* [FFmpeg-devel] [PATCH] Re-initialize stream on new metadata. (PR #20876)
@ 2025-11-09 16:36 toots via ffmpeg-devel
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From: toots via ffmpeg-devel @ 2025-11-09 16:36 UTC (permalink / raw)
To: ffmpeg-devel; +Cc: toots
PR #20876 opened by toots
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20876
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20876.patch
>From e4ae6472ff667d22826a2fb0f48e9bd8e9daa3c2 Mon Sep 17 00:00:00 2001
From: Romain Beauxis <romain.beauxis@gmail.com>
Date: Fri, 14 Mar 2025 00:27:04 -0500
Subject: [PATCH] Re-initialize stream on new metadata.
---
libavformat/oggenc.c | 38 ++++++++++++++++++++++++++++++++------
tests/fate/ogg-flac.mak | 4 ++++
tests/fate/ogg-opus.mak | 4 ++++
tests/fate/ogg-vorbis.mak | 4 ++++
4 files changed, 44 insertions(+), 6 deletions(-)
diff --git a/libavformat/oggenc.c b/libavformat/oggenc.c
index e1bb7dd972..26d9b06c6b 100644
--- a/libavformat/oggenc.c
+++ b/libavformat/oggenc.c
@@ -40,6 +40,9 @@
#define MAX_PAGE_SIZE 65025
+static int ogg_write_trailer(AVFormatContext *s);
+static void ogg_deinit(AVFormatContext *s);
+
typedef struct OGGPage {
int64_t start_granule;
int64_t granule;
@@ -66,6 +69,7 @@ typedef struct OGGStreamContext {
OGGPage page; ///< current page
unsigned serial_num; ///< serial number
int64_t last_granule; ///< last packet granule
+ int packet_written;
} OGGStreamContext;
typedef struct OGGPageList {
@@ -640,6 +644,28 @@ static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
OGGStreamContext *oggstream = st->priv_data;
int ret;
int64_t granule;
+ const uint8_t *side_metadata;
+ size_t size;
+
+ side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
+ if (side_metadata && oggstream->packet_written) {
+ if (1 < s->nb_streams) {
+ av_log(s, AV_LOG_WARNING, "Multiple streams present: cannot insert new metadata!\n");
+ } else {
+ ogg_write_trailer(s);
+ ogg_deinit(s);
+ ogg_init(s);
+
+ av_dict_free(&st->metadata);
+ ret = av_packet_unpack_dictionary(side_metadata, size, &st->metadata);
+ if (ret < 0)
+ return ret;
+
+ ogg_write_header(s);
+ }
+ }
+
+ oggstream->packet_written = 1;
if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
@@ -720,7 +746,7 @@ static int ogg_write_trailer(AVFormatContext *s)
return 0;
}
-static void ogg_free(AVFormatContext *s)
+static void ogg_deinit(AVFormatContext *s)
{
OGGContext *ogg = s->priv_data;
OGGPageList *p = ogg->page_list;
@@ -772,7 +798,7 @@ const FFOutputFormat ff_ogg_muxer = {
.write_header = ogg_write_header,
.write_packet = ogg_write_packet,
.write_trailer = ogg_write_trailer,
- .deinit = ogg_free,
+ .deinit = ogg_deinit,
.p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
.p.priv_class = &ogg_muxer_class,
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
@@ -791,7 +817,7 @@ const FFOutputFormat ff_oga_muxer = {
.write_header = ogg_write_header,
.write_packet = ogg_write_packet,
.write_trailer = ogg_write_trailer,
- .deinit = ogg_free,
+ .deinit = ogg_deinit,
.p.flags = AVFMT_TS_NEGATIVE,
.p.priv_class = &ogg_muxer_class,
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
@@ -813,7 +839,7 @@ const FFOutputFormat ff_ogv_muxer = {
.write_header = ogg_write_header,
.write_packet = ogg_write_packet,
.write_trailer = ogg_write_trailer,
- .deinit = ogg_free,
+ .deinit = ogg_deinit,
.p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
.p.priv_class = &ogg_muxer_class,
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
@@ -832,7 +858,7 @@ const FFOutputFormat ff_spx_muxer = {
.write_header = ogg_write_header,
.write_packet = ogg_write_packet,
.write_trailer = ogg_write_trailer,
- .deinit = ogg_free,
+ .deinit = ogg_deinit,
.p.flags = AVFMT_TS_NEGATIVE,
.p.priv_class = &ogg_muxer_class,
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
@@ -851,7 +877,7 @@ const FFOutputFormat ff_opus_muxer = {
.write_header = ogg_write_header,
.write_packet = ogg_write_packet,
.write_trailer = ogg_write_trailer,
- .deinit = ogg_free,
+ .deinit = ogg_deinit,
.p.flags = AVFMT_TS_NEGATIVE,
.p.priv_class = &ogg_muxer_class,
.flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
diff --git a/tests/fate/ogg-flac.mak b/tests/fate/ogg-flac.mak
index 07bdb232cb..083e99e852 100644
--- a/tests/fate/ogg-flac.mak
+++ b/tests/fate/ogg-flac.mak
@@ -2,6 +2,10 @@ FATE_OGG_FLAC += fate-ogg-flac-chained-meta
fate-ogg-flac-chained-meta: REF = $(SRC_PATH)/tests/ref/fate/ogg-flac-chained-meta.txt
fate-ogg-flac-chained-meta: CMD = run $(APITESTSDIR)/api-dump-stream-meta-test$(EXESUF) $(TARGET_SAMPLES)/ogg-flac/chained-meta.ogg
+FATE_OGG_FLAC += fate-ogg-flac-copy-chained-meta
+fate-ogg-flac-copy-chained-meta: REF = $(SRC_PATH)/tests/ref/fate/ogg-flac-chained-meta.txt
+fate-ogg-flac-copy-chained-meta: CMD = run $(FFMPEG) -nostdin -hide_banner -loglevel quiet -i ../fate-suite/ogg-flac/chained-meta.ogg -c copy -f ogg - | $(APITESTSDIR)/api-dump-stream-meta-test$(EXESUF) /dev/stdin
+
FATE_OGG_FLAC-$(call DEMDEC, OGG, FLAC, FLAC_PARSER) += $(FATE_OGG_FLAC)
FATE_SAMPLES_DUMP_STREAM_META += $(FATE_OGG_FLAC-yes)
diff --git a/tests/fate/ogg-opus.mak b/tests/fate/ogg-opus.mak
index 54b6fbabde..e75952fb67 100644
--- a/tests/fate/ogg-opus.mak
+++ b/tests/fate/ogg-opus.mak
@@ -2,6 +2,10 @@ FATE_OGG_OPUS += fate-ogg-opus-chained-meta
fate-ogg-opus-chained-meta: REF = $(SRC_PATH)/tests/ref/fate/ogg-opus-chained-meta.txt
fate-ogg-opus-chained-meta: CMD = run $(APITESTSDIR)/api-dump-stream-meta-test$(EXESUF) $(TARGET_SAMPLES)/ogg-opus/chained-meta.ogg
+FATE_OGG_OPUS += fate-ogg-opus-copy-chained-meta
+fate-ogg-opus-copy-chained-meta: REF = $(SRC_PATH)/tests/ref/fate/ogg-opus-chained-meta.txt
+fate-ogg-opus-copy-chained-meta: CMD = run $(FFMPEG) -nostdin -hide_banner -loglevel quiet -i ../fate-suite/ogg-opus/chained-meta.ogg -c copy -f ogg - | $(APITESTSDIR)/api-dump-stream-meta-test$(EXESUF) /dev/stdin
+
FATE_OGG_OPUS-$(call DEMDEC, OGG, OPUS) += $(FATE_OGG_OPUS)
FATE_SAMPLES_DUMP_STREAM_META += $(FATE_OGG_OPUS-yes)
diff --git a/tests/fate/ogg-vorbis.mak b/tests/fate/ogg-vorbis.mak
index 74805d591e..ac33783bc9 100644
--- a/tests/fate/ogg-vorbis.mak
+++ b/tests/fate/ogg-vorbis.mak
@@ -2,6 +2,10 @@ FATE_OGG_VORBIS += fate-ogg-vorbis-chained-meta
fate-ogg-vorbis-chained-meta: REF = $(SRC_PATH)/tests/ref/fate/ogg-vorbis-chained-meta.txt
fate-ogg-vorbis-chained-meta: CMD = run $(APITESTSDIR)/api-dump-stream-meta-test$(EXESUF) $(TARGET_SAMPLES)/ogg-vorbis/chained-meta.ogg
+FATE_OGG_VORBIS += fate-ogg-vorbis-copy-chained-meta
+fate-ogg-vorbis-copy-chained-meta: REF = $(SRC_PATH)/tests/ref/fate/ogg-vorbis-chained-meta.txt
+fate-ogg-vorbis-copy-chained-meta: CMD = run $(FFMPEG) -nostdin -hide_banner -loglevel quiet -i ../fate-suite/ogg-vorbis/chained-meta.ogg -c copy -f ogg - | $(APITESTSDIR)/api-dump-stream-meta-test$(EXESUF) /dev/stdin
+
FATE_OGG_VORBIS-$(call DEMDEC, OGG, VORBIS) += $(FATE_OGG_VORBIS)
FATE_SAMPLES_DUMP_STREAM_META += $(FATE_OGG_VORBIS-yes)
--
2.49.1
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2025-11-09 16:36 [FFmpeg-devel] [PATCH] Re-initialize stream on new metadata. (PR #20876) toots via ffmpeg-devel
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