Merge remote-tracking branch 'qatar/master'

* qatar/master:
  MS Screen 1 decoder
  aacdec: Fix popping channel layouts.
  av_gettime: support Win32 without gettimeofday()
  Use av_gettime() in various places
  Move av_gettime() to libavutil
  dct-test: use emms_c() from libavutil instead of duplicating it
  mov: fix operator precedence bug
  mathematics.h: remove a couple of math defines
  Remove unnecessary inclusions of [sys/]time.h
  lavf: remove unnecessary inclusions of unistd.h
  bfin: libswscale: add const where appropriate to fix warnings
  bfin: libswscale: remove unnecessary #includes
  udp: Properly check for invalid sockets
  tcp: Check the return value from getsockopt
  network: Use av_strerror for getting error messages
  udp: Properly print error from getnameinfo
  mmst: Use AVUNERROR() to convert error codes to the right range for strerror
  network: Pass pointers of the right type to get/setsockopt/ioctlsocket on windows
  rtmp: Reduce the number of idle posts sent by sleeping 50ms

Conflicts:
	Changelog
	configure
	libavcodec/aacdec.c
	libavcodec/allcodecs.c
	libavcodec/avcodec.h
	libavcodec/dct-test.c
	libavcodec/version.h
	libavformat/riff.c
	libavformat/udp.c
	libavutil/Makefile
	libswscale/bfin/yuv2rgb_bfin.c

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

43 files changed, 1039 insertions, 158 deletions

diff --git a/Changelog b/Changelog
index 93e350b..63260ae 100644
--- a/Changelog
+++ b/Changelog
@@ -11,6 +11,7 @@ version next:
 - ffprobe -show_data option
 - RTMPT protocol support
 - iLBC encoding/decoding via libilbc
+- Microsoft Screen 1 decoder
 - showwaves filter
 
 
diff --git a/configure b/configure
index bf6a1f9..18a86f3 100755
--- a/configure
+++ b/configure
@@ -1206,7 +1206,9 @@ HAVE_LIST="
     GetProcessAffinityMask
     GetProcessMemoryInfo
     GetProcessTimes
+    GetSystemTimeAsFileTime
     getrusage
+    gettimeofday
     glob
     gnu_as
     ibm_asm
@@ -3142,6 +3144,7 @@ check_func  getaddrinfo $network_extralibs
 check_func  gethrtime
 check_func  getrusage
 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
+check_func  gettimeofday
 check_func  inet_aton $network_extralibs
 check_func  isatty
 check_func  localtime_r
@@ -3163,6 +3166,7 @@ check_func_headers lzo/lzo1x.h lzo1x_999_compress
 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
 check_func_headers windows.h GetProcessAffinityMask
 check_func_headers windows.h GetProcessTimes
+check_func_headers windows.h GetSystemTimeAsFileTime
 check_func_headers windows.h MapViewOfFile
 check_func_headers windows.h VirtualAlloc
 check_func_headers glob.h glob
diff --git a/doc/general.texi b/doc/general.texi
index 6981399..486f8b3 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -562,6 +562,8 @@ following image formats are supported:
 @item LOCO                   @tab     @tab  X
 @item lossless MJPEG         @tab  X  @tab  X
 @item Microsoft RLE          @tab     @tab  X
+@item Microsoft Screen 1     @tab     @tab  X
+    @tab Also known as Windows Media Video V7 Screen.
 @item Microsoft Video 1      @tab     @tab  X
 @item Mimic                  @tab     @tab  X
     @tab Used in MSN Messenger Webcam streams.
diff --git a/ffmpeg.c b/ffmpeg.c
index 17fe6e5..428b18f 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -63,7 +63,6 @@
 
 #if HAVE_SYS_RESOURCE_H
 #include <sys/types.h>
-#include <sys/time.h>
 #include <sys/resource.h>
 #elif HAVE_GETPROCESSTIMES
 #include <windows.h>
diff --git a/ffserver.c b/ffserver.c
index a0efa54..5f8272b 100644
--- a/ffserver.c
+++ b/ffserver.c
@@ -55,7 +55,6 @@
 #include <poll.h>
 #endif
 #include <errno.h>
-#include <sys/time.h>
 #include <time.h>
 #include <sys/wait.h>
 #include <signal.h>
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 1eeba3a..6c412ef 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -327,6 +327,7 @@ OBJS-$(CONFIG_MSMPEG4V3_ENCODER)       += msmpeg4.o msmpeg4enc.o msmpeg4data.o \
                                           h263dec.o h263.o ituh263dec.o        \
                                           mpeg4videodec.o
 OBJS-$(CONFIG_MSRLE_DECODER)           += msrle.o msrledec.o
+OBJS-$(CONFIG_MSS1_DECODER)            += mss1.o
 OBJS-$(CONFIG_MSVIDEO1_DECODER)        += msvideo1.o
 OBJS-$(CONFIG_MSVIDEO1_ENCODER)        += msvideo1enc.o elbg.o
 OBJS-$(CONFIG_MSZH_DECODER)            += lcldec.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index e4af0d8..9f5129f 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -170,6 +170,7 @@ void avcodec_register_all(void)
     REGISTER_ENCDEC  (MSMPEG4V2, msmpeg4v2);
     REGISTER_ENCDEC  (MSMPEG4V3, msmpeg4v3);
     REGISTER_DECODER (MSRLE, msrle);
+    REGISTER_DECODER (MSS1, mss1);
     REGISTER_ENCDEC  (MSVIDEO1, msvideo1);
     REGISTER_DECODER (MSZH, mszh);
     REGISTER_DECODER (MXPEG, mxpeg);
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index b3c2991..3e92656 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -257,6 +257,7 @@ enum CodecID {
     CODEC_ID_CDXL,
     CODEC_ID_XBM,
     CODEC_ID_ZEROCODEC,
+    CODEC_ID_MSS1,
     CODEC_ID_Y41P       = MKBETAG('Y','4','1','P'),
     CODEC_ID_ESCAPE130  = MKBETAG('E','1','3','0'),
     CODEC_ID_EXR        = MKBETAG('0','E','X','R'),
diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c
index 45d21bf..9ea8f09 100644
--- a/libavcodec/dct-test.c
+++ b/libavcodec/dct-test.c
@@ -28,13 +28,13 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include <sys/time.h>
 #include <unistd.h>
 #include <math.h>
 
 #include "libavutil/cpu.h"
 #include "libavutil/common.h"
 #include "libavutil/lfg.h"
+#include "libavutil/time.h"
 
 #include "simple_idct.h"
 #include "aandcttab.h"
@@ -163,13 +163,6 @@ static const struct algo idct_tab[] = {
 
 #define AANSCALE_BITS 12
 
-static int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 #define NB_ITS 20000
 #define NB_ITS_SPEED 50000
 
@@ -201,14 +194,6 @@ static void idct_mmx_init(void)
 DECLARE_ALIGNED(16, static DCTELEM, block)[64];
 DECLARE_ALIGNED(8,  static DCTELEM, block1)[64];
 
-static inline void mmx_emms(void)
-{
-#if HAVE_MMX
-    if (cpu_flags & AV_CPU_FLAG_MMX)
-        __asm__ volatile ("emms\n\t" ::: "memory");
-#endif
-}
-
 static void init_block(DCTELEM block[64], int test, int is_idct, AVLFG *prng, int vals)
 {
     int i, j;
@@ -287,7 +272,7 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed, c
         permute(block, block1, dct->format);
 
         dct->func(block);
-        mmx_emms();
+        emms_c();
 
         if (dct->format == SCALE_PERM) {
             for (i = 0; i < 64; i++) {
@@ -345,16 +330,16 @@ static int dct_error(const struct algo *dct, int test, int is_idct, int speed, c
     init_block(block, test, is_idct, &prng, vals);
     permute(block1, block, dct->format);
 
-    ti = gettime();
+    ti = av_gettime();
     it1 = 0;
     do {
         for (it = 0; it < NB_ITS_SPEED; it++) {
             memcpy(block, block1, sizeof(block));
             dct->func(block);
         }
-        mmx_emms();
+        emms_c();
         it1 += NB_ITS_SPEED;
-        ti1 = gettime() - ti;
+        ti1 = av_gettime() - ti;
     } while (ti1 < 1000000);
 
     printf("%s %s: %0.1f kdct/s\n", is_idct ? "IDCT" : "DCT", dct->name,
@@ -505,7 +490,7 @@ static void idct248_error(const char *name,
     if (!speed)
         return;
 
-    ti = gettime();
+    ti = av_gettime();
     it1 = 0;
     do {
         for (it = 0; it < NB_ITS_SPEED; it++) {
@@ -513,9 +498,9 @@ static void idct248_error(const char *name,
                 block[i] = block1[i];
             idct248_put(img_dest, 8, block);
         }
-        mmx_emms();
+        emms_c();
         it1 += NB_ITS_SPEED;
-        ti1 = gettime() - ti;
+        ti1 = av_gettime() - ti;
     } while (ti1 < 1000000);
 
     printf("%s %s: %0.1f kdct/s\n", 1 ? "IDCT248" : "DCT248", name,
diff --git a/libavcodec/fft-test.c b/libavcodec/fft-test.c
index d2bd0cf..a385076 100644
--- a/libavcodec/fft-test.c
+++ b/libavcodec/fft-test.c
@@ -27,6 +27,7 @@
 #include "libavutil/mathematics.h"
 #include "libavutil/lfg.h"
 #include "libavutil/log.h"
+#include "libavutil/time.h"
 #include "fft.h"
 #if CONFIG_FFT_FLOAT
 #include "dct.h"
@@ -34,7 +35,6 @@
 #endif
 #include <math.h>
 #include <unistd.h>
-#include <sys/time.h>
 #include <stdlib.h>
 #include <string.h>
 
@@ -186,13 +186,6 @@ static FFTSample frandom(AVLFG *prng)
     return (int16_t)av_lfg_get(prng) / 32768.0 * RANGE;
 }
 
-static int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 static int check_diff(FFTSample *tab1, FFTSample *tab2, int n, double scale)
 {
     int i;
@@ -430,7 +423,7 @@ int main(int argc, char **argv)
         /* we measure during about 1 seconds */
         nb_its = 1;
         for(;;) {
-            time_start = gettime();
+            time_start = av_gettime();
             for (it = 0; it < nb_its; it++) {
                 switch (transform) {
                 case TRANSFORM_MDCT:
@@ -456,7 +449,7 @@ int main(int argc, char **argv)
 #endif
                 }
             }
-            duration = gettime() - time_start;
+            duration = av_gettime() - time_start;
             if (duration >= 1000000)
                 break;
             nb_its *= 2;
diff --git a/libavcodec/motion-test.c b/libavcodec/motion-test.c
index f230094..f55ac21 100644
--- a/libavcodec/motion-test.c
+++ b/libavcodec/motion-test.c
@@ -32,6 +32,7 @@
 #include "config.h"
 #include "dsputil.h"
 #include "libavutil/lfg.h"
+#include "libavutil/time.h"
 
 #undef printf
 
@@ -58,13 +59,6 @@ static void help(void)
            "test motion implementations\n");
 }
 
-static int64_t gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 #define NB_ITS 500
 
 int dummy;
@@ -97,7 +91,7 @@ static void test_motion(const char *name,
     emms_c();
 
     /* speed test */
-    ti = gettime();
+    ti = av_gettime();
     d1 = 0;
     for(it=0;it<NB_ITS;it++) {
         for(y=0;y<HEIGHT-17;y++) {
@@ -109,7 +103,7 @@ static void test_motion(const char *name,
     }
     emms_c();
     dummy = d1; /* avoid optimization */
-    ti = gettime() - ti;
+    ti = av_gettime() - ti;
 
     printf("  %0.0f kop/s\n",
            (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
diff --git a/libavcodec/mss1.c b/libavcodec/mss1.c
new file mode 100644
index 0000000..347990d
--- a/dev/null
+++ b/libavcodec/mss1.c
@@ -0,0 +1,845 @@
+/*
+ * Microsoft Screen 1 (aka Windows Media Video V7 Screen) decoder
+ * Copyright (c) 2012 Konstantin Shishkov
+ *
+ * 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
+ */
+
+/**
+ * @file
+ * Microsoft Screen 1 (aka Windows Media Video V7 Screen) decoder
+ */
+
+#include "libavutil/intfloat.h"
+#include "libavutil/intreadwrite.h"
+#include "avcodec.h"
+#include "get_bits.h"
+
+enum SplitMode {
+    SPLIT_VERT = 0,
+    SPLIT_HOR,
+    SPLIT_NONE
+};
+
+typedef struct ArithCoder {
+    int low, high, value;
+    GetBitContext *gb;
+} ArithCoder;
+
+#define MODEL_MIN_SYMS    2
+#define MODEL_MAX_SYMS  256
+#define THRESH_ADAPTIVE  -1
+#define THRESH_LOW       15
+#define THRESH_HIGH      50
+
+typedef struct Model {
+    int cum_prob[MODEL_MAX_SYMS + 1];
+    int weights[MODEL_MAX_SYMS + 1];
+    int idx2sym[MODEL_MAX_SYMS + 1];
+    int sym2idx[MODEL_MAX_SYMS + 1];
+    int num_syms;
+    int thr_weight, threshold;
+} Model;
+
+static const int sec_order_sizes[4] = { 1, 7, 6, 1 };
+
+enum ContextDirection {
+    TOP_LEFT = 0,
+    TOP,
+    TOP_RIGHT,
+    LEFT
+};
+
+typedef struct PixContext {
+    int cache_size, num_syms;
+    uint8_t cache[12];
+    Model cache_model, full_model;
+    Model sec_models[4][8][4];
+} PixContext;
+
+typedef struct MSS1Context {
+    AVCodecContext *avctx;
+    AVFrame        pic;
+    uint8_t        *pic_start;
+    int            pic_stride;
+    uint8_t        *mask;
+    int            mask_linesize;
+    uint32_t       pal[256];
+    int            free_colours;
+    Model          intra_region, inter_region;
+    Model          pivot, edge_mode, split_mode;
+    PixContext     intra_pix_ctx, inter_pix_ctx;
+    int            corrupted;
+} MSS1Context;
+
+static void arith_init(ArithCoder *c, GetBitContext *gb)
+{
+    c->low   = 0;
+    c->high  = 0xFFFF;
+    c->value = get_bits(gb, 16);
+    c->gb    = gb;
+}
+
+static void arith_normalise(ArithCoder *c)
+{
+    for (;;) {
+        if (c->high >= 0x8000) {
+            if (c->low < 0x8000) {
+                if (c->low >= 0x4000 && c->high < 0xC000) {
+                    c->value -= 0x4000;
+                    c->low   -= 0x4000;
+                    c->high  -= 0x4000;
+                } else {
+                    return;
+                }
+            } else {
+                c->value -= 0x8000;
+                c->low   -= 0x8000;
+                c->high  -= 0x8000;
+            }
+        }
+        c->value <<= 1;
+        c->low   <<= 1;
+        c->high  <<= 1;
+        c->high   |= 1;
+        c->value  |= get_bits1(c->gb);
+    }
+}
+
+static int arith_get_bit(ArithCoder *c)
+{
+    int range = c->high - c->low + 1;
+    int bit   = (((c->value - c->low) << 1) + 1) / range;
+
+    if (bit)
+        c->low += range >> 1;
+    else
+        c->high = c->low + (range >> 1) - 1;
+
+    arith_normalise(c);
+
+    return bit;
+}
+
+static int arith_get_bits(ArithCoder *c, int bits)
+{
+    int range = c->high - c->low + 1;
+    int val   = (((c->value - c->low + 1) << bits) - 1) / range;
+    int prob  = range * val;
+
+    c->high   = ((prob + range) >> bits) + c->low - 1;
+    c->low   += prob >> bits;
+
+    arith_normalise(c);
+
+    return val;
+}
+
+static int arith_get_number(ArithCoder *c, int mod_val)
+{
+    int range = c->high - c->low + 1;
+    int val   = ((c->value - c->low + 1) * mod_val - 1) / range;
+    int prob  = range * val;
+
+    c->high   = (prob + range) / mod_val + c->low - 1;
+    c->low   += prob / mod_val;
+
+    arith_normalise(c);
+
+    return val;
+}
+
+static int arith_get_prob(ArithCoder *c, int *probs)
+{
+    int range = c->high - c->low + 1;
+    int val   = ((c->value - c->low + 1) * probs[0] - 1) / range;
+    int sym   = 1;
+
+    while (probs[sym] > val)
+        sym++;
+
+    c->high = range * probs[sym - 1] / probs[0] + c->low - 1;
+    c->low += range * probs[sym]     / probs[0];
+
+    return sym;
+}
+
+static int model_calc_threshold(Model *m)
+{
+    int thr;
+
+    if (m->thr_weight == -1) {
+        thr = 2 * m->weights[m->num_syms] - 1;
+        thr = ((thr >> 1) + 4 * m->cum_prob[0]) / thr;
+    } else {
+        thr = m->num_syms * m->thr_weight;
+    }
+
+    return FFMIN(thr, 0x3FFF);
+}
+
+static void model_reset(Model *m)
+{
+    int i;
+
+    for (i = 0; i <= m->num_syms; i++) {
+        m->weights[i]  = 1;
+        m->cum_prob[i] = m->num_syms - i;
+    }
+    m->weights[0]           = -1;
+    m->idx2sym[0]           = -1;
+    m->sym2idx[m->num_syms] = -1;
+    for (i = 0; i < m->num_syms; i++) {
+        m->sym2idx[i]     = i + 1;
+        m->idx2sym[i + 1] = i;
+    }
+}
+
+static av_cold void model_init(Model *m, int num_syms, int thr_weight)
+{
+    m->num_syms   = num_syms;
+    m->thr_weight = thr_weight;
+    m->threshold  = model_calc_threshold(m);
+    model_reset(m);
+}
+
+static void model_rescale_weights(Model *m)
+{
+    int i;
+    int cum_prob;
+
+    if (m->thr_weight == -1)
+        m->threshold = model_calc_threshold(m);
+    while (m->cum_prob[0] > m->threshold) {
+        cum_prob = 0;
+        for (i = m->num_syms; i >= 0; i--) {
+            m->cum_prob[i] = cum_prob;
+            m->weights[i]  = (m->weights[i] + 1) >> 1;
+            cum_prob      += m->weights[i];
+        }
+    }
+}
+
+static void model_update(Model *m, int val)
+{
+    int i;
+
+    if (m->weights[val] == m->weights[val - 1]) {
+        for (i = val; m->weights[i - 1] == m->weights[val]; i--);
+        if (i != val) {
+            int sym1, sym2;
+
+            sym1 = m->idx2sym[val];
+            sym2 = m->idx2sym[i];
+
+            m->idx2sym[val]  = sym2;
+            m->idx2sym[i]    = sym1;
+            m->sym2idx[sym1] = i;
+            m->sym2idx[sym2] = val;
+
+            val = i;
+        }
+    }
+    m->weights[val]++;
+    for (i = val - 1; i >= 0; i--)
+        m->cum_prob[i]++;
+    model_rescale_weights(m);
+}
+
+static int arith_get_model_sym(ArithCoder *c, Model *m)
+{
+    int idx, val;
+
+    idx = arith_get_prob(c, m->cum_prob);
+
+    val = m->idx2sym[idx];
+    model_update(m, idx);
+
+    arith_normalise(c);
+
+    return val;
+}
+
+static void pixctx_reset(PixContext *ctx)
+{
+    int i, j, k;
+
+    for (i = 0; i < ctx->cache_size; i++)
+        ctx->cache[i] = i;
+
+    model_reset(&ctx->cache_model);
+    model_reset(&ctx->full_model);
+
+    for (i = 0; i < 4; i++)
+        for (j = 0; j < sec_order_sizes[i]; j++)
+            for (k = 0; k < 4; k++)
+                model_reset(&ctx->sec_models[i][j][k]);
+}
+
+static av_cold void pixctx_init(PixContext *ctx, int cache_size)
+{
+    int i, j, k;
+
+    ctx->cache_size = cache_size + 4;
+    ctx->num_syms   = cache_size;
+
+    for (i = 0; i < ctx->cache_size; i++)
+        ctx->cache[i] = i;
+
+    model_init(&ctx->cache_model, ctx->num_syms + 1, THRESH_LOW);
+    model_init(&ctx->full_model, 256, THRESH_HIGH);
+
+    for (i = 0; i < 4; i++) {
+        for (j = 0; j < sec_order_sizes[i]; j++) {
+            for (k = 0; k < 4; k++) {
+                model_init(&ctx->sec_models[i][j][k], 2 + i,
+                           i ? THRESH_LOW : THRESH_ADAPTIVE);
+            }
+        }
+    }
+}
+
+static int decode_top_left_pixel(ArithCoder *acoder, PixContext *pctx)
+{
+    int i, val, pix;
+
+    val = arith_get_model_sym(acoder, &pctx->cache_model);
+    if (val < pctx->num_syms) {
+        pix = pctx->cache[val];
+    } else {
+        pix = arith_get_model_sym(acoder, &pctx->full_model);
+        for (i = 0; i < pctx->cache_size - 1; i++)
+            if (pctx->cache[i] == pix)
+                break;
+        val = i;
+    }
+    if (val) {
+        for (i = val; i > 0; i--)
+            pctx->cache[i] = pctx->cache[i - 1];
+        pctx->cache[0] = pix;
+    }
+
+    return pix;
+}
+
+static int decode_pixel(ArithCoder *acoder, PixContext *pctx,
+                        uint8_t *ngb, int num_ngb)
+{
+    int i, val, pix;
+
+    val = arith_get_model_sym(acoder, &pctx->cache_model);
+    if (val < pctx->num_syms) {
+        int idx, j;
+
+
+        idx = 0;
+        for (i = 0; i < pctx->cache_size; i++) {
+            for (j = 0; j < num_ngb; j++)
+                if (pctx->cache[i] == ngb[j])
+                    break;
+            if (j == num_ngb) {
+                if (idx == val)
+                    break;
+                idx++;
+            }
+        }
+        val = FFMIN(i, pctx->cache_size - 1);
+        pix = pctx->cache[val];
+    } else {
+        pix = arith_get_model_sym(acoder, &pctx->full_model);
+        for (i = 0; i < pctx->cache_size - 1; i++)
+            if (pctx->cache[i] == pix)
+                break;
+        val = i;
+    }
+    if (val) {
+        for (i = val; i > 0; i--)
+            pctx->cache[i] = pctx->cache[i - 1];
+        pctx->cache[0] = pix;
+    }
+
+    return pix;
+}
+
+static int decode_pixel_in_context(ArithCoder *acoder, PixContext *pctx,
+                                   uint8_t *src, int stride, int x, int y,
+                                   int has_right)
+{
+    uint8_t neighbours[4];
+    uint8_t ref_pix[4];
+    int nlen;
+    int layer = 0, sub;
+    int pix;
+    int i, j;
+
+    if (!y) {
+        memset(neighbours, src[-1], 4);
+    } else {
+        neighbours[TOP] = src[-stride];
+        if (!x) {
+            neighbours[TOP_LEFT] = neighbours[LEFT] = neighbours[TOP];
+        } else {
+            neighbours[TOP_LEFT] = src[-stride - 1];
+            neighbours[    LEFT] = src[-1];
+        }
+        if (has_right)
+            neighbours[TOP_RIGHT] = src[-stride + 1];
+        else
+            neighbours[TOP_RIGHT] = neighbours[TOP];
+    }
+
+    sub = 0;
+    if (x >= 2 && src[-2] == neighbours[LEFT])
+        sub  = 1;
+    if (y >= 2 && src[-2 * stride] == neighbours[TOP])
+        sub |= 2;
+
+    nlen = 1;
+    ref_pix[0] = neighbours[0];
+    for (i = 1; i < 4; i++) {
+        for (j = 0; j < nlen; j++)
+            if (ref_pix[j] == neighbours[i])
+                break;
+        if (j == nlen)
+            ref_pix[nlen++] = neighbours[i];
+    }
+
+    switch (nlen) {
+    case 1:
+    case 4:
+        layer = 0;
+        break;
+    case 2:
+        if (neighbours[TOP] == neighbours[TOP_LEFT]) {
+            if (neighbours[TOP_RIGHT] == neighbours[TOP_LEFT])
+                layer = 3;
+            else if (neighbours[LEFT] == neighbours[TOP_LEFT])
+                layer = 2;
+            else
+                layer = 4;
+        } else if (neighbours[TOP_RIGHT] == neighbours[TOP_LEFT]) {
+            if (neighbours[LEFT] == neighbours[TOP_LEFT])
+                layer = 1;
+            else
+                layer = 5;
+        } else if (neighbours[LEFT] == neighbours[TOP_LEFT]) {
+            layer = 6;
+        } else {
+            layer = 0;
+        }
+        break;
+    case 3:
+        if (neighbours[TOP] == neighbours[TOP_LEFT])
+            layer = 0;
+        else if (neighbours[TOP_RIGHT] == neighbours[TOP_LEFT])
+            layer = 1;
+        else if (neighbours[LEFT] == neighbours[TOP_LEFT])
+            layer = 2;
+        else if (neighbours[TOP_RIGHT] == neighbours[TOP])
+            layer = 3;
+        else if (neighbours[TOP] == neighbours[LEFT])
+            layer = 4;
+        else
+            layer = 5;
+        break;
+    }
+
+    pix = arith_get_model_sym(acoder, &pctx->sec_models[nlen - 1][layer][sub]);
+    if (pix < nlen)
+        return ref_pix[pix];
+    else
+        return decode_pixel(acoder, pctx, ref_pix, nlen);
+}
+
+static int decode_region(MSS1Context *ctx, ArithCoder *acoder, uint8_t *dst,
+                         int x, int y, int width, int height, int stride,
+                         PixContext *pctx)
+{
+    int i, j;
+
+    dst += x + y * stride;
+
+    dst[0] = decode_top_left_pixel(acoder, pctx);
+    for (j = 0; j < height; j++) {
+        for (i = 0; i < width; i++) {
+            if (!i && !j)
+                continue;
+
+            dst[i] = decode_pixel_in_context(acoder, pctx, dst + i, stride,
+                                             i, j, width - i - 1);
+        }
+        dst += stride;
+    }
+
+    return 0;
+}
+
+static int decode_region_masked(MSS1Context *ctx, ArithCoder *acoder,
+                                uint8_t *dst, int stride, uint8_t *mask,
+                                int mask_stride, int x, int y,
+                                int width, int height,
+                                PixContext *pctx)
+{
+    int i, j;
+
+    dst  += x + y * stride;
+    mask += x + y * mask_stride;
+
+    if (mask[0] != 0xFF)
+        dst[0] = decode_top_left_pixel(acoder, pctx);
+    for (j = 0; j < height; j++) {
+        for (i = 0; i < width; i++) {
+            if (!i && !j || mask[i] != 0xFF)
+                continue;
+
+            dst[i] = decode_pixel_in_context(acoder, pctx, dst + i, stride,
+                                             i, j, width - i - 1);
+        }
+        dst  += stride;
+        mask += mask_stride;
+    }
+
+    return 0;
+}
+
+static av_cold void codec_init(MSS1Context *ctx)
+{
+    model_init(&ctx->intra_region, 2, THRESH_ADAPTIVE);
+    model_init(&ctx->inter_region, 2, THRESH_ADAPTIVE);
+    model_init(&ctx->split_mode,   3, THRESH_HIGH);
+    model_init(&ctx->edge_mode,    2, THRESH_HIGH);
+    model_init(&ctx->pivot,        3, THRESH_LOW);
+    pixctx_init(&ctx->intra_pix_ctx, 8);
+    pixctx_init(&ctx->inter_pix_ctx, 2);
+    ctx->corrupted = 1;
+}
+
+static void codec_reset(MSS1Context *ctx)
+{
+    model_reset(&ctx->intra_region);
+    model_reset(&ctx->inter_region);
+    model_reset(&ctx->split_mode);
+    model_reset(&ctx->edge_mode);
+    model_reset(&ctx->pivot);
+    pixctx_reset(&ctx->intra_pix_ctx);
+    pixctx_reset(&ctx->inter_pix_ctx);
+
+    ctx->corrupted = 0;
+}
+
+static int decode_pal(MSS1Context *ctx, ArithCoder *acoder)
+{
+    int i, ncol, r, g, b;
+    uint32_t *pal = ctx->pal + 256 - ctx->free_colours;
+
+    if (!ctx->free_colours)
+        return 0;
+
+    ncol = arith_get_number(acoder, ctx->free_colours + 1);
+    for (i = 0; i < ncol; i++) {
+        r = arith_get_bits(acoder, 8);
+        g = arith_get_bits(acoder, 8);
+        b = arith_get_bits(acoder, 8);
+        *pal++ = (r << 16) | (g << 8) | b;
+    }
+
+    return 0;
+}
+
+static int decode_pivot(MSS1Context *ctx, ArithCoder *acoder, int base)
+{
+    int val, inv;
+
+    inv = arith_get_model_sym(acoder, &ctx->edge_mode);
+    val = arith_get_model_sym(acoder, &ctx->pivot) + 1;
+
+    if (val > 2) {
+        if ((base + 1) / 2 - 2 <= 0) {
+            ctx->corrupted = 1;
+            return 0;
+        }
+        val = arith_get_number(acoder, (base + 1) / 2 - 2) + 3;
+    }
+
+    if (val == base) {
+        ctx->corrupted = 1;
+        return 0;
+    }
+
+    return inv ? base - val : val;
+}
+
+static int decode_region_intra(MSS1Context *ctx, ArithCoder *acoder,
+                               int x, int y, int width, int height)
+{
+    int mode;
+
+    mode = arith_get_model_sym(acoder, &ctx->intra_region);
+
+    if (!mode) {
+        int i, pix;
+        int stride = ctx->pic_stride;
+        uint8_t *dst = ctx->pic_start + x + y * stride;
+
+        pix = decode_top_left_pixel(acoder, &ctx->intra_pix_ctx);
+        for (i = 0; i < height; i++, dst += stride)
+            memset(dst, pix, width);
+    } else {
+        return decode_region(ctx, acoder, ctx->pic_start,
+                             x, y, width, height, ctx->pic_stride,
+                             &ctx->intra_pix_ctx);
+    }
+
+    return 0;
+}
+
+static int decode_intra(MSS1Context *ctx, ArithCoder *acoder,
+                        int x, int y, int width, int height)
+{
+    int mode, pivot;
+
+    if (ctx->corrupted)
+        return -1;
+
+    mode = arith_get_model_sym(acoder, &ctx->split_mode);
+
+    switch (mode) {
+    case SPLIT_VERT:
+        pivot = decode_pivot(ctx, acoder, height);
+        if (ctx->corrupted)
+            return -1;
+        if (decode_intra(ctx, acoder, x, y, width, pivot))
+            return -1;
+        if (decode_intra(ctx, acoder, x, y + pivot, width, height - pivot))
+            return -1;
+        break;
+    case SPLIT_HOR:
+        pivot = decode_pivot(ctx, acoder, width);
+        if (ctx->corrupted)
+            return -1;
+        if (decode_intra(ctx, acoder, x, y, pivot, height))
+            return -1;
+        if (decode_intra(ctx, acoder, x + pivot, y, width - pivot, height))
+            return -1;
+        break;
+    case SPLIT_NONE:
+        return decode_region_intra(ctx, acoder, x, y, width, height);
+    default:
+        return -1;
+    }
+
+    return 0;
+}
+
+static int decode_region_inter(MSS1Context *ctx, ArithCoder *acoder,
+                               int x, int y, int width, int height)
+{
+    int mode;
+
+    mode = arith_get_model_sym(acoder, &ctx->inter_region);
+
+    if (!mode) {
+        mode = decode_top_left_pixel(acoder, &ctx->inter_pix_ctx);
+        if (mode != 0xFF) {
+            return 0;
+        } else {
+            return decode_region_intra(ctx, acoder, x, y, width, height);
+        }
+    } else {
+        if (decode_region(ctx, acoder, ctx->mask,
+                          x, y, width, height, ctx->mask_linesize,
+                          &ctx->inter_pix_ctx) < 0)
+            return -1;
+        return decode_region_masked(ctx, acoder, ctx->pic_start,
+                                    -ctx->pic.linesize[0], ctx->mask,
+                                    ctx->mask_linesize,
+                                    x, y, width, height,
+                                    &ctx->intra_pix_ctx);
+    }
+
+    return 0;
+}
+
+static int decode_inter(MSS1Context *ctx, ArithCoder *acoder,
+                        int x, int y, int width, int height)
+{
+    int mode, pivot;
+
+    if (ctx->corrupted)
+        return -1;
+
+    mode = arith_get_model_sym(acoder, &ctx->split_mode);
+
+    switch (mode) {
+    case SPLIT_VERT:
+        pivot = decode_pivot(ctx, acoder, height);
+        if (decode_inter(ctx, acoder, x, y, width, pivot))
+            return -1;
+        if (decode_inter(ctx, acoder, x, y + pivot, width, height - pivot))
+            return -1;
+        break;
+    case SPLIT_HOR:
+        pivot = decode_pivot(ctx, acoder, width);
+        if (decode_inter(ctx, acoder, x, y, pivot, height))
+            return -1;
+        if (decode_inter(ctx, acoder, x + pivot, y, width - pivot, height))
+            return -1;
+        break;
+    case SPLIT_NONE:
+        return decode_region_inter(ctx, acoder, x, y, width, height);
+    default:
+        return -1;
+    }
+
+    return 0;
+}
+
+static int mss1_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
+                             AVPacket *avpkt)
+{
+    const uint8_t *buf = avpkt->data;
+    int buf_size = avpkt->size;
+    MSS1Context *c = avctx->priv_data;
+    GetBitContext gb;
+    ArithCoder acoder;
+    int pal_changed = 0;
+    int ret;
+
+    init_get_bits(&gb, buf, buf_size * 8);
+    arith_init(&acoder, &gb);
+
+    c->pic.reference    = 3;
+    c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
+                          FF_BUFFER_HINTS_REUSABLE;
+    if ((ret = avctx->reget_buffer(avctx, &c->pic)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
+        return ret;
+    }
+
+    c->pic_start  = c->pic.data[0] + c->pic.linesize[0] * (avctx->height - 1);
+    c->pic_stride = -c->pic.linesize[0];
+    if (!arith_get_bit(&acoder)) {
+        codec_reset(c);
+        pal_changed      = decode_pal(c, &acoder);
+        c->corrupted     = decode_intra(c, &acoder, 0, 0,
+                                        avctx->width, avctx->height);
+        c->pic.key_frame = 1;
+        c->pic.pict_type = AV_PICTURE_TYPE_I;
+    } else {
+        if (c->corrupted)
+            return AVERROR_INVALIDDATA;
+        c->corrupted     = decode_inter(c, &acoder, 0, 0,
+                                        avctx->width, avctx->height);
+        c->pic.key_frame = 0;
+        c->pic.pict_type = AV_PICTURE_TYPE_P;
+    }
+    if (c->corrupted)
+        return AVERROR_INVALIDDATA;
+    memcpy(c->pic.data[1], c->pal, AVPALETTE_SIZE);
+    c->pic.palette_has_changed = pal_changed;
+
+    *data_size = sizeof(AVFrame);
+    *(AVFrame*)data = c->pic;
+
+    /* always report that the buffer was completely consumed */
+    return buf_size;
+}
+
+static av_cold int mss1_decode_init(AVCodecContext *avctx)
+{
+    MSS1Context * const c = avctx->priv_data;
+    int i;
+
+    c->avctx = avctx;
+
+    if (avctx->extradata_size < 52 + 256 * 3) {
+        av_log(avctx, AV_LOG_ERROR, "Insufficient extradata size %d\n",
+               avctx->extradata_size);
+        return AVERROR_INVALIDDATA;
+    }
+
+    if (AV_RB32(avctx->extradata) < avctx->extradata_size) {
+        av_log(avctx, AV_LOG_ERROR,
+               "Insufficient extradata size: expected %d got %d\n",
+               AV_RB32(avctx->extradata),
+               avctx->extradata_size);
+        return AVERROR_INVALIDDATA;
+    }
+
+    av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d\n",
+           AV_RB32(avctx->extradata + 4), AV_RB32(avctx->extradata + 8));
+    c->free_colours     = AV_RB32(avctx->extradata + 48);
+    av_log(avctx, AV_LOG_DEBUG, "%d free colour(s)\n", c->free_colours);
+    avctx->coded_width  = AV_RB32(avctx->extradata + 20);
+    avctx->coded_height = AV_RB32(avctx->extradata + 24);
+
+    av_log(avctx, AV_LOG_DEBUG, "Display dimensions %dx%d\n",
+           AV_RB32(avctx->extradata + 12), AV_RB32(avctx->extradata + 16));
+    av_log(avctx, AV_LOG_DEBUG, "Coded dimensions %dx%d\n",
+           avctx->coded_width, avctx->coded_height);
+    av_log(avctx, AV_LOG_DEBUG, "%g frames per second\n",
+           av_int2float(AV_RB32(avctx->extradata + 28)));
+    av_log(avctx, AV_LOG_DEBUG, "Bitrate %d bps\n",
+           AV_RB32(avctx->extradata + 32));
+    av_log(avctx, AV_LOG_DEBUG, "Max. lead time %g ms\n",
+           av_int2float(AV_RB32(avctx->extradata + 36)));
+    av_log(avctx, AV_LOG_DEBUG, "Max. lag time %g ms\n",
+           av_int2float(AV_RB32(avctx->extradata + 40)));
+    av_log(avctx, AV_LOG_DEBUG, "Max. seek time %g ms\n",
+           av_int2float(AV_RB32(avctx->extradata + 44)));
+
+    for (i = 0; i < 256; i++)
+        c->pal[i] = AV_RB24(avctx->extradata + 52 + i * 3);
+
+    avctx->pix_fmt = PIX_FMT_PAL8;
+
+    c->mask_linesize = FFALIGN(avctx->width, 16);
+    c->mask          = av_malloc(c->mask_linesize * avctx->height);
+    if (!c->mask) {
+        av_log(avctx, AV_LOG_ERROR, "Cannot allocate mask plane\n");
+        return AVERROR(ENOMEM);
+    }
+
+    avctx->coded_frame = &c->pic;
+
+    codec_init(c);
+
+    return 0;
+}
+
+static av_cold int mss1_decode_end(AVCodecContext *avctx)
+{
+    MSS1Context * const c = avctx->priv_data;
+
+    if (c->pic.data[0])
+        avctx->release_buffer(avctx, &c->pic);
+    av_freep(&c->mask);
+
+    return 0;
+}
+
+AVCodec ff_mss1_decoder = {
+    .name           = "mss1",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = CODEC_ID_MSS1,
+    .priv_data_size = sizeof(MSS1Context),
+    .init           = mss1_decode_init,
+    .close          = mss1_decode_end,
+    .decode         = mss1_decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
+    .long_name      = NULL_IF_CONFIG_SMALL("MS Screen 1"),
+};
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 2c3a941..a576578 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -27,7 +27,7 @@
  */
 
 #define LIBAVCODEC_VERSION_MAJOR 54
-#define LIBAVCODEC_VERSION_MINOR  26
+#define LIBAVCODEC_VERSION_MINOR  27
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
diff --git a/libavdevice/dv1394.c b/libavdevice/dv1394.c
index 13c0dbb..dae1c27 100644
--- a/libavdevice/dv1394.c
+++ b/libavdevice/dv1394.c
@@ -26,8 +26,6 @@
 #include <poll.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
-#include <sys/time.h>
-#include <time.h>
 
 #include "libavutil/log.h"
 #include "libavutil/opt.h"
diff --git a/libavdevice/fbdev.c b/libavdevice/fbdev.c
index 77e91d7..40eed68 100644
--- a/libavdevice/fbdev.c
+++ b/libavdevice/fbdev.c
@@ -32,7 +32,6 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <sys/time.h>
 #include <sys/mman.h>
 #include <time.h>
 #include <linux/fb.h>
diff --git a/libavdevice/oss_audio.c b/libavdevice/oss_audio.c
index c86d2b4..53acba3 100644
--- a/libavdevice/oss_audio.c
+++ b/libavdevice/oss_audio.c
@@ -33,8 +33,6 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
-#include <sys/time.h>
-#include <sys/select.h>
 
 #include "libavutil/log.h"
 #include "libavutil/opt.h"
diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c
index bf9c13b..0369d71 100644
--- a/libavdevice/v4l2.c
+++ b/libavdevice/v4l2.c
@@ -46,7 +46,6 @@
 #endif
 #include <linux/videodev2.h>
 #endif
-#include <time.h>
 #include "libavutil/imgutils.h"
 #include "libavutil/log.h"
 #include "libavutil/opt.h"
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 8650b08..df684ca 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1854,10 +1854,9 @@ void av_dump_format(AVFormatContext *ic,
                     const char *url,
                     int is_output);
 
-/**
- * Get the current time in microseconds.
- */
+#if FF_API_AV_GETTIME
 int64_t av_gettime(void);
+#endif
 
 /**
  * Return in 'buf' the path with '%d' replaced by a number.
diff --git a/libavformat/http.c b/libavformat/http.c
index 96a7eed..0314557 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -21,7 +21,6 @@
 
 #include "libavutil/avstring.h"
 #include "avformat.h"
-#include <unistd.h>
 #include "internal.h"
 #include "network.h"
 #include "http.h"
diff --git a/libavformat/mmst.c b/libavformat/mmst.c
index e3515b6..c3d2ebb 100644
--- a/libavformat/mmst.c
+++ b/libavformat/mmst.c
@@ -144,7 +144,7 @@ static int send_command_packet(MMSTContext *mmst)
         av_log(NULL, AV_LOG_ERROR,
                "Failed to write data of length %d: %d (%s)\n",
                exact_length, write_result,
-               write_result < 0 ? strerror(write_result) :
+               write_result < 0 ? strerror(AVUNERROR(write_result)) :
                    "The server closed the connection");
         return AVERROR(EIO);
     }
@@ -246,7 +246,7 @@ static MMSSCPacketType get_tcp_server_response(MMSTContext *mmst)
             if(read_result < 0) {
                 av_log(NULL, AV_LOG_ERROR,
                        "Error reading packet header: %d (%s)\n",
-                       read_result, strerror(read_result));
+                       read_result, strerror(AVUNERROR(read_result)));
                 packet_type = SC_PKT_CANCEL;
             } else {
                 av_log(NULL, AV_LOG_ERROR,
@@ -266,7 +266,7 @@ static MMSSCPacketType get_tcp_server_response(MMSTContext *mmst)
                 av_log(NULL, AV_LOG_ERROR,
                        "Reading command packet length failed: %d (%s)\n",
                        read_result,
-                       read_result < 0 ? strerror(read_result) :
+                       read_result < 0 ? strerror(AVUNERROR(read_result)) :
                            "The server closed the connection");
                 return read_result < 0 ? read_result : AVERROR(EIO);
             }
@@ -287,7 +287,7 @@ static MMSSCPacketType get_tcp_server_response(MMSTContext *mmst)
                 av_log(NULL, AV_LOG_ERROR,
                        "Reading pkt data (length=%d) failed: %d (%s)\n",
                        length_remaining, read_result,
-                       read_result < 0 ? strerror(read_result) :
+                       read_result < 0 ? strerror(AVUNERROR(read_result)) :
                            "The server closed the connection");
                 return read_result < 0 ? read_result : AVERROR(EIO);
             }
@@ -324,7 +324,7 @@ static MMSSCPacketType get_tcp_server_response(MMSTContext *mmst)
                 av_log(NULL, AV_LOG_ERROR,
                        "Failed to read packet data of size %d: %d (%s)\n",
                        length_remaining, read_result,
-                       read_result < 0 ? strerror(read_result) :
+                       read_result < 0 ? strerror(AVUNERROR(read_result)) :
                            "The server closed the connection");
                 return read_result < 0 ? read_result : AVERROR(EIO);
             }
diff --git a/libavformat/mov.c b/libavformat/mov.c
index 3aab48f..d686be6 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -1087,7 +1087,7 @@ static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         return AVERROR_INVALIDDATA;
 
     profile_level = avio_r8(pb);
-    if (profile_level & 0xf0 != 0xc0)
+    if ((profile_level & 0xf0) != 0xc0)
         return 0;
 
     av_free(st->codec->extradata);
diff --git a/libavformat/network.h b/libavformat/network.h
index 191c008..d890e7c 100644
--- a/libavformat/network.h
+++ b/libavformat/network.h
@@ -47,6 +47,8 @@
 # undef EINPROGRESS
 #endif
 #define EINPROGRESS     WSAEINPROGRESS
+#define getsockopt(a, b, c, d, e) getsockopt(a, b, c, (char*) d, e)
+#define setsockopt(a, b, c, d, e) setsockopt(a, b, c, (const char*) d, e)
 
 int ff_neterrno(void);
 #else
diff --git a/libavformat/os_support.c b/libavformat/os_support.c
index 913ca53..e187044 100644
--- a/libavformat/os_support.c
+++ b/libavformat/os_support.c
@@ -58,7 +58,6 @@ int ff_win32_open(const char *filename_utf8, int oflag, int pmode)
 
 #if CONFIG_NETWORK
 #include <fcntl.h>
-#include <unistd.h>
 #if !HAVE_POLL_H
 #include <sys/time.h>
 #if HAVE_WINSOCK2_H
@@ -253,7 +252,8 @@ const char *ff_gai_strerror(int ecode)
 int ff_socket_nonblock(int socket, int enable)
 {
 #if HAVE_WINSOCK2_H
-   return ioctlsocket(socket, FIONBIO, &enable);
+   u_long param = enable;
+   return ioctlsocket(socket, FIONBIO, &param);
 #else
    if (enable)
       return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
diff --git a/libavformat/riff.c b/libavformat/riff.c
index b03257b..3fc4fb2 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -307,6 +307,7 @@ const AVCodecTag ff_codec_bmp_tags[] = {
     { CODEC_ID_Y41P,         MKTAG('Y', '4', '1', 'P') },
     { CODEC_ID_FLIC,         MKTAG('A', 'F', 'L', 'C') },
     { CODEC_ID_EXR,          MKTAG('e', 'x', 'r', ' ') },
+    { CODEC_ID_MSS1,         MKTAG('M', 'S', 'S', '1') },
     { CODEC_ID_NONE,         0 }
 };
 
diff --git a/libavformat/rtmphttp.c b/libavformat/rtmphttp.c
index c431d28..5eb5007 100644
--- a/libavformat/rtmphttp.c
+++ b/libavformat/rtmphttp.c
@@ -24,6 +24,8 @@
  * RTMP HTTP protocol
  */
 
+#include <unistd.h>
+
 #include "libavutil/avstring.h"
 #include "libavutil/intfloat.h"
 #include "libavutil/opt.h"
@@ -44,6 +46,7 @@ typedef struct RTMP_HTTPContext {
     int          out_capacity;      ///< current output buffer capacity
     int          initialized;       ///< flag indicating when the http context is initialized
     int          finishing;         ///< flag indicating when the client closes the connection
+    int          nb_bytes_read;     ///< number of bytes read since the last request
 } RTMP_HTTPContext;
 
 static int rtmp_http_send_cmd(URLContext *h, const char *cmd)
@@ -70,6 +73,9 @@ static int rtmp_http_send_cmd(URLContext *h, const char *cmd)
     if ((ret = ffurl_read(rt->stream, &c, 1)) < 0)
         return ret;
 
+    /* re-init the number of bytes read */
+    rt->nb_bytes_read = 0;
+
     return ret;
 }
 
@@ -117,6 +123,12 @@ static int rtmp_http_read(URLContext *h, uint8_t *buf, int size)
                 if ((ret = rtmp_http_send_cmd(h, "send")) < 0)
                     return ret;
             } else {
+                if (rt->nb_bytes_read == 0) {
+                    /* Wait 50ms before retrying to read a server reply in
+                     * order to reduce the number of idle requets. */
+                    usleep(50000);
+                }
+
                 if ((ret = rtmp_http_write(h, "", 1)) < 0)
                     return ret;
 
@@ -131,6 +143,7 @@ static int rtmp_http_read(URLContext *h, uint8_t *buf, int size)
         } else {
             off  += ret;
             size -= ret;
+            rt->nb_bytes_read += ret;
         }
     } while (off <= 0);
 
diff --git a/libavformat/rtpdec_h264.c b/libavformat/rtpdec_h264.c
index 096b35f..063836a 100644
--- a/libavformat/rtpdec_h264.c
+++ b/libavformat/rtpdec_h264.c
@@ -39,7 +39,6 @@
 #include "avformat.h"
 #include "mpegts.h"
 
-#include <unistd.h>
 #include "network.h"
 #include <assert.h>
 
diff --git a/libavformat/rtpproto.c b/libavformat/rtpproto.c
index de7a401..f140580 100644
--- a/libavformat/rtpproto.c
+++ b/libavformat/rtpproto.c
@@ -31,7 +31,6 @@
 #include "rtpdec.h"
 #include "url.h"
 
-#include <unistd.h>
 #include <stdarg.h>
 #include "internal.h"
 #include "network.h"
@@ -40,7 +39,6 @@
 #if HAVE_POLL_H
 #include <sys/poll.h>
 #endif
-#include <sys/time.h>
 
 #define RTP_TX_BUF_SIZE  (64 * 1024)
 #define RTP_RX_BUF_SIZE  (128 * 1024)
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index 68ca247..c3b40aa 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -30,7 +30,6 @@
 #include "avformat.h"
 #include "avio_internal.h"
 
-#include <sys/time.h>
 #if HAVE_POLL_H
 #include <poll.h>
 #endif
diff --git a/libavformat/rtspenc.c b/libavformat/rtspenc.c
index 58cd807..ece879e 100644
--- a/libavformat/rtspenc.c
+++ b/libavformat/rtspenc.c
@@ -21,7 +21,6 @@
 
 #include "avformat.h"
 
-#include <sys/time.h>
 #if HAVE_POLL_H
 #include <poll.h>
 #endif
diff --git a/libavformat/sapdec.c b/libavformat/sapdec.c
index 0ee5110..4626af7 100644
--- a/libavformat/sapdec.c
+++ b/libavformat/sapdec.c
@@ -30,7 +30,6 @@
 #if HAVE_POLL_H
 #include <poll.h>
 #endif
-#include <sys/time.h>
 
 struct SAPState {
     URLContext *ann_fd;
diff --git a/libavformat/sctp.c b/libavformat/sctp.c
index 817b004..07de498 100644
--- a/libavformat/sctp.c
+++ b/libavformat/sctp.c
@@ -39,7 +39,6 @@
 
 #include <netinet/in.h>
 #include <netinet/sctp.h>
-#include <sys/time.h>
 #include <unistd.h>
 
 #include "config.h"
diff --git a/libavformat/tcp.c b/libavformat/tcp.c
index 1cc7e0a..c42c1ed 100644
--- a/libavformat/tcp.c
+++ b/libavformat/tcp.c
@@ -28,7 +28,6 @@
 #if HAVE_POLL_H
 #include <poll.h>
 #endif
-#include <sys/time.h>
 
 typedef struct TCPContext {
     int fd;
@@ -139,12 +138,15 @@ static int tcp_open(URLContext *h, const char *uri, int flags)
         }
         /* test error */
         optlen = sizeof(ret);
-        getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
+        if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen))
+            ret = AVUNERROR(ff_neterrno());
         if (ret != 0) {
+            char errbuf[100];
+            ret = AVERROR(ret);
+            av_strerror(ret, errbuf, sizeof(errbuf));
             av_log(h, AV_LOG_ERROR,
                    "TCP connection to %s:%d failed: %s\n",
-                   hostname, port, strerror(ret));
-            ret = AVERROR(ret);
+                   hostname, port, errbuf);
             goto fail;
         }
     }
diff --git a/libavformat/udp.c b/libavformat/udp.c
index 51d7ed0..9ed8f95 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -42,8 +42,6 @@
 #include <pthread.h>
 #endif
 
-#include <sys/time.h>
-
 #ifndef IPV6_ADD_MEMBERSHIP
 #define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
 #define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
@@ -78,13 +76,20 @@ typedef struct {
     int remaining_in_dg;
 } UDPContext;
 
+static void log_net_error(void *ctx, int level, const char* prefix)
+{
+    char errbuf[100];
+    av_strerror(ff_neterrno(), errbuf, sizeof(errbuf));
+    av_log(ctx, level, "%s: %s\n", prefix, errbuf);
+}
+
 static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
                                  struct sockaddr *addr)
 {
 #ifdef IP_MULTICAST_TTL
     if (addr->sa_family == AF_INET) {
         if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL): %s\n", strerror(errno));
+            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL)");
             return -1;
         }
     }
@@ -92,7 +97,7 @@ static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
 #if defined(IPPROTO_IPV6) && defined(IPV6_MULTICAST_HOPS)
     if (addr->sa_family == AF_INET6) {
         if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS): %s\n", strerror(errno));
+            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS)");
             return -1;
         }
     }
@@ -109,7 +114,7 @@ static int udp_join_multicast_group(int sockfd, struct sockaddr *addr)
         mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
         mreq.imr_interface.s_addr= INADDR_ANY;
         if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP): %s\n", strerror(errno));
+            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP)");
             return -1;
         }
     }
@@ -121,7 +126,7 @@ static int udp_join_multicast_group(int sockfd, struct sockaddr *addr)
         memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
         mreq6.ipv6mr_interface= 0;
         if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP): %s\n", strerror(errno));
+            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP)");
             return -1;
         }
     }
@@ -138,7 +143,7 @@ static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr)
         mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
         mreq.imr_interface.s_addr= INADDR_ANY;
         if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP): %s\n", strerror(errno));
+            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP)");
             return -1;
         }
     }
@@ -150,7 +155,7 @@ static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr)
         memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
         mreq6.ipv6mr_interface= 0;
         if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP): %s\n", strerror(errno));
+            log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP)");
             return -1;
         }
     }
@@ -214,8 +219,8 @@ static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr,
         goto fail;
     for (res = res0; res; res=res->ai_next) {
         udp_fd = socket(res->ai_family, SOCK_DGRAM, 0);
-        if (udp_fd > 0) break;
-        av_log(NULL, AV_LOG_ERROR, "socket: %s\n", strerror(errno));
+        if (udp_fd != -1) break;
+        log_net_error(NULL, AV_LOG_ERROR, "socket");
     }
 
     if (udp_fd < 0)
@@ -239,9 +244,10 @@ static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr,
 static int udp_port(struct sockaddr_storage *addr, int addr_len)
 {
     char sbuf[sizeof(int)*3+1];
+    int error;
 
-    if (getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0,  sbuf, sizeof(sbuf), NI_NUMERICSERV) != 0) {
-        av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", strerror(errno));
+    if ((error = getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0,  sbuf, sizeof(sbuf), NI_NUMERICSERV)) != 0) {
+        av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(error));
         return -1;
     }
 
@@ -289,7 +295,7 @@ int ff_udp_set_remote_url(URLContext *h, const char *uri)
                 if (connect(s->udp_fd, (struct sockaddr *) &s->dest_addr,
                             s->dest_addr_len)) {
                     s->is_connected = 0;
-                    av_log(h, AV_LOG_ERROR, "connect: %s\n", strerror(errno));
+                    log_net_error(h, AV_LOG_ERROR, "connect");
                     return AVERROR(EIO);
                 }
             }
@@ -479,7 +485,7 @@ static int udp_open(URLContext *h, const char *uri, int flags)
      * bind failed */
     /* the bind is needed to give a port to the socket now */
     if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) {
-        av_log(h, AV_LOG_ERROR, "bind failed: %s\n", strerror(errno));
+        log_net_error(h, AV_LOG_ERROR, "bind failed");
         goto fail;
     }
 
@@ -504,7 +510,7 @@ static int udp_open(URLContext *h, const char *uri, int flags)
         /* limit the tx buf size to limit latency */
         tmp = s->buffer_size;
         if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
-            av_log(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF): %s\n", strerror(errno));
+            log_net_error(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF)");
             goto fail;
         }
     } else {
@@ -512,14 +518,14 @@ static int udp_open(URLContext *h, const char *uri, int flags)
          * avoid losing data on OSes that set this too low by default. */
         tmp = s->buffer_size;
         if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) {
-            av_log(h, AV_LOG_WARNING, "setsockopt(SO_RECVBUF): %s\n", strerror(errno));
+            log_net_error(h, AV_LOG_WARNING, "setsockopt(SO_RECVBUF)");
         }
         /* make the socket non-blocking */
         ff_socket_nonblock(udp_fd, 1);
     }
     if (s->is_connected) {
         if (connect(udp_fd, (struct sockaddr *) &s->dest_addr, s->dest_addr_len)) {
-            av_log(h, AV_LOG_ERROR, "connect: %s\n", strerror(errno));
+            log_net_error(h, AV_LOG_ERROR, "connect");
             goto fail;
         }
     }
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 284cb9f..deac84a 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -41,8 +41,6 @@
 #include "riff.h"
 #include "audiointerleave.h"
 #include "url.h"
-#include <sys/time.h>
-#include <time.h>
 #include <stdarg.h>
 #if CONFIG_NETWORK
 #include "network.h"
@@ -3875,12 +3873,12 @@ void av_dump_format(AVFormatContext *ic,
     av_free(printed);
 }
 
-int64_t av_gettime(void)
+#if FF_API_AV_GETTIME && CONFIG_SHARED && HAVE_SYMVER
+FF_SYMVER(int64_t, av_gettime, (void), "LIBAVFORMAT_54")
 {
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
+    return av_gettime();
 }
+#endif
 
 uint64_t ff_ntp_time(void)
 {
diff --git a/libavformat/version.h b/libavformat/version.h
index 3b61ea3..8d567d9 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -77,5 +77,8 @@
 #ifndef FF_API_INTERLEAVE_PACKET
 #define FF_API_INTERLEAVE_PACKET       (LIBAVFORMAT_VERSION_MAJOR < 55)
 #endif
+#ifndef FF_API_AV_GETTIME
+#define FF_API_AV_GETTIME              (LIBAVFORMAT_VERSION_MAJOR < 55)
+#endif
 
 #endif /* AVFORMAT_VERSION_H */
diff --git a/libavutil/Makefile b/libavutil/Makefile
index 3dfe2fd..4a9eb80 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -39,6 +39,7 @@ HEADERS = adler32.h                                                     \
           rational.h                                                    \
           samplefmt.h                                                   \
           sha.h                                                         \
+          time.h                                                        \
           timecode.h                                                    \
           timestamp.h                                                   \
 
@@ -83,6 +84,7 @@ OBJS = adler32.o                                                        \
        rc4.o                                                            \
        samplefmt.o                                                      \
        sha.o                                                            \
+       time.o                                                           \
        timecode.o                                                       \
        tree.o                                                           \
        utils.o                                                          \
diff --git a/libavutil/des.c b/libavutil/des.c
index 4598f32..63eb7f5 100644
--- a/libavutil/des.c
+++ b/libavutil/des.c
@@ -343,7 +343,7 @@ void av_des_mac(AVDES *d, uint8_t *dst, const uint8_t *src, int count) {
 #undef srand
 #include <stdlib.h>
 #include <stdio.h>
-#include <sys/time.h>
+#include "libavutil/time.h"
 static uint64_t rand64(void) {
     uint64_t r = rand();
     r = (r << 32) | rand();
@@ -390,13 +390,11 @@ int main(void) {
 #ifdef GENTABLES
     int j;
 #endif
-    struct timeval tv;
     uint64_t key[3];
     uint64_t data;
     uint64_t ct;
     uint64_t roundkeys[16];
-    gettimeofday(&tv, NULL);
-    srand(tv.tv_sec * 1000 * 1000 + tv.tv_usec);
+    srand(av_gettime());
     key[0] = AV_RB64(test_key);
     data = AV_RB64(plain);
     gen_roundkeys(roundkeys, key[0]);
diff --git a/libavutil/mathematics.h b/libavutil/mathematics.h
index 93314ba..844747e 100644
--- a/libavutil/mathematics.h
+++ b/libavutil/mathematics.h
@@ -26,30 +26,12 @@
 #include "attributes.h"
 #include "rational.h"
 
-#ifndef M_E
-#define M_E            2.7182818284590452354   /* e */
-#endif
-#ifndef M_LN2
-#define M_LN2          0.69314718055994530942  /* log_e 2 */
-#endif
-#ifndef M_LN10
-#define M_LN10         2.30258509299404568402  /* log_e 10 */
-#endif
 #ifndef M_LOG2_10
 #define M_LOG2_10      3.32192809488736234787  /* log_2 10 */
 #endif
 #ifndef M_PHI
 #define M_PHI          1.61803398874989484820   /* phi / golden ratio */
 #endif
-#ifndef M_PI
-#define M_PI           3.14159265358979323846  /* pi */
-#endif
-#ifndef M_SQRT1_2
-#define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */
-#endif
-#ifndef M_SQRT2
-#define M_SQRT2        1.41421356237309504880  /* sqrt(2) */
-#endif
 #ifndef NAN
 #define NAN            (0.0/0.0)
 #endif
diff --git a/libavutil/parseutils.c b/libavutil/parseutils.c
index 66c31e1..77ff888 100644
--- a/libavutil/parseutils.c
+++ b/libavutil/parseutils.c
@@ -21,7 +21,6 @@
  * misc parsing utilities
  */
 
-#include <sys/time.h>
 #include <time.h>
 
 #include "avstring.h"
diff --git a/libavutil/time.c b/libavutil/time.c
new file mode 100644
index 0000000..80c4029
--- a/dev/null
+++ b/libavutil/time.c
@@ -0,0 +1,46 @@
+/*
+ * 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 "config.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#if HAVE_GETTIMEOFDAY
+#include <sys/time.h>
+#elif HAVE_GETSYSTEMTIMEASFILETIME
+#include <windows.h>
+#endif
+
+#include "libavutil/time.h"
+
+int64_t av_gettime(void)
+{
+#if HAVE_GETTIMEOFDAY
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
+#elif HAVE_GETSYSTEMTIMEASFILETIME
+    FILETIME ft;
+    int64_t t;
+    GetSystemTimeAsFileTime(&ft);
+    t = (int64_t)ft.dwHighDateTime << 32 | ft.dwLowDateTime;
+    return t / 10 - 11644473600000000; /* Jan 1, 1601 */
+#else
+    return -1;
+#endif
+}
diff --git a/libavutil/time.h b/libavutil/time.h
new file mode 100644
index 0000000..2ee7e08
--- a/dev/null
+++ b/libavutil/time.h
@@ -0,0 +1,29 @@
+/*
+ * 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 AVUTIL_TIME_H
+#define AVUTIL_TIME_H
+
+#include <stdint.h>
+
+/**
+ * Get the current time in microseconds.
+ */
+int64_t av_gettime(void);
+
+#endif /* AVUTIL_TIME_H */
diff --git a/libswscale/bfin/swscale_bfin.c b/libswscale/bfin/swscale_bfin.c
index 3cd4f28..a51b2af 100644
--- a/libswscale/bfin/swscale_bfin.c
+++ b/libswscale/bfin/swscale_bfin.c
@@ -20,16 +20,9 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-#include <assert.h>
-#include "config.h"
-#include <unistd.h>
+#include <stdint.h>
 
-#include "libswscale/rgb2rgb.h"
-#include "libswscale/swscale.h"
+#include "config.h"
 #include "libswscale/swscale_internal.h"
 
 #if defined (__FDPIC__) && CONFIG_SRAM
@@ -46,14 +39,14 @@ int ff_bfin_yuyvtoyv12(const uint8_t *src, uint8_t *ydst, uint8_t *udst,
                        uint8_t *vdst, int width, int height,
                        int lumStride, int chromStride, int srcStride) L1CODE;
 
-static int uyvytoyv12_unscaled(SwsContext *c, uint8_t *src[], int srcStride[],
-                               int srcSliceY, int srcSliceH, uint8_t *dst[],
-                               int dstStride[])
+static int uyvytoyv12_unscaled(SwsContext *c, const uint8_t *src[],
+                               int srcStride[], int srcSliceY, int srcSliceH,
+                               uint8_t *dst[], int dstStride[])
 {
     uint8_t *dsty = dst[0] + dstStride[0] * srcSliceY;
     uint8_t *dstu = dst[1] + dstStride[1] * srcSliceY / 2;
     uint8_t *dstv = dst[2] + dstStride[2] * srcSliceY / 2;
-    uint8_t *ip   = src[0] + srcStride[0] * srcSliceY;
+    const uint8_t *ip = src[0] + srcStride[0] * srcSliceY;
     int w = dstStride[0];
 
     ff_bfin_uyvytoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
@@ -62,14 +55,14 @@ static int uyvytoyv12_unscaled(SwsContext *c, uint8_t *src[], int srcStride[],
     return srcSliceH;
 }
 
-static int yuyvtoyv12_unscaled(SwsContext *c, uint8_t *src[], int srcStride[],
-                               int srcSliceY, int srcSliceH, uint8_t *dst[],
-                               int dstStride[])
+static int yuyvtoyv12_unscaled(SwsContext *c, const uint8_t *src[],
+                               int srcStride[], int srcSliceY, int srcSliceH,
+                               uint8_t *dst[], int dstStride[])
 {
     uint8_t *dsty = dst[0] + dstStride[0] * srcSliceY;
     uint8_t *dstu = dst[1] + dstStride[1] * srcSliceY / 2;
     uint8_t *dstv = dst[2] + dstStride[2] * srcSliceY / 2;
-    uint8_t *ip   = src[0] + srcStride[0] * srcSliceY;
+    const uint8_t *ip = src[0] + srcStride[0] * srcSliceY;
     int w = dstStride[0];
 
     ff_bfin_yuyvtoyv12(ip, dsty, dstu, dstv, w, srcSliceH,
diff --git a/libswscale/bfin/yuv2rgb_bfin.c b/libswscale/bfin/yuv2rgb_bfin.c
index e7f657f..dae7f31 100644
--- a/libswscale/bfin/yuv2rgb_bfin.c
+++ b/libswscale/bfin/yuv2rgb_bfin.c
@@ -21,17 +21,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-#include <assert.h>
-#include <unistd.h>
 #include "libavutil/pixdesc.h"
+#include <stdint.h>
 
 #include "config.h"
-#include "libswscale/rgb2rgb.h"
-#include "libswscale/swscale.h"
 #include "libswscale/swscale_internal.h"
 
 #if defined(__FDPIC__) && CONFIG_SRAM
@@ -40,17 +33,20 @@
 #define L1CODE
 #endif
 
-void ff_bfin_yuv2rgb555_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+void ff_bfin_yuv2rgb555_line(const uint8_t *Y, const uint8_t *U,
+                             const uint8_t *V, uint8_t *out,
                              int w, uint32_t *coeffs) L1CODE;
 
-void ff_bfin_yuv2rgb565_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+void ff_bfin_yuv2rgb565_line(const uint8_t *Y, const uint8_t *U,
+                             const uint8_t *V, uint8_t *out,
                              int w, uint32_t *coeffs) L1CODE;
 
-void ff_bfin_yuv2rgb24_line(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
+void ff_bfin_yuv2rgb24_line(const uint8_t *Y, const uint8_t *U,
+                            const uint8_t *V, uint8_t *out,
                             int w, uint32_t *coeffs) L1CODE;
 
-typedef void (*ltransform)(uint8_t *Y, uint8_t *U, uint8_t *V, uint8_t *out,
-                           int w, uint32_t *coeffs);
+typedef void (*ltransform)(const uint8_t *Y, const uint8_t *U, const uint8_t *V,
+                           uint8_t *out, int w, uint32_t *coeffs);
 
 static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
 {
@@ -88,12 +84,13 @@ static void bfin_prepare_coefficients(SwsContext *c, int rgb, int masks)
     }
 }
 
-static int core_yuv420_rgb(SwsContext *c, uint8_t **in, int *instrides,
+static int core_yuv420_rgb(SwsContext *c, const uint8_t **in, int *instrides,
                            int srcSliceY, int srcSliceH, uint8_t **oplanes,
                            int *outstrides, ltransform lcscf,
                            int rgb, int masks)
 {
-    uint8_t *py, *pu, *pv, *op;
+    const uint8_t *py, *pu, *pv;
+    uint8_t *op;
     int w  = instrides[0];
     int h2 = srcSliceH >> 1;
     int i;
@@ -123,7 +120,7 @@ static int core_yuv420_rgb(SwsContext *c, uint8_t **in, int *instrides,
     return srcSliceH;
 }
 
-static int bfin_yuv420_rgb555(SwsContext *c, uint8_t **in, int *instrides,
+static int bfin_yuv420_rgb555(SwsContext *c, const uint8_t **in, int *instrides,
                               int srcSliceY, int srcSliceH,
                               uint8_t **oplanes, int *outstrides)
 {
@@ -131,7 +128,7 @@ static int bfin_yuv420_rgb555(SwsContext *c, uint8_t **in, int *instrides,
                            outstrides, ff_bfin_yuv2rgb555_line, 1, 555);
 }
 
-static int bfin_yuv420_bgr555(SwsContext *c, uint8_t **in, int *instrides,
+static int bfin_yuv420_bgr555(SwsContext *c, const uint8_t **in, int *instrides,
                               int srcSliceY, int srcSliceH,
                               uint8_t **oplanes, int *outstrides)
 {
@@ -139,7 +136,7 @@ static int bfin_yuv420_bgr555(SwsContext *c, uint8_t **in, int *instrides,
                            outstrides, ff_bfin_yuv2rgb555_line, 0, 555);
 }
 
-static int bfin_yuv420_rgb24(SwsContext *c, uint8_t **in, int *instrides,
+static int bfin_yuv420_rgb24(SwsContext *c, const uint8_t **in, int *instrides,
                              int srcSliceY, int srcSliceH,
                              uint8_t **oplanes, int *outstrides)
 {
@@ -147,7 +144,7 @@ static int bfin_yuv420_rgb24(SwsContext *c, uint8_t **in, int *instrides,
                            outstrides, ff_bfin_yuv2rgb24_line, 1, 888);
 }
 
-static int bfin_yuv420_bgr24(SwsContext *c, uint8_t **in, int *instrides,
+static int bfin_yuv420_bgr24(SwsContext *c, const uint8_t **in, int *instrides,
                              int srcSliceY, int srcSliceH,
                              uint8_t **oplanes, int *outstrides)
 {
@@ -155,7 +152,7 @@ static int bfin_yuv420_bgr24(SwsContext *c, uint8_t **in, int *instrides,
                            outstrides, ff_bfin_yuv2rgb24_line, 0, 888);
 }
 
-static int bfin_yuv420_rgb565(SwsContext *c, uint8_t **in, int *instrides,
+static int bfin_yuv420_rgb565(SwsContext *c, const uint8_t **in, int *instrides,
                               int srcSliceY, int srcSliceH,
                               uint8_t **oplanes, int *outstrides)
 {
@@ -163,7 +160,7 @@ static int bfin_yuv420_rgb565(SwsContext *c, uint8_t **in, int *instrides,
                            outstrides, ff_bfin_yuv2rgb565_line, 1, 565);
 }
 
-static int bfin_yuv420_bgr565(SwsContext *c, uint8_t **in, int *instrides,
+static int bfin_yuv420_bgr565(SwsContext *c, const uint8_t **in, int *instrides,
                               int srcSliceY, int srcSliceH,
                               uint8_t **oplanes, int *outstrides)
 {