diff options
Diffstat (limited to 'spa/plugins/bluez5/media-codecs.c')
| -rw-r--r-- | spa/plugins/bluez5/media-codecs.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/spa/plugins/bluez5/media-codecs.c b/spa/plugins/bluez5/media-codecs.c new file mode 100644 index 0000000..28445fc --- /dev/null +++ b/spa/plugins/bluez5/media-codecs.c @@ -0,0 +1,212 @@ +/* + * BlueALSA - bluez-a2dp.c + * Copyright (c) 2016-2017 Arkadiusz Bokowy + * + * This file is a part of bluez-alsa. + * + * This project is licensed under the terms of the MIT license. + * + */ + +#include <spa/utils/string.h> + +#include "media-codecs.h" + +int media_codec_select_config(const struct media_codec_config configs[], size_t n, + uint32_t cap, int preferred_value) +{ + size_t i; + int *scores, res; + unsigned int max_priority; + + if (n == 0) + return -EINVAL; + + scores = calloc(n, sizeof(int)); + if (scores == NULL) + return -errno; + + max_priority = configs[0].priority; + for (i = 1; i < n; ++i) { + if (configs[i].priority > max_priority) + max_priority = configs[i].priority; + } + + for (i = 0; i < n; ++i) { + if (!(configs[i].config & cap)) { + scores[i] = -1; + continue; + } + if (configs[i].value == preferred_value) + scores[i] = 100 * (max_priority + 1); + else if (configs[i].value > preferred_value) + scores[i] = 10 * (max_priority + 1); + else + scores[i] = 1; + + scores[i] *= configs[i].priority + 1; + } + + res = 0; + for (i = 1; i < n; ++i) { + if (scores[i] > scores[res]) + res = i; + } + + if (scores[res] < 0) + res = -EINVAL; + + free(scores); + return res; +} + +bool media_codec_check_caps(const struct media_codec *codec, unsigned int codec_id, + const void *caps, size_t caps_size, + const struct media_codec_audio_info *info, + const struct spa_dict *global_settings) +{ + uint8_t config[A2DP_MAX_CAPS_SIZE]; + int res; + + if (codec_id != codec->codec_id) + return false; + + if (caps == NULL) + return false; + + res = codec->select_config(codec, 0, caps, caps_size, info, global_settings, config); + if (res < 0) + return false; + + if (codec->bap) + return true; + else + return ((size_t)res == caps_size); +} + +#ifdef CODEC_PLUGIN + +struct impl { + struct spa_handle handle; + struct spa_bluez5_codec_a2dp bluez5_codec_a2dp; +}; + +static int +impl_get_interface(struct spa_handle *handle, const char *type, void **interface) +{ + struct impl *this; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + spa_return_val_if_fail(interface != NULL, -EINVAL); + + this = (struct impl *) handle; + + if (spa_streq(type, SPA_TYPE_INTERFACE_Bluez5CodecMedia)) + *interface = &this->bluez5_codec_a2dp; + else + return -ENOENT; + + return 0; +} + +static int +impl_clear(struct spa_handle *handle) +{ + spa_return_val_if_fail(handle != NULL, -EINVAL); + return 0; +} + +static size_t +impl_get_size(const struct spa_handle_factory *factory, const struct spa_dict *params) +{ + return sizeof(struct impl); +} + +static int +impl_init(const struct spa_handle_factory *factory, + struct spa_handle *handle, + const struct spa_dict *info, + const struct spa_support *support, + uint32_t n_support) +{ + struct impl *this; + + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(handle != NULL, -EINVAL); + + handle->get_interface = impl_get_interface; + handle->clear = impl_clear; + + this = (struct impl *) handle; + + this->bluez5_codec_a2dp.codecs = codec_plugin_media_codecs; + this->bluez5_codec_a2dp.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Bluez5CodecMedia, + SPA_VERSION_BLUEZ5_CODEC_MEDIA, + NULL, + this); + + return 0; +} + +static const struct spa_interface_info impl_interfaces[] = { + {SPA_TYPE_INTERFACE_Bluez5CodecMedia,}, +}; + +static int +impl_enum_interface_info(const struct spa_handle_factory *factory, + const struct spa_interface_info **info, + uint32_t *index) +{ + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(info != NULL, -EINVAL); + spa_return_val_if_fail(index != NULL, -EINVAL); + + switch (*index) { + case 0: + *info = &impl_interfaces[*index]; + break; + default: + return 0; + } + (*index)++; + + return 1; +} + +static const struct spa_dict_item handle_info_items[] = { + { SPA_KEY_FACTORY_DESCRIPTION, "Bluetooth codec plugin" }, +}; + +static const struct spa_dict handle_info = SPA_DICT_INIT_ARRAY(handle_info_items); + +static struct spa_handle_factory handle_factory = { + SPA_VERSION_HANDLE_FACTORY, + NULL, + &handle_info, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; + +SPA_EXPORT +int spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t *index) +{ + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(index != NULL, -EINVAL); + + if (handle_factory.name == NULL) + handle_factory.name = codec_plugin_factory_name; + + switch (*index) { + case 0: + *factory = &handle_factory; + break; + default: + return 0; + } + (*index)++; + return 1; +} + +#endif |