Merge remote-tracking branch 'qatar/master'

* qatar/master:
  configure: Group math functions into a separate variable
  avutil/mem: K&R formatting cosmetics
  avutil/lzo: K&R formatting cosmetics

Conflicts:
	configure
	libavutil/mem.c

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

4 files changed, 99 insertions, 87 deletions

diff --git a/libavutil/lzo.c b/libavutil/lzo.c
index c61839faa6..79b1ce23ce 100644
--- a/libavutil/lzo.c
+++ b/libavutil/lzo.c
@@ -29,6 +29,7 @@
 #define OUTBUF_PADDED 1
 /// Define if we may read up to 8 bytes beyond the input buffer.
 #define INBUF_PADDED 1
+
 typedef struct LZOContext {
     const uint8_t *in, *in_end;
     uint8_t *out_start, *out, *out_end;
@@ -39,7 +40,8 @@ typedef struct LZOContext {
  * @brief Reads one byte from the input buffer, avoiding an overrun.
  * @return byte read
  */
-static inline int get_byte(LZOContext *c) {
+static inline int get_byte(LZOContext *c)
+{
     if (c->in < c->in_end)
         return *c->in++;
     c->error |= AV_LZO_INPUT_DEPLETED;
@@ -58,10 +60,12 @@ static inline int get_byte(LZOContext *c) {
  * @param mask bits used from x
  * @return decoded length value
  */
-static inline int get_len(LZOContext *c, int x, int mask) {
+static inline int get_len(LZOContext *c, int x, int mask)
+{
     int cnt = x & mask;
     if (!cnt) {
-        while (!(x = get_byte(c))) cnt += 255;
+        while (!(x = get_byte(c)))
+            cnt += 255;
         cnt += mask + x;
     }
     return cnt;
@@ -84,15 +88,16 @@ static inline int get_len(LZOContext *c, int x, int mask) {
  * @brief Copies bytes from input to output buffer with checking.
  * @param cnt number of bytes to copy, must be >= 0
  */
-static inline void copy(LZOContext *c, int cnt) {
+static inline void copy(LZOContext *c, int cnt)
+{
     register const uint8_t *src = c->in;
-    register uint8_t *dst = c->out;
+    register uint8_t *dst       = c->out;
     if (cnt > c->in_end - src) {
-        cnt = FFMAX(c->in_end - src, 0);
+        cnt       = FFMAX(c->in_end - src, 0);
         c->error |= AV_LZO_INPUT_DEPLETED;
     }
     if (cnt > c->out_end - dst) {
-        cnt = FFMAX(c->out_end - dst, 0);
+        cnt       = FFMAX(c->out_end - dst, 0);
         c->error |= AV_LZO_OUTPUT_FULL;
     }
 #if defined(INBUF_PADDED) && defined(OUTBUF_PADDED)
@@ -102,8 +107,8 @@ static inline void copy(LZOContext *c, int cnt) {
     cnt -= 4;
     if (cnt > 0)
 #endif
-        memcpy(dst, src, cnt);
-    c->in = src + cnt;
+    memcpy(dst, src, cnt);
+    c->in  = src + cnt;
     c->out = dst + cnt;
 }
 
@@ -117,22 +122,24 @@ static inline void memcpy_backptr(uint8_t *dst, int back, int cnt);
  * cnt > back is valid, this will copy the bytes we just copied,
  * thus creating a repeating pattern with a period length of back.
  */
-static inline void copy_backptr(LZOContext *c, int back, int cnt) {
+static inline void copy_backptr(LZOContext *c, int back, int cnt)
+{
     register const uint8_t *src = &c->out[-back];
-    register uint8_t *dst = c->out;
+    register uint8_t *dst       = c->out;
     if (src < c->out_start || src > dst) {
         c->error |= AV_LZO_INVALID_BACKPTR;
         return;
     }
     if (cnt > c->out_end - dst) {
-        cnt = FFMAX(c->out_end - dst, 0);
+        cnt       = FFMAX(c->out_end - dst, 0);
         c->error |= AV_LZO_OUTPUT_FULL;
     }
     memcpy_backptr(dst, back, cnt);
     c->out = dst + cnt;
 }
 
-static inline void memcpy_backptr(uint8_t *dst, int back, int 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);
@@ -157,8 +164,8 @@ static inline void memcpy_backptr(uint8_t *dst, int back, int cnt) {
             int blocklen = back;
             while (cnt > blocklen) {
                 memcpy(dst, src, blocklen);
-                dst += blocklen;
-                cnt -= blocklen;
+                dst       += blocklen;
+                cnt       -= blocklen;
                 blocklen <<= 1;
             }
             memcpy(dst, src, cnt);
@@ -166,12 +173,14 @@ static inline void memcpy_backptr(uint8_t *dst, int back, int cnt) {
     }
 }
 
-void av_memcpy_backptr(uint8_t *dst, int back, int 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;
+int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen)
+{
+    int state = 0;
     int x;
     LZOContext c;
     if (*outlen <= 0 || *inlen <= 0) {
@@ -182,16 +191,17 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) {
             res |= AV_LZO_INPUT_DEPLETED;
         return res;
     }
-    c.in = in;
-    c.in_end = (const uint8_t *)in + *inlen;
-    c.out = c.out_start = out;
-    c.out_end = (uint8_t *)out + * outlen;
-    c.error = 0;
-    x = GETB(c);
+    c.in      = in;
+    c.in_end  = (const uint8_t *)in + *inlen;
+    c.out     = c.out_start = out;
+    c.out_end = (uint8_t *)out + *outlen;
+    c.error   = 0;
+    x         = GETB(c);
     if (x > 17) {
         copy(&c, x - 17);
         x = GETB(c);
-        if (x < 16) c.error |= AV_LZO_ERROR;
+        if (x < 16)
+            c.error |= AV_LZO_ERROR;
     }
     if (c.in > c.in_end)
         c.error |= AV_LZO_INPUT_DEPLETED;
@@ -199,16 +209,16 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) {
         int cnt, back;
         if (x > 15) {
             if (x > 63) {
-                cnt = (x >> 5) - 1;
+                cnt  = (x >> 5) - 1;
                 back = (GETB(c) << 3) + ((x >> 2) & 7) + 1;
             } else if (x > 31) {
-                cnt = get_len(&c, x, 31);
-                x = GETB(c);
+                cnt  = get_len(&c, x, 31);
+                x    = GETB(c);
                 back = (GETB(c) << 6) + (x >> 2) + 1;
             } else {
-                cnt = get_len(&c, x, 7);
-                back = (1 << 14) + ((x & 8) << 11);
-                x = GETB(c);
+                cnt   = get_len(&c, x, 7);
+                back  = (1 << 14) + ((x & 8) << 11);
+                x     = GETB(c);
                 back += (GETB(c) << 6) + (x >> 2);
                 if (back == (1 << 14)) {
                     if (cnt != 1)
@@ -216,21 +226,21 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) {
                     break;
                 }
             }
-        } else if(!state){
-                cnt = get_len(&c, x, 15);
-                copy(&c, cnt + 3);
-                x = GETB(c);
-                if (x > 15)
-                    continue;
-                cnt = 1;
-                back = (1 << 11) + (GETB(c) << 2) + (x >> 2) + 1;
+        } else if (!state) {
+            cnt = get_len(&c, x, 15);
+            copy(&c, cnt + 3);
+            x = GETB(c);
+            if (x > 15)
+                continue;
+            cnt  = 1;
+            back = (1 << 11) + (GETB(c) << 2) + (x >> 2) + 1;
         } else {
-                cnt = 0;
-                back = (GETB(c) << 2) + (x >> 2) + 1;
+            cnt  = 0;
+            back = (GETB(c) << 2) + (x >> 2) + 1;
         }
         copy_backptr(&c, back, cnt + 2);
-        state=
-        cnt = x & 3;
+        state =
+        cnt   = x & 3;
         copy(&c, cnt);
         x = GETB(c);
     }
diff --git a/libavutil/lzo.h b/libavutil/lzo.h
index 060b5c9d76..14fb62dd7b 100644
--- a/libavutil/lzo.h
+++ b/libavutil/lzo.h
@@ -32,18 +32,18 @@
 #include <stdint.h>
 
 /** @name Error flags returned by av_lzo1x_decode
-  * @{ */
+ * @{ */
 /// end of the input buffer reached before decoding finished
-#define AV_LZO_INPUT_DEPLETED 1
+#define AV_LZO_INPUT_DEPLETED  1
 /// decoded data did not fit into output buffer
-#define AV_LZO_OUTPUT_FULL 2
+#define AV_LZO_OUTPUT_FULL     2
 /// a reference to previously decoded data was wrong
 #define AV_LZO_INVALID_BACKPTR 4
 /// a non-specific error in the compressed bitstream
-#define AV_LZO_ERROR 8
+#define AV_LZO_ERROR           8
 /** @} */
 
-#define AV_LZO_INPUT_PADDING 8
+#define AV_LZO_INPUT_PADDING   8
 #define AV_LZO_OUTPUT_PADDING 12
 
 /**
diff --git a/libavutil/mem.c b/libavutil/mem.c
index 8ec226b17a..0c1c4b25a0 100644
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@@ -80,47 +80,47 @@ void *av_malloc(size_t size)
 #endif
 
     /* let's disallow possible ambiguous cases */
-    if (size > (max_alloc_size-32))
+    if (size > (max_alloc_size - 32))
         return NULL;
 
 #if CONFIG_MEMALIGN_HACK
-    ptr = malloc(size+ALIGN);
-    if(!ptr)
+    ptr = malloc(size + ALIGN);
+    if (!ptr)
         return ptr;
-    diff= ((-(long)ptr - 1)&(ALIGN-1)) + 1;
-    ptr = (char*)ptr + diff;
-    ((char*)ptr)[-1]= diff;
+    diff              = ((-(long)ptr - 1)&(ALIGN - 1)) + 1;
+    ptr               = (char *)ptr + diff;
+    ((char *)ptr)[-1] = diff;
 #elif HAVE_POSIX_MEMALIGN
     if (size) //OS X on SDK 10.6 has a broken posix_memalign implementation
-    if (posix_memalign(&ptr,ALIGN,size))
+    if (posix_memalign(&ptr, ALIGN, size))
         ptr = NULL;
 #elif HAVE_ALIGNED_MALLOC
     ptr = _aligned_malloc(size, ALIGN);
 #elif HAVE_MEMALIGN
-    ptr = memalign(ALIGN,size);
+    ptr = memalign(ALIGN, size);
     /* Why 64?
-       Indeed, we should align it:
-         on 4 for 386
-         on 16 for 486
-         on 32 for 586, PPro - K6-III
-         on 64 for K7 (maybe for P3 too).
-       Because L1 and L2 caches are aligned on those values.
-       But I don't want to code such logic here!
+     * Indeed, we should align it:
+     *   on  4 for 386
+     *   on 16 for 486
+     *   on 32 for 586, PPro - K6-III
+     *   on 64 for K7 (maybe for P3 too).
+     * Because L1 and L2 caches are aligned on those values.
+     * But I don't want to code such logic here!
      */
-     /* Why 32?
-        For AVX ASM. SSE / NEON needs only 16.
-        Why not larger? Because I did not see a difference in benchmarks ...
+    /* Why 32?
+     * For AVX ASM. SSE / NEON needs only 16.
+     * Why not larger? Because I did not see a difference in benchmarks ...
      */
-     /* benchmarks with P3
-        memalign(64)+1          3071,3051,3032
-        memalign(64)+2          3051,3032,3041
-        memalign(64)+4          2911,2896,2915
-        memalign(64)+8          2545,2554,2550
-        memalign(64)+16         2543,2572,2563
-        memalign(64)+32         2546,2545,2571
-        memalign(64)+64         2570,2533,2558
-
-        BTW, malloc seems to do 8-byte alignment by default here.
+    /* benchmarks with P3
+     * memalign(64) + 1          3071, 3051, 3032
+     * memalign(64) + 2          3051, 3032, 3041
+     * memalign(64) + 4          2911, 2896, 2915
+     * memalign(64) + 8          2545, 2554, 2550
+     * memalign(64) + 16         2543, 2572, 2563
+     * memalign(64) + 32         2546, 2545, 2571
+     * memalign(64) + 64         2570, 2533, 2558
+     *
+     * BTW, malloc seems to do 8-byte alignment by default here.
      */
 #else
     ptr = malloc(size);
@@ -143,15 +143,17 @@ void *av_realloc(void *ptr, size_t size)
 #endif
 
     /* let's disallow possible ambiguous cases */
-    if (size > (max_alloc_size-32))
+    if (size > (max_alloc_size - 32))
         return NULL;
 
 #if CONFIG_MEMALIGN_HACK
     //FIXME this isn't aligned correctly, though it probably isn't needed
-    if(!ptr) return av_malloc(size);
-    diff= ((char*)ptr)[-1];
-    ptr= realloc((char*)ptr - diff, size + diff);
-    if(ptr) ptr = (char*)ptr + diff;
+    if (!ptr)
+        return av_malloc(size);
+    diff = ((char *)ptr)[-1];
+    ptr = realloc((char *)ptr - diff, size + diff);
+    if (ptr)
+        ptr = (char *)ptr + diff;
     return ptr;
 #elif HAVE_ALIGNED_MALLOC
     return _aligned_realloc(ptr, size + !size, ALIGN);
@@ -179,7 +181,7 @@ void av_free(void *ptr)
 {
 #if CONFIG_MEMALIGN_HACK
     if (ptr)
-        free((char*)ptr - ((char*)ptr)[-1]);
+        free((char *)ptr - ((char *)ptr)[-1]);
 #elif HAVE_ALIGNED_MALLOC
     _aligned_free(ptr);
 #else
@@ -189,7 +191,7 @@ void av_free(void *ptr)
 
 void av_freep(void *arg)
 {
-    void **ptr= (void**)arg;
+    void **ptr = (void **)arg;
     av_free(*ptr);
     *ptr = NULL;
 }
@@ -211,8 +213,8 @@ void *av_calloc(size_t nmemb, size_t size)
 
 char *av_strdup(const char *s)
 {
-    char *ptr= NULL;
-    if(s){
+    char *ptr = NULL;
+    if (s) {
         int len = strlen(s) + 1;
         ptr = av_malloc(len);
         if (ptr)
diff --git a/libavutil/mem.h b/libavutil/mem.h
index 212dbf1773..c2f011552d 100644
--- a/libavutil/mem.h
+++ b/libavutil/mem.h
@@ -90,7 +90,7 @@ void *av_malloc(size_t size) av_malloc_attrib av_alloc_size(1);
  * be allocated.
  * @see av_malloc()
  */
-av_alloc_size(1,2) static inline void *av_malloc_array(size_t nmemb, size_t size)
+av_alloc_size(1, 2) static inline void *av_malloc_array(size_t nmemb, size_t size)
 {
     if (size <= 0 || nmemb >= INT_MAX / size)
         return NULL;
@@ -163,7 +163,7 @@ void *av_calloc(size_t nmemb, size_t size) av_malloc_attrib;
  * @see av_mallocz()
  * @see av_malloc_array()
  */
-av_alloc_size(1,2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
+av_alloc_size(1, 2) static inline void *av_mallocz_array(size_t nmemb, size_t size)
 {
     if (size <= 0 || nmemb >= INT_MAX / size)
         return NULL;