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.
>From bbc53082dcd0e6d8344c3ee39b9f97e964a70bcd Mon Sep 17 00:00:00 2001
From: Stefano Sabatini <stefa...@gmail.com>
Date: Sun, 18 Apr 2021 22:49:25 +0200
Subject: [PATCH 1/2] 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 | 4 ++++
libavformat/avio.h | 6 ++++++
libavformat/aviobuf.c | 17 +++++++++++++----
libavformat/version.h | 2 +-
4 files changed, 24 insertions(+), 5 deletions(-)
diff --git a/doc/APIchanges b/doc/APIchanges
index cd3ea3c865..c3e351c443 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -14,6 +14,10 @@ libavutil: 2017-10-21
API changes, most recent first:
+2021-04-22 - xxxxxxxxxx - lavf 58.79.100 - 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.
+
2021-04-17 - xxxxxxxxxx - lavu 56.73.100 - frame.h detection_bbox.h
Add AV_FRAME_DATA_DETECTION_BBOXES
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 66068d4d56..c77d500192 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 78
+#define LIBAVFORMAT_VERSION_MINOR 79
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
--
2.25.1
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