mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-11-10 13:30:01 -05:00
Abramo Bagnara <abramo@alsa-project.org>
Sat, 11 Dec 1999 08:45:24 +0100 - changed lowlevel drivers to use pcm_misc.c functions - fixed some bugs in pcm_plugin_build - the plugin code is shared between alsa-lib and alsa-driver
This commit is contained in:
Jaroslav Kysela
parent
0f0ce09509
commit
20ebae20a7
13 changed files with 596 additions and 508 deletions
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@ -892,9 +892,12 @@ int snd_pcm_plugin_build_adpcm(snd_pcm_format_t *src_format,
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return -EINVAL;
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*r_plugin = NULL;
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if (src_format->interleave != dst_format->interleave ||
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src_format->voices != dst_format->voices ||
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src_format->rate != dst_format->rate)
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if (src_format->interleave != dst_format->interleave &&
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src_format->voices > 1)
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return -EINVAL;
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if (src_format->rate != dst_format->rate)
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return -EINVAL;
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if (src_format->voices != dst_format->voices)
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return -EINVAL;
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if (dst_format->format == SND_PCM_SFMT_IMA_ADPCM) {
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@ -426,7 +426,8 @@ int snd_pcm_plugin_build_alaw(snd_pcm_format_t *src_format,
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return -EINVAL;
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*r_plugin = NULL;
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if (src_format->interleave != dst_format->interleave)
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if (src_format->interleave != dst_format->interleave &&
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src_format->voices > 1)
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return -EINVAL;
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if (src_format->rate != dst_format->rate)
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return -EINVAL;
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@ -18,7 +18,11 @@
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifdef __KERNEL__
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#include "../../include/driver.h"
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#include "../../include/pcm_plugin.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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@ -27,6 +31,7 @@
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#include <endian.h>
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#include <byteswap.h>
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#include "../pcm_local.h"
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#endif
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/*
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* Basic interleave / non-interleave conversion plugin
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@ -188,6 +193,8 @@ int snd_pcm_plugin_build_interleave(snd_pcm_format_t *src_format,
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if (!r_plugin)
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return -EINVAL;
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*r_plugin = NULL;
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if (src_format->interleave && !dst_format->interleave) {
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cmd = _INTERLEAVE_NON;
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} else if (!src_format->interleave && dst_format->interleave) {
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@ -236,3 +243,7 @@ int snd_pcm_plugin_build_interleave(snd_pcm_format_t *src_format,
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*r_plugin = plugin;
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return 0;
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}
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#ifdef __KERNEL__
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EXPORT_SYMBOL(snd_pcm_plugin_build_interleave);
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#endif
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@ -18,7 +18,12 @@
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifdef __KERNEL__
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#include "../../include/driver.h"
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#include "../../include/pcm.h"
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#include "../../include/pcm_plugin.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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@ -27,6 +32,7 @@
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#include <endian.h>
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#include <byteswap.h>
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#include "../pcm_local.h"
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#endif
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/*
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* Basic linear conversion plugin
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@ -48,14 +54,15 @@ typedef enum {
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} combination_t;
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typedef enum {
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NONE,
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SOURCE,
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DESTINATION,
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BOTH,
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SIGN_NONE,
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SIGN_SOURCE,
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SIGN_DESTINATION,
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SIGN_BOTH,
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NONE = 0,
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SOURCE = 1,
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DESTINATION = 2,
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BOTH = 3,
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SIGN = 4,
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SIGN_NONE = 4,
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SIGN_SOURCE = 5,
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SIGN_DESTINATION = 6,
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SIGN_BOTH = 7,
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} endian_t;
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struct linear_private_data {
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@ -128,8 +135,8 @@ static void linear_conv_sign_16bit_8bit_swap(unsigned short *src_ptr,
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}
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static ssize_t linear_transfer(snd_pcm_plugin_t *plugin,
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char *src_ptr, size_t src_size,
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char *dst_ptr, size_t dst_size)
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char *src_ptr, size_t src_size,
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char *dst_ptr, size_t dst_size)
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{
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struct linear_private_data *data;
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@ -170,13 +177,13 @@ static ssize_t linear_transfer(snd_pcm_plugin_t *plugin,
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case NONE:
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linear_conv_16bit_8bit((short *)src_ptr, dst_ptr, src_size);
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break;
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case DESTINATION:
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case SOURCE:
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linear_conv_16bit_8bit_swap((short *)src_ptr, dst_ptr, src_size);
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break;
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case SIGN_NONE:
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linear_conv_sign_16bit_8bit((short *)src_ptr, dst_ptr, src_size);
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break;
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case SIGN_DESTINATION:
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case SIGN_SOURCE:
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linear_conv_sign_16bit_8bit_swap((short *)src_ptr, dst_ptr, src_size);
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break;
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default:
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@ -248,68 +255,6 @@ static ssize_t linear_dst_size(snd_pcm_plugin_t *plugin, size_t size)
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}
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}
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static int linear_wide(int format)
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{
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if (format >= 0 && format <= 1)
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return 8;
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if (format >= 2 && format <= 5)
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return 16;
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if (format >= 6 && format <= 9)
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return 24;
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if (format >= 10 && format <= 13)
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return 32;
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return -1;
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}
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static int linear_endian(int format)
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{
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switch (format) {
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case SND_PCM_SFMT_S8:
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case SND_PCM_SFMT_U8:
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return 0;
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case SND_PCM_SFMT_S16_LE:
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case SND_PCM_SFMT_U16_LE:
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case SND_PCM_SFMT_S24_LE:
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case SND_PCM_SFMT_U24_LE:
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case SND_PCM_SFMT_S32_LE:
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case SND_PCM_SFMT_U32_LE:
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return __LITTLE_ENDIAN;
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case SND_PCM_SFMT_S16_BE:
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case SND_PCM_SFMT_U16_BE:
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case SND_PCM_SFMT_S24_BE:
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case SND_PCM_SFMT_U24_BE:
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case SND_PCM_SFMT_S32_BE:
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case SND_PCM_SFMT_U32_BE:
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return __BIG_ENDIAN;
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default:
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return -1;
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}
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}
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static int linear_sign(int format)
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{
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switch (format) {
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case SND_PCM_SFMT_S8:
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case SND_PCM_SFMT_S16_LE:
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case SND_PCM_SFMT_S16_BE:
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case SND_PCM_SFMT_S24_LE:
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case SND_PCM_SFMT_S24_BE:
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case SND_PCM_SFMT_S32_LE:
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case SND_PCM_SFMT_S32_BE:
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return 1;
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case SND_PCM_SFMT_U8:
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case SND_PCM_SFMT_U16_LE:
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case SND_PCM_SFMT_U24_LE:
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case SND_PCM_SFMT_U32_LE:
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case SND_PCM_SFMT_U16_BE:
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case SND_PCM_SFMT_U24_BE:
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case SND_PCM_SFMT_U32_BE:
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return 0;
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default:
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return -1;
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}
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}
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int snd_pcm_plugin_build_linear(snd_pcm_format_t *src_format,
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snd_pcm_format_t *dst_format,
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snd_pcm_plugin_t **r_plugin)
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@ -317,40 +262,40 @@ int snd_pcm_plugin_build_linear(snd_pcm_format_t *src_format,
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struct linear_private_data *data;
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snd_pcm_plugin_t *plugin;
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combination_t cmd;
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int wide1, wide2, endian1, endian2, sign1, sign2;
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int width1, width2, endian1, endian2, sign1, sign2;
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if (!r_plugin)
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return -EINVAL;
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*r_plugin = NULL;
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if (src_format->interleave != dst_format->interleave)
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if (src_format->interleave != dst_format->interleave &&
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src_format->voices > 1)
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return -EINVAL;
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if (src_format->rate != dst_format->rate)
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return -EINVAL;
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if (src_format->voices != dst_format->voices)
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return -EINVAL;
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wide1 = linear_wide(src_format->format);
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endian1 = linear_endian(src_format->format);
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sign1 = linear_sign(src_format->format);
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wide2 = linear_wide(dst_format->format);
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endian2 = linear_endian(dst_format->format);
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sign2 = linear_sign(dst_format->format);
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if (wide1 < 0 || wide2 < 0 || endian1 < 0 || endian2 < 0 || sign1 < 0 || sign2 < 0)
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if (!(snd_pcm_format_linear(src_format->format) &&
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snd_pcm_format_linear(dst_format->format)))
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return -EINVAL;
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width1 = snd_pcm_format_width(src_format->format);
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sign1 = snd_pcm_format_signed(src_format->format);
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width2 = snd_pcm_format_width(dst_format->format);
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sign2 = snd_pcm_format_signed(dst_format->format);
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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endian1 = endian1 == __BIG_ENDIAN ? 1 : 0;
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endian2 = endian2 == __BIG_ENDIAN ? 1 : 0;
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endian1 = snd_pcm_format_little_endian(src_format->format);
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endian2 = snd_pcm_format_little_endian(dst_format->format);
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#elif __BYTE_ORDER == __BIG_ENDIAN
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endian1 = endian1 == __LITTLE_ENDIAN ? 1 : 0;
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endian2 = endian2 == __LITTLE_ENDIAN ? 1 : 0;
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endian1 = snd_pcm_format_big_endian(src_format->format);
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endian2 = snd_pcm_format_big_endian(dst_format->format);
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#else
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#error "Unsupported endian..."
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#endif
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cmd = _8BIT_16BIT;
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switch (wide1) {
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switch (width1) {
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case 8:
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switch (wide2) {
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switch (width2) {
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case 16: cmd = _8BIT_16BIT; break;
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case 24: cmd = _8BIT_24BIT; break;
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case 32: cmd = _8BIT_32BIT; break;
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@ -358,7 +303,7 @@ int snd_pcm_plugin_build_linear(snd_pcm_format_t *src_format,
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}
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break;
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case 16:
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switch (wide2) {
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switch (width2) {
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case 8: cmd = _16BIT_8BIT; break;
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case 24: cmd = _16BIT_24BIT; break;
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case 32: cmd = _16BIT_32BIT; break;
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@ -366,7 +311,7 @@ int snd_pcm_plugin_build_linear(snd_pcm_format_t *src_format,
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}
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break;
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case 24:
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switch (wide2) {
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switch (width2) {
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case 8: cmd = _24BIT_8BIT; break;
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case 16: cmd = _24BIT_16BIT; break;
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case 32: cmd = _24BIT_32BIT; break;
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@ -374,7 +319,7 @@ int snd_pcm_plugin_build_linear(snd_pcm_format_t *src_format,
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}
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break;
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case 32:
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switch (wide2) {
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switch (width2) {
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case 8: cmd = _32BIT_8BIT; break;
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case 16: cmd = _32BIT_16BIT; break;
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case 24: cmd = _32BIT_24BIT; break;
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@ -390,20 +335,20 @@ int snd_pcm_plugin_build_linear(snd_pcm_format_t *src_format,
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return -ENOMEM;
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data = (struct linear_private_data *)snd_pcm_plugin_extra_data(plugin);
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data->cmd = cmd;
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if (!endian1 && !endian2) {
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data->endian = NONE;
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} else if (endian1 && !endian2) {
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data->endian = SOURCE;
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} else if (!endian1 && endian2) {
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data->endian = DESTINATION;
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} else {
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data->endian = BOTH;
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}
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data->endian = NONE;
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if (endian1 == 0)
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data->endian |= SOURCE;
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if (endian2 == 0)
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data->endian |= DESTINATION;
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if (sign1 != sign2)
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data->endian += 4;
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data->endian |= SIGN;
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plugin->transfer = linear_transfer;
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plugin->src_size = linear_src_size;
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plugin->dst_size = linear_dst_size;
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*r_plugin = plugin;
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return 0;
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}
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#ifdef __KERNEL__
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EXPORT_SYMBOL(snd_pcm_plugin_build_linear);
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#endif
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@ -21,6 +21,11 @@
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*
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*/
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#ifdef __KERNEL__
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#include "../../include/driver.h"
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#include "../../include/pcm_plugin.h"
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#define bswap_16(x) __swab16((x))
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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@ -29,6 +34,7 @@
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#include <endian.h>
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#include <byteswap.h>
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#include "../pcm_local.h"
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#endif
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#define SIGN_BIT (0x80) /* Sign bit for a u-law byte. */
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#define QUANT_MASK (0xf) /* Quantization field mask. */
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@ -241,8 +247,8 @@ static void mulaw_conv_mulaw_swap_u16bit(unsigned char *src_ptr, unsigned short
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}
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static ssize_t mulaw_transfer(snd_pcm_plugin_t *plugin,
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char *src_ptr, size_t src_size,
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char *dst_ptr, size_t dst_size)
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char *src_ptr, size_t src_size,
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char *dst_ptr, size_t dst_size)
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{
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struct mulaw_private_data *data;
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@ -436,7 +442,8 @@ int snd_pcm_plugin_build_mulaw(snd_pcm_format_t *src_format,
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return -EINVAL;
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*r_plugin = NULL;
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if (src_format->interleave != dst_format->interleave)
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if (src_format->interleave != dst_format->interleave &&
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src_format->voices > 1)
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return -EINVAL;
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if (src_format->rate != dst_format->rate)
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return -EINVAL;
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@ -480,3 +487,7 @@ int snd_pcm_plugin_build_mulaw(snd_pcm_format_t *src_format,
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*r_plugin = plugin;
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return 0;
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}
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#ifdef __KERNEL__
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EXPORT_SYMBOL(snd_pcm_plugin_build_mulaw);
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#endif
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@ -19,6 +19,10 @@
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*
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*/
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#ifdef __KERNEL__
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#include "../../include/driver.h"
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#include "../../include/pcm_plugin.h"
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#else
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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@ -27,6 +31,7 @@
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#include <endian.h>
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#include <byteswap.h>
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#include "../pcm_local.h"
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#endif
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#define SHIFT 11
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#define BITS (1<<SHIFT)
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@ -51,9 +56,9 @@ struct rate_private_data {
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ssize_t old_src_size, old_dst_size;
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};
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static void mix16_expand(struct rate_private_data *data, int voices,
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signed short *src_ptr, int src_size,
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signed short *dst_ptr, int dst_size)
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static void resample16_expand(struct rate_private_data *data, int voices,
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signed short *src_ptr, int src_size,
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signed short *dst_ptr, int dst_size)
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{
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unsigned int pos;
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signed int val;
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@ -97,9 +102,9 @@ static void mix16_expand(struct rate_private_data *data, int voices,
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}
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}
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static void mix16_shrink(struct rate_private_data *data, int voices,
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signed short *src_ptr, int src_size,
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signed short *dst_ptr, int dst_size)
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static void resample16_shrink(struct rate_private_data *data, int voices,
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signed short *src_ptr, int src_size,
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signed short *dst_ptr, int dst_size)
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{
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unsigned int pos;
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signed int val;
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@ -140,9 +145,9 @@ static void mix16_shrink(struct rate_private_data *data, int voices,
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}
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}
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static void mix8_expand(struct rate_private_data *data, int voices,
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unsigned char *src_ptr, int src_size,
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unsigned char *dst_ptr, int dst_size)
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static void resample8_expand(struct rate_private_data *data, int voices,
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unsigned char *src_ptr, int src_size,
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unsigned char *dst_ptr, int dst_size)
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{
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unsigned int pos;
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signed int val;
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@ -186,9 +191,9 @@ static void mix8_expand(struct rate_private_data *data, int voices,
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}
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}
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||||
|
||||
static void mix8_shrink(struct rate_private_data *data, int voices,
|
||||
unsigned char *src_ptr, int src_size,
|
||||
unsigned char *dst_ptr, int dst_size)
|
||||
static void resample8_shrink(struct rate_private_data *data, int voices,
|
||||
unsigned char *src_ptr, int src_size,
|
||||
unsigned char *dst_ptr, int dst_size)
|
||||
{
|
||||
unsigned int pos;
|
||||
signed int val;
|
||||
|
|
@ -245,21 +250,21 @@ static ssize_t rate_transfer(snd_pcm_plugin_t *plugin,
|
|||
return -EINVAL;
|
||||
if (data->sample_size == 2) {
|
||||
if (data->src_rate < data->dst_rate) {
|
||||
mix16_expand(data, data->src_voices,
|
||||
resample16_expand(data, data->src_voices,
|
||||
(signed short *)src_ptr, src_size / (data->src_voices * 2),
|
||||
(signed short *)dst_ptr, dst_size / (data->dst_voices * 2));
|
||||
} else {
|
||||
mix16_shrink(data, data->src_voices,
|
||||
resample16_shrink(data, data->src_voices,
|
||||
(signed short *)src_ptr, src_size / (data->src_voices * 2),
|
||||
(signed short *)dst_ptr, dst_size / (data->dst_voices * 2));
|
||||
}
|
||||
} else {
|
||||
if (data->src_rate < data->dst_rate) {
|
||||
mix8_expand(data, data->src_voices,
|
||||
resample8_expand(data, data->src_voices,
|
||||
src_ptr, src_size / data->src_voices,
|
||||
dst_ptr, dst_size / data->dst_voices);
|
||||
} else {
|
||||
mix8_shrink(data, data->src_voices,
|
||||
resample8_shrink(data, data->src_voices,
|
||||
src_ptr, src_size / data->src_voices,
|
||||
dst_ptr, dst_size / data->dst_voices);
|
||||
}
|
||||
|
|
@ -365,7 +370,8 @@ int snd_pcm_plugin_build_rate(snd_pcm_format_t *src_format,
|
|||
return -EINVAL;
|
||||
*r_plugin = NULL;
|
||||
|
||||
if (src_format->interleave != dst_format->interleave)
|
||||
if (src_format->interleave != dst_format->interleave &&
|
||||
src_format->voices > 1)
|
||||
return -EINVAL;
|
||||
if (src_format->format != dst_format->format)
|
||||
return -EINVAL;
|
||||
|
|
@ -410,3 +416,7 @@ int snd_pcm_plugin_build_rate(snd_pcm_format_t *src_format,
|
|||
*r_plugin = plugin;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef __KERNEL__
|
||||
EXPORT_SYMBOL(snd_pcm_plugin_build_rate);
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -19,6 +19,10 @@
|
|||
*
|
||||
*/
|
||||
|
||||
#ifdef __KERNEL__
|
||||
#include "../../include/driver.h"
|
||||
#include "../../include/pcm_plugin.h"
|
||||
#else
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
|
@ -27,6 +31,7 @@
|
|||
#include <endian.h>
|
||||
#include <byteswap.h>
|
||||
#include "../pcm_local.h"
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Basic voices conversion plugin
|
||||
|
|
@ -59,7 +64,6 @@ static void merge_8bit_unsigned(unsigned char *src_ptr,
|
|||
unsigned char *dst_ptr,
|
||||
int size)
|
||||
{
|
||||
printf("unsigned!!\n");
|
||||
while (size-- > 0) {
|
||||
*dst_ptr++ = ((int)*src_ptr + (int)*(src_ptr + 1)) / 2;
|
||||
src_ptr += 2;
|
||||
|
|
@ -170,7 +174,8 @@ int snd_pcm_plugin_build_voices(snd_pcm_format_t *src_format,
|
|||
return -EINVAL;
|
||||
*r_plugin = NULL;
|
||||
|
||||
if (src_format->interleave != dst_format->interleave)
|
||||
if (src_format->interleave != dst_format->interleave &&
|
||||
src_format->voices > 1)
|
||||
return -EINVAL;
|
||||
if (!dst_format->interleave)
|
||||
return -EINVAL;
|
||||
|
|
@ -202,3 +207,7 @@ int snd_pcm_plugin_build_voices(snd_pcm_format_t *src_format,
|
|||
*r_plugin = plugin;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef __KERNEL__
|
||||
EXPORT_SYMBOL(snd_pcm_plugin_build_voices);
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue