X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sound%2Fcore%2Foss%2Fmulaw.c;h=2eb18807e6d04662f9d85bed3355d8ad2cd5b5e6;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=0d16c620f64624dca20a7a492c8339852f187d34;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/sound/core/oss/mulaw.c b/sound/core/oss/mulaw.c
index 0d16c620f..2eb18807e 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>
@@ -139,25 +142,25 @@ static int ulaw2linear(unsigned char u_val)
  *  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;
@@ -191,15 +194,15 @@ static void mulaw_decode(snd_pcm_plugin_t *plugin,
 	}
 }
 
-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;
@@ -234,12 +237,12 @@ static void mulaw_encode(snd_pcm_plugin_t *plugin,
 	}
 }
 
-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)
@@ -257,20 +260,39 @@ static snd_pcm_sframes_t mulaw_transfer(snd_pcm_plugin_t *plugin,
 		}
 	}
 #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);
@@ -295,13 +317,16 @@ int snd_pcm_plugin_build_mulaw(snd_pcm_plug_t *plug,
 
 	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);
 	plugin->transfer = mulaw_transfer;
 	*r_plugin = plugin;
 	return 0;
 }
+
+#endif