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124 lines
3.8 KiB
124 lines
3.8 KiB
4 years ago
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/*
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* probe_sunau.c
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*
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* Copyright (C) Jacob Meuser - December 2004
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*
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* This file is part of transcode, a video stream processing tool
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*
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* transcode is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* transcode 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "transcode.h"
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#include "tcinfo.h"
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#include "ioaux.h"
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#include "tc.h"
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#include "libtc/libtc.h"
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#ifdef HAVE_SUNAU
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/audioio.h>
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void
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probe_sunau(info_t * ipipe)
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{
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audio_info_t audio_if;
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close(ipipe->fd_in);
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ipipe->fd_in = open(ipipe->name, O_RDONLY, 0);
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if (ipipe->fd_in < 0) {
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tc_log_error(__FILE__, "cannot (re)open device: %s", strerror(errno));
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goto error;
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}
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AUDIO_INITINFO(&audio_if);
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/* try tc's defaults, we probably don't want 8000kHz 8 bit mono */
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audio_if.record.precision = 16;
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audio_if.record.channels = 2;
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audio_if.record.sample_rate = 48000;
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audio_if.record.encoding = AUDIO_ENCODING_SLINEAR_LE;
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audio_if.mode = AUMODE_RECORD;
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if (ipipe->verbose & TC_DEBUG)
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tc_log_msg(__FILE__, "checking for valid samplerate...");
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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audio_if.record.sample_rate = 44100;
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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audio_if.record.sample_rate = 32000;
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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audio_if.record.sample_rate = 22050;
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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audio_if.record.sample_rate = 24000;
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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audio_if.record.sample_rate = 16000;
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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audio_if.record.sample_rate = 11025;
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if (ioctl(ipipe->fd_in, AUDIO_SETINFO, &audio_if) < 0) {
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if (ipipe->verbose & TC_DEBUG)
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tc_log_msg(__FILE__, "... not found");
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goto error;
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}
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}
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}
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}
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}
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}
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}
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if (ipipe->verbose & TC_DEBUG)
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tc_log_msg(__FILE__, "... found %d", audio_if.record.sample_rate);
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if (ioctl(ipipe->fd_in, AUDIO_GETINFO, &audio_if) < 0) {
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tc_log_perror(__FILE__, "AUDIO_GETINFO");
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goto error;
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}
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ipipe->probe_info->track[0].bits = audio_if.record.precision;
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ipipe->probe_info->track[0].chan = audio_if.record.channels;
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ipipe->probe_info->track[0].samplerate = audio_if.record.sample_rate;
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ipipe->probe_info->track[0].format = 0x1;
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if (ipipe->probe_info->track[0].chan > 0)
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ipipe->probe_info->num_tracks = 1;
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ipipe->probe_info->magic = TC_MAGIC_SUNAU_AUDIO;
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ipipe->probe_info->codec = TC_CODEC_PCM;
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return;
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error:
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ipipe->error = 1;
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ipipe->probe_info->codec = TC_CODEC_UNKNOWN;
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ipipe->probe_info->magic = TC_MAGIC_UNKNOWN;
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return;
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}
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#else /* HAVE_SUNAU */
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void
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probe_sunau(info_t * ipipe)
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{
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tc_log_error(__FILE__, "No support for sunau compiled in");
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ipipe->probe_info->codec = TC_CODEC_UNKNOWN;
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ipipe->probe_info->magic = TC_MAGIC_UNKNOWN;
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}
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#endif
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