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https://github.com/FFmpeg/FFmpeg.git
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790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*
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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 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 <stdint.h>
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#include <sndio.h>
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#include "libavutil/mem.h"
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#include "libavdevice/sndio.h"
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static inline void movecb(void *addr, int delta)
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{
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SndioData *s = addr;
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s->hwpos += delta * s->channels * s->bps;
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}
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av_cold int ff_sndio_open(AVFormatContext *s1, int is_output,
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const char *audio_device)
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{
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SndioData *s = s1->priv_data;
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struct sio_hdl *hdl;
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struct sio_par par;
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hdl = sio_open(audio_device, is_output ? SIO_PLAY : SIO_REC, 0);
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if (!hdl) {
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av_log(s1, AV_LOG_ERROR, "Could not open sndio device\n");
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return AVERROR(EIO);
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}
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sio_initpar(&par);
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par.bits = 16;
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par.sig = 1;
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par.le = SIO_LE_NATIVE;
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if (is_output)
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par.pchan = s->channels;
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else
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par.rchan = s->channels;
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par.rate = s->sample_rate;
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if (!sio_setpar(hdl, &par) || !sio_getpar(hdl, &par)) {
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av_log(s1, AV_LOG_ERROR, "Impossible to set sndio parameters, "
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"channels: %d sample rate: %d\n", s->channels, s->sample_rate);
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goto fail;
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}
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if (par.bits != 16 || par.sig != 1 ||
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(is_output && (par.pchan != s->channels)) ||
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(!is_output && (par.rchan != s->channels)) ||
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(par.rate != s->sample_rate)) {
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av_log(s1, AV_LOG_ERROR, "Could not set appropriate sndio parameters, "
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"channels: %d sample rate: %d\n", s->channels, s->sample_rate);
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goto fail;
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}
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s->buffer_size = par.round * par.bps *
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(is_output ? par.pchan : par.rchan);
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if (is_output) {
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s->buffer = av_malloc(s->buffer_size);
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if (!s->buffer) {
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av_log(s1, AV_LOG_ERROR, "Could not allocate buffer\n");
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goto fail;
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}
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}
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s->codec_id = par.le ? AV_CODEC_ID_PCM_S16LE : AV_CODEC_ID_PCM_S16BE;
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s->channels = is_output ? par.pchan : par.rchan;
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s->sample_rate = par.rate;
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s->bps = par.bps;
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sio_onmove(hdl, movecb, s);
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if (!sio_start(hdl)) {
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av_log(s1, AV_LOG_ERROR, "Could not start sndio\n");
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goto fail;
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}
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s->hdl = hdl;
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return 0;
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fail:
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av_freep(&s->buffer);
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if (hdl)
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sio_close(hdl);
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return AVERROR(EIO);
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}
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int ff_sndio_close(SndioData *s)
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{
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av_freep(&s->buffer);
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if (s->hdl)
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sio_close(s->hdl);
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return 0;
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}
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