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 @@ |
||||
/*
|
||||
* sndio play and grab interface |
||||
* Copyright (c) 2010 Jacob Meuser |
||||
* |
||||
* This file is part of Libav. |
||||
* |
||||
* Libav 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. |
||||
* |
||||
* Libav 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 Libav; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
#ifndef AVDEVICE_SNDIO_H |
||||
#define AVDEVICE_SNDIO_H |
||||
|
||||
#include <stdint.h> |
||||
#include <sndio.h> |
||||
|
||||
#include "libavformat/avformat.h" |
||||
#include "libavutil/log.h" |
||||
|
||||
typedef struct SndioData { |
||||
AVClass *class; |
||||
struct sio_hdl *hdl; |
||||
enum AVCodecID codec_id; |
||||
int64_t hwpos; |
||||
int64_t softpos; |
||||
uint8_t *buffer; |
||||
int bps; |
||||
int buffer_size; |
||||
int buffer_offset; |
||||
int channels; |
||||
int sample_rate; |
||||
} SndioData; |
||||
|
||||
int ff_sndio_open(AVFormatContext *s1, int is_output, const char *audio_device); |
||||
int ff_sndio_close(SndioData *s); |
||||
|
||||
#endif /* AVDEVICE_SNDIO_H */ |
||||
@ -1,120 +0,0 @@ |
||||
/*
|
||||
* sndio play and grab interface |
||||
* Copyright (c) 2010 Jacob Meuser |
||||
* |
||||
* This file is part of Libav. |
||||
* |
||||
* Libav 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. |
||||
* |
||||
* Libav 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 Libav; if not, write to the Free Software |
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||||
*/ |
||||
|
||||
#include <stdint.h> |
||||
#include <sndio.h> |
||||
|
||||
#include "libavutil/internal.h" |
||||
#include "libavutil/opt.h" |
||||
#include "libavutil/time.h" |
||||
|
||||
#include "libavformat/avformat.h" |
||||
#include "libavformat/internal.h" |
||||
|
||||
#include "libavdevice/sndio.h" |
||||
|
||||
static av_cold int audio_read_header(AVFormatContext *s1) |
||||
{ |
||||
SndioData *s = s1->priv_data; |
||||
AVStream *st; |
||||
int ret; |
||||
|
||||
st = avformat_new_stream(s1, NULL); |
||||
if (!st) |
||||
return AVERROR(ENOMEM); |
||||
|
||||
ret = ff_sndio_open(s1, 0, s1->filename); |
||||
if (ret < 0) |
||||
return ret; |
||||
|
||||
/* take real parameters */ |
||||
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
||||
st->codecpar->codec_id = s->codec_id; |
||||
st->codecpar->sample_rate = s->sample_rate; |
||||
st->codecpar->channels = s->channels; |
||||
|
||||
avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static int audio_read_packet(AVFormatContext *s1, AVPacket *pkt) |
||||
{ |
||||
SndioData *s = s1->priv_data; |
||||
int64_t bdelay, cur_time; |
||||
int ret; |
||||
|
||||
if ((ret = av_new_packet(pkt, s->buffer_size)) < 0) |
||||
return ret; |
||||
|
||||
ret = sio_read(s->hdl, pkt->data, pkt->size); |
||||
if (ret == 0 || sio_eof(s->hdl)) { |
||||
av_packet_unref(pkt); |
||||
return AVERROR_EOF; |
||||
} |
||||
|
||||
pkt->size = ret; |
||||
s->softpos += ret; |
||||
|
||||
/* compute pts of the start of the packet */ |
||||
cur_time = av_gettime(); |
||||
|
||||
bdelay = ret + s->hwpos - s->softpos; |
||||
|
||||
/* convert to pts */ |
||||
pkt->pts = cur_time - ((bdelay * 1000000) / |
||||
(s->bps * s->channels * s->sample_rate)); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static av_cold int audio_read_close(AVFormatContext *s1) |
||||
{ |
||||
SndioData *s = s1->priv_data; |
||||
|
||||
ff_sndio_close(s); |
||||
|
||||
return 0; |
||||
} |
||||
|
||||
static const AVOption options[] = { |
||||
{ "sample_rate", "", offsetof(SndioData, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
||||
{ "channels", "", offsetof(SndioData, channels), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, |
||||
{ NULL }, |
||||
}; |
||||
|
||||
static const AVClass sndio_demuxer_class = { |
||||
.class_name = "sndio indev", |
||||
.item_name = av_default_item_name, |
||||
.option = options, |
||||
.version = LIBAVUTIL_VERSION_INT, |
||||
}; |
||||
|
||||
AVInputFormat ff_sndio_demuxer = { |
||||
.name = "sndio", |
||||
.long_name = NULL_IF_CONFIG_SMALL("sndio audio capture"), |
||||
.priv_data_size = sizeof(SndioData), |
||||
.read_header = audio_read_header, |
||||
.read_packet = audio_read_packet, |
||||
.read_close = audio_read_close, |
||||
.flags = AVFMT_NOFILE, |
||||
.priv_class = &sndio_demuxer_class, |
||||
}; |
||||
Loading…
Reference in new issue