| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * MSF demuxer | ||
| 3 | * Copyright (c) 2015 Paul B Mahol | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "libavutil/intreadwrite.h" | ||
| 23 | #include "avformat.h" | ||
| 24 | #include "demux.h" | ||
| 25 | #include "internal.h" | ||
| 26 | |||
| 27 | typedef struct MSFDemuxContext { | ||
| 28 | int packet_size; | ||
| 29 | } MSFDemuxContext; | ||
| 30 | |||
| 31 | 8356 | static int msf_probe(const AVProbeData *p) | |
| 32 | { | ||
| 33 |
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8356 | if (memcmp(p->buf, "MSF", 3)) |
| 34 | 8356 | return 0; | |
| 35 | |||
| 36 | ✗ | if (AV_RB32(p->buf+8) <= 0) | |
| 37 | ✗ | return 0; | |
| 38 | |||
| 39 | ✗ | if (AV_RB32(p->buf+16) <= 0) | |
| 40 | ✗ | return 0; | |
| 41 | |||
| 42 | ✗ | if (AV_RB32(p->buf+4) > 16) | |
| 43 | ✗ | return AVPROBE_SCORE_MAX / 5; //unsupported / unknown codec | |
| 44 | |||
| 45 | ✗ | return AVPROBE_SCORE_MAX / 3 * 2; | |
| 46 | } | ||
| 47 | |||
| 48 | ✗ | static int msf_read_header(AVFormatContext *s) | |
| 49 | { | ||
| 50 | ✗ | MSFDemuxContext *msf = s->priv_data; | |
| 51 | unsigned codec, size; | ||
| 52 | AVStream *st; | ||
| 53 | int ret; | ||
| 54 | |||
| 55 | ✗ | avio_skip(s->pb, 4); | |
| 56 | |||
| 57 | ✗ | st = avformat_new_stream(s, NULL); | |
| 58 | ✗ | if (!st) | |
| 59 | ✗ | return AVERROR(ENOMEM); | |
| 60 | |||
| 61 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 62 | ✗ | codec = avio_rb32(s->pb); | |
| 63 | ✗ | st->codecpar->ch_layout.nb_channels = avio_rb32(s->pb); | |
| 64 | ✗ | if (st->codecpar->ch_layout.nb_channels <= 0 || | |
| 65 | ✗ | st->codecpar->ch_layout.nb_channels >= INT_MAX / 1024) | |
| 66 | ✗ | return AVERROR_INVALIDDATA; | |
| 67 | ✗ | size = avio_rb32(s->pb); | |
| 68 | ✗ | st->codecpar->sample_rate = avio_rb32(s->pb); | |
| 69 | ✗ | if (st->codecpar->sample_rate <= 0) | |
| 70 | ✗ | return AVERROR_INVALIDDATA; | |
| 71 | // avio_rb32(s->pb); /* byte flags with encoder info */ | ||
| 72 | ✗ | switch (codec) { | |
| 73 | ✗ | case 0: st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE; break; | |
| 74 | ✗ | case 1: st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; break; | |
| 75 | ✗ | case 3: st->codecpar->block_align = 16 * st->codecpar->ch_layout.nb_channels; | |
| 76 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_ADPCM_PSX; break; | |
| 77 | ✗ | case 4: | |
| 78 | case 5: | ||
| 79 | ✗ | case 6: st->codecpar->block_align = (codec == 4 ? 96 : codec == 5 ? 152 : 192) * st->codecpar->ch_layout.nb_channels; | |
| 80 | ✗ | if (st->codecpar->ch_layout.nb_channels > UINT16_MAX / 2048) | |
| 81 | ✗ | return AVERROR_INVALIDDATA; | |
| 82 | ✗ | ret = ff_alloc_extradata(st->codecpar, 14); | |
| 83 | ✗ | if (ret < 0) | |
| 84 | ✗ | return ret; | |
| 85 | ✗ | memset(st->codecpar->extradata, 0, st->codecpar->extradata_size); | |
| 86 | ✗ | AV_WL16(st->codecpar->extradata, 1); /* version */ | |
| 87 | ✗ | AV_WL16(st->codecpar->extradata+2, 2048 * st->codecpar->ch_layout.nb_channels); /* unknown size */ | |
| 88 | ✗ | AV_WL16(st->codecpar->extradata+6, codec == 4 ? 1 : 0); /* joint stereo */ | |
| 89 | ✗ | AV_WL16(st->codecpar->extradata+8, codec == 4 ? 1 : 0); /* joint stereo (repeat?) */ | |
| 90 | ✗ | AV_WL16(st->codecpar->extradata+10, 1); | |
| 91 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_ATRAC3; break; | |
| 92 | ✗ | case 7: ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL_RAW; | |
| 93 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_MP3; break; | |
| 94 | ✗ | default: | |
| 95 | ✗ | avpriv_request_sample(s, "Codec %d", codec); | |
| 96 | ✗ | return AVERROR_PATCHWELCOME; | |
| 97 | } | ||
| 98 | ✗ | msf->packet_size = st->codecpar->block_align ? st->codecpar->block_align | |
| 99 | ✗ | : 1024 * st->codecpar->ch_layout.nb_channels; | |
| 100 | ✗ | st->duration = av_get_audio_frame_duration2(st->codecpar, size); | |
| 101 | ✗ | avio_skip(s->pb, 0x40 - avio_tell(s->pb)); | |
| 102 | ✗ | avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); | |
| 103 | |||
| 104 | ✗ | return 0; | |
| 105 | } | ||
| 106 | |||
| 107 | ✗ | static int msf_read_packet(AVFormatContext *s, AVPacket *pkt) | |
| 108 | { | ||
| 109 | ✗ | MSFDemuxContext *msf = s->priv_data; | |
| 110 | |||
| 111 | ✗ | return av_get_packet(s->pb, pkt, msf->packet_size); | |
| 112 | } | ||
| 113 | |||
| 114 | const FFInputFormat ff_msf_demuxer = { | ||
| 115 | .p.name = "msf", | ||
| 116 | .p.long_name = NULL_IF_CONFIG_SMALL("Sony PS3 MSF"), | ||
| 117 | .p.extensions = "msf", | ||
| 118 | .priv_data_size = sizeof(MSFDemuxContext), | ||
| 119 | .read_probe = msf_probe, | ||
| 120 | .read_header = msf_read_header, | ||
| 121 | .read_packet = msf_read_packet, | ||
| 122 | }; | ||
| 123 |