--- libavformat/Makefile | 1 + libavformat/allformats.c | 1 + libavformat/g728dec.c | 58 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 60 insertions(+) create mode 100644 libavformat/g728dec.c
diff --git a/libavformat/Makefile b/libavformat/Makefile index 074efc118a..e6a99a19fd 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -243,6 +243,7 @@ OBJS-$(CONFIG_G726_DEMUXER) += g726.o OBJS-$(CONFIG_G726_MUXER) += rawenc.o OBJS-$(CONFIG_G726LE_DEMUXER) += g726.o OBJS-$(CONFIG_G726LE_MUXER) += rawenc.o +OBJS-$(CONFIG_G728_DEMUXER) += g728dec.o OBJS-$(CONFIG_G729_DEMUXER) += g729dec.o OBJS-$(CONFIG_GDV_DEMUXER) += gdv.o OBJS-$(CONFIG_GENH_DEMUXER) += genh.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 445f13f42a..00dc3ab988 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -191,6 +191,7 @@ extern const FFInputFormat ff_g726_demuxer; extern const FFOutputFormat ff_g726_muxer; extern const FFInputFormat ff_g726le_demuxer; extern const FFOutputFormat ff_g726le_muxer; +extern const FFInputFormat ff_g728_demuxer; extern const FFInputFormat ff_g729_demuxer; extern const FFInputFormat ff_gdv_demuxer; extern const FFInputFormat ff_genh_demuxer; diff --git a/libavformat/g728dec.c b/libavformat/g728dec.c new file mode 100644 index 0000000000..dbf5e64d05 --- /dev/null +++ b/libavformat/g728dec.c @@ -0,0 +1,58 @@ +/* + * G.728 raw demuxer + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "avformat.h" +#include "demux.h" +#include "internal.h" + +static int g728_read_header(AVFormatContext *s) +{ + AVStream *st = avformat_new_stream(s, NULL); + if (!st) + return AVERROR(ENOMEM); + + st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; + st->codecpar->codec_id = ffifmt(s->iformat)->raw_codec_id; + st->codecpar->sample_rate = 8000; + st->codecpar->bit_rate = 16000; + st->codecpar->block_align = 5; + st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO; + avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); + + return 0; +} + +static int g728_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + int ret = av_get_packet(s->pb, pkt, 1020); // a size similar to RAW_PACKET_SIZE divisible by 5 + pkt->flags &= ~AV_PKT_FLAG_CORRUPT; + pkt->duration = (pkt->size / 5) * 20; + return ret; +} + +const FFInputFormat ff_g728_demuxer = { + .p.name = "g728", + .p.long_name = NULL_IF_CONFIG_SMALL("raw G.728"), + .p.extensions = "g728", + .p.flags = AVFMT_GENERIC_INDEX, + .read_header = g728_read_header, + .read_packet = g728_read_packet, + .raw_codec_id = AV_CODEC_ID_G728, +}; -- 2.45.2 -- Peter (A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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