x264: preliminary compilation script

Adding files that allow for compilation of x264 codec with CLI tool.
Succesfull compialtion, unsuccesful in runtime, does not compress.

JIRA: PP-213

build.sh

@@ -78,4 +78,6 @@ fi
 
 [ "${PORTS_COREMARK}" = "y" ] && ./phoenix-rtos-ports/coremark/build.sh
 
+[ "${PORTS_X264}" = "y" ] && ./phoenix-rtos-ports/x264/build.sh
+
 exit 0

x264/build.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -e
+
+PREFIX_X264="${PREFIX_PROJECT}/phoenix-rtos-ports/x264"
+PREFIX_X264_BUILD="${PREFIX_BUILD}/x264"
+PREFIX_X264_CONFIG="${PREFIX_X264}/patches"
+PREFIX_X264_MARKERS="$PREFIX_X264_BUILD/markers"
+
+b_log "Building x264"
+
+#
+# Download and unpack
+#
+if [ ! -d "$PREFIX_X264_BUILD" ]; then
+	if ! git clone https://code.videolan.org/videolan/x264.git "$PREFIX_X264_BUILD"; then
+        echo "No mirror available"
+        exit 1
+	fi
+    (cd "$PREFIX_X264_BUILD" && git checkout master && git reset --hard 4613ac3c15fd75cebc4b9f65b7fb95e70a3acce1)
+    mkdir -p "$PREFIX_X264_MARKERS"
+fi
+
+#
+# Apply patches
+#
+for patchfile in "$PREFIX_X264_CONFIG"/*.patch; do
+	if [ ! -f "$PREFIX_X264_MARKERS/$(basename "$patchfile").applied" ]; then
+		echo "applying patch: $patchfile"
+		patch -d "$PREFIX_X264_BUILD" -p1 < "$patchfile"
+		touch "$PREFIX_X264_MARKERS/$(basename "$patchfile").applied"
+	fi
+done
+
+#
+# Prepare CFLAGS and LDFLAGS for x264 configure & Makefile
+# 
+export LDFLAGS_EXTRA="${CFLAGS} ${LDFLAGS}"
+export CFLAGS_EXTRA="${CFLAGS}"
+export LDFLAGS=""
+export CFLAGS=""
+
+#
+# Build and install x264 binary
+#
+(cd "$PREFIX_X264_BUILD" && ./configure --extra-cflags="$CFLAGS_EXTRA" --extra-ldflags="$LDFLAGS_EXTRA" --cross-prefix="$CROSS" --sysroot="$PREFIX_BUILD/sysroot/" --host=arm-linux --disable-asm --disable-avs --disable-lavf --enable-pic --enable-static --disable-opencl)
+(cd "$PREFIX_X264_BUILD" && make)
+
+cp -a "${PREFIX_X264_BUILD}/x264" "$PREFIX_PROG_STRIPPED"
+b_install "$PREFIX_PORTS_INSTALL/x264" /bin/

x264/patches/base.patch

@@ -0,0 +1,15 @@
+--- x264_org/common/base.c	2024-08-30 14:07:49.183495538 +0200
++++ x264/common/base.c	2024-08-30 14:14:26.584633533 +0200
+@@ -37,6 +37,12 @@
+
+ #define X264_ISDIGIT(x) isdigit((unsigned char)(x))
+
++/* PHOENIX-RTOS patch: memalign is not supported by Phoenix-RTOS, use malloc as placeholder */
++void *memalign(size_t alignment, size_t size)
++{
++    return malloc(size);
++}
++
+ /****************************************************************************
+  * x264_reduce_fraction:
+  ****************************************************************************/

x264/patches/cpu.patch

@@ -0,0 +1,36 @@
+--- x264_org/common/cpu.c	2024-08-30 14:07:49.184495508 +0200
++++ x264/common/cpu.c	2024-08-30 14:12:25.631746608 +0200
+@@ -516,17 +516,22 @@
+     // Android NDK does not expose sched_getaffinity
+     return sysconf( _SC_NPROCESSORS_CONF );
+ #else
+-    cpu_set_t p_aff;
+-    memset( &p_aff, 0, sizeof(p_aff) );
+-    if( sched_getaffinity( 0, sizeof(p_aff), &p_aff ) )
+-        return 1;
+-#if HAVE_CPU_COUNT
+-    return CPU_COUNT(&p_aff);
+-#else
+-    int np = 0;
+-    for( size_t bit = 0; bit < 8 * sizeof(p_aff); bit++ )
+-        np += (((uint8_t *)&p_aff)[bit / 8] >> (bit % 8)) & 1;
+-    return np;
++    /* Phoenix-RTOS patch - no support for 'cpu_set_t' which is part of GNU extension */
++    /* Return 1 as available processor count */
++    return 1;
++#if 0
++        cpu_set_t p_aff;
++        memset( &p_aff, 0, sizeof(p_aff) );
++        if( sched_getaffinity( 0, sizeof(p_aff), &p_aff ) )
++            return 1;
++    #if HAVE_CPU_COUNT
++        return CPU_COUNT(&p_aff);
++    #else
++        int np = 0;
++        for( size_t bit = 0; bit < 8 * sizeof(p_aff); bit++ )
++            np += (((uint8_t *)&p_aff)[bit / 8] >> (bit % 8)) & 1;
++        return np;
++#endif
+ #endif
+ #endif
+