adding ffmpeg specific version

1 files changed, 108 insertions, 0 deletions

diff --git a/ffmpeg1/libavcodec/sh4/dsputil_sh4.c b/ffmpeg1/libavcodec/sh4/dsputil_sh4.c
new file mode 100644
index 0000000..6e19fa0
--- /dev/null
+++ b/ffmpeg1/libavcodec/sh4/dsputil_sh4.c
@@ -0,0 +1,108 @@
+/*
+ *  sh4 dsputil
+ *
+ * Copyright (c) 2003 BERO <bero@geocities.co.jp>
+ *
+ * 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 "libavutil/attributes.h"
+#include "libavcodec/avcodec.h"
+#include "libavcodec/dsputil.h"
+#include "dsputil_sh4.h"
+#include "sh4.h"
+
+static void memzero_align8(void *dst,size_t size)
+{
+        int fpscr;
+        fp_single_enter(fpscr);
+        dst = (char *)dst + size;
+        size /= 32;
+        __asm__ volatile (
+        " fldi0 fr0\n"
+        " fldi0 fr1\n"
+        " fschg\n"  // double
+        "1: \n" \
+        " dt %1\n"
+        " fmov  dr0,@-%0\n"
+        " fmov  dr0,@-%0\n"
+        " fmov  dr0,@-%0\n"
+        " bf.s 1b\n"
+        " fmov  dr0,@-%0\n"
+        " fschg" //back to single
+        : "+r"(dst),"+r"(size) :: "memory" );
+        fp_single_leave(fpscr);
+}
+
+static void clear_blocks_sh4(int16_t *blocks)
+{
+        memzero_align8(blocks,sizeof(int16_t)*6*64);
+}
+
+static void idct_put(uint8_t *dest, int line_size, int16_t *block)
+{
+        int i;
+        uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+        ff_idct_sh4(block);
+        for(i=0;i<8;i++) {
+                dest[0] = cm[block[0]];
+                dest[1] = cm[block[1]];
+                dest[2] = cm[block[2]];
+                dest[3] = cm[block[3]];
+                dest[4] = cm[block[4]];
+                dest[5] = cm[block[5]];
+                dest[6] = cm[block[6]];
+                dest[7] = cm[block[7]];
+                dest+=line_size;
+                block+=8;
+        }
+}
+static void idct_add(uint8_t *dest, int line_size, int16_t *block)
+{
+        int i;
+        uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
+        ff_idct_sh4(block);
+        for(i=0;i<8;i++) {
+                dest[0] = cm[dest[0]+block[0]];
+                dest[1] = cm[dest[1]+block[1]];
+                dest[2] = cm[dest[2]+block[2]];
+                dest[3] = cm[dest[3]+block[3]];
+                dest[4] = cm[dest[4]+block[4]];
+                dest[5] = cm[dest[5]+block[5]];
+                dest[6] = cm[dest[6]+block[6]];
+                dest[7] = cm[dest[7]+block[7]];
+                dest+=line_size;
+                block+=8;
+        }
+}
+
+av_cold void ff_dsputil_init_sh4(DSPContext *c, AVCodecContext *avctx)
+{
+        const int idct_algo= avctx->idct_algo;
+        const int high_bit_depth = avctx->bits_per_raw_sample > 8;
+        ff_dsputil_init_align(c,avctx);
+
+        if (!high_bit_depth)
+        c->clear_blocks = clear_blocks_sh4;
+        if (avctx->bits_per_raw_sample <= 8 &&
+            (idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SH4)) {
+                c->idct_put = idct_put;
+                c->idct_add = idct_add;
+                c->idct     = ff_idct_sh4;
+                c->idct_permutation_type= FF_NO_IDCT_PERM;
+        }
+}