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spa: improve info parsing

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Make info parsing a bit easier to read by assigning the key and
value to temporary variables.
Improve the parsing of channelmap using json parser to make it
support more cases.
Add a unit test for channelmap parsing options.
This commit is contained in:
Wim Taymans 2021-03-18 18:40:56 +01:00
parent 972cf8d657
commit 8e590df92f
6 changed files with 138 additions and 82 deletions
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54
spa/plugins/audioconvert/channelmix.c
View file

@ -31,6 +31,7 @@
#include <spa/support/cpu.h>
#include <spa/utils/list.h>
#include <spa/utils/names.h>
#include <spa/utils/json.h>
#include <spa/node/keys.h>
#include <spa/node/node.h>
#include <spa/node/io.h>
@ -1235,6 +1236,24 @@ static uint32_t channel_from_name(const char *name, size_t len)
return SPA_AUDIO_CHANNEL_UNKNOWN;
}
static inline uint32_t parse_position(uint32_t *pos, const char *val, size_t len)
{
struct spa_json it[2];
char v[256];
int l;
uint32_t i = 0;
spa_json_init(&it[0], val, len);
if (spa_json_enter_array(&it[0], &it[1]) <= 0)
spa_json_init(&it[1], val, len);
while ((l = spa_json_get_string(&it[1], v, sizeof(v))) > 0 &&
i < SPA_AUDIO_MAX_CHANNELS) {
pos[i++] = channel_from_name(v, l);
}
return i;
}
static int
impl_init(const struct spa_handle_factory *factory,
struct spa_handle *handle,
@ -1244,7 +1263,7 @@ impl_init(const struct spa_handle_factory *factory,
{
struct impl *this;
struct port *port;
const char *str;
uint32_t i;
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(handle != NULL, -EINVAL);
@ -1264,29 +1283,22 @@ impl_init(const struct spa_handle_factory *factory,
props_reset(&this->props);
if (info != NULL) {
if ((str = spa_dict_lookup(info, "channelmix.normalize")) != NULL &&
(strcmp(str, "true") == 0 || atoi(str) != 0))
for (i = 0; info && i < info->n_items; i++) {
const char *k = info->items[i].key;
const char *s = info->items[i].value;
if (strcmp(k, "channelmix.normalize") == 0 &&
(strcmp(s, "true") == 0 || atoi(s) != 0))
this->mix.options |= CHANNELMIX_OPTION_NORMALIZE;
if ((str = spa_dict_lookup(info, "channelmix.mix-lfe")) != NULL &&
(strcmp(str, "true") == 0 || atoi(str) != 0))
if (strcmp(k, "channelmix.mix-lfe") == 0 &&
(strcmp(s, "true") == 0 || atoi(s) != 0))
this->mix.options |= CHANNELMIX_OPTION_MIX_LFE;
if ((str = spa_dict_lookup(info, "channelmix.upmix")) != NULL &&
(strcmp(str, "true") == 0 || atoi(str) != 0))
if (strcmp(k, "channelmix.upmix") == 0 &&
(strcmp(s, "true") == 0 || atoi(s) != 0))
this->mix.options |= CHANNELMIX_OPTION_UPMIX;
if ((str = spa_dict_lookup(info, "channelmix.lfe-cutoff")) != NULL)
this->mix.lfe_cutoff = atoi(str);
if ((str = spa_dict_lookup(info, SPA_KEY_AUDIO_POSITION)) != NULL) {
size_t len;
const char *p = str;
while (*p && this->props.n_channels < SPA_AUDIO_MAX_CHANNELS) {
if ((len = strcspn(p, ",")) == 0)
break;
this->props.channel_map[this->props.n_channels++] =
channel_from_name(p, len);
p += len + strspn(p+len, ",");
}
}
if (strcmp(k, "channelmix.lfe-cutoff") == 0)
this->mix.lfe_cutoff = atoi(s);
if (strcmp(k, SPA_KEY_AUDIO_POSITION) == 0)
this->props.n_channels = parse_position(this->props.channel_map, s, strlen(s));
}
this->props.n_channel_volumes = this->props.n_channels;