| /* GStreamer Matroska muxer/demuxer |
| * (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> |
| * (C) 2006 Tim-Philipp Müller <tim centricular net> |
| * |
| * matroska-ids.c: matroska track context utility functions |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "matroska-ids.h" |
| |
| gboolean |
| gst_matroska_track_init_video_context (GstMatroskaTrackContext ** p_context) |
| { |
| GstMatroskaTrackVideoContext *video_context; |
| |
| g_assert (p_context != NULL && *p_context != NULL); |
| |
| /* already set up? (track info might come before track type) */ |
| if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_VIDEO) { |
| GST_LOG ("video context already set up"); |
| return TRUE; |
| } |
| |
| /* it better not have been set up as some other track type ... */ |
| if ((*p_context)->type != 0) { |
| g_return_val_if_reached (FALSE); |
| } |
| |
| video_context = g_renew (GstMatroskaTrackVideoContext, *p_context, 1); |
| *p_context = (GstMatroskaTrackContext *) video_context; |
| |
| /* defaults */ |
| (*p_context)->type = GST_MATROSKA_TRACK_TYPE_VIDEO; |
| video_context->display_width = 0; |
| video_context->display_height = 0; |
| video_context->pixel_width = 0; |
| video_context->pixel_height = 0; |
| video_context->asr_mode = 0; |
| video_context->fourcc = 0; |
| video_context->default_fps = 0.0; |
| video_context->earliest_time = GST_CLOCK_TIME_NONE; |
| return TRUE; |
| } |
| |
| gboolean |
| gst_matroska_track_init_audio_context (GstMatroskaTrackContext ** p_context) |
| { |
| GstMatroskaTrackAudioContext *audio_context; |
| |
| g_assert (p_context != NULL && *p_context != NULL); |
| |
| /* already set up? (track info might come before track type) */ |
| if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_AUDIO) |
| return TRUE; |
| |
| /* it better not have been set up as some other track type ... */ |
| if ((*p_context)->type != 0) { |
| g_return_val_if_reached (FALSE); |
| } |
| |
| audio_context = g_renew (GstMatroskaTrackAudioContext, *p_context, 1); |
| *p_context = (GstMatroskaTrackContext *) audio_context; |
| |
| /* defaults */ |
| (*p_context)->type = GST_MATROSKA_TRACK_TYPE_AUDIO; |
| audio_context->channels = 1; |
| audio_context->samplerate = 8000; |
| return TRUE; |
| } |
| |
| gboolean |
| gst_matroska_track_init_subtitle_context (GstMatroskaTrackContext ** p_context) |
| { |
| GstMatroskaTrackSubtitleContext *subtitle_context; |
| |
| g_assert (p_context != NULL && *p_context != NULL); |
| |
| /* already set up? (track info might come before track type) */ |
| if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE) |
| return TRUE; |
| |
| /* it better not have been set up as some other track type ... */ |
| if ((*p_context)->type != 0) { |
| g_return_val_if_reached (FALSE); |
| } |
| |
| subtitle_context = g_renew (GstMatroskaTrackSubtitleContext, *p_context, 1); |
| *p_context = (GstMatroskaTrackContext *) subtitle_context; |
| |
| (*p_context)->type = GST_MATROSKA_TRACK_TYPE_SUBTITLE; |
| subtitle_context->invalid_utf8 = FALSE; |
| subtitle_context->seen_markup_tag = FALSE; |
| return TRUE; |
| } |
| |
| void |
| gst_matroska_register_tags (void) |
| { |
| /* TODO: register other custom tags */ |
| } |