diff options
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/Makefile | 1 | ||||
| -rw-r--r-- | libavformat/allformats.c | 1 | ||||
| -rw-r--r-- | libavformat/dcstr.c | 81 | ||||
| -rw-r--r-- | libavformat/version.h | 2 |
4 files changed, 84 insertions, 1 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile index c3d9e18bf1..27aefcb280 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -127,6 +127,7 @@ OBJS-$(CONFIG_DATA_MUXER) += rawdec.o OBJS-$(CONFIG_DASH_MUXER) += dashenc.o isom.o OBJS-$(CONFIG_DAUD_DEMUXER) += dauddec.o OBJS-$(CONFIG_DAUD_MUXER) += daudenc.o +OBJS-$(CONFIG_DCSTR_DEMUXER) += dcstr.o OBJS-$(CONFIG_DFA_DEMUXER) += dfa.o OBJS-$(CONFIG_DIRAC_DEMUXER) += diracdec.o rawdec.o OBJS-$(CONFIG_DIRAC_MUXER) += rawenc.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index a67a226890..fc42cb725e 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -109,6 +109,7 @@ void av_register_all(void) REGISTER_MUXER (DASH, dash); REGISTER_MUXDEMUX(DATA, data); REGISTER_MUXDEMUX(DAUD, daud); + REGISTER_DEMUXER (DCSTR, dcstr); REGISTER_DEMUXER (DFA, dfa); REGISTER_MUXDEMUX(DIRAC, dirac); REGISTER_MUXDEMUX(DNXHD, dnxhd); diff --git a/libavformat/dcstr.c b/libavformat/dcstr.c new file mode 100644 index 0000000000..2ae61dec85 --- /dev/null +++ b/libavformat/dcstr.c @@ -0,0 +1,81 @@ +/* + * DC STR 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 "avformat.h" +#include "internal.h" + +static int dcstr_probe(AVProbeData *p) +{ + if (p->buf_size < 224 || memcmp(p->buf + 213, "Sega Stream", 11)) + return 0; + + return AVPROBE_SCORE_MAX; +} + +static int dcstr_read_header(AVFormatContext *s) +{ + unsigned codec, align; + AVStream *st; + + st = avformat_new_stream(s, NULL); + if (!st) + return AVERROR(ENOMEM); + + st->codec->codec_type = AVMEDIA_TYPE_AUDIO; + st->codec->channels = avio_rl32(s->pb); + st->codec->sample_rate = avio_rl32(s->pb); + codec = avio_rl32(s->pb); + align = avio_rl32(s->pb); + avio_skip(s->pb, 4); + st->duration = avio_rl32(s->pb); + st->codec->channels *= avio_rl32(s->pb); + if (!align || align > INT_MAX / st->codec->channels) + return AVERROR_INVALIDDATA; + st->codec->block_align = align * st->codec->channels; + + switch (codec) { + case 4: st->codec->codec_id = AV_CODEC_ID_ADPCM_AICA; break; + case 16: st->codec->codec_id = AV_CODEC_ID_PCM_S16LE_PLANAR; break; + default: avpriv_request_sample(s, "codec %X", codec); + return AVERROR_PATCHWELCOME; + } + + avio_skip(s->pb, 0x800 - avio_tell(s->pb)); + avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); + + return 0; +} + +static int dcstr_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + AVCodecContext *codec = s->streams[0]->codec; + return av_get_packet(s->pb, pkt, codec->block_align); +} + +AVInputFormat ff_dcstr_demuxer = { + .name = "dcstr", + .long_name = NULL_IF_CONFIG_SMALL("Sega DC STR"), + .read_probe = dcstr_probe, + .read_header = dcstr_read_header, + .read_packet = dcstr_read_packet, + .extensions = "str", + .flags = AVFMT_GENERIC_INDEX | AVFMT_NO_BYTE_SEEK | AVFMT_NOBINSEARCH, +}; diff --git a/libavformat/version.h b/libavformat/version.h index d4ba0cef78..45d9589ff3 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 12 +#define LIBAVFORMAT_VERSION_MINOR 13 #define LIBAVFORMAT_VERSION_MICRO 100 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ |