mirror of
https://github.com/mpv-player/mpv
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5c038e6999
The user bugmen0t was apparently a shared github account with publicly available login. Thus, we can't get LGPL relicensing permission from the people who used this account. To relicense successfully, we have to remove all their changes. This commit should remove20d1fc13
,f26fb009
,defbe48d
. It also should remove whatever test fragments were copied from the ancient configure, as well as some configure logic (potentially that device path stuff). I think this change still preserves the most important use-cases of OSS: BSDs, and the Linux OSS emulation (the latter for testing only). According to an OSS user, the 4front checks were probably broken anyway. The SunAudio stuff was probably for (Open)Solaris, which is dead. ao_oss.c itself will remain GPL, and still contains bugmen0t changes.
154 lines
4.4 KiB
C
154 lines
4.4 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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 of the License, or
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* (at your option) any later version.
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*
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* mpv 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 along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "config.h"
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/soundcard.h>
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#include "osdep/io.h"
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#include "audio_in.h"
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#include "common/common.h"
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#include "common/msg.h"
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int ai_oss_set_samplerate(audio_in_t *ai)
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{
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int tmp = ai->req_samplerate;
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if (ioctl(ai->oss.audio_fd, SNDCTL_DSP_SPEED, &tmp) == -1) return -1;
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ai->samplerate = tmp;
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return 0;
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}
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int ai_oss_set_channels(audio_in_t *ai)
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{
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int err;
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int ioctl_param;
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if (ai->req_channels > 2)
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{
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ioctl_param = ai->req_channels;
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MP_VERBOSE(ai, "ioctl dsp channels: %d\n",
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err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_CHANNELS, &ioctl_param));
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if (err < 0) {
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MP_ERR(ai, "Unable to set channel count: %d\n",
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ai->req_channels);
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return -1;
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}
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ai->channels = ioctl_param;
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}
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else
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{
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ioctl_param = (ai->req_channels == 2);
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MP_VERBOSE(ai, "ioctl dsp stereo: %d (req: %d)\n",
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err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_STEREO, &ioctl_param),
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ioctl_param);
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if (err < 0) {
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MP_ERR(ai, "Unable to set stereo: %d\n",
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ai->req_channels == 2);
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return -1;
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}
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ai->channels = ioctl_param ? 2 : 1;
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}
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return 0;
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}
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int ai_oss_init(audio_in_t *ai)
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{
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int err;
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int ioctl_param;
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const char *device = ai->oss.device;
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if (!device)
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device = "/dev/dsp";
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ai->oss.audio_fd = open(device, O_RDONLY | O_CLOEXEC);
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if (ai->oss.audio_fd < 0)
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{
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MP_ERR(ai, "Unable to open '%s': %s\n", device, mp_strerror(errno));
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return -1;
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}
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ioctl_param = 0 ;
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MP_VERBOSE(ai, "ioctl dsp getfmt: %d\n",
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ioctl(ai->oss.audio_fd, SNDCTL_DSP_GETFMTS, &ioctl_param));
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MP_VERBOSE(ai, "Supported formats: %x\n", ioctl_param);
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if (!(ioctl_param & AFMT_S16_NE))
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MP_ERR(ai, "unsupported format\n");
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ioctl_param = AFMT_S16_NE;
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MP_VERBOSE(ai, "ioctl dsp setfmt: %d\n",
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err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_SETFMT, &ioctl_param));
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if (err < 0) {
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MP_ERR(ai, "Unable to set audio format.");
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return -1;
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}
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if (ai_oss_set_channels(ai) < 0) return -1;
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ioctl_param = ai->req_samplerate;
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MP_VERBOSE(ai, "ioctl dsp speed: %d\n",
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err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_SPEED, &ioctl_param));
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if (err < 0) {
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MP_ERR(ai, "Unable to set samplerate: %d\n",
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ai->req_samplerate);
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return -1;
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}
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ai->samplerate = ioctl_param;
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MP_VERBOSE(ai, "ioctl dsp trigger: %d\n",
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ioctl(ai->oss.audio_fd, SNDCTL_DSP_GETTRIGGER, &ioctl_param));
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MP_VERBOSE(ai, "trigger: %x\n", ioctl_param);
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ioctl_param = PCM_ENABLE_INPUT;
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MP_VERBOSE(ai, "ioctl dsp trigger: %d\n",
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err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_SETTRIGGER, &ioctl_param));
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if (err < 0) {
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MP_ERR(ai, "Unable to set trigger: %d\n",
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PCM_ENABLE_INPUT);
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}
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ai->blocksize = 0;
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MP_VERBOSE(ai, "ioctl dsp getblocksize: %d\n",
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err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_GETBLKSIZE, &ai->blocksize));
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if (err < 0) {
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MP_ERR(ai, "Unable to get block size!\n");
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}
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MP_VERBOSE(ai, "blocksize: %d\n", ai->blocksize);
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// correct the blocksize to a reasonable value
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if (ai->blocksize <= 0) {
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ai->blocksize = 4096*ai->channels*2;
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MP_ERR(ai, "Audio block size is zero, setting to %d!\n", ai->blocksize);
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} else if (ai->blocksize < 4096*ai->channels*2) {
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ai->blocksize *= 4096*ai->channels*2/ai->blocksize;
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MP_ERR(ai, "Audio block size too low, setting to %d!\n", ai->blocksize);
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}
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ai->samplesize = 16;
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ai->bytes_per_sample = 2;
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return 0;
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}
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