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Check return conditions during ALSA setup.

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Error checking during setup is a good thing...
This commit is contained in:
Ragnvald Maartmann-Moe IV 2004-01-17 22:03:58 +00:00
parent eb69be5e5a
commit a42a0aa974
1 changed files with 126 additions and 68 deletions
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194
libs/audio/targets/snd_alsa.c
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@ -1,7 +1,7 @@
/*
snd_alsa.c
Support for ALSA 1.0 sound driver (cvs development version)
Support for the ALSA 1.0.1 sound driver
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
@ -42,18 +42,14 @@ static __attribute__ ((unused)) const char rcsid[] =
#include "QF/sound.h"
#include "QF/sys.h"
static int snd_inited;
static snd_pcm_t *pcm;
static const char *pcmname = NULL;
static snd_pcm_uframes_t buffer_size;
static int snd_blocked = 0;
static int snd_inited;
static int snd_blocked = 0;
static volatile dma_t sn;
static snd_pcm_uframes_t buffer_size;
static cvar_t *snd_stereo;
static cvar_t *snd_rate;
static cvar_t *snd_device;
static cvar_t *snd_bits;
static void *alsa_handle;
static const char *pcmname = NULL;
static snd_pcm_t *pcm;
static plugin_t plugin_info;
static plugin_data_t plugin_info_data;
@ -63,7 +59,10 @@ static general_funcs_t plugin_info_general_funcs;
static snd_output_data_t plugin_info_snd_output_data;
static snd_output_funcs_t plugin_info_snd_output_funcs;
static void *alsa_handle;
static cvar_t *snd_bits;
static cvar_t *snd_device;
static cvar_t *snd_rate;
static cvar_t *snd_stereo;
#define QF_ALSA_NEED(ret, func, params) \
static ret (*qf##func) params;
@ -142,43 +141,57 @@ SNDDMA_Init (void)
stereo = snd_stereo->int_val;
if (!pcmname)
pcmname = "default";
if ((err = qfsnd_pcm_open (&pcm, pcmname, SND_PCM_STREAM_PLAYBACK,
SND_PCM_NONBLOCK)) < 0) {
err = qfsnd_pcm_open (&pcm, pcmname, SND_PCM_STREAM_PLAYBACK,
SND_PCM_NONBLOCK);
if (0 > err) {
Sys_Printf ("Error: audio open error: %s\n", qfsnd_strerror (err));
return 0;
}
Sys_Printf ("Using PCM %s.\n", pcmname);
qfsnd_pcm_hw_params_any (pcm, hw);
if (qfsnd_pcm_hw_params_set_access (pcm, hw,
SND_PCM_ACCESS_MMAP_INTERLEAVED) < 0) {
Sys_Printf ("ALSA: interleaved is not supported\n");
err = qfsnd_pcm_hw_params_any (pcm, hw);
if (0 > err) {
Sys_Printf ("ALSA: error setting hw_params_any. %s\n",
qfsnd_strerror (err));
goto error;
}
err = qfsnd_pcm_hw_params_set_access (pcm, hw,
SND_PCM_ACCESS_MMAP_INTERLEAVED);
if (0 > err) {
Sys_Printf ("ALSA: Failure to set noninterleaved PCM access. %s\n"
"Note: Interleaved is not supported\n",
qfsnd_strerror (err));
goto error;
}
switch (bps) {
case -1:
if (qfsnd_pcm_hw_params_set_format (pcm, hw, SND_PCM_FORMAT_S16_LE)
>= 0) {
err = qfsnd_pcm_hw_params_set_format (pcm, hw,
SND_PCM_FORMAT_S16_LE);
if (0 <= err) {
bps = 16;
} else if (qfsnd_pcm_hw_params_set_format (pcm, hw,
SND_PCM_FORMAT_U8)
>= 0) {
} else if (0 <= (err = qfsnd_pcm_hw_params_set_format (pcm, hw,
SND_PCM_FORMAT_U8))) {
bps = 8;
} else {
Sys_Printf ("ALSA: no useable formats\n");
Sys_Printf ("ALSA: no useable formats. %s\n",
qfsnd_strerror (err));
goto error;
}
break;
case 8:
case 16:
if (qfsnd_pcm_hw_params_set_format (pcm, hw,
bps == 8 ? SND_PCM_FORMAT_U8 :
SND_PCM_FORMAT_S16) >= 0) {
break;
err = qfsnd_pcm_hw_params_set_format (pcm, hw, bps == 8 ?
SND_PCM_FORMAT_U8 :
SND_PCM_FORMAT_S16);
if (0 > err) {
Sys_Printf ("ALSA: no usable formats. %s\n",
qfsnd_strerror (err));
goto error;
}
/* Fall through */
break;
default:
Sys_Printf ("ALSA: desired format not supported\n");
goto error;
@ -186,21 +199,27 @@ SNDDMA_Init (void)
switch (stereo) {
case -1:
if (qfsnd_pcm_hw_params_set_channels (pcm, hw, 2) >= 0) {
err = qfsnd_pcm_hw_params_set_channels (pcm, hw, 2);
if (0 <= err) {
stereo = 1;
} else if (qfsnd_pcm_hw_params_set_channels (pcm, hw, 1) >= 0) {
} else if (0 <= (err = qfsnd_pcm_hw_params_set_channels (pcm, hw,
1))) {
stereo = 0;
} else {
Sys_Printf ("ALSA: no useable channels\n");
Sys_Printf ("ALSA: no usable channels. %s\n",
qfsnd_strerror (err));
goto error;
}
break;
case 0:
case 1:
if (qfsnd_pcm_hw_params_set_channels (pcm, hw, stereo ? 2 : 1)
>= 0)
break;
/* Fall through */
err = qfsnd_pcm_hw_params_set_channels (pcm, hw, stereo ? 2 : 1);
if (0 > err) {
Sys_Printf ("ALSA: no usable channels. %s\n",
qfsnd_strerror (err));
goto error;
}
break;
default:
Sys_Printf ("ALSA: desired channels not supported\n");
goto error;
@ -209,20 +228,23 @@ SNDDMA_Init (void)
switch (rate) {
case 0:
rate = 44100;
if (qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0) >= 0) {
frag_size = 256; // assuming stereo 8 bit
err = qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0);
if (0 <= err) {
frag_size = 32 * bps;
} else {
rate = 22050;
if (qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0)
>= 0) {
frag_size = 128; // assuming stereo 8 bit
err = qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0);
if (0 <= err) {
frag_size = 16 * bps;
} else {
rate = 11025;
if (qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0)
>= 0) {
frag_size = 64; // assuming stereo 8 bit
err = qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate,
0);
if (0 <= err) {
frag_size = 8 * bps;
} else {
Sys_Printf ("ALSA: no useable rates\n");
Sys_Printf ("ALSA: no usable rates. %s\n",
qfsnd_strerror (err));
goto error;
}
}
@ -231,43 +253,79 @@ SNDDMA_Init (void)
case 11025:
case 22050:
case 44100:
if (qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0) >= 0) {
frag_size = 64 * rate / 11025; // assuming stereo 8 bit
break;
err = qfsnd_pcm_hw_params_set_rate_near (pcm, hw, &rate, 0);
if (0 > err) {
Sys_Printf ("ALSA: desired rate %i not supported. %s\n", rate,
qfsnd_strerror (err));
goto error;
}
/* Fall through */
frag_size = 8 * bps * rate / 11025;
break;
default:
Sys_Printf ("ALSA: desired rate not supported\n");
Sys_Printf ("ALSA: desired rate %i not supported.\n", rate);
goto error;
}
qfsnd_pcm_hw_params_set_period_size_near (pcm, hw, &frag_size, 0);
err = qfsnd_pcm_hw_params (pcm, hw);
if (err < 0) {
Sys_Printf ("ALSA: unable to install hw params\n");
err = qfsnd_pcm_hw_params_set_period_size_near (pcm, hw, &frag_size, 0);
if (0 > err) {
Sys_Printf ("ALSA: unable to set period size near %i. %s\n",
(int) frag_size, qfsnd_strerror (err));
goto error;
}
err = qfsnd_pcm_hw_params (pcm, hw);
if (0 > err) {
Sys_Printf ("ALSA: unable to install hw params: %s\n",
qfsnd_strerror (err));
goto error;
}
err = qfsnd_pcm_sw_params_current (pcm, sw);
if (0 > err) {
Sys_Printf ("ALSA: unable to determine current sw params. %s\n",
qfsnd_strerror (err));
goto error;
}
err = qfsnd_pcm_sw_params_set_start_threshold (pcm, sw, ~0U);
if (0 > err) {
Sys_Printf ("ALSA: unable to set playback threshold. %s\n",
qfsnd_strerror (err));
goto error;
}
err = qfsnd_pcm_sw_params_set_stop_threshold (pcm, sw, ~0U);
if (0 > err) {
Sys_Printf ("ALSA: unable to set playback stop threshold. %s\n",
qfsnd_strerror (err));
goto error;
}
qfsnd_pcm_sw_params_current (pcm, sw);
qfsnd_pcm_sw_params_set_start_threshold (pcm, sw, ~0U);
qfsnd_pcm_sw_params_set_stop_threshold (pcm, sw, ~0U);
err = qfsnd_pcm_sw_params (pcm, sw);
if (err < 0) {
Sys_Printf ("ALSA: unable to install sw params\n");
if (0 > err) {
Sys_Printf ("ALSA: unable to install sw params. %s\n",
qfsnd_strerror (err));
goto error;
}
memset ((dma_t *) &sn, 0, sizeof (sn));
sn.splitbuffer = 0;
sn.channels = stereo + 1;
qfsnd_pcm_hw_params_get_period_size (hw, (snd_pcm_uframes_t *)
&sn.submission_chunk, 0);
// don't mix less than this
sn.samplepos = 0; // in mono samples
// don't mix less than this in mono samples:
err = qfsnd_pcm_hw_params_get_period_size (hw, (snd_pcm_uframes_t *)
&sn.submission_chunk, 0);
if (0 > err) {
Sys_Printf ("ALSA: unable to get period size. %s\n",
qfsnd_strerror (err));
goto error;
}
sn.samplepos = 0;
sn.samplebits = bps;
qfsnd_pcm_hw_params_get_buffer_size (hw, &buffer_size); // FIXME: check error return value
err = qfsnd_pcm_hw_params_get_buffer_size (hw, &buffer_size);
if (0 > err) {
Sys_Printf ("ALSA: unable to get buffer size. %s\n",
qfsnd_strerror (err));
goto error;
}
sn.samples = buffer_size * sn.channels; // mono samples in buffer
sn.speed = rate;
SNDDMA_GetDMAPos (); //XXX sets sn.buffer