This new function makes it possible to use avio_printf() functionality from
a function taking a variable list of arguments.
---
doc/APIchanges | 3 +++
libavformat/avio.h | 6 ++++++
libavformat/aviobuf.c | 17 +++++++++++++----
libavformat/version.h | 2 +-
4 files changed, 23 insertions(+), 5 deletions(-)
diff --git a/doc/APIchanges b/doc/APIchanges
index b41dadee8d..08fec7c234 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil: 2017-10-21
API changes, most recent first:
+2021-04-18 - xxxxxxxxxx - lavf 58.78.100 - avio.h
+ Add avio_vprintf(), similar to avio_printf().
+
2021-03-21 - xxxxxxxxxx - lavu 56.72.100 - frame.h
Deprecated av_get_colorspace_name().
Use av_color_space_name() instead.
diff --git a/libavformat/avio.h b/libavformat/avio.h
index d022820a6e..24f6839522 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -571,6 +571,12 @@ int64_t avio_size(AVIOContext *s);
*/
int avio_feof(AVIOContext *s);
+/**
+ * Writes a formatted string to the context taking a va_list.
+ * @return number of bytes written, < 0 on error.
+ */
+int avio_vprintf(AVIOContext *s, const char *fmt, va_list ap);
+
/**
* Writes a formatted string to the context.
* @return number of bytes written, < 0 on error.
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 518cb11129..289da796c8 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -1196,15 +1196,12 @@ int avio_closep(AVIOContext **s)
return ret;
}
-int avio_printf(AVIOContext *s, const char *fmt, ...)
+int avio_vprintf(AVIOContext *s, const char *fmt, va_list ap)
{
- va_list ap;
AVBPrint bp;
av_bprint_init(&bp, 0, INT_MAX);
- va_start(ap, fmt);
av_vbprintf(&bp, fmt, ap);
- va_end(ap);
if (!av_bprint_is_complete(&bp)) {
av_bprint_finalize(&bp, NULL);
s->error = AVERROR(ENOMEM);
@@ -1215,6 +1212,18 @@ int avio_printf(AVIOContext *s, const char *fmt, ...)
return bp.len;
}
+int avio_printf(AVIOContext *s, const char *fmt, ...)
+{
+ va_list ap;
+ int ret;
+
+ va_start(ap, fmt);
+ ret = avio_vprintf(s, fmt, ap);
+ va_end(ap);
+
+ return ret;
+}
+
void avio_print_string_array(AVIOContext *s, const char *strings[])
{
for(; *strings; strings++)
diff --git a/libavformat/version.h b/libavformat/version.h
index ced5600034..b6023f9d2e 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -32,7 +32,7 @@
// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 58
-#define LIBAVFORMAT_VERSION_MINOR 77
+#define LIBAVFORMAT_VERSION_MINOR 78
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
--
2.25.1
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