[ALSA] Clean up pcm-oss plugins

Modules: ALSA<-OSS emulation

Clean up pcm-oss plugin codes.
Removed dead codes, and simplified route/rate plugins.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 20 insertions, 60 deletions

diff --git a/sound/core/oss/rate.c b/sound/core/oss/rate.c
index c4b75bff0ee5..18d8a0f4e816 100644
--- a/sound/core/oss/rate.c
+++ b/sound/core/oss/rate.c
@@ -50,7 +50,6 @@ struct rate_priv {
         unsigned int pitch;
         unsigned int pos;
         rate_f func;
-        int get, put;
         snd_pcm_sframes_t old_src_frames, old_dst_frames;
         struct rate_channel channels[0];
 };
@@ -74,21 +73,12 @@ static void resample_expand(struct snd_pcm_plugin *plugin,
         unsigned int pos = 0;
         signed int val;
         signed short S1, S2;
-        char *src, *dst;
+        signed short *src, *dst;
         unsigned int channel;
         int src_step, dst_step;
         int src_frames1, dst_frames1;
         struct rate_priv *data = (struct rate_priv *)plugin->extra_data;
         struct rate_channel *rchannels = data->channels;
-
-#define GET_S16_LABELS
-#define PUT_S16_LABELS
-#include "plugin_ops.h"
-#undef GET_S16_LABELS
-#undef PUT_S16_LABELS
-        void *get = get_s16_labels[data->get];
-        void *put = put_s16_labels[data->put];
-        signed short sample = 0;
         
         for (channel = 0; channel < plugin->src_format.channels; channel++) {
                 pos = data->pos;
@@ -101,10 +91,12 @@ static void resample_expand(struct snd_pcm_plugin *plugin,
                         continue;
                 }
                 dst_channels[channel].enabled = 1;
-                src = (char *)src_channels[channel].area.addr + src_channels[channel].area.first / 8;
-                dst = (char *)dst_channels[channel].area.addr + dst_channels[channel].area.first / 8;
-                src_step = src_channels[channel].area.step / 8;
-                dst_step = dst_channels[channel].area.step / 8;
+                src = (signed short *)src_channels[channel].area.addr +
+                        src_channels[channel].area.first / 8 / 2;
+                dst = (signed short *)dst_channels[channel].area.addr +
+                        dst_channels[channel].area.first / 8 / 2;
+                src_step = src_channels[channel].area.step / 8 / 2;
+                dst_step = dst_channels[channel].area.step / 8 / 2;
                 src_frames1 = src_frames;
                 dst_frames1 = dst_frames;
                 while (dst_frames1-- > 0) {
@@ -112,12 +104,7 @@ static void resample_expand(struct snd_pcm_plugin *plugin,
                                 pos &= R_MASK;
                                 S1 = S2;
                                 if (src_frames1-- > 0) {
-                                        goto *get;
-#define GET_S16_END after_get
-#include "plugin_ops.h"
-#undef GET_S16_END
-                                after_get:
-                                        S2 = sample;
+                                        S2 = *src;
                                         src += src_step;
                                 }
                         }
@@ -126,12 +113,7 @@ static void resample_expand(struct snd_pcm_plugin *plugin,
                                 val = -32768;
                         else if (val > 32767)
                                 val = 32767;
-                        sample = val;
-                        goto *put;
-#define PUT_S16_END after_put
-#include "plugin_ops.h"
-#undef PUT_S16_END
-                after_put:
+                        *dst = val;
                         dst += dst_step;
                         pos += data->pitch;
                 }
@@ -150,21 +132,12 @@ static void resample_shrink(struct snd_pcm_plugin *plugin,
         unsigned int pos = 0;
         signed int val;
         signed short S1, S2;
-        char *src, *dst;
+        signed short *src, *dst;
         unsigned int channel;
         int src_step, dst_step;
         int src_frames1, dst_frames1;
         struct rate_priv *data = (struct rate_priv *)plugin->extra_data;
         struct rate_channel *rchannels = data->channels;
-        
-#define GET_S16_LABELS
-#define PUT_S16_LABELS
-#include "plugin_ops.h"
-#undef GET_S16_LABELS
-#undef PUT_S16_LABELS
-        void *get = get_s16_labels[data->get];
-        void *put = put_s16_labels[data->put];
-        signed short sample = 0;
 
         for (channel = 0; channel < plugin->src_format.channels; ++channel) {
                 pos = data->pos;
@@ -177,21 +150,18 @@ static void resample_shrink(struct snd_pcm_plugin *plugin,
                         continue;
                 }
                 dst_channels[channel].enabled = 1;
-                src = (char *)src_channels[channel].area.addr + src_channels[channel].area.first / 8;
-                dst = (char *)dst_channels[channel].area.addr + dst_channels[channel].area.first / 8;
-                src_step = src_channels[channel].area.step / 8;
-                dst_step = dst_channels[channel].area.step / 8;
+                src = (signed short *)src_channels[channel].area.addr +
+                        src_channels[channel].area.first / 8 / 2;
+                dst = (signed short *)dst_channels[channel].area.addr +
+                        dst_channels[channel].area.first / 8 / 2;
+                src_step = src_channels[channel].area.step / 8 / 2;
+                dst_step = dst_channels[channel].area.step / 8 / 2;
                 src_frames1 = src_frames;
                 dst_frames1 = dst_frames;
                 while (dst_frames1 > 0) {
                         S1 = S2;
                         if (src_frames1-- > 0) {
-                                goto *get;
-#define GET_S16_END after_get
-#include "plugin_ops.h"
-#undef GET_S16_END
-                        after_get:
-                                S2 = sample;
+                                S1 = *src;
                                 src += src_step;
                         }
                         if (pos & ~R_MASK) {
@@ -201,12 +171,7 @@ static void resample_shrink(struct snd_pcm_plugin *plugin,
                                         val = -32768;
                                 else if (val > 32767)
                                         val = 32767;
-                                sample = val;
-                                goto *put;
-#define PUT_S16_END after_put
-#include "plugin_ops.h"
-#undef PUT_S16_END
-                        after_put:
+                                *dst = val;
                                 dst += dst_step;
                                 dst_frames1--;
                         }
@@ -346,8 +311,8 @@ int snd_pcm_plugin_build_rate(struct snd_pcm_substream *plug,
 
         snd_assert(src_format->channels == dst_format->channels, return -ENXIO);
         snd_assert(src_format->channels > 0, return -ENXIO);
-        snd_assert(snd_pcm_format_linear(src_format->format) != 0, return -ENXIO);
-        snd_assert(snd_pcm_format_linear(dst_format->format) != 0, return -ENXIO);
+        snd_assert(src_format->format == SNDRV_PCM_FORMAT_S16, return -ENXIO);
+        snd_assert(dst_format->format == SNDRV_PCM_FORMAT_S16, return -ENXIO);
         snd_assert(src_format->rate != dst_format->rate, return -ENXIO);
 
         err = snd_pcm_plugin_build(plug, "rate conversion",
@@ -358,11 +323,6 @@ int snd_pcm_plugin_build_rate(struct snd_pcm_substream *plug,
         if (err < 0)
                 return err;
         data = (struct rate_priv *)plugin->extra_data;
-        data->get = getput_index(src_format->format);
-        snd_assert(data->get >= 0 && data->get < 4*2*2, return -EINVAL);
-        data->put = getput_index(dst_format->format);
-        snd_assert(data->put >= 0 && data->put < 4*2*2, return -EINVAL);
-
         if (src_format->rate < dst_format->rate) {
                 data->pitch = ((src_format->rate << SHIFT) + (dst_format->rate >> 1)) / dst_format->rate;
                 data->func = resample_expand;