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-rw-r--r--plugins/audio/audio-alsa.c135
1 files changed, 67 insertions, 68 deletions
diff --git a/plugins/audio/audio-alsa.c b/plugins/audio/audio-alsa.c
index 51f49702..7310ea89 100644
--- a/plugins/audio/audio-alsa.c
+++ b/plugins/audio/audio-alsa.c
@@ -17,7 +17,6 @@
*/
#include "audio-api.h"
-#include "audio-alsa.h"
snd_mixer_selem_channel_id_t SCHANNELS[8] = {
SND_MIXER_SCHN_FRONT_LEFT,
@@ -43,7 +42,7 @@ PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
int num, i;
if (snd_pcm_open (&dev, name, SND_PCM_STREAM_PLAYBACK, 0) < 0)
- return 0;
+ return -1;
snd_pcm_hw_params_malloc (&params);
snd_pcm_hw_params_any (dev, params);
@@ -53,14 +52,14 @@ PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
snd_pcm_hw_params_set_channels (dev, params, ctx->channels);
if (snd_pcm_hw_params (dev, params) < 0) {
snd_pcm_hw_params_free (params);
- return 0;
+ return -1;
}
snd_pcm_prepare (dev);
snd_mixer_open (&mixer, 0);
if (snd_mixer_attach (mixer, name) < 0) {
snd_pcm_hw_params_free (params);
- return 0;
+ return -1;
}
snd_mixer_selem_register (mixer, NULL, NULL);
snd_mixer_load (mixer);
@@ -97,33 +96,33 @@ PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
}
/* allocate the global array if it hasn't been done */
- if (!dev_ctx) {
- dev_ctx = (dev_ctx_T**) malloc (sizeof(dev_ctx_T));
- dev_ctx[0] = (dev_ctx_T*) malloc (sizeof(dev_ctx_T));
- dev_ctx[0]->name = NULL;
- dev_ctx[0]->dev = NULL;
+ if (!dev_ctx_a) {
+ dev_ctx_a = (dev_ctx_alsa_T**) malloc (sizeof(dev_ctx_alsa_T));
+ dev_ctx_a[0] = (dev_ctx_alsa_T*) malloc (sizeof(dev_ctx_alsa_T));
+ dev_ctx_a[0]->name = NULL;
+ dev_ctx_a[0]->dev = NULL;
}
/* is a card with similar name already opened ? */
- for (num = 0; num < (sizeof(dev_ctx)/sizeof(dev_ctx_T)); num++) {
- if (dev_ctx[num]->name &&
- !strcmp (dev_ctx[num]->name, name))
- return 0;
+ for (num = 0; num < (sizeof(dev_ctx_a)/sizeof(dev_ctx_alsa_T)); num++) {
+ if (dev_ctx_a[num]->name &&
+ !strcmp (dev_ctx_a[num]->name, name))
+ return -1;
}
num++;
/* it's not... let us add it to the global array */
- dev_ctx = (dev_ctx_T**) realloc (dev_ctx, (num+1)*sizeof(dev_ctx_T));
- dev_ctx[num] = (dev_ctx_T*) malloc (sizeof(dev_ctx_T));
- dev_ctx[num]->name = strdup (name);
- dev_ctx[num]->dev = dev;
- dev_ctx[num]->params = params;
- dev_ctx[num]->mixer_elm = mixer_elm;
- dev_ctx[num]->mixer_elm_m = mixer_elm_m;
- dev_ctx[num]->vol_max = vol_max;
- dev_ctx[num]->vol = vol;
- dev_ctx[num]->thr_should_run = 0;
- dev_ctx[num]->thr_finished = 0;
+ dev_ctx_a = (dev_ctx_alsa_T**) realloc (dev_ctx_a, (num+1)*sizeof(dev_ctx_alsa_T));
+ dev_ctx_a[num] = (dev_ctx_alsa_T*) malloc (sizeof(dev_ctx_alsa_T));
+ dev_ctx_a[num]->name = strdup (name);
+ dev_ctx_a[num]->dev = dev;
+ dev_ctx_a[num]->params = params;
+ dev_ctx_a[num]->mixer_elm = mixer_elm;
+ dev_ctx_a[num]->mixer_elm_m = mixer_elm_m;
+ dev_ctx_a[num]->vol_max = vol_max;
+ dev_ctx_a[num]->vol = vol;
+ dev_ctx_a[num]->thr_should_run = 0;
+ dev_ctx_a[num]->thr_finished = 0;
/* make the client context aware of current card state */
for (i = 0; i < 8; i++)
@@ -131,22 +130,22 @@ PUBLIC unsigned char _alsa_init (const char *name, audioCtxHandleT *ctx) {
ctx->mute = _alsa_get_mute (num);
ctx->idx = num;
- return 1;
+ return 0;
}
PUBLIC void _alsa_free (const char *name) {
int num;
- for (num = 0; num < (sizeof(dev_ctx)/sizeof(dev_ctx_T)); num++) {
- if (dev_ctx[num]->name &&
- !strcmp (dev_ctx[num]->name, name)) {
- snd_pcm_close (dev_ctx[num]->dev);
- snd_pcm_hw_params_free (dev_ctx[num]->params);
- free (dev_ctx[num]->name);
- dev_ctx[num]->name = NULL;
- dev_ctx[num]->dev = NULL;
- free(dev_ctx[num]);
+ for (num = 0; num < (sizeof(dev_ctx_a)/sizeof(dev_ctx_alsa_T)); num++) {
+ if (dev_ctx_a[num]->name &&
+ !strcmp (dev_ctx_a[num]->name, name)) {
+ snd_pcm_close (dev_ctx_a[num]->dev);
+ snd_pcm_hw_params_free (dev_ctx_a[num]->params);
+ free (dev_ctx_a[num]->name);
+ dev_ctx_a[num]->dev = NULL;
+ dev_ctx_a[num]->name = NULL;
+ free (dev_ctx_a[num]);
return;
}
}
@@ -154,55 +153,55 @@ PUBLIC void _alsa_free (const char *name) {
PUBLIC void _alsa_play (unsigned int num) {
- if (!dev_ctx || !dev_ctx[num] || dev_ctx[num]->thr_should_run ||
+ if (!dev_ctx_a || !dev_ctx_a[num] || dev_ctx_a[num]->thr_should_run ||
access (AUDIO_BUFFER, F_OK) == -1)
return;
- dev_ctx[num]->thr_should_run = 1;
- dev_ctx[num]->thr_finished = 0;
- pthread_create(&dev_ctx[num]->thr, NULL, _play_thread_fn, (void*)dev_ctx[num]);
+ dev_ctx_a[num]->thr_should_run = 1;
+ dev_ctx_a[num]->thr_finished = 0;
+ pthread_create (&dev_ctx_a[num]->thr, NULL, _alsa_play_thread_fn, (void*)dev_ctx_a[num]);
}
PUBLIC void _alsa_stop (unsigned int num) {
- if (!dev_ctx || !dev_ctx[num] || !dev_ctx[num]->thr_should_run)
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->thr_should_run)
return;
/* stop the "while" loop in thread */
- dev_ctx[num]->thr_should_run = 0;
+ dev_ctx_a[num]->thr_should_run = 0;
- while (!dev_ctx[num]->thr_finished)
+ while (!dev_ctx_a[num]->thr_finished)
usleep(100000);
- pthread_join(dev_ctx[num]->thr, NULL);
+ pthread_join (dev_ctx_a[num]->thr, NULL);
}
PUBLIC int _alsa_get_volume (unsigned int num, unsigned int channel) {
- if (!dev_ctx || !dev_ctx[num] || !dev_ctx[num]->mixer_elm)
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm)
return;
- snd_mixer_selem_get_playback_volume (dev_ctx[num]->mixer_elm, SCHANNELS[channel], &dev_ctx[num]->vol);
+ snd_mixer_selem_get_playback_volume (dev_ctx_a[num]->mixer_elm, SCHANNELS[channel], &dev_ctx_a[num]->vol);
- return (int)(dev_ctx[num]->vol*100)/dev_ctx[num]->vol_max;
+ return (int)(dev_ctx_a[num]->vol*100)/dev_ctx_a[num]->vol_max;
}
PUBLIC void _alsa_set_volume (unsigned int num, unsigned int channel, int vol) {
- if (!dev_ctx || !dev_ctx[num] || !dev_ctx[num]->mixer_elm ||
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
0 > vol > 100)
return;
- snd_mixer_selem_set_playback_volume (dev_ctx[num]->mixer_elm, SCHANNELS[channel], (vol*dev_ctx[num]->vol_max)/100);
+ snd_mixer_selem_set_playback_volume (dev_ctx_a[num]->mixer_elm, SCHANNELS[channel], (vol*dev_ctx_a[num]->vol_max)/100);
}
PUBLIC void _alsa_set_volume_all (unsigned int num, int vol) {
- if (!dev_ctx || !dev_ctx[num] || !dev_ctx[num]->mixer_elm ||
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm ||
0 > vol > 100)
- snd_mixer_selem_set_playback_volume_all (dev_ctx[num]->mixer_elm, (vol*dev_ctx[num]->vol_max)/100);
+ snd_mixer_selem_set_playback_volume_all (dev_ctx_a[num]->mixer_elm, (vol*dev_ctx_a[num]->vol_max)/100);
}
PUBLIC unsigned char _alsa_get_mute (unsigned int num) {
@@ -210,18 +209,18 @@ PUBLIC unsigned char _alsa_get_mute (unsigned int num) {
int mute = 0;
snd_mixer_elem_t *elm_m;
- if (!dev_ctx || !dev_ctx[num] || !dev_ctx[num]->mixer_elm)
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm)
return;
- dev_ctx[num]->mixer_elm_m ? (elm_m = dev_ctx[num]->mixer_elm_m) :
- (elm_m = dev_ctx[num]->mixer_elm);
+ dev_ctx_a[num]->mixer_elm_m ? (elm_m = dev_ctx_a[num]->mixer_elm_m) :
+ (elm_m = dev_ctx_a[num]->mixer_elm);
if (snd_mixer_selem_has_playback_switch (elm_m)) {
snd_mixer_selem_get_playback_switch (elm_m, SND_MIXER_SCHN_FRONT_LEFT, &mute);
snd_mixer_selem_get_playback_switch (elm_m, SND_MIXER_SCHN_FRONT_RIGHT, &mute);
}
- if (dev_ctx[num]->mixer_elm_m)
+ if (dev_ctx_a[num]->mixer_elm_m)
return (unsigned char)mute;
else
return (unsigned char)!mute;
@@ -232,14 +231,14 @@ PUBLIC void _alsa_set_mute (unsigned int num, unsigned char tomute) {
snd_mixer_elem_t *elm_m;
int mute;
- if (!dev_ctx || !dev_ctx[num] || !dev_ctx[num]->mixer_elm || 1 < tomute < 0)
+ if (!dev_ctx_a || !dev_ctx_a[num] || !dev_ctx_a[num]->mixer_elm || 1 < tomute < 0)
return;
- if (dev_ctx[num]->mixer_elm_m) {
- elm_m = dev_ctx[num]->mixer_elm_m;
+ if (dev_ctx_a[num]->mixer_elm_m) {
+ elm_m = dev_ctx_a[num]->mixer_elm_m;
mute = (int)!tomute;
} else {
- elm_m = dev_ctx[num]->mixer_elm;
+ elm_m = dev_ctx_a[num]->mixer_elm;
mute = (int)tomute;
}
@@ -249,25 +248,25 @@ PUBLIC void _alsa_set_mute (unsigned int num, unsigned char tomute) {
PUBLIC void _alsa_set_rate (unsigned int num, unsigned int rate) {
- if (!dev_ctx || !dev_ctx[num])
+ if (!dev_ctx_a || !dev_ctx_a[num])
return;
- snd_pcm_hw_params_set_rate_near (dev_ctx[num]->dev, dev_ctx[num]->params, &rate, 0);
+ snd_pcm_hw_params_set_rate_near (dev_ctx_a[num]->dev, dev_ctx_a[num]->params, &rate, 0);
}
PUBLIC void _alsa_set_channels (unsigned int num, unsigned int channels) {
- if (!dev_ctx || !dev_ctx[num])
+ if (!dev_ctx_a || !dev_ctx_a[num])
return;
- snd_pcm_hw_params_set_channels (dev_ctx[num]->dev, dev_ctx[num]->params, channels);
+ snd_pcm_hw_params_set_channels (dev_ctx_a[num]->dev, dev_ctx_a[num]->params, channels);
}
/* ---- LOCAL THREADED FUNCTIONS ---- */
-STATIC void* _play_thread_fn (void *ctx) {
+STATIC void* _alsa_play_thread_fn (void *ctx) {
- dev_ctx_T *dev_ctx = (dev_ctx_T *)ctx;
+ dev_ctx_alsa_T *dev_ctx_a = (dev_ctx_alsa_T *)ctx;
FILE *file = NULL;
char *buf = NULL;
long size;
@@ -275,7 +274,7 @@ STATIC void* _play_thread_fn (void *ctx) {
file = fopen (AUDIO_BUFFER, "rb");
- while (dev_ctx->thr_should_run && file && (access (AUDIO_BUFFER, F_OK) != -1) ) {
+ while (dev_ctx_a->thr_should_run && file && (access (AUDIO_BUFFER, F_OK) != -1) ) {
fseek (file, 0, SEEK_END);
size = ftell (file);
buf = (char*) realloc (buf, size * sizeof(char));
@@ -285,15 +284,15 @@ STATIC void* _play_thread_fn (void *ctx) {
fread (buf, 1, size, file);
fflush (file);
- if ((res = snd_pcm_writei (dev_ctx->dev, buf, frames)) != frames) {
- snd_pcm_recover (dev_ctx->dev, res, 0);
- snd_pcm_prepare (dev_ctx->dev);
+ if ((res = snd_pcm_writei (dev_ctx_a->dev, buf, frames)) != frames) {
+ snd_pcm_recover (dev_ctx_a->dev, res, 0);
+ snd_pcm_prepare (dev_ctx_a->dev);
}
/* snd_pcm_drain (dev_ctx->dev); */
}
if (buf) free(buf);
if (file) fclose(file);
- dev_ctx->thr_finished = 1;
+ dev_ctx_a->thr_finished = 1;
return 0;
}