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format: Expose pa_format_info convenience getters in API

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We move over helper functions to get rate, channels, channel map and
sample format (if PCM) in the public API, so users of the extended API
are more easily able to pull out these values from pa_format_info.
This commit is contained in:
Arun Raghavan 2018-05-26 08:52:52 +05:30 • committed by Arun Raghavan
parent 1f45082c68
commit 6d7a266e0e
5 changed files with 113 additions and 109 deletions
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89
src/pulse/format.c
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@ -515,6 +515,95 @@ void pa_format_info_free_string_array(char **values, int n_values) {
pa_xfree(values);
}
int pa_format_info_get_sample_format(const pa_format_info *f, pa_sample_format_t *sf) {
int r;
char *sf_str;
pa_sample_format_t sf_local;
pa_assert(f);
pa_assert(sf);
r = pa_format_info_get_prop_string(f, PA_PROP_FORMAT_SAMPLE_FORMAT, &sf_str);
if (r < 0)
return r;
sf_local = pa_parse_sample_format(sf_str);
pa_xfree(sf_str);
if (!pa_sample_format_valid(sf_local)) {
pa_log_debug("Invalid sample format.");
return -PA_ERR_INVALID;
}
*sf = sf_local;
return 0;
}
int pa_format_info_get_rate(const pa_format_info *f, uint32_t *rate) {
int r;
int rate_local;
pa_assert(f);
pa_assert(rate);
r = pa_format_info_get_prop_int(f, PA_PROP_FORMAT_RATE, &rate_local);
if (r < 0)
return r;
if (!pa_sample_rate_valid(rate_local)) {
pa_log_debug("Invalid sample rate: %i", rate_local);
return -PA_ERR_INVALID;
}
*rate = rate_local;
return 0;
}
int pa_format_info_get_channels(const pa_format_info *f, uint8_t *channels) {
int r;
int channels_local;
pa_assert(f);
pa_assert(channels);
r = pa_format_info_get_prop_int(f, PA_PROP_FORMAT_CHANNELS, &channels_local);
if (r < 0)
return r;
if (!pa_channels_valid(channels_local)) {
pa_log_debug("Invalid channel count: %i", channels_local);
return -PA_ERR_INVALID;
}
*channels = channels_local;
return 0;
}
int pa_format_info_get_channel_map(const pa_format_info *f, pa_channel_map *map) {
int r;
char *map_str;
pa_assert(f);
pa_assert(map);
r = pa_format_info_get_prop_string(f, PA_PROP_FORMAT_CHANNEL_MAP, &map_str);
if (r < 0)
return r;
map = pa_channel_map_parse(map, map_str);
pa_xfree(map_str);
if (!map) {
pa_log_debug("Failed to parse channel map.");
return -PA_ERR_INVALID;
}
return 0;
}
void pa_format_info_set_sample_format(pa_format_info *f, pa_sample_format_t sf) {
pa_format_info_set_prop_string(f, PA_PROP_FORMAT_SAMPLE_FORMAT, pa_sample_format_to_string(sf));
}