diff options
Diffstat (limited to 'libavformat/rsd.c')
| -rw-r--r-- | libavformat/rsd.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/libavformat/rsd.c b/libavformat/rsd.c new file mode 100644 index 0000000000..dd1f3723d0 --- /dev/null +++ b/libavformat/rsd.c @@ -0,0 +1,221 @@ +/* + * RSD demuxer + * Copyright (c) 2013 James Almer + * + * 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 "libavcodec/bytestream.h" +#include "libavutil/intreadwrite.h" +#include "avformat.h" +#include "avio.h" +#include "internal.h" + +static const AVCodecTag rsd_tags[] = { + { AV_CODEC_ID_ADPCM_PSX, MKTAG('V','A','G',' ') }, + { AV_CODEC_ID_ADPCM_THP_LE, MKTAG('G','A','D','P') }, + { AV_CODEC_ID_ADPCM_THP, MKTAG('W','A','D','P') }, + { AV_CODEC_ID_ADPCM_IMA_RAD, MKTAG('R','A','D','P') }, + { AV_CODEC_ID_ADPCM_IMA_WAV, MKTAG('X','A','D','P') }, + { AV_CODEC_ID_PCM_S16BE, MKTAG('P','C','M','B') }, + { AV_CODEC_ID_PCM_S16LE, MKTAG('P','C','M',' ') }, + { AV_CODEC_ID_XMA2, MKTAG('X','M','A',' ') }, + { AV_CODEC_ID_NONE, 0 }, +}; + +static const uint32_t rsd_unsupported_tags[] = { + MKTAG('O','G','G',' '), +}; + +static int rsd_probe(AVProbeData *p) +{ + if (memcmp(p->buf, "RSD", 3) || p->buf[3] - '0' < 2 || p->buf[3] - '0' > 6) + return 0; + if (AV_RL32(p->buf + 8) > 256 || !AV_RL32(p->buf + 8)) + return AVPROBE_SCORE_MAX / 8; + if (AV_RL32(p->buf + 16) > 8*48000 || !AV_RL32(p->buf + 16)) + return AVPROBE_SCORE_MAX / 8; + return AVPROBE_SCORE_MAX; +} + +static int rsd_read_header(AVFormatContext *s) +{ + AVIOContext *pb = s->pb; + int i, ret, version, start = 0x800; + AVCodecContext *codec; + AVStream *st = avformat_new_stream(s, NULL); + + if (!st) + return AVERROR(ENOMEM); + + avio_skip(pb, 3); // "RSD" + version = avio_r8(pb) - '0'; + + codec = st->codec; + codec->codec_type = AVMEDIA_TYPE_AUDIO; + codec->codec_tag = avio_rl32(pb); + codec->codec_id = ff_codec_get_id(rsd_tags, codec->codec_tag); + if (!codec->codec_id) { + char tag_buf[32]; + + av_get_codec_tag_string(tag_buf, sizeof(tag_buf), codec->codec_tag); + for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) { + if (codec->codec_tag == rsd_unsupported_tags[i]) { + avpriv_request_sample(s, "Codec tag: %s", tag_buf); + return AVERROR_PATCHWELCOME; + } + } + av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf); + return AVERROR_INVALIDDATA; + } + + codec->channels = avio_rl32(pb); + if (!codec->channels) + return AVERROR_INVALIDDATA; + + avio_skip(pb, 4); // Bit depth + codec->sample_rate = avio_rl32(pb); + if (!codec->sample_rate) + return AVERROR_INVALIDDATA; + + avio_skip(pb, 4); // Unknown + + switch (codec->codec_id) { + case AV_CODEC_ID_XMA2: + codec->block_align = 2048; + ff_alloc_extradata(codec, 34); + if (!codec->extradata) + return AVERROR(ENOMEM); + memset(codec->extradata, 0, 34); + break; + case AV_CODEC_ID_ADPCM_PSX: + codec->block_align = 16 * codec->channels; + if (pb->seekable) + st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start); + break; + case AV_CODEC_ID_ADPCM_IMA_RAD: + codec->block_align = 20 * codec->channels; + if (pb->seekable) + st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start); + break; + case AV_CODEC_ID_ADPCM_IMA_WAV: + if (version == 2) + start = avio_rl32(pb); + + codec->bits_per_coded_sample = 4; + codec->block_align = 36 * codec->channels; + if (pb->seekable) + st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start); + break; + case AV_CODEC_ID_ADPCM_THP_LE: + /* RSD3GADP is mono, so only alloc enough memory + to store the coeff table for a single channel. */ + + start = avio_rl32(pb); + + if ((ret = ff_get_extradata(codec, s->pb, 32)) < 0) + return ret; + if (pb->seekable) + st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start); + break; + case AV_CODEC_ID_ADPCM_THP: + codec->block_align = 8 * codec->channels; + avio_skip(s->pb, 0x1A4 - avio_tell(s->pb)); + + if ((ret = ff_alloc_extradata(st->codec, 32 * st->codec->channels)) < 0) + return ret; + + for (i = 0; i < st->codec->channels; i++) { + avio_read(s->pb, st->codec->extradata + 32 * i, 32); + avio_skip(s->pb, 8); + } + if (pb->seekable) + st->duration = (avio_size(pb) - start) / (8 * st->codec->channels) * 14; + break; + case AV_CODEC_ID_PCM_S16LE: + case AV_CODEC_ID_PCM_S16BE: + if (version != 4) + start = avio_rl32(pb); + + if (pb->seekable) + st->duration = (avio_size(pb) - start) / 2 / codec->channels; + break; + } + + avio_skip(pb, start - avio_tell(pb)); + if (codec->codec_id == AV_CODEC_ID_XMA2) { + avio_skip(pb, avio_rb32(pb) + avio_rb32(pb)); + st->duration = avio_rb32(pb); + } + + avpriv_set_pts_info(st, 64, 1, codec->sample_rate); + + return 0; +} + +static int rsd_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + AVCodecContext *codec = s->streams[0]->codec; + int ret, size = 1024; + int64_t pos; + + if (avio_feof(s->pb)) + return AVERROR_EOF; + + pos = avio_tell(s->pb); + if (codec->codec_id == AV_CODEC_ID_ADPCM_IMA_RAD || + codec->codec_id == AV_CODEC_ID_ADPCM_PSX || + codec->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV || + codec->codec_id == AV_CODEC_ID_XMA2) { + ret = av_get_packet(s->pb, pkt, codec->block_align); + } else if (codec->codec_tag == MKTAG('W','A','D','P') && + 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, size); + } + + 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_rsd_demuxer = { + .name = "rsd", + .long_name = NULL_IF_CONFIG_SMALL("GameCube RSD"), + .read_probe = rsd_probe, + .read_header = rsd_read_header, + .read_packet = rsd_read_packet, + .extensions = "rsd", + .codec_tag = (const AVCodecTag* const []){rsd_tags, 0}, + .flags = AVFMT_GENERIC_INDEX, +}; |