mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-11-02 09:01:48 -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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@ -162,65 +162,6 @@ snd_pcm_plugin_t *snd_pcm_plugin_last(snd_pcm_t *pcm, int channel)
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return pcm->plugin_last[channel];
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}
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ssize_t snd_pcm_plugin_transfer_size(snd_pcm_t *pcm, int channel, size_t drv_size)
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{
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snd_pcm_plugin_t *plugin, *plugin_prev, *plugin_next;
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if (!pcm || channel < 0 || channel > 1)
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return -EINVAL;
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if (drv_size == 0)
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return 0;
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if (drv_size < 0)
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return -EINVAL;
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if (channel == SND_PCM_CHANNEL_PLAYBACK) {
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plugin = snd_pcm_plugin_last(pcm, channel);
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while (plugin) {
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plugin_prev = plugin->prev;
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if (plugin->src_size)
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drv_size = plugin->src_size(plugin, drv_size);
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plugin = plugin_prev;
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}
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} else if (channel == SND_PCM_CHANNEL_CAPTURE) {
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plugin = snd_pcm_plugin_first(pcm, channel);
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while (plugin) {
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plugin_next = plugin->next;
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if (plugin->dst_size)
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drv_size = plugin->dst_size(plugin, drv_size);
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plugin = plugin_next;
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}
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}
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return drv_size;
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}
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ssize_t snd_pcm_plugin_hardware_size(snd_pcm_t *pcm, int channel, size_t trf_size)
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{
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snd_pcm_plugin_t *plugin, *plugin_prev, *plugin_next;
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if (!pcm || channel < 0 || channel > 1)
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return -EINVAL;
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if (trf_size == 0)
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return 0;
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if (trf_size < 0)
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return -EINVAL;
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if (channel == SND_PCM_CHANNEL_PLAYBACK) {
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plugin = snd_pcm_plugin_first(pcm, channel);
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while (plugin) {
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plugin_next = plugin->next;
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if (plugin->dst_size)
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trf_size = plugin->dst_size(plugin, trf_size);
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plugin = plugin_next;
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}
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} else if (channel == SND_PCM_CHANNEL_CAPTURE) {
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plugin = snd_pcm_plugin_last(pcm, channel);
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while (plugin) {
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plugin_prev = plugin->prev;
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if (plugin->src_size)
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trf_size = plugin->src_size(plugin, trf_size);
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plugin = plugin_prev;
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}
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}
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return trf_size;
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}
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double snd_pcm_plugin_transfer_ratio(snd_pcm_t *pcm, int channel)
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{
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@ -246,23 +187,13 @@ double snd_pcm_plugin_hardware_ratio(snd_pcm_t *pcm, int channel)
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*
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*/
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static unsigned int snd_pcm_plugin_formats(snd_pcm_t *pcm, unsigned int formats)
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{
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formats |= SND_PCM_FMT_MU_LAW | SND_PCM_FMT_A_LAW | SND_PCM_FMT_IMA_ADPCM;
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if (formats & (SND_PCM_FMT_U8|SND_PCM_FMT_S8|
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SND_PCM_FMT_U16_LE|SND_PCM_FMT_S16_LE))
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formats |= SND_PCM_FMT_U8|SND_PCM_FMT_S8|
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SND_PCM_FMT_U16_LE|SND_PCM_FMT_S16_LE;
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return formats;
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}
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int snd_pcm_plugin_info(snd_pcm_t *pcm, snd_pcm_channel_info_t *info)
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{
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int err;
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if ((err = snd_pcm_channel_info(pcm, info)) < 0)
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return err;
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info->formats = snd_pcm_plugin_formats(pcm, info->formats);
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info->formats = snd_pcm_plugin_formats(info->formats);
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info->min_rate = 4000;
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info->max_rate = 192000;
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info->rates = SND_PCM_RATE_8000_48000;
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@ -285,28 +216,16 @@ static int snd_pcm_plugin_action(snd_pcm_t *pcm, int channel, int action)
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return 0;
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}
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#if 0
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#define PLUGIN_DEBUG
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#define pdprintf( args... ) printf( "plugin: " ##args)
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#else
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#define pdprintf( args... ) { ; }
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#endif
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int snd_pcm_plugin_params(snd_pcm_t *pcm, snd_pcm_channel_params_t *params)
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{
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snd_pcm_channel_params_t hwparams;
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snd_pcm_channel_params_t srcparams, tmpparams;
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snd_pcm_channel_params_t *dstparams;
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snd_pcm_channel_info_t hwinfo;
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snd_pcm_plugin_t *plugin;
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int err;
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if (!pcm || !params || params->channel < 0 || params->channel > 1)
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return -EINVAL;
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memcpy(&hwparams, params, sizeof(hwparams));
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pdprintf("params begin\n");
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/*
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* try to decide, if a conversion is required
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*/
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@ -317,302 +236,16 @@ int snd_pcm_plugin_params(snd_pcm_t *pcm, snd_pcm_channel_params_t *params)
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snd_pcm_plugin_clear(pcm, params->channel);
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return err;
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}
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if ((hwinfo.formats & (1 << params->format.format)) == 0) {
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if ((snd_pcm_plugin_formats(pcm, hwinfo.formats) & (1 << params->format.format)) == 0)
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return -EINVAL;
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switch (params->format.format) {
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case SND_PCM_SFMT_U8:
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if (hwinfo.formats & SND_PCM_FMT_S8) {
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hwparams.format.format = SND_PCM_SFMT_S8;
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} else if (hwinfo.formats & SND_PCM_FMT_U16_LE) {
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hwparams.format.format = SND_PCM_SFMT_U16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_S16_LE) {
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hwparams.format.format = SND_PCM_SFMT_S16_LE;
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} else {
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return -EINVAL;
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}
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break;
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case SND_PCM_SFMT_S8:
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if (hwinfo.formats & SND_PCM_FMT_U8) {
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hwparams.format.format = SND_PCM_SFMT_U8;
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} else if (hwinfo.formats & SND_PCM_FMT_S16_LE) {
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hwparams.format.format = SND_PCM_SFMT_S16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_U16_LE) {
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hwparams.format.format = SND_PCM_SFMT_U16_LE;
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} else {
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return -EINVAL;
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}
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break;
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case SND_PCM_SFMT_S16_LE:
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if (hwinfo.formats & SND_PCM_FMT_U16_LE) {
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hwparams.format.format = SND_PCM_SFMT_U16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_S8) {
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hwparams.format.format = SND_PCM_SFMT_S8;
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} else if (hwinfo.formats & SND_PCM_FMT_U8) {
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hwparams.format.format = SND_PCM_SFMT_U8;
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} else {
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return -EINVAL;
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}
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break;
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case SND_PCM_SFMT_U16_LE:
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if (hwinfo.formats & SND_PCM_FMT_S16_LE) {
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hwparams.format.format = SND_PCM_SFMT_S16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_U8) {
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hwparams.format.format = SND_PCM_SFMT_U8;
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} else if (hwinfo.formats & SND_PCM_FMT_S8) {
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hwparams.format.format = SND_PCM_SFMT_S8;
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} else {
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return -EINVAL;
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}
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break;
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case SND_PCM_SFMT_MU_LAW:
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if (hwinfo.formats & SND_PCM_FMT_S16_LE) {
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hwparams.format.format = SND_PCM_SFMT_S16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_U16_LE) {
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hwparams.format.format = SND_PCM_SFMT_U16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_S8) {
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hwparams.format.format = SND_PCM_SFMT_S8;
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} else if (hwinfo.formats & SND_PCM_FMT_U8) {
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hwparams.format.format = SND_PCM_SFMT_U8;
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} else {
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return -EINVAL;
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}
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break;
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case SND_PCM_SFMT_A_LAW:
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if (hwinfo.formats & SND_PCM_FMT_S16_LE) {
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hwparams.format.format = SND_PCM_SFMT_S16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_U16_LE) {
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hwparams.format.format = SND_PCM_SFMT_U16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_S8) {
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hwparams.format.format = SND_PCM_SFMT_S8;
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} else if (hwinfo.formats & SND_PCM_FMT_U8) {
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hwparams.format.format = SND_PCM_SFMT_U8;
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} else {
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return -EINVAL;
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}
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case SND_PCM_SFMT_IMA_ADPCM:
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if (hwinfo.formats & SND_PCM_FMT_S16_LE) {
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hwparams.format.format = SND_PCM_SFMT_S16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_U16_LE) {
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hwparams.format.format = SND_PCM_SFMT_U16_LE;
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} else if (hwinfo.formats & SND_PCM_FMT_S8) {
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hwparams.format.format = SND_PCM_SFMT_S8;
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} else if (hwinfo.formats & SND_PCM_FMT_U8) {
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hwparams.format.format = SND_PCM_SFMT_U8;
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} else {
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return -EINVAL;
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}
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break;
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default:
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return -EINVAL;
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}
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}
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/* voices */
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if (params->format.voices < hwinfo.min_voices ||
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params->format.voices > hwinfo.max_voices) {
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int dst_voices = params->format.voices < hwinfo.min_voices ?
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hwinfo.min_voices : hwinfo.max_voices;
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if ((params->format.rate < hwinfo.min_rate ||
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params->format.rate > hwinfo.max_rate) &&
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dst_voices > 2)
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dst_voices = 2;
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hwparams.format.voices = dst_voices;
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pdprintf("params voice correction: dst_voices=%i\n", dst_voices);
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}
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if ((err = snd_pcm_plugin_hwparams(params, &hwinfo, &hwparams)) < 0)
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return err;
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/* rate */
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if (params->format.rate < hwinfo.min_rate ||
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params->format.rate > hwinfo.max_rate) {
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int dst_rate = params->format.rate < hwinfo.min_rate ?
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hwinfo.min_rate : hwinfo.max_rate;
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hwparams.format.rate = dst_rate;
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pdprintf("params rate correction: dst_rate=%i\n", dst_rate);
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}
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/* interleave */
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hwparams.format.interleave = params->format.interleave;
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if (!(hwinfo.flags & SND_PCM_CHNINFO_INTERLEAVE))
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hwparams.format.interleave = 0;
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if (!(hwinfo.flags & SND_PCM_CHNINFO_NONINTERLEAVE))
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hwparams.format.interleave = 1;
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/*
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* add necessary plugins
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*/
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snd_pcm_plugin_clear(pcm, params->channel);
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if (params->channel == SND_PCM_CHANNEL_PLAYBACK) {
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memcpy(&srcparams, params, sizeof(srcparams));
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memcpy(&tmpparams, params, sizeof(tmpparams));
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dstparams = &hwparams;
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} else {
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memcpy(&srcparams, &hwparams, sizeof(srcparams));
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memcpy(&tmpparams, &hwparams, sizeof(tmpparams));
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dstparams = params;
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}
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/* Convert to interleaved format if needed */
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if (!srcparams.format.interleave &&
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(srcparams.format.voices != dstparams->format.voices ||
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(srcparams.format.rate != dstparams->format.rate &&
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srcparams.format.voices > 1))) {
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tmpparams.format.interleave = 1;
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pdprintf("params interleave plugin: src=%i, dst=%i\n", srcparams.format.interleave, tmpparams.format.interleave);
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err = snd_pcm_plugin_build_interleave(&srcparams.format,
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&tmpparams.format,
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&plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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err = snd_pcm_plugin_append(pcm, params->channel, plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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srcparams.format.interleave = 1;
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/* Avoid useless interleave revert */
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if (params->channel == SND_PCM_CHANNEL_PLAYBACK &&
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(hwinfo.flags & SND_PCM_CHNINFO_INTERLEAVE))
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dstparams->format.interleave = 1;
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}
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/* voices reduction */
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if (srcparams.format.voices > dstparams->format.voices) {
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tmpparams.format.voices = dstparams->format.voices;
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pdprintf("params voices reduction: src=%i, dst=%i\n", srcparams.format.voices, tmpparams.format.voices);
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err = snd_pcm_plugin_build_voices(&srcparams.format,
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&tmpparams.format,
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&plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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err = snd_pcm_plugin_append(pcm, params->channel, plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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srcparams.format.voices = dstparams->format.voices;
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}
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/* rate resampling (when the source format has a highter resolution) */
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if (srcparams.format.format > dstparams->format.format &&
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srcparams.format.format <= SND_PCM_SFMT_FLOAT64_BE &&
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srcparams.format.rate != dstparams->format.rate) {
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tmpparams.format.rate = dstparams->format.rate;
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pdprintf("params rate resampling (1): src=%i, dst=%i\n", srcparams.format.rate, tmpparams.format.rate);
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err = snd_pcm_plugin_build_rate(&srcparams.format,
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&tmpparams.format,
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&plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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err = snd_pcm_plugin_append(pcm, params->channel, plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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srcparams.format.rate = dstparams->format.rate;
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}
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/* format change */
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if (srcparams.format.format != dstparams->format.format) {
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tmpparams.format.format = dstparams->format.format;
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pdprintf("params format change: src=%i, dst=%i\n", srcparams.format.format, tmpparams.format.format);
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switch (params->format.format) {
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case SND_PCM_SFMT_MU_LAW:
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err = snd_pcm_plugin_build_mulaw(&srcparams.format,
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&tmpparams.format,
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&plugin);
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break;
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case SND_PCM_SFMT_A_LAW:
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err = snd_pcm_plugin_build_alaw(&srcparams.format,
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&tmpparams.format,
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&plugin);
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break;
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case SND_PCM_SFMT_IMA_ADPCM:
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err = snd_pcm_plugin_build_adpcm(&srcparams.format,
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&tmpparams.format,
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&plugin);
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break;
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default:
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err = snd_pcm_plugin_build_linear(&srcparams.format,
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&tmpparams.format,
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&plugin);
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}
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if (err < 0)
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return err;
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err = snd_pcm_plugin_append(pcm, params->channel, plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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srcparams.format.format = dstparams->format.format;
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}
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/* rate resampling (when the destonation format has an equal or highter resolution) */
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if (srcparams.format.format <= dstparams->format.format &&
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srcparams.format.rate != dstparams->format.rate) {
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tmpparams.format.rate = dstparams->format.rate;
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pdprintf("params rate resampling (2): src=%i, dst=%i\n", srcparams.format.rate, tmpparams.format.rate);
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err = snd_pcm_plugin_build_rate(&srcparams.format,
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&tmpparams.format,
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&plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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err = snd_pcm_plugin_append(pcm, params->channel, plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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srcparams.format.rate = dstparams->format.rate;
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}
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/* voices extension */
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if (srcparams.format.voices < dstparams->format.voices) {
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tmpparams.format.voices = dstparams->format.voices;
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pdprintf("params voices extension: src=%i, dst=%i\n", srcparams.format.voices, tmpparams.format.voices);
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err = snd_pcm_plugin_build_voices(&srcparams.format,
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&tmpparams.format,
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&plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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err = snd_pcm_plugin_append(pcm, params->channel, plugin);
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if (err < 0) {
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snd_pcm_plugin_free(plugin);
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return err;
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}
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srcparams.format.voices = dstparams->format.voices;
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}
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/* interleave change */
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if (params->format.voices > 1 &&
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hwinfo.mode == SND_PCM_MODE_BLOCK &&
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srcparams.format.interleave != dstparams->format.interleave) {
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tmpparams.format.interleave = dstparams->format.interleave;
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pdprintf("params interleave change: src=%i, dst=%i\n", srcparams.format.interleave, tmpparams.format.interleave);
|
||||
err = snd_pcm_plugin_build_interleave(&srcparams.format,
|
||||
&tmpparams.format,
|
||||
&plugin);
|
||||
if (err < 0) {
|
||||
snd_pcm_plugin_free(plugin);
|
||||
return err;
|
||||
}
|
||||
err = snd_pcm_plugin_append(pcm, params->channel, plugin);
|
||||
if (err < 0) {
|
||||
snd_pcm_plugin_free(plugin);
|
||||
return err;
|
||||
}
|
||||
srcparams.format.interleave = dstparams->format.interleave;
|
||||
}
|
||||
/* add necessary plugins */
|
||||
if ((err = snd_pcm_plugin_format(pcm, params, &hwparams, &hwinfo)) < 0)
|
||||
return err;
|
||||
|
||||
/*
|
||||
* I/O plugins
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue