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Diffstat (limited to 'contrib/ffmpeg/libavformat/sol.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/sol.c | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/contrib/ffmpeg/libavformat/sol.c b/contrib/ffmpeg/libavformat/sol.c deleted file mode 100644 index 951ec6eb9..000000000 --- a/contrib/ffmpeg/libavformat/sol.c +++ /dev/null @@ -1,160 +0,0 @@ -/* - * Sierra SOL demuxer - * Copyright Konstantin Shishkov. - * - * 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 - */ - -/* - * Based on documents from Game Audio Player and own research - */ - -#include "avformat.h" -#include "allformats.h" -#include "riff.h" -#include "bswap.h" - -/* if we don't know the size in advance */ -#define AU_UNKNOWN_SIZE ((uint32_t)(~0)) - -static int sol_probe(AVProbeData *p) -{ - /* check file header */ - uint16_t magic; - if (p->buf_size <= 14) - return 0; - magic=le2me_16(*((uint16_t*)p->buf)); - if ((magic == 0x0B8D || magic == 0x0C0D || magic == 0x0C8D) && - p->buf[2] == 'S' && p->buf[3] == 'O' && - p->buf[4] == 'L' && p->buf[5] == 0) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -#define SOL_DPCM 1 -#define SOL_16BIT 4 -#define SOL_STEREO 16 - -static int sol_codec_id(int magic, int type) -{ - if (magic == 0x0B8D) - { - if (type & SOL_DPCM) return CODEC_ID_SOL_DPCM; - else return CODEC_ID_PCM_U8; - } - if (type & SOL_DPCM) - { - if (type & SOL_16BIT) return CODEC_ID_SOL_DPCM; - else if (magic == 0x0C8D) return CODEC_ID_SOL_DPCM; - else return CODEC_ID_SOL_DPCM; - } - if (type & SOL_16BIT) return CODEC_ID_PCM_S16LE; - return CODEC_ID_PCM_U8; -} - -static int sol_codec_type(int magic, int type) -{ - if (magic == 0x0B8D) return 1;//SOL_DPCM_OLD; - if (type & SOL_DPCM) - { - if (type & SOL_16BIT) return 3;//SOL_DPCM_NEW16; - else if (magic == 0x0C8D) return 1;//SOL_DPCM_OLD; - else return 2;//SOL_DPCM_NEW8; - } - return -1; -} - -static int sol_channels(int magic, int type) -{ - if (magic == 0x0B8D || !(type & SOL_STEREO)) return 1; - return 2; -} - -static int sol_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - int size; - unsigned int magic,tag; - ByteIOContext *pb = &s->pb; - unsigned int id, codec, channels, rate, type; - AVStream *st; - - /* check ".snd" header */ - magic = get_le16(pb); - tag = get_le32(pb); - if (tag != MKTAG('S', 'O', 'L', 0)) - return -1; - rate = get_le16(pb); - type = get_byte(pb); - size = get_le32(pb); - if (magic != 0x0B8D) - get_byte(pb); /* newer SOLs contain padding byte */ - - codec = sol_codec_id(magic, type); - channels = sol_channels(magic, type); - - if (codec == CODEC_ID_SOL_DPCM) - id = sol_codec_type(magic, type); - else id = 0; - - /* now we are ready: build format streams */ - st = av_new_stream(s, 0); - if (!st) - return -1; - st->codec->codec_type = CODEC_TYPE_AUDIO; - st->codec->codec_tag = id; - st->codec->codec_id = codec; - st->codec->channels = channels; - st->codec->sample_rate = rate; - av_set_pts_info(st, 64, 1, rate); - return 0; -} - -#define MAX_SIZE 4096 - -static int sol_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - int ret; - - if (url_feof(&s->pb)) - return AVERROR(EIO); - ret= av_get_packet(&s->pb, pkt, MAX_SIZE); - pkt->stream_index = 0; - - /* note: we need to modify the packet size here to handle the last - packet */ - pkt->size = ret; - return 0; -} - -static int sol_read_close(AVFormatContext *s) -{ - return 0; -} - -AVInputFormat sol_demuxer = { - "sol", - "Sierra SOL Format", - 0, - sol_probe, - sol_read_header, - sol_read_packet, - sol_read_close, - pcm_read_seek, -}; |