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@@ -1,5 +1,5 @@
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/*
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- * Attenuated route Plug-In
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+ * Route Plug-In
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* Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
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*
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*
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@@ -29,496 +29,82 @@
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#include <sound/pcm.h>
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#include "pcm_plugin.h"
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-/* The best possible hack to support missing optimization in gcc 2.7.2.3 */
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-#if ROUTE_PLUGIN_RESOLUTION & (ROUTE_PLUGIN_RESOLUTION - 1) != 0
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-#define div(a) a /= ROUTE_PLUGIN_RESOLUTION
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-#elif ROUTE_PLUGIN_RESOLUTION == 16
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-#define div(a) a >>= 4
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-#else
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-#error "Add some code here"
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-#endif
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-
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-struct ttable_dst;
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-
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-typedef void (*route_channel_f)(struct snd_pcm_plugin *plugin,
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- const struct snd_pcm_plugin_channel *src_channels,
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- struct snd_pcm_plugin_channel *dst_channel,
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- struct ttable_dst *ttable, snd_pcm_uframes_t frames);
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-
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-struct ttable_src {
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- int channel;
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- int as_int;
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-};
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-
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-struct ttable_dst {
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- int att; /* Attenuated */
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- unsigned int nsrcs;
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- struct ttable_src *srcs;
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- route_channel_f func;
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-};
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-
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-struct route_priv {
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- enum {R_UINT32=0, R_UINT64=1} sum_type;
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- int get, put;
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- int conv;
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- int src_sample_size;
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- struct ttable_dst ttable[0];
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-};
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-
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-union sum {
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- u_int32_t as_uint32;
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- u_int64_t as_uint64;
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-};
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-
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-
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-static void route_to_channel_from_zero(struct snd_pcm_plugin *plugin,
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- const struct snd_pcm_plugin_channel *src_channels,
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- struct snd_pcm_plugin_channel *dst_channel,
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- struct ttable_dst *ttable,
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- snd_pcm_uframes_t frames)
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+static void zero_areas(struct snd_pcm_plugin_channel *dvp, int ndsts,
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+ snd_pcm_uframes_t frames, int format)
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{
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- if (dst_channel->wanted)
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- snd_pcm_area_silence(&dst_channel->area, 0, frames, plugin->dst_format.format);
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- dst_channel->enabled = 0;
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-}
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-
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-static void route_to_channel_from_one(struct snd_pcm_plugin *plugin,
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- const struct snd_pcm_plugin_channel *src_channels,
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- struct snd_pcm_plugin_channel *dst_channel,
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- struct ttable_dst *ttable,
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- snd_pcm_uframes_t frames)
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-{
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-#define CONV_LABELS
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-#include "plugin_ops.h"
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-#undef CONV_LABELS
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- struct route_priv *data = (struct route_priv *)plugin->extra_data;
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- void *conv;
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- const struct snd_pcm_plugin_channel *src_channel = NULL;
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- unsigned int srcidx;
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- char *src, *dst;
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- int src_step, dst_step;
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- for (srcidx = 0; srcidx < ttable->nsrcs; ++srcidx) {
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- src_channel = &src_channels[ttable->srcs[srcidx].channel];
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- if (src_channel->area.addr != NULL)
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- break;
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- }
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- if (srcidx == ttable->nsrcs) {
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- route_to_channel_from_zero(plugin, src_channels, dst_channel, ttable, frames);
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- return;
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- }
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-
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- dst_channel->enabled = 1;
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- conv = conv_labels[data->conv];
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- src = src_channel->area.addr + src_channel->area.first / 8;
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- src_step = src_channel->area.step / 8;
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- dst = dst_channel->area.addr + dst_channel->area.first / 8;
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- dst_step = dst_channel->area.step / 8;
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- while (frames-- > 0) {
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- goto *conv;
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-#define CONV_END after
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-#include "plugin_ops.h"
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-#undef CONV_END
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- after:
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- src += src_step;
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- dst += dst_step;
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+ int dst = 0;
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+ for (; dst < ndsts; ++dst) {
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+ if (dvp->wanted)
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+ snd_pcm_area_silence(&dvp->area, 0, frames, format);
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+ dvp->enabled = 0;
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+ dvp++;
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}
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}
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-static void route_to_channel(struct snd_pcm_plugin *plugin,
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- const struct snd_pcm_plugin_channel *src_channels,
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+static inline void copy_area(const struct snd_pcm_plugin_channel *src_channel,
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struct snd_pcm_plugin_channel *dst_channel,
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- struct ttable_dst *ttable, snd_pcm_uframes_t frames)
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+ snd_pcm_uframes_t frames, int format)
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{
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-#define GET_U_LABELS
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-#define PUT_U32_LABELS
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-#include "plugin_ops.h"
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-#undef GET_U_LABELS
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-#undef PUT_U32_LABELS
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- static void *zero_labels[2] = { &&zero_int32, &&zero_int64 };
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- /* sum_type att */
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- static void *add_labels[2 * 2] = { &&add_int32_noatt, &&add_int32_att,
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- &&add_int64_noatt, &&add_int64_att,
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- };
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- /* sum_type att shift */
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- static void *norm_labels[2 * 2 * 4] = { NULL,
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- &&norm_int32_8_noatt,
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- &&norm_int32_16_noatt,
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- &&norm_int32_24_noatt,
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- NULL,
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- &&norm_int32_8_att,
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- &&norm_int32_16_att,
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- &&norm_int32_24_att,
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- &&norm_int64_0_noatt,
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- &&norm_int64_8_noatt,
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- &&norm_int64_16_noatt,
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- &&norm_int64_24_noatt,
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- &&norm_int64_0_att,
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- &&norm_int64_8_att,
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- &&norm_int64_16_att,
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- &&norm_int64_24_att,
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- };
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- struct route_priv *data = (struct route_priv *)plugin->extra_data;
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- void *zero, *get, *add, *norm, *put_u32;
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- int nsrcs = ttable->nsrcs;
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- char *dst;
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- int dst_step;
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- char *srcs[nsrcs];
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- int src_steps[nsrcs];
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- struct ttable_src src_tt[nsrcs];
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- u_int32_t sample = 0;
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- int srcidx, srcidx1 = 0;
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- for (srcidx = 0; srcidx < nsrcs; ++srcidx) {
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- const struct snd_pcm_plugin_channel *src_channel = &src_channels[ttable->srcs[srcidx].channel];
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- if (!src_channel->enabled)
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- continue;
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- srcs[srcidx1] = src_channel->area.addr + src_channel->area.first / 8;
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- src_steps[srcidx1] = src_channel->area.step / 8;
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- src_tt[srcidx1] = ttable->srcs[srcidx];
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- srcidx1++;
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- }
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- nsrcs = srcidx1;
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- if (nsrcs == 0) {
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- route_to_channel_from_zero(plugin, src_channels, dst_channel, ttable, frames);
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- return;
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- } else if (nsrcs == 1 && src_tt[0].as_int == ROUTE_PLUGIN_RESOLUTION) {
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- route_to_channel_from_one(plugin, src_channels, dst_channel, ttable, frames);
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- return;
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- }
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-
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dst_channel->enabled = 1;
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- zero = zero_labels[data->sum_type];
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- get = get_u_labels[data->get];
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- add = add_labels[data->sum_type * 2 + ttable->att];
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- norm = norm_labels[data->sum_type * 8 + ttable->att * 4 + 4 - data->src_sample_size];
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- put_u32 = put_u32_labels[data->put];
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- dst = dst_channel->area.addr + dst_channel->area.first / 8;
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- dst_step = dst_channel->area.step / 8;
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-
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- while (frames-- > 0) {
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- struct ttable_src *ttp = src_tt;
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- union sum sum;
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-
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- /* Zero sum */
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- goto *zero;
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- zero_int32:
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- sum.as_uint32 = 0;
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- goto zero_end;
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- zero_int64:
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- sum.as_uint64 = 0;
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- goto zero_end;
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- zero_end:
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- for (srcidx = 0; srcidx < nsrcs; ++srcidx) {
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- char *src = srcs[srcidx];
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-
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- /* Get sample */
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- goto *get;
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-#define GET_U_END after_get
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-#include "plugin_ops.h"
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-#undef GET_U_END
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- after_get:
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-
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- /* Sum */
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- goto *add;
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- add_int32_att:
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- sum.as_uint32 += sample * ttp->as_int;
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- goto after_sum;
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- add_int32_noatt:
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- if (ttp->as_int)
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- sum.as_uint32 += sample;
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- goto after_sum;
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- add_int64_att:
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- sum.as_uint64 += (u_int64_t) sample * ttp->as_int;
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- goto after_sum;
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- add_int64_noatt:
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- if (ttp->as_int)
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- sum.as_uint64 += sample;
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- goto after_sum;
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- after_sum:
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- srcs[srcidx] += src_steps[srcidx];
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- ttp++;
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- }
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-
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- /* Normalization */
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- goto *norm;
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- norm_int32_8_att:
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- sum.as_uint64 = sum.as_uint32;
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- norm_int64_8_att:
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- sum.as_uint64 <<= 8;
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- norm_int64_0_att:
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- div(sum.as_uint64);
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- goto norm_int;
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-
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- norm_int32_16_att:
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- sum.as_uint64 = sum.as_uint32;
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- norm_int64_16_att:
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- sum.as_uint64 <<= 16;
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- div(sum.as_uint64);
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- goto norm_int;
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-
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- norm_int32_24_att:
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- sum.as_uint64 = sum.as_uint32;
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- norm_int64_24_att:
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- sum.as_uint64 <<= 24;
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- div(sum.as_uint64);
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- goto norm_int;
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-
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- norm_int32_8_noatt:
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- sum.as_uint64 = sum.as_uint32;
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- norm_int64_8_noatt:
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- sum.as_uint64 <<= 8;
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- goto norm_int;
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-
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- norm_int32_16_noatt:
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- sum.as_uint64 = sum.as_uint32;
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- norm_int64_16_noatt:
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- sum.as_uint64 <<= 16;
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- goto norm_int;
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-
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- norm_int32_24_noatt:
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- sum.as_uint64 = sum.as_uint32;
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- norm_int64_24_noatt:
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- sum.as_uint64 <<= 24;
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- goto norm_int;
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-
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- norm_int64_0_noatt:
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- norm_int:
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- if (sum.as_uint64 > (u_int32_t)0xffffffff)
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- sample = (u_int32_t)0xffffffff;
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- else
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- sample = sum.as_uint64;
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- goto after_norm;
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-
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- after_norm:
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-
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- /* Put sample */
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- goto *put_u32;
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-#define PUT_U32_END after_put_u32
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-#include "plugin_ops.h"
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-#undef PUT_U32_END
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- after_put_u32:
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-
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- dst += dst_step;
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- }
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-}
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-
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-static int route_src_channels_mask(struct snd_pcm_plugin *plugin,
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- unsigned long *dst_vmask,
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- unsigned long **src_vmask)
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-{
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- struct route_priv *data = (struct route_priv *)plugin->extra_data;
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- int schannels = plugin->src_format.channels;
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- int dchannels = plugin->dst_format.channels;
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- unsigned long *vmask = plugin->src_vmask;
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- int channel;
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- struct ttable_dst *dp = data->ttable;
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- bitmap_zero(vmask, schannels);
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- for (channel = 0; channel < dchannels; channel++, dp++) {
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- unsigned int src;
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- struct ttable_src *sp;
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- if (!test_bit(channel, dst_vmask))
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- continue;
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- sp = dp->srcs;
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- for (src = 0; src < dp->nsrcs; src++, sp++)
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- set_bit(sp->channel, vmask);
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- }
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- *src_vmask = vmask;
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- return 0;
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-}
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-
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-static int route_dst_channels_mask(struct snd_pcm_plugin *plugin,
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- unsigned long *src_vmask,
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- unsigned long **dst_vmask)
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-{
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- struct route_priv *data = (struct route_priv *)plugin->extra_data;
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- int dchannels = plugin->dst_format.channels;
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- unsigned long *vmask = plugin->dst_vmask;
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- int channel;
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- struct ttable_dst *dp = data->ttable;
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- bitmap_zero(vmask, dchannels);
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- for (channel = 0; channel < dchannels; channel++, dp++) {
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- unsigned int src;
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- struct ttable_src *sp;
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- sp = dp->srcs;
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- for (src = 0; src < dp->nsrcs; src++, sp++) {
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- if (test_bit(sp->channel, src_vmask)) {
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- set_bit(channel, vmask);
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- break;
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- }
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- }
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- }
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- *dst_vmask = vmask;
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- return 0;
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-}
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-
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-static void route_free(struct snd_pcm_plugin *plugin)
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-{
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- struct route_priv *data = (struct route_priv *)plugin->extra_data;
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- unsigned int dst_channel;
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- for (dst_channel = 0; dst_channel < plugin->dst_format.channels; ++dst_channel) {
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- kfree(data->ttable[dst_channel].srcs);
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- }
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-}
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-
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-static int route_load_ttable(struct snd_pcm_plugin *plugin,
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- const int *src_ttable)
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-{
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- struct route_priv *data;
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- unsigned int src_channel, dst_channel;
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- const int *sptr;
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- struct ttable_dst *dptr;
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- if (src_ttable == NULL)
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- return 0;
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- data = (struct route_priv *)plugin->extra_data;
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- dptr = data->ttable;
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- sptr = src_ttable;
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- plugin->private_free = route_free;
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- for (dst_channel = 0; dst_channel < plugin->dst_format.channels; ++dst_channel) {
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- int t = 0;
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- int att = 0;
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- int nsrcs = 0;
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- struct ttable_src srcs[plugin->src_format.channels];
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- for (src_channel = 0; src_channel < plugin->src_format.channels; ++src_channel) {
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- snd_assert(*sptr >= 0 || *sptr <= FULL, return -ENXIO);
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- if (*sptr != 0) {
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- srcs[nsrcs].channel = src_channel;
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- srcs[nsrcs].as_int = *sptr;
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- if (*sptr != FULL)
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- att = 1;
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- t += *sptr;
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- nsrcs++;
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- }
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- sptr++;
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- }
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- dptr->att = att;
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- dptr->nsrcs = nsrcs;
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- if (nsrcs == 0)
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- dptr->func = route_to_channel_from_zero;
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- else if (nsrcs == 1 && !att)
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- dptr->func = route_to_channel_from_one;
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- else
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- dptr->func = route_to_channel;
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- if (nsrcs > 0) {
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- int srcidx;
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- dptr->srcs = kcalloc(nsrcs, sizeof(*srcs), GFP_KERNEL);
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- for(srcidx = 0; srcidx < nsrcs; srcidx++)
|
|
|
- dptr->srcs[srcidx] = srcs[srcidx];
|
|
|
- } else
|
|
|
- dptr->srcs = NULL;
|
|
|
- dptr++;
|
|
|
- }
|
|
|
- return 0;
|
|
|
+ snd_pcm_area_copy(&src_channel->area, 0, &dst_channel->area, 0, frames, format);
|
|
|
}
|
|
|
|
|
|
static snd_pcm_sframes_t route_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)
|
|
|
+ const struct snd_pcm_plugin_channel *src_channels,
|
|
|
+ struct snd_pcm_plugin_channel *dst_channels,
|
|
|
+ snd_pcm_uframes_t frames)
|
|
|
{
|
|
|
- struct route_priv *data;
|
|
|
- int src_nchannels, dst_nchannels;
|
|
|
- int dst_channel;
|
|
|
- struct ttable_dst *ttp;
|
|
|
+ int nsrcs, ndsts, dst;
|
|
|
struct snd_pcm_plugin_channel *dvp;
|
|
|
+ int format;
|
|
|
|
|
|
snd_assert(plugin != NULL && src_channels != NULL && dst_channels != NULL, return -ENXIO);
|
|
|
if (frames == 0)
|
|
|
return 0;
|
|
|
- data = (struct route_priv *)plugin->extra_data;
|
|
|
|
|
|
- src_nchannels = plugin->src_format.channels;
|
|
|
- dst_nchannels = plugin->dst_format.channels;
|
|
|
+ nsrcs = plugin->src_format.channels;
|
|
|
+ ndsts = plugin->dst_format.channels;
|
|
|
|
|
|
-#ifdef CONFIG_SND_DEBUG
|
|
|
- {
|
|
|
- int src_channel;
|
|
|
- for (src_channel = 0; src_channel < src_nchannels; ++src_channel) {
|
|
|
- snd_assert(src_channels[src_channel].area.first % 8 == 0 ||
|
|
|
- src_channels[src_channel].area.step % 8 == 0,
|
|
|
- return -ENXIO);
|
|
|
- }
|
|
|
- for (dst_channel = 0; dst_channel < dst_nchannels; ++dst_channel) {
|
|
|
- snd_assert(dst_channels[dst_channel].area.first % 8 == 0 ||
|
|
|
- dst_channels[dst_channel].area.step % 8 == 0,
|
|
|
- return -ENXIO);
|
|
|
+ format = plugin->dst_format.format;
|
|
|
+ dvp = dst_channels;
|
|
|
+ if (nsrcs <= 1) {
|
|
|
+ /* expand to all channels */
|
|
|
+ for (dst = 0; dst < ndsts; ++dst) {
|
|
|
+ copy_area(src_channels, dvp, frames, format);
|
|
|
+ dvp++;
|
|
|
}
|
|
|
+ return frames;
|
|
|
}
|
|
|
-#endif
|
|
|
|
|
|
- ttp = data->ttable;
|
|
|
- dvp = dst_channels;
|
|
|
- for (dst_channel = 0; dst_channel < dst_nchannels; ++dst_channel) {
|
|
|
- ttp->func(plugin, src_channels, dvp, ttp, frames);
|
|
|
+ for (dst = 0; dst < ndsts && dst < nsrcs; ++dst) {
|
|
|
+ copy_area(src_channels, dvp, frames, format);
|
|
|
dvp++;
|
|
|
- ttp++;
|
|
|
+ src_channels++;
|
|
|
}
|
|
|
+ if (dst < ndsts)
|
|
|
+ zero_areas(dvp, ndsts - dst, frames, format);
|
|
|
return frames;
|
|
|
}
|
|
|
|
|
|
-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_route(struct snd_pcm_substream *plug,
|
|
|
struct snd_pcm_plugin_format *src_format,
|
|
|
struct snd_pcm_plugin_format *dst_format,
|
|
|
- int *ttable,
|
|
|
struct snd_pcm_plugin **r_plugin)
|
|
|
{
|
|
|
- struct route_priv *data;
|
|
|
struct snd_pcm_plugin *plugin;
|
|
|
int err;
|
|
|
|
|
|
snd_assert(r_plugin != NULL, return -ENXIO);
|
|
|
*r_plugin = NULL;
|
|
|
snd_assert(src_format->rate == dst_format->rate, return -ENXIO);
|
|
|
- snd_assert(snd_pcm_format_linear(src_format->format) != 0 &&
|
|
|
- snd_pcm_format_linear(dst_format->format) != 0,
|
|
|
- return -ENXIO);
|
|
|
+ snd_assert(src_format->format == dst_format->format, return -ENXIO);
|
|
|
|
|
|
- err = snd_pcm_plugin_build(plug, "attenuated route conversion",
|
|
|
- src_format, dst_format,
|
|
|
- sizeof(struct route_priv) +
|
|
|
- sizeof(data->ttable[0]) * dst_format->channels,
|
|
|
- &plugin);
|
|
|
+ err = snd_pcm_plugin_build(plug, "route conversion",
|
|
|
+ src_format, dst_format, 0, &plugin);
|
|
|
if (err < 0)
|
|
|
return err;
|
|
|
|
|
|
- data = (struct route_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->get >= 0 && data->get < 4*2*2, return -EINVAL);
|
|
|
- data->conv = conv_index(src_format->format, dst_format->format);
|
|
|
-
|
|
|
- if (snd_pcm_format_width(src_format->format) == 32)
|
|
|
- data->sum_type = R_UINT64;
|
|
|
- else
|
|
|
- data->sum_type = R_UINT32;
|
|
|
- data->src_sample_size = snd_pcm_format_width(src_format->format) / 8;
|
|
|
-
|
|
|
- if ((err = route_load_ttable(plugin, ttable)) < 0) {
|
|
|
- snd_pcm_plugin_free(plugin);
|
|
|
- return err;
|
|
|
- }
|
|
|
plugin->transfer = route_transfer;
|
|
|
- plugin->src_channels_mask = route_src_channels_mask;
|
|
|
- plugin->dst_channels_mask = route_dst_channels_mask;
|
|
|
*r_plugin = plugin;
|
|
|
return 0;
|
|
|
}
|
Takashi Iwai