diff options
author | Paul B Mahol <onemda@gmail.com> | 2015-10-19 14:42:56 +0200 |
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committer | Paul B Mahol <onemda@gmail.com> | 2015-11-21 21:03:51 +0100 |
commit | 8b1bc2b075dd7ace77dc718c7ef26829f35ec091 (patch) | |
tree | b034fe144ebb20d1e890a2d0c55b69b50a329fa8 /libavformat | |
parent | 401c93ddb76fb213b858ad722c83cdb4a510dc52 (diff) | |
download | ffmpeg-8b1bc2b075dd7ace77dc718c7ef26829f35ec091.tar.gz |
avformat: add FSB demuxer
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'libavformat')
-rw-r--r-- | libavformat/Makefile | 1 | ||||
-rw-r--r-- | libavformat/allformats.c | 1 | ||||
-rw-r--r-- | libavformat/fsb.c | 210 | ||||
-rw-r--r-- | libavformat/version.h | 2 |
4 files changed, 213 insertions, 1 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile index 64764fe672..ddc4c3db17 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -170,6 +170,7 @@ OBJS-$(CONFIG_FOURXM_DEMUXER) += 4xm.o OBJS-$(CONFIG_FRAMECRC_MUXER) += framecrcenc.o framehash.o OBJS-$(CONFIG_FRAMEMD5_MUXER) += md5enc.o framehash.o OBJS-$(CONFIG_FRM_DEMUXER) += frmdec.o +OBJS-$(CONFIG_FSB_DEMUXER) += fsb.o OBJS-$(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 02f59eed6d..dabfa34acd 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -138,6 +138,7 @@ void av_register_all(void) REGISTER_MUXER (FRAMECRC, framecrc); REGISTER_MUXER (FRAMEMD5, framemd5); REGISTER_DEMUXER (FRM, frm); + REGISTER_DEMUXER (FSB, fsb); REGISTER_MUXDEMUX(G722, g722); REGISTER_MUXDEMUX(G723_1, g723_1); REGISTER_DEMUXER (G729, g729); diff --git a/libavformat/fsb.c b/libavformat/fsb.c new file mode 100644 index 0000000000..2837c1919d --- /dev/null +++ b/libavformat/fsb.c @@ -0,0 +1,210 @@ +/* + * FSB demuxer + * Copyright (c) 2015 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/avassert.h" +#include "libavutil/intreadwrite.h" +#include "avformat.h" +#include "avio.h" +#include "internal.h" + +static int fsb_probe(AVProbeData *p) +{ + if (memcmp(p->buf, "FSB", 3) || p->buf[3] - '0' < 1 || p->buf[3] - '0' > 5) + return 0; + if (AV_RL32(p->buf + 4) != 1) + return 0; + return AVPROBE_SCORE_MAX; +} + +static int fsb_read_header(AVFormatContext *s) +{ + AVIOContext *pb = s->pb; + unsigned format, version, c; + int64_t offset; + AVCodecContext *codec; + AVStream *st = avformat_new_stream(s, NULL); + + avio_skip(pb, 3); // "FSB" + version = avio_r8(pb) - '0'; + if (version != 4 && version != 3) { + avpriv_request_sample(s, "version %d", version); + return AVERROR_PATCHWELCOME; + } + + avio_skip(pb, 4); + + if (!st) + return AVERROR(ENOMEM); + codec = st->codec; + codec->codec_type = AVMEDIA_TYPE_AUDIO; + codec->codec_tag = 0; + + if (version == 3) { + offset = avio_rl32(pb) + 0x18; + avio_skip(pb, 44); + st->duration = avio_rl32(pb); + avio_skip(pb, 12); + format = avio_rl32(pb); + codec->sample_rate = avio_rl32(pb); + if (codec->sample_rate <= 0) + return AVERROR_INVALIDDATA; + avio_skip(pb, 6); + codec->channels = avio_rl16(pb); + if (!codec->channels) + return AVERROR_INVALIDDATA; + + if (format & 0x00000100) { + codec->codec_id = AV_CODEC_ID_PCM_S16LE; + codec->block_align = 4096 * codec->channels; + } else if (format & 0x00400000) { + codec->bits_per_coded_sample = 4; + codec->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV; + codec->block_align = 36 * codec->channels; + } else if (format & 0x00800000) { + codec->codec_id = AV_CODEC_ID_ADPCM_PSX; + codec->block_align = 16 * codec->channels; + } else if (format & 0x02000000) { + codec->codec_id = AV_CODEC_ID_ADPCM_THP; + codec->block_align = 8 * codec->channels; + if (codec->channels > INT_MAX / 32) + return AVERROR_INVALIDDATA; + ff_alloc_extradata(codec, 32 * codec->channels); + if (!codec->extradata) + return AVERROR(ENOMEM); + avio_seek(pb, 0x68, SEEK_SET); + for (c = 0; c < codec->channels; c++) { + avio_read(pb, codec->extradata + 32 * c, 32); + avio_skip(pb, 14); + } + } else { + avpriv_request_sample(s, "format 0x%X", format); + return AVERROR_PATCHWELCOME; + } + } else if (version == 4) { + offset = avio_rl32(pb) + 0x30; + avio_skip(pb, 80); + st->duration = avio_rl32(pb); + + format = avio_rb32(pb); + switch(format) { + case 0x40001001: + case 0x00001005: + case 0x40001081: + case 0x40200001: + codec->codec_id = AV_CODEC_ID_XMA2; + break; + case 0x40000802: + codec->codec_id = AV_CODEC_ID_ADPCM_THP; + break; + default: + avpriv_request_sample(s, "format 0x%X", format); + return AVERROR_PATCHWELCOME; + } + + codec->sample_rate = avio_rl32(pb); + if (codec->sample_rate <= 0) + return AVERROR_INVALIDDATA; + avio_skip(pb, 6); + + codec->channels = avio_rl16(pb); + if (!codec->channels) + return AVERROR_INVALIDDATA; + + switch (codec->codec_id) { + case AV_CODEC_ID_XMA2: + ff_alloc_extradata(codec, 34); + if (!codec->extradata) + return AVERROR(ENOMEM); + memset(codec->extradata, 0, 34); + codec->block_align = 2048; + break; + case AV_CODEC_ID_ADPCM_THP: + if (codec->channels > INT_MAX / 32) + return AVERROR_INVALIDDATA; + ff_alloc_extradata(codec, 32 * codec->channels); + if (!codec->extradata) + return AVERROR(ENOMEM); + avio_seek(pb, 0x80, SEEK_SET); + for (c = 0; c < codec->channels; c++) { + avio_read(pb, codec->extradata + 32 * c, 32); + avio_skip(pb, 14); + } + codec->block_align = 8 * codec->channels; + break; + } + } else { + av_assert0(0); + } + + avio_skip(pb, offset - avio_tell(pb)); + s->internal->data_offset = avio_tell(pb); + + avpriv_set_pts_info(st, 64, 1, codec->sample_rate); + + return 0; +} + +static int fsb_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + AVCodecContext *codec = s->streams[0]->codec; + int64_t pos; + int ret; + + if (avio_feof(s->pb)) + return AVERROR_EOF; + + pos = avio_tell(s->pb); + if (codec->codec_id == AV_CODEC_ID_ADPCM_THP && + codec->channels > 1) { + int i, ch; + + ret = av_new_packet(pkt, codec->block_align); + if (ret < 0) + return ret; + for (i = 0; i < 4; i++) { + for (ch = 0; ch < codec->channels; ch++) { + pkt->data[ch * 8 + i * 2 + 0] = avio_r8(s->pb); + pkt->data[ch * 8 + i * 2 + 1] = avio_r8(s->pb); + } + } + ret = 0; + } else { + ret = av_get_packet(s->pb, pkt, codec->block_align); + } + + if (codec->codec_id == AV_CODEC_ID_XMA2 && pkt->size >= 1) + pkt->duration = (pkt->data[0] >> 2) * 512; + + pkt->pos = pos; + pkt->stream_index = 0; + + return ret; +} + +AVInputFormat ff_fsb_demuxer = { + .name = "fsb", + .long_name = NULL_IF_CONFIG_SMALL("FMOD Sample Bank"), + .read_probe = fsb_probe, + .read_header = fsb_read_header, + .read_packet = fsb_read_packet, + .extensions = "fsb", + .flags = AVFMT_GENERIC_INDEX, +}; diff --git a/libavformat/version.h b/libavformat/version.h index 22af345f0f..5a2f3f072d 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -30,7 +30,7 @@ #include "libavutil/version.h" #define LIBAVFORMAT_VERSION_MAJOR 57 -#define LIBAVFORMAT_VERSION_MINOR 17 +#define LIBAVFORMAT_VERSION_MINOR 18 #define LIBAVFORMAT_VERSION_MICRO 100 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ |