff --git a/libavutil/Makefile b/libavutil/Makefile
index 3a6f7313ed..88a978f96f 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -27,7 +27,6 @@ HEADERS = adler32.h                                                     \
           intreadwrite.h                                                \
           lfg.h                                                         \
           log.h                                                         \
-          lzo.h                                                         \
           mathematics.h                                                 \
           md5.h                                                         \
           mem.h                                                         \
@@ -47,6 +46,8 @@ HEADERS = adler32.h                                                     \
           version.h                                                     \
           xtea.h                                                        \
 
+HEADERS-$(CONFIG_LZO)                   += lzo.h
+
 ARCH_HEADERS = bswap.h                                                  \
                intmath.h                                                \
                intreadwrite.h                                           \
@@ -77,7 +78,6 @@ OBJS = adler32.o                                                        \
        log.o                                                            \
        log2.o                                                           \
        log2_tab.o                                                       \
-       lzo.o                                                            \
        mathematics.o                                                    \
        md5.o                                                            \
        mem.o                                                            \
@@ -97,6 +97,7 @@ OBJS = adler32.o                                                        \
        xga_font_data.o                                                  \
        xtea.o                                                           \
 
+OBJS-$(CONFIG_LZO)                      += lzo.o
 
 OBJS += $(COMPAT_OBJS:%=../compat/%)
 
diff --git a/libavutil/lzo.c b/libavutil/lzo.c
index 47fc767a06..c723257212 100644
--- a/libavutil/lzo.c
+++ b/libavutil/lzo.c
@@ -100,8 +100,6 @@ static inline void copy(LZOContext *c, int cnt)
     c->out = dst + cnt;
 }
 
-static inline void memcpy_backptr(uint8_t *dst, int back, int cnt);
-
 /**
  * @brief Copies previously decoded bytes to current position.
  * @param back how many bytes back we start, must be > 0
@@ -122,50 +120,10 @@ static inline void copy_backptr(LZOContext *c, int back, int cnt)
         cnt       = FFMAX(c->out_end - dst, 0);
         c->error |= AV_LZO_OUTPUT_FULL;
     }
-    memcpy_backptr(dst, back, cnt);
+    av_memcpy_backptr(dst, back, cnt);
     c->out = dst + cnt;
 }
 
-static inline void memcpy_backptr(uint8_t *dst, int back, int cnt)
-{
-    const uint8_t *src = &dst[-back];
-    if (back <= 1) {
-        memset(dst, *src, cnt);
-    } else {
-        if (cnt >= 4) {
-            AV_COPY16U(dst,     src);
-            AV_COPY16U(dst + 2, src + 2);
-            src += 4;
-            dst += 4;
-            cnt -= 4;
-        }
-        if (cnt >= 8) {
-            AV_COPY16U(dst,     src);
-            AV_COPY16U(dst + 2, src + 2);
-            AV_COPY16U(dst + 4, src + 4);
-            AV_COPY16U(dst + 6, src + 6);
-            src += 8;
-            dst += 8;
-            cnt -= 8;
-        }
-        if (cnt > 0) {
-            int blocklen = back;
-            while (cnt > blocklen) {
-                memcpy(dst, src, blocklen);
-                dst       += blocklen;
-                cnt       -= blocklen;
-                blocklen <<= 1;
-            }
-            memcpy(dst, src, cnt);
-        }
-    }
-}
-
-void av_memcpy_backptr(uint8_t *dst, int back, int cnt)
-{
-    memcpy_backptr(dst, back, cnt);
-}
-
 int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen)
 {
     int state = 0;
diff --git a/libavutil/lzo.h b/libavutil/lzo.h
index 60b7065b15..c03403992d 100644
--- a/libavutil/lzo.h
+++ b/libavutil/lzo.h
@@ -60,17 +60,6 @@
 int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen);
 
 /**
- * @brief deliberately overlapping memcpy implementation
- * @param dst destination buffer
- * @param back how many bytes back we start (the initial size of the overlapping window), must be > 0
- * @param cnt number of bytes to copy, must be >= 0
- *
- * cnt > back is valid, this will copy the bytes we just copied,
- * thus creating a repeating pattern with a period length of back.
- */
-void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
-
-/**
  * @}
  */
 
diff --git a/libavutil/mem.c b/libavutil/mem.c
index 0c1c4b25a0..f3853b0827 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -29,6 +29,7 @@
 #include "config.h"
 
 #include <limits.h>
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #if HAVE_MALLOC_H
@@ -36,6 +37,7 @@
 #endif
 
 #include "avutil.h"
+#include "intreadwrite.h"
 #include "mem.h"
 
 /* here we can use OS-dependent allocation functions */
@@ -244,3 +246,38 @@ void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem)
     *nb_ptr = nb;
 }
 
+void av_memcpy_backptr(uint8_t *dst, int back, int cnt)
+{
+    const uint8_t *src = &dst[-back];
+    if (back <= 1) {
+        memset(dst, *src, cnt);
+    } else {
+        if (cnt >= 4) {
+            AV_COPY16U(dst,     src);
+            AV_COPY16U(dst + 2, src + 2);
+            src += 4;
+            dst += 4;
+            cnt -= 4;
+        }
+        if (cnt >= 8) {
+            AV_COPY16U(dst,     src);
+            AV_COPY16U(dst + 2, src + 2);
+            AV_COPY16U(dst + 4, src + 4);
+            AV_COPY16U(dst + 6, src + 6);
+            src += 8;
+            dst += 8;
+            cnt -= 8;
+        }
+        if (cnt > 0) {
+            int blocklen = back;
+            while (cnt > blocklen) {
+                memcpy(dst, src, blocklen);
+                dst       += blocklen;
+                cnt       -= blocklen;
+                blocklen <<= 1;
+            }
+            memcpy(dst, src, cnt);
+        }
+    }
+}
+
diff --git a/libavutil/mem.h b/libavutil/mem.h
index c2f011552d..ced9453869 100644
--- a/libavutil/mem.h
+++ b/libavutil/mem.h
@@ -27,6 +27,7 @@
 #define AVUTIL_MEM_H
 
 #include <limits.h>
+#include <stdint.h>
 
 #include "attributes.h"
 #include "error.h"
@@ -217,6 +218,17 @@ static inline int av_size_mult(size_t a, size_t b, size_t *r)
 void av_max_alloc(size_t max);
 
 /**
+ * @brief deliberately overlapping memcpy implementation
+ * @param dst destination buffer
+ * @param back how many bytes back we start (the initial size of the overlapping window), must be > 0
+ * @param cnt number of bytes to copy, must be >= 0
+ *
+ * cnt > back is valid, this will copy the bytes we just copied,
+ * thus creating a repeating pattern with a period length of back.
+ */
+void av_memcpy_backptr(uint8_t *dst, int back, int cnt);
+
+/**
  * @}
  */