mirror of
https://github.com/mpv-player/mpv
synced 2024-11-14 22:48:35 +01:00
b021d038c2
This is what you would expect. Before this commit, each ao_request_reload() call would just queue a reload command, and then recreate the AO for the number of times the function was called. Instead of sending a command, introduce some sort of event retrieval mechanism. At least for the reload case, use atomics, because we're too lazy to setup an extra mutex.
497 lines
15 KiB
C
497 lines
15 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer 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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* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "talloc.h"
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#include "config.h"
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#include "ao.h"
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#include "internal.h"
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#include "audio/format.h"
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#include "audio/audio.h"
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#include "input/input.h"
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#include "options/options.h"
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#include "options/m_config.h"
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#include "common/msg.h"
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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_coreaudio;
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extern const struct ao_driver audio_out_coreaudio_exclusive;
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extern const struct ao_driver audio_out_rsound;
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extern const struct ao_driver audio_out_sndio;
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extern const struct ao_driver audio_out_pulse;
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extern const struct ao_driver audio_out_jack;
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extern const struct ao_driver audio_out_openal;
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extern const struct ao_driver audio_out_null;
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extern const struct ao_driver audio_out_alsa;
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extern const struct ao_driver audio_out_dsound;
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extern const struct ao_driver audio_out_wasapi;
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extern const struct ao_driver audio_out_pcm;
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extern const struct ao_driver audio_out_lavc;
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extern const struct ao_driver audio_out_portaudio;
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extern const struct ao_driver audio_out_sdl;
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static const struct ao_driver * const audio_out_drivers[] = {
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// native:
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#if HAVE_COREAUDIO
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&audio_out_coreaudio,
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#endif
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#if HAVE_PULSE
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&audio_out_pulse,
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#endif
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#if HAVE_ALSA
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&audio_out_alsa,
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#endif
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#if HAVE_DSOUND
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&audio_out_dsound,
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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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#if HAVE_PORTAUDIO
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&audio_out_portaudio,
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#endif
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// wrappers:
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#if HAVE_JACK
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&audio_out_jack,
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#endif
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#if HAVE_OPENAL
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&audio_out_openal,
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#endif
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#if HAVE_SDL1 || HAVE_SDL2
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&audio_out_sdl,
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#endif
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#if HAVE_SNDIO
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&audio_out_sndio,
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#endif
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#if HAVE_COREAUDIO
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&audio_out_coreaudio_exclusive,
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#endif
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&audio_out_null,
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// should not be auto-selected:
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&audio_out_pcm,
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#if HAVE_ENCODING
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&audio_out_lavc,
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#endif
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#if HAVE_RSOUND
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&audio_out_rsound,
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#endif
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NULL
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};
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static bool get_desc(struct m_obj_desc *dst, int index)
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{
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if (index >= MP_ARRAY_SIZE(audio_out_drivers) - 1)
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return false;
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const struct ao_driver *ao = audio_out_drivers[index];
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*dst = (struct m_obj_desc) {
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.name = ao->name,
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.description = ao->description,
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.priv_size = ao->priv_size,
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.priv_defaults = ao->priv_defaults,
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.options = ao->options,
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.hidden = ao->encode,
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.p = ao,
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};
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return true;
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}
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// For the ao option
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const struct m_obj_list ao_obj_list = {
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.get_desc = get_desc,
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.description = "audio outputs",
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.allow_unknown_entries = true,
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.allow_trailer = true,
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};
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// Return true if the ao with the given name matches the opt (--audio-device
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// contents). If opt is empty, matching always succeeds. If out_device is not
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// NULL, it will be set to the implied audio device (or NULL).
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static bool match_ao_driver(const char *ao_name, char *opt, char **out_device)
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{
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bstr ao_nameb = bstr0(ao_name);
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bstr optb = bstr0(opt);
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char *dummy;
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if (!out_device)
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out_device = &dummy;
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*out_device = NULL;
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if (!optb.len || bstr_equals0(optb, "auto"))
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return true;
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if (!bstr_startswith(optb, ao_nameb))
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return false;
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if (optb.len > ao_nameb.len && optb.start[ao_nameb.len] != '/')
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return false;
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char *split = strchr(opt, '/');
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*out_device = split ? split + 1 : NULL;
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return true;
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}
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static struct ao *ao_alloc(bool probing, struct mpv_global *global,
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struct input_ctx *input_ctx, char *name, char **args)
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{
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struct MPOpts *opts = global->opts;
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struct mp_log *log = mp_log_new(NULL, global->log, "ao");
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struct m_obj_desc desc;
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if (!m_obj_list_find(&desc, &ao_obj_list, bstr0(name))) {
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mp_msg(log, MSGL_ERR, "Audio output %s not found!\n", name);
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talloc_free(log);
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return NULL;
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};
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struct ao *ao = talloc_ptrtype(NULL, ao);
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talloc_steal(ao, log);
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*ao = (struct ao) {
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.driver = desc.p,
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.probing = probing,
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.input_ctx = input_ctx,
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.log = mp_log_new(ao, log, name),
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.def_buffer = opts->audio_buffer,
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};
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struct m_config *config = m_config_from_obj_desc(ao, ao->log, &desc);
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if (m_config_apply_defaults(config, name, opts->ao_defs) < 0)
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goto error;
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if (m_config_set_obj_params(config, args) < 0)
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goto error;
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ao->priv = config->optstruct;
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return ao;
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error:
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talloc_free(ao);
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return NULL;
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}
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static struct ao *ao_alloc_pb(bool probing, struct mpv_global *global,
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struct input_ctx *input_ctx,
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struct encode_lavc_context *encode_lavc_ctx,
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int samplerate, int format, struct mp_chmap channels,
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char *name, char **args)
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{
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struct MPOpts *opts = global->opts;
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struct ao *ao = ao_alloc(probing, global, input_ctx, name, args);
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if (!ao)
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return NULL;
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ao->samplerate = samplerate;
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ao->channels = channels;
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ao->format = format;
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ao->encode_lavc_ctx = encode_lavc_ctx;
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if (ao->driver->encode != !!ao->encode_lavc_ctx) {
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talloc_free(ao);
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return NULL;
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}
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match_ao_driver(ao->driver->name, opts->audio_device, &ao->device);
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ao->device = talloc_strdup(ao, ao->device);
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ao->client_name = talloc_strdup(ao, opts->audio_client_name);
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return ao;
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}
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static int ao_init(struct ao *ao)
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{
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char *chmap = mp_chmap_to_str(&ao->channels);
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MP_VERBOSE(ao, "requested format: %d Hz, %s channels, %s\n",
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ao->samplerate, chmap, af_fmt_to_str(ao->format));
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talloc_free(chmap);
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ao->api = ao->driver->play ? &ao_api_push : &ao_api_pull;
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ao->api_priv = talloc_zero_size(ao, ao->api->priv_size);
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assert(!ao->api->priv_defaults && !ao->api->options);
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int r = ao->driver->init(ao);
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if (r < 0)
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return r;
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ao->sstride = af_fmt2bps(ao->format);
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ao->num_planes = 1;
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if (af_fmt_is_planar(ao->format)) {
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ao->num_planes = ao->channels.num;
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} else {
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ao->sstride *= ao->channels.num;
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}
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ao->bps = ao->samplerate * ao->sstride;
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if (!ao->device_buffer && ao->driver->get_space) {
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ao->device_buffer = ao->driver->get_space(ao);
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MP_VERBOSE(ao, "device buffer: %d samples.\n", ao->device_buffer);
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}
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ao->buffer = MPMAX(ao->device_buffer, ao->def_buffer * ao->samplerate);
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MP_VERBOSE(ao, "using soft-buffer of %d samples.\n", ao->buffer);
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return ao->api->init(ao);
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}
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static struct ao *ao_create(bool probing, struct mpv_global *global,
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struct input_ctx *input_ctx,
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struct encode_lavc_context *encode_lavc_ctx,
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int samplerate, int format, struct mp_chmap channels,
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char *name, char **args)
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{
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struct ao *ao = ao_alloc_pb(probing, global, input_ctx, encode_lavc_ctx,
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samplerate, format, channels, name, args);
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if (ao && ao_init(ao) >= 0)
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return ao;
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// Silly exception for coreaudio spdif redirection
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if (ao && ao->redirect) {
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char redirect[80], device[80];
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snprintf(redirect, sizeof(redirect), "%s", ao->redirect);
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snprintf(device, sizeof(device), "%s", ao->device ? ao->device : "");
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talloc_free(ao);
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ao = ao_alloc_pb(probing, global, input_ctx, encode_lavc_ctx,
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samplerate, format, channels, redirect, args);
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if (ao) {
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ao->device = talloc_strdup(ao, device);
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if (ao_init(ao) >= 0)
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return ao;
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}
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}
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talloc_free(ao);
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return NULL;
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}
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struct ao *ao_init_best(struct mpv_global *global,
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struct input_ctx *input_ctx,
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struct encode_lavc_context *encode_lavc_ctx,
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int samplerate, int format, struct mp_chmap channels)
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{
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struct MPOpts *opts = global->opts;
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struct mp_log *log = mp_log_new(NULL, global->log, "ao");
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struct ao *ao = NULL;
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struct m_obj_settings *ao_list = opts->audio_driver_list;
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if (ao_list && ao_list[0].name) {
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for (int n = 0; ao_list[n].name; n++) {
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if (strlen(ao_list[n].name) == 0)
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goto autoprobe;
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mp_verbose(log, "Trying preferred audio driver '%s'\n",
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ao_list[n].name);
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ao = ao_create(false, global, input_ctx, encode_lavc_ctx,
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samplerate, format, channels,
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ao_list[n].name, ao_list[n].attribs);
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if (ao)
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goto done;
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mp_warn(log, "Failed to initialize audio driver '%s'\n",
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ao_list[n].name);
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}
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goto done;
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}
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autoprobe: ;
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// now try the rest...
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bool matched_dev = false;
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for (int i = 0; audio_out_drivers[i]; i++) {
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char *name = (char *)audio_out_drivers[i]->name;
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if (!match_ao_driver(name, opts->audio_device, NULL))
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continue;
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matched_dev = true;
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ao = ao_create(true, global, input_ctx, encode_lavc_ctx,
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samplerate, format, channels, name, NULL);
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if (ao)
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goto done;
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}
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if (!matched_dev)
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mp_err(log, "--audio-device option refers to missing output driver.\n");
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done:
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talloc_free(log);
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return ao;
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}
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// Uninitialize and destroy the AO. Remaining audio must be dropped.
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void ao_uninit(struct ao *ao)
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{
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ao->api->uninit(ao);
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talloc_free(ao);
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}
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// Queue the given audio data. Start playback if it hasn't started yet. Return
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// the number of samples that was accepted (the core will try to queue the rest
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// again later). Should never block.
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// data: start pointer for each plane. If the audio data is packed, only
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// data[0] is valid, otherwise there is a plane for each channel.
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// samples: size of the audio data (see ao->sstride)
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// flags: currently AOPLAY_FINAL_CHUNK can be set
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int ao_play(struct ao *ao, void **data, int samples, int flags)
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{
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return ao->api->play(ao, data, samples, flags);
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}
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int ao_control(struct ao *ao, enum aocontrol cmd, void *arg)
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{
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return ao->api->control ? ao->api->control(ao, cmd, arg) : CONTROL_UNKNOWN;
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}
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// Return size of the buffered data in seconds. Can include the device latency.
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// Basically, this returns how much data there is still to play, and how long
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// it takes until the last sample in the buffer reaches the speakers. This is
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// used for audio/video synchronization, so it's very important to implement
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// this correctly.
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double ao_get_delay(struct ao *ao)
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{
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return ao->api->get_delay(ao);
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}
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// Return free size of the internal audio buffer. This controls how much audio
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// the core should decode and try to queue with ao_play().
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int ao_get_space(struct ao *ao)
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{
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return ao->api->get_space(ao);
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}
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// Stop playback and empty buffers. Essentially go back to the state after
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// ao->init().
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void ao_reset(struct ao *ao)
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{
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if (ao->api->reset)
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ao->api->reset(ao);
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}
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// Pause playback. Keep the current buffer. ao_get_delay() must return the
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// same value as before pausing.
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void ao_pause(struct ao *ao)
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{
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if (ao->api->pause)
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ao->api->pause(ao);
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}
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// Resume playback. Play the remaining buffer. If the driver doesn't support
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// pausing, it has to work around this and e.g. use ao_play_silence() to fill
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// the lost audio.
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void ao_resume(struct ao *ao)
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{
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if (ao->api->resume)
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ao->api->resume(ao);
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}
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// Block until the current audio buffer has played completely.
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void ao_drain(struct ao *ao)
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{
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if (ao->api->drain)
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ao->api->drain(ao);
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}
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bool ao_eof_reached(struct ao *ao)
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{
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return ao->api->get_eof ? ao->api->get_eof(ao) : true;
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}
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// Query the AO_EVENT_*s as requested by the events parameter, and return them.
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int ao_query_and_reset_events(struct ao *ao, int events)
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{
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int actual_events = 0;
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if (atomic_load(&ao->request_reload)) // don't need to reset it
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actual_events |= AO_EVENT_RELOAD;
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return actual_events & events;
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}
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// Request that the player core destroys and recreates the AO.
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void ao_request_reload(struct ao *ao)
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{
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atomic_store(&ao->request_reload, true);
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mp_input_wakeup(ao->input_ctx);
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}
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bool ao_chmap_sel_adjust(struct ao *ao, const struct mp_chmap_sel *s,
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struct mp_chmap *map)
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{
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return mp_chmap_sel_adjust(s, map);
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}
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bool ao_chmap_sel_get_def(struct ao *ao, const struct mp_chmap_sel *s,
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struct mp_chmap *map, int num)
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{
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return mp_chmap_sel_get_def(s, map, num);
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}
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// --- The following functions just return immutable information.
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void ao_get_format(struct ao *ao, struct mp_audio *format)
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{
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*format = (struct mp_audio){0};
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mp_audio_set_format(format, ao->format);
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mp_audio_set_channels(format, &ao->channels);
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format->rate = ao->samplerate;
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}
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const char *ao_get_name(struct ao *ao)
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{
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return ao->driver->name;
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}
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const char *ao_get_description(struct ao *ao)
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{
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return ao->driver->description;
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}
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bool ao_untimed(struct ao *ao)
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{
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return ao->untimed;
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}
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struct ao_device_list *ao_get_device_list(struct mpv_global *global)
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{
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struct ao_device_list *list = talloc_zero(NULL, struct ao_device_list);
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MP_TARRAY_APPEND(list, list->devices, list->num_devices,
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(struct ao_device_desc){"auto", "Autoselect device"});
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for (int n = 0; audio_out_drivers[n]; n++) {
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const struct ao_driver *d = audio_out_drivers[n];
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if (d == &audio_out_null)
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break; // don't add unsafe/special entries
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struct ao *ao = ao_alloc(true, global, NULL, (char *)d->name, NULL);
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if (!ao)
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continue;
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int num = list->num_devices;
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if (d->list_devs)
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d->list_devs(ao, list);
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// Add at least a default entry
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if (list->num_devices == num)
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ao_device_list_add(list, ao, &(struct ao_device_desc){"", "Default"});
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talloc_free(ao);
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}
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return list;
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}
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void ao_device_list_add(struct ao_device_list *list, struct ao *ao,
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struct ao_device_desc *e)
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{
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struct ao_device_desc c = *e;
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const char *dname = ao->driver->name;
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c.name = c.name[0] ? talloc_asprintf(list, "%s/%s", dname, c.name)
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: talloc_strdup(list, dname);
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c.desc = talloc_strdup(list, c.desc);
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MP_TARRAY_APPEND(list, list->devices, list->num_devices, c);
|
|
}
|
|
|
|
void ao_print_devices(struct mpv_global *global, struct mp_log *log)
|
|
{
|
|
struct ao_device_list *list = ao_get_device_list(global);
|
|
mp_info(log, "List of detected audio devices:\n");
|
|
for (int n = 0; n < list->num_devices; n++) {
|
|
struct ao_device_desc *desc = &list->devices[n];
|
|
mp_info(log, " '%s' (%s)\n", desc->name, desc->desc);
|
|
}
|
|
talloc_free(list);
|
|
}
|