From 30a73361fa7ca18d9617ef5dbfaf8755da6c2dd9 Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Sat, 14 Mar 2020 11:37:40 +0100 Subject: avformat: add fwse demuxer --- Changelog | 1 + libavformat/Makefile | 1 + libavformat/allformats.c | 1 + libavformat/fwse.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 91 insertions(+) create mode 100644 libavformat/fwse.c diff --git a/Changelog b/Changelog index 93d20eef7d..219afbd08a 100644 --- a/Changelog +++ b/Changelog @@ -49,6 +49,7 @@ version : - Vulkan support - avgblur_vulkan, overlay_vulkan, scale_vulkan and chromaber_vulkan filters - ADPCM IMA MTF decoder +- FWSE demuxer version 4.2: diff --git a/libavformat/Makefile b/libavformat/Makefile index f84becd30a..71eeb45175 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -198,6 +198,7 @@ OBJS-$(CONFIG_FRAMEHASH_MUXER) += hashenc.o framehash.o OBJS-$(CONFIG_FRAMEMD5_MUXER) += hashenc.o framehash.o OBJS-$(CONFIG_FRM_DEMUXER) += frmdec.o OBJS-$(CONFIG_FSB_DEMUXER) += fsb.o +OBJS-$(CONFIG_FWSE_DEMUXER) += fwse.o pcm.o OBJS-$(CONFIG_GIF_MUXER) += gif.o OBJS-$(CONFIG_GIF_DEMUXER) += gifdec.o OBJS-$(CONFIG_GSM_DEMUXER) += gsmdec.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 08012ea208..d275c1017b 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -156,6 +156,7 @@ extern AVOutputFormat ff_framehash_muxer; extern AVOutputFormat ff_framemd5_muxer; extern AVInputFormat ff_frm_demuxer; extern AVInputFormat ff_fsb_demuxer; +extern AVInputFormat ff_fwse_demuxer; extern AVInputFormat ff_g722_demuxer; extern AVOutputFormat ff_g722_muxer; extern AVInputFormat ff_g723_1_demuxer; diff --git a/libavformat/fwse.c b/libavformat/fwse.c new file mode 100644 index 0000000000..00e2e13b11 --- /dev/null +++ b/libavformat/fwse.c @@ -0,0 +1,88 @@ +/* + * FWSE demuxer + * Copyright (c) 2020 Paul B Mahol + * + * 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 "libavutil/intreadwrite.h" +#include "avformat.h" +#include "internal.h" +#include "pcm.h" + +static int fwse_probe(const AVProbeData *p) +{ + if (AV_RL32(p->buf) != MKTAG('F','W','S','E')) + return 0; + if (AV_RL32(p->buf+4) != 2 && AV_RL32(p->buf+4) != 3) + return 0; + if (AV_RL32(p->buf+16) != 1 && AV_RL32(p->buf+16) != 2) + return 0; + + return AVPROBE_SCORE_MAX / 4 * 3; +} + +static int fwse_read_header(AVFormatContext *s) +{ + unsigned start_offset, version; + AVIOContext *pb = s->pb; + AVCodecParameters *par; + AVStream *st; + + avio_skip(pb, 4); + version = avio_rl32(pb); + if (version != 2 && version != 3) + return AVERROR_INVALIDDATA; + avio_skip(pb, 4); + start_offset = avio_rl32(pb); + + st = avformat_new_stream(s, NULL); + if (!st) + return AVERROR(ENOMEM); + + par = st->codecpar; + par->codec_type = AVMEDIA_TYPE_AUDIO; + par->codec_id = AV_CODEC_ID_ADPCM_IMA_MTF; + par->format = AV_SAMPLE_FMT_S16; + par->channels = avio_rl32(pb); + if (par->channels != 1 && par->channels != 2) + return AVERROR_INVALIDDATA; + if (par->channels == 1) + par->channel_layout = AV_CH_LAYOUT_MONO; + else if (par->channels == 2) + par->channel_layout = AV_CH_LAYOUT_STEREO; + st->duration = avio_rl32(pb); + par->sample_rate = avio_rl32(pb); + if (par->sample_rate <= 0 || par->sample_rate > INT_MAX) + return AVERROR_INVALIDDATA; + + par->block_align = 1; + avio_skip(pb, start_offset - avio_tell(pb)); + + avpriv_set_pts_info(st, 64, 1, par->sample_rate); + + return 0; +} + +AVInputFormat ff_fwse_demuxer = { + .name = "fwse", + .long_name = NULL_IF_CONFIG_SMALL("Capcom's MT Framework sound"), + .read_probe = fwse_probe, + .read_header = fwse_read_header, + .read_packet = ff_pcm_read_packet, + .extensions = "fwse", +}; -- cgit v1.2.3