Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2010-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include <pjmedia/converter.h> |
| 20 | #include <pj/assert.h> |
| 21 | #include <pj/errno.h> |
| 22 | |
| 23 | #define THIS_FILE "converter.c" |
| 24 | |
| 25 | struct pjmedia_converter_mgr |
| 26 | { |
| 27 | pjmedia_converter_factory factory_list; |
| 28 | }; |
| 29 | |
| 30 | static pjmedia_converter_mgr *converter_manager_instance; |
| 31 | |
| 32 | #if PJMEDIA_HAS_LIBSWSCALE && PJMEDIA_HAS_LIBAVUTIL |
| 33 | PJ_DECL(pj_status_t) |
| 34 | pjmedia_libswscale_converter_init(pjmedia_converter_mgr *mgr); |
| 35 | #endif |
| 36 | |
| 37 | |
| 38 | PJ_DEF(pj_status_t) pjmedia_converter_mgr_create(pj_pool_t *pool, |
| 39 | pjmedia_converter_mgr **p_mgr) |
| 40 | { |
| 41 | pjmedia_converter_mgr *mgr; |
| 42 | #if PJMEDIA_HAS_LIBSWSCALE && PJMEDIA_HAS_LIBAVUTIL |
| 43 | pj_status_t status = PJ_SUCCESS; |
| 44 | #endif |
| 45 | |
| 46 | mgr = PJ_POOL_ALLOC_T(pool, pjmedia_converter_mgr); |
| 47 | pj_list_init(&mgr->factory_list); |
| 48 | |
| 49 | if (!converter_manager_instance) |
| 50 | converter_manager_instance = mgr; |
| 51 | |
| 52 | #if PJMEDIA_HAS_LIBSWSCALE && PJMEDIA_HAS_LIBAVUTIL |
| 53 | status = pjmedia_libswscale_converter_init(mgr); |
| 54 | if (status != PJ_SUCCESS) { |
| 55 | PJ_PERROR(4,(THIS_FILE, status, |
| 56 | "Error initializing libswscale converter")); |
| 57 | } |
| 58 | #endif |
| 59 | |
| 60 | if (p_mgr) |
| 61 | *p_mgr = mgr; |
| 62 | |
| 63 | return PJ_SUCCESS; |
| 64 | } |
| 65 | |
| 66 | PJ_DEF(pjmedia_converter_mgr*) pjmedia_converter_mgr_instance(void) |
| 67 | { |
| 68 | pj_assert(converter_manager_instance != NULL); |
| 69 | return converter_manager_instance; |
| 70 | } |
| 71 | |
| 72 | PJ_DEF(void) pjmedia_converter_mgr_set_instance(pjmedia_converter_mgr *mgr) |
| 73 | { |
| 74 | converter_manager_instance = mgr; |
| 75 | } |
| 76 | |
| 77 | PJ_DEF(void) pjmedia_converter_mgr_destroy(pjmedia_converter_mgr *mgr) |
| 78 | { |
| 79 | pjmedia_converter_factory *f; |
| 80 | |
| 81 | if (!mgr) mgr = pjmedia_converter_mgr_instance(); |
| 82 | |
| 83 | PJ_ASSERT_ON_FAIL(mgr != NULL, return); |
| 84 | |
| 85 | f = mgr->factory_list.next; |
| 86 | while (f != &mgr->factory_list) { |
| 87 | pjmedia_converter_factory *next = f->next; |
| 88 | pj_list_erase(f); |
| 89 | (*f->op->destroy_factory)(f); |
| 90 | f = next; |
| 91 | } |
| 92 | |
| 93 | if (converter_manager_instance == mgr) |
| 94 | converter_manager_instance = NULL; |
| 95 | } |
| 96 | |
| 97 | PJ_DEF(pj_status_t) |
| 98 | pjmedia_converter_mgr_register_factory(pjmedia_converter_mgr *mgr, |
| 99 | pjmedia_converter_factory *factory) |
| 100 | { |
| 101 | pjmedia_converter_factory *pf; |
| 102 | |
| 103 | if (!mgr) mgr = pjmedia_converter_mgr_instance(); |
| 104 | |
| 105 | PJ_ASSERT_RETURN(mgr != NULL, PJ_EINVAL); |
| 106 | |
| 107 | PJ_ASSERT_RETURN(!pj_list_find_node(&mgr->factory_list, factory), |
| 108 | PJ_EEXISTS); |
| 109 | |
| 110 | pf = mgr->factory_list.next; |
| 111 | while (pf != &mgr->factory_list) { |
| 112 | if (pf->priority > factory->priority) |
| 113 | break; |
| 114 | pf = pf->next; |
| 115 | } |
| 116 | pj_list_insert_before(pf, factory); |
| 117 | return PJ_SUCCESS; |
| 118 | } |
| 119 | |
| 120 | |
| 121 | PJ_DEF(pj_status_t) |
| 122 | pjmedia_converter_mgr_unregister_factory(pjmedia_converter_mgr *mgr, |
| 123 | pjmedia_converter_factory *f, |
| 124 | pj_bool_t destroy) |
| 125 | { |
| 126 | if (!mgr) mgr = pjmedia_converter_mgr_instance(); |
| 127 | |
| 128 | PJ_ASSERT_RETURN(mgr != NULL, PJ_EINVAL); |
| 129 | |
| 130 | PJ_ASSERT_RETURN(pj_list_find_node(&mgr->factory_list, f), PJ_ENOTFOUND); |
| 131 | pj_list_erase(f); |
| 132 | if (destroy) |
| 133 | (*f->op->destroy_factory)(f); |
| 134 | return PJ_SUCCESS; |
| 135 | } |
| 136 | |
| 137 | PJ_DEF(pj_status_t) pjmedia_converter_create(pjmedia_converter_mgr *mgr, |
| 138 | pj_pool_t *pool, |
| 139 | pjmedia_conversion_param *param, |
| 140 | pjmedia_converter **p_cv) |
| 141 | { |
| 142 | pjmedia_converter_factory *f; |
| 143 | pjmedia_converter *cv = NULL; |
| 144 | pj_status_t status = PJ_ENOTFOUND; |
| 145 | |
| 146 | if (!mgr) mgr = pjmedia_converter_mgr_instance(); |
| 147 | |
| 148 | PJ_ASSERT_RETURN(mgr != NULL, PJ_EINVAL); |
| 149 | |
| 150 | *p_cv = NULL; |
| 151 | |
| 152 | f = mgr->factory_list.next; |
| 153 | while (f != &mgr->factory_list) { |
| 154 | status = (*f->op->create_converter)(f, pool, param, &cv); |
| 155 | if (status == PJ_SUCCESS) |
| 156 | break; |
| 157 | f = f->next; |
| 158 | } |
| 159 | |
| 160 | if (status != PJ_SUCCESS) |
| 161 | return status; |
| 162 | |
| 163 | *p_cv = cv; |
| 164 | |
| 165 | return PJ_SUCCESS; |
| 166 | } |
| 167 | |
| 168 | PJ_DEF(pj_status_t) pjmedia_converter_convert(pjmedia_converter *cv, |
| 169 | pjmedia_frame *src_frame, |
| 170 | pjmedia_frame *dst_frame) |
| 171 | { |
| 172 | return (*cv->op->convert)(cv, src_frame, dst_frame); |
| 173 | } |
| 174 | |
| 175 | PJ_DEF(void) pjmedia_converter_destroy(pjmedia_converter *cv) |
| 176 | { |
| 177 | (*cv->op->destroy)(cv); |
| 178 | } |
| 179 | |
| 180 | |