*/
#include <sound/driver.h>
+
+#ifdef CONFIG_SND_PCM_OSS_PLUGINS
+
#include <linux/time.h>
#include <sound/core.h>
#include <sound/pcm.h>
* Basic Mu-Law plugin
*/
-typedef void (*mulaw_f)(snd_pcm_plugin_t *plugin,
- const snd_pcm_plugin_channel_t *src_channels,
- snd_pcm_plugin_channel_t *dst_channels,
+typedef void (*mulaw_f)(struct snd_pcm_plugin *plugin,
+ const struct snd_pcm_plugin_channel *src_channels,
+ struct snd_pcm_plugin_channel *dst_channels,
snd_pcm_uframes_t frames);
-typedef struct mulaw_private_data {
+struct mulaw_priv {
mulaw_f func;
int conv;
-} mulaw_t;
+};
-static void mulaw_decode(snd_pcm_plugin_t *plugin,
- const snd_pcm_plugin_channel_t *src_channels,
- snd_pcm_plugin_channel_t *dst_channels,
+static void mulaw_decode(struct snd_pcm_plugin *plugin,
+ const struct snd_pcm_plugin_channel *src_channels,
+ struct snd_pcm_plugin_channel *dst_channels,
snd_pcm_uframes_t frames)
{
#define PUT_S16_LABELS
#include "plugin_ops.h"
#undef PUT_S16_LABELS
- mulaw_t *data = (mulaw_t *)plugin->extra_data;
+ struct mulaw_priv *data = (struct mulaw_priv *)plugin->extra_data;
void *put = put_s16_labels[data->conv];
int channel;
int nchannels = plugin->src_format.channels;
}
}
-static void mulaw_encode(snd_pcm_plugin_t *plugin,
- const snd_pcm_plugin_channel_t *src_channels,
- snd_pcm_plugin_channel_t *dst_channels,
+static void mulaw_encode(struct snd_pcm_plugin *plugin,
+ const struct snd_pcm_plugin_channel *src_channels,
+ struct snd_pcm_plugin_channel *dst_channels,
snd_pcm_uframes_t frames)
{
#define GET_S16_LABELS
#include "plugin_ops.h"
#undef GET_S16_LABELS
- mulaw_t *data = (mulaw_t *)plugin->extra_data;
+ struct mulaw_priv *data = (struct mulaw_priv *)plugin->extra_data;
void *get = get_s16_labels[data->conv];
int channel;
int nchannels = plugin->src_format.channels;
}
}
-static snd_pcm_sframes_t mulaw_transfer(snd_pcm_plugin_t *plugin,
- const snd_pcm_plugin_channel_t *src_channels,
- snd_pcm_plugin_channel_t *dst_channels,
+static snd_pcm_sframes_t mulaw_transfer(struct snd_pcm_plugin *plugin,
+ const struct snd_pcm_plugin_channel *src_channels,
+ struct snd_pcm_plugin_channel *dst_channels,
snd_pcm_uframes_t frames)
{
- mulaw_t *data;
+ struct mulaw_priv *data;
snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO);
if (frames == 0)
}
}
#endif
- data = (mulaw_t *)plugin->extra_data;
+ data = (struct mulaw_priv *)plugin->extra_data;
data->func(plugin, src_channels, dst_channels, frames);
return frames;
}
-int snd_pcm_plugin_build_mulaw(snd_pcm_plug_t *plug,
- snd_pcm_plugin_format_t *src_format,
- snd_pcm_plugin_format_t *dst_format,
- snd_pcm_plugin_t **r_plugin)
+static int getput_index(int format)
+{
+ int sign, width, endian;
+ sign = !snd_pcm_format_signed(format);
+ width = snd_pcm_format_width(format) / 8 - 1;
+ if (width < 0 || width > 3) {
+ snd_printk(KERN_ERR "snd-pcm-oss: invalid format %d\n", format);
+ width = 0;
+ }
+#ifdef SNDRV_LITTLE_ENDIAN
+ endian = snd_pcm_format_big_endian(format);
+#else
+ endian = snd_pcm_format_little_endian(format);
+#endif
+ if (endian < 0)
+ endian = 0;
+ return width * 4 + endian * 2 + sign;
+}
+
+int snd_pcm_plugin_build_mulaw(struct snd_pcm_substream *plug,
+ struct snd_pcm_plugin_format *src_format,
+ struct snd_pcm_plugin_format *dst_format,
+ struct snd_pcm_plugin **r_plugin)
{
int err;
- mulaw_t *data;
- snd_pcm_plugin_t *plugin;
- snd_pcm_plugin_format_t *format;
+ struct mulaw_priv *data;
+ struct snd_pcm_plugin *plugin;
+ struct snd_pcm_plugin_format *format;
mulaw_f func;
snd_assert(r_plugin != NULL, return -ENXIO);
err = snd_pcm_plugin_build(plug, "Mu-Law<->linear conversion",
src_format, dst_format,
- sizeof(mulaw_t), &plugin);
+ sizeof(struct mulaw_priv), &plugin);
if (err < 0)
return err;
- data = (mulaw_t*)plugin->extra_data;
+ data = (struct mulaw_priv *)plugin->extra_data;
data->func = func;
data->conv = getput_index(format->format);
snd_assert(data->conv >= 0 && data->conv < 4*2*2, return -EINVAL);
*r_plugin = plugin;
return 0;
}
+
+#endif