[ALSA] PCM midlevel & PCM OSS - make procfs & OSS plugin code optional
Modules: ALSA Core,PCM Midlevel,ALSA<-OSS emulation,USB generic driver
1) The verbose procfs code for the PCM midlevel and usb audio
can be removed now (more patches will follow).
CONFIG_SND_VERBOSE_PROCFS
2) The PCM OSS plugin system can be also compiled optionaly.
CONFIG_SND_PCM_OSS_PLUGINS
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index f79755f..9dd121b 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -73,6 +73,15 @@
To compile this driver as a module, choose M here: the module
will be called snd-pcm-oss.
+config SND_PCM_OSS_PLUGINS
+ bool "OSS PCM (digital audio) API - Include plugin system"
+ depends on SND_PCM_OSS
+ default y
+ help
+ If you disable this option, the ALSA's OSS PCM API will not
+ support conversion of channels, formats and rates. It will
+ behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
+
config SND_SEQUENCER_OSS
bool "OSS Sequencer API"
depends on SND && SND_SEQUENCER
@@ -130,6 +139,15 @@
Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
or older).
+config SND_VERBOSE_PROCFS
+ bool "Verbose procfs contents"
+ depends on SND
+ default y
+ help
+ Say Y here to include code for verbose procfs contents (provides
+ usefull information to developers when a problem occurs). On the
+ other side, it makes the ALSA subsystem larger.
+
config SND_VERBOSE_PRINTK
bool "Verbose printk"
depends on SND
diff --git a/sound/core/oss/copy.c b/sound/core/oss/copy.c
index d6a04c2..7c008c4 100644
--- a/sound/core/oss/copy.c
+++ b/sound/core/oss/copy.c
@@ -20,6 +20,9 @@
*/
#include <sound/driver.h>
+
+#ifdef SND_PCM_OSS_PLUGINS
+
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -85,3 +88,5 @@
*r_plugin = plugin;
return 0;
}
+
+#endif
diff --git a/sound/core/oss/io.c b/sound/core/oss/io.c
index 322702e..b6e7ce3 100644
--- a/sound/core/oss/io.c
+++ b/sound/core/oss/io.c
@@ -20,6 +20,9 @@
*/
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -132,3 +135,5 @@
*r_plugin = plugin;
return 0;
}
+
+#endif
diff --git a/sound/core/oss/linear.c b/sound/core/oss/linear.c
index 8cbfa41..ef33123 100644
--- a/sound/core/oss/linear.c
+++ b/sound/core/oss/linear.c
@@ -21,6 +21,9 @@
*/
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -156,3 +159,5 @@
*r_plugin = plugin;
return 0;
}
+
+#endif
diff --git a/sound/core/oss/mulaw.c b/sound/core/oss/mulaw.c
index 14f5578..ed12c81 100644
--- a/sound/core/oss/mulaw.c
+++ b/sound/core/oss/mulaw.c
@@ -22,6 +22,9 @@
*/
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -306,3 +309,5 @@
*r_plugin = plugin;
return 0;
}
+
+#endif
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index 7fd0723..bc24d02 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -78,6 +78,7 @@
set_fs(fs);
}
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
static int snd_pcm_oss_plugin_clear(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -122,6 +123,7 @@
}
return 0;
}
+#endif /* CONFIG_SND_PCM_OSS_PLUGINS */
static long snd_pcm_oss_bytes(struct snd_pcm_substream *substream, long frames)
{
@@ -412,6 +414,7 @@
oss_frame_size = snd_pcm_format_physical_width(params_format(params)) *
params_channels(params) / 8;
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
snd_pcm_oss_plugin_clear(substream);
if (!direct) {
/* add necessary plugins */
@@ -441,6 +444,7 @@
}
}
}
+#endif
err = snd_pcm_oss_period_size(substream, params, sparams);
if (err < 0)
@@ -498,11 +502,13 @@
runtime->oss.periods = params_periods(sparams);
oss_period_size = snd_pcm_plug_client_size(substream, params_period_size(sparams));
snd_assert(oss_period_size >= 0, err = -EINVAL; goto failure);
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
if (runtime->oss.plugin_first) {
err = snd_pcm_plug_alloc(substream, oss_period_size);
if (err < 0)
goto failure;
}
+#endif
oss_period_size *= oss_frame_size;
oss_buffer_size = oss_period_size * runtime->oss.periods;
@@ -784,6 +790,7 @@
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_sframes_t frames, frames1;
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
if (runtime->oss.plugin_first) {
struct snd_pcm_plugin_channel *channels;
size_t oss_frame_bytes = (runtime->oss.plugin_first->src_width * runtime->oss.plugin_first->src_format.channels) / 8;
@@ -800,7 +807,9 @@
if (frames1 <= 0)
return frames1;
bytes = frames1 * oss_frame_bytes;
- } else {
+ } else
+#endif
+ {
frames = bytes_to_frames(runtime, bytes);
frames1 = snd_pcm_oss_write3(substream, buf, frames, in_kernel);
if (frames1 <= 0)
@@ -871,6 +880,7 @@
{
struct snd_pcm_runtime *runtime = substream->runtime;
snd_pcm_sframes_t frames, frames1;
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
char __user *final_dst = (char __user *)buf;
if (runtime->oss.plugin_first) {
struct snd_pcm_plugin_channel *channels;
@@ -887,7 +897,9 @@
bytes = frames1 * oss_frame_bytes;
if (!in_kernel && copy_to_user(final_dst, buf, bytes))
return -EFAULT;
- } else {
+ } else
+#endif
+ {
frames = bytes_to_frames(runtime, bytes);
frames1 = snd_pcm_oss_read3(substream, buf, frames, in_kernel);
if (frames1 <= 0)
@@ -1692,7 +1704,9 @@
struct snd_pcm_runtime *runtime;
runtime = substream->runtime;
vfree(runtime->oss.buffer);
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
snd_pcm_oss_plugin_clear(substream);
+#endif
substream->oss.file = NULL;
substream->oss.oss = 0;
}
@@ -2246,8 +2260,10 @@
if ((err = snd_pcm_oss_change_params(substream)) < 0)
return err;
}
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
if (runtime->oss.plugin_first != NULL)
return -EIO;
+#endif
if (area->vm_pgoff != 0)
return -EINVAL;
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c
index 7e86768..89bc8f9 100644
--- a/sound/core/oss/pcm_plugin.c
+++ b/sound/core/oss/pcm_plugin.c
@@ -25,6 +25,9 @@
#endif
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/vmalloc.h>
@@ -916,3 +919,5 @@
}
return 0;
}
+
+#endif
diff --git a/sound/core/oss/pcm_plugin.h b/sound/core/oss/pcm_plugin.h
index 29198da..a8a4f95 100644
--- a/sound/core/oss/pcm_plugin.h
+++ b/sound/core/oss/pcm_plugin.h
@@ -22,6 +22,8 @@
*
*/
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/bitmap.h>
static inline unsigned long *bitmap_alloc(unsigned int nbits)
@@ -191,6 +193,14 @@
const struct snd_pcm_plugin_channel *dst_channel,
size_t samples);
+#else
+
+static inline snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size) { return drv_size; }
+static inline snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size) { return clt_size; }
+static inline int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask) { return format; }
+
+#endif
+
#ifdef PLUGIN_DEBUG
#define pdprintf( fmt, args... ) printk( "plugin: " fmt, ##args)
#else
diff --git a/sound/core/oss/rate.c b/sound/core/oss/rate.c
index 4854cef..c4b75bf 100644
--- a/sound/core/oss/rate.c
+++ b/sound/core/oss/rate.c
@@ -20,6 +20,9 @@
*/
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -377,3 +380,5 @@
*r_plugin = plugin;
return 0;
}
+
+#endif
diff --git a/sound/core/oss/route.c b/sound/core/oss/route.c
index 726c5ca..f99a54e 100644
--- a/sound/core/oss/route.c
+++ b/sound/core/oss/route.c
@@ -20,6 +20,9 @@
*/
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/slab.h>
#include <linux/time.h>
#include <sound/core.h>
@@ -519,3 +522,5 @@
*r_plugin = plugin;
return 0;
}
+
+#endif
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 28ca61e..d92c3ce 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -140,6 +140,9 @@
}
return -ENOIOCTLCMD;
}
+
+#if defined(CONFIG_PROC_FS) && defined(CONFIG_SND_VERBOSE_PROCFS)
+
#define STATE(v) [SNDRV_PCM_STATE_##v] = #v
#define STREAM(v) [SNDRV_PCM_STREAM_##v] = #v
#define READY(v) [SNDRV_PCM_READY_##v] = #v
@@ -197,7 +200,6 @@
return snd_pcm_format_names[format];
}
-#ifdef CONFIG_PROC_FS
static char *snd_pcm_stream_names[] = {
STREAM(PLAYBACK),
STREAM(CAPTURE),