Adding upstream version 0.3.65.upstream/0.3.65upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 476 insertions, 0 deletions

diff --git a/spa/plugins/alsa/acp/channelmap.h b/spa/plugins/alsa/acp/channelmap.h
new file mode 100644
index 0000000..adb4868
--- /dev/null
+++ b/spa/plugins/alsa/acp/channelmap.h
@@ -0,0 +1,476 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
+  PulseAudio 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 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifndef PULSE_CHANNELMAP_H
+#define PULSE_CHANNELMAP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "spa/utils/defs.h"
+
+#define PA_CHANNELS_MAX	64
+
+#define PA_CHANNEL_MAP_SNPRINT_MAX (PA_CHANNELS_MAX * 32)
+
+typedef enum pa_channel_map_def {
+    PA_CHANNEL_MAP_AIFF,
+    PA_CHANNEL_MAP_ALSA,
+    PA_CHANNEL_MAP_AUX,
+    PA_CHANNEL_MAP_WAVEEX,
+    PA_CHANNEL_MAP_OSS,
+    PA_CHANNEL_MAP_DEF_MAX,
+    PA_CHANNEL_MAP_DEFAULT = PA_CHANNEL_MAP_AIFF
+} pa_channel_map_def_t;
+
+typedef enum pa_channel_position {
+	PA_CHANNEL_POSITION_INVALID = -1,
+	PA_CHANNEL_POSITION_MONO = 0,
+
+	PA_CHANNEL_POSITION_FRONT_LEFT,               /**< Apple, Dolby call this 'Left' */
+	PA_CHANNEL_POSITION_FRONT_RIGHT,              /**< Apple, Dolby call this 'Right' */
+	PA_CHANNEL_POSITION_FRONT_CENTER,             /**< Apple, Dolby call this 'Center' */
+
+/** \cond fulldocs */
+	PA_CHANNEL_POSITION_LEFT = PA_CHANNEL_POSITION_FRONT_LEFT,
+	PA_CHANNEL_POSITION_RIGHT = PA_CHANNEL_POSITION_FRONT_RIGHT,
+	PA_CHANNEL_POSITION_CENTER = PA_CHANNEL_POSITION_FRONT_CENTER,
+/** \endcond */
+
+	PA_CHANNEL_POSITION_REAR_CENTER,              /**< Microsoft calls this 'Back Center', Apple calls this 'Center Surround', Dolby calls this 'Surround Rear Center' */
+	PA_CHANNEL_POSITION_REAR_LEFT,                /**< Microsoft calls this 'Back Left', Apple calls this 'Left Surround' (!), Dolby calls this 'Surround Rear Left'  */
+	PA_CHANNEL_POSITION_REAR_RIGHT,               /**< Microsoft calls this 'Back Right', Apple calls this 'Right Surround' (!), Dolby calls this 'Surround Rear Right'  */
+
+	PA_CHANNEL_POSITION_LFE,                      /**< Microsoft calls this 'Low Frequency', Apple calls this 'LFEScreen' */
+/** \cond fulldocs */
+	PA_CHANNEL_POSITION_SUBWOOFER = PA_CHANNEL_POSITION_LFE,
+/** \endcond */
+
+	PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,     /**< Apple, Dolby call this 'Left Center' */
+	PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,    /**< Apple, Dolby call this 'Right Center */
+
+	PA_CHANNEL_POSITION_SIDE_LEFT,                /**< Apple calls this 'Left Surround Direct', Dolby calls this 'Surround Left' (!) */
+	PA_CHANNEL_POSITION_SIDE_RIGHT,               /**< Apple calls this 'Right Surround Direct', Dolby calls this 'Surround Right' (!) */
+	PA_CHANNEL_POSITION_AUX0,
+	PA_CHANNEL_POSITION_AUX1,
+	PA_CHANNEL_POSITION_AUX2,
+	PA_CHANNEL_POSITION_AUX3,
+	PA_CHANNEL_POSITION_AUX4,
+	PA_CHANNEL_POSITION_AUX5,
+	PA_CHANNEL_POSITION_AUX6,
+	PA_CHANNEL_POSITION_AUX7,
+	PA_CHANNEL_POSITION_AUX8,
+	PA_CHANNEL_POSITION_AUX9,
+	PA_CHANNEL_POSITION_AUX10,
+	PA_CHANNEL_POSITION_AUX11,
+	PA_CHANNEL_POSITION_AUX12,
+	PA_CHANNEL_POSITION_AUX13,
+	PA_CHANNEL_POSITION_AUX14,
+	PA_CHANNEL_POSITION_AUX15,
+	PA_CHANNEL_POSITION_AUX16,
+	PA_CHANNEL_POSITION_AUX17,
+	PA_CHANNEL_POSITION_AUX18,
+	PA_CHANNEL_POSITION_AUX19,
+	PA_CHANNEL_POSITION_AUX20,
+	PA_CHANNEL_POSITION_AUX21,
+	PA_CHANNEL_POSITION_AUX22,
+	PA_CHANNEL_POSITION_AUX23,
+	PA_CHANNEL_POSITION_AUX24,
+	PA_CHANNEL_POSITION_AUX25,
+	PA_CHANNEL_POSITION_AUX26,
+	PA_CHANNEL_POSITION_AUX27,
+	PA_CHANNEL_POSITION_AUX28,
+	PA_CHANNEL_POSITION_AUX29,
+	PA_CHANNEL_POSITION_AUX30,
+	PA_CHANNEL_POSITION_AUX31,
+
+	PA_CHANNEL_POSITION_TOP_CENTER,               /**< Apple calls this 'Top Center Surround' */
+
+	PA_CHANNEL_POSITION_TOP_FRONT_LEFT,           /**< Apple calls this 'Vertical Height Left' */
+	PA_CHANNEL_POSITION_TOP_FRONT_RIGHT,          /**< Apple calls this 'Vertical Height Right' */
+	PA_CHANNEL_POSITION_TOP_FRONT_CENTER,         /**< Apple calls this 'Vertical Height Center' */
+
+	PA_CHANNEL_POSITION_TOP_REAR_LEFT,            /**< Microsoft and Apple call this 'Top Back Left' */
+	PA_CHANNEL_POSITION_TOP_REAR_RIGHT,           /**< Microsoft and Apple call this 'Top Back Right' */
+	PA_CHANNEL_POSITION_TOP_REAR_CENTER,          /**< Microsoft and Apple call this 'Top Back Center' */
+
+	PA_CHANNEL_POSITION_MAX
+} pa_channel_position_t;
+
+typedef struct pa_channel_map {
+	uint8_t channels;
+	pa_channel_position_t map[PA_CHANNELS_MAX];
+} pa_channel_map;
+
+static inline int pa_channels_valid(uint8_t channels)
+{
+    return channels > 0 && channels <= PA_CHANNELS_MAX;
+}
+
+static inline int pa_channel_map_valid(const pa_channel_map *map)
+{
+    unsigned c;
+    if (!pa_channels_valid(map->channels))
+        return 0;
+    for (c = 0; c < map->channels; c++)
+        if (map->map[c] < 0 || map->map[c] >= PA_CHANNEL_POSITION_MAX)
+            return 0;
+    return 1;
+}
+static inline pa_channel_map* pa_channel_map_init(pa_channel_map *m)
+{
+    unsigned c;
+    m->channels = 0;
+    for (c = 0; c < PA_CHANNELS_MAX; c++)
+        m->map[c] = PA_CHANNEL_POSITION_INVALID;
+    return m;
+}
+
+static inline pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def)
+{
+	unsigned i;
+
+	pa_assert(m);
+	pa_assert(pa_channels_valid(channels));
+	pa_assert(def < PA_CHANNEL_MAP_DEF_MAX);
+
+	pa_channel_map_init(m);
+
+	m->channels = (uint8_t) channels;
+
+	switch (def) {
+	case PA_CHANNEL_MAP_ALSA:
+            switch (channels) {
+                case 1:
+                    m->map[0] = PA_CHANNEL_POSITION_MONO;
+                    return m;
+                case 8:
+                    m->map[6] = PA_CHANNEL_POSITION_SIDE_LEFT;
+                    m->map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT;
+                    SPA_FALLTHROUGH;
+                case 6:
+                    m->map[5] = PA_CHANNEL_POSITION_LFE;
+                    SPA_FALLTHROUGH;
+                case 5:
+                    m->map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
+                    SPA_FALLTHROUGH;
+                case 4:
+                    m->map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
+                    m->map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
+                    SPA_FALLTHROUGH;
+                case 2:
+                    m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+                    m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+                    return m;
+                default:
+                    return NULL;
+            }
+	case PA_CHANNEL_MAP_AUX:
+	    for (i = 0; i < channels; i++)
+		m->map[i] = PA_CHANNEL_POSITION_AUX0 + (i & 31);
+	    return m;
+	default:
+	    break;
+	}
+	return NULL;
+}
+
+static inline pa_channel_map* pa_channel_map_init_extend(pa_channel_map *m,
+		unsigned channels, pa_channel_map_def_t def)
+{
+	pa_channel_map *r;
+	if ((r = pa_channel_map_init_auto(m, channels, def)) != NULL)
+		return r;
+	return pa_channel_map_init_auto(m, channels, PA_CHANNEL_MAP_AUX);
+}
+
+typedef uint64_t pa_channel_position_mask_t;
+
+#define PA_CHANNEL_POSITION_MASK(f) ((pa_channel_position_mask_t) (1ULL << (f)))
+
+#define PA_CHANNEL_POSITION_MASK_LEFT                                   \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT)           \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_LEFT)          \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER) \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_LEFT)          \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_LEFT)     \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_LEFT))     \
+
+#define PA_CHANNEL_POSITION_MASK_RIGHT                                  \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT)          \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_RIGHT)         \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER) \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_RIGHT)         \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_RIGHT)    \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_RIGHT))
+
+#define PA_CHANNEL_POSITION_MASK_CENTER                                 \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_CENTER)         \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_CENTER)        \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_CENTER)         \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_CENTER)   \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_CENTER))
+
+#define PA_CHANNEL_POSITION_MASK_FRONT                                  \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT)           \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT)        \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_CENTER)       \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER) \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER) \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_LEFT)     \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_RIGHT)    \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_CENTER))
+
+#define PA_CHANNEL_POSITION_MASK_REAR                                   \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_LEFT)            \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_RIGHT)         \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_REAR_CENTER)        \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_LEFT)      \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_RIGHT)     \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_CENTER))
+
+#define PA_CHANNEL_POSITION_MASK_LFE                                    \
+	PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_LFE)
+
+#define PA_CHANNEL_POSITION_MASK_HFE                                    \
+	(PA_CHANNEL_POSITION_MASK_REAR | PA_CHANNEL_POSITION_MASK_FRONT     \
+	| PA_CHANNEL_POSITION_MASK_LEFT | PA_CHANNEL_POSITION_MASK_RIGHT   \
+	| PA_CHANNEL_POSITION_MASK_CENTER)
+
+#define PA_CHANNEL_POSITION_MASK_SIDE_OR_TOP_CENTER                     \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_LEFT)            \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_SIDE_RIGHT)         \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_CENTER))
+
+#define PA_CHANNEL_POSITION_MASK_TOP                                    \
+	(PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_CENTER)           \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_LEFT)     \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_RIGHT)    \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_FRONT_CENTER)   \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_LEFT)      \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_RIGHT)     \
+	| PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_TOP_REAR_CENTER))
+
+#define PA_CHANNEL_POSITION_MASK_ALL            \
+	((pa_channel_position_mask_t) (PA_CHANNEL_POSITION_MASK(PA_CHANNEL_POSITION_MAX)-1))
+
+static const char *const pa_position_table[PA_CHANNEL_POSITION_MAX] = {
+	[PA_CHANNEL_POSITION_MONO] = "mono",
+	[PA_CHANNEL_POSITION_FRONT_CENTER] = "front-center",
+	[PA_CHANNEL_POSITION_FRONT_LEFT] = "front-left",
+	[PA_CHANNEL_POSITION_FRONT_RIGHT] = "front-right",
+	[PA_CHANNEL_POSITION_REAR_CENTER] = "rear-center",
+	[PA_CHANNEL_POSITION_REAR_LEFT] = "rear-left",
+	[PA_CHANNEL_POSITION_REAR_RIGHT] = "rear-right",
+	[PA_CHANNEL_POSITION_LFE] = "lfe",
+	[PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = "front-left-of-center",
+	[PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = "front-right-of-center",
+	[PA_CHANNEL_POSITION_SIDE_LEFT] = "side-left",
+	[PA_CHANNEL_POSITION_SIDE_RIGHT] = "side-right",
+	[PA_CHANNEL_POSITION_AUX0] = "aux0",
+	[PA_CHANNEL_POSITION_AUX1] = "aux1",
+	[PA_CHANNEL_POSITION_AUX2] = "aux2",
+	[PA_CHANNEL_POSITION_AUX3] = "aux3",
+	[PA_CHANNEL_POSITION_AUX4] = "aux4",
+	[PA_CHANNEL_POSITION_AUX5] = "aux5",
+	[PA_CHANNEL_POSITION_AUX6] = "aux6",
+	[PA_CHANNEL_POSITION_AUX7] = "aux7",
+	[PA_CHANNEL_POSITION_AUX8] = "aux8",
+	[PA_CHANNEL_POSITION_AUX9] = "aux9",
+	[PA_CHANNEL_POSITION_AUX10] = "aux10",
+	[PA_CHANNEL_POSITION_AUX11] = "aux11",
+	[PA_CHANNEL_POSITION_AUX12] = "aux12",
+	[PA_CHANNEL_POSITION_AUX13] = "aux13",
+	[PA_CHANNEL_POSITION_AUX14] = "aux14",
+	[PA_CHANNEL_POSITION_AUX15] = "aux15",
+	[PA_CHANNEL_POSITION_AUX16] = "aux16",
+	[PA_CHANNEL_POSITION_AUX17] = "aux17",
+	[PA_CHANNEL_POSITION_AUX18] = "aux18",
+	[PA_CHANNEL_POSITION_AUX19] = "aux19",
+	[PA_CHANNEL_POSITION_AUX20] = "aux20",
+	[PA_CHANNEL_POSITION_AUX21] = "aux21",
+	[PA_CHANNEL_POSITION_AUX22] = "aux22",
+	[PA_CHANNEL_POSITION_AUX23] = "aux23",
+	[PA_CHANNEL_POSITION_AUX24] = "aux24",
+	[PA_CHANNEL_POSITION_AUX25] = "aux25",
+	[PA_CHANNEL_POSITION_AUX26] = "aux26",
+	[PA_CHANNEL_POSITION_AUX27] = "aux27",
+	[PA_CHANNEL_POSITION_AUX28] = "aux28",
+	[PA_CHANNEL_POSITION_AUX29] = "aux29",
+	[PA_CHANNEL_POSITION_AUX30] = "aux30",
+	[PA_CHANNEL_POSITION_AUX31] = "aux31",
+
+	[PA_CHANNEL_POSITION_TOP_CENTER] = "top-center",
+	[PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = "top-front-center",
+	[PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = "top-front-left",
+	[PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = "top-front-right",
+	[PA_CHANNEL_POSITION_TOP_REAR_CENTER] = "top-rear-center",
+	[PA_CHANNEL_POSITION_TOP_REAR_LEFT] = "top-rear-left",
+	[PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = "top-rear-right"
+};
+
+static inline pa_channel_position_t pa_channel_position_from_string(const char *p)
+{
+    pa_channel_position_t i;
+    /* Some special aliases */
+    if (pa_streq(p, "left"))
+        return PA_CHANNEL_POSITION_LEFT;
+    else if (pa_streq(p, "right"))
+        return PA_CHANNEL_POSITION_RIGHT;
+    else if (pa_streq(p, "center"))
+        return PA_CHANNEL_POSITION_CENTER;
+    else if (pa_streq(p, "subwoofer"))
+        return PA_CHANNEL_POSITION_SUBWOOFER;
+    for (i = 0; i < PA_CHANNEL_POSITION_MAX; i++)
+        if (pa_streq(p, pa_position_table[i]))
+            return i;
+    return PA_CHANNEL_POSITION_INVALID;
+}
+
+static inline pa_channel_map *pa_channel_map_parse(pa_channel_map *rmap, const char *s)
+{
+    const char *state;
+    pa_channel_map map;
+    char *p;
+    pa_channel_map_init(&map);
+    if (pa_streq(s, "stereo")) {
+        map.channels = 2;
+        map.map[0] = PA_CHANNEL_POSITION_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_RIGHT;
+        goto finish;
+    } else if (pa_streq(s, "surround-21")) {
+        map.channels = 3;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_LFE;
+        goto finish;
+    } else if (pa_streq(s, "surround-40")) {
+        map.channels = 4;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
+        map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
+        goto finish;
+    } else if (pa_streq(s, "surround-41")) {
+        map.channels = 5;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
+        map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
+        map.map[4] = PA_CHANNEL_POSITION_LFE;
+        goto finish;
+    } else if (pa_streq(s, "surround-50")) {
+        map.channels = 5;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
+        map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
+        map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
+        goto finish;
+    } else if (pa_streq(s, "surround-51")) {
+        map.channels = 6;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
+        map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
+        map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
+        map.map[5] = PA_CHANNEL_POSITION_LFE;
+        goto finish;
+    } else if (pa_streq(s, "surround-71")) {
+        map.channels = 8;
+        map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
+        map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
+        map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
+        map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
+        map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
+        map.map[5] = PA_CHANNEL_POSITION_LFE;
+        map.map[6] = PA_CHANNEL_POSITION_SIDE_LEFT;
+        map.map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT;
+        goto finish;
+    }
+    state = NULL;
+    map.channels = 0;
+    while ((p = pa_split(s, ",", &state))) {
+        pa_channel_position_t f;
+
+        if (map.channels >= PA_CHANNELS_MAX) {
+            pa_xfree(p);
+            return NULL;
+        }
+        if ((f = pa_channel_position_from_string(p)) == PA_CHANNEL_POSITION_INVALID) {
+            pa_xfree(p);
+            return NULL;
+        }
+        map.map[map.channels++] = f;
+        pa_xfree(p);
+    }
+finish:
+    if (!pa_channel_map_valid(&map))
+        return NULL;
+    *rmap = map;
+    return rmap;
+}
+
+static inline const char* pa_channel_position_to_string(pa_channel_position_t pos) {
+
+    if (pos < 0 || pos >= PA_CHANNEL_POSITION_MAX)
+        return NULL;
+    return pa_position_table[pos];
+}
+
+static inline int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b)
+{
+    unsigned c;
+    if (PA_UNLIKELY(a == b))
+        return 1;
+    if (a->channels != b->channels)
+        return 0;
+    for (c = 0; c < a->channels; c++)
+        if (a->map[c] != b->map[c])
+            return 0;
+    return 1;
+}
+
+static inline char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) {
+    unsigned channel;
+    bool first = true;
+    char *e;
+    if (!pa_channel_map_valid(map)) {
+        pa_snprintf(s, l, "%s", _("(invalid)"));
+        return s;
+    }
+    *(e = s) = 0;
+    for (channel = 0; channel < map->channels && l > 1; channel++) {
+        l -= pa_snprintf(e, l, "%s%s",
+                      first ? "" : ",",
+                      pa_channel_position_to_string(map->map[channel]));
+        e = strchr(e, 0);
+        first = false;
+    }
+
+    return s;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PULSE_CHANNELMAP_H */