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Updated to latest alsa-lib PCM API

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This commit is contained in:
Jaroslav Kysela 2002-09-19 16:20:08 +00:00
parent 163c302a6a
commit 11080289c7
2 changed files with 30 additions and 23 deletions
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33
ac3dec/output.c
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@ -20,6 +20,7 @@
#include <stdio.h>
#include <errno.h>
#define ALSA_PCM_NEW_HW_PARAMS_API
#include <alsa/asoundlib.h>
typedef signed short sint_16;
@ -38,8 +39,7 @@ int output_open(output_t *output)
const char *pcm_name = output->pcm_name;
char devstr[128];
snd_pcm_hw_params_t *params;
snd_pcm_sframes_t buffer_time;
snd_pcm_sframes_t period_time, tmp;
unsigned int rate, buffer_time, period_time, tmp;
int err, step;
snd_pcm_hw_params_alloca(&params);
@ -126,14 +126,15 @@ int output_open(output_t *output)
fprintf(stderr, "Channels count non available");
goto __close;
}
err = snd_pcm_hw_params_set_rate_near(pcm, params, output->rate, 0);
rate = output->rate;
err = snd_pcm_hw_params_set_rate_near(pcm, params, &rate, 0);
if (err < 0) {
fprintf(stderr, "Rate not available");
goto __close;
}
buffer_time = snd_pcm_hw_params_set_buffer_time_near(pcm, params,
500000, 0);
if (buffer_time < 0) {
buffer_time = 500000;
err = snd_pcm_hw_params_set_buffer_time_near(pcm, params, &buffer_time, 0);
if (err < 0) {
fprintf(stderr, "Buffer time not available");
goto __close;
}
@ -141,19 +142,19 @@ int output_open(output_t *output)
period_time = 10000 * 2;
do {
period_time /= 2;
tmp = snd_pcm_hw_params_set_period_time_near(pcm, params,
period_time, 0);
if (tmp == period_time) {
period_time /= 3;
tmp = snd_pcm_hw_params_set_period_time_near(pcm, params,
period_time, 0);
if (tmp == period_time)
period_time = 10000 * 2;
}
if (period_time < 0) {
tmp = period_time;
err = snd_pcm_hw_params_set_period_time_near(pcm, params, &tmp, 0);
if (err < 0) {
fprintf(stderr, "Period time not available");
goto __close;
}
if (tmp == period_time) {
period_time /= 3;
tmp = period_time;
err = snd_pcm_hw_params_set_period_time_near(pcm, params, &tmp, 0);
if (tmp == period_time)
period_time = 10000 * 2;
}
} while (buffer_time == period_time && period_time > 10000);
if (buffer_time == period_time) {
fprintf(stderr, "Buffer time and period time match, could not use\n");