Hi!
The existing amr demuxer does not allow reading streams, it requires
the 3GPP-conforming file header.
Attached patch allows reading amrnb and amrwb from (live) streams,
fixes ticket #6678.
Please comment, Carl Eugen
From 1b548fbd47f521d0c2a7b443ac2b1f2925e8bb41 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceffm...@gmail.com>
Date: Wed, 27 Sep 2017 18:04:39 +0200
Subject: [PATCH] lavf/amr: Add amrnb and amrwb demuxers.
Fixes ticket #6678.
---
libavformat/Makefile | 2 ++
libavformat/allformats.c | 2 ++
libavformat/amr.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++
libavformat/version.h | 4 ++--
4 files changed, 60 insertions(+), 2 deletions(-)
diff --git a/libavformat/Makefile b/libavformat/Makefile
index df709c29..c4c8713 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -87,6 +87,8 @@ OBJS-$(CONFIG_AIFF_MUXER) += aiffenc.o id3v2enc.o
OBJS-$(CONFIG_AIX_DEMUXER) += aixdec.o
OBJS-$(CONFIG_AMR_DEMUXER) += amr.o
OBJS-$(CONFIG_AMR_MUXER) += amr.o
+OBJS-$(CONFIG_AMRNB_DEMUXER) += amr.o
+OBJS-$(CONFIG_AMRWB_DEMUXER) += amr.o
OBJS-$(CONFIG_ANM_DEMUXER) += anm.o
OBJS-$(CONFIG_APC_DEMUXER) += apc.o
OBJS-$(CONFIG_APE_DEMUXER) += ape.o apetag.o img2.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 405ddb5..dc8984e 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -63,6 +63,8 @@ static void register_all(void)
REGISTER_MUXDEMUX(AIFF, aiff);
REGISTER_DEMUXER (AIX, aix);
REGISTER_MUXDEMUX(AMR, amr);
+ REGISTER_DEMUXER (AMRNB, amrnb);
+ REGISTER_DEMUXER (AMRWB, amrwb);
REGISTER_DEMUXER (ANM, anm);
REGISTER_DEMUXER (APC, apc);
REGISTER_DEMUXER (APE, ape);
diff --git a/libavformat/amr.c b/libavformat/amr.c
index b5194a2..07f2315 100644
--- a/libavformat/amr.c
+++ b/libavformat/amr.c
@@ -176,6 +176,60 @@ AVInputFormat ff_amr_demuxer = {
};
#endif
+#if CONFIG_AMRNB_DEMUXER
+static int amrnb_read_header(AVFormatContext *s)
+{
+ AVStream *st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codecpar->codec_tag = MKTAG('s', 'a', 'm', 'r');
+ st->codecpar->codec_id = AV_CODEC_ID_AMR_NB;
+ st->codecpar->sample_rate = 8000;
+ st->codecpar->channels = 1;
+ st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ avpriv_set_pts_info(st, 64, 1, 8000);
+
+ return 0;
+}
+
+AVInputFormat ff_amrnb_demuxer = {
+ .name = "amrnb",
+ .long_name = NULL_IF_CONFIG_SMALL("raw AMR-NB"),
+ .priv_data_size = sizeof(AMRContext),
+ .read_header = amrnb_read_header,
+ .read_packet = amr_read_packet,
+ .flags = AVFMT_GENERIC_INDEX,
+};
+#endif
+
+#if CONFIG_AMRWB_DEMUXER
+static int amrwb_read_header(AVFormatContext *s)
+{
+ AVStream *st = avformat_new_stream(s, NULL);
+ if (!st)
+ return AVERROR(ENOMEM);
+ st->codecpar->codec_tag = MKTAG('s', 'a', 'w', 'b');
+ st->codecpar->codec_id = AV_CODEC_ID_AMR_WB;
+ st->codecpar->sample_rate = 16000;
+ st->codecpar->channels = 1;
+ st->codecpar->channel_layout = AV_CH_LAYOUT_MONO;
+ st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
+ avpriv_set_pts_info(st, 64, 1, 16000);
+
+ return 0;
+}
+
+AVInputFormat ff_amrwb_demuxer = {
+ .name = "amrwb",
+ .long_name = NULL_IF_CONFIG_SMALL("raw AMR-WB"),
+ .priv_data_size = sizeof(AMRContext),
+ .read_header = amrwb_read_header,
+ .read_packet = amr_read_packet,
+ .flags = AVFMT_GENERIC_INDEX,
+};
+#endif
+
#if CONFIG_AMR_MUXER
AVOutputFormat ff_amr_muxer = {
.name = "amr",
diff --git a/libavformat/version.h b/libavformat/version.h
index ac6edf7..878917d 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -32,8 +32,8 @@
// Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium)
// Also please add any ticket numbers that you believe might be affected here
#define LIBAVFORMAT_VERSION_MAJOR 57
-#define LIBAVFORMAT_VERSION_MINOR 82
-#define LIBAVFORMAT_VERSION_MICRO 102
+#define LIBAVFORMAT_VERSION_MINOR 83
+#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
LIBAVFORMAT_VERSION_MINOR, \
--
1.7.10.4
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