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authorMax Kellermann <max@duempel.org>2009-02-10 18:51:49 +0100
committerMax Kellermann <max@duempel.org>2009-02-10 18:51:49 +0100
commita3a6eefcfe6f8b8129ac36a70243ca90e651a7fc (patch)
tree8f30130c658f5f819da2ec4f659159654b741aba /src/output_all.c
parente7505381eb4fa708afa7de6fd50f29736ccf3d5e (diff)
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audio: moved code to output_all.c
Moved code which deals with all audio outputs at once into a separate library.
Diffstat (limited to '')
-rw-r--r--src/output_all.c270
1 files changed, 270 insertions, 0 deletions
diff --git a/src/output_all.c b/src/output_all.c
new file mode 100644
index 000000000..dff84e04a
--- /dev/null
+++ b/src/output_all.c
@@ -0,0 +1,270 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "output_all.h"
+#include "output_internal.h"
+#include "output_control.h"
+
+#include <assert.h>
+
+static struct audio_format input_audio_format;
+
+static struct audio_output *audioOutputArray;
+static unsigned int audioOutputArraySize;
+
+unsigned int audio_output_count(void)
+{
+ return audioOutputArraySize;
+}
+
+struct audio_output *
+audio_output_get(unsigned i)
+{
+ assert(i < audioOutputArraySize);
+
+ return &audioOutputArray[i];
+}
+
+struct audio_output *
+audio_output_find(const char *name)
+{
+ for (unsigned i = 0; i < audioOutputArraySize; ++i) {
+ struct audio_output *ao = audio_output_get(i);
+
+ if (strcmp(ao->name, name) == 0)
+ return ao;
+ }
+
+ /* name not found */
+ return NULL;
+}
+
+static unsigned
+audio_output_config_count(void)
+{
+ unsigned int nr = 0;
+ const struct config_param *param = NULL;
+
+ while ((param = config_get_next_param(CONF_AUDIO_OUTPUT, param)))
+ nr++;
+ if (!nr)
+ nr = 1; /* we'll always have at least one device */
+ return nr;
+}
+
+/* make sure initPlayerData is called before this function!! */
+void initAudioDriver(void)
+{
+ const struct config_param *param = NULL;
+ unsigned int i;
+
+ notify_init(&audio_output_client_notify);
+
+ audioOutputArraySize = audio_output_config_count();
+ audioOutputArray = g_new(struct audio_output, audioOutputArraySize);
+
+ for (i = 0; i < audioOutputArraySize; i++)
+ {
+ struct audio_output *output = &audioOutputArray[i];
+ unsigned int j;
+
+ param = config_get_next_param(CONF_AUDIO_OUTPUT, param);
+
+ /* only allow param to be NULL if there just one audioOutput */
+ assert(param || (audioOutputArraySize == 1));
+
+ if (!audio_output_init(output, param)) {
+ if (param)
+ {
+ g_error("problems configuring output device "
+ "defined at line %i\n", param->line);
+ }
+ else
+ {
+ g_error("No audio_output specified and unable to "
+ "detect a default audio output device\n");
+ }
+ }
+
+ /* require output names to be unique: */
+ for (j = 0; j < i; j++) {
+ if (!strcmp(output->name, audioOutputArray[j].name)) {
+ g_error("output devices with identical "
+ "names: %s\n", output->name);
+ }
+ }
+ }
+}
+
+void finishAudioDriver(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < audioOutputArraySize; i++) {
+ audio_output_finish(&audioOutputArray[i]);
+ }
+
+ g_free(audioOutputArray);
+ audioOutputArray = NULL;
+ audioOutputArraySize = 0;
+
+ notify_deinit(&audio_output_client_notify);
+}
+
+static void audio_output_wait_all(void)
+{
+ unsigned i;
+
+ while (1) {
+ int finished = 1;
+
+ for (i = 0; i < audioOutputArraySize; ++i)
+ if (audio_output_is_open(&audioOutputArray[i]) &&
+ !audio_output_command_is_finished(&audioOutputArray[i]))
+ finished = 0;
+
+ if (finished)
+ break;
+
+ notify_wait(&audio_output_client_notify);
+ };
+}
+
+static void syncAudioDeviceStates(void)
+{
+ unsigned int i;
+
+ if (!audio_format_defined(&input_audio_format))
+ return;
+
+ for (i = 0; i < audioOutputArraySize; ++i)
+ audio_output_update(&audioOutputArray[i], &input_audio_format);
+}
+
+bool playAudio(const char *buffer, size_t length)
+{
+ bool ret = false;
+ unsigned int i;
+
+ assert(length > 0);
+ /* no partial frames allowed */
+ assert((length % audio_format_frame_size(&input_audio_format)) == 0);
+
+ syncAudioDeviceStates();
+
+ for (i = 0; i < audioOutputArraySize; ++i)
+ if (audio_output_is_open(&audioOutputArray[i]))
+ audio_output_play(&audioOutputArray[i],
+ buffer, length);
+
+ while (true) {
+ bool finished = true;
+
+ for (i = 0; i < audioOutputArraySize; ++i) {
+ struct audio_output *ao = &audioOutputArray[i];
+
+ if (!audio_output_is_open(ao))
+ continue;
+
+ if (audio_output_command_is_finished(ao))
+ ret = true;
+ else {
+ finished = false;
+ audio_output_signal(ao);
+ }
+ }
+
+ if (finished)
+ break;
+
+ notify_wait(&audio_output_client_notify);
+ };
+
+ return ret;
+}
+
+bool openAudioDevice(const struct audio_format *audioFormat)
+{
+ bool ret = false;
+ unsigned int i;
+
+ if (!audioOutputArray)
+ return false;
+
+ if (audioFormat != NULL)
+ input_audio_format = *audioFormat;
+
+ syncAudioDeviceStates();
+
+ for (i = 0; i < audioOutputArraySize; ++i) {
+ if (audioOutputArray[i].open)
+ ret = true;
+ }
+
+ if (!ret)
+ /* close all devices if there was an error */
+ closeAudioDevice();
+
+ return ret;
+}
+
+void audio_output_pause_all(void)
+{
+ unsigned int i;
+
+ syncAudioDeviceStates();
+
+ for (i = 0; i < audioOutputArraySize; ++i)
+ if (audio_output_is_open(&audioOutputArray[i]))
+ audio_output_pause(&audioOutputArray[i]);
+
+ audio_output_wait_all();
+}
+
+void dropBufferedAudio(void)
+{
+ unsigned int i;
+
+ syncAudioDeviceStates();
+
+ for (i = 0; i < audioOutputArraySize; ++i) {
+ if (audio_output_is_open(&audioOutputArray[i]))
+ audio_output_cancel(&audioOutputArray[i]);
+ }
+
+ audio_output_wait_all();
+}
+
+void closeAudioDevice(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < audioOutputArraySize; ++i)
+ audio_output_close(&audioOutputArray[i]);
+}
+
+void sendMetadataToAudioDevice(const struct tag *tag)
+{
+ unsigned int i;
+
+ for (i = 0; i < audioOutputArraySize; ++i)
+ if (audio_output_is_open(&audioOutputArray[i]))
+ audio_output_send_tag(&audioOutputArray[i], tag);
+
+ audio_output_wait_all();
+}