From: Andre Noll <maan@systemlinux.org>
Date: Wed, 6 Jan 2010 23:35:55 +0000 (+0100)
Subject: oggdec: Move init into a separate function.
X-Git-Tag: v0.4.2~185
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=09cab8901a5ff30aa8a6823a75f2a6161779f025

oggdec: Move init into a separate function.
---

diff --git a/oggdec_filter.c b/oggdec_filter.c
index 4b6232b9..2c9d25f2 100644
--- a/oggdec_filter.c
+++ b/oggdec_filter.c
@@ -181,6 +181,61 @@ static int oggdec_execute(struct btr_node *btrn, const char *cmd, char **result)
 	return -ERRNO_TO_PARA_ERROR(ENOTSUP);
 }
 
+static int ogg_init(struct filter_node *fn)
+{
+	struct private_oggdec_data *pod = fn->private_data;
+	struct btr_node *btrn = fn->btrn;
+	int ret, oret;
+	size_t iqs;
+	struct timeval delay = {0, 500 * 1000};
+
+	pod->vf = para_malloc(sizeof(struct OggVorbis_File));
+	PARA_NOTICE_LOG("min_iqs: %zu, opening ov callbacks\n", fn->min_iqs);
+open:
+	oret = ov_open_callbacks(fn, pod->vf,
+		NULL, /* no initial buffer */
+		0, /* no initial bytes */
+		ovc); /* the ov_open_callbacks */
+	if (oret == OV_ENOTVORBIS || oret == OV_EBADHEADER) {
+		/* this might be due to the input buffer being too small */
+		if (!btr_no_parent(btrn)) {
+			fn->min_iqs += 1000;
+			iqs = btr_get_input_queue_size(btrn);
+			ret = 0;
+			if (iqs <= fn->min_iqs)
+				goto out;
+			btr_merge(btrn, fn->min_iqs);
+			goto open;
+		}
+		ret = (oret == OV_ENOTVORBIS)?
+			-E_OGGDEC_NOTVORBIS : -E_OGGDEC_BADHEADER;
+		goto out;
+	}
+	ret = -E_OGGDEC_READ;
+	if (oret == OV_EREAD)
+		goto out;
+	ret = -E_OGGDEC_VERSION;
+	if (oret == OV_EVERSION)
+		goto out;
+	ret = -E_OGGDEC_FAULT;
+	if (oret < 0)
+		goto out;
+	pod->channels = ov_info(pod->vf, 0)->channels;
+	pod->samplerate = ov_info(pod->vf, 0)->rate;
+	PARA_NOTICE_LOG("%d channels, %d Hz\n", pod->channels,
+		pod->samplerate);
+	/* wait a bit to avoid buffer underruns */
+	tv_add(now, &delay, &pod->stream_start);
+	ret = 1;
+out:
+	if (ret <= 0) {
+		free(pod->vf);
+		pod->vf = NULL;
+	} else
+		fn->min_iqs = 0;
+	return ret;
+}
+
 static void ogg_post_select(__a_unused struct sched *s, struct task *t)
 {
 	struct filter_node *fn = container_of(t, struct filter_node, task);
@@ -192,50 +247,15 @@ static void ogg_post_select(__a_unused struct sched *s, struct task *t)
 
 	t->error = 0;
 	ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
-	if (ret < 0)
-		goto err;
-	if (ret == 0)
-		return;
+	if (ret <= 0)
+		goto out;
 	btr_merge(btrn, fn->min_iqs);
 	len = btr_next_buffer(btrn, &in);
 	iqs = btr_get_input_queue_size(btrn);
 	if (!pod->vf) {
-		int oret;
-
-		pod->vf = para_malloc(sizeof(struct OggVorbis_File));
-		PARA_NOTICE_LOG("input queue: %zu, opening ov callbacks\n", iqs);
-		oret = ov_open_callbacks(fn, pod->vf,
-			NULL, /* no initial buffer */
-			0, /* no initial bytes */
-			ovc); /* the ov_open_callbacks */
-		if (oret == OV_ENOTVORBIS || oret == OV_EBADHEADER) {
-			/* this might be due to the input buffer being too small */
-			if (!btr_no_parent(btrn)) {
-				free(pod->vf);
-				pod->vf = NULL;
-				fn->min_iqs = iqs + 1;
-				return;
-			}
-			ret = (oret == OV_ENOTVORBIS)?
-				-E_OGGDEC_NOTVORBIS : -E_OGGDEC_BADHEADER;
-			goto err;
-		}
-		ret = -E_OGGDEC_READ;
-		if (oret == OV_EREAD)
-			goto err;
-		ret = -E_OGGDEC_VERSION;
-		if (oret == OV_EVERSION)
-			goto err;
-		ret = -E_OGGDEC_FAULT;
-		if (oret < 0)
-			goto err;
-		pod->channels = ov_info(pod->vf, 0)->channels;
-		pod->samplerate = ov_info(pod->vf, 0)->rate;
-		PARA_NOTICE_LOG("%d channels, %d Hz\n", pod->channels,
-			pod->samplerate);
-		///* wait a bit to avoid buffer underruns */
-		//tv_add(now, &(struct timeval){0, 500 * 1000}, &pod->stream_start);
-		return;
+		ret = ogg_init(fn);
+		if (ret <= 0)
+			goto out;
 	}
 	for (;;) {
 		char *out = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE);
@@ -244,24 +264,27 @@ static void ogg_post_select(__a_unused struct sched *s, struct task *t)
 		if (read_ret <= 0)
 			free(out);
 		if (read_ret == 0) {
-			ret = -E_OGGDEC_EOF;
 			if (btr_no_parent(btrn))
-				goto err;
-			return;
+				ret = -E_OGGDEC_EOF;
+			else
+				ret = 0;
+			goto out;
 		}
+		ret = 0;
 		if (read_ret == OV_HOLE)
-			return;
-		if (read_ret < 0) {
-			ret = -E_OGGDEC_BADLINK;
-			goto err;
-		}
+			goto out;
+		ret = -E_OGGDEC_BADLINK;
+		if (read_ret < 0)
+			goto out;
 		btr_add_output(out, read_ret, btrn);
+		if (btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL) == 0)
+			return; /* enough data for the moment */
+	}
+out:
+	if (ret < 0) {
+		t->error = ret;
+		btr_remove_node(btrn);
 	}
-
-err:
-	assert(ret < 0);
-	t->error = ret;
-	btr_remove_node(btrn);
 }
 
 static ssize_t ogg_convert(char *inbuffer, size_t len, struct filter_node *fn)