mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-30 19:32:13 +00:00
b1b58310d0
* commit '8d26c193fb42d08602ac93ece039d4718d029adc': avdevice: Apply a more consistent file naming scheme Conflicts: libavdevice/Makefile libavdevice/alsa.h libavdevice/alsa_dec.c libavdevice/alsa_enc.c libavdevice/sndio_enc.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*
|
|
* sndio play and grab interface
|
|
* Copyright (c) 2010 Jacob Meuser
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
#include <sndio.h>
|
|
|
|
#include "avdevice.h"
|
|
|
|
#include "libavdevice/sndio.h"
|
|
|
|
static inline void movecb(void *addr, int delta)
|
|
{
|
|
SndioData *s = addr;
|
|
|
|
s->hwpos += delta * s->channels * s->bps;
|
|
}
|
|
|
|
av_cold int ff_sndio_open(AVFormatContext *s1, int is_output,
|
|
const char *audio_device)
|
|
{
|
|
SndioData *s = s1->priv_data;
|
|
struct sio_hdl *hdl;
|
|
struct sio_par par;
|
|
|
|
hdl = sio_open(audio_device, is_output ? SIO_PLAY : SIO_REC, 0);
|
|
if (!hdl) {
|
|
av_log(s1, AV_LOG_ERROR, "Could not open sndio device\n");
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
sio_initpar(&par);
|
|
|
|
par.bits = 16;
|
|
par.sig = 1;
|
|
par.le = SIO_LE_NATIVE;
|
|
|
|
if (is_output)
|
|
par.pchan = s->channels;
|
|
else
|
|
par.rchan = s->channels;
|
|
par.rate = s->sample_rate;
|
|
|
|
if (!sio_setpar(hdl, &par) || !sio_getpar(hdl, &par)) {
|
|
av_log(s1, AV_LOG_ERROR, "Impossible to set sndio parameters, "
|
|
"channels: %d sample rate: %d\n", s->channels, s->sample_rate);
|
|
goto fail;
|
|
}
|
|
|
|
if (par.bits != 16 || par.sig != 1 ||
|
|
(is_output && (par.pchan != s->channels)) ||
|
|
(!is_output && (par.rchan != s->channels)) ||
|
|
(par.rate != s->sample_rate)) {
|
|
av_log(s1, AV_LOG_ERROR, "Could not set appropriate sndio parameters, "
|
|
"channels: %d sample rate: %d\n", s->channels, s->sample_rate);
|
|
goto fail;
|
|
}
|
|
|
|
s->buffer_size = par.round * par.bps *
|
|
(is_output ? par.pchan : par.rchan);
|
|
|
|
if (is_output) {
|
|
s->buffer = av_malloc(s->buffer_size);
|
|
if (!s->buffer) {
|
|
av_log(s1, AV_LOG_ERROR, "Could not allocate buffer\n");
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
s->codec_id = par.le ? AV_CODEC_ID_PCM_S16LE : AV_CODEC_ID_PCM_S16BE;
|
|
s->channels = is_output ? par.pchan : par.rchan;
|
|
s->sample_rate = par.rate;
|
|
s->bps = par.bps;
|
|
|
|
sio_onmove(hdl, movecb, s);
|
|
|
|
if (!sio_start(hdl)) {
|
|
av_log(s1, AV_LOG_ERROR, "Could not start sndio\n");
|
|
goto fail;
|
|
}
|
|
|
|
s->hdl = hdl;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
av_freep(&s->buffer);
|
|
|
|
if (hdl)
|
|
sio_close(hdl);
|
|
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
int ff_sndio_close(SndioData *s)
|
|
{
|
|
av_freep(&s->buffer);
|
|
|
|
if (s->hdl)
|
|
sio_close(s->hdl);
|
|
|
|
return 0;
|
|
}
|