summaryrefslogtreecommitdiffstats
path: root/libavformat
diff options
context:
space:
mode:
authorLuca Barbato <lu_zero@gentoo.org>2013-09-11 14:02:06 +0200
committerMartin Storsjö <martin@martin.st>2013-09-16 22:11:08 +0300
commit596e5d4783ca951258a7c580951fd161f1785ec1 (patch)
tree9d046fe97f3869e5fb66991a39734948fb374a60 /libavformat
parent0a9425d7cfdf0113c3d32096c9406823efe0cd0a (diff)
downloadffmpeg-streaming-596e5d4783ca951258a7c580951fd161f1785ec1.zip
ffmpeg-streaming-596e5d4783ca951258a7c580951fd161f1785ec1.tar.gz
lavf: Add a flag to enable/disable per-packet flushing
This is enabled by default and can be disabled with "-fflags -flush_packets". Inspired by a patch from Nicolas George <nicolas.george@normalesup.org>. Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavformat')
-rw-r--r--libavformat/avformat.h1
-rw-r--r--libavformat/mux.c8
-rw-r--r--libavformat/options_table.h3
-rw-r--r--libavformat/version.h2
4 files changed, 11 insertions, 3 deletions
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 12462c8..ce7a2f8 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -894,6 +894,7 @@ typedef struct AVFormatContext {
#define AVFMT_FLAG_NOBUFFER 0x0040 ///< Do not buffer frames when possible
#define AVFMT_FLAG_CUSTOM_IO 0x0080 ///< The caller has supplied a custom AVIOContext, don't avio_close() it.
#define AVFMT_FLAG_DISCARD_CORRUPT 0x0100 ///< Discard frames marked corrupted
+#define AVFMT_FLAG_FLUSH_PACKETS 0x0200 ///< Flush the AVIOContext every packet.
/**
* decoding: size of data to probe; encoding: unused.
diff --git a/libavformat/mux.c b/libavformat/mux.c
index 5a08dd6..505ed2e 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -404,6 +404,7 @@ static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt)
static int write_packet(AVFormatContext *s, AVPacket *pkt)
{
+ int ret;
if (!(s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS))) {
AVRational time_base = s->streams[pkt->stream_index]->time_base;
int64_t offset = 0;
@@ -420,7 +421,12 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
if (pkt->pts != AV_NOPTS_VALUE)
pkt->pts += offset;
}
- return s->oformat->write_packet(s, pkt);
+ ret = s->oformat->write_packet(s, pkt);
+
+ if (s->pb && ret >= 0 && s->flags & AVFMT_FLAG_FLUSH_PACKETS)
+ avio_flush(s->pb);
+
+ return ret;
}
int av_write_frame(AVFormatContext *s, AVPacket *pkt)
diff --git a/libavformat/options_table.h b/libavformat/options_table.h
index 273c589..54bf25f 100644
--- a/libavformat/options_table.h
+++ b/libavformat/options_table.h
@@ -33,7 +33,8 @@
static const AVOption avformat_options[] = {
{"probesize", "set probing size", OFFSET(probesize), AV_OPT_TYPE_INT, {.i64 = 5000000 }, 32, INT_MAX, D},
{"packetsize", "set packet size", OFFSET(packet_size), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, INT_MAX, E},
-{"fflags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = DEFAULT }, INT_MIN, INT_MAX, D|E, "fflags"},
+{"fflags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = AVFMT_FLAG_FLUSH_PACKETS }, INT_MIN, INT_MAX, D|E, "fflags"},
+{"flush_packets", "reduce the latency by flushing out packets immediately", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_FLUSH_PACKETS }, INT_MIN, INT_MAX, D, "fflags"},
{"ignidx", "ignore index", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_IGNIDX }, INT_MIN, INT_MAX, D, "fflags"},
{"genpts", "generate pts", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_GENPTS }, INT_MIN, INT_MAX, D, "fflags"},
{"nofillin", "do not fill in missing values that can be exactly calculated", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_NOFILLIN }, INT_MIN, INT_MAX, D, "fflags"},
diff --git a/libavformat/version.h b/libavformat/version.h
index ac675ce..38c959f 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVFORMAT_VERSION_MAJOR 55
-#define LIBAVFORMAT_VERSION_MINOR 3
+#define LIBAVFORMAT_VERSION_MINOR 4
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
OpenPOWER on IntegriCloud