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Diffstat (limited to 'tinyMEDIA/src/tmedia_common.c')
| -rw-r--r-- | tinyMEDIA/src/tmedia_common.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/tinyMEDIA/src/tmedia_common.c b/tinyMEDIA/src/tmedia_common.c new file mode 100644 index 0000000..49724bf --- /dev/null +++ b/tinyMEDIA/src/tmedia_common.c @@ -0,0 +1,184 @@ +/*
+* Copyright (C) 2009-2010 Mamadou Diop.
+*
+* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
+*
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO 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 3 of the License, or
+* (at your option) any later version.
+*
+* DOUBANGO 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 DOUBANGO.
+*
+*/
+
+/**@file tmedia_common.c
+ * @brief Common functions and definitions.
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango.org>
+ *
+ * @date Created: Sat Nov 8 16:54:58 2009 mdiop
+ */
+#include "tinymedia/tmedia_common.h"
+
+#include "tinymedia/tmedia_session.h"
+
+#include "tsk_debug.h"
+
+#include <stdlib.h> /* atoi() */
+
+tmedia_type_t tmedia_type_from_sdp(const tsdp_message_t* sdp)
+{
+ tmedia_type_t type = tmedia_none;
+ const tsdp_header_M_t* M;
+ tsk_size_t index = 0;
+ const tmedia_session_plugin_def_t* plugin;
+
+ if(!sdp){
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return tmedia_none;
+ }
+
+ while((M = (const tsdp_header_M_t*)tsdp_message_get_headerAt(sdp, tsdp_htype_M, index++))){
+ if(M->port && (plugin = tmedia_session_plugin_find_by_media(M->media))){
+ type |= plugin->type;
+ }
+ }
+ return type;
+}
+
+
+int tmedia_parse_rtpmap(const char* rtpmap, char** name, int32_t* rate, int32_t* channels)
+{
+ /* e.g. AMR-WB/16000/2 */
+
+ int len;
+ int index, pos = 0;
+
+ if(tsk_strnullORempty(rtpmap)){
+ TSK_DEBUG_ERROR("Invalid parameter");
+ return -1;
+ }
+
+ *name = tsk_null;
+ *rate = *channels = 0;
+ len = tsk_strlen(rtpmap);
+
+ /* name */
+ if((index = tsk_strindexOf(rtpmap, len, "/")) != -1){
+ *name = tsk_strndup(rtpmap, index);
+ len -= (index + 1), pos = (index + 1);
+ /* rate */
+ if(len>0){
+ if((index = tsk_strindexOf((rtpmap + pos), len, "/")) != -1){
+ *rate = atoi(&rtpmap[pos]);
+ len -= (index + 1), pos += (index + 1);
+ /* channels */
+ if(len>0){
+ *channels = atoi(&rtpmap[pos]);
+ }
+ }
+ else{
+ *rate = atoi(&rtpmap[pos]);
+ }
+ }
+ }
+ else{
+ *name = tsk_strdup(rtpmap);
+ }
+
+ return 0;
+
+ ///* e.g. AMR-WB/16000/2 */
+ //if(sscanf(rtpmap, "%*s/%*d/%*d") != EOF){
+ // int index = tsk_strindexOf(rtpmap, len, "/");
+ // *name = tsk_strndup(rtpmap, index);
+ // sscanf(&rtpmap[index+1], "%d/%d", rate, channels);
+ // return 0;
+ //}
+ ///* e.g. AMR-WB/16000 */
+ //else if(sscanf(rtpmap, "%*s/%*d") != EOF){
+ // int index = tsk_strindexOf(rtpmap, len, "/");
+ // *name = tsk_strndup(rtpmap, index);
+ // *rate = atoi(&rtpmap[index+1]);
+ // return 0;
+ //}
+ ///* e.g. AMR-WB */
+ //else if(sscanf(rtpmap, "%*s") != EOF){
+ // *name = tsk_strdup(rtpmap);
+ // return 0;
+ //}
+ //else{
+ // TSK_DEBUG_ERROR("%s is not a valid rtpmap value", rtpmap);
+ // return -2;
+ //}
+}
+
+static const tmedia_video_size_t tmedia_video_sizes[] =
+{
+ {tmedia_vst_none , 176, 144},
+
+ {tmedia_vst_sqcif, 128, 96},
+ {tmedia_vst_qcif, 176, 144},
+ {tmedia_vst_qvga, 320, 240},
+ {tmedia_vst_cif, 352, 288},
+ {tmedia_vst_vga, 640, 480},
+ {tmedia_vst_4cif, 704, 576},
+ {tmedia_vst_svga, 800, 600},
+ {tmedia_vst_xga, 1024, 768},
+ {tmedia_vst_sxga, 1280, 1024},
+ {tmedia_vst_16cif, 1408, 1152},
+ {tmedia_vst_hd720p, 1280, 720},
+ {tmedia_vst_hd1080p, 1920, 1080},
+
+ {tmedia_vst_ios_low, 200, 152},
+ {tmedia_vst_ios_high, 400, 304},
+};
+
+const tmedia_video_size_t* tmedia_get_video_size(tmedia_chroma_t chroma, tsk_size_t size)
+{
+ float factor = 3.f;
+ tsk_size_t i;
+ switch(chroma)
+ {
+ case tmedia_rgb24:
+ case tmedia_bgr24:
+ factor = 3.f;
+ break;
+ case tmedia_rgb565le:
+ case tmedia_rgb565be:
+ factor = 2.f;
+ break;
+
+ case tmedia_rgb32:
+ factor = 4.f;
+ break;
+
+ case tmedia_nv21:
+ case tmedia_nv12:
+ case tmedia_yuv420p:
+ factor = 1.5f;
+ break;
+
+ case tmedia_yuv422p:
+ case tmedia_uyvy422:
+ factor = 2.f;
+ break;
+ }
+
+ for(i = 1; i< sizeof(tmedia_video_sizes)/sizeof(tmedia_video_size_t); i++){
+ if((((float)(tmedia_video_sizes[i].width * tmedia_video_sizes[i].height)) * factor) == size){
+ return &tmedia_video_sizes[i];
+ }
+ }
+
+ return &tmedia_video_sizes[0];;
+}
\ No newline at end of file |
