bf5ce629175e70dd35b34655e102416b6699c973
2 * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
19 /** \file write.c Paraslash's standalone wav/raw player */
23 #include "write.cmdline.h"
28 #include "write_common.h"
35 * check if given buffer contains a valid wave header
37 struct check_wav_task
{
38 /** the buffer to check */
40 /** number of bytes loaded in \a buf */
42 /** non-zero if end of file was reached */
44 /** number of channels specified in wav header given by \a buf */
46 /** samplerate specified in wav header given by \a buf */
48 /** the task structure for this task */
53 * delay writing until given time
55 struct initial_delay_task
{
56 /** the time the first data should be written out */
57 struct timeval start_time
;
58 /** the task structure for this task */
62 static struct write_args_info conf
;
63 struct stdin_task sit
;
64 struct check_wav_task cwt
;
65 struct initial_delay_task idt
;
66 static struct writer_node_group
*wng
;
68 /** length of a standard wav header */
69 #define WAV_HEADER_LEN 44
72 * test if audio buffer contains a valid wave header
74 * \return If not, return -E_NO_WAV_HEADER, otherwise, return zero. If
75 * there is less than WAV_HEADER_LEN bytes awailable, return one.
77 static void check_wav_pre_select(__a_unused
struct sched
*s
, struct task
*t
)
79 struct check_wav_task
*wt
= t
->private_data
;
82 if (*wt
->loaded
< WAV_HEADER_LEN
) {
83 t
->ret
= *wt
->eof
? -E_PREMATURE_END
: 1;
87 wt
->samplerate
= 44100;
88 a
= (unsigned char*)wt
->buf
;
89 t
->ret
= -E_NO_WAV_HEADER
;
90 if (a
[0] != 'R' || a
[1] != 'I' || a
[2] != 'F' || a
[3] != 'F')
92 wt
->channels
= (unsigned) a
[22];
93 wt
->samplerate
= a
[24] + (a
[25] << 8) + (a
[26] << 16) + (a
[27] << 24);
94 *wt
->loaded
-= WAV_HEADER_LEN
;
95 memmove(wt
->buf
, wt
->buf
+ WAV_HEADER_LEN
, *wt
->loaded
);
96 t
->ret
= -E_WAV_HEADER_SUCCESS
;
97 PARA_INFO_LOG("channels: %d, sample rate: %d\n", wt
->channels
, wt
->samplerate
);
100 static void initial_delay_pre_select(struct sched
*s
, struct task
*t
)
102 struct initial_delay_task
*dt
= t
->private_data
;
105 t
->ret
= -E_NO_DELAY
;
106 if (!dt
->start_time
.tv_sec
&& !dt
->start_time
.tv_usec
)
108 t
->ret
= -E_DELAY_TIMEOUT
;
109 if (tv_diff(now
, &dt
->start_time
, &diff
) > 0)
112 if (tv_diff(&s
->timeout
, &diff
, NULL
) > 0)
117 * all log messages are written to stderr
119 * \param ll: loglevel
120 * \param fmt: format string
122 void para_log(int ll
, const char* fmt
,...)
126 if (ll
< conf
.loglevel_arg
)
129 vfprintf(stderr
, fmt
, argp
);
133 static struct writer_node_group
*check_args(void)
135 int i
, ret
= -E_WRITE_SYNTAX
;
136 struct writer_node_group
*g
= NULL
;
138 if (conf
.list_writers_given
) {
141 char *tmp
= make_message("%s%s%s",
148 fprintf(stderr
, "%s\n", msg
);
152 if (conf
.start_time_given
) {
153 long unsigned sec
, usec
;
154 if (sscanf(conf
.start_time_arg
, "%lu:%lu",
157 idt
.start_time
.tv_sec
= sec
;
158 idt
.start_time
.tv_usec
= usec
;
160 if (!conf
.writer_given
) {
161 g
= setup_default_wng();
165 g
= wng_new(conf
.writer_given
);
166 ret
= -E_WRITE_SYNTAX
;
167 for (i
= 0; i
< conf
.writer_given
; i
++) {
169 g
->writer_nodes
[i
].conf
= check_writer_arg(
170 conf
.writer_arg
[i
], &writer_num
);
171 if (!g
->writer_nodes
[i
].conf
)
173 g
->writer_nodes
[i
].writer
= &writers
[writer_num
];
183 static void wng_event_handler(struct task
*t
)
185 struct writer_node_group
*g
= t
->private_data
;
187 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t
->ret
));
193 static void idt_event_handler(struct task
*t
)
197 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t
->ret
));
200 wng
->loaded
= &sit
.loaded
;
201 wng
->input_eof
= &sit
.eof
;
202 wng
->task
.event_handler
= wng_event_handler
;
203 wng
->channels
= &cwt
.channels
;
204 wng
->samplerate
= &cwt
.samplerate
;
207 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret
));
212 static void cwt_event_handler(struct task
*t
)
214 if (t
->ret
!= -E_NO_WAV_HEADER
&& t
->ret
!= -E_WAV_HEADER_SUCCESS
) {
215 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-t
->ret
));
218 PARA_INFO_LOG("%s\n", PARA_STRERROR(-t
->ret
));
220 // if (t->ret == -E_WAV_HEADER_SUCCESS) {
221 // conf.channels_arg = cwt.channels;
222 // conf.sample_rate_arg = cwt.sample_rate;
224 idt
.task
.pre_select
= initial_delay_pre_select
;
225 idt
.task
.private_data
= &idt
;
226 idt
.task
.event_handler
= idt_event_handler
;
227 sprintf(idt
.task
.status
, "initial_delay");
228 register_task(&idt
.task
);
232 * para_write's main function
234 * It registers the stdin task, the check_wav_task, the task for initial delay
235 * and all tasks for actually writing out the stream.
238 int main(int argc
, char *argv
[])
240 int ret
= -E_WRITE_SYNTAX
;
243 write_cmdline_parser(argc
, argv
, &conf
);
244 init_supported_writers();
249 stdin_set_defaults(&sit
);
250 if (conf
.bufsize_given
)
251 sit
.bufsize
= conf
.bufsize_arg
;
252 sit
.buf
= para_malloc(sit
.bufsize
),
253 register_task(&sit
.task
);
255 cwt
.task
.pre_select
= check_wav_pre_select
;
256 cwt
.task
.private_data
= &cwt
;
257 cwt
.task
.event_handler
= cwt_event_handler
;
259 cwt
.loaded
= &sit
.loaded
;
261 sprintf(cwt
.task
.status
, "check wav");
262 register_task(&cwt
.task
);
264 s
.default_timeout
.tv_sec
= 1;
265 s
.default_timeout
.tv_usec
= 0;
270 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret
));