Add btr support to the oggdec filter.

[paraslash.git] / write.c

diff --git a/write.c b/write.c
index 34cea48c6a81ab2d7d6743e28706181415362824..def31334e5f89c0efc46055b8b28171a6107f614 100644 (file)
--- a/write.c
+++ b/write.c
@@ -9,6 +9,7 @@
 #include <regex.h>
 #include <sys/types.h>
 #include <dirent.h>
 #include <regex.h>
 #include <sys/types.h>
 #include <dirent.h>

+#include <stdbool.h>

 
 #include "para.h"
 #include "string.h"
 
 #include "para.h"
 #include "string.h"


@@ -17,6 +18,7 @@
 #include "sched.h"
 #include "ggo.h"
 #include "stdin.h"
 #include "sched.h"
 #include "ggo.h"
 #include "stdin.h"

+#include "buffer_tree.h"

 #include "write.h"
 #include "write_common.h"
 #include "fd.h"
 #include "write.h"
 #include "write_common.h"
 #include "fd.h"


@@ -40,6 +42,23 @@ struct check_wav_task {
        struct task task;
 };
 
        struct task task;
 };
 

+enum check_wav_state {
+       CWS_NEED_HEADER,
+       CWS_HAVE_HEADER,
+       CWS_NO_HEADER,
+};
+
+struct check_wav_task_btr {
+       int state;
+       /** 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;
+       struct btr_node *btrn;
+};
+

 /** Delay writing until given time. */
 struct initial_delay_task {
        /** The time the first data should be written out. */
 /** Delay writing until given time. */
 struct initial_delay_task {
        /** The time the first data should be written out. */


@@ -101,6 +120,85 @@ out:
        s->timeout.tv_usec = 1;
 }
 
        s->timeout.tv_usec = 1;
 }
 

+static void check_wav_pre_select_btr(__a_unused struct sched *s, struct task *t)
+{
+       struct check_wav_task_btr *cwt = container_of(t, struct check_wav_task_btr, task);
+
+       if (btr_get_input_queue_size(cwt->btrn) < WAV_HEADER_LEN)
+               return;
+       s->timeout.tv_sec = 0;
+       s->timeout.tv_usec = 1;
+}
+
+static int check_wav_exec(struct btr_node *btrn, const char *cmd, char **result)
+{
+       struct check_wav_task_btr *cwt = btr_context(btrn);
+
+       if (!strcmp(cmd, "samplerate")) {
+               if (cwt->state != CWS_HAVE_HEADER)
+                       return -ERRNO_TO_PARA_ERROR(ENAVAIL);
+               *result = make_message("%d", cwt->samplerate);
+               return 1;
+       }
+       if (!strcmp(cmd, "channels")) {
+               if (cwt->state != CWS_HAVE_HEADER)
+                       return -ERRNO_TO_PARA_ERROR(ENAVAIL);
+               *result = make_message("%d", cwt->samplerate);
+               return 1;
+       }
+       return -ERRNO_TO_PARA_ERROR(ENOTSUP);
+}
+
+static void check_wav_post_select_btr(__a_unused struct sched *s, struct task *t)
+{
+       struct check_wav_task_btr *cwt = container_of(t, struct check_wav_task_btr, task);
+       unsigned char *a;
+       size_t sz = btr_get_input_queue_size(cwt->btrn);
+
+       t->error = 0;
+       if (cwt->state != CWS_NEED_HEADER)
+               goto out;
+       if (sz < WAV_HEADER_LEN) {
+               if (!btr_no_parent(cwt->btrn))
+                       return;
+               if (sz != 0) {
+                       cwt->state = CWS_NO_HEADER;
+                       goto out;
+               }
+               t->error = -E_WRITE_EOF;
+               goto err;
+       }
+       cwt->channels = 2;
+       cwt->samplerate = 44100;
+       btr_next_buffer(cwt->btrn, (char **)&a);
+       if (a[0] != 'R' || a[1] != 'I' || a[2] != 'F' || a[3] != 'F') {
+               PARA_NOTICE_LOG("wav header not found\n");
+               cwt->state = CWS_NO_HEADER;
+               sprintf(t->status, "check wav: no header");
+               goto consume;
+       }
+       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->samplerate = a[24] + (a[25] << 8) + (a[26] << 16) + (a[27] << 24);
+consume:
+       PARA_INFO_LOG("channels: %d, sample rate: %d\n", cwt->channels, cwt->samplerate);
+       btr_consume(cwt->btrn, WAV_HEADER_LEN);
+out:
+       if (sz) {
+               btr_pushdown(cwt->btrn);
+               s->timeout.tv_sec = 0;
+               s->timeout.tv_usec = 1;
+       } else {
+               if (btr_no_parent(cwt->btrn))
+                       t->error = -E_WRITE_EOF;
+       }
+err:
+       if (t->error < 0)
+               btr_del_node(cwt->btrn);
+}
+

 static void initial_delay_pre_select(struct sched *s, struct task *t)
 {
        struct initial_delay_task *idt = container_of(t, struct initial_delay_task, task);
 static void initial_delay_pre_select(struct sched *s, struct task *t)
 {
        struct initial_delay_task *idt = container_of(t, struct initial_delay_task, task);


@@ -179,6 +277,64 @@ __noreturn static void print_help_and_die(void)
        exit(0);
 }
 
        exit(0);
 }
 

+/*
+ TODO: check wav, initial delay, multiple writers, non-default writers
+ */
+static int main_btr(struct sched *s)
+{
+       int i, ret;
+       struct check_wav_task_btr _cwt, *cwt = &_cwt;
+       struct writer_node **wns;
+
+       sit.btrn = btr_new_node("stdin", NULL /* stdin has no parent */, NULL, NULL);
+       stdin_set_defaults(&sit);
+       register_task(&sit.task);
+
+       cwt->state = CWS_NEED_HEADER;
+       cwt->btrn = btr_new_node("check wav", sit.btrn, check_wav_exec, cwt);
+       sprintf(cwt->task.status, "check wav");
+       cwt->task.pre_select = check_wav_pre_select_btr;
+       cwt->task.post_select = check_wav_post_select_btr;
+       cwt->task.error = 0;
+       register_task(&cwt->task);
+
+       wns = para_malloc(conf.writer_given * sizeof(*wns));
+
+       for (i = 0; i < conf.writer_given; i++) {
+               struct writer_node *wn = para_calloc(sizeof(*wn));
+               struct writer *w;
+               const char *name;
+
+               ret = -E_WRITE_SYNTAX;
+               wn->conf = check_writer_arg(conf.writer_arg[i],
+                       &wn->writer_num);
+               if (!wn->conf)
+                       goto out;
+               w = writers + wn->writer_num;
+               name = writer_names[wn->writer_num];
+               wn->btrn = btr_new_node(name, cwt->btrn, w->execute, wn);
+               sprintf(wn->task.status, "%s", name);
+               w->open(wn);
+               wn->task.post_select = w->post_select_btr;
+               wn->task.pre_select = w->pre_select_btr;
+               register_task(&wn->task);
+               wns[i] = wn;
+       }
+       i--;
+
+       s->default_timeout.tv_sec = 10;
+       s->default_timeout.tv_usec = 50000;
+       ret = schedule(s);
+out:
+       for (; i >= 0; i--) {
+               struct writer_node *wn = wns[i];
+               free(wn->conf);
+               free(wn);
+       }
+       free(wns);
+       return ret;
+}
+

 /**
  * Para_write's main function.
  *
 /**
  * Para_write's main function.
  *


@@ -203,6 +359,10 @@ int main(int argc, char *argv[])
        if (conf.help_given || conf.detailed_help_given)
                print_help_and_die();
 
        if (conf.help_given || conf.detailed_help_given)
                print_help_and_die();
 

+       if (conf.buffer_tree_given) {
+               ret = main_btr(&s);
+               goto out;
+       }

        wng = check_args();
        if (!wng)
                goto out;
        wng = check_args();
        if (!wng)
                goto out;