mirror of https://github.com/FFmpeg/FFmpeg.git
Diego Biurrun
7 years ago
parent
8e7e042d41
commit
8d3db95f20
4 changed files with 104 additions and 174 deletions
@ -1,48 +0,0 @@ |
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/*
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* sndio play and grab interface |
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* Copyright (c) 2010 Jacob Meuser |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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#ifndef AVDEVICE_SNDIO_H |
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#define AVDEVICE_SNDIO_H |
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#include <stdint.h> |
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#include <sndio.h> |
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#include "libavformat/avformat.h" |
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#include "libavutil/log.h" |
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typedef struct SndioData { |
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AVClass *class; |
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struct sio_hdl *hdl; |
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enum AVCodecID codec_id; |
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int64_t hwpos; |
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int64_t softpos; |
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uint8_t *buffer; |
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int bps; |
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int buffer_size; |
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int buffer_offset; |
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int channels; |
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int sample_rate; |
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} SndioData; |
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int ff_sndio_open(AVFormatContext *s1, int is_output, const char *audio_device); |
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int ff_sndio_close(SndioData *s); |
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#endif /* AVDEVICE_SNDIO_H */ |
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@ -1,120 +0,0 @@ |
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/*
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* sndio play and grab interface |
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* Copyright (c) 2010 Jacob Meuser |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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 <stdint.h> |
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#include <sndio.h> |
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#include "libavutil/internal.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/time.h" |
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#include "libavformat/avformat.h" |
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#include "libavformat/internal.h" |
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#include "libavdevice/sndio.h" |
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static av_cold int audio_read_header(AVFormatContext *s1) |
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{ |
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SndioData *s = s1->priv_data; |
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AVStream *st; |
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int ret; |
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st = avformat_new_stream(s1, NULL); |
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if (!st) |
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return AVERROR(ENOMEM); |
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ret = ff_sndio_open(s1, 0, s1->filename); |
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if (ret < 0) |
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return ret; |
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/* take real parameters */ |
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st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
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st->codecpar->codec_id = s->codec_id; |
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st->codecpar->sample_rate = s->sample_rate; |
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st->codecpar->channels = s->channels; |
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avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ |
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return 0; |
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} |
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static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt) |
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{ |
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SndioData *s = s1->priv_data; |
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int64_t bdelay, cur_time; |
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int ret; |
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if ((ret = av_new_packet(pkt, s->buffer_size)) < 0) |
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return ret; |
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ret = sio_read(s->hdl, pkt->data, pkt->size); |
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if (ret == 0 || sio_eof(s->hdl)) { |
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av_packet_unref(pkt); |
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return AVERROR_EOF; |
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} |
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pkt->size = ret; |
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s->softpos += ret; |
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/* compute pts of the start of the packet */ |
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cur_time = av_gettime(); |
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bdelay = ret + s->hwpos - s->softpos; |
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/* convert to pts */ |
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pkt->pts = cur_time - ((bdelay * 1000000) / |
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(s->bps * s->channels * s->sample_rate)); |
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return 0; |
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} |
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static av_cold int audio_read_close(AVFormatContext *s1) |
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{ |
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SndioData *s = s1->priv_data; |
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ff_sndio_close(s); |
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return 0; |
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} |
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static const AVOption options[] = { |
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{ "sample_rate", "", offsetof(SndioData, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
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{ "channels", "", offsetof(SndioData, channels), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
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{ NULL }, |
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}; |
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static const AVClass sndio_demuxer_class = { |
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.class_name = "sndio indev", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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AVInputFormat ff_sndio_demuxer = { |
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.name = "sndio", |
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.long_name = NULL_IF_CONFIG_SMALL("sndio audio capture"), |
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.priv_data_size = sizeof(SndioData), |
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.read_header = audio_read_header, |
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.read_packet = audio_read_packet, |
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.read_close = audio_read_close, |
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.flags = AVFMT_NOFILE, |
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.priv_class = &sndio_demuxer_class, |
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}; |
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