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-rw-r--r--src/output_thread.c572
1 files changed, 463 insertions, 109 deletions
diff --git a/src/output_thread.c b/src/output_thread.c
index 035cf99c1..380956fac 100644
--- a/src/output_thread.c
+++ b/src/output_thread.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * Copyright (C) 2003-2010 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
@@ -17,12 +17,18 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#include "config.h"
#include "output_thread.h"
#include "output_api.h"
#include "output_internal.h"
#include "chunk.h"
#include "pipe.h"
#include "player_control.h"
+#include "pcm_mix.h"
+#include "filter_plugin.h"
+#include "filter/convert_filter_plugin.h"
+#include "filter/replay_gain_filter_plugin.h"
+#include "mpd_error.h"
#include <glib.h>
@@ -37,71 +43,423 @@ static void ao_command_finished(struct audio_output *ao)
{
assert(ao->command != AO_COMMAND_NONE);
ao->command = AO_COMMAND_NONE;
+
+ g_mutex_unlock(ao->mutex);
notify_signal(&audio_output_client_notify);
+ g_mutex_lock(ao->mutex);
+}
+
+static bool
+ao_enable(struct audio_output *ao)
+{
+ GError *error = NULL;
+ bool success;
+
+ if (ao->really_enabled)
+ return true;
+
+ g_mutex_unlock(ao->mutex);
+ success = ao_plugin_enable(ao->plugin, ao->data, &error);
+ g_mutex_lock(ao->mutex);
+ if (!success) {
+ g_warning("Failed to enable \"%s\" [%s]: %s\n",
+ ao->name, ao->plugin->name, error->message);
+ g_error_free(error);
+ return false;
+ }
+
+ ao->really_enabled = true;
+ return true;
+}
+
+static void
+ao_close(struct audio_output *ao, bool drain);
+
+static void
+ao_disable(struct audio_output *ao)
+{
+ if (ao->open)
+ ao_close(ao, false);
+
+ if (ao->really_enabled) {
+ ao->really_enabled = false;
+
+ g_mutex_unlock(ao->mutex);
+ ao_plugin_disable(ao->plugin, ao->data);
+ g_mutex_lock(ao->mutex);
+ }
+}
+
+static const struct audio_format *
+ao_filter_open(struct audio_output *ao,
+ struct audio_format *audio_format,
+ GError **error_r)
+{
+ /* the replay_gain filter cannot fail here */
+ if (ao->replay_gain_filter != NULL)
+ filter_open(ao->replay_gain_filter, audio_format, error_r);
+ if (ao->other_replay_gain_filter != NULL)
+ filter_open(ao->other_replay_gain_filter, audio_format,
+ error_r);
+
+ const struct audio_format *af
+ = filter_open(ao->filter, audio_format, error_r);
+ if (af == NULL) {
+ if (ao->replay_gain_filter != NULL)
+ filter_close(ao->replay_gain_filter);
+ if (ao->other_replay_gain_filter != NULL)
+ filter_close(ao->other_replay_gain_filter);
+ }
+
+ return af;
+}
+
+static void
+ao_filter_close(struct audio_output *ao)
+{
+ if (ao->replay_gain_filter != NULL)
+ filter_close(ao->replay_gain_filter);
+ if (ao->other_replay_gain_filter != NULL)
+ filter_close(ao->other_replay_gain_filter);
+
+ filter_close(ao->filter);
+}
+
+static void
+ao_open(struct audio_output *ao)
+{
+ bool success;
+ GError *error = NULL;
+ const struct audio_format *filter_audio_format;
+ struct audio_format_string af_string;
+
+ assert(!ao->open);
+ assert(ao->pipe != NULL);
+ assert(ao->chunk == NULL);
+
+ if (ao->fail_timer != NULL) {
+ /* this can only happen when this
+ output thread fails while
+ audio_output_open() is run in the
+ player thread */
+ g_timer_destroy(ao->fail_timer);
+ ao->fail_timer = NULL;
+ }
+
+ /* enable the device (just in case the last enable has failed) */
+
+ if (!ao_enable(ao))
+ /* still no luck */
+ return;
+
+ /* open the filter */
+
+ filter_audio_format = ao_filter_open(ao, &ao->in_audio_format, &error);
+ if (filter_audio_format == NULL) {
+ g_warning("Failed to open filter for \"%s\" [%s]: %s",
+ ao->name, ao->plugin->name, error->message);
+ g_error_free(error);
+
+ ao->fail_timer = g_timer_new();
+ return;
+ }
+
+ ao->out_audio_format = *filter_audio_format;
+ audio_format_mask_apply(&ao->out_audio_format,
+ &ao->config_audio_format);
+
+ g_mutex_unlock(ao->mutex);
+ success = ao_plugin_open(ao->plugin, ao->data,
+ &ao->out_audio_format,
+ &error);
+ g_mutex_lock(ao->mutex);
+
+ assert(!ao->open);
+
+ if (!success) {
+ g_warning("Failed to open \"%s\" [%s]: %s",
+ ao->name, ao->plugin->name, error->message);
+ g_error_free(error);
+
+ ao_filter_close(ao);
+ ao->fail_timer = g_timer_new();
+ return;
+ }
+
+ convert_filter_set(ao->convert_filter, &ao->out_audio_format);
+
+ ao->open = true;
+
+ g_debug("opened plugin=%s name=\"%s\" "
+ "audio_format=%s",
+ ao->plugin->name, ao->name,
+ audio_format_to_string(&ao->out_audio_format, &af_string));
+
+ if (!audio_format_equals(&ao->in_audio_format,
+ &ao->out_audio_format))
+ g_debug("converting from %s",
+ audio_format_to_string(&ao->in_audio_format,
+ &af_string));
}
static void
-ao_close(struct audio_output *ao)
+ao_close(struct audio_output *ao, bool drain)
{
assert(ao->open);
ao->pipe = NULL;
- g_mutex_lock(ao->mutex);
ao->chunk = NULL;
ao->open = false;
+
g_mutex_unlock(ao->mutex);
+ if (drain)
+ ao_plugin_drain(ao->plugin, ao->data);
+ else
+ ao_plugin_cancel(ao->plugin, ao->data);
+
ao_plugin_close(ao->plugin, ao->data);
- pcm_convert_deinit(&ao->convert_state);
+ ao_filter_close(ao);
+
+ g_mutex_lock(ao->mutex);
g_debug("closed plugin=%s name=\"%s\"", ao->plugin->name, ao->name);
}
-static bool
-ao_play_chunk(struct audio_output *ao, const struct music_chunk *chunk)
+static void
+ao_reopen_filter(struct audio_output *ao)
{
- const char *data = chunk->data;
- size_t size = chunk->length;
+ const struct audio_format *filter_audio_format;
GError *error = NULL;
+ ao_filter_close(ao);
+ filter_audio_format = ao_filter_open(ao, &ao->in_audio_format, &error);
+ if (filter_audio_format == NULL) {
+ g_warning("Failed to open filter for \"%s\" [%s]: %s",
+ ao->name, ao->plugin->name, error->message);
+ g_error_free(error);
+
+ /* this is a little code duplication fro ao_close(),
+ but we cannot call this function because we must
+ not call filter_close(ao->filter) again */
+
+ ao->pipe = NULL;
+
+ ao->chunk = NULL;
+ ao->open = false;
+ ao->fail_timer = g_timer_new();
+
+ g_mutex_unlock(ao->mutex);
+ ao_plugin_close(ao->plugin, ao->data);
+ g_mutex_lock(ao->mutex);
+
+ return;
+ }
+
+ convert_filter_set(ao->convert_filter, &ao->out_audio_format);
+}
+
+static void
+ao_reopen(struct audio_output *ao)
+{
+ if (!audio_format_fully_defined(&ao->config_audio_format)) {
+ if (ao->open) {
+ const struct music_pipe *mp = ao->pipe;
+ ao_close(ao, true);
+ ao->pipe = mp;
+ }
+
+ /* no audio format is configured: copy in->out, let
+ the output's open() method determine the effective
+ out_audio_format */
+ ao->out_audio_format = ao->in_audio_format;
+ audio_format_mask_apply(&ao->out_audio_format,
+ &ao->config_audio_format);
+ }
+
+ if (ao->open)
+ /* the audio format has changed, and all filters have
+ to be reconfigured */
+ ao_reopen_filter(ao);
+ else
+ ao_open(ao);
+}
+
+/**
+ * Wait until the output's delay reaches zero.
+ *
+ * @return true if playback should be continued, false if a command
+ * was issued
+ */
+static bool
+ao_wait(struct audio_output *ao)
+{
+ while (true) {
+ unsigned delay = ao_plugin_delay(ao->plugin, ao->data);
+ if (delay == 0)
+ return true;
+
+ GTimeVal tv;
+ g_get_current_time(&tv);
+ g_time_val_add(&tv, delay * 1000);
+ g_cond_timed_wait(ao->cond, ao->mutex, &tv);
+
+ if (ao->command != AO_COMMAND_NONE)
+ return false;
+ }
+}
+
+static const char *
+ao_chunk_data(struct audio_output *ao, const struct music_chunk *chunk,
+ struct filter *replay_gain_filter,
+ unsigned *replay_gain_serial_p,
+ size_t *length_r)
+{
+ assert(chunk != NULL);
assert(!music_chunk_is_empty(chunk));
assert(music_chunk_check_format(chunk, &ao->in_audio_format));
- assert(size % audio_format_frame_size(&ao->in_audio_format) == 0);
- if (chunk->tag != NULL)
+ const char *data = chunk->data;
+ size_t length = chunk->length;
+
+ (void)ao;
+
+ assert(length % audio_format_frame_size(&ao->in_audio_format) == 0);
+
+ if (length > 0 && replay_gain_filter != NULL) {
+ if (chunk->replay_gain_serial != *replay_gain_serial_p) {
+ replay_gain_filter_set_info(replay_gain_filter,
+ chunk->replay_gain_serial != 0
+ ? &chunk->replay_gain_info
+ : NULL);
+ *replay_gain_serial_p = chunk->replay_gain_serial;
+ }
+
+ GError *error = NULL;
+ data = filter_filter(replay_gain_filter, data, length,
+ &length, &error);
+ if (data == NULL) {
+ g_warning("\"%s\" [%s] failed to filter: %s",
+ ao->name, ao->plugin->name, error->message);
+ g_error_free(error);
+ return NULL;
+ }
+ }
+
+ *length_r = length;
+ return data;
+}
+
+static const char *
+ao_filter_chunk(struct audio_output *ao, const struct music_chunk *chunk,
+ size_t *length_r)
+{
+ GError *error = NULL;
+
+ size_t length;
+ const char *data = ao_chunk_data(ao, chunk, ao->replay_gain_filter,
+ &ao->replay_gain_serial, &length);
+ if (data == NULL)
+ return NULL;
+
+ if (length == 0) {
+ /* empty chunk, nothing to do */
+ *length_r = 0;
+ return data;
+ }
+
+ /* cross-fade */
+
+ if (chunk->other != NULL) {
+ size_t other_length;
+ const char *other_data =
+ ao_chunk_data(ao, chunk->other,
+ ao->other_replay_gain_filter,
+ &ao->other_replay_gain_serial,
+ &other_length);
+ if (other_data == NULL)
+ return NULL;
+
+ if (other_length == 0) {
+ *length_r = 0;
+ return data;
+ }
+
+ /* if the "other" chunk is longer, then that trailer
+ is used as-is, without mixing; it is part of the
+ "next" song being faded in, and if there's a rest,
+ it means cross-fading ends here */
+
+ if (length > other_length)
+ length = other_length;
+
+ char *dest = pcm_buffer_get(&ao->cross_fade_buffer,
+ other_length);
+ memcpy(dest, other_data, other_length);
+ pcm_mix(dest, data, length, &ao->in_audio_format,
+ 1.0 - chunk->mix_ratio);
+
+ data = dest;
+ length = other_length;
+ }
+
+ /* apply filter chain */
+
+ data = filter_filter(ao->filter, data, length, &length, &error);
+ if (data == NULL) {
+ g_warning("\"%s\" [%s] failed to filter: %s",
+ ao->name, ao->plugin->name, error->message);
+ g_error_free(error);
+ return NULL;
+ }
+
+ *length_r = length;
+ return data;
+}
+
+static bool
+ao_play_chunk(struct audio_output *ao, const struct music_chunk *chunk)
+{
+ GError *error = NULL;
+
+ assert(ao != NULL);
+ assert(ao->filter != NULL);
+
+ if (chunk->tag != NULL) {
+ g_mutex_unlock(ao->mutex);
ao_plugin_send_tag(ao->plugin, ao->data, chunk->tag);
+ g_mutex_lock(ao->mutex);
+ }
- if (size == 0)
- return true;
+ size_t size;
+ const char *data = ao_filter_chunk(ao, chunk, &size);
+ if (data == NULL) {
+ ao_close(ao, false);
- if (!audio_format_equals(&ao->in_audio_format,
- &ao->out_audio_format)) {
- data = pcm_convert(&ao->convert_state,
- &ao->in_audio_format, data, size,
- &ao->out_audio_format, &size);
-
- /* under certain circumstances, pcm_convert() may
- return an empty buffer - this condition should be
- investigated further, but for now, do this check as
- a workaround: */
- if (data == NULL)
- return true;
+ /* don't automatically reopen this device for 10
+ seconds */
+ ao->fail_timer = g_timer_new();
+ return false;
}
while (size > 0 && ao->command == AO_COMMAND_NONE) {
size_t nbytes;
+ if (!ao_wait(ao))
+ break;
+
+ g_mutex_unlock(ao->mutex);
nbytes = ao_plugin_play(ao->plugin, ao->data, data, size,
&error);
+ g_mutex_lock(ao->mutex);
if (nbytes == 0) {
/* play()==0 means failure */
g_warning("\"%s\" [%s] failed to play: %s",
ao->name, ao->plugin->name, error->message);
g_error_free(error);
- ao_plugin_cancel(ao->plugin, ao->data);
- ao_close(ao);
+ ao_close(ao, false);
/* don't automatically reopen this device for
10 seconds */
@@ -124,32 +482,45 @@ ao_play_chunk(struct audio_output *ao, const struct music_chunk *chunk)
return true;
}
-static void ao_play(struct audio_output *ao)
+static const struct music_chunk *
+ao_next_chunk(struct audio_output *ao)
+{
+ return ao->chunk != NULL
+ /* continue the previous play() call */
+ ? ao->chunk->next
+ /* get the first chunk from the pipe */
+ : music_pipe_peek(ao->pipe);
+}
+
+/**
+ * Plays all remaining chunks, until the tail of the pipe has been
+ * reached (and no more chunks are queued), or until a command is
+ * received.
+ *
+ * @return true if at least one chunk has been available, false if the
+ * tail of the pipe was already reached
+ */
+static bool
+ao_play(struct audio_output *ao)
{
bool success;
const struct music_chunk *chunk;
assert(ao->pipe != NULL);
- g_mutex_lock(ao->mutex);
- chunk = ao->chunk;
- if (chunk != NULL)
- /* continue the previous play() call */
- chunk = chunk->next;
- else
- chunk = music_pipe_peek(ao->pipe);
+ chunk = ao_next_chunk(ao);
+ if (chunk == NULL)
+ /* no chunk available */
+ return false;
+
ao->chunk_finished = false;
while (chunk != NULL && ao->command == AO_COMMAND_NONE) {
assert(!ao->chunk_finished);
ao->chunk = chunk;
- g_mutex_unlock(ao->mutex);
success = ao_play_chunk(ao, chunk);
-
- g_mutex_lock(ao->mutex);
-
if (!success) {
assert(ao->chunk == NULL);
break;
@@ -160,23 +531,35 @@ static void ao_play(struct audio_output *ao)
}
ao->chunk_finished = true;
+
g_mutex_unlock(ao->mutex);
+ player_lock_signal();
+ g_mutex_lock(ao->mutex);
- notify_signal(&pc.notify);
+ return true;
}
static void ao_pause(struct audio_output *ao)
{
bool ret;
+ g_mutex_unlock(ao->mutex);
ao_plugin_cancel(ao->plugin, ao->data);
+ g_mutex_lock(ao->mutex);
+
ao->pause = true;
ao_command_finished(ao);
do {
+ if (!ao_wait(ao))
+ break;
+
+ g_mutex_unlock(ao->mutex);
ret = ao_plugin_pause(ao->plugin, ao->data);
+ g_mutex_lock(ao->mutex);
+
if (!ret) {
- ao_close(ao);
+ ao_close(ao, false);
break;
}
} while (ao->command == AO_COMMAND_NONE);
@@ -187,64 +570,31 @@ static void ao_pause(struct audio_output *ao)
static gpointer audio_output_task(gpointer arg)
{
struct audio_output *ao = arg;
- bool ret;
- GError *error;
+
+ g_mutex_lock(ao->mutex);
while (1) {
switch (ao->command) {
case AO_COMMAND_NONE:
break;
- case AO_COMMAND_OPEN:
- assert(!ao->open);
- assert(ao->pipe != NULL);
- assert(ao->chunk == NULL);
-
- if (ao->fail_timer != NULL) {
- /* this can only happen when this
- output thread fails while
- audio_output_open() is run in the
- player thread */
- g_timer_destroy(ao->fail_timer);
- ao->fail_timer = NULL;
- }
-
- error = NULL;
- ret = ao_plugin_open(ao->plugin, ao->data,
- &ao->out_audio_format,
- &error);
-
- assert(!ao->open);
- if (ret) {
- pcm_convert_init(&ao->convert_state);
+ case AO_COMMAND_ENABLE:
+ ao_enable(ao);
+ ao_command_finished(ao);
+ break;
- g_mutex_lock(ao->mutex);
- ao->open = true;
- g_mutex_unlock(ao->mutex);
+ case AO_COMMAND_DISABLE:
+ ao_disable(ao);
+ ao_command_finished(ao);
+ break;
- g_debug("opened plugin=%s name=\"%s\" "
- "audio_format=%u:%u:%u",
- ao->plugin->name,
- ao->name,
- ao->out_audio_format.sample_rate,
- ao->out_audio_format.bits,
- ao->out_audio_format.channels);
-
- if (!audio_format_equals(&ao->in_audio_format,
- &ao->out_audio_format))
- g_debug("converting from %u:%u:%u",
- ao->in_audio_format.sample_rate,
- ao->in_audio_format.bits,
- ao->in_audio_format.channels);
- } else {
- g_warning("Failed to open \"%s\" [%s]: %s",
- ao->name, ao->plugin->name,
- error->message);
- g_error_free(error);
-
- ao->fail_timer = g_timer_new();
- }
+ case AO_COMMAND_OPEN:
+ ao_open(ao);
+ ao_command_finished(ao);
+ break;
+ case AO_COMMAND_REOPEN:
+ ao_reopen(ao);
ao_command_finished(ao);
break;
@@ -252,11 +602,7 @@ static gpointer audio_output_task(gpointer arg)
assert(ao->open);
assert(ao->pipe != NULL);
- ao->pipe = NULL;
- ao->chunk = NULL;
-
- ao_plugin_cancel(ao->plugin, ao->data);
- ao_close(ao);
+ ao_close(ao, false);
ao_command_finished(ao);
break;
@@ -277,38 +623,46 @@ static gpointer audio_output_task(gpointer arg)
the new command first */
continue;
+ case AO_COMMAND_DRAIN:
+ if (ao->open) {
+ assert(ao->chunk == NULL);
+ assert(music_pipe_peek(ao->pipe) == NULL);
+
+ g_mutex_unlock(ao->mutex);
+ ao_plugin_drain(ao->plugin, ao->data);
+ g_mutex_lock(ao->mutex);
+ }
+
+ ao_command_finished(ao);
+ continue;
+
case AO_COMMAND_CANCEL:
ao->chunk = NULL;
if (ao->open)
ao_plugin_cancel(ao->plugin, ao->data);
-
- /* we must clear the notification now, because
- the notify_wait() call below must wait
- until audio_output_all_cancel() has cleared
- the pipe; if another notification happens
- to be still pending, we get a race
- condition with a crash or an assertion
- failure */
- notify_clear(&ao->notify);
-
ao_command_finished(ao);
/* the player thread will now clear our music
pipe - wait for a notify, to give it some
time */
- notify_wait(&ao->notify);
+ if (ao->command == AO_COMMAND_NONE)
+ g_cond_wait(ao->cond, ao->mutex);
continue;
case AO_COMMAND_KILL:
ao->chunk = NULL;
ao_command_finished(ao);
+ g_mutex_unlock(ao->mutex);
return NULL;
}
- if (ao->open)
- ao_play(ao);
+ if (ao->open && ao_play(ao))
+ /* don't wait for an event if there are more
+ chunks in the pipe */
+ continue;
- notify_wait(&ao->notify);
+ if (ao->command == AO_COMMAND_NONE)
+ g_cond_wait(ao->cond, ao->mutex);
}
}
@@ -319,5 +673,5 @@ void audio_output_thread_start(struct audio_output *ao)
assert(ao->command == AO_COMMAND_NONE);
if (!(ao->thread = g_thread_create(audio_output_task, ao, true, &e)))
- g_error("Failed to spawn output task: %s\n", e->message);
+ MPD_ERROR("Failed to spawn output task: %s\n", e->message);
}