Merge remote-tracking branch 'newdev/master'

* newdev/master:
  matroskadec: set default duration for simple block
  When building for MinGW32 disable strict ANSI compliancy.
  ARM: fix ff_apply_window_int16_neon() prototype
  configure: check for --as-needed support early
  ARM: NEON optimised apply_window_int16()
  ac3enc: NEON optimised shift functions
  ac3enc: NEON optimised ac3_max_msb_abs_int16 and ac3_exponent_min
  mpeg12.c: fix slice threading for mpeg2 field picture mode.
  ffmetadec.c: fix compiler warnings.
  configure: Don't explicitly disable ffplay or in/outdevices on dos
  configure: Remove the explicit disabling of ffserver
  configure: Add fork as a dependency to ffserver

Merged-by: Michael Niedermayer <michaelni@gmx.at>

8 files changed, 166 insertions, 1 deletions

diff --git a/libavcodec/ac3dsp.c b/libavcodec/ac3dsp.c
index 9bfa730..511a94f 100644
--- a/libavcodec/ac3dsp.c
+++ b/libavcodec/ac3dsp.c
@@ -109,6 +109,8 @@ av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
     c->ac3_rshift_int32 = ac3_rshift_int32_c;
     c->float_to_fixed24 = float_to_fixed24_c;
 
+    if (ARCH_ARM)
+        ff_ac3dsp_init_arm(c, bit_exact);
     if (HAVE_MMX)
         ff_ac3dsp_init_x86(c, bit_exact);
 }
diff --git a/libavcodec/ac3dsp.h b/libavcodec/ac3dsp.h
index 0a2dedf..66dc32b 100644
--- a/libavcodec/ac3dsp.h
+++ b/libavcodec/ac3dsp.h
@@ -84,6 +84,7 @@ typedef struct AC3DSPContext {
 } AC3DSPContext;
 
 void ff_ac3dsp_init    (AC3DSPContext *c, int bit_exact);
+void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact);
 void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact);
 
 #endif /* AVCODEC_AC3DSP_H */
diff --git a/libavcodec/arm/Makefile b/libavcodec/arm/Makefile
index d223703..08697da 100644
--- a/libavcodec/arm/Makefile
+++ b/libavcodec/arm/Makefile
@@ -1,3 +1,4 @@
+OBJS-$(CONFIG_AC3DSP)                  += arm/ac3dsp_init_arm.o
 OBJS-$(CONFIG_DCA_DECODER)             += arm/dcadsp_init_arm.o         \
 
 OBJS-$(CONFIG_VP5_DECODER)             += arm/vp56dsp_init_arm.o
@@ -46,6 +47,8 @@ NEON-OBJS-$(CONFIG_H264DSP)            += arm/h264dsp_neon.o            \
 
 NEON-OBJS-$(CONFIG_H264PRED)           += arm/h264pred_neon.o           \
 
+NEON-OBJS-$(CONFIG_AC3DSP)             += arm/ac3dsp_neon.o
+
 NEON-OBJS-$(CONFIG_DCA_DECODER)        += arm/dcadsp_neon.o             \
                                           arm/synth_filter_neon.o       \
 
diff --git a/libavcodec/arm/ac3dsp_init_arm.c b/libavcodec/arm/ac3dsp_init_arm.c
new file mode 100644
index 0000000..6874546
--- /dev/null
+++ b/libavcodec/arm/ac3dsp_init_arm.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2011 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/ac3dsp.h"
+#include "config.h"
+
+void ff_ac3_exponent_min_neon(uint8_t *exp, int num_reuse_blocks, int nb_coefs);
+int ff_ac3_max_msb_abs_int16_neon(const int16_t *src, int len);
+void ff_ac3_lshift_int16_neon(int16_t *src, unsigned len, unsigned shift);
+void ff_ac3_rshift_int32_neon(int32_t *src, unsigned len, unsigned shift);
+
+av_cold void ff_ac3dsp_init_arm(AC3DSPContext *c, int bit_exact)
+{
+    if (HAVE_NEON) {
+        c->ac3_exponent_min      = ff_ac3_exponent_min_neon;
+        c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_neon;
+        c->ac3_lshift_int16      = ff_ac3_lshift_int16_neon;
+        c->ac3_rshift_int32      = ff_ac3_rshift_int32_neon;
+    }
+}
diff --git a/libavcodec/arm/ac3dsp_neon.S b/libavcodec/arm/ac3dsp_neon.S
new file mode 100644
index 0000000..43d4e61
--- /dev/null
+++ b/libavcodec/arm/ac3dsp_neon.S
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2011 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 "asm.S"
+
+function ff_ac3_max_msb_abs_int16_neon, export=1
+        vmov.i16        q0,  #0
+        vmov.i16        q2,  #0
+1:      vld1.16         {q1},     [r0,:128]!
+        vabs.s16        q1,  q1
+        vld1.16         {q3},     [r0,:128]!
+        vabs.s16        q3,  q3
+        vorr            q0,  q0,  q1
+        vorr            q2,  q2,  q3
+        subs            r1,  r1,  #16
+        bgt             1b
+        vorr            q0,  q0,  q2
+        vorr            d0,  d0,  d1
+        vpmax.u16       d0,  d0,  d0
+        vpmax.u16       d0,  d0,  d0
+        vmov.u16        r0,  d0[0]
+        bx              lr
+endfunc
+
+function ff_ac3_exponent_min_neon, export=1
+        cmp             r1,  #0
+        bxeq            lr
+        push            {lr}
+        mov             r12, #256
+1:
+        vld1.8          {q0},     [r0,:128]
+        mov             lr,  r1
+        add             r3,  r0,  #256
+2:      vld1.8          {q1},     [r3,:128], r12
+        subs            lr,  lr,  #1
+        vmin.u8         q0,  q0,  q1
+        bgt             2b
+        subs            r2,  r2,  #16
+        vst1.8          {q0},     [r0,:128]!
+        bgt             1b
+        pop             {pc}
+endfunc
+
+function ff_ac3_lshift_int16_neon, export=1
+        vdup.16         q0,  r2
+1:      vld1.16         {q1},     [r0,:128]
+        vshl.s16        q1,  q1,  q0
+        vst1.16         {q1},     [r0,:128]!
+        subs            r1,  r1,  #8
+        bgt             1b
+        bx              lr
+endfunc
+
+function ff_ac3_rshift_int32_neon, export=1
+        rsb             r2,  r2,  #0
+        vdup.32         q0,  r2
+1:      vld1.32         {q1},     [r0,:128]
+        vshl.s32        q1,  q1,  q0
+        vst1.32         {q1},     [r0,:128]!
+        subs            r1,  r1,  #4
+        bgt             1b
+        bx              lr
+endfunc
diff --git a/libavcodec/arm/dsputil_init_neon.c b/libavcodec/arm/dsputil_init_neon.c
index 76ae632..ef5b63b 100644
--- a/libavcodec/arm/dsputil_init_neon.c
+++ b/libavcodec/arm/dsputil_init_neon.c
@@ -168,6 +168,9 @@ int32_t ff_scalarproduct_int16_neon(const int16_t *v1, const int16_t *v2, int le
 int32_t ff_scalarproduct_and_madd_int16_neon(int16_t *v1, const int16_t *v2,
                                              const int16_t *v3, int len, int mul);
 
+void ff_apply_window_int16_neon(int16_t *dst, const int16_t *src,
+                                const int16_t *window, unsigned n);
+
 void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
 {
     if (!avctx->lowres) {
@@ -319,4 +322,6 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
 
     c->scalarproduct_int16 = ff_scalarproduct_int16_neon;
     c->scalarproduct_and_madd_int16 = ff_scalarproduct_and_madd_int16_neon;
+
+    c->apply_window_int16 = ff_apply_window_int16_neon;
 }
diff --git a/libavcodec/arm/dsputil_neon.S b/libavcodec/arm/dsputil_neon.S
index 05a9115..0dbf5ca 100644
--- a/libavcodec/arm/dsputil_neon.S
+++ b/libavcodec/arm/dsputil_neon.S
@@ -789,3 +789,26 @@ NOVFP   ldr             r2,  [sp]
         vst1.f32        {q9},[r0,:128]!
         bx              lr
 endfunc
+
+function ff_apply_window_int16_neon, export=1
+        push            {r4,lr}
+        add             r4,  r1,  r3,  lsl #1
+        add             lr,  r0,  r3,  lsl #1
+        sub             r4,  r4,  #16
+        sub             lr,  lr,  #16
+        mov             r12, #-16
+1:
+        vld1.16         {q0},     [r1,:128]!
+        vld1.16         {q2},     [r2,:128]!
+        vld1.16         {q1},     [r4,:128], r12
+        vrev64.16       q3,  q2
+        vqrdmulh.s16    q0,  q0,  q2
+        vqrdmulh.s16    d2,  d2,  d7
+        vqrdmulh.s16    d3,  d3,  d6
+        vst1.16         {q0},     [r0,:128]!
+        vst1.16         {q1},     [lr,:128], r12
+        subs            r3,  r3,  #16
+        bgt             1b
+
+        pop             {r4,pc}
+endfunc
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 30a6aaa..5db24e8 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -1924,7 +1924,9 @@ static int slice_decode_thread(AVCodecContext *c, void *arg){
 
         start_code= -1;
         buf = ff_find_start_code(buf, s->gb.buffer_end, &start_code);
-        mb_y= start_code - SLICE_MIN_START_CODE;
+        mb_y= (start_code - SLICE_MIN_START_CODE) << field_pic;
+        if (s->picture_structure == PICT_BOTTOM_FIELD)
+            mb_y++;
         if(mb_y < 0 || mb_y >= s->end_mb_y)
             return -1;
     }
@@ -2342,6 +2344,16 @@ static int decode_chunks(AVCodecContext *avctx,
             break;
 
         case PICTURE_START_CODE:
+            if (avctx->thread_count > 1 && s->slice_count) {
+                int i;
+
+                avctx->execute(avctx, slice_decode_thread,
+                               s2->thread_context, NULL,
+                               s->slice_count, sizeof(void*));
+                for (i = 0; i < s->slice_count; i++)
+                    s2->error_count += s2->thread_context[i]->error_count;
+                s->slice_count = 0;
+            }
             if(last_code == 0 || last_code == SLICE_MIN_START_CODE){
             if(mpeg_decode_postinit(avctx) < 0){
                 av_log(avctx, AV_LOG_ERROR, "mpeg_decode_postinit() failure\n");