From: Romain Beauxis <romain.beauxis@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Romain Beauxis <romain.beauxis@gmail.com>
Subject: [FFmpeg-devel] [PATCH v3 2/2] ogg/{vorbis, flac, opus}: Remove header packets from subsequent ogg streams from the demuxer output.
Date: Sat, 3 May 2025 12:03:29 -0500
Message-ID: <20250503170329.46135-3-romain.beauxis@gmail.com> (raw)
In-Reply-To: <20250503170329.46135-1-romain.beauxis@gmail.com>
---
libavformat/oggdec.c | 4 ----
libavformat/oggparseflac.c | 28 ++++++++++++++++++++--
libavformat/oggparseopus.c | 11 +++++++++
libavformat/oggparsevorbis.c | 11 +++++++--
tests/ref/fate/ogg-flac-chained-meta.txt | 2 --
tests/ref/fate/ogg-opus-chained-meta.txt | 1 -
tests/ref/fate/ogg-vorbis-chained-meta.txt | 3 ---
7 files changed, 46 insertions(+), 14 deletions(-)
diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 9baf8040a9..5557eb4a14 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -239,10 +239,6 @@ static int ogg_replace_stream(AVFormatContext *s, uint32_t serial, char *magic,
os->start_trimming = 0;
os->end_trimming = 0;
- /* Chained files have extradata as a new packet */
- if (codec == &ff_opus_codec)
- os->header = -1;
-
return i;
}
diff --git a/libavformat/oggparseflac.c b/libavformat/oggparseflac.c
index f25ed9cc15..d66b85b09e 100644
--- a/libavformat/oggparseflac.c
+++ b/libavformat/oggparseflac.c
@@ -27,6 +27,8 @@
#include "oggdec.h"
#define OGG_FLAC_METADATA_TYPE_STREAMINFO 0x7F
+#define OGG_FLAC_MAGIC "\177FLAC"
+#define OGG_FLAC_MAGIC_SIZE sizeof(OGG_FLAC_MAGIC)-1
static int
flac_header (AVFormatContext * s, int idx)
@@ -78,6 +80,27 @@ flac_header (AVFormatContext * s, int idx)
return 1;
}
+static int
+flac_packet (AVFormatContext * s, int idx)
+{
+ struct ogg *ogg = s->priv_data;
+ struct ogg_stream *os = ogg->streams + idx;
+
+ if (os->psize > OGG_FLAC_MAGIC_SIZE &&
+ !memcmp(
+ os->buf + os->pstart,
+ OGG_FLAC_MAGIC,
+ OGG_FLAC_MAGIC_SIZE))
+ return 1;
+
+ if (os->psize > 0 &&
+ ((os->buf[os->pstart] & 0x7F) == FLAC_METADATA_TYPE_VORBIS_COMMENT)) {
+ return 1;
+ }
+
+ return 0;
+}
+
static int
old_flac_header (AVFormatContext * s, int idx)
{
@@ -127,10 +150,11 @@ fail:
}
const struct ogg_codec ff_flac_codec = {
- .magic = "\177FLAC",
- .magicsize = 5,
+ .magic = OGG_FLAC_MAGIC,
+ .magicsize = OGG_FLAC_MAGIC_SIZE,
.header = flac_header,
.nb_header = 2,
+ .packet = flac_packet,
};
const struct ogg_codec ff_old_flac_codec = {
diff --git a/libavformat/oggparseopus.c b/libavformat/oggparseopus.c
index 218e9df581..f54a9711df 100644
--- a/libavformat/oggparseopus.c
+++ b/libavformat/oggparseopus.c
@@ -125,6 +125,17 @@ static int opus_packet(AVFormatContext *avf, int idx)
return AVERROR_INVALIDDATA;
}
+ if (os->psize > 8 && !memcmp(packet, "OpusHead", 8)) {
+ if ((ret = ff_alloc_extradata(st->codecpar, os->psize)) < 0)
+ return ret;
+
+ memcpy(st->codecpar->extradata, packet, os->psize);
+ return 1;
+ }
+
+ if (os->psize > 8 && !memcmp(packet, "OpusTags", 8))
+ return 1;
+
if ((!os->lastpts || os->lastpts == AV_NOPTS_VALUE) && !(os->flags & OGG_FLAG_EOS)) {
int seg, d;
int duration;
diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
index 9f50ab9ffc..8b4ae872d2 100644
--- a/libavformat/oggparsevorbis.c
+++ b/libavformat/oggparsevorbis.c
@@ -418,6 +418,7 @@ static int vorbis_packet(AVFormatContext *s, int idx)
struct ogg_stream *os = ogg->streams + idx;
struct oggvorbis_private *priv = os->private;
int duration, flags = 0;
+ int skip_packet = 0;
if (!priv->vp)
return AVERROR_INVALIDDATA;
@@ -480,7 +481,13 @@ static int vorbis_packet(AVFormatContext *s, int idx)
if (duration < 0) {
os->pflags |= AV_PKT_FLAG_CORRUPT;
return 0;
- } else if (flags & VORBIS_FLAG_COMMENT) {
+ }
+
+ if (flags &
+ (VORBIS_FLAG_HEADER | VORBIS_FLAG_COMMENT | VORBIS_FLAG_SETUP))
+ skip_packet = 1;
+
+ if (flags & VORBIS_FLAG_COMMENT) {
vorbis_update_metadata(s, idx);
flags = 0;
}
@@ -505,7 +512,7 @@ static int vorbis_packet(AVFormatContext *s, int idx)
priv->final_duration += os->pduration;
}
- return 0;
+ return skip_packet;
}
const struct ogg_codec ff_vorbis_codec = {
diff --git a/tests/ref/fate/ogg-flac-chained-meta.txt b/tests/ref/fate/ogg-flac-chained-meta.txt
index ad20ba935f..28e22aa29e 100644
--- a/tests/ref/fate/ogg-flac-chained-meta.txt
+++ b/tests/ref/fate/ogg-flac-chained-meta.txt
@@ -5,8 +5,6 @@ Stream ID: 0, frame PTS: 0, metadata: N/A
Stream ID: 0, packet PTS: 4608, packet DTS: 4608
Stream ID: 0, frame PTS: 4608, metadata: N/A
Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
Stream ID: 0, frame PTS: 0, metadata: N/A
Stream ID: 0, packet PTS: 4608, packet DTS: 4608
Stream ID: 0, frame PTS: 4608, metadata: N/A
diff --git a/tests/ref/fate/ogg-opus-chained-meta.txt b/tests/ref/fate/ogg-opus-chained-meta.txt
index fc84b8b703..addc41c1eb 100644
--- a/tests/ref/fate/ogg-opus-chained-meta.txt
+++ b/tests/ref/fate/ogg-opus-chained-meta.txt
@@ -13,7 +13,6 @@ Stream ID: 0, frame PTS: 3528, metadata: N/A
Stream ID: 0, packet PTS: 4488, packet DTS: 4488
Stream ID: 0, frame PTS: 4488, metadata: N/A
Stream ID: 0, packet PTS: -312, packet DTS: -312
-Stream ID: 0, new metadata: encoder=Lavc61.19.100 libopus;Lavc61.19.100 libopus:title=First Stream;Second Stream
Stream ID: 0, frame PTS: -312, metadata: N/A
Stream ID: 0, packet PTS: 648, packet DTS: 648
Stream ID: 0, frame PTS: 648, metadata: N/A
diff --git a/tests/ref/fate/ogg-vorbis-chained-meta.txt b/tests/ref/fate/ogg-vorbis-chained-meta.txt
index b7a97c90e2..1206f86c1f 100644
--- a/tests/ref/fate/ogg-vorbis-chained-meta.txt
+++ b/tests/ref/fate/ogg-vorbis-chained-meta.txt
@@ -6,10 +6,7 @@ Stream ID: 0, frame PTS: 128, metadata: N/A
Stream ID: 0, packet PTS: 704, packet DTS: 704
Stream ID: 0, frame PTS: 704, metadata: N/A
Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
Stream ID: 0, new metadata: encoder=Lavc61.19.100 libvorbis:title=Second Stream
-Stream ID: 0, packet PTS: 0, packet DTS: 0
-Stream ID: 0, packet PTS: 0, packet DTS: 0
Stream ID: 0, frame PTS: 0, metadata: N/A
Stream ID: 0, packet PTS: 128, packet DTS: 128
Stream ID: 0, frame PTS: 128, metadata: N/A
--
2.39.5 (Apple Git-154)
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prev parent reply other threads:[~2025-05-03 17:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-03 17:03 [FFmpeg-devel] [PATCH v3 0/2] Remove chained ogg stream header packets from demuxer Romain Beauxis
2025-05-03 17:03 ` [FFmpeg-devel] [PATCH v3 1/2] libavformat/oggdec.c: Changing the packet() callback API/Return value Romain Beauxis
2025-05-04 14:04 ` Michael Niedermayer
2025-05-04 16:42 ` Romain Beauxis
2025-05-04 22:23 ` Michael Niedermayer
2025-05-06 14:20 ` Romain Beauxis
2025-05-03 17:03 ` Romain Beauxis [this message]
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