X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=oggdec_filter.c;h=1bc6d2f748e8cbe7c3067e3479e91ef771fb7667;hp=6a97d6c6191420a99af25327d517fcf6bc58ece1;hb=481150224edabeee0a6bbfdab232df58e5c1224e;hpb=fcb24360b1b14c9fe0e510282cf85f4e112eaf23

diff --git a/oggdec_filter.c b/oggdec_filter.c
index 6a97d6c6..1bc6d2f7 100644
--- a/oggdec_filter.c
+++ b/oggdec_filter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -8,12 +8,13 @@
 
 #include <regex.h>
 #include <vorbis/vorbisfile.h>
+#include <stdbool.h>
 
 #include "para.h"
-#include "oggdec_filter.cmdline.h"
 #include "list.h"
 #include "sched.h"
 #include "ggo.h"
+#include "buffer_tree.h"
 #include "filter.h"
 #include "error.h"
 #include "string.h"
@@ -29,35 +30,37 @@
 struct private_oggdec_data {
 	/** Describes an ogg vorbis file. */
 	OggVorbis_File *vf;
-	/** The input buffer. */
-	char *inbuf;
-	/** The length of \a inbuf. */
-	size_t inbuf_len;
 	/** The number of bytes consumed from the input buffer. */
 	size_t converted;
-	/** When to start producing output. */
+	/** The number of channels of the current stream. */
+	unsigned int channels;
+	/** Current sample rate in Hz. */
 	struct timeval stream_start;
+	unsigned int sample_rate;
 };
 
 static size_t cb_read(void *buf, size_t size, size_t nmemb, void *datasource)
 {
 	struct filter_node *fn = datasource;
 	struct private_oggdec_data *pod = fn->private_data;
-	size_t ret, have = pod->inbuf_len - pod->converted;
-	char *p = pod->inbuf + pod->converted;
-
-//	PARA_DEBUG_LOG("pod = %p\n", pod);
-//	PARA_DEBUG_LOG("vorbis requests %d bytes, have %d\n", size * nmemb, have);
-	if (pod->inbuf_len < size) {
-		if (*fn->fc->input_error)
-			return 0;
-		errno = EAGAIN;
-		return (size_t)-1;
-	}
-	ret = PARA_MIN(nmemb, have / size) * size;
-	memcpy(buf, p, ret);
-	pod->converted += ret;
-	return ret;
+	struct btr_node *btrn = fn->btrn;
+	char *btr_buf;
+	size_t nbytes = btr_next_buffer(btrn, &btr_buf), tmp;
+
+	/**
+	 * oggvorbis always uses size == 1. Other sizes would complicate the code
+	 * for no real gain. So we simply don't support size != 1.
+	 */
+	assert(size == 1);
+	assert(pod->converted <= nbytes);
+	tmp = nbytes - pod->converted;
+	PARA_DEBUG_LOG("vorbis requests %zu bytes have %zu\n", nmemb, tmp);
+	tmp = PARA_MIN(tmp, nmemb);
+	if (tmp == 0)
+		return 0;
+	memcpy(buf, btr_buf + pod->converted, tmp);
+	pod->converted += tmp;
+	return tmp;
 }
 
 /*
@@ -92,11 +95,9 @@ static void ogg_open(struct filter_node *fn)
 {
 	struct private_oggdec_data *pod = para_calloc(
 		sizeof(struct private_oggdec_data));
-	struct oggdec_filter_args_info *conf = fn->conf;
 
 	fn->private_data = pod;
-	fn->bufsize = conf->bufsize_arg * 1024;
-	fn->buf = para_malloc(fn->bufsize);
+	fn->min_iqs = 8000;
 }
 
 static void ogg_close(struct filter_node *fn)
@@ -108,109 +109,137 @@ static void ogg_close(struct filter_node *fn)
 		free(pod->vf);
 		pod->vf = NULL;
 	} else
-		PARA_DEBUG_LOG("nothing to close in fc %p, pod = %p\n", pod->vf, pod);
-	free(fn->buf);
-	fn->buf = NULL;
+		PARA_DEBUG_LOG("nothing to close\n");
 	free(fn->private_data);
 	fn->private_data = NULL;
 }
 
-static ssize_t ogg_convert(char *inbuffer, size_t len, struct filter_node *fn)
+#define OGGDEC_OUTPUT_CHUNK_SIZE (64 * 1024)
+
+static int oggdec_execute(struct btr_node *btrn, const char *cmd, char **result)
 {
-	ssize_t ret;
+	struct filter_node *fn = btr_context(btrn);
 	struct private_oggdec_data *pod = fn->private_data;
-	struct oggdec_filter_args_info *conf = fn->conf;
-	/* make the buffer known to the read callback cb_read() */
-	pod->inbuf = inbuffer;
-	pod->inbuf_len = len;
-	pod->converted = 0;
 
-	if (!pod->vf) {
-		if (*fn->fc->input_error < 0)
-			return *fn->fc->input_error;
-		if (!len)
-			return 0;
-		pod->vf = para_malloc(sizeof(struct OggVorbis_File));
-		PARA_NOTICE_LOG("input buffer: %zd, opening ov callbacks\n", len);
-		ret = ov_open_callbacks(fn, pod->vf,
-			NULL, /* no initial buffer */
-			0, /* no initial bytes */
-			ovc); /* the ov_open_callbacks */
-		if (ret == OV_ENOTVORBIS) {
-			/* this might be due to the input buffer being too small */
-			int ib = 1024 * conf->initial_buffer_arg; /* initial buffer */
-			if (len < ib) {
-				PARA_INFO_LOG("initial input buffer %zd/%d, "
-					"waiting for more data\n", len, ib);
-				free(pod->vf);
-				pod->vf = NULL;
-				return 0;
-			}
-			return -E_OGGDEC_NOTVORBIS;
+	return decoder_execute(cmd, pod->sample_rate, pod->channels, result);
+}
+
+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;
+
+	pod->vf = para_malloc(sizeof(struct OggVorbis_File));
+	PARA_NOTICE_LOG("iqs: %zu, min_iqs: %zu, opening ov callbacks\n",
+		btr_get_input_queue_size(btrn), 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;
+			PARA_CRIT_LOG("iqs: %zu\n", iqs);
+			btr_merge(btrn, fn->min_iqs);
+			pod->converted = 0;
+			goto open;
 		}
-		if (ret == OV_EREAD)
-			return -E_OGGDEC_READ;
-		if (ret == OV_EVERSION)
-			return -E_OGGDEC_VERSION;
-		if (ret == OV_EBADHEADER)
-			return -E_OGGDEC_BADHEADER;
-		if (ret < 0)
-			return -E_OGGDEC_FAULT;
-		fn->fc->channels = ov_info(pod->vf, 0)->channels;
-		fn->fc->samplerate = ov_info(pod->vf, 0)->rate;
-		PARA_NOTICE_LOG("%d channels, %d Hz\n", fn->fc->channels,
-			fn->fc->samplerate);
-		/* wait a bit to avoid buffer underruns */
-		tv_add(now, &(struct timeval){0, 500 * 1000}, &pod->stream_start);
-		return pod->converted;
-	}
-	if (tv_diff(now, &pod->stream_start, NULL) < 0) {
-		PARA_DEBUG_LOG("initial delay..\n");
-		return 0;
+		ret = (oret == OV_ENOTVORBIS)?
+			-E_OGGDEC_NOTVORBIS : -E_OGGDEC_BADHEADER;
+		goto out;
 	}
-	while (fn->loaded < fn->bufsize) {
-		int length = fn->bufsize - fn->loaded;
-		long read_ret = ov_read(pod->vf, fn->buf + fn->loaded, length,
-			ENDIAN, 2 /* 16 bit */, 1 /* signed */, NULL);
-		if (read_ret == 0)
-			return pod->converted;
-		if (read_ret == OV_HOLE) {
-			if (!fn->loaded) {
-				PARA_INFO_LOG("hole, delaying playback\n");
-				tv_add(now, &(struct timeval){0, 500 * 1000}, &pod->stream_start);
-			}
-			return pod->converted;
-		}
-		if (read_ret < 0)
-			return -E_OGGDEC_BADLINK;
-		fn->loaded += read_ret;
+	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->sample_rate = ov_info(pod->vf, 0)->rate;
+	tv_add(now, &(struct timeval)EMBRACE(0, 300 * 1000), &pod->stream_start);
+	PARA_NOTICE_LOG("%d channels, %d Hz\n", pod->channels,
+		pod->sample_rate);
+	ret = 1;
+out:
+	if (ret <= 0) {
+		free(pod->vf);
+		pod->vf = NULL;
+	} else {
+		btr_consume(btrn, pod->converted);
+		pod->converted = 0;
+		fn->min_iqs = 0;
 	}
-	return pod->converted;
+	return ret;
 }
 
-static int oggdec_parse_config(int argc, char **argv, void **config)
+static void ogg_pre_select(__a_unused struct sched *s, struct task *t)
 {
+	struct filter_node *fn = container_of(t, struct filter_node, task);
+	struct private_oggdec_data *pod = fn->private_data;
 	int ret;
-	struct oggdec_filter_args_info *ogg_conf;
-
-	ogg_conf = para_calloc(sizeof(*ogg_conf));
-	ret = -E_OGGDEC_SYNTAX;
-	if (oggdec_cmdline_parser(argc, argv, ogg_conf))
-		goto err;
-	ret = -ERRNO_TO_PARA_ERROR(EINVAL);
-	if (ogg_conf->bufsize_arg < 0)
-		goto err;
-	if (ogg_conf->bufsize_arg >= INT_MAX / 1024)
-		goto err;
-	if (ogg_conf->initial_buffer_arg < 0)
-		goto err;
-	if (ogg_conf->initial_buffer_arg >= INT_MAX / 1024)
-		goto err;
-	*config = ogg_conf;
-	return 1;
-err:
-	free(ogg_conf);
-	return ret;
+
+	t->error = 0;
+	ret = btr_node_status(fn->btrn, fn->min_iqs, BTR_NT_INTERNAL);
+	if (ret < 0)
+		sched_min_delay(s);
+	else
+		sched_request_barrier(&pod->stream_start, s);
+}
+
+static void ogg_post_select(__a_unused struct sched *s, struct task *t)
+{
+	struct filter_node *fn = container_of(t, struct filter_node, task);
+	struct private_oggdec_data *pod = fn->private_data;
+	struct btr_node *btrn = fn->btrn;
+	int ret, ns;
+
+	if (tv_diff(&pod->stream_start, now, NULL) > 0)
+		return;
+	pod->converted = 0;
+	t->error = 0;
+	ret = ns = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
+	if (!pod->vf) {
+		if (ret <= 0)
+			goto out;
+		btr_merge(btrn, fn->min_iqs);
+		ret = ogg_init(fn);
+		if (ret <= 0)
+			goto out;
+	}
+	for (;;) {
+		char *out = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE);
+		ssize_t read_ret = ov_read(pod->vf, out, OGGDEC_OUTPUT_CHUNK_SIZE,
+			ENDIAN, 2 /* 16 bit */, 1 /* signed */, NULL);
+		btr_consume(btrn, pod->converted);
+		pod->converted = 0;
+		if (read_ret <= 0)
+			free(out);
+		ret = ns;
+		if (read_ret == 0 || read_ret == OV_HOLE)
+			goto out;
+		ret = -E_OGGDEC_BADLINK;
+		if (read_ret < 0)
+			goto out;
+		btr_add_output(out, read_ret, btrn);
+		if (btr_get_output_queue_size(btrn) > 128 * 1024)
+			return; /* enough data for the moment */
+	}
+out:
+	if (ret < 0) {
+		t->error = ret;
+		btr_remove_node(btrn);
+	}
 }
 
 /**
@@ -220,15 +249,9 @@ err:
  */
 void oggdec_filter_init(struct filter *f)
 {
-	struct oggdec_filter_args_info dummy;
-
-	oggdec_cmdline_parser_init(&dummy);
 	f->open = ogg_open;
 	f->close = ogg_close;
-	f->convert = ogg_convert;
-	f->parse_config = oggdec_parse_config;
-	f->help = (struct ggo_help) {
-		.short_help = oggdec_filter_args_info_help,
-		.detailed_help = oggdec_filter_args_info_detailed_help
-	};
+	f->pre_select = ogg_pre_select;
+	f->post_select = ogg_post_select;
+	f->execute = oggdec_execute;
 }