avcodec: loongson optimized idctdsp with mmi

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

libavcodec/mips/Makefile

@@ -61,3 +61,4 @@ MMI-OBJS-$(CONFIG_H264DSP)                += mips/h264dsp_mmi.o
 MMI-OBJS-$(CONFIG_H264CHROMA)             += mips/h264chroma_mmi.o
 MMI-OBJS-$(CONFIG_H264PRED)               += mips/h264pred_mmi.o
 MMI-OBJS-$(CONFIG_MPEGVIDEO)              += mips/mpegvideo_mmi.o
+MMI-OBJS-$(CONFIG_IDCTDSP)                += mips/idctdsp_mmi.o

libavcodec/mips/idctdsp_init_mips.c

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2015 Manojkumar Bhosale (Manojkumar.Bhosale@imgtec.com)
+ *                    Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
  *
  * This file is part of FFmpeg.
  *
@@ -40,10 +41,33 @@ static av_cold void idctdsp_init_msa(IDCTDSPContext *c, AVCodecContext *avctx,
 }
 #endif  // #if HAVE_MSA
 
+#if HAVE_MMI
+static av_cold void idctdsp_init_mmi(IDCTDSPContext *c, AVCodecContext *avctx,
+                                     unsigned high_bit_depth)
+{
+    if ((avctx->lowres != 1) && (avctx->lowres != 2) && (avctx->lowres != 3) &&
+        (avctx->bits_per_raw_sample != 10) &&
+        (avctx->bits_per_raw_sample != 12) &&
+        (avctx->idct_algo == FF_IDCT_AUTO)) {
+                c->idct_put = ff_simple_idct_put_mmi;
+                c->idct_add = ff_simple_idct_add_mmi;
+                c->idct = ff_simple_idct_mmi;
+                c->perm_type = FF_IDCT_PERM_NONE;
+    }
+
+    c->put_pixels_clamped = ff_put_pixels_clamped_mmi;
+    c->add_pixels_clamped = ff_add_pixels_clamped_mmi;
+    c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_mmi;
+}
+#endif /* HAVE_MMI */
+
 void ff_idctdsp_init_mips(IDCTDSPContext *c, AVCodecContext *avctx,
                           unsigned high_bit_depth)
 {
 #if HAVE_MSA
     idctdsp_init_msa(c, avctx, high_bit_depth);
 #endif  // #if HAVE_MSA
+#if HAVE_MMI
+    idctdsp_init_mmi(c, avctx, high_bit_depth);
+#endif /* HAVE_MMI */
 }

libavcodec/mips/idctdsp_mips.h

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2015 Manojkumar Bhosale (Manojkumar.Bhosale@imgtec.com)
+ *                    Zhou Xiaoyong <zhouxiaoyong@loongson.cn>
  *
  * This file is part of FFmpeg.
  *
@@ -39,4 +40,14 @@ void ff_simple_idct_msa(int16_t *block);
 void ff_simple_idct_put_msa(uint8_t *dest, int32_t stride_dst, int16_t *block);
 void ff_simple_idct_add_msa(uint8_t *dest, int32_t stride_dst, int16_t *block);
 
+void ff_put_pixels_clamped_mmi(const int16_t *block,
+        uint8_t *av_restrict pixels, ptrdiff_t line_size);
+void ff_put_signed_pixels_clamped_mmi(const int16_t *block,
+        uint8_t *av_restrict pixels, ptrdiff_t line_size);
+void ff_add_pixels_clamped_mmi(const int16_t *block,
+        uint8_t *av_restrict pixels, ptrdiff_t line_size);
+void ff_simple_idct_mmi(int16_t *block);
+void ff_simple_idct_put_mmi(uint8_t *dest, int32_t line_size, int16_t *block);
+void ff_simple_idct_add_mmi(uint8_t *dest, int32_t line_size, int16_t *block);
+
 #endif  // #ifndef AVCODEC_MIPS_IDCTDSP_MIPS_H