-/*
- * Copyright (C) 2005-2014 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file oggdec_filter.c Paraslash's ogg vorbis decoder. */
#include "para.h"
#include "list.h"
#include "sched.h"
-#include "ggo.h"
#include "buffer_tree.h"
#include "filter.h"
#include "error.h"
static void ogg_open(struct filter_node *fn)
{
- fn->private_data = para_calloc(sizeof(struct private_oggdec_data));
+ fn->private_data = zalloc(sizeof(struct private_oggdec_data));
fn->min_iqs = 8000;
}
fn->private_data = NULL;
}
-static int oggdec_execute(struct btr_node *btrn, const char *cmd, char **result)
+static int oggdec_execute(const struct btr_node *btrn, const char *cmd,
+ char **result)
{
struct filter_node *fn = btr_context(btrn);
struct private_oggdec_data *pod = fn->private_data;
struct btr_node *btrn = fn->btrn;
int ret, oret;
size_t iqs;
- struct OggVorbis_File *vf = para_malloc(sizeof(*vf));
+ struct OggVorbis_File *vf = alloc(sizeof(*vf));
PARA_NOTICE_LOG("iqs: %zu, min_iqs: %zu, opening ov callbacks\n",
btr_get_input_queue_size(btrn), fn->min_iqs);
goto out;
pod->channels = ov_info(vf, 0)->channels;
pod->sample_rate = ov_info(vf, 0)->rate;
- PARA_NOTICE_LOG("%d channels, %d Hz\n", pod->channels,
+ PARA_NOTICE_LOG("%u channels, %u Hz\n", pod->channels,
pod->sample_rate);
ret = 1;
out:
return ret;
}
+/** Suspend decoding if output queue size is larger than that. */
#define OGGDEC_MAX_OUTPUT_SIZE (96 * 1024)
+
+/**
+ * Allocate chunks of this size and produce at most one chunk of output per
+ * ->post_monitor() invocation. If the buffer could only be filled partially
+ * due to insufficient input being available, it is shrunk to the real output
+ * size and the resized buffer is fed into the output queue.
+ */
#define OGGDEC_OUTPUT_CHUNK_SIZE (32 * 1024)
-static void ogg_pre_select(struct sched *s, void *context)
+static void ogg_pre_monitor(struct sched *s, void *context)
{
struct filter_node *fn = context;
struct private_oggdec_data *pod = fn->private_data;
sched_min_delay(s);
}
-static int ogg_post_select(__a_unused struct sched *s, void *context)
+static int ogg_post_monitor(__a_unused struct sched *s, void *context)
{
struct filter_node *fn = context;
struct private_oggdec_data *pod = fn->private_data;
ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
if (ret < 0) {
- if (ret != -E_BTR_EOF) /* fatal error */
+ if (ret != -E_EOF) /* fatal error */
goto out;
if (fn->min_iqs == 0 && !pod->have_more) /* EOF */
goto out;
goto out;
}
have = 0;
- buf = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE);
+ buf = alloc(OGGDEC_OUTPUT_CHUNK_SIZE);
for (;;) {
ret = ov_read(pod->vf, buf + have, OGGDEC_OUTPUT_CHUNK_SIZE - have,
ENDIAN, 2 /* 16 bit */, 1 /* signed */, NULL);
return ret;
}
-/**
- * The init function of the ogg vorbis decoder.
- *
- * \param f Its fields are filled in by the function.
- */
-void oggdec_filter_init(struct filter *f)
-{
- f->open = ogg_open;
- f->close = ogg_close;
- f->pre_select = ogg_pre_select;
- f->post_select = ogg_post_select;
- f->execute = oggdec_execute;
-}
+const struct filter lsg_filter_cmd_com_oggdec_user_data = {
+ .open = ogg_open,
+ .close = ogg_close,
+ .pre_monitor = ogg_pre_monitor,
+ .post_monitor = ogg_post_monitor,
+ .execute = oggdec_execute
+};