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-rw-r--r--sound/core/oss/pcm_plugin.h250
1 files changed, 250 insertions, 0 deletions
diff --git a/sound/core/oss/pcm_plugin.h b/sound/core/oss/pcm_plugin.h
new file mode 100644
index 000000000000..0f86ce477490
--- /dev/null
+++ b/sound/core/oss/pcm_plugin.h
@@ -0,0 +1,250 @@
+#ifndef __PCM_PLUGIN_H
+#define __PCM_PLUGIN_H
+
+/*
+ * Digital Audio (Plugin interface) abstract layer
+ * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef ATTRIBUTE_UNUSED
+#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+typedef unsigned int bitset_t;
+
+static inline size_t bitset_size(int nbits)
+{
+ return (nbits + sizeof(bitset_t) * 8 - 1) / (sizeof(bitset_t) * 8);
+}
+
+static inline bitset_t *bitset_alloc(int nbits)
+{
+ return kcalloc(bitset_size(nbits), sizeof(bitset_t), GFP_KERNEL);
+}
+
+static inline void bitset_set(bitset_t *bitmap, unsigned int pos)
+{
+ size_t bits = sizeof(*bitmap) * 8;
+ bitmap[pos / bits] |= 1 << (pos % bits);
+}
+
+static inline void bitset_reset(bitset_t *bitmap, unsigned int pos)
+{
+ size_t bits = sizeof(*bitmap) * 8;
+ bitmap[pos / bits] &= ~(1 << (pos % bits));
+}
+
+static inline int bitset_get(bitset_t *bitmap, unsigned int pos)
+{
+ size_t bits = sizeof(*bitmap) * 8;
+ return !!(bitmap[pos / bits] & (1 << (pos % bits)));
+}
+
+static inline void bitset_copy(bitset_t *dst, bitset_t *src, unsigned int nbits)
+{
+ memcpy(dst, src, bitset_size(nbits) * sizeof(bitset_t));
+}
+
+static inline void bitset_and(bitset_t *dst, bitset_t *bs, unsigned int nbits)
+{
+ bitset_t *end = dst + bitset_size(nbits);
+ while (dst < end)
+ *dst++ &= *bs++;
+}
+
+static inline void bitset_or(bitset_t *dst, bitset_t *bs, unsigned int nbits)
+{
+ bitset_t *end = dst + bitset_size(nbits);
+ while (dst < end)
+ *dst++ |= *bs++;
+}
+
+static inline void bitset_zero(bitset_t *dst, unsigned int nbits)
+{
+ bitset_t *end = dst + bitset_size(nbits);
+ while (dst < end)
+ *dst++ = 0;
+}
+
+static inline void bitset_one(bitset_t *dst, unsigned int nbits)
+{
+ bitset_t *end = dst + bitset_size(nbits);
+ while (dst < end)
+ *dst++ = ~(bitset_t)0;
+}
+
+#define snd_pcm_plug_t snd_pcm_substream_t
+#define snd_pcm_plug_stream(plug) ((plug)->stream)
+
+typedef enum {
+ INIT = 0,
+ PREPARE = 1,
+} snd_pcm_plugin_action_t;
+
+typedef struct _snd_pcm_channel_area {
+ void *addr; /* base address of channel samples */
+ unsigned int first; /* offset to first sample in bits */
+ unsigned int step; /* samples distance in bits */
+} snd_pcm_channel_area_t;
+
+typedef struct _snd_pcm_plugin_channel {
+ void *aptr; /* pointer to the allocated area */
+ snd_pcm_channel_area_t area;
+ snd_pcm_uframes_t frames; /* allocated frames */
+ unsigned int enabled:1; /* channel need to be processed */
+ unsigned int wanted:1; /* channel is wanted */
+} snd_pcm_plugin_channel_t;
+
+typedef struct _snd_pcm_plugin_format {
+ int format;
+ unsigned int rate;
+ unsigned int channels;
+} snd_pcm_plugin_format_t;
+
+struct _snd_pcm_plugin {
+ const char *name; /* plug-in name */
+ int stream;
+ snd_pcm_plugin_format_t src_format; /* source format */
+ snd_pcm_plugin_format_t dst_format; /* destination format */
+ int src_width; /* sample width in bits */
+ int dst_width; /* sample width in bits */
+ int access;
+ snd_pcm_sframes_t (*src_frames)(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t dst_frames);
+ snd_pcm_sframes_t (*dst_frames)(snd_pcm_plugin_t *plugin, snd_pcm_uframes_t src_frames);
+ snd_pcm_sframes_t (*client_channels)(snd_pcm_plugin_t *plugin,
+ snd_pcm_uframes_t frames,
+ snd_pcm_plugin_channel_t **channels);
+ int (*src_channels_mask)(snd_pcm_plugin_t *plugin,
+ bitset_t *dst_vmask,
+ bitset_t **src_vmask);
+ int (*dst_channels_mask)(snd_pcm_plugin_t *plugin,
+ bitset_t *src_vmask,
+ bitset_t **dst_vmask);
+ snd_pcm_sframes_t (*transfer)(snd_pcm_plugin_t *plugin,
+ const snd_pcm_plugin_channel_t *src_channels,
+ snd_pcm_plugin_channel_t *dst_channels,
+ snd_pcm_uframes_t frames);
+ int (*action)(snd_pcm_plugin_t *plugin,
+ snd_pcm_plugin_action_t action,
+ unsigned long data);
+ snd_pcm_plugin_t *prev;
+ snd_pcm_plugin_t *next;
+ snd_pcm_plug_t *plug;
+ void *private_data;
+ void (*private_free)(snd_pcm_plugin_t *plugin);
+ char *buf;
+ snd_pcm_uframes_t buf_frames;
+ snd_pcm_plugin_channel_t *buf_channels;
+ bitset_t *src_vmask;
+ bitset_t *dst_vmask;
+ char extra_data[0];
+};
+
+int snd_pcm_plugin_build(snd_pcm_plug_t *handle,
+ const char *name,
+ snd_pcm_plugin_format_t *src_format,
+ snd_pcm_plugin_format_t *dst_format,
+ size_t extra,
+ snd_pcm_plugin_t **ret);
+int snd_pcm_plugin_free(snd_pcm_plugin_t *plugin);
+int snd_pcm_plugin_clear(snd_pcm_plugin_t **first);
+int snd_pcm_plug_alloc(snd_pcm_plug_t *plug, snd_pcm_uframes_t frames);
+snd_pcm_sframes_t snd_pcm_plug_client_size(snd_pcm_plug_t *handle, snd_pcm_uframes_t drv_size);
+snd_pcm_sframes_t snd_pcm_plug_slave_size(snd_pcm_plug_t *handle, snd_pcm_uframes_t clt_size);
+
+#define FULL ROUTE_PLUGIN_RESOLUTION
+#define HALF ROUTE_PLUGIN_RESOLUTION / 2
+typedef int route_ttable_entry_t;
+
+int snd_pcm_plugin_build_io(snd_pcm_plug_t *handle,
+ snd_pcm_hw_params_t *params,
+ snd_pcm_plugin_t **r_plugin);
+int snd_pcm_plugin_build_linear(snd_pcm_plug_t *handle,
+ snd_pcm_plugin_format_t *src_format,
+ snd_pcm_plugin_format_t *dst_format,
+ snd_pcm_plugin_t **r_plugin);
+int snd_pcm_plugin_build_mulaw(snd_pcm_plug_t *handle,
+ snd_pcm_plugin_format_t *src_format,
+ snd_pcm_plugin_format_t *dst_format,
+ snd_pcm_plugin_t **r_plugin);
+int snd_pcm_plugin_build_rate(snd_pcm_plug_t *handle,
+ snd_pcm_plugin_format_t *src_format,
+ snd_pcm_plugin_format_t *dst_format,
+ snd_pcm_plugin_t **r_plugin);
+int snd_pcm_plugin_build_route(snd_pcm_plug_t *handle,
+ snd_pcm_plugin_format_t *src_format,
+ snd_pcm_plugin_format_t *dst_format,
+ route_ttable_entry_t *ttable,
+ snd_pcm_plugin_t **r_plugin);
+int snd_pcm_plugin_build_copy(snd_pcm_plug_t *handle,
+ snd_pcm_plugin_format_t *src_format,
+ snd_pcm_plugin_format_t *dst_format,
+ snd_pcm_plugin_t **r_plugin);
+
+int snd_pcm_plug_format_plugins(snd_pcm_plug_t *substream,
+ snd_pcm_hw_params_t *params,
+ snd_pcm_hw_params_t *slave_params);
+
+int snd_pcm_plug_slave_format(int format, snd_mask_t *format_mask);
+
+int snd_pcm_plugin_append(snd_pcm_plugin_t *plugin);
+
+snd_pcm_sframes_t snd_pcm_plug_write_transfer(snd_pcm_plug_t *handle, snd_pcm_plugin_channel_t *src_channels, snd_pcm_uframes_t size);
+snd_pcm_sframes_t snd_pcm_plug_read_transfer(snd_pcm_plug_t *handle, snd_pcm_plugin_channel_t *dst_channels_final, snd_pcm_uframes_t size);
+
+snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(snd_pcm_plug_t *handle,
+ char *buf, snd_pcm_uframes_t count,
+ snd_pcm_plugin_channel_t **channels);
+
+snd_pcm_sframes_t snd_pcm_plugin_client_channels(snd_pcm_plugin_t *plugin,
+ snd_pcm_uframes_t frames,
+ snd_pcm_plugin_channel_t **channels);
+
+int snd_pcm_area_silence(const snd_pcm_channel_area_t *dst_channel, size_t dst_offset,
+ size_t samples, int format);
+int snd_pcm_area_copy(const snd_pcm_channel_area_t *src_channel, size_t src_offset,
+ const snd_pcm_channel_area_t *dst_channel, size_t dst_offset,
+ size_t samples, int format);
+
+void *snd_pcm_plug_buf_alloc(snd_pcm_plug_t *plug, snd_pcm_uframes_t size);
+void snd_pcm_plug_buf_unlock(snd_pcm_plug_t *plug, void *ptr);
+snd_pcm_sframes_t snd_pcm_oss_write3(snd_pcm_substream_t *substream, const char *ptr, snd_pcm_uframes_t size, int in_kernel);
+snd_pcm_sframes_t snd_pcm_oss_read3(snd_pcm_substream_t *substream, char *ptr, snd_pcm_uframes_t size, int in_kernel);
+snd_pcm_sframes_t snd_pcm_oss_writev3(snd_pcm_substream_t *substream, void **bufs, snd_pcm_uframes_t frames, int in_kernel);
+snd_pcm_sframes_t snd_pcm_oss_readv3(snd_pcm_substream_t *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(snd_pcm_plugin_t *plugin,
+ const snd_pcm_plugin_channel_t *dst_channel,
+ size_t samples);
+
+#ifdef PLUGIN_DEBUG
+#define pdprintf( fmt, args... ) printk( "plugin: " fmt, ##args)
+#else
+#define pdprintf( fmt, args... )
+#endif
+
+#endif /* __PCM_PLUGIN_H */
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 06:57:00 +0000