Here is a patch taken from the MPlayer patchset for libmpeg2 that adds
ARM motion compensation. It supposedly runs well, but I am unable to
hook up the .S file properly in libmpeg2's auto* build system. I get
the following compilation failure:
/bin/bash ../libtool --mode=compile -c -o motion_comp_arm_s.lo
motion_comp_arm_s.S
libtool: unrecognized option `-c'
Try `libtool --help' for more information.
make[2]: *** [motion_comp_arm_s.lo] Error 1
I suppose this should not be hard to fix for a person familiar with
auto*, but it will have to be done by somebody else.
Diego
Index: libmpeg2/Makefile.am
===================================================================
--- libmpeg2/Makefile.am (revision 1162)
+++ libmpeg2/Makefile.am (working copy)
@@ -12,6 +12,7 @@
motion_comp_altivec.c idct_altivec.c \
motion_comp_alpha.c idct_alpha.c \
motion_comp_vis.c \
+ motion_comp_arm.c motion_comp_arm_s.S \
cpu_accel.c cpu_state.c
libmpeg2arch_la_CFLAGS = $(OPT_CFLAGS) $(ARCH_OPT_CFLAGS) $(LIBMPEG2_CFLAGS)
Index: include/mpeg2.h
===================================================================
--- include/mpeg2.h (revision 1162)
+++ include/mpeg2.h (working copy)
@@ -162,6 +162,7 @@
#define MPEG2_ACCEL_ALPHA_MVI 2
#define MPEG2_ACCEL_SPARC_VIS 1
#define MPEG2_ACCEL_SPARC_VIS2 2
+#define MPEG2_ACCEL_ARM 1
#define MPEG2_ACCEL_DETECT 0x80000000
uint32_t mpeg2_accel (uint32_t accel);
Index: libmpeg2/mpeg2_internal.h
===================================================================
--- libmpeg2/mpeg2_internal.h (revision 1162)
+++ libmpeg2/mpeg2_internal.h (working copy)
@@ -307,5 +307,6 @@
extern mpeg2_mc_t mpeg2_mc_altivec;
extern mpeg2_mc_t mpeg2_mc_alpha;
extern mpeg2_mc_t mpeg2_mc_vis;
+extern mpeg2_mc_t mpeg2_mc_arm;
#endif /* LIBMPEG2_MPEG2_INTERNAL_H */
Index: libmpeg2/motion_comp.c
===================================================================
--- libmpeg2/motion_comp.c (revision 1162)
+++ libmpeg2/motion_comp.c (working copy)
@@ -57,6 +57,11 @@
mpeg2_mc = mpeg2_mc_vis;
else
#endif
+#ifdef ARCH_ARM
+ if (accel & MPEG2_ACCEL_ARM) {
+ mpeg2_mc = mpeg2_mc_arm;
+ } else
+#endif
mpeg2_mc = mpeg2_mc_c;
}
Index: libmpeg2/motion_comp_arm.c
===================================================================
--- libmpeg2/motion_comp_arm.c (revision 0)
+++ libmpeg2/motion_comp_arm.c (revision 0)
@@ -0,0 +1,187 @@
+/*
+ * motion_comp_arm.c
+ * Copyright (C) 2004 AGAWA Koji <i (AT) atty (DOT) jp>
+ *
+ * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
+ * See http://libmpeg2.sourceforge.net/ for updates.
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpeg2dec 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with mpeg2dec; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "config.h"
+
+#ifdef ARCH_ARM
+
+#include <inttypes.h>
+
+#include "mpeg2.h"
+#include "attributes.h"
+#include "mpeg2_internal.h"
+
+#define avg2(a,b) ((a+b+1)>>1)
+#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
+
+#define predict_o(i) (ref[i])
+#define predict_x(i) (avg2 (ref[i], ref[i+1]))
+#define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
+#define predict_xy(i) (avg4 (ref[i], ref[i+1], \
+ (ref+stride)[i], (ref+stride)[i+1]))
+
+#define put(predictor,i) dest[i] = predictor (i)
+#define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
+
+/* mc function template */
+
+#define MC_FUNC(op,xy) \
+static void inline MC_##op##_##xy##_16_c (uint8_t * dest, const uint8_t * ref, \
+ const int stride, int height) \
+{ \
+ do { \
+ op (predict_##xy, 0); \
+ op (predict_##xy, 1); \
+ op (predict_##xy, 2); \
+ op (predict_##xy, 3); \
+ op (predict_##xy, 4); \
+ op (predict_##xy, 5); \
+ op (predict_##xy, 6); \
+ op (predict_##xy, 7); \
+ op (predict_##xy, 8); \
+ op (predict_##xy, 9); \
+ op (predict_##xy, 10); \
+ op (predict_##xy, 11); \
+ op (predict_##xy, 12); \
+ op (predict_##xy, 13); \
+ op (predict_##xy, 14); \
+ op (predict_##xy, 15); \
+ ref += stride; \
+ dest += stride; \
+ } while (--height); \
+} \
+static void MC_##op##_##xy##_8_c (uint8_t * dest, const uint8_t * ref, \
+ const int stride, int height) \
+{ \
+ do { \
+ op (predict_##xy, 0); \
+ op (predict_##xy, 1); \
+ op (predict_##xy, 2); \
+ op (predict_##xy, 3); \
+ op (predict_##xy, 4); \
+ op (predict_##xy, 5); \
+ op (predict_##xy, 6); \
+ op (predict_##xy, 7); \
+ ref += stride; \
+ dest += stride; \
+ } while (--height); \
+} \
+/* definitions of the actual mc functions */
+
+MC_FUNC (put,o)
+MC_FUNC (avg,o)
+MC_FUNC (put,x)
+MC_FUNC (avg,x)
+MC_FUNC (put,y)
+MC_FUNC (avg,y)
+MC_FUNC (put,xy)
+MC_FUNC (avg,xy)
+
+
+extern void MC_put_o_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height);
+
+extern void MC_put_x_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height);
+
+
+static void MC_put_y_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_put_y_16_c(dest, ref, stride, height);
+}
+
+static void MC_put_xy_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_put_xy_16_c(dest, ref, stride, height);
+}
+
+extern void MC_put_o_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height);
+
+extern void MC_put_x_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height);
+
+static void MC_put_y_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_put_y_8_c(dest, ref, stride, height);
+}
+
+static void MC_put_xy_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_put_xy_8_c(dest, ref, stride, height);
+}
+
+static void MC_avg_o_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_o_16_c(dest, ref, stride, height);
+}
+
+static void MC_avg_x_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_x_16_c(dest, ref, stride, height);
+}
+
+static void MC_avg_y_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_y_16_c(dest, ref, stride, height);
+}
+
+static void MC_avg_xy_16_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_xy_16_c(dest, ref, stride, height);
+}
+
+static void MC_avg_o_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_o_8_c(dest, ref, stride, height);
+}
+
+static void MC_avg_x_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_x_8_c(dest, ref, stride, height);
+}
+
+static void MC_avg_y_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_y_8_c(dest, ref, stride, height);
+}
+
+static void MC_avg_xy_8_arm (uint8_t * dest, const uint8_t * ref,
+ int stride, int height)
+{
+ MC_avg_xy_8_c(dest, ref, stride, height);
+}
+
+MPEG2_MC_EXTERN (arm)
+
+#endif
Index: libmpeg2/motion_comp_arm_s.S
===================================================================
--- libmpeg2/motion_comp_arm_s.S (revision 0)
+++ libmpeg2/motion_comp_arm_s.S (revision 0)
@@ -0,0 +1,322 @@
+@ motion_comp_arm_s.S
+@ Copyright (C) 2004 AGAWA Koji <i (AT) atty (DOT) jp>
+@
+@ This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
+@ See http://libmpeg2.sourceforge.net/ for updates.
+@
+@ mpeg2dec is free software; you can redistribute it and/or modify
+@ it under the terms of the GNU General Public License as published by
+@ the Free Software Foundation; either version 2 of the License, or
+@ (at your option) any later version.
+@
+@ mpeg2dec 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 General Public License for more details.
+@
+@ You should have received a copy of the GNU General Public License
+@ along with mpeg2dec; if not, write to the Free Software
+@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ .text
+
+@ ----------------------------------------------------------------
+ .align
+ .global MC_put_o_16_arm
+MC_put_o_16_arm:
+ @@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
+ pld [r1]
+ stmfd sp!, {r4-r11, lr} @ R14 is also called LR
+ and r4, r1, #3
+ adr r5, MC_put_o_16_arm_align_jt
+ add r5, r5, r4, lsl #2
+ ldr pc, [r5]
+
+MC_put_o_16_arm_align0:
+ ldmia r1, {r4-r7}
+ add r1, r1, r2
+ pld [r1]
+ stmia r0, {r4-r7}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne MC_put_o_16_arm_align0
+ ldmfd sp!, {r4-r11, pc} @@ update PC with LR content.
+
+.macro PROC shift
+ ldmia r1, {r4-r8}
+ add r1, r1, r2
+ mov r9, r4, lsr #(\shift)
+ pld [r1]
+ mov r10, r5, lsr #(\shift)
+ orr r9, r9, r5, lsl #(32-\shift)
+ mov r11, r6, lsr #(\shift)
+ orr r10, r10, r6, lsl #(32-\shift)
+ mov r12, r7, lsr #(\shift)
+ orr r11, r11, r7, lsl #(32-\shift)
+ orr r12, r12, r8, lsl #(32-\shift)
+ stmia r0, {r9-r12}
+ subs r3, r3, #1
+ add r0, r0, r2
+.endm
+
+MC_put_o_16_arm_align1:
+ and r1, r1, #0xFFFFFFFC
+1: PROC(8)
+ bne 1b
+ ldmfd sp!, {r4-r11, pc} @@ update PC with LR content.
+MC_put_o_16_arm_align2:
+ and r1, r1, #0xFFFFFFFC
+1: PROC(16)
+ bne 1b
+ ldmfd sp!, {r4-r11, pc} @@ update PC with LR content.
+MC_put_o_16_arm_align3:
+ and r1, r1, #0xFFFFFFFC
+1: PROC(24)
+ bne 1b
+ ldmfd sp!, {r4-r11, pc} @@ update PC with LR content.
+MC_put_o_16_arm_align_jt:
+ .word MC_put_o_16_arm_align0
+ .word MC_put_o_16_arm_align1
+ .word MC_put_o_16_arm_align2
+ .word MC_put_o_16_arm_align3
+
+@ ----------------------------------------------------------------
+ .align
+ .global MC_put_o_8_arm
+MC_put_o_8_arm:
+ @@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
+ pld [r1]
+ stmfd sp!, {r4-r10, lr} @ R14 is also called LR
+ and r4, r1, #3
+ adr r5, MC_put_o_8_arm_align_jt
+ add r5, r5, r4, lsl #2
+ ldr pc, [r5]
+MC_put_o_8_arm_align0:
+ ldmia r1, {r4-r5}
+ add r1, r1, r2
+ pld [r1]
+ stmia r0, {r4-r5}
+ add r0, r0, r2
+ subs r3, r3, #1
+ bne MC_put_o_8_arm_align0
+ ldmfd sp!, {r4-r10, pc} @@ update PC with LR content.
+
+.macro PROC8 shift
+ ldmia r1, {r4-r6}
+ add r1, r1, r2
+ mov r9, r4, lsr #(\shift)
+ pld [r1]
+ mov r10, r5, lsr #(\shift)
+ orr r9, r9, r5, lsl #(32-\shift)
+ orr r10, r10, r6, lsl #(32-\shift)
+ stmia r0, {r9-r10}
+ subs r3, r3, #1
+ add r0, r0, r2
+.endm
+
+MC_put_o_8_arm_align1:
+ and r1, r1, #0xFFFFFFFC
+1: PROC8(8)
+ bne 1b
+ ldmfd sp!, {r4-r10, pc} @@ update PC with LR content.
+
+MC_put_o_8_arm_align2:
+ and r1, r1, #0xFFFFFFFC
+1: PROC8(16)
+ bne 1b
+ ldmfd sp!, {r4-r10, pc} @@ update PC with LR content.
+
+MC_put_o_8_arm_align3:
+ and r1, r1, #0xFFFFFFFC
+1: PROC8(24)
+ bne 1b
+ ldmfd sp!, {r4-r10, pc} @@ update PC with LR content.
+
+MC_put_o_8_arm_align_jt:
+ .word MC_put_o_8_arm_align0
+ .word MC_put_o_8_arm_align1
+ .word MC_put_o_8_arm_align2
+ .word MC_put_o_8_arm_align3
+
+@ ----------------------------------------------------------------
+.macro AVG_PW rW1, rW2
+ mov \rW2, \rW2, lsl #24
+ orr \rW2, \rW2, \rW1, lsr #8
+ eor r9, \rW1, \rW2
+ and \rW2, \rW1, \rW2
+ and r10, r9, r12
+ add \rW2, \rW2, r10, lsr #1
+ and r10, r9, r11
+ add \rW2, \rW2, r10
+.endm
+
+ .align
+ .global MC_put_x_16_arm
+MC_put_x_16_arm:
+ @@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
+ pld [r1]
+ stmfd sp!, {r4-r11,lr} @ R14 is also called LR
+ and r4, r1, #3
+ adr r5, MC_put_x_16_arm_align_jt
+ ldr r11, [r5]
+ mvn r12, r11
+ add r5, r5, r4, lsl #2
+ ldr pc, [r5, #4]
+
+.macro ADJ_ALIGN_QW shift, R0, R1, R2, R3, R4
+ mov \R0, \R0, lsr #(\shift)
+ orr \R0, \R0, \R1, lsl #(32 - \shift)
+ mov \R1, \R1, lsr #(\shift)
+ orr \R1, \R1, \R2, lsl #(32 - \shift)
+ mov \R2, \R2, lsr #(\shift)
+ orr \R2, \R2, \R3, lsl #(32 - \shift)
+ mov \R3, \R3, lsr #(\shift)
+ orr \R3, \R3, \R4, lsl #(32 - \shift)
+ mov \R4, \R4, lsr #(\shift)
+@ and \R4, \R4, #0xFF
+.endm
+
+MC_put_x_16_arm_align0:
+ ldmia r1, {r4-r8}
+ add r1, r1, r2
+ pld [r1]
+ AVG_PW r7, r8
+ AVG_PW r6, r7
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r8}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne MC_put_x_16_arm_align0
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_16_arm_align1:
+ and r1, r1, #0xFFFFFFFC
+1: ldmia r1, {r4-r8}
+ add r1, r1, r2
+ pld [r1]
+ ADJ_ALIGN_QW 8, r4, r5, r6, r7, r8
+ AVG_PW r7, r8
+ AVG_PW r6, r7
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r8}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne 1b
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_16_arm_align2:
+ and r1, r1, #0xFFFFFFFC
+1: ldmia r1, {r4-r8}
+ add r1, r1, r2
+ pld [r1]
+ ADJ_ALIGN_QW 16, r4, r5, r6, r7, r8
+ AVG_PW r7, r8
+ AVG_PW r6, r7
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r8}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne 1b
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_16_arm_align3:
+ and r1, r1, #0xFFFFFFFC
+1: ldmia r1, {r4-r8}
+ add r1, r1, r2
+ pld [r1]
+ ADJ_ALIGN_QW 24, r4, r5, r6, r7, r8
+ AVG_PW r7, r8
+ AVG_PW r6, r7
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r8}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne 1b
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_16_arm_align_jt:
+ .word 0x01010101
+ .word MC_put_x_16_arm_align0
+ .word MC_put_x_16_arm_align1
+ .word MC_put_x_16_arm_align2
+ .word MC_put_x_16_arm_align3
+
+@ ----------------------------------------------------------------
+ .align
+ .global MC_put_x_8_arm
+MC_put_x_8_arm:
+ @@ void func(uint8_t * dest, const uint8_t * ref, int stride, int height)
+ pld [r1]
+ stmfd sp!, {r4-r11,lr} @ R14 is also called LR
+ and r4, r1, #3
+ adr r5, MC_put_x_8_arm_align_jt
+ ldr r11, [r5]
+ mvn r12, r11
+ add r5, r5, r4, lsl #2
+ ldr pc, [r5, #4]
+
+.macro ADJ_ALIGN_DW shift, R0, R1, R2
+ mov \R0, \R0, lsr #(\shift)
+ orr \R0, \R0, \R1, lsl #(32 - \shift)
+ mov \R1, \R1, lsr #(\shift)
+ orr \R1, \R1, \R2, lsl #(32 - \shift)
+ mov \R2, \R2, lsr #(\shift)
+@ and \R4, \R4, #0xFF
+.endm
+
+MC_put_x_8_arm_align0:
+ ldmia r1, {r4-r6}
+ add r1, r1, r2
+ pld [r1]
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r6}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne MC_put_x_8_arm_align0
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_8_arm_align1:
+ and r1, r1, #0xFFFFFFFC
+1: ldmia r1, {r4-r6}
+ add r1, r1, r2
+ pld [r1]
+ ADJ_ALIGN_DW 8, r4, r5, r6
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r6}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne 1b
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_8_arm_align2:
+ and r1, r1, #0xFFFFFFFC
+1: ldmia r1, {r4-r6}
+ add r1, r1, r2
+ pld [r1]
+ ADJ_ALIGN_DW 16, r4, r5, r6
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r6}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne 1b
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_8_arm_align3:
+ and r1, r1, #0xFFFFFFFC
+1: ldmia r1, {r4-r6}
+ add r1, r1, r2
+ pld [r1]
+ ADJ_ALIGN_DW 24, r4, r5, r6
+ AVG_PW r5, r6
+ AVG_PW r4, r5
+ stmia r0, {r5-r6}
+ subs r3, r3, #1
+ add r0, r0, r2
+ bne 1b
+ ldmfd sp!, {r4-r11,pc} @@ update PC with LR content.
+MC_put_x_8_arm_align_jt:
+ .word 0x01010101
+ .word MC_put_x_8_arm_align0
+ .word MC_put_x_8_arm_align1
+ .word MC_put_x_8_arm_align2
+ .word MC_put_x_8_arm_align3
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