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Diffstat (limited to 'libavcodec/mips/dsputil_mmi.c')
-rw-r--r--libavcodec/mips/dsputil_mmi.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/libavcodec/mips/dsputil_mmi.c b/libavcodec/mips/dsputil_mmi.c
new file mode 100644
index 0000000000..20a435a065
--- /dev/null
+++ b/libavcodec/mips/dsputil_mmi.c
@@ -0,0 +1,162 @@
+/*
+ * MMI optimized DSP utils
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ *
+ * MMI optimization by Leon van Stuivenberg
+ * clear_blocks_mmi() by BroadQ
+ *
+ * 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 "libavcodec/dsputil.h"
+#include "mmi.h"
+
+static void clear_blocks_mmi(DCTELEM * blocks)
+{
+ __asm__ volatile(
+ ".set noreorder \n"
+ "addiu $9, %0, 768 \n"
+ "nop \n"
+ "1: \n"
+ "sq $0, 0(%0) \n"
+ "move $8, %0 \n"
+ "addi %0, %0, 64 \n"
+ "sq $0, 16($8) \n"
+ "slt $10, %0, $9 \n"
+ "sq $0, 32($8) \n"
+ "bnez $10, 1b \n"
+ "sq $0, 48($8) \n"
+ ".set reorder \n"
+ : "+r" (blocks) :: "$8", "$9", "memory" );
+}
+
+
+static void get_pixels_mmi(DCTELEM *block, const uint8_t *pixels, int line_size)
+{
+ __asm__ volatile(
+ ".set push \n\t"
+ ".set mips3 \n\t"
+ "ld $8, 0(%0) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $9, 0(%0) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $10, 0(%0) \n\t"
+ "pextlb $8, $0, $8 \n\t"
+ "sq $8, 0(%1) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $8, 0(%0) \n\t"
+ "pextlb $9, $0, $9 \n\t"
+ "sq $9, 16(%1) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $9, 0(%0) \n\t"
+ "pextlb $10, $0, $10 \n\t"
+ "sq $10, 32(%1) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $10, 0(%0) \n\t"
+ "pextlb $8, $0, $8 \n\t"
+ "sq $8, 48(%1) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $8, 0(%0) \n\t"
+ "pextlb $9, $0, $9 \n\t"
+ "sq $9, 64(%1) \n\t"
+ "add %0, %0, %2 \n\t"
+ "ld $9, 0(%0) \n\t"
+ "pextlb $10, $0, $10 \n\t"
+ "sq $10, 80(%1) \n\t"
+ "pextlb $8, $0, $8 \n\t"
+ "sq $8, 96(%1) \n\t"
+ "pextlb $9, $0, $9 \n\t"
+ "sq $9, 112(%1) \n\t"
+ ".set pop \n\t"
+ : "+r" (pixels) : "r" (block), "r" (line_size) : "$8", "$9", "$10", "memory" );
+}
+
+
+static void put_pixels8_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
+{
+ __asm__ volatile(
+ ".set push \n\t"
+ ".set mips3 \n\t"
+ "1: \n\t"
+ "ldr $8, 0(%1) \n\t"
+ "addiu %2, %2, -1 \n\t"
+ "ldl $8, 7(%1) \n\t"
+ "add %1, %1, %3 \n\t"
+ "sd $8, 0(%0) \n\t"
+ "add %0, %0, %3 \n\t"
+ "bgtz %2, 1b \n\t"
+ ".set pop \n\t"
+ : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
+ : "$8", "memory" );
+}
+
+
+static void put_pixels16_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
+{
+ __asm__ volatile (
+ ".set push \n\t"
+ ".set mips3 \n\t"
+ "1: \n\t"
+ "ldr $8, 0(%1) \n\t"
+ "add $11, %1, %3 \n\t"
+ "ldl $8, 7(%1) \n\t"
+ "add $10, %0, %3 \n\t"
+ "ldr $9, 8(%1) \n\t"
+ "ldl $9, 15(%1) \n\t"
+ "ldr $12, 0($11) \n\t"
+ "add %1, $11, %3 \n\t"
+ "ldl $12, 7($11) \n\t"
+ "pcpyld $8, $9, $8 \n\t"
+ "sq $8, 0(%0) \n\t"
+ "ldr $13, 8($11) \n\t"
+ "addiu %2, %2, -2 \n\t"
+ "ldl $13, 15($11) \n\t"
+ "add %0, $10, %3 \n\t"
+ "pcpyld $12, $13, $12 \n\t"
+ "sq $12, 0($10) \n\t"
+ "bgtz %2, 1b \n\t"
+ ".set pop \n\t"
+ : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
+ : "$8", "$9", "$10", "$11", "$12", "$13", "memory" );
+}
+
+
+void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx)
+{
+ const int idct_algo= avctx->idct_algo;
+ const int high_bit_depth = avctx->bits_per_raw_sample > 8;
+
+ if (!high_bit_depth) {
+ c->clear_blocks = clear_blocks_mmi;
+
+ c->put_pixels_tab[1][0] = put_pixels8_mmi;
+ c->put_no_rnd_pixels_tab[1][0] = put_pixels8_mmi;
+
+ c->put_pixels_tab[0][0] = put_pixels16_mmi;
+ c->put_no_rnd_pixels_tab[0][0] = put_pixels16_mmi;
+
+ c->get_pixels = get_pixels_mmi;
+ }
+
+ if (avctx->bits_per_raw_sample <= 8 &&
+ (idct_algo == FF_IDCT_AUTO || idct_algo == FF_IDCT_MMI)) {
+ c->idct_put= ff_mmi_idct_put;
+ c->idct_add= ff_mmi_idct_add;
+ c->idct = ff_mmi_idct;
+ c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
+ }
+}