diff options
Diffstat (limited to 'pjmedia/src/pjmedia/converter.c')
| -rw-r--r-- | pjmedia/src/pjmedia/converter.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/pjmedia/src/pjmedia/converter.c b/pjmedia/src/pjmedia/converter.c new file mode 100644 index 0000000..50fbcc8 --- /dev/null +++ b/pjmedia/src/pjmedia/converter.c @@ -0,0 +1,178 @@ +/* $Id: converter.c 4087 2012-04-26 03:39:24Z ming $ */ +/* + * Copyright (C) 2010-2011 Teluu Inc. (http://www.teluu.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <pjmedia/converter.h> +#include <pj/assert.h> +#include <pj/errno.h> + +#define THIS_FILE "converter.c" + +struct pjmedia_converter_mgr +{ + pjmedia_converter_factory factory_list; +}; + +static pjmedia_converter_mgr *converter_manager_instance; + +#if PJMEDIA_HAS_LIBSWSCALE && PJMEDIA_HAS_LIBAVUTIL +PJ_DECL(pj_status_t) +pjmedia_libswscale_converter_init(pjmedia_converter_mgr *mgr); +#endif + + +PJ_DEF(pj_status_t) pjmedia_converter_mgr_create(pj_pool_t *pool, + pjmedia_converter_mgr **p_mgr) +{ + pjmedia_converter_mgr *mgr; + pj_status_t status = PJ_SUCCESS; + + mgr = PJ_POOL_ALLOC_T(pool, pjmedia_converter_mgr); + pj_list_init(&mgr->factory_list); + + if (!converter_manager_instance) + converter_manager_instance = mgr; + +#if PJMEDIA_HAS_LIBSWSCALE && PJMEDIA_HAS_LIBAVUTIL + status = pjmedia_libswscale_converter_init(mgr); + if (status != PJ_SUCCESS) { + PJ_PERROR(4,(THIS_FILE, status, + "Error initializing libswscale converter")); + } +#endif + + if (p_mgr) + *p_mgr = mgr; + + return PJ_SUCCESS; +} + +PJ_DEF(pjmedia_converter_mgr*) pjmedia_converter_mgr_instance(void) +{ + pj_assert(converter_manager_instance != NULL); + return converter_manager_instance; +} + +PJ_DEF(void) pjmedia_converter_mgr_set_instance(pjmedia_converter_mgr *mgr) +{ + converter_manager_instance = mgr; +} + +PJ_DEF(void) pjmedia_converter_mgr_destroy(pjmedia_converter_mgr *mgr) +{ + pjmedia_converter_factory *f; + + if (!mgr) mgr = pjmedia_converter_mgr_instance(); + + PJ_ASSERT_ON_FAIL(mgr != NULL, return); + + f = mgr->factory_list.next; + while (f != &mgr->factory_list) { + pjmedia_converter_factory *next = f->next; + pj_list_erase(f); + (*f->op->destroy_factory)(f); + f = next; + } + + if (converter_manager_instance == mgr) + converter_manager_instance = NULL; +} + +PJ_DEF(pj_status_t) +pjmedia_converter_mgr_register_factory(pjmedia_converter_mgr *mgr, + pjmedia_converter_factory *factory) +{ + pjmedia_converter_factory *pf; + + if (!mgr) mgr = pjmedia_converter_mgr_instance(); + + PJ_ASSERT_RETURN(mgr != NULL, PJ_EINVAL); + + PJ_ASSERT_RETURN(!pj_list_find_node(&mgr->factory_list, factory), + PJ_EEXISTS); + + pf = mgr->factory_list.next; + while (pf != &mgr->factory_list) { + if (pf->priority > factory->priority) + break; + pf = pf->next; + } + pj_list_insert_before(pf, factory); + return PJ_SUCCESS; +} + + +PJ_DEF(pj_status_t) +pjmedia_converter_mgr_unregister_factory(pjmedia_converter_mgr *mgr, + pjmedia_converter_factory *f, + pj_bool_t destroy) +{ + if (!mgr) mgr = pjmedia_converter_mgr_instance(); + + PJ_ASSERT_RETURN(mgr != NULL, PJ_EINVAL); + + PJ_ASSERT_RETURN(pj_list_find_node(&mgr->factory_list, f), PJ_ENOTFOUND); + pj_list_erase(f); + if (destroy) + (*f->op->destroy_factory)(f); + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pjmedia_converter_create(pjmedia_converter_mgr *mgr, + pj_pool_t *pool, + pjmedia_conversion_param *param, + pjmedia_converter **p_cv) +{ + pjmedia_converter_factory *f; + pjmedia_converter *cv = NULL; + pj_status_t status = PJ_ENOTFOUND; + + if (!mgr) mgr = pjmedia_converter_mgr_instance(); + + PJ_ASSERT_RETURN(mgr != NULL, PJ_EINVAL); + + *p_cv = NULL; + + f = mgr->factory_list.next; + while (f != &mgr->factory_list) { + status = (*f->op->create_converter)(f, pool, param, &cv); + if (status == PJ_SUCCESS) + break; + f = f->next; + } + + if (status != PJ_SUCCESS) + return status; + + *p_cv = cv; + + return PJ_SUCCESS; +} + +PJ_DEF(pj_status_t) pjmedia_converter_convert(pjmedia_converter *cv, + pjmedia_frame *src_frame, + pjmedia_frame *dst_frame) +{ + return (*cv->op->convert)(cv, src_frame, dst_frame); +} + +PJ_DEF(void) pjmedia_converter_destroy(pjmedia_converter *cv) +{ + (*cv->op->destroy)(cv); +} + + |