lavu/bprint: add append buffer function

Signed-off-by: Lukasz Marek <[email protected]> Reveiwed-by: Nicolas George <[email protected]> Signed-off-by: Michael Niedermayer <[email protected]>
zhengxj91 · Aug 30, 2013 · 0b46d6f · 0b46d6f
1 parent 6e1b1a2
commit 0b46d6f
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Showing 3 changed files with 28 additions and 1 deletion.
diff --git a/libavutil/bprint.c b/libavutil/bprint.c
@@ -155,6 +155,24 @@ void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
  av_bprint_grow(buf, n);
 }
 
+void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
+{
+ unsigned room, real_n;
+
+ while (1) {
+ room = av_bprint_room(buf);
+ if (size < room)
+ break;
+ if (av_bprint_alloc(buf, size))
+ break;
+ }
+ if (room) {
+ real_n = FFMIN(size, room - 1);
+ memcpy(buf->str + buf->len, data, real_n);
+ }
+ av_bprint_grow(buf, size);
+}
+
 void av_bprint_strftime(AVBPrint *buf, const char *fmt, const struct tm *tm)
 {
  unsigned room;

diff --git a/libavutil/bprint.h b/libavutil/bprint.h
@@ -133,6 +133,15 @@ void av_vbprintf(AVBPrint *buf, const char *fmt, va_list vl_arg);
  */
 void av_bprint_chars(AVBPrint *buf, char c, unsigned n);
 
+/**
+ * Append data to a print buffer.
+ *
+ * param buf bprint buffer to use
+ * param data pointer to data
+ * param size size of data
+ */
+void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size);
+
 struct tm;
 /**
  * Append a formatted date and time to a print buffer.

diff --git a/libavutil/version.h b/libavutil/version.h
@@ -75,7 +75,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR 52
-#define LIBAVUTIL_VERSION_MINOR 42
+#define LIBAVUTIL_VERSION_MINOR 43
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \