x86: Unconditionally compile blockdsp and svq1enc init files

This avoids a link failure with MMX disabled as the init functions
are referenced unconditionally.

1 files changed, 73 insertions, 0 deletions

diff --git a/libavcodec/x86/svq1enc.c b/libavcodec/x86/svq1enc.c
new file mode 100644
index 0000000000..02b0a84b8c
--- /dev/null
+++ b/libavcodec/x86/svq1enc.c
@@ -0,0 +1,73 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/x86/asm.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/svq1enc.h"
+
+#if HAVE_INLINE_ASM
+
+static int ssd_int8_vs_int16_mmx(const int8_t *pix1, const int16_t *pix2,
+                                 int size)
+{
+    int sum;
+    x86_reg i = size;
+
+    __asm__ volatile (
+        "pxor %%mm4, %%mm4 \n"
+        "1: \n"
+        "sub $8, %0 \n"
+        "movq (%2, %0), %%mm2 \n"
+        "movq (%3, %0, 2), %%mm0 \n"
+        "movq 8(%3, %0, 2), %%mm1 \n"
+        "punpckhbw %%mm2, %%mm3 \n"
+        "punpcklbw %%mm2, %%mm2 \n"
+        "psraw $8, %%mm3 \n"
+        "psraw $8, %%mm2 \n"
+        "psubw %%mm3, %%mm1 \n"
+        "psubw %%mm2, %%mm0 \n"
+        "pmaddwd %%mm1, %%mm1 \n"
+        "pmaddwd %%mm0, %%mm0 \n"
+        "paddd %%mm1, %%mm4 \n"
+        "paddd %%mm0, %%mm4 \n"
+        "jg 1b \n"
+        "movq %%mm4, %%mm3 \n"
+        "psrlq $32, %%mm3 \n"
+        "paddd %%mm3, %%mm4 \n"
+        "movd %%mm4, %1 \n"
+        : "+r" (i), "=r" (sum)
+        : "r" (pix1), "r" (pix2));
+
+    return sum;
+}
+
+#endif /* HAVE_INLINE_ASM */
+
+av_cold void ff_svq1enc_init_x86(SVQ1EncContext *c)
+{
+#if HAVE_INLINE_ASM
+    int cpu_flags = av_get_cpu_flags();
+
+    if (INLINE_MMX(cpu_flags)) {
+        c->ssd_int8_vs_int16 = ssd_int8_vs_int16_mmx;
+    }
+#endif /* HAVE_INLINE_ASM */
+}