X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=mp3dec_filter.c;h=c3f21f126ad7911a67e82903bb0ac12cdb49c13e;hp=75745044514159adf9918a0757928df91c2249b7;hb=4bd379f56960bddd9623f78b80f40b1dc9337a99;hpb=c87045a40b9462ebeb28cc169d7bb3721c9a81d3

diff --git a/mp3dec_filter.c b/mp3dec_filter.c
index 75745044..c3f21f12 100644
--- a/mp3dec_filter.c
+++ b/mp3dec_filter.c
@@ -101,10 +101,9 @@ static void mp3dec_pre_select(struct sched *s, struct task *t)
 {
 	struct filter_node *fn = container_of(t, struct filter_node, task);
 	size_t iqs = btr_get_input_queue_size(fn->btrn);
-	struct private_mp3dec_data *pmd = fn->private_data;
 
 	t->error = 0;
-	if (iqs <= pmd->input_len_barrier)
+	if (iqs <= fn->min_iqs)
 		return;
 	if (btr_bytes_pending(fn->btrn) > MP3DEC_MAX_PENDING)
 		return; /* FIXME, should use reasonable bound on timeout */
@@ -207,23 +206,21 @@ static void mp3dec_post_select(__a_unused struct sched *s, struct task *t)
 	int i, ret;
 	struct private_mp3dec_data *pmd = fn->private_data;
 	struct btr_node *btrn = fn->btrn;
-	size_t loaded, used, len = btr_get_input_queue_size(btrn);
+	size_t loaded, used, len, iqs;
 	char *inbuffer, *outbuffer;
 
+next_buffer:
 	pmd->stream.error = 0;
 	t->error = 0;
-	if (btr_bytes_pending(btrn) > MP3DEC_MAX_PENDING)
-		return;
-	if (need_bad_data_delay(pmd, len))
+	iqs = btr_get_input_queue_size(btrn);
+	if (need_bad_data_delay(pmd, iqs))
 		return;
-	if (pmd->input_len_barrier != 0 && btr_no_parent(btrn)) {
-		ret = -E_MP3DEC_EOF;
+	ret = prepare_filter_node(btrn, fn->min_iqs);
+	if (ret < 0)
 		goto err;
-	}
-next_buffer:
-	len = btr_next_buffer(btrn, &inbuffer);
-	if (len == 0)
+	if (ret == 0)
 		return;
+	len = btr_next_buffer(btrn, &inbuffer);
 	mad_stream_buffer(&pmd->stream, (unsigned char *)inbuffer, len);
 next_frame:
 	ret = mad_header_decode(&pmd->frame.header, &pmd->stream);
@@ -231,16 +228,18 @@ next_frame:
 		used = used_mad_buffer_bytes(&pmd->stream, len);
 		btr_consume(btrn, used);
 		if (pmd->stream.error == MAD_ERROR_BUFLEN) {
-			pmd->input_len_barrier = len - used;
-			ret = btr_merge(btrn);
-			if (ret != 2)
-				return;
+			if (len == iqs && btr_no_parent(btrn)) {
+				ret = -E_MP3DEC_EOF;
+				goto err;
+			}
+			fn->min_iqs += 100;
+			goto next_buffer;
 		} else if (pmd->stream.error != MAD_ERROR_LOSTSYNC)
 			PARA_DEBUG_LOG("header decode: %s\n",
 				mad_stream_errorstr(&pmd->stream));
 		goto next_buffer;
 	}
-	pmd->input_len_barrier = 0;
+	fn->min_iqs = 0;
 	pmd->samplerate = pmd->frame.header.samplerate;
 	pmd->channels = MAD_NCHANNELS(&pmd->frame.header);
 	ret = mad_frame_decode(&pmd->frame, &pmd->stream);
@@ -316,6 +315,25 @@ err:
 	return ret;
 }
 
+static int mp3dec_execute(struct btr_node *btrn, const char *cmd, char **result)
+{
+	struct filter_node *fn = btr_context(btrn);
+	struct private_mp3dec_data *pmd = fn->private_data;
+
+	if (!strcmp(cmd, "samplerate")) {
+		if (pmd->samplerate == 0)
+			return -ERRNO_TO_PARA_ERROR(ENAVAIL);
+		*result = make_message("%u", pmd->samplerate);
+		return 1;
+	}
+	if (!strcmp(cmd, "channels")) {
+		if (pmd->channels == 0)
+			return -ERRNO_TO_PARA_ERROR(ENAVAIL);
+		*result = make_message("%u", pmd->channels);
+		return 1;
+	}
+	return -ERRNO_TO_PARA_ERROR(ENOTSUP);
+}
 /**
  * The init function of the mp3dec filter.
  *
@@ -334,6 +352,7 @@ void mp3dec_filter_init(struct filter *f)
 	f->parse_config = mp3dec_parse_config;
 	f->pre_select = mp3dec_pre_select;
 	f->post_select = mp3dec_post_select;
+	f->execute = mp3dec_execute;
 	f->help = (struct ggo_help) {
 		.short_help = mp3dec_filter_args_info_help,
 		.detailed_help = mp3dec_filter_args_info_detailed_help