/*
- * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2013 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include <regex.h>
#include <sys/types.h>
-#include <dirent.h>
-#include <stdbool.h>
#include "para.h"
#include "string.h"
#include "fd.h"
#include "error.h"
#include "version.h"
+#include "check_wav.h"
INIT_WRITE_ERRLISTS;
-enum check_wav_state {
- CWS_NEED_HEADER,
- CWS_HAVE_HEADER,
- CWS_NO_HEADER,
-};
-
-/* Information extracted from the wav header. */
-struct check_wav_task {
- int state;
- /** Number of channels. */
- unsigned channels;
- unsigned sample_format;
- /** Sample rate specified in wav header given by \a buf. */
- unsigned sample_rate;
- /** The task structure used by the scheduler. */
- struct task task;
- struct btr_node *btrn;
- size_t min_iqs;
-};
-
static struct write_args_info conf;
static struct stdin_task sit;
-/** Length of a standard wav header. */
-#define WAV_HEADER_LEN 44
+static int loglevel;
+INIT_STDERR_LOGGING(loglevel)
-static void check_wav_pre_select(struct sched *s, struct task *t)
+__noreturn static void print_help_and_die(void)
{
- struct check_wav_task *cwt = container_of(t, struct check_wav_task, task);
- int ret;
+ struct ggo_help h = DEFINE_GGO_HELP(write);
+ bool d = conf.detailed_help_given;
- ret = btr_node_status(cwt->btrn, cwt->min_iqs, BTR_NT_INTERNAL);
- if (ret != 0)
- sched_min_delay(s);
+ ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
+ print_writer_helps(d? GPH_MODULE_FLAGS_DETAILED : GPH_MODULE_FLAGS);
+ exit(0);
}
-#define HANDLE_EXEC(_cmd) \
- if (!strcmp(cmd, #_cmd)) { \
- if (!conf._cmd ## _given && cwt->state == CWS_NEED_HEADER) \
- return -E_BTR_NAVAIL; \
- *result = make_message("%d", cwt->state == CWS_NO_HEADER || conf._cmd ## _given? \
- conf._cmd ## _arg : cwt->_cmd); \
- return 1; \
- } \
-
-
-static int check_wav_exec(struct btr_node *btrn, const char *cmd, char **result)
+/*
+ * Parse config and register a task for a writer node.
+ *
+ * \param arg Command line arguments.
+ * \param parent The new node will be a child of \a parent.
+ * \param wn The writer node.
+ *
+ * If arg is \p NULL, the OS-dependent default writer is used with no
+ * arguments. The default writers are alsa for Linux, osx for OS X, oss for
+ * *BSD, and the file writer if the default writer is not supported.
+ *
+ * Once the writer configuration has been retrieved from the ->parse_config
+ * callback a writer node is created, its buffer tree node is added to the
+ * buffer tree as a child of the given parent.
+ *
+ * Finally, the new writer node's task structure is initialized and registered
+ * to the paraslash scheduler.
+ *
+ * \return Standard.
+ */
+static void setup_writer_node(const char *arg, struct btr_node *parent,
+ struct writer_node *wn, struct sched *s)
{
- struct check_wav_task *cwt = btr_context(btrn);
-
- HANDLE_EXEC(sample_rate);
- HANDLE_EXEC(channels);
- HANDLE_EXEC(sample_format);
- return -ERRNO_TO_PARA_ERROR(ENOTSUP);
+ wn->conf = check_writer_arg_or_die(arg, &wn->writer_num);
+ register_writer_node(wn, parent, s);
}
-static void check_wav_post_select(__a_unused struct sched *s, struct task *t)
-{
- struct check_wav_task *cwt = container_of(t, struct check_wav_task, task);
- struct btr_node *btrn = cwt->btrn;
- unsigned char *a;
- size_t sz;
- int ret;
- uint16_t bps; /* bits per sample */
- const char *sample_formats[] = {SAMPLE_FORMATS};
+struct write_task {
+ struct task task;
+ struct check_wav_context *cwc;
+};
- t->error = 0;
- ret = btr_node_status(btrn, cwt->min_iqs, BTR_NT_INTERNAL);
- if (ret <= 0)
- goto out;
- if (cwt->state != CWS_NEED_HEADER)
- goto pushdown;
- btr_merge(btrn, cwt->min_iqs);
- sz = btr_next_buffer(btrn, (char **)&a);
- if (sz < cwt->min_iqs) /* file size less than WAV_HEADER_SIZE */
- goto pushdown;
- cwt->min_iqs = 0;
- /*
- * The default byte ordering assumed for WAVE data files is
- * little-endian. Files written using the big-endian byte ordering
- * scheme have the identifier RIFX instead of RIFF.
- */
- if (a[0] != 'R' || a[1] != 'I' || a[2] != 'F' ||
- (a[3] != 'F' && a[3] != 'X')) {
- PARA_NOTICE_LOG("wav header not found\n");
- cwt->state = CWS_NO_HEADER;
- sprintf(t->status, "check wav: no header");
- goto out;
- }
- PARA_INFO_LOG("found wav header\n");
- cwt->state = CWS_HAVE_HEADER;
- sprintf(t->status, "check wav: have header");
- cwt->channels = (unsigned) a[22];
- cwt->sample_rate = a[24] + (a[25] << 8) + (a[26] << 16) + (a[27] << 24);
- bps = a[34] + ((unsigned)a[35] << 8);
- if (bps != 8 && bps != 16) {
- PARA_WARNING_LOG("%u bps not supported, assuming 16\n", bps);
- bps = 16;
- }
- /*
- * 8-bit samples are stored as unsigned bytes, ranging from 0 to 255.
- * 16-bit samples are stored as 2's-complement signed integers, ranging
- * from -32768 to 32767.
- */
- if (bps == 8)
- cwt->sample_format = SF_U8;
- else
- cwt->sample_format = (a[3] == 'F')? SF_S16_LE : SF_S16_BE;
- PARA_NOTICE_LOG("%dHz, %s, %s\n", cwt->sample_rate,
- cwt->channels == 1? "mono" : "stereo",
- sample_formats[cwt->sample_format]);
- btr_consume(btrn, WAV_HEADER_LEN);
-pushdown:
- btr_pushdown(btrn);
-out:
- t->error = ret;
- if (ret < 0)
- btr_remove_node(btrn);
+static void write_pre_select(struct sched *s, struct task *t)
+{
+ struct write_task *wt = container_of(t, struct write_task, task);
+ check_wav_pre_select(s, wt->cwc);
}
-static int loglevel;
-INIT_STDERR_LOGGING(loglevel)
-
-__noreturn static void print_help_and_die(void)
+static int write_post_select(__a_unused struct sched *s, struct task *t)
{
- int d = conf.detailed_help_given;
- const char **p = d? write_args_info_detailed_help
- : write_args_info_help;
-
- printf_or_die("%s\n\n", WRITE_CMDLINE_PARSER_PACKAGE "-"
- WRITE_CMDLINE_PARSER_VERSION);
- printf_or_die("%s\n\n", write_args_info_usage);
- for (; *p; p++)
- printf_or_die("%s\n", *p);
- print_writer_helps(d);
- exit(0);
+ struct write_task *wt = container_of(t, struct write_task, task);
+ return check_wav_post_select(wt->cwc);
}
-static int main_btr(struct sched *s)
+static int setup_and_schedule(void)
{
int i, ret;
- struct check_wav_task _cwt, *cwt = &_cwt;
+ struct btr_node *cw_btrn;
struct writer_node *wns;
+ static struct sched s;
+ struct wav_params wp;
+ struct write_task wt = {
+ .task = {
+ .pre_select = write_pre_select,
+ .post_select = write_post_select,
+ .status = "write task",
+ },
+ };
- loglevel = get_loglevel_by_name(conf.loglevel_arg);
sit.btrn = btr_new_node(&(struct btr_node_description)
EMBRACE(.name = "stdin"));
stdin_set_defaults(&sit);
- register_task(&sit.task);
+ register_task(&s, &sit.task);
- cwt->state = CWS_NEED_HEADER;
- cwt->min_iqs = WAV_HEADER_LEN;
- cwt->btrn = btr_new_node(&(struct btr_node_description)
- EMBRACE(.name = "check_wav", .parent = sit.btrn,
- .handler = check_wav_exec, .context = cwt));
- sprintf(cwt->task.status, "check_wav");
- cwt->task.pre_select = check_wav_pre_select;
- cwt->task.post_select = check_wav_post_select;
- cwt->task.error = 0;
- register_task(&cwt->task);
-
- ret = -E_WRITE_SYNTAX;
+ COPY_WAV_PARMS(&wp, &conf);
+ wt.cwc = check_wav_init(sit.btrn, NULL, &wp, &cw_btrn);
+ register_task(&s, &wt.task);
if (!conf.writer_given) {
- i = 0;
wns = para_calloc(sizeof(*wns));
- ret = setup_writer_node(NULL, cwt->btrn, wns);
- if (ret < 0)
- goto out;
+ setup_writer_node(NULL, cw_btrn, wns, &s);
i = 1;
} else {
wns = para_calloc(conf.writer_given * sizeof(*wns));
- for (i = 0; i < conf.writer_given; i++) {
- ret = setup_writer_node(conf.writer_arg[i],
- cwt->btrn, wns + i);
- if (ret < 0)
- goto out;
- }
+ for (i = 0; i < conf.writer_given; i++)
+ setup_writer_node(conf.writer_arg[i], cw_btrn,
+ wns + i, &s);
}
- s->default_timeout.tv_sec = 10;
- s->default_timeout.tv_usec = 50000;
- ret = schedule(s);
+ s.default_timeout.tv_sec = 10;
+ s.default_timeout.tv_usec = 50000;
+ ret = schedule(&s);
if (ret >= 0) {
int j;
for (j = 0; j < i; j++) {
}
}
}
-out:
for (i--; i >= 0; i--) {
struct writer_node *wn = wns + i;
struct writer *w = writers + wn->writer_num;
w->close(wn);
- btr_free_node(wn->btrn);
+ btr_remove_node(&wn->btrn);
w->free_config(wn->conf);
free(wn->conf);
}
free(wns);
- btr_free_node(cwt->btrn);
+ check_wav_shutdown(wt.cwc);
return ret;
}
*/
int main(int argc, char *argv[])
{
- int ret = -E_WRITE_SYNTAX;
- static struct sched s;
+ int ret;
- writer_init();
write_cmdline_parser(argc, argv, &conf);
- HANDLE_VERSION_FLAG("write", conf);
+ loglevel = get_loglevel_by_name(conf.loglevel_arg);
+ writer_init();
+ version_handle_flag("write", conf.version_given);
if (conf.help_given || conf.detailed_help_given)
print_help_and_die();
- ret = main_btr(&s);
+ ret = setup_and_schedule();
if (ret < 0) {
PARA_ERROR_LOG("%s\n", para_strerror(-ret));
exit(EXIT_FAILURE);
projects / paraslash.git / blobdiff