From 10a0b2193303063167a297f542c4de0952a4cd25 Mon Sep 17 00:00:00 2001 From: Michal Ratajsky Date: Sat, 26 Sep 2015 16:59:13 +0200 Subject: alsa: Fix FTBFS with old versions of ALSA (fixes #4) --- backends/alsa/Makefile.am | 1 + backends/alsa/alsa-compat.h | 26 ++++++++++++++++++++++++++ backends/alsa/alsa-constants.c | 13 +++++++++++-- backends/alsa/alsa-device.c | 3 +++ backends/alsa/alsa-stream-input-control.c | 22 ++++++++++++++++++++-- backends/alsa/alsa-stream-output-control.c | 22 ++++++++++++++++++++-- 6 files changed, 81 insertions(+), 6 deletions(-) create mode 100644 backends/alsa/alsa-compat.h (limited to 'backends/alsa') diff --git a/backends/alsa/Makefile.am b/backends/alsa/Makefile.am index c192cfb..7561290 100644 --- a/backends/alsa/Makefile.am +++ b/backends/alsa/Makefile.am @@ -14,6 +14,7 @@ libmatemixer_alsa_la_CFLAGS = \ libmatemixer_alsa_la_SOURCES = \ alsa-backend.c \ alsa-backend.h \ + alsa-compat.h \ alsa-constants.c \ alsa-constants.h \ alsa-device.c \ diff --git a/backends/alsa/alsa-compat.h b/backends/alsa/alsa-compat.h new file mode 100644 index 0000000..8b6b134 --- /dev/null +++ b/backends/alsa/alsa-compat.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2015 Michal Ratajsky + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the licence, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef ALSA_COMPAT_H +#define ALSA_COMPAT_H + +#define ALSA_PACK_VERSION(major, minor, subminor) \ + (((major) << 16) | \ + ((minor) << 8) | \ + (subminor)) + +#endif /* ALSA_COMPAT_H */ diff --git a/backends/alsa/alsa-constants.c b/backends/alsa/alsa-constants.c index 853db95..c55fc6e 100644 --- a/backends/alsa/alsa-constants.c +++ b/backends/alsa/alsa-constants.c @@ -20,6 +20,7 @@ #include #include +#include "alsa-compat.h" #include "alsa-constants.h" /* @@ -228,9 +229,11 @@ const MateMixerChannelPosition alsa_channel_map_from[SND_MIXER_SCHN_LAST] = [SND_MIXER_SCHN_REAR_RIGHT] = MATE_MIXER_CHANNEL_BACK_RIGHT, [SND_MIXER_SCHN_FRONT_CENTER] = MATE_MIXER_CHANNEL_FRONT_CENTER, [SND_MIXER_SCHN_WOOFER] = MATE_MIXER_CHANNEL_LFE, +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 10) [SND_MIXER_SCHN_SIDE_LEFT] = MATE_MIXER_CHANNEL_SIDE_LEFT, [SND_MIXER_SCHN_SIDE_RIGHT] = MATE_MIXER_CHANNEL_SIDE_RIGHT, [SND_MIXER_SCHN_REAR_CENTER] = MATE_MIXER_CHANNEL_BACK_CENTER +#endif }; const snd_mixer_selem_channel_id_t alsa_channel_map_to[MATE_MIXER_CHANNEL_MAX] = @@ -243,11 +246,17 @@ const snd_mixer_selem_channel_id_t alsa_channel_map_to[MATE_MIXER_CHANNEL_MAX] = [MATE_MIXER_CHANNEL_LFE] = SND_MIXER_SCHN_WOOFER, [MATE_MIXER_CHANNEL_BACK_LEFT] = SND_MIXER_SCHN_REAR_LEFT, [MATE_MIXER_CHANNEL_BACK_RIGHT] = SND_MIXER_SCHN_REAR_RIGHT, +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 10) [MATE_MIXER_CHANNEL_BACK_CENTER] = SND_MIXER_SCHN_REAR_CENTER, - [MATE_MIXER_CHANNEL_FRONT_LEFT_CENTER] = SND_MIXER_SCHN_UNKNOWN, - [MATE_MIXER_CHANNEL_FRONT_RIGHT_CENTER] = SND_MIXER_SCHN_UNKNOWN, [MATE_MIXER_CHANNEL_SIDE_LEFT] = SND_MIXER_SCHN_SIDE_LEFT, [MATE_MIXER_CHANNEL_SIDE_RIGHT] = SND_MIXER_SCHN_SIDE_RIGHT, +#else + [MATE_MIXER_CHANNEL_BACK_CENTER] = SND_MIXER_SCHN_UNKNOWN, + [MATE_MIXER_CHANNEL_SIDE_LEFT] = SND_MIXER_SCHN_UNKNOWN, + [MATE_MIXER_CHANNEL_SIDE_RIGHT] = SND_MIXER_SCHN_UNKNOWN, +#endif + [MATE_MIXER_CHANNEL_FRONT_LEFT_CENTER] = SND_MIXER_SCHN_UNKNOWN, + [MATE_MIXER_CHANNEL_FRONT_RIGHT_CENTER] = SND_MIXER_SCHN_UNKNOWN, [MATE_MIXER_CHANNEL_TOP_FRONT_LEFT] = SND_MIXER_SCHN_UNKNOWN, [MATE_MIXER_CHANNEL_TOP_FRONT_RIGHT] = SND_MIXER_SCHN_UNKNOWN, [MATE_MIXER_CHANNEL_TOP_FRONT_CENTER] = SND_MIXER_SCHN_UNKNOWN, diff --git a/backends/alsa/alsa-device.c b/backends/alsa/alsa-device.c index f76478f..fb12447 100644 --- a/backends/alsa/alsa-device.c +++ b/backends/alsa/alsa-device.c @@ -24,6 +24,7 @@ #include #include +#include "alsa-compat.h" #include "alsa-constants.h" #include "alsa-device.h" #include "alsa-element.h" @@ -707,11 +708,13 @@ load_element (AlsaDevice *device, snd_mixer_elem_t *el) gboolean cenum = FALSE; gboolean penum = FALSE; +#if SND_LIB_VERSION >= ALSA_PACK_VERSION (1, 0, 10) /* The enumeration may have a capture or a playback capability. * If it has either both or none, try to guess the more appropriate * direction. */ cenum = snd_mixer_selem_is_enum_capture (el); penum = snd_mixer_selem_is_enum_playback (el); +#endif if (cenum ^ penum) { if (cenum == TRUE) direction = MATE_MIXER_DIRECTION_INPUT; diff --git a/backends/alsa/alsa-stream-input-control.c b/backends/alsa/alsa-stream-input-control.c index 2e3f46d..1954008 100644 --- a/backends/alsa/alsa-stream-input-control.c +++ b/backends/alsa/alsa-stream-input-control.c @@ -22,6 +22,7 @@ #include #include +#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_input_control_get_decibel_from_volume (AlsaStreamCon 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_input_control_class_init (AlsaStreamInputControlClass *klass) @@ -195,6 +197,7 @@ alsa_stream_input_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_input_control_get_volume_from_decibel (AlsaStreamControl *control, *volume = value; return TRUE; +#else + return FALSE; +#endif } static gboolean @@ -220,6 +226,7 @@ alsa_stream_input_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_input_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_capture_volume_range (el, &min, &max); if G_UNLIKELY (ret < 0) { g_warning ("Failed to read capture volume range: %s", snd_strerror (ret)); return; } +#else + snd_mixer_selem_get_capture_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_capture_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_capture_channel (el, channel) == 0) continue; 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 #include +#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; -- cgit v1.2.1