+++ /dev/null
-/*
- * This file is part of DisOrder.
- * Copyright (C) 2005, 2007, 2010 Richard Kettlewell
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
- */
-/** @file driver/disorder.c
- * @brief libao driver used by DisOrder
- *
- * The output from this driver is expected to be fed to @c
- * disorder-normalize to convert to the confnigured target format.
- *
- * @attention This driver will not build with libao 1.0.0. libao has
- * taken away half the plugin API and not provided any replacement.
- */
-
-#include "common.h"
-
-#include <errno.h>
-#include <unistd.h>
-#include <poll.h>
-#include <ao/ao.h>
-#include <ao/plugin.h>
-
-#include "speaker-protocol.h"
-
-/* extra declarations to help out lazy <ao/plugin.h> */
-int ao_plugin_test(void);
-ao_info *ao_plugin_driver_info(void);
-char *ao_plugin_file_extension(void);
-
-/** @brief Private data structure for this driver */
-struct internal {
- int fd; /* output file descriptor */
- int exit_on_error; /* exit on write error */
-
- /** @brief Record of sample format */
- struct stream_header header;
-
-};
-
-/* like write() but never returns EINTR/EAGAIN or short */
-static int do_write(int fd, const void *ptr, size_t n) {
- size_t written = 0;
- int ret;
- struct pollfd ufd;
-
- memset(&ufd, 0, sizeof ufd);
- ufd.fd = fd;
- ufd.events = POLLOUT;
- while(written < n) {
- ret = write(fd, (const char *)ptr + written, n - written);
- if(ret < 0) {
- switch(errno) {
- case EINTR: break;
- case EAGAIN:
- /* Someone sneakily gave us a nonblocking file descriptor, wait until
- * we can write again */
- ret = poll(&ufd, 1, -1);
- if(ret < 0 && errno != EINTR) return -1;
- break;
- default:
- return -1;
- }
- } else
- written += ret;
- }
- return written;
-}
-
-/* return 1 if this driver can be opened */
-int ao_plugin_test(void) {
- return 1;
-}
-
-/* return info about this driver */
-ao_info *ao_plugin_driver_info(void) {
- static const char *options[] = { "fd" };
- static const ao_info info = {
- AO_TYPE_LIVE, /* type */
- (char *)"DisOrder format driver", /* name */
- (char *)"disorder", /* short_name */
- (char *)"http://www.greenend.org.uk/rjk/disorder/", /* comment */
- (char *)"Richard Kettlewell", /* author */
- AO_FMT_NATIVE, /* preferred_byte_format */
- 0, /* priority */
- (char **)options, /* options */
- 1, /* option_count */
- };
- return (ao_info *)&info;
-}
-
-/* initialize the private data structure */
-int ao_plugin_device_init(ao_device *device) {
- struct internal *i = malloc(sizeof (struct internal));
- const char *e;
-
- if(!i) return 0;
- memset(i, 0, sizeof *i);
- if((e = getenv("DISORDER_RAW_FD")))
- i->fd = atoi(e);
- else
- i->fd = 1;
- device->internal = i;
- return 1;
-}
-
-/* set an option */
-int ao_plugin_set_option(ao_device *device,
- const char *key,
- const char *value) {
- struct internal *i = device->internal;
-
- if(!strcmp(key, "fd"))
- i->fd = atoi(value);
- else if(!strcmp(key, "fragile"))
- i->exit_on_error = atoi(value);
- /* unknown options are required to be ignored */
- return 1;
-}
-
-/* open the device */
-int ao_plugin_open(ao_device *device, ao_sample_format *format) {
- struct internal *i = device->internal;
-
- /* we would like native-order samples */
- device->driver_byte_format = AO_FMT_NATIVE;
- i->header.rate = format->rate;
- i->header.channels = format->channels;
- i->header.bits = format->bits;
- i->header.endian = ENDIAN_NATIVE;
- return 1;
-}
-
-/* play some samples */
-int ao_plugin_play(ao_device *device, const char *output_samples,
- uint_32 num_bytes) {
- struct internal *i = device->internal;
-
- /* Fill in and write the header */
- i->header.nbytes = num_bytes;
- if(do_write(i->fd, &i->header, sizeof i->header) < 0) {
- if(i->exit_on_error) _exit(-1);
- return 0;
- }
-
- /* Write the sample data */
- if(do_write(i->fd, output_samples, num_bytes) < 0) {
- if(i->exit_on_error) _exit(-1);
- return 0;
- }
- return 1;
-}
-
-/* close the device */
-int ao_plugin_close(ao_device attribute((unused)) *device) {
- return 1;
-}
-
-/* delete private data structures */
-void ao_plugin_device_clear(ao_device *device) {
- free(device->internal);
- device->internal = 0;
-}
-
-/* report preferred filename extension */
-char *ao_plugin_file_extension(void) {
- return 0;
-}
-
-/*
-Local Variables:
-c-basic-offset:2
-comment-column:40
-End:
-*/
~mdw / disorder / blobdiff