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Diffstat (limited to 'contrib/ffmpeg/libavformat/au.c')
| -rw-r--r-- | contrib/ffmpeg/libavformat/au.c | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/contrib/ffmpeg/libavformat/au.c b/contrib/ffmpeg/libavformat/au.c deleted file mode 100644 index 9e84c9d31..000000000 --- a/contrib/ffmpeg/libavformat/au.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * AU muxer and demuxer - * Copyright (c) 2001 Fabrice Bellard. - * - * 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 - */ - -/* - * First version by Francois Revol revol@free.fr - * - * Reference documents: - * http://www.opengroup.org/public/pubs/external/auformat.html - * http://www.goice.co.jp/member/mo/formats/au.html - */ - -#include "avformat.h" -#include "allformats.h" -#include "riff.h" - -/* if we don't know the size in advance */ -#define AU_UNKNOWN_SIZE ((uint32_t)(~0)) - -/* The ffmpeg codecs we support, and the IDs they have in the file */ -static const AVCodecTag codec_au_tags[] = { - { CODEC_ID_PCM_MULAW, 1 }, - { CODEC_ID_PCM_S16BE, 3 }, - { CODEC_ID_PCM_ALAW, 27 }, - { 0, 0 }, -}; - -#ifdef CONFIG_MUXERS -/* AUDIO_FILE header */ -static int put_au_header(ByteIOContext *pb, AVCodecContext *enc) -{ - if(!enc->codec_tag) - return -1; - put_tag(pb, ".snd"); /* magic number */ - put_be32(pb, 24); /* header size */ - put_be32(pb, AU_UNKNOWN_SIZE); /* data size */ - put_be32(pb, (uint32_t)enc->codec_tag); /* codec ID */ - put_be32(pb, enc->sample_rate); - put_be32(pb, (uint32_t)enc->channels); - return 0; -} - -static int au_write_header(AVFormatContext *s) -{ - ByteIOContext *pb = &s->pb; - - s->priv_data = NULL; - - /* format header */ - if (put_au_header(pb, s->streams[0]->codec) < 0) { - return -1; - } - - put_flush_packet(pb); - - return 0; -} - -static int au_write_packet(AVFormatContext *s, AVPacket *pkt) -{ - ByteIOContext *pb = &s->pb; - put_buffer(pb, pkt->data, pkt->size); - return 0; -} - -static int au_write_trailer(AVFormatContext *s) -{ - ByteIOContext *pb = &s->pb; - offset_t file_size; - - if (!url_is_streamed(&s->pb)) { - - /* update file size */ - file_size = url_ftell(pb); - url_fseek(pb, 8, SEEK_SET); - put_be32(pb, (uint32_t)(file_size - 24)); - url_fseek(pb, file_size, SEEK_SET); - - put_flush_packet(pb); - } - - return 0; -} -#endif //CONFIG_MUXERS - -static int au_probe(AVProbeData *p) -{ - /* check file header */ - if (p->buf_size <= 24) - return 0; - if (p->buf[0] == '.' && p->buf[1] == 's' && - p->buf[2] == 'n' && p->buf[3] == 'd') - return AVPROBE_SCORE_MAX; - else - return 0; -} - -/* au input */ -static int au_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - int size; - unsigned int tag; - ByteIOContext *pb = &s->pb; - unsigned int id, codec, channels, rate; - AVStream *st; - - /* check ".snd" header */ - tag = get_le32(pb); - if (tag != MKTAG('.', 's', 'n', 'd')) - return -1; - size = get_be32(pb); /* header size */ - get_be32(pb); /* data size */ - - id = get_be32(pb); - rate = get_be32(pb); - channels = get_be32(pb); - - codec = codec_get_id(codec_au_tags, id); - - if (size >= 24) { - /* skip unused data */ - url_fseek(pb, size - 24, SEEK_CUR); - } - - /* 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 au_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - int ret; - - if (url_feof(&s->pb)) - return AVERROR_IO; - ret= av_get_packet(&s->pb, pkt, MAX_SIZE); - if (ret < 0) - return AVERROR_IO; - 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 au_read_close(AVFormatContext *s) -{ - return 0; -} - -#ifdef CONFIG_AU_DEMUXER -AVInputFormat au_demuxer = { - "au", - "SUN AU Format", - 0, - au_probe, - au_read_header, - au_read_packet, - au_read_close, - pcm_read_seek, - .codec_tag= (const AVCodecTag*[]){codec_au_tags, 0}, -}; -#endif - -#ifdef CONFIG_AU_MUXER -AVOutputFormat au_muxer = { - "au", - "SUN AU Format", - "audio/basic", - "au", - 0, - CODEC_ID_PCM_S16BE, - CODEC_ID_NONE, - au_write_header, - au_write_packet, - au_write_trailer, - .codec_tag= (const AVCodecTag*[]){codec_au_tags, 0}, -}; -#endif //CONFIG_AU_MUXER |