2 * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file write.c Paraslash's standalone wav/raw player. */
10 #include <sys/types.h>
16 #include "write.cmdline.h"
22 #include "write_common.h"
25 #include "buffer_tree.h"
29 /** Check if given buffer contains a valid wave header. */
30 struct check_wav_task
{
31 /** The buffer to check. */
33 /** Number of bytes loaded in \a buf. */
35 /** Non-zero if an error occurred or end of file was reached. */
37 /** Number of channels specified in wav header given by \a buf. */
39 /** Sample rate specified in wav header given by \a buf. */
41 /** The task structure used by the scheduler. */
45 /** Delay writing until given time. */
46 struct initial_delay_task
{
47 /** The time the first data should be written out. */
48 struct timeval start_time
;
49 /** The task structure for this task. */
53 static struct write_args_info conf
;
55 static struct stdin_task sit
;
57 static struct check_wav_task the_check_wav_task
;
58 static struct initial_delay_task the_initial_delay_task
;
60 static struct writer_node_group
*wng
;
62 /** Length of a standard wav header. */
63 #define WAV_HEADER_LEN 44
66 * Test if audio buffer contains a valid wave header.
68 * \return If not, return -E_NO_WAV_HEADER, otherwise, return zero. If
69 * there is less than WAV_HEADER_LEN bytes available, return one.
71 static void check_wav_pre_select(__a_unused
struct sched
*s
, struct task
*t
)
73 struct check_wav_task
*cwt
= container_of(t
, struct check_wav_task
, task
);
77 if (*cwt
->loaded
< WAV_HEADER_LEN
) {
78 if (*cwt
->input_error
< 0)
79 t
->error
= *cwt
->input_error
;
83 cwt
->samplerate
= 44100;
84 a
= (unsigned char*)cwt
->buf
;
85 if (a
[0] != 'R' || a
[1] != 'I' || a
[2] != 'F' || a
[3] != 'F') {
86 PARA_NOTICE_LOG("wav header not found\n");
87 t
->error
= -E_NO_WAV_HEADER
;
90 cwt
->channels
= (unsigned) a
[22];
91 cwt
->samplerate
= a
[24] + (a
[25] << 8) + (a
[26] << 16) + (a
[27] << 24);
92 *cwt
->loaded
-= WAV_HEADER_LEN
;
93 memmove(cwt
->buf
, cwt
->buf
+ WAV_HEADER_LEN
, *cwt
->loaded
);
94 t
->error
= -E_WAV_HEADER_SUCCESS
;
95 PARA_INFO_LOG("channels: %d, sample rate: %d\n", cwt
->channels
, cwt
->samplerate
);
97 wng
->channels
= &cwt
->channels
;
98 wng
->samplerate
= &cwt
->samplerate
;
102 s
->timeout
.tv_sec
= 0;
103 s
->timeout
.tv_usec
= 1;
106 static void initial_delay_pre_select(struct sched
*s
, struct task
*t
)
108 struct initial_delay_task
*idt
= container_of(t
, struct initial_delay_task
, task
);
111 if (!idt
->start_time
.tv_sec
&& !idt
->start_time
.tv_usec
) {
112 t
->error
= -E_NO_DELAY
;
113 goto register_check_wav
;
115 if (tv_diff(now
, &idt
->start_time
, &diff
) > 0) {
116 t
->error
= -E_DELAY_TIMEOUT
;
117 goto register_check_wav
;
119 if (tv_diff(&s
->timeout
, &diff
, NULL
) > 0)
123 register_task(&the_check_wav_task
.task
);
124 s
->timeout
.tv_sec
= 0;
125 s
->timeout
.tv_usec
= 1;
129 INIT_STDERR_LOGGING(loglevel
)
131 static struct writer_node_group
*check_args(void)
133 int i
, ret
= -E_WRITE_SYNTAX
;
134 struct writer_node_group
*g
= NULL
;
135 struct initial_delay_task
*idt
= &the_initial_delay_task
;
137 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
138 if (conf
.start_time_given
) {
139 long unsigned sec
, usec
;
140 if (sscanf(conf
.start_time_arg
, "%lu:%lu",
143 idt
->start_time
.tv_sec
= sec
;
144 idt
->start_time
.tv_usec
= usec
;
146 if (!conf
.writer_given
) {
147 g
= setup_default_wng();
151 g
= wng_new(conf
.writer_given
);
152 ret
= -E_WRITE_SYNTAX
;
153 for (i
= 0; i
< conf
.writer_given
; i
++) {
155 g
->writer_nodes
[i
].conf
= check_writer_arg(
156 conf
.writer_arg
[i
], &writer_num
);
157 if (!g
->writer_nodes
[i
].conf
)
159 g
->writer_nodes
[i
].writer_num
= writer_num
;
169 __noreturn
static void print_help_and_die(void)
171 int d
= conf
.detailed_help_given
;
172 const char **p
= d
? write_args_info_detailed_help
173 : write_args_info_help
;
175 printf_or_die("%s\n\n", WRITE_CMDLINE_PARSER_PACKAGE
"-"
176 WRITE_CMDLINE_PARSER_VERSION
);
177 printf_or_die("%s\n\n", write_args_info_usage
);
179 printf_or_die("%s\n", *p
);
180 print_writer_helps(d
);
185 TODO: check wav, initial delay, multiple writers, non-default writers
187 static int main_btr(struct sched
*s
)
189 struct writer_node
*wn
= para_malloc(sizeof(*wn
));
190 struct writer
*w
= writers
+ DEFAULT_WRITER
;
193 sit
.btrn
= btr_new_node("stdin", NULL
/* stdin has no parent */, NULL
);
194 stdin_set_defaults(&sit
);
195 register_task(&sit
.task
);
197 wn
->writer_num
= DEFAULT_WRITER
;
198 wn
->conf
= writers
[DEFAULT_WRITER
].parse_config("-B");
199 wn
->btrn
= btr_new_node("writer", sit
.btrn
, NULL
);
200 sprintf(wn
->task
.status
, "some writer");
202 wn
->task
.post_select
= w
->post_select_btr
;
203 wn
->task
.pre_select
= w
->pre_select_btr
;
204 register_task(&wn
->task
);
208 s
->default_timeout
.tv_sec
= 10;
209 s
->default_timeout
.tv_usec
= 50000;
216 * Para_write's main function.
218 * \param argc The usual argument counter.
219 * \param argv The usual argument vector.
221 * It registers the stdin task, the check_wav_task, the task for initial delay
222 * and all tasks for actually writing out the stream.
224 * \return \p EXIT_SUCCESS or EXIT_FAILURE
226 int main(int argc
, char *argv
[])
228 int ret
= -E_WRITE_SYNTAX
;
229 static struct sched s
;
230 struct check_wav_task
*cwt
= &the_check_wav_task
;
231 struct initial_delay_task
*idt
= &the_initial_delay_task
;
234 write_cmdline_parser(argc
, argv
, &conf
);
235 HANDLE_VERSION_FLAG("write", conf
);
236 if (conf
.help_given
|| conf
.detailed_help_given
)
237 print_help_and_die();
239 if (conf
.buffer_tree_given
) {
246 stdin_set_defaults(&sit
);
247 ret
= -ERRNO_TO_PARA_ERROR(EINVAL
);
248 if (conf
.bufsize_arg
< 0)
250 if (conf
.bufsize_arg
>= INT_MAX
/ 1024)
252 sit
.bufsize
= conf
.bufsize_arg
* 1024;
253 sit
.buf
= para_malloc(sit
.bufsize
);
255 wng
->bufp
= &sit
.buf
;
256 wng
->loaded
= &sit
.loaded
;
257 wng
->input_error
= &sit
.task
.error
;
259 register_task(&sit
.task
);
262 cwt
->loaded
= &sit
.loaded
;
263 cwt
->input_error
= &sit
.task
.error
;
264 sprintf(cwt
->task
.status
, "check wav");
265 cwt
->task
.pre_select
= check_wav_pre_select
;
267 idt
->task
.pre_select
= initial_delay_pre_select
;
268 sprintf(idt
->task
.status
, "initial_delay");
269 register_task(&idt
->task
);
271 s
.default_timeout
.tv_sec
= 10;
272 s
.default_timeout
.tv_usec
= 0;
277 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));