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Diffstat (limited to 'spa/plugins/alsa/acp/dynarray.h')
| -rw-r--r-- | spa/plugins/alsa/acp/dynarray.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/spa/plugins/alsa/acp/dynarray.h b/spa/plugins/alsa/acp/dynarray.h new file mode 100644 index 0000000..762c84c --- /dev/null +++ b/spa/plugins/alsa/acp/dynarray.h @@ -0,0 +1,159 @@ +/* ALSA Card Profile + * + * Copyright © 2020 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#ifndef PA_DYNARRAY_H +#define PA_DYNARRAY_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include "array.h" + +typedef struct pa_dynarray_item { + void *ptr; +} pa_dynarray_item; + +typedef struct pa_dynarray { + pa_array array; + pa_free_cb_t free_cb; +} pa_dynarray; + +static inline void pa_dynarray_init(pa_dynarray *array, pa_free_cb_t free_cb) +{ + pa_array_init(&array->array, 16); + array->free_cb = free_cb; +} + +static inline void pa_dynarray_item_free(pa_dynarray *array, pa_dynarray_item *item) +{ + if (array->free_cb) + array->free_cb(item->ptr); +} + +static inline void pa_dynarray_clear(pa_dynarray *array) +{ + pa_dynarray_item *item; + pa_array_for_each(item, &array->array) + pa_dynarray_item_free(array, item); + pa_array_clear(&array->array); +} + +static inline pa_dynarray* pa_dynarray_new(pa_free_cb_t free_cb) +{ + pa_dynarray *d = calloc(1, sizeof(*d)); + pa_dynarray_init(d, free_cb); + return d; +} + +static inline void pa_dynarray_free(pa_dynarray *array) +{ + pa_dynarray_clear(array); + free(array); +} + +static inline void pa_dynarray_append(pa_dynarray *array, void *p) +{ + pa_dynarray_item *item = pa_array_add(&array->array, sizeof(*item)); + item->ptr = p; +} + +static inline pa_dynarray_item *pa_dynarray_find_item(pa_dynarray *array, void *p) +{ + pa_dynarray_item *item; + pa_array_for_each(item, &array->array) { + if (item->ptr == p) + return item; + } + return NULL; +} + +static inline pa_dynarray_item *pa_dynarray_get_item(pa_dynarray *array, unsigned i) +{ + if (!pa_array_check_index(&array->array, i, pa_dynarray_item)) + return NULL; + return pa_array_get_unchecked(&array->array, i, pa_dynarray_item); +} + +static inline void *pa_dynarray_get(pa_dynarray *array, unsigned i) +{ + pa_dynarray_item *item = pa_dynarray_get_item(array, i); + if (item == NULL) + return NULL; + return item->ptr; +} + +static inline int pa_dynarray_insert_by_index(pa_dynarray *array, void *p, unsigned i) +{ + unsigned j, len; + pa_dynarray_item *item; + + len = pa_array_get_len(&array->array, pa_dynarray_item); + + if (i > len) + return -EINVAL; + + item = pa_array_add(&array->array, sizeof(*item)); + for (j = len; j > i; j--) { + item--; + item[1].ptr = item[0].ptr; + } + item->ptr = p; + return 0; +} + +static inline int pa_dynarray_remove_by_index(pa_dynarray *array, unsigned i) +{ + pa_dynarray_item *item = pa_dynarray_get_item(array, i); + if (item == NULL) + return -ENOENT; + pa_dynarray_item_free(array, item); + pa_array_remove(&array->array, item); + return 0; +} + +static inline int pa_dynarray_remove_by_data(pa_dynarray *array, void *p) +{ + pa_dynarray_item *item = pa_dynarray_find_item(array, p); + if (item == NULL) + return -ENOENT; + pa_dynarray_item_free(array, item); + pa_array_remove(&array->array, item); + return 0; +} + +static inline unsigned pa_dynarray_size(pa_dynarray *array) +{ + return pa_array_get_len(&array->array, pa_dynarray_item); +} + +#define PA_DYNARRAY_FOREACH(elem, array, idx) \ + for ((idx) = 0; ((elem) = pa_dynarray_get(array, idx)); (idx)++) + + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* PA_DYNARRAY_H */ |