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Added better period_time setup to the ALSA output code.

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Added end-of-file checking to the libac3.
This commit is contained in:
Jaroslav Kysela 2001-05-08 08:55:33 +00:00
parent 3d1998857a
commit c40c3b5623
6 changed files with 47 additions and 23 deletions
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24
ac3dec/output.c
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@ -41,8 +41,8 @@ int output_open(output_t *output)
snd_pcm_hw_params_t *params;
snd_pcm_sw_params_t *swparams;
snd_pcm_sframes_t buffer_time;
snd_pcm_sframes_t period_time;
int err;
snd_pcm_sframes_t period_time, tmp;
int err, step;
snd_pcm_hw_params_alloca(&params);
snd_pcm_sw_params_alloca(&swparams);
@ -112,11 +112,19 @@ int output_open(output_t *output)
fprintf(stderr, "Buffer time not available");
goto __close;
}
period_time = 100000 * 2;
step = 2;
period_time = 10000 * 2;
do {
period_time /= 2;
period_time = snd_pcm_hw_params_set_period_time_near(pcm, params,
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) {
fprintf(stderr, "Period time not available");
goto __close;
@ -205,11 +213,13 @@ int output_play(sint_16* output_samples, uint_32 num_frames)
if (res == -EPIPE)
res = snd_pcm_prepare(pcm);
res = res < 0 ? res : snd_pcm_writei(pcm, (void *)output_samples, num_frames);
} while (res == -EPIPE);
if (res > 0) {
output_samples += out_config.channels * res;
num_frames -= res;
}
} while (res == -EPIPE || num_frames > 0);
if (res < 0)
fprintf(stderr, "writei returned error: %s\n", snd_strerror(res));
else if (res != num_frames)
fprintf(stderr, "writei retured %li (expected %li)\n", res, (long)(num_frames));
return res < 0 ? (int)res : 0;
}