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[ALSA] Clean up pcm-oss plugins

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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>
This commit is contained in:
Takashi Iwai 2006-01-13 12:09:12 +01:00 committed by Jaroslav Kysela
parent 9d83911ac0
commit 0534ab4279
7 changed files with 119 additions and 926 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/core/oss/linear.c
View File

@ -106,7 +106,7 @@ static snd_pcm_sframes_t linear_transfer(struct snd_pcm_plugin *plugin,
return frames;
}
int conv_index(int src_format, int dst_format)
static int conv_index(int src_format, int dst_format)
{
int src_endian, dst_endian, sign, src_width, dst_width;

19
sound/core/oss/mulaw.c
View File

@ -265,6 +265,25 @@ static snd_pcm_sframes_t mulaw_transfer(struct snd_pcm_plugin *plugin,
return frames;
}
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,

264
sound/core/oss/pcm_plugin.c
View File

@ -39,26 +39,6 @@
#define snd_pcm_plug_first(plug) ((plug)->runtime->oss.plugin_first)
#define snd_pcm_plug_last(plug) ((plug)->runtime->oss.plugin_last)
static int snd_pcm_plugin_src_channels_mask(struct snd_pcm_plugin *plugin,
unsigned long *dst_vmask,
unsigned long **src_vmask)
{
unsigned long *vmask = plugin->src_vmask;
bitmap_copy(vmask, dst_vmask, plugin->src_format.channels);
*src_vmask = vmask;
return 0;
}
static int snd_pcm_plugin_dst_channels_mask(struct snd_pcm_plugin *plugin,
unsigned long *src_vmask,
unsigned long **dst_vmask)
{
unsigned long *vmask = plugin->dst_vmask;
bitmap_copy(vmask, src_vmask, plugin->dst_format.channels);
*dst_vmask = vmask;
return 0;
}
/*
* because some cards might have rates "very close", we ignore
* all "resampling" requests within +-5%
@ -196,19 +176,7 @@ int snd_pcm_plugin_build(struct snd_pcm_substream *plug,
snd_pcm_plugin_free(plugin);
return -ENOMEM;
}
plugin->src_vmask = bitmap_alloc(src_format->channels);
if (plugin->src_vmask == NULL) {
snd_pcm_plugin_free(plugin);
return -ENOMEM;
}
plugin->dst_vmask = bitmap_alloc(dst_format->channels);
if (plugin->dst_vmask == NULL) {
snd_pcm_plugin_free(plugin);
return -ENOMEM;
}
plugin->client_channels = snd_pcm_plugin_client_channels;
plugin->src_channels_mask = snd_pcm_plugin_src_channels_mask;
plugin->dst_channels_mask = snd_pcm_plugin_dst_channels_mask;
*ret = plugin;
return 0;
}
@ -221,8 +189,6 @@ int snd_pcm_plugin_free(struct snd_pcm_plugin *plugin)
plugin->private_free(plugin);
kfree(plugin->buf_channels);
vfree(plugin->buf);
kfree(plugin->src_vmask);
kfree(plugin->dst_vmask);
kfree(plugin);
return 0;
}
@ -432,24 +398,14 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug,
dstformat.channels);
/* Format change (linearization) */
if ((srcformat.format != dstformat.format ||
!rate_match(srcformat.rate, dstformat.rate) ||
srcformat.channels != dstformat.channels) &&
!snd_pcm_format_linear(srcformat.format)) {
if (snd_pcm_format_linear(dstformat.format))
tmpformat.format = dstformat.format;
else
tmpformat.format = SNDRV_PCM_FORMAT_S16;
switch (srcformat.format) {
case SNDRV_PCM_FORMAT_MU_LAW:
err = snd_pcm_plugin_build_mulaw(plug,
&srcformat, &tmpformat,
&plugin);
break;
default:
if (! rate_match(srcformat.rate, dstformat.rate) &&
! snd_pcm_format_linear(srcformat.format)) {
if (srcformat.format != SNDRV_PCM_FORMAT_MU_LAW)
return -EINVAL;
}
pdprintf("format change: src=%i, dst=%i returns %i\n", srcformat.format, tmpformat.format, err);
tmpformat.format = SNDRV_PCM_FORMAT_S16;
err = snd_pcm_plugin_build_mulaw(plug,
&srcformat, &tmpformat,
&plugin);
if (err < 0)
return err;
err = snd_pcm_plugin_append(plugin);
@ -463,35 +419,11 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug,
/* channels reduction */
if (srcformat.channels > dstformat.channels) {
int sv = srcformat.channels;
int dv = dstformat.channels;
int *ttable = kcalloc(dv * sv, sizeof(*ttable), GFP_KERNEL);
if (ttable == NULL)
return -ENOMEM;
#if 1
if (sv == 2 && dv == 1) {
ttable[0] = HALF;
ttable[1] = HALF;
} else
#endif
{
int v;
for (v = 0; v < dv; ++v)
ttable[v * sv + v] = FULL;
}
tmpformat.channels = dstformat.channels;
if (rate_match(srcformat.rate, dstformat.rate) &&
snd_pcm_format_linear(dstformat.format))
tmpformat.format = dstformat.format;
err = snd_pcm_plugin_build_route(plug,
&srcformat, &tmpformat,
ttable, &plugin);
kfree(ttable);
err = snd_pcm_plugin_build_route(plug, &srcformat, &tmpformat, &plugin);
pdprintf("channels reduction: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err);
if (err < 0) {
snd_pcm_plugin_free(plugin);
if (err < 0)
return err;
}
err = snd_pcm_plugin_append(plugin);
if (err < 0) {
snd_pcm_plugin_free(plugin);
@ -503,18 +435,29 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug,
/* rate resampling */
if (!rate_match(srcformat.rate, dstformat.rate)) {
if (srcformat.format != SNDRV_PCM_FORMAT_S16) {
/* convert to S16 for resampling */
tmpformat.format = SNDRV_PCM_FORMAT_S16;
err = snd_pcm_plugin_build_linear(plug,
&srcformat, &tmpformat,
&plugin);
if (err < 0)
return err;
err = snd_pcm_plugin_append(plugin);
if (err < 0) {
snd_pcm_plugin_free(plugin);
return err;
}
srcformat = tmpformat;
src_access = dst_access;
}
tmpformat.rate = dstformat.rate;
if (srcformat.channels == dstformat.channels &&
snd_pcm_format_linear(dstformat.format))
tmpformat.format = dstformat.format;
err = snd_pcm_plugin_build_rate(plug,
&srcformat, &tmpformat,
&plugin);
pdprintf("rate down resampling: src=%i, dst=%i returns %i\n", srcformat.rate, tmpformat.rate, err);
if (err < 0) {
snd_pcm_plugin_free(plugin);
if (err < 0)
return err;
}
err = snd_pcm_plugin_append(plugin);
if (err < 0) {
snd_pcm_plugin_free(plugin);
@ -524,52 +467,6 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug,
src_access = dst_access;
}
/* channels extension */
if (srcformat.channels < dstformat.channels) {
int sv = srcformat.channels;
int dv = dstformat.channels;
int *ttable = kcalloc(dv * sv, sizeof(*ttable), GFP_KERNEL);
if (ttable == NULL)
return -ENOMEM;
#if 0
{
int v;
for (v = 0; v < sv; ++v)
ttable[v * sv + v] = FULL;
}
#else
{
/* Playback is spreaded on all channels */
int vd, vs;
for (vd = 0, vs = 0; vd < dv; ++vd) {
ttable[vd * sv + vs] = FULL;
vs++;
if (vs == sv)
vs = 0;
}
}
#endif
tmpformat.channels = dstformat.channels;
if (snd_pcm_format_linear(dstformat.format))
tmpformat.format = dstformat.format;
err = snd_pcm_plugin_build_route(plug,
&srcformat, &tmpformat,
ttable, &plugin);
kfree(ttable);
pdprintf("channels extension: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err);
if (err < 0) {
snd_pcm_plugin_free(plugin);
return err;
}
err = snd_pcm_plugin_append(plugin);
if (err < 0) {
snd_pcm_plugin_free(plugin);
return err;
}
srcformat = tmpformat;
src_access = dst_access;
}
/* format change */
if (srcformat.format != dstformat.format) {
tmpformat.format = dstformat.format;
@ -598,6 +495,22 @@ int snd_pcm_plug_format_plugins(struct snd_pcm_substream *plug,
src_access = dst_access;
}
/* channels extension */
if (srcformat.channels < dstformat.channels) {
tmpformat.channels = dstformat.channels;
err = snd_pcm_plugin_build_route(plug, &srcformat, &tmpformat, &plugin);
pdprintf("channels extension: src=%i, dst=%i returns %i\n", srcformat.channels, tmpformat.channels, err);
if (err < 0)
return err;
err = snd_pcm_plugin_append(plugin);
if (err < 0) {
snd_pcm_plugin_free(plugin);
return err;
}
srcformat = tmpformat;
src_access = dst_access;
}
/* de-interleave */
if (src_access != dst_access) {
err = snd_pcm_plugin_build_copy(plug,
@ -653,92 +566,6 @@ snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(struct snd_pcm_substream *plu
return count;
}
static int snd_pcm_plug_playback_channels_mask(struct snd_pcm_substream *plug,
unsigned long *client_vmask)
{
struct snd_pcm_plugin *plugin = snd_pcm_plug_last(plug);
if (plugin == NULL) {
return 0;
} else {
int schannels = plugin->dst_format.channels;
DECLARE_BITMAP(bs, schannels);
unsigned long *srcmask;
unsigned long *dstmask = bs;
int err;
bitmap_fill(dstmask, schannels);
while (1) {
err = plugin->src_channels_mask(plugin, dstmask, &srcmask);
if (err < 0)
return err;
dstmask = srcmask;
if (plugin->prev == NULL)
break;
plugin = plugin->prev;
}
bitmap_and(client_vmask, client_vmask, dstmask, plugin->src_format.channels);
return 0;
}
}
static int snd_pcm_plug_playback_disable_useless_channels(struct snd_pcm_substream *plug,
struct snd_pcm_plugin_channel *src_channels)
{
struct snd_pcm_plugin *plugin = snd_pcm_plug_first(plug);
unsigned int nchannels = plugin->src_format.channels;
DECLARE_BITMAP(bs, nchannels);
unsigned long *srcmask = bs;
int err;
unsigned int channel;
for (channel = 0; channel < nchannels; channel++) {
if (src_channels[channel].enabled)
set_bit(channel, srcmask);
else
clear_bit(channel, srcmask);
}
err = snd_pcm_plug_playback_channels_mask(plug, srcmask);
if (err < 0)
return err;
for (channel = 0; channel < nchannels; channel++) {
if (!test_bit(channel, srcmask))
src_channels[channel].enabled = 0;
}
return 0;
}
static int snd_pcm_plug_capture_disable_useless_channels(struct snd_pcm_substream *plug,
struct snd_pcm_plugin_channel *src_channels,
struct snd_pcm_plugin_channel *client_channels)
{
struct snd_pcm_plugin *plugin = snd_pcm_plug_last(plug);
unsigned int nchannels = plugin->dst_format.channels;
DECLARE_BITMAP(bs, nchannels);
unsigned long *dstmask = bs;
unsigned long *srcmask;
int err;
unsigned int channel;
for (channel = 0; channel < nchannels; channel++) {
if (client_channels[channel].enabled)
set_bit(channel, dstmask);
else
clear_bit(channel, dstmask);
}
while (plugin) {
err = plugin->src_channels_mask(plugin, dstmask, &srcmask);
if (err < 0)
return err;
dstmask = srcmask;
plugin = plugin->prev;
}
plugin = snd_pcm_plug_first(plug);
nchannels = plugin->src_format.channels;
for (channel = 0; channel < nchannels; channel++) {
if (!test_bit(channel, dstmask))
src_channels[channel].enabled = 0;
}
return 0;
}
snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *plug, struct snd_pcm_plugin_channel *src_channels, snd_pcm_uframes_t size)
{
struct snd_pcm_plugin *plugin, *next;
@ -746,9 +573,6 @@ snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *plug, st
int err;
snd_pcm_sframes_t frames = size;
if ((err = snd_pcm_plug_playback_disable_useless_channels(plug, src_channels)) < 0)
return err;
plugin = snd_pcm_plug_first(plug);
while (plugin && frames > 0) {
if ((next = plugin->next) != NULL) {
@ -793,10 +617,6 @@ snd_pcm_sframes_t snd_pcm_plug_read_transfer(struct snd_pcm_substream *plug, str
return err;
}
frames = err;
if (!plugin->prev) {
if ((err = snd_pcm_plug_capture_disable_useless_channels(plug, dst_channels, dst_channels_final)) < 0)
return err;
}
} else {
dst_channels = dst_channels_final;
}

26
sound/core/oss/pcm_plugin.h
View File

@ -24,13 +24,6 @@
#ifdef CONFIG_SND_PCM_OSS_PLUGINS
#include <linux/bitmap.h>
static inline unsigned long *bitmap_alloc(unsigned int nbits)
{
return kmalloc(BITS_TO_LONGS(nbits), GFP_KERNEL);
}
#define snd_pcm_plug_stream(plug) ((plug)->stream)
enum snd_pcm_plugin_action {
@ -71,12 +64,6 @@ struct snd_pcm_plugin {
snd_pcm_sframes_t (*client_channels)(struct snd_pcm_plugin *plugin,
snd_pcm_uframes_t frames,
struct snd_pcm_plugin_channel **channels);
int (*src_channels_mask)(struct snd_pcm_plugin *plugin,
unsigned long *dst_vmask,
unsigned long **src_vmask);
int (*dst_channels_mask)(struct snd_pcm_plugin *plugin,
unsigned long *src_vmask,
unsigned long **dst_vmask);
snd_pcm_sframes_t (*transfer)(struct snd_pcm_plugin *plugin,
const struct snd_pcm_plugin_channel *src_channels,
struct snd_pcm_plugin_channel *dst_channels,
@ -92,8 +79,6 @@ struct snd_pcm_plugin {
char *buf;
snd_pcm_uframes_t buf_frames;
struct snd_pcm_plugin_channel *buf_channels;
unsigned long *src_vmask;
unsigned long *dst_vmask;
char extra_data[0];
};
@ -130,7 +115,6 @@ int snd_pcm_plugin_build_rate(struct snd_pcm_substream *handle,
int snd_pcm_plugin_build_route(struct snd_pcm_substream *handle,
struct snd_pcm_plugin_format *src_format,
struct snd_pcm_plugin_format *dst_format,
int *ttable,
struct snd_pcm_plugin **r_plugin);
int snd_pcm_plugin_build_copy(struct snd_pcm_substream *handle,
struct snd_pcm_plugin_format *src_format,
@ -183,16 +167,6 @@ snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream,
void **bufs, snd_pcm_uframes_t frames,
int in_kernel);
#define ROUTE_PLUGIN_RESOLUTION 16
int getput_index(int format);
int copy_index(int format);
int conv_index(int src_format, int dst_format);
void zero_channel(struct snd_pcm_plugin *plugin,
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; }

166
sound/core/oss/plugin_ops.h
View File

@ -362,172 +362,6 @@ put_s16_xx12_0029: as_u32(dst) = (u_int32_t)swab16(sample) ^ 0x80; goto PUT_S16_
}
#endif
#if 0
#ifdef GET32_LABELS
/* src_wid src_endswap unsigned */
static void *get32_labels[4 * 2 * 2] = {
&&get32_xxx1_1000, /* 8h -> 32h */
&&get32_xxx1_9000, /* 8h ^> 32h */
&&get32_xxx1_1000, /* 8s -> 32h */
&&get32_xxx1_9000, /* 8s ^> 32h */
&&get32_xx12_1200, /* 16h -> 32h */
&&get32_xx12_9200, /* 16h ^> 32h */
&&get32_xx12_2100, /* 16s -> 32h */
&&get32_xx12_A100, /* 16s ^> 32h */
&&get32_x123_1230, /* 24h -> 32h */
&&get32_x123_9230, /* 24h ^> 32h */
&&get32_123x_3210, /* 24s -> 32h */
&&get32_123x_B210, /* 24s ^> 32h */
&&get32_1234_1234, /* 32h -> 32h */
&&get32_1234_9234, /* 32h ^> 32h */
&&get32_1234_4321, /* 32s -> 32h */
&&get32_1234_C321, /* 32s ^> 32h */
};
#endif
#ifdef GET32_END
while (0) {
get32_xxx1_1000: sample = (u_int32_t)as_u8(src) << 24; goto GET32_END;
get32_xxx1_9000: sample = (u_int32_t)(as_u8(src) ^ 0x80) << 24; goto GET32_END;
get32_xx12_1200: sample = (u_int32_t)as_u16(src) << 16; goto GET32_END;
get32_xx12_9200: sample = (u_int32_t)(as_u16(src) ^ 0x8000) << 16; goto GET32_END;
get32_xx12_2100: sample = (u_int32_t)swab16(as_u16(src)) << 16; goto GET32_END;
get32_xx12_A100: sample = (u_int32_t)swab16(as_u16(src) ^ 0x80) << 16; goto GET32_END;
get32_x123_1230: sample = as_u32(src) << 8; goto GET32_END;
get32_x123_9230: sample = (as_u32(src) << 8) ^ 0x80000000; goto GET32_END;
get32_123x_3210: sample = swab32(as_u32(src) >> 8); goto GET32_END;
get32_123x_B210: sample = swab32((as_u32(src) >> 8) ^ 0x80); goto GET32_END;
get32_1234_1234: sample = as_u32(src); goto GET32_END;
get32_1234_9234: sample = as_u32(src) ^ 0x80000000; goto GET32_END;
get32_1234_4321: sample = swab32(as_u32(src)); goto GET32_END;
get32_1234_C321: sample = swab32(as_u32(src) ^ 0x80); goto GET32_END;
}
#endif
#endif
#ifdef PUT_U32_LABELS
/* dst_wid dst_endswap unsigned */
static void *put_u32_labels[4 * 2 * 2] = {
&&put_u32_1234_xxx9, /* u32h -> s8h */
&&put_u32_1234_xxx1, /* u32h -> u8h */
&&put_u32_1234_xxx9, /* u32h -> s8s */
&&put_u32_1234_xxx1, /* u32h -> u8s */
&&put_u32_1234_xx92, /* u32h -> s16h */
&&put_u32_1234_xx12, /* u32h -> u16h */
&&put_u32_1234_xx29, /* u32h -> s16s */
&&put_u32_1234_xx21, /* u32h -> u16s */
&&put_u32_1234_x923, /* u32h -> s24h */
&&put_u32_1234_x123, /* u32h -> u24h */
&&put_u32_1234_329x, /* u32h -> s24s */
&&put_u32_1234_321x, /* u32h -> u24s */
&&put_u32_1234_9234, /* u32h -> s32h */
&&put_u32_1234_1234, /* u32h -> u32h */
&&put_u32_1234_4329, /* u32h -> s32s */
&&put_u32_1234_4321, /* u32h -> u32s */
};
#endif
#ifdef PUT_U32_END
while (0) {
put_u32_1234_xxx1: as_u8(dst) = sample >> 24; goto PUT_U32_END;
put_u32_1234_xxx9: as_u8(dst) = (sample >> 24) ^ 0x80; goto PUT_U32_END;
put_u32_1234_xx12: as_u16(dst) = sample >> 16; goto PUT_U32_END;
put_u32_1234_xx92: as_u16(dst) = (sample >> 16) ^ 0x8000; goto PUT_U32_END;
put_u32_1234_xx21: as_u16(dst) = swab16(sample >> 16); goto PUT_U32_END;
put_u32_1234_xx29: as_u16(dst) = swab16(sample >> 16) ^ 0x80; goto PUT_U32_END;
put_u32_1234_x123: as_u32(dst) = sample >> 8; goto PUT_U32_END;
put_u32_1234_x923: as_u32(dst) = (sample >> 8) ^ 0x800000; goto PUT_U32_END;
put_u32_1234_321x: as_u32(dst) = swab32(sample) << 8; goto PUT_U32_END;
put_u32_1234_329x: as_u32(dst) = (swab32(sample) ^ 0x80) << 8; goto PUT_U32_END;
put_u32_1234_1234: as_u32(dst) = sample; goto PUT_U32_END;
put_u32_1234_9234: as_u32(dst) = sample ^ 0x80000000; goto PUT_U32_END;
put_u32_1234_4321: as_u32(dst) = swab32(sample); goto PUT_U32_END;
put_u32_1234_4329: as_u32(dst) = swab32(sample) ^ 0x80; goto PUT_U32_END;
}
#endif
#ifdef GET_U_LABELS
/* width endswap unsigned*/
static void *get_u_labels[4 * 2 * 2] = {
&&get_u_s8, /* s8 -> u8 */
&&get_u_u8, /* u8 -> u8 */
&&get_u_s8, /* s8 -> u8 */
&&get_u_u8, /* u8 -> u8 */
&&get_u_s16h, /* s16h -> u16h */
&&get_u_u16h, /* u16h -> u16h */
&&get_u_s16s, /* s16s -> u16h */
&&get_u_u16s, /* u16s -> u16h */
&&get_u_s24h, /* s24h -> u32h */
&&get_u_u24h, /* u24h -> u32h */
&&get_u_s24s, /* s24s -> u32h */
&&get_u_u24s, /* u24s -> u32h */
&&get_u_s32h, /* s32h -> u32h */
&&get_u_u32h, /* u32h -> u32h */
&&get_u_s32s, /* s32s -> u32h */
&&get_u_u32s, /* u32s -> u32h */
};
#endif
#ifdef GET_U_END
while (0) {
get_u_s8: sample = as_u8(src) ^ 0x80; goto GET_U_END;
get_u_u8: sample = as_u8(src); goto GET_U_END;
get_u_s16h: sample = as_u16(src) ^ 0x8000; goto GET_U_END;
get_u_u16h: sample = as_u16(src); goto GET_U_END;
get_u_s16s: sample = swab16(as_u16(src) ^ 0x80); goto GET_U_END;
get_u_u16s: sample = swab16(as_u16(src)); goto GET_U_END;
get_u_s24h: sample = (as_u32(src) ^ 0x800000); goto GET_U_END;
get_u_u24h: sample = as_u32(src); goto GET_U_END;
get_u_s24s: sample = swab32(as_u32(src) ^ 0x800000); goto GET_U_END;
get_u_u24s: sample = swab32(as_u32(src)); goto GET_U_END;
get_u_s32h: sample = as_u32(src) ^ 0x80000000; goto GET_U_END;
get_u_u32h: sample = as_u32(src); goto GET_U_END;
get_u_s32s: sample = swab32(as_u32(src) ^ 0x80); goto GET_U_END;
get_u_u32s: sample = swab32(as_u32(src)); goto GET_U_END;
}
#endif
#if 0
#ifdef PUT_LABELS
/* width endswap unsigned */
static void *put_labels[4 * 2 * 2] = {
&&put_s8, /* s8 -> s8 */
&&put_u8, /* u8 -> s8 */
&&put_s8, /* s8 -> s8 */
&&put_u8, /* u8 -> s8 */
&&put_s16h, /* s16h -> s16h */
&&put_u16h, /* u16h -> s16h */
&&put_s16s, /* s16s -> s16h */
&&put_u16s, /* u16s -> s16h */
&&put_s24h, /* s24h -> s32h */
&&put_u24h, /* u24h -> s32h */
&&put_s24s, /* s24s -> s32h */
&&put_u24s, /* u24s -> s32h */
&&put_s32h, /* s32h -> s32h */
&&put_u32h, /* u32h -> s32h */
&&put_s32s, /* s32s -> s32h */
&&put_u32s, /* u32s -> s32h */
};
#endif
#ifdef PUT_END
put_s8: as_s8(dst) = sample; goto PUT_END;
put_u8: as_u8(dst) = sample ^ 0x80; goto PUT_END;
put_s16h: as_s16(dst) = sample; goto PUT_END;
put_u16h: as_u16(dst) = sample ^ 0x8000; goto PUT_END;
put_s16s: as_s16(dst) = swab16(sample); goto PUT_END;
put_u16s: as_u16(dst) = swab16(sample ^ 0x80); goto PUT_END;
put_s24h: as_s24(dst) = sample & 0xffffff; goto PUT_END;
put_u24h: as_u24(dst) = sample ^ 0x80000000; goto PUT_END;
put_s24s: as_s24(dst) = swab32(sample & 0xffffff); goto PUT_END;
put_u24s: as_u24(dst) = swab32(sample ^ 0x80); goto PUT_END;
put_s32h: as_s32(dst) = sample; goto PUT_END;
put_u32h: as_u32(dst) = sample ^ 0x80000000; goto PUT_END;
put_s32s: as_s32(dst) = swab32(sample); goto PUT_END;
put_u32s: as_u32(dst) = swab32(sample ^ 0x80); goto PUT_END;
#endif
#endif
#undef as_u8
#undef as_u16
#undef as_u32

80
sound/core/oss/rate.c
View File

@ -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;

488
sound/core/oss/route.c
View File

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