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e37f161e66
* qatar/master: (71 commits) movenc: Allow writing to a non-seekable output if using empty moov movenc: Support adding isml (smooth streaming live) metadata libavcodec: Don't crash in avcodec_encode_audio if time_base isn't set sunrast: Document the different Sun Raster file format types. sunrast: Add a check for experimental type. libspeexenc: use AVSampleFormat instead of deprecated/removed SampleFormat lavf: remove disabled FF_API_SET_PTS_INFO cruft lavf: remove disabled FF_API_OLD_INTERRUPT_CB cruft lavf: remove disabled FF_API_REORDER_PRIVATE cruft lavf: remove disabled FF_API_SEEK_PUBLIC cruft lavf: remove disabled FF_API_STREAM_COPY cruft lavf: remove disabled FF_API_PRELOAD cruft lavf: remove disabled FF_API_NEW_STREAM cruft lavf: remove disabled FF_API_RTSP_URL_OPTIONS cruft lavf: remove disabled FF_API_MUXRATE cruft lavf: remove disabled FF_API_FILESIZE cruft lavf: remove disabled FF_API_TIMESTAMP cruft lavf: remove disabled FF_API_LOOP_OUTPUT cruft lavf: remove disabled FF_API_LOOP_INPUT cruft lavf: remove disabled FF_API_AVSTREAM_QUALITY cruft ... Conflicts: doc/APIchanges libavcodec/8bps.c libavcodec/avcodec.h libavcodec/libx264.c libavcodec/mjpegbdec.c libavcodec/options.c libavcodec/sunrast.c libavcodec/utils.c libavcodec/version.h libavcodec/x86/h264_deblock.asm libavdevice/libdc1394.c libavdevice/v4l2.c libavformat/avformat.h libavformat/avio.c libavformat/avio.h libavformat/aviobuf.c libavformat/dv.c libavformat/mov.c libavformat/utils.c libavformat/version.h libavformat/wtv.c libavutil/Makefile libavutil/file.c libswscale/x86/input.asm libswscale/x86/swscale_mmx.c libswscale/x86/swscale_template.c tests/ref/lavf/ffm Merged-by: Michael Niedermayer <michaelni@gmx.at>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/*
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* RSO demuxer
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* Copyright (c) 2001 Fabrice Bellard (original AU code)
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* Copyright (c) 2010 Rafael Carre
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#include "internal.h"
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#include "pcm.h"
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#include "riff.h"
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#include "rso.h"
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static int rso_read_header(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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int id, rate, bps;
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unsigned int size;
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enum CodecID codec;
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AVStream *st;
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id = avio_rb16(pb);
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size = avio_rb16(pb);
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rate = avio_rb16(pb);
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avio_rb16(pb); /* play mode ? (0x0000 = don't loop) */
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codec = ff_codec_get_id(ff_codec_rso_tags, id);
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if (codec == CODEC_ID_ADPCM_IMA_WAV) {
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av_log(s, AV_LOG_ERROR, "ADPCM in RSO not implemented\n");
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return AVERROR_PATCHWELCOME;
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}
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bps = av_get_bits_per_sample(codec);
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if (!bps) {
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av_log_ask_for_sample(s, "could not determine bits per sample\n");
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return AVERROR_INVALIDDATA;
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}
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/* now we are ready: build format streams */
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st = avformat_new_stream(s, NULL);
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if (!st)
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return AVERROR(ENOMEM);
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st->duration = (size * 8) / bps;
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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st->codec->codec_tag = id;
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st->codec->codec_id = codec;
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st->codec->channels = 1;
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st->codec->sample_rate = rate;
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avpriv_set_pts_info(st, 64, 1, rate);
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return 0;
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}
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#define BLOCK_SIZE 1024 /* in samples */
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static int rso_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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int bps = av_get_bits_per_sample(s->streams[0]->codec->codec_id);
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int ret = av_get_packet(s->pb, pkt, BLOCK_SIZE * bps >> 3);
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if (ret < 0)
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return ret;
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pkt->stream_index = 0;
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/* note: we need to modify the packet size here to handle the last packet */
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pkt->size = ret;
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return 0;
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}
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AVInputFormat ff_rso_demuxer = {
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.name = "rso",
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.long_name = NULL_IF_CONFIG_SMALL("Lego Mindstorms RSO format"),
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.extensions = "rso",
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.read_header = rso_read_header,
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.read_packet = rso_read_packet,
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.read_seek = pcm_read_seek,
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.codec_tag = (const AVCodecTag* const []){ff_codec_rso_tags, 0},
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};
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