X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=alsa_write.c;h=8c12c728e551035bd8eca071216e3c7e44060de5;hp=e741578c66378d74926c28bea86a56c084bde255;hb=c4bfb18b78b3935b8dbf68f70b219cfb2a192979;hpb=aa179132db2bb4d29a6eef6074288b6b2f4573be

diff --git a/alsa_write.c b/alsa_write.c
index e741578c..8c12c728 100644
--- a/alsa_write.c
+++ b/alsa_write.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2012 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -16,7 +16,6 @@
 #include <sys/types.h>
 #include <alsa/asoundlib.h>
 #include <sys/time.h>
-#include <stdbool.h>
 
 #include "para.h"
 #include "fd.h"
@@ -73,7 +72,7 @@ static int alsa_init(struct private_alsa_write_data *pad,
 	snd_pcm_sw_params_t *swparams;
 	snd_pcm_uframes_t start_threshold, stop_threshold;
 	snd_pcm_uframes_t buffer_size, period_size;
-	snd_output_t *log;
+	snd_output_t *output_log;
 	unsigned buffer_time;
 	int ret;
 	const char *msg;
@@ -114,6 +113,8 @@ static int alsa_init(struct private_alsa_write_data *pad,
 		NULL);
 	if (ret < 0 || buffer_time == 0)
 		goto fail;
+	/* buffer at most 500 milliseconds */
+	buffer_time = PARA_MIN(buffer_time, 500U * 1000U);
 	msg = "could not set buffer time";
 	ret = snd_pcm_hw_params_set_buffer_time_near(pad->handle, hwparams,
 		&buffer_time, NULL);
@@ -162,12 +163,12 @@ static int alsa_init(struct private_alsa_write_data *pad,
 	ret = snd_pcm_nonblock(pad->handle, 1);
 	if (ret < 0)
 		goto fail;
-	ret = snd_output_buffer_open(&log);
+	ret = snd_output_buffer_open(&output_log);
 	if (ret == 0) {
 		char *buf;
 		PARA_INFO_LOG("dumping alsa configuration\n");
-		snd_pcm_dump(pad->handle, log);
-		snd_output_buffer_string(log, &buf);
+		snd_pcm_dump(pad->handle, output_log);
+		snd_output_buffer_string(output_log, &buf);
 		for (;;) {
 			char *p = strchr(buf, '\n');
 			if (!p) /* omit last output line, it's empty */
@@ -176,7 +177,7 @@ static int alsa_init(struct private_alsa_write_data *pad,
 			PARA_INFO_LOG("%s\n", buf);
 			buf = p + 1;
 		}
-		snd_output_close(log);
+		snd_output_close(output_log);
 	}
 	return 1;
 fail:
@@ -357,7 +358,6 @@ void alsa_write_init(struct writer *w)
 	w->pre_select = alsa_write_pre_select;
 	w->post_select = alsa_write_post_select;
 	w->parse_config_or_die = alsa_parse_config_or_die;
-	w->shutdown = NULL; /* nothing to do */
 	w->free_config = alsa_free_config;
 	w->help = (struct ggo_help) {
 		.short_help = alsa_write_args_info_help,