Merge commit 'b85a5e87af4254b80913fe33591d96361f30832b'

* commit 'b85a5e87af4254b80913fe33591d96361f30832b':
  lavu: Add av_strnstr()
  h264: Allow discarding the cropping information from SPS

Conflicts:
	Changelog
	doc/APIchanges
	libavcodec/avcodec.h
	libavcodec/version.h
	libavutil/version.h

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

Changelog

@@ -9,6 +9,7 @@ version <next>:
 - Theora Midstream reconfiguration support
 - EVRC decoder
 - audio fade filter
+- av_strnstr
 
 
 version 1.1:

doc/APIchanges

@@ -135,6 +135,9 @@ API changes, most recent first:
 2012-03-26 - a67d9cf - lavfi 2.66.100
   Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
 
+2013-01-xx - xxxxxxx - lavu 52.6.0 - avstring.h
+  Add av_strnstr()
+
 2013-01-xx - xxxxxxx - lavu 52.5.0 - hmac.h
   Add AVHMAC.
 

libavcodec/avcodec.h

@@ -713,6 +713,8 @@ typedef struct RcOverride{
 #define CODEC_FLAG2_NO_OUTPUT     0x00000004 ///< Skip bitstream encoding.
 #define CODEC_FLAG2_LOCAL_HEADER  0x00000008 ///< Place global headers at every keyframe instead of in extradata.
 #define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. DEPRECATED!!!!
+#define CODEC_FLAG2_IGNORE_CROP   0x00010000 ///< Discard cropping information from SPS.
+
 #if FF_API_MPV_GLOBAL_OPTS
 #define CODEC_FLAG_CBP_RD         0x04000000 ///< Use rate distortion optimization for cbp.
 #define CODEC_FLAG_QP_RD          0x08000000 ///< Use rate distortion optimization for qp selectioon.

libavcodec/h264_ps.c

@@ -471,6 +471,20 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
         sps->crop_right = get_ue_golomb(&s->gb);
         sps->crop_top   = get_ue_golomb(&s->gb);
         sps->crop_bottom= get_ue_golomb(&s->gb);
+        if (h->s.avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
+            av_log(h->s.avctx, AV_LOG_DEBUG,
+                   "discarding sps cropping, "
+                   "original values are l:%u r:%u t:%u b:%u\n",
+                   sps->crop_left,
+                   sps->crop_right,
+                   sps->crop_top,
+                   sps->crop_bottom);
+
+            sps->crop_left   =
+            sps->crop_right  =
+            sps->crop_top    =
+            sps->crop_bottom = 0;
+        }
         if(sps->crop_left || sps->crop_top){
             av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ... (left: %d, top: %d)\n", sps->crop_left, sps->crop_top);
         }

libavcodec/options_table.h

@@ -79,6 +79,7 @@ static const AVOption options[]={
 {"sgop", "Deprecated, use mpegvideo private options instead", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_STRICT_GOP }, INT_MIN, INT_MAX, V|E, "flags2"},
 #endif
 {"noout", "skip bitstream encoding", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_NO_OUTPUT }, INT_MIN, INT_MAX, V|E, "flags2"},
+{"ignorecrop", "ignore cropping information from sps", 1, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_IGNORE_CROP }, INT_MIN, INT_MAX, V|D, "flags2"},
 {"local_header", "place global headers at every keyframe instead of in extradata", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_LOCAL_HEADER }, INT_MIN, INT_MAX, V|E, "flags2"},
 {"chunks", "Frame data might be split into multiple chunks", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_CHUNKS }, INT_MIN, INT_MAX, V|D, "flags2"},
 {"showall", "Show all frames before the first keyframe", 0, AV_OPT_TYPE_CONST, {.i64 = CODEC_FLAG2_SHOW_ALL }, INT_MIN, INT_MAX, V|D, "flags2"},

libavcodec/version.h

@@ -29,7 +29,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 54
-#define LIBAVCODEC_VERSION_MINOR 90
+#define LIBAVCODEC_VERSION_MINOR 91
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavutil/avstring.c

@@ -65,6 +65,20 @@ char *av_stristr(const char *s1, const char *s2)
     return NULL;
 }
 
+char *av_strnstr(const char *haystack, const char *needle, size_t hay_length)
+{
+    size_t needle_len = strlen(needle);
+    if (!needle_len)
+        return haystack;
+    while (hay_length >= needle_len) {
+        hay_length--;
+        if (!memcmp(haystack, needle, needle_len))
+            return haystack;
+        haystack++;
+    }
+    return NULL;
+}
+
 size_t av_strlcpy(char *dst, const char *src, size_t size)
 {
     size_t len = 0;

libavutil/avstring.h

@@ -66,6 +66,21 @@ int av_stristart(const char *str, const char *pfx, const char **ptr);
  */
 char *av_stristr(const char *haystack, const char *needle);
 
+/**
+ * Locate the first occurrence of the string needle in the string haystack
+ * where not more than hay_length characters are searched. A zero-length
+ * string needle is considered to match at the start of haystack.
+ *
+ * This function is a length-limited version of the standard strstr().
+ *
+ * @param haystack   string to search in
+ * @param needle     string to search for
+ * @param hay_length length of string to search in
+ * @return           pointer to the located match within haystack
+ *                   or a null pointer if no match
+ */
+char *av_strnstr(const char *haystack, const char *needle, size_t hay_length);
+
 /**
  * Copy the string src to dst, but no more than size - 1 bytes, and
  * null-terminate dst.

libavutil/version.h

@@ -75,8 +75,8 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  52
-#define LIBAVUTIL_VERSION_MINOR  15
-#define LIBAVUTIL_VERSION_MICRO 103
+#define LIBAVUTIL_VERSION_MINOR  16
+#define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                LIBAVUTIL_VERSION_MINOR, \