X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=oggdec_filter.c;h=3222b4aaaaabc046ac3983359ae58d868861c46a;hp=3de62cbd7d494dd39b84b42006a5a43797550c91;hb=d1e6b28f66e243516d01916f9125baee75dd98d6;hpb=c87045a40b9462ebeb28cc169d7bb3721c9a81d3

diff --git a/oggdec_filter.c b/oggdec_filter.c
index 3de62cbd..3222b4aa 100644
--- a/oggdec_filter.c
+++ b/oggdec_filter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2014 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -8,10 +8,8 @@
 
 #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"
@@ -31,35 +29,38 @@
 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. */
-	struct timeval stream_start;
+	/** The number of channels of the current stream. */
+	unsigned int channels;
+	/** Current sample rate in Hz. */
+	unsigned int sample_rate;
+	/** Whether everything was decoded during the previous iteration. */
+	bool have_more;
 };
 
 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;
 }
 
 /*
@@ -92,125 +93,166 @@ static const ov_callbacks ovc = {
 
 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->private_data = para_calloc(sizeof(struct private_oggdec_data));
+	fn->min_iqs = 8000;
 }
 
 static void ogg_close(struct filter_node *fn)
 {
 	struct private_oggdec_data *pod = fn->private_data;
-	if (pod->vf) {
+
+	if (pod && pod->vf) {
 		PARA_DEBUG_LOG("ov_clearing %p, pod = %p\n", pod->vf, pod);
 		ov_clear(pod->vf);
 		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;
-	free(fn->private_data);
+		PARA_DEBUG_LOG("nothing to close\n");
+	free(pod);
 	fn->private_data = NULL;
 }
 
-static ssize_t ogg_convert(char *inbuffer, size_t len, struct filter_node *fn)
+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 || ret == OV_EBADHEADER) {
-			/* 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 ret == OV_ENOTVORBIS?
-				-E_OGGDEC_NOTVORBIS : -E_OGGDEC_BADHEADER;
+	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;
+	struct OggVorbis_File *vf = para_malloc(sizeof(*vf));
+
+	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, vf,
+		NULL, /* no initial buffer */
+		0, /* no initial bytes */
+		ovc); /* the ov_open_callbacks */
+	if (oret == OV_ENOTVORBIS || oret == OV_EBADHEADER) {
+		/* maybe the input buffer is 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);
+			pod->converted = 0;
+			goto open;
 		}
-		if (ret == OV_EREAD)
-			return -E_OGGDEC_READ;
-		if (ret == OV_EVERSION)
-			return -E_OGGDEC_VERSION;
-		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;
+		ret = (oret == OV_ENOTVORBIS)?
+			-E_OGGDEC_NOTVORBIS : -E_OGGDEC_BADHEADER;
+		goto out;
 	}
-	if (tv_diff(now, &pod->stream_start, NULL) < 0) {
-		PARA_DEBUG_LOG("initial delay..\n");
-		return 0;
-	}
-	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(vf, 0)->channels;
+	pod->sample_rate = ov_info(vf, 0)->rate;
+	PARA_NOTICE_LOG("%d channels, %d Hz\n", pod->channels,
+		pod->sample_rate);
+	ret = 1;
+out:
+	if (ret <= 0)
+		free(vf);
+	else {
+		btr_consume(btrn, pod->converted);
+		pod->converted = 0;
+		fn->min_iqs = 0;
+		pod->vf = vf;
+		pod->have_more = true;
 	}
-	return pod->converted;
+	return ret;
 }
 
-static int oggdec_parse_config(int argc, char **argv, void **config)
+#define OGGDEC_MAX_OUTPUT_SIZE (96 * 1024)
+#define OGGDEC_OUTPUT_CHUNK_SIZE (32 * 1024)
+
+static void ogg_pre_select(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;
-	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);
+
+	ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
+	if (ret != 0)
+		return sched_min_delay(s);
+	if (!pod->have_more)
+		return;
+	if (btr_get_output_queue_size(btrn) > OGGDEC_MAX_OUTPUT_SIZE)
+		return;
+	sched_min_delay(s);
+}
+
+static int 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, have;
+	char *buf;
+
+	ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
+	if (ret < 0) {
+		if (ret != -E_BTR_EOF) /* fatal error */
+			goto out;
+		if (fn->min_iqs == 0 && !pod->have_more) /* EOF */
+			goto out;
+		/* last ov_read() returned OV_HOLE */
+	} else if (ret == 0 && !pod->have_more) /* nothing to do */
+		goto out;
+	if (btr_get_output_queue_size(btrn) > OGGDEC_MAX_OUTPUT_SIZE)
+		return 0;
+	if (!pod->vf) {
+		if (ret <= 0)
+			goto out;
+		btr_merge(btrn, fn->min_iqs);
+		ret = ogg_init(fn);
+		goto out;
+	}
+	have = 0;
+	buf = para_malloc(OGGDEC_OUTPUT_CHUNK_SIZE);
+	for (;;) {
+		ret = ov_read(pod->vf, buf + have, OGGDEC_OUTPUT_CHUNK_SIZE - have,
+			ENDIAN, 2 /* 16 bit */, 1 /* signed */, NULL);
+		btr_consume(btrn, pod->converted);
+		pod->converted = 0;
+		if (ret <= 0)
+			break;
+		fn->min_iqs = 0;
+		have += ret;
+		if (have >= OGGDEC_OUTPUT_CHUNK_SIZE)
+			break;
+	}
+	pod->have_more = (ret > 0);
+	if (have > 0) {
+		if (have < OGGDEC_OUTPUT_CHUNK_SIZE)
+			buf = para_realloc(buf, have);
+		btr_add_output(buf, have, btrn);
+	} else
+		free(buf);
+	if (ret == OV_HOLE) /* avoid buffer underruns */
+		fn->min_iqs = 9000;
+	if (ret >= 0 || ret == OV_HOLE)
+		return 0;
+	ret = -E_OGGDEC_BADLINK;
+out:
+	if (ret < 0)
+		btr_remove_node(&fn->btrn);
 	return ret;
 }
 
@@ -221,15 +263,9 @@ 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;
 }