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Diffstat (limited to '')
| -rw-r--r-- | player/audio.c | 985 |
1 files changed, 985 insertions, 0 deletions
diff --git a/player/audio.c b/player/audio.c new file mode 100644 index 0000000..ca17d33 --- /dev/null +++ b/player/audio.c @@ -0,0 +1,985 @@ +/* + * This file is part of mpv. + * + * mpv is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * mpv is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with mpv. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stddef.h> +#include <stdbool.h> +#include <inttypes.h> +#include <limits.h> +#include <math.h> +#include <assert.h> + +#include "mpv_talloc.h" + +#include "common/msg.h" +#include "common/encode.h" +#include "options/options.h" +#include "common/common.h" +#include "osdep/timer.h" + +#include "audio/format.h" +#include "audio/out/ao.h" +#include "demux/demux.h" +#include "filters/f_async_queue.h" +#include "filters/f_decoder_wrapper.h" +#include "filters/filter_internal.h" + +#include "core.h" +#include "command.h" + +enum { + AD_OK = 0, + AD_EOF = -2, + AD_WAIT = -4, +}; + +static void ao_process(struct mp_filter *f); + +static void update_speed_filters(struct MPContext *mpctx) +{ + struct ao_chain *ao_c = mpctx->ao_chain; + if (!ao_c) + return; + + double speed = mpctx->opts->playback_speed; + double resample = mpctx->speed_factor_a; + double drop = 1.0; + + if (!mpctx->opts->pitch_correction) { + resample *= speed; + speed = 1.0; + } + + if (mpctx->display_sync_active) { + switch (mpctx->video_out->opts->video_sync) { + case VS_DISP_ADROP: + drop *= speed * resample; + resample = speed = 1.0; + break; + case VS_DISP_TEMPO: + speed = mpctx->audio_speed; + resample = 1.0; + break; + } + } + + mp_output_chain_set_audio_speed(ao_c->filter, speed, resample, drop); +} + +static int recreate_audio_filters(struct MPContext *mpctx) +{ + struct ao_chain *ao_c = mpctx->ao_chain; + assert(ao_c); + + if (!mp_output_chain_update_filters(ao_c->filter, mpctx->opts->af_settings)) + goto fail; + + update_speed_filters(mpctx); + + mp_notify(mpctx, MPV_EVENT_AUDIO_RECONFIG, NULL); + + return 0; + +fail: + MP_ERR(mpctx, "Audio filter initialized failed!\n"); + return -1; +} + +int reinit_audio_filters(struct MPContext *mpctx) +{ + struct ao_chain *ao_c = mpctx->ao_chain; + if (!ao_c) + return 0; + + double delay = mp_output_get_measured_total_delay(ao_c->filter); + + if (recreate_audio_filters(mpctx) < 0) + return -1; + + double ndelay = mp_output_get_measured_total_delay(ao_c->filter); + + // Only force refresh if the amount of dropped buffered data is going to + // cause "issues" for the A/V sync logic. + if (mpctx->audio_status == STATUS_PLAYING && delay - ndelay >= 0.2) + issue_refresh_seek(mpctx, MPSEEK_EXACT); + return 1; +} + +static double db_gain(double db) +{ + return pow(10.0, db/20.0); +} + +static float compute_replaygain(struct MPContext *mpctx) +{ + struct MPOpts *opts = mpctx->opts; + + float rgain = 1.0; + + struct replaygain_data *rg = NULL; + struct track *track = mpctx->current_track[0][STREAM_AUDIO]; + if (track) + rg = track->stream->codec->replaygain_data; + if (opts->rgain_mode && rg) { + MP_VERBOSE(mpctx, "Replaygain: Track=%f/%f Album=%f/%f\n", + rg->track_gain, rg->track_peak, + rg->album_gain, rg->album_peak); + + float gain, peak; + if (opts->rgain_mode == 1) { + gain = rg->track_gain; + peak = rg->track_peak; + } else { + gain = rg->album_gain; + peak = rg->album_peak; + } + + gain += opts->rgain_preamp; + rgain = db_gain(gain); + + MP_VERBOSE(mpctx, "Applying replay-gain: %f\n", rgain); + + if (!opts->rgain_clip) { // clipping prevention + rgain = MPMIN(rgain, 1.0 / peak); + MP_VERBOSE(mpctx, "...with clipping prevention: %f\n", rgain); + } + } else if (opts->rgain_fallback) { + rgain = db_gain(opts->rgain_fallback); + MP_VERBOSE(mpctx, "Applying fallback gain: %f\n", rgain); + } + + return rgain; +} + +// Called when opts->softvol_volume or opts->softvol_mute were changed. +void audio_update_volume(struct MPContext *mpctx) +{ + struct MPOpts *opts = mpctx->opts; + struct ao_chain *ao_c = mpctx->ao_chain; + if (!ao_c || !ao_c->ao) + return; + + float gain = MPMAX(opts->softvol_volume / 100.0, 0); + gain = pow(gain, 3); + gain *= compute_replaygain(mpctx); + if (opts->softvol_mute == 1) + gain = 0.0; + + ao_set_gain(ao_c->ao, gain); +} + +// Call this if opts->playback_speed or mpctx->speed_factor_* change. +void update_playback_speed(struct MPContext *mpctx) +{ + mpctx->audio_speed = mpctx->opts->playback_speed * mpctx->speed_factor_a; + mpctx->video_speed = mpctx->opts->playback_speed * mpctx->speed_factor_v; + + update_speed_filters(mpctx); +} + +static bool has_video_track(struct MPContext *mpctx) +{ + if (mpctx->vo_chain && mpctx->vo_chain->is_coverart) + return false; + + for (int n = 0; n < mpctx->num_tracks; n++) { + struct track *track = mpctx->tracks[n]; + if (track->type == STREAM_VIDEO && !track->attached_picture && !track->image) + return true; + } + + return false; +} + +static void ao_chain_reset_state(struct ao_chain *ao_c) +{ + ao_c->last_out_pts = MP_NOPTS_VALUE; + ao_c->out_eof = false; + ao_c->start_pts_known = false; + ao_c->start_pts = MP_NOPTS_VALUE; + ao_c->untimed_throttle = false; + ao_c->underrun = false; +} + +void reset_audio_state(struct MPContext *mpctx) +{ + if (mpctx->ao_chain) { + ao_chain_reset_state(mpctx->ao_chain); + struct track *t = mpctx->ao_chain->track; + if (t && t->dec) + mp_decoder_wrapper_set_play_dir(t->dec, mpctx->play_dir); + } + mpctx->audio_status = mpctx->ao_chain ? STATUS_SYNCING : STATUS_EOF; + mpctx->delay = 0; + mpctx->logged_async_diff = -1; +} + +void uninit_audio_out(struct MPContext *mpctx) +{ + struct ao_chain *ao_c = mpctx->ao_chain; + if (ao_c) { + ao_c->ao_queue = NULL; + TA_FREEP(&ao_c->queue_filter); + ao_c->ao = NULL; + } + if (mpctx->ao) { + // Note: with gapless_audio, stop_play is not correctly set + if ((mpctx->opts->gapless_audio || mpctx->stop_play == AT_END_OF_FILE) && + ao_is_playing(mpctx->ao) && !get_internal_paused(mpctx)) + { + MP_VERBOSE(mpctx, "draining left over audio\n"); + ao_drain(mpctx->ao); + } + ao_uninit(mpctx->ao); + + mp_notify(mpctx, MPV_EVENT_AUDIO_RECONFIG, NULL); + } + mpctx->ao = NULL; + TA_FREEP(&mpctx->ao_filter_fmt); +} + +static void ao_chain_uninit(struct ao_chain *ao_c) +{ + struct track *track = ao_c->track; + if (track) { + assert(track->ao_c == ao_c); + track->ao_c = NULL; + if (ao_c->dec_src) + assert(track->dec->f->pins[0] == ao_c->dec_src); + talloc_free(track->dec->f); + track->dec = NULL; + } + + if (ao_c->filter_src) + mp_pin_disconnect(ao_c->filter_src); + + talloc_free(ao_c->filter->f); + talloc_free(ao_c->ao_filter); + talloc_free(ao_c); +} + +void uninit_audio_chain(struct MPContext *mpctx) +{ + if (mpctx->ao_chain) { + ao_chain_uninit(mpctx->ao_chain); + mpctx->ao_chain = NULL; + + mpctx->audio_status = STATUS_EOF; + + mp_notify(mpctx, MPV_EVENT_AUDIO_RECONFIG, NULL); + } +} + +static char *audio_config_to_str_buf(char *buf, size_t buf_sz, int rate, + int format, struct mp_chmap channels) +{ + char ch[128]; + mp_chmap_to_str_buf(ch, sizeof(ch), &channels); + char *hr_ch = mp_chmap_to_str_hr(&channels); + if (strcmp(hr_ch, ch) != 0) + mp_snprintf_cat(ch, sizeof(ch), " (%s)", hr_ch); + snprintf(buf, buf_sz, "%dHz %s %dch %s", rate, + ch, channels.num, af_fmt_to_str(format)); + return buf; +} + +// Decide whether on a format change, we should reinit the AO. +static bool keep_weak_gapless_format(struct mp_aframe *old, struct mp_aframe* new) +{ + bool res = false; + struct mp_aframe *new_mod = mp_aframe_new_ref(new); + MP_HANDLE_OOM(new_mod); + + // If the sample formats are compatible (== libswresample generally can + // convert them), keep the AO. On other changes, recreate it. + + int old_fmt = mp_aframe_get_format(old); + int new_fmt = mp_aframe_get_format(new); + + if (af_format_conversion_score(old_fmt, new_fmt) == INT_MIN) + goto done; // completely incompatible formats + + if (!mp_aframe_set_format(new_mod, old_fmt)) + goto done; + + res = mp_aframe_config_equals(old, new_mod); + +done: + talloc_free(new_mod); + return res; +} + +static void ao_chain_set_ao(struct ao_chain *ao_c, struct ao *ao) +{ + if (ao_c->ao != ao) { + assert(!ao_c->ao); + ao_c->ao = ao; + ao_c->ao_queue = ao_get_queue(ao_c->ao); + ao_c->queue_filter = mp_async_queue_create_filter(ao_c->ao_filter, + MP_PIN_IN, ao_c->ao_queue); + mp_async_queue_set_notifier(ao_c->queue_filter, ao_c->ao_filter); + // Make sure filtering never stops with frames stuck in access filter. + mp_filter_set_high_priority(ao_c->queue_filter, true); + audio_update_volume(ao_c->mpctx); + } + + if (ao_c->filter->ao_needs_update) + mp_output_chain_set_ao(ao_c->filter, ao_c->ao); + + mp_filter_wakeup(ao_c->ao_filter); +} + +static int reinit_audio_filters_and_output(struct MPContext *mpctx) +{ + struct MPOpts *opts = mpctx->opts; + struct ao_chain *ao_c = mpctx->ao_chain; + assert(ao_c); + struct track *track = ao_c->track; + + assert(ao_c->filter->ao_needs_update); + + // The "ideal" filter output format + struct mp_aframe *out_fmt = mp_aframe_new_ref(ao_c->filter->output_aformat); + MP_HANDLE_OOM(out_fmt); + + if (!mp_aframe_config_is_valid(out_fmt)) { + talloc_free(out_fmt); + goto init_error; + } + + if (af_fmt_is_pcm(mp_aframe_get_format(out_fmt))) { + if (opts->force_srate) + mp_aframe_set_rate(out_fmt, opts->force_srate); + if (opts->audio_output_format) + mp_aframe_set_format(out_fmt, opts->audio_output_format); + if (opts->audio_output_channels.num_chmaps == 1) + mp_aframe_set_chmap(out_fmt, &opts->audio_output_channels.chmaps[0]); + } + + // Weak gapless audio: if the filter output format is the same as the + // previous one, keep the AO and don't reinit anything. + // Strong gapless: always keep the AO + if ((mpctx->ao_filter_fmt && mpctx->ao && opts->gapless_audio < 0 && + keep_weak_gapless_format(mpctx->ao_filter_fmt, out_fmt)) || + (mpctx->ao && opts->gapless_audio > 0)) + { + ao_chain_set_ao(ao_c, mpctx->ao); + talloc_free(out_fmt); + return 0; + } + + // Wait until all played. + if (mpctx->ao && ao_is_playing(mpctx->ao)) { + talloc_free(out_fmt); + return 0; + } + // Format change during syncing. Force playback start early, then wait. + if (ao_c->ao_queue && mp_async_queue_get_frames(ao_c->ao_queue) && + mpctx->audio_status == STATUS_SYNCING) + { + mpctx->audio_status = STATUS_READY; + mp_wakeup_core(mpctx); + talloc_free(out_fmt); + return 0; + } + if (mpctx->audio_status == STATUS_READY) { + talloc_free(out_fmt); + return 0; + } + + uninit_audio_out(mpctx); + + int out_rate = mp_aframe_get_rate(out_fmt); + int out_format = mp_aframe_get_format(out_fmt); + struct mp_chmap out_channels = {0}; + mp_aframe_get_chmap(out_fmt, &out_channels); + + int ao_flags = 0; + bool spdif_fallback = af_fmt_is_spdif(out_format) && + ao_c->spdif_passthrough; + + if (opts->ao_null_fallback && !spdif_fallback) + ao_flags |= AO_INIT_NULL_FALLBACK; + + if (opts->audio_stream_silence) + ao_flags |= AO_INIT_STREAM_SILENCE; + + if (opts->audio_exclusive) + ao_flags |= AO_INIT_EXCLUSIVE; + + if (af_fmt_is_pcm(out_format)) { + if (!opts->audio_output_channels.set || + opts->audio_output_channels.auto_safe) + ao_flags |= AO_INIT_SAFE_MULTICHANNEL_ONLY; + + mp_chmap_sel_list(&out_channels, + opts->audio_output_channels.chmaps, + opts->audio_output_channels.num_chmaps); + } + + if (!has_video_track(mpctx)) + ao_flags |= AO_INIT_MEDIA_ROLE_MUSIC; + + mpctx->ao_filter_fmt = out_fmt; + + mpctx->ao = ao_init_best(mpctx->global, ao_flags, mp_wakeup_core_cb, + mpctx, mpctx->encode_lavc_ctx, out_rate, + out_format, out_channels); + + int ao_rate = 0; + int ao_format = 0; + struct mp_chmap ao_channels = {0}; + if (mpctx->ao) + ao_get_format(mpctx->ao, &ao_rate, &ao_format, &ao_channels); + + // Verify passthrough format was not changed. + if (mpctx->ao && af_fmt_is_spdif(out_format)) { + if (out_rate != ao_rate || out_format != ao_format || + !mp_chmap_equals(&out_channels, &ao_channels)) + { + MP_ERR(mpctx, "Passthrough format unsupported.\n"); + ao_uninit(mpctx->ao); + mpctx->ao = NULL; + } + } + + if (!mpctx->ao) { + // If spdif was used, try to fallback to PCM. + if (spdif_fallback && ao_c->track && ao_c->track->dec) { + MP_VERBOSE(mpctx, "Falling back to PCM output.\n"); + ao_c->spdif_passthrough = false; + ao_c->spdif_failed = true; + mp_decoder_wrapper_set_spdif_flag(ao_c->track->dec, false); + if (!mp_decoder_wrapper_reinit(ao_c->track->dec)) + goto init_error; + reset_audio_state(mpctx); + mp_output_chain_reset_harder(ao_c->filter); + mp_wakeup_core(mpctx); // reinit with new format next time + return 0; + } + + MP_ERR(mpctx, "Could not open/initialize audio device -> no sound.\n"); + mpctx->error_playing = MPV_ERROR_AO_INIT_FAILED; + goto init_error; + } + + char tmp[192]; + MP_INFO(mpctx, "AO: [%s] %s\n", ao_get_name(mpctx->ao), + audio_config_to_str_buf(tmp, sizeof(tmp), ao_rate, ao_format, + ao_channels)); + MP_VERBOSE(mpctx, "AO: Description: %s\n", ao_get_description(mpctx->ao)); + update_window_title(mpctx, true); + + ao_c->ao_resume_time = + opts->audio_wait_open > 0 ? mp_time_sec() + opts->audio_wait_open : 0; + + bool eof = mpctx->audio_status == STATUS_EOF; + ao_set_paused(mpctx->ao, get_internal_paused(mpctx), eof); + + ao_chain_set_ao(ao_c, mpctx->ao); + + audio_update_volume(mpctx); + + // Almost nonsensical hack to deal with certain format change scenarios. + if (mpctx->audio_status == STATUS_PLAYING) + ao_start(mpctx->ao); + + mp_wakeup_core(mpctx); + mp_notify(mpctx, MPV_EVENT_AUDIO_RECONFIG, NULL); + + return 0; + +init_error: + uninit_audio_chain(mpctx); + uninit_audio_out(mpctx); + error_on_track(mpctx, track); + return -1; +} + +int init_audio_decoder(struct MPContext *mpctx, struct track *track) +{ + assert(!track->dec); + if (!track->stream) + goto init_error; + + track->dec = mp_decoder_wrapper_create(mpctx->filter_root, track->stream); + if (!track->dec) + goto init_error; + + if (track->ao_c) + mp_decoder_wrapper_set_spdif_flag(track->dec, true); + + if (!mp_decoder_wrapper_reinit(track->dec)) + goto init_error; + + return 1; + +init_error: + if (track->sink) + mp_pin_disconnect(track->sink); + track->sink = NULL; + error_on_track(mpctx, track); + return 0; +} + +void reinit_audio_chain(struct MPContext *mpctx) +{ + struct track *track = NULL; + track = mpctx->current_track[0][STREAM_AUDIO]; + if (!track || !track->stream) { + if (!mpctx->encode_lavc_ctx) + uninit_audio_out(mpctx); + error_on_track(mpctx, track); + return; + } + reinit_audio_chain_src(mpctx, track); +} + +static const struct mp_filter_info ao_filter = { + .name = "ao", + .process = ao_process, +}; + +// (track=NULL creates a blank chain, used for lavfi-complex) +void reinit_audio_chain_src(struct MPContext *mpctx, struct track *track) +{ + assert(!mpctx->ao_chain); + + mp_notify(mpctx, MPV_EVENT_AUDIO_RECONFIG, NULL); + + struct ao_chain *ao_c = talloc_zero(NULL, struct ao_chain); + mpctx->ao_chain = ao_c; + ao_c->mpctx = mpctx; + ao_c->log = mpctx->log; + ao_c->filter = + mp_output_chain_create(mpctx->filter_root, MP_OUTPUT_CHAIN_AUDIO); + ao_c->spdif_passthrough = true; + ao_c->last_out_pts = MP_NOPTS_VALUE; + ao_c->delay = mpctx->opts->audio_delay; + + ao_c->ao_filter = mp_filter_create(mpctx->filter_root, &ao_filter); + if (!ao_c->filter || !ao_c->ao_filter) + goto init_error; + ao_c->ao_filter->priv = ao_c; + + mp_filter_add_pin(ao_c->ao_filter, MP_PIN_IN, "in"); + mp_pin_connect(ao_c->ao_filter->pins[0], ao_c->filter->f->pins[1]); + + if (track) { + ao_c->track = track; + track->ao_c = ao_c; + if (!init_audio_decoder(mpctx, track)) + goto init_error; + ao_c->dec_src = track->dec->f->pins[0]; + mp_pin_connect(ao_c->filter->f->pins[0], ao_c->dec_src); + } + + reset_audio_state(mpctx); + + if (recreate_audio_filters(mpctx) < 0) + goto init_error; + + if (mpctx->ao) + audio_update_volume(mpctx); + + mp_wakeup_core(mpctx); + return; + +init_error: + uninit_audio_chain(mpctx); + uninit_audio_out(mpctx); + error_on_track(mpctx, track); +} + +// Return pts value corresponding to the start point of audio written to the +// ao queue so far. +double written_audio_pts(struct MPContext *mpctx) +{ + return mpctx->ao_chain ? mpctx->ao_chain->last_out_pts : MP_NOPTS_VALUE; +} + +// Return pts value corresponding to currently playing audio. +double playing_audio_pts(struct MPContext *mpctx) +{ + double pts = written_audio_pts(mpctx); + if (pts == MP_NOPTS_VALUE || !mpctx->ao) + return pts; + return pts - mpctx->audio_speed * ao_get_delay(mpctx->ao); +} + +// This garbage is needed for untimed AOs. These consume audio infinitely fast, +// so try keeping approximate A/V sync by blocking audio transfer as needed. +static void update_throttle(struct MPContext *mpctx) +{ + struct ao_chain *ao_c = mpctx->ao_chain; + bool new_throttle = mpctx->audio_status == STATUS_PLAYING && + mpctx->delay > 0 && ao_c && ao_c->ao && + ao_untimed(ao_c->ao) && + mpctx->video_status != STATUS_EOF; + if (ao_c && new_throttle != ao_c->untimed_throttle) { + ao_c->untimed_throttle = new_throttle; + mp_wakeup_core(mpctx); + mp_filter_wakeup(ao_c->ao_filter); + } +} + +static void ao_process(struct mp_filter *f) +{ + struct ao_chain *ao_c = f->priv; + struct MPContext *mpctx = ao_c->mpctx; + + if (!ao_c->queue_filter) { + // This will eventually lead to the creation of the AO + queue, due + // to how f_output_chain and AO management works. + mp_pin_out_request_data(f->ppins[0]); + // Check for EOF with no data case, which is a mess because everything + // hates us. + struct mp_frame frame = mp_pin_out_read(f->ppins[0]); + if (frame.type == MP_FRAME_EOF) { + MP_VERBOSE(mpctx, "got EOF with no data before it\n"); + ao_c->out_eof = true; + mpctx->audio_status = STATUS_DRAINING; + mp_wakeup_core(mpctx); + } else if (frame.type) { + mp_pin_out_unread(f->ppins[0], frame); + } + return; + } + + // Due to mp_async_queue_set_notifier() this function is called when the + // queue becomes full. This affects state changes in the normal playloop, + // so wake it up. But avoid redundant wakeups during normal playback. + if (mpctx->audio_status != STATUS_PLAYING && + mp_async_queue_is_full(ao_c->ao_queue)) + mp_wakeup_core(mpctx); + + if (mpctx->audio_status == STATUS_SYNCING && !ao_c->start_pts_known) + return; + + if (ao_c->untimed_throttle) + return; + + if (!mp_pin_can_transfer_data(ao_c->queue_filter->pins[0], f->ppins[0])) + return; + + struct mp_frame frame = mp_pin_out_read(f->ppins[0]); + if (frame.type == MP_FRAME_AUDIO) { + struct mp_aframe *af = frame.data; + + double endpts = get_play_end_pts(mpctx); + if (endpts != MP_NOPTS_VALUE) { + endpts *= mpctx->play_dir; + // Avoid decoding and discarding the entire rest of the file. + if (mp_aframe_get_pts(af) >= endpts) { + mp_pin_out_unread(f->ppins[0], frame); + if (!ao_c->out_eof) { + ao_c->out_eof = true; + mp_pin_in_write(ao_c->queue_filter->pins[0], MP_EOF_FRAME); + } + return; + } + } + double startpts = mpctx->audio_status == STATUS_SYNCING ? + ao_c->start_pts : MP_NOPTS_VALUE; + mp_aframe_clip_timestamps(af, startpts, endpts); + + int samples = mp_aframe_get_size(af); + if (!samples) { + mp_filter_internal_mark_progress(f); + mp_frame_unref(&frame); + return; + } + + ao_c->out_eof = false; + + if (mpctx->audio_status == STATUS_DRAINING || + mpctx->audio_status == STATUS_EOF) + { + // If a new frame comes decoder/filter EOF, we should preferably + // call get_sync_pts() again, which (at least in obscure situations) + // may require us to wait a while until the sync PTS is known. Our + // code sucks and can't deal with that, so jump through a hoop to + // get things done in the correct order. + mp_pin_out_unread(f->ppins[0], frame); + ao_c->start_pts_known = false; + mpctx->audio_status = STATUS_SYNCING; + mp_wakeup_core(mpctx); + MP_VERBOSE(mpctx, "new audio frame after EOF\n"); + return; + } + + mpctx->shown_aframes += samples; + double real_samplerate = mp_aframe_get_rate(af) / mpctx->audio_speed; + if (mpctx->video_status != STATUS_EOF) + mpctx->delay += samples / real_samplerate; + ao_c->last_out_pts = mp_aframe_end_pts(af); + update_throttle(mpctx); + + // Gapless case: the AO is still playing from previous file. It makes + // no sense to wait, and in fact the "full queue" event we're waiting + // for may never happen, so start immediately. + // If the new audio starts "later" (big video sync offset), transfer + // of data is stopped somewhere else. + if (mpctx->audio_status == STATUS_SYNCING && ao_is_playing(ao_c->ao)) { + mpctx->audio_status = STATUS_READY; + mp_wakeup_core(mpctx); + MP_VERBOSE(mpctx, "previous audio still playing; continuing\n"); + } + + mp_pin_in_write(ao_c->queue_filter->pins[0], frame); + } else if (frame.type == MP_FRAME_EOF) { + MP_VERBOSE(mpctx, "audio filter EOF\n"); + + ao_c->out_eof = true; + mp_wakeup_core(mpctx); + + mp_pin_in_write(ao_c->queue_filter->pins[0], frame); + mp_filter_internal_mark_progress(f); + } else { + mp_frame_unref(&frame); + } +} + +void reload_audio_output(struct MPContext *mpctx) +{ + if (!mpctx->ao) + return; + + ao_reset(mpctx->ao); + uninit_audio_out(mpctx); + reinit_audio_filters(mpctx); // mostly to issue refresh seek + + struct ao_chain *ao_c = mpctx->ao_chain; + + if (ao_c) { + reset_audio_state(mpctx); + mp_output_chain_reset_harder(ao_c->filter); + } + + // Whether we can use spdif might have changed. If we failed to use spdif + // in the previous initialization, try it with spdif again (we'll fallback + // to PCM again if necessary). + if (ao_c && ao_c->track) { + struct mp_decoder_wrapper *dec = ao_c->track->dec; + if (dec && ao_c->spdif_failed) { + ao_c->spdif_passthrough = true; + ao_c->spdif_failed = false; + mp_decoder_wrapper_set_spdif_flag(ao_c->track->dec, true); + if (!mp_decoder_wrapper_reinit(dec)) { + MP_ERR(mpctx, "Error reinitializing audio.\n"); + error_on_track(mpctx, ao_c->track); + } + } + } + + mp_wakeup_core(mpctx); +} + +// Returns audio start pts for seeking or video sync. +// Returns false if PTS is not known yet. +static bool get_sync_pts(struct MPContext *mpctx, double *pts) +{ + struct MPOpts *opts = mpctx->opts; + + *pts = MP_NOPTS_VALUE; + + if (!opts->initial_audio_sync) + return true; + + bool sync_to_video = mpctx->vo_chain && mpctx->video_status != STATUS_EOF && + !mpctx->vo_chain->is_sparse; + + if (sync_to_video) { + if (mpctx->video_status < STATUS_READY) + return false; // wait until we know a video PTS + if (mpctx->video_pts != MP_NOPTS_VALUE) + *pts = mpctx->video_pts - opts->audio_delay; + } else if (mpctx->hrseek_active) { + *pts = mpctx->hrseek_pts; + } else { + // If audio-only is enabled mid-stream during playback, sync accordingly. + *pts = mpctx->playback_pts; + } + + return true; +} + +// Look whether audio can be started yet - if audio has to start some time +// after video. +// Caller needs to ensure mpctx->restart_complete is OK +void audio_start_ao(struct MPContext *mpctx) +{ + struct ao_chain *ao_c = mpctx->ao_chain; + if (!ao_c || !ao_c->ao || mpctx->audio_status != STATUS_READY) + return; + double pts = MP_NOPTS_VALUE; + if (!get_sync_pts(mpctx, &pts)) + return; + double apts = playing_audio_pts(mpctx); // (basically including mpctx->delay) + if (pts != MP_NOPTS_VALUE && apts != MP_NOPTS_VALUE && pts < apts && + mpctx->video_status != STATUS_EOF) + { + double diff = (apts - pts) / mpctx->opts->playback_speed; + if (!get_internal_paused(mpctx)) + mp_set_timeout(mpctx, diff); + if (mpctx->logged_async_diff != diff) { + MP_VERBOSE(mpctx, "delaying audio start %f vs. %f, diff=%f\n", + apts, pts, diff); + mpctx->logged_async_diff = diff; + } + return; + } + + MP_VERBOSE(mpctx, "starting audio playback\n"); + ao_start(ao_c->ao); + mpctx->audio_status = STATUS_PLAYING; + if (ao_c->out_eof) { + mpctx->audio_status = STATUS_DRAINING; + MP_VERBOSE(mpctx, "audio draining\n"); + } + ao_c->underrun = false; + mpctx->logged_async_diff = -1; + mp_wakeup_core(mpctx); +} + +void fill_audio_out_buffers(struct MPContext *mpctx) +{ + struct MPOpts *opts = mpctx->opts; + + if (mpctx->ao && ao_query_and_reset_events(mpctx->ao, AO_EVENT_RELOAD)) + reload_audio_output(mpctx); + + if (mpctx->ao && ao_query_and_reset_events(mpctx->ao, + AO_EVENT_INITIAL_UNBLOCK)) + ao_unblock(mpctx->ao); + + update_throttle(mpctx); + + struct ao_chain *ao_c = mpctx->ao_chain; + if (!ao_c) + return; + + if (ao_c->filter->failed_output_conversion) { + error_on_track(mpctx, ao_c->track); + return; + } + + if (ao_c->filter->ao_needs_update) { + if (reinit_audio_filters_and_output(mpctx) < 0) + return; + } + + if (mpctx->vo_chain && ao_c->track && ao_c->track->dec && + mp_decoder_wrapper_get_pts_reset(ao_c->track->dec)) + { + MP_WARN(mpctx, "Reset playback due to audio timestamp reset.\n"); + reset_playback_state(mpctx); + mp_wakeup_core(mpctx); + } + + if (mpctx->audio_status == STATUS_SYNCING) { + double pts; + bool ok = get_sync_pts(mpctx, &pts); + + // If the AO is still playing from the previous file (due to gapless), + // but if video is active, this may not work if audio starts later than + // video, and gapless has no advantages anyway. So block doing anything + // until the old audio is fully played. + // (Buggy if AO underruns.) + if (mpctx->ao && ao_is_playing(mpctx->ao) && + mpctx->video_status != STATUS_EOF) { + MP_VERBOSE(mpctx, "blocked, waiting for old audio to play\n"); + ok = false; + } + + if (ao_c->start_pts_known != ok || ao_c->start_pts != pts) { + ao_c->start_pts_known = ok; + ao_c->start_pts = pts; + mp_filter_wakeup(ao_c->ao_filter); + } + + if (ao_c->ao && mp_async_queue_is_full(ao_c->ao_queue)) { + mpctx->audio_status = STATUS_READY; + mp_wakeup_core(mpctx); + MP_VERBOSE(mpctx, "audio ready\n"); + } else if (ao_c->out_eof) { + // Force playback start early. + mpctx->audio_status = STATUS_READY; + mp_wakeup_core(mpctx); + MP_VERBOSE(mpctx, "audio ready (and EOF)\n"); + } + } + + if (ao_c->ao && !ao_is_playing(ao_c->ao) && !ao_c->underrun && + (mpctx->audio_status == STATUS_PLAYING || + mpctx->audio_status == STATUS_DRAINING)) + { + // Should be playing, but somehow isn't. + + if (ao_c->out_eof && !mp_async_queue_get_frames(ao_c->ao_queue)) { + MP_VERBOSE(mpctx, "AO signaled EOF (while in state %s)\n", + mp_status_str(mpctx->audio_status)); + mpctx->audio_status = STATUS_EOF; + mp_wakeup_core(mpctx); + // stops untimed AOs, stops pull AOs from streaming silence + ao_reset(ao_c->ao); + } else { + if (!ao_c->ao_underrun) { + MP_WARN(mpctx, "Audio device underrun detected.\n"); + ao_c->ao_underrun = true; + mp_wakeup_core(mpctx); + ao_c->underrun = true; + } + + // Wait until buffers are filled before recovering underrun. + if (ao_c->out_eof || mp_async_queue_is_full(ao_c->ao_queue)) { + MP_VERBOSE(mpctx, "restarting audio after underrun\n"); + ao_start(mpctx->ao_chain->ao); + ao_c->ao_underrun = false; + ao_c->underrun = false; + mp_wakeup_core(mpctx); + } + } + } + + if (mpctx->audio_status == STATUS_PLAYING && ao_c->out_eof) { + mpctx->audio_status = STATUS_DRAINING; + MP_VERBOSE(mpctx, "audio draining\n"); + mp_wakeup_core(mpctx); + } + + if (mpctx->audio_status == STATUS_DRAINING) { + // Wait until the AO has played all queued data. In the gapless case, + // we trigger EOF immediately, and let it play asynchronously. + if (!ao_c->ao || (!ao_is_playing(ao_c->ao) || + (opts->gapless_audio && !ao_untimed(ao_c->ao)))) + { + MP_VERBOSE(mpctx, "audio EOF reached\n"); + mpctx->audio_status = STATUS_EOF; + mp_wakeup_core(mpctx); + } + } + + if (mpctx->restart_complete) + audio_start_ao(mpctx); // in case it got delayed +} + +// Drop data queued for output, or which the AO is currently outputting. +void clear_audio_output_buffers(struct MPContext *mpctx) +{ + if (mpctx->ao) + ao_reset(mpctx->ao); +} |