/*
- * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2008 Andre Noll <maan@systemlinux.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, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
+/** \file write.c Paraslash's standalone wav/raw player. */
+
+#include <sys/types.h>
+#include <dirent.h>
+
#include "para.h"
#include "string.h"
#include "write.cmdline.h"
+#include "list.h"
+#include "sched.h"
+#include "stdin.h"
#include "write.h"
#include "write_common.h"
#include "fd.h"
-
-#include <sys/time.h> /* gettimeofday */
-
#include "error.h"
-#define WAV_HEADER_LEN 44
-
-static unsigned char *audiobuf;
-static struct timeval *start_time;
-struct gengetopt_args_info conf;
-
INIT_WRITE_ERRLISTS;
-void para_log(int ll, const char* fmt,...)
-{
- va_list argp;
-
- if (ll < conf.loglevel_arg)
- return;
- va_start(argp, fmt);
- vfprintf(stderr, fmt, argp);
- va_end(argp);
-}
+/** Check if given buffer contains a valid wave header. */
+struct check_wav_task {
+ /** The buffer to check. */
+ char *buf;
+ /** Number of bytes loaded in \a buf. */
+ size_t *loaded;
+ /** Non-zero if an error occurred or end of file was reached. */
+ int *input_error;
+ /** Number of channels specified in wav header given by \a buf. */
+ unsigned channels;
+ /** Sample rate specified in wav header given by \a buf. */
+ unsigned samplerate;
+ /** The task structure used by the scheduler. */
+ struct task task;
+};
+
+/** Delay writing until given time. */
+struct initial_delay_task {
+ /** The time the first data should be written out. */
+ struct timeval start_time;
+ /** The task structure for this task. */
+ struct task task;
+};
+
+static struct write_args_info conf;
+
+static struct stdin_task sit;
+
+static struct check_wav_task the_check_wav_task;
+static struct initial_delay_task the_initial_delay_task;
+
+static struct writer_node_group *wng;
+
+/** Length of a standard wav header. */
+#define WAV_HEADER_LEN 44
/**
- * read WAV_HEADER_LEN bytes from stdin to audio buffer
+ * Test if audio buffer contains a valid wave header.
*
- * \return -E_READ_HDR on errors and on eof before WAV_HEADER_LEN could be
- * read. A positive return value indicates success.
+ * \return If not, return -E_NO_WAV_HEADER, otherwise, return zero. If
+ * there is less than WAV_HEADER_LEN bytes available, return one.
*/
-static int read_wav_header(void)
+static void check_wav_pre_select(__a_unused struct sched *s, struct task *t)
{
- ssize_t ret, count = 0;
+ struct check_wav_task *cwt = container_of(t, struct check_wav_task, task);
+ unsigned char *a;
+ int ret;
- while (count < WAV_HEADER_LEN) {
- ret = read(STDIN_FILENO, audiobuf + count, WAV_HEADER_LEN - count);
- if (ret <= 0)
- return -E_READ_HDR;
- count += ret;
+ if (*cwt->loaded < WAV_HEADER_LEN) {
+ if (*cwt->input_error < 0)
+ t->error = *cwt->input_error;
+ return;
}
- return 1;
-}
-
-/**
- * check if current time is later than start_time
- * \param diff pointer to write remaining time to
- *
- * If start_time was not given, or current time is later than given
- * start_time, return 0. Otherwise, return 1 and write the time
- * difference between current time and start_time to diff. diff may be
- * NULL.
- *
- */
-static int start_time_in_future(struct timeval *diff)
-{
- struct timeval now;
-
- if (!conf.start_time_given)
- return 0;
- gettimeofday(&now, NULL);
- return tv_diff(start_time, &now, diff) > 0? 1 : 0;
-}
-
-/**
- * sleep until time given at command line
- *
- * This is called if the initial buffer is filled. It returns
- * immediately if no start_time was given at the command line
- * or if the given start time is in the past.
- *
- */
-static void do_initial_delay(struct timeval *delay)
-{
- do
- para_select(1, NULL, NULL, delay);
- while (start_time_in_future(delay));
+ cwt->channels = 2;
+ cwt->samplerate = 44100;
+ a = (unsigned char*)cwt->buf;
+ if (a[0] != 'R' || a[1] != 'I' || a[2] != 'F' || a[3] != 'F') {
+ PARA_NOTICE_LOG("wav header not found\n");
+ t->error = -E_NO_WAV_HEADER;
+ goto out;
+ }
+ cwt->channels = (unsigned) a[22];
+ cwt->samplerate = a[24] + (a[25] << 8) + (a[26] << 16) + (a[27] << 24);
+ *cwt->loaded -= WAV_HEADER_LEN;
+ memmove(cwt->buf, cwt->buf + WAV_HEADER_LEN, *cwt->loaded);
+ t->error = -E_WAV_HEADER_SUCCESS;
+ PARA_INFO_LOG("channels: %d, sample rate: %d\n", cwt->channels, cwt->samplerate);
+out:
+ wng->channels = &cwt->channels;
+ wng->samplerate = &cwt->samplerate;
+ ret = wng_open(wng);
+ if (ret < 0)
+ t->error = ret;
+ s->timeout.tv_sec = 0;
+ s->timeout.tv_usec = 1;
}
-static int read_stdin(char *buf, size_t bytes_to_load, size_t *loaded)
+static void initial_delay_pre_select(struct sched *s, struct task *t)
{
- ssize_t ret;
+ struct initial_delay_task *idt = container_of(t, struct initial_delay_task, task);
+ struct timeval diff;
- while (*loaded < bytes_to_load) {
- ret = read(STDIN_FILENO, buf + *loaded, bytes_to_load - *loaded);
- if (ret <= 0) {
- if (ret < 0)
- ret = -E_READ_STDIN;
- return ret;
- }
- *loaded += ret;
+ if (!idt->start_time.tv_sec && !idt->start_time.tv_usec) {
+ t->error = -E_NO_DELAY;
+ goto register_check_wav;
}
- return 1;
-}
-/**
- * play raw pcm data
- * \param loaded number of bytes already loaded
- *
- * If start_time was given, prebuffer data until buffer is full or
- * start_time is reached. In any case, do not start playing before
- * start_time.
- *
- * \return positive on success, negative on errors.
- */
-static int pcm_write(struct writer_node_group *wng, size_t loaded)
-{
- size_t bufsize, prebuf_size, bytes_to_load;
- struct timeval delay;
- int ret, not_yet_started = 1;
-
- ret = wng_open(wng);
- if (ret < 0)
- goto out;
- PARA_INFO_LOG("max chunk_bytes: %d\n", wng->max_chunk_bytes);
- bufsize = (conf.bufsize_arg * 1024 / wng->max_chunk_bytes)
- * wng->max_chunk_bytes;
- audiobuf = para_realloc(audiobuf, bufsize);
- prebuf_size = conf.prebuffer_arg * bufsize / 100;
- bytes_to_load = PARA_MAX(prebuf_size, wng->max_chunk_bytes);
- ret = read_stdin(audiobuf, bytes_to_load, &loaded);
- if (ret <= 0 || loaded < bytes_to_load) {
- if (ret >= 0)
- ret = -E_PREMATURE_END;
- goto out;
+ if (tv_diff(now, &idt->start_time, &diff) > 0) {
+ t->error = -E_DELAY_TIMEOUT;
+ goto register_check_wav;
}
- if (not_yet_started && start_time && start_time_in_future(&delay))
- do_initial_delay(&delay);
- not_yet_started = 0;
-again:
- ret = wng_write(wng, audiobuf, &loaded);
- if (ret <= 0)
- goto out;
- ret = -E_WRITE_OVERRUN;
- if (loaded >= bufsize)
- goto out;
- bytes_to_load = PARA_MIN(wng->max_chunk_bytes, bufsize);
- ret = read_stdin(audiobuf, bytes_to_load, &loaded);
- if (ret < 0)
- goto out;
- if (!ret)
- wng->eof = 1;
- goto again;
-out:
- wng_close(wng);
- return ret;
+ if (tv_diff(&s->timeout , &diff, NULL) > 0)
+ s->timeout = diff;
+ return;
+register_check_wav:
+ register_task(&the_check_wav_task.task);
+ s->timeout.tv_sec = 0;
+ s->timeout.tv_usec = 1;
}
-struct writer_node_group *check_args(void)
+INIT_STDERR_LOGGING(conf.loglevel_arg)
+
+static struct writer_node_group *check_args(void)
{
int i, ret = -E_WRITE_SYNTAX;
- static struct timeval tv;
- struct writer_node_group *wng = NULL;
+ struct writer_node_group *g = NULL;
+ struct initial_delay_task *idt = &the_initial_delay_task;
if (conf.list_writers_given) {
char *msg = NULL;
free(msg);
exit(EXIT_SUCCESS);
}
- if (conf.prebuffer_arg < 0 || conf.prebuffer_arg > 100)
- goto out;
if (conf.start_time_given) {
long unsigned sec, usec;
if (sscanf(conf.start_time_arg, "%lu:%lu",
&sec, &usec) != 2)
goto out;
- tv.tv_sec = sec;
- tv.tv_usec = usec;
- start_time = &tv;
+ idt->start_time.tv_sec = sec;
+ idt->start_time.tv_usec = usec;
}
if (!conf.writer_given) {
- wng = setup_default_wng();
+ g = setup_default_wng();
ret = 1;
goto out;
}
- wng = wng_new(conf.writer_given);
+ g = wng_new(conf.writer_given);
+ ret = -E_WRITE_SYNTAX;
for (i = 0; i < conf.writer_given; i++) {
- ret = check_writer_arg(conf.writer_arg[i]);
- if (ret < 0)
+ int writer_num;
+ g->writer_nodes[i].conf = check_writer_arg(
+ conf.writer_arg[i], &writer_num);
+ if (!g->writer_nodes[i].conf)
goto out;
- wng->writer_nodes[i].writer = &writers[ret];
+ g->writer_nodes[i].writer = &writers[writer_num];
}
ret = 1;
out:
if (ret > 0)
- return wng;
- free(wng);
+ return g;
+ free(g);
return NULL;
}
/**
- * test if audio buffer contains a valid wave header
+ * Para_write's main function.
*
- * \return If not, return 0, otherwise, store number of channels and sample rate
- * in struct conf and return WAV_HEADER_LEN.
+ * \param argc The usual argument counter.
+ * \param argv The usual argument vector.
+ *
+ * It registers the stdin task, the check_wav_task, the task for initial delay
+ * and all tasks for actually writing out the stream.
+ *
+ * \return \p EXIT_SUCCESS or EXIT_FAILURE
*/
-static size_t check_wave(void)
-{
- unsigned char *a = audiobuf;
- if (a[0] != 'R' || a[1] != 'I' || a[2] != 'F' || a[3] != 'F')
- return WAV_HEADER_LEN;
- conf.channels_arg = (unsigned) a[22];
- conf.sample_rate_arg = a[24] + (a[25] << 8) + (a[26] << 16) + (a[27] << 24);
- return 0;
-}
-
int main(int argc, char *argv[])
{
int ret = -E_WRITE_SYNTAX;
- struct writer_node_group *wng = NULL;
+ static struct sched s;
+ struct check_wav_task *cwt = &the_check_wav_task;
+ struct initial_delay_task *idt = &the_initial_delay_task;
+
+ write_cmdline_parser(argc, argv, &conf);
+ HANDLE_VERSION_FLAG("write", conf);
+ init_supported_writers();
- cmdline_parser(argc, argv, &conf);
wng = check_args();
if (!wng)
goto out;
- init_supported_writers();
- audiobuf = para_malloc(WAV_HEADER_LEN);
- ret = read_wav_header();
- if (ret < 0)
+ stdin_set_defaults(&sit);
+ ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+ if (conf.bufsize_arg < 0)
goto out;
- ret = pcm_write(wng, check_wave());
+ if (conf.bufsize_arg >= INT_MAX / 1024)
+ goto out;
+ sit.bufsize = conf.bufsize_arg * 1024;
+ sit.buf = para_malloc(sit.bufsize);
+
+ wng->buf = sit.buf;
+ wng->loaded = &sit.loaded;
+ wng->input_error = &sit.task.error;
+
+ register_task(&sit.task);
+
+ cwt->buf = sit.buf;
+ cwt->loaded = &sit.loaded;
+ cwt->input_error = &sit.task.error;
+ sprintf(cwt->task.status, "check wav");
+ cwt->task.pre_select = check_wav_pre_select;
+
+ idt->task.pre_select = initial_delay_pre_select;
+ sprintf(idt->task.status, "initial_delay");
+ register_task(&idt->task);
+
+ s.default_timeout.tv_sec = 10;
+ s.default_timeout.tv_usec = 0;
+ ret = schedule(&s);
+ wng_close(wng);
out:
- wng_destroy(wng);
- free(audiobuf);
- if (ret < 0)
- PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
- return ret;
+ if (ret < 0) {
+ PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ exit(EXIT_FAILURE);
+ }
+ exit(EXIT_SUCCESS);
}
projects / paraslash.git / blobdiff