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bluez5: implement validate_config for AAC

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Allows bailing out earlier on invalid config, and setting transport
channel info.
This commit is contained in:
Pauli Virtanen 2021-09-30 21:35:27 +03:00 • committed by P V
parent 58c7caf1bc
commit 3092e4a7be
1 changed files with 45 additions and 0 deletions
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45
spa/plugins/bluez5/a2dp-codec-aac.c
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@ -239,6 +239,50 @@ static int codec_enum_config(const struct a2dp_codec *codec,
return *param == NULL ? -EIO : 1;
}
static int codec_validate_config(const struct a2dp_codec *codec, uint32_t flags,
const void *caps, size_t caps_size,
struct spa_audio_info *info)
{
a2dp_aac_t conf;
size_t j;
if (caps == NULL || caps_size < sizeof(conf))
return -EINVAL;
memcpy(&conf, caps, sizeof(conf));
spa_zero(*info);
info->media_type = SPA_MEDIA_TYPE_audio;
info->media_subtype = SPA_MEDIA_SUBTYPE_raw;
info->info.raw.format = SPA_AUDIO_FORMAT_S16;
if (conf.object_type != AAC_OBJECT_TYPE_MPEG2_AAC_LC &&
conf.object_type != AAC_OBJECT_TYPE_MPEG4_AAC_LC)
return -EINVAL;
for (j = 0; j < SPA_N_ELEMENTS(aac_frequencies); ++j) {
if (AAC_GET_FREQUENCY(conf) & aac_frequencies[j].config) {
info->info.raw.rate = aac_frequencies[j].value;
break;
}
}
if (j == SPA_N_ELEMENTS(aac_frequencies))
return -EINVAL;
if (conf.channels & AAC_CHANNELS_2) {
info->info.raw.channels = 2;
info->info.raw.position[0] = SPA_AUDIO_CHANNEL_FL;
info->info.raw.position[1] = SPA_AUDIO_CHANNEL_FR;
} else if (conf.channels & AAC_CHANNELS_1) {
info->info.raw.channels = 1;
info->info.raw.position[0] = SPA_AUDIO_CHANNEL_MONO;
} else {
return -EINVAL;
}
return 0;
}
static void *codec_init_props(const struct a2dp_codec *codec, const struct spa_dict *settings)
{
struct props *p = calloc(1, sizeof(struct props));
@ -495,6 +539,7 @@ const struct a2dp_codec a2dp_codec_aac = {
.fill_caps = codec_fill_caps,
.select_config = codec_select_config,
.enum_config = codec_enum_config,
.validate_config = codec_validate_config,
.init_props = codec_init_props,
.clear_props = codec_clear_props,
.init = codec_init,