On date Wednesday 2021-04-21 23:53:35 +0200, Stefano Sabatini wrote:
> On date Sunday 2021-04-18 23:30:57 +0200, Stefano Sabatini wrote:
> > 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(-)
>
> Updated against master.
Updated.
>From c4ac476c90b422ee876ee7e53ed942d693943bea Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefa...@gmail.com>
Date: Sun, 18 Apr 2021 22:49:25 +0200
Subject: [PATCH 1/3] lavf/avio: add avio_vprintf()
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 1a9f0a303e..c2612efb93 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,9 @@ libavutil: 2021-04-27
API changes, most recent first:
+2022-04-03 - xxxxxxxxxx - lavf 59.21.100 - avio.h
+ Add avio_vprintf(), similar to avio_printf() but allow to use it
+ from within a function taking a variable argument list as input.
2022-03-16 - xxxxxxxxxx - all libraries - version_major.h
Add lib<name>/version_major.h as new installed headers, which only
diff --git a/libavformat/avio.h b/libavformat/avio.h
index 3ed9175a9b..36c3d7b430 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -519,6 +519,12 @@ 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 29d4bd7510..64184978c2 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -1289,15 +1289,12 @@ 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);
@@ -1308,6 +1305,18 @@ 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 f4a26c2870..2f54f57c02 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -31,7 +31,7 @@
#include "version_major.h"
-#define LIBAVFORMAT_VERSION_MINOR 20
+#define LIBAVFORMAT_VERSION_MINOR 21
#define LIBAVFORMAT_VERSION_MICRO 101
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
--
2.25.1
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