Merge remote-tracking branch 'qatar/release/9' into release/1.1

* qatar/release/9:
  arm: Fall back to runtime cpu feature detection via /proc/cpuinfo
  doc/platform: Fix 10l typo
  xxan: properly handle odd heights.

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

3 files changed, 70 insertions, 22 deletions

diff --git a/libavcodec/xxan.c b/libavcodec/xxan.c
index ed1821772f..2476f5dea1 100644
--- a/libavcodec/xxan.c
+++ b/libavcodec/xxan.c
@@ -45,6 +45,11 @@ static av_cold int xan_decode_init(AVCodecContext *avctx)
 
     avctx->pix_fmt = AV_PIX_FMT_YUV420P;
 
+    if (avctx->height < 8) {
+        av_log(avctx, AV_LOG_ERROR, "Invalid frame height: %d.\n", avctx->height);
+        return AVERROR(EINVAL);
+    }
+
     s->buffer_size = avctx->width * avctx->height;
     s->y_buffer = av_malloc(s->buffer_size);
     if (!s->y_buffer)
@@ -212,6 +217,10 @@ static int xan_decode_chroma(AVCodecContext *avctx, unsigned chroma_off)
             U += s->pic.linesize[1];
             V += s->pic.linesize[2];
         }
+        if (avctx->height & 1) {
+            memcpy(U, U - s->pic.linesize[1], avctx->width >> 1);
+            memcpy(V, V - s->pic.linesize[2], avctx->width >> 1);
+        }
     } else {
         uint8_t *U2 = U + s->pic.linesize[1];
         uint8_t *V2 = V + s->pic.linesize[2];
@@ -236,6 +245,12 @@ static int xan_decode_chroma(AVCodecContext *avctx, unsigned chroma_off)
             U2 += s->pic.linesize[1] * 2;
             V2 += s->pic.linesize[2] * 2;
         }
+        if (avctx->height & 3) {
+            int lines = ((avctx->height + 1) >> 1) - (avctx->height >> 2) * 2;
+
+            memcpy(U, U - lines * s->pic.linesize[1], lines * s->pic.linesize[1]);
+            memcpy(V, V - lines * s->pic.linesize[2], lines * s->pic.linesize[2]);
+        }
     }
 
     return 0;
diff --git a/libavutil/arm/cpu.c b/libavutil/arm/cpu.c
index 041afc985a..b4aabc375e 100644
--- a/libavutil/arm/cpu.c
+++ b/libavutil/arm/cpu.c
@@ -34,6 +34,8 @@
 
 #include <stdint.h>
 #include <stdio.h>
+#include <string.h>
+#include "libavutil/avstring.h"
 
 #define AT_HWCAP        16
 
@@ -66,13 +68,44 @@ static int get_hwcap(uint32_t *hwcap)
     return err;
 }
 
+static int get_cpuinfo(uint32_t *hwcap)
+{
+    FILE *f = fopen("/proc/cpuinfo", "r");
+    char buf[200];
+
+    if (!f)
+        return -1;
+
+    *hwcap = 0;
+    while (fgets(buf, sizeof(buf), f)) {
+        if (av_strstart(buf, "Features", NULL)) {
+            if (strstr(buf, " edsp "))
+                *hwcap |= HWCAP_EDSP;
+            if (strstr(buf, " tls "))
+                *hwcap |= HWCAP_TLS;
+            if (strstr(buf, " thumbee "))
+                *hwcap |= HWCAP_THUMBEE;
+            if (strstr(buf, " vfp "))
+                *hwcap |= HWCAP_VFP;
+            if (strstr(buf, " vfpv3 "))
+                *hwcap |= HWCAP_VFPv3;
+            if (strstr(buf, " neon "))
+                *hwcap |= HWCAP_NEON;
+            break;
+        }
+    }
+    fclose(f);
+    return 0;
+}
+
 int ff_get_cpu_flags_arm(void)
 {
     int flags = CORE_CPU_FLAGS;
     uint32_t hwcap;
 
     if (get_hwcap(&hwcap) < 0)
-        return flags;
+        if (get_cpuinfo(&hwcap) < 0)
+            return flags;
 
 #define check_cap(cap, flag) do {               \
         if (hwcap & HWCAP_ ## cap)              \
diff --git a/tests/ref/fate/xxan-wc4 b/tests/ref/fate/xxan-wc4
index 34857bfd26..88dcc98ac5 100644
--- a/tests/ref/fate/xxan-wc4
+++ b/tests/ref/fate/xxan-wc4
@@ -1,22 +1,22 @@
 #tb 0: 1/15
-0,          0,          0,        1,    79360, 0x3b0a7d1b
-0,          1,          1,        1,    79360, 0x740842c3
-0,          2,          2,        1,    79360, 0x85160167
-0,          3,          3,        1,    79360, 0xaf510e92
-0,          4,          4,        1,    79360, 0x8e290bec
-0,          5,          5,        1,    79360, 0x51e981b0
-0,          6,          6,        1,    79360, 0x16e52c60
-0,          7,          7,        1,    79360, 0x66e1e60a
-0,          8,          8,        1,    79360, 0x40fa58f6
-0,          9,          9,        1,    79360, 0x00388edd
-0,         10,         10,        1,    79360, 0xc74f95bf
-0,         11,         11,        1,    79360, 0xf446a3fd
-0,         12,         12,        1,    79360, 0x27b5eb60
-0,         13,         13,        1,    79360, 0xea9266a2
-0,         14,         14,        1,    79360, 0x7b6a7907
-0,         15,         15,        1,    79360, 0x2be7d946
-0,         16,         16,        1,    79360, 0x61881ee4
-0,         17,         17,        1,    79360, 0x9214bd4f
-0,         18,         18,        1,    79360, 0xeb294afe
-0,         19,         19,        1,    79360, 0xc861ad55
-0,         20,         20,        1,    79360, 0x3d3b6220
+0,          0,          0,        1,    79360, 0x8537821b
+0,          1,          1,        1,    79360, 0x110c4343
+0,          2,          2,        1,    79360, 0xa85105bb
+0,          3,          3,        1,    79360, 0x87431836
+0,          4,          4,        1,    79360, 0x5c701720
+0,          5,          5,        1,    79360, 0x20308ce4
+0,          6,          6,        1,    79360, 0xe51d3794
+0,          7,          7,        1,    79360, 0x80e6f1e0
+0,          8,          8,        1,    79360, 0x5aff64cc
+0,          9,          9,        1,    79360, 0x1a3d9ab3
+0,         10,         10,        1,    79360, 0xe154a195
+0,         11,         11,        1,    79360, 0x608dafdc
+0,         12,         12,        1,    79360, 0x93edf73f
+0,         13,         13,        1,    79360, 0x56d97281
+0,         14,         14,        1,    79360, 0xe7a284e6
+0,         15,         15,        1,    79360, 0xd4e5e513
+0,         16,         16,        1,    79360, 0x0a952ab1
+0,         17,         17,        1,    79360, 0x3b21c91c
+0,         18,         18,        1,    79360, 0x943656cb
+0,         19,         19,        1,    79360, 0xffbdb94b
+0,         20,         20,        1,    79360, 0x74976e16