diff options
Diffstat (limited to 'backends/alsa/alsa-stream-output-control.c')
| -rw-r--r-- | backends/alsa/alsa-stream-output-control.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/backends/alsa/alsa-stream-output-control.c b/backends/alsa/alsa-stream-output-control.c index 1f4faf8..5b6a1eb 100644 --- a/backends/alsa/alsa-stream-output-control.c +++ b/backends/alsa/alsa-stream-output-control.c @@ -22,6 +22,7 @@ #include <libmatemixer/matemixer.h> #include <libmatemixer/matemixer-private.h> +#include "alsa-compat.h" #include "alsa-constants.h" #include "alsa-element.h" #include "alsa-stream-control.h" @@ -52,7 +53,8 @@ static gboolean alsa_stream_output_control_get_decibel_from_volume (AlsaStreamCo guint volume, gdouble *decibel); -static void read_volume_data (snd_mixer_elem_t *el, AlsaControlData *data); +static void read_volume_data (snd_mixer_elem_t *el, + AlsaControlData *data); static void alsa_stream_output_control_class_init (AlsaStreamOutputControlClass *klass) @@ -195,6 +197,7 @@ alsa_stream_output_control_get_volume_from_decibel (AlsaStreamControl *control, gdouble decibel, guint *volume) { +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 17) snd_mixer_elem_t *el; glong value; gint ret; @@ -213,6 +216,9 @@ alsa_stream_output_control_get_volume_from_decibel (AlsaStreamControl *control, *volume = value; return TRUE; +#else + return FALSE; +#endif } static gboolean @@ -220,6 +226,7 @@ alsa_stream_output_control_get_decibel_from_volume (AlsaStreamControl *control, guint volume, gdouble *decibel) { +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 17) snd_mixer_elem_t *el; glong value; gint ret; @@ -238,6 +245,9 @@ alsa_stream_output_control_get_decibel_from_volume (AlsaStreamControl *control, *decibel = value / 100.0; return TRUE; +#else + return FALSE; +#endif } static void @@ -249,14 +259,19 @@ read_volume_data (snd_mixer_elem_t *el, AlsaControlData *data) gint i; /* Read volume ranges, this call should never fail on valid input */ +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 10) ret = snd_mixer_selem_get_playback_volume_range (el, &min, &max); if G_UNLIKELY (ret < 0) { g_warning ("Failed to read playback volume range: %s", snd_strerror (ret)); return; } +#else + snd_mixer_selem_get_playback_volume_range (el, &min, &max); +#endif data->min = (guint) min; data->max = (guint) max; +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 10) /* This fails when decibels are not supported */ ret = snd_mixer_selem_get_playback_dB_range (el, &min, &max); if (ret == 0) { @@ -264,6 +279,9 @@ read_volume_data (snd_mixer_elem_t *el, AlsaControlData *data) data->max_decibel = max / 100.0; } else data->min_decibel = data->max_decibel = -MATE_MIXER_INFINITY; +#else + data->min_decibel = data->max_decibel = -MATE_MIXER_INFINITY; +#endif for (i = 0; i < MATE_MIXER_CHANNEL_MAX; i++) data->v[i] = data->min; @@ -299,7 +317,7 @@ read_volume_data (snd_mixer_elem_t *el, AlsaControlData *data) /* We use numeric channel indices, but ALSA only works with channel * positions, go over all the positions supported by ALSA and create * a list of channels */ - for (channel = 0; channel < SND_MIXER_SCHN_LAST; channel++) { + for (channel = 0; channel < SND_MIXER_SCHN_LAST; channel++) { if (snd_mixer_selem_has_playback_channel (el, channel) == 0) continue; |