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output/alsa: don't pass audio_format to _try_format()

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Let the caller configure the audio_format object.
This commit is contained in:
Max Kellermann 2012-03-22 00:24:56 +01:00
parent 2874d68bdb
commit c10f013fc2
1 changed files with 13 additions and 16 deletions
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29
src/output/alsa_output_plugin.c
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@ -265,19 +265,16 @@ byteswap_bitformat(snd_pcm_format_t fmt)
*/
static int
alsa_output_try_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *hwparams,
struct audio_format *audio_format,
bool *reverse_endian_r,
enum sample_format sample_format)
enum sample_format sample_format,
bool *reverse_endian_r)
{
snd_pcm_format_t alsa_format = get_bitformat(sample_format);
if (alsa_format == SND_PCM_FORMAT_UNKNOWN)
return -EINVAL;
int err = snd_pcm_hw_params_set_format(pcm, hwparams, alsa_format);
if (err == 0) {
if (err == 0)
*reverse_endian_r = false;
audio_format->format = sample_format;
}
if (err != -EINVAL)
return err;
@ -287,10 +284,8 @@ alsa_output_try_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *hwparams,
return -EINVAL;
err = snd_pcm_hw_params_set_format(pcm, hwparams, alsa_format);
if (err == 0) {
if (err == 0)
*reverse_endian_r = true;
audio_format->format = sample_format;
}
return err;
}
@ -305,9 +300,8 @@ alsa_output_setup_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *hwparams,
{
/* try the input format first */
int err = alsa_output_try_format(pcm, hwparams, audio_format,
reverse_endian_r,
audio_format->format);
int err = alsa_output_try_format(pcm, hwparams, audio_format->format,
reverse_endian_r);
if (err != -EINVAL)
return err;
@ -323,12 +317,15 @@ alsa_output_setup_format(snd_pcm_t *pcm, snd_pcm_hw_params_t *hwparams,
};
for (unsigned i = 0; probe_formats[i] != SAMPLE_FORMAT_UNDEFINED; ++i) {
if (probe_formats[i] == audio_format->format)
const enum sample_format mpd_format = probe_formats[i];
if (mpd_format == audio_format->format)
continue;
err = alsa_output_try_format(pcm, hwparams, audio_format,
reverse_endian_r,
probe_formats[i]);
err = alsa_output_try_format(pcm, hwparams, mpd_format,
reverse_endian_r);
if (err == 0)
audio_format->format = mpd_format;
if (err != -EINVAL)
return err;
}