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pulse: clamp channel numbers to right values

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When converting between pipewire and pulse channelmaps, make sure we
clamp the channel numbers to the the right limit.
This commit is contained in:
Wim Taymans 2025-04-04 15:13:47 +02:00
parent 722776cf65
commit a9f12537d1
4 changed files with 20 additions and 18 deletions
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17
src/modules/module-protocol-pulse/format.c
View file

@ -348,14 +348,15 @@ uint32_t channel_paname2id(const char *name, size_t size)
void channel_map_to_positions(const struct channel_map *map, uint32_t *pos)
{
int i;
for (i = 0; i < map->channels; i++)
uint32_t i, channels = SPA_MIN(map->channels, SPA_AUDIO_MAX_CHANNELS);
for (i = 0; i < channels; i++)
pos[i] = map->map[i];
}
void positions_to_channel_map(const uint32_t *pos, uint32_t channels, struct channel_map *map)
{
uint32_t i;
channels = SPA_MIN(channels, CHANNELS_MAX);
for (i = 0; i < channels; i++)
map->map[i] = pos[i];
map->channels = channels;
@ -430,7 +431,7 @@ void channel_map_parse(const char *str, struct channel_map *map)
};
} else {
channels = map->channels = 0;
while (*p && channels < SPA_AUDIO_MAX_CHANNELS) {
while (*p && channels < CHANNELS_MAX) {
uint32_t chname;
if ((len = strcspn(p, ",")) == 0)
@ -576,11 +577,11 @@ int format_parse_param(const struct spa_pod *param, bool collect,
if (info.info.raw.rate)
ss->rate = info.info.raw.rate;
if (info.info.raw.channels)
ss->channels = info.info.raw.channels;
ss->channels = SPA_MIN(info.info.raw.channels, CHANNELS_MAX);
}
if (map) {
if (info.info.raw.channels) {
map->channels = info.info.raw.channels;
map->channels = SPA_MIN(info.info.raw.channels, CHANNELS_MAX);
for (i = 0; i < map->channels; i++)
map->map[i] = info.info.raw.position[i];
}
@ -654,13 +655,13 @@ int format_info_from_spec(struct format_info *info, const struct sample_spec *ss
pw_properties_setf(info->props, "format.channels", "%d", ss->channels);
if (map && map->channels == ss->channels) {
char chmap[1024] = "";
int i, o, r;
uint32_t aux = 0;
int r;
uint32_t aux = 0, i, o;
for (i = 0, o = 0; i < map->channels; i++) {
r = snprintf(chmap+o, sizeof(chmap)-o, "%s%s", i == 0 ? "" : ",",
channel_id2paname(map->map[i], &aux));
if (r < 0 || o + r >= (int)sizeof(chmap))
if (r < 0 || o + r >= sizeof(chmap))
return -ENOSPC;
o += r;
}

4
src/modules/module-protocol-pulse/module.c
View file

@ -204,7 +204,7 @@ int module_args_to_audioinfo_keys(struct impl *impl, struct pw_properties *props
}
if (key_channels && (str = pw_properties_get(props, key_channels)) != NULL) {
info->channels = pw_properties_parse_int(str);
if (info->channels == 0 || info->channels > SPA_AUDIO_MAX_CHANNELS) {
if (info->channels == 0 || info->channels > CHANNELS_MAX) {
pw_log_error("invalid %s '%s'", key_channels, str);
return -EINVAL;
}
@ -214,7 +214,7 @@ int module_args_to_audioinfo_keys(struct impl *impl, struct pw_properties *props
struct channel_map map;
channel_map_parse(str, &map);
if (map.channels == 0 || map.channels > SPA_AUDIO_MAX_CHANNELS) {
if (map.channels == 0 || map.channels > CHANNELS_MAX) {
pw_log_error("invalid %s '%s'", key_channel_map, str);
return -EINVAL;
}

6
src/modules/module-protocol-pulse/volume.c
View file

@ -53,7 +53,7 @@ int volume_parse_param(const struct spa_pod *param, struct volume_info *info, bo
if (monitor)
continue;
info->volume.channels = spa_pod_copy_array(&prop->value, SPA_TYPE_Float,
info->volume.values, SPA_AUDIO_MAX_CHANNELS);
info->volume.values, CHANNELS_MAX);
SPA_FLAG_UPDATE(info->flags, VOLUME_HW_VOLUME,
prop->flags & SPA_POD_PROP_FLAG_HARDWARE);
break;
@ -68,7 +68,7 @@ int volume_parse_param(const struct spa_pod *param, struct volume_info *info, bo
if (!monitor)
continue;
info->volume.channels = spa_pod_copy_array(&prop->value, SPA_TYPE_Float,
info->volume.values, SPA_AUDIO_MAX_CHANNELS);
info->volume.values, CHANNELS_MAX);
SPA_FLAG_CLEAR(info->flags, VOLUME_HW_VOLUME);
break;
case SPA_PROP_volumeBase:
@ -84,7 +84,7 @@ int volume_parse_param(const struct spa_pod *param, struct volume_info *info, bo
}
case SPA_PROP_channelMap:
info->map.channels = spa_pod_copy_array(&prop->value, SPA_TYPE_Id,
info->map.map, SPA_AUDIO_MAX_CHANNELS);
info->map.map, CHANNELS_MAX);
break;
default:
break;

11
src/modules/module-pulse-tunnel.c
View file

@ -298,7 +298,7 @@ static void stream_param_changed(void *d, uint32_t id, const struct spa_pod *par
if ((n = spa_pod_copy_array(&prop->value, SPA_TYPE_Float,
vols, SPA_AUDIO_MAX_CHANNELS)) > 0) {
volume.channels = n;
volume.channels = SPA_MIN(PA_CHANNELS_MAX, n);
for (n = 0; n < volume.channels; n++)
volume.values[n] = pa_sw_volume_from_linear(vols[n]);
@ -834,11 +834,12 @@ do_stream_sync_volumes(struct spa_loop *loop,
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buf, sizeof(buf));
struct spa_pod_frame f[1];
struct spa_pod *param;
uint32_t i;
uint32_t i, channels;
float vols[SPA_AUDIO_MAX_CHANNELS];
float soft_vols[SPA_AUDIO_MAX_CHANNELS];
for (i = 0; i < impl->volume.channels; i++) {
channels = SPA_MIN(impl->volume.channels, SPA_AUDIO_MAX_CHANNELS);
for (i = 0; i < channels; i++) {
vols[i] = (float)pa_sw_volume_to_linear(impl->volume.values[i]);
soft_vols[i] = 1.0f;
}
@ -851,10 +852,10 @@ do_stream_sync_volumes(struct spa_loop *loop,
spa_pod_builder_prop(&b, SPA_PROP_channelVolumes, 0);
spa_pod_builder_array(&b, sizeof(float), SPA_TYPE_Float,
impl->volume.channels, vols);
channels, vols);
spa_pod_builder_prop(&b, SPA_PROP_softVolumes, 0);
spa_pod_builder_array(&b, sizeof(float), SPA_TYPE_Float,
impl->volume.channels, soft_vols);
channels, soft_vols);
param = spa_pod_builder_pop(&b, &f[0]);
pw_stream_set_param(impl->stream, SPA_PARAM_Props, param);