mirror of https://github.com/mpv-player/mpv
ao_oss: add this audio output again
Changes: - code refactored; - mixer options removed; - new mpv sound API used; - add sound devices detect (mpv --audio-device=help will show all available devices); - only OSSv4 supported now; Tested on FreeBSD 12.2 amd64.
This commit is contained in:
parent
e79e455a36
commit
1b2e5137e0
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@ -14,7 +14,7 @@ in the list.
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See ``--ao=help`` for a list of compiled-in audio output drivers. The
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driver ``--ao=alsa`` is preferred. ``--ao=pulse`` is preferred on systems
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where PulseAudio is used.
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where PulseAudio is used. On BSD systems, ``--ao=oss`` is preferred.
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Available audio output drivers are:
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@ -35,6 +35,9 @@ Available audio output drivers are:
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with automatic upmixing with shared access, so playing stereo
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and multichannel audio at the same time will work as expected.
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``oss``
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OSS audio output driver
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``jack``
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JACK (Jack Audio Connection Kit) audio output driver.
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@ -35,6 +35,7 @@
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#include "common/common.h"
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#include "common/global.h"
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extern const struct ao_driver audio_out_oss;
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extern const struct ao_driver audio_out_audiotrack;
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extern const struct ao_driver audio_out_audiounit;
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extern const struct ao_driver audio_out_coreaudio;
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@ -70,6 +71,9 @@ static const struct ao_driver * const audio_out_drivers[] = {
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#endif
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#if HAVE_WASAPI
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&audio_out_wasapi,
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#endif
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#if HAVE_OSS_AUDIO
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&audio_out_oss,
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#endif
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// wrappers:
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#if HAVE_JACK
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@ -0,0 +1,410 @@
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/*
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* OSS audio output driver
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*
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* Original author: A'rpi
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* Support for >2 output channels added 2001-11-25
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* - Steve Davies <steve@daviesfam.org>
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* Rozhuk Ivan <rozhuk.im@gmail.com> 2020
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*
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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 <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/soundcard.h>
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#include <sys/stat.h>
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#if defined(__DragonFly__) || defined(__FreeBSD__)
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#include <sys/sysctl.h>
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#endif
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#include <sys/types.h>
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#include "config.h"
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#include "audio/format.h"
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#include "common/msg.h"
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#include "options/options.h"
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#include "osdep/endian.h"
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#include "osdep/io.h"
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#include "ao.h"
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#include "internal.h"
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#ifndef AFMT_AC3
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#define AFMT_AC3 -1
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#endif
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#define PATH_DEV_DSP "/dev/dsp"
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struct priv {
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int dsp_fd;
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bool playing;
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double bps; /* Bytes per second. */
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};
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/* like alsa except for 6.1 and 7.1, from pcm/matrix_map.h */
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static const struct mp_chmap oss_layouts[MP_NUM_CHANNELS + 1] = {
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{0}, /* empty */
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MP_CHMAP_INIT_MONO, /* mono */
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MP_CHMAP2(FL, FR), /* stereo */
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MP_CHMAP3(FL, FR, LFE), /* 2.1 */
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MP_CHMAP4(FL, FR, BL, BR), /* 4.0 */
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MP_CHMAP5(FL, FR, BL, BR, FC), /* 5.0 */
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MP_CHMAP6(FL, FR, BL, BR, FC, LFE), /* 5.1 */
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MP_CHMAP7(FL, FR, BL, BR, FC, LFE, BC), /* 6.1 */
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MP_CHMAP8(FL, FR, BL, BR, FC, LFE, SL, SR), /* 7.1 */
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};
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#if !defined(AFMT_S32_NE) && defined(AFMT_S32_LE) && defined(AFMT_S32_BE)
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#define AFMT_S32_NE AFMT_S32MP_SELECT_LE_BE(AFMT_S32_LE, AFMT_S32_BE)
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#endif
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static const int format_table[][2] = {
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{AFMT_U8, AF_FORMAT_U8},
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{AFMT_S16_NE, AF_FORMAT_S16},
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#ifdef AFMT_S32_NE
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{AFMT_S32_NE, AF_FORMAT_S32},
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#endif
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#ifdef AFMT_FLOAT
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{AFMT_FLOAT, AF_FORMAT_FLOAT},
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#endif
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#ifdef AFMT_MPEG
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{AFMT_MPEG, AF_FORMAT_S_MP3},
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#endif
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{-1, -1}
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};
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#define MP_WARN_IOCTL_ERR(__ao) \
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MP_WARN((__ao), "%s: ioctl() fail, err = %i: %s\n", \
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__FUNCTION__, errno, strerror(errno))
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static void uninit(struct ao *ao);
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static void device_descr_get(size_t dev_idx, char *buf, size_t buf_size)
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{
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#if defined(__DragonFly__) || defined(__FreeBSD__)
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char dev_path[32];
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size_t tmp = (buf_size - 1);
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snprintf(dev_path, sizeof(dev_path), "dev.pcm.%zu.%%desc", dev_idx);
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if (sysctlbyname(dev_path, buf, &tmp, NULL, 0) != 0) {
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tmp = 0;
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}
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buf[tmp] = 0x00;
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#elif defined(SOUND_MIXER_INFO)
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size_t tmp = 0;
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char dev_path[32];
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mixer_info mi;
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snprintf(dev_path, sizeof(dev_path), PATH_DEV_MIXER"%zu", dev_idx);
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int fd = open(dev_path, O_RDONLY);
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if (ioctl(fd, SOUND_MIXER_INFO, &mi) == 0) {
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strncpy(buf, mi.name, buf_size);
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tmp = (buf_size - 1);
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}
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close(fd);
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buf[tmp] = 0x00;
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#else
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buf[0] = 0x00;
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#endif
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}
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static int format2oss(int format)
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{
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for (size_t i = 0; format_table[i][0] != -1; i++) {
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if (format_table[i][1] == format)
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return format_table[i][0];
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}
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return -1;
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}
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static bool try_format(struct ao *ao, int *format)
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{
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struct priv *p = ao->priv;
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int oss_format = format2oss(*format);
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if (oss_format == -1 && af_fmt_is_spdif(*format))
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oss_format = AFMT_AC3;
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if (oss_format == -1) {
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MP_VERBOSE(ao, "Unknown/not supported internal format: %s\n",
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af_fmt_to_str(*format));
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*format = 0;
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return false;
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}
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return (ioctl(p->dsp_fd, SNDCTL_DSP_SETFMT, &oss_format) != -1);
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}
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static int init(struct ao *ao)
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{
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struct priv *p = ao->priv;
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struct mp_chmap channels = ao->channels;
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audio_buf_info info;
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size_t i;
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int format, samplerate, nchannels, reqchannels, trig = 0;
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int best_sample_formats[AF_FORMAT_COUNT + 1];
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const char *device = ((ao->device) ? ao->device : PATH_DEV_DSP);
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/* Opening device. */
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MP_VERBOSE(ao, "Using '%s' audio device.\n", device);
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p->dsp_fd = open(device, (O_WRONLY | O_CLOEXEC));
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if (p->dsp_fd < 0) {
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MP_ERR(ao, "Can't open audio device %s: %s.\n",
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device, mp_strerror(errno));
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goto err_out;
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}
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/* Selecting sound format. */
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format = af_fmt_from_planar(ao->format);
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af_get_best_sample_formats(format, best_sample_formats);
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for (i = 0; best_sample_formats[i]; i++) {
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format = best_sample_formats[i];
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if (try_format(ao, &format))
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break;
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}
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if (!format) {
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MP_ERR(ao, "Can't set sample format.\n");
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goto err_out;
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}
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MP_VERBOSE(ao, "Sample format: %s\n", af_fmt_to_str(format));
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/* Channels count. */
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if (af_fmt_is_spdif(format)) {
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/* Probably could be fixed by setting number of channels;
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* needs testing. */
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if (channels.num != 2) {
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MP_ERR(ao, "Format %s not implemented.\n", af_fmt_to_str(format));
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goto err_out;
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}
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} else {
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struct mp_chmap_sel sel = {0};
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for (i = 0; i < MP_ARRAY_SIZE(oss_layouts); i++) {
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mp_chmap_sel_add_map(&sel, &oss_layouts[i]);
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}
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if (!ao_chmap_sel_adjust(ao, &sel, &channels))
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goto err_out;
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nchannels = reqchannels = channels.num;
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if (ioctl(p->dsp_fd, SNDCTL_DSP_CHANNELS, &nchannels) == -1) {
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MP_ERR(ao, "Failed to set audio device to %d channels.\n",
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reqchannels);
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goto err_out_ioctl;
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}
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if (nchannels != reqchannels) {
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/* Update number of channels to OSS suggested value. */
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if (!ao_chmap_sel_get_def(ao, &sel, &channels, nchannels))
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goto err_out;
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}
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MP_VERBOSE(ao, "Using %d channels (requested: %d).\n",
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channels.num, reqchannels);
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}
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/* Sample rate. */
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samplerate = ao->samplerate;
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if (ioctl(p->dsp_fd, SNDCTL_DSP_SPEED, &samplerate) == -1)
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goto err_out_ioctl;
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MP_VERBOSE(ao, "Using %d Hz samplerate.\n", samplerate);
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/* Get buffer size. */
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if (ioctl(p->dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1)
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goto err_out_ioctl;
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/* See ao.c ao->sstride initializations and get_state(). */
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ao->device_buffer = ((info.fragstotal * info.fragsize) /
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af_fmt_to_bytes(format));
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if (!af_fmt_is_planar(format)) {
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ao->device_buffer /= channels.num;
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}
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/* Do not start playback after data written. */
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if (ioctl(p->dsp_fd, SNDCTL_DSP_SETTRIGGER, &trig) == -1)
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goto err_out_ioctl;
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/* Update sound params. */
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ao->format = format;
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ao->samplerate = samplerate;
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ao->channels = channels;
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p->bps = (channels.num * samplerate * af_fmt_to_bytes(format));
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p->playing = false;
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return 0;
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err_out_ioctl:
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MP_WARN_IOCTL_ERR(ao);
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err_out:
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uninit(ao);
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return -1;
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}
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static void uninit(struct ao *ao)
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{
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struct priv *p = ao->priv;
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if (p->dsp_fd == -1)
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return;
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ioctl(p->dsp_fd, SNDCTL_DSP_HALT, NULL);
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close(p->dsp_fd);
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p->dsp_fd = -1;
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p->playing = false;
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}
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static int control(struct ao *ao, enum aocontrol cmd, void *arg)
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{
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struct priv *p = ao->priv;
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ao_control_vol_t *vol = (ao_control_vol_t *)arg;
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int v;
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if (p->dsp_fd < 0)
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return CONTROL_ERROR;
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switch (cmd) {
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case AOCONTROL_GET_VOLUME:
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if (ioctl(p->dsp_fd, SNDCTL_DSP_GETPLAYVOL, &v) == -1) {
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MP_WARN_IOCTL_ERR(ao);
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return CONTROL_ERROR;
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}
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vol->right = ((v & 0xff00) >> 8);
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vol->left = (v & 0x00ff);
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return CONTROL_OK;
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case AOCONTROL_SET_VOLUME:
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v = ((int)vol->right << 8) | (int)vol->left;
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if (ioctl(p->dsp_fd, SNDCTL_DSP_SETPLAYVOL, &v) == -1) {
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MP_WARN_IOCTL_ERR(ao);
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return CONTROL_ERROR;
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}
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return CONTROL_OK;
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}
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return CONTROL_UNKNOWN;
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}
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static void reset(struct ao *ao)
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{
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struct priv *p = ao->priv;
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int trig = 0;
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/* Clear buf and do not start playback after data written. */
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p->playing = false;
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if (ioctl(p->dsp_fd, SNDCTL_DSP_HALT, NULL) == -1 ||
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ioctl(p->dsp_fd, SNDCTL_DSP_SETTRIGGER, &trig) == -1)
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{
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MP_WARN_IOCTL_ERR(ao);
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MP_WARN(ao, "Force reinitialize audio device.\n");
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uninit(ao);
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init(ao);
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}
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}
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static void start(struct ao *ao)
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{
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struct priv *p = ao->priv;
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int trig = PCM_ENABLE_OUTPUT;
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if (ioctl(p->dsp_fd, SNDCTL_DSP_SETTRIGGER, &trig) == -1) {
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MP_WARN_IOCTL_ERR(ao);
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return;
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}
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p->playing = true;
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}
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static bool audio_write(struct ao *ao, void **data, int samples)
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{
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struct priv *p = ao->priv;
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ssize_t rc;
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const size_t size = (samples * ao->sstride);
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if (size == 0)
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return true;
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while ((rc = write(p->dsp_fd, data[0], size)) == -1) {
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if (errno == EINTR)
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continue;
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MP_WARN(ao, "audio_write: write() fail, err = %i: %s.\n",
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errno, strerror(errno));
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p->playing = false;
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return false;
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}
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if ((size_t)rc != size) {
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MP_WARN(ao, "audio_write: unexpected partial write: required: %zu, written: %zu.\n",
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size, (size_t)rc);
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p->playing = false;
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return false;
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}
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return true;
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}
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static void get_state(struct ao *ao, struct mp_pcm_state *state)
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{
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struct priv *p = ao->priv;
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audio_buf_info info;
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int odelay;
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if (ioctl(p->dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1 ||
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ioctl(p->dsp_fd, SNDCTL_DSP_GETODELAY, &odelay) == -1)
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{
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MP_WARN_IOCTL_ERR(ao);
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p->playing = false;
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memset(state, 0x00, sizeof(struct mp_pcm_state));
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state->delay = 0.0;
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return;
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}
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state->free_samples = (info.bytes / ao->sstride);
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state->queued_samples = (ao->device_buffer - state->free_samples);
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state->delay = (odelay / p->bps);
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state->playing = p->playing;
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}
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static void list_devs(struct ao *ao, struct ao_device_list *list)
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{
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struct stat st;
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char dev_path[32] = PATH_DEV_DSP, dev_descr[256] = "Default";
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struct ao_device_desc dev = {.name = dev_path, .desc = dev_descr};
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if (stat(PATH_DEV_DSP, &st) == 0) {
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ao_device_list_add(list, ao, &dev);
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}
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/* Auto detect. */
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for (size_t i = 0, fail_cnt = 0; fail_cnt < 8; i ++, fail_cnt ++) {
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snprintf(dev_path, sizeof(dev_path), PATH_DEV_DSP"%zu", i);
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if (stat(dev_path, &st) != 0)
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continue;
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device_descr_get(i, dev_descr, sizeof(dev_descr));
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ao_device_list_add(list, ao, &dev);
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fail_cnt = 0; /* Reset fail counter. */
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}
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}
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const struct ao_driver audio_out_oss = {
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.name = "oss",
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.description = "OSS/ioctl audio output",
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.init = init,
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.uninit = uninit,
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.control = control,
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.reset = reset,
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.start = start,
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.write = audio_write,
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.get_state = get_state,
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.list_devs = list_devs,
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.priv_size = sizeof(struct priv),
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.priv_defaults = &(const struct priv) {
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.dsp_fd = -1,
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.playing = false,
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},
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};
|
5
wscript
5
wscript
|
@ -421,6 +421,11 @@ audio_output_features = [
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'desc': 'SDL2 audio output',
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'deps': 'sdl2',
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'func': check_true,
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}, {
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'name': '--oss-audio',
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'desc': 'OSSv4 audio output',
|
||||
'func': check_statement(['sys/soundcard.h'], 'int x = SNDCTL_DSP_SETPLAYVOL'),
|
||||
'deps': 'posix && gpl',
|
||||
}, {
|
||||
'name': '--pulse',
|
||||
'desc': 'PulseAudio audio output',
|
||||
|
|
|
@ -244,6 +244,7 @@ def build(ctx):
|
|||
( "audio/out/ao_null.c" ),
|
||||
( "audio/out/ao_openal.c", "openal" ),
|
||||
( "audio/out/ao_opensles.c", "opensles" ),
|
||||
( "audio/out/ao_oss.c", "oss-audio" ),
|
||||
( "audio/out/ao_pcm.c" ),
|
||||
( "audio/out/ao_pulse.c", "pulse" ),
|
||||
( "audio/out/ao_sdl.c", "sdl2-audio" ),
|
||||
|
|
Loading…
Reference in New Issue