dsputil: Split off IDCT bits into their own context

13 files changed, 250 insertions, 128 deletions

diff --git a/libavcodec/arm/Makefile b/libavcodec/arm/Makefile
index eb92a8c953..3a3e244c4d 100644
--- a/libavcodec/arm/Makefile
+++ b/libavcodec/arm/Makefile
@@ -6,10 +6,7 @@ OBJS-$(CONFIG_AC3DSP)                  += arm/ac3dsp_init_arm.o         \
                                           arm/ac3dsp_arm.o
 OBJS-$(CONFIG_AUDIODSP)                += arm/audiodsp_init_arm.o
 OBJS-$(CONFIG_BLOCKDSP)                += arm/blockdsp_init_arm.o
-OBJS-$(CONFIG_DSPUTIL)                 += arm/dsputil_init_arm.o        \
-                                          arm/dsputil_arm.o             \
-                                          arm/jrevdct_arm.o             \
-                                          arm/simple_idct_arm.o
+OBJS-$(CONFIG_DSPUTIL)                 += arm/dsputil_init_arm.o
 OBJS-$(CONFIG_FFT)                     += arm/fft_init_arm.o            \
                                           arm/fft_fixed_init_arm.o
 OBJS-$(CONFIG_H264CHROMA)              += arm/h264chroma_init_arm.o
@@ -18,6 +15,10 @@ OBJS-$(CONFIG_H264PRED)                += arm/h264pred_init_arm.o
 OBJS-$(CONFIG_H264QPEL)                += arm/h264qpel_init_arm.o
 OBJS-$(CONFIG_HPELDSP)                 += arm/hpeldsp_init_arm.o        \
                                           arm/hpeldsp_arm.o
+OBJS-$(CONFIG_IDCTDSP)                 += arm/idctdsp_init_arm.o        \
+                                          arm/idctdsp_arm.o             \
+                                          arm/jrevdct_arm.o             \
+                                          arm/simple_idct_arm.o
 OBJS-$(CONFIG_MPEGAUDIODSP)            += arm/mpegaudiodsp_init_arm.o
 OBJS-$(CONFIG_MPEGVIDEO)               += arm/mpegvideo_arm.o
 OBJS-$(CONFIG_NEON_CLOBBER_TEST)       += arm/neontest.o
@@ -40,7 +41,7 @@ OBJS-$(CONFIG_RV30_DECODER)            += arm/rv34dsp_init_arm.o
 OBJS-$(CONFIG_RV40_DECODER)            += arm/rv34dsp_init_arm.o        \
                                           arm/rv40dsp_init_arm.o
 
-ARMV5TE-OBJS-$(CONFIG_DSPUTIL)         += arm/dsputil_init_armv5te.o    \
+ARMV5TE-OBJS-$(CONFIG_IDCTDSP)         += arm/idctdsp_init_armv5te.o    \
                                           arm/simple_idct_armv5te.o
 ARMV5TE-OBJS-$(CONFIG_MPEGVIDEO)       += arm/mpegvideo_armv5te.o       \
                                           arm/mpegvideo_armv5te_s.o
@@ -51,11 +52,13 @@ ARMV5TE-OBJS-$(CONFIG_MLP_DECODER)     += arm/mlpdsp_armv5te.o
 
 ARMV6-OBJS-$(CONFIG_AC3DSP)            += arm/ac3dsp_armv6.o
 ARMV6-OBJS-$(CONFIG_DSPUTIL)           += arm/dsputil_init_armv6.o      \
-                                          arm/dsputil_armv6.o           \
-                                          arm/simple_idct_armv6.o
+                                          arm/dsputil_armv6.o
 ARMV6-OBJS-$(CONFIG_H264DSP)           += arm/h264dsp_armv6.o
 ARMV6-OBJS-$(CONFIG_HPELDSP)           += arm/hpeldsp_init_armv6.o      \
                                           arm/hpeldsp_armv6.o
+ARMV6-OBJS-$(CONFIG_IDCTDSP)           += arm/idctdsp_init_armv6.o      \
+                                          arm/idctdsp_armv6.o           \
+                                          arm/simple_idct_armv6.o
 ARMV6-OBJS-$(CONFIG_MPEGAUDIODSP)      += arm/mpegaudiodsp_fixed_armv6.o
 
 ARMV6-OBJS-$(CONFIG_MLP_DECODER)       += arm/mlpdsp_armv6.o
@@ -83,9 +86,6 @@ NEON-OBJS-$(CONFIG_AUDIODSP)           += arm/audiodsp_init_neon.o      \
                                           arm/int_neon.o
 NEON-OBJS-$(CONFIG_BLOCKDSP)           += arm/blockdsp_init_neon.o      \
                                           arm/blockdsp_neon.o
-NEON-OBJS-$(CONFIG_DSPUTIL)            += arm/dsputil_init_neon.o       \
-                                          arm/dsputil_neon.o            \
-                                          arm/simple_idct_neon.o
 NEON-OBJS-$(CONFIG_FFT)                += arm/fft_neon.o                \
                                           arm/fft_fixed_neon.o
 NEON-OBJS-$(CONFIG_H264CHROMA)         += arm/h264cmc_neon.o
@@ -96,6 +96,9 @@ NEON-OBJS-$(CONFIG_H264QPEL)           += arm/h264qpel_neon.o           \
                                           arm/hpeldsp_neon.o
 NEON-OBJS-$(CONFIG_HPELDSP)            += arm/hpeldsp_init_neon.o       \
                                           arm/hpeldsp_neon.o
+NEON-OBJS-$(CONFIG_IDCTDSP)            += arm/idctdsp_init_neon.o       \
+                                          arm/idctdsp_neon.o            \
+                                          arm/simple_idct_neon.o
 NEON-OBJS-$(CONFIG_MDCT)               += arm/mdct_neon.o               \
                                           arm/mdct_fixed_neon.o
 NEON-OBJS-$(CONFIG_MPEGVIDEO)          += arm/mpegvideo_neon.o
diff --git a/libavcodec/arm/dsputil_arm.h b/libavcodec/arm/dsputil_arm.h
index 6080203960..5b976aa3d6 100644
--- a/libavcodec/arm/dsputil_arm.h
+++ b/libavcodec/arm/dsputil_arm.h
@@ -24,11 +24,7 @@
 #include "libavcodec/avcodec.h"
 #include "libavcodec/dsputil.h"
 
-void ff_dsputil_init_armv5te(DSPContext *c, AVCodecContext *avctx,
-                             unsigned high_bit_depth);
 void ff_dsputil_init_armv6(DSPContext *c, AVCodecContext *avctx,
                            unsigned high_bit_depth);
-void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx,
-                          unsigned high_bit_depth);
 
 #endif /* AVCODEC_ARM_DSPUTIL_ARM_H */
diff --git a/libavcodec/arm/dsputil_armv6.S b/libavcodec/arm/dsputil_armv6.S
index e667a47f94..b89171ff94 100644
--- a/libavcodec/arm/dsputil_armv6.S
+++ b/libavcodec/arm/dsputil_armv6.S
@@ -20,33 +20,6 @@
 
 #include "libavutil/arm/asm.S"
 
-function ff_add_pixels_clamped_armv6, export=1
-        push            {r4-r8,lr}
-        mov             r3,  #8
-1:
-        ldm             r0!, {r4,r5,r12,lr}
-        ldrd            r6,  r7,  [r1]
-        pkhbt           r8,  r4,  r5,  lsl #16
-        pkhtb           r5,  r5,  r4,  asr #16
-        pkhbt           r4,  r12, lr,  lsl #16
-        pkhtb           lr,  lr,  r12, asr #16
-        pld             [r1, r2]
-        uxtab16         r8,  r8,  r6
-        uxtab16         r5,  r5,  r6,  ror #8
-        uxtab16         r4,  r4,  r7
-        uxtab16         lr,  lr,  r7,  ror #8
-        usat16          r8,  #8,  r8
-        usat16          r5,  #8,  r5
-        usat16          r4,  #8,  r4
-        usat16          lr,  #8,  lr
-        orr             r6,  r8,  r5,  lsl #8
-        orr             r7,  r4,  lr,  lsl #8
-        subs            r3,  r3,  #1
-        strd_post       r6,  r7,  r1,  r2
-        bgt             1b
-        pop             {r4-r8,pc}
-endfunc
-
 function ff_get_pixels_armv6, export=1
         pld             [r1, r2]
         push            {r4-r8, lr}
diff --git a/libavcodec/arm/dsputil_init_arm.c b/libavcodec/arm/dsputil_init_arm.c
index 33109088ee..a8c806a47f 100644
--- a/libavcodec/arm/dsputil_init_arm.c
+++ b/libavcodec/arm/dsputil_init_arm.c
@@ -28,71 +28,11 @@
 #include "libavcodec/dsputil.h"
 #include "dsputil_arm.h"
 
-void ff_j_rev_dct_arm(int16_t *data);
-void ff_simple_idct_arm(int16_t *data);
-
-/* XXX: local hack */
-static void (*ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
-static void (*ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
-
-void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest,
-                               int line_size);
-
-/* XXX: those functions should be suppressed ASAP when all IDCTs are
- * converted */
-static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block)
-{
-    ff_j_rev_dct_arm(block);
-    ff_put_pixels_clamped(block, dest, line_size);
-}
-
-static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block)
-{
-    ff_j_rev_dct_arm(block);
-    ff_add_pixels_clamped(block, dest, line_size);
-}
-
-static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block)
-{
-    ff_simple_idct_arm(block);
-    ff_put_pixels_clamped(block, dest, line_size);
-}
-
-static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block)
-{
-    ff_simple_idct_arm(block);
-    ff_add_pixels_clamped(block, dest, line_size);
-}
-
 av_cold void ff_dsputil_init_arm(DSPContext *c, AVCodecContext *avctx,
                                  unsigned high_bit_depth)
 {
     int cpu_flags = av_get_cpu_flags();
 
-    ff_put_pixels_clamped = c->put_pixels_clamped;
-    ff_add_pixels_clamped = c->add_pixels_clamped;
-
-    if (!high_bit_depth) {
-        if (avctx->idct_algo == FF_IDCT_AUTO ||
-            avctx->idct_algo == FF_IDCT_ARM) {
-            c->idct_put              = j_rev_dct_arm_put;
-            c->idct_add              = j_rev_dct_arm_add;
-            c->idct                  = ff_j_rev_dct_arm;
-            c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM;
-        } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) {
-            c->idct_put              = simple_idct_arm_put;
-            c->idct_add              = simple_idct_arm_add;
-            c->idct                  = ff_simple_idct_arm;
-            c->idct_permutation_type = FF_NO_IDCT_PERM;
-        }
-    }
-
-    c->add_pixels_clamped = ff_add_pixels_clamped_arm;
-
-    if (have_armv5te(cpu_flags))
-        ff_dsputil_init_armv5te(c, avctx, high_bit_depth);
     if (have_armv6(cpu_flags))
         ff_dsputil_init_armv6(c, avctx, high_bit_depth);
-    if (have_neon(cpu_flags))
-        ff_dsputil_init_neon(c, avctx, high_bit_depth);
 }
diff --git a/libavcodec/arm/dsputil_init_armv6.c b/libavcodec/arm/dsputil_init_armv6.c
index 2b1002bfda..fab5e0d232 100644
--- a/libavcodec/arm/dsputil_init_armv6.c
+++ b/libavcodec/arm/dsputil_init_armv6.c
@@ -26,13 +26,6 @@
 #include "libavcodec/mpegvideo.h"
 #include "dsputil_arm.h"
 
-void ff_simple_idct_armv6(int16_t *data);
-void ff_simple_idct_put_armv6(uint8_t *dest, int line_size, int16_t *data);
-void ff_simple_idct_add_armv6(uint8_t *dest, int line_size, int16_t *data);
-
-void ff_add_pixels_clamped_armv6(const int16_t *block, uint8_t *pixels,
-                                 int line_size);
-
 void ff_get_pixels_armv6(int16_t *block, const uint8_t *pixels, int stride);
 void ff_diff_pixels_armv6(int16_t *block, const uint8_t *s1,
                           const uint8_t *s2, int stride);
@@ -56,17 +49,6 @@ int ff_pix_sum_armv6(uint8_t *pix, int line_size);
 av_cold void ff_dsputil_init_armv6(DSPContext *c, AVCodecContext *avctx,
                                    unsigned high_bit_depth)
 {
-    if (!high_bit_depth) {
-        if (avctx->idct_algo == FF_IDCT_AUTO ||
-            avctx->idct_algo == FF_IDCT_SIMPLEARMV6) {
-            c->idct_put              = ff_simple_idct_put_armv6;
-            c->idct_add              = ff_simple_idct_add_armv6;
-            c->idct                  = ff_simple_idct_armv6;
-            c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM;
-        }
-    }
-    c->add_pixels_clamped = ff_add_pixels_clamped_armv6;
-
     if (!high_bit_depth)
         c->get_pixels = ff_get_pixels_armv6;
     c->diff_pixels = ff_diff_pixels_armv6;
diff --git a/libavcodec/arm/dsputil_arm.S b/libavcodec/arm/idctdsp_arm.S
index 82fcf2ae91..34f467e86f 100644
--- a/libavcodec/arm/dsputil_arm.S
+++ b/libavcodec/arm/idctdsp_arm.S
@@ -1,5 +1,5 @@
 @
-@ ARMv4 optimized DSP utils
+@ ARMv4-optimized IDCT functions
 @ Copyright (c) 2004 AGAWA Koji <i (AT) atty (DOT) jp>
 @
 @ This file is part of Libav.
diff --git a/libavcodec/arm/idctdsp_arm.h b/libavcodec/arm/idctdsp_arm.h
new file mode 100644
index 0000000000..9012b82904
--- /dev/null
+++ b/libavcodec/arm/idctdsp_arm.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_ARM_IDCTDSP_ARM_H
+#define AVCODEC_ARM_IDCTDSP_ARM_H
+
+#include "libavcodec/avcodec.h"
+#include "libavcodec/idctdsp.h"
+
+void ff_idctdsp_init_armv5te(IDCTDSPContext *c, AVCodecContext *avctx,
+                             unsigned high_bit_depth);
+void ff_idctdsp_init_armv6(IDCTDSPContext *c, AVCodecContext *avctx,
+                           unsigned high_bit_depth);
+void ff_idctdsp_init_neon(IDCTDSPContext *c, AVCodecContext *avctx,
+                          unsigned high_bit_depth);
+
+#endif /* AVCODEC_ARM_IDCTDSP_ARM_H */
diff --git a/libavcodec/arm/idctdsp_armv6.S b/libavcodec/arm/idctdsp_armv6.S
new file mode 100644
index 0000000000..c180d732fa
--- /dev/null
+++ b/libavcodec/arm/idctdsp_armv6.S
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
+ *
+ * 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 "libavutil/arm/asm.S"
+
+function ff_add_pixels_clamped_armv6, export=1
+        push            {r4-r8,lr}
+        mov             r3,  #8
+1:
+        ldm             r0!, {r4,r5,r12,lr}
+        ldrd            r6,  r7,  [r1]
+        pkhbt           r8,  r4,  r5,  lsl #16
+        pkhtb           r5,  r5,  r4,  asr #16
+        pkhbt           r4,  r12, lr,  lsl #16
+        pkhtb           lr,  lr,  r12, asr #16
+        pld             [r1, r2]
+        uxtab16         r8,  r8,  r6
+        uxtab16         r5,  r5,  r6,  ror #8
+        uxtab16         r4,  r4,  r7
+        uxtab16         lr,  lr,  r7,  ror #8
+        usat16          r8,  #8,  r8
+        usat16          r5,  #8,  r5
+        usat16          r4,  #8,  r4
+        usat16          lr,  #8,  lr
+        orr             r6,  r8,  r5,  lsl #8
+        orr             r7,  r4,  lr,  lsl #8
+        subs            r3,  r3,  #1
+        strd_post       r6,  r7,  r1,  r2
+        bgt             1b
+        pop             {r4-r8,pc}
+endfunc
diff --git a/libavcodec/arm/idctdsp_init_arm.c b/libavcodec/arm/idctdsp_init_arm.c
new file mode 100644
index 0000000000..b4d189902d
--- /dev/null
+++ b/libavcodec/arm/idctdsp_init_arm.c
@@ -0,0 +1,98 @@
+/*
+ * ARM-optimized IDCT functions
+ * Copyright (c) 2001 Lionel Ulmer
+ *
+ * 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 <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/arm/cpu.h"
+#include "libavcodec/avcodec.h"
+#include "libavcodec/idctdsp.h"
+#include "idctdsp_arm.h"
+
+void ff_j_rev_dct_arm(int16_t *data);
+void ff_simple_idct_arm(int16_t *data);
+
+/* XXX: local hack */
+static void (*ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
+static void (*ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
+
+void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest,
+                               int line_size);
+
+/* XXX: those functions should be suppressed ASAP when all IDCTs are
+ * converted */
+static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block)
+{
+    ff_j_rev_dct_arm(block);
+    ff_put_pixels_clamped(block, dest, line_size);
+}
+
+static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block)
+{
+    ff_j_rev_dct_arm(block);
+    ff_add_pixels_clamped(block, dest, line_size);
+}
+
+static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block)
+{
+    ff_simple_idct_arm(block);
+    ff_put_pixels_clamped(block, dest, line_size);
+}
+
+static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block)
+{
+    ff_simple_idct_arm(block);
+    ff_add_pixels_clamped(block, dest, line_size);
+}
+
+av_cold void ff_idctdsp_init_arm(IDCTDSPContext *c, AVCodecContext *avctx,
+                                 unsigned high_bit_depth)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    ff_put_pixels_clamped = c->put_pixels_clamped;
+    ff_add_pixels_clamped = c->add_pixels_clamped;
+
+    if (!high_bit_depth) {
+        if (avctx->idct_algo == FF_IDCT_AUTO ||
+            avctx->idct_algo == FF_IDCT_ARM) {
+            c->idct_put              = j_rev_dct_arm_put;
+            c->idct_add              = j_rev_dct_arm_add;
+            c->idct                  = ff_j_rev_dct_arm;
+            c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM;
+        } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM) {
+            c->idct_put              = simple_idct_arm_put;
+            c->idct_add              = simple_idct_arm_add;
+            c->idct                  = ff_simple_idct_arm;
+            c->idct_permutation_type = FF_NO_IDCT_PERM;
+        }
+    }
+
+    c->add_pixels_clamped = ff_add_pixels_clamped_arm;
+
+    if (have_armv5te(cpu_flags))
+        ff_idctdsp_init_armv5te(c, avctx, high_bit_depth);
+    if (have_armv6(cpu_flags))
+        ff_idctdsp_init_armv6(c, avctx, high_bit_depth);
+    if (have_neon(cpu_flags))
+        ff_idctdsp_init_neon(c, avctx, high_bit_depth);
+}
diff --git a/libavcodec/arm/dsputil_init_armv5te.c b/libavcodec/arm/idctdsp_init_armv5te.c
index eb45b72088..e2492a5da7 100644
--- a/libavcodec/arm/dsputil_init_armv5te.c
+++ b/libavcodec/arm/idctdsp_init_armv5te.c
@@ -22,14 +22,14 @@
 
 #include "libavutil/attributes.h"
 #include "libavcodec/avcodec.h"
-#include "libavcodec/dsputil.h"
-#include "dsputil_arm.h"
+#include "libavcodec/idctdsp.h"
+#include "idctdsp_arm.h"
 
 void ff_simple_idct_armv5te(int16_t *data);
 void ff_simple_idct_put_armv5te(uint8_t *dest, int line_size, int16_t *data);
 void ff_simple_idct_add_armv5te(uint8_t *dest, int line_size, int16_t *data);
 
-av_cold void ff_dsputil_init_armv5te(DSPContext *c, AVCodecContext *avctx,
+av_cold void ff_idctdsp_init_armv5te(IDCTDSPContext *c, AVCodecContext *avctx,
                                      unsigned high_bit_depth)
 {
     if (!high_bit_depth &&
diff --git a/libavcodec/arm/idctdsp_init_armv6.c b/libavcodec/arm/idctdsp_init_armv6.c
new file mode 100644
index 0000000000..e92f471220
--- /dev/null
+++ b/libavcodec/arm/idctdsp_init_armv6.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
+ *
+ * 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 <stdint.h>
+
+#include "libavutil/attributes.h"
+#include "libavcodec/avcodec.h"
+#include "libavcodec/idctdsp.h"
+#include "idctdsp_arm.h"
+
+void ff_simple_idct_armv6(int16_t *data);
+void ff_simple_idct_put_armv6(uint8_t *dest, int line_size, int16_t *data);
+void ff_simple_idct_add_armv6(uint8_t *dest, int line_size, int16_t *data);
+
+void ff_add_pixels_clamped_armv6(const int16_t *block, uint8_t *pixels,
+                                 int line_size);
+
+av_cold void ff_idctdsp_init_armv6(IDCTDSPContext *c, AVCodecContext *avctx,
+                                   unsigned high_bit_depth)
+{
+    if (!high_bit_depth) {
+        if (avctx->idct_algo == FF_IDCT_AUTO ||
+            avctx->idct_algo == FF_IDCT_SIMPLEARMV6) {
+            c->idct_put              = ff_simple_idct_put_armv6;
+            c->idct_add              = ff_simple_idct_add_armv6;
+            c->idct                  = ff_simple_idct_armv6;
+            c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM;
+        }
+    }
+    c->add_pixels_clamped = ff_add_pixels_clamped_armv6;
+}
diff --git a/libavcodec/arm/dsputil_init_neon.c b/libavcodec/arm/idctdsp_init_neon.c
index 9d4c76ce58..17905973fb 100644
--- a/libavcodec/arm/dsputil_init_neon.c
+++ b/libavcodec/arm/idctdsp_init_neon.c
@@ -1,5 +1,5 @@
 /*
- * ARM NEON optimised DSP functions
+ * ARM-NEON-optimized IDCT functions
  * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
  *
  * This file is part of Libav.
@@ -23,8 +23,8 @@
 
 #include "libavutil/attributes.h"
 #include "libavcodec/avcodec.h"
-#include "libavcodec/dsputil.h"
-#include "dsputil_arm.h"
+#include "libavcodec/idctdsp.h"
+#include "idctdsp_arm.h"
 
 void ff_simple_idct_neon(int16_t *data);
 void ff_simple_idct_put_neon(uint8_t *dest, int line_size, int16_t *data);
@@ -34,7 +34,7 @@ void ff_add_pixels_clamped_neon(const int16_t *, uint8_t *, int);
 void ff_put_pixels_clamped_neon(const int16_t *, uint8_t *, int);
 void ff_put_signed_pixels_clamped_neon(const int16_t *, uint8_t *, int);
 
-av_cold void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx,
+av_cold void ff_idctdsp_init_neon(IDCTDSPContext *c, AVCodecContext *avctx,
                                   unsigned high_bit_depth)
 {
     if (!high_bit_depth) {
diff --git a/libavcodec/arm/dsputil_neon.S b/libavcodec/arm/idctdsp_neon.S
index ed6f218380..7095879bae 100644
--- a/libavcodec/arm/dsputil_neon.S
+++ b/libavcodec/arm/idctdsp_neon.S
@@ -1,5 +1,5 @@
 /*
- * ARM NEON optimised DSP functions
+ * ARM-NEON-optimized IDCT functions
  * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
  *
  * This file is part of Libav.