1 /* GStreamer 2 * Copyright (C) 2009 David A. Schleef <ds@schleef.org> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public 15 * License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef _GST_SMPTE_TIME_CODE_H_ 21 #define _GST_SMPTE_TIME_CODE_H_ 22 23 #include <gst/gst.h> 24 25 G_BEGIN_DECLS 26 27 typedef struct _GstSMPTETimeCode GstSMPTETimeCode; 28 29 /** 30 * GstSMPTETimeCode: 31 * @GST_SMPTE_TIME_CODE_SYSTEM_30: 29.97 frame per second system (NTSC) 32 * @GST_SMPTE_TIME_CODE_SYSTEM_25: 25 frame per second system (PAL) 33 * @GST_SMPTE_TIME_CODE_SYSTEM_24: 24 frame per second system 34 * 35 * Enum value representing SMPTE Time Code system. 36 */ 37 typedef enum { 38 GST_SMPTE_TIME_CODE_SYSTEM_30 = 0, 39 GST_SMPTE_TIME_CODE_SYSTEM_25, 40 GST_SMPTE_TIME_CODE_SYSTEM_24 41 } GstSMPTETimeCodeSystem; 42 43 struct _GstSMPTETimeCode { 44 int hours; 45 int minutes; 46 int seconds; 47 int frames; 48 }; 49 50 #define GST_SMPTE_TIME_CODE_SYSTEM_IS_VALID(x) \ 51 ((x) >= GST_SMPTE_TIME_CODE_SYSTEM_30 && (x) <= GST_SMPTE_TIME_CODE_SYSTEM_24) 52 53 #define GST_SMPTE_TIME_CODE_FORMAT "02d:%02d:%02d:%02d" 54 #define GST_SMPTE_TIME_CODE_ARGS(timecode) \ 55 (timecode)->hours, (timecode)->minutes, \ 56 (timecode)->seconds, (timecode)->frames 57 58 gboolean gst_smpte_time_code_is_valid (GstSMPTETimeCodeSystem system, 59 GstSMPTETimeCode *time_code); 60 gboolean gst_smpte_time_code_from_frame_number (GstSMPTETimeCodeSystem system, 61 GstSMPTETimeCode *time_code, int frame_number); 62 gboolean gst_smpte_time_code_get_frame_number (GstSMPTETimeCodeSystem system, 63 int *frame_number, GstSMPTETimeCode *time_code); 64 GstClockTime gst_smpte_time_code_get_timestamp (GstSMPTETimeCodeSystem system, 65 GstSMPTETimeCode *time_code); 66 67 G_END_DECLS 68 69 #endif 70 71