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authorMichael Niedermayer <michaelni@gmx.at>2014-05-29 01:09:51 +0200
committerMichael Niedermayer <michaelni@gmx.at>2014-05-29 01:13:59 +0200
commita8499cbbe87d00456c391f41207e1981bd7f746a (patch)
treefdfc491b412384196ec02fcf305db586a92d2c83 /libavformat/nutenc.c
parentd858ee717bed6307b8e772bd5039ab001aeae03f (diff)
parentc94e2e85cb6af8a570d8542a830556243bd32873 (diff)
downloadffmpeg-a8499cbbe87d00456c391f41207e1981bd7f746a.tar.gz
Merge commit 'c94e2e85cb6af8a570d8542a830556243bd32873'
* commit 'c94e2e85cb6af8a570d8542a830556243bd32873': nut: Support experimental NUT 4 features Conflicts: doc/nut.texi libavformat/nut.h libavformat/nutdec.c libavformat/nutenc.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat/nutenc.c')
-rw-r--r--libavformat/nutenc.c45
1 files changed, 42 insertions, 3 deletions
diff --git a/libavformat/nutenc.c b/libavformat/nutenc.c
index 8c371586ee..237b501d8c 100644
--- a/libavformat/nutenc.c
+++ b/libavformat/nutenc.c
@@ -26,6 +26,8 @@
#include "libavutil/tree.h"
#include "libavutil/dict.h"
#include "libavutil/avassert.h"
+#include "libavutil/time.h"
+#include "libavutil/opt.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/mpegaudiodata.h"
#include "nut.h"
@@ -338,7 +340,7 @@ static void write_mainheader(NUTContext *nut, AVIOContext *bc)
tmp_head_idx;
int64_t tmp_match;
- ff_put_v(bc, nut->version = NUT_VERSION);
+ ff_put_v(bc, nut->version);
if (nut->version > 3)
ff_put_v(bc, nut->minor_version);
ff_put_v(bc, nut->avf->nb_streams);
@@ -407,6 +409,9 @@ static void write_mainheader(NUTContext *nut, AVIOContext *bc)
ff_put_v(bc, nut->header_len[i]);
avio_write(bc, nut->header[i], nut->header_len[i]);
}
+ // flags had been effectively introduced in version 4
+ if (nut->version > NUT_STABLE_VERSION)
+ ff_put_v(bc, nut->flags);
}
static int write_streamheader(AVFormatContext *avctx, AVIOContext *bc,
@@ -692,6 +697,16 @@ static int nut_write_header(AVFormatContext *s)
nut->avf = s;
+ nut->version = NUT_STABLE_VERSION + !!nut->flags;
+ if (nut->flags && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+ av_log(s, AV_LOG_ERROR,
+ "The additional syncpoint modes require version %d, "
+ "that is currently not finalized, "
+ "please set -f_strict experimental in order to enable it.\n",
+ nut->version);
+ return AVERROR_EXPERIMENTAL;
+ }
+
nut->stream = av_calloc(s->nb_streams, sizeof(*nut->stream ));
nut->chapter = av_calloc(s->nb_chapters, sizeof(*nut->chapter));
nut->time_base= av_calloc(s->nb_streams +
@@ -974,7 +989,8 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
//FIXME: Ensure store_sp is 1 in the first place.
- if (store_sp) {
+ if (store_sp &&
+ (!(nut->flags & NUT_PIPE) || nut->last_syncpoint_pos == INT_MIN)) {
Syncpoint *sp, dummy = { .pos = INT64_MAX };
ff_nut_reset_ts(nut, *nus->time_base, pkt->dts);
@@ -1000,6 +1016,11 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
return ret;
put_tt(nut, nus->time_base, dyn_bc, pkt->dts);
ff_put_v(dyn_bc, sp ? (nut->last_syncpoint_pos - sp->pos) >> 4 : 0);
+
+ if (nut->flags & NUT_BROADCAST) {
+ put_tt(nut, nus->time_base, dyn_bc,
+ av_rescale_q(av_gettime(), AV_TIME_BASE_Q, *nus->time_base));
+ }
put_packet(nut, bc, dyn_bc, 1, SYNCPOINT_STARTCODE);
if ((ret = ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts)) < 0)
@@ -1110,7 +1131,7 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
nus->last_pts = pkt->pts;
//FIXME just store one per syncpoint
- if (flags & FLAG_KEY) {
+ if (flags & FLAG_KEY && !(nut->flags & NUT_PIPE)) {
av_add_index_entry(
s->streams[pkt->stream_index],
nut->last_syncpoint_pos,
@@ -1156,6 +1177,23 @@ static int nut_write_trailer(AVFormatContext *s)
return 0;
}
+#define OFFSET(x) offsetof(NUTContext, x)
+#define E AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "syncpoints", "NUT syncpoint behaviour", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, INT_MIN, INT_MAX, E, "syncpoints" },
+ { "default", "", 0, AV_OPT_TYPE_CONST, {.i64 = 0}, INT_MIN, INT_MAX, E, "syncpoints" },
+ { "none", "Disable syncpoints, low overhead and unseekable", 0, AV_OPT_TYPE_CONST, {.i64 = NUT_PIPE}, INT_MIN, INT_MAX, E, "syncpoints" },
+ { "timestamped", "Extend syncpoints with a wallclock timestamp", 0, AV_OPT_TYPE_CONST, {.i64 = NUT_BROADCAST}, INT_MIN, INT_MAX, E, "syncpoints" },
+ { NULL },
+};
+
+static const AVClass class = {
+ .class_name = "nutenc",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
AVOutputFormat ff_nut_muxer = {
.name = "nut",
.long_name = NULL_IF_CONFIG_SMALL("NUT"),
@@ -1170,4 +1208,5 @@ AVOutputFormat ff_nut_muxer = {
.write_trailer = nut_write_trailer,
.flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS,
.codec_tag = ff_nut_codec_tags,
+ .priv_class = &class,
};