Merge remote-tracking branch 'qatar/master'

* qatar/master:
  fate: Allow setting the ld parameter from the config file
  x86: dsputil: Do not redundantly check for CPU caps before calling init funcs
  configure: Disable some warnings in MSVC
  x86: vp56: cmov version of vp56_rac_get_prob requires inline asm
  avopt: fix examples to match the same style about default values as the actual code.
  configure: Add support for MSVC cl.exe/link.exe
  lavu: add snprintf(), vsnprint() and strtod() replacements for MS runtime.

Conflicts:
	libavutil/opt.h

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

compat/msvcrt/snprintf.c

@@ -0,0 +1,63 @@
+/*
+ * C99-compatible snprintf() and vsnprintf() implementations
+ * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * 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
+ */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <limits.h>
+#include <string.h>
+
+#include "libavutil/error.h"
+
+int avpriv_snprintf(char *s, size_t n, const char *fmt, ...)
+{
+    va_list ap;
+    int ret;
+
+    va_start(ap, fmt);
+    ret = avpriv_vsnprintf(s, n, fmt, ap);
+    va_end(ap);
+
+    return ret;
+}
+
+int avpriv_vsnprintf(char *s, size_t n, const char *fmt,
+                     va_list ap)
+{
+    int ret;
+
+    if (n == 0)
+        return 0;
+    else if (n > INT_MAX)
+        return AVERROR(EOVERFLOW);
+
+    /* we use n - 1 here because if the buffer is not big enough, the MS
+     * runtime libraries don't add a terminating zero at the end. MSDN
+     * recommends to provide _snprintf/_vsnprintf() a buffer size that
+     * is one less than the actual buffer, and zero it before calling
+     * _snprintf/_vsnprintf() to workaround this problem.
+     * See http://msdn.microsoft.com/en-us/library/1kt27hek(v=vs.80).aspx */
+    memset(s, 0, n);
+    ret = _vsnprintf(s, n - 1, fmt, ap);
+    if (ret == -1)
+        ret = n;
+
+    return ret;
+}

compat/strtod.c

@@ -0,0 +1,94 @@
+/*
+ * C99-compatible strtod() implementation
+ * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * 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
+ */
+
+#include <ctype.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#include "libavutil/avstring.h"
+#include "libavutil/mathematics.h"
+
+static char *check_nan_suffix(char *s)
+{
+    char *start = s;
+
+    if (*s++ != '(')
+        return start;
+
+    while ((*s >= 'a' && *s <= 'z') || (*s >= 'A' && *s <= 'Z') ||
+           (*s >= '0' && *s <= '9') ||  *s == '_')
+        s++;
+
+    return *s == ')' ? s + 1 : start;
+}
+
+#undef strtod
+double strtod(const char *, char **);
+
+double avpriv_strtod(const char *nptr, char **endptr)
+{
+    char *end;
+    double res;
+
+    /* Skip leading spaces */
+    while (isspace(*nptr))
+        nptr++;
+
+    if (!av_strncasecmp(nptr, "infinity", 8)) {
+        end = nptr + 8;
+        res = INFINITY;
+    } else if (!av_strncasecmp(nptr, "inf", 3)) {
+        end = nptr + 3;
+        res = INFINITY;
+    } else if (!av_strncasecmp(nptr, "+infinity", 9)) {
+        end = nptr + 9;
+        res = INFINITY;
+    } else if (!av_strncasecmp(nptr, "+inf", 4)) {
+        end = nptr + 4;
+        res = INFINITY;
+    } else if (!av_strncasecmp(nptr, "-infinity", 9)) {
+        end = nptr + 9;
+        res = -INFINITY;
+    } else if (!av_strncasecmp(nptr, "-inf", 4)) {
+        end = nptr + 4;
+        res = -INFINITY;
+    } else if (!av_strncasecmp(nptr, "nan", 3)) {
+        end = check_nan_suffix(nptr + 3);
+        res = NAN;
+    } else if (!av_strncasecmp(nptr, "+nan", 4) ||
+               !av_strncasecmp(nptr, "-nan", 4)) {
+        end = check_nan_suffix(nptr + 4);
+        res = NAN;
+    } else if (!av_strncasecmp(nptr, "0x", 2) ||
+               !av_strncasecmp(nptr, "-0x", 3) ||
+               !av_strncasecmp(nptr, "+0x", 3)) {
+        /* FIXME this doesn't handle exponents, non-integers (float/double)
+         * and numbers too large for long long */
+        res = strtoll(nptr, &end, 16);
+    } else {
+        res = strtod(nptr, &end);
+    }
+
+    if (endptr)
+        *endptr = end;
+
+    return res;
+}

configure

@@ -1330,6 +1330,7 @@ HAVE_LIST="
     mkstemp
     mm_empty
     mmap
+    msvcrt
     nanosleep
     PeekNamedPipe
     perl
@@ -2369,6 +2370,26 @@ EOF
     die "Sanity test failed."
 fi
 
+msvc_flags(){
+    for flag; do
+        case $flag in
+            -fomit-frame-pointer) echo -Oy ;;
+            -g)                   echo -Z7 ;;
+            -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
+                                       -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
+                                       -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
+                                       -wd4996 ;;
+            -std=c99)             ;;
+            -fno-math-errno)      ;;
+            -fno-common)          ;;
+            -fno-signed-zeros)    ;;
+            -lz)                  echo zlib.lib ;;
+            -l*)                  echo ${flag#-l}.lib ;;
+            *)                    echo $flag ;;
+        esac
+    done
+}
+
 pgi_flags(){
     for flag; do
         case $flag in
@@ -2555,6 +2576,29 @@ probe_cc(){
         _cflags_size="-O2 -Munroll=c:1 $opt_common"
         _cflags_noopt="-O1"
         _flags_filter=pgi_flags
+    elif $_cc 2>&1 | grep -q Microsoft; then
+        _type=msvc
+        _ident=$($cc 2>&1 | head -n1)
+        _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
+        _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
+        _cflags_speed="-O2"
+        _cflags_size="-O1"
+        # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
+        if $_cc 2>&1 | grep -q Linker; then
+            _ld_o='-out $@'
+        else
+            _ld_o='-Fe$@'
+        fi
+        _cc_o='-Fo $@'
+        _flags_filter=msvc_flags
+        _ld_lib='lib%.a'
+        _ld_path='-libpath:'
+        _flags='-nologo'
+        _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
+        if [ $pfx = hostcc ]; then
+            _cflags="$cflags -Dsnprintf=_snprintf"
+        fi
+        disable aligned_stack
     fi
 
     eval ${pfx}_type=\$_type
@@ -3117,6 +3161,12 @@ elif check_header _mingw.h; then
         die "ERROR: MinGW runtime version must be >= 3.15."
 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
     libc_type=newlib
+elif check_func_headers stdlib.h _get_doserrno; then
+    libc_type=msvcrt
+    add_cflags -Dstrtod=avpriv_strtod
+    add_cflags -Dsnprintf=avpriv_snprintf   \
+               -D_snprintf=avpriv_snprintf  \
+               -Dvsnprintf=avpriv_vsnprintf
 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
     libc_type=klibc
 fi

libavcodec/x86/dsputil_mmx.c

@@ -3189,13 +3189,13 @@ void ff_dsputil_init_mmx(DSPContext *c, AVCodecContext *avctx)
     if (mm_flags & AV_CPU_FLAG_MMXEXT)
         dsputil_init_mmx2(c, avctx, mm_flags);
 
-    if (mm_flags & AV_CPU_FLAG_3DNOW && HAVE_AMD3DNOW)
+    if (mm_flags & AV_CPU_FLAG_3DNOW)
         dsputil_init_3dnow(c, avctx, mm_flags);
 
-    if (mm_flags & AV_CPU_FLAG_3DNOWEXT && HAVE_AMD3DNOWEXT)
+    if (mm_flags & AV_CPU_FLAG_3DNOWEXT)
         dsputil_init_3dnowext(c, avctx, mm_flags);
 
-    if (mm_flags & AV_CPU_FLAG_SSE && HAVE_SSE)
+    if (mm_flags & AV_CPU_FLAG_SSE)
         dsputil_init_sse(c, avctx, mm_flags);
 
     if (mm_flags & AV_CPU_FLAG_SSE2)
@@ -3204,7 +3204,7 @@ void ff_dsputil_init_mmx(DSPContext *c, AVCodecContext *avctx)
     if (mm_flags & AV_CPU_FLAG_SSSE3)
         dsputil_init_ssse3(c, avctx, mm_flags);
 
-    if (mm_flags & AV_CPU_FLAG_SSE4 && HAVE_SSE)
+    if (mm_flags & AV_CPU_FLAG_SSE4)
         dsputil_init_sse4(c, avctx, mm_flags);
 
     if (mm_flags & AV_CPU_FLAG_AVX)

libavcodec/x86/vp56_arith.h

@@ -24,7 +24,7 @@
 #ifndef AVCODEC_X86_VP56_ARITH_H
 #define AVCODEC_X86_VP56_ARITH_H
 
-#if HAVE_FAST_CMOV
+#if HAVE_INLINE_ASM && HAVE_FAST_CMOV
 #define vp56_rac_get_prob vp56_rac_get_prob
 static av_always_inline int vp56_rac_get_prob(VP56RangeCoder *c, uint8_t prob)
 {

libavutil/Makefile

@@ -94,6 +94,9 @@ OBJS = adler32.o                                                        \
        utils.o                                                          \
        xtea.o                                                           \
 
+OBJS-$(HAVE_MSVCRT) += ../compat/msvcrt/snprintf.o                      \
+                       ../compat/strtod.o
+
 TESTPROGS = adler32                                                     \
             aes                                                         \
             avstring                                                    \

libavutil/opt.h

@@ -64,7 +64,7 @@
  *
  * static const AVOption options[] = {
  *   { "test_int", "This is a test option of int type.", offsetof(test_struct, int_opt),
- *     AV_OPT_TYPE_INT, {.i64 = -1 }, INT_MIN, INT_MAX },
+ *     AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX },
  *   { "test_str", "This is a test option of string type.", offsetof(test_struct, str_opt),
  *     AV_OPT_TYPE_STRING },
  *   { "test_bin", "This is a test option of binary type.", offsetof(test_struct, bin_opt),
@@ -123,7 +123,7 @@
  *      } child_struct;
  *      static const AVOption child_opts[] = {
  *          { "test_flags", "This is a test option of flags type.",
- *            offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, INT_MIN, INT_MAX },
+ *            offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX },
  *          { NULL },
  *      };
  *      static const AVClass child_class = {
@@ -170,8 +170,8 @@
  *      above, put the following into the child_opts array:
  *      @code
  *      { "test_flags", "This is a test option of flags type.",
- *        offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, INT_MIN, INT_MAX, "test_unit" },
- *      { "flag1", "This is a flag with value 16", 0, AV_OPT_TYPE_CONST, {.i64 = 16 }, 0, 0, "test_unit" },
+ *        offsetof(child_struct, flags_opt), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, "test_unit" },
+ *      { "flag1", "This is a flag with value 16", 0, AV_OPT_TYPE_CONST, { .i64 = 16 }, 0, 0, "test_unit" },
  *      @endcode
  *
  * @section avoptions_use Using AVOptions

tests/fate.sh

@@ -50,6 +50,7 @@ configure()(
         ${cpu:+--cpu="$cpu"}                                            \
         ${cross_prefix:+--cross-prefix="$cross_prefix"}                 \
         ${cc:+--cc="$cc"}                                               \
+        ${ld:+--ld="$ld"}                                               \
         ${target_os:+--target-os="$target_os"}                          \
         ${sysroot:+--sysroot="$sysroot"}                                \
         ${target_exec:+--target-exec="$target_exec"}                    \