On Mon, 4 Jul 2016, sebechlebsky...@gmail.com wrote:
From: Jan Sebechlebsky <sebechlebsky...@gmail.com>
Add ff_format_output_open utility function to wrap
io_open callback of AVFormatContext structure.
Signed-off-by: Jan Sebechlebsky <sebechlebsky...@gmail.com>
---
libavformat/internal.h | 10 ++++++++++
libavformat/utils.c | 10 ++++++++++
2 files changed, 20 insertions(+)
diff --git a/libavformat/internal.h b/libavformat/internal.h
index 1b44bea..0119749 100644
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -572,6 +572,16 @@ int ffio_open2_wrapper(struct AVFormatContext *s,
AVIOContext **pb, const char *
*/
#define FFERROR_REDO FFERRTAG('R','E','D','O')
+/**
+ * Utility function to open IO stream of output format.
+ *
+ * @param s AVFormatContext
+ * @param url URL or file name to open for writing
+ * @options optional options which will be passed to io_open callback
+ * @return >=0 on success, negative AVERROR in case of failure
+ */
+int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary
**options);
+
/*
* A wrapper around AVFormatContext.io_close that should be used
* instead of calling the pointer directly.
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 8c16374..d728ca3 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -5168,6 +5168,16 @@ int av_apply_bitstream_filters(AVCodecContext *codec,
AVPacket *pkt,
FF_ENABLE_DEPRECATION_WARNINGS
#endif
+int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary
**options)
+{
+ if (!s->oformat)
+ return AVERROR(EINVAL);
+
+ if (!(s->oformat->flags & AVFMT_NOFILE))
+ return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
+ return 0;
+}
+
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
{
LGTM, will apply in a few days.
Regards,
Marton
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