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ypr0: Work around warning introduced by buggy alsa headers.

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Change-Id: I7c57ad5504db51d2f7563d2f26ff66f8d189b360
This commit is contained in:
Thomas Martitz 2012-01-22 20:59:20 +01:00
parent 31a3f7619d
commit 38050f46af
1 changed files with 28 additions and 19 deletions
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47
firmware/target/hosted/pcm-alsa.c
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@ -91,7 +91,7 @@ static int set_hwparams(snd_pcm_t *handle, unsigned sample_rate)
unsigned int rrate;
int err;
snd_pcm_hw_params_t *params;
snd_pcm_hw_params_alloca(&params);
snd_pcm_hw_params_malloc(&params);
/* choose all parameters */
@ -99,28 +99,28 @@ static int set_hwparams(snd_pcm_t *handle, unsigned sample_rate)
if (err < 0)
{
printf("Broken configuration for playback: no configurations available: %s\n", snd_strerror(err));
return err;
goto error;
}
/* set the interleaved read/write format */
err = snd_pcm_hw_params_set_access(handle, params, access_);
if (err < 0)
{
printf("Access type not available for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
/* set the sample format */
err = snd_pcm_hw_params_set_format(handle, params, format);
if (err < 0)
{
printf("Sample format not available for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
/* set the count of channels */
err = snd_pcm_hw_params_set_channels(handle, params, channels);
if (err < 0)
{
printf("Channels count (%i) not available for playbacks: %s\n", channels, snd_strerror(err));
return err;
goto error;
}
/* set the stream rate */
rrate = sample_rate;
@ -128,28 +128,29 @@ static int set_hwparams(snd_pcm_t *handle, unsigned sample_rate)
if (err < 0)
{
printf("Rate %iHz not available for playback: %s\n", rate, snd_strerror(err));
return err;
goto error;
}
if (rrate != sample_rate)
{
printf("Rate doesn't match (requested %iHz, get %iHz)\n", sample_rate, err);
return -EINVAL;
err = -EINVAL;
goto error;
}
/* set the buffer size */
err = snd_pcm_hw_params_set_buffer_size_near(handle, params, &buffer_size);
if (err < 0)
{
printf("Unable to set buffer size %i for playback: %s\n", buffer_size, snd_strerror(err));
return err;
printf("Unable to set buffer size %ld for playback: %s\n", buffer_size, snd_strerror(err));
goto error;
}
/* set the period size */
err = snd_pcm_hw_params_set_period_size_near (handle, params, &period_size, NULL);
if (err < 0)
{
printf("Unable to set period size %i for playback: %s\n", period_size, snd_strerror(err));
return err;
printf("Unable to set period size %ld for playback: %s\n", period_size, snd_strerror(err));
goto error;
}
if (!frames)
frames = malloc(period_size * channels * sizeof(short));
@ -159,9 +160,13 @@ static int set_hwparams(snd_pcm_t *handle, unsigned sample_rate)
if (err < 0)
{
printf("Unable to set hw params for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
return 0;
err = 0; /* success */
error:
snd_pcm_hw_params_free(params);
return err;
}
/* Set sw params: playback start threshold and low buffer watermark */
@ -170,37 +175,41 @@ static int set_swparams(snd_pcm_t *handle)
int err;
snd_pcm_sw_params_t *swparams;
snd_pcm_sw_params_alloca(&swparams);
snd_pcm_sw_params_malloc(&swparams);
/* get the current swparams */
err = snd_pcm_sw_params_current(handle, swparams);
if (err < 0)
{
printf("Unable to determine current swparams for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
/* start the transfer when the buffer is haalmost full */
err = snd_pcm_sw_params_set_start_threshold(handle, swparams, buffer_size / 2);
if (err < 0)
{
printf("Unable to set start threshold mode for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
/* allow the transfer when at least period_size samples can be processed */
err = snd_pcm_sw_params_set_avail_min(handle, swparams, period_size);
if (err < 0)
{
printf("Unable to set avail min for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
/* write the parameters to the playback device */
err = snd_pcm_sw_params(handle, swparams);
if (err < 0)
{
printf("Unable to set sw params for playback: %s\n", snd_strerror(err));
return err;
goto error;
}
return 0;
err = 0; /* success */
error:
snd_pcm_sw_params_free(swparams);
return err;
}
/* copy pcm samples to a spare buffer, suitable for snd_pcm_writei() */