avcodec: loongson optimize xvid idct with mmi

Signed-off-by: ZhouXiaoyong <zhouxiaoyong@loongson.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/mips/Makefile

@@ -34,6 +34,7 @@ OBJS-$(CONFIG_IDCTDSP)                    += mips/idctdsp_init_mips.o
 OBJS-$(CONFIG_MPEGVIDEO)                  += mips/mpegvideo_init_mips.o
 OBJS-$(CONFIG_MPEGVIDEOENC)               += mips/mpegvideoencdsp_init_mips.o
 OBJS-$(CONFIG_ME_CMP)                     += mips/me_cmp_init_mips.o
+OBJS-$(CONFIG_MPEG4_DECODER)              += mips/xvididct_init_mips.o
 MSA-OBJS-$(CONFIG_HEVC_DECODER)           += mips/hevcdsp_msa.o            \
                                              mips/hevc_mc_uni_msa.o        \
                                              mips/hevc_mc_uniw_msa.o       \
@@ -65,3 +66,4 @@ MMI-OBJS-$(CONFIG_H264PRED)               += mips/h264pred_mmi.o
 MMI-OBJS-$(CONFIG_MPEGVIDEO)              += mips/mpegvideo_mmi.o
 MMI-OBJS-$(CONFIG_IDCTDSP)                += mips/idctdsp_mmi.o           \
                                              mips/simple_idct_mmi.o
+MMI-OBJS-$(CONFIG_MPEG4_DECODER)          += mips/xvid_idct_mmi.o

libavcodec/mips/xvididct_init_mips.c

+/*
+ * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
+ *
+ * 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 "xvididct_mips.h"
+
+#if HAVE_MMI
+static av_cold void xvid_idct_init_mmi(IDCTDSPContext *c, AVCodecContext *avctx,
+        unsigned high_bit_depth)
+{
+    if (!high_bit_depth) {
+        if (avctx->idct_algo == FF_IDCT_AUTO ||
+                avctx->idct_algo == FF_IDCT_XVID) {
+            c->idct_put = ff_xvid_idct_put_mmi;
+            c->idct_add = ff_xvid_idct_add_mmi;
+            c->idct = ff_xvid_idct_mmi;
+            c->perm_type = FF_IDCT_PERM_NONE;
+        }
+    }
+}
+#endif /* HAVE_MMI */
+
+av_cold void ff_xvid_idct_init_mips(IDCTDSPContext *c, AVCodecContext *avctx,
+        unsigned high_bit_depth)
+{
+#if HAVE_MMI
+    xvid_idct_init_mmi(c, avctx, high_bit_depth);
+#endif /* HAVE_MMI */
+}

libavcodec/mips/xvididct_mips.h

+/*
+ * Copyright (c) 2015 Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_MIPS_XVIDIDCT_MIPS_H
+#define AVCODEC_MIPS_XVIDIDCT_MIPS_H
+
+#include "libavcodec/xvididct.h"
+
+void ff_xvid_idct_mmi(int16_t *block);
+void ff_xvid_idct_put_mmi(uint8_t *dest, int32_t line_size, int16_t *block);
+void ff_xvid_idct_add_mmi(uint8_t *dest, int32_t line_size, int16_t *block);
+
+#endif /* AVCODEC_MIPS_XVIDIDCT_MIPS_H */

libavcodec/xvididct.c

@@ -348,6 +348,8 @@ av_cold void ff_xvid_idct_init(IDCTDSPContext *c, AVCodecContext *avctx)
 
     if (ARCH_X86)
         ff_xvid_idct_init_x86(c, avctx, high_bit_depth);
+    if (ARCH_MIPS)
+        ff_xvid_idct_init_mips(c, avctx, high_bit_depth);
 
     ff_init_scantable_permutation(c->idct_permutation, c->perm_type);
 }

libavcodec/xvididct.h

@@ -30,5 +30,7 @@ void ff_xvid_idct_init(IDCTDSPContext *c, AVCodecContext *avctx);
 
 void ff_xvid_idct_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
                            unsigned high_bit_depth);
+void ff_xvid_idct_init_mips(IDCTDSPContext *c, AVCodecContext *avctx,
+                            unsigned high_bit_depth);
 
 #endif /* AVCODEC_XVIDIDCT_H */