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authorMax Kellermann <max@duempel.org>2009-10-22 19:23:30 +0200
committerMax Kellermann <max@duempel.org>2009-10-22 19:23:30 +0200
commit80ac82c8fb517bd22c29436f4bc47648b7c5b5d4 (patch)
treed59a7915018cafee82064ba361591ff4d5450171 /src/output/fifo_plugin.c
parentfd182f6d1e6331e17b04c6b9b4c0421c61a1d511 (diff)
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output/fifo: renamed source to fifo_output_plugin.c
Diffstat (limited to 'src/output/fifo_plugin.c')
-rw-r--r--src/output/fifo_plugin.c301
1 files changed, 0 insertions, 301 deletions
diff --git a/src/output/fifo_plugin.c b/src/output/fifo_plugin.c
deleted file mode 100644
index 76bbe8cfa..000000000
--- a/src/output/fifo_plugin.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/*
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "../output_api.h"
-#include "../utils.h"
-#include "../timer.h"
-
-#include <glib.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "fifo"
-
-#define FIFO_BUFFER_SIZE 65536 /* pipe capacity on Linux >= 2.6.11 */
-
-struct fifo_data {
- char *path;
- int input;
- int output;
- bool created;
- Timer *timer;
-};
-
-/**
- * The quark used for GError.domain.
- */
-static inline GQuark
-fifo_output_quark(void)
-{
- return g_quark_from_static_string("fifo_output");
-}
-
-static struct fifo_data *fifo_data_new(void)
-{
- struct fifo_data *ret;
-
- ret = g_new(struct fifo_data, 1);
-
- ret->path = NULL;
- ret->input = -1;
- ret->output = -1;
- ret->created = false;
-
- return ret;
-}
-
-static void fifo_data_free(struct fifo_data *fd)
-{
- g_free(fd->path);
- g_free(fd);
-}
-
-static void fifo_delete(struct fifo_data *fd)
-{
- g_debug("Removing FIFO \"%s\"", fd->path);
-
- if (unlink(fd->path) < 0) {
- g_warning("Could not remove FIFO \"%s\": %s",
- fd->path, strerror(errno));
- return;
- }
-
- fd->created = false;
-}
-
-static void
-fifo_close(struct fifo_data *fd)
-{
- struct stat st;
-
- if (fd->input >= 0) {
- close(fd->input);
- fd->input = -1;
- }
-
- if (fd->output >= 0) {
- close(fd->output);
- fd->output = -1;
- }
-
- if (fd->created && (stat(fd->path, &st) == 0))
- fifo_delete(fd);
-}
-
-static bool
-fifo_make(struct fifo_data *fd, GError **error)
-{
- if (mkfifo(fd->path, 0666) < 0) {
- g_set_error(error, fifo_output_quark(), errno,
- "Couldn't create FIFO \"%s\": %s",
- fd->path, strerror(errno));
- return false;
- }
-
- fd->created = true;
-
- return true;
-}
-
-static bool
-fifo_check(struct fifo_data *fd, GError **error)
-{
- struct stat st;
-
- if (stat(fd->path, &st) < 0) {
- if (errno == ENOENT) {
- /* Path doesn't exist */
- return fifo_make(fd, error);
- }
-
- g_set_error(error, fifo_output_quark(), errno,
- "Failed to stat FIFO \"%s\": %s",
- fd->path, strerror(errno));
- return false;
- }
-
- if (!S_ISFIFO(st.st_mode)) {
- g_set_error(error, fifo_output_quark(), 0,
- "\"%s\" already exists, but is not a FIFO",
- fd->path);
- return false;
- }
-
- return true;
-}
-
-static bool
-fifo_open(struct fifo_data *fd, GError **error)
-{
- if (!fifo_check(fd, error))
- return false;
-
- fd->input = open(fd->path, O_RDONLY|O_NONBLOCK);
- if (fd->input < 0) {
- g_set_error(error, fifo_output_quark(), errno,
- "Could not open FIFO \"%s\" for reading: %s",
- fd->path, strerror(errno));
- fifo_close(fd);
- return false;
- }
-
- fd->output = open(fd->path, O_WRONLY|O_NONBLOCK);
- if (fd->output < 0) {
- g_set_error(error, fifo_output_quark(), errno,
- "Could not open FIFO \"%s\" for writing: %s",
- fd->path, strerror(errno));
- fifo_close(fd);
- return false;
- }
-
- return true;
-}
-
-static void *
-fifo_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
- const struct config_param *param,
- GError **error)
-{
- struct fifo_data *fd;
- char *value, *path;
-
- value = config_dup_block_string(param, "path", NULL);
- if (value == NULL) {
- g_set_error(error, fifo_output_quark(), errno,
- "No \"path\" parameter specified");
- return NULL;
- }
-
- path = parsePath(value);
- g_free(value);
- if (!path) {
- g_set_error(error, fifo_output_quark(), errno,
- "Could not parse \"path\" parameter");
- return NULL;
- }
-
- fd = fifo_data_new();
- fd->path = path;
-
- if (!fifo_open(fd, error)) {
- fifo_data_free(fd);
- return NULL;
- }
-
- return fd;
-}
-
-static void
-fifo_output_finish(void *data)
-{
- struct fifo_data *fd = (struct fifo_data *)data;
-
- fifo_close(fd);
- fifo_data_free(fd);
-}
-
-static bool
-fifo_output_open(void *data, struct audio_format *audio_format,
- G_GNUC_UNUSED GError **error)
-{
- struct fifo_data *fd = (struct fifo_data *)data;
-
- fd->timer = timer_new(audio_format);
-
- return true;
-}
-
-static void
-fifo_output_close(void *data)
-{
- struct fifo_data *fd = (struct fifo_data *)data;
-
- timer_free(fd->timer);
-}
-
-static void
-fifo_output_cancel(void *data)
-{
- struct fifo_data *fd = (struct fifo_data *)data;
- char buf[FIFO_BUFFER_SIZE];
- int bytes = 1;
-
- timer_reset(fd->timer);
-
- while (bytes > 0 && errno != EINTR)
- bytes = read(fd->input, buf, FIFO_BUFFER_SIZE);
-
- if (bytes < 0 && errno != EAGAIN) {
- g_warning("Flush of FIFO \"%s\" failed: %s",
- fd->path, strerror(errno));
- }
-}
-
-static size_t
-fifo_output_play(void *data, const void *chunk, size_t size,
- GError **error)
-{
- struct fifo_data *fd = (struct fifo_data *)data;
- ssize_t bytes;
-
- if (!fd->timer->started)
- timer_start(fd->timer);
- else
- timer_sync(fd->timer);
-
- timer_add(fd->timer, size);
-
- while (true) {
- bytes = write(fd->output, chunk, size);
- if (bytes > 0)
- return (size_t)bytes;
-
- if (bytes < 0) {
- switch (errno) {
- case EAGAIN:
- /* The pipe is full, so empty it */
- fifo_output_cancel(fd);
- continue;
- case EINTR:
- continue;
- }
-
- g_set_error(error, fifo_output_quark(), errno,
- "Failed to write to FIFO %s: %s",
- fd->path, g_strerror(errno));
- return 0;
- }
- }
-}
-
-const struct audio_output_plugin fifo_output_plugin = {
- .name = "fifo",
- .init = fifo_output_init,
- .finish = fifo_output_finish,
- .open = fifo_output_open,
- .close = fifo_output_close,
- .play = fifo_output_play,
- .cancel = fifo_output_cancel,
-};