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json: add helper function to parse channel positions

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Use the helper instead of duplicating the same code.

Also add some helpers to parse a json array of uint32_t

Move some functions to convert between type name and id.
This commit is contained in:
Wim Taymans 2024-09-18 09:54:34 +02:00
parent 911a601b95
commit e2991f6398
34 changed files with 256 additions and 791 deletions
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43
src/modules/module-example-source.c
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@ -24,6 +24,7 @@
#include <spa/pod/builder.h>
#include <spa/param/audio/format-utils.h>
#include <spa/param/audio/raw.h>
#include <spa/param/audio/raw-json.h>
#include <pipewire/impl.h>
#include <pipewire/i18n.h>
@ -278,41 +279,6 @@ static const struct pw_impl_module_events module_events = {
.destroy = module_destroy,
};
static inline uint32_t format_from_name(const char *name, size_t len)
{
int i;
for (i = 0; spa_type_audio_format[i].name; i++) {
if (strncmp(name, spa_debug_type_short_name(spa_type_audio_format[i].name), len) == 0)
return spa_type_audio_format[i].type;
}
return SPA_AUDIO_FORMAT_UNKNOWN;
}
static uint32_t channel_from_name(const char *name)
{
int i;
for (i = 0; spa_type_audio_channel[i].name; i++) {
if (spa_streq(name, spa_debug_type_short_name(spa_type_audio_channel[i].name)))
return spa_type_audio_channel[i].type;
}
return SPA_AUDIO_CHANNEL_UNKNOWN;
}
static void parse_position(struct spa_audio_info_raw *info, const char *val, size_t len)
{
struct spa_json it[1];
char v[256];
if (spa_json_begin_array_relax(&it[0], val, len) <= 0)
return;
info->channels = 0;
while (spa_json_get_string(&it[0], v, sizeof(v)) > 0 &&
info->channels < SPA_AUDIO_MAX_CHANNELS) {
info->position[info->channels++] = channel_from_name(v);
}
}
static void parse_audio_info(const struct pw_properties *props, struct spa_audio_info_raw *info)
{
const char *str;
@ -320,7 +286,7 @@ static void parse_audio_info(const struct pw_properties *props, struct spa_audio
spa_zero(*info);
if ((str = pw_properties_get(props, PW_KEY_AUDIO_FORMAT)) == NULL)
str = DEFAULT_FORMAT;
info->format = format_from_name(str, strlen(str));
info->format = spa_type_audio_format_from_short_name(str);
info->rate = pw_properties_get_uint32(props, PW_KEY_AUDIO_RATE, info->rate);
if (info->rate == 0)
@ -329,9 +295,10 @@ static void parse_audio_info(const struct pw_properties *props, struct spa_audio
info->channels = pw_properties_get_uint32(props, PW_KEY_AUDIO_CHANNELS, info->channels);
info->channels = SPA_MIN(info->channels, SPA_AUDIO_MAX_CHANNELS);
if ((str = pw_properties_get(props, SPA_KEY_AUDIO_POSITION)) != NULL)
parse_position(info, str, strlen(str));
spa_audio_parse_position(str, strlen(str), info->position, &info->channels);
if (info->channels == 0)
parse_position(info, DEFAULT_POSITION, strlen(DEFAULT_POSITION));
spa_audio_parse_position(DEFAULT_POSITION, strlen(DEFAULT_POSITION),
info->position, &info->channels);
}
static int calc_frame_size(const struct spa_audio_info_raw *info)